A waterproof bearing

Abstract

The present invention belongs to the field of bearings, and specifically is a waterproof bearing; it comprises an inner ring body, an outer ring body, rolling elements and a retaining frame, wherein a retaining frame is arranged between the outer ring body and the inner ring body, and a plurality of rolling elements are evenly arranged on the retaining frame along the circumferential direction; it also comprises: a sealing ring, wherein the sealing ring is arranged between the inner ring body and the outer ring body; a supporting component is arranged inside the sealing ring, thereby supporting and sharing stress for the sealing ring, and preventing the sealing ring from being permanently deformed and reducing the sealing effect; the present invention provides a supporting component inside the sealing ring, thereby supporting and sharing stress for the sealing ring, and preventing the sealing ring from being permanently deformed and reducing the sealing effect.

Description

Technical Field

[0001] The invention belongs to the field of bearings, in particular to a waterproof bearing. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment; their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Bearings are well-known mechanical components used to support rotating shafts, etc. There are many types of rolling bearings, such as radial bearings used to mainly support radial loads, axial bearings used to mainly support axial loads, and bearings used to support a combination of radial and axial loads. These bearings can also be provided with seals to close the space where the rolling body is located, such as waterproof bearings that are provided with sealing rings to prevent water, dirt, debris, etc. from entering the bearings and affecting the accuracy of the bearings;

[0003] In the prior art, waterproof bearings generally prevent water, dirt, debris, etc. from entering the bearing by setting a sealing ring between the inner ring and the outer ring. However, due to long-term stress, the sealing ring may be damaged, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring, causing some water or debris to enter the bearing, resulting in reduced internal wear accuracy of the bearing.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a waterproof bearing to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the sealing ring on the waterproof bearing will be damaged due to long-term stress, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring, causing some water or debris to enter the bearing, resulting in reduced wear accuracy inside the bearing.

[0006] The present invention provides a waterproof bearing, comprising an inner ring body, an outer ring body, rolling elements and a retaining frame, wherein a retaining frame is arranged between the outer ring body and the inner ring body, and a plurality of rolling elements are evenly arranged on the retaining frame along the circumferential direction; and further comprising:

[0007] The sealing ring is arranged between the inner ring body and the outer ring body; a support component is arranged inside the sealing ring, and the support component is arranged inside the sealing ring to support and share the stress of the sealing ring, thereby preventing the sealing ring from being permanently deformed and reducing the sealing effect.

[0008] Preferably, the support assembly includes at least three connecting rods, and the connecting rods are hinged to each other.

[0009] Preferably, at least one push rod is hinged between the connecting rods.

[0010] Preferably, an arc-shaped plate is hinged at one end of the push rod.

[0011] Preferably, at least one arc-shaped plate is provided and is evenly arranged in the inner ring of the sealing ring.

[0012] Preferably, the connecting rod, the push rod and the tip of the arc-shaped plate are rounded.

[0013] Preferably, protrusions are provided on both inner and outer sides of the sealing ring.

[0014] Preferably, the contact portion between the sealing ring and the inner ring body and the outer ring body is provided with bw type rubber.

[0015] Preferably, the contact portion between the sealing ring and the retaining frame is configured as a hollow structure, and grease is placed inside the hollow structure.

[0016] Preferably, the lubricating grease is waterproof lubricating grease.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a waterproof bearing, which provides a support component in the sealing ring to support and share the stress of the sealing ring, thereby preventing the sealing ring from being permanently deformed and reducing the sealing effect.

