Sealing assembly for steering gear adjusting screw plug, steering gear and vehicle

Abstract

The embodiment of the invention provides a sealing assembly for an adjusting screw plug of a steering gear, the steering gear and a vehicle, the sealing assembly comprises an outer layer sealing plug, the outer layer sealing plug is provided with a through hole, the through hole is formed in the axial direction of the outer layer sealing plug in a penetrating mode, and the outer layer sealing plug is used for being matched with an oil injection hole of the adjusting screw plug in an inserted mode; the inner-layer sealing plug is provided with a blocking position and an avoiding position, at least part of the blocking position extends into the through hole, the avoiding position is located outside the through hole, the inner-layer sealing plug is located at the blocking position, and the outer wall, extending into the through hole, of the inner-layer sealing plug abuts against the hole wall of the through hole so as to block the through hole. According to the scheme, the matching structure between the inner-layer sealing plug and the outer-layer sealing plug is simple, so that the insertion and extraction operation is simple, a special tool is not needed, the sealing performance between the adjusting screw plug and the outer-layer sealing plug cannot be damaged, and the overall sealing performance of the steering gear can be improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of steering gears, in particular to a sealing assembly for a steering gear adjusting plug, a steering gear and a vehicle. BACKGROUND

[0002] The steering gear is a core element of a steering system, and after long-term use, the gear rack meshing gap may increase, resulting in steering abnormal sound, slow response and other problems. Therefore, the maintenance of the steering gear becomes an important link of after-sales service, and adding lubricating oil is one of the effective means to restore the performance of the steering gear.

[0003] The replenishment of the internal grease of the steering gear depends on the adjusting plug, that is, the grease is added by unscrewing the adjusting plug or removing the rubber sealing plug thereon, and both methods have obvious defects: the former is tedious to operate, and frequent rotation of the adjusting plug may affect its sealing performance, possibly causing grease leakage or dust entering, affecting the normal work of the steering gear; the latter does not damage the adjusting plug, but the removal of the rubber sealing plug is difficult, and in the absence of professional tools, only methods such as hand clamping and pick-up prying can be used, which is very low in work efficiency and easy to damage the rubber sealing plug. In vehicles that have been used for a long time, the damage rate is greatly improved due to aging of the rubber, thereby affecting the overall sealing performance of the steering gear and reducing its service life.

[0004] For the technical problem of the existing technology that the adding method of the internal grease of the steering gear easily damages the rubber sealing plug and affects the overall sealing performance of the steering gear, there is currently no good solution. SUMMARY

[0005] The embodiment of the present application provides a sealing assembly for a steering gear adjusting plug, a steering gear and a vehicle to at least solve the technical problem in the prior art that the adding method of the internal grease of the steering gear easily damages the rubber sealing plug and affects the overall sealing performance of the steering gear.

[0006] According to an aspect of the embodiment of the present application, a sealing assembly for a steering gear adjusting plug is provided, comprising: an outer sealing plug, the outer sealing plug having a through hole, the through hole being provided through the outer sealing plug in the axial direction, and the outer sealing plug being used for plug-in cooperation with an oil injection hole of the adjusting plug; and an inner sealing plug, the inner sealing plug having a plugging position at least partially extending into the through hole, and having a avoiding position outside the through hole, the inner sealing plug being located at the plugging position, and an outer wall of the inner sealing plug extending into the through hole abutting against a hole wall of the through hole to plug the through hole.

[0007] Further, the inner sealing plug comprises: a first plug body; a first boss provided on an outer wall of the first plug body, the first boss extending along a circumferential direction of the first plug body; when the inner sealing plug is located at the plugging position, part of the first plug body extends into the through hole, and the first boss abuts against an end surface of the outer sealing plug.

[0008] Further, one of the outer wall of the first plug body and a hole wall of the through hole is provided with a first protruding structure, and the other of the outer wall of the first plug body and the hole wall of the through hole is provided with a recessed structure, and when the inner sealing plug is located at the plugging position, the first protruding structure cooperates with the recessed structure.

