CN221081019U - Permanent magnet synchronous motor stator winding switching device - Google Patents

Abstract

The utility model relates to a stator winding switching device of a permanent magnet synchronous motor, which comprises a stator assembly, wherein the stator assembly comprises a stator iron core and a stator winding, the stator winding comprises a coil A end, a coil B end and a coil C end, the coil A end, the coil B end and the coil C end are electrically connected with the switching device, an inner cavity of the switching device is sequentially divided into an inner cavity A area, an inner cavity B area and an inner cavity C area from front to back, the lower end surfaces of the inner cavity A area, the inner cavity B area and the inner cavity C area are sequentially provided with an A end contact, a B end contact and a C end contact from left to right, a chute is arranged at the middle of the upper ends of the inner cavity A area, the inner cavity B area and the inner cavity C area, and a telescopic wiring structure is arranged in the chute; through flexible wiring structure, the hand presses flexible wiring structure for flexible wiring structure deviate from the control of limiting plate and can slide side by side, make D end contact can be wantonly with A end contact, B end contact, C end contact connection, conveniently switch the power phase sequence.

Description

Permanent magnet synchronous motor stator winding switching device

Technical Field

The utility model relates to the field of stator winding switching devices, in particular to a permanent magnet synchronous motor stator winding switching device.

Background

The normal operation of the permanent magnet synchronous motor needs to ensure that the phase sequence of the motor is correctly matched, the three-phase stator winding is disordered in the wiring process, so that the permanent magnet synchronous motor cannot normally operate easily, all wires are detached again and then are installed by the existing wiring device, the complexity and time and labor are wasted, and therefore, the permanent magnet synchronous motor stator winding switching device is designed.

The patent number CN202121935908.3 is a Chinese patent utility model, which discloses a connection structure of a stator winding and a power connection wire of a motor, and comprises a stator winding and a power connection wire, wherein the stator winding comprises a framework and a coil wound on the framework, and also comprises a fixing piece, the framework is provided with a fixing hole, one end of an outgoing line of the coil and one end of the power connection wire extend into the fixing hole and are mutually connected in a conductive manner, and the fixing piece is inserted into the fixing hole to jointly fix one end of the outgoing line of the coil and one end of the power connection wire in the fixing hole; according to the connection structure of the stator winding and the power connection wire of the motor, one end of the outgoing line is electrically connected with one end of the power connection wire in the fixing hole on the framework (namely, the electric connection is realized), and the two connection wires are pressed in the fixing hole through the fixing piece, so that the operation is simple, the working procedures are few, and the production efficiency is greatly improved; furthermore, as the two wiring ends are pressed in the fixing holes by the fixing piece, friction with the motor cover is avoided, and noise is obviously reduced, but the utility model has the following problems: the outlet end of the stator winding is wound with the power wire by using the adhesive tape, when the two wires are wrongly connected, the adhesive tape is required to be removed and then connected, if the number of the wires is large, the adhesive tape and the wires are required to be repeatedly removed and connected for many times, the time and the labor are wasted, the working efficiency is low, and the safety of the adhesive tape winding is low.

Disclosure of utility model

The utility model aims at solving the technical problems of difficult correction, irregular wiring and poor safety after wiring error occurs between a stator winding and a power wire by arranging a telescopic wiring structure and a chute and a wiring female head and a wiring male head.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a permanent magnet synchronous motor stator winding auto-change over device, includes stator module, stator module includes stator core and stator winding group, stator winding group includes coil A end, coil B end, coil C end, equal electric connection auto-change over device of coil A end, coil B end, coil C end, auto-change over device's inner chamber divide into inner chamber A district, inner chamber B district, inner chamber C district in proper order from the past backward, inner chamber A district, inner chamber B district, inner chamber C district's lower extreme surface all is equipped with A end contact, B end contact, C end contact from a left side to the right side in proper order, is equipped with the lug between the adjacent contact, just inner chamber A district, inner chamber B district, inner chamber C district's upper end is equipped with the spout in the middle, both ends evenly distributed limiting plate around the spout, just be equipped with flexible wiring structure in the groove of spout, flexible wiring structure includes the female head of wiring, the female head lower extreme is equipped with the flexible cover, the interior surface telescopic link of flexible cover, the lower extreme fixed connection D end contact of telescopic link.

