Sealing structure and vehicle

Abstract

The invention discloses a sealing structure and a vehicle. The sealing structure comprises an intermediate shaft sleeved with a sealing piece, a mounting sleeve and a dust cover. The mounting sleeve is clamped to the sealing piece and arranged on the intermediate shaft in a sleeving mode, the axial direction of the intermediate shaft serves as the first direction, a guide boss is arranged at the end, in the first direction, of the mounting sleeve, and all the guide bosses gradually incline towards the direction close to the intermediate shaft in the direction close to and away from the mounting sleeve; the dustproof cover is provided with a mounting hole, the middle shaft penetrates through the mounting hole, the dustproof cover can abut against the guide boss on the groove wall of the mounting hole, and the mounting sleeve can move along with the middle shaft to be clamped to the dustproof cover. The mounting sleeve with the guide boss is clamped with the dust cover, so that the assembly process is simple and direct, and the assembly difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle intermediate shaft sealing, in particular to a sealing structure and a vehicle. BACKGROUND

[0002] In the existing steering system, the intermediate shaft is sealed with a sealing ring to reduce the entry of dust from the outside into the vehicle through the gap between the dust cover and the intermediate shaft. However, the existing dust cover assembly method is to directly clamp the outer side of the sealing ring in the dust cover to connect the sealing ring and the dust cover. However, since the installation position of the sealing ring is completely inside the dust cover, it is difficult to observe the position of the sealing ring when maintaining or assembling the parts at the intermediate shaft, which makes it difficult for workers to quickly assemble the dust cover on the intermediate shaft. Therefore, there is an urgent need for an intermediate shaft sealing structure that can solve the above problems. SUMMARY

[0003] The present application aims to provide a sealing structure to solve one or more technical problems in the prior art, at least to provide a beneficial option or create conditions.

[0004] The solution to the technical problem of the present application is: In a first aspect, the present application provides a sealing structure, comprising: an intermediate shaft sleeved with a sealing ring; a mounting sleeve clamped on the sealing ring and sleeved on the intermediate shaft, the mounting sleeve being provided with a guide boss at the end thereof in a first direction, the guide boss gradually tilting towards the intermediate shaft in the direction of approaching the mounting sleeve at each position; a dust cover provided with a mounting hole, the intermediate shaft being arranged in the mounting hole, the dust cover being capable of abutting against the guide boss at the groove wall of the mounting hole, and the mounting sleeve being capable of moving with the intermediate shaft to be clamped on the dust cover.

[0005] The technical solution at least has the following beneficial effects: first, the direct assembly of the dust cover and the sealing ring with multiple grooves is changed to the clamping of the mounting sleeve with a smooth surface, making the assembly process simple and direct, thereby reducing the assembly difficulty; second, the guide boss guides the mounting hole of the dust cover, so that the dust cover can be smoothly clamped on the mounting sleeve, reducing the process of adjusting the sealing ring in the dust cover by workers and speeding up the assembly.

[0006] As a further improvement of the above technical solution, a positioning groove is formed in the middle of the mounting sleeve in the circumferential direction, and the hole wall of the dust cover at the mounting hole is clamped in the positioning groove.

[0007] As a further improvement of the above technical solution, the intermediate shaft comprises a mounting section and a limiting section connected with each other, the sealing element is sleeved on the mounting section, and the limiting section has an outer diameter greater than an inner diameter of the sealing element.

[0008] As a further improvement of the above technical solution, the mounting sleeve comprises a first mounting part and a second mounting part arranged in sequence along a first direction, the first mounting part is detachably connected to the second mounting part, and the sealing element is positioned between the first mounting part and the second mounting part.

[0009] As a further improvement of the above technical solution, a plurality of first insertion blocks are circumferentially arranged at one end of the first mounting part close to the second mounting part, a first insertion slot is formed between two adjacent first insertion blocks, a plurality of second insertion blocks are circumferentially arranged at one end of the second mounting part close to the first mounting part, a second insertion slot is formed between two adjacent second insertion blocks, the first insertion block can be inserted into and positioned in the second insertion slot, and the second insertion block can be inserted into and positioned in the first insertion slot.