[0019] 2. The present invention provides a waterproof bearing, which provides a push rod and an arc plate. When pushed by the push rod, the arc plate pushes and squeezes the inner ring of the sealing ring, so that the gap generated by the new deformation of the sealing ring and the contact part with the inner ring body is eliminated, thereby further improving the sealing effect of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the sealing ring;

[0023] Figure 3 It is the stress deformation state diagram of the sealing ring;

[0024] In the figure: inner ring body 1, outer ring body 2, rolling body 3, retaining frame 4, sealing ring 5, protrusion 51, BW type rubber 52, supporting assembly 6, connecting rod 61, push rod 62, arc plate 63. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] A defect of the cyclone dust collector in the prior art is that the sealing ring 5 on the waterproof bearing may be damaged due to long-term stress, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring 5, causing some water or debris to enter the bearing, resulting in reduced wear accuracy inside the bearing.

[0027] To solve the above problems, the main concept adopted in this embodiment is: by arranging a support assembly 6 in the sealing ring 5, the sealing ring 5 can be supported and stress-shared to prevent the sealing ring 5 from being permanently deformed due to long-term stress and affecting the sealing effect.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods;

[0029] The present invention provides a waterproof bearing, comprising an inner ring body 1, an outer ring body 2, rolling bodies 3 and a retaining frame 4, wherein the retaining frame 4 is provided between the outer ring body 2 and the inner ring body 1, and a plurality of rolling bodies 3 are placed in the retaining frame 4; and further comprising:

[0030] The sealing ring 5 is arranged between the inner ring body 1 and the outer ring body 2; a support component 6 is arranged inside the sealing ring 5, and the support component 6 is arranged inside the sealing ring 5 to support and share the stress of the sealing ring 5, thereby preventing the sealing ring 5 from being permanently deformed and reducing the sealing effect.

[0031] During the use of the bearing, the sealing ring 5 arranged between the inner ring body 1 and the outer ring body 2 will be subjected to stress for a long time. In some special environments, such as on a bicycle tire, the magnitude and direction of the stress on the bearing are variable, which will cause damage to the sealing ring 5, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring 5, causing some water or debris to enter the interior of the bearing, resulting in reduced wear accuracy inside the bearing. The present invention provides a support assembly 6 in the sealing ring 5 to support and share the stress of the sealing ring 5, thereby preventing the sealing ring 5 from being permanently deformed due to long-term stress and affecting the sealing effect.

[0032] As a specific implementation of the present invention, the support assembly 6 includes at least three connecting rods 61, and the connecting rods 61 are hinged to each other.

[0033] The support assembly 6 includes at least three connecting rods 61, which are hinged and finally closed into a ring. This allows the support assembly 6 to adapt to the deformation of the sealing ring 5 and to provide an all-round support effect on the sealing ring 5 when the force direction of the sealing ring 5 changes. By hingedly connecting the connecting rods 61 into a ring, the force at the stress point is shared by multiple connecting rods 61, making the force more uniform and the support more firm.

[0034] As a specific implementation of the present invention, at least one push rod 62 is hinged between the connecting rods 61 .

[0035] As a specific implementation of the present invention, one end of the push rod 62 is hinged with an arc plate 63 .

[0036] As a specific implementation of the present invention, at least one arc-shaped plate 63 is provided and is evenly arranged in the inner circle of the sealing ring 5 .

[0037] like Figure 3 As shown, when the sealing ring 5 is deformed by force, the part in contact with the outer ring body 2 will be tighter, but a gap will be generated in the part in contact with the inner ring body 1, which will cause water and some impurities to enter the bearing through the gap and affect the bearing accuracy.

[0038] A push rod 62 is hinged between the connecting rods 61 and the connecting rods 61, so that when the sealing ring 5 is deformed by force, the connecting rod 61 inside the sealing ring 5 moves, thereby driving the push rod 62 to move toward the inner ring. An arc plate 63 is hinged at one end of the push rod 62, and the arc plate 63 pushes and squeezes the inner ring of the sealing ring 5 under the push of the push rod 62, so that the gap between the contact part of the sealing ring 5 and the inner ring body 1 is eliminated, thereby improving the sealing effect of the sealing ring 5;

[0039] The force direction of the sealing ring 5 is not fixed, and the deformed part will also change. By evenly arranging the arc plates 63, the inner ring part of the sealing ring 5 can be pushed and squeezed in all directions to adapt to the change of the gap position; and the support effect of the sealing ring 5 is further improved by setting the push rod 62 and the arc plate 63.

