Micro-motion bearing sleeve structure

Abstract

The invention relates to the technical field of bearing covers, and discloses a micro-motion bearing sleeve structure which comprises an inner sleeve and an outer sleeve, and the top ends of the inner sleeve and the outer sleeve are connected into an integrated structure through a transition connecting part, so that the inner sleeve can perform micro-motion relative to the outer sleeve; the inner side of the inner sleeve is fixedly connected with a bearing outer ring, and the outer sleeve is connected with an external machine body to limit the position of the bearing sleeve; the inner sleeve and the outer sleeve are arranged into an integrated structure, and the top ends of the inner sleeve and the outer sleeve are connected through the transition connecting part and the sealing part, so that a space for the inner sleeve to slightly move is formed between the outer side of the inner sleeve and the inner side of the outer sleeve, and the inner sleeve can slightly move relative to the outer sleeve; due to the fact that the material of the bearing sleeve has certain elasticity, the bearing can slightly move on the inner side of the outer sleeve together with the inner sleeve through the inner sleeve, the steering wheel shaft sleeve cannot be abraded for a long time due to vibration of a vehicle in the vehicle running process, and the integrated bearing sleeve structure does not have the risk of splitting.

Description

Technical Field

[0001] The invention relates to the technical field of bearing covers, in particular to a micro-motion bearing sleeve structure. Background Art

[0002] Bearing micromotion refers to the extremely small relative movement between two contact surfaces. Bearing micromotion usually occurs under working conditions such as engine transmission, thermal cycle stress, fatigue load, electromagnetic vibration, etc. Bearing micromotion can cause friction and wear on the contact surface, causing parts to loosen, power loss, increased noise, etc. It can also cause the possibility of accelerated fatigue cracks, thereby reducing the fatigue life of parts.

[0003] The bearing sleeves of existing steering wheel shaft bearings are all separately assembled sleeves. Such sleeves have low stability and no micro-motion space. During long-term use, the bearings need to withstand the forces of all amplitudes of movement from the shaft, causing the steering wheel sleeves to be subject to long-term wear due to vehicle vibrations during driving, and there is a risk of separation. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a micro-motion bearing sleeve structure, in which a space for micro-motion of the inner sleeve is formed between the outer side of the inner sleeve and the inner side of the outer sleeve, and the bearing can be micro-moved on the inner side of the outer sleeve together with the inner sleeve, so that the steering wheel sleeve will not be subject to long-term wear due to vehicle vibration during driving, and the one-piece bearing sleeve structure does not have the risk of separation.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A micro-motion bearing sleeve structure comprises an inner sleeve and an outer sleeve, wherein the inner sleeve and the top end of the outer sleeve are connected to form an integral structure via a transition connection portion, so that the inner sleeve can perform micro-motion relative to the outer sleeve; the inner side of the inner sleeve is used for fixed connection with the outer ring of the bearing, and the outer sleeve is used for connection with an external body to limit the position of the bearing sleeve.

[0007] As a further implementation, the inner sleeve and the outer sleeve are coaxially arranged.

[0008] As a further implementation, the transition connection part is an annular structure, the outer side of the transition connection part is connected to the outer sleeve as a whole, and the inner side of the transition connection part is connected to the inner sleeve as a whole through a sealing part.

[0009] As a further implementation, the sealing portion is an arc-shaped protruding structure at one end away from the inner sleeve, and the inner diameter of the sealing portion is smaller than the inner diameter of the inner sleeve.

[0010] As a further implementation, an annular step is provided on the inner side of the inner sleeve, and the thickness of the inner sleeve upper structure divided by the annular step is greater than the thickness of the inner sleeve lower structure.

[0011] As a further implementation, the outer diameters of the inner sleeve at various positions are the same.

[0012] As a further implementation, the bottom end of the outer jacket is provided with an inner buckle.

[0013] As a further implementation, the height of the inner sleeve is greater than the height of the outer sleeve, and the bottom end of the inner sleeve protrudes beyond the bottom end of the outer sleeve.

[0014] As a further implementation, the inwardly-curled top surface and the annular step are at the same height.

[0015] As a further implementation, the inner sleeve, outer sleeve, transition connection portion and sealing portion are an integral structure stamped from a plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention sets the inner sleeve and the outer sleeve as an integrated structure. The inner sleeve is connected to the top of the outer sleeve through a transition connection part and a sealing part, so that a space for the inner sleeve to slightly move is formed between the outer side of the inner sleeve and the inner side of the outer sleeve. The inner sleeve can slightly move relative to the outer sleeve. When the bearing needs to bear the force of all amplitudes of movement from the shaft, since the material of the bearing sleeve itself has a certain elasticity, the bearing can be slightly moved on the inner side of the outer sleeve together with the inner sleeve through the inner sleeve, so that the steering wheel sleeve will not be subject to long-term wear due to the vibration of the vehicle during driving, and there is no risk of separation in the integrated bearing sleeve structure.

