Wiring structure and motor

Abstract

The utility model relates to the technical field of motor wiring, in particular to a wiring structure and a motor, the wiring structure comprises a first wire pressing plate and a second wire pressing plate, the first wire pressing plate is fixedly arranged on a motor body, and the outer end of the first wire pressing plate is provided with a first groove; the second wire pressing plate is fixedly arranged on the junction box, and a second groove is formed in one end, facing the first wire pressing plate, of the second wire pressing plate; the first groove and the second groove are matched to form a via hole, and a motor lead passes through the via hole from the motor cavity to the wiring cavity; and a sealing element is pressed between the first wire pressing plate and the second wire pressing plate so as to seal and isolate the wiring cavity from the motor cavity. According to the wiring structure provided by the utility model, simple, low-cost and reliable sealing of the wiring cavity and the motor cavity is realized, and the risk of condensation in the wiring cavity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor wiring technology, specifically to a wiring structure and a motor. Background Technology

[0002] Typically, motors are designed with a junction box containing terminal blocks or wiring boards to achieve electrical connection between the external power cable and the motor stator winding leads. Inside the junction box, the copper terminals of the power cable and the copper terminals of the motor stator winding leads are bolted together and fixed to the terminal blocks or wiring boards, with each copper terminal exposed without protection.

[0003] When a motor is running, it generates a significant amount of heat within its cavity. If the junction box cavity is connected to the motor cavity, warm air with a certain level of humidity will be transferred into the junction box cavity. When the motor stops working, due to the large temperature difference between the external environment and the air inside the junction box, condensation easily forms on the inner wall of the junction box cavity. Severe condensation can lead to short circuits in the copper terminals, insulation failure, and motor malfunction, affecting the motor's safety performance and lifespan. Therefore, a sealing design is generally implemented between the motor cavity and the junction box cavity to reduce the risk of condensation within the junction box cavity. Currently, common methods include sealing with copper pillars and sealing rings or rubber sleeves, as well as sealing with sealant. However, these methods suffer from high costs, installation difficulties, and implementation challenges. Utility Model Content

[0004] To address the technical problems of high cost and difficult installation in the existing sealing structure between the motor cavity and the wiring cavity, this utility model proposes a wiring structure and motor that can achieve sealed isolation between the wiring cavity and the motor cavity, and has a simple structure and low cost.

[0005] The technical solution of this utility model:

[0006] A wiring structure, comprising:

[0007] The first pressure plate is fixed on the motor body, and the outer end of the first pressure plate is provided with a first groove.

[0008] The second pressure plate is fixed on the junction box, and a second groove is provided on one end of the second pressure plate facing the first pressure plate.

[0009] The first groove and the second groove cooperate to form a through hole, through which the motor lead wire passes from the motor cavity to the wiring cavity; a sealing element is also pressed between the first pressure plate and the second pressure plate to seal and isolate the wiring cavity from the motor cavity.

[0010] Furthermore, the motor lead is a flexible wire; the portion of the motor lead pressed by the first and second pressure plates has a rubber insulating sheath.

[0011] Furthermore, there are multiple motor leads, and there are also multiple first and second grooves; the multiple first grooves are evenly spaced, and the multiple second grooves are evenly spaced; both the first and second grooves are arc-shaped grooves.

[0012] Furthermore, a mounting base is fixed on the motor body, the first pressure plate is disposed inside the mounting base, and an inclined first mounting edge is formed on the mounting base; a second pressure plate is disposed inside the junction box, and an inclined second mounting edge is correspondingly formed on the junction box.

[0013] Furthermore, the first mounting edge and the second mounting edge are respectively provided with mounting holes, and after the junction box is installed, the first mounting edge and the second mounting edge are sealed.

[0014] Furthermore, the outer end of the first pressure plate protrudes from the first mounting edge, and the end of the second pressure plate facing the first pressure plate is recessed into the second mounting edge.

[0015] Furthermore, a first pressing slope and a second pressing slope that cooperate with each other are formed on both sides of the protruding end of the first pressing plate and both sides of the recessed end of the second pressing plate, respectively.

[0016] Furthermore, the wiring cavity is also provided with an adapter, which is used to fix and electrically connect the lead wire terminals to the motor lead wire terminals in conjunction with the locking bolts; the junction box also includes a cover plate to open and close the wiring cavity.