[0010] As a further improvement of the above technical solution, the mounting sleeve further comprises at least one intermediate connecting part, the intermediate connecting part is located between the first mounting part and the second mounting part, the intermediate connecting part is detachably connected to the first mounting part and the second mounting part, and at least two sealing elements are arranged in sequence along the first direction in the mounting sleeve, one of the sealing elements is installed between the first mounting part and the intermediate connecting part, and the other sealing element is installed between the second mounting part and the intermediate connecting part.

[0011] As a further improvement of the above technical solution, a plurality of third insertion blocks are circumferentially arranged at both ends of the intermediate connecting part along the first direction, a third insertion slot is formed between two adjacent third insertion blocks at the same end, the third insertion block can be inserted into and positioned in the first insertion slot or the second insertion slot, the first insertion block can be inserted into and positioned in the third insertion slot, and the second insertion block can be inserted into and positioned in the third insertion slot.

[0012] As a further improvement of the above technical solution, a plurality of intermediate connecting parts are arranged along the first direction on the intermediate shaft, the intermediate connecting parts are detachably connected, and the third insertion block can be inserted into and positioned in any third insertion slot on the intermediate connecting part.

[0013] As a further improvement of the above technical solution, the projections of the plurality of third insertion blocks at both ends of the intermediate connecting part in a plane perpendicular to a straight line along the first direction do not overlap each other.

[0014] In a second aspect, the application provides a vehicle comprising the sealing structure provided in the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described in the following. Obviously, the described drawings are only a part of the embodiments of the present application, and not all the embodiments. Those skilled in the art can also obtain other design schemes and drawings according to these drawings without any creative effort.

[0016] Figure 1 is a schematic diagram of the overall structure of the intermediate shaft sealing structure of the present application; Figure 2 is a front view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the first direction; Figure 3 is a sectional view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the second direction; Figure 2 Figure 4 is a sectional view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the second direction when the mounting sleeve and the sealing ring are ready to be assembled; Figure 2 Figure 5 is a sectional view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the second direction when the intermediate connecting part of the mounting sleeve and the sealing ring are ready to be assembled; Figure 2 Figure 6 is a sectional view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the second direction when the first mounting part of the mounting sleeve, the first sealing ring, the intermediate connecting part, the second sealing ring and the second mounting part are ready to be assembled; Figure 2 Figure 7 is a sectional view of the intermediate shaft sealing structure of the present application along a viewing angle parallel to the second direction when the mounting sleeve is provided with three sealing rings and is ready to be assembled. Figure 2 DETAILED DESCRIPTION

[0017] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0018] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.​​​​​

[0019] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described that the first, second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0020] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0021] In the steering system of the automobile, a sealing member such as a sealing ring or a bearing is sleeved on the intermediate shaft to seal between the intermediate shaft and the dust cover. Specifically, the worker will sleeve the sealing ring on the intermediate shaft, and then sleeve the dust cover on the intermediate shaft. The dust cover is provided with a clamping groove in the inside, and the sealing ring is clamped in the inside of the dust cover through the clamping groove, so as to realize the connection and sealing between the dust cover and the intermediate shaft through the sealing ring.

[0022] Most of the dust covers on the market are usually made of rubber material. When connecting the dust cover and the sealing ring, because the sealing ring is usually irregularly annular, and the assembly position of the sealing ring on the dust cover is completely located in the dust cover, it is difficult for the worker to observe the condition of the sealing ring in the dust cover. Usually, the sealing ring can only be forced into the groove in the dust cover. In this way, when the worker maintains the parts at the intermediate shaft, it is difficult to realize the quick disassembly and assembly of the dust cover, and the sealing ring and the dust cover are clamped by force, which can easily cause the rubber dust cover to be damaged and deformed, thereby causing sealing failure.

[0023] Therefore, the present application provides an intermediate shaft sealing structure and a vehicle which are convenient for quickly assembling the dust cover on the intermediate shaft.

