A dust cover for a deep groove ball bearing and a deep groove ball bearing

Abstract

This utility model discloses a dust cover for a deep groove ball bearing and a deep groove ball bearing, relating to the technical field of deep groove ball bearings, including a dust cover body; one end of the dust cover body in the radial direction is connected to an outer end bent section that abuts against the outer ring of the bearing, and one end of the dust cover body in the radial direction is connected to an inner end bent section that abuts against the inner ring of the bearing; the dust cover body includes a first connecting section, a second connecting section, and a third connecting section connected in sequence; the first connecting section is used to connect to the outer end bent section, and the third connecting section is used to connect to the inner end bent section; the second connecting section is inclinedly connected between the first connecting section and the third connecting section, such that the height of the first connecting section in the axial direction of the dust cover body is lower than the height of the third connecting section, thereby forming an arc-shaped guide surface for wrapping the outer circumference of the outer ring of the bearing.

Description

Technical Field

[0001] This utility model belongs to the field of deep groove ball bearing technology, specifically relating to a dust cover for a deep groove ball bearing and a deep groove ball bearing. Background Technology

[0002] Deep groove ball bearings are the most common type of rolling bearing, widely used in various mechanical equipment and precision instruments due to their simple structure, convenient use and maintenance, and wide range of applications. Deep groove ball bearings primarily bear radial loads, but can also withstand axial loads. A deep groove ball bearing consists of an outer ring, an inner ring, a cage, and balls. To prevent contamination of the bearing interior by oil, dust, and other contaminants, dust covers are attached to both sides of the deep groove ball bearing.

[0003] However, traditional bearing dust covers typically have a flat structure, with a radial gap between the end of the dust cover and the bearing's circumference. This results in a loose contact between the dust cover and the bearing, which can only block larger particles such as debris, but cannot completely prevent the intrusion of fine dust or liquids. Once acidic or alkaline media enter the bearing, it can easily cause grease deterioration or corrosion of the steel balls and raceways. Therefore, it is necessary to enhance the tightness between the dust cover and the bearing's inner and outer rings to prevent internal contamination of the bearing. Utility Model Content

[0004] This utility model provides a dust cover for a deep groove ball bearing and a deep groove ball bearing to solve the problem of gaps between the dust cover and the bearing, which allows fine dust or liquid to enter.

[0005] The technical solution adopted in this utility model is as follows:

[0006] This application relates to a dust cover for a deep groove ball bearing, comprising a dust cover body; one end of the dust cover body in the radial direction is connected to an outer end bent section that abuts against the outer ring of the bearing, and one end of the dust cover body in the radial direction is connected to an inner end bent section that abuts against the inner ring of the bearing;

[0007] The dust cover body includes a first connecting section, a second connecting section, and a third connecting section connected in sequence; the first connecting section is used to connect with the outer end bending section, and the third connecting section is used to connect with the inner end bending section; the second connecting section is inclinedly connected between the first connecting section and the third connecting section, so that the height of the first connecting section along the axial direction of the dust cover body is lower than the height of the third connecting section, thereby making the first connecting section form an arc-shaped guide surface for wrapping the outer circumference of the outer ring of the bearing.

[0008] The outer end bend is angled toward the outer ring of the bearing.

[0009] The outer bending section is set at an obtuse angle to the main body of the dust cover; the included angle between the outer bending section and the main body of the dust cover is in the range of 100°-150°.

[0010] The inner end bending section is set perpendicular to the third connecting section along the axial direction.

[0011] The outer bending section is set in parallel with the inner bending section.

[0012] The projection lengths of the outer bending section and the inner bending section in the axial direction of the dust cover body are equal; or, the projection length of the outer bending section in the axial direction of the dust cover body is greater than the projection length of the inner bending section in the axial direction of the dust cover body; or, the projection length of the outer bending section in the axial direction of the dust cover body is less than the projection length of the inner bending section in the axial direction of the dust cover body.

