CN220043107U

CN220043107U - Waterproof motor

Info

Publication number: CN220043107U
Application number: CN202321667959.1U
Authority: CN
Inventors: 赖燕玲
Original assignee: Zhangzhou Taishi Intelligent Technology Co ltd
Current assignee: Zhangzhou Taishi Intelligent Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-11-17
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a waterproof motor, which comprises a motor shaft, a front cover, a machine shell, a driver and a rear cover, wherein a containing cavity is formed at the rear end of the machine shell, the depth of the containing cavity is larger than the thickness of the driver so as to completely contain and mount the driver, and the rear cover seals the containing cavity; the front cover forms a front bearing seat to support the front end of the motor shaft; the driver comprises an insulating shell, and a rear bearing seat is arranged on one side of the insulating shell facing the accommodating cavity so as to support the rear end of the motor shaft. The utility model forms the accommodating cavity at the rear end of the shell to accommodate and install the driver, and integrates the rear bearing seat originally arranged in the shell on the insulating shell of the driver, thereby accommodating the driver on one hand, changing the place needing sealing from two places to one place, reducing the probability of sealing failure, and on the other hand, integrating the rear bearing seat on the insulating shell, effectively reducing the axial dimension of the motor.

Description

Waterproof motor

Technical Field

The utility model relates to the technical field of motors, in particular to a waterproof motor.

Background

In the conventional motor, the stator part of the motor is separated from the driver and is connected through the driver switching wire, and thus the reliability thereof is lowered, and thus, the patent application number 202122767383.3 discloses an integrated connection structure of the motor and the driver, which is provided with the driver at the rear side of the housing of the motor, and then sequentially connects the driver and the motor into one body through the mounting bracket, which is the rear cover of the driver.

This kind of structure, despite having realized the integrated connection structure of motor and driver, it still has the drawback, and it all sets up sealedly between the casing of motor and driver and between driver and the installing support, and arbitrary one-pass seal is inefficacy, can't satisfy waterproof demand promptly, consequently, its waterproof performance decline.

Disclosure of Invention

The utility model aims to provide a waterproof motor, which improves the waterproof effect and makes the structure more compact through structure optimization.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the waterproof motor comprises a motor shaft, a front cover, a machine shell, a driver and a rear cover, wherein the rear end of the machine shell is provided with a containing cavity, the depth of the containing cavity is larger than the thickness of the driver so as to completely contain and install the driver, and the rear cover seals the containing cavity; the front cover forms a front bearing seat to support the front end of the motor shaft; the driver comprises an insulating shell, and a rear bearing seat is arranged on one side of the insulating shell facing the accommodating cavity so as to support the rear end of the motor shaft.

Further, the insulating shell is cylindrical and is used for accommodating the driving main board and accommodating the sealing and filling glue.

Further, the insulating shell is provided with a plurality of first reinforcing ribs on the inner cavity wall of the insulating shell, and a plurality of second reinforcing ribs connected with the rear bearing seat are arranged on the side where the rear bearing seat is located.

Further, the edge of the insulating shell forms a flange, a flange clamping table is formed on the cavity wall of the accommodating cavity, a pressing ring extending into the accommodating cavity is formed on the inner side of the rear cover, and when the accommodating cavity is sealed by the rear cover, the pressing ring presses the flange on the flange clamping table.

Further, a first sealing groove is formed on the peripheral surface of the pressing ring and is used for sleeving an O-shaped ring to seal the accommodating cavity.

Further, the waterproof cover comprises a waterproof cover, and a sealing shaft hole is formed in the center of the waterproof cover; the front cover extends at the front side of the front cover to form a clamping ring coaxial with the motor shaft, the waterproof cover is buckled on the clamping ring, and the sealing shaft hole seals the motor shaft.

Further, a sealing cavity is formed in the clamping ring, and a shaft end sealing ring is arranged in the sealing cavity to seal the front end of the motor shaft.

Further, the cavity bottom of the seal cavity is provided with a coaxial annular clamping groove, the shaft end sealing ring comprises a ring part, a first seal part, a second seal part and a pressing part, the ring part is installed in the annular clamping groove, a first end of the first seal part is connected with the inner side of the ring part and forms a deformation groove, a second end of the first seal part is abutted to the motor shaft, a first end of the second seal part is connected with the inner side of the ring part, a second end of the second seal part is abutted to the motor shaft, the second end of the second seal part is connected with the pressing part and forms a pressing groove, the distance between the outermost end of the pressing part and the outermost end of the first seal part is larger than the depth of the seal cavity along the axial direction of the motor shaft, and the ring part is located between the outermost end of the pressing part and the outermost end of the first seal part.

After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages:

the utility model forms the accommodating cavity at the rear end of the shell to accommodate and install the driver, and integrates the rear bearing seat originally arranged in the shell on the insulating shell of the driver, thereby accommodating the driver on one hand, changing the place needing sealing from two places to one place, reducing the probability of sealing failure, and on the other hand, integrating the rear bearing seat on the insulating shell, effectively reducing the axial dimension of the motor.

