Stator components, motors and electrical devices

Abstract

The present invention provides a stator assembly, a motor and an electrical device, which relates to the technical field of stator structure, and solves the technical problem that the connection process between the enameled wire and the terminal in the stator assembly in the prior art is time-consuming and labor-intensive. The stator assembly includes a stator skeleton body, a boss structure and a piercing terminal structure. The end of the stator skeleton body is provided with the boss structure, and the piercing terminal structure includes a pin body, a connecting portion and a piercing portion. The pin body is connected to the piercing portion through the connecting portion, and the pin body and the piercing portion are in different planes. The piercing terminal structure is installed on the boss structure, and the enameled wire can be led out through the boss structure into the piercing portion, and the piercing portion can pierce the paint coating of the enameled wire to conduct the enameled wire and the piercing terminal structure. The present invention is used to simplify the production process of the stator assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of stator structures, and in particular to a stator assembly, a motor and an electrical device. Background Art

[0002] In injection-molded motors, there is often a solution for injection molding with pins (terminals). The pins need to be connected to the windings for conduction. Before injection molding, the enameled wires led out of the wound stator are stripped of the paint. The paint on the outer layer of the enameled wire is an insulator, which mainly plays a role in corrosion resistance and oxidation resistance in the working environment.

[0003] When multiple strands of enameled wires are riveted to terminals, due to the insulating effect of the outer layer of the enameled wire, it is not possible for each enameled wire to conduct current after riveting. Therefore, the insulating layer on the outside of the enameled wire needs to be broken. The enameled wire is usually stripped mechanically, manually or chemically, and then the stripped enameled wire is wrapped around the terminal pin for several turns, and then the wrapped part is soldered and tightened to ensure the mechanical connection reliability and electrical conduction reliability of the enameled wire and the pin.

[0004] However, the applicant has found that the prior art has at least the following technical problems:

[0005] When the existing enameled wire is connected to the terminal, the outer coating of the enameled wire needs to be broken first, and then the winding part of the enameled wire is soldered and tightened, which requires more processes and more production personnel. Summary of the invention

[0006] The purpose of the present invention is to provide a stator assembly, a motor and an electrical device. The technical problem that the connection process between the enameled wire and the terminal in the stator assembly in the prior art is time-consuming and labor-intensive is solved. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The stator assembly provided by the present invention comprises a stator frame body, a boss structure and a piercing terminal structure, wherein the boss structure is provided at the end of the stator frame body, wherein: the piercing terminal structure comprises a pin body, a connecting portion and a piercing portion, the pin body is connected to the piercing portion through the connecting portion and the pin body and the piercing portion are in different planes, the piercing terminal structure is installed on the boss structure, the enameled wire can be led out through the boss structure into the piercing portion and the piercing portion can pierce the paint coating of the enameled wire to conduct the enameled wire and the piercing terminal structure.

[0009] Preferably, the boss structure includes a boss, a first connecting plate and a second connecting plate, the two ends of the two adjacent bosses in each boss structure are respectively connected by the first connecting plate and the second connecting plate, and an outlet groove for leading out the enameled wire is formed between the two adjacent second connecting plates, the first connecting plate is located close to the outer peripheral wall of the stator frame body, the piercing terminal structure is installed on the boss and the piercing portion abuts against the upper end surface of the first connecting plate.

[0010] Preferably, the puncturing portion includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are connected, the first clamping plate is connected to the connecting portion and the first clamping plate abuts against the upper end surface of the first connecting plate, and the first clamping plate and the second clamping plate are both provided with a puncturing mechanism, and the second clamping plate can squeeze the enameled wire between the first clamping plate and the second clamping plate toward the direction close to the first clamping plate under the action of external force and can puncture the paint coating of the enameled wire through the puncturing mechanism.

[0011] Preferably, a plurality of first strip grooves in the same direction and a plurality of second strip grooves in the same direction are provided on the inner surfaces of the first clamping plate and the second clamping plate, and the puncturing mechanism is the first strip grooves and the second strip grooves arranged crosswise to form a plurality of protrusions.

[0012] Preferably, the first clamping plate includes a connecting section and an abutting section, the connecting section is connected to the connecting portion and the first clamping plate is in an inverted "L" shape, one end of the abutting section is connected to the connecting section, and the other end of the abutting section is connected to the second clamping plate, the abutting section and the second clamping plate are both provided with the piercing mechanism, and when the piercing terminal structure is installed on the boss structure, the connecting section is located on the boss, and the lower end face of the abutting section abuts against the upper end face of the first connecting plate.