[0018] 2. The bearing sleeve of the present invention is obtained by stamping a plate, and a sealing portion is stamped and formed at the same time. The sealing portion can closely cooperate with the shaft portion protruding from the bearing to shield and protect the space between the inner ring and the outer ring of the bearing.

[0019] 3. The inner side surface of the inner sleeve of the present invention is provided with an annular step and a fixing portion. After the inner sleeve is matched with the outer ring of the bearing, the fixing portion is folded inward so that the fixing portion abuts against the outer ring of the bearing, and the bearing is firmly fixed in the inner sleeve.

[0020] 4. The bottom end of the jacket of the present invention is provided with an inner buckle, which can be used as a supporting rib to strengthen the strength of the jacket, so that the jacket can withstand greater pressure and the structure is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 is an isometric structural diagram of a micro-motion bearing sleeve structure in an embodiment of the present invention;

[0023] Figure 2 is a schematic cross-sectional structure diagram of a micro-motion bearing sleeve structure in an embodiment of the present invention;

[0024] Figure 3 1 is a schematic diagram of the main structure of the micro-motion bearing sleeve structure in an embodiment of the present invention.

[0025] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0026] Among them: 1. Inner sleeve, 2. Outer sleeve, 3. Transition connection part, 4. Sealing part, 11. Annular step, 12. Fixing part, 21. Inner buckle. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] Embodiment 1

[0029] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 3 As shown, a micro-motion bearing sleeve structure includes an inner sleeve 1, an outer sleeve 2, a transition connection portion 3 and a sealing portion, and the inner sleeve 1, the outer sleeve 2, the transition connection portion 3 and the sealing portion 4 are an integral structure stamped from a plate, and the inner and outer sleeves of the bearing sleeve are integrally formed, and the strength is extremely high. Even if it is subjected to external force for a long time, the sleeve will not fall apart. Moreover, compared with the assembled bearing sleeve, the bearing sleeve material is compact and the weight is lighter.

[0030] like Figure 1-Figure 3 As shown, the inner sleeve 1 and the outer sleeve 2 are coaxially arranged, the outer sleeve 2 is located outside the inner sleeve, and the inner sleeve 1 and the outer sleeve 2 are both annular structures, wherein the outer diameters of the inner sleeve 1 and the outer sleeve 2 are consistent at all places.

[0031] The top ends of the inner sleeve 1 and the outer sleeve 2 are connected as an integral structure through a transition connection part 3 and a sealing part 4. The transition connection part 3 is a circular ring structure. The outer side of the transition connection part 3 is connected as a whole with the outer sleeve 2, and the inner side is connected as a whole with the inner sleeve 1 through the sealing part 4, so that the entire bearing sleeve structure is an integral structure and there will be no problem of loose sleeves.

[0032] like Figure 2As shown, the plane where the transition connection part 3 is located is perpendicular to the axis of the inner sleeve 1 and the outer sleeve 2, and the sealing part 4 on the inner side of the transition connection part 3 is an arc-shaped protruding structure at the end away from the inner sleeve 1, and the inner diameter of the sealing part 4 is smaller than the inner diameter of the inner sleeve 1. Specifically, the sealing part 4 is bent from the inner side of the transition connection part 3 to the side away from the inner sleeve 1 and extends a set distance toward the center of the bearing sleeve, and then bends back to the top of the inner sleeve, so that the entire bearing sleeve structure is an integrated structure, and the height of the sealing part 4 is greater than the height of the inner sleeve 1 and the outer sleeve 2. The sealing part 4 can be closely matched with the shaft part protruding from the bearing to achieve shielding and protection of the space between the inner ring and the outer ring of the bearing.

[0033] In this embodiment, the inner sleeve 1 and the outer sleeve 2 are set as an integral structure, and the inner sleeve 1 is connected to the top of the outer sleeve 2 through a transition connection part 3 and a sealing part 4, so that a space for the inner sleeve to slightly move is formed between the outer side of the inner sleeve 1 and the inner side of the outer sleeve 2, and the inner sleeve 1 can slightly move relative to the outer sleeve 2. When the bearing needs to withstand the force of all amplitudes of movement from the shaft, since the material of the bearing sleeve itself has a certain elasticity, the bearing can be slightly moved on the inner side of the outer sleeve 2 together with the inner sleeve 1 through the inner sleeve 1, so that the steering wheel shaft sleeve will not be subjected to long-term wear due to the vibration of the vehicle during driving, and there is no risk of separation in the integrated bearing sleeve structure.

