WO2021258543A1

WO2021258543A1 - Plastic package motor having fireproof structure

Info

Publication number: WO2021258543A1
Application number: PCT/CN2020/112389
Authority: WO
Inventors: 林海奇; 张淼; 陈金强; 王鸿彬
Original assignee: 中山大洋电机股份有限公司
Priority date: 2020-06-24
Filing date: 2020-08-31
Publication date: 2021-12-30
Also published as: CN212627337U

Abstract

Disclosed in the present utility model is a plastic package motor having a fireproof structure, comprising a plastic package stator, a rotating shaft, a rotor assembly, an upper end cover, and a lower end cover. The rotating shaft is mounted on the rotor assembly; the rotor assembly is mounted in the plastic package stator; the upper end cover and the lower end cover are mounted together to form a second cavity; and the plastic package stator and the rotor assembly are mounted in the second cavity; the plastic package stator comprises a stator assembly, a wire clip, and a plastic package; the plastic package is wrapped outside the stator assembly and the wire clip, and part of the wire clip protrudes out of the plastic package; a raised portion protrudes outward from the side surface of the upper end cover; an accommodating cavity is formed inside the raised portion; the raised portion is internally provided with a wire outlet hole; the wire clip is located in the accommodating cavity and directly faces the wire outlet hole; a wire sheath is mounted in the wire outlet hole; and a lead-out wire passes through the wire sheath and is led out of the upper end cover. The wire clip facilitates protecting the lead-out wire during injection molding, and the raised portion increases the space inside the motor, thus facilitating accommodation of the wire clip and the wire sheath. The wire sheath can not only effectively protect the lead-out wire but is easy to mount, and thus, the production efficiency of the plastic package motor is improved.

Description

Plastic package motor with fireproof structure

Technical field:

The utility model relates to a plastic-encapsulated motor with a fireproof structure.

Background technique:

The existing plastic-encapsulated motor with fireproof structure includes a plastic-encapsulated stator, a rotor assembly, a rotating shaft, an upper end cover and a lower end cover. The plastic-encapsulated stator includes a stator assembly and a plastic-encapsulated body. Part insulation and coil winding, the end surface of the stator core is installed with end insulation and then the coil winding is wound, the rotating shaft is installed on the rotor assembly, the upper end cover and the lower end cover are installed together to form a second cavity, the plastic-encapsulated stator and the rotor The component is installed in the second cavity, the plastic-encapsulated stator is provided with a first cavity, the rotor component is installed in the first cavity, and the upper end cover is provided with an outlet hole. The lead wire of the plastic-encapsulated stator passes through the outlet hole to lead out of the plastic-encapsulated motor. . This kind of plastic-sealed motor with fireproof structure, due to the compact internal space, cannot be installed with a protective wire sleeve at the outlet hole of the upper end cover, and can only be sealed with glue on the outlet hole, but this kind of operation is inconvenient, which makes the production efficiency of the plastic-sealed motor Low.

Summary of the invention:

The purpose of the utility model is to provide a plastic-encapsulated motor with a fireproof structure, which can solve the problem of low production efficiency of the plastic-encapsulated motor in the prior art.

The purpose of the utility model is achieved through the following technical solutions.

The purpose of the utility model is to provide a plastic-sealed motor with a fireproof structure, which includes a plastic-sealed stator, a rotating shaft, a rotor assembly, an upper end cover and a lower end cover. Installed in the first cavity, the upper end cover and the lower end cover are installed together to form a second cavity, the plastic-encapsulated stator and the rotor assembly are installed in the second cavity, characterized in that: the plastic-encapsulated stator includes a stator assembly, a wire clip And the plastic package body, the plastic package body is wrapped outside the stator assembly and the wire clip, part of the wire clip protrudes from the plastic package body, the lead wire of the stator assembly is led out of the plastic package body through the wire clip, and the side of the upper end cover or the lower end cover protrudes outward. Boss, the inner side of the boss forms a containing cavity, the boss is provided with an outlet hole, the wire clamp is located in the containing cavity and is opposite to the outlet hole, the outlet hole is installed with a protective wire sleeve, and the lead wire passes through the protective wire sleeve and leads to the upper end Cover outside.

