CN222262287U

CN222262287U - Motor stator structure

Info

Publication number: CN222262287U
Application number: CN202421038955.1U
Authority: CN
Inventors: 于忠友; 刘啟龙; 张盛达; 刘乾; 潘孝勇; 田远远; 李纪元
Original assignee: Ningbo Tuopu Group Co Ltd
Current assignee: Ningbo Tuopu Group Co Ltd
Priority date: 2024-05-14
Filing date: 2024-05-14
Publication date: 2024-12-27
Anticipated expiration: 2034-05-14

Abstract

The utility model provides a motor stator structure, including a stator core, an insulating frame, a stator winding and a winding lead-out assembly, wherein the stator winding includes a first winding, a second winding and a third winding formed by winding an enameled wire, the first winding, the second winding and the third winding are connected in a triangular circuit, the winding lead-out assembly includes a U-phase lead-out plate, a V-phase lead-out plate, a W-phase lead-out plate and an injection molding ring, the injection molding ring covers the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate, the U-phase lead-out plate, the V-phase lead-out plate and the W-phase lead-out plate are arranged at intervals from each other, the lead-out plates are connected with terminals and plugs extending from the injection molding ring, and the injection molding ring is connected to the insulating frame through a connecting portion. The motor stator structure of the present application reduces the lead-out wire heads of the stator winding, avoids complex circuit connections, prevents leakage short circuits, and improves stator production efficiency.

Description

Motor stator structure

Technical Field

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

Background

With the increasing requirements of energy conservation and environmental protection, the motor as a key power source also needs to meet the standards of high efficiency and low energy consumption. The advantages of low noise, long service life, no spark interference, convenient centralized control and the like of the brushless direct current motor are completely met, and the structure manufacturing process of the brushless direct current motor must be improved along with the increasing maturity of the speed regulation technology and the increasing cost performance. A brushless motor is a motor without carbon brushes and a commutator, and the current in a stator winding is controlled by an electronic controller to drive a rotor to rotate. The position of the magnetic pole of the permanent magnet is perceived through the counter electromotive force of a Hall element or a coil by using a set of electronic equipment, and the direction of current in the coil is switched in due time by using an electronic circuit according to the perception, so that the magnetic force in the correct direction is ensured to be generated, and the motor is driven. Because no carbon brush friction exists, the brushless motor has longer service life, higher efficiency and lower noise. And the application of the integrated brushless motor is wider and wider, the product is simple and convenient, and the running stability requirement is higher and higher. At present, the motor stator is complex in connection of a plurality of lead-out wire heads of the stator winding, and has the risk of electric leakage and short circuit, so that the production efficiency of the motor stator is low, and the overall installation efficiency of the motor is influenced.

Disclosure of utility model

The utility model aims to solve the technical problem that a plurality of lead-out wires on a motor stator are complex in connection and have the risk of electric leakage and short circuit, and provides a motor stator structure for overcoming the defects in the prior art.

The utility model provides a motor stator structure, which comprises a stator core, an insulating framework, a stator winding and a winding outgoing line assembly, wherein the insulating framework is fixedly arranged on the stator core, the stator winding is wound on the insulating framework, the winding outgoing line assembly is arranged on the insulating framework and is electrically connected with the stator winding, the stator winding comprises a first winding, a second winding and a third winding which are formed by winding a enameled wire, the tail end of the first winding is connected with the head end of the second winding through a first pass group cable, the tail end of the second winding is connected with the head end of the third winding through a second pass group cable, the head end of the third winding is connected with the head end of the first winding through a third pass group cable, the winding outgoing line assembly comprises a U-phase outgoing plate, a V-phase outgoing plate, a W-phase outgoing plate and an injection molding ring, the injection molding ring covers the U-phase outgoing plate, the V-phase outgoing plate and the W-phase outgoing plate, the U-phase outgoing plate and the W-phase outgoing plate are mutually arranged at intervals, the U-phase outgoing plate is connected with an inserting sheet protruding out of the first injection molding ring and a first pass group cable, the second inserting sheet is connected with a second control ring, the second inserting sheet is connected with a third electric connector, the second electric connector is connected with the second electric connector and a third electric connector, the second connector is connected with the second connector, and the second connector and the third connector is connected with the second connector through a third connector through a second electric connector, the third inserting sheet is used for being electrically connected with a W-connection end of the external controller, and the injection molding ring is connected to the insulating framework through a connecting part.

