Bearing sealing assembly and bearing device

Abstract

The utility model relates to the technical field of bearings, and discloses a bearing sealing assembly and a bearing device. The bearing sealing assembly comprises an elastic conductive piece, a main body part of the elastic conductive piece is used for being in conductive contact with a first bearing ring, and the main body part is connected with an elastic connecting part and a first lip part and a second lip part which are connected to the elastic connecting part. And the elastic connecting part is configured to enable the second lip part to be in conductive contact with the second bearing ring after the first lip part is abraded. Therefore, even if the first lip part is abraded in the long-term use process, the elastic connecting part can enable the second lip part to be in conductive contact with the second bearing ring, so that the first bearing ring and the second bearing ring are stably and electrically connected, the conductive performance of the elastic conductive part can be ensured, and the service life of the bearing sealing assembly is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearings, in particular to a bearing sealing assembly and a bearing device. BACKGROUND

[0002] In order to avoid electric corrosion of the bearing, an electrically conductive sealing design is usually adopted on the bearing. The bearing is sealed by the electrically conductive rubber, so as to prevent impurities from entering the inside of the bearing, and the inner ring and the outer ring of the bearing are electrically connected by the electrically conductive rubber, so as to avoid electric current passing through the bearing raceway and thus avoid electric corrosion. However, in the long-term use of the bearing, the electrically conductive rubber is prone to wear and thus lead to electric conduction failure. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a bearing sealing assembly and a bearing device, which are beneficial to prolong the service life of the bearing sealing assembly.

[0004] The present application provides a bearing sealing assembly. The bearing sealing assembly is used to be installed between a first bearing ring and a second bearing ring capable of relative rotation. The bearing sealing assembly comprises an annular base frame. The bearing sealing assembly further comprises an elastic conductive member. The elastic conductive member comprises a main body portion, the main body portion is arranged on the annular base frame, and the main body portion is used to be in electrically conductive contact with the first bearing ring. The elastic conductive member further comprises an elastic connecting portion, the elastic connecting portion is connected to the main body portion. The elastic conductive member further comprises a first lip portion, the first lip portion is connected to the elastic connecting portion. The elastic conductive member further comprises a second lip portion, the second lip portion is connected to the elastic connecting portion. The first lip portion is used to be in electrically conductive contact with the second bearing ring at least in the initial stage of operation of the bearing sealing assembly, and the elastic connecting portion is configured to enable the second lip portion to be in electrically conductive contact with the second bearing ring after the first lip portion is worn.

[0005] In an embodiment of the present application, in the radial direction of the annular base frame, the elastic connecting portion is located at one end of the main body portion, the first lip portion and the second lip portion are connected to the end of the elastic connecting portion away from the main body portion, and the first lip portion and the second lip portion are respectively located on both sides of the elastic connecting portion in the axial direction of the annular base frame.

[0006] In an embodiment of the present application, the first lip portion extends obliquely away from the second lip portion and away from the main body portion.

[0007] In an embodiment of the present application, the second lip portion extends obliquely away from the first lip portion and away from the main body portion.

[0008] In an embodiment of the present application, the included angle between the first lip portion and the second lip portion is 40° to 70°.

[0009] In an embodiment of the present application, in the axial direction of the annular base frame, the size of the end of the main body portion close to the elastic connecting portion is greater than the size of the elastic connecting portion.

[0010] Correspondingly, the application further provides a bearing device, comprising: a first bearing ring and a second bearing ring arranged in a nested manner; and a bearing sealing assembly as described in the above embodiments, which is mounted between the first bearing ring and the second bearing ring.

[0011] In an embodiment of the application, the elastic connecting part of the bearing sealing assembly has a first attitude and a second attitude, and the angle between the elastic connecting part in the first attitude and the axial direction of the annular base frame is different from the angle between the elastic connecting part in the second attitude and the axial direction of the annular base frame; when the elastic connecting part is in the first attitude, the first lip part is in conductive contact with the second bearing ring, and the second lip part is arranged in a spaced manner with the second bearing ring, so that the second lip part and the second bearing ring form a gap sealing structure; when the elastic connecting part is in the second attitude, the second lip part is in conductive contact with the second bearing ring.

