Connection terminal, stator assembly and electric motor

Abstract

A connection terminal, a stator assembly and an electric motor. The connection terminal comprises a lead pin (23) and a lead terminal (1), wherein the lead pin (23) has a limiting hole (232). The lead terminal (1) comprises: an insertion portion (11), wherein the insertion portion (11) has an insertion slot (113), a limiting protrusion (114) is provided on an inner wall of the insertion slot (113), the lead pin (23) is adapted to be inserted into the insertion slot (113) and is in interference fit with the insertion portion (11), and the limiting protrusion (114) is adapted to be located in the limiting hole (232); and a connection portion (12), wherein the connection portion (12) is connected to the insertion portion (11), and the connection portion (12) is configured to connect a lead (3).

Description

Connection terminal, stator assembly and motor

[0001] Cross-reference to related applications

[0002] This application is based on Chinese Patent Application No. 202411837682.1, 202423081336.3, filed on December 12, 2024, and claims priority to the Chinese Patent Application No. 202411837682.1, 202423081336.3, and the entire contents of the Chinese Patent Application No. 202411837682.1, 202423081336.3 are hereby incorporated by reference into this application. TECHNICAL FIELD

[0003] The present application relates to the technical field of electric machines, and in particular to a connection terminal, a stator assembly and a motor. BACKGROUND

[0004] In related technologies, the connection mode of the pin connected with the winding in the stator assembly of the motor and the power line is tin wire welding. This connection process produces tin beads, resulting in friction noise, affecting the user experience. In addition, this connection mode requires manual threading, tin welding and other operations, which is very inconvenient, inefficient and cannot realize automatic production, and there are also quality risks of virtual welding. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a connection terminal, the connection of the lead terminal of the connection terminal and the lead pin is more reliable.

[0006] The present application also provides a stator assembly, which comprises the above-mentioned connection terminal.

[0007] The present application also provides a motor, which comprises the above-mentioned stator assembly.

[0008] The connection terminal according to the embodiments of the present application is used for a motor, comprising a lead pin and a lead terminal, the lead pin is provided with a limiting hole, the lead terminal comprises: a plug-in part, the plug-in part is provided with a plug-in slot, the inner wall of the plug-in slot is provided with a limiting protrusion, the lead pin is adapted to be inserted into the plug-in slot and is in interference fit with the plug-in part, and the limiting protrusion is adapted to be located in the limiting hole; a connecting part connected with the plug-in part, the connecting part is used for connecting a lead.

[0009] According to the connecting terminal of the embodiment of the present application, on the basis of realizing convenient connection between the lead and the lead pin, the friction noise problem caused by tin beads generated by welding is avoided, and the experience of the user is improved. In addition, by arranging the limiting protrusion on the inner wall of the plug-in groove and arranging the limiting hole on the lead pin, after the lead pin is assembled in place in the plug-in groove, the limiting protrusion is clamped in the limiting hole, the reliability of the connection between the lead terminal and the lead pin can be improved, and thus the reliability of the connection between the lead and the winding is improved.

[0010] According to some embodiments of the present application, the plug-in part comprises a plug-in body, the connecting part is connected with the plug-in body, and the limiting protrusion is arranged on the plug-in body; a curled edge is arranged on one side of the plug-in body in the thickness direction and a first end of the curled edge is connected with the plug-in body, the curled edge is a curved type protruding away from the plug-in body in the thickness direction of the plug-in body, and a second end of the curled edge and the plug-in body define the plug-in groove, and the first end and the second end are opposite ends of the curled edge.

[0011] In some embodiments of the present application, there are two curled edges, and two first ends of the two curled edges are respectively connected to two ends of the plug-in body in the width direction.

[0012] In some embodiments of the present application, a stop protrusion is arranged on a side of the second end of the curled edge facing the plug-in body, and when the lead pin is located in the plug-in groove, the stop protrusion and the lead pin are arranged and abutted along the insertion direction of the lead pin.

[0013] In some embodiments of the present application, a reinforcing protrusion protruding into the plug-in groove is arranged on the plug-in body, and the limiting protrusion is arranged on the reinforcing protrusion.

[0014] According to some embodiments of the present application, the limiting hole is a plurality of limiting holes arranged at intervals, and the limiting protrusion is a plurality of limiting protrusions corresponding to the plurality of limiting holes; and / or, in the direction from the fixed end to the free end of the limiting protrusion, the cross-sectional area of the limiting protrusion gradually decreases.

[0015] According to some embodiments of the present application, the connecting part comprises a base plate, one end of the base plate in the length direction is connected with the plug-in part, and clamping parts are connected to both sides of the base plate in the width direction, and one end of the clamping part away from the base plate can be bent towards the base plate, so as to arrange the lead clamp between the base plate and the clamping part.

[0016] In some embodiments of the present application, a plurality of clamping parts are arranged on both sides of the base plate in the width direction, and the plurality of clamping parts on one side of the base plate in the width direction and the plurality of clamping parts on the other side of the base plate in the width direction are respectively arranged opposite to each other.

