CN216530903U

CN216530903U - Low-noise motor

Info

Publication number: CN216530903U
Application number: CN202123419254.1U
Authority: CN
Inventors: 钱善璋; 周金鑫
Original assignee: Zhejiang Qian Chuan Motor Co ltd
Current assignee: Zhejiang Qian Chuan Motor Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-13
Anticipated expiration: 2031-12-31

Abstract

The technical scheme discloses a low-noise motor which comprises a shell, a base and a sealing sleeve; the shell is hollow, a rotating shaft penetrating hole is formed in one side of the shell, an opening is formed in the other opposite side of the shell, the caliber of the opening is larger than that of the rotating shaft penetrating hole, the shell comprises an end part and a side arm, the end part and the side arm are integrally designed, the outer surfaces of the end part and the side arm are both designed to be smooth, and a first bearing installation groove is formed in one side of the rotating shaft penetrating hole; the base has a hollow inner part with an opening facing the casing and a closed opposite side, and has a second bearing installation slot in its inner position. The technical problem that this technical scheme solved is: how to reduce the wind noise of the motor and improve the moisture-proof performance of the motor.

Description

Low-noise motor

Technical Field

The utility model relates to a transmission part, in particular to a low-noise motor capable of reducing wind noise.

Background

The motor is composed of stator, rotor, end cover and casing, in which the structure of stator and rotor is mature, and the end cover and casing are designed with different structures according to different working conditions and use requirements. At present, in order to meet the heat dissipation requirement, the radiating fins of strip structures are designed on the outer side of the casing, so that if the radiating fins are installed in a place where wind is frequently blown, large wind noise is easily generated, and meanwhile, if the working condition that annual average humidity is large is met, moisture easily enters the casing to damage components in the casing, so that a motor which is suitable for low wind noise and good in sealing effect needs to be developed.

Through retrieval, chinese patent publication No. 20121226 discloses a low wind noise blower, which includes a casing, and a stator, a rotor, and a cooling fan respectively installed in the casing, wherein the width-to-diameter ratio of the cooling fan is between 0.1-0.5, the motor has low aerodynamic noise and good overall effect, and the cost is relatively high mainly by optimizing the fan, and in addition, the motor does not describe the sealing too much. Chinese patent publication No. 20140416 discloses a muffling cover for reducing ventilation noise of a motor, which is characterized in that a muffling end cover is installed behind the end cover, muffling cotton is firmly adhered to the inner wall of the muffling end cover by glue, and the muffling cotton is fixed on an end cover cylinder by a cable piece, so that the fixation is ensured to be firm, and the purpose of reducing the ventilation noise is achieved. In addition, a silencing partition plate consisting of a steel wire mesh and silencing cotton is supported in the middle of the silencing end cover, so that noise can be prevented from being directly transmitted to the motor, and a better noise reduction effect is achieved. The product has better comprehensive performance, the noise of wind is reduced mainly by arranging the silencing cover, other parts are additionally required, and the overall cost is possibly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-noise fan, which solves the technical problems that: how to reduce the wind noise of the motor and improve the moisture resistance of the motor.

The low-noise motor comprises a shell, a base and a sealing sleeve; the shell is hollow, a rotating shaft penetrating hole is formed in one side of the shell, an opening is formed in the other opposite side of the shell, the caliber of the opening is larger than that of the rotating shaft penetrating hole, the shell comprises an end part and a side arm, the end part and the side arm are integrally combined, the outer surfaces of the end part and the side arm are both smooth, and a first bearing installation groove is formed in one side of the rotating shaft penetrating hole; the whole shape of the base corresponds to the casing, the base is hollow, an opening is formed in the direction facing the casing, the opposite side is closed, a second bearing installation groove is formed in the inner position of the base, the position of the second bearing installation groove corresponds to the position of the first bearing installation groove, a notch is formed in the edge outer arm of the base, a clamping part for fixing the sealing sleeve is designed in the notch, the clamping part is designed in a U shape and hollow in the whole, and the clamping part extends outwards towards the edge outer arm of the base; the sealing sleeve comprises an inner matching end and an outer fixed end; the inner matching end is provided with a U-shaped groove matched with the clamping part, the outer fixing end is hollow and penetrates through the inner matching end, and the inner part of the outer fixing end is matched with a cable of the motor.

The inner side surface of the opening of the shell is provided with an annular first step, the base is provided with an annular second step at a corresponding position, and the first step is sleeved on the second step.

The tip of casing has annular convex extension end, should extend the end and dispose the dirt proof boot, and the inside cavity of this dirt proof boot, one end and motor shaft cooperation, the relative other pot head are served in the extension.

The combined position of the end part and the side arm is provided with an annular round angle.

The outer arm of the edge of the base has a plurality of pylons that extend outwardly.

The lifting platforms are integrally of a trapezoidal structure, and the number of the lifting platforms is three.

The platform is arranged at a position below the second step.

The card and the end face are outward relative to the notch.

