Coupling bearing

Abstract

The utility model provides a shaft connecting bearing which comprises an outer ring, a mandrel and a plurality of rollers, a roller path for mounting the rollers is formed between the outer ring and the mandrel, the shaft connecting bearing further comprises a first sealing element and a second sealing element, the first sealing element is clamped on the outer ring and comprises a swing part and an elastic ring, and the swing part is clamped on the elastic ring. A first extending part and a second extending part are formed on the second sealing piece, the second sealing piece is connected to the mandrel in an interference sleeving mode through the second extending part, the first extending part extends in the radial direction and is in clearance fit with the outer ring, and a first sealing part and a second sealing part are arranged on the swing part; the first sealing part and the second sealing part can abut against the first extending part and the second extending part respectively to form sealing fit, the swing part is sleeved with the elastic ring, and the elastic ring can promote the first sealing part to be elastically pressed on the first extending part. Aiming at the defects in the prior art, the utility model provides the bearing with the shaft, which has more sealing effect points, better sealing effect and higher durability.

Description

Technical Field

[0001] The utility model relates to a shaft-connected bearing. Background Art

[0002] The shaft-connected bearing is a bearing commonly used in the cooling system of automobile engines. It is commonly used in coolant circulation positions and fan brackets. The biggest difference between the shaft-connected bearing and the general bearing is that the inner ring is integrated into the core shaft, and a groove is set on the core shaft to form a raceway with the outer ring. The shaft-connected bearing is usually provided with a plurality of rollers, retainers and sealing rings. The plurality of rollers are installed in two rows in the raceway, and a plurality of rollers are also provided with retainers for forming intervals and guides between the rollers. The sealing rings are arranged at both ends of the axial direction of the raceway to prevent external liquid from entering the bearing and affecting the normal operation of the bearing. Specifically, in the vehicle coolant circulation position and fan bracket, one end of the bearing axial direction is facing outward, and the sealing performance requirements on this side are relatively high. The sealing rings in the prior art have fewer sealing points and weaker ability to prevent coolant and water vapor. In addition, during operation, the sealing effect will be further reduced due to the wear of the sealing rings, so improvement and optimization are needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a shaft-connected bearing which has more sealing effect points, better sealing effect and is more durable.

[0004] To achieve the above-mentioned purpose, the utility model provides a shaft-connected bearing, comprising an outer ring, a core shaft and a plurality of rollers, a raceway for roller installation is formed between the outer ring and the core shaft, and also comprising a first seal and a second seal, the first seal is clamped on the outer ring, the first seal comprises a swinging portion and an elastic ring, the cross-section of the second seal is L-shaped and is formed with a first extension portion and a second extension portion, the second extension portion extends toward the raceway direction, the second seal is interference-fitted on the core shaft through the second extension portion, the first extension portion extends radially and cooperates with the gap between the outer ring, the first seal portion and the second seal portion are arranged on the swinging portion, the first seal portion and the second seal portion can respectively abut against the first extension portion and the second extension portion to form a sealing fit, the elastic ring is sleeved on the swinging portion, and the elastic ring can cause the first seal portion to be elastically pressed against the first extension portion.

[0005] The advantage of adopting the above technical solution is that by setting the first seal and the second seal, the cross-section of the second seal is L-shaped and forms the first extension part and the second extension part, the first extension part and the second extension part extend toward the raceway and the radial direction respectively, the second extension part forms an interference sleeve with the core shaft, and the first extension part and the outer ring are matched with each other to form a first layer of protection, and then the first seal is clamped on the outer ring and provided with a swing part and an elastic ring, and the first seal part and the second seal part are provided on the swing part, and the first seal part and the second seal part are respectively abutted with the first extension part and the second extension part to form a sealing match to form the second and third layers of protection, with more protection points and better sealing effect, and finally the elastic ring is mounted on the swing part, and the elastic force of the elastic ring is used to press the first seal part against the first extension part, and after wear, the elastic ring can cause the swing amplitude of the swing part to change, ensure interference, continue to ensure the sealing effect, and make the product more durable.

[0006] The utility model can be further configured as follows: a frame and a connecting portion are arranged on the first sealing member, the frame is extended toward the core axis, and the connecting portion is formed by gradually extending the swinging portion and connected to the frame.

[0007] Through further configuration, a framework and a connecting portion are provided on the first sealing member, and the connecting portion is gradually extended from the swinging portion and connected to the framework for shaping, thereby ensuring that under the action of the elastic ring, the deformation position of the first sealing member is at the connecting portion.

[0008] The utility model can be further configured as follows: the first sealing portion extends obliquely in a direction away from the core shaft, the first sealing portion is provided with a first sealing lip and a second sealing lip, and the first sealing lip and the second sealing lip are both abutted against the first extension portion and are spaced apart.

[0009] Through further configuration, the first sealing portion is allowed to extend obliquely in a direction away from the core shaft. This allows the first sealing portion to increase its axial length under the action of the elastic force of the elastic ring, thereby increasing the interference between it and the first extending portion. A first sealing lip and a second sealing lip are provided on the first sealing portion to be spaced apart and abut against the first extending portion. The sealing effect is enhanced by the abutment of the first sealing lip and the second sealing lip.

