Wiring structure, stator and motor

Abstract

The present invention provides a wiring structure, a stator, and a motor. The wiring structure includes a first connecting plate, which can be mounted on an end face of the stator. A second connecting plate is disposed on the first connecting plate, which opposes the winding units of the stator. The second connecting plate is provided with a first groove, into which the enameled wires and / or terminal ends of two adjacent winding units on the stator can be snapped. This structure overcomes the prior art defect that the enameled wire ends need to be bent before being welded to the control board, which can easily damage the enameled wire.

Description

Technical Field

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

[0002] At present, high-power DC brushless motors with loads of 20 horsepower and above achieve high-efficiency stator production by winding the stator in blocks into a circular structure. Each winding unit outputs the ends of the enameled wire. The stator of this structure is mostly connected by welding the ends of the enameled wire to the control board, and the control board is fixed to the wound stator. However, during operation, this structure requires the enameled wire ends to be bent when welded to the control board, which can easily damage the enameled wire; the insulation distance of the control board mounting hole is insufficient, the enameled wire ends are poorly soldered, and the wiring is poor, which poses quality risks to the motor and can even cause the motor to burn out. Summary of the Invention

[0003] Therefore, the present invention provides a wiring structure, a stator and a motor, which can overcome the defect in the prior art that the ends of the enameled wires need to be bent when welded to the control board, which easily damages the enameled wires.

[0004] In order to solve the above problems, the present invention provides a wiring structure, which includes:

[0005] A first connecting plate, the first connecting plate can be installed on the end face of the stator, a second connecting plate is provided on the first connecting plate, the second connecting plate is opposite to the winding unit of the stator, and a first groove is provided on the second connecting plate, the enameled wires and / or terminal heads of two adjacent winding units on the stator can be clamped in the first groove.

[0006] In some embodiments, the first connecting plate is cylindrical, and a plurality of second connecting plates are spaced apart on the inner circumferential wall of the first connecting plate along the circumference of the first connecting plate.

[0007] In some embodiments, one end of the first connecting plate is connected to the stator, and the other end is connected to a fourth connecting plate. The fourth connecting plate is provided with a pin hole, and the stator enameled wire is connected to the power line through the pin hole.

[0008] In some embodiments, the fourth connecting plate has a first end and a second end, the first end and the second end are respectively located on both sides of the first connecting plate, the first end is opposite to the second connecting plate, and the pin hole is located on the fourth connecting plate relative to the first end close to the second end, and a pin is provided on the pin hole.

[0009] In some embodiments, a third connecting plate is provided on the first end, the third connecting plate is arranged toward the stator, a second groove is enclosed between the third connecting plate, the second connecting plate and the first connecting plate, and the second groove is opposite to the first groove.

[0010] In some embodiments, one end of the second connecting plate is connected to the first connecting plate, and a fifth connecting plate is provided at the other end. The first connecting plate has a first side surface facing away from the fifth connecting plate, and the fifth connecting plate has a second side surface facing away from the first connecting plate. The fifth connecting plate is arranged toward the stator. A card slot is enclosed between the second connecting plate, the first connecting plate, and the fifth connecting plate, and the card slot can be snapped into the stator.

[0011] In some embodiments, within the projection plane of the longitudinal section of the stator, with the radial extension line of the stator as the X-axis and the radially outward direction as the positive direction of the X-axis, the angle between the normal of the first side surface and the positive direction of the X-axis is (0 to 90°), and the angle between the normal of the second side surface and the positive direction of the X-axis is (90 to 180°).

[0012] In some embodiments, protrusions are provided on the first side surface and the second side surface, and the protrusions are provided close to the stator relative to the second connecting plate.

[0013] The present invention also provides a stator, which includes the connection structure described in any one of the preceding items.

[0014] The present invention also provides a motor, which includes the above-mentioned stator.