[0009] Further, the outer wall of the first plug body is provided with the recessed structure, and the recessed structure is arranged away from the first boss.

[0010] Further, an end of the first plug body away from the first boss is provided with a first guide conical surface, and a cross-sectional dimension of the first guide conical surface decreases in a direction away from the first boss.

[0011] Further, the outer sealing plug comprises: a second plug body, the second plug body being provided with a through hole, the through hole extending through the second plug body in an axial direction of the second plug body; a second boss provided on an outer wall of the second plug body, the second boss extending along a circumferential direction of the second plug body, the second boss being used for abutting against a first end surface of the adjusting plug; and a third boss provided on the outer wall of the second plug body, the third boss extending along the circumferential direction of the second plug body, the third boss being arranged in the axial direction of the second plug body and spaced apart from the second boss, the third boss being used for abutting against a second end surface of the adjusting plug, and a limiting groove for accommodating the adjusting plug being formed between the third boss and the second boss.

[0012] Further, the outer wall of the second plug body is provided with a second protruding structure, and the second protruding structure is arranged between the second boss and the third boss.

[0013] Further, the second boss is arranged close to an insertion end of the second plug body, the insertion end of the second plug body is provided with a second guide conical surface, and a cross-sectional dimension of the second guide conical surface decreases in a direction from the third boss to the second boss.

[0014] According to another aspect of the embodiments of the present application, a steering device is also provided, comprising: a housing provided with a mounting cavity; an adjusting plug connected with the housing, the adjusting plug being provided with an oil injection hole communicated with the mounting cavity, and the oil injection hole being provided with a sealing assembly, the sealing assembly being the sealing assembly described above.

[0015] According to another aspect of the embodiments of the present application, a vehicle is also provided, the vehicle comprising the steering device described above.

[0016] In this embodiment, the outer wall of the outer sealing plug and the wall of the oil filling hole of the adjusting screw plug are in a sealing contact to prevent the formation of a gap between the outer sealing plug and the oil filling hole, thereby preventing oil leakage and foreign objects from entering the steering gear through the gap. The outer sealing plug is more difficult to insert and remove than the adjusting screw plug, requiring a special tool and easily causing damage. The outer sealing plug has a through hole communicating with the inside of the steering gear, and the inner sealing plug is detachably disposed within the through hole. By removing the inner sealing plug, the oil filling hole can be opened for grease filling. In the above solution, the mating structure between the inner and outer sealing plugs is simple, making insertion and removal operations easy, requiring no special tools, and not damaging the seal between the adjusting screw plug and the outer sealing plug, thus helping to improve the overall sealing performance of the steering gear. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the sealing assembly in this application;

[0019] Figure 2 This is a schematic diagram of the inner sealing plug in this application;

[0020] Figure 3 This is a schematic diagram of the outer sealing plug in this application;

[0021] Figure 4 This is a partial schematic diagram of the steering gear in this application.

[0022] The above figures include the following reference numerals:

[0023] 1. Outer sealing plug;

[0024] 11. Through hole; 12. First protrusion structure; 13. Second plug; 14. Second boss; 15. Third boss; 16. Second protrusion structure; 17. Second guide cone surface; 18. Limiting groove;

[0025] 2. Inner sealing plug;

[0026] 21. First plug body; 22. First boss; 23. Recessed structure; 24. First guide cone surface;

[0027] 3. Adjust the screw plug;

[0028] 4. Pressing block; 41. Oil passage;

[0029] 5. Spring;

[0030] 6. Shell;

[0031] 7. Gear rack;

[0032] 8. Tighten the nut. Detailed Implementation

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

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0036] Combination Figures 1 to 4 As shown, according to a specific embodiment of this application, a sealing assembly for a steering gear adjusting screw 3 is provided.