Compared with the prior art, the motor stator structure has the advantages that the stator winding is wound through the enamelled wire to form the first winding, the second winding and the third winding, the lead-out wire heads of the stator winding are reduced, complex circuit connection is avoided, the three lead-out plates are coated in the injection ring in an injection molding mode and are arranged at intervals, the lead-out plates are reduced from being exposed, leakage short circuit is avoided, the terminals are connected with the overgroup cable, the inserting sheet is connected with the external controller, the circuit is communicated, wiring is facilitated, the injection ring is conveniently installed on the insulating framework through the arrangement of the connecting part, and the installation reliability of the injection ring is improved.

In one possible implementation manner, the connecting portion comprises a plurality of supporting legs, the supporting legs are fixedly connected to the injection molding ring along the circumferential direction, positioning holes are formed in the supporting legs, positioning columns matched with the positioning holes are formed in the insulating framework, and the positioning columns are inserted into the positioning holes.

Compared with the prior art, the injection molding ring can be installed and positioned by adopting the technical scheme, the injection molding ring is convenient to install, and the installation efficiency is improved.

In one possible embodiment, the positioning posts are inserted into the positioning holes and welded to each other.

Compared with the prior art, the injection molding ring can be fixed on the insulating framework by adopting the technical scheme, and the installation reliability of the injection molding ring is improved.

In one possible implementation manner, the first terminal, the second terminal and the third terminal are all provided with wire clamping grooves.

Compared with the prior art, the technical scheme can enable the passing group cable to be clamped in the clamping slot, and improves the connection reliability of the terminal and the passing group cable.

In one possible embodiment, the first winding, the second winding and the third winding are each composed of a plurality of coils connected in parallel.

Compared with the prior art, the resistance value of each phase winding can be reduced by adopting the technical scheme.

In one possible implementation manner, the U-phase extraction plate, the V-phase extraction plate and the W-phase extraction plate are all metal open rings with multi-bending structures, the U-phase extraction plate is located at the inner side of the V-phase extraction plate, the W-phase extraction plate is located at the outer side of the V-phase extraction plate, and the U-phase extraction plate, the V-phase extraction plate and the W-phase extraction plate are all arranged along the vertical extension.

Compared with the prior art, the radial width of the injection molding ring can be reduced by adopting the technical scheme.

In one possible embodiment, the bending part of the metal ring is provided with a reinforcing rib.

Compared with the prior art, the technical scheme can improve the structural strength of the metal open loop.

In one possible embodiment, the first winding, the second winding and the third winding are each composed of a plurality of coils connected in series.

Compared with the prior art, the resistance value of each phase winding can be increased by adopting the technical scheme.

In one possible embodiment, the U-phase tap, the V-phase tap and the W-phase tap are all ring-opened with a metal in an arc-shaped structure, and the U-phase tap, the V-phase tap and the W-phase tap are all arranged to extend in the radial direction.

Compared with the prior art, the axial height of the injection molding ring can be reduced by adopting the technical scheme.

In one possible implementation manner, the motor further comprises a ground wire lead-out plate, the middle part of the ground wire lead-out plate is coated in the injection molding ring, two ends of the ground wire lead-out plate extend out of the injection molding ring, one end of the ground wire lead-out plate is in contact with the stator core, and the other end of the ground wire lead-out plate is electrically connected with a ground wire connecting end of an external controller.