[0012] In an embodiment of the application, the side wall of the second bearing ring facing the elastic conductive part is provided with a groove and a first boss distributed along the axial direction of the annular base frame; wherein, when the elastic connecting part is in the first attitude, the first lip part is in conductive contact with the first boss, and the second lip part is embedded in the groove to form a gap sealing structure.

[0013] In an embodiment of the application, the side wall of the second bearing ring facing the elastic conductive part is provided with a groove, a first boss and a second boss; the first boss and the second boss are respectively located on the two sides of the groove in the axial direction of the annular base frame; wherein, when the elastic connecting part is in the second attitude, the first lip part is in conductive contact with the first boss, and the second lip part is in conductive contact with the second boss.

[0014] The application has the following beneficial effects: Different from the prior art, the application provides a bearing sealing assembly and a bearing device. The bearing sealing assembly comprises an elastic conductive part, a main body part of the elastic conductive part is used for conductive contact with a first bearing ring, the main body part is connected with an elastic connecting part and first and second lip parts connected to the elastic connecting part, and the first lip part is used for conductive contact with a second bearing ring at least in the initial stage of operation of the bearing sealing assembly, so as to realize electrical connection of the first bearing ring and the second bearing ring. In other words, the bearing sealing assembly of the application not only plays a sealing role, but also plays a role in preventing electric corrosion.

[0015] Moreover, the elastic connecting part is configured to enable the second lip part to be in conductive contact with the second bearing ring after the first lip part is worn. In this way, even if the first lip part is worn in the long-term use process, the elastic connecting part can enable the second lip part to be in conductive contact with the second bearing ring, so that the first bearing ring and the second bearing ring are stably electrically connected, the conductive performance of the elastic conductive part can be ensured, and the service life of the bearing sealing assembly can be prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 is a structural schematic view of an embodiment of a bearing device of the present application;

[0018] Figure 2 is a structural schematic view of an embodiment of a bearing sealing assembly of the present application;

[0019] Figure 3 is Figure 1 a structural schematic view of a region of the bearing device A shown;

[0020] Figure 4 is Figure 1 a structural schematic view of another state of the bearing device;

[0021] Figure 5 is Figure 4 a structural schematic view of a region of the bearing device B shown.

[0022] Explanation of reference signs:

[0023] 10 bearing device; 11 first bearing ring; 12 second bearing ring; 121 recess; 122 first boss; 123 second boss; 20 bearing sealing assembly; 21 annular base frame; 21a first side; 21b second side; 22 elastic conductive member; 221 main body part; 222 elastic connecting part; 223 first lip part; 224 second lip part. DETAILED DESCRIPTION

[0024] The present application provides a bearing sealing assembly and a bearing device, which are described in detail below. It should be noted that the order of the following embodiment descriptions is not intended to limit the preferred order of the embodiments of the present application. Moreover, in the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0025] To solve the technical problem that the conductive rubber of the bearing is prone to wear and tear and thus causes conductive failure in the prior art, an embodiment of the present application provides a bearing sealing assembly. The bearing sealing assembly is used to be installed between a first bearing ring and a second bearing ring capable of relative rotation. The bearing sealing assembly comprises an annular base frame. The bearing sealing assembly further comprises an elastic conductive member. The elastic conductive member comprises a main body portion, which is arranged on the annular base frame and is used to be in conductive contact with the first bearing ring. The elastic conductive member further comprises an elastic connecting portion, which is connected to the main body portion. The elastic conductive member further comprises a first lip portion, which is connected to the elastic connecting portion. The elastic conductive member further comprises a second lip portion, which is connected to the elastic connecting portion. The first lip portion is used to be in conductive contact with the second bearing ring at least in the initial stage of operation of the bearing sealing assembly, and the elastic connecting portion is configured to enable the second lip portion to be in conductive contact with the second bearing ring after the first lip portion is worn. Details are described below.

[0026] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the bearing device of the present application. Figure 1 It is shown that the bearing device 10 is a longitudinal section along the axial direction thereof, and is a partial sectional structure of the bearing device 10.