[0017] According to some embodiments of the present application, further comprising: a pressing portion, one end of the pressing portion is connected with the insertion portion, the connecting portion is connected with the insertion portion by being connected with the pressing portion, and the pressing portion is at an angle with the insertion direction of the lead terminal.

[0018] In some embodiments of the present application, the side of the insertion portion for the insertion of the lead terminal is an insertion side, and the pressing portion is connected to one end of the insertion portion away from the insertion side; and / or, a pressing reinforcing rib is arranged at the connection between the pressing portion and the insertion portion, and the pressing reinforcing rib extends to the pressing portion.

[0019] In some embodiments of the present application, the pressing portion comprises: a first plate body, one end of the first plate body is connected with the insertion portion; and a second plate body, one end of the second plate body is connected with the other end of the first plate body, and the first plate body and the second plate body are arranged in a stacked manner.

[0020] According to the stator assembly of the embodiments of the present application, the stator assembly comprises: a stator assembly comprising a housing and a winding, the winding being arranged in the housing; the above-mentioned connecting terminal, the lead pin being connected with the winding, and the limiting hole and the lead terminal being located outside the housing.

[0021] According to the stator assembly of the embodiments of the present application, by arranging the above-mentioned lead terminal, the friction noise problem caused by tin beads generated by welding can be avoided on the basis of convenient connection between the lead and the lead pin, and the experience of users is improved. In addition, by arranging the limiting protrusion on the inner wall of the insertion slot and arranging the limiting hole on the lead pin, after the lead pin is assembled in place in the insertion slot with interference, the limiting protrusion is clamped in the limiting hole, the reliability of the connection between the lead terminal and the lead pin can be improved, and thus the reliability of the connection between the lead and the winding is improved.

[0022] In some embodiments of the present application, a connecting groove is arranged on the outer wall surface of the housing, the lead pin is arranged to pass through the bottom wall of the connecting groove and partially located in the connecting groove, the limiting hole is located in the connecting groove, and at least part of the insertion portion is located in the connecting groove; and / or, the lead pin passes out of the housing from the axial end surface of the housing; and / or, the lead pin is a plurality of lead pins arranged at intervals, and the lead terminal is a plurality of lead terminals corresponding to the plurality of lead pins.

[0023] According to the motor of the embodiments of the present application, the motor comprises the above-mentioned stator assembly.

[0024] According to the motor of the embodiment of the present application, by setting the stator assembly, setting the lead terminal, on the basis of realizing convenient connection between the lead and the lead pin, the problem of friction noise caused by tin beads generated by welding is avoided, and the experience of the user is improved. In addition, by setting the limiting protrusion on the inner wall of the plug-in slot and setting the limiting hole on the lead pin, after the lead pin is assembled in place in the plug-in slot, the limiting protrusion is clamped in the limiting hole, the reliability of the connection between the lead terminal and the lead pin can be improved, thereby improving the reliability of the connection between the lead and the winding.

[0025] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0027] Fig. 1 is a perspective view of a stator assembly according to an embodiment of the present application;

[0028] Fig. 2 is a perspective view of a stator assembly according to an embodiment of the present application, wherein the lead is not shown;

[0029] Fig. 3 is an enlarged view of B in Fig. 2;

[0030] Fig. 4 is an exploded view of a stator assembly according to an embodiment of the present application;

[0031] Fig. 5 is an enlarged view of C in Fig. 4;

[0032] Fig. 6 is a perspective view of a stator assembly of a stator assembly according to an embodiment of the present application;

[0033] Fig. 7 is a sectional view of a stator assembly according to an embodiment of the present application;

[0034] Fig. 8 is an enlarged view of D in Fig. 7;

[0035] Fig. 9 is a perspective view of a lead terminal according to an embodiment of the present application;

[0036] Fig. 10 is an enlarged view of E in Fig. 9;

[0037] Fig. 11 is a perspective view of a lead terminal according to an embodiment of the present application from another angle;

[0038] Fig. 12 is a perspective view of a lead pin of a stator assembly according to an embodiment of the present application.

[0039] REFERENCE NUMERALS:

[0040] 100, stator assembly;

[0041] 1, lead terminal; 11, plug-in part; 111, plug-in main body; 1111, reinforcing protrusion; 112, crimping; 1121, stop protrusion; 1122, guide slope; 113, plug-in slot; 114, limiting protrusion; 115, groove; 12, connecting part; 121, base plate; 122, clamping part; 1221, first clamping part; 1222, second clamping part; 123, connecting reinforcing rib; 13, pressing part; 131, first plate body; 132, second plate body; 133, pressing reinforcing rib;

[0042] 2, stator assembly; 21, housing; 211, connecting slot; 22, winding; 23, lead pin; 231, guide part; 232, limiting hole;

[0043] 3, lead. Embodiments of the present application

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of “a plurality of” is two or more.

