CN113489209A

CN113489209A - Motor seal assembly and motor

Info

Publication number: CN113489209A
Application number: CN202110805396.7A
Authority: CN
Inventors: 吴国锋; 司扣华; 李庆; 徐鹏; 陈彬
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Kaibang Motor Manufacture Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Kaibang Motor Manufacture Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-10-08

Abstract

The application provides a motor seal assembly and a motor. This motor seal assembly is used for sealing wire to wear to locate the line hole of crossing between stator and the end cover, includes: the sealing element comprises a connecting bridge, and the connecting bridge spans the lead in a bridge manner; the connecting bridge includes a first side in sealing contact with the wire and a second side in sealing contact with the end cap. Through setting up the sealing member at this gap, improve the leakproofness of PG motor, the reinforcing motor protection effectively prevents inside tiny biology, the entering PG motor of granule, reduces the potential safety hazard of PG motor in the use of tropical region. The structure has simple installation, difficult loosening, good producibility and reliability and easy popularization and use.

Description

Motor seal assembly and motor

Technical Field

The application belongs to the technical field of motors, and particularly relates to a motor sealing assembly and a motor.

Background

With the expansion of the domestic air-conditioning market to overseas, there are a number of air-conditioners exported to tropical countries or regions such as thailand and india. The PG motor is a domestic air-conditioning AC plastic package motor using silicon controlled rectifier to regulate speed, and is mainly composed of plastic package stator, Hall assembly wire, rotor and end cover. Under the normal condition, a wire groove is formed in the plastic package stator to lead out a power line of the Hall assembly, a gap which cannot be sealed is formed among the end cover, the plastic package stator and the Hall assembly lead, the gap usually appears between the Hall assembly lead and the end cover, and as shown in fig. 8, the sealing performance of the PG motor is poor. In part of tropical areas, some tiny insects and ants and particles easily enter the motor from gaps among the plastic package stator, the end cover and the Hall assembly lead, so that the PG motor is unsmooth in operation and abnormal in noise, and the motor is blocked seriously to cause the problem of machine burning and the like after sale.

In order to solve the problem of the sealing performance of the PG motor, a method which is more commonly used in the industry is to sleeve a soft rubber ring on a power line of a Hall assembly, and the soft rubber ring is deformed after being extruded by an end cover so as to fill a gap of the PG motor. With the lapse of time, the flexible glue circle is heated for a long time and can be ageing, receives the easy fracture that takes place of extruded flexible glue circle for sealed inefficacy.

Disclosure of Invention

Therefore, the application provides a motor seal assembly and motor, can solve among the prior art soft rubber ring of cover on hall assembly's the power cord, long-term use can make the problem of sealed inefficacy.

In order to solve the above problem, the present application provides a motor seal assembly for seal wire wears to locate the line hole between stator and the end cover, includes:

the sealing element comprises a connecting bridge, and the connecting bridge spans the lead in a bridge manner;

the connecting bridge includes a first side in sealing contact with the wire and a second side in sealing contact with the end cap.

Optionally, the first side face is provided as a first arc face matched with the outer peripheral wall of the wire.

Optionally, the connecting bridge is disposed on an outer peripheral side of the end cap, and the second side surface is a second arc surface matched with an outer peripheral edge of the end cap.

Optionally, the sealing element further includes a pin, one end of the pin is disposed on the connecting bridge, and the other end of the pin is clamped with the stator.

Optionally, two pins are arranged and arranged on two ends of the connecting bridge in parallel; the distance between the two pins is the same as the width of the conducting wire.

Optionally, the stator is provided with an outlet slot for leading out the conducting wire, and the conducting wire is arranged in the outlet slot; the pin is sealed in a gap between the lead and the side wall of the wire outlet groove.

Optionally, a mounting hole is formed in the stator, an opening end of the mounting hole is formed in the side wall of the outlet groove, and a preset angle is formed between the extending direction of the mounting hole and the extending direction of the outlet groove; the pins are inserted into the mounting holes.

Optionally, the mounting hole and the pin are provided with a clamping assembly, and the pin is clamped with the stator through the clamping assembly.

Optionally, the pins are provided with spring pieces, and the spring pieces are provided with protrusions protruding out of the pins; the side wall of the mounting hole is provided with a abdicating groove and a recess; the process that the plug pins are inserted into the mounting holes is that the elastic sheets slide along the abdicating grooves until the bulges are correspondingly clamped with the depressions.

