CN215498519U

CN215498519U - IP67 protection grade fan motor

Info

Publication number: CN215498519U
Application number: CN202121354680.9U
Authority: CN
Inventors: 陆建华; 王伟; 秦才群
Original assignee: Leibo Electric Jiaxing Co ltd
Current assignee: Leibo Electric Jiaxing Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-11
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to the technical field of electromechanical equipment, in particular to an IP67 protection grade fan motor, which comprises a front end cover, a fan blade and a motor shaft, wherein the motor shaft is rotatably arranged in the front end cover, the fan blade is fixed at the free end of the motor shaft, the fan blade also comprises a water blocking cover, the water blocking cover is fixed on the motor shaft and is positioned between the fan blade and the front end cover, at least one annular bulge is axially extended on the end surface of the front end cover, an annular concave cavity matched with the annular bulge is arranged on the matching surface of the water blocking cover and the front end cover, the annular bulge extends into the annular concave cavity, the matching surface of the water blocking cover and the front end cover is matched through multiple grooves and bulges, the fan blade and the water blocking cover rotate together with the motor shaft to form a labyrinth structure, a good sealing effect is achieved, when a small amount of water enters into the fan blade, the water can flow out from the lower part, and the water blocking cover is designed to protrude without influencing the internal structure of the motor, and the fan blade and the water retaining cover are convenient to install, reliable in connection, convenient for continuous production and high in assembly efficiency.

Description

IP67 protection grade fan motor

Technical Field

The utility model relates to the technical field of electromechanical equipment, in particular to an IP67 protection grade fan motor.

Background

General motor adopts the skeleton oil blanket to do the protection of motor, prevents inside dust or impurity entering motor, can only reach IP44 protection level, but the fan motor is because higher protection and stability in use requirement, especially to waterproof performance's needs, IP44 protection level can't satisfy the market demand, needs further promotion fan motor's protection level.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the existing problems, the utility model provides an IP protection level fan motor.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a IP protection level fan motor, includes front end housing, fan blade and motor shaft, the motor shaft rotates the installation in the front end housing, the fan blade is fixed on the free end of motor shaft, still includes the manger plate lid, the manger plate lid is fixed on the motor shaft, and is located between fan blade and the front end housing, axial extension is equipped with at least one annular arch on the terminal surface of front end housing, be equipped with on the fitting surface of manger plate lid and front end housing with annular protruding assorted annular cavity, annular arch stretches into in the annular cavity.

Specifically, be equipped with the manger plate lid on the front end housing, and the fitting surface of manger plate lid and front end housing passes through multiple recess, protruding cooperation, and fan blade, manger plate lid rotate together with the motor shaft, form labyrinth seal structure, play fine sealed effect, and a small amount of water is entered into, can flow from the below, and the protruding design of manger plate lid does not influence motor inner structure simultaneously, and fan blade and manger plate lid simple to operate, connect reliably, the continuous production of being convenient for, assembly efficiency is high.

According to another embodiment of the utility model, the motor shaft is rotatably mounted in the front end cover through a bearing, an outer ring of the bearing is fixed in the front end cover, an inner ring of the bearing is fixed on the motor shaft, and the bearing is a contact type sealing bearing. Through setting up contact seal bearing, further improve the sealed effect of motor.

According to another embodiment of the utility model, the sealing device further comprises a rear end cover, a positioning step is arranged on the opening end surface of the rear end cover, the opening end of the front end cover is fixed on the positioning step, and a sealing ring is arranged on the contact surface of the rear end cover and the front end cover. And the sealing performance between the rear end cover and the front end cover is improved by utilizing step matching and a sealing ring.

According to another embodiment of the utility model, the rear end cover is provided with a leading-out wire and a leading-out hole for the leading-out wire to penetrate through, the leading-out hole is provided with a protective coil, the protective coil is coated on the leading-out wire, and the outer circle of the protective coil is in interference fit with the leading-out hole. The arrangement of the protective coil improves the sealing performance of the gap between the outgoing line and the rear end cover.

According to another embodiment of the utility model, the fan blade is further provided with a free end of the motor shaft which penetrates through the fan blade and is in threaded connection with a lock nut. The fan blade and the water blocking cover are simultaneously fastened through the locking nut, and assembly is facilitated.