[0046] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connection” should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] The connecting terminal according to the embodiments of the present application is described below with reference to the accompanying drawings.

[0048] The connecting terminal according to the embodiments of the present application is used for a motor and comprises a lead pin 23 and a lead terminal 1, wherein the motor can be a plastic-sealed brushless direct-current motor, and specifically, as shown in FIG. 1, FIG. 7 and FIG. 8, the motor comprises a stator assembly 100, the stator assembly 100 comprises a stator component 2, the stator component 2 comprises a housing 21 and a winding 22, the winding 22 is arranged in the housing 21, the lead pin 23 is connected with the winding 22, at least part of the lead pin 23 is located outside the housing 21 for connecting with the lead terminal 1, and the lead terminal 1 is used for connecting a lead wire 3.

[0049] As shown in FIG. 2 and FIG. 3, in combination with FIG. 9 and FIG. 10, the lead terminal 1 comprises a plug-in part 11 and a connecting part 12, the plug-in part 11 has a plug-in slot 113, the lead pin 23 is adapted to be inserted in the plug-in slot 113 and is in interference fit with the plug-in part 11, the connecting part 12 is connected with the plug-in part 11, and the connecting part 12 is used for connecting the lead wire 3. The lead pin 23 is inserted in the plug-in slot 113 to realize the connection between the lead pin 23 and the lead terminal 1, thereby realizing the connection between the winding 22 and the lead wire 3, such as a power line.

[0050] In the present application, the lead terminal 1 is arranged so that the lead wire 3 and the lead pin 23 are connected through the plug-in connection of the lead terminal 1 and the lead pin 23, which can avoid the threading and welding operation of the lead wire 3 and the lead pin 23, can simplify the connection mode between the lead wire 3 and the lead pin 23, is convenient to operate, improves the connection efficiency and can realize the automatic production. In addition, the welding connection of the lead wire 3 and the lead pin 23 can be avoided, the quality risk of virtual welding and the friction noise problem caused by tin beads generated by welding can be avoided, and the experience of users is improved.

[0051] In addition, the lead pin 23 is in interference fit with the plug-in part 11 in the plug-in slot 113, which can improve the reliability of the fixation of the lead pin 23 and the plug-in slot 113, avoid the disconnection of the lead terminal 1 from the lead pin 23, ensure the reliability of the connection between the lead terminal 1 and the lead pin 23, and thereby ensure the reliability of the connection between the lead wire 3 and the winding 22.

[0052] Further, as shown in FIGS. 8, 9, 10 and 12, in combination with FIGS. 4 and 5, the inner wall of the insertion slot 113 is provided with a limiting protrusion 114, which is adapted to be located in the limiting hole 232. It can be understood that after the lead terminal 1 and the lead pin 23 are assembled in place with interference, the limiting protrusion 114 is just buckled in the limiting hole 232 of the lead pin 23. The cooperation of the limiting protrusion 114 and the limiting hole 232 makes the lead terminal 1 locked on the lead pin 23, so that the lead terminal 1 can be directly and effectively buckled on the lead pin 23, effectively restricts the lead terminal 1 in the insertion direction of the lead pin 23 and the insertion slot 113, avoids the lead terminal 1 from being separated from the lead pin 23, and improves the reliability of the connection between the lead terminal 1 and the lead pin 23.

[0053] The connection terminal according to the embodiments of the present application can realize convenient connection between the lead 3 and the lead pin 23, avoid friction noise caused by tin beads generated by welding, and improve user experience. In addition, by providing the limiting protrusion 114 on the inner wall of the insertion slot 113 and the limiting hole 232 on the lead pin 23, after the lead pin 23 is assembled in place in the insertion slot 113 with interference, the limiting protrusion 114 is clamped in the limiting hole 232, which can improve the reliability of the connection between the lead terminal 1 and the lead pin 23, thereby improving the reliability of the connection between the lead 3 and the winding 22.

[0054] In some embodiments of the present application, as shown in FIGS. 9 and 10, the insertion part 11 includes an insertion main body 111 and a curled edge 112, the insertion main body 111 is formed as a plate-shaped structure, the connection part 12 is connected with the insertion main body 111, the curled edge 112 is provided on one side of the insertion main body 111 in the thickness direction and the first end is connected with the insertion main body 111, the curled edge 112 is a curved line type protruding away from the insertion main body 111 in the thickness direction of the insertion main body 111, the second end of the curled edge 112 and the insertion main body 111 define the insertion slot 113, and the first end and the second end are opposite ends of the curled edge 112. When the lead pin 23 is not inserted into the insertion slot 113, the distance between the second end of the curled edge 112 and the insertion main body 111 can be less than or equal to the thickness of the insertion part of the lead pin 23. Since the curled edge 112 is curvedly arranged, the curled edge 112 has elasticity, and when the lead pin 23 is inserted into the insertion slot 113, the second end of the curled edge 112 can deform and move towards the direction away from the insertion main body 111, so as to facilitate the insertion of the lead pin 23 into the insertion slot 113. After the lead pin 23 is inserted into the insertion slot 113, the second end of the curved edge 112 can abut against the lead pin 23, and the lead pin 23 can abut against the insertion main body 111, so as to realize the interference fit between the lead pin 23 and the insertion part 11, and ensure the reliability of the fixed connection and the electrical connection between the lead terminal 1 and the lead pin 23.

