CN212992093U

CN212992093U - Dual dustproof and waterproof sealing device of waterproof fan motor shaft body end

Info

Publication number: CN212992093U
Application number: CN202021938207.0U
Authority: CN
Inventors: 李书长
Original assignee: Xuchang Dali Motor Manufacturing Co ltd
Current assignee: Xuchang Dali Motor Manufacturing Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-16
Anticipated expiration: 2030-09-08

Abstract

The utility model relates to a dual dustproof waterproof sealing device of waterproof fan motor shaft body end, wherein the center department of end cover is equipped with the seal groove, the center department of seal groove tank bottom surface is equipped with the through-hole, skeleton oil blanket a and skeleton oil blanket b all adopt rubber materials to make, set gradually in the seal groove, skeleton oil blanket a includes inner circle a and outer lane a, inner circle a is located the inside of outer lane a, connect through the go-between a integral type that is located its side between it, the intermediate position of inner circle a surface is equipped with annular groove a; the framework oil seal b comprises an inner ring b and an outer ring b, one end of the inner ring b is positioned inside the outer ring b, the other end of the inner ring b protrudes out of the outer ring b and is positioned at the side end of the outer ring b, the middle position of the outer surface of the inner ring b is integrally connected with the side end of the outer ring b through a connecting ring b, two sides of the outer surface of the inner ring b are provided with annular grooves b, and spring rings matched with the annular grooves b in structures are arranged in; the utility model has the advantages of reasonable structure, use and good sealing effect.

Description

Dual dustproof and waterproof sealing device of waterproof fan motor shaft body end

Technical Field

The utility model belongs to the technical field of the motor shaft is sealed, concretely relates to dual dustproof and waterproof sealing device of waterproof fan motor shaft body end.

Background

In the production and processing process of the motor, the connecting gap between the end cover and the shaft is mostly provided with the sealing ring, the sealing effect is achieved by utilizing the sealing ring, so that dust and water are prevented from entering the motor through the connecting gap between the end cover and the shaft to influence the service life of the motor, however, the existing sealing ring is simple in structure, is not in tight contact with the outer surface of the shaft and the inner groove wall of the sealing groove on the end cover, and is easy to deform and loosen during use, so that the sealing effect is influenced; therefore, in order to solve the above problems, it is necessary to develop a waterproof fan motor shaft end dual dustproof and waterproof sealing device with reasonable structure and good use and sealing effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, and provide a rational in infrastructure, use and sealed effectual waterproof fan motor shaft body end dual dustproof and waterproof sealing device.

The purpose of the utility model is realized like this: a double dustproof waterproof sealing device for a shaft body end of a waterproof fan motor comprises an end cover, a framework oil seal a and a framework oil seal b, wherein a sealing groove is formed in the center of the end cover, a through hole is formed in the center of the bottom surface of the sealing groove, the framework oil seal a and the framework oil seal b are both made of rubber materials, are located in the sealing groove and are in close contact with the inner groove wall of the sealing groove, the framework oil seal a is located on the inner side of the framework oil seal b and is in contact with the groove bottom surface of the sealing groove, the framework oil seal a comprises an inner ring a and an outer ring a, the inner ring a is located inside the outer ring a, the outer diameter of the inner ring a is smaller than the inner diameter of the outer ring a, the inner ring a and the outer ring; the framework oil seal b comprises an inner ring b and an outer ring b, the outer diameter of the inner ring b is smaller than the inner diameter of the outer ring b, one end of the inner ring b is located inside the outer ring b, the other end of the inner ring b protrudes out of the outer ring b and is located at the side end of the outer ring b, a connecting ring b is arranged in the middle of the outer surface of the inner ring b and is integrally connected with the side end of the outer ring b through the connecting ring b, annular grooves b are formed in two sides of the outer surface of the inner ring b, and spring rings matched with.

