CN214506735U

CN214506735U - Motor with high waterproof performance

Info

Publication number: CN214506735U
Application number: CN202120056971.3U
Authority: CN
Inventors: 张雷; 肖伟
Original assignee: Panasonic Motor Hangzhou Co Ltd
Current assignee: Panasonic Motor Hangzhou Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-26
Anticipated expiration: 2031-01-11

Abstract

The utility model provides a motor with high waterproof performance, its technical scheme who solves technical problem includes motor body and rotor, and motor body has the rotor chamber of installation rotor, and the rotor is including the pivot that stretches out motor body, be equipped with first bearing between pivot and the motor body, and motor body one end is equipped with outer end cover, is formed with the installation cavity that holds the circuit board between outer end cover and the motor body, its characterized in that, motor body inside be equipped with the interior end cover of suit in the pivot, interior end cover is sealed with rotor chamber and installation cavity and is kept apart, be equipped with the axle sleeve of suit in the pivot between interior end cover and the outer end cover, the one end of axle sleeve with interior end cover sealing connection, the other end of axle sleeve with outer end cover sealing connection; the utility model discloses an interior end cap and the telescopic design of axle, overall structure can realize the static seal of circuit board and keep apart, has improved the waterproof grade of motor.

Description

Motor with high waterproof performance

Technical Field

The utility model belongs to the technical field of the motor is waterproof, especially a high waterproof performance's motor.

Background

The existing motor waterproof structure generally adopts external waterproof rubber to protect the extension part of a motor shaft, and the joint of an end cover and a motor body is coated with sealant to meet the waterproof requirement of the motor, the mode generally can only achieve the anti-splash or anti-spray (meeting the requirement of international IPX4 or IPX 5), the waterproof performance is weak, and the interior of the motor is easy to be soaked in water to cause the burning of a circuit board; however, when the motor is immersed in water, such waterproof standard is not up to the protection requirement, in order to ensure that the motor can be used when immersed in water, the waterproof grade of the motor needs to reach IPX7, and the structure of the existing motor capable of meeting the waterproof grade is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high waterproof performance's motor to solve the not good problem of motor seal structure water-proof effects among the prior art.

The utility model provides a motor of high waterproof performance, its technical scheme who solves technical problem includes motor body and rotor, and motor body has the rotor chamber of installation rotor, and the rotor is including stretching out motor body's pivot, be equipped with first bearing between pivot and the motor body, motor body one end is equipped with outer end cover, is formed with the installation cavity that holds the circuit board between outer end cover and the motor body, a serial communication port, motor body inside be equipped with the suit at the epaxial interior end cover of pivot, interior end cover is with rotor chamber and installation cavity seal isolation, be equipped with the suit at the epaxial axle sleeve of pivot between interior end cover and the outer end cover, axle sleeve's one end with interior end cover sealing connection, the axle sleeve's the other end with outer end cover sealing connection.

Preferably, the outer side wall of the inner end cover is tightly attached to the inner side wall of the rotor cavity to form a seal.

Preferably, the outer side wall of the inner end cover extends along the axial direction to form an annular sealing band.

Preferably, one end face of the inner end cover is tightly attached to the end face of the rotor cavity to form sealing.

Preferably, the shaft sleeve is in sealing connection with the inner end cover through a first sealing ring.

Preferably, the first sealing ring is arranged at the joint of the end surface of the shaft sleeve and the inner end cover; or the first sealing ring is arranged at the joint of the outer side wall of the shaft sleeve and the inner end cover.

Preferably, the shaft sleeve and the outer end cover are in sealing connection through a second sealing ring.

Preferably, the second sealing ring is installed at the joint of the end surface of the shaft sleeve and the outer end cover; or the second sealing ring is arranged at the joint of the outer side wall of the shaft sleeve and the outer end cover.

Preferably, a second bearing is arranged in the inner end cover or the shaft sleeve or the outer end cover.

Preferably, one end of the rotating shaft extends out of the motor body or both ends of the rotating shaft extend out of the motor body; the inner end cover is made of metal materials which can penetrate through a magnetic field.

In conclusion, the application the technical scheme of the utility model, following beneficial effect has at least:

1. the inner end cover is additionally arranged in the motor body, and the circuit board and the rotor cavity can be well isolated by the fit arrangement of the inner end cover and the inner side wall of the rotor cavity, so that water in the rotor cavity is prevented from entering the mounting cavity to damage the circuit board;

2. by designing the shaft sleeve structure, one end of the shaft sleeve is in sealing connection with the inner end cover, and the other end of the shaft sleeve is in sealing connection with the outer end cover, so that the rotating shaft is sealed and isolated from the circuit board in the mounting cavity, and moisture entering from the matching gap of the rotating shaft from the outside cannot enter the mounting cavity to damage the circuit board;

3. when the bearing is actually used, the inner end cover and the shaft sleeve play a role in sealing, and meanwhile, the bearing can be used for supporting the rotor and the second bearing, so that the whole structure is more compact and stable;

4. the utility model discloses in be sealing connection between end cover and rotor chamber, interior end cover and axle sleeve, axle sleeve and the outer end cover static seal, relative dynamic seal has better sealed effect.