[0055] The limiting protrusion 114 is arranged on the insertion body 111 due to the small area of the second end of the curled edge 112, facilitating the arrangement of the limiting protrusion 114 and the processing and manufacturing of the insertion part 11. Of course, the present application is not limited thereto, and the limiting protrusion 114 can also be arranged on the second end of the curled edge 112.

[0056] Further, as shown in FIGS. 9 and 10, the curled edge 112 is two, the two first ends of the two curled edges 112 are respectively connected to the two ends of the insertion body 111 in the width direction, the second ends of the two curled edges 112 are respectively curled towards each other, the second ends of the two curled edges 112 are located between the first ends of the two curled edges 112, and the second ends of the two curled edges 112 and the insertion body 111 define the insertion slot 113. On the side of the insertion slot 113 away from the insertion body 111, due to the presence of the two curled edges 112, the reliability of fixing the lead pin 23 can be improved, the rotation of the lead pin 23 in the insertion slot 113 is avoided, and the lead terminal 1 is prevented from being separated from the lead pin 23.

[0057] In some embodiments of the present application, as shown in FIGS. 9 and 10, the second end of the curled edge 112 is provided with a stop protrusion 1121 on the side facing the insertion body 111, and when the lead pin 23 is located in the insertion slot 113, the stop protrusion 1121 and the lead pin 23 are arranged and abutted along the insertion direction of the lead pin 23. It can be understood that the stop protrusion 1121 is located downstream of the insertion slot 113 in the insertion direction of the lead pin 23. The abutment of the stop protrusion 1121 and the lead pin 23 can limit the continuous insertion of the lead pin 23 towards the insertion slot 113, limit the insertion depth of the lead pin 23, and ensure the reliability of the connection between the lead pin 23 and the lead terminal 1, thereby ensuring the reliability of the connection between the lead 3 and the winding 22.

[0058] In addition, it can be understood that when the lead pin 23 abuts against the stop protrusion 1121, the limiting protrusion 114 is just located in the limiting hole 232, and the lead terminal 1 is limited in the insertion direction of the lead pin 23 through the cooperation of the limiting protrusion 114 and the limiting hole 232 and the cooperation of the lead pin 23 and the stop protrusion 1121, thereby ensuring the reliability of the connection between the limiting terminal and the lead pin 23.

[0059] In some embodiments of the present application, as shown in FIG. 11, the second end of the curled edge 112 has a guide slope 1122 on the side of the surface of the insertion body 111 close to the insertion of the lead pin 23, and the guide slope 1122 is inclined towards the insertion body 111 in the insertion direction of the lead pin 23. It can be understood that due to the arrangement of the guide slope 1122, the insertion port of the insertion slot 113 forms a horn shape, facilitating the insertion of the lead pin 23 into the insertion slot 113.

[0060] In addition, as shown in FIG. 12, the end of the lead pin 23 inserted into the insertion slot 113 first has a guide portion 231, the thickness of the guide portion 231 gradually decreases along the insertion direction of the lead pin 23, the maximum thickness of the guide portion 231 is the same as the thickness of the rest of the lead pin 23, in addition, the width of the guide portion 231 gradually decreases along the insertion direction of the lead pin 23, the guide portion 231 plays a guiding role when the lead pin 23 is inserted into the insertion slot 113, facilitating the insertion of the lead pin 23 into the insertion slot 113, facilitating the cooperation of the lead terminal 1 and the lead pin 23.

[0061] In some embodiments of the present application, as shown in FIG. 11, the insertion main body 111 is provided with a reinforcing protrusion 1111 protruding into the insertion slot 113, and the limiting protrusion 114 is arranged on the reinforcing protrusion 1111. The reinforcing protrusion 1111 can strengthen the structural strength of the insertion main body 111, thereby improving the fixing reliability of the reinforcing protrusion 1111 arranged on the insertion portion 11, and further improving the fixing reliability of the limiting protrusion 114 and the limiting hole 232, thereby ensuring the fixing reliability of the lead terminal 1 and the lead pin 23.

[0062] As shown in FIG. 11, the limiting protrusion 114 is formed by the part of the insertion main body 111 protruding into the insertion slot 113, and a groove 115 is arranged on the side of the insertion main body 111 away from the insertion slot 113 corresponding to the position of the limiting protrusion 114.

