Internal insulation support of motor

Abstract

The utility model discloses a motor internal insulation support comprising a stator body, a first support body, a second support body, and a plurality of groups of first winding grooves, second winding grooves, and third winding grooves which are successively arranged on the first support body and are successively deepened in grooving depth. The inner side of the first frame body and the inner side of the second frame body are respectively provided with winding parts which are in one-to-one correspondence with iron cores where the stator bodies are located. The device further comprises a plurality of positioning columns arranged on the outer wall of the first frame body, and each set of limiting columns is composed of an upper positioning piece, a middle positioning piece and a lower positioning piece and limiting assemblies arranged on the positioning pieces. According to the utility model, through the first winding groove, the second winding groove and the third winding groove of which the depths are gradually increased in sequence, the layered wire binding process of a plurality of enameled wires is realized, the design not only reduces a series of adverse effects caused by winding or serious crossing of the enameled wires, but also is matched with the structural design of the positioning column; and a layered guiding effect is further provided for the trend of the enameled wire.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an insulating bracket inside a motor. Background Art

[0002] The motor is mainly composed of two parts, a stator and a rotor. The stator can generate a rotating magnetic field by winding a coil with a conductive wire and act on the rotor. Its main function is to generate a magnetic field and is stationary when the motor is running. The rotating part is the rotor, and its main function is to generate electromagnetic torque and induced electromotive force. A motor insulating bracket for insulation protection is usually provided between the two. During the wire binding process of the existing motor insulating bracket, different enameled wires are prone to overlap and crossover. If the insulation effect of the enameled wire insulation layer is reduced due to the friction of other motor structures, the overlapping and crossing binding wires are prone to cause motor overheating, increased leakage inductance, reduced power, and even turn-to-turn short circuit. In addition, the internal coil of the existing motor often falls off or becomes loose due to vibration during operation. In order to solve the above problems, an internal insulating bracket of a motor is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide an insulating bracket inside a motor, which realizes the layered wire binding process of multiple enameled wires through a first winding groove, a second winding groove, and a third winding groove with successively increasing depths. This design not only reduces a series of adverse effects caused by winding or severe crossing of the enameled wires, but also cooperates with the structural design of the positioning column to further provide a layered guiding effect for the direction of the enameled wires, and plays a protective and anti-falling role for the enameled wires.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating bracket inside a motor, comprising: a stator body, a first frame body, and a second frame body, wherein the first frame body and the second frame body are respectively arranged at the top and the bottom of the stator body, and a plurality of groups of first winding grooves, second winding grooves, and third winding grooves are sequentially arranged on the first frame body and the groove depths are successively deepened; the inner sides of the first frame body and the second frame body are also respectively provided with winding parts corresponding to the iron core where the stator body is located; it also includes a plurality of positioning columns arranged on the outer wall of the first frame body, and each group of limiting columns consists of three positioning pieces distributed at the top, the middle, and the bottom, and a limiting assembly arranged on each of the positioning pieces; the limiting assembly includes a wire through groove, which is transversely opened at the bottom of the positioning piece, and a limiting baffle which can be opened and closed and is arranged at the bottom opening of the wire through groove.

[0005] Preferably, a first connecting portion, a second connecting portion and a third connecting portion are formed between each group of two of the first winding grooves, two of the second winding grooves and two of the third winding grooves, respectively.

[0006] Preferably, a tooth groove is also provided at the top of the wire passage groove.

[0007] Preferably, a plurality of limit strips are further provided on the lower portion of the outer wall of the first frame.

[0008] Preferably, the lower part of the second frame is further provided with a plurality of outlet terminal seats, and three limiting grooves longitudinally opened on each of the outlet terminal seats, and each limiting groove is a vertical groove structure with an open lower end.

[0009] Preferably, an anti-slip pad is arranged inside each limiting groove.

[0010] Preferably, the adjacent winding parts where the first frame and the second frame are located are provided with a plurality of card frames on their opposite surfaces, and a plurality of card slots are respectively opened on the top and bottom of the adjacent iron cores where the stator body is located, and the card slots are adapted to be plugged in with the card frames.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model realizes the hierarchical binding of the enameled wires through the simple design of the depth of the first winding groove, the second winding groove and the third winding groove, thereby reducing the occurrence of motor overheating, increased leakage inductance, reduced power, inter-turn short circuit and the like caused by the winding or serious crossing of the enameled wires, thereby improving the working quality of the motor, and in combination with the structural design of the positioning column, further providing a hierarchical guiding effect for the direction of the enameled wires, and at the same time, in combination with the limit assembly arranged on each positioning piece, further protecting and preventing the enameled wires passing through the interior thereof from falling off, thereby reducing the influence of motor vibration on the stability of the binding of the enameled wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model disassembled from the first perspective;

[0014] Figure 2 It is a schematic diagram of the third perspective structure of the utility model disassembled from a second perspective;

[0015] Figure 3 is a schematic diagram of the planar structure of the first frame and the second frame;

[0016] Figure 4 It is a schematic diagram of the enlarged structure of the limit component.