[0015] The present invention provides a wiring structure, a stator and a motor, wherein a first connecting plate is installed at the end of the stator, and a second connecting plate is opposite to the winding unit of the stator. The enameled wires and / or terminal heads of two adjacent winding units on the stator can be clamped in the first groove. The enameled wires of the two adjacent winding units are wrapped and then placed with the terminal heads to ensure that the wire heads are neat. When the terminal heads are placed in the first groove, since the second connecting plate is arranged on the first connecting plate, an insulating gap exists between the terminal heads and the end faces of the winding units and the end cover materials, thereby increasing reliability. The enameled wires and / or terminal heads are placed in the first groove without bending or damaging the enameled wires and are easy to operate. The use of the second connecting plate increases additional insulation, thereby improving the insulation performance of the high-power motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a wiring structure according to an embodiment of the present invention;

[0017] Figure 2 A front view of a wiring structure according to an embodiment of the present invention;

[0018] Figure 3 A partial enlarged view of the wiring structure of an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the structure of the third connecting plate in the wiring structure of an embodiment of the present invention;

[0020] Figure 5 A front view of a wiring structure according to another embodiment of the present invention;

[0021] Figure 6 This is a partially enlarged view of a wiring structure according to another embodiment of the present invention.

[0022] The reference numerals indicate:

[0023] 1. First connecting plate; 2. Pin; 3. Protrusion; 4. Winding; 5. Second groove; 6. Pin hole; 7. First groove; 8. Second connecting plate; 9. Third connecting plate; 10. Fourth connecting plate; 11. Fifth connecting plate; 12. Skeleton; 13. Iron core. DETAILED DESCRIPTION

[0024] See also Figures 1 to 6 As shown, according to an embodiment of the present invention, a wiring structure is provided, including: a first connecting plate 1, the first connecting plate 1 can be installed on the end face of the stator, a second connecting plate 8 is provided on the first connecting plate 1, the second connecting plate 8 is opposite to the winding unit of the stator, and a first groove 7 is provided on the second connecting plate 8, and the enameled wires and / or terminal heads of two adjacent winding units on the stator can be clamped in the first groove 7. In this technical solution, the first connecting plate 1 is installed at the end of the stator, and the second connecting plate 8 is opposite to the winding unit of the stator. Preferably, the second connecting plate 8 is opposite to the position between the adjacent winding units of the stator, and the enameled wires and / or terminal heads of two adjacent winding units on the stator can be clamped in the first groove 7. The enameled wires of the two adjacent winding units are wrapped and placed on the terminal heads to ensure that the wire heads are neat. When the terminal heads are placed in the first groove 7, since the second connecting plate 8 is arranged on the first connecting plate 1, an insulating gap exists between the terminal heads and the end faces of the winding units and the end cover materials, thereby increasing reliability. The enameled wires and / or terminal heads are placed in the first groove 7 without bending or damaging the enameled wires and are easy to operate. The use of the second connecting plate 8 increases additional insulation, which makes the insulation performance of high-power motors better. Figure 2 As shown, the stator is composed of a frame 12, an iron core 13 and a winding 4. The iron core 13 is sleeved on the frame 12, and the winding 4 is wound on the frame 12 to form a winding unit.

[0025] The wiring structure of the present invention is used in conjunction with a wound stator. The ends of the wound stator wires are directly wrapped and placed in the first groove 7 of the wiring structure. This prevents the enameled wires from being bent or damaged, and is easy to operate. It also eliminates the quality risks of insufficient insulation distance and poor soldering. The use of the protective cover increases additional insulation, thereby improving the insulation performance of the high-power motor. The wiring structure of the present invention is a double-groove annular structure, with a first groove 7 and a second groove 5 provided between the upper and lower end surfaces, which is convenient for placing the wiring ends after wrapping the two enameled wires of the winding stator, ensuring that the wire ends are not scattered, and there is additional insulation between the winding end face and the end cover material, thereby increasing reliability; the lower end face of the wiring structure is designed as a card slot, and the outer surface is designed as an outward-expanded inclined surface or a round surface with a protrusion. The outward-expanded inclined surface type can be directly inserted into the skeleton, and the protective cover and the skeleton are tightly connected through the outward expansion force. The protrusion type can embed the protrusion into the skeleton, and the concave and convex embedding is tight. The groove is placed on the winding end face to block the insulation of the winding and the upper surface material, thereby increasing reliability; the upper end face is a plane with multiple pin holes 6, which is in contact with the skeleton plane and can be welded tightly through the pin holes without loosening, thereby making the stator wiring easy and avoiding quality risks.

