Dustproof and waterproof sealing reinforcing structure of power-assisted steering gear

Abstract

The utility model relates to the technical field of power-assisted steering gear sealing, and discloses a power-assisted steering gear dustproof and waterproof sealing reinforcing structure which comprises a fixing ring, the inner wall of the fixing ring is connected with a tightening ring in a sliding mode, and the left end and the right end of the tightening ring both penetrate through the fixing ring and are fixedly connected with fixing pieces. The adjacent sides of the two fixing pieces are rotationally connected with the same eccentric wheel, the front end of the outer wall of the eccentric wheel is fixedly connected with a handle, the middle of the front side of the outer wall of the fixing ring is fixedly connected with a buckle, and the inner side of the fixing ring is fixedly connected with a shell. The eccentric wheel rotates to drive the head end and the tail end of the tightening ring to be stretched continuously, so that the internal range of the tightening ring is reduced, the left end of the dustproof cover is fixed through even extrusion force, the sealing performance of the dustproof cover is enhanced, the dustproof cover can be rapidly installed, installation and replacement of the dustproof cover are convenient, stress is even when the dustproof cover is installed, and the dustproof cover is not damaged. And deformation caused by uneven stress is avoided.

Description

Technical Field

[0001] This utility model relates to the field of power steering sealing technology, and in particular to a dustproof and waterproof sealing reinforcement structure for power steering systems. Background Technology

[0002] Power steering is a system in a car that assists the driver in controlling the steering wheel. Its core function is to reduce the force required for the driver to turn the steering wheel by providing auxiliary power, while improving the precision of steering response and driving comfort, making driving easier and more flexible, especially when driving at low speeds or when parked.

[0003] When a vehicle is driving in complex road conditions, the power steering system is exposed to the external environment for a long time. Dust and sand particles can enter the steering system, accelerating mechanical wear, affecting gear meshing accuracy, and causing steering noise or jamming. Moisture intrusion can cause metal parts to rust and electrical short circuits, thus causing power steering failure. Therefore, a dustproof, waterproof, and reinforced structure is needed for the power steering system.

[0004] Early power steering sealing structures mainly consisted of a rubber dust cover, a sealing ring, and sealant. The rubber dust cover achieved dynamic sealing by wrapping around the steering tie rod and using elastic deformation. The sealing ring filled the gaps in the housing through an interference fit, and the sealant was used for auxiliary fixation and secondary sealing. Because the dust cover was used for dynamic sealing, it would fall off as the vehicle moved and bumped, failing to form an effective seal. To solve this problem, existing technology uses metal clamps to tightly fix the dust cover to the housing. However, in actual use, because the metal clamps require special tools to tighten, uneven force during installation can cause local deformation and cracking of the dust cover. It is not possible to quickly install and fix the dust cover while ensuring uniform force during installation, which does not meet the needs of users. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a dustproof and waterproof sealing reinforcement structure for power steering, which aims to improve the problems of dust cover not being able to be installed quickly and the uneven stress on the installation surface in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a dustproof, waterproof, and reinforced power steering structure, including a fixed ring, a clamping ring slidably connected to the inner wall of the fixed ring, and a fixing plate fixedly connected to the left and right ends of the clamping ring through the fixed ring. The same eccentric wheel is rotatably connected to the adjacent sides of the two fixing plates. A handle is fixedly connected to the front end of the outer wall of the eccentric wheel. A buckle is fixedly connected to the middle of the front side of the outer wall of the fixed ring. A housing is fixedly connected to the inner side of the fixed ring. A drive shaft is slidably connected inside the housing. A steering tie rod is rotatably connected to the right end of the drive shaft. A second support ring is fixedly connected to the middle of the outer wall of the steering tie rod. A dust cover is provided on the side of the second support ring adjacent to the fixed ring. A threaded groove is opened on the right end of the outer wall of the dust cover. A sealing cap is threadedly connected to the right side of the dust cover. A waterproof mechanism is provided on the right side of the fixed ring, which is used to guide and drain water that seeps into the joint.

[0007] As a further description of the above technical solution:

[0008] The waterproofing mechanism includes a support ring and a one-way valve. The support ring is fixedly connected to the right end of the fixed ring. The outer wall of the support ring has a spiral guide groove, and the top of the support ring has a drainage hole. The right side of the inside of the support ring has a water storage chamber. The bottom left side of the water storage chamber is connected to a drain pipe. The left end of the drain pipe passes through the fixed ring, and a one-way valve is provided in the middle of the inner wall of the drain pipe.