[0063] In some embodiments of the present application, the limiting holes 232 are a plurality of limiting holes arranged at intervals, the limiting protrusions 114 are a plurality of limiting protrusions corresponding to the plurality of limiting holes 232, and the cooperation of the plurality of limiting holes 232 and the plurality of limiting protrusions 114 can improve the fixing reliability between the lead terminal 1 and the lead pin 23. For example, when the limiting holes 232 and the limiting protrusions 114 are both a plurality of corresponding limiting holes and limiting protrusions, the plurality of limiting protrusions 114 can be arranged at intervals in the depth direction of the insertion slot 113, i.e., the insertion direction of the lead pin 23, and the corresponding plurality of limiting holes 232 are arranged at intervals in the insertion direction of the limiting pin; or the plurality of limiting protrusions 114 are arranged at intervals in a direction perpendicular to the depth direction of the insertion slot 113, and the corresponding plurality of limiting holes 232 are arranged at intervals in a direction perpendicular to the insertion direction of the limiting pin; or the plurality of limiting protrusions 114 are arranged in multiple rows and multiple columns, and correspondingly, the plurality of limiting holes 232 are arranged in multiple rows and multiple columns; or the plurality of limiting protrusions 114 are arranged at the vertex positions of a polygon, and correspondingly, the plurality of limiting holes 232 are arranged at the vertex positions of the corresponding polygon.

[0064] In some embodiments of the present application, as shown in FIG. 10, the cross-sectional area of the limiting protrusion 114 gradually decreases in the direction from the fixed end to the free end of the limiting protrusion 114. For example, in the direction from the fixed end to the free end of the limiting protrusion 114, the side wall of the limiting protrusion 114 is inclined towards the center line of the limiting protrusion 114, which can guide the limiting protrusion 114 into the limiting hole 232, facilitating the insertion or disengagement of the limiting protrusion 114 into the limiting hole 232 during the cooperation and disengagement of the lead terminal 1 and the lead pin 23.

[0065] In some embodiments of the present application, the cross-section of the limiting protrusion 114 can be circular, elliptical or polygonal, such as triangular, quadrangular or pentagonal, etc. In the example shown in FIG. 10, the cross-section of the limiting protrusion 114 is circular, and the cross-sectional area of the limiting protrusion 114 gradually decreases in the direction from the fixed end to the free end of the limiting protrusion 114, and the limiting protrusion 114 is formed in a conical or circular truncated cone shape.

[0066] In some embodiments of the present application, as shown in FIGS. 9 and 11, the connecting portion 12 includes a substrate 121 and a clamping portion 122, one end of the substrate 121 in the length direction is connected with the insertion portion 11, and the extension direction of the substrate 121 can be at an angle, for example, perpendicular to the depth direction of the insertion slot 113, i.e., the insertion direction of the lead pin 23. Thus, the connection of the lead 3 and the connecting portion 12 is facilitated, and interference of the lead 3 and the connecting portion 12 with the insertion of the insertion portion 11 and the lead pin 23 is avoided, facilitating the connection of the insertion portion 11 and the lead pin 23.

[0067] In some embodiments of the present application, as shown in FIGS. 9 and 11, the connecting portion 12 includes a substrate 121 and a clamping portion 122, one end of the substrate 121 in the length direction is connected with the insertion portion 11, and the extension direction of the substrate 121 can be at an angle, for example, perpendicular to the depth direction of the insertion slot 113, i.e., the insertion direction of the lead pin 23. Thus, the connection of the lead 3 and the connecting portion 12 is facilitated, and interference of the lead 3 and the connecting portion 12 with the insertion of the insertion portion 11 and the lead pin 23 is avoided, facilitating the connection of the insertion portion 11 and the lead pin 23.

[0068] The two sides of the substrate 121 in the width direction are connected with the clamping portions 122, and the end of the clamping portion 122 away from the substrate 121 can be bent towards the substrate 121, for clamping the lead 3 between the substrate 121 and the clamping portion 122. In the initial state, the end of the two clamping portions 122 away from the substrate 121 extends in a direction away from each other, and when connecting the lead 3, the lead 3 is placed in the extension direction of the substrate 121, and the end of the two clamping portions 122 away from the substrate 121 is bent towards each other and clamps the lead 3 between the clamping portion 122 and the substrate 121, while achieving electrical connection between the substrate 121 and / or the clamping portion 122 and the lead 3.

[0069] Furthermore, as shown in Figures 9 and 11, multiple clamping portions 122 are provided on both sides of the substrate 121 in the width direction, and the multiple clamping portions 122 on one side of the substrate 121 in the width direction are respectively arranged opposite to the multiple clamping portions 122 on the other side. This can improve the clamping reliability of the lead 3 and ensure the reliability of the connection between the lead 3 and the connecting portion 12. For example, in the example shown in Figures 9 and 11, two clamping portions 122 are provided on both sides of the substrate 121 in the width direction. The two clamping portions 122 on the same side of the substrate 121 in the width direction are spaced apart in the length direction of the substrate 121. The clamping portion 122 closer to the insertion portion 11 can be the first clamping portion 1221, and the clamping portion 122 farther away from the insertion portion 11 can be the second clamping portion 1222. The substrate 121 can be arc-shaped at least at the first clamping portion 1221 and the second clamping portion 1222, which facilitates cooperation with the lead 3, improves the clamping effect of the lead 3, and improves the reliability of fixing the lead 3.