On the basis of realizing good sealing, the utility model has simple disassembly and assembly mode of the driver and the shell, the driver is tightly propped in the shell through the rear cover, and the sealing between the rear cover and the shell is realized.

According to the utility model, the waterproof cover and the shaft end sealing ring are arranged at the front cover for double sealing, so that the waterproof performance of the motor is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of another embodiment of the present utility model;

FIG. 3 is a schematic view of the housing, the drive, and the rear cover of the present utility model shown in exploded form;

FIG. 4 is a schematic view of a chassis, a driver and a rear cover according to another embodiment of the present utility model;

FIG. 5 is a front view of the present utility model;

FIG. 6 is a cross-sectional view of the present utility model taken along the line A-A in FIG. 5;

FIG. 7 is a schematic view of the seal of the motor shaft of the present utility model;

fig. 8 is a schematic view of the shaft end seal ring of the present utility model.

Reference numerals illustrate:

100. a motor shaft; 200. a front cover; 210. a front bearing seat; 220. a clasp; 230. sealing the cavity; 240. an annular clamping groove; 300. a housing; 310. a receiving chamber; 320. a flange clamping table; 400. a driver; 410. a rear bearing seat; 420. a first reinforcing rib; 430. a second reinforcing rib; 440. a flange; 500. a rear cover; 510. a compression ring; 520. a first seal groove; 600. a waterproof cover; 620. sealing the shaft hole; 700. a shaft end sealing ring; 710. a ring portion; 720. a first sealing part; 730. a second sealing part; 740. a pressing part; 750. a deformation groove; 760. pressing the groove.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to fig. 1-4 and 6, the present utility model discloses a waterproof motor, which comprises a motor shaft 100, a front cover 200, a housing 300, a driver 400 and a rear cover 500. The housing 300 has a receiving cavity 310 formed at a rear end thereof, the receiving cavity 310 having a depth greater than a thickness of the driver 400 to completely receive the driver 400, and the rear cover 500 seals the receiving cavity 310 by bolts.

In other words, in the case that the length of the motor shaft 100 in the housing 300 is fixed, the length of the housing 300 of the present utility model is longer than the length of the housing 300 of the motor integrated with the conventional drive 400, so that the drive 400 is completely accommodated in the cavity of the housing 300, thus, two waterproof seals between the housing 300 and the drive 400 and between the drive 400 and the rear cover 500 are required, and only one waterproof seal between the rear cover 500 and the housing 300 is required, thereby reducing the probability of waterproof failure.

Meanwhile, the front cover 200 forms a front bearing housing 210 to support the front end of the motor shaft 100 such that the motor shaft 100 protrudes from the front cover 200 to drive the corresponding components; the insulating case of the driver 400 is provided with a rear bearing housing 410 at a side facing the receiving chamber 310 to support the rear end of the motor shaft 100. Thus, the present utility model integrates the rear bearing housing 410 originally provided in the casing 300 on the insulating housing, simplifying the structure and reducing the overall axial length of the motor.

In this embodiment, the insulating housing is cylindrical, so as to be used for accommodating the driving motherboard and accommodating the sealing glue for sealing the driving motherboard.

In order to bear the weight of the driving main board and the sealing glue and provide necessary strength for the rear bearing seat 410, in the present utility model, please refer to fig. 3, the insulating shell is provided with a plurality of first reinforcing ribs 420 on the inner cavity wall thereof, so that the shell wall of the insulating shell has proper strength; referring to fig. 4, a plurality of second reinforcing ribs 430 connected to the rear bearing housing 410 are provided at the side of the rear bearing housing 410 to ensure the strength of the bottom of the insulating case and the rear bearing housing 410.

For installation convenience, referring to fig. 3, 4 and 6, in the present utility model, the flange 440 is formed at the edge of the insulating housing, the flange clamping seat 320 is correspondingly formed on the wall of the accommodating cavity 310, and the compression ring 510 extending into the accommodating cavity 310 is formed at the inner side of the rear cover 500, so that when the rear cover 500 is connected to the accommodating cavity 310 through bolts, the compression ring 510 compresses the flange 440 on the flange clamping seat 320, thereby completing the fixation of the insulating housing in the machine housing 300.

In this embodiment, the seal between the rear cover 500 and the casing 300 is sealed by an O-ring, specifically, the compression ring 510 forms a first seal groove 520 on its peripheral surface, and the first seal groove 520 is used for sleeving an O-ring to seal the accommodating cavity 310.

Referring to fig. 1 and 6, the present utility model further includes a waterproof cover 600 for sealing the shaft end of the motor shaft 100 extending out of the front cover 200. Specifically, the front cover 200 is extended at the front side thereof with a snap ring 220 coaxial with the motor shaft 100, the edge of the waterproof cover 600 is fastened to the snap ring 220 to complete the installation, and the center of the waterproof cover 600 is formed with a sealing shaft hole 620 to seal the motor shaft 100.