[0024] In a first aspect, the present application provides a sealing structure, which refers to Figure 1 , Figure 2 and Figure 3The intermediate shaft 100 and the dust cover 200 are sleeved with the sealing element 400, which can be a bearing, a sealing ring 410, etc. In the embodiment, the sealing element 400 is the sealing ring 410, which has a K-shaped cross section. Specifically, the sealing ring 410 includes a first annular portion 411, a second annular portion 412 and a third annular portion 413, which are connected to each other at ends. The first annular portion 411 forms a long side of the K shape, and the second annular portion 412 and the third annular portion 413 form two short sides of the K shape, respectively. The first annular portion 411 and the second annular portion 412 form a first annular mounting groove 414 therebetween, and the first annular portion 411 and the third annular portion 413 form a second annular mounting groove 415 therebetween. The dust cover 200 is provided with a mounting hole, and the intermediate shaft 100 is arranged in the mounting hole. In the background art, before the improvement of the present application, when the sealing ring 410 is assembled with the dust cover 200, the first mounting groove 414 and the second mounting groove 415 are clamped by the dust cover 200, so as to clamp the sealing ring 410 by the dust cover 200.

[0025] The intermediate shaft 100 sealing structure further includes a mounting sleeve 300, which has a smooth surface and covers and clamps the outside of the sealing ring 410. The mounting sleeve 300 is sleeved with the intermediate shaft 100, that is, the connection between the mounting sleeve 300 and the sealing ring 410 realizes the connection between the mounting sleeve 300 and the intermediate shaft 100. The two ends of the mounting sleeve 300 in the first direction are provided with guide bosses 301, which are gradually inclined towards the intermediate shaft 100 in the direction of approaching and leaving the mounting sleeve 300. When the intermediate shaft 100 is arranged in the mounting hole for assembling the dust cover 200, the groove wall of the dust cover 200 at the mounting hole can abut against the guide boss 301, and the mounting sleeve 300 can move with the intermediate shaft 100 to be clamped in the dust cover 200.

[0026] As can be seen from the above, when assembling the dust cover 200, first, the sealing ring 410 is assembled to the mounting sleeve 300, and the sealing ring 410 and the mounting sleeve 300 are integrally sleeved on the intermediate shaft 100 at a predetermined position, and then the intermediate shaft 100 passes through the mounting hole of the dust cover 200. At this time, the aperture of the dust cover 200 at the mounting hole first contacts the guide boss 301, because the dust cover 200 moves relative to the guide boss 301 in the first direction and towards the mounting sleeve 300. At this time, the dust cover 200 first contacts the inclined end of the guide boss 301 towards the intermediate shaft 100. In the moving process, the guide boss 301 causes the dust cover 200 made of rubber to elastically deform, and the aperture at the mounting hole becomes larger, so that the dust cover 200 can be smoothly sleeved on the mounting sleeve 300. When the dust cover 200 moves to no longer abut against the guide boss 301, the aperture of the dust cover 200 at the mounting hole is reduced and is sleeved on the mounting sleeve 300, and the mounting sleeve 300 and the sealing ring 410 realize the clamping of the dust cover 200 and the intermediate shaft 100.

[0027] Through the scheme, after the mounting sleeve 300 is assembled on the intermediate shaft 100, the dust cover 200 is sleeved on the intermediate shaft 100 along the extension direction of the guide boss 301 to the mounting sleeve 300, so that the assembly of the dust cover 200 is realized. Therefore, the scheme has the following effects: Firstly, the assembly of the dust cover 200 and the sealing member 400 with a plurality of groove positions is changed to the clamping of the dust cover 200 and the mounting sleeve 300 with a smooth surface, so that the assembly process is simple and direct, thereby reducing the assembly difficulty. Secondly, the guide boss 301 guides the mounting hole of the dust cover 200, so that the dust cover 200 can be clamped on the mounting sleeve 300, thereby reducing the process of adjusting the sealing ring 410 in the dust cover 200 by workers, and accelerating the assembly speed.

[0028] In order to position the dust cover 200 moved to the outer surface of the mounting sleeve 300 on the mounting sleeve 300, a positioning groove is formed in the middle of the mounting sleeve 300 in the circumferential direction. The positioning groove is located between the two guide bosses 301. The maximum height of the guide boss 301 in the radial direction of the intermediate shaft 100 is greater than the height of the groove bottom of the positioning groove in the radial direction of the intermediate shaft 100. When the dust cover 200 moves to the inner wall of the mounting hole and completely passes the guide boss 301, the dust cover 200 restores by its elastic deformation, so that the aperture of the mounting hole is reduced, thereby adapting to the positioning groove on the mounting sleeve 300, and the dust cover 200 is clamped on the mounting sleeve 300, so as to be relatively fixed with the intermediate shaft 100 in the first direction.

