KR200303970Y1 - Structure for preventing dust and oil-leakage of bearing - Google Patents

Abstract

(assignment)

It is intended to provide a dust and oil spill prevention structure of a bearing that can be coupled to a rotating shaft mounted on the bearing to give the bearing a relatively good dust and oil spill prevention effect.

(Solution)

A bearing is installed inside the bearing housing, and the bearing is used to rotate with a rotating shaft mounted therein, and the circumferential portion of the ring has an inner circumferential wall of the bearing housing by closely coupling the through hole of the ring with the rotating shaft located above the bearing. And close contact or fine interval contact.

Description

STRUCTURE FOR PREVENTING DUST AND OIL-LEAKAGE OF BEARING}

The present invention relates to a dust and oil spill prevention structure of a bearing. Particularly, a dust of a bearing which can provide a relatively good dust and oil spill prevention effect to a bearing by coupling a ring to a rotating shaft mounted on the bearing. An oil spill prevention structure.

As the oil leakage prevention structure of the conventional bearing, in the "radiation fan of lubricating oil external leakage prevention" of the Republic of China Patent Publication No. 415605 shown in Fig. 7, the structure mainly consists of the case body 91 and the wing member 92 do. Its characteristic is that the oil blocking protrusion box 94 protrudes axially from the hub of the wing member 92 to the outer circumference of the rotating shaft 93, and the oil blocking protrusion box 94 is the rotary shaft ( 93, the bottom end of the oil stopping protrusion box 94 is formed to be seated on the bearing housing 95 and at the same time surrounds the upper edge of the bearing housing 95. It is configured to. In this way, when the wing member is driven, when the lubricating oil existing between the rotating shaft 93 and the bearing 96 rises upward and outward in connection with the rotating shaft 93 by the action of centrifugal force, It may be guided to flow between the rotary shaft 93 and the bearing 96 at the same time as blocked by the oil stopping protrusion box 94.

The main object of the present invention is to provide a dust and oil spill prevention structure of a bearing that can couple the ring to a rotating shaft mounted on the bearing to give the bearing a relatively good dust and oil spill prevention effect.

In order to achieve the above object, the dust and oil leakage prevention structure of the bearing according to the present invention is configured as follows.

That is, a bearing is installed inside the bearing housing, and the bearing is used to rotate by mounting the rotating shaft, and the through hole of the ring is closely coupled with the rotating shaft located above the bearing so that the circumference of the ring housing It is formed to be in intimate contact or fine interval contact with the inner circumferential wall.

In addition, the dust and oil leakage prevention structure of the bearing of the present invention may be configured as follows.

1. An annular groove for catching the engaging member is installed in the concave shaft.

2. One or more packings are inserted by a loose fit on the axis of rotation between the ring and the bearing.

3. The thickness of the circumference of the ring is formed to be thinner than the middle portion of the ring.

4. The top and bottom of the middle part of the ring are formed such that the thickness gradually decreases toward the circumference at the same time.

5. The circumference of the ring is provided in a ring shape in the middle of the middle part with the same thickness.

6. The circumference of the ring is provided in an annular shape at one end of the middle part with the same thickness.

7. The circumference of the ring is provided to extend outward and downward from the circumference of the middle portion of the ring.

1 is an exploded perspective view of a dust and oil leakage preventing structure of a bearing of a first embodiment of the present invention.

Figure 2 is a cross-sectional view of the assembled state of the dust and oil leakage prevention structure of the bearing of the first embodiment of the present invention.

3 is a partially enlarged view of the portion indicated by 3 in FIG. 2.

4 is a front sectional view of the ring of the second embodiment of the present invention.

5 is a front sectional view of the ring of the third embodiment of the present invention.

6 is a front sectional view of the ring of the fourth embodiment of the present invention.

7 is a sectional view of a conventional structure.