[0026] In some embodiments, the first connecting plate 1 is cylindrical, and a plurality of second connecting plates 8 are spaced apart on the inner peripheral wall of the first connecting plate 1 along the circumference of the first connecting plate 1. Figure 1 As shown, along the circumference of the first connecting plate 1, a plurality of second connecting plates 8 are arranged at intervals on the inner circumferential wall of the first connecting plate 1, making the wiring structure of the present invention more convenient to install and use, and the enameled wire and / or terminal of the winding unit are placed in the first groove 7 through the intervals between adjacent second connecting plates 8. The first groove 7 is arranged along the circumference of the first connecting plate 1, and at least three first grooves 7 are provided, so that the bridge wire of the enameled wire passes just on the second connecting plate 8, avoiding bending and damage of the enameled wire.

[0027] In some embodiments, one end of the first connecting plate 1 is connected to the stator, and the other end is connected to the fourth connecting plate 10. The fourth connecting plate 10 is provided with a pin hole 6, and the stator enameled wire is connected to the power line through the pin hole 6. In this technical solution, see Figure 2 As shown, the first end faces the second connecting plate 8, and the pinhole 6 faces the second connecting plate 8. When the first connecting plate 1 is cylindrical, the four connecting plates 10 are annular. Multiple pinholes 6 are spaced apart along the circumference of the four connecting plates 10. When connecting the power cord and enameled wire of each winding unit, they only need to be connected through the pins 2 on the pinholes 6, without having to be wound around the stator. At least four holes between the pinholes 6 and the pinholes of the frame are located in the same position.

[0028] In some embodiments, the fourth connecting plate 10 has a first end and a second end, the first end and the second end are respectively located on both sides of the first connecting plate 1, the first end is opposite to the second connecting plate 8, and the pin hole 6 is located on the fourth connecting plate 10 relative to the first end and close to the second end, and the pin hole 6 is provided with a pin 2. In this technical solution, see Figure 6 As shown, the fourth connecting plate 10 has a first end and a second end, the first end and the second end are respectively located on both sides of the first connecting plate 1, the first end is opposite to the second connecting plate 8, and the pin hole 6 is located on the fourth connecting plate 10 relative to the first end close to the second end, so that the input end and the output end of the winding unit are respectively located on both sides of the first connecting plate 1, avoiding mutual interference between the input end and the output end, placing the enameled wire lead at the pin 2, and then placing the power cord at the pin 2, and welding it, thereby achieving the effect of fixing the wiring structure and improving the stability of the wiring structure.

[0029] In some embodiments, a third connecting plate 9 is provided on the first end, and the third connecting plate 9 is provided toward the stator. A second groove 5 is enclosed between the third connecting plate 9, the second connecting plate 8 and the first connecting plate 1, and the second groove 5 is opposite to the first groove 7. In this technical solution, see Figure 3 As shown, the second groove 5 can limit the enameled wire in the first groove 7, avoiding the situation where the enameled wire in the first groove 7 is too much and is squeezed out of the first groove 7 and adjusted on the stator, thereby affecting the winding unit. There is a gap between the third connecting plate 9 and the second connecting plate 8 to facilitate the removal and installation of the enameled wire and to facilitate maintenance.