[0029] In order to limit the movement of the dust cover 200 on the intermediate shaft 100 in the first direction and towards the steering wheel, with reference to Figure 3, the intermediate shaft 100 comprises a mounting section 101 and a limiting section 102 connected in sequence and integrally formed, the outer diameter of the limiting section 102 is greater than that of the mounting section 101, the outer diameter of the limiting section 102 is greater than the inner diameter of the sealing ring 410, according to the assembly requirement, the first direction at this time is inclined downward, the mounting section 101 is located below the limiting section 102, the dust cover 200, the mounting sleeve 300 and the sealing element 400 are all mounted on the mounting section 101, by changing the diameter of part of the section of the intermediate shaft 100, the dust cover 200 can be limited through the connection of the sealing element 400 and the mounting sleeve 300, preventing the dust cover 200 from moving excessively at the connecting part with the intermediate shaft 100, so that the part moves excessively relative to other parts, causing damage to the dust cover 200.

[0030] As a further embodiment of the above embodiment, the intermediate shaft 100 is a hollow structure, a plurality of reinforcing ribs extending in the first direction are arranged in the mounting section 101 in a circumferential direction, the stiffness of the intermediate shaft 100 at the mounting section 101 is improved through the reinforcing ribs, thereby providing a good connection basis for the connection of the intermediate shaft 100 and the dust cover 200.

[0031] In order to facilitate workers to assemble the sealing element 400 and completely hide it in the mounting sleeve 300, with reference to Figure 4 , the mounting sleeve 300 comprises a first mounting part 310 and a second mounting part 320 arranged in sequence in the first direction, the first mounting part 310 is detachably connected to the second mounting part 320, the sealing element 400 is positioned between the first mounting part 310 and the second mounting part 320, specifically, the first mounting part 310 is provided with a first clasp 311 inside, the second mounting part 320 is provided with a second clasp 321 inside, when the first mounting part 310 and the second mounting part 320 are connected, the first clasp 311 is inserted into the first mounting groove 414 of the sealing ring 410, and the second clasp 321 is inserted into the second mounting groove 415 of the sealing ring 410, thereby forming the fixation of the entire sealing ring 410 in the mounting sleeve 300, and then the mounting sleeve 300 and the sealing ring 410 are completely sleeved into the intermediate shaft 100, thereby completing the assembly of the sealing ring 410 and the mounting sleeve 300 on the intermediate shaft 100, and the assembly process is simple and fast.

[0032] As can be seen from the above, when assembling a sealing ring 410, only the first mounting part 310 and the second mounting part 320 are used to fix the sealing ring 410, and then the dust cover is clamped into the positioning groove of the mounting sleeve 300, thereby realizing the overall assembly of the sealing structure of the intermediate shaft 100.

[0033] As a further implementation of the above embodiment, the first mounting portion 310 is provided with a plurality of first insertion blocks 312 at one end thereof close to the second mounting portion 320 in a circumferential direction, and a first insertion slot 313 is formed between two adjacent first insertion blocks 312. The second mounting portion 320 is provided with a plurality of second insertion blocks 322 at one end thereof close to the first mounting portion 310 in a circumferential direction, and a second insertion slot 323 is formed between two adjacent second insertion blocks 322. The first insertion block 312 can be inserted into and positioned in the second insertion slot 323, and the second insertion block 322 can be inserted into and positioned in the first insertion slot 313. As described above, when the first mounting portion 310 and the second mounting portion 320 are connected to each other, the first insertion block 312 and the second insertion block 322 are only required to be inserted into the corresponding slots, and the first mounting portion 310 and the second mounting portion 320 can be connected to each other by positioning between the two kinds of insertion blocks and the corresponding slots.

