CN201155481Y - Oil-bearing fan oil leakage prevention structure - Google Patents

Abstract

An oil leakage prevention structure of a fan with an oil-retaining bearing comprises a base, a fan wheel and a bearing, wherein the base is provided with a shaft barrel for the bearing to be arranged, the inner surface of the fan wheel is provided with a staggered structure and a shaft rod connected with the staggered structure, the shaft rod is inserted in the bearing, the staggered structure is arranged on the outer side of the shaft rod in a surrounding mode and corresponds to the inner surface of the adjacent first end, the bearing comprises a central hole and an arc-shaped chamfer, the arc-shaped chamfer is opposite to the staggered structure, the central hole penetrates through the two ends of the bearing for the shaft rod to penetrate through, at least one cone chamfer is arranged at the two ends of the central hole in a distributed mode, and at least one second oil storage part is arranged on the inner surface of the central hole and is close to the shaft rod, so that a radial closed. This above-mentioned back taper angle makes because of accepting lubricating oil in this novel lubricating oil forms back taper angle and axostylus axostyle surface and forms a lubricating oil protection zone, prevents that the axostylus axostyle slope from causing the pitting phenomenon of bearing.

Description

Oil bearing fan oil leakage prevention structure

technical field

The utility model relates to an oil-leakage prevention structure of an oil bearing fan, in particular to an oil leakage prevention structure which avoids lubricating oil loss of the bearing and prolongs the service life of the fan.

Background technique

As shown in Figure 1, the existing structure has a body 10, the center of the body 10 is connected with a positioning seat 11, and a hollow shaft cylinder 111 is protruded from the positioning seat 11, and a bearing 12 is arranged inside the shaft cylinder 111. The shaft cylinder 111 is covered with a coil 13; a fan wheel 14, the outer surface of the fan wheel 14 is provided with blades 141, and a magnetic ring 142 is arranged around the inner side of the fan wheel 14 to correspond magnetically to the above-mentioned coil 13, and the inner surface A shaft 143 is provided, and the shaft 143 penetrates the bearing 12 and is fastened and positioned by the snap ring 15 and the oil ring 16 .

However, the above problems exist in actual use. The bearing 12 will release lubricating oil from the sintering hole to lubricate the high-speed rotating shaft 143 to avoid dry friction and loss. However, it is not enough to only set the oil ring 16 on the shaft 143. To prevent the lubricating oil from leaking from the front end gap of the shaft cylinder 111, due to the leakage of the lubricating oil, it will flow outwards with the centrifugal force of the shaft rod 143, and flow out through the gap between the shaft cylinder 111 and the shaft rod 143, As a result, the lubricating oil is gradually depleted. When the lubricating oil is exhausted, the rotation of the shaft rod 143 will cause excessive frictional wear due to the lack of lubricating oil, and generate noise and reduce the service life, which does not meet the needs of users.

Therefore, in view of the above-mentioned shortcomings, the inventor of this case exhausted his brains and devoted himself to research and innovation and improvement based on his years of experience in the industry. A utility model with improved efficacy.

Contents of the invention

Therefore, in order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide an oil-leakage-proof structure of an oil bearing fan that stores oil and prevents lubricating oil from leaking out.

Another object of the present invention is to provide a second oil storage part on the inner surface of the center hole of the bearing, so that the lubricating oil between the bearing and the shaft does not leak out along the shaft center with capillary action and centrifugal force.

Another object of the present invention is to provide a reverse cone angle on the inner surface of both ends of the center hole of the bearing, so that the bearing and the shaft are in line contact to avoid pitting.

Another purpose of the utility model is to provide a staggered structure with an arc-shaped chamfer on the outer surface of one end of the bearing opposite to the inner side of the fan wheel, so that the lubricating oil blocked by the staggered structure can flow back along the arc-shaped chamfer and infiltrate bearings.

In order to achieve the above-mentioned purpose, the utility model provides an oil-impregnated bearing fan oil leakage prevention structure, which includes: a base, a shaft tube is provided, the shaft tube has a first end and a second end, the The second end is provided with a first oil storage part; a fan wheel with a shaft and a staggered structure arranged on its inner surface, and the staggered structure is arranged around the shaft and adjacent to the inner surface of the first end; and a The bearing is installed in the above-mentioned shaft tube, which includes: a central hole that runs through the two ends of the bearing for the above-mentioned shaft to pass through. It has at least one reverse taper angle, and the inner surfaces of the two ends of the central hole are separately set, and at least one The second oil storage part is arranged on the inner surface of the central hole, close to the above-mentioned shaft rod; an arc-shaped chamfer is arranged on the outer surface of one end of the bearing opposite to the above-mentioned staggered structure.

