CN109038925B - Motor and outgoing line matching structure thereof - Google Patents

Abstract

The invention provides a wire outlet matching structure, comprising: the wire passing channel is provided with a plurality of steps along the axial direction of the first mounting part and used for leading out wire routing; a second mounting part mounted on one side of the first mounting part; and the wire pressing piece is provided with a plurality of steps, is arranged between the first mounting piece and the second mounting piece and is matched with the plurality of steps of the wire passing channel. First installed part and second installed part assembly back, the line ball spare can be hidden in inside, does not have the risk of prizing open to, the cooperation of multistage step and multistage ladder can make the reliable being fixed in of lead-out wire in the wire passing channel, avoids the lead-out wire to open the welding because of the solder joint that the atress leads to welds, guarantees motor performance. And after the wire pressing piece is matched with the wire passing channel of the first mounting piece or the second mounting piece, the fixing structure of the outgoing wire can be simplified, and the overall structure is simple. The invention also provides a motor.

Description

Motor and outgoing line matching structure thereof

Technical Field

The invention relates to the technical field of motor equipment, in particular to a motor and an outlet wire matching structure thereof.

Background

At present, a lead of a motor is usually fixed by an outlet clamp made of plastic. The outlet clamp adopts a matching mode of an upper-piece and a lower-piece two-stage step concave-convex structure. When the wire clamp is assembled with the plastic package stator and the end cover, the wire clamp is stressed up and down, the effect of fixing the lead is achieved through the concave-convex structure on the wire clamp, and the phenomenon that the external stress of the lead is transmitted to the inside of the motor to cause welding spot desoldering is prevented.

However, since the clip is made of plastic, the clip is easily deformed after being heated, and the size of the clip is difficult to control. The opening of the wire clamp is frequently pried during assembly, so that the pressure of the upper concave-convex structure and the lower concave-convex structure of the wire clamp on the lead is reduced, the external stress of the lead is easily transmitted to a welding point of a motor, and the welding point is welded.

Disclosure of Invention

Therefore, the outgoing line matching structure for reliably fixing the outgoing line and the motor comprising the outgoing line matching structure are needed to solve the problem that the welding point of the outgoing line is welded due to the fact that the opening of the existing outgoing line clamp is pried.

The above purpose is realized by the following technical scheme:

an outlet fitting structure comprising:

the wire passing channel is provided with a plurality of steps along the axial direction of the first mounting part and used for leading out wire routing;

a second mounting part mounted on one side of the first mounting part; and

and the wire pressing piece is provided with a plurality of steps and is arranged between the first mounting piece and the second mounting piece and matched with the plurality of steps of the wire passing channel.

In one embodiment, at least one stage of the step of the wire passing channel is provided with a first limiting part;

at least one stage of the wire pressing piece is provided with a second limiting part on the ladder, and the first limiting part is matched with the second limiting part and used for limiting the wire pressing piece.

In one embodiment, the number of the first limiting parts and the second limiting parts is multiple, and the first limiting parts and the second limiting parts are distributed along the radial direction and/or the circumferential direction;

and/or the first limiting part and the second limiting part are matched structures of limiting bulges and limiting holes;

and/or the first limiting part and the second limiting part are in interference fit.

In one embodiment, a surface of the wire pressing piece, which faces away from the multistage ladder, is provided with a third limiting part, the second mounting piece is provided with a fourth limiting part, and the third limiting part is matched with the fourth limiting part.

In one embodiment, the number of the third limiting parts and the fourth limiting parts is multiple, and the third limiting parts and the fourth limiting parts are distributed along the radial direction and/or the circumferential direction;

and/or the third limiting part and the fourth limiting part are matched structures of limiting bulges and limiting holes;

and/or the third limiting part and the fourth limiting part are in interference fit.

In one embodiment, the multistage steps of the crimping pieces are uniform in size in the circumferential direction in the radial direction of the first mounting piece;

alternatively, the multistage steps of the crimping member decrease in size in the circumferential direction from inside to outside.

In one embodiment, the wire pressing piece comprises a first wire pressing section and a second wire pressing section which are connected, the first wire pressing section is located on the radial inner side of the second wire pressing section, and at least one circumferential side wall of the first wire pressing section protrudes out of a circumferential side wall of the second wire pressing section along the circumferential direction.

In one embodiment, the sizes of the multistage steps of the wire passing channel in the circumferential direction are consistent along the radial direction of the first mounting piece;

or, the size of the multistage step of the wire passage in the circumferential direction is reduced from inside to outside.

