Fixing device for lead wire assembly, insulating skeleton and motor having the same

Abstract

The present application provides a fixing device for a lead-out wire assembly, comprising: a lead fixing member, on which a plurality of fixing grooves are formed, and each fixing groove includes a fixing area and a lead-in area for the wire head that communicate with each other; the lead-in area is used for burying the wire head of the lead in the lead-out wire assembly; and the fixing area is used for fixing the lead-out wire assembly. According to the fixing device for the lead-out wire assembly of the present application, it is simple to use, has high reliability, is easy to shape the wire coil, and does not scratch the enameled wire.

Description

Technical Field

[0001] This application belongs to the technical field of motors, and particularly relates to a fixing device for a lead-out wire assembly, an insulating skeleton, and a motor having the same. Background Art

[0002] Currently, the fixing method for the lead-out wire assembly of a fixed-frequency motor is as follows: after connecting the lead wire to the enameled wire, the connection between the lead wire and the enameled wire is sealed with an insulating sleeve and then stuffed into the wire coil, and then the lead-out wire assembly and the wire coil are tied tightly together with a binding rope and fixed inside the wire coil.

[0003] The existing fixing and connecting method for the lead-out wire assembly of a variable-frequency motor is as follows: after winding the stator of the motor, the enameled wire is fixed in the terminal fixing groove of the insulating skeleton after being connected by piercing with a female terminal, and then the male terminal on the lead-out wire assembly is connected in cooperation with the female terminal.

[0004] However, in the existing fixing method for the fixed-frequency motor, it is necessary to add an insulating sleeve for insulation at the connection between the lead wire and the enameled wire. At the same time, when the sleeve is stuffed into the wire coil, the sleeve may scratch the enameled wire, and the wire coil wiring and shaping process is not convenient to operate.

[0005] In the existing fixing and connecting method for the lead-out wire assembly of the variable-frequency motor, 3 male terminals need to be added at one end of the lead-out wire assembly and fixed by injection molding; and 3 female terminals are needed to fix and connect the connection with the enameled wire, resulting in more material usage, relatively high material costs, and relatively more and complicated process steps; moreover, the contact area at the connection between the female terminal and the enameled wire is small, and there is a risk of unreliable connection.

[0006] Therefore, how to provide a fixing device for a lead-out wire assembly, an insulating skeleton, and a motor having the same, which has simple processes, high reliability, easy shaping of the wire coil, and does not scratch the enameled wire, has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] Therefore, the technical problem to be solved by this application is to provide a fixing device for a lead-out wire assembly, an insulating skeleton, and a motor having the same, which has simple processes, high reliability, and does not scratch the enameled wire.

[0008] A fixing device for a lead-out wire assembly includes: a lead wire fixing member, on which a plurality of mutually isolated fixing grooves are provided, and the fixing grooves include a fixing area and a wire head introducing area that communicate with each other; the wire head introducing area is used to bury the wire head of the lead wire in the lead-out wire assembly; the fixing area is used to fix the lead wire assembly.

[0009] Preferably, the fixing area is located on the wire head leading-out side of the lead-out wire assembly, and at least one second limiting platform is provided on the side wall of the fixing area.

[0010] Preferably, a plurality of second limiting platforms are arranged in a stepped manner in terms of the depth of the fixing groove, the platform heights of the plurality of second limiting platforms in the direction towards the slot opening decrease in sequence, and the plurality of second limiting platforms divide the fixing area into a plurality of limiting areas; a limiting opening is formed at the position where each second limiting platform is located.

[0011] Preferably, the width of the limiting opening is H2 = outer diameter of the lead wire - (0.3 - 0.8) mm.

[0012] Preferably, after the lead wires are fixed in the fixing groove, the creepage distance between adjacent two lead wires > 3 mm.

[0013] Preferably, it further includes a positioning member, and the positioning member includes a first positioning portion and a second positioning portion; the first positioning portion, the lead wire fixing member, and the second positioning portion are sequentially connected along the circumferential direction of the stator skeleton; both the first positioning portion and the second positioning portion are used for being tightly fixed to the wire coil.

[0014] Preferably, at least one limiting structure is arranged on the radial surfaces of the first positioning portion and the second positioning portion in the direction away from the wire coil, and the limiting structure is used to prevent the binding rope from slipping out during the binding process.

[0015] Preferably, the limiting structure is a limiting groove; the limiting groove arranged on the first positioning portion axially penetrates through the first positioning portion; the limiting groove arranged on the second positioning portion axially penetrates through the second positioning portion.

[0016] Preferably, the depth of the limiting groove > 0.3 mm, and the width > 0.6 mm.

[0017] Preferably, the limiting structure is a first limiting platform.

[0018] Preferably, the platform height D of the first limiting platform > 0.3 mm.

[0019] It further includes a pre-fixing guide rod; the first end of the pre-fixing guide rod is connected to the lead wire fixing member; the second end of the pre-fixing guide rod is used for being inserted between adjacent stator slots to pre-fix the lead wire fixing member.