[0070] In addition, the width of the substrate 121 at the first clamping part 1221 is smaller than the width of the substrate 121 at the second clamping part 1222. The lead wire 3 includes a conductor and a coating covering the conductor. When connecting the lead wire 3, the coating at one end of the lead wire 3 can be removed to expose the internal conductor. The first clamping part 1221 is used to clamp the conductor portion with the coating removed, and the second clamping part 1222 is used to clamp the lead wire 3 portion with the coating not removed. This not only improves the reliability of fixing the lead wire 3 to the connecting part 12, but also improves the reliability of the electrical connection between the lead wire 3 and the connecting part 12.

[0071] It is understood that both lead terminal 1 and lead pin 23 are conductive components.

[0072] In the example shown in FIG11, referring to FIG3, after the lead terminal 1 is connected to the lead pin 23, the clamping part 122 is located on the side of the substrate 121 facing the housing 21, and the lead 3 is located on the side of the substrate 121 facing the housing 21.

[0073] Furthermore, as shown in Figures 9 and 11, a connecting reinforcing rib 123 is provided on the substrate 121 at the first clamping part 1221. The two ends of the connecting reinforcing rib 123 extend to the two first clamping parts 1221. The connecting reinforcing rib 123 protrudes inward, i.e., protrudes toward the wire, thereby improving the reliability of the electrical connection between the substrate 121 and / or the first clamping part 1221 and the wire at the first clamping part 1221.

[0074] In some embodiments of this application, the connecting reinforcing ribs 123 are a plurality of spaced-apart ribs along the length direction of the substrate 121. For example, in the example shown in FIG9 and FIG11, the connecting reinforcing ribs 123 are two spaced-apart ribs along the length direction of the substrate 121.

[0075] In some embodiments of this application, as shown in Figures 9 and 11, the lead terminal 1 further includes a pressing part 13, one end of which is connected to the insertion part 11. The pressing part 13 and the insertion direction of the lead terminal 1 are at an angle to each other, for example, perpendicular to each other. When the lead terminal 1 is connected to the lead pin 23, the insertion part 11 can be pressed toward the lead pin 23 by pressing the pressing part 13, so that the lead pin 23 is inserted into the insertion slot 113, which facilitates the installation of the lead terminal 1 onto the stator assembly 2.

[0076] The connecting part 12 is connected to the plug-in part 11 via the pressing part 13. It can be understood that the pressing part 13 is directly connected to the plug-in part 11, the connecting part 12 is indirectly connected to the plug-in part 11, and the connecting part 12 is directly connected to the pressing part 13. The connecting part 12 achieves its connection to the plug-in part 11 through its connection with the pressing part 13. The connecting part 12 can be connected to one side of the pressing part 13 in the width direction. This facilitates the connection between the pressing part 13 and the plug-in part 11, allowing the lead terminal 1 to be installed using the pressing part 13.

[0077] In some embodiments of this application, as shown in Figures 5 and 8, and in conjunction with Figure 9, the side of the plug portion 11 for inserting the lead terminal 1 is the insertion side, and the pressing part 13 is connected to the end of the plug portion 11 opposite to the insertion side. It can be understood that the pressing part 13 is connected to one end of the plug portion 11 along the depth direction of the plug groove 113. After the lead terminal 1 is inserted into the lead pin 23, the pressing part 13 can be connected to the end of the plug portion 11 opposite to the housing 21 along the depth direction of the plug groove 113. This avoids interference between the pressing part 13 and the housing 21, preventing interference with the connection between the lead terminal 1 and the lead pin 23, and also facilitates the application of force by the operator.

[0078] In some embodiments of this application, as shown in FIG9, a pressing reinforcing rib 133 is provided at the connection between the pressing part 13 and the insertion part 11, and the pressing reinforcing rib 133 extends onto the pressing part 13. This can improve the reliability of the connection between the pressing part 13 and the insertion part 11, and ensure that the relative position of the pressing part 13 and the insertion part 11 does not change.

[0079] In some embodiments of this application, there are multiple pressing reinforcing ribs 133, which are spaced apart along the length of the connection between the pressing part 13 and the insertion part 11. For example, in the example shown in FIG9, there are two pressing reinforcing ribs 133 that are spaced apart.

[0080] In some embodiments of this application, as shown in Figures 8 and 11, the pressing part 13 includes a first plate 131 and a second plate 132. One end of the first plate 131 is connected to the insertion part 11, and one end of the second plate 132 is connected to the other end of the first plate 131. The first plate 131 and the second plate 132 are stacked. This improves the structural strength of the pressing part 13 and ensures the reliability of its operation.

[0081] The first plate 131 and the second plate 132 can be a single piece, and the second plate 132 can be formed by bending the entire plate structure. In the example shown in Figure 11, referring to Figure 3, after the lead terminal 1 is connected to the lead pin 23, the second plate 132 is located on the side of the first plate 131 facing the housing 21.