[0027] In an embodiment, the bearing device 10 comprises a first bearing ring 11 and a second bearing ring 12, the first bearing ring 11 and the second bearing ring 12 are arranged in a nested manner and are capable of relative rotation. One of the first bearing ring 11 and the second bearing ring 12 is an outer ring of the bearing device 10, and the other is an inner ring of the bearing device 10. The embodiment of the present application takes the first bearing ring 11 as the outer ring of the bearing device 10 and the second bearing ring 12 as the inner ring of the bearing device 10 as an example for description, which is only required for discussion and does not constitute a limitation.

[0028] The bearing device 10 further comprises a bearing sealing assembly 20. The bearing sealing assembly 20 is used to be installed between the first bearing ring 11 and the second bearing ring 12, and is used to seal the inside of the bearing device 10, i.e., to seal the space between the first bearing ring 11 and the second bearing ring 12, so as to prevent external impurities from entering the inside of the bearing device 10. Moreover, the bearing sealing assembly 20 is also used to realize the electrical connection of the first bearing ring 11 and the second bearing ring 12, so as to avoid the current passing through the raceway of the bearing device 10 and thus avoid the occurrence of electric corrosion. In other words, the bearing sealing assembly 20 of the embodiment plays a sealing role and also plays a role of preventing electric corrosion.

[0029] The bearing sealing assembly 20 of the embodiment of the present application is described below.

[0030] Please refer to Figure 2 , Figure 2is a structural schematic view of a bearing sealing assembly according to an embodiment of the present application. Figure 2 is a longitudinal section view of the bearing sealing assembly 20 along its axial direction, and is a partial section view of the bearing sealing assembly 20.

[0031] In an embodiment, the bearing sealing assembly 20 comprises an annular base 21. Specifically, the annular base 21 extends along the circumferential direction of the first bearing ring 11 and the second bearing ring 12, so that the annular base 21 can be mounted between the first bearing ring 11 and the second bearing ring 12. The annular base 21 has a first side 21a and a second side 21b in the axial direction X, respectively. When the annular base 21 is mounted between the first bearing ring 11 and the second bearing ring 12, the first side 21a faces the inner side of the bearing device 10, and the second side 21b faces the air side of the bearing device 10.

[0032] The bearing sealing assembly 20 further comprises an elastic conductive member 22 arranged on the annular base 21. The elastic conductive member 22 is electrically connected to the first bearing ring 11 and the second bearing ring 12, respectively, to avoid current passing through the raceway of the bearing device 10, thereby avoiding electric corrosion. In addition, the elastic conductive member 22 can also seal the inner side of the bearing device 10, i.e., seal the space between the first bearing ring 11 and the second bearing ring 12, to avoid external impurities entering the inner side of the bearing device 10.

[0033] Optionally, the elastic conductive member 22 can be arranged by covering the annular base 21. The material of the annular base 21 can be metal, and the material of the elastic conductive member 22 can be conductive rubber, conductive silicone or other materials with elastic and conductive properties, which are not limited herein.

[0034] Please refer to Figures 3 to 5 , Figure 3 is Figure 1 a structural schematic view of the bearing device A region, Figure 4 is Figure 1 a structural schematic view of another state of the bearing device, Figure 5 is Figure 4 a structural schematic view of the bearing device B region.

[0035] In an embodiment, the elastic conductive member 22 comprises a main body portion 221, which is arranged on the annular base 21 and is configured to be in conductive contact with the first bearing ring 11. The elastic conductive member 22 further comprises an elastic connecting portion 222, which is connected to the main body portion 221. The elastic conductive member 22 further comprises a first lip portion 223, which is connected to the elastic connecting portion 222. In this embodiment, the main body portion 221 is in conductive contact with the first bearing ring 11, and the first lip portion 223 is configured to be in conductive contact with the second bearing ring 12 at least in the initial stage of the operation of the bearing seal assembly 20, so as to electrically connect the first bearing ring 11 and the second bearing ring 12, thereby avoiding the occurrence of electric corrosion of the bearing device 10.

