Steering gear sealing structure and vehicle

Abstract

The utility model relates to a steering gear sealing structure and a vehicle. The steering gear sealing structure comprises a dust cover and a steering gear shell. The dust cover comprises a dust cover body and a sealing body, and the sealing body is used for abutting against a vehicle body; one of the dust cover body and the steering gear shell is provided with a clamping groove, the other one comprises a clamping part, and the clamping part is clamped with the clamping groove in the axial direction of the steering gear shell; in the first direction perpendicular to the axial direction of the steering gear shell, the size of the clamping part is at least larger than the minimum size of the clamping groove, so that two first side walls, oppositely arranged in the first direction, of the clamping part are in interference fit with two second side walls, oppositely arranged in the first direction, of the clamping groove respectively. According to the embodiment of the utility model, the dust cover body can be limited in the radial direction of the steering gear shell, and the dust cover can be prevented from deviating in the radial direction in the matching process of the dust cover and a vehicle body, so that a sealing body is prevented from entering a vehicle body via hole by mistake, and the sealing effect of the steering gear can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, concretely relates to a kind of steering gear sealing structure and vehicle. BACKGROUND

[0002] Steering gear is the core component of automobile steering system, and steering gear usually includes input shaft, rack, shell and the like, the input shaft has gear meshing with the rack, and the input shaft needs to pass through the body hole and be connected with the steering wheel inside the vehicle.

[0003] In related art, dust cover with rubber part is usually used to realize the sealing of the position where input shaft passes through the vehicle body. The rubber part is compressed against the vehicle body by the jacking force generated during the jacking cooperation between the chassis and the vehicle body, so as to realize the sealing effect.

[0004] However, during the cooperation between the dust cover and the vehicle body, the dust cover is assembled at a certain inclination angle with the steering gear, and the upward jacking force acting on the dust cover is decomposed into vertical force and tangential force along the radial direction of the dust cover. The tangential force will cause the position of the dust cover to be deflected, causing the rubber part to be abnormally extruded and deformed, and part of the rubber part penetrates into the body hole, thereby causing the sealing effect of the steering gear to be poor. SUMMARY

[0005] One of the purposes of the utility model is to provide a steering gear sealing structure to solve the technical problem of poor sealing effect of the steering gear caused by the deflection of the dust cover during the cooperation between the dust cover and the vehicle body in the prior art. The second purpose is to provide a vehicle.

[0006] In order to achieve the above-mentioned purposes, the technical scheme adopted by the utility model is as follows:

[0007] A steering gear sealing structure includes a dust cover and a steering gear shell.

[0008] The dust cover includes a dust cover body and a sealing body, and the sealing body is used to abut against the vehicle body.

[0009] One of the dust cover body and the steering gear shell is provided with a clamping groove, and the other includes a clamping portion, and the clamping portion is clamped with the clamping groove along the axial direction of the steering gear shell.

[0010] In the first direction perpendicular to the axial direction of the steering gear shell, the size of the clamping portion is at least greater than the minimum size of the clamping groove, so that the two first side walls oppositely arranged along the first direction of the clamping portion form interference with the two second side walls oppositely arranged along the first direction of the clamping groove.

[0011] Further, the clamping groove is provided on the dust cover body, and the steering gear shell includes the clamping portion.

[0012] The second side wall is a radial inclined slope of the dust cover body, which is inclined from the inside of the dust cover body to the outside of the dust cover body, the size of the clamping groove gradually decreases along the first direction, and the size of the clamping part is smaller than the maximum size of the clamping groove along the first direction.

[0013] Further, the dust cover body has a cavity extending through in the axial direction, and the cavity includes a first cavity and a second cavity matched with the steering gear housing;

[0014] The second cavity is provided with a sealing element, a step surface is formed at the intersection of the first cavity and the second cavity, the sealing element is located between the step surface and the steering gear housing along the axial direction of the cavity, and the sealing element is compressed under the axial extrusion of the steering gear housing.

