A busbar connection structure and motor

Abstract

The present invention provides a busbar connection structure and a motor. The busbar connection structure includes an insulating frame, a limiting locking piece, and a snap-fit structure. The insulating frame has a cavity structure inside, and is used to embed the busbar. The end of the busbar is located in the cavity structure. The insulating frame has a mounting hole that communicates with the cavity structure. The limiting locking piece is located in the cavity structure and is rotatably mounted on a side wall forming the mounting hole. The insulating frame also has an open end that communicates with the cavity structure. The open end is used to allow copper wire to be inserted into the cavity structure. The copper wire is located between the limiting locking piece and the busbar. The snap-fit structure is inserted into the mounting hole to drive the limiting locking piece to rotate toward the busbar. When the snap-fit structure is inserted into the cavity structure, it drives the limiting locking piece to rotate toward the busbar, thereby connecting the copper wire and the busbar. Therefore, when connecting the copper wire and the busbar, no dedicated clamping equipment is required, and the operation is simple and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a busbar connection structure and a motor. Background Art

[0002] Industrially produced concentrated-winding brushless motors include stator winding coils, which typically consist of multiple single-circuit coils. The copper wires at each end of the single-circuit coils are connected to busbars on the motor's insulation frame, forming the stator winding coils in parallel. However, connecting the copper wires to the busbars requires specialized clamping equipment, a complex and inconvenient process. Summary of the Invention

[0003] The problem solved by the present invention is how to improve the working efficiency of connecting the copper wire of the coil with the busbar of the motor.

[0004] To solve the above problems, the present invention provides a busbar connection structure, which includes an insulating frame, a limiting locking piece and a snap structure. A cavity structure is provided inside the insulating frame, the insulating frame is used to embed the busbar, and the end of the busbar is located in the cavity structure. The insulating frame is provided with a mounting hole, and the mounting hole is connected to the cavity structure. The limiting locking piece is located in the cavity structure, and the limiting locking piece is rotatably installed on the side wall forming the mounting hole. The insulating frame is also provided with an open end connected to the cavity structure, the open end is used for copper wire to be inserted into the cavity structure, and the copper wire is located between the limiting locking piece and the busbar. The snap structure is used to be inserted into the mounting hole to drive the limiting locking piece to rotate toward the direction close to the busbar.

[0005] The technical effect of the present invention is that when the insulating frame is injection molded, the busbar can be embedded in the interior of the insulating frame, and the end of the busbar can be located in the cavity structure of the insulating frame. For example, the end of the busbar can be located on the inner side wall of the cavity structure. When the copper wire and the busbar need to be connected, the copper wire can be extended into the cavity structure from the open end, and the copper wire is located between the limiting locking piece and the busbar, and then the snap structure is inserted into the cavity structure from the mounting hole. In the process of the snap structure extending into the cavity structure, the limiting locking piece will be squeezed, thereby driving the limiting locking piece to rotate toward the direction close to the busbar, so that the limiting locking piece pushes the copper wire toward the direction close to the busbar, and the limiting locking piece and the inner side wall of the cavity structure can clamp the copper wire and the busbar, so that the copper wire and the busbar are connected. Therefore, the above structure only needs to insert the snap structure into the mounting hole to connect the copper wire and the busbar, and does not require special clamping equipment. The operation is simple and efficient.

[0006] Preferably, the snap-on structure is made of elastic material, and the snap-on structure includes a snap-on body and an extrusion portion, the extrusion portion is connected to one end of the snap-on body, and when the extrusion portion is inserted into the cavity structure, the extrusion portion is used to contact the limiting locking plate.

[0007] Preferably, the snap-fit structure also includes a limiting portion, which is connected to one end of the snap-fit body away from the extrusion portion, and the circumferential size of the limiting portion is larger than the size of the mounting hole. When the extrusion portion is inserted into the cavity structure, the limiting portion is used to abut against the outer wall of the insulating frame.

[0008] Preferably, the extrusion portion includes an extrusion ridge, one end of which is connected to the buckle body, the circumferential dimension of the connection between the extrusion ridge and the buckle body is larger than the dimension of the mounting hole, and the circumferential dimension of the extrusion ridge gradually decreases in the direction away from the buckle body.

[0009] Preferably, the extrusion part also includes a limiting ratchet, one end of the limiting ratchet is connected to the end of the extrusion ratchet away from the buckle body, the circumferential size of the limiting ratchet gradually decreases in the direction away from the extrusion ratchet, and the limiting ratchet is provided with a planar structure at the connection with the extrusion ratchet, and when the extrusion part is inserted into the cavity structure, the planar structure is used to abut against the end face of the limiting locking plate.

