CN115539641A - Dust cover and car of steering spindle - Google Patents

Abstract

The embodiment of the application provides a dust cover of a steering shaft and an automobile. In the dust cover of steering spindle that this application embodiment provided, be provided with two at least mounting grooves in the second sleeve, a bearing is installed to every mounting groove correspondence, and all bearing coaxial settings in the dust cover, thereby make the bearing housing establish behind the steering spindle, the bearing of two at least coaxial settings plays the effect that supports the steering spindle simultaneously, thereby can ensure the stability of supporting between dust cover and the steering spindle, the probability that the card went up takes place when can effectively reduce the steering spindle and rotates, can ensure user's use and experience. And, the telescopic both ends of second all are provided with seal structure, can prevent through seal structure that external impurity from entering into the second sleeve in, can prevent that external impurity from contacting the bearing to the normal work of the bearing that can ensure can further reduce the probability that the steering spindle takes place to block when rotating.

Description

Dust cover of steering shaft and automobile

Technical Field

The application relates to the technical field of vehicles, in particular to a dust cover of a steering shaft and an automobile.

Background

At present, a steering shaft of an automobile needs to penetrate through a front wall plate of the automobile, so that one end of the steering shaft is located in a cab, and the other end of the steering shaft is connected with a steering gear located in an engine compartment. In order to facilitate the steering shaft to penetrate through the front coaming, a mounting hole needs to be formed in the front coaming, a dust cover used for the steering shaft needs to be arranged in order to guarantee the sealing performance of the whole automobile, and the external noise, moisture, dust and the like of an engine compartment are prevented from directly entering the cockpit.

However, when the conventional dust cover is assembled with a steering shaft of an automobile, the dust cover and the steering shaft are easily unstable, and the steering shaft is locked due to rotation, thereby affecting the operation of a user.

Disclosure of Invention

This application provides a dust cover and car of steering spindle to the shortcoming of current mode for solve prior art and have the dust cover that is used for car steering spindle and the unstable technical problem of steering spindle support.

In a first aspect, an embodiment of the present application provides a dust cover for a steering shaft, including:

the dustproof cover comprises a dustproof cover body, a first sleeve and a second sleeve, wherein the first sleeve is sleeved outside at least part of the second sleeve and is connected with the second sleeve; at least two mounting grooves are formed in the second sleeve, and sealing structures are arranged at two ends of the second sleeve;

and each bearing is arranged in the corresponding mounting groove, all the bearings are coaxially arranged, and the bearings are used for being sleeved on the steering shaft.

Optionally, a first groove is arranged in the second sleeve, and the first groove is located in the middle of the second sleeve;

all the mounting grooves are distributed along the axial direction of the second sleeve, and the mounting grooves are distributed on two sides of the first groove.

Optionally, the inner wall of the first sleeve to the outer wall of the second sleeve are sized;

the dust cover body also comprises a connecting structure, and the connecting structure comprises a first end part, a connecting body and a second end part which are sequentially connected; the first end is connected with the first sleeve, the second end is connected with the second sleeve, and the extension size of the connecting body is larger than a set size.

Optionally, the extension direction of the connecting body is parallel to the axial direction of the first sleeve.

Optionally, the sealing structure comprises at least one circumferential groove provided in the inner wall of the second sleeve.

Optionally, the one end of first sleeve is provided with platform portion, and platform portion is provided with the hoop recess towards one side of second sleeve.

Optionally, the dust cover further comprises a support plate, the support plate is located on one side of the platform portion away from the second sleeve, and the support plate is fixedly connected with the platform portion.

Optionally, the support plate is provided with a first mounting hole and a positioning hole, and the platform part is provided with a second mounting hole matched with the first mounting hole and a positioning part matched with the positioning hole.

Optionally, the first mounting hole comprises a first rounded convex ring and a second rounded convex ring;

the first fillet bulge loop is located one side of the supporting plate far away from the platform part, and the second fillet bulge loop is located one side of the supporting plate towards the platform part.

In a second aspect, an embodiment of the present application provides an automobile, including: a steering shaft and a dust cover for a steering shaft provided in the first aspect.

The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:

in the dust cover of steering spindle that this application embodiment provided, be provided with two at least mounting grooves in the second sleeve, a bearing is installed to every mounting groove correspondence, and all bearing coaxial settings in the dust cover, thereby make the bearing housing establish behind the steering spindle, the bearing of two at least coaxial settings plays the effect that supports the steering spindle simultaneously, thereby can ensure the stability of supporting between dust cover and the steering spindle, the probability that the card went up takes place when can effectively reduce the steering spindle and rotates, can ensure user's use and experience.

