CN216564868U

CN216564868U - Stator and embedment device thereof

Info

Publication number: CN216564868U
Application number: CN202122903576.7U
Authority: CN
Inventors: 杨菲
Original assignee: Terminal Control Technology Nanjing Co ltd
Current assignee: Terminal Control Technology Nanjing Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-17
Anticipated expiration: 2031-11-24

Abstract

The utility model provides a stator and a filling and sealing device thereof, comprising: the encapsulating component is provided with an annular structure and an encapsulating groove suitable for containing an end winding of the stator, a notch of the encapsulating groove is suitable for being matched with the end part of a stator iron core of the stator, so that the encapsulating component and the stator iron core form a closed annular space, and the outer annular surface of the encapsulating component is provided with a glue filling hole and a glue overflowing hole; and the fixing part comprises a fixing part and a connecting part, the fixing part is suitable for being attached to the end part of the encapsulation part, and the connecting part is suitable for being connected with the fixing parts respectively attached to the end parts of the encapsulation part at the two end parts of the stator so as to fix the position of the encapsulation part. Realize the encapsulating from stator both ends tip, shortened the encapsulating route, reduced the encapsulating time for the embedment operation is easier, and need not to clear up fixed part after dismantling, reduces the cost of labor. Therefore, the stator and the encapsulating device thereof provided by the utility model can improve the production efficiency of the stator.

Description

Stator and embedment device thereof

Technical Field

The utility model relates to the technical field of machinery, in particular to a stator and a filling and sealing device thereof.

Background

The motor is an electromagnetic device capable of realizing electric energy conversion or transmission, can convert mechanical energy into electric energy to generate driving torque, and is used as a power source of electric appliances or various machines.

The motor mainly comprises a stator and a rotor positioned in the stator, wherein the stator mainly functions to generate a rotating magnetic field, and the rotor rotates under the action of magnetic force in the magnetic field to generate kinetic energy or rotates in the magnetic field to generate electric energy. The quality of the stator directly affects the quality of the motor, and therefore, the manufacturing process of the stator needs to be strictly controlled.

The manufacturing process for the stator includes potting, typically an outer stator structure, which is typically: assembling a stator core into a machine shell, arranging a supporting shaft center in the stator core, plugging one side of the bottom of the stator core, injecting epoxy glue from the other side, allowing the epoxy glue to flow from one end of the stator to the other end of the stator through a gap in a slot, and then integrating the stator core and the winding ends on two sides under the action of vacuumizing and heating.

In the common glue filling method, due to the vacuumizing effect, glue can flow to each position along the opening of the motor, after heating and curing, the size of the stator changes, particularly, the size of the winding end part on the glue injection side is easy to be out of tolerance, so that places with unqualified sizes need to be treated, the cured epoxy glue has high hardness and is difficult to clean, the subsequent assembly of the motor can be influenced, and the production efficiency is reduced.

Therefore, how to improve the production efficiency of the stator becomes a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of how to improve the production efficiency of the stator.

In order to solve the above problems, the present invention provides a stator and a potting device thereof, wherein the potting device comprises:

the encapsulating component is provided with an annular structure and an encapsulating groove suitable for containing an end winding of the stator, a notch of the encapsulating groove is suitable for being matched with the end part of a stator iron core of the stator, so that the encapsulating component and the stator iron core form a closed annular space, and the outer annular surface of the encapsulating component is provided with a glue filling hole and a glue overflowing hole;

and the fixing part comprises a fixing part and a connecting part, the fixing part is suitable for being attached to the end part of the encapsulation part, and the connecting part is suitable for connecting the fixing parts respectively attached to the end parts of the encapsulation part at the two end parts of the stator so as to fix the position of the encapsulation part.

Optionally, the potting component comprises:

the non-wiring side encapsulation part is provided with an encapsulation groove suitable for accommodating a non-wiring end winding of the stator and is suitable for being matched with a first end of a stator core of the stator to form a non-wiring side closed annular space;

and the wiring side encapsulating part is provided with an encapsulating groove suitable for containing a wiring end winding of the stator, is matched with the second end of the stator core of the stator to form a wiring side closed annular space, and the glue overflowing hole of the wiring side encapsulating part is also suitable for leading out a wire outlet of the wiring end winding.

Optionally, the fixing member comprises:

a non-wiring side fixing member provided with a non-wiring side potting contact portion which is in fitting contact with a portion on the opposite side of the opening of the potting groove of the non-wiring side potting member;

the wiring side fixing piece is provided with a wiring side embedding contact part which is in contact with the part, opposite to the opening of the embedding groove, of the wiring side embedding part in a fitting manner;

one end of the connecting member is adapted to be connected to the non-wiring-side fixing member, and the other end is adapted to be connected to the wiring-side fixing member, so that the non-wiring-side fixing member and the wiring-side fixing member fix the non-wiring-side potting member and the wiring-side potting member to both end portions of the stator core of the stator.