Compared with the prior art, the motor stator can be grounded by adopting the technical scheme, and the safety of an electric appliance is improved.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a second schematic structural diagram of the first embodiment of the present utility model;

FIG. 3 is a third schematic structural diagram of the first embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of a first embodiment of the present utility model;

FIG. 5 is a first schematic diagram of a first embodiment of the present utility model;

FIG. 6 is a second wiring schematic diagram of the first embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a second embodiment of the present utility model;

FIG. 8 is a second schematic structural diagram of a second embodiment of the present utility model;

FIG. 9 is a first schematic diagram of a second embodiment of the present utility model;

FIG. 10 is a second wiring schematic diagram of a second embodiment of the present utility model;

Reference numerals illustrate:

1. The stator core, 2, an insulating framework, 21, a positioning column, 22, an avoidance groove, 3, a stator winding, 31, a first winding, 32, a second winding, 33, a third winding, 34, a coil, 35, a first passing cable, 36, a second passing cable, 37, a third passing cable, 4, a winding lead-out assembly, 41, a U-phase lead-out plate, 411, a first terminal, 412, a first inserting sheet, 42, a V-phase lead-out plate, 421, a second terminal, 422, a second inserting sheet, 43, a W-phase lead-out plate, 431, a third terminal, 432, a third inserting sheet, 44, an injection molding ring, 45, a wire clamping groove, 46, a reinforcing rib, 5, a connecting part, 51, a supporting leg, 511, a positioning hole, 6 and a ground wire lead-out plate.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adapt it as desired to suit a particular application.

In describing embodiments of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.

In embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

At present, the motor stator is complex in connection of a plurality of lead-out wire heads of the stator winding, and has the risk of electric leakage and short circuit, so that the production efficiency of the motor stator is low, and the overall installation efficiency of the motor is influenced.

The application will now be described in further detail with reference to the drawings and to specific examples.

Example 1

Referring to fig. 1 to 6, an embodiment of the present application discloses a stator structure of a motor, comprising a stator core 1, an insulating frame 2, a stator winding 3 and a winding lead-out wire assembly 4, wherein the stator core 1 is a nine-slot core, the insulating frame 2 is fixedly installed on the stator core 1, the stator winding 3 is wound on the insulating frame 2, the winding lead-out wire assembly 4 is installed on the insulating frame 2 and is electrically connected with the stator winding 3, the stator winding 3 comprises a first winding 31, a second winding 32 and a third winding 33 which are formed by winding an enamelled wire, the tail end of the first winding 31 is connected with the head end of the second winding 32 through a first overgroup cable 35, the tail end of the second winding 32 is connected with the head end of the third winding 33 through a second passing cable 36, the head end of the third winding 33 is connected with the head end of the first winding 31 through a third passing cable 37, namely the first winding 31, the second winding 32 and the third winding 33 are connected in a triangular circuit, the winding outgoing line assembly 4 comprises a U-phase outgoing plate 41, a V-phase outgoing plate 42, a W-phase outgoing plate 43 and an injection molding ring 44, the injection molding ring 44 covers the U-phase outgoing plate 41, the V-phase outgoing plate 42 and the W-phase outgoing plate 43, and the U-phase outgoing plate 41, the V-phase outgoing plate 42 and the W-phase outgoing plate 43 are arranged at intervals; the U-phase leading-out plate 41 is integrally connected with a first terminal 411 and a first inserting sheet 412 which extend out of the injection molding ring 44, the first terminal 411 is electrically connected with the first passing group cable 35, the first inserting sheet 412 is used for being electrically connected with a U-phase connection end of an external controller, the V-phase leading-out plate 42 is integrally connected with a second terminal 421 and a second inserting sheet 422 which extend out of the injection molding ring 44, the second terminal 421 is electrically connected with the second passing group cable 36, the second plug 422 is used for being electrically connected with a V-connection end of the external controller, the W-phase lead-out plate 43 is integrally connected with a third terminal 431 and a third plug 432 extending out of the injection molding ring 44, the third terminal 431 is electrically connected with the third cable 37, the third plug 432 is used for being electrically connected with a W-connection end of the external controller, and the injection molding ring 44 is connected to the insulating framework 2 through the connecting part 5.