[0020] Preferably, a fixing baffle is arranged on the second end of the pre-fixing guide rod, and the fixing baffle extends outward in the direction of the cross-section of the pre-fixing guide rod.

[0021] Preferably, the width H1 of the fixing baffle = width of the stator tooth.

[0022] According to another aspect of the present application, there is provided an insulating skeleton, including a fixing device for the lead wire assembly, and the fixing device for the lead wire assembly is the above-mentioned fixing device for the lead wire assembly.

[0023] According to another aspect of the present application, there is provided an electric motor, including the above-mentioned fixing device for the lead wire assembly or the insulating skeleton.

[0024] The fixing device for the lead wire assembly provided by this application uses a fixing groove structure with a mutually penetrating fixing area and a lead wire introduction area to fix the lead wire. It is simple to use, has high reliability, the wire package is easy to shape, and there will be no situation of scratching the enameled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front structural schematic diagram of the fixing device for the lead wire assembly of the embodiment of this application;

[0026] Figure 2 is a left view of the fixing device for the lead wire assembly of the embodiment of this application;

[0027] Figure 3 is a back structural schematic diagram of the fixing device for the lead wire assembly of the embodiment of this application;

[0028] Figure 4 is a top view of the fixing device for the lead wire assembly of the embodiment of this application;

[0029] Figure 5 is a top view of the fixing device for the lead wire assembly of the embodiment of this application;

[0030] Figure 6 is a front structural schematic diagram of the wire package of the embodiment of this application;

[0031] Figure 7 is a side structural schematic diagram of the wire package of the embodiment of this application;

[0032] Figure 8 is an installation structural schematic diagram of the fixing device for the lead wire assembly of the embodiment of this application;

[0033] Figure 9 is a schematic diagram of the insulating skeleton structure of the embodiment of this application;

[0034] Figure 10 is an installation structural schematic diagram of the insulating skeleton structure of the embodiment of this application;

[0035] Figure 11 is an exploded view of the installation structure of the insulating skeleton structure of the embodiment of this application.

[0036] The reference numerals are shown as:

[0037] 1. Lead fixing member; 11. Fixing groove; 111. Fixing area; 112. Lead wire introduction area; 2. Positioning member; 21. First positioning portion; 22. Second positioning portion; 3. Pre-fixing guide rod; 31. Fixing baffle; 41. Limiting groove; 42. First limiting platform; 5. Lead wire assembly; 51. Lead wire; 6. Wire package; 7. Binding rope; 8. Stator slot; 9. Insulating slot paper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Refer to the accompanying drawings Figure 1 As shown, according to an embodiment of the present application, a fixing device for a lead-out wire assembly includes: a lead fixing member 1, on which a plurality of mutually isolated fixing grooves 11 are provided. The fixing groove 11 includes a fixing area 111 and a lead-in area 112 that communicate with each other. The lead-in area 112 is used to bury the lead end of the lead-out wire assembly. The fixing area 111 is used to fix the lead assembly. The above technical solution is simple to use, has high reliability, and the wire coil 6 is easy to shape, and there will be no situation of scratching the enameled wire.

[0039] Refer to the accompanying drawings Figure 1-2 As shown, according to an embodiment of the present application, the fixing area 111 is located on the lead-out side of the lead-out wire assembly 5, and at least one second limiting platform 113 is provided on the side wall of the fixing area 111.

[0040] Further, the second limiting platforms 113 are arranged in pairs on the two side walls of the fixing area 111; the distances from the two second limiting platforms 113 arranged in pairs to the bottom of the groove are the same. The second limiting platforms 113 arranged on the side wall of the fixing area 111 can limit the lead 51 entering the limiting area and play a role in fixing the lead.

[0041] Further, a plurality of second limiting platforms 113 are arranged in a stepped manner in the depth of the fixing groove 11, and the platform heights of the plurality of second limiting platforms 113 in the direction of the groove opening decrease in sequence. The plurality of second limiting platforms 113 divide the fixing area 111 into a plurality of limiting areas. The second limiting platform 113 forms a limiting opening at its position, which is suitable for fixing lead-out wire assemblies with different outer diameters of the lead 51, and the applicable range is wider.

[0042] Further, the width of the limiting opening is H2 = outer diameter of the lead - 0.3 to 0.8 mm, to prevent the lead from slipping out of the limiting area.

[0043] Further, the width of the limiting opening is H2 = outer diameter of the lead - 0.5 mm, so that the lead 51 will not pop out after being stuck in the limiting area.

[0044] Further, the width H3 of the fixing groove 11 = outer diameter of the lead, so that the lead 51 is not easy to slide in the fixing groove 11.

[0045] Further, the cross-section of the second limiting platform 113 is a right triangle, the first right side coincides with the side wall, and the second right side is connected to one end of the first right side close to the bottom of the groove, so that both the bottom and the top of the limiting area at the middle position in the depth direction of the fixing groove 11 limit the lead 51, and the lead 51 is clamped tighter and not easy to slide out.

[0046] Further, the depth of the lead-in area 112 > 4 mm, at this depth, the lead 51 is not easy to slide out.