Optionally, in an annular direction along the potting groove, a radian of an offset between the glue pouring hole and the glue overflowing hole is less than 45 degrees.

Optionally, the glue filling hole and the glue overflowing hole are arranged between two adjacent connecting pieces.

Optionally, the number of said connectors is at least 2.

Optionally, an inner diameter of an inner ring slot wall of the potting slot is larger than a diameter of an inner circle of the stator.

Optionally, the fixing member includes an end attaching portion and an inner ring supporting portion, which are sequentially arranged along an axial direction of the fixing member, the end attaching portion is adapted to be attached to an annular end surface of the potting member, and the inner ring supporting portion is adapted to be supported by an inner ring groove wall of the potting groove.

Optionally, the end portion attaching portion includes a planar portion, and a supporting surface of the planar portion is perpendicular to an end surface of the fixing member.

Optionally, the end portion fitting portion has a fixing hole, and the connecting member includes:

a connecting device;

the connecting rod is arranged between the two end part attaching parts;

the connecting device or the connecting rod penetrates through the fixing hole to be fixed, so that the end part attaching part is connected to the connecting rod.

An embodiment of the present invention further provides a stator, including:

a stator winding including a stator winding first end and a stator winding second end;

the encapsulation winding part is of an annular structure and comprises a first encapsulation winding part and a second encapsulation winding part, the first encapsulation winding part is fixedly connected with the first end of the stator winding, and the second encapsulation winding part is fixedly connected with the second end of the stator winding.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the encapsulation device comprises an encapsulation part, a sealing part and a sealing ring, wherein the encapsulation part is of an annular structure and is provided with an encapsulation groove suitable for accommodating an end winding of the stator, a notch of the encapsulation groove is suitable for being matched with the end part of a stator core of the stator to form a closed annular space, and the outer annular surface of the encapsulation part is provided with a glue filling hole and a glue overflowing hole; and the fixing part comprises a fixing part and a connecting part, the fixing part is suitable for being attached to the end part of the encapsulation part, and the connecting part is suitable for connecting the fixing parts respectively attached to the end parts of the encapsulation part at the two end parts of the stator so as to fix the position of the encapsulation part. Therefore, when the stator is encapsulated, the relative positions of the encapsulating part and the end parts of the two ends of the stator are fixed through the fixing part, and the encapsulating encapsulation of the stator is completed from the end parts of the two ends of the stator.

The encapsulating device provided by the utility model can be used for simultaneously encapsulating the stator from the end parts of the two ends of the stator, so that the encapsulating path can be shortened, the encapsulating time can be shortened, and the production efficiency of the stator can be improved; and, the relative position of embedment part and stator can be guaranteed when carrying out the embedment to the stator to the fixed part relative position of embedment part for do not dismantle the embedment part and can not influence the size of stator yet after the stator embedment is accomplished, from the clearance that can avoid accomplishing the stator of encapsulating, further improve production efficiency, reduce the cost of labor.

In an alternative aspect, in the potting device provided by the present invention, the potting member includes: the non-wiring side encapsulation part is provided with an encapsulation groove suitable for accommodating a non-wiring end winding of the stator and is suitable for being matched with a first end of a stator core of the stator to form a non-wiring side closed annular space; and the wiring side encapsulating part is provided with an encapsulating groove suitable for containing a wiring end winding of the stator, is matched with the second end of the stator core of the stator to form a wiring side closed annular space, and the glue overflowing hole of the wiring side encapsulating part is also suitable for leading out a wire outlet of the wiring end winding. Therefore, on one hand, although the encapsulating parts are respectively positioned at two sides of the stator, the encapsulating parts at the two sides have basically the same structure, and only the glue overflowing hole parts are different from each other, so that the structural requirement on the encapsulating parts can be reduced, and the processing of the encapsulating parts is convenient; on the other hand, the excessive glue hole that the embedment part set up in wiring side can be used for drawing forth the line of serving winding simultaneously, only through an excessive glue hole, can satisfy simultaneously excessive glue and the requirement of being qualified for the next round of competitions and drawing forth, makes the structure of embedment device is more succinct to can also avoid setting up the influence of outlet to the encapsulating alone, make the structure more reasonable, convenient to use.

Drawings

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

Fig. 1 is a schematic overall structure diagram of a potting device provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of the potting apparatus shown in FIG. 1;

fig. 3 is a plan view of a non-wire side potting part of the potting apparatus shown in fig. 1;

FIG. 4 is a cross-sectional view B-B of the non-wire side potting component shown in FIG. 3;

fig. 5 is a plan view of a wire-side potting part of the potting apparatus shown in fig. 1;

FIG. 6 is a C-C cross-sectional view of the wire-side potting component shown in FIG. 5;

fig. 7 is a schematic view illustrating a state of an assembling process of a fixing member of the potting apparatus according to the embodiment of the present invention;

fig. 8 is a schematic view of an assembly process of the potting apparatus provided by the embodiment of the present invention;

FIG. 9 is a top view of a stator provided by an embodiment of the present invention;

fig. 10 is a D-D sectional view of the stator shown in fig. 9.