In one embodiment, the wire passing channel comprises a first wire passing part and a second wire passing part which are communicated with each other, the first wire passing part is positioned on the radial inner side of the second wire passing part, and the circumferential dimension of the first wire passing part is larger than that of the second wire passing part.

In one embodiment, one end of the wire pressing piece facing the outer periphery side of the first mounting piece is flush with the outer periphery of the first mounting piece or the second mounting piece;

alternatively, one end of the wire pressing member facing the outer peripheral side of the first mounting element is retracted with respect to the outer peripheral surface of the first mounting element or the second mounting element.

In one embodiment, the first mounting member is a stator and the second mounting member is an end cap;

or, the first installation part is an end cover, and the second installation part is a stator.

A motor comprises a rotor and an outgoing line matching structure according to any technical characteristic;

the rotor is mounted in a first mounting of the outlet fitting structure.

After the technical scheme is adopted, the invention at least has the following technical effects:

according to the motor and the outgoing line matching structure thereof, the outgoing line is led out from the line passing channel, and after the line pressing piece is arranged on the line passing channel, the multi-stage steps of the line pressing piece can be matched with the multi-stage steps of the line passing channel to clamp the outgoing line, so that the outgoing line is guaranteed to be fixed reliably. Moreover, after the first mounting part and the second mounting part are assembled, the wire pressing part can be hidden inside. The problem that the welding point of the outgoing line is welded due to the fact that the opening of the existing outgoing line clamp is pried is effectively solved. Like this, the wire pressing piece can not expose the outer peripheral face of first installed part, does not have the risk of prizing, moreover, the cooperation of multistage step and multistage ladder can make the reliable being fixed in of lead-out wire in the wire passing channel, avoids the lead-out wire to open the welding because of the solder joint that the atress leads to welds, guarantees motor performance. And after the wire pressing piece is matched with the wire passing channel of the first mounting piece or the second mounting piece, the fixing structure of the outgoing wire can be simplified, and the overall structure is simple.

Drawings

Fig. 1 is a schematic cross-sectional view of an outgoing line matching structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a perspective view of a first mounting member in the outlet fitting structure of fig. 1;

FIG. 4 is a perspective view of the wire crimping member of the wire outlet fitting structure shown in FIG. 1, viewed from one direction;

fig. 5 is a perspective view of the wire pressing member in the wire outlet fitting structure shown in fig. 1, viewed from another direction.

Wherein:

100-a wire-out matching structure;

110-a first mount;

120-a second mount; 121-a fourth limiting part;

130-a wire-passing channel; 131-a second limiting part; 132-a first wire-passing portion; 133-a second crossover section;

140-a crimping element; 141-a first limiting part; 142-a third limiting part; 143-a first press line segment; 144-second press line segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following describes the motor and the wire-out matching structure thereof in further detail through embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 5, the present invention provides an outlet wire fitting structure 100, wherein the outlet wire fitting structure 100 is used for fixing an outlet wire of a motor. Of course, in other embodiments of the present invention, the outlet matching structure 100 may also be used for fixing outlet wires of other products. The outgoing line matching structure 100 is hidden in the motor, so that the risk of prying the outgoing line matching structure 100 is reduced, the outgoing line is reliably fixed in the motor, the welding spot welding failure caused by external force of the outgoing line is avoided, and the service performance is ensured. Moreover, the outlet matching structure 100 of the present invention has a simple overall structure and is easy to implement.

In one embodiment, the wire-outlet fitting structure 100 includes a first mounting element 110, a second mounting element 120, and a wire pressing element 140. The second mounting member 120 is mounted to one side of the first mounting member 110. The first mounting member 110 is provided with a wire passage 130, and the wire passage 130 has multiple steps along the axial direction of the first mounting member 110 for leading out wires. The wire pressing member 140 has a plurality of steps, is disposed between the first mounting member 110 and the second mounting member 120, and is engaged with the steps of the wire passage 130.

