CN2302359Y - Fan oil seal cap - Google Patents

Abstract

The utility model relates to a fan oil blanket cap, the body of this fan is by the four sides prolong the formation framework that connects, the inside ladder caulking groove that is formed with of bearing frame of central authorities department, the card groove and the shaft hole are corresponding, make the one end of bearing frame, set firmly the axle center, this oil blanket cap is gone into to other end then card, the one end of this oil blanket cap, be equipped with a bulge loop that up extends, go up and establish the several flange, make the ladder caulking groove that the oil blanket cap can correspond the bearing frame, card groove and shaft hole, and make card groove and bulge loop looks block, and through the in close contact with of shaft hole and flange, reach and more can prevent that oil from leaking in outer efficiency.

Description

Fan oil seal cap

The utility model relates to a fan oil seal cap.

In recent years, due to the widespread use of DC brushless fans, such as the fan on the rear side of the computer host, or the fan assembled at the rear of the copier, etc., the computer or copier can be equipped with a fan that can automatically start the fan. The effect of heat dissipation enables the computer or copier to be used continuously, without causing the body temperature to be too high due to continuous use, and the use must be suspended to reduce the temperature of the body. Therefore, it is known that it adds a DC brushless fan to the computer or On the photocopier, it can make the computer or copier have functions such as smooth operation.

The fan shaft of the current DC brushless fan is provided with a self-lubricating bearing, so that when the fan is in normal operation, the fan shaft can self-supply oil to lubricate its shaft, and it must be on the rear side of the self-lubricating bearing On the top, an oil seal cap is provided to prevent its oil from leaking outside. As shown in Figure 4, it is the use state of the common fan oil seal cap 90 today. Its body 80 is formed by extending four sides into a frame, and is Several struts are used to connect the frame body and the bearing seat 81 in the center is integrated. A stepped slot 84 is formed inside the bearing seat 81, and a self-lubricating bearing 82 is fixed in the stepped slot 84, and a fan shaft center 83 is penetrated and fixed, and then an oil seal cap 90 is inserted into the stepped slot 84, and several flanges 91 are provided on the protruding rod of the oil seal cap 90, so that the oil seal cap 90 can be tightly clamped on the Position on the stepped slot 84, so that the oil of the self-lubricating bearing 82 is not easy to flow out of the bearing seat 81.

However, in actual application, although the oil seal cap can achieve the effect of preventing the oil from flowing out of the bearing housing, it also causes many problems. The main reason is that after the oil seal cap has been used for a long time, its lubricating oil will still pass through The tight flange, and slowly leaks out of the bearing seat, so that the lubricating oil of the bearing seat is gradually reduced, causing the fan to be used for a long time, and when the internal axis of the fan is in urgent need of lubricating oil to lubricate, and the Lack of lubricating oil, the fan shaft and self-lubricating bearings in contact with each other will cause mutual friction and wear, and the fan shaft will be easily damaged for a long time and cannot continue to run. Therefore, the traditional oil seal cap There are above-mentioned shortcoming, so still need to improve again.

It can be seen that the current application of the oil seal cap is still incomplete, so there are still many troubles, and the utility model is designed to address the shortcomings of the oil seal cap, so as to increase the efficiency of the oil seal cap. Positioning and oil leakage prevention capabilities to achieve the following goals.

The purpose of this utility model is to provide a fan oil seal cap, which can make the oil seal cap tightly clamped on the stepped slot of the bearing seat for positioning. When the fan is in use, the oil in the self-lubricating bearing is not easy to leak from the oil seal. The protruding ring provided by the cap overflows, and the oil seal cap has an extra layer to prevent oil from leaking outside.

The technical solution of the utility model is to provide a fan oil seal cap. The main body of the fan is formed by extending four sides to form a frame body, and several struts are used to connect the frame body and the bearing seat at the center. A stepped slot and shaft hole are formed inside. One end of the bearing seat is fixed with a fan shaft, and the other end is snapped into the oil seal cap. The oil seal cap is provided with several flanges on the protruding rod corresponding to the shaft hole. , characterized by:

One end of the oil seal cap is provided with a protruding ring extending upwards, and a locking groove is formed on the corresponding edge of the protruding ring, so that the shaft hole is in close contact with the flange. The groove and the protruding ring are engaged with each other, so that the oil seal cap has an additional function of preventing oil from leaking out.

