Stator plastic package structure and outer rotor brushless motor

Abstract

The utility model discloses a stator plastic package structure and an outer rotor brushless motor, and the stator plastic package structure comprises a stator assembly and a terminal sheath. The stator assembly includes: a stator core; a first coil holder; a second coil holder; wherein one side, far away from the stator core, of the first coil holder is provided with a wiring terminal and a grounding terminal, and the wiring terminal and the grounding terminal are distributed adjacently; the terminal sheath sleeves the wiring terminal and the grounding terminal and is used for protecting the wiring terminal and the grounding terminal at the same time; the stator assembly and the terminal sheath are coated with a plastic coating layer, so that the stator assembly and the terminal sheath form a plastic package structure. According to the utility model, the wiring terminal and the grounding terminal are installed at one position in a centralized manner, and the wiring terminal and the grounding terminal are protected by using one terminal sheath, so that the welding of the outgoing line is more convenient, the length of the lead can be shortened, the use number of the terminal sheath can be reduced, and the overall production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor equipment technical field, concretely relates to a stator plastic package structure and outer rotor brushless motor. BACKGROUND

[0002] The outer rotor plastic package brushless motor includes a plastic package stator and a plastic package rotor sleeved outside the plastic package stator, wherein the plastic package stator includes a stator core, a stator winding and a stator plastic package body and the like, and the stator plastic package body encapsulates the stator core and the stator winding. Meanwhile, the stator plastic package body is also provided with a wiring terminal and a grounding terminal, and the wiring terminal and the grounding terminal are connected to the power supply and the ground through lead wires. However, for the current plastic package stator, for example, the stator plastic package structure and the motor of the outer rotor brushless motor disclosed in the prior art 202322788658.0, the wiring terminal and the grounding terminal are arranged in a dispersed manner, which not only makes it inconvenient to weld the lead-out wires, but also requires multiple terminal sheaths to protect the terminals, which may cause the problem of insufficient protection due to insecure installation of the terminal sheaths, and also increases the production cost. SUMMARY

[0003] The utility model embodiment provides a kind of stator plastic package structure and outer rotor brushless motor, to solve the problem of plastic package motor stator lead wire welding inconvenience, and reduce production cost.

[0004] The utility model embodiment provides a kind of stator plastic package structure, including stator assembly and terminal sheath;

[0005] The stator assembly includes:

[0006] A stator core;

[0007] A first wire rack is arranged on one side of the stator core along the central axis of the stator core;

[0008] A second wire rack is arranged on the other side of the stator core along the central axis of the stator core;

[0009] Wherein, the first wire rack is provided with a wiring terminal and a grounding terminal away from one side of the stator core, and the wiring terminal and the grounding terminal are adjacent to each other;

[0010] The terminal sheath is sleeved on the wiring terminal and the grounding terminal, for protecting the wiring terminal and the grounding terminal at the same time;

[0011] The stator assembly and the terminal sheath are coated with a plastic layer outside to form a plastic package structure.

[0012] Further, the first wire frame is provided with a plurality of mounting positions for placing the wiring terminals and grounding terminals around the edge of the side away from the stator core.

[0013] Further, the first wire frame is a circular wire frame, and the terminal sheath is an arc-shaped sheath, and the arc of the arc-shaped sheath is the same as the edge arc of the circular wire frame.

[0014] Further, the terminal sheath is provided with a plurality of terminal through holes for the wiring terminals and grounding terminals to extend wiring.

[0015] Further, the terminal sheath is provided with a positioning block near the side close to the first wire frame, and the first wire frame is provided with a positioning groove matched with the positioning block near the side close to the terminal sheath.

[0016] Further, each terminal through hole is provided with an open groove for avoiding wiring near one end of the first wire frame.

[0017] Further, the plastic package structure is provided with a blocking column for blocking the lead wires of the wiring terminals and grounding terminals on the side close to the terminal sheath.