The outer surface of the outer ring a is in a round table shape, the diameter of the outer ring a is gradually increased from one end integrally connected with the connecting ring a to the outside, andthe inclined angle of the cross section of the outer ring a is 2^o。

The outer surface of the outer ring b is in a round table shape, the diameter of the outer ring b is gradually increased from one end integrally connected with the connecting ring b to the outside, and the inclination angle of the cross section of the outer ring b is 2^o。

The utility model has the advantages that: the utility model discloses a set up ring channel a in the intermediate position of inner circle a surface, set up ring channel b respectively in the both sides of inner circle b surface, and ring channel a and ring channel b's inside all sets up the spring coil rather than structure matched with, during the use, because of inner circle a's internal diameter and inner circle b's internal diameter all are less than the diameter of axle, in the process of adopting external force counter shaft to install and wear to establish, utilize the spring coil and rubber materials's elastic action, can make spring coil, inner circle a and inner circle b all atress open, and with the surface in close contact with of axle, thereby utilize skeleton oil blanket a and skeleton oil blanket b to realize dustproof and waterproof effect respectively; meanwhile, the annular grooves b are arranged on the two sides of the outer surface of the inner ring b, so that when the sealing device is used, the tightness of the connection between the inner ring b and the shaft can be greatly improved by matching the two annular grooves b and the two spring rings, and the sealing effect is improved; the utility model discloses well outer lane a and outer lane b's surface all is the round platform form, and the inclination of cross section is 2^oBy adopting the structure, when the framework oil seal a and the framework oil seal b are installed in the sealing groove on the end cover by using external force, the tightness of the connection between the outer ring a and the outer ring b and the inner groove wall of the sealing groove is improved, and the sealing effect is further improved; generally, the utility model has the advantages of rational in infrastructure, use and sealed effectual.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a plan view of the middle frame oil seal a of the present invention.

Fig. 3 is a sectional view of the front view of the middle frame oil seal a of the present invention.

Fig. 4 is a bottom view of the middle frame oil seal b of the present invention.

Fig. 5 is a sectional view of the front view of the middle frame oil seal b of the present invention.

In the figure: 1. the end cover 2, a framework oil seal a21, an inner ring a22, an outer ring a23, a connecting ring a24, an annular groove a3, a framework oil seal b31, an inner ring b32, an outer ring b33, a connecting ring b34, an annular groove b 4 and a spring ring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example (b): as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, a dual dustproof and waterproof sealing device for shaft end of motor shaft of waterproof fan comprises an end cover 1, a skeleton oil seal a2, and a skeleton oil seal b3, wherein a sealing groove is arranged at the center of the end cover 1, a through hole is arranged at the center of the bottom surface of the sealing groove, the skeleton oil seal a2 and the skeleton oil seal b3 are both made of rubber materials, are located in the sealing groove and are in close contact with the inner groove wall of the sealing groove, wherein the skeleton oil seal a2 is located at the inner side of the skeleton oil seal b3 and is in contact with the groove bottom surface of the sealing groove, the skeleton oil seal a2 comprises an inner ring a21 and an outer ring 22, the outer surface of the outer ring a22 is in the shape of a circular truncated cone, the diameter of one end integrally connected^oThe inner ring a21 is positioned inside the outer ring a22, the outer diameter of the inner ring a21 is smaller than the inner diameter of the outer ring a33, the inner ring a21 and the outer ring a33 are integrally connected through a connecting ring a23 positioned at the side end of the inner ring a21, and an annular groove a24 is formed in the middle of the outer surface of the inner ring a 21; the framework oil seal b3 comprises an inner ring b31 and an outer ring b32, the outer surface of the outer ring b32 is in a circular truncated cone shape, the diameter of the outer ring b32 is gradually increased from one end integrally connected with a connecting ring b33 to the outside, and the cross section of the outer ring b32 is inclined at an angle of 2^oThe outer diameter of the inner ring b31 is smaller than the inner diameter of the outer ring b32, one end of the inner ring b31 is located inside the outer ring b32, the other end of the inner ring b31 protrudes out of the outer ring b32 and is located at the side end of the outer ring b32, a connecting ring b33 is arranged in the middle of the outer surface of the inner ring b31 and is integrally connected with the side end of the outer ring b32 through a connecting ring b33, annular grooves b34 are formed in two sides of the outer surface of the inner ring b31, and spring rings 4 matched with the annular grooves a 24.