[0010] Preferably, the open end is provided with a guide structure, and the guide structure is used for allowing the copper wire to be inserted into the cavity structure and guiding the copper wire to be inserted between the busbar and the limiting locking piece.

[0011] Preferably, the insulating frame is provided with an assembly boss, the cavity structure is located inside the assembly boss, and the mounting hole is located on the end surface of the assembly boss.

[0012] Preferably, one end of the limiting locking piece is connected to the edge of the mounting hole, and the limiting locking piece is close to one end of the mounting hole, and the wall thickness of the limiting locking piece gradually becomes thinner towards the mounting hole.

[0013] The present invention also provides a motor, which includes a stator core winding and a busbar connection structure as described above, wherein the busbar connection structure is installed on the stator core winding and is used to connect the busbar to the copper wire of the stator core winding.

[0014] The motor of the present invention has the same beneficial effects as the busbar connection structure, which will not be described in detail here.

[0015] Preferably, the insulating frame of the busbar connection structure is provided with a hook, and the stator core winding is provided with a slot, and the hook is used to cooperate with the slot in a limiting manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a busbar connection structure provided by an embodiment of the present invention installed on a stator core winding;

[0017] Figure 2 A schematic structural diagram of a buckle structure provided in an embodiment of the present invention;

[0018] Figure 3 A bottom view of the insulating frame provided in an embodiment of the present invention;

[0019] Figure 4 A top view of an insulating frame provided in an embodiment of the present invention;

[0020] Figure 5 A cross-sectional view of the insulating frame and stator core winding provided by an embodiment of the present invention from a first perspective;

[0021] Figure 6 A cross-sectional view from a second perspective of the insulating frame and stator core winding provided in an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Insulating frame; 2. Limiting locking plate; 3. Buckle structure; 31. Buckle body; 32. Extrusion part; 321. Extrusion ridge; 322. Limiting ridge; 33. Limiting part; 4. Busbar; 5. Mounting hole; 6. Open end; 61. Guide structure; 7. Copper wire; 8. Assembly boss; 9. Stator core winding; 10. Hook; 11. Slot. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be practiced in an order other than that illustrated or described herein.

[0026] See also Figure 1 、 Figure 5 and Figure 6As shown, a busbar connection structure according to an embodiment of the present invention includes an insulating frame 1, a limiting locking piece 2 and a snap-fit structure 3. A cavity structure is provided inside the insulating frame 1, and the insulating frame 1 is used to embed the busbar 4, and the end of the busbar 4 is located in the cavity structure. The insulating frame 1 is provided with a mounting hole 5, and the mounting hole 5 is connected to the cavity structure. The limiting locking piece 2 is located in the cavity structure, and the limiting locking piece 2 is rotatably installed on the side wall forming the mounting hole 5. The insulating frame 1 is also provided with an open end 6 connected to the cavity structure, and the open end 6 is used for inserting a copper wire 7 into the cavity structure, and the copper wire 7 is located between the limiting locking piece 2 and the busbar 4. The snap-fit structure 3 is used to be inserted into the mounting hole 5 to drive the limiting locking piece 2 to rotate toward the direction close to the busbar 4.

[0027] Specifically, the insulating frame 1 can be made by plastic injection molding, for example, using a blend of PA66 and glass fiber, which imparts a certain degree of elasticity and good mechanical properties. During injection molding of the insulating frame 1, a cavity structure can be formed within the insulating frame 1. The busbar 4 can also be embedded within the insulating frame 1, with the ends of the busbar 4 positioned within the cavity structure. In this embodiment, the ends of the busbar 4 are metal sheets that can be attached to the inner sidewalls of the cavity structure.

[0028] The insulating frame 1 may further include a mounting hole 5, which may communicate with the cavity structure. The inner sidewall where the mounting hole 5 is located may be adjacent to the inner sidewall where the metal sheet is located. The position-limiting locking piece 2 may be located within the cavity structure and rotatably mounted on the inner sidewall where the mounting hole 5 is located. Preferably, the position-limiting locking piece 2 is rotatably mounted to the edge of the mounting hole 5.

