A wiring device, a stator, an electric machine and a method of producing a stator

Abstract

The application provides a wiring device, a stator, a motor and a production method of the stator. The wiring device comprises a wiring terminal and a terminal seat. The terminal seat is provided with a slot. The wiring terminal is inserted into the terminal seat. The wiring terminal comprises a piercing part and a connecting part. The piercing part comprises at least two layers of metal sheets. The two sides of the first layer of metal sheets are provided with first clamping parts. The two sides of the second layer of metal sheets are provided with second clamping parts. The second layer of metal sheets is provided with a deformation groove between the two second clamping parts. The slot is provided with a limiting groove opposite to the second clamping parts, so as to solve the technical problems of low connection efficiency and poor fixation between the wiring terminal and the terminal seat in the prior art.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric machines, and particularly relates to a wiring device, a stator, an electric machine and a production method of the stator. BACKGROUND

[0002] The stator winding of the existing electric machine is generally connected with an external power line through a wiring terminal. The stator winding is electrically connected with the wiring terminal by being clamped into the wiring terminal, and the external power line is electrically connected with the wiring terminal, so as to realize the electrical connection between the stator winding and the external power source. Meanwhile, a segment seat is arranged on the insulating framework of the stator, and the wiring terminal is fixed on the terminal seat to realize the fixation of the wiring terminal. The existing wiring terminal is inserted into the terminal seat in a manner of interference, which makes the process of inserting the wiring terminal into the terminal seat difficult and low in production efficiency. How to improve the fixation efficiency between the wiring terminal and the terminal seat is a technical scheme that needs to be solved at present. SUMMARY

[0003] The present application provides a wiring device, a stator, an electric machine and a production method of the stator, which can solve the technical problems of low connection efficiency and poor fixation between the wiring terminal and the terminal seat in the prior art.

[0004] The first aspect of the present application provides a wiring device, which comprises a wiring terminal and a terminal seat. The terminal seat is provided with a slot, and the wiring terminal is inserted into the terminal seat. The wiring terminal comprises a piercing part and a connecting part. The piercing part comprises at least two layers of metal sheets. The two sides of the first layer of metal sheets are provided with first clamping parts, and the two sides of the second layer of metal sheets are provided with second clamping parts. The second layer of metal sheets is provided with a deformation groove, and the deformation groove is located between the two second clamping parts. The slot is provided with a limiting groove opposite to the second clamping part.

[0005] In some embodiments, the piercing part is provided with a piercing segment extending along a first direction, and the piercing segment is used for piercing and fixing a wire. The terminal seat is provided with a limiting segment extending along the first direction and corresponding to the piercing segment. The minimum width of the limiting segment is greater than the outer diameter of the wire.

[0006] In some embodiments, the piercing part further comprises a guide segment. The first end of the guide segment is a clamping opening of the wire, the second end of the guide segment communicates with the piercing segment, and the direction of the first end of the guide segment is a second direction. The second direction is not parallel to the first direction.

[0007] In some embodiments, the wiring device comprises an insulating cover, and the insulating cover is sleeved on the terminal seat. The insulating cover is provided with a clearance groove extending along the first direction, and the clearance groove is opposite to the piercing segment.

[0008] In some embodiments, the insulating cover is provided with a socket, and the connecting portion is inserted into the socket and extends out of the insulating cover.

[0009] In some embodiments, the wiring terminal is formed by bending a single metal sheet, the connecting portion and the first layer of metal sheet are the same metal sheet, the connecting portion is connected to the first end of the first layer of metal sheet, the first end of the second layer of metal sheet is connected to the second end of the first layer of metal sheet through a first connecting segment, the second end of the second layer of metal sheet is not connected to the first layer of metal sheet or the connecting portion, and the piercing segment and the guiding segment pass through the first layer of metal sheet and the second layer of metal sheet.

[0010] In some embodiments, the wiring device further comprises a third layer of metal sheet between the first layer of metal sheet and the second layer of metal sheet, the third layer of metal sheet is connected to the second end of the second layer of metal sheet through a third connecting segment via a second connecting segment, and the piercing segment and the guiding segment further pass through the third layer of metal sheet.

[0011] In some embodiments, the maximum distance between the two first clamping portions is L1, the maximum distance between the opposite side edges of the slot and the two sides of the first layer of metal sheet is L2, and 0.9L1

[0012] In some embodiments, the bottom of the slot is provided with a first positioning portion, and the wiring terminal is provided with a second positioning portion matched with the first positioning portion.

