Stator coil fixing structure

Abstract

The utility model discloses a stator coil fixing structure, which relates to the technical field of stator processing, and comprises a fixing framework and a baffle plate, the outer surface of the baffle plate is provided with a second clamping groove, the outer ring of the fixing framework is provided with a first clamping groove, the top of the fixing framework is provided with a check ring, and the outer ring of the check ring is connected with a first elastic sheet. The inner ring of the check ring is connected with a second elastic piece. Through the arrangement of the check ring, the first elastic piece, the second elastic piece, the first clamping groove and the second clamping groove, the check ring is fed into the fixing framework after a wire is packaged, at the moment, the first elastic piece is clamped into the first clamping groove to limit the outer ring of the check ring, meanwhile, the second elastic piece is clamped into the second clamping groove to limit the inner ring of the check ring, and therefore the check ring is prevented from falling off; the coil is propped through the check ring so as to be prevented from moving; the coil is effectively prevented from moving, and the installation operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stator processing, in particular to a stator coil fixing structure. Background Art

[0002] The stator coil, also known as the stator winding or winding coil, is an important component of the electric motor. In the process of connecting the stator coil to the stator core, a stator frame is usually required. It is the fixed basis of the stator coil and plays the role of fixing the coil and insulating it.

[0003] A stator winding package fixing structure with application number 202021051673.7 includes a stator core and a winding package, wherein two winding protrusions are symmetrically provided inside the stator core, a winding package is wound on the winding protrusions, and the laying direction of the conductors in the winding package is the same as the axial direction of the stator core, a winding package terminal is provided at one end of the winding package, and an iron binding tape is tied to the outside of the winding package. The utility model uses an iron binding tape to bind and fix the winding package to prevent the winding package from moving in series; however, in some compact machines, since the iron binding tape is thicker, in order to leave enough safety dimensions, a polyester non-woven fabric binding tape can be used to bind and fix the stator winding package first, and then the stator winding package can be fixed by dripping paint. Such a stator can also prevent the winding package from moving in series during use, thereby improving the straightness of the product.

[0004] This technical solution uses iron sheet binding tape or polyester non-woven fabric to bind and fix the stator wire bundle. However, after the wire bundle is wrapped on the stator and the frame, there is a small gap between the multiple wire bundles and the frame. In addition, the wire bundle has a ring structure, resulting in a small operating space for tying the binding tape, making the installation operation very inconvenient. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a stator winding fixing structure to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a stator coil fixing structure, comprising a fixed frame and a baffle, wherein the outer surface of the baffle is provided with a second slot, the outer ring of the fixed frame is provided with a first slot, a retaining ring is placed on the top of the fixed frame, and the outer ring of the retaining ring is connected to a first spring piece, and the inner ring of the retaining ring is connected to a second spring piece.

[0007] By adopting the above technical solution, after the wire package is packed, the retaining ring is sent into the fixed frame. At this time, the first spring piece is clamped into the first slot to limit the outer ring of the retaining ring, and the second spring piece is clamped into the second slot to limit the inner ring of the retaining ring, thereby preventing the retaining ring from falling off, and the wire package is supported by the retaining ring to prevent the wire package from moving.

[0008] Furthermore, the retaining ring, the first spring piece and the second spring piece are all made of PA material.

[0009] By adopting the above technical solution, the retaining ring made of PA material has good insulation properties, which prevents the wire package current from being conducted through the retaining ring. The first spring clip and the second spring clip made of PA material have good elasticity, which facilitates the first spring clip and the second spring clip to deform into the first card slot and the second card slot to limit the retaining ring. All three are made of PA material, which facilitates one-piece molding.

[0010] Furthermore, the first elastic piece is detachably connected to the first slot, and the second elastic piece is detachably connected to the second slot.

[0011] By adopting the above technical solution, the first elastic piece is clamped into the first clamping groove to limit the outer ring of the retaining ring, and the second elastic piece is clamped into the second clamping groove to limit the inner ring of the retaining ring.

[0012] Furthermore, three of the first elastic pieces and three of the second elastic pieces are provided, and the three first elastic pieces and three second elastic pieces are distributed in a ring array.