5. The annular sealing belt with a certain width is designed on the outer side of the inner end cover, so that the contact width of the inner end cover and the inner side wall of the rotor cavity can be increased, and the sealing effect is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of the overall appearance of the motor of the present invention;

FIG. 2 is a cross-sectional view of the present invention in FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2B according to the present invention;

FIG. 5 is a cross-sectional view of the inner end cap structure of the present invention;

fig. 6 is a sectional view of the shaft sleeve structure of the present invention.

In the figure; 1-a motor body; 2-a rotor; 3-a rotor cavity; 4-a rotating shaft; 5-a first bearing; 6-outer end cover; 7-mounting a cavity; 8-a circuit board; 9-inner end cap; 10-a shaft sleeve; 11-an annular sealing band; 12-a first sealing ring; 13-a second sealing ring; 14-a second bearing; 15-first outer edge surface, 16-second outer edge surface, 17-wire sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a motor with high waterproof performance, as shown in figures 1 and 2, comprising a motor body 1 and a rotor 2, wherein the motor body 1 is provided with a rotor cavity 3 for mounting the rotor 2, the rotor 2 comprises a rotating shaft 4 extending out of the motor body 1, a first bearing 5 is arranged between the rotating shaft 4 and the motor body 1, one end of the motor body 1 is provided with an outer end cover 6, and a mounting cavity 7 for accommodating a circuit board 8 is formed between the outer end cover 6 and the motor body 1, the utility model designs an inner end cover 9 sleeved on the rotating shaft 4 inside the motor body 1, and designs a shaft sleeve 10 sleeved on the rotating shaft 4 between the inner end cover 9 and the outer end cover 6 inside the motor body 1, because the rotating shaft 4 needs to rotate when in use, the connection of the inner end cover 9, the shaft sleeve 10 and the rotating shaft 4 inevitably has gaps, because the rotating shaft 4 extends out of the motor body 1, the outer water that leads to outside can get into inside motor body 1 along the outer fringe of pivot 4, and then gets into in rotor chamber 3 or the installation cavity 7, and the circuit board 8 of motor is installed in installation cavity 7, and this kind of entering of water can lead to circuit board 8's damage, the utility model discloses a connect the position with interior end cap 9 and rotor chamber 3 and seal up, realize rotor chamber 3 and installation cavity 7 sealed isolation, and with the one end of axle sleeve 10 and interior end cap 9 sealing connection, the other end and the outer end cap 6 sealing connection of axle sleeve 10, motor body 1 like this, interior end cap 9, axle sleeve 10 and outer end cap 6 form the sealed isolated space with pivot 4 and rotor chamber 3 jointly, installation cavity 7 promptly to circuit board 8 can not lead to damaging because of the entering of water.

The utility model discloses in form the component of installation cavity 7, be inactive part like motor body 1, interior end cap 9, axle sleeve 10 and outer end cap 6, form static seal, have good sealed effect.

Specifically, the inner end cover 9 is a structure for sealing and isolating the rotor cavity 3 and the mounting cavity 7, one embodiment of the present invention is that the outer side wall of the inner end cover 9 is tightly attached to the inner side wall of the rotor cavity 3 to form a seal, as shown in fig. 2 and 4, in the specific production, the inner end cover 9 is mounted in the rotor cavity 3, and the inner side wall of the inner end cover 9 and the inner side wall of the rotor cavity 3 form an interference fit or a transition fit; in this embodiment, in order to improve the sealing effect, as shown in fig. 5, an annular sealing band 11 is formed on the outer side wall of the inner end cover 9 in an extending manner in the axial direction, and the design of the annular sealing band 11 can increase the width of the contact surface of the inner end cover 9 and the inner side wall of the rotor cavity 3, so as to improve the sealing effect; another embodiment of the sealing is that a sealing is formed by tightly attaching one end surface of the inner end cap 9 to the end surface of the rotor cavity 3, at this time, the inner end cap 9 is equivalently installed outside the rotor cavity 3, when the sealing is specifically installed, the matching of the shaft sleeve 10 and the outer end cap 6 forms extrusion force to tightly attach the end surface of the inner end cap 9 to the end surface of the rotor cavity 3, so that an end surface sealing is formed, and the sealing can be performed by matching with a screw and a sealing strip, so that a better sealing effect is achieved.

Regarding the sealing connection between the shaft sleeve 9 and the inner end cap 9, the present invention provides the following two embodiments; firstly, the shaft sleeve 10 is sealed by a first sealing ring 12 arranged at the joint of the end surface of the shaft sleeve and the inner end cover 9, as shown in figure 3; secondly, the first sealing ring 12 is arranged at the joint of the outer side wall (as the second outer edge surface 16 in fig. 6) of the shaft sleeve 10 and the inner end cover 9; first sealing washer 12 can select according to actual parameter when the lectotype, the utility model discloses select for use O type sealing washer.