[0013] This application also relates to a deep groove ball bearing, including an inner ring, an outer ring, a cage, balls, and a dust cover for the deep groove ball bearing as described above;

[0014] The inner ring of the bearing is fitted inside the outer ring of the bearing. A cage connects the inner and outer rings, and balls are connected in the cage pockets. Two deep groove ball bearing dust covers are also connected between the inner and outer rings, respectively located above and below the cage. The outer bent section of the deep groove ball bearing dust cover abuts against the outer ring of the bearing, and the inner bent section of the deep groove ball bearing dust cover abuts against the inner ring of the bearing.

[0015] The outer ring of the bearing has a first stepped groove and a second stepped groove. The first stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing above the cage, and the second stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing below the cage.

[0016] The inner ring of the bearing has a third stepped groove and a fourth stepped groove. The third stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing above the cage, and the fourth stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing below the cage.

[0017] The dust cover for the deep groove ball bearing above the cage is symmetrically positioned with the dust cover for the deep groove ball bearing below the cage.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0019] 1. A dust cover for a deep groove ball bearing, comprising a dust cover body; one end of the dust cover body in the radial direction is connected to an outer end bent section that abuts against the outer ring of the bearing, and one end of the dust cover body in the radial direction is connected to an inner end bent section that abuts against the inner ring of the bearing; the dust cover body includes a first connecting section, a second connecting section, and a third connecting section connected in sequence; the first connecting section is used to connect to the outer end bent section, and the third connecting section is used to connect to the inner end bent section; the second connecting section is inclinedly connected between the first connecting section and the third connecting section, such that the height of the first connecting section in the axial direction of the dust cover body is lower than the height of the third connecting section, thereby forming an arc-shaped guide surface for wrapping the outer circumference of the outer ring of the bearing.

[0020] The dust cover has a specific bent section at the outer end that connects to the outer ring of the bearing. This not only increases the connection area between the dust cover and the outer ring but also creates a shape-locking connection, further enhancing the tightness of the connection between the dust cover and the bearing's outer ring. This improves the bearing's load-bearing capacity and its ability to prevent external dust intrusion. It also enhances the axial force of the deep groove ball bearing, preventing vibration or noise caused by loosening between the dust cover and the bearing's inner and outer rings during use. Furthermore, it prevents the intrusion of fine dust or liquids and avoids the entry of acidic or alkaline media into the bearing, effectively preventing grease deterioration or corrosion of the steel balls and raceways. This strengthens the tightness between the dust cover and the bearing's inner and outer rings.

[0021] 2. In a preferred embodiment of this utility model, the inner end bending section is arranged perpendicular to the third connecting section along the axial direction.

[0022] The inner bending section has a straight section structure and can be perpendicular to the third connecting section. With this configuration, the outer circumferential surface of the bearing inner ring does not have a conical groove, but instead has a third stepped groove with a circular structure. In use, the outer circumferential surface of the inner bending section abuts against the outer circumferential surface of the bearing inner ring, and the annular bottom surface of the inner bending section abuts against the third stepped surface formed by the third stepped groove of the bearing inner ring. This abuts against the inner bending section and the bearing inner ring, further forming the connection between the dust cover and the bearing. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a dust cover for a deep groove ball bearing according to one embodiment of this application;

[0025] Figure 2 This is a cross-sectional schematic diagram of a dust cover for a deep groove ball bearing according to one embodiment of this application;

[0026] Figure 3 This is a schematic cross-sectional view of a deep groove ball bearing without a cage and balls, according to one embodiment of this application.

[0027] In the picture,

[0028] 1. Dust cover; 2. Dust cover body; 21. First connecting section; 22. Second connecting section; 23. Third connecting section; 3. Outer end bending section; 4. Inner end bending section; 5. Bearing inner ring; 6. Bearing outer ring; 7. First stepped groove; 8. Second stepped groove; 9. Third stepped groove; 10. Fourth stepped groove. Detailed Implementation

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0030] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0034] Example 1

[0035] This utility model relates to a dust cover 1 for a deep groove ball bearing, such as Figure 1-2 As shown, the dust cover body 2 includes an outer end bent section 3 connected to the outer ring 6 of the bearing at one end in the radial direction, and an inner end bent section 4 connected to the inner ring 5 of the bearing at the other end in the radial direction. The dust cover body 2 includes a first connecting section 21, a second connecting section 22, and a third connecting section 23 connected in sequence. The first connecting section 21 is used to connect with the outer end bent section 3, and the third connecting section 23 is used to connect with the inner end bent section 4. The second connecting section 22 is inclinedly connected between the first connecting section 21 and the third connecting section 23, so that the height of the first connecting section 21 in the axial direction of the dust cover body 2 is lower than the height of the third connecting section 23, thereby forming an arc-shaped guide surface for wrapping the outer circumference of the outer ring 6 of the bearing.