[0018] Further, the number of the mounting positions is greater than or equal to the total number of the wiring terminals and grounding terminals, the number of the terminal through holes is consistent with the total number of the wiring terminals and grounding terminals, and the positions of the terminal through holes correspond to the positions of the mounting positions where the wiring terminals and grounding terminals are placed.

[0019] Further, the wiring terminals are provided in plurality, and the grounding terminal is provided in one, and the plurality of wiring terminals and the one grounding terminal are continuously distributed in the mounting positions.

[0020] The utility model embodiment further provides a brushless motor with outer rotor, comprising the stator plastic package structure of any one of the above.

[0021] The utility model embodiment provides a kind of stator plastic package structure and outer rotor brushless motor, the stator plastic package structure, including stator assembly and terminal sheath;The stator assembly includes: stator core;First wire holder, along the center axis of the stator core is arranged on the side of the stator core;Second wire holder, along the center axis of the stator core is arranged on the other side of the stator core;Wherein, the first wire holder is provided with terminal and ground terminal away from the side of the stator core, and the terminal and ground terminal adjacent distribution;The terminal sheath is sleeved on the terminal and ground terminal, for simultaneously protecting the terminal and ground terminal;The stator assembly and terminal sheath outside are covered with plastic layer, to form plastic package structure with the stator assembly and terminal sheath.The utility model embodiment by installing the terminal and ground terminal in one place in concentration, and using a terminal sheath to protect terminal and ground terminal, so that not only welding lead wire is more convenient, but also can shorten lead length and reduce the use number of terminal sheath, to reduce the overall production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawing needed to be used in embodiment description, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0023] Figure 1 The structure diagram of the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0024] Figure 2 The explosion diagram of the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0025] Figure 3 The structure diagram of the first wire holder in the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0026] Figure 4 The structure diagram of the terminal sheath in the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0027] Figure 5 The structure diagram of the terminal sheath in the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0028] Figure 6 Another structure diagram of the stator plastic package structure provided by the utility model embodiment is shown in the figure.

[0029] Figure 7The utility model provides a structure schematic drawing of outer rotor brushless motor for the embodiment of the utility model.

[0030] Figure 8 The utility model provides an explosion schematic drawing of outer rotor brushless motor for the embodiment of the utility model. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the recited features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0033] It should also be understood that the terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the specification and the appended claims of the utility model, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be further understood that the term "and / or" as used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0035] Please see Figure 1 and Figure 2 The utility model provides a stator plastic package structure, including stator subassembly 1 and terminal sheath 2 for the embodiment of the utility model provides a stator plastic package structure, including stator subassembly 1 and terminal sheath 2;

[0036] Stator subassembly 1 includes:

[0037] Stator core 11;

[0038] First wire holder 12 is arranged on one side of stator core 11 along the central axis of stator core 11;

[0039] Second wire holder 13 is arranged on the other side of stator core 11 along the central axis of stator core 11;

[0040] The first wire frame 12 is provided with a wiring terminal 14 and a grounding terminal 15 on the side away from the stator core 11, and the wiring terminal 14 and the grounding terminal 15 are adjacently distributed.

[0041] The terminal sheath 2 is sleeved on the wiring terminal 14 and the grounding terminal 15 to simultaneously protect the wiring terminal 14 and the grounding terminal 15.

[0042] The stator assembly 1 and the terminal sheath 2 are externally coated with a plastic coating layer to form a plastic package structure.

[0043] In this embodiment, the stator plastic package structure includes the stator assembly 1 and the terminal sheath 2. The stator assembly 1 includes the stator core 11, the first wire frame 12 and the second wire frame 13 provided on the side of the stator core 11 respectively, and the wiring terminal 14 and the grounding terminal 15 are provided on the first wire frame 12. The terminal sheath 2 is provided on the wiring terminal 14 and the grounding terminal 15 to protect the wiring terminal 14 and the grounding terminal 15. In addition, the stator assembly 1 and the terminal sheath 2 are externally provided with a plastic coating layer to plastic package the stator assembly 1 and the terminal sheath 2, so as to obtain the stator plastic package structure, as shown in Figure 6 .