In one embodiment of the present invention, the first mounting member 110 is a stator and the second mounting member 120 is an end cap. In this embodiment, the wire passage 130 is opened on the first mounting member 110, the leading-out wire of the first mounting member 110 is led out from the wire passage 130 of the first mounting member 110, and the wire pressing member 140 is disposed in the wire passage 130 of the first mounting member 110 and cooperates with the first mounting member 110 to clamp the leading-out wire. The second mounting member 120 is mounted to the first mounting member 110 and compresses the crimping members 140. Specifically, after the lead wire is fixed, the upper surface of the wire pressing member 140 contacts the second mounting member 120, and the lower surface of the wire pressing member 140 contacts the lead wire, so that the lead wire is pressed in the wire passing channel 130 of the first mounting member 110, and the pre-tightening force of the wire pressing member 140 is increased. Moreover, the second mounting part 120 can reliably compress the wire pressing part 140, and the wire pressing part 140 has no risk of being pried open, so that the wire pressing part 140 can compress the outgoing wire, the outgoing wire is reliably fixed in the wire passing channel 130, the welding spot welding caused by stress on the outgoing wire is avoided, and the performance of the motor is ensured.

It is understood that in another embodiment of the present invention, the first mounting member 110 may be an end cap and the second mounting member 120 may be a stator. That is, the wire passage may be disposed on the stator or the end cap, and cooperates with the wire pressing member 140 to fix the outgoing wire. The wire passage 130 may also be opened on the second mounting member 120, the lead-out wire is led out from the wire passage 130 of the second mounting member 120, and the wire pressing member 140 is disposed in the wire passage 130 of the second mounting member 120 and cooperates with the second mounting member 120 to clamp the lead-out wire. Moreover, after the second mounting part 120 is assembled with the first mounting part 110, the wire pressing of the wire pressing part 140 can be further ensured to be reliable, and the prying risk is reduced. Of course, in other embodiments, the first and second mounting elements 110 and 120 may be structures on other products.

Also, the wire passage 130 has a plurality of steps, and the wire pressing member 140 has a plurality of steps, which can be closely fitted with the plurality of steps, so that the outgoing wire is sandwiched between the plurality of steps of the wire passage 130 and the plurality of steps of the wire pressing member 140. Like this, the lead-out wire can be reliably fixed between line ball 140 and first installed part 110, and increase line ball 140's pretightning force avoids the lead-out wire drunkenness under the exogenic action, and then avoids the lead-out wire to open the welding problem because of the solder joint that exogenic action leads to, guarantees the performance of motor. Optionally, the protruding parts of the multi-stage steps and the multi-stage steps are in smooth transition, so that the lead-out wires are prevented from being damaged.

The multistage step extends along the axial direction and to the outer peripheral side of the first mounting member 110, and after the multistage step is matched with the multistage step, the multistage step of the wire passing channel 130 can be abutted against the multistage step of the wire pressing member 140 to limit the position of the wire pressing member 140, so that the wire pressing member 140 is prevented from being separated from the wire passing channel 130 after being assembled. Optionally, the wire passage 130 opens in the radial direction in the first mounting member 110. Of course, in other embodiments, the wire passage 130 may also be opened in a direction deviating from the radial direction.

It is understood that multiple levels refers to two or more levels, and multiple means two or more levels. In this embodiment, the multistage step is tertiary, and multistage ladder also is tertiary, can increase the clamp force of pressure line piece 140 to the lead-out wire through the cooperation of tertiary step and tertiary ladder, guarantees the fixed effect of lead-out wire. Of course, in other embodiments, the multi-step steps and the multi-step ladder may be four, five or even more.

It should be noted that the wire pressing member 140 is located between the first mounting member 110 and the second mounting member 120, and is matched with the wire passage 130 on the first mounting member 110. After the outgoing line is fixed in this way, the wire pressing member 140 does not expose the outer peripheral surface of the first mounting member 110, that is, the wire pressing member 140 can be hidden in the motor and closely matched with the second mounting member 120 and the motor, and there is no risk of prying. Meanwhile, the motor can be ensured to be neat in appearance. In addition, the wire pressing member 140 and the wire passing channel 130 on the first mounting member 110 are matched together to clamp the outgoing wire, and compared with the existing wire clamp adopting an upper and lower clamping and fixing manner, the outgoing wire clamp eliminates a lower piece, so that the structural design of the whole machine is simpler, the realization is easy, and the size guarantee is easier.

In an embodiment, at least one step of the wire passage 130 has a first position-limiting portion 131, at least one step of the wire pressing member 140 has a second position-limiting portion 141, and the first position-limiting portion 131 and the second position-limiting portion 141 are matched for limiting the wire pressing member 140. That is, the wire pressing member 140 is installed in the wire passage 130, and the first position-limiting portion 131 is matched with the second position-limiting portion 141. Therefore, the wire pressing piece 140 can be reliably fixed in the wire passing channel 130, the position of the wire pressing piece 140 is prevented from moving, and the outgoing wire is reliably fixed.