[0017] In the figure: 1. stator body; 2. first frame; 3. second frame; 4. winding part; 5. first winding groove; 6. second winding groove; 7. third winding groove; 8. positioning member; 9. limit strip; 10. clamping groove; 11. clamping frame; 12. outlet terminal seat; 13. limit groove; 14. wire through groove; 15. tooth groove; 16. limit baffle; 17. spring. DETAILED DESCRIPTION

[0018] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0019] See also Figures 1 to 4 The utility model preferably provides a technical solution: an internal insulating bracket of a motor, comprising: a stator body 1, a first frame 2, and a second frame 3, wherein the first frame 2 and the second frame 3 are respectively arranged at the top and the bottom of the stator body 1, and a plurality of groups of first winding grooves 5, second winding grooves 6, and third winding grooves 7 are sequentially arranged on the first frame 2 and the groove depths are successively deepened; the first frame 2 and the second frame 3 are also respectively provided with winding parts 4 corresponding to the iron core where the stator body 1 is located; and further comprising a winding part 4 arranged outside the first frame 2 The invention discloses a plurality of positioning columns of the wall, and each group of limiting columns is composed of three positioning members 8 distributed at the top, the middle and the bottom, and a limiting assembly arranged on each positioning member 8; the limiting assembly includes a wire through groove 14, which is horizontally opened at the bottom of the positioning member 8, and a limiting baffle 16 which can be opened and closed at the bottom opening of the wire through groove 14. The wire through groove 14 is provided for the enameled wire to pass through and to limit the enameled wire. The enameled wire is loaded into the bottom opening of the wire through groove 14 and is limited by the limiting baffle 16 to prevent the enameled wire from slipping out.

[0020] In the present application, the first frame 2 and the second frame 3 are respectively arranged at the top and the bottom of the stator body 1, and the first frame 2 is sequentially provided with a plurality of groups of first winding grooves 5, second winding grooves 6, and third winding grooves 7, and the slot depth of each group of first winding grooves 5, second winding grooves 6, and third winding grooves 7 is successively deepened. Figure 1 , 2, 3, to realize the multi-layer winding process of the motor coil. It is known that the enameled wires of the motor are usually 3, 6, or 9. For example, the number of wires of a 380V / 50Hz three-phase motor is usually 3 or 6, while the number of wires of a 660V / 50Hz three-phase motor is usually 6 or 9. Here, 3 wires are taken as an example and act on the first winding groove 5, the second winding groove 6, and the third winding groove 7 respectively, so as to realize the layered wire binding process of the enameled wire. The application realizes the layered binding of the enameled wire through a simple design of the groove depth of the first winding groove 5, the second winding groove 6, and the third winding groove 7, thereby reducing the occurrence of motor overheating, increased leakage inductance, reduced power, and inter-turn short circuit caused by winding or severe crossing of the enameled wire, thereby improving the working quality of the motor, and further through the role of the positioning column, combined with Figure 1 , 4 As shown, several groups of positioning posts are provided here, and the three positioning members 8 where each group of positioning posts is located are distributed in the upper, middle and lower positions, thereby realizing the layered guiding effect of the enameled wires respectively connected to the first winding groove 5, the second winding groove 6 and the third winding groove 7, and at the same time, in conjunction with the limiting components provided on each positioning member 8, further protecting and preventing the enameled wires passing therethrough from falling off, thereby reducing the influence of motor vibration on the stability of the binding of the enameled wires;

[0021] Here, the binding process of a single enameled wire on the first winding groove 5 is taken as an example. Figure 1 As shown, it is worth noting that a single enameled wire needs to complete a number of sequential wire binding processes of the winding portion 4 corresponding to the first winding groove 5, as shown in the following figure. Figure 1 , 3 As shown, after one end of a single enameled wire is limited on the second frame 3, the other end thereof passes through the stator body 1 and reaches the winding portion 4 corresponding to the first winding slot 5. After the winding process of the stator body 1 where the iron core is located and the winding portion 4 where the first frame 2 and the second frame 3 are located is completed, it can pass through the first winding slot 5 corresponding to the winding portion 4. At this time, through the action of the positioning column, it can reach and pass through the first winding slot 5 of the adjacent group, and further complete the winding process of the winding portion 4 corresponding to the first winding slot 5 of the adjacent group. Finally, the enameled wire ends are wound around the stator body 1 and the winding portion 4 corresponding to the first winding slot 5 of the adjacent group. The remaining two enameled wires are connected to the winding portion 4 corresponding to the second winding groove 6 and the third winding groove 7 in the same way to complete the wire binding process. In this process, the first winding groove 5, the second winding groove 6, and the third winding groove 7 with increasing depths are used to realize the layered wire binding process of multiple enameled wires. This design not only reduces a series of adverse effects caused by the winding or serious crossing of the enameled wires, but also cooperates with the structural design of the positioning column to further provide a layered guiding effect for the direction of the enameled wire, and at the same time, it plays a role in protecting and preventing the enameled wire from falling off.

