CN217950995U

CN217950995U - Shaft connecting bearing for automobile fan

Info

Publication number: CN217950995U
Application number: CN202222362213.1U
Authority: CN
Inventors: 王新豪
Original assignee: Jiangsu Rongtianle Machinery Co ltd
Current assignee: Jiangsu Rongtianle Machinery Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-12-02
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses a car is bearing even for fan shaft, establish the outer lane outside the dabber including dabber and clearance cover, the dabber has seted up the dabber channel for hollow structure and outer wall, the outer lane channel corresponding with the dabber channel has been seted up to the inner wall of outer lane, be equipped with between dabber channel and the outer lane channel and rotate the bearing rolling assembly who sets up around the dabber. The utility model discloses a hollow structure's dabber replaces current solid core structure, reduces the inertia of axle type bearing, increases heat radiating area and passageway for the bearing heat dissipation in save material to prolong the life of axle type bearing, realized cost reduction and efficiency's purpose.

Description

Shaft connecting bearing for automobile fan

Technical Field

The utility model relates to a bearing technical field especially relates to a car is bearing for fan.

Background

In recent years, the market competition is increasingly intensified, and with the higher guaranteed power specified by industries such as automobiles, machinery and the like, how to increase the product competitiveness of enterprises through cost reduction and efficiency enhancement is increasingly important for standing heels in severe market competition. The existing automobile fan bracket bearings are divided into two types, one type is that two sets of conventional single-row bearings are arranged on a shaft, one set is a ball bearing, the other set is a roller bearing, and the structure has complex assembly process and higher cost; the other method is to combine the bearing inner ring and the shaft together, namely, a solid mandrel is adopted, and a channel and a raceway are processed on the outer surface of the mandrel to synthesize the shaft connection bearing. Two current structure car fan class bearings deal with middle-size and small-size car and have satisfied the market and use, consider the cost, the use of shaft coupling bearing is more extensive, and when it met operating modes such as large-scale car or large-scale engineering machine tool, had to guarantee its life through the mode that increases bearing size structure. Checking according to working conditions, adopting the existing shaft connecting bearing for the automobile fan, and continuously increasing the diameter of a mandrel part of the bearing so as to meet the working condition requirement, and simultaneously, because the diameter of the mandrel of the bearing is continuously increased, the weight of the solid mandrel is increased along with the increase of the mandrel, so that the rotary inertia is increased, and the service life of the bearing is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point and provide an automobile fan is with axle shaft bearing, greatly reduced the inertia of bearing, for bearing heat dissipation increase heat radiating area and passageway in save material, prolonged the life of bearing, really realized cost reduction and efficiency's purpose.

Realize the utility model discloses purpose technical scheme is:

the utility model provides an automobile fan is with axle even bearing, includes that dabber and clearance cover establish the outer lane outside the dabber, the dabber has seted up the dabber channel for hollow structure and outer wall, the outer lane channel corresponding with the dabber channel is seted up to the inner wall of outer lane, be equipped with between dabber channel and the outer lane channel around the dabber rotation bearing rolling assembly who sets up.

Furthermore, the bearing rolling assembly comprises a first retainer, a second retainer and a third retainer which are rotatably sleeved outside the mandrel and are distributed at intervals along the axial direction, and a row of first rollers, a row of steel balls and a row of second rollers which are uniformly distributed along the circumferential direction of the mandrel and are respectively embedded on the first retainer, the second retainer and the third retainer.

Furthermore, a four-point contact angle design is adopted among the steel balls, the mandrel channel and the outer ring channel.

Further, the angle of the contact angle is 17-45 degrees.

Further, the first retainer, the second retainer and the third retainer are all made of nylon material.

Further, the first rollers and the second rollers are the same in structure and number and are symmetrically distributed on two sides of the steel ball.

Further, the first roller and the second roller are different in structure and number and are asymmetrically distributed on two sides of the steel ball.

Furthermore, two ends of the bearing rolling assembly are provided with sealing rings which are arranged between the mandrel and the outer ring in an interference manner, a closed space is formed among the sealing rings, the mandrel and the outer ring, and lubricating grease is filled in a gap between the bearing rolling assembly and the closed space.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

(1) The utility model discloses the structure is succinct, the processing of being convenient for, use under to large automobile or engineering machine tool operating mode condition, when the dabber diameter is great, have the wall thickness of sufficient space increase dabber, make the structural strength (including the bending strength etc.) of dabber can guarantee, the dabber that adopts hollow structure replaces current solid core structure, reduce the inertia of axle type bearing, for bearing heat dissipation increase heat radiating area and passageway in save material, thereby the life of axle type bearing has been prolonged, realize the purpose of cost reduction and efficiency improvement.