[0036] In existing bearing dust covers 1, flat end covers are usually used. The connection between such flat end covers and the bearing inner ring 5 or bearing outer ring 6 is not tight enough, and they are prone to separation under external stress. This can easily lead to vibration and noise during use, and over time, it can cause quality problems in the bearing and make it unusable. Therefore, ensuring the connection stability between the bearing inner ring 5 and bearing outer ring 6 is crucial. In this application, the bearing dust cover 1 is reshaped, becoming a bent end cover with a certain bending angle instead of a flat end cover. When connected to the bearing outer ring 6 or the bearing inner ring 5, the dust cover 1 has a specific inner end bend 4 that connects to the bearing inner ring 5. This not only increases the connection area with the bearing inner ring 5 but also provides a shape lock, allowing the dust cover 1 and the bearing inner ring 5 to be locked together, thereby further enhancing the connection stability between the bearing inner ring 5 and the dust cover 1. Similarly, the dust cover 1 has a specific outer end bend 3 that connects to the bearing outer ring 6. This not only increases the connection area with the bearing outer ring 6 but also provides a shape lock, allowing the dust cover 1 and the bearing outer ring 6 to be locked together, thereby further enhancing the tight connection performance between the bearing outer ring 6 and the dust cover 1, and thus further improving the overall connection between the dust cover 1 and the bearing inner and outer rings. The tight connection enhances the bearing's load-bearing capacity and prevents external dust intrusion. It also further improves the axial force of the deep groove ball bearing, preventing vibration or noise caused by loosening between the dust cover 1 and the bearing inner ring 5 and outer ring 6 during use. It prevents the intrusion of fine dust or liquids and avoids the entry of acidic or alkaline media into the bearing, thus effectively preventing grease deterioration or corrosion of the steel balls and raceways. This strengthens the tightness between the dust cover 1 and the bearing inner ring 5 and outer ring 6. The outer bent section 3 of the dust cover 1 has a coverage area extending along the circumference of the bearing outer ring 6, and the inner bent section 4 of the dust cover 1 has a coverage area extending along the circumference of the bearing inner ring 5, increasing the coverage path and preventing radial gaps between the outer circumference of the dust cover 1 and the bearing inner ring 5 and outer ring 6. This prevents internal contamination of the bearing, improves service life, and enhances the user experience.

[0037] like Figure 1 As shown, the dust cover 1 is a circular structural component. The dust cover 1 has a bent structure in the radial direction. One end of the dust cover body 2 in the radial direction is connected to an outer bent section 3 that abuts against the outer ring 6 of the bearing. One end of the dust cover body 2 in the radial direction is connected to an inner bent section 4 that abuts against the inner ring 5 of the bearing. The dust cover body 2 includes a first connecting section 21, a second connecting section 22 and a third connecting section 23 connected in sequence.