[0013] In the second aspect, the application further provides a stator comprising the wiring device and an upper insulating framework, and the terminal seat is arranged on the upper insulating framework.

[0014] In the third aspect, the application further provides an electric machine comprising the stator.

[0015] In the fourth aspect, the application provides a production method of the stator, which comprises the following steps: inserting the wiring terminal into the slot of the terminal seat, and clamping the wire into the piercing segment of the wiring terminal.

[0016] The application sets first and second clamping parts on the piercing part of the terminal, the first clamping part is set on the first layer of metal sheet, and the second clamping part is set on the second layer of metal sheet, wherein a deformation groove is set between the second clamping parts, when the piercing part is inserted into the terminal seat, the second clamping part determines whether the terminal is installed in place, and the first clamping part ensures that the terminal is firmly fixed in the terminal seat, thereby improving the fixing firmness of the terminal in the terminal seat. Since only the first and second clamping parts and the inner wall of the slot are extruded, the difficulty of inserting the terminal into the terminal seat is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. The drawings in the following description are only exemplary, and other embodiments can be derived from the provided drawings without creative labor for those skilled in the art.

[0018] Figure 1 is a perspective view of the terminal of the embodiment of the present application;

[0019] Figure 2 is a side view of the terminal of the embodiment of the present application;

[0020] Figure 3 is a schematic view of the insulating cover of the embodiment of the present application;

[0021] Figure 4 is a schematic view of the upper insulating framework of the embodiment of the present application;

[0022] Figure 5 is a schematic view of the lower insulating framework of the embodiment of the present application; Figure 4 is an enlarged view of A in the above;

[0023] Figure 6 is a schematic view of the combination of the upper insulating framework, the lower insulating framework and the iron core of the embodiment of the present application;

[0024] Figure 7 is a radial schematic view of the above; Figure 6

[0025] Figure 8 is an enlarged view of B in the above; Figure 7

[0026] Figure 9 is a schematic view of the lower insulating framework of the embodiment of the present application;

[0027] Figure 10 ​​is a schematic view of the iron core, the upper insulating framework, the lower insulating framework, the wiring terminal and the insulating cover assembled together in an embodiment of the present application;

[0028] Figure 11 is a schematic view of the iron core, the upper insulating framework, the lower insulating framework, the wiring terminal and the insulating cover assembled together and then injection molded in an embodiment of the present application;

[0029] Figure 12 is a schematic view of the end cover in an embodiment of the present application;

[0030] Figure 13 is a schematic view of the end cover in an embodiment of the present application; Figure 11 is a radial sectional view of the end cover;

[0031] Figure 14 is a radial sectional view of the end cover; Figure 13 is an enlarged view of C in the end cover;

[0032] The reference signs are as follows:

[0033] 1, wiring terminal; 101, piercing part; 102, connecting part; 1011, first layer of metal sheet; 1012, second layer of metal sheet; 1013, third layer of metal sheet; 1021, first clamping part; 1022, second clamping part; 103, piercing section; 104, guiding section; 1014, deformation groove; 2, terminal seat; 201, insertion slot; 2011, limiting slot; 202, limiting section; 203, window; 3, insulating cover; 301, accommodation slot; 302, insertion hole; 401, first positioning part; 402, second positioning part; 5, end cover; 601, upper insulating framework; 602, lower insulating framework. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or positional relationship are generally based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0036] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0037] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0038] For reference Figures 1-14 As shown in the drawings, the wiring device provided by the present application comprises a wiring terminal 1 and a terminal seat 2, the terminal seat 2 is provided with a slot 201, the wiring terminal 1 is inserted into the terminal seat 2, the wiring terminal 1 comprises a piercing part 101 and a connecting part 102, the piercing part 101 comprises at least two layers of metal sheets, the two sides of the first layer of metal sheets 1011 are provided with first clamping parts 1021, the two sides of the second layer of metal sheets 1012 are provided with second clamping parts 1022, the second layer of metal sheets 1012 is provided with a deformation groove 1014, the deformation groove 1014 is located between the two second clamping parts 1022; the slot 201 is provided with a limiting groove 2011 opposite to the second clamping part 1022.