And, the telescopic both ends of second all are provided with seal structure, can prevent through seal structure that external impurity from entering into the second sleeve in, can prevent that external impurity from contacting the bearing to the normal work of the bearing that can ensure can further reduce the probability that the steering spindle takes place to block when rotating.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a dust cover of a steering shaft according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the dust boot body of the dust boot of the steering shaft shown in FIG. 1;

FIG. 3 is a schematic view of the connection at A in the dust cap body of FIG. 2;

FIG. 4 is a schematic view illustrating an assembled relationship of a dust cover of a steering shaft with the steering shaft and a cowl panel according to an embodiment of the present invention;

FIG. 5 is a schematic view of a partial cross-sectional view in the BB direction in an assembled relationship of a dust cover of the steering shaft with the steering shaft and the cowl shown in FIG. 4;

fig. 6 is a schematic view of an assembled relationship between a dust cover body and a cowl in a dust cover of a steering shaft according to an embodiment of the present application.

Description of reference numerals:

10-a dust cover body;

11-a first sleeve;

12-a second sleeve; 121-mounting grooves; 122-a sealing structure; 123-a first groove;

13-a linking structure; 131-a connection body; 132-a first end; 133-a second end;

14-a platform section; 141-circumferential grooves; 142-a second mounting hole;

20-a bearing;

30-a support plate; 31-a first mounting hole; 32-positioning holes;

400-a steering shaft;

500-a dash panel;

600-screw rod;

700-nut.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

The inventor of the present application has studied and found that after a conventional dust cover is assembled with a steering shaft of an automobile, the problem that the dust cover and the steering shaft are unstable is easily caused, and the rotation of the steering shaft is blocked, thereby affecting the operation of a user.

Moreover, the existing dust cover has poor sealing performance, and noise, moisture, dust and the like are easy to directly enter the cab. In impurity enters into the dust cover such as dust, moisture, not only can influence the normal work of the bearing of dust cover, the problem that the card is gone into to the rotation of aggravation steering spindle can be born, still leads to the problem that the noise further aggravates in the cockpit because of interfering the friction appearance abnormal sound of junction of dust cover and steering spindle easily to influence user's experience.

The application provides a dust cover and car of steering spindle aims at solving prior art as above technical problem.

The following describes the technical solution of the present application and how to solve the above technical problems in detail by specific embodiments.

The embodiment of the application provides a dust cover of a steering shaft, which is shown in fig. 1 and is an exploded schematic view of the structure of the dust cover; as shown in fig. 2, a cross-sectional structure of the dust cap body of the dust cap is schematically shown. The dust cover includes: a dust boot body 10 and at least two bearings 20.

The dust cover body 10 comprises a first sleeve 11 and a second sleeve 12, wherein the first sleeve 11 is sleeved outside at least part of the second sleeve 12 and is connected with the second sleeve 12; at least two mounting grooves 121 are formed in the second sleeve 12, and sealing structures 122 are formed at both ends of the second sleeve 12.

In the embodiment of the present application, each bearing 20 is installed in the corresponding installation groove 121, and all the bearings 20 are coaxially disposed, and the bearings 20 are configured to be sleeved on the steering shaft 400 of the automobile.

In the dust cover of steering spindle that this application embodiment provided, be provided with two at least mounting grooves 121 in the second sleeve 12, every mounting groove 121 corresponds installs a bearing 20, and all bearings 20 in the dust cover are coaxial to be set up, thereby make bearing 20 cover establish behind steering spindle 400, the bearing 20 of two at least coaxial settings plays the effect of supporting steering spindle 400 simultaneously, thereby can ensure the stability of supporting between dust cover and the steering spindle 400, can effectively reduce the probability that the card pause takes place when steering spindle 400 rotates, can ensure user's use experience.

Moreover, both ends of the second sleeve 12 are provided with the sealing structures 122, and the sealing structures 122 can prevent external impurities from entering the second sleeve 12 and contacting the bearing 20, so that the normal operation of the bearing 20 can be ensured, and the possibility of jamming when the steering shaft 400 rotates can be further reduced.