[0040] As a specific implementation of the present invention, the tip portions of the connecting rod 61, the push rod 62 and the arc plate 63 are rounded.

[0041] By rounding the tip of the connecting rod 61 , the push rod 62 and the arc plate 63 , it is prevented that the tip of the connecting rod 61 , the push rod 62 and the arc plate 63 will cause damage to the sealing ring 5 when the sealing ring 5 is subjected to force.

[0042] As a specific implementation of the present invention, protrusions 51 are provided on both inner and outer sides of the sealing ring 5 .

[0043] By providing protrusions 51 on both the inner and outer sides of the sealing ring 5, on the one hand, the sealing ring 5 is further fixed between the inner ring body 1 and the outer ring body 2, and on the other hand, the contact area between the sealing ring 5 and the inner ring body 1 and the outer ring body 2 is increased to achieve a better sealing effect.

[0044] As a specific embodiment of the present invention, the contact portion between the sealing ring 5 and the inner ring body 1 and the outer ring body 2 is provided with a bw type rubber 52 .

[0045] The BW type rubber 52 is a rubber that swells when in contact with water. The BW type rubber 52 is fixedly connected to the contact portion between the sealing ring 5 and the inner ring body 1 and the outer ring body 2. If water penetrates into the contact portion between the sealing ring 5 and the inner ring body 1 and the outer ring body 2, the BW type rubber 52 expands, making the sealing ring 5 in closer contact with the inner ring body 1 and the outer ring body 2, thereby preventing further water penetration.

[0046] As a specific embodiment of the present invention, the contact portion between the sealing ring 5 and the retaining frame 4 is set as a hollow structure, and grease is placed in the hollow interior.

[0047] As a specific embodiment of the present invention, the lubricating grease is a waterproof lubricating grease.

[0048] Grease is placed in the hollow interior of the sealing ring 5, so that when the sealing ring 5 is squeezed, the grease placed in the hollow interior of the sealing ring 5 will be squeezed out to lubricate the rolling element 3, thereby reducing the wear of the rolling element 3 and increasing the service life of the bearing.

[0049] The lubricating grease is a waterproof lubricating grease, such as a general lithium-based grease, so that the lubricating grease will not be affected by water, further improving the waterproof performance of the present invention.

[0050] The specific workflow is as follows:

[0051] During the use of the bearing, the sealing ring 5 arranged between the inner ring body 1 and the outer ring body 2 will be subjected to stress for a long time. In some special environments, such as on a bicycle tire, the magnitude and direction of the stress on the bearing are variable, which will cause damage to the sealing ring 5, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring 5, causing some water or debris to enter the interior of the bearing, resulting in reduced wear accuracy inside the bearing. The present invention provides a support assembly 6 in the sealing ring 5 to support and share the stress of the sealing ring 5, thereby preventing the sealing ring 5 from being permanently deformed due to long-term stress and affecting the sealing effect.

[0052] The support assembly 6 includes at least three connecting rods 61, which are hinged and finally closed into a ring. This allows the support assembly 6 to adapt to the deformation of the sealing ring 5 and to provide an all-round support effect on the sealing ring 5 when the force direction of the sealing ring 5 changes. By hingedly connecting the connecting rods 61 into a ring, the force at the stress point is shared by multiple connecting rods 61, making the force more uniform and the support more firm.

[0053] like Figure 3 As shown, when the sealing ring 5 is deformed by force, the part in contact with the outer ring body 2 will be tighter, but a gap will be generated in the part in contact with the inner ring body 1, which will cause water and some impurities to enter the bearing through the gap and affect the bearing accuracy.

