Dust cover and steering device

Abstract

The utility model provides a dust cover and a steering device, the dust cover comprises a body part and a bearing, the body part comprises a first sleeve, the first sleeve is provided with a mounting hole, the inner wall of the mounting hole is provided with a mounting groove, the bearing is mounted in the mounting groove, and the inner wall of the first sleeve is provided with a flange. The flange is located on the inner wall of the first sleeve and located on the side, close to the bottom of the dustproof cover, of the bearing. The turned-over edge can be attached to the steering shaft, so that the protection and isolation functions are achieved, the situation that external impurities directly impact the part, matched with the bearing, of the steering shaft and the bearing is avoided, the possibility that dust and other external foreign matter enter the mounting groove and the bearing is reduced, and the bearing and the steering shaft can be protected. In addition, the turnup can protect lubricating oil in the mounting groove, the situation that the lubricating oil overflows from the mounting groove in the assembling process is reduced, and loss of the lubricating oil is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a dust cover and steering device. Background Technology

[0002] The steering system is a crucial component of a vehicle. To ensure the vehicle's airtightness, the steering system includes a dust cover to prevent external dust and other impurities from entering the vehicle's interior. However, current dust covers, when combined with the steering shaft, provide poor protection for the steering rod. External impurities can easily enter the connection point between the steering shaft and the dust cover, causing wear and abnormal noise on the steering shaft and affecting its normal operation. Utility Model Content

[0003] In view of this, this application provides a dust cover and a steering device to solve the problem of poor protection effect of dust covers in the prior art.

[0004] This application provides a dust cover, which includes a body and a bearing. The body includes a first sleeve with a mounting hole and an inner wall with a mounting groove. The bearing is mounted in the mounting groove. The inner wall of the first sleeve has a flange that extends toward the axis of the mounting hole.

[0005] In one possible implementation, the body portion includes a second sleeve and a lip, the second sleeve being fitted onto the first sleeve, the lip connecting the first sleeve and the second sleeve, and the lip being capable of elastic deformation.

[0006] In one possible implementation, the bearing includes an inner ring and an outer ring, the outer ring being fitted onto the inner ring, and a gap being formed between the outer ring and the inner wall of the mounting groove.

[0007] In one possible implementation, the outer ring has a groove on the side near the first sleeve, the groove being recessed in the direction close to the inner ring.

[0008] In one possible implementation, the outer ring has a plurality of grooves, which are spaced apart axially along the bearing or spaced apart circumferentially along the bearing.

[0009] In one possible implementation, the flange is arranged circumferentially along the mounting hole, and the flange is inclined toward the axis of the mounting hole.

[0010] In one possible implementation, the second sleeve has a mounting protrusion that protrudes along the direction of the second sleeve away from the first sleeve.

[0011] In one possible implementation, the dust cover includes a mounting base located on the side of the second sleeve away from the mounting hole, and the mounting base is connected to the mounting protrusion.

[0012] In one possible implementation, the mounting protrusion has a mounting protrusion and a first positioning hole, the mounting base has a second positioning hole and a third positioning hole, the mounting protrusion is capable of extending into the second positioning hole, and the first positioning hole and the third positioning hole at least partially overlap.

[0013] This application provides a steering device, which includes a dust cover and a steering rod. The dust cover is the dust cover described in any of the above embodiments. The steering rod is installed in the mounting hole, and the bearing is sleeved on the steering rod. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of one embodiment of the body section provided in this application;

[0016] Figure 2 A cross-sectional view of one embodiment of the dust cover provided in this application;

[0017] Figure 3 A schematic diagram of one embodiment of the bearing provided in this application;

[0018] Figure 4 A schematic diagram of one embodiment of the support provided in this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Body part;

[0021] 11-First sleeve;

[0022] 111 - Mounting hole;

[0023] 112 - Mounting slot;

[0024] 113 - Flipping the edge;

[0025] 12 - Second sleeve;

[0026] 121 - Install the male ring;

[0027] 122 - Mounting protrusion;

[0028] 123 - First positioning hole;

[0029] 13-Lips;

[0030] 2-Bearings;

[0031] 21-Inner Ring;

[0032] 22-Outer Ring;

[0033] 221-Groove;

[0034] 3-Mounting base;

[0035] 31 - Second positioning hole;

[0036] 32 - Third positioning hole;

[0037] 4- Rotating shaft. Detailed Implementation

[0038] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0040] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0042] like Figure 1 and Figure 2As shown, this application embodiment provides a dust cover for dust protection of an automotive steering system. The dust cover includes a body 1 and a bearing 2. The body 1 includes a first sleeve 11, which has a mounting hole 111. The inner wall of the mounting hole 111 has a mounting groove 112, and the bearing 2 is mounted in the mounting groove 112. The inner wall of the first sleeve 11 has a flange 113, which extends in a direction close to the axis of the mounting hole 111. The mounting hole 111 is used to mount a rotating shaft 4. When the rotating shaft 4 is mounted in the mounting hole 111, the axis of the mounting hole 111 can be considered to coincide with the axis of the rotating shaft 4.