[0009] As a further description of the above technical solution:

[0010] A fixing block is fixedly connected to the front side of the outer wall of the shell, and a nameplate is fixedly connected to the front end of the fixing block.

[0011] As a further description of the above technical solution:

[0012] A protective sleeve is fixedly connected to the outside of the handle, and the outer wall of the protective sleeve is treated with anti-slip material.

[0013] As a further description of the above technical solution:

[0014] The fixing ring and the lower middle part of the front and rear sides of the outer wall of the sealing cover are all fixedly connected to the connecting ring, and the interior of each of the multiple connecting rings is provided with a spring buckle.

[0015] As a further description of the above technical solution:

[0016] The fixing ring and the bottom of the sealing cover are fixedly connected to the same interception net, and the four corners of the interception net are provided with connection holes.

[0017] As a further description of the above technical solution:

[0018] The bottom of the interception net is treated with wear resistance, and a friction pad is fixedly connected to the upper middle part of the front side of the outer wall of the fixing ring.

[0019] As a further description of the above technical solution:

[0020] The inner diameters of the left and right ends of the dust cover are respectively matched with the outer diameters of the first and second support rings, and a sealing ring is fixedly connected to the right end of the outer shell.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the device fixes and seals the right end of the dust cover by twisting the sealing cover along the threaded groove on the right end of the dust cover. The rotation of the eccentric wheel causes the first and last ends of the clamping ring to be continuously stretched, which reduces the internal range of the clamping ring. The left end of the dust cover is fixed by uniform extrusion pressure, which enhances the sealing performance of the dust cover. The dust cover can be installed quickly, which is convenient for the installation and replacement of the dust cover. The dust cover is evenly stressed during installation and will not deform due to uneven stress, which can meet the needs of users.

[0023] 2. In this utility model, when a vehicle passes through a flooded section, water seeps into the seams of the dust cover. The spiral guide channel guides the flow of water, directing the seeping water through the drainage hole into the water storage chamber. Then, the water pressure opens the one-way valve inside the drainage pipe, thereby guiding the water out. By actively guiding the drainage, the seepage of water is prevented from corroding the internal mechanical parts. Attached Figure Description

[0024] Figure 1 This is a perspective view of the dustproof, waterproof, and sealing reinforced structure of the power steering system proposed in this utility model;

[0025] Figure 2 This is a front view of the dustproof, waterproof, and sealing reinforcement structure for the power steering system proposed in this utility model.

[0026] Figure 3 This is a partial structural diagram of the dustproof, waterproof, and sealing reinforcement structure for the power steering system proposed in this utility model;

[0027] Figure 4 This is a partial structural exploded view of the dustproof, waterproof, and sealing reinforcement structure for the power steering system proposed in this utility model;

[0028] Figure 5 This is a partial structural cross-sectional view of the dustproof, waterproof, and sealing reinforcement structure for the power steering system proposed in this utility model.

[0029] Figure 6 This is a cross-sectional view of the fixing ring and the support ring of the dustproof, waterproof, and sealing reinforcement structure for the power steering system proposed in this utility model.

