Dustproof needle bearing

Abstract

The utility model discloses a dustproof needle bearing, which relates to the technical field of bearings, and is characterized in that a dustproof component is clamped in an outer ring cover, is used for preventing dust from entering a bearing, and comprises a dustproof gasket; an anti-friction part used for reducing connection friction between the dustproof assembly and the bearing is arranged at the joint of the dustproof gasket and the bearing inner ring and comprises a rotating ring, the rotating ring is arranged below the dustproof gasket, rotating grooves are formed in the upper end and the lower end of the bearing inner ring, and the rotating ring corresponds to the rotating grooves in position. N rotating balls are arranged in the rotating groove, the rotating ring is inserted into the rotating groove, and the bottom of the rotating ring makes contact with the rotating balls to complete the rotating action, so that sliding friction between the rotating ring and the rotating groove is replaced with rolling friction, and the friction force between the rotating ring and the rotating groove is reduced; the rotating resistance of the inner ring and the outer ring during working of the bearing body is reduced, and the production quality of the bearing body is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and more specifically, to a dustproof needle roller bearing. Background Art

[0002] Needle roller bearings are a type of roller bearing with cylindrical rollers, which are characterized by thin and long rollers. This structure enables needle roller bearings to perform well in applications with high speed and high precision requirements. The rollers of needle roller bearings are slender in shape, which enables them to provide a larger contact area when under load, thereby reducing local pressure and improving load-bearing capacity.

[0003] According to the "dust-proof needle roller bearing" applied for by the Chinese patent "CN218582072U", it includes a bearing outer ring, the bearing outer ring includes a bearing outer ring ring and a needle roller, the needle roller is embedded on the inner side of the bearing outer ring ring, and can cover the gap between the bearing outer ring and the bearing inner ring, thereby preventing dust from entering the bearing through the gap between the bearing outer ring and the bearing inner ring.

[0004] However, in actual use, since the inner ring of the bearing and the dustproof component move relative to each other during operation, friction will be generated at the connection between the dustproof component and the bearing in the above-mentioned dustproof needle roller bearing when the bearing is working. There is no specific structure to help reduce friction between the dustproof component and the bearing during operation, resulting in a large internal and external rotation resistance of the bearing body during operation, affecting the working quality of the bearing body during operation.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a dustproof needle roller bearing. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a dustproof needle roller bearing.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof needle roller bearing, comprising a support frame, N bearing needle rollers arranged in an array on the circumference of the support frame, a bearing outer ring located on the outside of the support frame, and a bearing inner ring located on the inside of the support frame, the upper and lower ends of the bearing outer ring are provided with outer ring covers, the interior of the outer ring cover is clamped with a dustproof component, the dustproof component is used to prevent dust from entering the interior of the bearing, the dustproof component comprises a dustproof gasket, the lower end of the dustproof gasket is symmetrically provided with a group of elastic clamping plates, the interior of the outer ring cover is symmetrically provided with a group of clamping grooves, the elastic clamping plates are clamped in the interior of the clamping grooves to complete the installation of the dustproof gasket, and the connection between the dustproof gasket and the bearing inner ring is provided with a friction reducing component for reducing the connection friction between the dustproof component and the bearing.

[0008] Preferably, the friction-reducing component includes a rotating ring, which is arranged below the dustproof gasket. Rotating grooves are provided at the upper and lower ends of the inner ring of the bearing. The rotating ring corresponds to the position of the rotating groove. N rotating balls are provided inside the rotating groove. The rotating ring is inserted into the rotating groove, and the bottom of the rotating ring contacts the rotating balls to complete the rotation action.

[0009] Preferably, the elastic card plate has a certain elasticity, and a card block is provided on the outer side of the elastic card plate.

[0010] Preferably, the side surface of the block is triangular, and the end has a certain curvature.