[0022] Exemplarily, the limit baffle 16 is rotatably arranged near the bottom opening of the wire groove 14 through a pin shaft, and a spring 17 or a spring sheet is arranged to provide elastic force for the limit baffle 16, so that the spring 17 or the spring sheet keeps the limit baffle 16 always maintaining the tendency to close the opening. As a deformable implementation scheme, in order to simplify the structure, the limit baffle 16 can adopt an elastic plate structure integrally formed on the positioning member 8, so that the structure is simpler.

[0023] Furthermore, a first connection portion, a second connection portion and a third connection portion are formed between each group of two first winding grooves 5, two second winding grooves 6 and two third winding grooves 7, respectively. Figure 1 As shown, the first connecting portion, the second connecting portion and the third connecting portion formed here can play a role in fixing the enameled wire and further provide an installation structure for the binding wire of the enameled wire.

[0024] Furthermore, a tooth groove 15 is provided at the top of the wire groove 14. Figure 4 As shown, to further increase the stability of the binding wire.

[0025] Furthermore, a plurality of limit strips 9 are also provided at the lower portion of the outer wall of the first frame body 2; Figure 1 As shown, a plurality of limiting strips 9 can play a supporting role for the lowest enameled wire.

[0026] Furthermore, the lower part of the second frame 3 is also provided with a plurality of outlet terminal seats 12, and three limit slots 13 longitudinally opened on each outlet terminal seat 12, and each limit slot 13 is a vertical slot structure with an open lower end; Figure 2 , 3 As shown, the three limiting grooves 13 provided on each outlet terminal seat 12 serve as the convergence structure of the head and tail ends of the three enameled wires, so that the staff can quickly find the lead-out position of the enameled wires, thereby providing convenience for subsequent processing.

[0027] Furthermore, each limiting groove 13 is provided with an anti-slip pad; Figure 3 As shown, the anti-slip pad is preferably made of insulating material, and its function is to improve the stability of the limiting groove 13 on the end of the enameled wire.

[0028] Furthermore, the adjacent winding parts 4 where the first frame 2 and the second frame 3 are located are respectively provided with a plurality of card frames 11 on their opposite surfaces, and a plurality of card slots 10 are respectively provided on the top and bottom of the adjacent iron core where the stator body 1 is located, and the card slots 10 are adapted to be plugged in with the card frames 11, such as Figure 1 , 2 As shown, the design realizes the detachable installation of the stator body 1 , the first frame 2 , and the second frame 3 , and in order to further ensure the installation stability, a damping layer is provided at the interaction point of the card slot 10 and the card frame 11 .

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. There are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, or through the method of bolt connection, etc.

[0030] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. The insulation bracket inside the motor is characterized by: include: A stator body (1), a first frame (2), and a second frame (3), wherein the first frame (2) and the second frame (3) are respectively arranged at the top and the bottom of the stator body (1), and a plurality of groups of first winding grooves (5), second winding grooves (6), and third winding grooves (7) are sequentially arranged on the first frame (2) and have a groove depth that increases sequentially; The first frame (2) and the second frame (3) are also provided with winding parts (4) respectively on the inner side thereof, corresponding one to one with the iron core where the stator body (1) is located; It also includes a plurality of positioning columns arranged on the outer wall of the first frame (2), and each group of limiting columns is composed of three positioning members (8) distributed at the top, middle and bottom, and a limiting assembly arranged on each of the positioning members (8); The limiting assembly comprises a wire groove (14), the wire groove (14) being transversely opened at the bottom of the positioning member (8), and a limiting baffle (16) which can be opened and closed and is arranged at the bottom opening of the wire groove (14).

2. The motor internal insulation bracket according to claim 1, characterized in that: A first connecting portion, a second connecting portion and a third connecting portion are formed respectively between each group of two of the first winding grooves (5), two of the second winding grooves (6) and two of the third winding grooves (7).

3. The motor internal insulation bracket according to claim 1, characterized in that: The top of the wire-passing groove (14) is also provided with a tooth groove (15).

4. The motor internal insulation bracket according to claim 1, characterized in that: A plurality of limit strips (9) are also provided at the lower part of the outer wall of the first frame (2).

5. The motor internal insulation bracket according to claim 1, characterized in that: The lower part of the second frame (3) is also provided with a plurality of outlet terminal seats (12) and three limiting grooves (13) longitudinally opened on each of the outlet terminal seats (12), and each limiting groove (13) is a vertical groove structure with an open lower end.

6. The motor internal insulation bracket according to claim 5, characterized in that: An anti-slip pad is arranged inside each limiting groove (13).

7. The motor internal insulation bracket according to claim 1, characterized in that: The adjacent winding parts (4) where the first frame (2) and the second frame (3) are located are respectively provided with a plurality of card frames (11) on their opposite surfaces, and a plurality of card slots (10) are respectively opened on the top and bottom of the adjacent iron core where the stator body (1) is located, and the card slots (10) are adapted to be plugged in.

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