The inner matching end is provided with a transverse joint part, and the whole height of the joint part is consistent with that of the second step and is jointed with the second step of the casing.

The inner mating end is integrally U-shaped, and the U-shaped groove is longitudinally and annularly arranged in the middle of the outer U-shaped outline of the inner mating end.

The utility model has the beneficial effects that: in the scheme, the end part and the side arm are integrated to form a new shell, so that compared with the traditional design that the end cover and the old shell are separated, the heat conduction is more convenient, and the design that the side arm is extended is added, so that the mode of optimizing heat conduction and expanding the heat dissipation surface is realized without adding a heat dissipation fin; the present case has designed the seal cover simultaneously between casing and base, can play the cooperation end to the cable like this through the soft structure of rubber material to realize dampproofing dirt-proof effect to cable, casing, base.

Drawings

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

FIG. 2 is an exploded schematic view of the low noise motor of FIG. 1;

FIG. 3 is a schematic view of a chassis;

FIG. 4 is a schematic view of a base;

figure 5 is a schematic view of a gland;

FIG. 6 is a schematic view of a dust boot;

in the figure, 1, a machine shell, 11, an end part, 111, a rotating shaft transmission hole, 112, a first bearing installation groove, 113, a first step, 114, an extension end, 12, a side arm, 2, a base, 21, a second bearing installation groove, 22, a notch, 23, a clamping part, 24, a second step, 25, a hanging platform, 3, a sealing sleeve, 31, an inner matching end, 311, a U-shaped groove, 312, a joint part, 32, an outer fixing end and 4, a dustproof sleeve are arranged.

Detailed Description

Referring to fig. 1 to 6, the design core of the present application is to design a unique motor casing 1 structure to replace the original heat sink structure on the casing 1, so as to reduce the wind noise of the casing 1; simultaneously, the present case has designed unique seal cover 3 structure between casing 1 and base 2, realizes good dampproofing dustproof effect. The low-noise motor in the figure is provided with a shell 1, a base 2 and a sealing sleeve 3. The casing 1 is used for accommodating internal components such as a rotor and the like, and is also conveniently matched with the base 2 and the sealing sleeve 3. The base 2 serves to provide a fixed space for the sealing sleeve 3. The sealing sleeve 3 is used for sealing the cable, thereby achieving the dustproof and moistureproof effects. In practical application, the three components can be further optimized or other components can be additionally added, so that the use effect of the whole motor is improved.

The casing 1 is designed to have a hollow structure inside, a rotating shaft transmission hole 111 at the top for inserting the rotating shaft of the motor, and an opening structure at the bottom for assembling with the base 2, wherein the diameter of the opening is obviously larger than the inner diameter of the rotating shaft extending hole, and the opening is close to the diameter of the outer arm of the casing 1. The machine shell 1 is provided with an end part 11 and a side arm 12, the end part 11 is equivalent to an end cover of an original motor, the side arm 12 is equivalent to an outer arm of the original motor, the end part 11 and the side arm 12 adopt annular round corner transition, the end part 11 and the side arm 12 are designed into an integral structure, so that an integral piece is formed, meanwhile, the whole outer surfaces of the end part 11 and the side arm 12 are designed into smooth non-radiating structures, and therefore wind noise of the outer surface of the machine shell 1 can be reduced. In order to fix and limit the rotating shaft, a first bearing installation groove 112 can be designed beside the penetrating hole of the rotating shaft, so that a bearing is arranged in the first bearing installation groove 112. Besides the above design, the inner side surface of the opening of the casing 1 is further designed with an annular first step 113, so that the casing 1 can be fixedly sleeved on the base 2 by matching with the second step 24 of the base 2 at the corresponding position. Meanwhile, the end portion 11 of the casing 1 is further designed with an extending end 114 which is annular and protrudes outwards, the extending end 114 is sleeved with a dustproof sleeve 4, the dustproof sleeve 4 is hollow inside, so that one end of the dustproof sleeve is matched with the rotating shaft of the motor, and the other end of the dustproof sleeve is sleeved on the extending end 114. In practical applications, the local details of the end portion 11 and the side arm 12 can be further optimized.

The base 2 of the scheme is integrally designed by adopting a structure similar to a tray, and the shape of the base 2 can correspond to the shape of the bottom opening of the machine shell 1. The base 2 is hollow in the whole, an opening is designed towards the direction of the casing 1, and the opposite side is sealed in the whole to form a solid structure. This base 2 has a second bearing mounting groove 21 in the bottom design of hollow inside, and this second bearing mounting groove 21 keeps corresponding on longitudinal position with the position of first bearing mounting groove 112 simultaneously, thereby can put into a bearing and fix the rear end of countershaft like this. The edge outer arm of the base 2 is designed with a gap 22, and the position of the gap 22 is provided with a clamping part 23 which can fix the sealing sleeve 3. This block portion 23 wholly adopts the inside hollow design of U-shaped simultaneously wholly can extend outwards towards the outer arm direction in edge of base 2, just so can be fine fix seal cover 3. In order to facilitate hoisting the whole motor or carrying, a plurality of three lifting platforms 25 as shown in the figure can be designed at the position of the outer arm at the edge of the base 2 and below the second step 24, and the lifting platforms 25 are designed to extend outwards and have a trapezoidal structure as a whole to ensure strength. In practical applications, the local structure of the base 2 can be re-optimized or the number of the hanging platforms 25 can be adjusted.