[0013] Preferably, the connecting portion is vertically connected to the pin body, and the first clamping plate is parallel to the pin body.

[0014] Preferably, when the second clamping plate abuts against the first clamping plate under the action of an external force, the lower end surface of the second clamping plate is located above the first connecting plate.

[0015] Preferably, the stator assembly also includes a sleeve structure, the sleeve structure includes a pin limiting portion and a boss structure connecting portion, wherein: the two ends of the pin limiting portion are respectively connected to a boss structure connecting portion and the pin limiting portion and the boss structure connecting portion are made of insulating material, the pin limiting portion is provided with a pin through-hole that allows the pin to pass through, the pin limiting portion is located on the boss between the first connecting plate and the second connecting plate and is pressed above the connecting portion, and the boss structure for placing the piercing terminal structure is connected to its adjacent boss structure through the boss structure connecting portion.

[0016] Preferably, the boss structure connection portion has an inner surface and an outer surface, the inner surface is located closer to the center of the stator frame body relative to the outer surface, and the outer surface is a curved surface.

[0017] Preferably, the height of the first connecting plate and the height of the second connecting plate are both higher than the height of the boss, and the distance between two adjacent second connecting plates in each boss structure is smaller than the distance between two adjacent first connecting plates.

[0018] A motor comprises the stator assembly.

[0019] An electrical appliance comprises a motor, wherein the motor is the motor mentioned above.

[0020] The stator assembly provided by the present invention includes a stator frame body, a boss structure and a piercing terminal structure. The end of the stator frame body is provided with a boss structure, and the boss structure is provided for installing the piercing terminal structure. The piercing terminal structure includes a pin body, a connecting portion and a piercing portion. The terminal structure in the present invention is connected to the pierceable portion through the connecting portion while retaining the original pin body. The piercing portion has the function of piercing the paint coating of the enameled wire. In addition, since the piercing portion will cause deformation of the pin body after being crimped by the terminal crimping device, the piercing portion and the pin body cannot be designed on the same plane. The piercing portion in the present invention can ensure that the enameled wire and the piercing terminal structure are electrically conductive while piercing the paint coating of the enameled wire. The piercing process is convenient, avoiding the time and labor consumed by manual paint stripping. With the reduction of paint stripping and wire winding processes, the workload during assembly can be reduced to a certain extent, thereby effectively improving the overall assembly efficiency of the stator assembly. The assembly process is extremely simple and labor-saving. With the simplification of the assembly process, the possibility of automated production can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of the overall structure of a stator assembly provided in an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0024] Figure 3 It is a schematic structural diagram of the coordination between the stator frame body and the boss structure provided by an embodiment of the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of a piercing terminal structure provided by an embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a three-dimensional structure of another piercing terminal structure provided by an embodiment of the present invention;

[0027] Figure 6 yes Figure 5 A side view of the piercing terminal structure provided in.

[0028] In the figure, 1, stator frame body; 2, boss structure; 21, boss; 22, first connecting plate; 23, second connecting plate; 3, piercing terminal structure; 31, pin body; 32, connecting part; 33, piercing part; 331, first clamping plate; 3311, connecting section; 3312, abutting section; 332, second clamping plate; 4, wire outlet groove; 5, piercing mechanism; 6, sheath structure; 61, pin limiting part; 62, boss structure connecting part; 621, inner surface; 622, outer surface. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0030] See also Figure 1 and Figure 2The present invention provides a stator assembly, including a stator frame body 1, a boss structure 2 and a piercing terminal structure 3. The boss structure 2 is provided at the end of the stator frame body 1, wherein the piercing terminal structure 3 includes a pin body 31, a connecting portion 32 and a piercing portion 33. The pin body 31 is connected to the piercing portion 33 through the connecting portion 32, and the pin body 31 and the piercing portion 33 are in different planes. The piercing terminal structure 3 is installed on the boss structure 2, the enameled wire can be led out through the boss structure 2 and enter the piercing portion 33, and the piercing portion 33 can pierce the paint coating of the enameled wire to conduct the enameled wire and the piercing terminal structure 3.