[0043] The dust cover is used to achieve the isolation function. During vehicle operation, there are many impurities such as dust and mud on the road. The main body 1 can act as a barrier to isolate these impurities outside the steering device, reduce the possibility of impurities entering the steering device, and help extend the service life of the steering device.

[0044] The first sleeve 11 is used to mate with the rotating shaft 4. The first sleeve 11 has a mounting hole 111, and the inner wall of the mounting hole 111 has a mounting groove 112. The bearing 2 can be installed in the mounting groove 112, thereby connecting the bearing 2 with the first sleeve 11. The mounting groove 112 can also store lubricant, which can make the bearing 2 rotate smoothly and reduce the noise generated during operation. Specifically, the rotating shaft 4 can be installed by passing through the mounting hole 111, and the bearing 2 is sleeved on the rotating shaft 4, so that the rotating shaft 4 can rotate smoothly relative to the body part 1.

[0045] The dust cover includes a top and a bottom along the axial direction of the mounting hole 111. The top of the dust cover is usually close to the interior of the vehicle body and is not easily affected by external dust and other impurities. The bottom of the dust cover is usually close to the bottom of the vehicle body and is easily affected by external dust and other impurities. The flange 113 is located on the inner wall of the first sleeve 11 and on the side of the bearing 2 near the bottom of the dust cover. The flange 113 can fit snugly against the rotating shaft 4, thereby providing protection and isolation, preventing external impurities from directly impacting the mating part of the rotating shaft 4 and the bearing 2, and reducing the possibility of dust and other foreign objects entering the mounting groove 112 and the bearing 2, thus protecting the bearing 2 and the rotating shaft 4. In addition, the flange 113 can protect the lubricating oil inside the mounting groove 112, reducing the leakage of lubricating oil from the mounting groove 112 during assembly and reducing lubricating oil loss.

[0046] The body part 1 is made of an elastic material, such as silicone, rubber or plastic. The body part 1 can undergo elastic deformation to absorb and buffer the vibration generated between the components, thereby reducing the noise generated during operation.

[0047] like Figure 1As shown, in one possible embodiment, the body part 1 includes a second sleeve 12 and a lip 13. The second sleeve 12 is sleeved on the first sleeve 11, and the lip 13 connects the first sleeve 11 and the second sleeve 12. The lip 13 is capable of elastic deformation.

[0048] The first sleeve 11, the second sleeve 12, and the lip 13 can be integrally formed by injection molding. The first sleeve 11 and the second sleeve 12 are connected by the lip 13. Because the material of the body 1 is elastic, the lip 13 can deform, allowing the first sleeve 11 and the second sleeve 12 to move relative to each other. That is, the first sleeve 11 can move relative to the second sleeve 12 along the radial or axial direction of the mounting hole 111. When the rotating shaft 4 is installed in the mounting hole 111, the movement of the rotating shaft 4 may drive the first sleeve 11 to move. The first sleeve 11 relative to the second sleeve 12 can prevent the first sleeve 11 from excessively limiting the rotating shaft 4 and affecting the normal movement of the rotating shaft 4, which is beneficial to improving the stability of the rotating shaft 4 during movement and reducing noise.

[0049] like Figure 2 and Figure 3 As shown, in one possible embodiment, the bearing 2 includes an inner ring 21 and an outer ring 22, with the outer ring 22 fitted onto the inner ring 21, and a gap between the outer ring 22 and the inner wall of the mounting groove 112.

[0050] Bearing 2 can be a plastic bearing. Plastic bearings have the advantages of being lightweight, low-noise, and highly corrosion-resistant. Furthermore, the plastic material itself has a low coefficient of friction, maintaining good smoothness during rotation. Bearing 2 includes an inner ring 21 and an outer ring 22, which can rotate relative to each other. Rolling elements can be provided between the inner and outer rings 21 or not, depending on actual needs. The preset gap between the outer ring 22 and the mounting groove 112 can accommodate lubricating oil, achieving lubrication while preventing loss and evaporation, thus reducing friction and noise during rotation. The inner ring 21 is fitted onto the rotating shaft 4 with an interference fit, allowing them to rotate synchronously. A soft rubber layer can be provided on the side of the inner ring 21 closest to the rotating shaft 4. This elastic rubber layer provides cushioning and can accommodate dimensional differences between the rotating shaft 4 and the inner ring 21 during assembly, facilitating the assembly of the rotating shaft 4 and the bearing 2.

[0051] like Figure 3 As shown, in one possible implementation, the outer ring 22 has a groove 221 on the side near the first sleeve 11, and the groove 221 is recessed in the direction near the inner ring 21.

[0052] During assembly of bearing 2, bearing 2 may squeeze the lubricating oil in mounting groove 112 out of mounting groove 112, resulting in insufficient lubrication. The bearing 2 provided in this application embodiment has a groove 221 on the outer ring 22. The groove 221 is recessed radially towards the inner ring of bearing 2. The groove 221 is used to store lubricating oil. Even if the lubricating oil in mounting groove 112 is squeezed out during installation, the lubricating oil in groove 221 can still perform the lubrication function, so that bearing 2 rotates smoothly.