The sealing sleeve 3 mainly has two structures which are integrally combined into a whole and made of elastic materials, and the two structures are an inner matching end 31 and an outer fixing end 32 in sequence. The inner mating end 31 is also U-shaped in its entirety, and a U-shaped groove 311 is formed in the middle of the outer U-shaped profile in a longitudinal direction, so that the inner mating end can be elastically fitted to the engaging portion 23. The above is the matching of the inner mating end 31 and the base 2, and the top of the inner mating end 31 is designed with a transverse attaching portion 312 having a strip structure, and the overall height of the attaching portion is kept consistent with the height of the second step 24 and is kept integrally attached to the second step 24 of the casing 1. The outer fixing end 32 is integrally formed as a cylindrical structure, so as to wrap the cable. The sealing boot 3 of the present embodiment is hollow inside so as to integrally penetrate the inner mating end 31 and the outer fixing end 32. In practical application, the inner mating end 31 and the outer fixing end 32 can be re-optimally configured, and other components can be added, so that the degree of matching and sealing between the sealing sleeve 3 and the casing 1 and the base 2 is obviously improved.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In the description of the present technical solution, it should be noted that the terms such as "upper", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the technical solution and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the technical solution.

Meanwhile, in the description of the present technical solution, it should be noted that, unless explicitly stated or limited otherwise, the terms "fixed" and "coupled" should be interpreted broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.

Although embodiments of the present technical solution have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the technical solution, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Low noise motor, including casing (1), base (2), its characterized in that: also comprises a sealing sleeve (3); the inner part of the machine shell (1) is hollow, a rotating shaft penetrating hole is formed in one side of the machine shell, an opening is formed in the opposite side of the machine shell, the caliber of the opening is larger than that of the rotating shaft penetrating hole, the machine shell (1) comprises an end part (11) and a side arm (12), the end part (11) and the side arm (12) adopt an integral integrated design, the outer surfaces of the end part (11) and the side arm (12) are both in a smooth design, and a first bearing installation groove (112) is formed in one side of the rotating shaft penetrating hole; the whole shape of the base (2) corresponds to the casing (1), the base (2) is hollow, an opening is formed in the direction towards the casing (1), the opposite side is closed, the base (2) is provided with a second bearing installation groove (21) in the inner position, the position of the second bearing installation groove (21) corresponds to the position of the first bearing installation groove (112), the edge outer arm of the base (2) is provided with a notch (22), a clamping part (23) for fixing the sealing sleeve (3) is designed in the notch (22), the clamping part (23) is designed into a U shape and is hollow in the whole, and the clamping part (23) extends outwards towards the edge outer arm of the base (2) in the whole; the sealing sleeve (3) comprises an inner matching end (31) and an outer fixing end (32); the inner matching end (31) is provided with a U-shaped groove (311) which is matched with the clamping part (23), the outer fixing end (32) is hollow and penetrates through the inner matching end (31), and the inner fixing end (32) is matched with a cable of the motor.

2. The low noise motor according to claim 1, wherein: the inner side surface of the opening of the shell (1) is provided with an annular first step (113), the base (2) is provided with an annular second step (24) at a corresponding position, and the first step (113) is sleeved on the second step (24).

3. The low noise motor according to claim 2, wherein: the end part (11) of the machine shell (1) is provided with an annular protruding extending end (114), the extending end (114) is provided with a dustproof sleeve (4), the dustproof sleeve (4) is hollow, one end of the dustproof sleeve is matched with a motor rotating shaft, and the other opposite end of the dustproof sleeve is sleeved on the extending end (114).

4. The low noise motor according to claim 3, wherein: the joint position of the end part (11) and the side arm (12) is provided with an annular round angle.

5. The low noise motor according to claim 4, wherein: the outer edge arm of the base (2) is provided with a plurality of hanging platforms (25), and the hanging platforms (25) extend outwards.

6. The low noise motor according to claim 5, wherein: the lifting platforms (25) are of a trapezoidal structure as a whole and are three in number.

7. The low noise motor according to claim 6, wherein: the platform (25) is arranged at a position below the second step (24).

8. The low noise motor according to claim 7, wherein: the card and the end face are directed outwards with respect to the gap (22).

9. The low noise motor according to claim 8, wherein: the inner mating end (31) is provided with a transverse joint part (312), and the overall height of the joint part (312) is consistent with that of the second step (24) and is jointed with the second step (24) of the machine shell (1).

10. The low noise motor according to claim 9, wherein: the inner mating end (31) is generally U-shaped, and the U-shaped groove (311) is configured in the middle of the outer U-shaped profile of the inner mating end (31) and is longitudinally and annularly arranged.