[0029] In this embodiment, the mounting hole 5 is in the shape of a square hole, the position-limiting locking piece 2 is a plate-like structure, and the width of the position-limiting locking piece 2 is the same as the width of the square hole. One end of the position-limiting locking piece 2 is rotatably mounted at the edge of the mounting hole 5. In other embodiments, one end of the position-limiting locking piece 2 can be rotatably mounted at a position a certain distance from the mounting hole 5. However, it is necessary to ensure that when the buckle structure 3 is inserted into the mounting hole 5, the buckle structure 3 can squeeze the position-limiting locking piece 2 to rotate in a direction close to the busbar 4, and the position-limiting locking piece 2 can clamp the busbar 4 and the copper wire 7.

[0030] The insulating frame 1 can also be provided with an open end 6 connected to the cavity structure. In this embodiment, the open end 6 and the mounting hole 5 are respectively located on opposite sides of the insulating frame 1, and the open end 6 is arranged opposite the mounting hole 5. The open end 6 can be used for inserting the copper wire 7 into the cavity structure, and when the copper wire 7 is inserted into the cavity structure, the copper wire 7 is located in the area between the limiting locking plate 2 and the busbar 4.

[0031] When it is necessary to connect the copper wire 7 and the busbar 4, the copper wire 7 can be extended into the cavity structure from the open end 6, and then the snap structure 3 can be inserted into the cavity structure from the mounting hole 5. In the process of the snap structure 3 extending into the cavity structure, the limiting locking piece 2 will be squeezed, thereby driving the limiting locking piece 2 to rotate toward the direction close to the busbar 4, so that the limiting locking piece 2 pushes the copper wire 7 toward the direction close to the busbar 4. The limiting locking piece 2 and the inner side wall of the cavity structure can clamp the copper wire 7 and the busbar 4, so that the copper wire 7 and the busbar 4 are connected. Therefore, the above structure only needs to insert the snap structure 3 into the mounting hole 5 to connect the copper wire 7 and the busbar 4. No special clamping equipment is required, and the operation is simple.

[0032] In this embodiment, busbars 4 are respectively attached to the two opposite inner walls of the cavity structure, and two limiting locking pieces 2 are rotatably installed in the cavity structure, and the two limiting locking pieces 2 are respectively located on the opposite sides of the mounting hole 5. The two limiting locking pieces 2 are respectively arranged corresponding to the two busbars 4. When the snap-fit structure 3 is inserted into the cavity structure, the snap-fit structure 3 can drive the two limiting locking pieces 2 to rotate toward the corresponding busbars 4, so that the two limiting locking pieces 2 respectively connect the two busbars 4 with the corresponding copper wires 7.

[0033] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments, the snap structure 3 is made of elastic material, and the snap structure 3 includes a snap body 31 and an extrusion portion 32, the extrusion portion 32 is connected to one end of the snap body 31, and when the extrusion portion 32 is inserted into the cavity structure, the extrusion portion 32 is used to contact the limiting locking plate 2.

[0034] Specifically, the snap-fit structure 3 can be made of an elastic material, such as PA66 plastic, so that the snap-fit structure 3 has good elasticity, which facilitates the insertion of the snap-fit structure 3 into the mounting hole 5. The snap-fit structure 3 can include a snap-fit body 31 and an extrusion portion 32, and one end of the extrusion portion 32 can be connected to one end of the snap-fit body 31. In this embodiment, the circumferential size of the extrusion portion 32 can be larger than the size of the mounting hole 5, and the limiting locking piece 2 can be rotatably mounted on the edge of the mounting hole 5. When the extrusion portion 32 is inserted into the mounting hole 5 and extends into the cavity structure, the extrusion portion 32 can be used to contact the limiting locking piece 2, and the extrusion portion 32 can drive the limiting locking piece 2 to rotate in a direction close to the busbar 4, so that the copper wire 7 and the busbar 4 can be easily connected.

[0035] See also Figure 1 、 Figure 2 and Figure 5As shown, in some embodiments, the snap-fit structure 3 also includes a limiting portion 33, which is connected to one end of the snap-fit body 31 away from the extrusion portion 32, and the circumferential size of the limiting portion 33 is larger than the size of the mounting hole 5. When the extrusion portion 32 is inserted into the cavity structure, the limiting portion 33 is used to abut against the outer wall of the insulating frame 1.