[0031] The boss structure 2 is used to install the piercing terminal structure 3, wherein the piercing terminal structure 3 includes a pin body 31, a connecting portion 32 and a piercing portion 33. Figure 4 and Figure 5 As shown, the piercing terminal structure 3 in the present invention is connected to the piercing portion 33 through the connecting portion 32 while retaining the original pin body 31. During production, the enameled wire is placed at the piercing portion 33 of the piercing terminal structure 3. After being crimped by the equipment, the piercing portion 33 can wrap or clamp the enameled wire, and the piercing portion 33 can pierce the paint of the enameled wire. In addition, since the piercing portion 33 will cause the pin body 31 to deform after being crimped by the terminal crimping equipment, the piercing portion 33 and the pin body 31 cannot be designed on the same plane. The piercing portion 33 in the present invention can pierce the paint of the enameled wire while ensuring that the enameled wire and the piercing terminal structure 3 are electrically conductive. The piercing process is convenient, avoiding the time and labor consumed by manual paint stripping. With the reduction of paint stripping and wire winding processes, the workload during assembly can be reduced to a certain extent, thereby effectively improving the overall assembly efficiency of the stator assembly. The assembly process is extremely simple and labor-saving. With the simplification of the assembly process, the possibility of automated production can be effectively improved.

[0032] As an optional implementation of the embodiment of the present invention, the boss structure 2 includes a boss 21, a first connecting plate 22 and a second connecting plate 23. Figure 3 As shown, the two ends of the two adjacent bosses 21 in each boss structure 2 are connected by the first connecting plate 22 and the second connecting plate 23 respectively, and the two adjacent second connecting plates 23 form a wire outlet groove 4 for leading out the enameled wire, the first connecting plate 22 is located near the outer peripheral wall of the stator frame body 1, the piercing terminal structure 3 is installed on the boss 21, and the piercing portion 33 abuts against the upper end surface of the first connecting plate 22. The height of the first connecting plate 22 and the height of the second connecting plate 23 are both higher than the height of the boss 21, and the distance between the two adjacent second connecting plates 23 in each boss structure 2 (that is, the width of the wire outlet groove 4) is smaller than the distance between the two adjacent first connecting plates 22.

[0033] Figure 4 and Figure 5 The schematic diagrams of two piercing section structures are shown. Specifically, the piercing section 33 includes a first clamping plate 331 and a second clamping plate 332. The first clamping plate 331 and the second clamping plate 332 are connected. Figure 6 As shown, the first clamping plate 331 is connected to the connecting portion 32 and the first clamping plate 331 abuts against the upper end surface of the first connecting plate 22. The first clamping plate 331 and the second clamping plate 332 are both provided with a piercing mechanism 5. The second clamping plate 332 can squeeze the enameled wire between the first clamping plate 331 and the second clamping plate 332 toward the first clamping plate 331 under the action of external force, and the piercing mechanism 5 of the piercing portion 33 can bite the enameled wire, which is convenient for piercing the paint coating of the enameled wire. It should be noted that when the second clamping plate 332 abuts against the first clamping plate 331 under the action of external force, the lower end surface of the second clamping plate 332 is located above the first connecting plate 22. In addition, the first clamping plate 331 and the second clamping plate 332 in the present invention are both made of metal materials with good ductility.

[0034] The longitudinal cross section of the puncture portion 33 in this embodiment is in an inverted "V" shape. The puncture mechanism 5 is a plurality of sharp teeth formed along the inverted "V" shaped line on the inner surface of the puncture portion 33, and a plurality of grooves are formed between adjacent sharp teeth. When the present invention is crimped, the crimping is more convenient and easy to operate. The plurality of sharp teeth are used for the puncture operation, and the grooves are provided to ensure the success of the puncture. The puncture mechanism 5 in the present invention is not limited to this structure, as long as it can play the role of puncturing the paint coating of the enameled wire, for example, a plurality of first strip grooves in the same direction and a plurality of second strip grooves in the same direction can be provided on the inner surface of the first clamping plate 331 and the second clamping plate 332. The puncture mechanism 5 is a first strip groove and a second strip groove arranged crosswise to form a plurality of pattern-shaped grid protrusions. The pattern-shaped grid protrusions can puncture the paint coating on the surface of the enameled wire to achieve conduction between the enameled wire and the puncture terminal structure 3. Furthermore, the cross-section of the first strip groove and the second strip groove can be set to a rectangle, an inverted triangle or an inverted trapezoid, so that the part where the protrusion formed by the first strip groove and the second strip groove contacts the enameled wire is sharper and more conducive to piercing the outer wall (paint skin) of the enameled wire.