[0030] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Fixing ring; 2. Waterproofing mechanism; 201. Support ring one; 202. Spiral guide groove; 203. Drainage hole; 204. Water storage chamber; 205. Drainage pipe; 206. One-way valve; 3. Hoop ring; 4. Fixing plate; 5. Eccentric wheel; 6. Handle; 7. Buckle; 8. Housing; 9. Drive shaft; 10. Steering tie rod; 11. Support ring two; 12. Dust cover; 13. Threaded groove; 14. Sealing cover; 15. Fixing block; 16. Nameplate; 17. Protective sleeve; 18. Connecting ring; 19. Interception net; 20. Connecting hole; 21. Spring buckle; 22. Sealing ring; 23. Friction pad. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a dustproof, waterproof, and reinforced power steering system, comprising a fixed ring 1. A clamping ring 3 is slidably connected to the inner wall of the fixed ring 1. The contraction of the clamping ring 3 provides uniform compressive force. Both ends of the clamping ring 3 penetrate the fixed ring 1 and are fixedly connected to fixing plates 4. The two fixing plates 4 are rotatably connected to the same eccentric wheel 5 on adjacent sides. When the eccentric wheel 5 rotates, it pulls the clamping ring 3 to contract. A handle 6 is fixedly connected to the front end of the outer wall of the eccentric wheel 5, allowing for easier rotation of the eccentric wheel 5 by pulling the handle 6. A buckle 7 is fixedly connected to the middle of the front side of the outer wall of the fixed ring 1 for securing... A housing 8 is fixedly connected to the inner side of ring 1. A drive shaft 9 is slidably connected inside the housing 8. A steering rod 10 is rotatably connected to the right end of the drive shaft 9. A support ring 11 is fixedly connected to the middle of the outer wall of the steering rod 10. The support ring 11 can provide support force to the inner right end of the dust cover 12, so that the sealing effect of the dust cover 12 is better. A dust cover 12 is provided on the side adjacent to the fixed ring 1 and the support ring 11. A threaded groove 13 is opened on the right end of the outer wall of the dust cover 12. A sealing cap 14 is threadedly connected to the right side of the dust cover 12. A protective sleeve 17 is fixedly connected to the outer side of the handle 6. The outer wall of the protective sleeve 17 is treated with anti-slip treatment.

[0035] Specifically, the device inserts the dust cover 12 from right to left, so that the left side of the dust cover 12 passes through the steering rod 10 and reaches the position of the fixing ring 1. At the same time, the right side of the dust cover 12 fits the support ring 11 fixed to the outer wall of the steering rod 10. The sealing cover 14 is screwed along the threaded groove 13 at the right end of the dust cover 12, and the right end of the dust cover 12 is fixed and sealed through the threaded connection. At this time, the handle 6 is pulled, so that the handle 6 drives the eccentric wheel 5 to rotate. The protective sleeve 17 is treated with anti-slip to prevent the hand from slipping when pulling the handle 6 through the protective sleeve 17. The two ends of the clamping ring 3 are respectively connected to the two sides of the eccentric wheel 5. The rotational characteristics of the eccentric wheel 5 convert its circular motion into The linear movement of the two ends of the left and right clamping rings 3, as the ends of the clamping rings 3 are continuously stretched, reduces the internal area of ​​the clamping rings 3, thereby firmly fixing the left end of the dust cover 12 and ensuring that the surface of the left end of the dust cover 12 is evenly stressed to prevent deformation. This enhances the dust cover 12's sealing performance against dust. When the buckle 7 is opened and the handle 6 is pressed down, the dust cover 12 is fixed. The handle 6 also rotates to the fixing range of the buckle 7. At this time, the buckle 7 is re-engaged, thereby fixing the handle 6 and preventing the eccentric wheel 5 from rotating. This ensures that the clamping effect of the clamping rings 3 is not affected, allowing the dust cover 12 to be installed quickly and easily, facilitating the installation and replacement of the dust cover 12.

[0036] Reference Figure 5 , Figure 6 and Figure 7 The waterproofing mechanism 2 includes a support ring 201 and a one-way valve 206. The support ring 201 is fixedly connected to the right end of the fixed ring 1. A spiral guide groove 202 is formed on the outer wall of the support ring 201. The annular design guides the seepage water flow along the spiral guide groove 202. A drainage hole 203 is formed on the top of the support ring 201. A water storage chamber 204 is formed on the right side of the inside of the support ring 201. The seepage water is guided into the water storage chamber 204 through the drainage hole 203. A drain pipe 205 is connected to the bottom left side of 204. The left end of the drain pipe 205 passes through the fixing ring 1. A one-way valve 206 is provided in the middle of the inner wall of the drain pipe 205. The one-way valve 206 can prevent external water from entering. The inner diameter of the left and right ends of the dust cover 12 matches the outer diameter of the support ring 1 201 and the support ring 2 11, respectively. A sealing ring 22 is fixedly connected to the right end of the outer shell 8. The sealing ring 22 further seals the drive shaft 9 and the outer shell 8.