[0037] Specifically, the sealing assembly includes an outer sealing plug 1 and an inner sealing plug 2. The outer sealing plug 1 has a through hole 11, which extends axially through the outer sealing plug 1 and is used to engage with the oil filling hole of the adjusting screw plug 3. The inner sealing plug 2 has a sealing position that extends at least partially into the through hole 11 and a clearance position that is located outside the through hole 11. The inner sealing plug 2 is located in the sealing position, and the outer wall of the inner sealing plug 2 extending into the through hole 11 abuts against the hole wall of the through hole 11 to seal the through hole 11.

[0038] In this embodiment, the outer wall of the outer sealing plug 1 and the wall of the oil filling hole of the adjusting screw plug 3 form a sealing contact to prevent gaps from forming between the outer sealing plug 1 and the oil filling hole, thereby preventing oil leakage and foreign objects from entering the steering gear through the gaps. The outer sealing plug 1 is more difficult to insert and remove than the adjusting screw plug 3, requiring special tools and easily causing damage. The outer sealing plug 1 has a through hole 11 communicating with the inside of the steering gear, and the inner sealing plug 2 is detachably disposed within the through hole 11. The oil filling hole can be opened by removing the inner sealing plug 2, allowing for grease filling. In the above solution, the mating structure between the inner sealing plug 2 and the outer sealing plug 1 is simple, making insertion and removal easy without the need for special tools, and without damaging the seal between the adjusting screw plug 3 and the outer sealing plug 1, thus helping to improve the overall sealing performance of the steering gear.

[0039] Understandably, in order to enhance the connection stability between the sealing plug and the adjusting screw plug 3 in the prior art, in addition to the interference fit, a limiting structure is provided between the sealing plug and the adjusting screw plug 3 to prevent the sealing plug in the prior art from moving relative to the adjusting screw plug 3. Therefore, the sealing plug in the prior art is more difficult to insert and remove relative to the adjusting screw plug 3.

[0040] Similarly, a limiting structure is provided between the outer sealing plug 1 and the adjusting screw plug 3 in this application, thereby preventing the outer sealing plug 1 from moving relative to the adjusting screw plug 3.

[0041] For example, in the embodiments of this application, the inner sealing plug 2 is made of highly elastic rubber so that the inner sealing plug 2 can maintain good elastic recovery performance and shape memory ability after being subjected to multiple insertions and removals, and will not be permanently deformed due to being pulled out, so that a tight seal can still be formed when reinserted.

[0042] Furthermore, the inner sealing plug 2 includes a first plug body 21 and a first boss 22. The first boss 22 is disposed on the outer wall of the first plug body 21 and extends circumferentially along the first plug body 21. When the inner sealing plug 2 is in the sealing position, a portion of the first plug body 21 extends into the through hole 11, and the first boss 22 abuts against the end face of the outer sealing plug 1.

[0043] In the embodiments of this application, when the inner sealing plug 2 is in the sealing position, the first protrusion 22 abuts tightly against the end face of the outer sealing plug 1, increasing the number of sealing points between the inner sealing plug 2 and the outer sealing plug 1, thereby helping to improve the sealing performance between the inner sealing plug 2 and the outer sealing plug 1. Simultaneously, the first protrusion 22 serves a limiting function; that is, when the first protrusion 22 is in contact with the end face of the outer sealing plug 1, it indicates that the inner sealing plug 2 is properly installed.

[0044] like Figure 1 , Figure 2 As shown, the outer sealing plug 1 has a through hole 11, which extends through the outer sealing plug 1 along its axial direction. The inner sealing plug 2 includes a first plug body 21 and a first boss 22. The outer diameter of the first plug body 21 is slightly larger than the diameter of the through hole 11, so that the first plug body 21 and the outer sealing plug 1 are press-fitted. The first boss 22 is an annular structure and is formed on the outer wall of the first plug body 21. The first boss 22 is used to abut against the end face of the outer sealing plug 1.