[0015] Further, the sealing element includes a main sealing part and a limiting lug, a limiting hole communicating with the second cavity is formed on the shell insertion part of the dust cover body, the main sealing part is located in the second cavity, and the limiting lug is located in the limiting hole;

[0016] The limiting lug and the limiting hole each have two side walls oppositely arranged along a first direction, and the size of the limiting lug is greater than or equal to the size of the limiting hole along the first direction.

[0017] Further, the sealing element further includes an anti-falling lug connected to one side of the limiting lug away from the main sealing part;

[0018] The size of the anti-falling lug is greater than the size of the limiting lug along the first direction, and the anti-falling lug is located outside the shell insertion part.

[0019] Further, an avoiding hole is formed on the shell insertion part, and the avoiding hole communicates with the limiting hole through a guide hole;

[0020] The size of the avoiding hole is greater than the size of the anti-falling lug along the first direction, and the size of the guide hole gradually decreases in the direction from the avoiding hole to the guide hole, and the minimum size of the guide hole is smaller than the size of the limiting hole.

[0021] Further, the clamping groove is a through groove;

[0022] The size of the clamping part is greater than or equal to the size of the clamping groove along the radial direction of the steering gear housing.

[0023] Further, the steering gear housing includes a matching section matched with the second cavity, and the cross-sectional shape of the second cavity and the matching section is circular;

[0024] The diameter of the fitting section is less than the diameter of the second cavity, and the difference is greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0025] Further, the side wall of the second cavity is provided with a guide protrusion extending along the axial direction of the cavity.

[0026] The sealing member has a guide notch matched with the guide protrusion.

[0027] And / or, the steering gear housing is provided with a guide groove matched with the guide protrusion.

[0028] A vehicle comprising the steering gear sealing structure as described above.

[0029] The utility model discloses beneficial effects:

[0030] In the utility model embodiment, through the clamping of the clamping portion and the clamping groove, the dust cover body can be limited in the axial direction, in addition, through the interference formed by the first side wall and the second side wall, the dust cover body can be limited in the radial direction of the steering gear housing, in the cooperation process of the dust cover and the vehicle body, the position of the dust cover can be prevented from being deflected in the radial direction, so that the sealing body can be prevented from entering the through hole of the vehicle body by mistake, so that the sealing effect of the steering gear can be ensured, and the sealing effect of the steering gear can be prevented from being deteriorated. In addition, in the cooperation process of the dust cover and the vehicle body, the position of the dust cover can be prevented from being deflected in the radial direction, so that the sealing body and the input shaft of the steering gear can be prevented from being scratched, and further, the abnormal sound caused by the scratching can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 An assembly schematic view of the steering gear sealing structure provided by the utility model embodiment is shown in the figure.

[0032] Figure 2 A partial sectional view schematic view of the steering gear sealing structure provided by the utility model embodiment is shown in the figure.

[0033] Figure 3 A front view schematic view of the dust cover body in the steering gear sealing structure provided by the utility model embodiment is shown in the figure.

[0034] Figure 4 A Figure 3 A sectional view schematic view of A-A in the figure.

[0035] Figure 5 A schematic view of the limiting hole, the guide hole and the avoiding hole in the steering gear sealing structure provided by the utility model embodiment is shown in the figure.

[0036] Figure 6 A top view schematic view of the mounting lug in the steering gear sealing structure provided by the utility model embodiment is shown in the figure.

[0037] Figure 7 The utility model provides a main view schematic drawing of the steering gear casing in the steering gear sealing structure provided by the utility model embodiment;

[0038] Figure 8 The utility model provides a top view schematic drawing of the clamping portion in the steering gear sealing structure provided by the utility model embodiment;

[0039] Figure 9 The utility model provides a top view schematic drawing of the sealing element in the steering gear sealing structure provided by the utility model embodiment;

[0040] Figure 10 The utility model provides a side view schematic drawing of the sealing element in the steering gear sealing structure provided by the utility model embodiment.