The above-mentioned upper end cover includes an end cover body and a protective cover. The side surface of the end cover body is provided with an escape groove. The shield cover forms the boss outside the escape groove. The side plates on both sides and the top plate arranged on the top of the front panel, the two side plates and the top plate are connected with the end cover body, the housing cavity is formed in the shield, and the outlet hole is arranged on the front plate.

The bottom of the above-mentioned end cover body is provided with an outer flange, the escape groove extends to the outer flange to form a gap, the bottom of the front panel is provided with an inner flange, and the bottoms of the front panel and the two side plates abut the outer flange On the side, the inverted edge of the sheath is embedded in the notch.

The above-mentioned wire clip includes an upper half and a lower half. The bottom of the upper half is provided with a number of upper arc grooves, and the top of the lower half is provided with a number of lower arc grooves corresponding to the upper arc grooves. , The upper arc-shaped groove and the lower arc-shaped groove cooperate to form a through hole for the lead wire to pass through.

The above-mentioned wire clip includes an upper half, a transition portion and a lower half from top to bottom. The bottom of the upper half is provided with a number of upper arc grooves, and the top of the lower half is provided with a number of lower arc grooves. The top and bottom surfaces of the part are respectively provided with semi-circular grooves corresponding to the upper arc-shaped groove and the lower arc-shaped groove, the upper arc-shaped groove is matched with the semi-circular groove, and the semi-circular groove The arc-shaped grooves cooperate to form two rows of through holes for the lead wires to pass through.

Compared with the prior art, the utility model has the following effects:

1) The plastic-encapsulated motor with fireproof structure includes a plastic-encapsulated stator, a rotating shaft, a rotor assembly, an upper end cover and a lower end cover. In the cavity, the upper end cover and the lower end cover are installed together to form a second cavity. The plastic-encapsulated stator and rotor assembly are installed in the second cavity. The body is wrapped around the stator assembly and the wire clamp, and part of the wire clamp protrudes out of the plastic package body. The lead wire of the stator assembly is led out of the plastic package body through the wire clamp. The inner side forms a housing cavity, the boss is provided with an outlet hole, the wire clamp is located in the housing cavity and is opposite to the outlet hole, the outlet hole is installed with a protective wire cover, and the lead wire passes through the protective wire cover and leads out of the upper end cover; The plastic encapsulation is placed in the plastic encapsulation body to protect the lead wires during injection molding. The boss increases the space inside the motor and is convenient for accommodating the wire clip and lead sleeve. The lead sleeve can effectively protect the lead wires and is easy to install, thereby improving the production efficiency of the plastic encapsulated motor.

2) The other advantages of the present utility model are described in detail in the embodiment section.

Description of the drawings:

Figure 1 is a schematic structural diagram of a plastic-encapsulated motor with a fireproof structure provided in the first embodiment of the present invention;

Figure 2 is a cross-sectional view of a plastic-encapsulated motor with a fireproof structure in the first embodiment;

Figure 3 is an enlarged view of D in Figure 2;

Figure 4 is a schematic structural view of the upper end cover of the plastic-encapsulated motor with a fireproof structure in the first embodiment;

Fig. 5 is a schematic structural view of another angle of the upper end cover of the plastic-encapsulated motor with a fireproof structure in the first embodiment;

Fig. 6 is a structural schematic diagram of a plastic-encapsulated stator in a plastic-encapsulated motor with a fireproof structure in the first embodiment;

Fig. 7 is an enlarged view of A in Fig. 6;

Figure 8 is a schematic structural diagram of a plastic-encapsulated motor with a fireproof structure provided in the second embodiment of the present invention;

Figure 9 is a cross-sectional view of a plastic-encapsulated motor with a fireproof structure of the second embodiment;

Figure 10 is an enlarged view of B in Figure 9;

11 is a schematic diagram of the structure of the end cover of the plastic-encapsulated motor with a fireproof structure in the second embodiment;

Fig. 12 is a schematic structural view of a protective cover in a plastic-encapsulated motor with a fireproof structure in the second embodiment;

Fig. 13 is a schematic structural diagram of a plastic-encapsulated stator in a plastic-encapsulated motor with a fireproof structure in the second embodiment;

Fig. 14 is an enlarged view of C in Fig. 13.

detailed description:

Hereinafter, the present utility model will be further described in detail through specific embodiments in conjunction with the accompanying drawings.

