CN213341843U

CN213341843U - End cover plastic-coated sealing motor

Info

Publication number: CN213341843U
Application number: CN202022398607.3U
Authority: CN
Inventors: 熊红安; 陈智伟; 冯金海; 亚历山大
Original assignee: Suzhou Bolege Motor Technology Co ltd
Current assignee: Suzhou Bolege Motor Technology Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-01
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a sealed motor is moulded to end cover package, including stator module and end cover, the end cover fastening is on stator module, injection moulding has the injection molding on the end cover, be provided with on the injection molding and enclose the bulge of closing at end cover and stator module contact department, set up on the stator module and enclose the seal groove of closing at end cover and stator module contact department, the bulge is extruded in the seal groove. The waterproof dustproof flame-retardant cable can greatly improve the dustproof, waterproof and flame-retardant grades, and has few parts and strong reliability.

Description

End cover plastic-coated sealing motor

Technical Field

The utility model relates to a motor, concretely relates to end cover plastic-coated sealing motor.

Background

The motor is the most common power source in production and life. In some harsh environments, the motor is required to have extremely high sealing performance. Otherwise, if dust, water vapor, etc. enter the inside of the motor, the motor may be damaged. Motor products in the market are mostly sealed by adopting a rubber sealing ring structure. But the size precision of the rubber sealing ring is poor, when the rubber sealing ring is matched with a motor, a gap is easy to generate, and the protection grade is not high. And the material cost and the assembly cost of the rubber sealing ring are higher, the number of parts of the motor is increased, and the reliability of the motor is reduced. In addition, the rubber sealing ring has poor reliability at high temperature and low fire-proof grade.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a sealed motor is moulded to end cover package, its improvement that can be great is dustproof, waterproof, fire-retardant grade, and spare part is few, the good reliability.

In order to solve the technical problem, the utility model provides a sealed motor is moulded to end cover package, including stator module and end cover, the end cover fastening is on stator module, injection moulding has the injection molding on the end cover, be provided with on the injection molding and enclose the bulge of closing at end cover and stator module contact department, stator module is last to be seted up to enclose the seal groove of closing at end cover and stator module contact department, the bulge is extruded in the seal groove.

Preferably, the end cover is provided with a fastening hole, a fastening piece is arranged in the fastening hole in an interference mode, and one end of the fastening piece is arranged in the stator assembly in an interference mode.

Preferably, the fastener is a self-tapping screw.

Preferably, the protrusion and the sealing groove enclose the circumference of the fastener.

Preferably, the outer contours of the cross sections of the protrusion and the sealing groove are arc-shaped, the radius of the protrusion is smaller than that of the sealing groove, and the depth of the sealing groove is smaller than the height of the protrusion.

Preferably, the end cover is provided with an attachment groove, the injection molding piece is filled in the attachment groove to form an attachment part, and the protrusion part protrudes out of the attachment groove.

Preferably, a deepening groove is formed in the attachment groove, and the injection molding piece is filled in the deepening groove to form a deepening part.

Preferably, the sealing groove includes a first sealing groove and a second sealing groove, the attachment groove includes a first attachment groove and a second attachment groove, the injection molding piece comprises a first injection molding piece and a second injection molding piece, the protruding part comprises a first protruding part and a second protruding part, the attachment part comprises a first attachment part and a second attachment part, the first sealing groove and the first attachment groove enclose the periphery of the fastening position, the first attaching portion is filled in the first attaching groove, the first protrusion is disposed on the first attaching portion, and the first bulge is extruded in the first sealing groove, the second sealing groove and the second attachment groove are respectively arranged on the stator assembly and the side wall of the outermost periphery of the end cover, the second adhesion part is filled in the second adhesion groove, the second protruding part is arranged on the second adhesion part, and the second protruding part is extruded in the second sealing groove.

Preferably, the radius of the first sealing groove is R2, the depth is h2, the radius of the first protrusion is R1, the protrusion height is h1, and R1< R2, h1> h 2.

Preferably, the radius of the second seal groove is R4, the depth is h4, the radius of the second protrusion is R3, the protrusion height is h3, and R3< R4, h3> h 4.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the design of optimization, end cover fastening back on stator module, the bulge can be extruded in the seal groove, and the bulge warp the back, can make seamless connection between stator module and the end cover, forms sealedly. The injection molding bulge has extremely high dimensional accuracy and excellent sealing effect, and can reach the protection grade of IP 55. After injection molding, the injection molding part and the end cover form a complete whole, the number of parts of the motor is reduced, the flame retardant grade can reach UL94-V0, and the reliability of the motor is greatly improved.