[0039] By setting the deformation groove 1014 and the limiting groove 2011, when the terminal 1 is inserted into the terminal seat 2, the second clamping part 1022 extrudes the deformation groove 1014 to avoid the extrusion force between the second clamping part 1022 and the inner wall surface of the insertion groove 201 being too large to be smoothly inserted, and the second clamping part 1022 cooperates with the limiting groove 2011 to enable the terminal 1 to be located at a predetermined position in the terminal seat 2 and be fixed. The first clamping part 1021 is extruded by the inner wall surface of the insertion groove 201, thereby enabling the terminal 1 and the terminal seat 2 to be more firmly connected together and not to shake; when the second clamping part 1022 enters the limiting groove 2011, the terminal 1 is inserted into position. Since only the first clamping part 1021 and the second clamping part 1022 of the terminal 1 are extruded by the inner wall surface of the insertion groove 201, the difficulty of inserting the terminal 1 into the terminal seat 2 is reduced, and the connection efficiency between the terminal 1 and the terminal seat 2 is improved.

[0040] Preferably, the maximum distance between the two first clamping parts 1021 is L1, the maximum distance between the two sides of the insertion groove 201 opposite to the two sides of the first layer of metal sheets 1011 is L2, and 0.9L1

[0041] By 0.9L1

[0042] Further, the first clamping part 1021 is a right triangle, and the inclined surface of the first clamping part 1021 faces the bottom of the insertion groove 201, so that the first clamping part 1021 is facilitated to enter the insertion groove 201.

[0043] Preferably, as shown in Figure 8 The piercing part 101 is provided with a piercing segment 103 extending along the first direction, and the piercing segment 103 is used for piercing and fixing the wire; the terminal seat 2 is provided with a limiting segment 202 extending along the first direction and corresponding to the piercing segment 103, and the minimum width of the limiting segment 202 is greater than the outer diameter of the wire.

[0044] The terminal 1 in the present application is first inserted into the insertion groove 201 of the terminal seat 2, and then the wire is placed in the piercing segment 103, and the limiting segment 202 is arranged on the terminal; as Figure 8As shown, on one hand, since the limiting section 202 is opposite to the piercing section 103, the limiting section 202 limits the wire, so that the wire can be uniformly stressed on both sides of the piercing section 103 when being put into the piercing section 103, avoiding that the wire is damaged due to the excessive stress on one side of the piercing section 103, reducing the structural strength of the wire; on the other hand, after the wire is fixed in the piercing section 103, the wire is blocked by the limiting section 202 when shaking, so that a small angle is not formed between the wire and the piercing section 101, the angle between the wire near the piercing section 101 and the wire inside the piercing section 101 is large, that is, the wire outside the piercing section 101 is relatively small, which avoids that the piercing section 103 forms a large shearing force on the wire, and is beneficial to improving the strength of the wire in the piercing section 103.

[0045] Preferably, as shown in Figures 1-2 As shown, the piercing section 101 further comprises a guide section 104, a first end of the guide section 104 is a clamping opening of the wire, a second end of the guide section 104 is communicated with the piercing section 103, and a direction of the first end of the guide section 104 is a second direction, the second direction is not parallel to the first direction.

[0046] By arranging the guide section 104, one end of the guide section 104 is connected with the piercing section 103, and the other end is a clamping opening, the direction of the opening of the wire end is not parallel to the first direction; on one hand, the wire enters the piercing section 103 through the guide section 104 more conveniently and quickly; on the other hand, the wire needs to pass through the guide section 104 when being separated from the piercing section 103, the opening of the guide section 104 is directed in a direction different from the extension direction of the piercing section 103, which has a certain blocking effect on the sliding of the wire, and is beneficial to the stable connection of the wire.

[0047] Preferably, as shown in Figure 3 , Figure 14 As shown, the wiring device comprises an insulating cover 3, the insulating cover 3 is sleeved on the terminal seat 2; the insulating cover 3 is provided with a gap slot 301 extending along the first direction, and the gap slot 301 is opposite to the piercing section 103.

[0048] By setting the insulating cover 3, on the one hand, the insulating cover 3 covers the terminal seat 2 to form a protective effect on the pierced wire; on the other hand, the accommodation groove 301 on the insulating cover 3 extends along the first direction, and since the opening of the guide section 104 faces a direction different from the first direction, this makes the wire even in the piercing section 103 shake, and under the joint limitation of the guide section 104 and the limiting section 202, the wire is not subjected to a force extending along the first direction, so that the wire exerts a force on the insulating cover 3 not along the first direction, so that the wire shaking has less effect on the insulating cover 3, avoiding the insulating cover 3 from falling off under the action of the wire, and ultimately facilitating the stable connection of the wire on the terminal 1.

[0049] The insulating cover 3 can improve the good insulation protection of the terminal 1, improve the reliability and stability of the use of the terminal 1.