[0044] This embodiment is improved based on the patent document 202322788658.0. The wiring terminal 14 and the grounding terminal 15 are installed in one place, and only one terminal sheath 2 is used to protect the wiring terminal 14 and the grounding terminal 15. This not only makes it more convenient to weld the lead-out wire, but also shortens the lead length and reduces the number of terminal sheaths 2, thereby reducing the overall production cost.

[0045] In an embodiment, as shown in Figure 3 , the first wire frame 12 is provided with a plurality of installation positions 121 for placing the wiring terminal 14 and the grounding terminal 15 on the edge of the side away from the stator core 11.

[0046] The design of these installation positions 121 enables the wiring terminal 14 and the grounding terminal 15 to be stably installed on the first wire frame 12 and not easily loose or fall off. In actual application, the size and shape of each installation position 121 are matched with the wiring terminal 14 and the grounding terminal 15 to ensure good installation effect and electrical connection performance. In addition, the installation position 121 can also consider the heat dissipation and other use requirements, so that the wiring terminal 14 and the grounding terminal 15 can effectively dissipate heat when working, avoiding overheating and improving the reliability and service life of the entire stator plastic package structure.

[0047] In an embodiment, in combination with Figure 4 andFigure 5 The first wire holder 12 is a circular wire holder, and the terminal sheath 2 is an arc-shaped sheath with an arc that is the same as the edge arc of the circular wire holder.

[0048] In this embodiment, the arc of the terminal sheath 2 is set to be the same as the arc of the first wire holder 12, so that the arc-shaped terminal sheath 2 can closely fit the edge of the circular first wire holder 12. In this way, not only can the fixing effect between the terminal sheath 2 and the first wire holder 12 be enhanced, but also the overall aesthetics can be improved. In addition, since the arc of the terminal sheath 2 matches the edge arc of the first wire holder 12, impurities such as dust and moisture can be effectively prevented from entering the area where the wiring terminal 14 and the grounding terminal 15 are located, thereby improving the overall protection level of the stator plastic package structure. At the same time, this design also makes the arc-shaped sheath more convenient and efficient during installation and disassembly, improving production efficiency.

[0049] In actual application scenarios, the length of the terminal sheath 2 can be set according to the number of wiring terminals 14 and grounding terminals 15, or can be set according to actual needs to meet the needs of different application scenarios. For example, in application scenarios that require a large number of wires or signal lines to be connected, the length of the terminal sheath 2 can be appropriately increased to accommodate more wiring terminals 14 and grounding terminals 15. In some application scenarios where space is limited or the requirements for wiring are not high, a shorter terminal sheath 2 can be selected to save space and cost. In addition, the material of the terminal sheath 2 can also be selected according to actual needs. For example, in some harsh environments such as high temperature, humidity or corrosive environments, a material with high temperature resistance, moisture resistance or corrosion resistance can be selected to make the terminal sheath 2 to ensure its long-term stable operation. In some application scenarios with strict requirements for weight and cost, a lightweight and low-cost material can be selected to make the terminal sheath 2. In summary, the design of the terminal sheath 2 not only considers the matching degree with the first wire holder 12 and the protection level, but also fully considers the needs and limitations in actual application scenarios, thereby providing a flexible and practical stator plastic package structure solution.

[0050] In an embodiment, as shown in Figure 4 The terminal sheath 2 is provided with a plurality of terminal through holes 21 for the wiring terminals 14 and grounding terminals 15 to extend out.

[0051] By setting the terminal through hole 21, not only the wiring terminal 14 and the grounding terminal 15 can be protected, but also the terminal sleeve 2 can ensure that the specific part of the wiring terminal 14 and the grounding terminal 15 is exposed during the plastic sealing process, so as to facilitate the connection of the external lead wire. Preferably, the edge of the terminal through hole 21 is polished to prevent damage to the wire or signal line during wiring, further ensuring the reliability and safety of wiring. At the same time, in order to avoid the influence of external factors such as dust and moisture on the wiring terminal 14 and the grounding terminal 15, a certain sealing structure such as a sealing ring or sealing glue can be set around the terminal through hole 21 to ensure the sealing performance of the terminal sleeve 2 after plastic sealing. In addition, the terminal through hole 21 on the terminal sleeve 2 can also be customized according to different wiring requirements, such as number, size and position, to meet the wiring requirements in different application scenarios.