[0082] In some embodiments of this application, as shown in Figures 9 and 11, the lead terminal 1 is an integral piece.

[0083] In some embodiments of this application, the lead pin 23 and the lead terminal 1 are both copper alloys, such as brass or phosphor bronze. In addition, the outer surfaces of the lead pin 23 and the lead terminal 1 are plated with a tin film.

[0084] The stator assembly 100 according to an embodiment of this application is described below.

[0085] As shown in FIG1, the stator assembly 100 according to an embodiment of the present application includes a stator component 2 and the connection terminal described above.

[0086] Specifically, as shown in Figures 6 and 7, the stator assembly 2 includes a housing 21 and a winding 22. The winding 22 is disposed inside the housing 21, and the lead pin 23 is connected to the winding 22. At least a portion of the lead pin 23 is located outside the housing 21, and the portion outside the housing 21 has a limiting hole 232 to facilitate the connection between the lead pin 23 and the lead terminal 1 located outside the housing 21. The lead pin 23 is inserted into the insertion slot 113 and is interference-fitted with the insertion part 11, and the limiting protrusion 114 is located within the limiting hole 232.

[0087] The lead pin 23 is inserted into the insertion slot 113 to connect the lead pin 23 and the lead terminal 1, thereby connecting the winding 22 and the lead 3, such as a power line. Furthermore, the interference fit between the lead pin 23 and the insertion part 11 within the insertion slot 113 improves the reliability of the fixation between the lead pin 23 and the insertion slot 113, preventing the lead terminal 1 from detaching from the lead pin 23 and ensuring the reliability of the connection between the lead terminal 1 and the lead pin 23, thus ensuring the reliability of the connection between the lead 3 and the winding 22.

[0088] The limiting protrusion 114 is adapted to be located within the limiting hole 232. After the lead terminal 1 and the lead pin 23 are interference-fitted into place, the limiting protrusion 114 is precisely engaged within the limiting hole 232 of the lead pin 23. The cooperation between the limiting protrusion 114 and the limiting hole 232 locks the lead terminal 1 onto the lead pin 23, allowing the lead terminal 1 to be directly, effectively, and reliably engaged with the lead pin 23. This effectively constrains the lead terminal 1 in the insertion direction of the lead pin 23 and the insertion groove 113, preventing the lead terminal 1 from detaching from the lead pin 23 and improving the reliability of the connection between the lead terminal 1 and the lead pin 23.

[0089] According to the stator assembly 100 of this application embodiment, by providing the above-mentioned connection terminals, the connection between the lead wire 3 and the lead pin 23 can be conveniently achieved, while avoiding the friction noise problem caused by solder balls generated during soldering, thus improving the user experience. In addition, by providing a limiting protrusion 114 on the inner wall of the insertion groove 113 and a limiting hole 232 on the lead pin 23, after the lead pin 23 is interference-fitted into place in the insertion groove 113, the limiting protrusion 114 is engaged in the limiting hole 232, which can improve the reliability of the connection between the lead terminal 1 and the lead pin 23, thereby improving the reliability of the connection between the lead wire 3 and the winding 22.

[0090] In some embodiments of this application, as shown in Figures 2 and 3, and referring to Figure 6, a connecting groove 211 is provided on the outer wall surface of the housing 21. The lead pin 23 passes through the bottom wall of the connecting groove 211 and is partially located within the connecting groove 211. The limiting hole 232 is located within the connecting groove 211. At least a portion of the insertion part 11 is located within the connecting groove 211. This avoids the lead pin 23 from protruding from the housing 21, which helps to reduce the volume of the stator assembly 100. On the other hand, the lead terminal 1 is located within the connecting groove 211, which can further improve the reliability of the lead terminal 1 fixation.

[0091] Furthermore, the lead terminal 1 can also be interference-fitted with the inner wall of the connecting groove 211 to further improve the reliability of the lead terminal 1 fixation.

[0092] In some embodiments of this application, as shown in FIG6, the lead pin 23 extends out of the housing 21 from the axial end face of the housing 21, thereby facilitating the extension of the lead pin 23 and the connection between the lead pin 23 and the lead terminal 1, and making the structure of the stator assembly 100 more compact and reasonable, which is beneficial to reducing the volume of the stator assembly 100.

[0093] In some embodiments of this application, there are multiple lead pins 23 spaced apart, and multiple corresponding lead terminals 1. For example, in the example shown in FIG6, there are five lead pins 23 spaced apart along the circumferential direction of the housing 21, as shown in FIG1. ​​There are three lead terminals 1, which are respectively connected to three lead pins 23. These three lead pins 23 are respectively connected to the three-phase wire harness of the winding 22. The remaining lead pins 23 can be used to connect to the star wires of the winding 22, etc.

[0094] In some embodiments of this application, the stator assembly 2 is a molded integral part.