As can be appreciated from the above, the stator winding 3 forms the first winding 31, the second winding 32 and the third winding 33 through one enameled wire winding, so as to reduce the lead-out wire head of the stator winding 3, avoid complex circuit connection, and through setting up the winding lead-out wire assembly 4, three lead-out plates are coated in the injection molding ring 44 by injection molding and are mutually arranged at intervals, so as to reduce the exposure of the lead-out plates, avoid the occurrence of electric leakage short circuit, connect the terminals and the passing cable, connect the inserting sheet with the external controller, enable the circuit to communicate, facilitate wiring, facilitate the injection molding ring 44 to be installed on the insulating framework 2 through setting the connecting part 5, and improve the installation reliability of the injection molding ring 44.

With continued reference to fig. 1 and 3, in this embodiment, the connection portion 5 includes a plurality of legs 51, a plurality of the legs 51 are integrally connected to the injection ring 44 along a circumferential direction, positioning holes 511 are formed in the legs 51, positioning columns 21 matching with the positioning holes 511 are formed in the insulating frame 2, the positioning columns 21 are inserted into the positioning holes 511, and the positioning columns 21 are inserted into the positioning holes 511 and welded to each other.

With continued reference to fig. 5 and 6, in this embodiment, the first winding 31, the second winding 32, and the third winding 33 are each composed of three coils 34 connected in parallel.

With continued reference to fig. 2 and 4, in this embodiment, the U-phase end tab 41, the V-phase end tab 42 and the W-phase end tab 43 are all open-loop metal with multiple bending structures, the U-phase end tab 41 is located at the inner side of the V-phase end tab 42, the W-phase end tab 43 is located at the outer side of the V-phase end tab 42, the U-phase end tab 41, the V-phase end tab 42 and the W-phase end tab 43 are all arranged along vertical extension, and the bending portion of the open-loop metal is provided with a reinforcing rib 46. The first tab 412, the second tab 422, and the third tab 432 are all disposed to extend vertically.

With continued reference to fig. 2 and fig. 4, in this embodiment, the number of the first terminal 411, the second terminal 421 and the third terminal 431 is three, and the first terminal 411, the second terminal 421 and the third terminal 431 are all provided with the wire clamping groove 45.

With continued reference to fig. 1, 2 and 4, in this embodiment, the motor stator structure further includes a ground lead tab 6, a middle portion of the ground lead tab 6 is wrapped in the injection ring 44, two ends of the ground lead tab 6 extend out of the injection ring 44, one end of the ground lead tab 6 abuts against the stator core 1, and the other end of the ground lead tab 6 is electrically connected with a ground connection end of an external controller.

With continued reference to fig. 1 and 2, in this embodiment, the insulating frame 2 is provided with a avoidance slot 22 for avoiding the first terminal 411, the second terminal 421, and the third terminal 431.

Example two

Referring to fig. 7 to 10, the difference between the present embodiment and the first embodiment is that the first winding 31, the second winding 32 and the third winding 33 are each formed by connecting three coils 34 in series, the U-phase end tab 41, the V-phase end tab 42 and the W-phase end tab 43 are all open-loop metals having arc structures, and the U-phase end tab 41, the V-phase end tab 42 and the W-phase end tab 43 are all arranged to extend in the radial direction. The first tab 412, the second tab 422, and the third tab 432 are all disposed to extend in a radial direction.

In the description of the embodiments of the present application, it should be noted that, in the description of the present application, terms such as "inner", "outer", and the like, refer to directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or components must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present application.

