Abrasion-proof shaft outer rotor fan

Abstract

The utility model provides an anti-abrasion shaft outer rotor fan, which relates to the technical field of fans and comprises a rotor body, a stator is sleeved on the surface of the rotor body, a motor shaft is mounted in the rotor body, a conical gasket is sleeved on the surface of the motor shaft and positioned on the inner side of an anti-slip bushing, and the inner side of the motor shaft is provided with an anti-slip bushing. The portion, close to one end, of the surface of the motor shaft is sleeved with an anti-slip lining. According to the utility model, the motor shaft is designed as the structure shown in the figure 3, the left surface is of a step structure and is in interference fit with the left motor shaft, so that the effect of effectively solving the slipping of the motor shaft can be achieved, the right surface is designed as a polygonal structure to be matched with the anti-slip bushing and can be pressed into the right motor shaft, the outer circle is in interference fit with the right motor shaft, and the inner hole is a polygonal hole; in addition, the effect of preventing the shaft and the motor shaft from slipping can also be achieved through the polygonal tiny clearance fit of the shaft, and therefore the effect of prolonging the service life of the fan can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially relates to a kind of anti-wear shaft outer rotor fan. BACKGROUND

[0002] The single-shaft extension outer rotor body fan structure on current market is generally that the shaft is pressed in the middle of rotor body impeller, and the shaft and rotor body are interference fit;Stator and end cover are pressed and fitted, motor shaft is pressed and fitted on end cover, and they are all interference fit.Two conical washers are placed opposite, and have certain elasticity after compression, and are used to adjust axial gap.Clip spring is used to fix shaft to prevent falling off.

[0003] Since axial gap needs to be adjusted, the structure is designed as shaft and motor shaft gap fit.This structure has a defect, that is, in high-speed operation process, shaft and motor shaft inner ring will slip, resulting in shaft wear, and the result is that stator and rotor body iron core rub and fail, which seriously affects fan life. INVENTION CONTENTS

[0004] The utility model mainly provides a kind of anti-wear shaft outer rotor fan of effectively preventing shaft and motor shaft from slipping.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-wear shaft outer rotor fan, comprising: a rotor body, the surface of the rotor body is sleeved with a stator, the inside of the rotor body is installed with a motor shaft, the surface of the motor shaft and inside the anti-slip bushing are sleeved with a conical washer, and the surface of the motor shaft and close to one end are sleeved with an anti-slip bushing;Through the design of motor shaft structure, Figure Three The left side is a stepped structure, interference fit with the left motor shaft, which can effectively solve the effect of motor shaft slipping, and the right side is designed as a polygonal structure and matched with the anti-slip bushing, which can be pressed into the right motor shaft, the outer circle is interference fit with the right motor shaft, and the inner hole is a polygonal hole, which is matched with the small gap of the polygonal shaft, which can also prevent the shaft and motor shaft from slipping, thereby improving the service life of the fan.

[0006] Preferably, a clamping groove is formed in the surface of the motor shaft and close to one end, and a clip spring is installed in the clamping groove of the surface of the motor shaft, which can prevent the anti-slip bushing from being automatically removed.

[0007] Preferably, an end cover is installed at one end of the rotor body and the stator, which can cover one end of the device.

[0008] Preferably, the one end of the motor shaft is a stepped structure, and the other end of the motor shaft is a polygonal structure, which can effectively solve the effect of motor shaft slipping.

[0009] Preferably, the outer wall of the anti-skid bushing is circular, and the inner hole of the anti-skid bushing is a polygonal hole, through the above setting, the anti-skid bushing can be conveniently sleeved on the motor shaft and the skid can be prevented.

[0010] Compared with the prior art, the anti-skid bushing structure has the advantages and positive effects that,

[0011] In the utility model, through the motor shaft design as Figure Three The right side is designed as a polygonal structure and cooperates with the anti-skid bushing, can be pressed into the right motor shaft, the outer circle is in interference fit with the right motor shaft, the inner hole is a polygonal hole, cooperates with the small gap of the polygonal shaft, and the effect of preventing the shaft and the motor shaft from skidding can also be achieved, so that the service life of the fan can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 An overall structure perspective view of the anti-abrasion shaft outer rotor fan is provided for the utility model;

[0013] Figure 2 An anti-skid bushing structure view of the anti-abrasion shaft outer rotor fan is provided for the utility model;

[0014] Figure 3 A motor shaft structure view of the anti-abrasion shaft outer rotor fan is provided for the utility model.