[0036] The elastic conductive member 22 further comprises a second lip portion 224. The second lip portion 224 is connected to the elastic connecting portion 222. The elastic connecting portion 222 is configured to enable the second lip portion 224 to be in conductive contact with the second bearing ring 12 after the first lip portion 223 is worn out. In this way, even if the first lip portion 223 is worn out during long-term use, the elastic connecting portion 222 can enable the second lip portion 224 to be in conductive contact with the second bearing ring 12, as shown in FIG. 2B, so that the first bearing ring 11 and the second bearing ring 12 are stably electrically connected, and the conductive performance of the elastic conductive member 22 can be ensured, thereby facilitating the extension of the service life of the bearing seal assembly 20. Figure 5

[0037] Specifically, in the radial direction Y of the annular base 21, the elastic connecting portion 222 is located at one end of the main body portion 221, and the first lip portion 223 and the second lip portion 224 are connected to the other end of the elastic connecting portion 222 away from the main body portion 221, and the first lip portion 223 and the second lip portion 224 are respectively located on the two sides of the elastic connecting portion 222 in the axial direction X of the annular base 21. In the axial direction X of the annular base 21, the second lip portion 224 is closer to the first side 21a than the first lip portion 223.

[0038] Further, the elastic connecting portion 222 can be configured to enable the first lip portion 223 and the second lip portion 224 to be in conductive contact with the second bearing ring 12 after the first lip portion 223 is worn out. In this way, even if the first lip portion 223 is worn out during long-term use, the elastic connecting portion 222 can enable the first lip portion 223 and the second lip portion 224 to be in conductive contact with the second bearing ring 12, as shown in FIG. 2C, so that the first lip portion 223 and the second lip portion 224 cooperatively electrically connect the first bearing ring 11 and the second bearing ring 12, and the conductive performance of the elastic conductive member 22 can be further ensured, thereby facilitating the extension of the service life of the bearing seal assembly 20. Figure 5

[0039] ​​Of course, in other embodiments of the present application, the elastic connecting portion 222 can also be configured to make the second lip portion 224 in conductive contact with the second bearing ring 12 after the first lip portion 223 is worn, and the first lip portion 223 can not be in conductive contact with the second bearing ring 12 after being worn, and the first bearing ring 11 and the second bearing ring 12 are electrically connected through the conductive contact between the second lip portion 224 and the second bearing ring 12, which can also ensure the conductive performance of the elastic conductive piece 22 and is beneficial to prolong the service life of the bearing sealing assembly 20, which is not limited herein.

[0040] It should be noted that for the example that the first bearing ring 11 is the outer ring of the bearing device 10 and the second bearing ring 12 is the inner ring of the bearing device 10, the main body portion 221 of the elastic conductive piece 22 can be in conductive contact with the outer ring of the bearing device 10, and the first lip portion 223 and the second lip portion 224 can be in conductive contact with the inner ring of the bearing device 10. Of course, in other embodiments of the present application, the first bearing ring 11 can also be the inner ring of the bearing device 10, and the second bearing ring 12 is the outer ring of the bearing device 10, and the main body portion 221 of the elastic conductive piece 22 can be in conductive contact with the inner ring of the bearing device 10, and the first lip portion 223 and the second lip portion 224 can be in conductive contact with the outer ring of the bearing device 10, which is not limited herein.

[0041] In an embodiment, the elastic connecting portion 222 has a first attitude and a second attitude. The angle between the elastic connecting portion 222 in the first attitude and the axial direction X of the annular base 21 is different from the angle between the elastic connecting portion 222 in the second attitude and the axial direction X of the annular base 21.

[0042] As shown in FIG. 2, the first lip portion 223 is in conductive contact with the second bearing ring 12, and the second lip portion 224 is spaced apart from the second bearing ring 12 when the elastic connecting portion 222 is in the first attitude. Figure 3 As shown in FIG. 2, the first lip portion 223 is in conductive contact with the second bearing ring 12, and the second lip portion 224 is spaced apart from the second bearing ring 12 when the elastic connecting portion 222 is in the first attitude.

[0043] As shown in FIG. 2, the first lip portion 223 is in conductive contact with the second bearing ring 12, and the second lip portion 224 is spaced apart from the second bearing ring 12 when the elastic connecting portion 222 is in the first attitude. Figure 5As shown, when the elastic connection 222 is in the second posture, at least the second lip 224 is in conductive contact with the second bearing ring 12. Specifically, both the first lip 223 and the second lip 224 can be in conductive contact with the second bearing ring 12. As the first lip 223 wears down during long-term use, its conductivity decreases. When the elastic connection 222 changes from the first posture to the second posture, the second lip 224 becomes in conductive contact with the second bearing ring 12. At this time, both the first lip 223 and the second lip 224 are in conductive contact with the second bearing ring 12, and the current flows simultaneously through the first lip 223 and the second lip 224 to the first bearing ring 11. This avoids a significant decrease in the conductivity of the elastic conductive element 22, thus ensuring the conductivity of the elastic conductive element 22 and extending the service life of the bearing sealing assembly 20.