[0052] In an embodiment, in combination with Figure 3 and Figure 5 , the terminal sleeve 2 is provided with a positioning block 22 near one side of the first bobbin 12, and the first bobbin 12 is provided with a positioning groove 122 matched with the positioning block 22 near one side of the terminal sleeve 2.

[0053] By setting the positioning block 22 and the positioning groove 122, the precise alignment between the terminal sleeve 2 and the first bobbin 12 can be ensured, thereby improving the overall stability and reliability of the stator plastic sealing structure. During the plastic sealing process, the positioning block 22 can be accurately embedded in the positioning groove 122, avoiding the relative displacement between the terminal sleeve 2 and the first bobbin 12, and ensuring the close combination between the stator assembly 1 and the terminal sleeve 2 after plastic sealing. In addition, the design of the positioning block 22 and the positioning groove 122 also simplifies the installation process, thereby further improving the production efficiency. During the plastic sealing process, the positioning block 22 only needs to be aligned with the positioning groove 122, and the installation of the terminal sleeve 2 and the first bobbin 12 can be easily completed without additional fixing steps or tools, reducing the operation difficulty and cost.

[0054] In an embodiment, each terminal through hole 21 is provided with an open groove 211 near one end of the first bobbin 12 for avoiding wiring.

[0055] Since in actual production process, the enameled wire is first wound on the column of the wiring terminal 14, then overlapped on the groove of the wiring terminal 14, and then wound on the first bobbin 12, the open groove 211 is set on the terminal sleeve 2 in this embodiment to avoid the enameled wire wound on the column of the wiring terminal 14.

[0056] In an embodiment, as Figure 6As shown, one side of the plastic sealing structure close to the terminal sheath 2 is provided with a blocking column 3 for blocking the outgoing wires of the wiring terminal 14 and the grounding terminal 15.

[0057] By setting the blocking column 3, the exposed parts of the outgoing wires connected to the wiring terminal 14 and the grounding terminal 15 can be prevented from interfering with the rotating shaft of the plastic sealing rotor 4, thereby ensuring the reliability and safety of the motor. In actual applications, the number, position, and height of the blocking column 3 can be flexibly adjusted according to the number, size of the wiring terminal 14 and the grounding terminal 15, and the specifications of the outgoing wires, to meet the needs of different application scenarios.

[0058] In an embodiment, the number of the mounting positions 121 is greater than or equal to the sum of the number of the wiring terminal 14 and the grounding terminal 15, the number of the terminal through holes 21 corresponds to the sum of the number of the wiring terminal 14 and the grounding terminal 15, and the positions of the terminal through holes 21 correspond to the positions of the mounting positions 121 where the wiring terminal 14 and the grounding terminal 15 are placed.

[0059] This design ensures that each wiring terminal 14 and grounding terminal 15 can be accurately and correctly corresponded to the corresponding mounting position 121 and terminal through hole 21, avoiding installation errors or omissions. At the same time, since the number of the mounting positions 121 is greater than or equal to the sum of the number of the wiring terminal 14 and the grounding terminal 15, this redundant design provides additional installation flexibility and fault tolerance space, so that in certain cases, even if a wiring terminal 14 or a grounding terminal 15 has a problem, it can be easily replaced or adjusted without affecting the normal work of other terminals. In addition, the positions of the terminal through holes 21 correspond to the positions of the mounting positions 121 accurately, further ensuring the accuracy and stability of the wiring terminal 14 and the grounding terminal 15 during installation, improving the reliability and durability of the entire stator plastic sealing structure. Moreover, this accurate correspondence design helps to simplify the installation process, reduce the installation time, and improve the work efficiency. During the installation process, the workers only need to place the wiring terminal 14 and the grounding terminal 15 according to the preset positions on the corresponding mounting positions 121, and then fix and connect through the terminal through holes 21, to complete the installation. This simple and fast installation method not only reduces the operation difficulty, but also reduces the failure rate caused by improper installation, further improving the overall performance of the motor.