[0041] Mark explanation:

[0042] 1 - dust cover body, 11 - casing insertion part, 111 - limit hole, 112 - guide hole, 113 - avoid hole, 12 - suspension, 121 - clamping groove, 1211 - second side wall, 1212 - second bottom wall, 13 - cavity, 131 - first cavity, 132 - second cavity, 14 - step surface, 15 - mounting lug, 2 - sealing body, 21 - lug, 3 - steering gear casing, 31 - clamping portion, 311 - first side wall, 312 - first bottom wall, 313 - guide inclined surface, 32 - fit section, 321 - guide groove, 4 - steering gear input shaft, 5 - sealing element, 51 - main sealing portion, 511 - guide notch, 52 - limit lug, 521 - third side wall, 53 - anti - drop lug. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described herein below with reference to the drawings and preferred embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in the present specification. The present application can also be implemented or applied in another different specific embodiment, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.

[0044] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout pattern can also be more complex.

[0045] In the related art, in the process of cooperating the dust cover with the vehicle body, the dust cover is assembled at an inclined angle with the steering gear, the upward jacking force acting on the dust cover is decomposed into a vertical force and a tangential force along the radial direction of the dust cover, the tangential force can cause the position of the dust cover to be deviated, causing the abnormal extrusion and deformation of the rubber part, and part of the rubber part penetrates into the through hole of the vehicle body, thereby causing the sealing effect of the steering gear to be poor. In order to solve the above problems, the utility model embodiment provides a steering gear sealing structure and a vehicle. The steering gear sealing structure and the vehicle mentioned above are specifically described below.

[0046] In the first aspect, with reference to Figure 1 、 Figure 3 、 Figure 7 and Figure 8 , the utility model embodiment provides a steering gear sealing structure, which comprises a dust cover and a steering gear shell 3; the dust cover comprises a dust cover body 1 and a sealing body 2, and the sealing body 2 is used for abutting against the vehicle body; one of the dust cover body 1 and the steering gear shell 3 is provided with a clamping groove 121, and the other comprises a clamping portion 31, the clamping portion 31 is clamped with the clamping groove 121 along the axial direction of the steering gear shell 3; along the first direction perpendicular to the axial direction of the steering gear shell 3, the size of the clamping portion 31 is at least greater than the minimum size of the clamping groove 121, so that the two first side walls 311 relatively arranged along the first direction of the clamping portion 31 form interference with the two second side walls 1211 relatively arranged along the first direction of the clamping groove 121.

[0047] Wherein, the steering gear sealing structure is applied to a vehicle. The steering gear sealing structure is a jacking straight pressure type sealing structure, and the jacking straight pressure type sealing structure has the characteristics of simple structure and strong sealing performance. The material of the dust cover body 1 is plastic, and the material of the sealing body 2 is rubber, silicone or the like. The dust cover body 1 has a cavity 13 penetrating along the axial direction, the cavity 13 is used for the steering gear input shaft 4 to pass through, and the cross-sectional shape of the cavity 13 is circular. The sealing body 2 comprises a plurality of sealing rings, and the sealing rings are used for abutting against the vehicle body to form sealing. The sealing body 2 is detachably connected with the dust cover body 1, with reference to Figure 1 、 Figure 3 and Figure 6 , the sealing body 2 comprises a hanging ear 21, the dust cover body 1 comprises a mounting lug 15, and the sealing body 2 is clamped on the dust cover body 1 through the cooperation of the hanging ear 21 and the mounting lug 15.

[0048] As an example, the dust cover body 1 is provided with the clamping groove 121, and the steering gear shell 3 comprises the clamping portion 31. As another example, the steering gear shell 3 is provided with the clamping groove 121, and the dust cover body 1 comprises the clamping portion 31. The axial direction of the steering gear shell 3 can be referred to Figure 1 、 Figure 2 、 Figure 7The direction shown by the middle B arrow. The clamping portion 31 includes an axially inclined guide slope 313 and a first bottom wall 312, and the clamping groove 121 has a second bottom wall 1212. After the clamping portion 31 is clamped with the clamping groove 121, the first bottom wall 312 of the clamping portion 31 is in contact with the second bottom wall 1212 of the clamping groove 121 to limit the dust cover body 1 in the axial direction. The number of clamping portions 31 can be one, two, three, four, etc., and the clamping groove 121 corresponds to the clamping portion 31 one by one.