Example one:

As shown in Figures 1 to 7, this embodiment provides a plastic-encapsulated motor with a fireproof structure, which includes a plastic-encapsulated stator 1, a rotating shaft 21, a rotor assembly 22, an upper end cover 3 and a lower end cover 4. The rotating shaft 21 is installed on the rotor assembly 22, the plastic-encapsulated stator 1 is provided with a first cavity 10 in the middle, the rotor assembly 22 is installed in the first cavity 10, the upper end cover 3 and the lower end cover 4 are installed together to form a second cavity 30, the plastic-encapsulated stator 1 and the rotor The assembly 22 is installed in the second cavity 30, and is characterized in that: the plastic-encapsulated stator 1 includes a stator assembly 11, a wire clamp 12, and a plastic-encapsulated body 13. The plastic-encapsulated body 13 is wrapped around the stator assembly 11 and the wire clamp 12, and a part of the wire clamp 12 protrudes out of the plastic package body 13. The stator assembly 11 includes a stator core, end insulation, and coil windings. The lead wires of the coil windings are led out of the plastic package body 13 through a clamp 12, and the side of the upper end cover 3 protrudes outward There is a boss 31, the inside of the boss 31 forms a accommodating cavity 32, the boss 31 is provided with an outlet hole 33, the wire clamp 12 protruding out of the plastic package body 13 is located in the accommodating cavity 32 and is opposite to the outlet hole 33, the outlet hole A protective wire cover 34 is installed in the 33, and the lead wire passes through the protective wire cover 34 and is led out of the upper end cover 3. The wire clamp 12 is plastic-encapsulated in the plastic encapsulation body 13 to protect the lead wires during injection molding. The boss 31 increases the internal space of the motor and is convenient for accommodating the wire clamp 12 and the lead sleeve 34. The lead sleeve 34 can effectively protect the lead wires and is convenient for installation. Thereby improving the production efficiency of plastic-encapsulated motors.

The above-mentioned wire clip 12 includes an upper half 121 and a lower half 122. The bottom of the upper half 121 is provided with a plurality of upper arc-shaped grooves 124, and the top of the lower half 122 is provided with the upper arc-shaped grooves 124 correspondingly. There are several lower arc-shaped grooves 125, the upper arc-shaped groove 124 and the lower arc-shaped groove 125 cooperate to form a through hole 127 for the lead wire to pass through. The wire clamp 12 has a simple structure and is easy to install.

The aforementioned boss 31 can also be provided on the lower end cover 4.

Embodiment two:

As shown in Figures 8 to 14, the plastic-encapsulated motor with a fireproof structure provided in this embodiment is similar to the plastic-encapsulated motor with a fireproof structure described in the first embodiment, but the difference lies in:

The upper end cover 3 includes an end cover body 35 and a shield 36. A side surface of the end cover body 35 is provided with an escape groove 351. The shield 36 covers the escape groove 351 to form the boss 31, and the shield 36 It includes a front panel 361, side panels 363 arranged on both sides of the front panel 362, and a top panel 363 arranged on the top of the front panel 361. The two side panels 362 and the top panel 363 are connected to the end cover 35, and the housing 36 is formed In the cavity 360, the outlet hole 33 is provided on the front panel 361. The avoidance groove 351 makes the depth dimension of the wire clamp 12 not limited, and is also convenient for the mold to clamp the wire clamp 12 to ensure that the wire clamp 12 is fixed in the mold. The end cover body 35 and the shield 36 are easy to fix, and the lead wires are easy to install.

The bottom of the end cover body 35 is provided with an outer flange 352, the escape groove 351 extends to the outer flange 352 to form a notch 353, the bottom of the front panel 361 is provided with an inner flange 364, and the front panel 361, two The bottom of each side plate 363 abuts on the outer flange 352, and the inner flange 361 of the sheath 36 is embedded in the notch 353. The inner flange 361 effectively prevents water vapor or dust from entering the second cavity 30.