Optionally, the first position-limiting portion 131 and the second position-limiting portion 141 are a matching structure of a position-limiting protrusion and a position-limiting hole. The first position-limiting portion 131 may be a position-limiting protrusion, the second position-limiting portion 141 may be a position-limiting hole, or the first position-limiting portion 131 may be a position-limiting hole, and the second position-limiting portion 141 may be a position-limiting protrusion. In this embodiment, the first position-limiting portion 131 is a position-limiting hole, the second position-limiting portion 141 is a position-limiting protrusion, and the position-limiting protrusion is a position-limiting post. Of course, in other embodiments, the first limiting portion 131 and the second limiting portion 141 may be a structure capable of limiting the position of the wire pressing member 140, such as a matching structure of a hook and a slot.

It can be understood that the number of the first limiting portion 131 and the second limiting portion 141 is not limited in principle, and may be one or more, as long as the wire pressing member 140 can be limited. Optionally, the number of the first limiting portion 131 and the second limiting portion 141 is multiple, and the first limiting portion and the second limiting portion are distributed along the radial direction and/or the circumferential direction. The matching of the first limiting parts 131 and the second limiting parts 141 can further ensure that the wire pressing member 140 is reliably fixed in the wire pressing channel. In this embodiment, the number of the first position-limiting portions 131 and the second position-limiting portions 141 is two, the two first position-limiting portions 131 are distributed along the circumferential direction, and the positions of the two second position-limiting portions 141 are consistent with the positions of the two first position-limiting portions 131.

Optionally, the first position-limiting portion 131 and the second position-limiting portion 141 are in interference fit. Therefore, the wire pressing piece 140 can be reliably fixed in the wire passing channel 130, and the wire pressing piece 140 is prevented from moving, so that the outgoing wire is reliably fixed.

In an embodiment, a surface of the wire pressing member 140 facing away from the multi-step ladder has a third limiting portion 142, the second mounting member 120 has a fourth limiting portion 121 thereon, and the third limiting portion 142 is matched with the fourth limiting portion 121. It can be understood that, in this embodiment, when the wire passage 130 is located on the first mounting element 110, i.e. the stator, the fourth position-limiting part 121 is located on the second mounting element 120, i.e. the end cover, and is matched with the third position-limiting part 142 on the surface of the wire pressing element 140, which is in contact with the second mounting element 120. In another embodiment, when the wire passage 130 is located on the end cap, the fourth position-limiting part 121 is located on the stator and cooperates with the third position-limiting part 142 on the surface of the wire pressing member 140 contacting the first mounting member 110.

Optionally, the third limiting portion 142 and the fourth limiting portion 121 are a matching structure of a limiting protrusion and a limiting hole. The third position-limiting portion 142 may be a position-limiting protrusion, the fourth position-limiting portion 121 may be a position-limiting hole, or the third position-limiting portion 142 may be a position-limiting hole, and the fourth position-limiting portion 121 may be a position-limiting protrusion. In this embodiment, the wire passage 130 is located on the first mounting member 110, the multiple steps are located on the lower surface of the wire pressing member 140, and the third limiting portion 142 is located on the upper surface of the wire pressing member 140. The third position-limiting portion 142 is a position-limiting protrusion, and the fourth position-limiting portion 121 is a position-limiting hole. Of course, in other embodiments, the third limiting portion 142 and the fourth limiting portion 121 may be a structure capable of limiting the position of the wire pressing member 140, such as a matching structure of a hook and a slot.

It can be understood that the number of the first limiting portion 131 and the second limiting portion 141 is not limited in principle, and may be one or more, as long as the wire pressing member 140 can be limited. Optionally, the number of the third limiting portion 142 and the fourth limiting portion 121 is multiple, and the third limiting portion and the fourth limiting portion are distributed along the radial direction and/or the circumferential direction. In this embodiment, the number of the third position-limiting portions 142 and the fourth position-limiting portions 121 is one.

Optionally, the third position-limiting portion 142 and the fourth position-limiting portion 121 are in interference fit. Therefore, the wire pressing piece 140 can be reliably fixed between the first mounting piece 110 and the second mounting piece 120, and the wire pressing piece 140 is prevented from moving, so that the outgoing line is fixed reliably.