[0045] Furthermore, a first protruding structure 12 is provided on one of the outer wall of the first plug body 21 and the hole wall of the through hole 11, and a recessed structure 23 is provided on the other of the outer wall of the first plug body 21 and the hole wall of the through hole 11. When the inner sealing plug 2 is in the sealing position, the first protruding structure 12 and the recessed structure 23 cooperate.

[0046] In the embodiments of this application, when the inner sealing plug 2 is in the blocking position, the first protruding structure 12 cooperates with the recessed structure 23, that is, the first protruding structure 12 is embedded in the recessed structure 23, thereby increasing the friction between the first plug body 21 and the outer sealing plug 1. This friction helps the inner sealing plug 2 to remain stable under high pressure or high vibration conditions, avoids relative displacement between the inner sealing plug 2 and the outer sealing plug 1 under high pressure or high vibration conditions, thereby preventing grease leakage, and at the same time resisting the intrusion of external impurities, ensuring good sealing performance.

[0047] like Figures 1 to 4 As shown, the outer wall of the first plug 21 is provided with a recessed structure 23, which is a plurality of V-shaped grooves formed on the outer wall of the first plug 21. The plurality of V-shaped grooves are distributed sequentially along the axial direction of the first plug 21, and each V-shaped groove extends circumferentially along the first plug 21. The wall of the through hole 11 is provided with a first protrusion structure 12, which is a plurality of V-shaped protrusions formed on the wall of the hole. The plurality of V-shaped protrusions are distributed sequentially along the axial direction of the through hole 11, and each V-shaped protrusion extends circumferentially along the through hole 11. The plurality of V-shaped protrusions and the plurality of V-shaped grooves are inserted and engaged in a one-to-one manner.

[0048] Preferably, the outer wall of the first plug 21 is provided with a recessed structure 23, which is located away from the first protrusion 22.

[0049] In the embodiments of this application, a recessed structure 23 is provided on the outer wall of the first plug 21. This recessed structure 23 is formed by removing material. During the insertion of the first plug 21 into the through hole 11, and before contacting the first protruding structure 12, the resistance between the first plug 21 and the hole wall of the through hole 11 does not increase, thus reducing insertion resistance and making operation easier. The recessed structure 23 is positioned away from the first protrusion 22, that is, close to the insertion end of the first plug 21. This means that the first plug 21 only contacts the first protruding structure 12 on the hole wall when it is nearly in place, further reducing insertion resistance. During removal, the first plug 21 separates from the first protruding structure 12 earlier, thereby reducing removal resistance during the removal process.

[0050] Furthermore, such as Figure 2 As shown, the first plug body 21 has a first guide cone surface 24 at the end away from the first boss 22, and the cross-sectional dimensions of the first guide cone surface 24 decrease in the direction away from the first boss 22.

[0051] In the embodiments of this application, the first guide cone surface 24 is provided to guide the inner sealing plug 2 to be smoothly inserted into the through hole 11 of the outer sealing plug 1.

[0052] like Figures 1 to 3 As shown, the end of the first plug body 21 away from the first boss 22 is provided with a first guide cone surface 24. The radial dimension of the small cross-section end of the first guide cone surface 24 is smaller than the diameter of the through hole 11, thereby guiding the inner sealing plug 2 to be smoothly inserted into the through hole 11 of the outer sealing plug 1.

[0053] Further, the outer sealing plug 1 includes: a second plug body 13, a second boss 14, and a third boss 15. The second plug body 13 has a through hole 11, which extends axially through the second plug body 13. The second boss 14 is located on the outer wall of the second plug body 13, extending circumferentially along the second plug body 13, and is used to abut against the first end face of the adjusting screw plug 3. The third boss 15 is located on the outer wall of the second plug body 13, extending circumferentially along the second plug body 13. The third boss 15 and the second boss 14 are spaced apart axially along the second plug body 13, and the third boss 15 is used to abut against the second end face of the adjusting screw plug 3. A limiting groove 18 for accommodating the adjusting screw plug 3 is formed between the third boss 15 and the second boss 14.