The above-mentioned wire clip 12 includes an upper half 121, a transition portion 123 and a lower half 122 from top to bottom. The bottom of the upper half 121 is provided with a number of upper arc-shaped grooves 124, and the top of the lower half 122 is provided with a number of upper arc-shaped grooves 124. The lower arc groove 125, the top and bottom surfaces of the transition portion 123 are respectively provided with a semicircular groove 126 corresponding to the upper arc groove 124 and the lower arc groove 125, the upper arc groove 124 and the half The circular groove 126 cooperates, and the semicircular groove 126 cooperates with the lower arc-shaped groove 125 to form two rows of through holes 127 for the lead wires to pass through. The width of the wire clamp 12 is small, which can reduce the width of the avoiding groove 351 of the upper end cover 3 and ensure the strength of the upper end cover 3.

The above embodiments are the preferred embodiments of the utility model, but the embodiments of the utility model are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the utility model are all The equivalent replacement methods are all included in the protection scope of the present invention.

Claims

A plastic-encapsulated motor with a fireproof structure, comprising a plastic-encapsulated stator (1), a rotating shaft (21), a rotor assembly (22), an upper end cover (3) and a lower end cover (4). The rotating shaft (21) is installed on the rotor assembly (22) Above, a first cavity (10) is provided in the middle of the plastic-encapsulated stator (1), the rotor assembly (22) is installed in the first cavity (10), and the upper end cover (3) and the lower end cover (4) are installed together to form The second cavity (30), the plastic-encapsulated stator (1) and the rotor assembly (22) are installed in the second cavity (30), characterized in that: the plastic-encapsulated stator (1) includes a stator assembly (11), a wire clamp (12) and the plastic package (13), the plastic package (13) is wrapped around the stator assembly (11) and the wire clamp (12), part of the wire clamp (12) protrudes out of the plastic package (13), the stator assembly (11) The lead wire of) is led out of the plastic package (13) through the wire clamp (12), the side of the upper end cover (3) or the lower end cover (4) protrudes outward with a boss (31), and the inner side of the boss (31) A accommodating cavity (32) is formed, the boss (31) is provided with an outlet hole (33), the wire clamp (12) is located in the accommodating cavity (32) and is directly opposite to the outlet hole (33), and in the outlet hole (33) A protective wire cover (34) is installed, and the lead wire passes through the protective wire cover (34) and leads out of the upper end cover (3).
A plastic-encapsulated motor with a fireproof structure according to claim 1, wherein the upper end cover (3) or the lower end cover (4) includes an end cover body (35) and a shield (36), and the end cover body The side of (35) is provided with an escape groove (351), the shield (36) covers the escape groove (351) to form the boss (31), and the shield (36) includes a front panel (361) , The side plates (363) set on both sides of the front panel (362), the top plate (363) set on the top of the front panel (361), the two side plates (362), the top plate (363) and the end cover body (35) Connected, the accommodating cavity (360) is formed in the shield (36), and the outlet hole (33) is arranged on the front panel (361).
The plastic-encapsulated motor with a fireproof structure according to claim 2, characterized in that: the bottom of the end cover body (35) is provided with an outer flange (352), and the avoidance groove (351) extends to the outer flange A gap (353) is formed at (352), the bottom of the front panel (361) is provided with an inner flange (364), and the bottom of the front panel (361) and two side plates (363) abut the outer flange (352) On the upper side, the inverted edge (361) of the sheath (36) is embedded in the gap (353).
A plastic-encapsulated motor with a fireproof structure according to claim 1 or 2 or 3, characterized in that: the wire clamp (12) includes an upper half (121) and a lower half (122), and the upper half ( The bottom of 121) is provided with a number of upper arc grooves (124), and the top of the lower half (122) is provided with a number of lower arc grooves (125) corresponding to the upper arc grooves (124). The shaped groove (124) cooperates with the lower arc shaped groove (125) to form a through hole (127) for the lead wire to pass through.
A plastic packaged motor with a fireproof structure according to claim 1 or 2 or 3, characterized in that: the wire clamp (12) includes an upper half (121), a transition portion (123) and a lower part from top to bottom. Half part (122), the bottom of the upper half (121) is provided with a number of upper arc grooves (124), the top of the lower half (122) is provided with a number of lower arc grooves (125), the transition part (123) ) Is provided with a semicircular groove (126) corresponding to the upper arc groove (124) and the lower arc groove (125) on the top surface and the bottom surface, respectively, the upper arc groove (124) and the semicircle The shape groove (126) is matched, and the semicircular groove (126) is matched with the lower arc-shaped groove (125) to form two rows of through holes (127) for the lead wires to pass through.