[0017] Furthermore, the junction box has bidirectional cable outlets.

[0018] In another aspect, the present invention provides a motor including a wiring structure as described in any of the above; further, the first pressure plate is fixed to the end cover of the motor.

[0019] By adopting the above technical solution, the wiring structure and motor provided by this utility model have the following advantages compared with the prior art: The wiring structure of this utility model, by pressing the sealing element and the motor lead with the first pressure plate and the second pressure plate, seals and isolates the wiring cavity from the motor cavity, thereby reducing the risk of condensation in the wiring cavity; moreover, sealing and isolation can be achieved when installing the junction box, the structure is simple and the installation is convenient; in addition, since the motor lead is also pressed, the vibration amplitude of the motor lead during motor operation is reduced, the risk of electrical connection failure at both ends of the motor lead due to vibration is reduced, and the reliability of the motor is improved. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the overall structure of the motor of this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of section AA in the diagram;

[0022] Figure 3 This is a cross-sectional view of the motor leads in this embodiment;

[0023] Figure 4 This is a perspective view of the mounting base in this embodiment.

[0024] in,

[0025] First pressure plate 1, first groove 11, first pressing slope 12, pressing plane 13; second pressure plate 2, second groove 21, second pressing slope 22; wiring cavity 31, motor cavity 32; motor lead wire 4, copper wire 41, rubber insulation 42, pressing structure 43, connecting terminal 44; rear end cover 5, mounting base 51, first mounting edge 511, mounting hole 512, stator winding 52; junction box 6, second mounting edge 61, cover plate 62, wire outlet 63; adapter 71, locking bolt 72, lead wire 73, wiring terminal 74. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0030] Example 1:

[0031] like Figure 1-2 As shown, this embodiment provides a wiring structure suitable for a motor. The wiring structure includes a first pressure plate 1 and a second pressure plate 2. The first pressure plate 1 is bolted or integrally formed and fixed to the motor body, for example, fixed to the rear end cover 5 from which the motor lead 4 is led. A first groove 11 is formed at the outer end of the first pressure plate 1, i.e., the end away from the motor body. Further, the second pressure plate 2 is bolted or integrally formed and fixed to a junction box 6. A second groove 21 is provided at the outer end of the second pressure plate 2, i.e., the end facing the first pressure plate 1 during installation.

[0032] The junction box 6 can be assembled onto the motor body. During installation, the second pressure plate 2 is aligned with the first pressure plate 1. The second groove 21 on the second pressure plate 2 can cooperate with the first groove 11 on the first pressure plate 1 to form a through hole. The through hole is adapted to the motor lead 4. The motor lead 4 is led out from the stator winding 52 in the motor cavity 32 and passes through the through hole to the upper junction cavity 31.

[0033] During installation, the motor lead 4 can be placed in the first groove 11 on the first pressure plate 1, and then the junction box 6 can be installed, with the second pressure plate 2 aligned with the first pressure plate 1. A sealing element is also provided between the first pressure plate 1 and the second pressure plate 2. The sealing element can be, but is not limited to, sealant or sealing strip, and is set on the outer end face of the first pressure plate 1 and / or the second pressure plate 2. After the junction box 6 is installed, the sealing element is pressed by the first pressure plate 1 and the second pressure plate 2, so that the wiring cavity 31 on one side of the first pressure plate 1 and the second pressure plate 2 is sealed and isolated from the motor cavity 32 on the other side or the cavity connected to the motor cavity 32.

[0034] Thus, the wiring structure provided in this embodiment, by pressing the sealing element and the motor lead 4 with the first pressure plate 1 and the second pressure plate 2, seals and isolates the wiring cavity 31 from the motor cavity 32, reducing the risk of condensation inside the wiring cavity 31; moreover, the sealing isolation can be achieved when installing the junction box 6, resulting in a simple structure and convenient installation. Furthermore, since the motor lead 4 is also pressed, the vibration amplitude of the motor lead 4 during motor operation is reduced, lowering the risk of electrical connection failure at both ends of the motor lead 4 due to vibration, and improving the reliability of the motor.