[0036] Specifically, the buckle structure 3 may further include a limiting portion 33, one end of which may be connected to an end of the buckle body 31 away from the extrusion portion 32. In this embodiment, the limiting portion 33 may be shaped like a circular button, and the circumferential dimension of the limiting portion 33 may be larger than the dimension of the mounting hole 5, while the circumferential dimension of the buckle body 31 may be smaller than the dimension of the mounting hole 5. When the extrusion portion 32 is inserted into the cavity structure, the end surface of the limiting portion 33 where it connects to the buckle body 31 may abut against the outer wall of the insulating frame 1. The limiting portion 33 prevents the buckle structure 3 from being fully inserted into the cavity structure, allowing the extrusion portion 32 to always maintain the state of squeezing the limiting locking piece 2.

[0037] See also Figure 1 、 Figure 2 and Figure 5 As shown, in some embodiments, the extrusion portion 32 includes an extrusion ridge 321, one end of the extrusion ridge 321 is connected to the buckle body 31, the circumferential dimension of the connection between the extrusion ridge 321 and the buckle body 31 is larger than the dimension of the mounting hole 5, and the circumferential dimension of the extrusion ridge 321 gradually decreases in the direction away from the buckle body 31.

[0038] Specifically, the extrusion portion 32 may include an extrusion ridge 321, one end of which may be connected to the end of the buckle body 31 away from the limiting portion 33, and the circumferential dimension of the connection between the extrusion ridge 321 and the buckle body 31 may be larger than the dimension of the mounting hole 5, and the circumferential dimension of the extrusion ridge 321 may gradually decrease in the direction away from the buckle body 31, thereby forming a structure similar to a frustum, so that the side of the extrusion ridge 321 may form an arc surface structure. In this embodiment, the circumferential dimension of the extrusion ridge 321 at the farthest distance from the buckle body 31 is less than or equal to the dimension of the mounting hole 5.

[0039] In the process of inserting the extrusion part 32 into the cavity structure, the part with the smallest circumferential size of the extrusion part 32 is first extended into the cavity structure, and then the extrusion part 32 is pressed into the cavity structure little by little. The extrusion part 32 can be easily inserted into the cavity structure, and in the process of pressing the extrusion part 32, the extrusion part 32 will be compressed and deformed. After the extrusion part 32 enters the cavity structure, the extrusion part 32 continues to maintain a compressed state, thereby squeezing the limiting locking piece 2, driving the limiting locking piece 2 to clamp the copper wire 7 and the busbar 4.

[0040] See also Figure 1 、 Figure 2 and Figure 5 As shown, in some embodiments, the extrusion portion 32 also includes a limiting ridge 322, one end of the limiting ridge 322 is connected to the end of the extrusion ridge 321 away from the buckle body 31, and the circumferential size of the limiting ridge 322 gradually decreases in the direction away from the extrusion ridge 321. The limiting ridge 322 is provided with a planar structure at the connection with the extrusion ridge 321. When the extrusion portion 32 is inserted into the cavity structure, the planar structure is used to abut against the end face of the limiting locking plate 2.

[0041] Specifically, the extrusion portion 32 may further include a limiting ridge 322, one end of which may be connected to the end of the extrusion ridge 321 away from the buckle body 31, and the circumferential size of the limiting ridge 322 may gradually decrease in the direction away from the extrusion ridge 321. In this embodiment, the limiting ridge 322 may form a cone-like structure, with the tip of the cone facing in the direction away from the extrusion ridge 321, and the bottom of the cone connected to the extrusion ridge 321, that is, the limiting ridge 322 is provided with a planar structure at the connection with the extrusion ridge 321.

[0042] In this embodiment, the circumferential dimension of the connection between the limiting ridge 322 and the extrusion ridge 321 can also be larger than the dimension of the mounting hole 5. When the extrusion portion 32 is inserted into the cavity structure, the limiting locking piece 2 can be perpendicular to the inner side wall of the mounting hole provided in the cavity structure, and the end face of the limiting locking piece 2 can be abutted against the plane structure, so that the limiting locking piece 2 is clamped between the plane structure and the end face of the limiting portion 33 close to the buckle body 31, so that the buckle structure 3 cannot be pulled out of the cavity structure, so that the limiting locking piece 2 can firmly clamp the busbar 4 and the copper wire 7.

[0043] See also Figure 1 and Figure 3 As shown, in some embodiments, the open end 6 is provided with a guide structure 61, and the guide structure 61 is used for allowing the copper wire 7 to be inserted into the cavity structure and guiding the copper wire 7 to be inserted between the busbar 4 and the limiting locking piece 2.