(2) The utility model discloses bearing rolling assembly is equipped with and constitutes three rows of rolling assemblies by steel ball, first roller and second roller, and along axial interval distribution, and the pivoted stability has been guaranteed to the overlapping region of the bearing rolling assembly of increase and dabber.

(3) The utility model discloses the steel ball adopts the design of four point contact angle, effectively increases rolling assembly's axial bearing capacity.

(4) The contact angle of the utility model is 17 degrees to 45 degrees, further ensuring the axial bearing capacity of the steel ball.

(5) The utility model discloses a holder is made by the nylon materials, has effectively reduced the noise of bearing.

(6) The utility model discloses first roller and second roller are equipped with multiple arrangement form, can satisfy different application scenes according to actual load increase and decrease roller quantity, further practice thrift the cost.

(7) The utility model discloses being equipped with the sealing washer, avoiding the dust to get into bearing runner assembly, guaranteeing to rotate smoothly, it has lubricating grease to fill simultaneously, reduces and rotates frictional force, further improves the bearing and rotates smooth and easy nature.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

The reference numbers in the figures are:

the device comprises a mandrel 1, a mandrel channel 1-1, an outer ring 2, an outer ring channel 2-1, a first retainer 3, a second retainer 4, a third retainer 5, a first roller 6, steel balls 7, a second roller 8 and a sealing ring 9.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

(example 1)

The shaft connecting bearing for the automobile fan shown in figure 1 comprises a mandrel 1, an outer ring 2 and a bearing rolling assembly, wherein the outer ring 2 is sleeved outside the mandrel 1 in a coaxial clearance mode, a mandrel channel 1-1 is formed in the outer wall of the mandrel 1, an outer ring channel 2-1 corresponding to the mandrel channel 1-1 is formed in the inner wall of the outer ring 2, and the bearing rolling assembly is arranged between the mandrel channel and the outer ring channel and is rotatably sleeved outside the mandrel 1, so that the outer ring 2 is rotatably connected with the mandrel 1. The spindle 1 is of a hollow structure, so that the rotational inertia of the solid-core shaft bearing is reduced, the heat dissipation area and the heat dissipation channel are increased for the heat dissipation of the bearing while the materials are saved, and the service life of the shaft bearing is prolonged.

Specifically, the bearing rolling assembly comprises a first retainer 3, a second retainer 4, a third retainer 5, a first roller 6, steel balls 7 and a second roller 8, wherein the first retainer 3, the second retainer 4 and the third retainer 5 are rotatably sleeved outside the mandrel 1 and are distributed at intervals along the axial direction, the first roller 6, the steel balls 7 and the second roller 8 are respectively provided with a plurality of rollers and are respectively embedded on the first retainer 3, the second retainer 4 and the third retainer 5, so that a row of first rollers, a row of steel balls and a row of second rollers which are uniformly distributed along the circumferential direction of the mandrel 1 are formed, the overlapped area of the enlarged bearing rolling assembly and the mandrel 1 ensures the stability of rotation. In order to increase the axial bearing capacity of the rolling assembly, a four-point contact angle design is adopted among the steel ball 7, the mandrel channel 1-1 and the outer ring channel 2-1, the angle of the contact angle is 17-45 degrees, the preferred angle of the contact angle is 30 degrees, and the axial bearing capacity of the steel ball is further ensured. The first retainer 3, the second retainer 4 and the third retainer 5 are all made of nylon materials, and the noise of the bearing is effectively reduced. The number of the rollers can be increased or decreased and the distribution positions of two rows of rollers relative to the steel balls can be changed according to the actual load of the shaft bearing, namely the first roller 6 and the second roller 8 are symmetrically distributed on two sides of the steel balls 8 by adopting two rows of rollers with the same structure and number or asymmetrically distributed on two sides of the steel balls 8 by adopting two rows of rollers with different structures and numbers, and the first roller 6 and the second roller 8 are symmetrically distributed on two sides of the steel balls 8 by adopting two rows of rollers with the same structure and number.