[0034] Specifically, the first mounting portion 310 and the second mounting portion 320 are of the same structure, i.e., the first insertion block 312 and the second insertion block 322 are of the same structure. Here, the first mounting portion 310 is taken as an example, and in actual operation, the second insertion block 322 on the second mounting portion 320 is also connected to the first insertion slot 313 on the first mounting portion 310 by the same structure. For details, refer to Figure 4 The first insertion block 312 is elastically connected to the first mounting portion 310, and the first insertion block 312 is provided with a clamping block 302 on a side thereof in a radial direction of the intermediate shaft 100 and away from the intermediate shaft 100. The second mounting portion 320 is provided with a clamping slot 303 on a slot wall of the second insertion slot 323 for insertion of the clamping block 302. An inclined surface is provided on an end of the clamping block 302 away from the intermediate shaft 100, and the inclined surface is gradually inclined away from the intermediate shaft 100 in a direction close to and away from the second mounting portion 320. After the first insertion block 312 is inserted into the second insertion slot 323, the clamping block 302 abuts against the side wall of the second insertion slot 323, and then drives the first insertion block 312 to elastically move relative to the first mounting portion 310 until the clamping block 302 is inserted into the clamping slot 303 and no longer abuts against the side wall of the second insertion slot 323. The first insertion block 312 returns to the original state, and the first insertion block 312 is positioned in the second insertion slot 323 by the clamping block 302 and the clamping slot 303. As described above, the second insertion block 322 is positioned in the first insertion slot 313 by the same technical means.

[0035] In some other embodiments, the side wall of the clamping groove 303 of the second mounting portion 320 can be elastically connected to the main structure of the second mounting portion 320. Specifically, the second mounting portion 320 is elastically connected with an elastic side wall at the second insertion groove 323, and the clamping groove 303 is formed in the elastic side wall. When the first insertion block 312 is inserted into the second insertion groove 323, the clamping block 302 will lift the elastic side wall, thereby providing space for the movement and insertion of the clamping block 302. As known from the above, because the first mounting portion 310 and the second mounting portion 320 have the same structure, the second insertion block 322 and the clamping block 302 thereon of the second mounting portion 320 can be inserted into the clamping groove 303 of the elastic side wall of the first mounting portion 310, thereby achieving the positioning effect.

[0036] Referring to Figures 5-7 In actual use of the intermediate shaft 100, a plurality of sealing rings 410 can be assembled according to the length of the intermediate shaft 100 to improve the sealing strength between the intermediate shaft 100 and the dust cover 200 through the synchronous action of the plurality of sealing rings 410. In addition, the dust cover 200 includes a plate-shaped portion and a cylindrical portion connected to each other, the cylindrical portion is arranged at the middle of the plate-shaped portion, the mounting hole is formed in the cylindrical portion, the intermediate shaft 100 passes through the cylindrical portion, the plate-shaped portion covers and is mounted to the vehicle body, and the cylindrical portion is also adjusted according to the length of the intermediate shaft 100 to improve the sealing strength.

[0037] Therefore, in order to install the sealing ring 410, the mounting sleeve 300 includes at least one intermediate connecting portion 330. The intermediate connecting portion 330 is annular, and the axis of the annular intermediate connecting portion 330 extends along a straight line parallel to the first direction. The intermediate connecting portion 330 is located between the first mounting portion 310 and the second mounting portion 320, and the two ends of the intermediate connecting portion 330 are respectively detachably connected to the first mounting portion 310 and the second mounting portion 320. At least two sealing rings 410 are arranged on the intermediate shaft 100 along the first direction at intervals. The first sealing ring 410 is installed between the intermediate connecting portion 330 and the first mounting portion 310, and the second sealing ring 410 is installed between the intermediate connecting portion 330 and the second mounting portion 320.

[0038] Specifically, the two ends of the intermediate connecting portion 330 along the first direction are both circumferentially arranged with a plurality of third insertion blocks 331. Two third insertion blocks 331 adjacent to each other at the same end form a third insertion groove 332. The third insertion block 331 can be inserted into and positioned in the first insertion groove 313 or the second insertion groove 323. The first insertion block 312 can be inserted into and positioned in the third insertion groove 332. The second insertion block 322 can be inserted into and positioned in the third insertion groove 332. That is, the first insertion block 312, the second insertion block 322 and the third insertion block 331 have the same structure. Therefore, the third insertion block 331 can be inserted into any first insertion groove 313 or any second insertion groove 323 to position and connect the end of the intermediate connecting portion 330 along the first direction with the first mounting portion 310 or the second mounting portion 320.