[0044] Specifically, the open end 6 may be provided with a guide structure 61. In this embodiment, the guide structure 61 includes a guide opening, which is provided directly below the area between the busbar 4 and the limiting locking piece 2. The diameter of the guide opening is larger than the diameter of the copper wire 7. In other embodiments, the guide structure 61 may include two guide openings, each corresponding to the two limiting locking pieces 2.

[0045] When the copper wire 7 is inserted into the guide structure 61, the guide structure 61 can guide the copper wire 7 to be inserted into the area between the busbar 4 and the limiting locking piece 2, which can improve the assembly accuracy of the copper wire 7 and further simplify the connection process between the copper wire 7 and the busbar 4.

[0046] See also Figure 1 As shown, in some embodiments, the insulating frame 1 is provided with an assembly boss 8 , the cavity structure is located inside the assembly boss 8 , and the mounting hole 5 is located on the end surface of the assembly boss 8 .

[0047] Specifically, the insulating frame 1 can be provided with a plurality of assembly bosses 8, each assembly boss 8 can be provided with a cavity structure inside, and the end face of each assembly boss 8 can be provided with a mounting hole 5 corresponding to the cavity structure. By providing the assembly boss 8, it is convenient to provide a cavity structure inside the insulating frame 1, thereby reducing the material required for injection molding of the insulating frame 1.

[0048] See also Figure 1 and Figure 5 As shown, in some embodiments, one end of the limiting locking plate 2 is connected to the edge of the mounting hole 5, and the limiting locking plate 2 is close to one end of the mounting hole 5, and the wall thickness of the limiting locking plate 2 gradually becomes thinner towards the mounting hole 5.

[0049] Specifically, one end of the limiting locking piece 2 can be connected to the inner wall of the cavity structure, and one end of the limiting locking piece 2 is connected to the edge of the mounting hole 5. At the connection between the limiting locking piece 2 and the cavity structure, and at one end of the limiting locking piece 2 close to the mounting hole 5, the wall thickness of the limiting locking piece 2 can gradually become thinner toward the mounting hole 5, so that a hinge-like connection structure can be formed at the connection between the limiting locking piece 2 and the cavity structure, so that the limiting locking piece 2 can be flipped relative to the inner wall of the cavity structure, thereby eliminating the need to use other hinges to hinge the limiting locking piece 2 to the inner side of the cavity structure, thereby reducing the cost of manufacturing the insulating frame 1, and the limiting locking piece 2 can also be made by integral molding with the insulating frame 1.

[0050] See also Figure 1 As shown, a motor according to another embodiment of the present invention includes a stator core winding 9 and a busbar connection structure as described above, wherein the busbar connection structure is installed on the stator core winding 9, and the busbar connection structure is used to connect the busbar 4 to the copper wire 7 of the stator core winding 9.

[0051] Specifically, the stator core winding 9 may include a lower frame, an iron core sheet and an upper frame. The lower frame is installed at one end of the iron core sheet, and the upper frame is installed at the other end of the iron core sheet, and the copper wire 7 of the iron core sheet extends from the upper frame. The busbar connection structure may include an insulating frame 1 and a snap structure 3. When the insulating frame 1 is installed on the upper frame, the copper wire 7 can be inserted into the cavity structure from the guide structure 61, and the copper wire 7 is located between the limiting locking plate 2 and the busbar 4. Inserting the snap structure 3 into the cavity structure can drive the limiting locking plate 2 to rotate toward the direction close to the busbar 4, clamping the copper wire 7 and the busbar 4, which can facilitate the connection between the copper wire 7 and the busbar 4.

[0052] See also Figure 1 As shown, the insulating frame 1 of the busbar connection structure is provided with a hook 10 , and the stator core winding 9 is provided with a slot 11 , and the hook 10 is used to cooperate with the slot 11 in a limiting manner.

[0053] Specifically, the insulating frame 1 can be provided with a hook 10. In this embodiment, the hook 10 extends radially along the insulating frame 1 and extends outside the insulating frame 1. The end of the hook 10 away from the insulating frame 1 is bent toward the direction close to the stator core winding 9. The upper frame of the stator core winding 9 can be provided with a slot 11.

[0054] When the insulating frame 1 is installed on the upper frame, the hook 10 can be engaged in the slot 11, so that the hook 10 and the slot 11 can limit the rotation of the insulating frame 1 relative to the stator core winding 9. To be more clear, it can prevent the insulating frame 1 from rotating after being assembled to the upper frame, and the assembly accuracy of the insulating frame 1 can be increased.