[0013] By adopting the above technical solution and increasing the number of the first elastic pieces and the second elastic pieces, the contact surface between the retaining ring and the fixed frame and the baffle is increased, thereby increasing the stability of the retaining ring's position limitation.

[0014] Furthermore, six of the first card slots and six of the second card slots are provided, and the six first card slots and the six second card slots are distributed in a ring array.

[0015] By adopting the above technical solution, the number of the first clamping slots and the second clamping slots is twice the number of the first elastic pieces and the second elastic pieces, thereby increasing the flexibility of the retaining ring installation.

[0016] Furthermore, a slot is provided at the bottom of the fixed frame, a winding arm is connected to the inner wall of the fixed frame, and a baffle is connected to the top of the winding arm.

[0017] By adopting the above technical solution, the staff installs the fixed frame on the stator core, and then the staff puts the stator wire package on the winding arms of the fixed frame and the stator core, thereby completing the installation operation of the stator wire package, and the baffle blocks the wire package to prevent the wire package from falling off from the fixed frame and the inner ring of the stator core.

[0018] Furthermore, the winding arms and baffles are provided in plurality, and the plurality of winding arms and baffles are distributed in a ring array.

[0019] By adopting the above technical solution, by increasing the number of winding arms and baffles, it is convenient to install multiple stator coils, so that the current distribution is more uniform, the electromagnetic field is more stable, and the power and torque output of the motor are higher.

[0020] Furthermore, a buffer pad is connected to the bottom of the retaining ring, and the buffer pad is made of silicone material.

[0021] By adopting the above technical solution, the coil package is supported by the retaining ring to prevent the coil package from moving. At the same time, the stator coil package is buffered by the provision of the buffer pad to prevent the retaining ring from crushing the stator coil package.

[0022] In summary, the present invention has the following beneficial effects:

[0023] The utility model adopts the arrangement of the retaining ring, the first spring piece, the second spring piece, the first clamping slot and the second clamping slot. After the wire package is packed, the retaining ring is sent into the fixed frame. At this time, the first spring piece is clamped into the first clamping slot to limit the outer ring of the retaining ring, and the second spring piece is clamped into the second clamping slot to limit the inner ring of the retaining ring, thereby preventing the retaining ring from falling off, and the wire package is supported by the retaining ring to prevent the wire package from moving; it effectively prevents the wire package from moving, and the installation operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the bottom-up structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the fixed skeleton structure of the present utility model;

[0027] Figure 4 This is a schematic diagram of the retaining ring structure when viewed from above.

[0028] In the figure: 1. Fixed frame; 2. Winding arm; 3. Slot; 4. Baffle; 5. Retaining ring; 6. First spring piece; 7. Second spring piece; 8. First slot; 9. Second slot; 10. Buffer pad. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] Example 1:

[0032] A stator winding fixing structure, such as Figure 1-Figure 4As shown, it includes a fixed frame 1 and a baffle 4, a baffle 5 is placed on the top of the fixed frame 1, and the wire package is supported by the baffle 5 to prevent the wire package from moving; the outer ring of the baffle 5 is connected to a first spring piece 6, and the outer ring of the fixed frame 1 is provided with a first slot 8, the first spring piece 6 is detachably connected to the first slot 8, and the first spring piece 6 is snapped into the first slot 8 to limit the outer ring of the baffle 5; the inner ring of the baffle 5 is connected to a second spring piece 7, and the outer surface of the baffle 4 is provided with a second slot 9, the second spring piece 7 is detachably connected to the second slot 9, and the second spring piece 7 is snapped into the second slot The inner ring of the retaining ring 5 is limited in the second slots 9; three first spring clips 6 and three second spring clips 7 are provided, and the three first spring clips 6 and the second spring clips 7 are distributed in a ring array; six first slots 8 and six second slots 8 and 9 are provided, and the six first slots 8 and the second slots 9 are distributed in a ring array. Increasing the number of spring clips and slots increases the contact surface to improve the stability of the connection; the retaining ring 5, the first spring clip 6 and the second spring clip 7 are all made of PA material, which is insulating and elastic, making it easy for the spring clips to enter the slots.