[0054] In the embodiments of this application, the third protrusion 15 and the second protrusion 14 act as limiting structures, abutting against the end face of the adjusting screw plug 3 to prevent axial displacement between the outer sealing plug 1 and the adjusting screw plug 3 due to vibration, thereby ensuring a stable connection between the outer sealing plug 1 and the adjusting screw plug 3. Simultaneously, the second protrusion 14 abuts against the first end face of the adjusting screw plug 3, and the third protrusion 15 abuts against the second end face of the adjusting screw plug 3. That is, the third protrusion 15 and the second protrusion 14 increase the number of sealing points between the outer sealing plug 1 and the adjusting screw plug 3, thereby helping to improve the sealing performance between them.

[0055] Understandably, the arrangement of the third protrusion 15 and the second protrusion 14 makes it more difficult to insert or remove the outer sealing plug 1.

[0056] like Figure 3 , Figure 4 As shown, the second plug body 13 is provided with a through hole 11, which extends through the second plug body 13 along its axial direction. The second boss 14 and the third boss 15 are both annular structures, formed on the outer wall of the second plug body 13. The second boss 14 and the third boss 15 are spaced apart along the axial direction of the second plug body 13, and a limiting groove 18 is formed between the third boss 15 and the second boss 14. The outer diameter of the second plug body 13 is slightly larger than the diameter of the oil filling hole of the adjusting screw plug 3, meaning the second plug body 13 and the adjusting screw plug 3 are interference-fitted.

[0057] Furthermore, a second protrusion structure 16 is provided on the outer wall of the second plug 13, and the second protrusion structure 16 is located between the second boss 14 and the third boss 15.

[0058] In the embodiments of this application, the second protrusion structure 16 is provided to make the second plug 13 fit more tightly with the adjusting screw 3, thereby improving the sealing performance between the second plug 13 and the adjusting screw 3.

[0059] like Figure 3 As shown, the second protrusion structure 16 consists of two annular protrusions formed on the outer wall of the second plug body 13, and the two annular protrusions are spaced apart along the axial direction of the second plug body 13.

[0060] Furthermore, the second boss 14 is disposed near the insertion end of the second plug 13, and the insertion end of the second plug 13 is provided with a second guide cone 17, the cross-sectional dimension of the second guide cone 17 decreasing along the direction from the third boss 15 to the second boss 14.

[0061] In the embodiments of this application, the second guide cone surface 17 is provided to guide the outer sealing plug 1 to be smoothly inserted into the oil injection hole of the adjusting screw plug 3.

[0062] like Figure 3 , Figure 4As shown, the insertion end of the second plug body 13 is provided with a second guide cone surface 17. The radial dimension of the small cross-section end of the second guide cone surface 17 is smaller than the diameter of the oil injection hole, thereby guiding the outer sealing plug 1 to be smoothly inserted into the oil injection hole of the adjusting screw plug 3.

[0063] According to another specific embodiment of this application, a steering mechanism is also provided.

[0064] Specifically, the steering gear includes a housing 6 and an adjusting plug 3. The housing 6 has a mounting cavity, the adjusting plug 3 is connected to the housing 6, and the adjusting plug 3 has an oil filling hole communicating with the mounting cavity. A sealing component is provided in the oil filling hole, and the sealing component is the sealing component in the above embodiment.

[0065] like Figure 4 As shown, the steering gear housing 6 contains a gear, a rack 7, a pressure block 4, an adjusting screw plug 3, and a spring 5. The gear meshes with the rack 7, and the adjusting screw plug 3 is threadedly connected to the housing 6. A sealing component is provided at the oil filling hole of the adjusting screw plug 3, which is the sealing component in the above embodiment. The outer wall of the pressure block 4 is in contact with the inner wall of the housing 6. The pressure block 4 contains an oil passage 41, which is connected to the interior of the housing 6 and to the oil filling hole of the adjusting screw plug 3. One end of the pressure block 4 abuts against the rack 7, and the other end of the pressure block 4 abuts against the adjusting screw plug 3 via the spring 5. By turning the adjusting screw plug 3, the spring 5 is compressed, pushing the pressure block 4 to move relative to the housing 6, thereby pressing the rack 7 and the gear together. A locking nut 8 is provided at the end of the adjusting screw plug 3 away from the pressure block 4. The locking nut 8 is threadedly connected to the adjusting screw plug 3 and abuts against the end face of the housing 6.