[0049] The first direction is the direction in which the two first side walls 311 are oppositely arranged. The first direction can refer to the direction shown by the middle A arrow in Figure 1 、 Figure 3 and Figure 8 The direction shown by the middle C arrow. The size of the clamping portion 31 in the first direction can refer to W5 shown in Figure 8 , and the minimum size of the clamping groove 121 in the first direction can refer to W1 shown in Figure 3 . W5 is greater than W1. As an example, the size of the clamping portion 31 in the first direction is greater than the minimum size of the clamping groove 121 in the first direction, and less than the maximum size of the clamping groove 121 in the first direction. As another example, the size of the clamping portion 31 in the first direction is greater than the minimum size of the clamping groove 121 in the first direction, and greater than the maximum size of the clamping groove 121 in the first direction. The interference amount between the first side wall 311 and the second side wall 1211 can be set according to actual needs, for example, it can be set to 0.05mm-0.5mm.

[0050] In this embodiment, through the clamping of the clamping portion 31 and the clamping groove 121, the dust cover body 1 can be limited in the axial direction. In addition, through the interference formed by the first side wall 311 and the second side wall 1211, the dust cover body 1 can be limited in the radial direction of the steering gear housing 3. During the cooperation of the dust cover and the vehicle body, the position of the dust cover can be prevented from being deflected in the radial direction, so as to avoid the sealing body 2 from being mistakenly inserted into the through hole of the vehicle body, thereby ensuring the sealing effect of the steering gear and avoiding the sealing effect of the steering gear to be poor.

[0051] The sealing structure of the chassis and the vehicle body affects the improvement of the whole vehicle NVH (Noise, Vibration, Harshness, noise, vibration, and sound roughness) performance. In the related art, during the cooperation of the dust cover and the vehicle body, the position of the dust cover can be deflected in the radial direction, causing the rubber part to be abnormally extruded and deformed, thereby causing the rubber part to be scratched with the input shaft of the steering gear, and causing abnormal noise. In this embodiment, during the cooperation of the dust cover and the vehicle body, the position of the dust cover can be prevented from being deflected in the radial direction, so as to avoid the sealing body 2 from being scratched with the input shaft 4 of the steering gear, and further avoid the abnormal noise caused by the scratching.

[0052] In some embodiments, the slot 121 is formed on the dust cover body 1, and the steering housing 3 includes a snap-fit ​​portion 31; the second sidewall 1211 is a sloping surface that is radially inclined along the cavity 13 of the dust cover body 1, pointing from the inside of the dust cover body 1 to the outside of the dust cover body 1, and the size of the slot 121 gradually decreases along the first direction. Along the first direction, the size of the snap-fit ​​portion 31 is smaller than the maximum size of the slot 121.

[0053] The dust cover body 1 includes a housing insertion portion 11 that mates with the steering gear housing 3. The dust cover body 1 also includes a suspended portion 12 protruding from the bottom surface of the housing insertion portion 11. A slot 121 is formed on the suspended portion 12, with each suspended portion 12 corresponding to a slot 121. The insertion portion 31 can protrude radially from the outer side wall of the steering gear housing 3. The maximum dimension of the slot 121 along the first direction can be referenced... Figure 3 W2 is shown in the figure.

[0054] During the upward insertion of the steering gear housing 3 into the dust cover body 1, the engaging part 31 contacts the suspension part 12 and forces the suspension part 12 to tilt outward. As the steering gear housing 3 continues to be inserted until the first bottom wall 312 and the second side wall 1211 are at the same height, a portion of the engaging part 31 radially enters the slot 121. Then, by pressing inward onto the suspension part 12, the engaging part 31 is fully engaged in the slot 121, achieving an interference fit between the first side wall 311 and the second side wall 1211. In this embodiment, through the above-described configuration, during the engagement process between the engaging part 31 and the slot 121, a portion of the engaging part 31 can first enter the slot 121. The inclined surface of the second side wall 121 facilitates the pressing of the suspension part 12, thus achieving an interference fit between the first side wall 311 and the second side wall 1211.