[0011] Preferably, the groove wall of the rotating groove close to the bearing needle roller side is provided with N oil ports, and the lubricating oil inside the bearing can enter the rotating groove for lubrication through the oil ports.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, when the dustproof gasket is clamped on the outer ring cover, the rotating ring at the bottom of the dustproof gasket is also clamped inside the rotating groove. When the bearing body starts to work, the inner ring and the outer ring of the bearing will rotate relatively, and the rotating ball at the bottom of the rotating ring will also rotate when the rotating ring and the rotating groove move relatively, thereby using rolling friction to replace the sliding friction between the rotating ring and the rotating groove, reducing the friction between the two, reducing the rotation resistance of the inner and outer rings of the bearing body when it is working, and also improving the production quality of the bearing body.

[0014] 2. In the utility model, when installing the dustproof gasket, the staff only needs to align the card block with the position of the card slot and squeeze the dustproof gasket from top to bottom. Since the side of the card block is triangular and the end has a certain curvature, the card block will squeeze the elastic card plate inward when contacting the edge of the outer ring cover, and the elastic card plate will shrink inward due to the extrusion force until the card block contacts the card slot, the extrusion force disappears, and the card block is stuck in the card slot. When the dustproof gasket needs to be removed, the staff uses a screwdriver to lift the connection between the dustproof gasket and the inner ring of the bearing. According to the same installation principle, the card block can be detached from the inside of the card slot, and the dustproof gasket can be quickly removed, thereby improving the user experience and having better practicality.

[0015] 3. In the utility model, the lubricating oil inside the bearing body enters the interior of the rotating groove through the oil port to lubricate the rotating balls and the rotating ring. On the one hand, the service life of the rotating balls inside the bearing body is extended, and on the other hand, the friction between the rotating ring and the rotating balls is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the dustproof gasket in the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 It is a partial structural schematic diagram of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the bearing needle roller in the utility model;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle.

[0023] 1. Support frame; 2. Bearing needle roller; 3. Bearing outer ring; 4. Bearing inner ring; 5. Outer ring cover; 6. Dustproof assembly; 601. Dustproof gasket; 602. Elastic clamping plate; 603. Clamping groove; 604. Rotating ring; 605. Rotating groove; 606. Rotating ball; 607. Oil port; 608. Clamping block. DETAILED DESCRIPTION

[0024] like Figure 1-6 As shown, the utility model provides a dustproof needle roller bearing, comprising a support frame 1, N bearing needle rollers 2 arranged in an array on the circumference of the support frame 1, a bearing outer ring 3 located outside the support frame 1, and a bearing inner ring 4 located inside the support frame 1, and outer ring covers 5 are provided at both upper and lower ends of the bearing outer ring 3;

[0025] The inner part of the outer ring cover 5 is clamped with a dustproof component 6, which is used to prevent dust from entering the inner part of the bearing. The dustproof component 6 includes a dustproof gasket 601, and a group of elastic clamping plates 602 are symmetrically arranged at the lower end of the dustproof gasket 601. The elastic clamping plates 602 have a certain elasticity, and a clamping block 608 is arranged on the outer side of the elastic clamping plate. The side of the clamping block 608 is triangular, and the end has a certain curvature. A group of clamping grooves 603 are symmetrically arranged inside the outer ring cover 5, and the installation action of the dustproof gasket 601 is completed by clamping the elastic clamping plates 602 inside the clamping grooves 603;

[0026] When installing the dustproof gasket 601, the staff only needs to align the block 608 with the position of the slot 603 and squeeze the dustproof gasket 601 from top to bottom. Since the side of the block 608 is triangular and the end has a certain curvature, the block 608 will squeeze the elastic card plate 602 inward when it contacts the edge of the outer ring cover 5. The elastic card plate 602 shrinks inward due to the squeezing force until the block 608 contacts the slot 603, the squeezing force disappears, and the block 608 is stuck in the slot 603. When the dustproof gasket 601 needs to be removed, the staff uses a screwdriver to lift the dustproof gasket 601 at the connection point of the bearing inner ring 4. According to the same installation principle, the block 608 can be detached from the inside of the slot 603, and the dustproof gasket 601 can be quickly removed.