[0055] Moreover, the hook 10 and the slot 11 can also play a positioning role, that is, when the hook 10 is engaged in the slot 11, the copper wire 7 can be inserted into the guide structure 61, and the copper wire 7 can extend into the area between the busbar 4 and the limiting locking plate 2, which can further improve the assembly accuracy of the copper wire 7.

[0056] Although the present invention is disclosed as above, the scope of protection disclosed by the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A busbar connection structure, characterized in that: The invention comprises an insulating frame (1), a limiting locking piece (2) and a buckle structure (3); a cavity structure is provided inside the insulating frame (1); the insulating frame (1) is used to embed a busbar (4), and the end of the busbar (4) is located in the cavity structure; the insulating frame (1) is provided with a mounting hole (5), the mounting hole (5) is communicated with the cavity structure; the limiting locking piece (2) is located in the cavity structure, and the limiting locking piece (2) is rotatably mounted on a side wall forming the mounting hole (5) The insulating frame (1) is further provided with an open end (6) connected to the cavity structure, the open end (6) is used for inserting the copper wire (7) into the cavity structure, and the copper wire (7) is located between the limiting locking piece (2) and the busbar (4), the buckle structure (3) is used to be inserted into the mounting hole (5) to drive the limiting locking piece (2) to rotate in a direction close to the busbar (4), and the limiting locking piece (2) is used to clamp the busbar (4) and the copper wire (7).

2. The busbar connection structure according to claim 1, characterized in that: The buckle structure (3) is made of elastic material and comprises a buckle body (31) and an extrusion portion (32). The extrusion portion (32) is connected to one end of the buckle body (31). When the extrusion portion (32) is inserted into the cavity structure, the extrusion portion (32) is used to contact the limiting locking piece (2).

3. The busbar connection structure according to claim 2, characterized in that: The buckle structure (3) further comprises a limiting portion (33), the limiting portion (33) being connected to an end of the buckle body (31) away from the extrusion portion (32), and the circumferential dimension of the limiting portion (33) being larger than the dimension of the mounting hole (5), and when the extrusion portion (32) is inserted into the cavity structure, the limiting portion (33) is used to abut against the outer side wall of the insulating frame (1).

4. The busbar connection structure according to claim 2, characterized in that: The extrusion portion (32) comprises an extrusion ridge (321), one end of which is connected to the buckle body (31), the circumferential dimension of the connection between the extrusion ridge (321) and the buckle body (31) being larger than the dimension of the mounting hole (5), and the circumferential dimension of the extrusion ridge (321) gradually decreases in a direction away from the buckle body (31).

5. The busbar connection structure according to claim 4, characterized in that: The extrusion portion (32) further comprises a limiting ratchet (322), one end of which is connected to an end of the extrusion ratchet (321) away from the buckle body (31), the circumferential dimension of the limiting ratchet (322) gradually decreases in a direction away from the extrusion ratchet (321), and the limiting ratchet (322) is provided with a planar structure at the connection with the extrusion ratchet (321), and when the extrusion portion (32) is inserted into the cavity structure, the planar structure is used to abut against the end face of the limiting locking piece (2).

6. The busbar connection structure according to claim 1, characterized in that: The open end (6) is provided with a guide structure (61), and the guide structure (61) is used for allowing the copper wire (7) to be inserted into the cavity structure and guiding the copper wire (7) to be inserted between the busbar (4) and the limiting locking piece (2).

7. The busbar connection structure according to claim 1, characterized in that: The insulating frame (1) is provided with an assembly boss (8), the cavity structure is located inside the assembly boss (8), and the mounting hole (5) is located on the end face of the assembly boss (8).

8. The busbar connection structure according to claim 1, characterized in that: One end of the limiting locking piece (2) is connected to the edge of the mounting hole (5), and the limiting locking piece (2) is close to one end of the mounting hole (5), and the wall thickness of the limiting locking piece (2) gradually becomes thinner in the direction close to the mounting hole (5).

9. A motor, characterized in that: The invention comprises a stator core winding (9) and a busbar connection structure according to any one of claims 1 to 8, wherein the busbar connection structure is installed on the stator core winding (9), and the busbar connection structure is used to connect a busbar (4) to the copper wire (7) of the stator core winding (9).

10. The motor according to claim 9, characterized in that The insulating frame (1) of the busbar connection structure is provided with a hook (10), the stator core winding (9) is provided with a slot (11), and the hook (10) is used for position-limiting cooperation with the slot (11).

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