[0038] In use, the dust cover body 2 is integrated with the inner bending section 4 and the outer bending section 3, which facilitates processing, manufacturing and installation; the first connecting section 21 of the dust cover body 2 is used to connect with the outer bending section 3 to form an integrated structure, and the third connecting section 23 is used to connect with the inner bending section 4 to form an integrated structure, which facilitates processing, manufacturing and installation. The second connecting section 22 is inclinedly connected between the first connecting section 21 and the third connecting section 23, such that the height of the first connecting section 21 along the axial direction of the dust cover body 2 is lower than the height of the third connecting section 23. This allows the first connecting section 21 to form an arc-shaped guide surface for wrapping part of the outer periphery of the bearing outer ring 6. The bearing outer ring 6 has a first stepped groove 7, which is located on the inner side of the bearing outer ring 6 near the top. The first stepped groove 7 gives the bearing outer ring 6 a stepped structure, i.e., a first stepped surface. Part of the bottom surface of the first connecting section 21 can abut against the top of the first stepped surface, thus achieving an arc-shaped guide surface on the bottom surface of the first connecting section 21 that abuts against the first stepped surface of the bearing outer ring 6. The outer peripheral surface of the outer end bent section 3 can abut against the top inner peripheral surface of the bearing outer ring 6, thereby ensuring a tight connection between the dust cover 1 and the bearing outer ring 6. Furthermore, the inner ring 5 of the bearing has a third stepped groove 9, the height of which is higher than the height of the first stepped groove 7 on the outer ring 6. Therefore, the height of the first connecting section 21 is lower than the height of the third connecting section 23. The third stepped groove 9 creates a third stepped structure on the inner ring 5, meaning the inner ring 5 has a third stepped surface. This allows the inner circumferential surface of the third connecting section 23 to abut against the inner circumferential surface of the inner ring 5, and the bottom surface of the third connecting section 23 to abut against the third stepped surface. This achieves the connection between the dust cover 1 and the inner ring 5 and outer ring 6 of the bearing. The two dust covers 1 on the upper and lower sides of the deep groove ball bearing, the inner ring 5, and the outer ring 6 form a sealed receiving space, thereby sealing the cage and balls and preventing dust from entering the bearing.

[0039] In a preferred embodiment, the outer end bend 3 is inclined toward the outer ring 6 of the bearing.

[0040] like Figure 1-2As shown, the top of the outer bending section 3 slopes outward, and the bottom of the outer bending section 3 slopes inward, so that the outer bending section 3 is inclined towards the outer ring 6 of the bearing. The outer bending section 3 can abut against the top inner circumferential surface of the outer ring 6. Specifically, a first stepped groove 7 is provided on the inner side of the outer ring 6, so that a first protrusion is provided on the inner side of the outer ring 6 near the top, which can protrude from the inner circumference of the outer ring 6. A first stepped surface is formed on the first protrusion. When the outer bending section 3... When the outer peripheral surface of the outer end bend 3 abuts against the inner peripheral surface of the bearing outer ring 6, part of the bottom surface of the first connecting section 21 of the dust cover body 2 connected to the outer end bend 3 can abut against the first stepped surface. The part of the bottom surface of the first connecting section 21 that can abut against the first stepped surface of the bearing outer ring 6 is called the arc-shaped guide surface. Through the cooperation between the arc-shaped guide surface and the first stepped surface, and the cooperation between the outer peripheral surface of the outer end bend 3 and the inner peripheral surface of the bearing outer ring 6, the dust cover 1 and the bearing outer ring 6 are tightly connected.

[0041] In a preferred embodiment, the outer bending section 3 and the dust cover body 2 are set at an obtuse angle; the included angle between the outer bending section 3 and the dust cover body 2 is in the range of 100°-150°.

[0042] The outer bending section 3 and the plane of the first connecting section 21 of the dust cover body 2 form an obtuse angle. In order to achieve a reasonable and tight connection, preferably, the included angle between the outer bending section 3 and the first connecting section 21 is set to 100°-150°. The obtuse angle between the outer bending section 3 and the first connecting section 21 is also conducive to production and processing, and is also conducive to installation during use. The dust cover 1 can be directly snapped between the inner ring 5 and the outer ring 6 of the bearing, and the outer bending section 3 can be correspondingly connected to the first stepped groove 7 of the outer ring 6 of the bearing.

[0043] The structure of the inner end bending section 4 is not limited to this application and can be implemented in various ways:

[0044] Implementation method 1: The inner end bending section 4 is set perpendicular to the third connecting section 23 along the axial direction.