[0030] In some embodiments, see Figure 4 As shown, one end of the second connecting plate 8 is connected to the first connecting plate 1, and the other end is provided with a fifth connecting plate 11. The first connecting plate 1 has a first side facing away from the fifth connecting plate 11, and the fifth connecting plate 11 has a second side facing away from the first connecting plate 1. The fifth connecting plate 11 is arranged toward the stator. A card slot is enclosed between the second connecting plate 8, the first connecting plate 1, and the fifth connecting plate 11, and the card slot can be engaged with the stator. In this technical solution, when the first connecting plate 1 is cylindrical, the fifth connecting plate 11 is also cylindrical, and the second connecting plate 8 is annular. A card slot is enclosed between the second connecting plate 8, the first connecting plate 1, and the fifth connecting plate 11, and the card slot can be engaged with the stator. Specifically, the winding unit on the stator can be engaged through the card slot, so that the wiring structure is installed on the stator. The second connecting plate 8 can also insulate the winding unit from the enameled wire in the first groove 7.

[0031] In some embodiments, see Figure 6As shown, in the projection surface of the longitudinal section of the stator, with the radial extension line of the stator as the X-axis and the radially outward direction as the positive direction of the X-axis, the angle between the normal of the first side surface and the positive direction of the X-axis is 0 to 90 degrees, and the angle between the normal of the second side surface and the positive direction of the X-axis is 90 to 180 degrees. In this technical solution, the angle between the normal of the first side surface and the positive direction of the X-axis is 0 to 90 degrees, and the angle between the normal of the second side surface and the positive direction of the X-axis is 90 to 180 degrees, so that the second side surface and the first side surface are arranged in an eight-shaped shape. Specifically, the second side surface and the first side surface are outward-expanding inclined surfaces. The first connecting plate 1 and the fifth connecting plate 11 are connected to the winding stator frame through the second side surface and the first side surface. The expanded inclined surface type effectively utilizes the force-bearing outward expansion reinforcement frame and the protective cover to be tightly connected, so that the protective cover is not easy to fall off, and effectively stabilizes the wiring structure.

[0032] In some embodiments, protrusions 3 are provided on the first side surface and the second side surface, and the protrusions 3 are provided close to the stator relative to the second connecting plate 8. Figure 3 As shown, when the first connecting plate 1 and the fifth connecting plate 11 are cylindrical, the first side surface and the second side surface are circular surfaces with protrusions 3. The protrusions 3 can be embedded in the skeleton by the convex and concave embedding with the skeleton 10, thereby increasing the reliability of the wiring structure.

[0033] In the existing technology, a high-power DC brushless motor is used for loads of 20 HP and above. The DC brushless motor consists of a stator and a rotor. The stator is composed of an even number of winding stators and a protective cover. Each winding stator outputs two enameled wire ends, which are connected head to tail through a certain connection method. Three power line impressions and a common terminal are output to achieve high-power and stable operation of the motor.

[0034] The existing technology uses winding stators and control boards to connect, which is prone to bending and damaging the wire skin when the winding stator enameled wire ends are welded, cold welding, and insufficient insulation distance of the control board power lead welding points, resulting in stator breakdown when the motor is powered on. The present invention provides a wiring structure to replace the control board. The wiring structure is a circular ring structure with grooves as a whole, including an upper end face, a first groove 7 and a second groove 5 structural design, wherein the bottom surface of the first groove 7 is designed to have an arc surface and a plane with a bridge wire, forming a second groove 5 cavity groove with the upper end face, which is convenient for placing the bridge wire and connecting the wire ends, and is not easy to be exposed, effectively isolating the wire ends from the enameled wires and the wire ends from the end cover surface, thereby increasing the insulation effect; the bottom of the wiring structure is designed as a card slot structure, the card slot is in contact with the end face of the winding 4, effectively isolating the wire ends from the end face of the winding, and the periphery of the card slot is designed to be an outward-expanding inclined surface or The one with a raised annular surface is connected to the winding stator frame. The outward-expanded inclined surface type effectively utilizes the force to expand outward to strengthen the tight connection between the frame and the wiring structure. The raised block type forms a concave-convex fit with the inner surface of the frame 12, making the wiring structure not easy to fall off, effectively stabilizing the wiring structure; the upper surface of the wiring structure is designed as an annular plane with multiple pin holes 6, which fits with the top of the frame 12, and can be fastened to the frame by pin welding; this wiring structure not only solves the placement problem of the winding stator bridge wire and the connecting wire head, but also strengthens the stator insulation and improves reliability.

[0035] When wiring the stator using this wiring structure, the head and tail wire ends between the two windings of the stator are directly wrapped with seamless tape, and the wire ends are placed in the middle groove of the wiring structure. The three-phase tail wire ends are placed in the same way when connecting. This can ensure that the wire ends are tightly connected and not loose, and the wiring structure is isolated and the insulation strength is enhanced. The three-phase head leads and power lines are fixed to the pin holes of the wiring structure and the frame. This type of wiring method eliminates quality problems such as cold soldering, wire damage and insufficient insulation distance similar to the control board connection method.

[0036] The present invention also provides a stator, which includes the above-mentioned connection structure.

[0037] The present invention also provides a motor, which includes the above-mentioned stator.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A wiring structure, characterized in that: include: a first connecting plate (1), the first connecting plate (1) being mountable on an end face of a stator, a second connecting plate (8) being disposed on the first connecting plate (1), the second connecting plate (8) being opposite to a winding unit of the stator, a first groove (7) being disposed on the second connecting plate (8), and enameled wires and / or terminal ends of two adjacent winding units on the stator being capable of being snapped into the first groove (7); One end of the first connecting plate (1) is connected to the stator, and the other end is connected to a fourth connecting plate (10); a pin hole (6) is provided on the fourth connecting plate (10), and the stator enameled wire and the power line are connected through the pin hole (6); The fourth connecting plate (10) has a first end and a second end, the first end and the second end are respectively located on both sides of the first connecting plate (1), the first end is opposite to the second connecting plate (8), and the pin hole (6) is located on the fourth connecting plate (10) near the second end relative to the first end, and the pin hole (6) is provided with a pin (2); A third connecting plate (9) is provided on the first end, and the third connecting plate (9) is arranged toward the stator. A second groove (5) is enclosed between the third connecting plate (9), the second connecting plate (8) and the first connecting plate (1), and the second groove (5) is opposite to the first groove (7).

2. The wiring structure according to claim 1, wherein: The first connecting plate (1) is cylindrical, and a plurality of second connecting plates (8) are arranged at intervals on the inner peripheral wall of the first connecting plate (1) along the circumference of the first connecting plate (1).

3. The wiring structure according to claim 1, wherein: One end of the second connecting plate (8) is connected to the first connecting plate (1), and the other end is provided with a fifth connecting plate (11), the first connecting plate (1) has a first side surface facing away from the fifth connecting plate (11), the fifth connecting plate (11) has a second side surface facing away from the first connecting plate (1), the fifth connecting plate (11) is arranged toward the stator, and a slot is enclosed between the second connecting plate (8), the first connecting plate (1) and the fifth connecting plate (11), and the slot can be engaged with the stator.

4. The wiring structure according to claim 3, wherein: In the projection plane of the longitudinal section of the stator, with the radial extension line of the stator as the X-axis and the radially outward direction as the positive direction of the X-axis, the angle between the normal line of the first side surface and the positive direction of the X-axis is 0-90°, and the angle between the normal line of the second side surface and the positive direction of the X-axis is 90-180°.

5. The wiring structure according to claim 3, wherein: Protrusions (3) are provided on the first side surface and the second side surface, and the protrusions (3) are provided close to the stator relative to the second connecting plate (8).

6. A stator, characterized in that: The invention comprises the wiring structure according to any one of claims 1 to 5.

7. A motor, characterized in that: Comprising the stator according to claim 6.

Images