In the embodiment of the present application, the dust cover body 10 is integrally formed by an injection molding process, that is, the first sleeve 11 and the second sleeve 12 of the dust cover body 10 are connected to form an integral structure. In the embodiment of the present application, the first sleeve 11 is sleeved outside at least a portion of the second sleeve 12, as shown in fig. 1 and 2, a portion of the second sleeve 12 is sleeved by the first sleeve 11, and another portion of the second sleeve 12 is not sleeved by the first sleeve 11. Through setting up first sleeve 11, first sleeve 11 can avoid external partial impurity and noise directly to enter into by the partial second sleeve 12 that the cover was established, moreover, another partial second sleeve 12 is not established by first sleeve 11 cover, can avoid first sleeve 11 to turn to axle 400 pivoted excessive interference to can effectively ensure to turn to axle 400 and rotate.

In the embodiment of the present application, at least two mounting grooves 121 are disposed in the second sleeve 12, each mounting groove 121 is correspondingly mounted with a bearing 20, all the bearings 20 are coaxially disposed, and the bearings 20 are configured to be sleeved on the steering shaft 400 of the vehicle. Two bearings 20 are no less than through the setting, and the coaxial setting of all bearings 20 to make bearing 20 cover establish behind steering spindle 400, the bearing 20 of two at least coaxial settings plays the effect that supports steering spindle 400 simultaneously, thereby can ensure the stability of support between dust cover and the steering spindle 400, can effectively reduce the probability that takes place the card when steering spindle 400 rotates and pause, can ensure user's use and experience. Optionally, as shown in fig. 1, two bearings 20 are provided in the dust cover, and correspondingly, two mounting slots 121 are provided in the second sleeve 12.

In the embodiment of the present application, as shown in fig. 2, the two ends of the second sleeve 12 are both provided with the sealing structures 122, and the sealing structures 122 can prevent the foreign matters from entering the second sleeve 12, and can prevent the foreign matters from contacting the bearing 20, so that the normal operation of the bearing 20 can be ensured, and the probability of blocking when the steering shaft 400 rotates can be further reduced.

In the embodiment of the application, through setting up seal structure 122, can reduce the volume that the noise in external world and engine compartment got into the cockpit to the silence of guarantee cockpit ensures user's driving environment.

In the embodiment of the present application, the bearing 20 is made of a plastic material, and the bearing 20 is located in the mounting groove 121, and since the thickness of the side wall at other positions in the second sleeve 12 is greater than that of the side wall at the position of the mounting groove 121, the mounting groove 121 can limit the movement of the bearing 20 in the axial direction of the second sleeve 12, so that the stability of the support between the dust cover and the steering shaft 400 can be ensured.

Meanwhile, the bearing 20 is in interference fit with the mounting groove 121, so that the mounting groove 121 can limit circumferential movement of the outer ring of the bearing 20, that is, the outer ring of the bearing 20 is prevented from rotating relative to the second sleeve 12, and the stability of support between the dust cover and the steering shaft 400 can be further ensured.

The inner ring of the bearing 20 is made of a plastic material with certain elasticity, and the diameter of the inner ring of the bearing 20 is slightly smaller than that of the steering shaft 400, so that the inner ring of the bearing 20 is in interference fit with the steering shaft 400, and the inner ring of the bearing 20 can be driven to rotate together when the steering shaft 400 rotates, thereby ensuring that the steering shaft 400 rotates.

In the embodiment of the present application, since the bearing 20 is made of a plastic material, the plastic has a low friction coefficient, and therefore, in the rotating process of the steering shaft 400, abnormal noise generated by friction between the bearing 20 and the steering shaft 400 can be reduced, so that noise is reduced, and the driving environment of the cockpit is ensured.

In one embodiment of the present application, a first groove 123 is provided in the second sleeve 12, the first groove 123 being located in a middle portion of the second sleeve 12; all the mounting grooves 121 are distributed along the axial direction of the second sleeve 121, and the mounting grooves 121 are distributed on both sides of the first groove 123.

In this application embodiment, the middle part of the second sleeve 12 is further provided with a first groove 123, the steering shaft 400 can be avoided by arranging the first groove 123, and after the steering shaft 400 is assembled with a dust cover, the contact between the inner wall of the middle part of the second sleeve 12 and the steering shaft 400 can be avoided, so that the interference of the second sleeve 12 on the movement of the steering shaft 400 can be reduced, and the rotation of the steering shaft 400 can be ensured.