[0044] Specifically, such as Figure 2 As shown, in its natural state, the elastic connection 222 extends radially Y along the annular base 21, such that the angle between the elastic connection 222 in the first posture and the axial direction X of the annular base 21 is smaller than the angle between the elastic connection 222 in the second posture and the axial direction X of the annular base 21. The natural state should be understood as the state where the bearing seal assembly 20 is not installed between the first bearing ring 11 and the second bearing ring 12. In the natural state, the extension direction of the elastic connection 222 is parallel to the radial direction Y of the annular base 21, or there is a small angle between the extension direction of the elastic connection 222 and the radial direction Y of the annular base 21, which does not exceed 10°.

[0045] like Figure 3 As shown, when the elastic connection 222 is in the first posture, the first lip 223 is in conductive contact with the second bearing ring 12. The first lip 223 and the second bearing ring 12 interfere and deform, causing the first lip 223 to pull the elastic connection 222 towards the second side 21b. At this time, the elastic connection 222 extends obliquely relative to the axial direction X of the annular base 21, and there is an included angle θ between the elastic connection 222 and the axial direction X of the annular base 21. The first lip 223 also pulls the second lip 224 towards the second side 21b through the elastic connection 222, so that the second lip 224 and the second bearing ring 12 are spaced apart to form a gap-type sealing structure. Figure 5 As shown, as the first lip 223 wears down during long-term use, the elastic connection 222 changes from a first posture to a second posture. In the second posture, the angle θ between the elastic connection 222 and the axial direction X of the annular base 21 increases, causing the second lip 224 to make conductive contact with the second bearing ring 12. The first lip 223 and the second lip 224 cooperate to achieve electrical connection between the first bearing ring 11 and the second bearing ring 12, ensuring the conductivity of the elastic conductive element 22 and thus extending the service life of the bearing sealing assembly 20.

[0046] Please continue to refer to Figure 2 In an embodiment, in the axial direction X of the annular base 21, the dimension of the main body portion 221 near the end of the second bearing ring 12 is greater than the dimension of the elastic connecting portion 222, i.e. the elastic connecting portion 222 presents an elongated waist structure relative to the main body portion 221 and enables the elastic connecting portion 222 to have good elastic deformation capability, which means that the first lip portion 223 and the second lip portion 224 share a waist (i.e. the elastic connecting portion 222) and are relatively easy to pull and deform each other, for example, the first lip portion 223 is easy to pull the elastic connecting portion 222 and the second lip portion 224 towards the second side 21b, and after the first lip portion 223 wears out, the elastic connecting portion 222 is easy to pull the second lip portion 224 towards the first side 21a to make electrically conductive contact with the second bearing ring 12.

[0047] In an embodiment, in the natural state, the first lip portion 223 extends obliquely away from the second lip portion 224 (towards the second side 21b) and away from the main body portion 221, to facilitate the first lip portion 223 to make electrically conductive contact with the second bearing ring 12 when the bearing seal assembly 20 is installed between the first bearing ring 11 and the second bearing ring 12.

[0048] In an embodiment, in the natural state, the length of the first lip portion 223 can be greater than the length of the second lip portion 224, to facilitate the first lip portion 223 to make electrically conductive contact with the second bearing ring 12 when the bearing seal assembly 20 is installed between the first bearing ring 11 and the second bearing ring 12.

[0049] In an embodiment, in the natural state, the second lip portion 224 extends obliquely away from the first lip portion 223 (towards the first side 21a) and away from the main body portion 221, to make the second lip portion 224 more easily make electrically conductive contact with the second bearing ring 12 when the elastic connecting portion 222 pulls the second lip portion 224 towards the first side 21a after the first lip portion 223 wears out.

[0050] In an embodiment, in the natural state, the included angle a between the first lip portion 223 and the second lip portion 224 is 40° to 70°, for example, the included angle a can be any value among 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, etc.