[0027] A friction reducing component for reducing the connection friction between the dustproof component 6 and the bearing is provided at the connection between the dustproof gasket 601 and the bearing inner ring 4. The friction reducing component includes a rotating ring 604, which is arranged below the dustproof gasket 601. The upper and lower ends of the bearing inner ring 4 are provided with rotating grooves 605. The rotating ring 604 corresponds to the rotating groove 605 in position. N rotating balls 606 are provided inside the rotating groove 605. The rotating ring 604 is inserted into the rotating groove 605. The bottom of the rotating ring 604 contacts the rotating balls 606 to complete the rotating action. The groove wall of the rotating groove 605 close to the bearing needle roller 2 is provided with N oil ports 607. The lubricating oil inside the bearing can enter the rotating groove 605 for lubrication through the oil ports 607.

[0028] When the dustproof gasket 601 is clamped on the outer ring cover 5, the rotating ring 604 at the bottom of the dustproof gasket 601 is also clamped inside the rotating groove 605. When the bearing body starts to work, the inner ring 4 and the outer ring of the bearing will rotate relatively. The rotating ball 606 at the bottom of the rotating ring 604 also rotates when the rotating ring 604 and the rotating groove 605 move relatively. Therefore, the sliding friction between the rotating ring 604 and the rotating groove 605 is replaced by rolling friction, which reduces the friction between the two, reduces the rotation resistance of the inner and outer rings of the bearing body when it is working, and also improves the production quality of the bearing body.

[0029] The lubricating oil inside the bearing body enters the rotating groove 605 through the oil port 607 to lubricate the rotating ball 606 and the rotating ring 604, which on the one hand prolongs the service life of the rotating ball 606 inside the bearing body, and on the other hand further reduces the friction between the rotating ring 604 and the rotating ball 606.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A dustproof needle roller bearing, comprising a support frame (1), N bearing needle rollers (2) arranged in an array on the circumference of the support frame (1), a bearing outer ring (3) located outside the support frame (1), and a bearing inner ring (4) located inside the support frame (1), characterized in that The upper and lower ends of the outer ring (3) of the bearing are both provided with an outer ring cover (5), and the inner part of the outer ring cover (5) is clamped with a dustproof component (6), and the dustproof component (6) is used to prevent dust from entering the inner part of the bearing. The dustproof component (6) includes a dustproof gasket (601), and a group of elastic clamping plates (602) are symmetrically arranged at the lower end of the dustproof gasket (601), and a group of clamping grooves (603) are symmetrically arranged inside the outer ring cover (5), and the elastic clamping plates (602) are clamped inside the clamping grooves (603) to complete the installation of the dustproof gasket (601), and a friction reducing component for reducing the connection friction between the dustproof component (6) and the bearing is provided at the connection between the dustproof gasket (601) and the inner ring (4) of the bearing.

2. A dustproof needle roller bearing according to claim 1, characterized in that The friction reducing component comprises a rotating ring (604), wherein the rotating ring (604) is arranged below the dustproof gasket (601), the upper and lower ends of the bearing inner ring (4) are provided with rotating grooves (605), the rotating ring (604) corresponds to the rotating groove (605), N rotating balls (606) are arranged inside the rotating groove (605), the rotating ring (604) is inserted into the rotating groove (605), and the bottom of the rotating ring (604) contacts the rotating balls (606) to complete the rotating action.

3. A dustproof needle roller bearing according to claim 1, characterized in that The elastic card plate (602) has a certain elasticity, and a card block (608) is provided on the outer side of the elastic card plate (602).

4. A dustproof needle roller bearing according to claim 3, characterized in that The side surface of the block (608) is triangular, and the end has a certain curvature.

5. A dustproof needle roller bearing according to claim 2, characterized in that The groove wall of the rotating groove (605) close to the bearing needle (2) is provided with N oil ports (607), and the lubricating oil inside the bearing can enter the rotating groove (605) through the oil ports (607) for lubrication.

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