[0045] In the preferred embodiment of this application, the inner end bending segment 4 is a straight segment structure, and the inner end bending segment 4 can be perpendicularly distributed with the third connecting segment 23. With this configuration, the outer circumferential surface of the bearing inner ring 5 does not have a conical groove, but instead has a third stepped groove 9 with a circular structure. In use, the outer circumferential surface of the inner end bending segment 4 abuts against the outer circumferential surface of the bearing inner ring 5, and the annular bottom surface of the inner end bending segment 4 abuts against the third stepped surface formed by the third stepped groove 9 of the bearing inner ring 5, thereby enabling the inner end bending segment 4 to abut against the bearing inner ring 5, further forming the connection between the dust cover 1 and the bearing.

[0046] Implementation Method 2: The inner end bending section 4 is inclined toward the inner ring 5 of the bearing, and the inner end bending section 4 and the dust cover body 2 are set at an obtuse angle; the included angle between the inner end bending section 4 and the dust cover body 2 is in the range of 100°-150°.

[0047] Alternatively, the inner bend segment 4 can be designed as a non-linear structure. When the inner bend segment 4 is designed as a non-linear structure, it can be designed to be inclined towards the inner ring 5 of the bearing. The top of the inner bend segment 4 is connected to the third connecting segment 23, and the bottom of the inner bend segment 4 is inclined towards the inner ring 5 of the bearing, thus making the inner bend segment 4 inclined towards the inner ring 5 of the bearing. An obtuse angle is formed between the inner bend segment 4 and the third connecting segment 23. For ease of processing and installation, the included angle between the inner bend segment 4 and the third connecting segment 23 is designed to be 100°-150°. When the inner bend segment 4 is designed to be inclined towards the inner ring 5 of the bearing, the outer circumferential surface of the inner ring 5 that mates with the inner bend segment 4 needs to be designed as a conical structure, so that the outer circumferential surface of the inner ring 5 and the inner circumferential surface of the inner bend segment 4 abut against each other.

[0048] Furthermore, the outer bending section 3 and the inner bending section 4 are arranged in parallel. Since the outer bending section 3 is inclined toward the outer ring 6 of the bearing and the inner bending section 4 is inclined toward the inner ring 5 of the bearing, in order to facilitate processing and installation, the outer bending section 3 and the inner bending section 4 can be arranged in parallel, so that the working area of ​​the outer bending section 3 connected with the outer ring 6 of the bearing is matched with the working area of ​​the inner bending section 4 connected with the inner ring of the peripheral layer, thereby enhancing the tight connection between the dust cover 1 and the inner ring 5 and the outer ring 6 of the bearing.

[0049] In one preferred embodiment, the projected lengths of the outer bending segment 3 and the inner bending segment 4 in the axial direction of the dust cover body 2 are equal; or, the projected length of the outer bending segment 3 in the axial direction of the dust cover body 2 is greater than the projected length of the inner bending segment 4 in the axial direction of the dust cover body 2; or, the projected length of the outer bending segment 3 in the axial direction of the dust cover body 2 is less than the projected length of the inner bending segment 4 in the axial direction of the dust cover body 2.

[0050] like Figure 2 As shown, the outer end bending section 3 is projected in the radial direction, so that the outer end bending section 3 can form a certain projected length in the axial direction of the dust cover body 2. Similarly, the inner end bending section 4 is projected in the radial direction, so that the inner end bending section 4 can form a certain projected length in the axial direction of the dust cover body 2. By comparing the projected lengths of the two, the length dimensions of the outer end bending section 3 and the inner end bending section 4 can be indirectly reflected, and further reflected, the contact area between the outer end bending section 3 and the outer ring 6 of the bearing and the contact area between the inner end bending section 4 and the inner ring 5 of the bearing.

[0051] Therefore, in order to increase the contact area between the dust cover 1 and the outer ring 6 of the bearing, the connection strength between the dust cover 1 and the outer ring 6 of the bearing is increased by making the length of the projection of the outer end bending section 3 in the axial direction of the dust cover body 2 greater than the length of the projection of the inner end bending section 4 in the axial direction of the dust cover body 2. Similarly, in order to increase the contact area between the dust cover 1 and the inner ring 5 of the bearing, the connection strength between the dust cover 1 and the inner ring 5 of the bearing is increased by making the length of the projection of the outer end bending section 3 in the axial direction of the dust cover body 2 less than the length of the projection of the inner end bending section 4 in the axial direction of the dust cover body 2. In order to achieve a more uniform contact force between the dust cover 1 and the inner ring 5 of the bearing and the outer ring 6 of the bearing, the lengths of the projections of the outer end bending section 3 and the inner end bending section 4 in the axial direction of the dust cover body 2 are equal.