[0050] Further, the terminal is provided with a window 203, and when the terminal 1 is inserted, the insertion of the terminal 1 can also be checked through the window 203.

[0051] Preferably, as shown in Figure 3 , Figure 7 and Figure 8 , the insulating cover 3 is provided with a insertion hole 302, and the connecting part 102 is inserted into the insertion hole 302 and passes out of the insulating cover 3.

[0052] By setting the insertion hole 302, the connecting part 102 passes through the insulating cover 3, which is convenient for the connection of the connecting part 102 and the external cable.

[0053] Preferably, as shown in Figure 1 , Figure 2 and Figure 14 , the terminal 1 is formed by bending a single metal sheet, the connecting part 102 and the first layer metal sheet 1011 are the same metal plate surface, and the connecting part 102 is connected to the first end of the first layer metal sheet 1011; the first end of the second layer metal sheet 1012 is connected to the second end of the first layer metal sheet 1011 through a first connecting section, and the second end of the second layer metal sheet 1012 is not connected to the first layer metal sheet 1011 nor to the connecting part 102; the piercing section 103 and the guide section 104 pass through the first layer metal sheet 1011 and the second layer metal sheet 1012.

[0054] The terminal 1 is formed by bending a single metal sheet, which is very ingenious. As shown in Figure 1 , Figure 2As shown, since the second layer of metal sheet 1012 is not connected with the first layer of metal sheet 1011, nor with the connecting part 102, the second layer of metal sheet 1012 is in a suspended state, one end of the second layer of metal sheet 1012 is suspended, so that when the terminal 1 is inserted into the slot 201, the second layer of metal sheet 1012 will be deformed as a whole; and since the second layer of metal sheet 1012 is provided with the second clamping part 1022, and the deformation groove 1014 is arranged between the second clamping parts 1022, when the second clamping part 1022 is pressed by the inner wall of the slot 201, the second clamping part 1022 will not only be deformed due to the deformation groove 1014, but also be deformed due to the deformation of the second layer of metal sheet 1012 as a whole, so that the second clamping part 1022 can more easily enter the slot 201, which is beneficial to improve the efficiency of inserting the terminal 1 into the slot 201.

[0055] The piercing section 103 and the guiding section 104 pass through the first layer of metal sheet 1011 and the second layer of metal sheet 1012, when the wire is clamped, the wire is pierced and clamped by the first layer of metal sheet 1011 and the second layer of metal sheet 1012 at the same time, so that the wire has four points of electrical connection with the terminal 1 at the same time, so that the wire will not be disconnected due to single or several (not more than three) points of electrical connection, which improves the stability of the electrical connection between the wire and the terminal 1.

[0056] Preferably, as shown in Figure 3 , Figure 7 and Figure 8 , the terminal device further comprises a third layer of metal sheet 1013, the third layer of metal sheet 1013 is located between the first layer of metal sheet 1011 and the second layer of metal sheet 1012, the third layer of metal sheet 1013 is connected to the second end of the second layer of metal sheet 1012 through the second connecting section and the third connecting section; the piercing section 103 and the guiding section 104 also pass through the third layer of metal sheet 1013.

[0057] By arranging the third layer of metal sheet 1013, the piercing section 103 and the guiding section 104 also pass through the third layer of metal sheet 1013, which increases the number of electrical connections between the wire and the terminal 1, a wire has two contacts (electrical contact after piercing the insulating layer) with a metal sheet, three layers of metal sheets can make a wire have six electrical connections with the terminal 1, which further improves the stability of the electrical connection between the wire and the terminal 1.

[0058] Further, the number of bending of the metal sheet can be further increased to increase the number of electrical connections between the wire and the terminal 1.

[0059] The same piercing section 103 can simultaneously accommodate multiple wires to realize the parallel connection of multiple wires.

[0060] Preferably, as shown inFigure 8 As shown, the bottom of the slot 201 is provided with a first positioning part 401, and the terminal 1 is provided with a second positioning part 402 which matches the first positioning part 401.

[0061] By arranging the first positioning part 401 and the second positioning part 402, the stability and accuracy of the fixation of the terminal 1 in the slot 201 are improved.

[0062] The application further provides a stator comprising an upper insulating framework 601 and a terminal device; the terminal seat 2 is arranged on the upper insulating framework 601.

[0063] The winding lead connection of the stator provided with the terminal device is simple and firm, and the production efficiency and operation stability are improved.

