Sealing structure of steering engine oil cylinder

Abstract

The utility model discloses a sealing structure of a steering gear oil cylinder, which belongs to the technical field of sealing of steering gear oil cylinders and comprises a shaft steel wire baffle ring, an oil cylinder oil seal iron sleeve, a sealing rubber ring, a supporting sleeve, a high-pressure framework oil seal, a rack assembly and a steering gear assembly. The device is novel in design and ingenious, the annular groove is formed in the inner wall of the steering engine in advance, then a spring steel structure is adopted to be connected with the annular groove in a clamped mode, and therefore the aluminum blocking structure at the end of the steering engine oil cylinder shell is effectively locked, meanwhile, the high-pressure oil seal is additionally arranged on the other side of the blocking structure, and the sealing effect is good. The outer wall of the blocking structure is sleeved with the two sets of sealing rubber rings to enhance the sealing effect on oil, the two sets of sealing rubber rings and the high-pressure oil seal can achieve the purposes of shock absorption and noise reduction, the oil sealing performance of the steering engine oil cylinder shell is improved, the machining difficulty of the steering engine shell is reduced, the production and installation efficiency is improved, and the service life of the steering engine oil cylinder shell is prolonged. Therefore, the purpose of prolonging the service life of the steering engine can be achieved.

Description

Technical Field

[0001] This application relates to the field of steering gear cylinder sealing technology, and more particularly to a sealing structure for a steering gear cylinder. Background Technology

[0002] A steering gear is a machine that assists the driver in applying force while turning the steering wheel, reducing the effort required to turn and making driving easier and more convenient. It is mainly divided into rack and pinion steering and worm gear steering. There are roughly three types of power steering devices on the market: electric power steering, rack and pinion hydraulic power steering, and electro-hydraulic power steering. As mentioned above, the steering gear is the core component of the vehicle's steering system, responsible for converting the rotation of the steering wheel into the steering action of the wheels, which directly affects the driving feel and safety.

[0003] The existing hydraulic cylinder on one side of the steering gear is usually fixed by a threaded connection to prevent oil leakage. However, this method requires pre-grooving inside the steering gear, which makes it difficult to guarantee the machining accuracy of the thread groove. This affects the ease of installation of the hydraulic plugging structure at the end of the steering gear and can easily cause oil leakage in the steering gear cylinder housing due to mismatch between the thread groove and the plugging structure, thus shortening the service life of the steering gear.

[0004] Therefore, this application proposes a sealing structure for a steering gear cylinder. Utility Model Content

[0005] This application proposes a sealing structure for a steering gear cylinder to solve the problems mentioned in the background art. By pre-opening an annular groove on the inner wall of the steering gear and then using a spring steel structure to engage with the annular groove, the aluminum blocking structure at the end of the steering gear cylinder housing is effectively locked. At the same time, a high-pressure oil seal is added on the other side of the blocking structure, and two sets of sealing rubber rings are fitted on the outer wall of the blocking structure to enhance the sealing effect on the oil. The two sets of sealing rubber rings and the high-pressure oil seal also serve to reduce vibration and noise, improve the oil sealing performance of the steering gear cylinder housing, reduce the processing difficulty of the steering gear housing, improve the efficiency of production and installation, and thus extend the service life of the steering gear.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A sealing structure for a steering gear cylinder includes a steel wire retaining ring for the shaft, an oil seal sleeve for the cylinder, a sealing rubber ring, a support sleeve, a high-pressure skeleton oil seal, a rack assembly, and a steering gear assembly. The steering gear assembly consists of a housing and a cylinder assembly. One end of the steering gear assembly is the housing, and the other end is the cylinder assembly, which are fixedly connected. An annular groove is provided inside the steering gear assembly.

[0008] In a preferred embodiment, a spring steel is provided inside the annular groove, and the spring steel is engaged with the annular groove.

[0009] The practicality of the device is improved by pre-cutting an annular groove on the inner wall of the steering gear and then using a spring steel structure to snap into the annular groove.

[0010] In a preferred embodiment, the steering gear assembly has a blocking structure inside, and the blocking structure is located on one side of the spring steel;

[0011] By employing a spring steel structure to engage with the annular groove, the aluminum blocking structure at the end of the steering gear cylinder housing is effectively locked, thereby improving the practicality of the device.