In the embodiment of the present application, all the mounting grooves 121 are distributed along the axial direction of the second sleeve 12, and the mounting grooves 121 are distributed on both sides of the first groove 123. Alternatively, as shown in fig. 2, one side of the first groove 123 is provided with one mounting groove 121, and the other side of the first groove 123 is provided with another mounting groove 121.

Alternatively, as shown in fig. 2, the second sleeve 12 is provided with two mounting grooves 121, the two ends of the second sleeve 12 are provided with the mounting grooves 121, and the mounting grooves 121 are located between one sealing structure 122 and the other sealing structure 122. That is, in the central axis direction of the second sleeve 12, a sealing structure 122, a mounting groove 121, a first groove 123, another mounting groove 121 and another sealing structure 122 are sequentially disposed in the second sleeve 12.

In the embodiment of the present application, the mounting grooves 121 are distributed on two sides of the first groove 123, so that two mounting grooves 121 have a certain distance in the direction of the central axis of the second sleeve 12, so that the bearing 20 can be sleeved on the rear portion of the steering shaft 400, and a certain distance is provided between the supporting points of each bearing 20 and the steering shaft 400, thereby further enhancing the stability of the support between the bearing 20 and the steering shaft 400, further effectively reducing the probability of the jamming when the steering shaft 400 rotates, and ensuring the use experience of the user.

It should be noted that the center axis of the second sleeve 12 is indicated by a dotted line in fig. 2. In the embodiment of the present application, the middle of the second sleeve 12 indicates the portions of the second sleeve 12 located at both ends in the direction of the central axis of the second sleeve 12.

In one embodiment of the present application, the inner wall of the first sleeve 11 to the outer wall of the second sleeve 12 have a set size; the dust cover body 10 further comprises a connecting structure 13, wherein the connecting structure 13 comprises a first end portion 132, a connecting body 131 and a second end portion 133 which are connected in sequence; the first end 132 is connected to the first sleeve 11, the second end 133 is connected to the second sleeve 12, and the extension of the connecting body 131 is larger than a predetermined size.

In this application embodiment, the inner wall of first sleeve 11 has the size of setting to the outer wall of second sleeve 12, namely in radial direction, have certain distance between first sleeve 11 and the second sleeve 12, after steering spindle 400 and dust cover assembly, steering spindle 400 rotates and can drive second sleeve 12, through setting up the inner wall of first sleeve 11 and having the size of setting to the outer wall of second sleeve 12, can reduce the interference of first sleeve 11 to second sleeve 12, and then reduce the interference of first sleeve 11 to the motion of steering spindle 400, guarantee steering spindle 400 rotates.

In the embodiment of the present application, as shown in fig. 3, an enlarged schematic view of a structure at a position a of the dust cover body 10 shown in fig. 2 is shown. The connecting structure 13 includes a first end 132, a connecting body 131 and a second end 133 which are connected in sequence, the first end 132 is connected with the first sleeve 11, the second end 133 is connected with the second sleeve 12, and the first sleeve 11 is connected with the second sleeve 12 through the connecting structure 13.

Alternatively, as shown in fig. 2 and 3, the first end portion 132 is connected to an end portion of the first sleeve 11, and the second end portion 133 is connected to a middle portion of the second sleeve 12. The skilled person can set the specific connection position of the first end 132 and the first sleeve 11 and the specific connection position of the second end 133 and the second sleeve 12 according to actual requirements.

In the embodiment of the present application, the extension dimension of the connection body 131 is greater than the set dimension, that is, in the axial direction of the second sleeve 12, the connection structure 13 is a corrugated structure, so that the amplitude of the deflection between the first sleeve 11 and the second sleeve 12 can be increased, the interference of the first sleeve 11 on the second sleeve 12 can be further reduced, the interference of the first sleeve 11 on the movement of the steering shaft 400 can be further reduced, and the rotation of the steering shaft 400 can be ensured.

In the embodiment of the present application, the first sleeve 11, the second sleeve 12 and the connecting structure 13 of the dust cover body 10 are connected to form an integral structure, and are specifically manufactured by an injection molding process.

In one embodiment of the present application, the extending direction of the connection body 131 is parallel to the axial direction of the first sleeve 11. In the embodiment of the present application, the extending direction of the connecting body 131 is parallel to the axial direction of the first sleeve 11, so that the amplitude of the deflection between the first sleeve 11 and the second sleeve 12 can be ensured.