In an embodiment, the size of the multistage step of the wire passage 130 in the circumferential direction decreases from the inside to the outside in the radial direction of the first mounting member 110. That is, the openings of the wire passage 130 have different widths at the steps, and the opening widths are gradually reduced from the inside to the outside. Thus, after the wire pressing member 140 is installed in the wire passage 130, the step of the wire pressing member 140 abuts against the inner wall of the step of the wire passage 130 to prevent the wire pressing member 140 from coming out of the wire passage 130, thereby ensuring reliable fixation. It is understood that the opening width of the wire passage 130 may gradually change with each step, or may change with every other step or steps. Furthermore, the different opening widths of the wire passage 130 can be used with corresponding wire pressing members 140, which will be described in detail later.

In other embodiments, the multistage steps of the wire passage 130 are uniform in size in the circumferential direction along the radial direction of the first mount 110. That is, the openings of the wire passage 130 are uniform in width at each step. Thus, the wire pressing member 140 can be accurately clamped in the wire passage 130 after being installed in the wire passage 130.

In an embodiment, in the radial direction of the first mounting part 110, the multistage steps of the wire pressing member 140 decrease in size from inside to outside in the circumferential direction. That is, the circumferential dimension of the wire pressing member 140 is different at each step, and is gradually reduced from the inside to the outside. Thus, after the wire pressing member 140 is installed in the wire passage 130, the step of the wire pressing member 140 abuts against the inner wall of the step of the wire passage 130 to prevent the wire pressing member 140 from coming out of the wire passage 130, thereby ensuring reliable fixation. It is understood that the circumferential dimension of the wire pressing member 140 may be gradually changed with each step, or may be changed every other step or steps.

In other embodiments, the multistage steps of the wire pressing member 140 are uniform in size in the circumferential direction in the radial direction of the first mounting member 110. That is, the circumferential dimension of the wire pressing member 140 is uniform at each step. Thus, the wire pressing member 140 can be accurately clamped in the wire passage 130 after being installed in the wire passage 130.

In an embodiment, the wire pressing member 140 includes a first wire pressing section 143 and a second wire pressing section 144 connected to each other, the first wire pressing section 143 is located radially inside the second wire pressing section 144, and at least one circumferential sidewall of the first wire pressing section 143 protrudes from a circumferential sidewall of the second wire pressing section 144 in a circumferential direction. Thus, the protruding portion of the first wire pressing section 143 is caught on the inner wall of the wire passage 130.

In an embodiment, the wire passage 130 includes a first wire passing portion 132 and a second wire passing portion 133 that are communicated with each other, the first wire passing portion 132 is located radially inside the second wire passing portion 133, and a circumferential dimension of the first wire passing portion 132 is greater than a circumferential dimension of the second wire passing portion 133. Therefore, the wire pressing piece 140 is limited conveniently, and the wire pressing piece 140 is guaranteed to be fixed reliably.

In the present embodiment, both circumferential side walls of the first pressure line segment 143 protrude from the circumferential side walls of the second pressure line segment 144 in the axial direction. The first wire crossover portion 132 is located within the first mounting element 110 and flush with the surface of the first mounting element 110, and the second wire crossover portion 133 extends outward of the first mounting element 110 and through the first mounting element 110. After the wire pressing member 140 is installed in the wire passage 130, the first wire pressing section 143 is located in the first wire passing part 132, a protruding portion of the first wire pressing section 143 abuts against an inner wall of the first wire passing part 132, and the second wire pressing section 144 is located in the second wire passing part 133.

In an embodiment, an end of the wire pressing member 140 facing the outer circumferential side of the first mounting element 110 is flush with the outer circumferential surface of the first mounting element 110 or the second mounting element 120, or an end of the wire pressing member 140 facing the outer circumferential side of the first mounting element 110 is retracted with respect to the outer circumferential surface of the first mounting element 110 or the second mounting element 120. Therefore, the wire pressing piece 140 can be tightly matched with the wire passing channel 130, and the outgoing wire can be reliably fixed. Furthermore, the wire pressing member 140 does not protrude from the outer peripheral surface of the first mounting member 110, and there is no risk of prying. Meanwhile, the wire pressing piece 140 can be hidden in the motor, and the appearance of the motor is guaranteed.

In one embodiment, the first pressing line segment 143 and the second pressing line segment 144 are an integral structure. This ensures that the first wire pressing section 143 is reliably connected to the second wire pressing section 144, thereby improving the reliability of the wire pressing member 140 and reducing the number of assembling processes. In one embodiment, the wire passage 130 is integrally formed with the first or second mounting member 110, 120. Therefore, the assembly process can be reduced, the number of parts can be reduced, and the cost can be saved.