Optionally, a side of the mounting hole is located on a side of the outer periphery of the end cap.

Optionally, the seal is die cast.

According to another aspect of the present application, there is provided an electric machine comprising a motor seal assembly as described above.

The application provides a motor seal assembly for sealed wire wears to locate the line hole between stator and the end cover, include: the sealing element comprises a connecting bridge, and the connecting bridge spans the lead in a bridge manner; the connecting bridge includes a first side in sealing contact with the wire and a second side in sealing contact with the end cap.

When wearing to locate the wire passing hole between stator and the end cover based on the wire, can appear great gap between wire and end cover, this application sets up the sealing member that a bridge type stridees across the wire in this gap department, utilize the connection bridge that this sealing member contains to set up two sides, carry out sealing contact with wire and end cover respectively, thereby realize sealing effectively this gap, and can not appear covering a soft rubber ring on hall assembly's the power cord among the prior art, long-term the use can make the problem of sealed inefficacy.

Through setting up the sealing member at this gap, improve the leakproofness of PG motor, the reinforcing motor protection effectively prevents inside tiny biology, the entering PG motor of granule, reduces the potential safety hazard of PG motor in the use of tropical region. The structure has simple installation, difficult loosening, good producibility and reliability and easy popularization and use.

Drawings

FIG. 1 is a schematic cross-sectional view of an assembled electric machine according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of the embodiment of the present application shown in FIG. 1;

FIG. 3 is a schematic structural view of a seal according to an embodiment of the present application;

FIG. 4 is a schematic structural view of another perspective of a seal according to an embodiment of the present application;

FIG. 5 is a top plan view and partially enlarged view of a stator according to an embodiment of the present application;

FIG. 6 is an elevational and partially enlarged view of a stator according to an embodiment of the present application;

FIG. 7 is an elevation view and a partial enlarged view of a motor assembly according to an embodiment of the present application;

fig. 8 is an assembled and partially enlarged view of a conventional motor.

The reference numerals are represented as:

1. a stator; 11. an outlet groove; 12. mounting holes; 121. a C side surface; 122. a yielding groove; 123. recessing; 2. an end cap; 3. a wire; 4. a seal member; 41. a connecting bridge; 411. a second side surface; 412. a first side surface; 42. a pin; 43. a spring plate; 44. and (4) protruding.

Detailed Description

Referring to fig. 1 to 7 in combination, according to an embodiment of the present application, a motor sealing assembly for sealing a wire passing hole through which a wire 3 passes between a stator 1 and an end cover 2 includes:

a sealing member 4 including a connecting bridge 41, wherein the connecting bridge 41 bridges over the conductive wire 3;

the connecting bridge 41 comprises a first side 412 and a second side 411, the first side 412 being in sealing contact with the conductor 3 and the second side 411 being in sealing contact with the end cap 2.

When wearing to locate the line hole of crossing between stator 1 and the end cover 2 based on wire 3, can appear great gap between wire 3 and end cover 2, this application sets up a bridge type in this gap department and stridees across sealing member 4 of wire 3, set up two sides on the connecting bridge 41 that utilizes this sealing member 4 to contain, carry out sealing contact with wire 3 and end cover 2 respectively, thereby realize sealing effectively this gap, even adopt plastic materials, the cracked phenomenon of ageing can not appear yet, this sealing member 4 still can adopt the direct die-casting shaping of die casting die, consequently, cover a soft rubber ring on hall assembly's the power cord among the prior art can not appear, long-term use can make the problem of sealed inefficacy.

Specifically, the connecting bridge 41 has a bridge structure, the first side surface 412 is a bottom surface of the connecting bridge 41 and is abutted only to the conductive wire 3, and the second side surface 411 is an end side of the connecting bridge 41, as shown in fig. 3 and 4.

Through setting up sealing member 4 at this gap, improve the leakproofness of PG motor, strengthen the motor protection, effectively prevent inside tiny biology, the entering PG motor of granule, reduce the potential safety hazard of PG motor in the use of tropical region. The structure has simple installation, difficult loosening, good producibility and reliability and easy popularization and use.

In some embodiments, the first side surface 412 is provided as a first arc surface matching with the outer peripheral wall of the wire 3.

As shown in fig. 2 and 4, the first side surface 412 of the bottom surface of the connecting bridge 41, which contacts with the conducting wire 3 such as the hall element power line, is set to be an arc surface, and the radian of the arc surface is matched with the shape of the hall element power line, so that the bottom of the connecting bridge 41 can be tightly jointed with the hall element power line, and the sealing performance is improved.