In the embodiment of the present application, the first sleeve 11 and the second sleeve 12 are coaxially disposed, that is, the central axis of the first sleeve 11 coincides with the central axis of the second sleeve 12, so that the extending direction of the connecting body 131 is parallel to the axial direction of the first sleeve 11, that is, the extending direction of the connecting body 131 is parallel to the axial direction of the second sleeve 12.

In the embodiment of the present application, the dust cover body 10 is made of an elastic material, that is, the first sleeve 11, the second sleeve 12 and the connection structure 13 are made of an elastic material, so that the first sleeve 11, the second sleeve 12 and the connection structure 13 can be ensured to move, and meanwhile, the first sleeve 11, the second sleeve 12 and the connection structure 13 can be restored to a state before movement deformation when an applied external force is eliminated. Boot body 10 is optionally made of a rubber material, and in the embodiment of the present application, boot body 10 is made of an EPDM (Ethylene Propylene Diene Monomer) material.

In one embodiment of the present application, the sealing structure 122 comprises at least one circumferential groove provided in the inner wall of the second sleeve 11.

In the embodiment of the present application, as shown in fig. 2, the sealing structure 122 is a circumferential groove, and the circumferential groove extends along the circumferential direction of the inner wall of the second sleeve 12 to form an annular groove. As shown in fig. 2, the sectional shape of the circumferential groove is V-shaped. Optionally, the circumferential groove includes a lip at the end of the second sleeve 12, and the sealing structure 122 can seal the inner space of the second sleeve 12 by the interference fit between the lip and the steering shaft 400, so that the external impurities can be prevented from entering the second sleeve 12, the external impurities can be prevented from contacting the bearing 20, the normal operation of the bearing 20 can be ensured, and the possibility of jamming when the steering shaft 400 rotates can be further reduced.

Moreover, by the sealing structure 122, the amount of noise outside and in the engine compartment entering the cab can be reduced, so that the silence of the cab is guaranteed, and the driving environment of a user is guaranteed.

When seal structure 122 includes a plurality of circumferential groove, through setting up the axial distribution of circumferential groove edge second sleeve 12, can further ensure seal structure 122 to the sealed effect of second sleeve 12 inner space to improve the sealed effect of dust cover.

In one embodiment of the present application, one end of the first sleeve 11 is provided with a platform 14, and a side of the platform 14 facing the second sleeve 12 is provided with a circumferential groove 141.

In this embodiment, as shown in fig. 2, one end of the first sleeve 11 is provided with a platform portion 14, and one side of the platform portion 14 facing the second sleeve 12 is provided with a circumferential groove 141, in this embodiment, one side of the platform portion 14 facing the second sleeve 12 is provided with three circumferential grooves 141, and the three circumferential grooves 141 are concentrically arranged. When the dust cover assembles behind the car, the closure plate direct contact laminating of platform portion 14 and car, hoop recess 141 can strengthen the leakproofness between platform portion 14 and the closure plate 500, thereby can strengthen the leakproofness of dust cover and car, prevent that external impurity from entering into in the first sleeve 11, further prevent that external impurity from entering into in the second sleeve 12, can prevent external impurity contact bearing 20, thereby the normal work of bearing 20 that can ensure, the probability that the card went down takes place when can further reducing steering spindle 400 rotates. Moreover, the amount of noise outside and in the engine compartment entering the cockpit can be reduced, so that the silence of the cockpit is guaranteed, and the driving environment of a user is guaranteed.

Optionally, the other side of the platform portion 14 may also be provided with an annular groove 141, and after the first sleeve 11 is assembled with the supporting plate 30, the annular groove 141 can enhance the sealing performance between the platform portion 14 and the supporting plate 30, further prevent external impurities from entering the first sleeve 11, prevent external impurities from entering the second sleeve 12, and prevent the external impurities from contacting the bearing 20, so that the normal operation of the bearing 20 can be ensured, and the probability of jamming when the steering shaft 400 rotates can be further reduced. Moreover, the amount of noise outside and in the engine compartment entering the cockpit can be reduced, so that the silence of the cockpit is guaranteed, and the driving environment of a user is guaranteed.

In one embodiment of the present application, the dust boot for the steering shaft further includes a support plate 30, the support plate 30 is located on a side of the platform portion 14 away from the second sleeve 12, and the support plate 30 is fixedly connected to the platform portion 14.