An embodiment of the present invention further provides a motor, which includes a rotor and the outgoing line matching structure 100 in any of the above embodiments. The rotor is mounted in the first mount 110, i.e., the stator, of the outlet fitting structure 100. After the motor adopts the outgoing line matching structure 100, the reliable fixation of the outgoing line can be ensured, the welding spot welding of the outgoing line caused by external force is avoided, and the service performance of the motor is ensured. Moreover, the outgoing line matching mechanism is safely hidden in the motor, the risk of prying is avoided, and meanwhile the appearance of the motor can be guaranteed.

The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An outgoing line fitting structure, comprising:

the first mounting part (110) is provided with a wire passing channel (130), and the wire passing channel (130) is provided with a plurality of steps along the axial direction of the first mounting part (110) and used for leading out wire routing;

a second mounting part (120) mounted on one side of the first mounting part (110); and

the wire pressing piece (140) is provided with multiple steps and is arranged between the first mounting piece (110) and the second mounting piece (120) and matched with the multiple steps of the wire passing channel (130), so that the multiple steps of the wire passing channel (130) are abutted with the multiple steps of the wire pressing piece (140) to clamp the outgoing wire; at least one stage of the step of the wire passing channel (130) is provided with a first limiting part (131); at least one stage of the ladder of the wire pressing piece (140) is provided with a second limiting part (141), and the first limiting part (131) is matched with the second limiting part (141) and used for limiting the wire pressing piece (140);

the surface of the wire pressing piece (140) departing from the multistage ladder is provided with a third limiting part (142), the second mounting piece (120) is provided with a fourth limiting part (121), and the third limiting part (142) is matched with the fourth limiting part (121).

2. The line outgoing matching structure according to claim 1, wherein the first limiting portion (131) and the second limiting portion (141) are plural in number and distributed in a radial direction and/or a circumferential direction;

and/or the first limiting part (131) and the second limiting part (141) are matched structures of limiting bulges and limiting holes;

and/or the first limiting part (131) and the second limiting part (141) are in interference fit.

3. The line outgoing matching structure according to claim 1, wherein the third limiting portion (142) and the fourth limiting portion (121) are plural in number and distributed in a radial direction and/or a circumferential direction;

and/or the third limiting part (142) and the fourth limiting part (121) are matched structures of limiting bulges and limiting holes;

and/or the third limiting part (142) and the fourth limiting part (121) are in interference fit.

4. The outlet fitting structure according to any one of claims 1 to 3, wherein the multistage steps of the wire pressing member (140) are uniform in size in the circumferential direction in the radial direction of the first mounting member (110);

alternatively, the multistage steps of the crimping member (140) decrease in size in the circumferential direction from inside to outside.

5. The line outgoing matching structure according to claim 4, wherein the line pressing piece (140) comprises a first line pressing section (143) and a second line pressing section (144) which are connected, the first line pressing section (143) is located on the radial inner side of the second line pressing section (144), and at least one circumferential side wall of the first line pressing section (143) protrudes out of the circumferential side wall of the second line pressing section (144) in the circumferential direction.

6. The outlet fitting structure according to any one of claims 1 to 3, wherein the multistage steps of the wire passage (130) are uniform in size in the circumferential direction in the radial direction of the first mounting piece (110);

or, the size of the multistage step of the wire passage (130) in the circumferential direction is reduced from inside to outside.

7. The wire outgoing matching structure according to claim 6, wherein the wire passing channel (130) comprises a first wire passing part (132) and a second wire passing part (133) which are communicated with each other, the first wire passing part (132) is located on the radial inner side of the second wire passing part (133), and the circumferential dimension of the first wire passing part (132) is larger than that of the second wire passing part (133).

8. The outlet fitting structure according to any one of claims 1 to 3, wherein an end of the wire pressing member (140) facing an outer peripheral side of the first mounting member (110) is flush with an outer peripheral surface of the first mounting member (110) or the second mounting member (120);

alternatively, one end of the wire pressing member (140) facing the outer peripheral side of the first mounting element (110) is retracted with respect to the outer peripheral surface of the first mounting element (110) or the second mounting element (120).

9. The outlet fitting structure according to any one of claims 1 to 3, wherein the first mount (110) is a stator and the second mount (120) is an end cap;

alternatively, the first mount (110) is an end cap and the second mount (120) is a stator.

10. An electrical machine comprising a rotor and an outlet fitting structure (100) according to any of claims 1 to 9;

the rotor is mounted in a first mount (110) of the outlet fitting structure (100).

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