[0055] In some embodiments, refer to Figure 2 and Figure 4 The cavity 13 includes a first cavity 131 and a second cavity 132 that cooperates with the steering gear housing 3. A seal 5 is provided in the second cavity 132. A stepped surface 14 is formed at the junction of the first cavity 131 and the second cavity 132. Along the axial direction of the cavity 13, the seal 5 is located between the stepped surface 14 and the steering gear housing 3. The seal 5 is compressed under the axial compression of the steering gear housing 3.

[0056] Specifically, the second cavity 132 mates with the mating section 32 of the steering gear housing 3, and the seal 5 is located between the stepped surface 14 and the mating section 32. The cross-sectional shapes of the first cavity 131 and the second cavity 132 are both circular, but the diameter of the second cavity 132 is larger than the diameter of the first cavity 131. The axial direction of the cavity 13 is aligned with the axial direction of the steering gear housing 3. The second cavity 132 is located within the housing insertion portion 11.

[0057] The thickness of the sealing member 5 cannot be designed too thin to avoid too small compression amount and reduced sealing performance, nor too thick to cause assembly difficulty and the dust cover body 1 to shake on the steering gear housing 3. The thickness of the main sealing part 51 of the sealing member 5 is at least greater than 0.5 mm. The thickness of the main sealing part 51 can be 4-6 mm, for example, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, etc. The thickness of the main sealing part 51 can refer to H5 shown in Figure 10 The thickness of the sealing member 5 is preferably 5 mm, and the compression amount of the sealing member 5 can be 2.5 mm. In the axial direction of the cavity 13, the distance between the second bottom wall 1212 of the clamping groove 121 and the stepped surface 14 is H1, and in the axial direction of the steering gear housing 3, the distance between the top surface of the steering gear housing 3 and the first bottom wall 312 of the clamping part 31 is H2, and H2 is equal to the difference between H1 and the compression amount of the sealing member 5.

[0058] In this embodiment, on the one hand, the sealing member 5 plays a sealing role to achieve sealing between the dust cover body 1 and the steering gear housing 3, and on the other hand, after the sealing member 5 is deformed by extrusion, an upward elastic force is generated and acts on the dust cover body 1, thereby tensioning the dust cover body 1 upward, so that the first bottom wall 312 of the clamping part 31 and the second bottom wall 1212 of the clamping groove 121 form reliable contact, thereby achieving stable fixation of the dust cover body 1 in the axial direction. How to effectively seal while facilitating vehicle assembly production and maintenance is an important direction for the optimization design of the sealing structure of the chassis and the vehicle body. In this embodiment, the dust cover body 1 is tensioned upward by the sealing member 5, so that the first bottom wall 312 of the clamping part 31 and the second bottom wall 1212 of the clamping groove 121 form reliable contact, which can reduce the precision requirement of the first bottom wall 312 of the clamping part 31 and the second bottom wall 1212 of the clamping groove 121, and facilitate assembly.

[0059] In some embodiments, referring to Figure 2 to Figure 5 , Figure 9 The sealing member 5 includes a main sealing part 51 and a limiting lug 52, and the shell insertion part 11 of the dust cover body 1 is provided with a limiting hole 111 communicating with the second cavity 132, the main sealing part 51 is located in the second cavity 132, and the limiting lug 52 is located in the limiting hole 111; the limiting lug 52 and the limiting hole 111 each have two side walls oppositely arranged in the first direction, and the size of the limiting lug 52 in the first direction is greater than or equal to the size of the limiting hole 111.

[0060] The main sealing part 51 is a circular ring. The number of the limiting lugs 52 can be one, two, three, four, etc. The shape of the limiting lug 52 can be rectangular, trapezoidal, etc., and the shape of the limiting hole 111 is consistent with that of the limiting lug 52. The size of the limiting lug 52 along the radial direction of the sealing element 5 is equal to the size of the limiting hole 111 along the radial direction of the cavity 13. The size of the limiting lug 52 along the radial direction of the sealing element 5 can refer to W9 shown in FIG. 13, and the size of the limiting hole 111 along the radial direction of the cavity 13 is the wall thickness of the shell plug-in part 11. The height of the limiting hole 111 is equal to the thickness of the limiting lug 52, which can be equal to or less than the thickness of the main sealing part 51. The height of the limiting hole 111 can refer to H3 shown in FIG. 13. Figure 9 Figure 5