Compared with the prior art, the utility model has obvious advantages and positive effects. It can be seen from the above technical solutions that the key point of the oil seal cap of the present invention is that the oil seal cap is provided with a convex ring and several flanges, that is, the tight fit between the flange and the shaft hole makes the fan shaft When the core rotates and shakes the oil to seep downward from the flange, because there is a protruding ring on the side, the protruding ring can prevent the oil flowing from the side from flowing out of the oil seal cap, so that the oil seal cap has An extra layer of anti-oil leakage function makes the fan shaft less likely to be damaged due to lack of lubricating oil, and provides the effect of DC brushless fan running more smoothly.

Below in conjunction with accompanying drawing, further illustrate the specific structure feature and purpose of the present utility model.

Brief description of the drawings:

Fig. 1 is an exploded schematic view of the three-dimensional appearance of the utility model.

Fig. 2 is a side view exploded schematic diagram of the utility model.

Fig. 3 is a side view schematic diagram of the assembly and use state of the utility model.

Fig. 4 is a schematic diagram of a side view of a traditional fan oil seal cap in assembly and use.

Please refer to Figures 1 and 2, which are three-dimensional plane exploded schematic diagrams of the present utility model, where it can be seen that the fan body 10 is mainly formed by extending four sides to form a frame, and several poles are used to connect the frame and the fan body. The bearing seat 11 set in the center is integrated, and a stepped socket 14 is formed inside the bearing seat 11, and a shaft hole 15 and a locking groove 141 are arranged in the stepped socket, and are arranged on the corresponding side of the stepped socket 14. , is provided with an oil seal cap 20 to cooperate, and one end surface of the oil seal cap 20 is provided with a protruding ring 21 extending upwards, and on the inner side of the protruding ring 21, a stepped protruding rod is formed, and on it Several flanges 22 are provided around a protruding rod, so that it can correspond to the inner diameter of the shaft hole 15 of the stepped socket 14, and when the oil seal cap 20 is completely inserted into the stepped socket 14, it can be The provided flange 22 is in close contact with the shaft hole 15, and is locked with the other corresponding convex ring 21 and the locking groove 141, etc., so as to provide a design that the oil seal cap 20 can be tightly embedded in the stepped groove 14 for positioning .

Viewed from Fig. 3 again, it is a side view assembly and use state schematic diagram of the body 10 of the present utility model. It can be seen that a self-lubricating bearing 12 is fixed on the shaft hole 15 of the body 10, so that a fan shaft 13 can pass through. Into the self-lubricating bearing 12, and can be locked by an oil seal, gasket and buckle, so that when the fan shaft 13 is running, there will be no accidents thrown out, so that the fan shaft 13 and the self-lubricating The bearings 12 are running in contact with each other, and an oil seal cap 20 is embedded in the stepped groove 14, so that the locking groove 141 and the convex ring 21 can be engaged, and the shaft hole 15 and the flange 22 inside are also It is in close contact, so that its oil seal cap 20 has one more layer of oil leakage prevention function.

Claims (1)

1. fan Oil seal cap, the body of this fan is to be received by four limits to form a framework, and connect the bearing support of framework and centre by several poles, the inside of its bearing support is formed with a ladder caulking groove and an axis hole, and an end of bearing support sets firmly a Fan axial center, then snap in this Oil seal cap in other end, on the nose bar of the corresponding axis hole of this Oil seal cap, be provided with several flanges, it is characterized in that:

One end of this Oil seal cap be provided with a bulge loop that up extends, and on the corresponding sides ladder caulking groove of bulge loop, other is formed with a corresponding clamping groove, and axis hole closely contacts with flange, and this clamping groove engages mutually with bulge loop.

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