[0064] Since the wire of the winding of the stator is an enameled wire, the prior art needs to be stripped first and then welded for electrical connection, which is complex and may have a virtual welding. By using the terminal device, stripping and welding are not needed, the process difficulty is reduced, and the cost is reduced.

[0065] The stator comprises the terminal 1, an insulating sheath, the upper insulating framework 601, the lower insulating framework 602, after the winding connection and installation are completed, the excess enameled wire is cut off, the end cover 5 is put into an injection mold, and then overall injection molding is performed. After the injection molding, the connection part 102 of the terminal 1 is used for wiring outside the plastic sealing material. After the stator uses the terminal 1, the overall volume is small, and the electrical connection with the outside is stable. The upper insulating framework 601 and the lower insulating framework 602 are both positioned and connected with the iron core through positioning columns.

[0066] The application provides a motor comprising the stator.

[0067] After the stator is used, the production efficiency of the motor is greatly improved; the motor is more stable during transportation, and the fixation of the winding of the stator is also more firm and stable during use. The motor is safer and more stable during operation, and the service life can be greatly improved, the safety hidden danger is low, and the influence of the external harsh environment is small.

[0068] Specifically, when the motor is a brushless direct current motor and adopts a Y-type wiring mode, the three-phase winding lead and the common end are electrically connected through the terminal 1, and two or more winding wires can be clamped into the same piercing section 103 to realize parallel connection. The connection of the common end can also be realized through the terminal 1.

[0069] The application provides a production method of the stator, the terminal 1 is inserted into the slot 201 of the terminal seat 2, and then the wire is clamped into the piercing section 103 of the terminal 1.

[0070] The prior art first clamps the wire into the piercing section 103, and then fixes the terminal 1 on the terminal seat 2. In the process of fixing the terminal 1, the wire is easy to shake on the terminal 1, and even falls off from the piercing section 103 when the wire is pulled by other objects, which increases the defective rate of the stator. In the present application, the terminal 1 is first inserted into the terminal seat 2, and then the wire is clamped into the piercing section 103 of the terminal 1. After the wire is clamped into the terminal 1, the wire will not fall off due to the movement of the terminal 1.

[0071] The overall production process of the stator includes: first, the upper and lower insulation frames 601 and 602 are inserted and sleeved on the core of the stator, and the mounting positions provided on the upper and lower insulation frames 601 and 602 are aligned with the limiting grooves 2011 of the stator core, and the winding stator is produced by winding the winding according to the conventional process; the terminal 1 is installed in the terminal seat 2 on the upper insulation frame 601, and the second clamping part 1022 on the terminal 1 is checked through the window 203 of the terminal seat 2 provided on the upper insulation frame 601, whether it is in place, at the same time, the first clamping part 1021 on the terminal 1 is deformed in the process of inserting the terminal 1 into the insertion slot 201 of the terminal seat 2, thereby achieving the effect of fixing the terminal 1, and after determining that it is in place, the enameled wire after winding is clamped into the piercing section 103 along the guide section 104, and the terminal 1 achieves the effect of removing the enamel and piercing and fixing the enameled wire during the clamping process; further, the piercing section 103 and the guide section 104 are provided as a left-right symmetrical structure (as shown in Figure 8 After the above steps are completed, the excess enameled wire is cut off, and the insulation cover 3 in the present wiring structure is installed, which covers and insulates the terminal seat 2 and the terminal 1 while avoiding the enameled wire; after the insulation cover 3 is installed in place, it also has the fixing effect of preventing the enameled wire from loosening. Finally, the overall injection molding process is performed, and after the injection molding is completed, the insulation cover 3 is completely wrapped in the plastic sealing material, and only the connecting part 102 of the terminal 1 is exposed outside the injection molded stator. The terminal 1 can satisfy the simultaneous conduction of multiple enameled wires and the consistent conduction effect, and even a single enameled wire can be used, the wiring method is consistent, and there is no need to replace the matching tooling or materials, thereby saving time and meeting the needs of various types of wiring. At the same time, the piercing part 101 of the entire terminal 1 is wrapped in the plastic sealing material after the injection molding is completed, has a long service life, and can better resist external harsh environments.