As one preferable mode, a first rectangular ring is arranged at the upper side position of the middle part of the outer surface of the telescopic sleeve, the first rectangular ring is located above the sliding groove, and a second rectangular ring is arranged at the upper side position of the middle part of the outer surface of the telescopic sleeve.

Preferably, a limiting groove is formed in the lower end of the limiting plate, and a second rectangular ring is abutted in the groove of the limiting groove.

As one preferable mode, a third rectangular ring is arranged in the middle of the outer surface of the telescopic rod, and a spring is arranged between the third rectangular ring and the second rectangular ring.

Preferably, the connection female connector is connected with a connection male connector in an adapting mode, and the upper end of the connection male connector is connected with a power line.

Preferably, the height of the bump is the same as the height of the a-terminal contact, the B-terminal contact, and the C-terminal contact.

The utility model has the beneficial effects that:

(1) According to the utility model, the telescopic wiring structure and the sliding groove are arranged, when wiring errors occur between the stator winding and the power line, the telescopic wiring structure is only required to be pressed, so that the spring in the telescopic wiring structure contracts to drive the second rectangular ring to move downwards to be separated from the control of the limiting plate, the telescopic wiring structure slides in the sliding groove, the position of the D-end contact is changed, the D-end contact can be in contact connection with the A-end contact, the B-end contact and the C-end contact at will, and the phase sequence of the power supply can be conveniently switched.

(2) According to the utility model, the positions of the telescopic rod, the telescopic sleeve and the D-end contact are limited by arranging the protruding blocks and the limiting grooves, so that the D-end contact can be always in contact connection with the A-end contact or the B-end contact or the C-end contact after the telescopic wiring structure is moved in the sliding groove for switching.

(3) According to the utility model, the wiring female head and the wiring male head are arranged, and the connection between the switching device and the power line is more convenient and faster through the rapid plug-in of the wiring female head and the wiring male head, so that the safety of electricity utilization is also improved.

In conclusion, the utility model has the advantages of simple structure, convenient and fast switching of the phase sequence of the power supply and high safety, and is particularly suitable for the technical field of stator winding switching devices.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings described below are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a stator assembly.

Fig. 2 is a schematic structural view of a switching device portion.

Fig. 3 is a schematic top cut-away view of a switching device portion.

Fig. 4 is a schematic view in left-hand cut-away of a switching device portion.

Fig. 5 is a schematic view in front cutaway of a portion of the switching device.

