CN2394035Y

CN2394035Y - Pivot jointed with slide bearing

Info

Publication number: CN2394035Y
Application number: CN 99244286
Authority: CN
Inventors: 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1999-09-10
Filing date: 1999-09-10
Publication date: 2000-08-30
Anticipated expiration: 2009-09-10

Abstract

The utility model relates to a small rotating shaft which improves the condition of friction and reduction abrasion. The rotating shaft pivoted with a slide bearing comprises more than one supporting parts and non-positive circular arc-surfaces. The utility model is characterized in that the rotating supporting part of the supporting rotating shaft and a shaft hole of a non-ball bearing is provided with a positive circular arc-surface which is bigger than one second the circumference of the rotating supporting part. The friction area between the rotating shaft and the wall of the shaft hole is enabled to be smaller. Therefore, the effect of improving the friction and reducing the abrasion is achieved. The utility model is used for fans, small motors, etc.

Description

Be articulated in the rotating shaft of sliding bearing

The utility model relates to a kind of rotating shaft that is used for small-sized fans, motor etc.

The existing rotating shaft that is used for small-sized fan, motor etc., the bearing of its supporting, generally can be divided into ball bearing and non-ball bearing, it is sliding bearing, the former mainly utilizes ball to make smooth and easy running, the latter mainly utilizes high-abrasive material, as copper bearing, oil-impregnated bearing, self-lubricating bearing or the like, and the non-ball bearing of the guest of general designation.360341 " fan structure improvement " patent of having announced, it extends a cap downwards by fan blade, cap central authorities establish a rotating shaft, blower-casting central authorities establish the axle bed of hollow, in order to establish rotating shaft, form a circular rabbet between cap and rotating shaft, also establish circular rabbet in the rotating shaft, bearing housing is located at rotating shaft and is formed the first oil storage portion outward, axle bed is arranged with several ditches and forms the second oil storage portion in its inner rim with respect to the bearing place, lubricates though this lubricated setting has improved, but owing to form the gap, and because the rotating shaft upper and lower end is the positive circular continuous continuous friction that also forms.

The purpose of this utility model provides a kind of rotating shaft that is articulated in sliding bearing of improving friction, reducing to wear and tear of helping.

The purpose of this utility model is achieved in that the rotating shaft that is articulated in sliding bearing, and it comprises an above support part and non-positive arc surface, it is characterized in that: this support rotating shaft has just round cambered surface greater than 1/2 circumference in the support part of the axis hole of sliding bearing rotation.

Above-mentioned design mainly is to make between rotating shaft and axis hole wall to have less friction area, reaches the effect of improving friction, reducing to wear and tear thus.

Below by drawings and Examples the utility model is described further again:

Fig. 1 is the utility model first embodiment's stereogram;

Fig. 2 is that the utility model first embodiment combines plan view with non-ball class bearing;

Fig. 3 is a 3-3 sectional view among Fig. 2;

Fig. 4 is that the utility model first embodiment uses at the heat-dissipating fan schematic representation;

Fig. 5 is the utility model second embodiment's stereogram;

Fig. 6 is that the utility model second embodiment combines plan view with non-ball class bearing;

Fig. 7 is a 7-7 sectional view among Fig. 6;

Fig. 8 is the utility model the 3rd embodiment's stereogram;

Fig. 9 is that the utility model the 3rd embodiment combines plan view with non-ball class bearing;

Figure 10 is a 10-10 sectional view among Fig. 9;

Shown in Fig. 1-4: the utility model comprises an above support part 11 and non-positive arc surface 12, it is characterized in that: this support rotating shaft 10 has just round cambered surface greater than 1/2 circumference in the support part 11 of axis hole 21 rotation of sliding bearing 20.For making rotating shaft 10 revolve a thing more firm combination is arranged, wherein, rotating shaft 10 1 ends form groove 13 or annular groove 14, and the end in addition of rotating shaft forms top-joining part 15.Wherein, the in addition end of rotating shaft 10 form with by the taper of apical grafting thing apical grafting.Wherein, this non-positive arc surface 12 forms the plane.

Shown in Fig. 5-7: wherein, two 31a of support part, 31b are established in rotating shaft 10, the 31a of support part, 31b are positive arc surface, support rotating shaft 30 to rotate in axis hole 21, and rotating shaft 30 itself forms non-positive arc surface 32, wherein, the 31a of support part, 31b itself are provided with cutting portion 36, and wherein, non-positive arc surface 32 can become isogonism to lay according to the center of rotating shaft 30, rotating shaft 30 1 ends are established groove 33 or annular groove 34, and end forms top-joining part 35 in addition.

Shown in Fig. 8-10: wherein, two above support parts 41 are established in this rotating

shaft

40,41 of two support parts are provided with non-positive arc surface 42, support axis hole 21 rotations of rotating shaft 40 by supporting portion 41 at non-ball class bearing, can reduce friction and wear and tear, increase the service life, and can make easy to processly, cost of production reduces.

Claims

1, be articulated in the rotating shaft of sliding bearing, it comprises an above support part and non-positive arc surface, it is characterized in that: this support rotating shaft has just round cambered surface greater than 1/2 circumference in the support part of the axis hole of sliding bearing rotation.

2, the rotating shaft that is articulated in sliding bearing as claimed in claim 1 is characterized in that: wherein, rotating shaft one end forms groove or annular groove, and the end in addition of rotating shaft forms top-joining part.

3, the rotating shaft that is articulated in sliding bearing as claimed in claim 1 is characterized in that: wherein, the in addition end of rotating shaft form with by the taper of apical grafting thing apical grafting.

4, the rotating shaft that is articulated in sliding bearing as claimed in claim 1 is characterized in that: wherein, this non-positive arc surface forms the plane.

5, the rotating shaft that is articulated in sliding bearing as claimed in claim 1 is characterized in that: wherein, two support parts are established in rotating shaft, and support part is positive arc surface, support rotating shaft to rotate in axis hole, and rotating shaft itself forms non-positive arc surface.

6, the rotating shaft that is articulated in sliding bearing as claimed in claim 1, it is characterized in that: wherein, itself is provided with cutting portion support part.

7, the rotating shaft that is articulated in sliding bearing as claimed in claim 1 is characterized in that: wherein, non-positive arc surface becomes isogonism to lay according to the center of rotating shaft.