[0060] In specific embodiments, the wiring terminals 14 are provided in plurality, the grounding terminal 15 is provided in one, the plurality of wiring terminals 14 and the one grounding terminal 15 are continuously distributed in the mounting positions 121. Specifically, the wiring terminals 14 are provided in four, and the grounding terminal 15 is provided in one. The four wiring terminals 14 can meet the wiring requirements of various circuits, and the provision of the one grounding terminal 15 ensures the safe grounding of the circuit, preventing circuit failure or safety hazards caused by poor grounding. In addition, the continuously distributed wiring terminals 14 and grounding terminals 15 are more convenient to install, reducing the installation steps and time, and improving the production efficiency. At the same time, this continuous distribution method is also conducive to subsequent maintenance and repair work, so that workers can quickly and accurately locate each terminal to perform necessary inspection or replacement.

[0061] The utility model embodiment further provides a kind of outer rotor brushless motor, including the stator plastic package structure as any one of the above. Specifically, in combination with Figure 7 And Figure 8 The outer rotor brushless motor further includes plastic package rotor 4 and rear end cover 5, and the stator plastic package structure is fixed to the stator position of motor, and forms magnetic field interaction with plastic package rotor 4, drives plastic package rotor 4 to rotate. The outer rotor brushless motor, based on the setting of stator plastic package structure, not only makes the process of welding lead wire become simple and convenient, but also has significant cost advantage in production finished product.

[0062] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0063] It is further noted that the terminology "first", "second" and the like used in the specification are merely used for differentiating one entity or action from another, and do not necessarily imply any actual physical or logical relationship or order between such entities or actions. Moreover, the use of the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements is not required to comprise only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element preceded by "comprises a..." does not, without further restriction, preclude the existence of additional elements of the same nature as those recited.

Claims

1. A stator plastic package structure, characterized in that, The stator assembly and the terminal sheath are coated with a plastic layer outside to form a plastic package structure. The edge of the first wire holder away from the stator core is circumferentially provided with a plurality of installation positions for placing the terminal and grounding terminals. The first wire holder is a circular wire holder, and the terminal sheath is an arc-shaped sheath. The terminal sheath is provided with a plurality of terminal through holes for the terminal and grounding terminals to extend out for wiring. The terminal sheath is provided with a positioning block on the side close to the first wire holder, and the first wire holder is provided with a positioning groove matched with the positioning block on the side close to the terminal sheath. Each terminal through hole is provided with an open groove close to one end of the first wire holder for avoiding wiring. The plastic package structure is provided with a blocking column close to the terminal sheath for blocking the lead-out wires of the terminal and grounding terminals. The number of the installation positions is greater than or equal to the total number of the terminal and grounding terminals, the number of the terminal through holes is consistent with the total number of the terminal and grounding terminals, and the positions of the terminal through holes correspond to the positions of the installation positions where the terminal and grounding terminals are placed.

2. The stator plastic package structure according to claim 1, wherein, The terminal is provided with a plurality of terminal and one grounding terminal, and the plurality of terminal and the grounding terminal are continuously distributed in the installation positions.

3. The stator plastic package structure of claim 1, wherein, The stator plastic package structure comprises the stator plastic package structure according to any one of claims 1-9.

4. The stator plastic package structure of claim 2, wherein, ​ 5. The stator plastic package structure of claim 1, wherein, ​ 6. The stator plastic package structure of claim 4, wherein, ​ 7. The stator plastic package structure of claim 1, wherein, ​ 8. The stator plastic package structure of claim 4, wherein, ​ 9. The stator plastic package structure of claim 1, wherein, ​ 10. An external rotor brushless motor characterized by, ​

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