Novel middle pipe structure for mounting ball bearing

Abstract

The invention discloses a novel middle pipe structure for mounting a ball bearing. The novel middle pipe structure for mounting the ball bearing comprises a middle pipe, the middle pipe is arranged in a stationary blade hub, one end of the middle pipe is fixedly provided with a first ball bearing through a binder in a bonding manner, and the other end of the middle pipe is fixedly provided with a second ball bearing through a binder in a bonding manner; one end of the middle pipe is provided with a first radial supporting circular ring surface, the other end of the middle pipe is provided with a second radial supporting circular ring surface, a first groove is formed in the first radial supporting circular ring surface, and a first communicating cavity used for accommodating the binder is formed among the first groove, the first ball bearing and the middle pipe; and a second groove is formed in the second radial supporting circular ring surface, and a second communicating cavity used for accommodating the binder is formed among the second groove, the second ball bearing and the middle pipe. According to the novel middle pipe structure for mounting the ball bearing, the concentricity of the bearing is improved, the service life of the fan is prolonged, the fixing technology of the ball bearing and the middle pipe is simplified, and the assembling cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fan mid-pipe structure improvement, in particular to a novel mid-pipe structure for installing ball bearings. Background technique [0002] At present, the size of the electronic equipment system is shrinking day by day. The cooling fan needs to provide the highest heat dissipation performance in the limited installation space to meet the market demand. Therefore, the industry has more and more demand for high-speed fans. In order to reduce the overall To reduce the vibration and ensure the life of the high-speed fan, the high-speed fan generally adopts the assembly process of ball bearing outer ring and middle tube fixed. [0003] There are generally two fixing methods for fixing the middle tube of the high-speed fan and the outer ring of the ball bearing: one is to fix by adhesive bonding; the other is to fix by interference fit. Using adhesive bonding and fixing technology, firstly, a layer of adhesiv...

AI Technical Summary

Problems solved by technology

Using adhesive bonding and fixing technology, firstly, a layer of adhesive is applied on the inner surface of the middle tube, and then the ball bearing is installed inside the middle tube, and the ball bearing is fixed inside the middle tube by the adhesive, however Using the above assembly method, the adhesive may pass through the dust cover on the ball bearing and enter the interior of the ball bearing, which will reduce the life of the fan or cause the fan to fail

Using the assembly process of interference fit, first of all, the realization of interference fit requires more production equipment, the assembly is more complicated, and the production cost is higher. Then, the concentricity of the upper and lower ball bearings after assembly is greatly affected by the middle tube. , concentricity is difficult to guarantee

[0004] The assembly process of the above two structures can no longer meet the market's fixed demand for ball bearings in high-speed fans

Images