In order to realize further protection, a trace amount of water passing through the waterproof cover 600 is prevented from entering the housing 300 from the motor shaft 100 end, as shown in fig. 6, a sealing cavity 230 is formed in the snap ring 220, and a shaft end sealing ring 700 is provided in the sealing cavity 230 to seal the front end of the motor shaft 100. Thus, the possibility of water inflow from the shaft end is avoided through the secondary protection formed by the shaft end sealing ring 700.

Specifically, referring to fig. 7 and 8, the shaft end seal 700 includes a ring portion 710, a first seal portion 720, a second seal portion 730, and a pressing portion 740.

The cavity bottom of the sealing cavity 230 is provided with a coaxial annular clamping groove 240, and the annular part 710 is installed in the annular clamping groove 240 to complete the installation of the shaft end sealing ring 700.

The first end of the first sealing portion 720 is connected to the inner side of the ring portion 710 to form a deformation groove 750, and the second end of the first sealing portion 720 abuts against the motor shaft 100 to seal. The first end of the second sealing part 730 is connected to the inner side of the ring part 710, and the second end of the second sealing part 730 is abutted against the shaft of the motor shaft 100 to realize sealing again, and at the same time, the second end of the second sealing part 730 is connected to the pressing part 740 to form the pressing groove 760.

A distance D1 of the outermost end of the pressing portion 740 from the outermost end of the first sealing portion 720 is greater than a depth of the sealing cavity 230 in the axial direction of the motor shaft 100; the ring portion 710 is located between the outermost end of the pressing portion 740 and the outermost end of the first sealing portion 720, in other words, a distance D2 exists between the outermost end of the ring portion 710 and the outermost end of the first sealing portion 720.

Thus, when the waterproof cover 600 is mounted, the first sealing portion 720 and the second sealing portion 730 are firmly abutted against the motor shaft 100 under the compression of the waterproof cover 600, thereby completing the double-pass sealing of the motor shaft 100. In the utility model, the waterproof cover 600 and the shaft end sealing ring 700 are made of rubber, and the hardness of the waterproof cover 600 is higher than that of the shaft end sealing ring 700.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a waterproof motor, includes motor shaft, protecgulum, casing, driver and hou gai, its characterized in that:

the rear end of the shell forms an accommodating cavity, the depth of the accommodating cavity is larger than the thickness of the driver so as to completely accommodate and mount the driver, and the rear cover seals the accommodating cavity;

the front cover forms a front bearing seat to support the front end of the motor shaft;

the driver comprises an insulating shell, and a rear bearing seat is arranged on one side of the insulating shell facing the accommodating cavity so as to support the rear end of the motor shaft.

2. A waterproof motor as claimed in claim 1, wherein: the insulating shell is cylindrical and is used for accommodating the driving main board and accommodating the sealing and filling glue.

3. A waterproof motor as claimed in claim 2, wherein: the insulating shell is provided with a plurality of first reinforcing ribs on the inner cavity wall of the insulating shell, and a plurality of second reinforcing ribs connected with the rear bearing seat are arranged on the side where the rear bearing seat is located.

4. A waterproof motor as claimed in claim 1, wherein: the edge of the insulating shell forms a flange, a flange clamping table is formed on the cavity wall of the accommodating cavity, a pressing ring extending into the accommodating cavity is formed on the inner side of the rear cover, and when the accommodating cavity is sealed by the rear cover, the pressing ring tightly presses the flange on the flange clamping table.

5. A waterproof motor as claimed in claim 4, wherein: the periphery of the compression ring forms a first sealing groove, and the first sealing groove is used for sleeving an O-shaped ring to seal the accommodating cavity.

6. A waterproof motor as claimed in claim 1, wherein: the waterproof cover is characterized by further comprising a waterproof cover, wherein a sealing shaft hole is formed in the center of the waterproof cover; the front cover extends at the front side of the front cover to form a clamping ring coaxial with the motor shaft, the waterproof cover is buckled on the clamping ring, and the sealing shaft hole seals the motor shaft.

7. A waterproof motor as claimed in claim 6, wherein: a sealing cavity is formed in the clamping ring, and a shaft end sealing ring is arranged in the sealing cavity to seal the front end of the motor shaft.

8. A waterproof motor as claimed in claim 7, wherein: the utility model discloses a motor shaft, including sealed chamber, motor shaft, sealing washer, the chamber end of sealed chamber is equipped with coaxial annular draw-in groove, the axle head sealing washer includes ring portion, first sealing portion, second sealing portion and pressing portion, ring portion installs in the annular draw-in groove, first sealing portion's first end with the inboard of ring portion is connected and forms the deformation groove, first sealing portion's second end butt motor shaft, second sealing portion's first end with the inboard of ring portion is connected, second sealing portion's second end butt motor shaft, second sealing portion's second end with pressing portion connects and forms the pressing groove, along the axial of motor shaft, pressing portion's outermost tip distance is greater than the depth of sealing chamber, ring portion is located pressing portion's outermost tip with first sealing portion's outermost tip between.