1	Potting component	11	Pouring and sealing groove
				2	Fixing member	12	Glue filling hole
21	Fixing piece	13	Glue overflow hole
				22	Connecting piece	14	Non-wiring side potting part
221	Connecting rod	15	Connection side potting part
				222	Connecting device	213	End part bonding part
2130	Plane part	214	Inner ring support
				111	Inner ring groove wall	112	Outer ring side wall
2210	Mounting hole	41	First end of stator winding
				4	Stator winding	5	Encapsulating winding portions
42	Second end of stator winding	52	Encapsulating the second end of the winding
				51	Potting the first end of the winding

Detailed Description

As can be seen from the background art, the production efficiency of the stator is low.

In order to improve the production efficiency of the stator, the utility model provides the stator and the encapsulating device thereof, wherein the encapsulating device comprises:

the encapsulating component is of an annular structure and is provided with an encapsulating groove suitable for containing an end winding of the stator, a notch of the encapsulating groove is suitable for being matched with the end part of a stator core of the stator to form a closed annular space, and the outer annular surface of the encapsulating component is provided with a glue filling hole and a glue overflowing hole;

When the stator is filled and sealed, the fixing part is used for fixing the relative positions of the filling and sealing part and the end parts of the two ends of the stator, and the filling and sealing glue is filled into the filling and sealing groove of the filling and sealing part from the glue filling ports at the end parts of the two ends of the stator at the same time, so that the end parts of the two ends of the stator are filled and sealed. Therefore, the potting device performs potting from the two ends of the stator, so that the potting distance is shortened, the potting time is saved, and the production efficiency of the stator is improved; and, through using the relative position of fixed embedment part of fixed part and stator both ends tip to guarantee the precision of embedment completion back stator, make and not dismantle the embedment part and also can not influence the size of stator after the stator embedment is accomplished, thereby can avoid the clearance to the stator of accomplishing the encapsulating, further improve production efficiency, reduce the cost of labor.

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the indication of the direction or the positional relationship referred to in the present specification is based on the direction or the positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and it is not intended to indicate or imply that the indicated device must have a specific direction, be configured in a specific direction, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, fig. 1 is a schematic overall structure diagram of an encapsulation apparatus according to an embodiment of the present invention; fig. 2 is a cross-sectional view a-a of the potting apparatus shown in fig. 1.

As shown in the drawings, the potting device 1 provided in the embodiments of the present application includes:

the stator comprises an encapsulating part 1, a stator core 3 and a sealing ring, wherein the encapsulating part 1 is of an annular structure and is provided with an encapsulating groove 11 suitable for containing an end winding of the stator, a notch of the encapsulating groove 11 is suitable for being matched with the end part of the stator core 3 of the stator, so that the encapsulating part and the stator core form a closed annular space, and the outer annular surface of the encapsulating part 1 is provided with an encapsulating hole 12 and an adhesive overflowing hole 13;

and a fixing member 2 including a fixing member 21 and a connector 22, wherein the fixing member 21 is adapted to be attached to an end portion of the potting member 1, and the connector 22 is adapted to be connected to the fixing members 21 attached to end portions of the potting member 1 at both ends of the stator, respectively, so as to fix a position of the potting member 1.

It should be noted that, the "the notch of the potting groove 11 is adapted to fit with the end of the stator core 3 of the stator, so that the potting component 1 and the stator core form a closed annular space" means that the radial dimension of the notch of the potting groove 11 is not greater than the dimension of the end of the stator core, so that the end of the stator core 3 can avoid the notch from being exposed inside or outside the inner diameter or the outer diameter of the stator core, and since the stator is a closed-slot stator, the opening of the closed-slot is very small, and can be approximately without an opening, therefore, the space formed between the potting component 1 and the stator core 3 is a closed annular space. Therefore, the "closed annular space" described herein does not mean an absolutely closed space, and is a space where pouring and glue overflowing cannot be performed except for the glue pouring hole 12 and the glue overflowing hole 13.

The above is the specific case of the closed annular space when the stator is a closed slot stator, and when the stator is a non-closed slot, in one embodiment, an annular sealing portion may be added at the inner circumference of the stator core 3 to form a close annular space around the notch of the stator.

Specifically, after the fixing member 2 on one side is mounted, the annular sealing portion is placed inside the stator such that one end of the annular sealing portion is in contact with the inner ring support portion 214 (shown in fig. 2) of the fixing member 21 on the mounted side, and the other end is in contact with the inner ring support portion 214 (shown in fig. 2) of the fixing member 21 on the other side, thereby completing the overall assembly of the sealing device. The notch of the stator of the sealed non-closed slot type of annular sealing portion can not leak glue when encapsulating to can not influence the encapsulating operation of stator.