[0034] The inner side of the inner sleeve 1 of this embodiment is used to be fixedly connected to the outer ring of the bearing, and the outer sleeve 2 is used to be connected to the external body to limit the position of the bearing sleeve. The inner sleeve and the outer sleeve can move slightly relative to each other so that the inner sleeve 1 and the outer sleeve 2 will not be directly worn, thereby extending the service life of the bearing sleeve.

[0035] like Figure 2 As shown, the top end of the inner sleeve is vertically arranged with the folded back part of the sealing part for abutting against the inner ring of the bearing. In order to achieve a fixed fit between the inner sleeve and the bearing, an annular step 11 is provided near the middle position on the inner side of the inner sleeve, and the thickness of the upper structure of the inner sleeve divided by the annular step 11 is greater than the thickness of the lower structure of the inner sleeve.

[0036] The height of the inner sleeve 1 is greater than the height of the outer sleeve, and the bottom end of the inner sleeve 1 protrudes from the bottom end of the outer sleeve 2, and the protruding part is the lower structure of the inner sleeve.

[0037] When installing the bearing, the outer ring of the bearing is matched with the upper structure of the inner sleeve above the annular step 11, with one end of the outer ring abutting against the folded part of the sealing part and the other end located at the step; the lower structure of the inner sleeve is the fixing part 12.

[0038] In order to prevent the bearing from falling out, after the bearing is installed in the inner sleeve, the fixing part 12 is folded inward so that the plane where the fixing part 12 is located after the folding is parallel to the plane where the transition connection part is located. The fixing part 12 is used to abut the other end of the outer ring of the bearing. The sealing part 4 and the fixing part 12 abut both ends of the outer ring of the bearing to firmly fix the bearing in the inner sleeve.

[0039] It is understandable that the annular step needs to be machined after the bearing sleeve is stamped.

[0040] like Figure 2 As shown, the bottom end of the outer sleeve is provided with an inner buckle 21, and the top surface of the inner buckle 21 is at the same height as the annular step. When the fixing part is folded inward, the fixing part 12 and the inner buckle 21 are in the same plane, so that the structural height of one side of the bearing sleeve principle sealing part is the same and they are in the same plane structure.

[0041] The outer sleeve 2 can be used as a supporting rib to strengthen the strength of the outer sleeve by arranging the inner buckle, so that the outer sleeve can withstand greater pressure and the structure is more stable. The outer body has a circular groove, and the outer side of the outer sleeve of the bearing sleeve is clamped in the groove to realize the installation of the bearing sleeve.

[0042] The bearing sleeve part of this embodiment is formed by multiple stamping processes of a single sheet of material without any splicing, has high structural strength, and can utilize the elasticity of the sheet material itself to achieve a relative micro-motion effect of the inner and outer sleeves, thereby extending the service life of the bearing sleeve.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A micro-motion bearing sleeve structure, characterized in that: It includes an inner sleeve and an outer sleeve, the inner sleeve and the outer sleeve are connected to form an integral structure at the top end through a transition connection part, so that the inner sleeve can move slightly relative to the outer sleeve; the inner side of the inner sleeve is used for fixed connection with the outer ring of the bearing, and the outer sleeve is used for connecting with the external body to limit the position of the bearing sleeve.

2. A micro-motion bearing sleeve structure according to claim 1, characterized in that: The inner sleeve and the outer sleeve are coaxially arranged.

3. The micro-motion bearing sleeve structure according to claim 1, characterized in that: The transition connection part is an annular structure, the outer side of the transition connection part is connected to the outer sleeve as a whole, and the inner side of the transition connection part is connected to the inner sleeve as a whole through the sealing part.

4. A micro-motion bearing sleeve structure according to claim 3, characterized in that: The sealing part is an arc-shaped protruding structure at one end away from the inner sleeve, and the inner diameter of the sealing part is smaller than the inner diameter of the inner sleeve.

5. The micro-motion bearing sleeve structure according to claim 1, characterized in that: An annular step is provided on the inner side of the inner sleeve, and the thickness of the upper structure of the inner sleeve divided by the annular step is greater than the thickness of the lower structure of the inner sleeve.

6. A micro-motion bearing sleeve structure according to claim 5, characterized in that: The outer diameters of the inner sleeve at various positions are the same.

7. The micro-motion bearing sleeve structure according to claim 5, characterized in that: The bottom end of the outer coat is provided with an inner buckle.

8. The micro-motion bearing sleeve structure according to claim 7, characterized in that: The height of the inner sleeve is greater than the height of the outer sleeve, and the bottom end of the inner sleeve protrudes from the bottom end of the outer sleeve.

9. The micro-motion bearing sleeve structure according to claim 7, characterized in that: The inwardly-bent top surface and the annular step are at the same height.

10. The micro-motion bearing sleeve structure according to claim 3, characterized in that: The inner sleeve, the outer sleeve, the transition connection portion and the sealing portion are an integrated structure formed by stamping a plate.

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