Detailed Description

The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 5, the utility model provides a stator winding switching device of a permanent magnet synchronous motor, which comprises a stator assembly 1, wherein the stator assembly 1 mainly aims at generating a rotating magnetic field, the stator assembly 1 comprises a stator iron core 2 and a stator winding group 3, the stator iron core 2 is a main magnetic circuit of the stator assembly and is also a mounting and fixing part of the stator winding 3, the stator iron core 3 consists of fan-shaped punching sheets, ventilation slot sheets, tooth pressing plates, tightening bolts, supporting blocks, positioning ribs and the like, most of the stator winding group 3 is a strip-shaped coil wave winding, the strip-shaped wave winding is characterized by less end connection and convenient disassembly, the stator winding group 3 comprises a coil A end 31, a coil B end 32 and a coil C end 33, the three coil ends are required to be connected with corresponding power wires in an adapting way, the coil A end 31, the coil B end 32 and the coil C end 33 are all electrically connected with the switching device 4, the inner cavity of the switching device 4 is sequentially divided into an inner cavity A area 41, an inner cavity B area 42 and an inner cavity C area 43 from front to back, the inner part of the switching device 4 is processed in a partitioning mode, so that the part of the switching device 4 is more clear, the inner cavity areas are complementarily interfered, the lower end surfaces of the inner cavity A area 41, the inner cavity B area 42 and the inner cavity C area 43 are sequentially provided with an A end contact 44, a B end contact 45 and a C end contact 46 from left to right, each inner cavity area is provided with an A end contact 44, a B end contact 45 and a C end contact 46, when a D end contact 494 is contacted with the A end contact 44, a coil A end 31 is communicated with a power wire of the inner cavity area, when a D end contact 494 is contacted with the B end contact 45, a coil B end 32 is communicated with a power wire of the inner cavity area, when a D end contact 494 is contacted with the C end contact 46, a coil C end 33 is communicated with the power wire of the inner cavity area, a bump 47 is arranged between adjacent contacts, the distance switching device 4 is limited that the D-end contact 494 moves left and right, the upper ends of the inner cavity A area 41, the inner cavity B area 42 and the inner cavity C area 43 are provided with a chute 48 in the middle, the front end and the rear end of the chute 48 are uniformly provided with limiting plates 481, the front end and the rear end of the chute 48 are symmetrically provided with limiting plates 481 for limiting the position of the telescopic wiring structure 49, so that when the telescopic wiring structure 49 is contacted with the front end and the rear end of the two limiting plates 481, the D-end contact 494 is contacted with the A-end contact 44 or the B-end contact 45 or the C-end contact 46, a passage is formed after the permanent magnet synchronous motor is electrified, the telescopic wiring structure 49 is arranged in a groove of the chute 48, the telescopic wiring structure 49 comprises a wiring female head 491, the lower end of the wiring female head 491 is provided with a telescopic sleeve 492, the inner surface of the telescopic sleeve 492 is sleeved with a telescopic rod 493, the telescopic rod 493 forms movable connection, and the lower end of the telescopic rod 493 is fixedly connected with the D-end contact 494.

Further, as shown in fig. 5, a first rectangular ring 495 is disposed at an upper side of a middle portion of the outer surface of the telescopic sleeve 492, and the first rectangular ring 495 is located above the chute 48, for defining a downward pressing distance of the telescopic sleeve 492, and a second rectangular ring 496 is disposed at an upper side of the middle portion of the outer surface of the telescopic sleeve 492, where when the lower end of the first rectangular ring 495 is tightly attached to the upper end of the conversion device 4, the second rectangular ring 496 is just out of the limitation of the limiting groove 482.

Further, the lower extreme of limiting plate 481 is equipped with spacing groove 482, the inslot butt No. two rectangular rings 496 of spacing groove 482, and the spacing groove 482 is used for prescribing a limit to the position of No. two rectangular rings 496, prevents that flexible cover 492 from upwards deviate from, and when No. two rectangular rings 496 are located the inslot of spacing groove 482 for flexible wiring structure 49 can't move about.

Further, as shown in fig. 5, a third rectangular ring 497 is disposed in the middle of the outer surface of the telescopic rod 493, a spring 498 is disposed between the third rectangular ring 497 and the second rectangular ring 496, and the telescopic sleeve 495 is moved down along the telescopic rod 493 by pressing the hand with force, so that the spring 498 is forced to shrink, and the second rectangular ring 496 is separated from the control of the limiting groove 482, so that the telescopic connection structure 49 can be moved left and right.

Further, as shown in fig. 2, the connection female connector 491 is adapted to be connected with the connection male connector 51, the upper end of the connection male connector 51 is connected with the power line 5, and the connection between the switching device and the power line is more convenient and the safety is improved through the quick plugging of the connection female connector and the connection male connector.

Further, as shown in fig. 4, the height of the bump 47 is the same as the heights of the a-terminal contact 44, the B-terminal contact 45, and the C-terminal contact 46, and the bump 47 is used for maintaining the distance between the D-terminal contact 494 and the lower end of the conversion device 4, so as to prevent the telescopic connection structure 49 from causing the D-terminal contact 494 to drop when being displaced left and right in the chute 48, and not reset.