[0061] The limiting lug 52 has two third side walls 521 oppositely arranged along the first direction, and the limiting hole 111 has two fourth side walls oppositely arranged along the first direction. The size of the limiting lug 52 along the first direction can refer to W8 shown in FIG. 13, and the size of the limiting hole 111 along the first direction can refer to W3 shown in FIG. 13. W8 is greater than or equal to W3. When W8 is equal to W3, the third side wall 521 is in contact with the fourth side wall. When W8 is greater than W3, the third side wall 521 and the fourth side wall form an interference. In this embodiment, the limiting lug 52 and the limiting hole 111 can limit the sealing element 5 along the radial direction. Figure 9 Figure 5 W8 is greater than W3. When W8 is equal to W3, the third side wall 521 is in contact with the fourth side wall. When W8 is greater than W3, the third side wall 521 and the fourth side wall form an interference. In this embodiment, the limiting lug 52 and the limiting hole 111 can limit the sealing element 5 along the radial direction.

[0062] In some embodiments, referring to Figure 1 , Figure 2 and Figure 9 , the sealing element 5 further comprises a anti-dropping lug 53 connected to the side of the limiting lug 52 away from the main sealing part 51; along the first direction, the size of the anti-dropping lug 53 is greater than that of the limiting lug 52, and the anti-dropping lug 53 is located outside the shell plug-in part 11.

[0063] The anti-dropping lug 53 corresponds to the limiting lug 52 one by one. The thickness of the anti-dropping lug 53 can be consistent with or greater than that of the limiting lug 52. The shape of the anti-dropping lug 53 can be consistent with that of the limiting lug 52. The size of the anti-dropping lug 53 along the first direction can refer to W7 shown in FIG. 13, and W7 is greater than W8, W8 is greater than W3, so W7 is greater than W3. In this embodiment, the anti-dropping lug 53 can prevent the limiting lug 52 from being pulled out of the limiting hole 111 along the radial direction. Figure 9

[0064] In some embodiments, referring to Figure 2 , Figure 3 , Figure 5 and Figure 9 ​​​​The shell insertion part 11 is provided with an avoiding hole 113, which is communicated with the limiting hole 111 through the guide hole 112; in the first direction, the size of the avoiding hole 113 is greater than that of the anti-dropping lug 53, in the direction from the avoiding hole 113 to the guide hole 112, the size of the guide hole 112 gradually decreases, and the minimum size of the guide hole 112 is smaller than that of the limiting hole 111.

[0065] The shape of the avoiding hole 113 and the limiting hole 111 can be rectangular. The limiting hole 111, the guide hole 112 and the avoiding hole 113 are collectively in the shape of an I-beam. The size of the avoiding hole 113 in the first direction can refer to W4 shown in Figure 5 W4 is greater than the size W7 of the anti-dropping lug 53 in the first direction. The height of the avoiding hole 113 is greater than or equal to the thickness of the anti-dropping lug 53, and the height of the avoiding hole 113 can refer to H4 shown in Figure 5

[0066] When the sealing element 5 is installed in the dust cover body 1, the sealing element 5 is first installed upward through the second cavity 132 of the dust cover body 1, and when the anti-dropping lug 53 and the avoiding hole 113 are at the same height, the anti-dropping lug 53 passes through the avoiding hole 113, the limiting lug 52 is located in the avoiding hole 113, and then the sealing element 5 is continuously installed upward, and in this process, the limiting lug 52 enters the limiting hole 111 through the guide hole 112. In this embodiment, the avoiding hole 113 and the guide hole 112 are arranged to facilitate the installation of the limiting lug 52 in the limiting hole 111; in addition, the minimum size of the guide hole 112 in the first direction is smaller than the size of the limiting hole 111 in the first direction, so that after the limiting lug 52 is installed in the limiting hole 111, the limiting lug 52 can be prevented from being axially separated from the limiting hole 111.