[0035] In this embodiment, the motor lead 4 is preferably a flexible wire, specifically, as shown below. Figure 3 The motor lead 4 includes a copper wire 41 located in the middle and a rubber insulating sheath 42 wrapping the copper wire 41. Thus, during installation of the junction box 6, the first groove 11 of the first pressure plate 1 and the second groove 21 of the second pressure plate 2 press against the rubber insulating sheath 42 of the motor lead 4, thereby achieving a sealing effect at the motor lead 4. The portion between the first pressure plate 1 and the second pressure plate 2, excluding the motor lead 4, can be sealed by using the sealing element. The sealing element is preferably formed using CIPG dispensing technology, which is highly efficient and has good adaptability and consistency.

[0036] like Figure 3 As shown, the copper wire 41 in the middle of the motor lead 4 is a stranded copper wire, wrapped with rubber insulation 42. It has a pressed square structure 43 at both ends, one end is welded to the motor stator, and the other end is welded to a connecting terminal 44. This connecting terminal 44 is used for subsequent electrical connection with the wiring terminal 74 of the lead wire 73. This type of flexible wire structure is suitable for flat wire motors. Alternatively, the copper wire 41 in the motor lead 4 can be drawn from loose wires on the motor stator, and then wrapped with rubber insulation 42, achieving the same sealing effect; then the connecting terminal 44 is welded to its outer end.

[0037] In this embodiment, there are multiple motor leads 4, for example, three corresponding to three phases; there are also multiple first grooves 11 and second grooves 21, for example, the first grooves 11 and second grooves 21 are matched one-to-one to form three through holes. Preferably, the multiple motor leads 4, the first grooves 11, and the second grooves 21 are evenly spaced, and a pressing plane 13 is formed between two adjacent first grooves 11 and two adjacent second grooves 21. The shapes of the first grooves 11 and the second grooves 21 can be set as needed to better press the motor leads 4. For example, for motor leads 4 in a near-circular state, the first grooves 11 and the second grooves 21 are preferably arc-shaped grooves.

[0038] like Figure 1 , 4As shown, in this embodiment, a mounting base 51 is fixed to the motor body by bolts or integral molding. The first pressure plate 1 is disposed within the mounting base 51, and an inclined first mounting edge 511 is also formed on the mounting base 51. The cavity within the mounting base 51 communicates with the motor cavity 32, allowing the motor lead 4 to pass through the motor cavity 32 into the mounting base 51. Further, a second pressure plate 2 is disposed within the junction box 6, and an inclined second mounting edge 61 is correspondingly formed on the junction box 6. Mounting holes 512 are respectively provided on the first mounting edge 511 and the second mounting edge 61, which can be used with bolts to fix the junction box 6 to the mounting base 51. Furthermore, a rubber ring or sealant can also be provided between the first mounting edge 511 and the second mounting edge 61 to ensure a seal between the first mounting edge 511 and the second mounting edge 61 after the junction box 6 is installed. In this embodiment, the mounting surfaces of the mounting base 51 and the junction box 6 are set as bevels. While ensuring that the clamping effect can be achieved, the joint surface between the two is reduced, making it easier to achieve a reliable seal. Moreover, it makes the lead-out and wiring operations of the motor lead 4 more convenient.

[0039] Preferably, in this embodiment, the outer end of the first pressure plate 1 protrudes beyond the first mounting edge 511, while the end of the second pressure plate 2 facing the first pressure plate 1 is correspondingly recessed into the second mounting edge 61; this allows the motor lead 4 to be pulled out to a certain length, facilitating upward bending and other operations required during wiring. Further, as... Figure 2 As shown, the first pressure plate 1 has protruding ends on both sides, and the second pressure plate 2 has recessed ends on both sides, respectively forming a first pressing slope 12 and a second pressing slope 22 that cooperate with each other; since the second pressure plate 2 is pressing towards the first pressure plate 1, the cooperation of the slopes allows the seal between the two to be reliably pressed under force.

[0040] like Figure 1 As shown, the wiring cavity 31 in this embodiment is also provided with an adapter 71. The adapter 71 can be disposed on the first pressure plate 1 and is used to fix and electrically connect the wiring terminal 74 of the lead wire 73 to the connection terminal 44 of the motor lead wire 4 in conjunction with the locking bolt 72. The junction box 6 also includes a cover plate 62, which is disposed on the top, so that the wiring cavity 31 can be opened for wiring operations and closed after wiring is completed. In addition to the top cover plate 62 and the bottom first pressure plate 1 and second pressure plate 2, the junction box 6 and the mounting base 51 together form a surrounding plate to form the wiring cavity 31; a cavity communicating with the motor cavity 32 is formed below the first pressure plate 1 and the second pressure plate 2.