In order to avoid dust entering the bearing rolling assembly, the two ends of the bearing rolling assembly are provided with the sealing rings 9 which are arranged between the mandrel 1 and the outer ring 2 in an interference manner, a closed space is formed among the sealing rings 9, the mandrel 1 and the outer ring 2, and lubricating grease is filled in a gap between the bearing rolling assembly and the closed space, so that the rotating friction force of the bearing rolling assembly is reduced, and the rotating smoothness of the bearing is further improved.

For solid shaft structureMandrel structure strength of shaft-connected bearing, bending-resistant section coefficient = pi x shaft diameter ³ A/32; torsional section coefficient = π × axial diameter ³ /16. For the mandrel structural strength of the hollow structure shaft coupling bearing: bending resistance section coefficient = (pi x axle diameter) ³ (1-aperture/shaft diameter) × (32) × (1-aperture/shaft diameter) ⁴ ) (ii) a Torsional section coefficient = (pi x axial diameter) ³ /16). Times (1-aperture/shaft diameter) ⁴ ). The diameter of the outer ring 2 of the bearing is phi 80mm, the shaft diameter of the mandrel 1 with a hollow structure is phi 51mm, when the diameter of the bore is phi 25mm, the structure with the solid shaft diameter of phi 50mm can be replaced, and the strength of the checking structure is basically consistent. Therefore, use under the operating mode condition to large-scale car or engineering machine tool, when dabber 1 diameter is great, have sufficient space and increase the wall thickness of dabber 1 for the structural strength of dabber 1, including the intensity of bending torsion etc. can guarantee.

The utility model discloses the structure is succinct, and the processing of being convenient for adopts hollow structure's dabber 1 to replace current solid core structure, reduces the inertia of axle type bearing, increases heat radiating area and passageway for the bearing heat dissipation in save material to prolong the life of axle type bearing, realized cost reduction and efficiency increase's purpose

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an automobile fan is with axle connection bearing which characterized in that: the bearing rolling device is characterized by comprising a mandrel (1) and an outer ring (2) sleeved outside the mandrel (1) in a clearance manner, wherein the mandrel (1) is of a hollow structure, a mandrel channel (1-1) is formed in the outer wall of the mandrel (1), an outer ring channel (2-1) corresponding to the mandrel channel (1-1) is formed in the inner wall of the outer ring (2), and a bearing rolling assembly rotationally arranged around the mandrel (1) is arranged between the mandrel channel (1-1) and the outer ring channel (2-1).

2. The shaft coupling bearing for an automotive fan according to claim 1, characterized in that: the bearing rolling assembly comprises a first retainer (3), a second retainer (4), a third retainer (5) which are rotatably sleeved outside the mandrel (1) and axially distributed at intervals, and a row of first rollers (6), a row of steel balls (7) and a row of second rollers (8) which are uniformly distributed along the circumferential direction of the mandrel (1) and are respectively embedded on the first retainer (3), the second retainer (4) and the third retainer (5).

3. The shaft coupling bearing for the automotive fan as defined in claim 2, wherein: and four-point contact angle design is adopted among the steel balls (7), the mandrel channel (1-1) and the outer ring channel (2-1).

4. The shaft coupling bearing for the automobile fan according to claim 3, wherein: the angle of the contact angle is 17-45 degrees.

5. The shaft coupling bearing for the automobile fan according to claim 2, wherein: the first retainer (3), the second retainer (4) and the third retainer (5) are all made of nylon materials.

6. The shaft coupling bearing for the automobile fan according to claim 2, wherein: the first roller (6) and the second roller (8) are the same in structure and number and are symmetrically distributed on two sides of the steel ball (7).

7. The shaft coupling bearing for the automobile fan according to claim 2, wherein: the first roller (6) and the second roller (8) are different in structure and number and are asymmetrically distributed on two sides of the steel ball (7).

8. The shaft coupling bearing for an automotive fan according to claim 1, characterized in that: the bearing rolling assembly is characterized in that sealing rings (9) which are arranged between the mandrel (1) and the outer ring (2) in an interference mode are arranged at two ends of the bearing rolling assembly, a closed space is formed among the sealing rings (9), the mandrel (1) and the outer ring (2), and lubricating grease is filled in a gap between the bearing rolling assembly and the closed space.