[0012] In a preferred embodiment, the steering gear assembly is provided with a high-pressure oil seal, and the high-pressure oil seal is located on the side of the blocking structure away from the spring steel;

[0013] By adding a high-pressure oil seal on the other side of the blocking structure, the oil sealing performance of the steering gear cylinder housing is improved, thereby enhancing the practicality of the device.

[0014] In a preferred embodiment, the outer wall of the blocking structure is fitted with two sets of sealing rings, each set of sealing rings including multiple O-rings and a circular ring;

[0015] By setting two sets of sealing O-rings, each O-ring is connected to the other, and the gap between the O-rings can reduce the probability of oil leakage, thereby improving the practicality of the device.

[0016] In a preferred embodiment, the multiple O-rings in each group of sealing rings are connected to each other, and the circular ring is sleeved on the outer wall of the multiple O-rings;

[0017] By placing a circular ring around the outer wall of multiple O-rings, the overall sealing performance of the entire sealing ring is further enhanced. This not only achieves a sealing effect but also reduces the possibility of oil leakage in the steering gear after long-term use, thereby improving the practicality of the device.

[0018] The beneficial effects of this application are:

[0019] 1. The sealing structure of the steering gear cylinder is achieved by pre-opening an annular groove on the inner wall of the steering gear and then using a spring steel structure to snap into the annular groove, thereby effectively locking the aluminum blocking structure at the end of the steering gear cylinder housing. At the same time, a high-pressure oil seal is added on the other side of the blocking structure, and two sets of sealing rubber rings are fitted on the outer wall of the blocking structure to enhance the sealing effect on the oil. The two sets of sealing rubber rings and the high-pressure oil seal can also play a role in shock absorption and noise reduction, improving the oil sealing performance of the steering gear cylinder housing, reducing the processing difficulty of the steering gear housing, improving the efficiency of production and installation, and thus extending the service life of the steering gear, greatly improving the practicality of the device.

[0020] 2. The sealing structure of the steering gear cylinder, by setting two sets of sealing rings, with each O-ring connected to the other, the gap between the O-rings can reduce the probability of oil leakage. The circular ring is fitted on the outer wall of multiple O-rings, further increasing the overall sealing performance of the entire sealing ring. It not only achieves the sealing effect, but also reduces the possibility of oil leakage in the steering gear after long-term use, greatly improving the practicality of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in this application;

[0022] Figure 2 This is a schematic diagram of the hydraulic cylinder assembly of the device in this application;

[0023] Figure 3 This is a schematic diagram of the sealing structure of the device in this application;

[0024] Figure 4 This is a schematic diagram of the sealing ring of the device in this application.

[0025] The following are the labeling elements in the diagram: 1. Wire retaining ring for shaft; 2. Oil cylinder oil seal sleeve; 3. Sealing ring; 31. O-ring; 32. Round ring; 5. Support sleeve; 6. High-pressure skeleton oil seal; 7. Rack assembly; 8. Steering gear assembly; 81. Housing; 82. Oil cylinder assembly; 9. Spring steel; 10. Blocking structure; 11. High-pressure oil seal; 13. Annular groove. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] Reference Figure 1-4A sealing structure for a steering gear cylinder includes a shaft wire retaining ring 1, a cylinder oil seal iron sleeve 2, a sealing rubber ring 3, a support sleeve 5, a high-pressure skeleton oil seal 6, a rack assembly 7, and a steering gear assembly 8. The steering gear assembly 8 consists of a housing 81 and a cylinder assembly 82. One end of the steering gear assembly 8 is the housing 81, and the other end is the cylinder assembly 82, which are fixedly connected. An annular groove 13 is provided inside the steering gear assembly 8.

[0028] Reference Figure 2-3 The annular groove 13 is provided with a spring steel 9 inside, and the spring steel 9 is engaged with the annular groove 13. By pre-opening an annular groove 13 on the inner wall of the steering gear, and then using the structure of the spring steel 9 to engage with the annular groove 13, the practicality of the device is improved.