In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "in this embodiment," "specific examples," or "some examples," etc., mean that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A motor stator structure, comprising a stator core (1), an insulating frame (2), a stator winding (3) and a winding lead-out wire assembly (4), wherein the insulating frame (2) is fixedly mounted on the stator core (1), the stator winding (3) is wound on the insulating frame (2), the winding lead-out wire assembly (4) is mounted on the insulating frame (2) and is electrically connected to the stator winding (3), characterized in that the stator winding (3) comprises a first winding (31), a second winding (32) and a third winding (33) formed by winding an enameled wire, the tail end of the first winding (31) and the head end of the second winding (32) are connected via a first cable (33) 5), the tail end of the second winding (32) is connected to the head end of the third winding (33) through a second cable (36), the head end of the third winding (33) is connected to the head end of the first winding (31) through a third cable (37), the winding lead wire assembly (4) comprises a U-phase lead plate (41), a V-phase lead plate (42), a W-phase lead plate (43) and an injection molding ring (44), the injection molding ring (44) covers the U-phase lead plate (41), the V-phase lead plate (42) and the W-phase lead plate (43), and the U-phase lead plate (41), the V-phase lead plate (42) and the W-phase lead plate (43) are arranged at intervals from each other;

The U-phase lead-out plate (41) is connected to a first terminal (411) and a first plug-in piece (412) extending from the injection molding ring (44), wherein the first terminal (411) is electrically connected to the first cable (35), and the first plug-in piece (412) is used to be electrically connected to the U-phase connection end of an external controller;

The V-phase lead-out plate (42) is connected to a second terminal (421) and a second plug-in sheet (422) extending from the injection molding ring (44), the second terminal (421) is electrically connected to the second cable group (36), and the second plug-in sheet (422) is used to be electrically connected to the V-phase connection end of an external controller;

The W-phase lead-out plate (43) is connected to a third terminal (431) and a third plug-in piece (432) extending from the injection molding ring (44); the third terminal (431) is electrically connected to the third cable (37); and the third plug-in piece (432) is used to be electrically connected to the W-phase connection end of an external controller;

The injection molding ring (44) is connected to the insulating frame (2) via a connecting portion (5).

2. The motor stator structure according to claim 1 is characterized in that the connecting portion (5) includes a plurality of legs (51), the plurality of legs (51) are fixedly connected to the injection molding ring (44) along the circumferential direction, a positioning hole (511) is provided on the legs (51), and a plurality of positioning columns (21) matching the positioning holes (511) are provided on the insulating frame (2), and the positioning columns (21) are inserted into the positioning holes (511).

3. The motor stator structure according to claim 2, characterized in that the positioning columns (21) are inserted into the positioning holes (511) and welded to each other.

4. The motor stator structure according to claim 1, characterized in that a wire clamping groove (45) is provided on each of the first terminal (411), the second terminal (421) and the third terminal (431).

5. The motor stator structure according to claim 1, characterized in that the first winding (31), the second winding (32) and the third winding (33) are each composed of a plurality of coils (34) connected in parallel.

6. The motor stator structure according to claim 5 is characterized in that the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all metal open rings with a multi-bending structure, the U-phase lead-out plate (41) is located on the inner side of the V-phase lead-out plate (42), the W-phase lead-out plate (43) is located on the outer side of the V-phase lead-out plate (42), and the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all arranged to extend vertically.

7. The motor stator structure according to claim 6, characterized in that a reinforcing rib (46) is provided at the bending portion of the metal open ring.

8. The motor stator structure according to claim 1, characterized in that the first winding (31), the second winding (32) and the third winding (33) are each composed of a plurality of coils (34) connected in series.

9. The motor stator structure according to claim 8 is characterized in that the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all metal open rings with arc-shaped structures, and the U-phase lead-out plate (41), the V-phase lead-out plate (42) and the W-phase lead-out plate (43) are all extended radially.

10. The motor stator structure according to claim 1 is characterized in that it also includes a ground wire lead-out plate (6), the middle part of the ground wire lead-out plate (6) is covered in the injection molding ring (44), both ends of the ground wire lead-out plate (6) extend out of the injection molding ring (44), one end of the ground wire lead-out plate (6) is in contact with the stator core (1), and the other end of the ground wire lead-out plate (6) is electrically connected to the ground wire connection end of the external controller.