The "said fixing member 21 is adapted to fit to the end of said potting member 1" herein means that the fixing member 21 fits to at least the annular end face of the potting member 1, and may fit to other parts of the end, such as: the inner ring surface of the stator core 3 at the end portion.

It is easy to understand that, the glue filling hole 12 and the glue overflow hole 13 are both disposed on the potting part 1 at the end parts of the two ends of the stator core 3, and the positions of the glue filling hole 12 and the glue overflow hole 13 can correspond to each other, so that the placement of the potting device during glue filling can be facilitated.

The glue filling hole 12 and the glue overflow hole 13 can be holes directly formed on the upper surface of the pouring groove 11 or guide ports protruding outwards, the size of the glue filling hole 12 and the size of the glue overflow hole 13 can be consistent, and the glue filling hole can be randomly arranged, so that the glue filling is conveniently realized; in addition, when the glue filling hole 12 and the glue overflow hole 13 are set to be convex structures, the outer ring side wall 112 of the corresponding part can be designed to be thin, so that after the glue filling is completed conveniently, the redundant part of the outer ring side wall 112 larger than the filling and sealing part 1 is cleaned (namely, the notch part of the convex arrangement of the glue filling hole 12 and the glue overflow hole 13).

In this way, when stator potting is required, the fixture 21 of the fixing member 2 located at the first end of the stator core 3 is obtained, then the potting member 1 and the fixture 21 are assembled, then the fixture 21 with the potting member 1 is attached to the first end of the stator core 3, when the fixture 21 is attached, the end winding of the first end is accommodated in the potting groove 11 of the potting member 1, then the fixture 21 of the fixing member 2 located at the second end of the stator core 3 is obtained, then the potting member 1 and the fixture 21 are assembled, and the fixture 21 with the potting member 1 is attached to the second end of the stator core 3, and further the fixture is fixed by the connector 22 so as to ensure the relative positions of the potting member 1 and the stator core 3, thereby completing the attachment of the entire potting device.

After the installation is accomplished, from encapsulating hole 12 of embedment part 1 to the inside encapsulating of embedment groove 11, when the excessive gluey condition of glue hole 13 department appearance, stop the encapsulating, will irritate gluey stator and embedment device and carry out subsequent heating solid gluey, demolish fixed part 2 at last, remain embedment part 1, just so accomplished the whole embedment of stator.

It should be noted that, during the glue filling operation, vacuum pumping is performed, and the vacuum pumping is mainly used for vacuum defoaming, that is, the vacuum pressure is used to remove bubbles generated in the glue flowing process during the glue filling. When vacuum defoaming is carried out, glue needs to be poured in the operation time, otherwise leveling is affected, and the glue is solidified, so that control of glue pouring time is very important. According to the encapsulating device provided by the utility model, glue is injected from the end parts of the two ends of the stator simultaneously during the glue injection, so that the encapsulating device provided by the utility model can shorten the glue injection distance and reduce the glue injection time, thereby reducing the difficulty of vacuumizing operation in the glue injection and improving the production efficiency of the stator.

Therefore, the potting of the stator is completed by potting the glue from the two end parts of the stator core 3, the distance of the potting is shortened, the time required by potting is shortened, the difficulty of the potting operation is further reduced, and the production efficiency of the stator can be improved; and, the relative position of embedment part 1 and stator can be ensured when carrying out the embedment to the stator to the fixed relative position of embedment part 1 of fixed part 2 for do not dismantle embedment part 1 after the stator embedment is accomplished and also can not influence the size of stator, thereby can avoid the clearance to the stator of accomplishing the encapsulating, further improve production efficiency, reduce the cost of labor.

In order to fix the potting member 1 conveniently, in a specific embodiment, please refer to fig. 1 and fig. 2, in the potting device provided in this embodiment of the present application, the fixing member 21 may include an end attaching portion 213 and an inner ring supporting portion 214 sequentially arranged along an axial direction thereof, the end attaching portion 213 is adapted to attach to an annular end surface of the potting member 1, and the inner ring supporting portion 214 is adapted to support the inner ring groove wall 111 of the potting groove 11.

In this way, when the potting member 1 is attached to the fixture 21, the potting member 1 can be fitted to the inner ring support portion 214 of the fixture 21, and the fixture 21 to which the potting member 1 is attached can be attached to one end of the closed-slot stator.

It can be seen that the potting device provided by the embodiment of the application can facilitate the positioning of the potting part 1 when being mounted on the fixing part 21, thereby simplifying the assembly process and improving the assembly accuracy; meanwhile, the inner ring groove wall 111 of the potting part 1 can be supported, and the structural strength of the inner ring groove wall 111 in the potting process is improved.