The utility model discloses when using, at first, utilize external force to install skeleton oil blanket a2 and skeleton oil blanket b3 to the seal groove of end cover 1 center department in, wherein skeleton oil blanket a2 is locatedWhen the framework oil seal a2 and the framework oil seal b3 are installed on the inner side of the framework oil seal b3 and are in contact with the groove bottom surface of the sealing groove, the outer surfaces of the outer ring a22 and the outer ring b32 are in a circular truncated cone shape, and the inclination angle of the cross section is 2^oBy utilizing the structure, the connection tightness between the outer ring a22 and the outer ring b32 and the inner groove wall of the sealing groove can be improved, so that the sealing effect is improved; then, the shaft is penetrated through the inner ring a21 and the inner ring b31 by external force, at the moment, because the inner diameter of the inner ring a21 and the inner diameter of the inner ring b31 are smaller than the diameter of the shaft, in the process of installing and penetrating the shaft by external force, the spring ring 4, the inner ring a21 and the inner ring b31 are stressed and expanded and are in close contact with the outer surface of the shaft by utilizing the elastic action of the spring ring 4 and rubber materials, so that the dustproof and waterproof effects are respectively realized by utilizing the framework oil seal a2 and the framework oil seal b3, and in addition, the two annular grooves b34 are arranged on the two sides of the outer surface of the inner ring b31, and when the shaft is used, the tightness of connection between the inner ring b31 and the shaft can be greatly improved by utilizing the matching of the two annular grooves b34 and the two spring; generally, the utility model has the advantages of rational in infrastructure, use and sealed effectual.

Claims

1. The utility model provides a dual dustproof waterproof sealing device of waterproof fan motor shaft body end, includes end cover, skeleton oil blanket an and skeleton oil blanket b, its characterized in that: the center of the end cover is provided with a sealing groove, the center of the bottom surface of the sealing groove is provided with a through hole, a framework oil seal a and a framework oil seal b are both made of rubber materials, are positioned in the sealing groove and are in close contact with the inner groove wall of the sealing groove, wherein the framework oil seal a is positioned on the inner side of the framework oil seal b and is in contact with the groove bottom surface of the sealing groove, the framework oil seal a comprises an inner ring a and an outer ring a, the inner ring a is positioned inside the outer ring a, the outer diameter of the inner ring a is smaller than the inner diameter of the outer ring a, the inner ring a and the outer ring a are integrally connected through a connecting ring; the framework oil seal b comprises an inner ring b and an outer ring b, the outer diameter of the inner ring b is smaller than the inner diameter of the outer ring b, one end of the inner ring b is located inside the outer ring b, the other end of the inner ring b protrudes out of the outer ring b and is located at the side end of the outer ring b, a connecting ring b is arranged in the middle of the outer surface of the inner ring b and is integrally connected with the side end of the outer ring b through the connecting ring b, annular grooves b are formed in two sides of the outer surface of the inner ring b, and spring rings matched with.

2. The waterproof fan motor shaft body end dual dustproof and waterproof sealing device of claim 1, characterized in that: the outer surface of the outer ring a is in a round table shape, the diameter of the outer ring a is gradually increased from one end integrally connected with the connecting ring a to the outside, and the inclination angle of the cross section of the outer ring a is 2^o。

3. The waterproof fan motor shaft body end dual dustproof and waterproof sealing device of claim 1, characterized in that: the outer surface of the outer ring b is in a round table shape, the diameter of the outer ring b is gradually increased from one end integrally connected with the connecting ring b to the outside, and the inclination angle of the cross section of the outer ring b is 2^o。