In the present embodiment, as shown in fig. 1, the dust cover further includes a support plate 30. As shown in fig. 4, the assembly relationship of the dust cover with the steering shaft and the dash panel is schematically shown. As shown in fig. 5 and 6, the support plate 30 is located on a side of the platform portion 14 away from the second sleeve 12, and the support plate 30 is fixedly connected to the platform portion 14.

In the embodiment of the present application, since dust cover main body 10 is made of a flexible material, in the process of assembling dust cover main body 10 and the vehicle, due to gravity or external force factors, the platform portion 14 is easily bent automatically, so that platform portion 14 and cowl 500 are difficult to fit with each other, and dust cover main body 10 and the vehicle are not convenient to assemble. In the embodiment of the application, through setting up backup pad 30 and 14 fixed connection of platform portion, backup pad 30 can supporting platform portion 14, consequently, in dust cover main part 10 and car assembling process, can ensure the laminating each other between platform portion 14 and preceding bounding wall 500, and the dust cover main part 10 and the car assembly of being convenient for improve the production efficiency of car.

Moreover, through setting up backup pad 30 supporting platform portion 14, will exert oneself through backup pad 30 and evenly transmit for platform portion 14, can ensure that the atress of platform portion 14 and preceding bounding wall 500 is even, can ensure closely laminating between platform portion 14 and the preceding bounding wall 500, can also avoid platform portion 14's the atress part not to take place to damage.

In the embodiment of the present application, the supporting plate 30 is made of a metal material, and the supporting plate 30 of the dust cover provided in the embodiment of the present application can be obtained at one time by a stamping forming process.

It should be noted that, in fig. 2, for the convenience of clearly showing the structure of the dust cover main body 10, the first sleeve 11, the connecting structure 13 and the platform portion 14 are marked in fig. 2 in both the upper and lower directions, the first sleeve 11 is a hollow cylindrical structure in an actual product, the connecting structure 13 is an annular structure matched with the first sleeve 11, and correspondingly, the platform portion 14 is also a structure disposed around the first sleeve 11, so that in the actual product, the dust cover main body 10 only has the first sleeve 11, the connecting structure 13 and the platform portion 14 as a whole.

In one embodiment of the present application, the support plate 30 is provided with a first mounting hole 31 and a positioning hole 32, and the platform part 14 is provided with a second mounting hole 142 matching the first mounting hole 31 and a positioning portion matching the positioning hole 32.

In the embodiment of the present application, the support plate 30 is provided with the first mounting hole 31 and the positioning hole 32, the platform portion 14 is provided with the second mounting hole 142 matching with the first mounting hole 31, and the platform portion 14 is further provided with the positioning portion matching with the positioning hole 32.

Through setting up first mounting hole 31 and second mounting hole 142, be convenient for through the cooperation of screw rod 600 and nut 700, realize the fixed connection of backup pad 30 and dust cover body 10, simultaneously, adopt screw rod 600 and nut 700 connected mode, be convenient for backup pad 30 and dust cover body 10 installation and dismantlement to the maintenance of the dust cover of being convenient for, perhaps, be convenient for the maintenance of the part that corresponds with the dust cover in the steering spindle 400.

In the embodiment of the present application, the location portion of platform portion 14 can be for the cylinder with locating hole 32 assorted, during the assembly, passes locating hole 32 through the cylinder, has realized backup pad 30 and dust cover body 10 location to and realize the preliminary fixed of backup pad 30 and dust cover body 10, the follow-up screw rod 600 and the installation of nut 700 of being convenient for.

In one embodiment of the present application, the first mounting hole 31 includes a first rounded protrusion 311 and a second rounded protrusion 312; the first fillet projection 311 is located on the side of the support plate 30 away from the platform 14, and the second fillet projection 312 is located on the side of the support plate 30 toward the platform 14.

In the embodiment of the present application, as shown in fig. 6, first fillet bulge loop 311 is located one side of backup pad 30 far away from platform portion 14, second fillet bulge loop 312 is located one side of backup pad 30 towards platform portion 14, thereby make two edge portions of first mounting hole 31 all not contact with platform portion 14, thereby can avoid in the assembling process, the platform portion 14 of rubber material receives the extrusion deformation to be damaged by the sharp edge of first mounting hole 31 annex, thereby can ensure platform portion 14 integrality, can improve backup pad 30 and dust cover body 10 assembly efficiency.