The end portion attaching portion 213 is used for attaching an annular end face of the groove bottom portion of the potting groove 11, the inner ring supporting portion 214 is attached to an inner ring groove wall 111 (shown in fig. 4) of the potting groove 11, and the connecting member 22 of the fixing member 2 can be used for attaching an outer ring side wall 112 (shown in fig. 4) of the potting groove 11, so that the fixing member 2 can fix the relative position of the potting device 1, and the potting member 1 is not prone to shift during glue pouring.

Of course, further, the axial thickness of the inner ring support portion 214 may be made larger than the axial thickness of the potting member 1, so that when the fixing member 21 mounted with the potting member 1 is mounted at one end of the closed slot stator, the inner ring support portion 214 may be inserted into the closed slot stator, thereby more conveniently positioning the fixing member 21, the potting member 1 and the closed slot stator, and further improving the encapsulation efficiency.

Of course, the radial dimension of the outer annular surface of the inner annular support portion 214 may be made equal to the radial dimension of the inner annular surface of the stator core of the closed-slot stator, so that the positioning accuracy may be further improved.

It is easily understood that the fixing pieces 21 mounted to both sides of the closed slot stator may each include an end attaching portion 213 and an inner ring supporting portion 214 which are sequentially provided in an axial direction thereof.

Wherein the axial direction is the direction indicated by the arrow R shown in fig. 1.

It should be noted that, when the stator is a closed slot stator, the structure of the inner ring support part 214 may be as shown in fig. 1 and fig. 2, and when the stator is a non-closed slot stator, in a specific embodiment, the inner ring support part 214 may further be increased in size, that is, the length of the inner ring support part 214 is extended in the axial direction of the stator core, so that the two inner ring support parts 214 have a size in the axial direction of the stator core 3 that can completely cover the inner circle of the stator.

The axial direction of the stator core is indicated by the arrow a in fig. 2.

Of course, the coil winding of the stator needs to be led out and connected with an external power supply, so that the outgoing line of the coil winding of the closed-slot stator needs to be led out during potting, and in order to ensure the potting and facilitate the outgoing line of the coil winding, in a specific embodiment, an embodiment of the present application further provides a potting device, please refer to fig. 3 to 6 in conjunction with fig. 1, fig. 3 is a plan view of a non-wiring-side potting component of the potting device shown in fig. 1, fig. 4 is a B-B cross-sectional view of the non-wiring-side potting component shown in fig. 3, fig. 5 is a plan view of a wiring-side potting component of the potting device shown in fig. 1, and fig. 6 is a C-C cross-sectional view of the wiring-side potting component shown in fig. 5.

As shown in the figures, the embodiment of the present application further provides the potting component 1 of a potting device, including:

a non-connection side potting member 14 provided with a potting groove 11 adapted to accommodate a non-connection end winding of the stator and adapted to cooperate with a first end of a stator core 3 of the stator to form a non-connection side closed annular space;

and the wiring side encapsulating part 15 is provided with an encapsulating groove 11 suitable for containing a wiring end winding of the stator, is matched with the second end of the stator iron core 3 of the stator to form a wiring side closed annular space, and the glue overflowing hole 13 of the wiring side encapsulating part 15 is also suitable for leading out a wire outlet of the wiring end winding.

Of course, when the glue overflow hole 13 on the wiring-side potting part 15 is used for leading out the outgoing line of the coil winding, the size setting can be based on the overall size of the led-out outgoing line, so as to facilitate leading out the outgoing line of the coil winding after the glue filling is completed.

In one embodiment, as shown in fig. 4, it can be seen that the aperture size of the glue overflow opening 13 (which is used as a wire outlet hole) is larger than that of the glue filling hole 12, so that the lead of the coil winding can be conveniently led out during glue filling. Of course, as shown in fig. 3 and 4, when the glue overflow hole 13 is adapted to lead out the outgoing lines of the terminal windings at the same time, it is also provided in the form of a convex notch, and in other ways, an opening may also be provided directly on the potting groove 11.

By dividing the potting member 1 into the non-connection-side potting member 14 and the connection-side potting member 15, before potting, the non-connection-side potting member 14 is mounted on the non-outgoing-line leading-out side of the closed-slot stator, the connection-side potting member 15 is mounted on the outgoing-line leading-out side of the closed-slot stator, then potting is performed, and after potting is completed, the outgoing line of the winding coil is led out from the glue overflow port 13 of the connection-side potting member 15.

Thus, on one hand, although the potting parts 1 are respectively positioned at two sides of the stator, the structures of the potting parts 1 at the two sides are basically the same, and only the glue overflow holes 13 are slightly different, so that the structural requirements on the potting parts 1 can be reduced, and the processing of the potting parts 1 is convenient; on the other hand, the glue overflow hole 13 that the embedding part 15 set up on the wiring side can be used for drawing forth the line of wiring end winding simultaneously, only through one glue overflow hole 13, can satisfy simultaneously overflow glue and the requirement of being qualified for the next round of competitions and drawing forth, makes the structure of embedment device is more succinct to can also avoid owing to set up the influence of outlet to the encapsulating alone, make the structure more reasonable, convenient to use.