Drawings

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

FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention;

fig. 2 is a schematic top view of a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of part A;

FIG. 4 is an exploded view of part A;

FIG. 5 is a schematic cross-sectional view of a first injection molded part;

FIG. 6 is a schematic cross-sectional view of a second injection molded part;

fig. 7 is a schematic cross-sectional view of an end cap.

The stator assembly comprises a stator assembly 1, a first sealing groove 10, a second sealing groove 11, an end cover 2, a fastening hole 20, a first attachment groove 21, a second attachment groove 22, a deepening groove 23, a fastening piece 3, a first injection molding piece 4, a first bulge 40, a first attachment portion 41, a second injection molding piece 5, a second bulge 50, a second attachment portion 51 and a deepening portion 52.

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. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Examples

Referring to fig. 1 to 5, the utility model discloses an end cover plastic-coated sealing motor, which comprises a stator module 1 and an end cover 2. The end cap 2 is fastened to the stator assembly 1. An injection molding piece is injection molded on the end cover 2. The injection molding piece is provided with a protruding part which is enclosed at the contact part of the end cover 2 and the stator assembly 1. The stator assembly 1 is provided with a sealing groove which is enclosed at the contact position of the end cover 2 and the stator assembly 1. The projection is squeezed within the seal groove. Above optimized design, back on stator module 1 is fastened to end cover 2, and the bulge can extrude in the seal groove, and after the bulge warp, can make seamless connection between stator module 1 and the end cover 2, form sealedly. The injection molding bulge has extremely high dimensional accuracy and excellent sealing effect, and can reach the protection grade of IP 55. After injection molding, the injection molding part and the end cover 2 form a complete whole, the number of parts of the motor is reduced, the flame retardant grade can reach UL94-V0, and the reliability of the motor is greatly improved.

The contact position of the end cover 2 and the stator assembly 1 comprises a side wall contact position where the end cover 2 covers the outermost side of the stator assembly 1 and a contact position where the end cover 2 and the stator assembly 1 are fastened.

Specifically, the end cap 2 has a fastening hole 20. The fastening hole 20 is internally provided with a fastening member 3 in an interference manner. One end of the fastener 3 is arranged in the stator assembly 1 in an interference mode. The fastener 3 can be firmly fixed together end cover 2 and stator module 1, and the setting mode of fastener 3 interference can form first sealed, effectively prevents that dust and steam from getting into the motor by fastener 3 department. The fasteners 3 may be self-tapping screws that ensure the tightness of the end cap 2 and the stator assembly 1, as well as the tightness of the self-tapping screws with the end cap 2 and the stator assembly 1. The end cap 2 may be an aluminium cast end cap.

In order to improve the uniformity of the sealing, the fasteners 3 are four and are uniformly distributed on the end cap 2, as shown in fig. 2.

When fastening is performed using the fastening member 3, the protrusion and the sealing groove surround the periphery of the fastening member 3. To seal the motor interior with the fasteners 3.

In order to increase the connection strength between the injection-molded part and the end cap 2, an attachment groove may be provided in the end cap 2. The injection molding part is filled in the attachment groove to form an attachment part. The protrusion protrudes out of the attachment groove. The attachment groove can perfectly match the injection molding part, the injection molding part is prevented from excessively shifting, and the sealing stability is ensured. The attachment groove may be rectangular in cross-section.

In order to further strengthen the adhesion strength of the injection molding part, a deepening groove 23 is formed in the adhesion groove. The injection-molded part fills the deepened portion 52 in the deepened groove 23. The deepening groove 23 and the attaching groove form a step-shaped transition, and the attaching strength can be improved.

In order to improve the sealing performance, the outer contours of the cross sections of the convex part and the sealing groove are both arc-shaped. The radius of the bulge is smaller than that of the sealing groove, and the depth of the sealing groove is smaller than the height of the bulge. This kind of size cooperation, the bulge can receive great degree's extrusion, and it is after by extrusion deformation, can be even fill in the seal groove, the effectual sealed effect that has improved.

Specifically, as shown in fig. 3 to 6, the seal groove includes a first seal groove 10 and a second seal groove 11. The attachment grooves include a first attachment groove 21 and a second attachment groove 22. The injection-molded parts comprise a first injection-molded part 4 and a second injection-molded part 5. The projection includes a first projection 40 and a second projection 50. The attachment portion includes a first attachment portion 41 and a second attachment portion 51.