In some embodiments, the connecting bridge 41 is disposed on the outer periphery of the end cap 2, and the second side surface 411 is provided with a second cambered surface matched with the outer periphery of the end cap 2.

As shown in fig. 2 and 3, the side surface of the connecting bridge 41 is in contact with the end cap 2, and the contact surface is a cambered surface, and the radian of the cambered surface is matched with the outer diameter of the end cap 2 of the PG motor, so that the connecting bridge 41 of the sealing element 4 can be tightly jointed with the end cap 2; in the scheme, the sealing element 4 is plugged from the outer side of the wire passing hole, so that the purpose of sealing a gap between the lead 3 and the end cover 2 is achieved.

In some embodiments, the sealing element 4 further comprises a pin 42, one end of the pin 42 is arranged on the connecting bridge 41, and the other end is clamped with the stator 1.

In order to improve the stability of the sealing element 4 when the wire passing hole is sealed, the sealing element 4 is provided with a plug pin 42 connected with the connecting bridge 41, and the plug pin 42 is clamped with the stator 1, so that the assembly is convenient; meanwhile, the pins 42 can enable the wires 3 to be in close contact with the stator 1, and the sealing performance between the wires 3 and the stator 1 is enhanced.

In some embodiments, two pins 42 are provided, and are provided in parallel on both ends of the connecting bridge 41; the pitch of the two pins 42 is the same as the width of the conductor 3.

The two pins 42 are respectively arranged at two ends of the connecting bridge 41, so that the whole sealing element 4 is in a door frame type structure; the distance between the outer surfaces of the two pins 42 is equal to the width of the hall assembly wire outlet slot 11, the distance between the inner surfaces thereof is equal to the width of the hall assembly power line, and the hall assembly power line can pass through the two pins 42.

In some embodiments, the stator 1 is provided with an outlet slot 11 for leading out the conducting wire 3, and the conducting wire 3 is arranged in the outlet slot 11; the pin 42 is sealed in a gap between the lead wire 3 and the side wall of the outlet groove 11.

The pin 42 is arranged in a gap between the lead 3 and the side wall of the outlet groove 11, so that the gap between the left part and the right part of the outlet groove 11 is filled, and the whole sealing performance is improved.

In some embodiments, the stator 1 is provided with a mounting hole 12, an open end of the mounting hole 12 is disposed on a sidewall of the outlet slot 11, and an extending direction of the mounting hole 12 and an extending direction of the outlet slot 11 form a preset angle; the pins 42 are inserted into the mounting holes 12.

The pins 42 and the mounting holes 12 are inserted in a crossed manner, so that the connecting bridge 41 can effectively make sealing contact with the lead 3; meanwhile, the length and width of the mounting hole 12 are equivalent to those of the pin 42, and the optimum depth of the mounting hole 12 is slightly deeper than that of the pin 42 when the pin 42 is mounted in place.

In some embodiments, the mounting hole 12 and the pin 42 are provided with a clamping assembly, and the pin 42 is clamped with the stator 1 through the clamping assembly. The pin 42 is provided with a spring plate 43, and the spring plate 43 is provided with a bulge 44 protruding out of the pin 42; the side wall of the mounting hole 12 is provided with a abdicating groove 122 and a recess 123; the process of inserting the pin 42 into the mounting hole 12 is that the elastic sheet 43 slides along the receding groove 122 until the protrusion 44 is correspondingly clamped with the recess 123.

The two pins 42 are respectively provided with a spring plate 43, the spring plate 43 is formed by a groove penetrating through the pins 42 at the periphery, and the groove is in a U shape or an N shape, so that the spring plate 43 can swing to a certain degree. The elastic piece 43 is provided with a protrusion 44, the protrusion 44 protrudes towards the outer surface of the pin 42, and the protrusion 44 is preferably shaped as a semicircle or an arc.

The mounting hole 12 is provided with a recess 123 and a spring 43 relief groove 122. The recess 123 is located on one side of the mounting hole 12 and engages the projection 44 on the pin 42 for the purpose of securing the seal 4. The relief groove 122 is located opposite the recess 123 and has a width corresponding to the width of the resilient tab 43 on the pin 42 so that the sealing member 4 can be properly seated.