When the potting member 1 includes the non-wire-side potting member 14 and the wire-side potting member 15, in order to fix the potting member 1, in a specific embodiment, the fixing member 21 of the potting apparatus provided in the embodiment of the present application may further include:

a non-connection-side fixing member 211 provided with a non-connection-side potting contact portion which is in contact with a portion of the non-connection-side potting member 14 opposite to the opening of the potting groove 11;

a terminal-side fixing member 212 provided with a terminal-side potting contact portion which is in contact with a portion of the terminal-side potting member 15 opposite to the opening of the potting groove 11;

the connector 22 has one end adapted to be connected to the non-connection-side fixing piece 211 and the other end adapted to be connected to the connection-side fixing piece 212, so that the non-connection-side fixing piece 211 and the connection-side fixing piece 212 fix the non-connection-side potting part 14 and the connection-side potting part 15 to both ends of the stator core 3 of the stator.

Since the potting member 1 needs to be attached to both end portions of the stator core 3 and to correspond to the size of the stator core 3, the fixing member 2 needs to be fixed to ensure the dimensional accuracy of the stator after potting is completed.

The potting members 1 are fixed to the end portions of both ends of the stator core 3, so that the fixing members 21 need to be provided as corresponding two parts, and the fixing members 21 at both ends of the stator core 3 are connected by the connecting members 22 for fixing the non-connection-side potting member 14 and the connection-side potting member 15 of the stator, respectively, so that the relative positions of the potting device and the stator core 3 can be fixed, and the accuracy of the size of the stator after potting is ensured.

In order to form a closed annular space between the potting part 1 and the stator core 3, reference is therefore made to fig. 3 to 6 in conjunction with fig. 2 in an embodiment.

As shown in the drawing, the inner diameter of the inner ring groove wall 111 of the potting groove 11 is larger than the diameter of the inner circle of the stator.

The inner diameter of the inner ring groove wall 111 of the encapsulation groove 11 is larger than the diameter of the inner circle of the stator, so that when the encapsulation groove 11 is attached to the end portion of the stator, the inner ring groove wall 111 of the encapsulation groove 11 can fall on the end portion of the stator, and the inner ring groove wall 111 of the encapsulation groove 11 and the end portion of the stator are not staggered to generate gaps, so that glue leakage in the encapsulation process is caused, and the encapsulation effect is influenced.

It is easy to understand that, on the basis of ensuring that the inner ring slot wall 111 of the potting slot 11 is sufficiently attached to the end of the stator and that the potting slot 11 can accommodate the end winding, the diameter of the inner ring slot wall 111 cannot be too large than the diameter of the inner circle of the stator, so as to prevent the inner ring slot wall 111 from being too thin and causing deformation during the potting process.

As shown in fig. 4 and 6, when the outer annular sidewall 112 of the potting groove 11 is specifically designed, the thickness of the outer annular sidewall 112 may be thicker than that of the inner annular sidewall 111, so that the bearable force is larger, the potting component 1 is fixed by the fixing component 2 and the potting process is more stable, the risk of deformation during the potting process is reduced, and the quality of the potted stator is ensured.

In a specific embodiment, in order to enhance the structural strength of the potting device, a reinforcing surface may be added to the outer annular sidewall 112, please refer to fig. 3-6, as shown in the figures, a reinforcing surface is added to a portion where the outer annular sidewall 112 contacts with the end of the stator, so that, on one hand, when the fixing member 2 is used to fix the potting member 1, the connection member 22 of the potting member 1 and the fixing member 2 can be contacted more tightly, the effect of fixing the potting member 1 is better, on the other hand, the deformation resistance of the outer annular sidewall 112 can be further improved, and the quality of the stator after potting can be improved.

In order to ensure that the poured potting adhesive can maximally fill the inner space of the potting groove 11 to meet the amount of the potting adhesive required for the stator, please refer to fig. 3 and 5 in conjunction with fig. 1 in an embodiment.

As shown in fig. 3 and 5, in the potting device provided in the embodiment of the present application, in the annular direction along the potting groove 11, the radian of the offset between the glue filling hole 12 and the glue overflow hole 13 is less than 45 degrees.

Wherein the annular direction is indicated by an arrow R in fig. 1, that is, in the direction perpendicular to the picture in fig. 3 and 5, the glue filling hole 12 is arranged at a position within 45 degrees of the glue overflow hole 13.

Of course, the arrow R in the drawings is only for indicating the circumferential direction, and does not limit the clockwise direction or the counterclockwise direction.