The base is provided with a shaft tube for the above-mentioned bearing to be installed, and the inner surface of the fan wheel is provided with a staggered structure and a shaft connecting the staggered structure, the shaft is inserted into the above-mentioned bearing, and the staggered structure ring is set On the outer side of the shaft and correspondingly adjacent to the inner surface of the first end, the bearing includes a central hole and an arc-shaped chamfer, the arc-shaped chamfer is opposite to the above-mentioned staggered structure, and the central hole runs through the bearing The two ends are for the above-mentioned shaft to pass through, and at least one chamfer is provided at both ends of the central hole, and at least one second oil storage part is arranged on the inner surface of the central hole adjacent to the above-mentioned shaft, forming a radial closed circuit for lubrication The oil backflow penetrates into the bearing to prevent the lubricant from escaping.

The utility model has the advantages: when the shaft rotates in the bearing, the lubricating oil in the first oil storage tank rises along the shaft, so that most of the lubricating oil remains in the second oil storage tank, preventing dry friction between the above two, and a small part The lubricating oil that continues to rise along the shaft is stopped by the first and second annular concave-convex parts, falls into the reverse taper and arc chamfer, and flows back to the first oil storage tank along the groove on the bearing surface. Therefore, this heavy protection can prevent the lubricating oil from leaking out. The above-mentioned reverse cone angle accepts lubricating oil, so that the lubricating oil forms a reverse cone angle and the outer surface of the shaft to form a lubricating oil protection zone, preventing the pitting phenomenon of the bearing caused by the tilt of the shaft.

The above-mentioned purpose of the utility model and its structural and functional characteristics will be described according to the preferred embodiments of the accompanying drawings.

Description of drawings

Fig. 1 is existing structure schematic diagram;

Fig. 2 is the three-dimensional exploded schematic view of the preferred implementation of the utility model;

Figure 3 is a schematic diagram of a cross-sectional exploded view of a preferred implementation of the utility model;

Fig. 4 is a schematic diagram of a cross-sectional combination of a preferred implementation of the utility model;

Figure 4a is an enlarged schematic view of the reverse taper angle at one end of the central hole;

Figure 4b is an enlarged schematic view of the reverse taper angle at the other end of the central hole;

Fig. 5 is a schematic diagram of the second oil storage part of the preferred implementation of the utility model;

Fig. 6 is a schematic diagram of another state of the second oil storage part in a preferred embodiment of the present invention.

Explanation of reference signs: 10 body; 11 positioning seat; 111 shaft cylinder; 12 bearing; 13 coil; 14 fan wheel; 141 blade; 142 magnetic ring; Shaft cylinder; 2111 first end; 2113 first oil storage part; 2114 wear plate; 2115 fastener; 22 fan wheel; 221 shaft; 223 staggered structure; Bearing; 231 center hole; 232 arc chamfer; 233 reverse taper angle; 234 second oil storage part; 235 concave groove.

Detailed ways

The utility model provides an oil bearing fan oil leakage prevention structure, and the figure shows a preferred embodiment of the utility model, please refer to Fig. 2, Fig. 3, Fig. 4, Fig. 4A, Fig. 4B, Fig. 5, and Fig. 6, including A base 21, a fan wheel 22 and a bearing 23, the base 21 can be located in a fan frame or on a radiator, it is provided with a shaft tube 211, the content of the shaft tube 211 is provided with the bearing 23 The fan wheel 22 has a shaft 221 that can be inserted into the bearing 23 , so that the fan wheel 22 is pivotally mounted on the base 21 .

The shaft cylinder 211 has a first end 2111 and a second end, the first end 2111 is connected to the shaft cylinder 211, and a first oil storage part 2113 is arranged in the second end, and a The second end of the wear-resistant sheet 2114 and at least one fastener 2115 is closed in this figure, but it is not limited thereto, it can also be open, and the second end can be closed with a bottom cover (not shown).