[0039] As a further implementation of the above embodiment, the plurality of intermediate connecting portions 330 are arranged along the first direction on the intermediate shaft 100, and the plurality of intermediate connecting portions 330 are detachably connected, and any third plug block 331 of any intermediate connecting portion 330 can be inserted into and positioned in any third plug slot 332 on an adjacent intermediate connecting portion 330.

[0040] Further, the third plug block 331 and the first plug block 312 or the second plug block 322 are structurally identical, the third plug slot 332 formed between the two adjacent third plug blocks 331 is structurally identical to the first plug slot 313 or the second plug slot 323, and the third plug block 331 is provided with the clamping block 302, and the side wall of the third plug slot 332 is communicated with the clamping slot 303, and the connection and positioning between the two adjacent intermediate connecting portions 330 are realized through the same clamping block 302 and clamping slot 303.

[0041] Specifically, referring to Figure 5 and Figure 6 , each third plug block 331 of the intermediate connecting portion 330 is provided with a clamping portion 333 on the side close to the intermediate shaft 100 along the radial direction of the intermediate shaft 100, each clamping portion 333 extends in the direction close to the intermediate shaft 100 along the radial direction of the intermediate shaft 100, and the end of each clamping portion 333 close to the intermediate shaft 100 is provided with a baffle plate 334 extending in the direction parallel to the first direction and away from the center of the intermediate connecting portion 330, the baffle plate 334 and the clamping portion 333 are integrally formed, and the second annular portion 412 or the third annular portion 413 of any sealing ring 410 is supported, when the intermediate connecting portion 330 is connected to the first mounting portion 310 or the second mounting portion 320, the baffle plate 334 of the intermediate connecting portion 330 is inserted into the first mounting slot 414 and the second mounting slot 415 of the sealing ring 410 respectively through the first clamping ring 311 or the second clamping ring 321, so as to fix the sealing ring 410 between the intermediate connecting portion 330 and the first mounting portion 310 or between the intermediate connecting portion 330 and the second mounting portion 320.

[0042] As can be seen from the above, when a plurality of sealing rings 410 need to be installed, for example, the number of sealing rings 410 is x, then the number of intermediate connecting portions 330 required is x-1, in this embodiment, as Figure 7As shown, two intermediate connecting parts 300 and three sealing rings 410 are taken as an example. In assembly, one side of the first sealing ring 410 is clamped on one side of the first mounting part 310, the first clamping ring 311 is inserted into the first annular groove of the first sealing ring 410, one side of the first intermediate connecting part 330 is clamped at the second annular groove of the first sealing ring 410, and then the first intermediate connecting part 330 is connected to the first mounting part 310, at this time the positioning of the first sealing ring 410 is formed, then one side of the second sealing ring 410 is clamped on the side of the first intermediate connecting part 330 away from the first mounting part 310, and then the second intermediate connecting part 330 is clamped on the first intermediate connecting part 330 to lock the second sealing ring 410 between the first intermediate connecting part 330 and the second intermediate connecting part 330, and so on, until a sufficient number of sealing rings 410 are arranged in the mounting sleeve 300, and finally the second mounting part 320 is connected to the last intermediate connecting part 330, and the last sealing ring 410 is positioned between the second mounting part 320 and the intermediate connecting part 330, at this time the mounting sleeve 300 formed by the first mounting part 310, the second mounting part 320 and the plurality of intermediate connecting parts 330 can be adapted to the cylindrical part of the dust cover 200 of sufficient length, so that the worker can adjust the overall length of the mounting sleeve 300 according to the existing length of the cylindrical part of the dust cover 200, so that the positioning groove on the mounting sleeve 300 can be stably clamped on the dust cover 200.

[0043] As a further embodiment, the projections of the third insertion blocks 331 at both ends of the intermediate connecting part 330 in the plane perpendicular to the straight line where the first direction lies do not coincide with each other. If the third insertion blocks 331 coincide with each other, the projections of the clamping grooves 303 at the adjacent third insertion grooves 332 in the same plane will coincide with each other, so that the length of the intermediate connecting part 330 at this position becomes longer. In this way, a space is formed for the arrangement of the clamping groove 303, and the length of the intermediate connecting part 330 is shortened, so that the length unit of the plurality of intermediate connecting parts 330 after being connected with each other is more accurate, and is suitable for dust covers with cylindrical parts of different lengths.