Explanation of symbols on the main parts of the drawings

1: bearing housing 10: bearing

12: axis of rotation 13: annular groove

14: locking member 15: packing

2: ring 21: through hole

22: circumference 91: case body

92: wing member 93: axis of rotation

94: protrusion box for oil stop 95: bearing housing

96: bearing

An embodiment of the present invention will be described with reference to the drawings below.

(First embodiment)

1, in the dust and oil leakage prevention structure of the bearing of the first embodiment of the present invention, a bearing 11 is installed inside the bearing housing 1, and the bearing housing 1 has a conventional structure. The shaft of the heat dissipation fan (fan) may be composed of a shaft housing, the shaft housing, the bearing 11 may be composed of a conventional ball bearing, oilless bearing (oilless bearing). The bearing 11 is used to rotate the rotating shaft 12 of the rotor, the annular groove 13 is recessed in the rotating shaft 12, the annular groove 13, C-shaped ring, etc. Since the locking member 14 can be used to be inserted, the rotational shaft 12 can be prevented from coming off.

A feature of the present invention is that a ring 2 and one or more packings 15 are installed on the rotating shaft 12 located above the bearing 11. The ring 2 has a circular shape, and a through hole 21 is drilled in the middle portion thereof, and the ring 2 is inserted into the rotating shaft 12 by the through hole 21 to be in close contact with the rotating shaft 12. It is integrally formed to rotate. Since the circumferential portion 22 of the ring 2 is formed to be in intimate contact with the inner circumferential wall of the bearing housing 1 or finely spaced contact, the circumferential portion 22 of the ring 2 and the bearing housing 1 The inner circumferential wall is formed to have a minimum gap. The ring 2 is preferably made of a soft material such as rubber, the thickness of the circumferential portion 22 of the ring 2 is thinner than the middle portion of the ring 2, and the thick middle of the ring 2 The upper and lower portions are inclined simultaneously from the portion toward the circumferential portion 22 so that the thickness becomes gradually thinner. In order to avoid friction between the ring 2 and the bearing 11, one or more packings 15 are inserted between the rings 2 and the bearings 11, and the packing 15 has a loose clearance. It is inserted into the rotating shaft 12 by a fit).

2 and 3, the ring 2 and the packing 15 are coupled to the inside of the bearing housing 1 together with the rotation shaft 12, and the ring 2 is connected to the through hole 21. By being coupled to the rotary shaft 12 in a close coupling manner, the circumferential portion 22 of the ring 2 and the inner circumferential wall of the bearing housing 1 are formed in close contact or in fine contact with each other. The circumferential portion 11 of 2) and the inner circumferential wall of the bearing housing 1 are formed to have a minimum distance. As described above, the ring 2 has a relatively good dust prevention effect, and when the rotating shaft 12 rotates, the lubricating oil coming between the rotating shaft 12 and the bearing 11 is applied by the centrifugal force. When raised upward along the rotary shaft 12, the lubricant is impeded by the ring 2 and withdrawn along the contact surface of the bearing 11 and the inner circumferential wall of the bearing housing 1. Furthermore, at least one packing 15 is installed between the ring 2 and the bearing 11, and the packing 15 is installed by a loose fit, so that the ring 2 and the bearing 11 are provided. Wear can be suppressed.

(2nd Example)

4, in the second embodiment of the present invention, the through hole 21 and the circumferential portion 22 is formed in the ring 2, the central step of the ring 2 is relatively thick, the circumferential portion 22 is formed relatively thin. In the most preferred embodiment, the relatively thin portion of the ring 2 is formed in a single thickness and is installed in a ring shape in the middle of the relatively thick portion of the central step. As such, when the ring 2 is closely attached to the rotary shaft 12, the ring 2 is similarly formed to have a dust prevention and oil spill prevention effect.