[0015] Legend: 1, rotor body; 2, stator; 3, motor shaft; 4, conical washer; 5, anti-skid bushing; 6, snap spring; 7, end cover. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, therefore, the utility model is not limited to the specific embodiments disclosed in the following description.

[0018] Please refer to Figures 1-3The utility model provides a technical scheme: an anti-abrasion shaft outer rotor fan, include: rotor body 1, the surface of rotor body 1 is equipped with stator 2, the inside installation of rotor body 1 has motor shaft 3, the surface of motor shaft 3 and located inside anti -skid bushing 5 is equipped with conical washer 4, the surface of motor shaft 3 and close to one end is equipped with anti -skid bushing 5, through above -mentioned setting, can play the effect that the anti -skid bushing 5 is equipped in the six side structure on the one end of motor shaft 3 can effectively prevent the skid.

[0019] As Figure 3 Shown, the surface of motor shaft 3 and close to one end is equipped with the clamping slot, the surface clamping slot inside installation of motor shaft 3 has the clamping spring 6, through above -mentioned setting, can play the effect that the clamping spring 6 prevents the anti -skid bushing 5 from automatically taking off.

[0020] As Figure 1 Shown, the one end installation of rotor body 1 and stator 2 has end cover 7, through above -mentioned setting, can play the effect of covering the one end of the device.

[0021] As Figure 3 Shown, the one end step structure of motor shaft 3, the other end of motor shaft 3 is polygonal structure, through above -mentioned setting, can play the effect that the effective solution motor shaft 3 slips.

[0022] As Figure 2 Shown, the outer wall of anti -skid bushing 5 is circular, and the inner hole of anti -skid bushing 5 is polygonal hole, through above -mentioned setting, can play the effect that the anti -skid bushing 5 is convenient for being set on motor shaft 3 and prevents the skid.

[0023] The use method and working principle of the device: through the design as Figure 3 Structure of motor shaft 3, the left side is step structure, and the left motor shaft 3 is interference fit, can play the effect that the effective solution motor shaft 3 slips, and the right side is designed into polygonal structure and cooperates with anti -skid bushing 5, can be pressed into the right motor shaft 3, and the outer circle is interference fit with the right motor shaft 3, and the inner hole is polygonal hole, and cooperates with the polygonal small gap of shaft, also can play the effect that the shaft and motor shaft 3 slip, to improve the service life of fan.

[0024] The above, only is the preferred embodiment of the utility model, is not the other forms of limit to the utility model, any familiar professional technical personnel can utilize the technical content disclosed above to change or reform as equivalent embodiment of equivalent change and apply to other fields, but any simple modification, equivalent change and reform made to the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. An abrasion resistant, out-of-shaft rotor fan characterized by, Include: The rotor body (1) is sleeved with a stator (2) on the surface, a motor shaft (3) is installed inside the rotor body (1), a tapered washer (4) is sleeved on the surface of the motor shaft (3) inside the anti-slip bushing (5), and an anti-slip bushing (5) is sleeved on the surface of the motor shaft (3) near one end.

2. A abrasion resistant overhung rotor fan as claimed in claim 1 wherein: A clamping groove is formed on the surface of the motor shaft (3) near one end, and a clamping spring (6) is installed inside the clamping groove on the surface of the motor shaft (3).

3. A abrasion resistant overhung rotor fan as claimed in claim 1 wherein: An end cover (7) is installed at one end of the rotor body (1) and the stator (2).

4. A abrasion resistant overhung rotor fan as claimed in claim 1 wherein: The motor shaft (3) has a stepped structure at one end, and the other end is a polygonal structure.

5. A abrasion resistant overhung rotor fan as claimed in claim 1 wherein: The outer wall of the anti-slip bushing (5) is circular, and the inner hole of the anti-slip bushing (5) is a polygonal hole.

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