[0041] Furthermore, in this embodiment, a bidirectional cable outlet 63 is formed on the junction box 6, that is, the cable can be output in two directions in the junction box 6 through a single mold, and the lead wire 73 can be output as needed, thereby improving versatility.

[0042] As can be seen from the above, the wiring structure provided in this embodiment achieves a simple, low-cost, and reliable seal between the wiring cavity and the motor cavity, reducing the risk of condensation inside the wiring cavity.

[0043] Example 2:

[0044] This embodiment provides a motor including the wiring structure described in Embodiment 1. Specifically, after the stator is installed in the motor cavity 32, the rear end cover 5 is closed, and the motor lead 4 is led out from the mounting base 51 on the rear end cover 5. Then, the junction box 6 is installed, and the junction box 6 and the mounting base 51 are fitted at an angle and locked in place by bolts; and the second pressure plate 2 on the junction box 6 is pressed against the first pressure plate 1 on the mounting base 51, which, together with the flexible motor lead 4 and the sealing element, achieves a seal between the two. This achieves a sealed isolation between the wiring cavity 31 and the motor cavity 32; and by pressing the motor lead 4, its sway is reduced, improving the reliability of the motor. The motor lead 4 is bent upward into the wiring cavity 31, and an electrical connection is achieved with the external lead 73 through the adapter 71 and the locking bolt 72.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wiring structure, characterized by, include: The first pressure plate (1) is fixed on the motor body, and the outer end of the first pressure plate (1) is provided with a first groove (11); The second pressure plate (2) is fixed on the junction box (6), and a second groove (21) is provided on one end of the second pressure plate (2) facing the first pressure plate (1); The first groove (11) and the second groove (21) cooperate to form a through hole, through which the motor lead (4) passes from the motor cavity (32) to the wiring cavity (31); a sealing element is also pressed between the first pressure plate (1) and the second pressure plate (2) to seal and isolate the wiring cavity (31) from the motor cavity (32).

2. The wiring structure according to claim 1, characterized by The motor lead (4) is a flexible wire; the part of the motor lead (4) pressed by the first pressure plate (1) and the second pressure plate (2) has a rubber insulation layer (42).

3. The wiring structure according to claim 1, wherein There are multiple motor leads (4), and there are also multiple first grooves (11) and second grooves (21); the multiple first grooves (11) are evenly spaced, and the multiple second grooves (21) are evenly spaced; the first grooves (11) and the second grooves (21) are both arc-shaped grooves.

4. The wiring structure according to claim 1, wherein A mounting base (51) is fixed on the motor body, and the first pressure plate (1) is provided inside the mounting base (51). An inclined first mounting edge (511) is formed on the mounting base (51). A second pressure plate (2) is provided inside the junction box (6), and an inclined second mounting edge (61) is formed on the junction box (6).

5. The wiring structure according to claim 4, wherein The first mounting edge (511) and the second mounting edge (61) are respectively provided with mounting holes (512). After the junction box (6) is installed, the first mounting edge (511) and the second mounting edge (61) are sealed.

6. The wiring structure according to claim 4, wherein The outer end of the first pressure plate (1) protrudes from the first mounting edge (511), and the end of the second pressure plate (2) facing the first pressure plate (1) is recessed into the second mounting edge (61).

7. The wiring structure according to claim 6, wherein On both sides of the protruding end of the first pressure plate (1) and on both sides of the recessed end of the second pressure plate (2), a first pressing slope (12) and a second pressing slope (22) that cooperate with each other are formed respectively.

8. The wiring structure according to claim 1, wherein The wiring cavity (31) is also provided with an adapter (71), which is used to fix and electrically connect the wiring terminal (74) of the lead wire (73) to the connection terminal (44) of the motor lead wire (4) in conjunction with the locking bolt (72); the junction box (6) also includes a cover plate (62) to open and close the wiring cavity (31).

9. The wiring structure according to claim 1 or 8, wherein The junction box (6) has a bidirectional cable outlet (63).

10. An electric machine characterized by It includes the wiring structure as described in any one of claims 1-9; the first pressure plate (1) is fixed to the end cover of the motor.

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