[0035] As an optional implementation scheme of the embodiment of the present invention, the first clamping plate 331 includes a connecting section 3311 and an abutting section 3312, the connecting section 3311 is connected to the connecting portion 32 and the first clamping plate 331 is in an inverted "L" shape, one end of the abutting section 3312 is connected to the connecting section 3311, and the other end of the abutting section 3312 is connected to the second clamping plate 332, and the abutting section 3312 and the second clamping plate 332 are both provided with a piercing mechanism 5. When the piercing terminal structure 3 is installed on the boss structure 2, the connecting section 3311 is located on the boss 21, and the lower end surface of the abutting section 3312 abuts against the upper end surface of the corresponding first connecting plate 22. The first connecting plate 22 plays a limiting role here, limiting the downward movement of the piercing terminal structure 3, and at the same time can limit the piercing terminal structure 3 to the right direction (such as Figure 2 As shown, the right direction refers to the direction approaching the corresponding first connecting plate 22).

[0036] As an optional implementation of the embodiment of the present invention, the connecting portion 32 is vertically connected to the pin body 31, and the first clamping plate 331 is parallel to the pin body 31 so that the piercing portion 33 and the pin body 31 are located on different planes. The pin body 31 is a critical dimension part, and the relevant dimensions need to be guaranteed. However, during the actual installation process, the piercing portion 33 will cause the pin body 31 to deform after being crimped by the terminal crimping device. Therefore, the piercing portion 33 and the pin body 31 cannot be designed to be on the same plane. Usually in a compact injection molded motor, this design can also save space in the vertical space.

[0037] In addition, the stator assembly also includes a sheath structure 6, and the sheath structure 6 includes a pin limiting portion 61 and a boss structure connecting portion 62, wherein the two ends of the pin limiting portion 61 are respectively connected to a boss structure connecting portion 62, and the pin limiting portion 61 and the boss structure connecting portion 62 are made of insulating material, and the pin limiting portion 61 is provided with a pin through-hole that allows the pin to pass through, and the pin limiting portion 61 is located on the boss 21 between the first connecting plate 22 and the second connecting plate 23 and is pressed above the connecting portion 32, and the boss structure 2 where the piercing terminal structure 3 is placed is connected to its adjacent boss structure 2 through the boss structure connecting portion 62. During installation, the sheath structure 6 is used to press the connecting portion 32 at the bottom of the piercing terminal structure 3, which plays a role in fixing the piercing terminal structure 3 to prevent it from moving during injection molding, and at the same time, the size of the piercing terminal structure 3 in the axial space can be ensured, such as Figure 1 shown.

[0038] The piercing terminal structure 3 is placed in a pin crimping device, and the enameled wire led out of the stator winding is placed at the bending part of the piercing portion 33 of the piercing terminal structure 3, that is, the connection between the first clamping plate 331 and the second clamping plate 332. The piercing portion 33 is crimped by the pin crimping device to achieve a wrapping or clamping state of the enameled wire, and the piercing mechanism 5 of the piercing portion 33 is used to pierce the paint coating of the enameled wire, so as to achieve conduction between the winding enameled wire and the piercing terminal structure 3.

[0039] When the piercing terminal structure 3 is installed, it is placed vertically on the boss structure 2 as a whole, and then the sheath structure 6 is put on to press the connecting part 32 at the bottom of the piercing terminal structure 3, which serves to fix the pin and prevent it from moving during injection molding. At the same time, the installation size in the axial space can also be guaranteed. The enameled wire is led out from the outlet groove 4 of the boss structure 2, and the piercing part 33 is located at the outer peripheral wall of the boss structure 2. The combination of these two positions can make the piercing part 33 realize the piercing function more conveniently and quickly. This design can optimize the traditional process, from the original process of "stripping paint-winding wire-soldering" to "crimping the piercing terminal structure 3", without the need for the traditional process of stripping paint, winding wire, soldering and other related complex processes, thereby simplifying the assembly process of the stator assembly, reducing manual use, reducing labor costs, and improving production efficiency.

[0040] As an optional implementation method of an embodiment of the present invention, there are an inner surface 621 and an outer surface 622 on the boss structure connecting portion 62. The inner surface 621 is closer to the center of the stator frame body 1 relative to the outer surface 622, and the outer surface 622 is an arc surface. The setting of the arc surface can better connect the boss structure 2 where the piercing terminal structure 3 is placed and its adjacent boss structure 2, so that the connection is more reliable and the structure is more stable.

[0041] A motor provided by an embodiment of the present invention includes the above-mentioned stator assembly. The motor of the present invention can pierce the paint on the surface of the enameled wire by setting a piercing mechanism 5 on the piercing portion 33 of the piercing terminal structure 3, so as to realize electrical conduction between the enameled wire and the piercing terminal structure 3. After the piercing terminal structure 3 is crimped with the enameled wire and the piercing function is realized, during installation, the piercing terminal structure 3 is vertically placed in the boss structure 2 of the stator assembly, and at the same time, the sheath structure 6 is used to press the connection portion 32 at the bottom of the piercing terminal structure 3 to fix the pin to prevent it from moving during injection molding. The enameled wire is led out from the wire outlet groove 4 of the boss structure 2, and the piercing portion 33 is located at the outer circle of the stator frame body 1, so that the piercing portion 33 can pierce the paint of the enameled wire more easily and quickly.