[0066] According to another specific embodiment of this application, a vehicle is also provided, the vehicle including the steering gear in the above embodiments.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A seal assembly for a steering gear adjusting plug, comprising: The utility model relates to an outer layer sealing plug (1) with a through hole (11) penetrating through the axial direction of the outer layer sealing plug (1), which is used for plug-in cooperation with the oil injection hole of an adjusting screw plug (3). The utility model relates to an inner layer sealing plug (2) with a blocking position and a avoiding position, wherein the inner layer sealing plug (2) is located in the blocking position, and the outer wall of the inner layer sealing plug (2) extending into the through hole (11) abuts against the hole wall of the through hole (11) to block the through hole (11). The utility model relates to an inner layer sealing plug (2) comprising:

2. The seal assembly of claim 1, wherein, a first plug body (21); a first boss (22) arranged on the outer wall of the first plug body (21) and extending along the circumferential direction of the first plug body (21); when the inner layer sealing plug (2) is located in the blocking position, part of the first plug body (21) extends into the through hole (11), and the first boss (22) abuts against the end face of the outer layer sealing plug (1). One of the outer wall of the first plug body (21) and the hole wall of the through hole (11) is provided with a first protruding structure (12), and the other is provided with a recessed structure (23), and when the inner layer sealing plug (2) is located in the blocking position, the first protruding structure (12) cooperates with the recessed structure (23).

3. The seal assembly of claim 2, wherein, The recessed structure (23) is arranged away from the first boss (22) on the outer wall of the first plug body (21).

4. The seal assembly of claim 3, wherein, The end of the first plug body (21) away from the first boss (22) is provided with a first guide conical surface (24), and the cross-sectional dimension of the first guide conical surface (24) decreases in the direction away from the first boss (22).

5. The seal assembly of claim 2, wherein, The utility model relates to an outer layer sealing plug (1) comprising:

6. The seal assembly of any of claims 1 to 5, wherein, a second plug body (13) provided with the through hole (11) penetrating through the axial direction of the second plug body (13); a second boss (14) arranged on the outer wall of the second plug body (13) and extending along the circumferential direction of the second plug body (13), which is used for abutting against the first end face of the adjusting screw plug (3); a third boss (15) arranged on the outer wall of the second plug body (13) and extending along the circumferential direction of the second plug body (13), which is spaced apart from the second boss (14) along the axial direction of the second plug body (13), used for abutting against the second end face of the adjusting screw plug (3), and forms a limiting groove (18) for accommodating the adjusting screw plug (3) between the third boss (15) and the second boss (14). ​ 7. The seal assembly of claim 6, wherein, The outer wall of the second plug body (13) is provided with a second protruding structure (16), which is arranged between the second boss (14) and the third boss (15).

8. The seal assembly of claim 6, wherein, The second boss (14) is arranged close to the insertion end of the second plug body (13), and the insertion end of the second plug body (13) is provided with a second guide conical surface (17), the cross-sectional dimension of which decreases in the direction from the third boss (15) to the second boss (14).

9. A diverter characterized by, Comprise: A shell (6) provided with a mounting cavity; An adjusting screw plug (3) connected with the shell (6), the adjusting screw plug (3) has an oil injection hole in communication with the mounting cavity, and a sealing assembly is arranged in the oil injection hole, the sealing assembly is the sealing assembly in any one of claims 1 to 8.

10. A vehicle characterized by comprising: The vehicle comprises the diverter of claim 9.

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