[0072] Those skilled in the art can easily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0073] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wiring device for piercing and fixing a wire, the wiring device comprising a terminal (1) and a terminal seat (2) provided with a slot (201), the terminal (1) being inserted into the terminal seat (2), characterized in that, The wiring terminal (1) comprises a piercing part (101) and a connecting part (102), the piercing part (101) comprises at least two layers of metal sheets, the two sides of the first layer of metal sheets (1011) are provided with first clamping parts (1021), the two sides of the second layer of metal sheets (1012) are provided with second clamping parts (1022), the second layer of metal sheets (1012) is provided with a deformation groove (1014), and the deformation groove (1014) is located between the two second clamping parts (1022); a limiting groove (2011) opposite to the second clamping part (1022) is arranged in the insertion groove (201). The piercing part (101) is provided with a piercing section (103) extending along a first direction, the piercing part (101) further comprises a guide section (104), a first end of the guide section (104) is a clamping opening of the wire, a second end of the guide section (104) is communicated with the piercing section (103), and a direction of the first end of the guide section (104) is a second direction, and the second direction is not parallel to the first direction. The opening of the guide section (104) is farther away from the bottom of the terminal seat (2) than the second clamping part (1022), and the opening of the guide section (104) is located on the side wall of the piercing part (101) on one side in the second direction.

2. The wiring device of claim 1, wherein, The piercing section (103) is used for piercing and fixing the wire, the terminal seat (2) is provided with a limiting section (202) extending along the first direction and corresponding to the piercing section (103), and the minimum width of the limiting section (202) is greater than the outer diameter of the wire.

3. The wiring device of claim 2, wherein, The wiring device comprises an insulating cover (3), the insulating cover (3) is sleeved on the terminal seat (2), the insulating cover (3) is provided with a giving slot (301) extending along the first direction, and the giving slot (301) is opposite to the piercing section (103).

4. The wiring device of claim 3, wherein, The insulating cover (3) is provided with a plug hole (302), the connecting part (102) is inserted into the plug hole (302) and penetrates out of the insulating cover (3).

5. The wiring device of claim 1, wherein, The wiring terminal (1) is formed by bending a single metal sheet, the connecting part (102) and the first layer of metal sheets (1011) are the same metal plate surface, the connecting part (102) is connected with the first end of the first layer of metal sheets (1011), the first end of the second layer of metal sheets (1012) is connected with the second end of the first layer of metal sheets (1011) through a first connecting section, the second end of the second layer of metal sheets (1012) is not connected with the first layer of metal sheets (1011) and the connecting part (102), and the piercing section (103) and the guide section (104) penetrate through the first layer of metal sheets (1011) and the second layer of metal sheets (1012).

6. The wiring device of claim 5, wherein, The wiring device further comprises a third layer of metal sheet (1013) between the first layer of metal sheet (1011) and the second layer of metal sheet (1012), the third layer of metal sheet (1013) is connected to the second end of the second layer of metal sheet (1012) through a third connecting section via a second connecting section; the piercing section (103) and the guiding section (104) further pass through the third layer of metal sheet (1013).

7. The wiring device of claim 1, wherein, The maximum distance between two first clamping portions (1021) is L1, the maximum distance between the opposite side edges of the slot (201) relative to the two sides of the first layer of metal sheet (1011) is L2, 0.9L1 8. The wiring device of any of claims 1-7, wherein, The bottom of the slot (201) is provided with a first positioning portion (401), the wiring terminal (1) is provided with a second positioning portion (402), the second positioning portion (402) matches the first positioning portion (401).

9. A stator characterized by, The terminal seat (2) is arranged on the upper insulating framework (601).

10. An electric machine characterized by The stator comprises the terminal seat (2).

11. A production method for the stator of claim 9, characterized by, First, the wiring terminal (1) is inserted into the slot (201) of the terminal seat (2), and then the wire is clamped into the piercing section (103) of the wiring terminal (1). The wiring device further comprises a third layer of metal sheet (1013) between the first layer of metal sheet (1011) and the second layer of metal sheet (1012), the third layer of metal sheet (1013) is connected to the second end of the second layer of metal sheet (1012) through a third connecting section via a second connecting section; the piercing section (103) and the guiding section (104) further pass through the third layer of metal sheet (1013). The maximum distance between two first clamping portions (1021) is L1, the maximum distance between the opposite side edges of the slot (201) relative to the two sides of the first layer of metal sheet (1011) is L2, 0.9L1 The bottom of the slot (201) is provided with a first positioning portion (401), the wiring terminal (1) is provided with a second positioning portion (402), the second positioning portion (402) matches the first positioning portion (401). The terminal seat (2) is arranged on the upper insulating framework (601). The stator comprises the terminal seat (2). First, the wiring terminal (1) is inserted into the slot (201) of the terminal seat (2), and then the wire is clamped into the piercing section (103) of the wiring terminal (1).

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