[0051] In the example where the first bearing ring 11 is the outer ring of the bearing assembly 10 and the second bearing ring 12 is the inner ring of the bearing assembly 10, the first bearing ring 11 is fitted around the outer periphery of the second bearing ring 12. The second bearing ring 12 has a groove 121 and a first boss 122 on its sidewall facing the elastic conductive member 22. In the axial direction X of the annular base 21, the first boss 122 is closer to the second side 21b relative to the groove 121. When the elastic connecting portion 222 is in a first position, the first lip 223 is in conductive contact with the first boss 122, and the second lip 224 is embedded in the groove 121 to form a gap-type sealing structure. The second bearing ring 12 also has a second boss 123 on its sidewall facing the elastic conductive member 22. In the axial direction X of the annular base 21, the second boss 123 is closer to the first side 21a relative to the groove 121. When the elastic connecting portion 222 is in a second position, the second lip 224 is in conductive contact with the second boss 123.

[0052] like Figure 3 As shown, after the bearing sealing assembly 20 is installed between the first bearing ring 11 and the second bearing ring 12, the elastic connecting part 222 is in a first posture, the first lip 223 is in conductive contact with the first boss 122, and the first lip 223 interferes with and deforms with the second bearing ring 12, so that the first lip 223 pulls the elastic connecting part 222 towards the second side 21b; the first lip 223 also pulls the second lip 224 towards the second side 21b through the elastic connecting part 222, so that the second lip 224 and the second bearing ring 12 are spaced apart to form a gap-type sealing structure, so as to restrict the grease inside the bearing device 10 from approaching the first lip 223, so that the current can be smoothly conducted through the first lip 223 to the first bearing ring 11. Figure 5 As shown, as the first lip 223 wears down during long-term use, it gradually shortens, reducing the contact area between the first lip 223 and the second bearing ring 12. The elastic connection 222 then changes from a first posture to a second posture. In the second posture, the elastic connection 222 pulls the second lip 224 towards the first side 21a, making the second lip 224 electrically contact the second bearing ring 12. The first lip 223 and the second lip 224 cooperate to achieve electrical connection between the first bearing ring 11 and the second bearing ring 12, ensuring the conductivity of the elastic conductive element 22 and thus extending the service life of the bearing sealing assembly 20.

[0053] In the first attitude of the elastic connecting portion 222, the first lip 223 is in conductive contact with the second bearing ring 12, and the second lip 224 is spaced apart from the second bearing ring 12, and the first lip 223 has a friction force with the second bearing ring 12; while in the second attitude of the elastic connecting portion 222, the first lip 223 and the second lip 224 are both in conductive contact with the second bearing ring 12, and the friction force between the first lip 223 and the second bearing ring 12 is reduced due to wear, and the first lip 223 and the second lip 224 are both in light friction contact with the second bearing ring 12, and the friction torque does not increase significantly, which is conducive to ensuring that the elastic conductive part 22 and the second bearing ring 12 remain in low-friction cooperation.

[0054] For the example of cooperation between the first lip 223 and the second bearing ring 12, in order to ensure the sealing effect and the conductive effect, a large interference is usually designed between the first lip 223 and the second bearing ring 12, which results in excessive friction torque between the first lip 223 and the second bearing ring 12, and the first lip 223 wears seriously and has a short service life. The present application cooperates the first lip 223 with the second bearing ring 12 before the first lip 223 wears, and the first lip 223 and the second lip 224 jointly cooperate with the second bearing ring 12 after the first lip 223 wears, and there is no need to design a large interference between the first lip 223 and the second bearing ring 12, and the first lip 223 and the second lip 224 are both in light friction contact with the second bearing ring 12, that is, even if the bearing device 10 does not need the bearing sealing assembly 20 to have conductive capability, the bearing sealing assembly 20 of the present application can effectively reduce the friction torque, which is conducive to prolonging the service life.