[0010] The utility model can be further configured as follows: the second sealing portion includes a third sealing lip and a fourth sealing lip which are successively arranged in a direction away from the raceway, and the third sealing lip and the fourth sealing lip extend obliquely in a direction approaching and away from the raceway respectively, and both abut and cooperate with the second extension portion.

[0011] Through further configuration, a third sealing lip and a fourth sealing lip are successively arranged on the second sealing portion in a direction away from the raceway, and the third sealing lip and the fourth sealing lip are respectively extended obliquely in the directions approaching and away from the raceway and then abutted against the second extending portion to enhance the sealing effect, and as the first sealing lip and the second sealing lip on the first sealing portion are worn, the second sealing portion can gradually move downward to increase the interference between the third sealing lip, the fourth sealing lip and the second extending portion, thereby continuing to ensure the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0013] Figure 2 For the utility model embodiment Figure 1 Enlarged view of part a;

[0014] Figure 3 For the utility model embodiment Figure 1 Enlarged view of part b;

[0015] Among them: outer ring 1; core shaft 2; roller 3; first seal 4; swing part 41; first seal part 411; first sealing lip 4111; second sealing lip 4112; second seal part 412; third sealing lip 4121; fourth sealing lip 4122; elastic ring 42; skeleton 43; connecting part 44; second seal 5; first extension part 51; second extension part 52. DETAILED DESCRIPTION

[0016] The utility model is a shaft-connected bearing. Figure 1-3 As shown: it includes an outer ring 1, a core shaft 2 and a plurality of rollers 3, a raceway for roller installation is formed between the outer ring 1 and the core shaft 2, and also includes a first seal 4 and a second seal 5, the first seal 4 is clamped on the outer ring, the first seal 4 includes a swinging portion 41 and an elastic ring 42, the cross-section of the second seal 5 is L-shaped and is formed with a first extension portion 51 and a second extension portion 52, the second extension portion 52 extends toward the raceway direction, the second seal 5 is interference-fitted on the core shaft 2 through the second extension portion 52, the first extension portion 51 extends radially and is gap-matched with the outer ring 1, the swinging portion 41 is provided with a first seal 411 and a second seal 412, the first seal 411 and the second seal 412 can respectively abut against the first extension portion 51 and the second extension portion 52 to form a sealing fit, the elastic ring 42 is sleeved on the swinging portion 41, and the elastic ring 42 can cause the first seal 411 to be elastically pressed against the first extension portion 51.

[0017] The first sealing member 4 is provided with a frame 43 and a connecting portion 44 . The frame 43 is extended toward the core shaft 2 . The connecting portion 44 is formed by gradually extending the swinging portion 41 and connected to the frame 43 .

[0018] The first sealing portion 411 extends obliquely in a direction away from the core shaft 2 , and is provided with a first sealing lip 4111 and a second sealing lip 4112 , which are both in contact with the first extending portion 51 and spaced apart.

[0019] The second sealing portion 412 includes a third sealing lip 4121 and a fourth sealing lip 4122 which are successively arranged in a direction away from the raceway. The third sealing lip 4121 and the fourth sealing lip 4122 extend obliquely toward and away from the raceway respectively, and both abut against the second extension portion 52 .

[0020] The above example is only one preferred specific example of the present invention. The common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A shaft-connected bearing, comprising an outer ring, a core shaft and a plurality of rollers, wherein a raceway for the rollers to be installed is formed between the outer ring and the core shaft. Features: It includes a first seal and a second seal, the first seal is clamped on the outer ring, the first seal includes a swinging part and an elastic ring, the cross-section of the second seal is L-shaped and is formed with a first extension part and a second extension part, the second extension part extends toward the raceway, the second seal is interference-fitted on the core shaft through the second extension part, the first extension part extends radially and fits with the gap between the outer ring, the first seal part and the second seal part are arranged on the swinging part, the first seal part and the second seal part can respectively abut with the first extension part and the second extension part to form a sealing fit, the elastic ring is sleeved on the swinging part, and the elastic ring can cause the first seal part to be elastically pressed against the first extension part.

2. The shaft-connected bearing according to claim 1, Features: The first sealing member is provided with a frame and a connecting portion. The frame is extended toward the core axis, and the connecting portion is formed by gradually extending the swinging portion and connected to the frame.

3. The shaft-connected bearing according to claim 1 or 2, Features: The first sealing portion extends obliquely in a direction away from the core shaft. The first sealing portion is provided with a first sealing lip and a second sealing lip. The first sealing lip and the second sealing lip are both in contact with the first extending portion and are spaced apart.

4. The shaft-connected bearing according to claim 1 or 2, Features: The second sealing portion includes a third sealing lip and a fourth sealing lip which are successively arranged in a direction away from the raceway. The third sealing lip and the fourth sealing lip extend obliquely in a direction approaching and away from the raceway respectively, and both abut against the second extending portion.

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