[0067] In some embodiments, the clamping groove 121 is a through groove; in the radial direction of the deflector shell 3, the size of the clamping part 31 is greater than or equal to the size of the clamping groove 121.

[0068] The radial direction of the cavity 13 is consistent with the radial direction of the deflector shell 3, and the size of the clamping groove 121 in the radial direction of the deflector shell 3 is also the size of the clamping groove 121 in the radial direction of the cavity 13. The clamping groove 121 is a through groove, which penetrates the suspension part 12, and the size of the clamping groove 121 in the radial direction of the cavity 13 is also the thickness of the suspension part 12. The size of the clamping part 31 in the radial direction of the deflector shell 3 can refer to Figure 8 ​The difference between the dimension of the clamping portion 31 along the radial direction of the deflector housing 3 and the dimension of the clamping groove 121 along the radial direction of the deflector housing 3 can be 0.5mm-1mm. When the clamping portion 31 is clamped with the clamping groove 121, the clamping portion 31 will extend out of the clamping groove 121 by 0.5mm-1mm. In the embodiment, the clamping portion 31 can be reliably inserted into the clamping groove 121, so that the first bottom wall 312 and the second bottom wall 1212 can form a larger contact area, thereby ensuring the clamping stability.

[0069] In some embodiments, the deflector housing 3 comprises a matching section 32 matched with the second cavity 132, the cross-sectional shape of the second cavity 132 and the matching section 32 is circular; the diameter of the matching section 32 is smaller than the diameter of the second cavity 132, and the difference is greater than or equal to 0.5mm and less than or equal to 1mm.

[0070] The diameter of the second cavity 132 can refer to D1 shown in Figure 4 The diameter of the matching section 32 can refer to D2 shown in Figure 7 The difference between the diameter of the matching section 32 and the diameter of the second cavity 132 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 1mm, etc. In the embodiment, the difference between the diameter of the matching section 32 and the diameter of the second cavity 132 is small, that is, the gap between the matching section 32 and the second cavity 132 is small, which can avoid the corrosion of the deflector housing 3 caused by residual silt.

[0071] In some embodiments, the side wall of the second cavity 132 is provided with a guide protrusion extending along the axial direction of the cavity 13; the sealing member 5 has a guide notch 511 matched with the guide protrusion; and / or, the deflector housing 3 is provided with a guide groove 321 matched with the guide protrusion. The dimension of the guide notch 511 along the radial direction of the sealing member 5 is smaller than the annular dimension of the main sealing portion 51. The height of the guide groove 321 along the axial direction of the deflector housing 3 is smaller than the height of the matching section 32. In the embodiment, the above-mentioned arrangement can realize the guided positioning of the sealing member 5 during the process of assembling the sealing member 5 into the dust cover body 1, and realize the guided positioning of the deflector housing 3 during the process of assembling the deflector housing 3 into the dust cover body 1.

[0072] The assembly process of the above-mentioned deflector sealing structure can be as follows:

[0073] The sealing member 5 is first loaded upward through the second cavity 132 of the dust cover body 1, and is loaded to the same height of the anti-off lug 53 and the avoiding hole 113, the anti-off lug 53 is passed through the avoiding hole 113, the limiting lug 52 is located in the avoiding hole 113, then the sealing member 5 is continuously loaded upward, in the process, the limiting lug 52 is passed through the guide hole 112 into the limiting hole 111, then the steering gear housing 3 is loaded again, the clamping part 31 is clamped with the clamping groove 121, the first side wall 311 and the second side wall 1211 form an interference, the steering gear housing 3 end is pressed against the sealing member 5, and a compression amount of about 2.5 mm is generated.

[0074] In the second aspect, the utility model provides a kind of vehicle, and the vehicle includes the steering gear sealing structure provided in the above first aspect.Because the vehicle includes the steering gear sealing structure described above, it also has the beneficial effects of the steering gear sealing structure described above, which will not be repeated here.

[0075] The vehicle provided in the embodiments of the utility model includes the steering gear sealing structure of any of the above embodiments, and to avoid repetition, will not be repeated here.