The working process comprises the following steps: firstly, electrically connecting a coil A end 31, a coil B end 32 and a coil C end 33 on a stator winding 3 to a switching device 4, so that an A end contact 44 of each inner cavity area in an inner cavity area A41, an inner cavity area B42 and an inner cavity area C43 in the switching device 4 forms a passage with the coil A end 31, a B end contact 45 forms a passage with the coil B end 32, and a C end contact forms a passage with the inner cavity area C43; further, the wiring male head 51 on the power line 5 is connected with the wiring female head 491 on the telescopic wiring structure 49 in an adapting way; further, the hand presses down the telescopic connection structure 49 forcefully, so that the telescopic sleeve 495 moves downwards along the telescopic rod 493, the spring 498 is stressed to shrink, the second rectangular ring 496 is separated from the control of the limit groove 482, the telescopic connection structure 49 can move left and right, the D-terminal contact 494 can selectively contact with the A-terminal contact 44 or the B-terminal contact 45 or the C-terminal contact 46 to form a passage, and the contact between the D-terminal contact 494 and the A-terminal contact 44 or the B-terminal contact 45 or the C-terminal contact 46 in the inner cavity A region 41, the inner cavity B region 42 and the inner cavity C region 43 is not repeated, so that three power lines are ensured to be connected with the corresponding three coil terminals; when the permanent magnet synchronous motor cannot normally rotate after being electrified, the hand presses down the telescopic wiring structure 49 forcefully, and adjusts the phase sequence of the D-end contact 494 contacting the A-end contact 44 or the B-end contact 45 or the C-end contact 46, so that the permanent magnet synchronous motor normally rotates after being electrified.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front and rear", "left and right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or component in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

Of course, in this disclosure, those skilled in the art will understand that the term "a" or "an" is to be interpreted as "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, and in another embodiment, the number of elements may be multiple, and the term "a" is not to be construed as limiting the number.

The foregoing is merely a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art under the technical teaching of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (6)

1. A permanent magnet synchronous motor stator winding switching device is characterized in that: including stator module (1), stator module (1) includes stator core (2) and stator winding group (3), stator winding group (3) include coil A end (31), coil B end (32), coil C end (33), coil A end (31), coil B end (32), equal electric connection auto-change over device (4) of coil C end (33), the inner chamber of auto-change over device (4) divide into inner chamber A district (41), inner chamber B district (42), inner chamber C district (43) from the past backward in proper order, inner chamber A district (41), inner chamber B district (42), inner chamber C district (43)'s lower extreme surface all is equipped with A end contact (44), B end contact (45), C end contact (46) from a left side to the right side in proper order, is equipped with lug (47) between the adjacent contacts, just inner chamber A district (41), inner chamber B district (42), inner chamber C district (43) upper end are equipped with spout (48) in the middle, both ends evenly distributed limiting plate (481) around spout (48) in the groove, just be equipped with wiring structure (49) in the inner chamber A district (41), wiring structure (492) are equipped with flexible end (492) from left to right side, flexible end (492) are equipped with flexible sleeve (491) and flexible end (491) 3), the lower end of the telescopic rod (493) is fixedly connected with a D-end contact (494).

2. The switching device for stator windings of a permanent magnet synchronous motor according to claim 1, wherein a first rectangular ring (495) is arranged at a position above a middle part of an outer surface of the telescopic sleeve (492), the first rectangular ring (495) is located above the sliding groove (48), and a second rectangular ring (496) is arranged at a position above a middle part of an outer surface of the telescopic sleeve (492).

3. The permanent magnet synchronous motor stator winding switching device according to claim 1, wherein a limiting groove (482) is formed in the lower end of the limiting plate (481), and a second rectangular ring (496) is abutted in the groove of the limiting groove (482).

4. The switching device for stator windings of a permanent magnet synchronous motor according to claim 1, wherein a third rectangular ring (497) is arranged in the middle of the outer surface of the telescopic rod (493), and a spring (498) is arranged between the third rectangular ring (497) and the second rectangular ring (496).

5. A permanent magnet synchronous motor stator winding switching device according to claim 1, characterized in that the connection female terminal (491) is adapted to be connected with a connection male terminal (51), and the upper end of the connection male terminal (51) is connected with a power line (5).

6. A permanent magnet synchronous motor stator winding switching device according to claim 1, characterized in that the height of the bumps (47) is the same as the height of the a-terminal contacts (44), the B-terminal contacts (45), the C-terminal contacts (46).