A shaft 221 and a staggered structure 223 are arranged on the inner surface of the fan wheel 22. The staggered structure 223 is arranged around the shaft 221 and corresponds to the inner surface adjacent to the first end 2111. In a specific implementation, the staggered structure 223 has at least a first annular concave portion 2231 and a second annular convex portion 2232, the first and second annular concave-convex portions 2231, 2232 are corresponding to the above-mentioned open end 2111, and the first annular concave portion 2231 is set around Outside the shaft 221 , the second annular protrusion 2232 is disposed outside the first annular recess 2231 and adjacent to the inner surface of the first end 2111 .

The bearing 23 is arranged in the shaft cylinder 211, which includes a central hole 231 and an arc chamfer 232, the central hole 231 runs through the two ends of the bearing 23, and at both ends of the central hole 231 A chamfer 233 is provided on the inner surface of the end, and at least one second oil storage portion 234 is provided on the inner surface of the central hole 231 ; In addition, the outer surface of the above-mentioned bearing 23 is provided with at least one concave groove 235, and the other end of the concave groove 235 extending from one end of the bearing 23, and the above-mentioned second oil storage part 234 extends to the middle section of the inner surface of the central hole 231 until there is no groove. One end of the arc-shaped chamfer, the second oil storage portion 234 in this preferred illustration is shown as extending axially, but it is not limited thereto, and it can also extend helically as shown in FIG. 6 .

After one end of the above-mentioned shaft 221 passes through the central hole 231, it is fastened by the fastener 2115 corresponding to the first oil storage tank 2113, and at the same time, the end surface contacts the wear-resistant plate 2114, and is arranged on the inner surface of the central hole 231. The second oil storage groove 234 is adjacent to the outer surface of the shaft 221 .

In this way, when the shaft 221 rotates in the bearing 23, the lubricating oil in the first oil storage tank 2113 rises along the shaft 221, so that most of the lubricating oil remains in the second oil storage tank 234, preventing dry friction between the above two, and a small part continues The lubricating oil rising along the shaft 221 is stopped by the first and second ring-shaped concave-convex parts 2231, 2232, then falls into the reverse taper angle 233 and the arc-shaped chamfer 232, and along the groove 235 on the surface of the bearing 23 It flows back to the first oil storage tank 2113, so the heavy protection can prevent the lubricating oil from leaking out.

The above-mentioned reverse taper angle 233 receives lubricating oil, so that the lubricating oil forms a lubricating oil protection zone between the reverse taper angle 233 and the outer surface of the shaft 221 to prevent pitting of the bearing 23 caused by the tilting of the shaft 221 .

The above are only preferred and feasible embodiments of the present utility model, and all changes made by using the above-mentioned method, shape, structure, and device of the present utility model should be included in the scope of rights of the present case.

Claims (6)

1. An anti-leakage structure of an oil bearing fan, characterized in that it includes: A base, provided with a shaft tube, the shaft tube has a first end and a second end, and the second end is provided with a first oil storage part; A fan wheel with a shaft and a staggered structure on the inner surface, the staggered structure is arranged around the shaft and adjacent to the inner surface of the first end; and A bearing is arranged in the above-mentioned shaft tube, which includes: A central hole, which runs through the two ends of the bearing for the above-mentioned shaft to pass through, has at least one inverted cone angle, and is separately provided with the inner surfaces of both ends of the central hole, and at least one second oil storage part, which is arranged on the inner surface of the central hole , next to the above shaft; An arc chamfer is provided on the outer surface of one end of the bearing opposite to the staggered structure. 2. The anti-leakage structure of an oil-impregnated bearing fan according to claim 1, wherein at least one concave groove is provided on the outer surface of the bearing, and the concave groove extends from one end of the bearing to the other end. 3. The anti-leakage structure of an oil-impregnated bearing fan according to claim 1, wherein the staggered structure has at least one first annular concave portion and one second annular convex portion, and the first and second annular concave-convex portions It corresponds to the above-mentioned open end, and the first annular recess is disposed around the outer side of the shaft, and the second annular protrusion is disposed around the outer side of the first annular recess and adjacent to the inner surface of the first end. 4. The anti-leakage structure of an oil-impregnated bearing fan according to claim 1, wherein the second oil storage portion extends from the middle section of the inner surface of the central hole to the end without an arc-shaped chamfer. 5. The anti-leakage structure of an oil-impregnated bearing fan according to claim 1 or 4, wherein the second oil storage portion extends axially. 6. The anti-leakage structure of an oil-impregnated bearing fan according to claim 1 or 4, characterized in that, the second oil storage portion extends in a spiral shape.

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