[0076] The above embodiments are only preferred embodiments for fully illustrating the utility model, and the protection scope of the utility model is not limited to this. Equivalent substitutions or transformations made by the skilled in the art on the basis of the utility model are within the protection scope of the utility model.

Claims

1. A steering gear seal arrangement, characterised in that, The dust cover comprises a dust cover body (1) and a sealing body (2) for abutting against a vehicle body; The dust cover body (1) and the steering gear housing (3) are provided with a clamping groove (121) and a clamping portion (31) respectively; The clamping portion (31) is provided with two first side walls (311) arranged opposite to each other along a first direction perpendicular to the axial direction of the steering gear housing (3), and the two first side walls (311) are in interference with two second side walls (1211) of the clamping groove (121) along the first direction. The clamping groove (121) is provided on the dust cover body (1), and the clamping portion (31) is provided on the steering gear housing (3); 2. The diverter seal structure of claim 1, wherein, The second side wall (1211) is an inclined surface inclined along the radial direction of the cavity (13) of the dust cover body (1) and directed from the inner side of the dust cover body (1) to the outer side of the dust cover body (1), and the size of the clamping groove (121) along the first direction gradually decreases. The dust cover body (1) has a cavity (13) extending along the axial direction, and the cavity (13) comprises a first cavity (131) and a second cavity (132) matched with the steering gear housing (3); 3. The diverter seal structure of claim 1, wherein, The second cavity (132) is provided with a sealing member (5), and the intersection of the first cavity (131) and the second cavity (132) forms a stepped surface (14), and the sealing member (5) is located between the stepped surface (14) and the steering gear housing (3) along the axial direction of the cavity (13), and the sealing member (5) is compressed under the axial extrusion of the steering gear housing (3). The sealing member (5) comprises a main sealing portion (51) and a limiting lug (52), and the dust cover body (1) is provided with a limiting hole (111) communicated with the second cavity (132) on a housing plug-in portion (11), the main sealing portion (51) is located in the second cavity (132), and the limiting lug (52) is located in the limiting hole (111).

4. The diverter seal structure of claim 3, wherein, The limiting lug (52) and the limiting hole (111) are both provided with two side walls arranged opposite to each other along the first direction, and the size of the limiting lug (52) is greater than or equal to the size of the limiting hole (111) along the first direction. The sealing member (5) further comprises an anti-falling lug (53) connected to one side of the limiting lug (52) away from the main sealing portion (51).

5. The diverter seal structure of claim 4, wherein, The size of the anti-falling lug (53) is greater than the size of the limiting lug (52) along the first direction, and the anti-falling lug (53) is located outside the housing plug-in portion (11). ​ 6. The diverter seal structure of claim 5, wherein, The shell plug part (11) is provided with a relief hole (113), the relief hole (113) is communicated with the limiting hole (111) through a guide hole (112); In the first direction, the size of the relief hole (113) is greater than the size of the anti-off lug (53), in the direction from the relief hole (113) to the guide hole (112), the size of the guide hole (112) gradually decreases, and the minimum size of the guide hole (112) is less than the size of the limiting hole (111).

7. The diverter seal structure of any one of claims 1 to 6, wherein, The clamping groove (121) is a through groove; In the radial direction of the diverter shell (3), the size of the clamping part (31) is greater than or equal to the size of the clamping groove (121).

8. The diverter seal structure of any one of claims 3 to 6, wherein, The diverter shell (3) comprises a matching section (32) matched with the second cavity (132), and the cross-sectional shape of the second cavity (132) and the matching section (32) is circular; The diameter of the matching section (32) is less than the diameter of the second cavity (132), and the difference is greater than or equal to 0.5mm and less than or equal to 1mm.

9. The diverter seal structure of any of claims 3 to 6, wherein, The side wall of the second cavity (132) is provided with a guide protrusion extending in the axial direction of the cavity (13); The sealing element (5) has a guide notch (511) matched with the guide protrusion; And / or, the diverter shell (3) is provided with a guide groove (321) matched with the guide protrusion.

10. A vehicle characterized by comprising: The application further provides a diverter sealing structure comprising the diverter sealing structure according to any one of claims 1 to 9.

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