[0052] In order to ensure that the outer end bending section 3 can be tightly connected to the outer ring 6 of the bearing, and that the outer end bending section 3 can be engaged within the outer ring 6 of the bearing, the shapes of the first stepped groove 7 and the second stepped groove 8 are adapted to the shape of the outer end bending section 3; similarly, the shapes of the third stepped groove 9 and the fourth stepped groove 10 are adapted to the shape of the inner end bending section 4.

[0053] Example 2

[0054] This application also relates to a deep groove ball bearing, such as Figure 3 As shown, the bearing includes an inner ring 5, an outer ring 6, a cage, balls, and a deep groove ball bearing dust cover 1 as described above. The inner ring 5 is fitted inside the outer ring 6. A cage and two deep groove ball bearing dust covers 1 are connected between the inner ring 5 and the outer ring 6. Balls are connected to the pockets of the cage. A deep groove ball bearing dust cover 1 is provided above and below the cage, respectively. The outer bent section 3 of the deep groove ball bearing dust cover 1 abuts against the outer ring 6, and the inner bent section of the deep groove ball bearing dust cover 1 abuts against the inner ring 5.

[0055] In a preferred embodiment, the deep groove ball bearing dust cover 1 above the cage and the deep groove ball bearing dust cover 1 below the cage are symmetrically arranged. For example... Figure 3 As shown, the inner ring 5 of the bearing is located inside the outer ring 6 of the bearing. A deep groove ball bearing dust cover 1 is connected to the upper side between the inner ring 5 and the outer ring 6 of the bearing. Another deep groove ball bearing dust cover 1 is connected to the lower side between the inner ring 5 and the outer ring 6 of the bearing. The two deep groove ball bearing dust covers 1 have the same structure and are symmetrically arranged.

[0056] In a preferred embodiment, the outer ring 6 of the bearing has a first stepped groove 7 and a second stepped groove 8. The first stepped groove 7 is used to abut against the outer bent section 3 of the deep groove ball bearing dust cover above the cage, and the second stepped groove 8 is used to abut against the outer bent section 3 of the deep groove ball bearing dust cover below the cage.

[0057] A first stepped groove 7 is provided on the inner side of the outer ring 6 near the top, so that a first stepped surface is formed on the top of the outer ring 6. The inner circumferential surface of the outer end bent section 3 of the upper deep groove ball bearing dust cover 1 can abut against and connect to the inner circumferential surface of the outer ring 6, and part of the bottom surface of the outer end bent section 3 of the upper deep groove ball bearing dust cover 1 can abut against and connect to the first stepped surface of the outer ring 6.

[0058] A second stepped groove 8 is provided on the inner side of the outer ring 6 near the bottom. The second stepped groove 8 forms a second stepped surface on the bottom of the outer ring 6. The inner circumferential surface of the outer end bent section 3 of the lower deep groove ball bearing dust cover 1 can abut against the inner circumferential surface of the outer ring 6, and part of the bottom surface of the outer end bent section 3 of the lower deep groove ball bearing dust cover 1 can abut against the second stepped surface of the outer ring 6, thereby connecting the deep groove ball bearing dust cover 1 and the outer ring 6.

[0059] In a preferred embodiment, the inner ring 5 of the bearing has a third stepped groove 9 and a fourth stepped groove 10. The third stepped groove 9 is used to abut against the outer end bent section 3 of the deep groove ball bearing dust cover above the cage, and the fourth stepped groove 10 is used to abut against the outer end bent section 3 of the deep groove ball bearing dust cover below the cage.