Like this, encapsulating hole 12 with the radian of the offset between excessive glue hole 13 is less than 45 degrees, can be so that when carrying out the encapsulating, only when reaching sufficient gluey volume, just take place overflowing of casting glue for the gluey volume that can the embedment is more, improves the effect of stator encapsulating.

In order to facilitate control of the potting device during glue filling, in an embodiment, please refer to fig. 7 and 8, fig. 7 is a schematic view illustrating a state of an assembly process of the fixing part 2 of the potting device according to an embodiment of the present invention, and fig. 8 is a schematic view illustrating an assembly process of the potting device according to an embodiment of the present invention.

As shown in the drawings, in the potting device provided in the embodiment of the present application, the potting hole 12 and the glue overflow hole 13 are disposed between two adjacent connectors 22.

When the stator encapsulating, need use the instrument of encapsulating to connect encapsulating hole 12 and excessive gluey hole 13, then use sealed glue to seal encapsulating instrument and encapsulating hole 12 and two positions that are connected with excessive gluey hole 13, guarantee the condition that can not take place to leak and glue when the encapsulating.

Therefore, the glue filling hole 12 and the glue overflow hole 13 are arranged between the two connecting pieces 22, so that the connection of a glue filling tool and the operation of glue filling can be facilitated.

Certainly, the glue filling tool can be a funnel or a pipe, and the glue filling hole 12 and the glue overflow hole 13 can be conveniently connected for glue filling.

In order to fix the potting component 1 without glue leakage caused by improper fixation of the potting component 1 during the glue filling process, the number of the connecting members 22 may be at least 2.

In an embodiment, with continuing reference to fig. 7 and 8, 4 connecting members 22 may be provided, and are respectively and uniformly fixed on the fixing member 21, so as to ensure that the potting component 1 can be stably fixed, ensure that the relative positions of the potting component 1 and the stator core 3 do not deviate during potting, and ensure the overall dimensional accuracy of the stator after potting is completed.

Of course, in other embodiments, the number of the connectors 22 may also be set to 6, 8, etc. to ensure the stability of the assembled fixing part 2 and potting part 1.

After the integral assembly of the potting device is completed, in order to facilitate glue filling, in a specific embodiment, please refer to fig. 8, in the potting device provided in this embodiment of the present application, the end portion attaching portion 213 may further include a flat portion 2130, and a supporting surface of the flat portion 2130 is perpendicular to an end surface of the fixing member 21.

It is easy to understand that, the arrangement of the planar portion 2130 may enable the fixing component 2 to be horizontally disposed during glue pouring, so that the fixing component 2 may not rotate, and pouring of glue of the pouring glue is facilitated.

As shown in fig. 8, in one specific embodiment, the number of the plane portions 2130 is 4, and the number of the plane portions 2130 is not limited, so that the fixing member 2 can be horizontally placed, and the glue is not rotated during the glue filling process.

Of course, in order to ensure the stability of the entire potting device, the flat portions 2130 of the fixing members 21 located at both ends of the stator are adapted to be on the same side of the axis of the stator when assembling.

To facilitate the fixing of the fixing member 21 by the connecting member 22, please refer to fig. 8 in conjunction with fig. 2 in an embodiment.

As shown in the figures, in the potting device provided in the embodiment of the present application, the end attaching portion 213 may be opened with a fixing hole, and the connecting member 22 includes:

a connecting device 222;

a connecting rod 221 provided between the end bonding portions 213;

the connection device 222 or the connection rod 221 is fixed through the fixing hole, so that the end bonding portion 213 is connected to the connection rod 221.

The fixing hole is used to connect the connection rod 221 to the end attaching portion 213 using the connection means 222.

In one embodiment, the connecting rod 221 may pass through the fixing hole, in this case, a thread may be disposed at an end portion of the connecting rod 221 extending out of the fixing hole, the connecting device 222 may be a nut, the thread inside the nut matches the thread disposed on the connecting rod 221, and the nut is screwed to the end portion of the connecting rod 221 to fix the connecting rod 221 and the end portion attaching portion 213.

In another embodiment, the connecting rod 221 may be provided with a mounting hole 2210 at an end portion thereof, as shown in fig. 8, which is an operating state in which the connecting rod 221 is placed in the fixing hole and the connecting device 222 is mounted in fig. 8. When assembling the connecting device 222, the connecting device 222 may be a bolt or a screw, and the size of the nut is larger than the size of the fixing hole, so that the connecting rod 221 does not slide out of the fixing hole with the connecting device 222.

Of course, in order to facilitate the disassembly of the fixing member 2 after potting, before assembly, a mold release agent may be first applied to the outer annular surface of the inner ring support portion 214 of the fixing member 21 and the inner circumference of the stator core 3.