[0054] A push rod 62 is hinged between the connecting rods 61 and the connecting rods 61, so that when the sealing ring 5 is deformed by force, the connecting rod 61 inside the sealing ring 5 moves, thereby driving the push rod 62 to move toward the inner ring. An arc plate 63 is hinged at one end of the push rod 62, and the arc plate 63 pushes and squeezes the inner ring of the sealing ring 5 under the push of the push rod 62, so that the gap between the contact part of the sealing ring 5 and the inner ring body 1 is eliminated, thereby improving the sealing effect of the sealing ring 5;

[0055] The force direction of the sealing ring 5 is not fixed, and the deformed part will also change. By evenly arranging the arc plates 63, the inner ring part of the sealing ring 5 can be pushed and squeezed in all directions to adapt to the change of the gap position; and the support effect of the sealing ring 5 is further improved by setting the push rod 62 and the arc plate 63.

[0056] By rounding the tip of the connecting rod 61 , the push rod 62 and the arc plate 63 , it is prevented that the tip of the connecting rod 61 , the push rod 62 and the arc plate 63 will cause damage to the sealing ring 5 when the sealing ring 5 is subjected to force.

[0057] By providing protrusions 51 on both the inner and outer sides of the sealing ring 5, on the one hand, the sealing ring 5 is further fixed between the inner ring body 1 and the outer ring body 2, and on the other hand, the contact area between the sealing ring 5 and the inner ring body 1 and the outer ring body 2 is increased to achieve a better sealing effect.

[0058] The BW type rubber 52 is a rubber that swells when in contact with water. The BW type rubber 52 is fixedly connected to the contact portion between the sealing ring 5 and the inner ring body 1 and the outer ring body 2. If water penetrates into the contact portion between the sealing ring 5 and the inner ring body 1 and the outer ring body 2, the BW type rubber 52 expands, making the sealing ring 5 in closer contact with the inner ring body 1 and the outer ring body 2, thereby preventing further water penetration.

[0059] Grease is placed in the hollow interior of the sealing ring 5, so that when the sealing ring 5 is squeezed, the grease placed in the hollow interior of the sealing ring 5 will be squeezed out to lubricate the rolling element 3, thereby reducing the wear of the rolling element 3 and increasing the service life of the bearing.

[0060] The lubricating grease is a waterproof lubricating grease, such as a general lithium-based grease, so that the lubricating grease will not be affected by water, further improving the waterproof performance of the present invention.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waterproof bearing, comprising an inner ring body (1), an outer ring body (2), rolling elements (3) and a retaining frame (4), wherein a retaining frame (4) is provided between the outer ring body (2) and the inner ring body (1), and a plurality of rolling elements (3) are evenly arranged on the retaining frame (4) along the circumferential direction; characterized in that: Also includes: A sealing ring (5), wherein the sealing ring (5) is arranged between an inner ring body (1) and an outer ring body (2); a support assembly (6) is arranged inside the sealing ring (5), and the support assembly (6) is arranged inside the sealing ring (5) so as to support and share stress on the sealing ring (5), thereby preventing the sealing ring (5) from being permanently deformed and reducing the sealing effect; The support assembly (6) comprises at least three connecting rods (61), and the connecting rods (61) and the connecting rods (61) are hinged to each other; At least one push rod (62) is hingedly connected between the connecting rods (61); One end of the push rod (62) is hinged with an arc-shaped plate (63); at least one arc-shaped plate (63) is provided and is evenly arranged on the inner circle of the sealing ring (5); The sealing ring (5) is provided with protruding parts (51) on both the inner and outer sides; the contact parts of the sealing ring (5) with the inner ring body (1) and the outer ring body (2) are provided with bw type rubber (52); The contact portion between the sealing ring (5) and the retaining frame (4) is configured as a hollow structure, and lubricating grease is placed inside the hollow structure.

2. A waterproof bearing according to claim 1, characterized in that: The tip portions of the connecting rod (61), the push rod (62) and the arc-shaped plate (63) are rounded.

3. A waterproof bearing according to claim 1, characterized in that: The lubricating grease is a waterproof lubricating grease.

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