Correspondingly, regarding the sealing connection between the shaft sleeve 9 and the inner end cap 9, the present invention provides the following two embodiments; firstly, a second sealing ring 13 is arranged at the joint of the end face of the shaft sleeve 10 and the outer end cover 6, as shown in fig. 3; secondly, a second sealing ring 13 is mounted at the joint of the outer side wall (as the first outer edge surface 15 in fig. 6) of the shaft sleeve 10 and the outer end cover 6.

For different sealing positions on the above-mentioned shaft sleeve 10, in the specific design, the sealing ring can be installed by designing protruding shaft extension sections on two end faces of the shaft sleeve 10, as shown in fig. 6; or may be mounted directly on the outer edge of the shaft sleeve 10.

The utility model discloses well inner end cap 9 can also be used for supporting rotor 2's rotation except playing sealed effect, as shown in figure 2, first bearing 5 is installed and is formed the support in this internal formation of motor, and second bearing 14 is installed and is formed the support in inner end cap 9, makes the holistic structure of motor compacter, rotates more stably, and when practical application, second bearing 14 also can install in axle sleeve 10 or outer end cap 6.

The utility model is suitable for a single-shaft or double-shaft motor, in the single-shaft motor, the waterproof sealing structure mentioned above is arranged at one end of the rotating shaft, which extends out; in the biax motor, only need in one end adopt above-mentioned waterproof sealing structure can, in order to realize better safeguard effect in addition, when inside circuit board 8 is connected with external wire, adopt waterproof wire sleeve 17 to penetrate the sealed of wire.

The utility model discloses in order to realize the magnetic field that the hall original paper on the circuit board 8 can respond to the rotor, and then control rotor pivoted purpose, the material of interior end cap 9 is selected for the magnetic field penetrable and have the metal material of certain intensity, non-magnetic material such as copper, aluminium, 304 stainless steel.

By the above embodiments; the utility model discloses a motor inner end cover 9 is designed to seal and separate the motor rotor cavity 3 and the circuit board 8, and the inner end cover 9 can be used for supporting the rotor 2; in addition, a shaft sleeve 10 with a certain length is designed along the axial direction to seal and isolate the circuit board 8 and the rotating shaft 4; therefore, a closed installation cavity 7 is formed in the area where the circuit board 8 is located inside the motor, the circuit board 8 is prevented from being damaged by water, the waterproof grade of the motor can reach IPX7 through the whole omnibearing static sealing structure, and the motor cannot be damaged by burning the circuit board even if the motor is immersed in water.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a motor of high waterproof performance, includes motor body and rotor, and motor body has the rotor chamber of installation rotor, and the rotor is including stretching out motor body's pivot, be equipped with first bearing between pivot and the motor body, motor body one end is equipped with outer end cover, is formed with the installation cavity that holds the circuit board between outer end cover and the motor body, its characterized in that, motor body inside be equipped with the suit at the epaxial interior end cover of pivot, interior end cover is with rotor chamber and installation cavity seal isolation, be equipped with the suit at the epaxial axle sleeve of pivot between interior end cover and the outer end cover, the one end of axle sleeve with interior end cover sealing connection, the other end of axle sleeve with outer end cover sealing connection.

2. The high water resistance motor of claim 1, wherein the outer side wall of the inner end cap is tightly fit with the inner side wall of the rotor cavity to form a seal.

3. The high waterproof performance electric machine of claim 2, wherein the outer side wall of the inner end cap is formed with an annular sealing band extending in the axial direction.

4. The high water resistance motor of claim 1, wherein an end face of the inner end cap is tightly fitted with an end face of the rotor cavity to form a seal.

5. The high waterproof performance electric machine of claim 1, wherein the shaft sleeve and the inner end cap are sealed by a first sealing ring.

6. The electric machine with high waterproof performance of claim 5, wherein the first seal ring is installed at the joint of the end face of the shaft sleeve and the inner end cap; or the first sealing ring is arranged at the joint of the outer side wall of the shaft sleeve and the inner end cover.

7. The electric machine with high waterproof performance of claim 1, characterized in that the shaft sleeve and the outer end cover are connected in a sealing manner by a second sealing ring.

8. The electric machine with high waterproof performance of claim 7, characterized in that the second sealing ring is installed at the joint of the end face of the shaft sleeve and the outer end cover; or the second sealing ring is arranged at the joint of the outer side wall of the shaft sleeve and the outer end cover.

9. A high water resistance electric machine according to any of claims 1-8, characterized in that a second bearing is provided in the inner end cap or shaft sleeve or outer end cap.

10. The motor with high waterproof performance as claimed in any one of claims 1 to 8, wherein one end of the rotating shaft extends out of the motor body or both ends of the rotating shaft extend out of the motor body; or the inner end cover is made of a metal material which is permeable to a magnetic field.