The first seal groove 10 and the first attachment groove 21 surround the periphery of the fastener 3. The first attaching portion 41 is filled in the first attaching groove 21. The first protrusion 40 is disposed on the first attachment portion 41, and the first protrusion 40 is pressed inside the first seal groove 10.

The first seal groove 10 has a radius R2 and a depth h 2. First projection 40 has a radius R1 and a projection height h 1. And R1< R2, h1> h 2. After the assembly is completed, the first protruding portion 40 on the end cover 2 is uniformly distributed in the first sealing groove 10 due to extrusion deformation, so that the end cover 2 and the stator assembly 1 are connected at a fastening position in a seamless manner to form a second sealing. Therefore, dust or water vapor needs to pass through two seals if entering the motor from the gap at the fastening position, and the sealing effect is excellent.

The second seal groove 11 and the second adhesion groove 22 are respectively disposed on the outermost sidewalls of the stator assembly 1 and the end cap 2. The second attaching portion 51 is filled in the second attaching groove 22. The second protrusion 50 is disposed on the second attachment portion 51, and the second protrusion 50 is pressed into the second seal groove 11.

The radius of the second seal groove 11 is R4 and the depth is h 4. Second projection 50 has a radius R3 and a projection height h 3. And R3< R4, h3> h 4. After the assembly is completed, the second protrusion 50 on the end cover 2 is uniformly distributed in the second sealing groove 11 due to extrusion deformation, so that the end cover 2 and the stator assembly 1 are seamlessly connected at the splicing position to form a seal.

The second seal groove 11 is formed in the inner side of the sidewall of the end cap 2, and the inner side of the second seal groove is communicated with the inside of the end cap 2. In this way, the side walls of the end cap 2 can block the injection-molded part and prevent it from escaping the end cap 2 during the extrusion deformation.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a sealed motor is moulded to end cover package, its characterized in that, includes stator module and end cover, the end cover fastening is on stator module, injection moulding has the injection molding on the end cover, be provided with on the injection molding and enclose the bulge of closing in end cover and stator module contact department, stator module is last to be seted up and to be enclosed the seal groove of closing in end cover and stator module contact department, the bulge extrusion is in the seal groove.

2. The end cover plastic-coated sealing motor as claimed in claim 1, wherein the end cover is provided with a fastening hole, a fastening member is arranged in the fastening hole in an interference manner, and one end of the fastening member is arranged in the stator assembly in an interference manner.

3. The end cap plastic-covered sealed motor according to claim 2, wherein the fastener is a self-tapping screw.

4. The end cap plastic-covered sealed motor of claim 2, wherein the protrusion and the seal groove surround a periphery of the fastener.

5. The end cap plastic-coated sealing motor as claimed in claim 1, wherein the outer profiles of the cross sections of the protrusion and the sealing groove are arc-shaped, the radius of the protrusion is smaller than that of the sealing groove, and the depth of the sealing groove is smaller than the height of the protrusion.

6. The end cap plastic-coated sealed motor according to claim 5, wherein the end cap is provided with an attachment groove, the injection-molded part is filled in the attachment groove to form an attachment portion, and the protrusion protrudes out of the attachment groove.

7. The end cap plastic-coated sealed motor according to claim 6, wherein a deepened groove is formed in the attachment groove, and the injection molding member is filled in the deepened groove to form a deepened portion.

8. The end cap plastic-coated canned motor of claim 6, wherein the sealing groove comprises a first sealing groove and a second sealing groove, the attachment groove comprises a first attachment groove and a second attachment groove, the injection-molded part comprises a first injection-molded part and a second injection-molded part, the protrusion comprises a first protrusion and a second protrusion, the attachment comprises a first attachment portion and a second attachment portion, the first sealing groove and the first attachment groove enclose a periphery of the fastening place, the first attachment portion is filled in the first attachment groove, the first protrusion is disposed on the first attachment portion, and the first protrusion is extruded in the first sealing groove, the second sealing groove and the second attachment groove are respectively disposed on sidewalls of the stator assembly and the outermost periphery of the end cap, the second attachment portion is filled in the second attachment groove, and the second protrusion is disposed on the second attachment portion, and the second projection is compressed within the second seal groove.

9. The end cap plastic-covered sealed motor of claim 8, wherein the radius of the first sealing groove is R2, the depth is h2, the radius of the first protrusion is R1, the protrusion height is h1, and R1< R2, h1> h 2.

10. The end cap plastic-covered sealed motor of claim 8, wherein the radius of the second sealing groove is R4, the depth is h4, the radius of the second protrusion is R3, the protrusion height is h3, and R3< R4, h3> h 4.