In the embodiment of the present application, the dust cover includes a dust cover body 10, at least two bearings 20 and a support plate 30, wherein the dust cover body 10 is an integrally formed structure, and the dust cover has a simple structure and is convenient to assemble. In the process of assembling the dust cover on the steering shaft 400 of the automobile, the assembly of the dust cover body 10, the at least two bearings 20 and the support plate 30 with the steering shaft 400 is facilitated, and the assembly efficiency can be improved.

Based on the same inventive concept, the embodiment of the application provides an automobile, which comprises: a steering shaft and a dust cover for a steering shaft provided in the above embodiments.

In the embodiment of the present application, please refer to the description of each embodiment above for the structure, principle, and technical effect of the dust cover in the automobile, which is not described herein again. Optionally, in the embodiment of the present application, the vehicle is an electric vehicle.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

in the dust cover of steering spindle that this application embodiment provided, be provided with two at least mounting grooves 121 in the second sleeve 12, every mounting groove 121 corresponds installs a bearing 20, and all bearings 20 in the dust cover are coaxial to be set up, thereby make bearing 20 cover establish behind steering spindle 400, the bearing 20 of two at least coaxial settings plays the effect of supporting steering spindle 400 simultaneously, thereby can ensure the stability of supporting between dust cover and the steering spindle 400, can effectively reduce the probability that the card pause takes place when steering spindle 400 rotates, can ensure user's use experience.

Moreover, both ends of the second sleeve 12 are provided with the sealing structures 122, and the sealing structures 122 can prevent external impurities from entering the second sleeve 12 and contacting the bearing 20, so that the normal operation of the bearing 20 can be ensured, and the possibility of jamming when the steering shaft 400 rotates can be further reduced.

In the embodiment of the application, through setting up seal structure 122, can also reduce the volume that the noise in external world and engine compartment got into the cockpit to the silence of guarantee cockpit ensures user's driving environment.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. A dust cover for a steering shaft, comprising:

the dustproof cover comprises a dustproof cover body, a first sleeve and a second sleeve, wherein the first sleeve is sleeved outside at least part of the second sleeve and is connected with the second sleeve; at least two mounting grooves are formed in the second sleeve, and sealing structures are arranged at two ends of the second sleeve;

the steering shaft comprises at least two bearings, wherein each bearing is arranged in the corresponding mounting groove, all the bearings are coaxially arranged, and the bearings are used for being sleeved on the steering shaft.

2. A dust cover for a steering shaft according to claim 1, wherein a first groove is provided in the second sleeve, the first groove being located at a middle portion of the second sleeve;

all the mounting grooves are along the telescopic axial of second distributes, just the both sides of first recess are equallyd divide cloth have the mounting groove.

3. The dust cover for a steering shaft according to claim 1, wherein an inner wall of the first sleeve to an outer wall of the second sleeve have a set size;

the dust cover body further comprises a connecting structure, and the connecting structure comprises a first end part, a connecting body and a second end part which are sequentially connected; the first end portion is connected with the first sleeve, the second end portion is connected with the second sleeve, and the extension size of the connecting body is larger than the set size.

4. A dust cover for a steering shaft according to claim 3, wherein an extending direction of the connecting body is parallel to an axial direction of the first sleeve.

5. A dust cover for a steering shaft according to claim 1, wherein said seal structure includes at least one circumferential groove provided in an inner wall of said second sleeve.

6. The dust cover for a steering shaft according to claim 1, wherein one end of the first sleeve is provided with a terrace portion, and a side of the terrace portion facing the second sleeve is provided with a circumferential groove.

7. The dust cover of the steering shaft according to claim 6, further comprising a support plate located on a side of the platform portion remote from the second sleeve, the support plate being fixedly connected to the platform portion.

8. The dust cover of a steering shaft according to claim 7, wherein the support plate is provided with a first mounting hole and a positioning hole, and the platform portion is provided with a second mounting hole that matches the first mounting hole and a positioning portion that matches the positioning hole.

9. The dust cover of a steering shaft according to claim 8, wherein the first mounting hole includes a first rounded bead and a second rounded bead;

the first fillet bulge loop is located the backup pad is kept away from one side of platform portion, second fillet bulge loop is located the backup pad orientation one side of platform portion.

10. An automobile, comprising: a steering shaft and a dust cover for a steering shaft according to any one of claims 1 to 9.

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