[0042] In addition, an embodiment of the present invention further provides an electrical device, including the above-mentioned motor. Since the motor has the above-mentioned effects, the electrical device including the motor also has corresponding effects, which will not be described in detail here.

[0043] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A stator assembly, characterized in that: It comprises a stator frame body, a boss structure and a piercing terminal structure, wherein the boss structure is arranged at the end of the stator frame body, wherein: The piercing terminal structure comprises a pin body, a connecting portion and a piercing portion, wherein the pin body is connected to the piercing portion through the connecting portion and the pin body and the piercing portion are in different planes, the piercing terminal structure is mounted on the boss structure, the enameled wire can be led out through the boss structure into the piercing portion and the piercing portion can pierce the paint coating of the enameled wire to conduct the enameled wire and the piercing terminal structure; The boss structure includes a boss, a first connecting plate and a second connecting plate, two ends of two adjacent bosses in each boss structure are connected by the first connecting plate and the second connecting plate respectively, and a wire outlet groove for leading out the enameled wire is formed between the two adjacent second connecting plates, the first connecting plate is located near the outer peripheral wall of the stator frame body, the piercing terminal structure is installed on the boss and the piercing portion abuts against the upper end surface of the first connecting plate; The puncturing portion includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are connected, the first clamping plate is connected to the connecting portion and the first clamping plate abuts against the upper end surface of the first connecting plate, and the first clamping plate and the second clamping plate are both provided with puncturing mechanisms. Under the action of external force, the second clamping plate can squeeze the enameled wire between the first clamping plate and the second clamping plate in a direction close to the first clamping plate and can puncture the paint coating of the enameled wire through the puncturing mechanism.

2. The stator assembly according to claim 1, characterized in that: The inner surfaces of the first clamping plate and the second clamping plate are provided with a plurality of first strip grooves in the same direction and a plurality of second strip grooves in the same direction, and the piercing mechanism is the first strip grooves and the second strip grooves arranged crosswise to form a plurality of protrusions.

3. The stator assembly according to claim 1, characterized in that: The first clamping plate includes a connecting section and an abutting section, the connecting section is connected to the connecting portion and the first clamping plate is in an inverted "L" shape, one end of the abutting section is connected to the connecting section, and the other end of the abutting section is connected to the second clamping plate, and the piercing mechanism is provided on the abutting section and the second clamping plate. When the piercing terminal structure is installed on the boss structure, the connecting section is located on the boss, and the lower end face of the abutting section abuts against the upper end face of the first connecting plate.

4. The stator assembly according to claim 1, characterized in that: The connecting portion is vertically connected to the plug-in pin body, and the first clamping plate is parallel to the plug-in pin body.

5. The stator assembly according to claim 1, characterized in that: When the second clamping plate abuts against the first clamping plate under the action of external force, the lower end surface of the second clamping plate is located above the first connecting plate.

6. The stator assembly according to claim 1, characterized in that The stator assembly further comprises a sheath structure, which comprises a pin limiting portion and a boss structure connecting portion, wherein: The two ends of the pin limiting portion are respectively connected to a boss structure connecting portion, and the pin limiting portion and the boss structure connecting portion are made of insulating material. The pin limiting portion is provided with a pin through-hole that allows the pin to pass through. The pin limiting portion is located on the boss between the first connecting plate and the second connecting plate and is pressed above the connecting portion. The boss structure for placing the piercing terminal structure is connected to its adjacent boss structure through the boss structure connecting portion.

7. The stator assembly according to claim 6, characterized in that The boss structure connection portion has an inner surface and an outer surface. The inner surface is located closer to the center of the stator frame body than the outer surface, and the outer surface is a curved surface.

8. The stator assembly according to claim 1, characterized in that The height of the first connecting plate and the height of the second connecting plate are both higher than the height of the boss, and the distance between two adjacent second connecting plates in each boss structure is smaller than the distance between two adjacent first connecting plates.

9. A motor, characterized in that: Comprising the stator assembly according to any one of claims 1-8.

10. An electrical device, characterized in that: It comprises a motor, wherein the motor is the motor as claimed in claim 9.

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