[0029] Reference Figure 1-3 The steering gear assembly 8 has a blocking structure 10 inside, and the blocking structure 10 is located on one side of the spring steel 9. By using the structure of the spring steel 9 to engage with the annular groove 13, the aluminum blocking structure 10 at the end of the steering gear cylinder housing 81 is effectively locked, thereby improving the practicality of the device.

[0030] Reference Figure 1-3 The steering gear assembly 8 is equipped with a high-pressure oil seal 11, and the high-pressure oil seal 11 is located on the side of the blocking structure 10 away from the spring steel 9. By adding a high-pressure oil seal 11 on the other side of the blocking structure 10, the oil sealing performance of the steering gear cylinder housing 81 is improved, thereby enhancing the practicality of the device.

[0031] Reference Figure 1-4 The outer wall of the blocking structure 10 is fitted with two sets of sealing rings 3. Each set of sealing rings 3 includes multiple O-rings 31 and a circular ring 32. By setting two sets of sealing rings 3, each O-ring 31 is connected to the other. The gap between the O-rings 31 can reduce the probability of oil leakage, thereby improving the practicality of the device.

[0032] Reference Figure 1 , 2 4. In each group of sealing rings 3, multiple O-rings 31 are connected to each other, and a circular ring 32 is fitted on the outer wall of multiple O-rings 31. By fitting the circular ring 32 on the outer wall of multiple O-rings 31, the overall sealing performance of the entire sealing ring 3 is further increased. This not only achieves the sealing effect, but also reduces the possibility of oil leakage in the steering gear after long-term use, thereby improving the practicality of the device.

[0033] Working principle: By pre-opening an annular groove 13 on the inner wall of the steering gear, and then using a spring steel 9 to engage with the annular groove 13, the aluminum blocking structure 10 at the end of the steering gear cylinder housing 81 is effectively locked. At the same time, a high-pressure oil seal 11 is added on the other side of the blocking structure 10, and two sets of sealing rubber rings 3 are fitted on the outer wall of the blocking structure 10 to enhance the sealing effect on the oil. The two sets of sealing rubber rings 3 and the high-pressure oil seal 11 can also play the purpose of vibration reduction and noise reduction, improve the oil sealing performance of the steering gear cylinder housing 81, reduce the processing difficulty of the steering gear housing 81, improve the efficiency of production and installation, and thus extend the service life of the steering gear.

[0034] By setting two sets of sealing rings 3, each O-ring 31 is connected to the other. The gap between O-rings 31 can reduce the probability of oil leakage. The circular ring 32 is fitted on the outer wall of multiple O-rings 31, which further increases the overall sealing performance of the sealing ring 3. It not only has a sealing effect, but also reduces the possibility of oil leakage in the steering gear after long-term use.

[0035] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A sealing structure for a steering gear cylinder, comprising a steel wire retaining ring for the shaft (1), an oil seal sleeve for the cylinder (2), a sealing rubber ring (3), a support sleeve (5), a high-pressure skeleton oil seal (6), a rack assembly (7), and a steering gear assembly (8), characterized in that, The steering assembly (8) consists of a housing (81) and a cylinder assembly (82). One end of the steering assembly (8) is the housing (81), and the other end is the cylinder assembly (82), which are fixedly connected. An annular groove (13) is provided inside the steering assembly (8).

2. The sealing structure of a steering gear cylinder according to claim 1, characterized in that, A spring steel (9) is provided inside the annular groove (13), and the spring steel (9) is engaged with the annular groove (13).

3. The sealing structure of a steering gear cylinder according to claim 2, characterized in that, The steering assembly (8) has a blocking structure (10) inside, and the blocking structure (10) is located on one side of the spring steel (9).

4. The sealing structure of a steering gear cylinder according to claim 2, characterized in that, The steering assembly (8) is provided with a high-pressure oil seal (11), and the high-pressure oil seal (11) is located on the side of the blocking structure (10) away from the spring steel (9).

5. The sealing structure of a steering gear cylinder according to claim 3, characterized in that, The outer wall of the blocking structure (10) is fitted with two sets of sealing rings (3), each set of sealing rings (3) including multiple O-rings (31) and a circular ring (32).

6. The sealing structure of a steering gear cylinder according to claim 1, characterized in that, The multiple O-rings (31) in each set of sealing rings (3) are connected to each other, and the round ring (32) is fitted on the outer wall of the multiple O-rings (31).

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