Thus, when the potting device is specifically mounted, first, the connecting device 222 is passed through the fixing hole to connect the connector 22 with the terminal-side fixing member 212; then, the wiring-side potting part 15 is taken and sleeved on the assembled wiring-side fixing part 212, wherein the potting hole 12 and the glue overflow hole 13 are positioned between two adjacent connecting rods 221; finally, the non-wiring-side potting member 14 is fitted over the non-wiring-side fixing member 211, the positions of the fixing holes in the non-wiring-side fixing member 211 and the fixing holes in the wiring-side fixing member 212 are in one-to-one correspondence, the connecting rod 221 fixed to the wiring-side fixing member 212 is locked to the non-wiring-side fixing member 211 by the connecting device 222, and the fixing connection of the non-wiring-side fixing member 211 is completed, so that the entire assembly of the potting device is completed.

Of course, in the assembly, it is necessary to ensure the correspondence between the glue filling hole 12 and the glue overflowing hole 13 of the wire-side fixing member 212 and the non-wire-side fixing member 211, and to provide the flat surface portion 2130 to the end attaching portion 213, the wire-side fixing member 212 and the flat surface portion 2130 of the non-wire-side fixing member 211 are made to correspond to each other.

After the filling and sealing device is assembled, the stator can be filled with glue. Specifically, firstly, the potting device is placed on a platform, and since the end part attaching part 213 of the potting device is provided with the plane part 2130, the plane part 2130 of the end part attaching part 213 is in contact with the platform, so that the potting device can be placed stably without rotating; then, connecting the glue filling hole 12 and the glue overflowing hole 13 by using a filling and sealing tool, and sealing the connecting part of the filling and sealing tool and the glue filling hole 12 and the glue overflowing hole 13 by using sealant, so that glue leakage can not occur during glue filling; then, glue filling is carried out from glue filling holes 12 at the end parts of the two ends of the stator, and the glue filling is stopped when glue overflows from glue overflow holes 13; and finally, putting the encapsulated stator and the encapsulated device into an oven to be heated for a certain time (the heating time is related to the glue injection amount), and removing the excessive glue at the positions of the glue injection hole 12 and the glue overflow hole 13 after the glue is cured.

Of course, to solve the foregoing problems, embodiments of the present invention further provide a stator, including:

a stator winding 4 comprising a stator winding first end 41 and a stator winding second end 42;

the potting winding part 5 has a ring structure and comprises a first potting winding part 51 and a second potting winding part 52, wherein the first potting winding part 51 is fixedly connected with the first end 41 of the stator winding, and the second potting winding part 52 is fixedly connected with the second end 42 of the stator winding.

Specifically, referring to fig. 9 and 10, fig. 9 is a top view of a stator provided in an embodiment of the present invention, and fig. 10 is a D-D sectional view of the stator shown in fig. 9.

As shown in the drawings, since the potting member 1 of the potting apparatus provided by the embodiment of the present invention does not need to be detached after potting is completed, the first potting winding portion 51, which is an integral part of the non-wire-side potting member 14 after potting is surrounded by the periphery of the first end 41 of the stator winding 4 of the stator winding, and the second potting winding portion 52, which is an integral part of the wire-side potting member 15 after potting is surrounded by the periphery of the second end 42 of the stator winding 4 of the stator winding.

The stator provided by the utility model has the advantages that the encapsulation part 1 used in encapsulation can ensure that the stator is not disassembled and the size of the stator is not influenced after the encapsulation of the stator is finished, so that the stator which is subjected to glue injection can be prevented from being cleaned, the production efficiency can be improved, and the labor cost can be reduced.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the utility model, as defined in the appended claims.

Claims

1. An encapsulation device, adapted for a stator, comprising:

2. The potting apparatus of claim 1, wherein the potting component comprises:

3. The potting apparatus of claim 1, wherein the fixture comprises:

4. The potting apparatus of claim 1, wherein an arc of an offset between the potting aperture and the glue overflow aperture in a circumferential direction along the potting groove is less than 45 degrees.

5. The potting apparatus of claim 4, wherein the glue filling hole and the glue overflow hole are disposed between two adjacent connectors.

6. The potting apparatus of claim 1, wherein the number of connectors is at least 2.

7. The potting apparatus of claim 1, wherein an inner diameter of the inner ring groove wall of the potting groove is greater than a diameter of the inner circle of the stator.

8. The encapsulation device according to any one of claims 1 to 7, wherein the fixing member comprises an end attaching portion and an inner ring supporting portion which are sequentially arranged along the axial direction of the fixing member, the end attaching portion is suitable for being attached to the annular end face of the encapsulation part, and the inner ring supporting portion is suitable for being supported on the inner ring groove wall of the encapsulation groove.

9. The potting apparatus of claim 8, wherein the end abutment comprises a planar portion having a support surface perpendicular to an end surface of the fixture.

10. The potting apparatus of claim 8, wherein the end abutment portion defines a securing hole, the connector comprising:

a connecting device;

the connecting rod is arranged between the two end part attaching parts;

11. A stator, comprising: