Wiring terminal assembly, skeleton structure, stator assembly and motor

Abstract

The invention provides a wiring terminal assembly, a skeleton structure, a stator assembly and a motor, the wiring terminal assembly comprises a first conductive wiring terminal and a compression protection part, the first conductive wiring terminal is provided with a first puncturing part, the first puncturing part is used for winding a lead of a winding, the compression protection part is assembled on the first conductive wiring terminal, and the first puncturing part is used for puncturing the lead of the winding. The pressing protection part presses the lead wound on the first puncturing part so that the lead can be punctured by the first puncturing part. According to the invention, when the wiring terminal assembly is applied to the motor, the lead of the winding wound on the first puncturing part can be punctured by the puncturing part under the compression of the compression protection part, so that the lead is connected with the first conductive wiring terminal. In this way, it is not necessary to grind off the enameled leather of the enameled wire and then wind the peeled enameled wire on the wiring terminal for connection like traditional manual enameled leather grinding, and it is also not necessary to wind a depainting-free direct welding type enameled wire with high cost on the wiring terminal for connection.

Description

Technical Field

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

[0002] Brushless DC motors have the advantages of good mechanical properties, wide speed regulation range, strong overload capacity and high working efficiency, and can be widely used in fan loads of household and commercial appliances. However, there are still problems with the stator structure of brushless DC motors. That is, the winding enameled wire on the stator needs to remove the insulation layer before it can be connected to the power line. The traditional manual polishing of the paint is time-consuming and complicated, and the cost of using paint-free direct welding enameled wire is high. Summary of the invention

[0003] Therefore, the present invention provides a terminal assembly that can solve the technical problems that the winding enameled wire of the DC brushless motor needs to remove the insulation layer before it can be connected to the power line, the traditional manual polishing of the paint is time-consuming and complicated, and the use of paint-free direct welding enameled wire is costly.

[0004] In order to solve the above problems, the present invention provides a terminal assembly, including a first conductive terminal and a compression protection component, the first conductive terminal having a first piercing portion, the first piercing portion being used for winding a lead of a winding, the compression protection component being assembled on the first conductive terminal, the compression protection component being able to compress the lead wound on the first piercing portion so that the lead is pierced by the first piercing portion.

[0005] In some embodiments, the first piercing portion includes at least two first sawtooth structures, and the first sawtooth structures are sequentially spaced apart along a height direction of the first conductive terminal.

[0006] In some embodiments, the first conductive terminal includes a first top wall and two first side walls connected on both sides of the first top wall, at least one of the first side walls is provided with the first piercing portion, the first conductive terminal is assembled on a first supporting component, the first supporting component includes a first plug-in portion, the first plug-in portion is inserted into a space enclosed by the first top wall and the two first side walls to form a support for the first conductive terminal, and the first piercing portion is located on the outside of the first plug-in portion.

[0007] In some embodiments, the first conductive terminal further has a wiring portion, which is located at the top of the first conductive terminal and is used to connect to a power line.

[0008] In some embodiments, the first conductive terminal further has a first limiting portion, and along the height direction of the first conductive terminal, the first limiting portion is located below the first piercing portion, and the first limiting portion and the first piercing portion are spaced apart, and the first turn of the lead wire is clamped between the first limiting portion and the first piercing portion.

[0009] In some embodiments, the compression protection component has a compression protection arm, which is located outside the first puncture part and exerts compression on the lead.

[0010] In some embodiments, the free end of the compression protection arm forms a hook claw, and the hook claw extends into the space formed between the first limiting portion and the first piercing portion and abuts against the first turn wire.

[0011] The present invention also provides a frame structure, comprising a first insulating frame and the aforementioned terminal assembly, wherein the terminal assembly is assembled on the first insulating frame.

[0012] In some embodiments, the first insulating skeleton includes an outer annular wall, on which are constructed first mounting grooves and first insertion holes that are spaced apart from each other, the first mounting grooves and the first insertion holes both pass through the outer annular wall, the first supporting component also includes a first extension arm connected to a side surface of the first plug-in portion, the first extension arm is close to a bottom of the first plug-in portion, and a first mounting column is formed on the first extension arm, the first plug-in portion passes through the first mounting groove from the back side of the outer annular wall, the first mounting column is inserted into the first insertion hole, and the first extension arm is on the back side of the outer annular wall.

[0013] In some embodiments, a first accommodating groove is constructed on the back side of the outer annular wall, the first mounting groove is connected to the first jack through the first accommodating groove, and the first extension arm is located in the first accommodating groove; and / or, the number of the terminal assemblies is three, and the three terminal assemblies are all assembled on the first insulating skeleton, and the first insulating skeleton also includes a plurality of inner guard teeth located radially inside the outer annular wall, and each of the inner guard teeth is distributed at intervals along the circumference of the outer annular wall, and the installation positions of the three terminal assemblies correspond to the positions of three adjacent inner guard teeth, respectively.

[0014] In some embodiments, a common terminal assembly is also assembled on the first insulating frame, and the common terminal assembly includes two second conductive terminals distributed at intervals, and the two second conductive terminals both have a second puncture portion, and the tail wire of the winding is wound around the two second puncture portions in a cross winding manner.

[0015] In some embodiments, the common terminal assembly and the connection terminal assembly are arranged on the first insulating frame at an angle of 180°.

[0016] In some embodiments, the second conductive terminal includes a second top wall and two second side walls connected on both sides of the second top wall, at least one of the second side walls is provided with the second piercing portion, the second conductive terminal is assembled on a second supporting component, the second supporting component includes two second plug-in portions distributed at intervals, the second plug-in portion is inserted in the space enclosed by the second top wall and the two second side walls to form a support for the second conductive terminal, and the second piercing portion is located on the outside of the second plug-in portion.

[0017] The present invention also provides a stator assembly, comprising the aforementioned skeleton structure.

[0018] The present invention also provides a motor, comprising the aforementioned stator assembly.

[0019] The present invention provides a terminal block assembly, a skeleton structure, a stator assembly, and a motor, which have the following features:

[0020] Beneficial effects:

[0021] When the terminal assembly of the present application is applied to the motor, since the first conductive terminal is provided with a first puncture portion, when the lead of the winding is wound on the first puncture portion, a compression protection component will be assembled on the first conductive terminal to compress the lead, and the lead can be guaranteed to be punctured by the first puncture portion under the pressure of the compression protection component, so that the lead and the first conductive terminal are connected. In this way, there is no need to grind off the paint of the enameled wire first, and then wrap the peeled enameled wire on the terminal to connect. Moreover, the present application can use ordinary enameled wire, and there is no need to use the more expensive paint-free direct welding enameled wire, which also makes the cost of the present application lower. At the same time, the lead can be wound on the first puncture portion through an automated winding production equipment, which also makes the present application short in working hours, simple in process, and high in production efficiency. Further, when the compression protection component compresses the lead, it also has a protective effect on the lead, which can ensure that the lead will not loosen from the first puncture portion, thereby ensuring that the lead and the first conductive terminal are always in a conductive state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] Figure 1 is a cross-sectional view of a terminal block assembly according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a first conductive terminal of a terminal assembly according to an embodiment of the present invention being assembled on a first supporting component;

[0025] Figure 3 A schematic structural diagram of a first conductive terminal of a terminal assembly according to an embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a first supporting component of a terminal block assembly according to an embodiment of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a compression protection component of a terminal block assembly according to an embodiment of the present invention;

[0028] Figure 6 A bottom view of a compression protection component of a terminal block assembly according to an embodiment of the present invention;

[0029] Figure 7 is a cross-sectional view of a common terminal assembly according to an embodiment of the present invention;

[0030] Figure 8 is a structural schematic diagram of a common terminal assembly according to an embodiment of the present invention;

[0031] Fig. 9 A schematic structural diagram of a second conductive terminal of a common terminal assembly according to an embodiment of the present invention;

[0032] Fig.10 It is a structural schematic diagram of a second supporting component of a common terminal assembly according to an embodiment of the present invention;

[0033] Fig.11 It is a front schematic diagram of a first insulating frame of the frame structure of an embodiment of the present invention;

[0034] Fig.12 A schematic back view of a first insulating frame of a frame structure according to an embodiment of the present invention;

[0035] Fig.13 is a schematic diagram of a skeleton structure of an embodiment of the present invention;

[0036] Fig.14 is a schematic diagram of the back side of the skeleton structure of an embodiment of the present invention at a first viewing angle;

[0037] Fig.15 is a schematic diagram of the back side of the skeleton structure of an embodiment of the present invention at a second viewing angle;

[0038] Fig.16A schematic structural diagram of a second insulating skeleton of the skeleton structure of an embodiment of the present invention;

[0039] Fig.17 A schematic structural diagram of a stator core of a stator assembly according to an embodiment of the present invention;

[0040] Fig.18 It is a structural schematic diagram of a stator assembly without windings in an embodiment of the present invention;

[0041] Fig.19 It is a structural schematic diagram of a U-phase winding wound on a stator assembly according to an embodiment of the present invention;

[0042] Fig. 20 for Fig.19 An enlarged schematic diagram of the stator assembly at point A of an embodiment of the present invention;

[0043] Fig.21 It is a schematic diagram of the structure of U, V, and W phase windings wound on the stator assembly of an embodiment of the present invention.

[0044] The reference numerals are as follows:

[0045] 1. first conductive terminal; 11. first piercing portion; 12. first top wall; 13. first side wall; 14. wiring portion; 15. first limiting portion; 16. first side mounting hole; 17. first top mounting hole; 2. compression protection component; 21. compression protection arm; 22. top cover; 23. avoidance groove; 3. winding; 4. lead wire; 5. first supporting component; 51. first plug-in portion; 52. first extension arm; 53. first mounting column; 54. first side fixing column; 55. first top fixing column; 6. first insulating frame; 61. outer ring wall; 62. first mounting groove; 63. First plug hole; 64. First receiving slot; 65. Inner tooth; 66. Second mounting slot; 67. Second plug hole; 68. Second receiving slot; 7. Second conductive terminal; 71. Second piercing portion; 72. Second top wall; 73. Second side wall; 74. Second limiting portion; 75. Second side mounting hole; 76. Second top mounting hole; 8. Tail wire; 9. Second supporting member; 91. Second plug-in portion; 92. Second extension arm; 93. Second mounting column; 94. Second side fixing column; 95. Second top fixing column; 10. Second insulating frame; 20. Stator core. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0050] See also Figures 1 to 21As shown, according to an embodiment of the present invention, there is provided a terminal assembly, comprising a first conductive terminal 1 and a compression protection component 2, wherein the first conductive terminal 1 has a first piercing portion 11, the first piercing portion 11 is used for winding a lead 4 of a winding 3, the compression protection component 2 is assembled on the first conductive terminal 1, and the compression protection component 2 can compress the lead 4 wound on the first piercing portion 11 so that the lead 4 is pierced by the first piercing portion 11.

[0051] In this technical solution, when the terminal assembly of the present application is applied to the motor, since the first conductive terminal 1 is provided with the first puncture portion 11, when the lead 4 of the winding 3 is wound on the first puncture portion 11, the first conductive terminal 1 will also be assembled with a compression protection component 2 to compress the lead 4, and the lead 4 can be guaranteed to be punctured by the first puncture portion 11 under the pressure of the compression protection component 2, so that the lead 4 and the first conductive terminal 1 are connected. In this way, there is no need to grind off the paint of the enameled wire first, and then wind the peeled enameled wire on the terminal for connection as in the traditional manual polishing of the paint. Moreover, the present application can use ordinary enameled wire, and there is no need to use the more expensive paint-free direct welding enameled wire, which also makes the cost of the present application lower. At the same time, the winding of the lead 4 on the first puncture portion 11 can be completed by automated winding production equipment, which also makes the present application short in working time, simple in process, and high in production efficiency. Furthermore, when the compression protection component 2 compresses the lead 4, it also protects the lead 4, ensuring that the lead 4 will not loosen from the first puncture portion 11, thereby ensuring that the lead 4 and the first conductive terminal 1 are always in a conductive state.

[0052] It should be noted that the compression protection component 2 is an insulating component. When the compression protection component 2 compresses the lead 4, it also has a fixing and insulating effect on the lead 4. In this way, there is no need to first grind off the paint of the enameled wire like manually grinding the paint, and then wrap the enameled wire and the power cord. For fixing and insulation, soldering, adhesive tape and insulating sleeves are also required. Furthermore, the existing plug-in piercing terminal can also pierce the enameled wire, but one terminal can only be used for enameled wires within a certain range of wire diameters. It cannot pierce and conduct enameled wires that are too thin, and it will break enameled wires that are too thick. The first conductive terminal 1 of the present application can be used with enameled wires of various specifications because it cooperates with the compression protection component 2.

[0053] See also Figures 1 to 3 As shown, the first piercing portion 11 includes at least two first sawtooth structures, and the first sawtooth structures are sequentially spaced and distributed along the height direction of the first conductive terminal 1. Since the sawtooth structure has a relatively sharp cutting edge, when the first piercing portion 11 is a sawtooth structure, it is easier to pierce the lead 4.

[0054] See also Figure 2 and Figure 3As shown, the first conductive terminal 1 includes a first top wall 12 and two first side walls 13 connected to both sides of the first top wall 12, at least one of the first side walls 13 is provided with a first piercing portion 11, the first conductive terminal 1 is assembled on the first supporting member 5, the first supporting member 5 includes a first inserting portion 51, the first inserting portion 51 is inserted in the space enclosed by the first top wall 12 and the two first side walls 13 to support the first conductive terminal 1, and the first piercing portion 11 is located outside the first inserting portion 51. Preferably, the first piercing portion 11 is located at the side edge of the first side wall 13.

[0055] In this embodiment, the first conductive terminal 1 is made of a long metal sheet that is stamped and then bent, which can reduce the material used for the first conductive terminal 1 and reduce its weight. However, this also makes the strength of the first conductive terminal 1 insufficient, and it is easy to deform after winding, thereby affecting the piercing of the lead 4 by the first piercing portion 11. By providing a first support component 5 inserted in the first conductive terminal 1, the first conductive terminal 1 is supported and the structural strength of the first conductive terminal 1 is enhanced. Then, when the lead 4 of the winding 3 is wound around the first piercing portion 11 of the first conductive terminal 1, the first conductive terminal 1 will not be deformed, thereby ensuring that the lead 4 is pierced by the firm first piercing portion 11. It should be noted that when the first puncture portion 11 includes multiple first serration structures, each first serration structure can be distributed on both sides of each first side wall 13, which is equivalent to increasing the number of first serration structures and optimizing the distribution position of each first serration structure on the first conductive terminal 1, so that not only the lead 4 is easily punctured but also punctured in multiple places, which can further ensure the conduction between the lead 4 and the first conductive terminal 1.

[0056] It should be noted that the first support component 5 is an insulating component, and a plurality of first side fixing columns 54 are respectively formed on the front and rear surfaces of the first insertion portion 51, and a first top fixing column 55 is formed on the top surface of the first insertion portion 51. A plurality of first side mounting holes 16 are respectively constructed on the two first side walls 13 of the first conductive terminal 1, and a first top mounting hole 17 is constructed on the first top wall of the first conductive terminal 1. When the first conductive terminal 1 is assembled to the first insertion portion 51 of the first support component 5, each of the first side fixing columns 54 is respectively inserted into each of the first side mounting holes 16, and the first top fixing column 55 is inserted into the first top mounting hole 17, so that the first conductive terminal 1 is fixed to the first support component 5, as shown in FIG. Figures 2 to 4 shown.

[0057] See also Figures 1 to 3 As shown, the first conductive terminal 1 further has a connection portion 14, which is located at the top of the first conductive terminal 1 and is used to connect to a power line.

[0058] In this technical solution, the wiring portion 14 is designed on the top of the first conductive terminal 1 so that the terminal assembly can be used in both iron shell motors and plastic sealed motors. Specifically, when the terminal assembly is used on an iron shell motor, the power line is directly connected to the wiring portion 14 to achieve the connection between the power line and the winding 3 through the wiring portion 14. When the terminal assembly is used on a plastic sealed motor, the wiring portion 14 can be leaked out of the plastic sealed stator during the injection molding process, thereby reserving a position for the wiring of the plastic sealed stator, and then the power line is connected to the wiring portion 14 to achieve the connection between the power line and the winding 3 through the wiring portion 14. It can be understood that due to the compression of the lead 4 by the compression protection component 2, the lead 4 is closely attached to the first puncture portion 11 of the first conductive terminal 1. Even when plastic sealing is performed, the plastic sealing material will not enter between the first puncture portion 11 and the lead 4, thereby not affecting the puncture of the lead 4 by the first puncture portion 11, and will not cause insulation between the first puncture portion 11 and the lead 4 to affect the connection. The connection portion 14 is located on the first top wall 12 , and the connection portion 14 may be an upright metal sheet.

[0059] See also Figures 1 to 3 As shown, the first conductive terminal 1 also has a first limiting portion 15. Along the height direction of the first conductive terminal 1, the first limiting portion 15 is located below the first piercing portion 11, and the first limiting portion 15 and the first piercing portion 11 are spaced apart, and the first turn of the lead wire 4 is clamped between the first limiting portion 15 and the first piercing portion 11.

[0060] In this embodiment, the first turn of the lead wire 4 wound on the first conductive terminal 1 is very important. Only after the first turn of the lead wire is processed well, it is convenient to wind the lead wire on the first puncture portion 11 later. The first limit portion 15 can be provided to lift and limit the first turn of the lead wire 4 to prevent the lead wire 4 wound on the first conductive terminal 1 from falling off downward, thereby making the subsequent winding of the lead wire 4 on the first puncture portion 11 smoother. The first limit portion 15 can be a protrusion formed on the first side wall 13. Preferably, the protrusion is formed on both sides of each first side wall 13, so that the first turn of the lead wire 4 can be better lifted.

[0061] See also Figure 1 , Figure 5 and Figure 6As shown, the compression protection component 2 has a compression protection arm 21, which is located outside the first puncture portion 11 and forms compression on the lead 4. By providing the compression protection arm 21 to compress the lead 4, the material used for the compression protection component 2 can be reduced, thereby reducing the weight of the compression protection component 2 and reducing the cost. Among them, the compression protection component 2 also includes a top cover 22, which is buckled on the first top wall 12 of the first conductive terminal 1, and the top wall of the top cover 22 is respectively constructed with an avoidance groove 23 and a containing chamber, the avoidance groove 23 penetrates the top wall of the top cover 22, the wiring portion 14 passes through the avoidance groove 23, and the first top fixing column 55 is in the containing chamber. Preferably, the number of the compression protection arms 21 is two, and the two compression protection arms 21 are respectively located on the left and right sides of the top cover 22. By compressing the lead 4 from the left and right sides by the two compression protection arms 21, it can be ensured that the left and right sides of the lead 4 are punctured by the first puncture portion 11 at multiple locations, and at the same time, the left and right forces of the lead 4 can be balanced.

[0062] See also Figure 1 As shown, the free end of the compression protection arm 21 forms a hook claw, which extends into the space formed between the first limiting portion 15 and the first piercing portion 11 and abuts against the first turn wire. As mentioned above, the first turn wire of the lead wire 4 wound on the first conductive terminal 1 is very important, so the first limiting portion 15 is designed to lift and limit the first turn wire. When the hook claw extends into the space formed between the first limiting portion 15 and the first piercing portion 11 and abuts against the first turn wire, the hook claw also fixes the first turn wire, which can further ensure that the lead wire 4 will not be loosened from the first conductive terminal 1.

[0063] The present invention further provides a frame structure, comprising a first insulating frame 6 and the aforementioned terminal assembly, wherein the terminal assembly is assembled on the first insulating frame 6 .

[0064] See also Figures 11 to 14 As shown, the first insulating skeleton 6 includes an outer annular wall 61, on which are constructed first mounting grooves 62 and first insertion holes 63 which are spaced apart from each other. Both the first mounting grooves 62 and the first insertion holes 63 pass through the outer annular wall 61. The first supporting component 5 also includes a first extension arm 52 connected to the side of the first plug-in portion 51. The first extension arm 52 is close to the bottom of the first plug-in portion 51, and a first mounting column 53 is formed on the first extension arm 52. The first plug-in portion 51 passes through the first mounting groove 62 from the back side of the outer annular wall 61. The first mounting column 53 is inserted into the first insertion hole 63, and the first extension arm 52 is on the back side of the outer annular wall 61.

[0065] In this embodiment, since the first extension arm 52 is close to the bottom of the first insertion portion 51, when the first insertion portion 51 passes through the first installation groove 62 from the back of the outer ring wall 61 and the first installation column 53 is inserted into the first insertion hole 63, the first extension arm 52 will be at the back of the outer ring wall 61, so that the first support component 5 is assembled on the first insulating frame 6, and then the entire terminal assembly is assembled on the first insulating frame 6. Preferably, the first extension arm 52 is connected to both sides of the first insertion portion 51, and the first installation column 53 is formed on both first extension arms 52. The number of the first insertion holes 63 is two, and along the circumference of the outer ring wall 61, the two first insertion holes 63 are respectively located on both sides of the first installation groove 62. When the first support component 5 is assembled on the first insulating frame 6, the two first installation columns 53 are respectively inserted into the first insertion holes 63, so that the assembly of the entire terminal assembly on the first insulating frame 6 is more stable.

[0066] See also Figure 12 to Figure 14 As shown, a first receiving groove 64 is configured on the back side of the outer ring wall 61 , the first installation groove 62 is communicated with the first insertion hole 63 through the first receiving groove 64 , and the first extension arm 52 is located in the first receiving groove 64 .

[0067] In this technical solution, the first insulating frame 6 is usually assembled at the end of the stator core 20. By constructing the first accommodating groove 64, the first extension arm 52 is hidden in the first accommodating groove 64. When the first support component 5 is assembled on the first insulating frame 6, the bottom of the first support component 5 is flush with the bottom surface of the outer ring wall 61, so that it will not affect the installation of the first insulating frame 6 at the end of the stator core 20. The back side of the outer ring wall 61 refers to the side of the outer ring wall 61 facing the stator core 20.

[0068] See also Fig.13 , Figures 18 to 21 As shown, there are three terminal assemblies, and all three terminal assemblies are assembled on the first insulating skeleton 6. The first insulating skeleton 6 also includes a plurality of inner guard teeth 65 located radially inward of the outer ring wall 61. The inner guard teeth 65 are distributed at intervals along the circumference of the outer ring wall 61. The installation positions of the three terminal assemblies correspond to the positions of three adjacent inner guard teeth 65.

[0069] In this embodiment, the three terminal blocks are respectively used to wind, pierce and fix the leads 4 of the U, V and W phase windings 3. When the installation positions of the three terminal blocks respectively correspond to the positions of the three adjacent inner teeth 65, it indicates that the three terminal blocks are installed adjacent to each other, so that the three terminal blocks are close to each other, which can facilitate the connection of the power cords behind with the three wiring parts 14 of the three terminal blocks respectively, and it is not easy for the power cords to become loose after being connected with the wiring parts 14.

[0070] See also Figures 7 to 10 as well as Figures 18 to 20 As shown, a common terminal assembly is also assembled on the first insulating frame 6, and the common terminal assembly includes two second conductive terminals 7 distributed at intervals, and the two second conductive terminals 7 both have a second puncture portion 71, and the tail wire 8 of the winding 3 is wound on the two second puncture portions 71 in a cross winding manner.

[0071] In this embodiment, the second piercing portion 71 is provided so that the tail wire 8 of the winding 3 wound on the second conductive terminal 7 can be pierced, so that the tail wire 8 and the second conductive terminal 7 can be connected after the tail wire 8 is wound on the second piercing portion 71. When the common terminal assembly includes two second conductive terminals 7 spaced apart, the tail wire 8 can be wound on the two second piercing portions 71 in a cross winding manner, such as Fig. 20 As shown, the so-called cross winding method refers to an "8"-shaped winding method, so that the tail wire 8 wound on the two second puncture parts 71 will not be loose, thereby eliminating the need to install a protective component to prevent loosening. It can be understood that when the number of terminal assemblies is three, the tail wires 8 of the U, V, and W phase windings 3 are all wound on the two second puncture parts 71 in a cross winding method.

[0072] See also Figures 7 to 9 As shown, the second piercing portion 71 includes at least two second sawtooth structures, and each second sawtooth structure is sequentially spaced and distributed along the height direction of the second conductive terminal 7. Since the sawtooth structure has a relatively sharp cutting edge, when the second piercing portion 71 is a sawtooth structure, it is easier to pierce the tail wire 8.

[0073] As a specific implementation, the common terminal assembly and the wiring terminal assembly are arranged 180° opposite to each other on the first insulating frame 6, so that the winding 3 can be routed between the wiring terminal assembly and the common terminal assembly with the shortest distance, the fastest and most convenient routing. When the number of the wiring terminal assemblies is three, the common terminal assembly is arranged 180° opposite to the middle wiring terminal assembly.

[0074] See also Figure 8 and Fig. 9 As shown, the second conductive terminal 7 includes a second top wall 72 and two second side walls 73 connected to both sides of the second top wall 72, at least one of the second side walls 73 is provided with a second piercing portion 71, the second conductive terminal 7 is assembled on the second supporting member 9, the second supporting member 9 includes two second plug-in portions 91 distributed at intervals, the second plug-in portion 91 is inserted in the space enclosed by the second top wall 72 and the two second side walls 73 to support the second conductive terminal 7, and the second piercing portion 71 is located outside the second plug-in portion 91. Preferably, the second piercing portion 71 is located at the side edge of the second side wall 73.

[0075] In this technical solution, the second conductive terminal 7 is made of a long metal sheet that is stamped and then bent, which can reduce the material used for the second conductive terminal 7 and reduce its weight. However, this also makes the second conductive terminal 7 insufficiently strong and easily deformed after winding, thereby affecting the piercing of the tail wire 8 by the second piercing portion 71. By providing a second support component 9 inserted in the second conductive terminal 7, the second conductive terminal 7 is supported and the structural strength of the second conductive terminal 7 is enhanced. Then, when the tail wire 8 of the winding 3 is wound around the second piercing portion 71 of the second conductive terminal 7, the second conductive terminal 7 will not be deformed, thereby ensuring that the tail wire 8 is pierced by the strong second piercing portion 71. It should be noted that when the second piercing portion 71 includes a plurality of second sawtooth structures, each second sawtooth structure can be distributed on both sides of each second side wall 73, which is equivalent to increasing the number of second sawtooth structures and optimizing the distribution position of each second sawtooth structure on the second conductive terminal 7, so that the tail wire 8 is not only easy to be pierced but also pierced at multiple locations, which can further ensure the conduction between the tail wire 8 and the second conductive terminal 7. It can be understood that only the combination of two second conductive terminals 7 and two second supporting components 9 is required to connect and fix the tail wire 8 of the three-phase winding 3, so that the common terminal assembly of the present application is small in size and the wiring operation is simple.

[0076] It should be noted that the second supporting component 9 is an insulating component, and a plurality of second side fixing columns 94 are respectively formed on the front and rear surfaces of the second inserting portion 91, and a second top fixing column 95 is formed on the top surface of the second inserting portion 91. A plurality of second side mounting holes 75 are respectively constructed on the two second side walls 73 of the second conductive terminal 7, and a second top mounting hole 76 is constructed on the second top wall 72 of the second conductive terminal 7. When the second conductive terminal 7 is assembled to the second inserting portion 91 of the second supporting component 9, each second side fixing column 94 is respectively inserted into each second side mounting hole 75 and the second top fixing column 95 is inserted into the second top mounting hole 76, so that the second conductive terminal 7 is fixed to the second supporting component 9, as shown in FIG. Figures 8 to 10 shown.

[0077] See also Figures 7 to 9 As shown, the second conductive terminal 7 also has a second limiting portion 74. Along the height direction of the second conductive terminal 7, the second limiting portion 74 is located below the second piercing portion 71, and the second limiting portion 74 and the second piercing portion 71 are spaced apart. The first turn of the tail wire 8 is clamped between the second limiting portion 74 and the second piercing portion 71.

[0078] In this embodiment, the first turn of the lead wire 4 wound on the second conductive terminal 7 is very important. Only after the first turn is processed, it is convenient to wind the wire on the second puncture portion 71. The first turn of the tail wire 8 can be lifted and limited by setting the second limiting portion 74 to prevent the tail wire 8 wound on the second conductive terminal 7 from falling off downward, thereby making the subsequent winding of the tail wire 8 on the second puncture portion 71 smoother. Among them, the second limiting portion 74 can be a protrusion formed on the second side wall 73. Preferably, the protrusion is formed on both sides of each second side wall 73, so that the first turn of the tail wire 8 can be better lifted.

[0079] See also Figures 11 to 15 As shown, two second mounting grooves 66 and second insertion holes 67 are constructed on the outer annular wall 61, and the second mounting grooves 66 and the second insertion holes 67 both penetrate the outer annular wall 61. The second supporting component 9 also includes a second extension arm 92 connected to the side of the second plug-in portion 91, the second extension arm 92 is close to the bottom of the second plug-in portion 91, and a second mounting column 93 is formed on the second extension arm 92. The second plug-in portion 91 penetrates the second mounting groove 66 from the back side of the outer annular wall 61, the second mounting column 93 is inserted in the second insertion hole 67, and the second extension arm 92 is on the back side of the outer annular wall 61.

[0080] In this embodiment, since the second extension arm 92 is close to the bottom of the second insertion portion 91, when the second insertion portion 91 passes through the second installation groove 66 from the back of the outer ring wall 61 and the second installation column 93 is inserted into the second insertion hole 67, the second extension arm 92 will be on the back of the outer ring wall 61, so that the second support component 9 is assembled on the first insulating frame 6, and then the entire common terminal assembly is assembled on the first insulating frame 6. Among them, the two second insertion portions 91 are connected by a connecting arm, and the connecting arm is on the back of the outer ring wall 61. Along the circumference of the outer ring wall 61, the two second insertion holes 67 are respectively located on the outside of the two second installation grooves 66.

[0081] See also Figure 12 to Figure 14 As shown, the back of the outer ring wall 61 is configured with a second receiving groove 68, the second mounting groove 66 is connected with the second plug hole 67 through the second receiving groove 68, and the second extension arm 92 is located in the second receiving groove 68. The back of the outer ring wall 61 is also configured with a sink groove, which connects the two second mounting grooves 66, and the connecting arm is located in the sink groove.

[0082] In this technical solution, by constructing a second accommodating groove 68 and a sink groove, the second extension arm 92 is hidden in the second accommodating groove 68, and the connecting arm is hidden in the sink groove. When the second support component 9 is assembled in place on the first insulating frame 6, the bottom of the second support component 9 is flush with the bottom surface of the outer ring wall 61, so that it will not affect the installation of the first insulating frame 6 at the end of the stator core 20.

[0083] It should be noted that the first plug-in portion 51 and the second plug-in portion 91 are both three-stage rectangular parallelepiped structures, the width of the first-stage rectangular parallelepiped located at the top is smaller than the width of the second-stage rectangular parallelepiped in the middle, the thickness of the second-stage rectangular parallelepiped is smaller than the thickness of the third-stage rectangular parallelepiped at the bottom, and after the electrical terminal is assembled on the plug-in portion, the piercing portion is located on the outside of the first-stage rectangular parallelepiped. The skeleton structure also includes a second insulating skeleton 10, and the second insulating skeleton 10 and the first insulating skeleton 6 are respectively assembled at the two ends of the stator core 20. When the stator core 20 is placed vertically, the first insulating skeleton 6 is the upper skeleton and the second insulating skeleton 10 is the lower skeleton.

[0084] The present invention also provides a stator assembly, including the aforementioned skeleton structure. The production process of the stator assembly is as follows: three first conductive terminals 1 are pre-assembled with three first support components 5 respectively, and two second conductive terminals 7 are pre-assembled with two second support components 9 respectively - the pre-assembled terminal components and the common terminal components are pre-assembled on the first insulating skeleton 6 - the first insulating skeleton 6 and the second insulating skeleton 10 are mounted on the stator core 20 - the U winding, the V winding, and the W winding are wound - the three compression protection components 2 are respectively installed on the three first conductive terminals 1 to produce the stator assembly.

[0085] The present invention also provides a motor, comprising the above-mentioned stator assembly. The motor of the present invention is particularly a brushless DC motor.

[0086] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0087] The above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A terminal block assembly, characterized in that: The invention comprises a first conductive terminal (1) and a compression protection component (2), wherein the first conductive terminal (1) has a first piercing portion (11), the first piercing portion (11) is used for winding a lead wire (4) of a winding (3), and the compression protection component (2) is assembled on the first conductive terminal (1), and the compression protection component (2) can compress the lead wire (4) wound on the first piercing portion (11) so that the lead wire (4) is pierced by the first piercing portion (11).

2. The terminal assembly according to claim 1, characterized in that: The first piercing portion (11) comprises at least two first sawtooth structures, and the first sawtooth structures are sequentially spaced and distributed along the height direction of the first conductive terminal (1).

3. The terminal assembly according to claim 1, characterized in that: The first conductive terminal (1) comprises a first top wall (12) and two first side walls (13) connected to both sides of the first top wall (12), at least one of the first side walls (13) being provided with the first piercing portion (11), the first conductive terminal (1) being assembled on a first supporting component (5), the first supporting component (5) comprising a first inserting portion (51), the first inserting portion (51) being inserted into a space enclosed by the first top wall (12) and the two first side walls (13) to form support for the first conductive terminal (1), the first piercing portion (11) being located outside the first inserting portion (51).

4. The terminal assembly according to claim 1, characterized in that: The first conductive terminal (1) further comprises a connection portion (14), wherein the connection portion (14) is located at the top of the first conductive terminal (1), and the connection portion (14) is used for connecting to a power line.

5. The terminal block assembly according to any one of claims 1 to 4, characterized in that: The first conductive terminal (1) further comprises a first limiting portion (15), and along the height direction of the first conductive terminal (1), the first limiting portion (15) is located below the first piercing portion (11), and the first limiting portion (15) and the first piercing portion (11) are arranged at an interval, and the first turn of the lead wire (4) is clamped between the first limiting portion (15) and the first piercing portion (11).

6. The terminal assembly according to claim 5, characterized in that: The compression protection component (2) has a compression protection arm (21), and the compression protection arm (21) is located outside the first puncture part (11) and exerts pressure on the lead wire (4).

7. The terminal assembly according to claim 6, characterized in that: The free end of the compression protection arm (21) forms a hook claw, which extends into the space formed between the first limiting portion (15) and the first piercing portion (11) and abuts against the first turn wire.

8. A skeleton structure, characterized in that: It comprises a first insulating frame (6) and a terminal block assembly according to any one of claims 1 to 7, wherein the terminal block assembly is assembled on the first insulating frame (6).

9. The skeleton structure according to claim 8, characterized in that: The first insulating frame (6) comprises an outer ring wall (61), on which are arranged first mounting grooves (62) and first insertion holes (63) spaced apart from each other, the first mounting grooves (62) and the first insertion holes (63) both passing through the outer ring wall (61), the first supporting component (5) further comprising a first extension arm (52) connected to the side surface of the first insertion portion (51), the first extension arm (52) being close to the bottom of the first insertion portion (51), and a first mounting column (53) being formed on the first extension arm (52), the first insertion portion (51) passing through the first mounting groove (62) from the back surface of the outer ring wall (61), the first mounting column (53) being inserted into the first insertion hole (63), and the first extension arm (52) being located on the back surface of the outer ring wall (61).

10. The skeleton structure according to claim 9, characterized in that: A first receiving groove (64) is constructed on the back side of the outer ring wall (61), the first installation groove (62) is connected to the first plug hole (63) through the first receiving groove (64), and the first extension arm (52) is located in the first receiving groove (64); and / or the number of the terminal assemblies is three, and the three terminal assemblies are all assembled on the first insulating skeleton (6), and the first insulating skeleton (6) also includes a plurality of inner guard teeth (65) located radially inside the outer ring wall (61), and each of the inner guard teeth (65) is distributed at intervals along the circumference of the outer ring wall (61), and the installation positions of the three terminal assemblies correspond to the positions of three adjacent inner guard teeth (65).

11. The skeleton structure according to claim 9, characterized in that: A common terminal assembly is also assembled on the first insulating frame (6), and the common terminal assembly includes two second conductive terminals (7) distributed at intervals, and the two second conductive terminals (7) both have a second piercing portion (71), and the tail wire (8) of the winding (3) is wound around the two second piercing portions (71) in a cross-winding manner.

12. The skeleton structure according to claim 11, characterized in that: The common terminal assembly and the connection terminal assembly are arranged on the first insulating frame (6) at an angle of 180 degrees to each other.

13. The skeleton structure according to claim 11, characterized in that: The second conductive terminal (7) comprises a second top wall (72) and two second side walls (73) connected on both sides of the second top wall (72), at least one of the second side walls (73) being provided with the second piercing portion (71), the second conductive terminal (7) being assembled on a second supporting component (9), the second supporting component (9) comprising two second plug-in portions (91) spaced apart, the second plug-in portion (91) being inserted into a space enclosed by the second top wall (72) and the two second side walls (73) to form support for the second conductive terminal (7), and the second piercing portion (71) being located on the outer side of the second plug-in portion (91).

14. A stator assembly, characterized in that: The invention comprises the skeleton structure according to any one of claims 8 to 13.

15. A motor, characterized in that: Includes the stator assembly as described in claim 14.

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