The clamping connection of the pin 42 and the stator 1 can also be set such that the stator 1 is not provided with the mounting hole 12, but a concave point is arranged on the inner wall of the hall assembly outlet slot 11, correspondingly, the elastic sheet 43 and the protrusion 44 on the sealing element 4 are moved to the position corresponding to the concave 123, and the pin 42 is shortened and directly contacts with the bottom of the hall assembly outlet slot 11. The structure can also achieve the corresponding sealing effect, but the tightness is slightly poor.

In some embodiments, one side of the mounting hole 12 is located on the side of the outer periphery of the end cap 2.

As shown in fig. 5, when the stator 1 is viewed from above in the axial direction of the end cap 2, the C-plane of the mounting hole 12 is flush with the outer circumference of the end cap 2, so that the second side 411 of the connecting bridge 41 can be tightly engaged with the outer circumference of the end cap 2 when the sealing member 4 is mounted.

The above-mentioned sunken 123 cooperates the structure with the joint of the projection 44, the sunken 123 is slightly bigger than the projection 44, the shape can be polygonal, semicircular, etc.. The recess 123 serves as a yielding point of the protrusion 44, so that the elastic sheet 43 can be restored to the original position, and the protrusion 44 and the recess 123 are locked, so that the sealing element 4 is not easy to fall off, and the installation is firm and reliable.

The length of the relief groove 122 is equal to the length of the spring 43, and the width is equal to the size of the protrusion 44. When the sealing element 4 is installed, the protrusion 44 is pressed by the inner wall of the hall assembly wire outlet groove 11, the elastic sheet 43 is forced to swing inwards to deform, and the abdicating groove 122 enables the sealing element 4 to be installed in place more easily.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. The utility model provides a motor seal assembly for seal wire (3) wear to locate the line hole of crossing between stator (1) and end cover (2), its characterized in that includes:

a sealing member (4) including a connecting bridge (41), wherein the connecting bridge (41) spans the lead (3) in a bridge manner;

the connecting bridge (41) comprises a first side (412) and a second side (411), the first side (412) being in sealing contact with the conductor (3) and the second side (411) being in sealing contact with the end cap (2).

2. The motor seal assembly according to claim 1, characterized in that the first side face (412) is provided as a first arc face matching the peripheral wall of the conductor wire (3).

3. A motor seal assembly according to claim 1 or 2, characterised in that the bridge (41) is arranged on the outer circumference of the end cover (2), and the second flank (411) is provided as a second arc surface matching the outer circumference of the end cover (2).

4. The motor seal assembly according to claim 1, wherein the sealing element (4) further comprises a pin (42), one end of the pin (42) is arranged on the connecting bridge (41), and the other end of the pin is clamped with the stator (1).

5. The motor-sealing assembly according to claim 4, characterized in that said pins (42) are provided in two and in parallel on both ends of said connecting bridge (41); the distance between the two pins (42) is the same as the width of the lead (3).

6. The motor seal assembly according to claim 4 or 5, characterized in that the stator (1) is provided with an outlet slot (11) for leading out the lead wire (3), and the lead wire (3) is arranged in the outlet slot (11); the pin (42) is sealed in a gap between the lead (3) and the side wall of the outlet groove (11).

7. The motor seal assembly according to claim 6, wherein the stator (1) is provided with a mounting hole (12), an open end of the mounting hole (12) is arranged on the side wall of the outlet slot (11), and an extending direction of the mounting hole (12) forms a preset angle with the extending direction of the outlet slot (11); the plug pins (42) are inserted into the mounting holes (12).

8. The motor seal assembly according to claim 7, characterized in that the mounting hole (12) and the pin (42) are provided with a clamping assembly, and the pin (42) is clamped with the stator (1) through the clamping assembly.

9. The motor seal assembly according to claim 8, wherein the pin (42) is provided with a spring plate (43), and the spring plate (43) is provided with a protrusion (44) protruding out of the pin (42); the side wall of the mounting hole (12) is provided with a yielding groove (122) and a recess (123); the process that the plug pins (42) are inserted into the mounting holes (12) is that the elastic sheet (43) slides along the abdicating groove (122) until the protrusions (44) are correspondingly clamped with the recesses (123).

10. The motor seal assembly according to claim 7, characterized in that one side of the mounting hole (12) is located on the side of the outer periphery of the end cover (2).

11. The motor seal assembly according to claim 1, characterized in that the seal (4) is die cast.

12. An electrical machine comprising a motor seal assembly according to any one of claims 1 to 11.