A multi-sealed flange bearing

Abstract

The present invention relates to a multi-sealed flange bearing, comprising an outer ring, an inner ring, a rolling element, a retaining frame and a bearing sealing ring, wherein the bearing sealing ring is located between the outer ring and the inner ring to form a sealing portion for sealing the outer ring and the inner ring, and the bearing sealing ring comprises a first bearing sealing ring and a second bearing sealing ring, wherein the first bearing sealing ring is arranged at an upper opening between the outer ring and the inner ring to form a first sealing portion, and the second bearing sealing ring is arranged at a lower opening between the outer ring and the inner ring to form a second sealing portion, and an upwardly tilted sealing lip is arranged on the outer side surface of the first bearing sealing ring, and the sealing lip can cooperate with the side connecting member to form an axial third sealing portion for sealing the side outer ring and the inner ring. The multi-sealed flange bearing of the present invention is provided with four seals, which can better ensure the internal cleanliness of the bearing in the application conditions, maintain good transmission efficiency, have strong corrosion resistance, and improve the service life of the bearing.

Description

Technical Field

[0001] The invention relates to a bearing, in particular to a multi-sealed flange bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. If water, impurities, etc. enter the interior of the bearing, it will corrode the bearing and directly affect the performance of the bearing. In order to ensure the sealing inside the bearing, a bearing seal ring is usually used to seal the bearing.

[0003] However, for some equipment that has higher requirements on bearing sealing, such as high-end racing bicycles, the bearing at the connection between the crankshaft and the workshop of the bicycle plays a role in driving transmission. This position has higher requirements on the transmission efficiency of the bearing, so the sealing and corrosion resistance functions of this part are higher. However, relying solely on the existing bearing sealing ring cannot achieve a high sealing performance. Summary of the invention

[0004] The present invention designs a multi-sealed flange bearing, which solves the technical problem that for some equipments with high requirements on bearing sealing performance, the existing bearing sealing rings cannot achieve high sealing performance.

[0005] In order to solve the above-mentioned technical problems, the present invention adopts the following solutions:

[0006] A multi-sealed flange bearing comprises an outer ring (1), an inner ring (2), rolling elements, a retaining frame and a bearing sealing ring.

[0007] The bearing sealing ring is located between the outer ring (1) and the inner ring (2) to form a sealing portion for sealing between the outer ring (1) and the inner ring (2).

[0008] The bearing sealing ring comprises a first bearing sealing ring (3) and a second bearing sealing ring (4), wherein the first bearing sealing ring (3) is arranged at the upper opening between the outer ring (1) and the inner ring (2) to form a first sealing portion, and the second bearing sealing ring (4) is arranged at the lower opening between the outer ring (1) and the inner ring (2) to form a second sealing portion, and is characterized in that: an upwardly raised sealing lip (31) is arranged on the outer side surface of the first bearing sealing ring (3), and the sealing lip (31) can cooperate with the side connecting piece to form an axial third sealing portion for sealing between the outer ring (1) and the inner ring (2) on this side.

[0009] Furthermore, the sealing lip (31) includes a connecting portion and an extending portion, wherein the connecting portion is connected to one end of the outer side surface of the first bearing sealing ring (3) close to the inner ring and extends outward and upward to form an extending portion, and an angle is formed between the extending portion and the first bearing sealing ring (3), and the extending portion can cooperate with the side connecting piece to play the role of axial sealing of the bearing end face.

[0010] Furthermore, one axial end of the outer ring (1) is a flange end (11), and the outer side wall of the flange end (11) is concave to form an O-type sealing groove (12) for installing an O-type sealing ring (7), and the O-type sealing groove (12) cooperates with the O-type sealing ring (7) and other connecting parts at this position to form a fourth sealing part for sealing the outer side surface of the outer ring (1).

[0011] Furthermore, the first bearing sealing ring (3) and the flange end (11) are on the same side.

[0012] Furthermore, the other axial end of the outer ring (1) extends to form a sealing ring (13), and the inner side surface of the sealing ring (13) cooperates with other connecting parts and other sealing rings at this position to form a radial fifth sealing portion for sealing the end of the bearing on this side.