The front end cover is provided with the water retaining cover, the matching surface of the water retaining cover and the front end cover is matched through multiple grooves and protrusions, the fan blade and the water retaining cover rotate together with the motor shaft to form a labyrinth seal structure, a good sealing effect is achieved, a small amount of water can flow out from the lower part when entering, meanwhile, the water retaining cover is designed in a protruding mode, the internal structure of the motor is not affected, and the fan blade and the water retaining cover are convenient to install, reliable in connection, convenient to produce continuously and high in assembly efficiency.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view at X in FIG. 1;

fig. 3 is an enlarged view at Y in fig. 1.

In the figure, a rear end cover 1, a positioning step 101, a leading-out hole 102, a front end cover 2, an annular bulge 201, a fan blade 3, a motor shaft 4, a leading-out wire 5, a protective coil 6, a bearing 7, a water retaining cover 8, an annular concave cavity 801, a sealing ring 9 and a locking nut 10.

Detailed Description

As shown in fig. 1-3, which are schematic structural diagrams of the present invention, an IP67 protection-level fan motor includes a front end cover 2, a fan blade 3, a motor shaft 4, wherein the motor shaft 4 is rotatably installed in the front end cover 2, the fan blade 3 is fixed at the free end of the motor shaft 4, and the fan motor is characterized by further including a water blocking cover 8, the water blocking cover 8 is fixed on the motor shaft 4 and located between the fan blade 3 and the front end cover 2, at least one annular protrusion 201 is axially extended from the end surface of the front end cover 2, an annular concave cavity 801 matched with the annular protrusion 201 is provided on the matching surface of the water blocking cover 8 and the front end cover 2, and the annular protrusion 201 extends into the annular concave cavity 801.

Preferably, the motor shaft 4 is rotatably mounted in the front end cover 2 through a bearing 7, an outer ring of the bearing 7 is fixed in the front end cover 2, an inner ring of the bearing 7 is fixed on the motor shaft 4, and the bearing 7 is a contact type sealing bearing.

Preferably, the sealing device further comprises a rear end cover 1, a positioning step 101 is arranged on the opening end face of the rear end cover 1, the opening end of the front end cover 2 is fixed on the positioning step 101, and a sealing ring 9 is arranged on the contact face of the rear end cover 1 and the front end cover 2.

Preferably, the rear end cover 1 is provided with an outgoing line 5 and an outgoing hole 102 through which the outgoing line 5 passes, the outgoing hole 102 is provided with a protective coil 6, the protective coil 6 is coated on the outgoing line 5, and the outer circle of the protective coil is in interference fit with the outgoing hole 102.

Preferably, the free end of the motor shaft 4 penetrates through the fan blade 3, and is in threaded connection with a locking nut 10.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides an IP67 protection level fan motor, includes front end housing (2), fan blade (3) and motor shaft (4), motor shaft (4) rotate the installation in front end housing (2), fan blade (3) are fixed on the free end of motor shaft (4), characterized by still includes water blocking cover (8), water blocking cover (8) are fixed on motor shaft (4), and are located between fan blade (3) and front end housing (2), axial extension is equipped with at least one cyclic annular arch (201) on the terminal surface of front end housing (2), be equipped with on the fitting surface of water blocking cover (8) and front end housing (2) with cyclic annular protruding (201) assorted cyclic annular cavity (801), cyclic annular arch (201) stretch into in cyclic annular cavity (801).

2. The IP67 protection grade fan motor according to claim 1, wherein the motor shaft (4) is rotatably mounted in the front end cover (2) through a bearing (7), the outer ring of the bearing (7) is fixed in the front end cover (2), the inner ring of the bearing (7) is fixed on the motor shaft (4), and the bearing (7) is a contact type sealing bearing.

3. The IP67 protection grade fan motor according to claim 1, further comprising a rear end cover (1), wherein a positioning step (101) is arranged on an opening end face of the rear end cover (1), the opening end of the front end cover (2) is fixed on the positioning step (101), and a sealing ring (9) is arranged on a contact face of the rear end cover (1) and the front end cover (2).

4. The IP67 protection grade fan motor according to claim 3, wherein the rear end cover (1) is provided with an outgoing line (5) and an outgoing hole (102) for penetrating out of the outgoing line (5), the outgoing hole (102) is provided with a protective coil (6), the protective coil (6) is coated on the outgoing line (5), and the excircle of the protective coil is in interference fit with the outgoing hole (102).

5. The IP67 protection grade fan motor of claim 1, wherein the free end of the motor shaft (4) passes through the fan blade (3) and is connected with a lock nut (10) in a threaded manner.