[0033] See Figure 1-Figure 3 In the above embodiment, a slot 3 is provided at the bottom of the fixed frame 1. The staff installs the fixed frame 1 on the stator core. The inner wall of the fixed frame 1 is connected to the winding arm 2. The staff then puts the stator wire package on the fixed frame 1 and the winding arm 2 of the stator core, thereby completing the installation operation of the stator wire package; a baffle 4 is connected to the top of the winding arm 2, which blocks the wire package to prevent it from falling off from the fixed frame 1 and the inner ring of the stator core; multiple winding arms 2 and baffles 4 are provided, and the multiple winding arms 2 and baffles 4 are distributed in a ring array to facilitate the installation of multiple wire packages.

[0034] Example 2:

[0035] On the basis of the above-mentioned embodiment 1, in order to prevent the retaining ring 5 from crushing the wire package, the following settings are adopted.

[0036] See Figure 4 In the above embodiment, a buffer pad 10 is connected to the bottom of the retaining ring 5. The buffer pad 10 is made of silicone material. The stator coil is buffered by the buffer pad 10 to prevent the retaining ring 5 from crushing the stator coil.

[0037] The implementation principle of the present utility model is as follows: first, the staff installs the fixed frame 1 on the stator core, and then the staff puts the stator wire package on the fixed frame 1 and the winding arm 2 of the stator core, thereby completing the installation operation of the stator wire package. After the stator wire package is packed, the staff sends the retaining ring 5 into the fixed frame 1. At this time, the first elastic piece 6 is clamped into the first clamping groove 8 to limit the outer ring of the retaining ring 5, and the second elastic piece 7 is clamped into the second clamping groove 9 to limit the inner ring of the retaining ring 5, thereby preventing the retaining ring 5 from falling off. The wire package is supported by the retaining ring 5 to prevent the wire package from moving. At the same time, the stator wire package is buffered by the setting of the buffer pad 10 to prevent the retaining ring 5 from pressing the stator wire package, and the baffle 4 blocks the wire package to prevent the wire package from falling off from the fixed frame 1 and the inner ring of the stator core.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A stator coil fixing structure, comprising a fixing frame (1) and a baffle (4), characterized in that: The outer surface of the baffle (4) is provided with a second slot (9), the outer ring of the fixed frame (1) is provided with a first slot (8), a retaining ring (5) is placed on the top of the fixed frame (1), and the outer ring of the retaining ring (5) is connected to a first spring piece (6), and the inner ring of the retaining ring (5) is connected to a second spring piece (7).

2. The stator winding fixing structure according to claim 1, characterized in that: The retaining ring (5), the first spring piece (6) and the second spring piece (7) are all made of PA material.

3. The stator coil fixing structure according to claim 2, characterized in that: The first elastic piece (6) is detachably connected to the first clamping slot (8), and the second elastic piece (7) is detachably connected to the second clamping slot (9).

4. The stator coil fixing structure according to claim 3, characterized in that: Three of the first elastic pieces (6) and three of the second elastic pieces (7) are provided, and the three first elastic pieces (6) and the three second elastic pieces (7) are distributed in a ring array.

5. The stator coil fixing structure according to claim 3, characterized in that: Six of the first card slots (8) and the second card slots (9) are provided, and the six first card slots (8) and the six second card slots (9) are distributed in a ring array.

6. The stator coil fixing structure according to claim 1, characterized in that: A slot (3) is provided at the bottom of the fixed frame (1), a winding arm (2) is connected to the inner wall of the fixed frame (1), and a baffle (4) is connected to the top of the winding arm (2).

7. The stator coil fixing structure according to claim 6, characterized in that: A plurality of the winding arms (2) and baffles (4) are provided, and the plurality of winding arms (2) and baffles (4) are distributed in a ring array.

8. The stator coil fixing structure according to claim 1, characterized in that: The bottom of the retaining ring (5) is connected to a buffer pad (10), and the buffer pad (10) is made of silicone material.

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