[0044] In a second aspect, the application also provides a vehicle comprising the intermediate shaft 100 sealing structure of the first aspect.

[0045] The preferred embodiments of the application are specifically described above, but the application is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A sealing structure, characterized in that: include: An intermediate shaft (100) is sleeved with a sealing member (400); A mounting sleeve (300) is clamped to the sealing member (400) and sleeved on the intermediate shaft (100), with the axial direction of the intermediate shaft (100) being a first direction, and a guide boss (301) is provided at an end of the mounting sleeve (300) along the first direction, wherein the guide boss (301) at each location gradually tilts toward the intermediate shaft (100) from approaching to away from the mounting sleeve (300); The dust cover (200) is provided with a mounting hole, the intermediate shaft (100) is passed through the mounting hole, the dust cover (200) can abut against the guide boss (301) at the groove wall of the mounting hole, and the mounting sleeve (300) can move with the intermediate shaft (100) to be engaged with the dust cover (200).

2. A sealing structure according to claim 1, characterized in that: A positioning groove is provided in the middle of the mounting sleeve (300) along the circumferential direction, and the hole wall of the dust cover (200) at the mounting hole is clamped in the positioning groove.

3. A sealing structure according to claim 1, characterized in that: The intermediate shaft (100) comprises a mounting section (101) and a limiting section (102) connected to each other, the sealing member (400) is sleeved on the mounting section (101), and the outer diameter of the limiting section (102) is larger than the inner diameter of the sealing member (400).

4. A sealing structure according to claim 1, characterized in that: The mounting sleeve (300) comprises a first mounting portion (310) and a second mounting portion (320) arranged in sequence along a first direction, the first mounting portion (310) being detachably connected to the second mounting portion (320), and the sealing member (400) being positioned between the first mounting portion (310) and the second mounting portion (320).

5. A sealing structure according to claim 4, characterized in that: A plurality of first plug-in blocks (312) are circumferentially spaced apart at one end of the first mounting portion (310) close to the second mounting portion (320), and a first slot (313) is formed between two adjacent first plug-in blocks (312). A plurality of second plug-in blocks (322) are circumferentially spaced apart at one end of the second mounting portion (320) close to the first mounting portion (310), and a second slot (323) is formed between two adjacent second plug-in blocks (322). The first plug-in block (312) can be inserted into the second slot (323) and positioned, and the second plug-in block (322) can be inserted into the first slot (313) and positioned.

6. A sealing structure according to claim 5, characterized in that: The mounting sleeve (300) further comprises at least one intermediate connecting portion (330), wherein the intermediate connecting portion (330) is located between the first mounting portion (310) and the second mounting portion (320), and the intermediate connecting portion (330) can be detachably connected to the first mounting portion (310) and the second mounting portion (320). At least two sealing members (400) are arranged in sequence along a first direction in the mounting sleeve (300), wherein one of the sealing members (400) is installed between the first mounting portion (310) and the intermediate connecting portion (330), and the other sealing member (400) is installed between the second mounting portion (320) and the intermediate connecting portion (330).

7. A sealing structure according to claim 6, characterized in that: A plurality of third inserting blocks (331) are circumferentially spaced apart at both ends of the intermediate connecting portion (330) along the first direction, and a third slot (332) is formed between two adjacent third inserting blocks (331) at the same end. The third inserting block (331) can be inserted into and positioned in the first slot (313) or the second slot (323), the first inserting block (312) can be inserted into and positioned in the third slot (332), and the second inserting block (322) can be inserted into and positioned in the third slot (332).

8. A sealing structure according to claim 7, characterized in that: A plurality of intermediate connecting parts (330) are arranged along a first direction on the intermediate shaft (100), and the plurality of intermediate connecting parts (330) can be detachably connected to each other. The third inserting block (331) can be inserted into any third slot (332) on an adjacent intermediate connecting part (330) and positioned.

9. A sealing structure according to claim 7, characterized in that: The projections of the plurality of third plug-in blocks (331) located at both ends of the intermediate connecting portion (330) in the first direction on a plane perpendicular to the straight line where the first direction is located do not overlap with each other.

10. A vehicle, characterized in that: It comprises a sealing structure as described in any one of claims 1-9.

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