[0055] In summary, the present application provides a bearing sealing assembly and a bearing device. The bearing sealing assembly includes an elastic conductive part, a main body portion of the elastic conductive part is used to be in conductive contact with a first bearing ring, and an elastic connecting portion, a first lip and a second lip connected to the elastic connecting portion are connected to the main body portion, the first lip is used to be in conductive contact with a second bearing ring at least in the initial stage of operation of the bearing sealing assembly, so as to realize electrical connection between the first bearing ring and the second bearing ring. In other words, the bearing sealing assembly of the present application not only plays a sealing role, but also plays a role in preventing electric corrosion. Moreover, the elastic connecting portion is configured to enable the second lip to be in conductive contact with the second bearing ring after the first lip wears. In this way, even if the first lip wears during long-term use, the elastic connecting portion can enable the second lip to be in conductive contact with the second bearing ring, so that the first bearing ring and the second bearing ring are stably electrically connected, the conductive performance of the elastic conductive part can be ensured, and the service life of the bearing sealing assembly can be prolonged.

[0056] The bearing sealing assembly and the bearing device provided by the application are described in detail above, and the principles and implementation manners of the application are described by applying specific examples. The above description of the examples is only used to help understand the method of the application and the core idea thereof. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the application. In conclusion, the content of the description should not be understood as a limitation on the application.

Claims

1. A bearing seal assembly characterized by, The bearing sealing assembly is arranged between a first bearing ring and a second bearing ring capable of relative rotation, and comprises: a ring-shaped base frame; and a resilient conductive member comprising: a main body portion arranged on the ring-shaped base frame and configured to be in conductive contact with the first bearing ring; a resilient connecting portion connected to the main body portion; a first lip portion connected to the resilient connecting portion; and a second lip portion connected to the resilient connecting portion; the first lip portion is configured to be in conductive contact with the second bearing ring at least in an initial stage of operation of the bearing sealing assembly, and the resilient connecting portion is configured to enable the second lip portion to be in conductive contact with the second bearing ring after the first lip portion is worn out.

2. The bearing sealing assembly according to claim 1, wherein: in a radial direction of the ring-shaped base frame, the resilient connecting portion is located at one end of the main body portion, the first lip portion and the second lip portion are connected to the resilient connecting portion at an end away from the main body portion, and the first lip portion and the second lip portion are respectively located on two sides of the resilient connecting portion in an axial direction of the ring-shaped base frame.

3. The bearing sealing assembly according to claim 2, wherein: the first lip portion extends obliquely away from the second lip portion and away from the main body portion.

4. The bearing sealing assembly according to claim 2, wherein: the second lip portion extends obliquely away from the first lip portion and away from the main body portion.

5. The bearing sealing assembly according to claim 1, wherein: an included angle between the first lip portion and the second lip portion is 40° to 70°.

6. The bearing sealing assembly according to claim 1, wherein: in the axial direction of the ring-shaped base frame, a size of an end of the main body portion close to the resilient connecting portion is greater than a size of the resilient connecting portion.

7. A bearing arrangement, characterized by comprises: a first bearing ring and a second bearing ring arranged in a nested manner; and the bearing sealing assembly according to any one of claims 1 to 5 is arranged between the first bearing ring and the second bearing ring.

8. The bearing device according to claim 7, wherein: the resilient connecting portion of the bearing sealing assembly has a first attitude and a second attitude, an included angle between the resilient connecting portion in the first attitude and an axial direction of the ring-shaped base frame is different from an included angle between the resilient connecting portion in the second attitude and the axial direction of the ring-shaped base frame; in the first attitude of the resilient connecting portion, the first lip portion is in conductive contact with the second bearing ring, and the second lip portion is arranged in a spaced manner with the second bearing ring, so that the second lip portion forms a gap sealing structure with the second bearing ring; in the second attitude of the resilient connecting portion, the second lip portion is in conductive contact with the second bearing ring.

9. The bearing device according to claim 8, wherein: the second bearing ring is provided with grooves distributed in an axial direction of the ring-shaped base frame and a first boss on a side wall of the second bearing ring facing the resilient conductive member. Wherein, in the first attitude of the elastic connecting part, the first lip is in conductive contact with the first boss, and the second lip is embedded in the groove to form a clearance seal structure.

10. The bearing device of claim 8, wherein, The second bearing ring is provided with a groove, a first boss and a second boss on the side wall of the elastic conductive piece; in the axial direction of the annular base frame, the first boss and the second boss are respectively located on the two sides of the groove; Wherein, in the second attitude of the elastic connecting part, the first lip is in conductive contact with the first boss, and the second lip is in conductive contact with the second boss.

Images