[0037] Specifically, when a vehicle crosses a flooded section of road, water may seep into the seams of the dust cover 12. At this time, the spiral guide groove 202 on the contact surface between the left end of the dust cover 12 and the support ring 201 begins to function. The spiral guide groove 202 guides the direction of water flow through a tortuous path, guiding the seeping water into the water storage chamber 204 through the drainage hole 203. As the water in the water storage chamber 204 increases, the water pressure gradually rises, pushing the one-way valve 206 in the drainage pipe 205 to open. In this way, the water can be guided out. The one-way valve 206 ensures that the external water flow will not backflow into the drainage pipe 205. Through this active drainage mechanism, water can be prevented from seeping in and corroding the internal mechanical parts.

[0038] Reference Figure 1 and Figure 2 A connecting ring 18 is fixedly connected to the lower middle part of the front and rear sides of the outer wall of the fixing ring 1 and the sealing cover 14. A spring buckle 21 is provided inside the multiple connecting rings 18. The spring buckle 21 is connected to the connecting ring 18 and hung on both sides of the fixing ring 1 and the sealing cover 14. The bottom of the fixing ring 1 and the sealing cover 14 is fixedly connected to the same interception net 19. A connecting hole 20 is provided at each of the four corners of the interception net 19. The connecting hole 20 is used to connect with the spring buckle 21.

[0039] Specifically, the two ends of the spring buckle 21 pass through the connecting ring 18 and the connecting hole 20 respectively, thereby fixing the intercepting net 19 below the fixing ring 1 and the sealing cover 14. When the vehicle is traveling through a gravel road, the sand and gravel will be carried up and impact the dust cover 12, causing damage to the dust cover 12. The intercepting net 19 can block the sand and gravel, thereby protecting the dust cover 12 and extending its service life.

[0040] Reference Figure 1 , Figure 2 and Figure 5 A fixing block 15 is fixedly connected to the front side of the outer wall of the outer shell 8. A nameplate 16 is fixedly connected to the front end of the fixing block 15. The nameplate 16 is used to record the equipment information of the device. The bottom of the interception net 19 is treated with wear resistance. A friction pad 23 is fixedly connected to the upper middle part of the front side of the outer wall of the fixing ring 1.

[0041] Specifically, the fixing block 15 provides installation space for the nameplate 16, which can record detailed product information of the equipment and provide key information for staff to inspect the equipment. After the interception net 19 is treated with wear resistance, its service life can be increased and the protection effect of the dust cover 12 can be improved. The friction pad 23 can provide greater friction to the eccentric wheel 5, so that the eccentric wheel 5 will not loosen and affect the tightness of the clamping ring 3.

[0042] Working principle: The device inserts the dust cover 12 from right to left, so that the left side of the dust cover 12 passes through the steering rod 10 and reaches the position of the fixing ring 1. At the same time, the right side of the dust cover 12 fits the support ring 11 fixed to the outer wall of the steering rod 10. The sealing cover 14 is screwed along the threaded groove 13 at the right end of the dust cover 12, and the right end of the dust cover 12 is fixed and sealed through the threaded connection. When the left side of the dust cover 12 is inside the clamping ring 3, the handle 6 is pulled, causing the handle 6 to drive the eccentric wheel 5 to rotate. At this time, the two ends of the clamping ring 3 are respectively connected to the two sides of the eccentric wheel 5. The rotational characteristics of the eccentric wheel 5 convert the circumferential motion of the eccentric wheel 5 into the left and right clamping rings. The linear motion at both ends of the 3-head and 4-tail rings, as the head and tail ends of the clamping ring 3 are continuously stretched, reduces the internal range of the clamping ring 3, thereby firmly fixing the left end of the dust cover 12 and ensuring that the surface of the left end of the dust cover 12 is evenly stressed and will not deform, thus enhancing the dust cover 12's sealing performance against dust. The buckle 7 is opened, and as the handle 6 is pressed down, the dust cover 12 is fixed. The handle 6 also rotates to the fixing range of the buckle 7. At this time, the buckle 7 is re-engaged, thereby fixing the handle 6 and preventing the eccentric wheel 5 from rotating, which would affect the clamping effect of the clamping ring 3. This allows the dust cover 12 to be installed quickly, facilitating the installation and replacement of the dust cover 12.