(Third Embodiment)

Referring to FIG. 5, in the third embodiment of the present invention, the through hole 21 and the circumferential portion 22 are formed in the ring 2, and the central step portion of the ring 2 is relatively thick, and the circumferential portion is formed. 22 is formed relatively thin. In the most preferred embodiment, the relatively thin portion of the ring 2 is formed in a single thickness, and at the same time is provided in an annular shape at one end of the relatively thick portion of the central step. As such, when the ring 2 is installed in close contact with the rotary shaft 12, the ring 2 is formed to have the same effect of preventing dust and preventing oil leakage.

(Example 4)

Referring to FIG. 6, in the fourth embodiment of the present invention, the through hole 21 and the circumferential portion 22 are formed in the ring 2. In the most preferred embodiment, the circumferential portion 22 of the ring 2 is installed so as to extend outward and downward from the circumferential portion of the middle portion of the ring 2. As such, when the ring 2 is installed in close contact with the rotary shaft 12, the ring 2 is formed to have the same effect of preventing dust and preventing oil leakage.

According to the dust and oil leakage prevention structure of the bearing of the present invention, when the ring is inserted close to the rotating shaft, the circumferential portion of the ring and the inner circumferential wall of the bearing housing are formed to have a minimum distance, and thus fine dust in the air. Since the fine particles can be prevented from entering between the bearing and the rotating shaft, and the dust fine particles can be mixed with the lubricating oil to avoid the influence on the rotation of the motor, the ring has the advantage of having a relatively good dust prevention effect. have.

In addition, according to the dust and oil leakage prevention structure of the bearing of the present invention, when the ring is inserted in close contact with the rotating shaft, when the rotating shaft rotates, lubricating oil coming between the rotating shaft and the bearing is connected to the rotating shaft by the action of centrifugal force. In addition, when raised to the outside, the lubricating oil is blocked by the ring and connected to the contact surface of the inner circumferential wall of the bearing and the bearing housing is recovered downward, furthermore, a packing is inserted between the ring and the bearing, and the packing is loosely fitted. Since it is inserted by a fitting method, there is an advantage that the wear of the ring and the bearing can be suppressed to be low and the service life can be extended.

The present invention can be implemented in other ways without departing from its spirit and essential features. Accordingly, the preferred embodiments described herein are illustrative and not restrictive.

Claims (8)

A bearing 11 is installed inside the bearing housing 1, and the bearing 11 is used to rotate by mounting the rotating shaft 12, and the through hole 21 of the ring 2 is moved to the bearing 11. The circumferential portion 22 of the ring 2 is in close contact with the inner circumferential wall of the bearing housing 1 by being in close contact with the rotating shaft 12 located in the upper direction of the bearing, characterized in that Dust and oil spill prevention structure. The method of claim 1, The dust and oil leakage prevention structure of the bearing, characterized in that the annular groove (13) for engaging the locking member 14 in the rotary shaft 12 is recessed. The method of claim 1, Dust and oil spill prevention structure of the bearing, characterized in that one or more packings (15) is inserted into the rotary shaft (12) between the ring (2) and the bearing (11) by a loose fit. The method of claim 1, Dust and oil spill prevention structure of the bearing, characterized in that the thickness of the circumferential portion (22) of the ring (2) is formed thinner than the middle portion of the ring (2). The method of claim 4, wherein The dust and oil spill prevention structure of a bearing, characterized in that the upper and lower portions of the middle portion of the ring (2) are formed to gradually decrease in thickness toward the circumference at the same time. The method of claim 4, wherein Dust and oil spill prevention structure of the bearing, characterized in that the circumference of the ring (2) is installed in the shape of a ring in the middle of the middle portion with the same thickness. The method of claim 4, wherein Dust and oil spill prevention structure of the bearing, characterized in that the circumferential portion of the ring (2) is installed in a ring shape at one end of the middle portion with the same thickness. The method of claim 4, wherein The circumferential portion (22) of the ring (2) extends outward and downward from the circumference of the middle portion of the ring (2).