[0053] like Figure 3 As shown, in one possible embodiment, the outer ring 22 has a plurality of grooves 221, which are spaced apart along the axial direction of the bearing 2 or spaced apart along the circumferential direction of the bearing 2. The plurality of grooves 221 can store lubricating oil separately, which can increase the storage capacity of lubricating oil, and the lubricating oil in the plurality of grooves 221 can lubricate different positions respectively, which is beneficial to improving the rotational stability of the bearing 2.

[0054] In one possible implementation, the flange 113 is annular and arranged circumferentially along the mounting hole 111, and the flange 113 is inclined in a direction close to the axis of the mounting hole 111.

[0055] The flange 113 extends axially along the mounting hole 111 to form an annular structure. The flange 113 can abut against the rotating shaft 4 installed on the dust cover, thereby reducing the possibility of dust and other impurities entering the area where the rotating shaft 4 and the dust cover meet. That is, it reduces the possibility of dust and other impurities entering the mounting groove 112 and the mounting hole 111, and improves the sealing and stability of the dust cover.

[0056] like Figure 1 and Figure 2 As shown, in one possible embodiment, the second sleeve 12 has a mounting protrusion 121 that protrudes in a direction away from the first sleeve 11. The mounting protrusion 121 provides mounting points for the entire dust cover. The mounting protrusion 121 can be flat to facilitate the connection of the main body 1 with other components.

[0057] In one possible implementation, the dust cover includes a mounting base 3 located on the side of the second sleeve 12 away from the mounting hole 111, and the mounting base 3 is connected to the mounting protrusion 121.

[0058] The main body 1 is typically mounted on other components of the vehicle. The mounting base 3 can connect with the mounting convex ring 121, thereby further improving the sealing performance of the main body 1. The mounting base 3 can further prevent external impurities from entering the bearing 2 and the first sleeve 11, reducing the possibility of jamming when the rotating shaft 4 rotates and reducing the noise generated when the rotating shaft 4 rotates. The mounting base 3 is annular, and the rotating shaft 4 can pass through the mounting base 3.

[0059] like Figure 1 and Figure 4 As shown, in one possible embodiment, the mounting ring 121 has a mounting protrusion 122 and a first positioning hole 123, the mounting base 3 has a second positioning hole 31 and a third positioning hole 32, the mounting protrusion 122 can extend into the second positioning hole 31, and at least partially overlap the first positioning hole 123 and the third positioning hole 32.

[0060] By engaging the mounting protrusion 122 and the second positioning hole 31, the mounting ring 121 and the mounting base 3 are accurately positioned, and the mounting base 3 is initially fixed to the mounting ring 121. Multiple mounting protrusions 122 can be provided on the mounting ring 121, and multiple second positioning holes 31 can be provided on the mounting base 3 to improve positioning accuracy. After the mounting ring 121 and the mounting base 3 are accurately positioned, the first positioning hole 123 and the third positioning hole 32 will align with each other. A connector can be provided that passes through both the first positioning hole 123 and the third positioning hole 32 simultaneously to connect the mounting base 3 and the mounting ring 121. Furthermore, the main body 1 and the mounting base 3 can be installed in a preset position on the vehicle using the connector.

[0061] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this application. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A dust cover characterized by, The dust cover includes a body and a bearing. The body includes a first sleeve with a mounting hole and an inner wall with a mounting groove. The bearing is mounted in the mounting groove. The inner wall of the first sleeve has a flange that extends toward the axis of the mounting hole. The bearing includes an inner ring and an outer ring. The outer ring has a groove on the side near the first sleeve, and the groove is recessed in the direction close to the inner ring.

2. The dust cover of claim 1, wherein The main body includes a second sleeve and a lip. The second sleeve is fitted onto the first sleeve, and the lip connects the first sleeve and the second sleeve. The lip is capable of elastic deformation.

3. The dust cover of claim 1, wherein The outer ring is fitted onto the inner ring, and there is a gap between the outer ring and the inner wall of the mounting groove.

4. The dust cover of claim 3, wherein The outer ring has multiple grooves, which are spaced apart along the axial direction of the bearing or spaced apart along the circumferential direction of the bearing.

5. The dust cover of claim 3, wherein The flange is annular and is arranged circumferentially along the mounting hole.

6. The dust cap of claim 2, wherein, The second sleeve has a mounting protrusion that protrudes along the direction away from the first sleeve.

7. The dust cap of claim 6, wherein, The dust cover includes a mounting base located on the side of the second sleeve away from the mounting hole, and the mounting base is connected to the mounting protrusion.

8. The dust cap of claim 7, wherein, The mounting protrusion has a mounting protrusion and a first positioning hole, and the mounting base has a second positioning hole and a third positioning hole. The mounting protrusion can extend into the second positioning hole, and the first positioning hole and the third positioning hole at least partially overlap.

9. A steering device characterized by comprising: The steering device includes a dust cover and a steering rod, wherein the dust cover is the dust cover according to any one of claims 1 to 8, the steering rod is installed in the mounting hole, and the bearing is sleeved on the steering rod.

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