[0013] Furthermore, a guide chamfer (14) is provided at one end of the sealing ring (13) away from the inner ring (2) to facilitate guiding other parts at this position to be installed with the sealing ring (14) so ​​as to improve the stability of the bearing installation.

[0014] Furthermore, the surface layer of the outer ring (1) is a corrosion-resistant zinc-nickel plating layer.

[0015] Furthermore, the first bearing seal ring (3) is a standard contact seal ring; and / or the second bearing seal ring (4) is a light contact seal ring.

[0016] Furthermore, the rolling body is a steel ball (5); and / or the retaining frame is a nylon retaining frame (6).

[0017] Furthermore, L-shaped support frames are provided inside the first bearing sealing ring (3) and the second bearing sealing ring (4) to improve the structural stability of the first bearing sealing ring (3) and the second bearing sealing ring (4).

[0018] The multi-sealed flange bearing has the following beneficial effects:

[0019] (1) The multi-sealed flange bearing of the present invention has a five-layer sealing effect, which enhances the sealing performance of the bearing, can better ensure the cleanliness of the inside of the bearing in the application conditions, and enables the bearing to maintain good transmission efficiency.

[0020] (2) The multi-sealed flange bearing of the present invention is provided with a guide chamfer, which can improve the stability of the bearing installation.

[0021] (3) The outer ring surface of the multi-sealed flange bearing of the present invention is a zinc-nickel plating layer, which can enhance the corrosion resistance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 : An exploded schematic diagram of the multi-sealed flange bearing of the present invention;

[0023] Figure 2 : A schematic longitudinal section of a multi-sealed flange bearing according to the present invention.

[0024] Description of reference numerals:

[0025] 1-outer ring; 11-flange end; 12-O-type sealing groove; 13-sealing retaining ring; 14-guide chamfer; 2-inner ring; 3-first bearing sealing ring; 31-sealing lip; 4-second bearing sealing ring; 5-steel ball; 6-nylon retainer; 7-O-type sealing ring. DETAILED DESCRIPTION

[0026] Combine the following Figure 1 and Figure 2 , the present invention is further described:

[0027] like Figure 1 and Figure 2 As shown, a multi-sealed flange bearing comprises an outer ring 1, an inner ring 2, a steel ball 5, a nylon retainer 6, a first bearing sealing ring 3, and a second bearing sealing ring 4. The first bearing sealing ring 3 is arranged at the upper opening between the outer ring 1 and the inner ring 2 to form a first sealing portion, and the second bearing sealing ring 4 is arranged at the lower opening between the outer ring 1 and the inner ring 2 to form a second sealing portion. An upwardly raised sealing lip 31 is arranged on the outer side surface of the first bearing sealing ring 3, and the sealing lip 31 can cooperate with the side connecting piece to form an axial third sealing portion for sealing the outer ring 1 and the inner ring 2 on this side.

[0028] The sealing lip 31 includes a connecting portion and an extending portion. The connecting portion is connected to one end of the outer side surface of the first bearing sealing ring 3 close to the inner ring and extends outward and upward to form an extending portion. An angle is formed between the extending portion and the first bearing sealing ring 3. The extending portion can cooperate with the side connecting piece to play the role of axial sealing of the bearing end face.

[0029] The end of the outer ring 1 on the same axial side as the first bearing sealing ring 3 is a flange end 11, and the outer side wall of the flange end 11 is concave to form an O-type sealing groove 12 for installing the O-type sealing ring 7. The O-type sealing groove 12 cooperates with the O-type sealing ring 7 and other connecting parts at this position to form a fourth sealing part for sealing the outer side surface of the outer ring 1.

[0030] The other axial end of the outer ring 1 extends to form a sealing ring 13, and the inner side of the sealing ring 13 cooperates with other connectors and other sealing rings at this position to form a radial fifth sealing portion for sealing the end of the bearing on this side. The end of the sealing ring 13 away from the inner ring 2 is provided with a guide chamfer 14 to facilitate the installation of other parts at this position and the sealing ring 14 to improve the stability of the bearing installation.