[0095] The following describes a motor according to an embodiment of this application.

[0096] The motor according to an embodiment of this application includes the stator assembly 100 described above. The motor according to this embodiment may further include a rotor, which is rotatably disposed within the stator assembly 100.

[0097] According to the embodiments of this application, the motor, by providing the stator assembly 100 and the connection terminals described above, facilitates the connection between the lead wire 3 and the lead pin 23 while avoiding frictional noise caused by solder balls generated during soldering, thus improving the user experience. Furthermore, by providing a limiting protrusion 114 on the inner wall of the insertion slot 113 and a limiting hole 232 on the lead pin 23, the limiting protrusion 114 is engaged within the limiting hole 232 after the lead pin 23 is press-fitted into place within the insertion slot 113. This improves the reliability of the connection between the lead terminal 1 and the lead pin 23, thereby enhancing the reliability of the connection between the lead wire 3 and the winding 22.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A connection terminal, wherein, For use in motors, including lead pins and lead terminals, the lead pins having limiting holes, and the lead terminals including: The connector has a connector groove, and the inner wall of the connector groove has a limiting protrusion. The lead pin is adapted to be inserted into the connector groove and to be interference-fitted with the connector. The limiting protrusion is adapted to be located in the limiting hole. A connecting part, which is connected to the plug-in part, is used to connect a lead wire.

2. The connection terminal according to claim 1, wherein, The connector includes: A plug-in body, wherein the connecting part is connected to the plug-in body, and the limiting protrusion is provided on the plug-in body; The rolled edge is located on one side of the thickness direction of the plug body and its first end is connected to the plug body. The rolled edge is a curved shape that protrudes from the direction of the plug body along the thickness direction of the plug body. The second end of the rolled edge defines the plug groove between itself and the plug body. The first end and the second end are the two opposite ends of the rolled edge.

3. The connection terminal according to claim 2, wherein, There are two rolled edges, and the two first ends of the two rolled edges are respectively connected to the two ends of the insertion body in the width direction.

4. The connection terminal according to claim 2 or 3, wherein, The second end of the rolled edge has a stop protrusion on the side facing the plug body. When the lead pin is located in the plug groove, the stop protrusion and the lead pin are arranged along the insertion direction of the pin and stop each other.

5. The connecting terminal according to any one of claims 2-4, wherein, The plug-in body is provided with a reinforcing protrusion protruding into the plug-in groove, and the limiting protrusion is provided on the reinforcing protrusion.

6. The connecting terminal according to any one of claims 1-5, wherein, The limiting holes are a plurality of spaced-apart holes, and the limiting protrusions are a plurality of holes corresponding to the plurality of limiting holes; And / or, in the direction from the fixed end to the free end of the limiting protrusion, the cross-sectional area of ​​the limiting protrusion gradually decreases.

7. The connecting terminal according to any one of claims 1-6, wherein, The connecting part includes: A substrate, one end of which is connected to the insertion portion along its length; The clamping part is connected to both sides of the substrate in the width direction. The end of the clamping part away from the substrate can be bent toward the substrate to clamp the lead wire between the substrate and the clamping part.

8. The connection terminal according to claim 7, wherein, The substrate has multiple clamping portions on both sides in the width direction, and the multiple clamping portions on one side of the substrate are respectively arranged opposite to the multiple clamping portions on the other side in the width direction.

9. The connecting terminal according to any one of claims 1-8, wherein, Also includes: The pressing part has one end connected to the plug-in part, and the connecting part is connected to the pressing part to connect to the plug-in part. The pressing part and the insertion direction of the lead terminal are at an angle to each other.

10. The connection terminal according to claim 9, wherein, The side of the plug portion used for inserting the lead terminal is the insertion side, and the pressing part is connected to the end of the plug portion opposite to the insertion side; And / or, a pressing reinforcing rib is provided at the connection between the pressing part and the insertion part, and the pressing reinforcing rib extends to the pressing part.

11. The connection terminal according to claim 9 or 10, wherein, The pressing part includes: A first plate, one end of which is connected to the plug-in portion; The second plate has one end connected to the other end of the first plate, and the first plate and the second plate are stacked together.

12. A stator assembly, wherein, include: A stator assembly, the stator assembly including a housing and windings, the windings being disposed within the housing; The connecting terminal according to any one of claims 1-11, wherein the lead pin is connected to the winding, and the limiting hole and the lead terminal are located outside the housing.

13. The stator assembly according to claim 12, wherein, The outer wall of the housing is provided with a connecting groove, the lead pin passes through the bottom wall of the connecting groove and is partially located in the connecting groove, the limiting hole is located in the connecting groove, and at least a portion of the plug is located in the connecting groove; And / or, the lead pin extends out of the housing from the axial end face of the housing; And / or, the lead pins are a plurality of spaced-apart pins, and the lead terminals are a plurality of corresponding terminals.

14. An electric motor, wherein, Includes the stator assembly according to claim 12 or 13.

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