[0043] Furthermore, when vehicles pass through flooded sections of road, water may seep through the seams of the dust cover 12. At this time, the spiral guide groove 202, which is located on the contact surface between the left end of the dust cover 12 and the support ring 201, plays a role. The spiral guide groove 202 guides the flow of water through its tortuous path, guiding the seeping water through the drainage hole 203 into the water storage chamber 204. As the amount of seeping water stored in the water storage chamber 204 increases, the water pressure also gradually increases, allowing the water to enter the drainage pipe 205. This opens the one-way valve 206 installed inside the drainage pipe 205, thereby guiding the water out. The one-way valve 206 prevents external water from flowing back into the drainage pipe 205. By actively guiding the drainage, the seepage of water is prevented from corroding the internal mechanical parts.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof and waterproof sealing reinforcing structure for a power steering gear, comprising a fixing ring (1), characterized in that: The inner wall of the fixed ring (1) is slidably connected with a ferrule (3), the left and right ends of the ferrule (3) penetrate the fixed ring (1) and are fixedly connected with a fixed sheet (4), the adjacent side of the two fixed sheets (4) is rotatably connected with the same eccentric wheel (5), the outer wall front end of the eccentric wheel (5) is fixedly connected with a handle (6), the outer wall front side middle part of the fixed ring (1) is fixedly connected with a buckle (7), the inner side of the fixed ring (1) is fixedly connected with an outer shell (8), the inside of the outer shell (8) is slidably connected with a drive shaft (9), the right end of the drive shaft (9) is rotatably connected with a steering drag link (10), the outer wall middle part of the steering drag link (10) is fixedly connected with a support ring two (11), the adjacent side of the support ring two (11) and the fixed ring (1) is provided with a dust cover (12), the outer wall right end of the dust cover (12) is provided with a threaded groove (13), the right side of the dust cover (12) is threadedly connected with a sealing cover (14), the right side of the fixed ring (1) is provided with a waterproof mechanism (2), the waterproof mechanism (2) is used for guiding the water infiltrated at the joint to drain out.

2. The dust and water resistant seal reinforcement structure for a power steering gear characterized by comprising: The waterproof mechanism (2) comprises a support ring one (201) and a one-way valve (206), the support ring one (201) is fixedly connected to the right end of the fixed ring (1), the outer wall of the support ring one (201) is provided with a spiral flow guide groove (202), the top of the support ring one (201) is provided with a drainage hole (203), the inner right side of the support ring one (201) is provided with a water storage cavity (204), the bottom left side of the water storage cavity (204) is communicated with a drain pipeline (205), the left end of the drain pipeline (205) penetrates the fixed ring (1), and the inner wall middle part of the drain pipeline (205) is provided with the one-way valve (206).

3. The dust and water resistant seal reinforcement structure for a power steering gear characterized by comprising: The outer wall front side of the outer shell (8) is fixedly connected with a fixed block (15), and the front end of the fixed block (15) is fixedly connected with a nameplate (16).

4. The dust and water resistant seal reinforcement structure for a power steering gear characterized by comprising: a seal member; a seal member support member; a seal member support member support member; and a seal member support member support member support member. The outer side of the handle (6) is fixedly connected with a sheath (17), and the outer wall of the sheath (17) is provided with an anti-skid treatment.

5. The dust and water resistant seal reinforcement structure for a power steering gear characterized by comprising: a seal member; a seal member support member; a seal member support member support member; and a seal member support member support member support member. The outer wall front and rear sides of the fixed ring (1) and the sealing cover (14) are fixedly connected with a connecting ring (18), and the inside of the connecting ring (18) is provided with a spring buckle (21).

6. The dust and water resistant seal reinforcement structure for a power steering gear characterized by comprising: a seal member; a seal member support member; a seal member support member support member; and a seal member support member support member support member. The bottom of the fixed ring (1) and the sealing cover (14) is fixedly connected with the same intercepting net (19), and the four corners of the intercepting net (19) are provided with connecting holes (20).

7. The dust and water resistant seal reinforcement for a power steering unit as set forth in claim 6, further characterized by: The bottom of the intercepting net (19) is provided with wear-resistant treatment, and the outer wall front side middle part of the fixed ring (1) is fixedly connected with a friction pad (23).

8. The dust and water resistant seal reinforcement for a power steering unit as set forth in claim 2, wherein: The left and right end inner diameters of the dust cover (12) are matched with the outer diameters of the support ring one (201) and the support ring two (11) in size, and the right end of the outer shell (8) is fixedly connected with a sealing ring (22).

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