[0060] A third stepped groove 9 is provided on the inner side of the inner ring 5 near the top, so that a third stepped surface is formed on the upper part of the inner ring 5. The inner circumferential surface of the inner end bent section 4 of the upper deep groove ball bearing dust cover 1 can abut against the inner circumferential surface of the inner ring 5, and part of the bottom surface of the inner end bent section 4 of the upper deep groove ball bearing dust cover 1 can abut against the third stepped surface of the inner ring 5.

[0061] A fourth stepped groove 10 is provided on the inner side of the inner ring 5 near the bottom. The second stepped groove 8 forms a fourth stepped surface on the bottom of the outer ring 6. The inner circumferential surface of the inner end bent section 4 of the lower deep groove ball bearing dust cover 1 can abut against the inner circumferential surface of the inner ring 5, and part of the bottom surface of the inner end bent section 4 of the lower deep groove ball bearing dust cover 1 can abut against the fourth stepped surface of the inner ring 5, thereby connecting the deep groove ball bearing dust cover 1 and the inner ring 5.

[0062] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0063] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0064] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A dust cover for a deep groove ball bearing, characterized in that, Includes a dust cover body; one end of the dust cover body in the radial direction is connected to an outer end bent section that abuts against the outer ring of the bearing, and one end of the dust cover body in the radial direction is connected to an inner end bent section that abuts against the inner ring of the bearing; The dust cover body includes a first connecting section, a second connecting section, and a third connecting section connected in sequence; the first connecting section is used to connect with the outer end bending section, and the third connecting section is used to connect with the inner end bending section; the second connecting section is inclinedly connected between the first connecting section and the third connecting section, so that the height of the first connecting section along the axial direction of the dust cover body is lower than the height of the third connecting section, thereby making the first connecting section form an arc-shaped guide surface for wrapping the outer circumference of the outer ring of the bearing.

2. The dust cover for a deep groove ball bearing according to claim 1, characterized in that, The outer end bend is angled toward the outer ring of the bearing.

3. A dust cover for a deep groove ball bearing according to claim 2, characterized in that, The outer bending section is set at an obtuse angle to the main body of the dust cover.

4. A dust cover for a deep groove ball bearing according to claim 3, characterized in that, The angle between the outer bending section and the main body of the dust cover is 100°-150°.

5. A dust cover for a deep groove ball bearing according to claim 1, characterized in that, The inner end bending section is set perpendicular to the third connecting section along the axial direction.

6. A dust cover for a deep groove ball bearing according to claim 1, characterized in that, The projection lengths of the outer bending section and the inner bending section along the axial direction of the dust cover body are equal. Alternatively, the length of the projection of the outer bending section in the axial direction of the dust cover body is greater than the length of the projection of the inner bending section in the axial direction of the dust cover body. Alternatively, the length of the projection of the outer bending section onto the axial direction of the dust cover body is less than the length of the projection of the inner bending section onto the axial direction of the dust cover body.

7. A deep groove ball bearing, characterized in that, Includes the bearing inner ring, bearing outer ring, cage, balls, and a dust cover for a deep groove ball bearing as described in any one of claims 1-6; The inner ring of the bearing is fitted inside the outer ring of the bearing. A cage connects the inner and outer rings, and balls are connected in the cage pockets. Two deep groove ball bearing dust covers are also connected between the inner and outer rings, respectively located above and below the cage. The outer bent section of the deep groove ball bearing dust cover abuts against the outer ring of the bearing, and the inner bent section of the deep groove ball bearing dust cover abuts against the inner ring of the bearing.

8. A deep groove ball bearing according to claim 7, characterized in that, The outer ring of the bearing has a first stepped groove and a second stepped groove. The first stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing above the cage, and the second stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing below the cage.

9. A deep groove ball bearing according to claim 7, characterized in that, The inner ring of the bearing has a third stepped groove and a fourth stepped groove. The third stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing above the cage, and the fourth stepped groove is used to abut against the outer bent section of the dust cover of the deep groove ball bearing below the cage.

10. A deep groove ball bearing according to claim 7, characterized in that, The dust cover for the deep groove ball bearing above the cage is symmetrically positioned with the dust cover for the deep groove ball bearing below the cage.

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