[0031] The surface layer of the outer ring 1 is a corrosion-resistant zinc-nickel coating. The first bearing seal ring 3 is a standard contact seal ring; the second bearing seal ring 4 is a light contact seal ring.

[0032] L-shaped support frames are arranged inside the first bearing sealing ring 3 and the second bearing sealing ring 4 to improve the structural stability of the first bearing sealing ring 3 and the second bearing sealing ring 4 .

[0033] The first bearing sealing ring 3 and the second bearing sealing ring 4 are both annular rings, and both ends of the annular rings are provided with curling edges. The inner side surface of the outer ring 1 and the outer side surface of the inner ring 2 are both provided with sealing grooves, and the curling edges of the first bearing sealing ring 3 and the second bearing sealing ring 4 are clamped with the sealing grooves.

[0034] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A multi-sealed flange bearing, comprising an outer ring (1), an inner ring (2), rolling elements, a retaining frame and a bearing sealing ring, wherein the bearing sealing ring is located between the outer ring (1) and the inner ring (2) to form a sealing portion for sealing the outer ring (1) and the inner ring (2), the bearing sealing ring comprises a first bearing sealing ring (3) and a second bearing sealing ring (4), the first bearing sealing ring (3) being arranged at an upper opening between the outer ring (1) and the inner ring (2) to form a first sealing portion, and the second bearing sealing ring (4) being arranged at a lower opening between the outer ring (1) and the inner ring (2) to form a second sealing portion, characterized in that: The outer side surface of the first bearing sealing ring (3) is provided with an upwardly raised sealing lip (31), and the sealing lip (31) can cooperate with the connecting piece on the side of the sealing lip (31) to form an axial third sealing portion for sealing between the outer ring (1) and the inner ring (2) on this side; the sealing lip (31) includes a connecting portion and a protruding portion, and the connecting portion is connected to an end of the outer side surface of the first bearing sealing ring (3) close to the inner ring and extends outwardly and upwardly to form a protruding portion, and an angle is formed between the protruding portion and the first bearing sealing ring (3), and the protruding portion can cooperate with the connecting piece on this side to play the role of axial sealing of the bearing end face; one axial end of the outer ring (1) is a French The flange end (11) has an outer wall which is concave to form an O-shaped sealing groove (12) for installing an O-shaped sealing ring (7), and the O-shaped sealing groove (12) cooperates with the O-shaped sealing ring (7) and a connecting piece at the position of the O-shaped sealing ring (7) to form a fourth sealing portion for sealing the outer side surface of the outer ring (1); the first bearing sealing ring (3) and the flange end (11) are on the same side; the other axial end of the outer ring (1) extends to form a sealing retaining ring (13), and the inner side surface of the sealing retaining ring (13) cooperates with the connecting piece at the position of the sealing retaining ring (13) and other sealing rings to form a radial fifth sealing portion for sealing the end of the bearing on this side.

2. The multi-sealed flange bearing according to claim 1, characterized in that: A guide chamfer (14) is provided at one end of the sealing ring (13) away from the inner ring (2), so as to facilitate the installation of parts at the position of the guide chamfer (14) and the sealing ring (13) to improve the stability of the bearing installation.

3. The multi-sealed flange bearing according to claim 1 or 2, characterized in that: The surface layer of the outer ring (1) is a corrosion-resistant zinc-nickel plating layer.

4. The multi-sealed flange bearing according to claim 3, characterized in that: The first bearing seal ring (3) is a standard contact seal ring; and / or the second bearing seal ring (4) is a light contact seal ring.

5. The multi-sealed flange bearing according to claim 4, characterized in that: The rolling body is a steel ball (5); and / or the retaining frame is a nylon retaining frame (6).

6. The multi-sealed flange bearing according to claim 5, characterized in that: L-shaped support frames are arranged inside the first bearing sealing ring (3) and the second bearing sealing ring (4) to improve the structural stability of the first bearing sealing ring (3) and the second bearing sealing ring (4).

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