[0047] Furthermore, after the lead wire 51 is fixed in the fixing groove 11, the creepage distance between two adjacent lead wires is > 3 mm.

[0048] Furthermore, the fixing area 111 includes a first fixing area and a second fixing area, and the first fixing area, the lead wire introducing area 112, and the second fixing area are sequentially arranged on the fixing groove 11.

[0049] Referring to Figure 3 As shown, the present application also discloses some embodiments, which further include a positioning member 2. The positioning member 2 includes a first positioning portion 21 and a second positioning portion 22; the first positioning portion 21, the lead wire fixing member 1, and the second positioning portion 22 are sequentially connected along the circumferential direction of the stator skeleton; both the first positioning portion 21 and the second positioning portion 22 are used for being tightly fixed to the wire coil. The first positioning portion 21 and the second positioning portion 22 are respectively arranged on both sides of the lead wire fixing member 1. During the process of tying the wire coil 6, the first positioning portion 21 and the second positioning portion 22 arranged on both sides of the lead wire fixing member 1 are both tightly fixed together with the wire coil 6; thus, both sides of the lead wire fixing member 1 are tightly fixed to the wire coil 6, which can effectively tightly fix the lead wire fixing member 1 and the wire coil 6, and the fixing effect is better.

[0050] Furthermore, the connection surface of the lead wire fixing member 1 with the wire coil 6 is an arc surface, and this connection surface corresponds to the outer peripheral wall of the stator skeleton, so that the tight fixing effect is better.

[0051] Furthermore, at least one limiting structure is arranged on both the first positioning portion 21 and the second positioning portion 22, and the limiting structure is used to prevent the binding rope from slipping out during the tying process.

[0052] Furthermore, the limiting structure is arranged on the surfaces of the first positioning portion 21 and the second positioning portion 22 away from the wire coil. When fixing the wire coil 6 of the stator by tying, during the process of tying the wire coil 6, the lead wire assembly 5 fixing device and the wire coil 6 are tightly fixed together. During the tying process, the limiting structures of the first positioning portion 21 and the second positioning portion 22 limit the binding rope 7 to prevent the binding rope 7 from slipping out.

[0053] Referring to Figure 4 As shown, the present application also discloses some embodiments. The limiting structure is a limiting groove 41; the limiting groove 41 arranged on the first positioning portion 21 axially penetrates through the first positioning portion 21; the limiting groove 41 arranged on the second positioning portion 21 axially penetrates through the second positioning portion 21. During the tying process, the binding rope 7 is embedded in the limiting groove 41, which can effectively prevent the binding rope 7 from slipping out.

[0054] Furthermore, the depth of the limiting groove 41 > 0.3 mm, and the width > 0.6 mm.

[0055] Referring to Figure 5As shown, the present application also discloses some embodiments, and the limiting structure is the first limiting platform 42.

[0056] Further, the height D of the first limiting platform 42 is greater than 0.3 mm. During the binding process, the binding rope 7 is restricted by the first limiting platform 42, which can effectively prevent the binding rope 7 from slipping out.

[0057] Combined with reference to Figure 3-5 As shown, the present application also discloses some embodiments, which further include a pre-fixing guide rod 3; the first end of the pre-fixing guide rod 3 is connected to the lead fixing member 1; the second end of the pre-fixing guide rod 3 is used for being inserted between adjacent stator slots to pre-fix the lead fixing member 1. When installing the above fixing device, first use the pre-fixing guide rod 3 to pre-fix the lead fixing member 1, which has a preliminary positioning effect on the lead fixing member 1 and also makes the subsequent binding and fixing of the lead fixing member 1 more convenient.

[0058] Further, the first end of the pre-fixing guide rod 3 is connected to the surface of the lead fixing member 1 close to the direction of the wire coil 6.

[0059] Further, a fixing baffle 31 is provided at the second end of the pre-fixing guide rod 2; the fixing baffle 31 extends outward in the direction of the cross-section of the pre-fixing guide rod 2.

[0060] Further, the width H1 of the fixing baffle is equal to the stator tooth width. The width H1 is the width corresponding to the stator tooth of a part of the pre-fixing rod 2 inserted between two adjacent stator slots. If the cross-section of the fixing baffle is circular, the width H1 refers to the diameter. The specific method for pre-fixing with the pre-fixing rod 2 is as follows: After the stator wire coil is wound and shaped, the above-mentioned lead-out wire assembly fixing device is inserted into the wire coil 6, and the pre-fixing guide rod 2 is inserted between two adjacent stator slots. Since the width H1 of the fixing baffle 31 at the second end of the pre-fixing guide rod 2 is equal to the width of the stator tooth 8, during the insertion process of the fixing guide rod 2, the insulating slot paper 9 is squeezed. After the fixing baffle 31 passes through the insulating slot paper 9, the insulating slot paper 9 will rebound, thereby preliminarily fixing the lead-out wire assembly fixing device.

[0061] Combined with reference to Figure 6-8 As shown, the above-mentioned fixing device for the lead-out wire assembly is used for a fixed-frequency motor, and its specific installation method is as follows:

[0062] (1) Use the pre-fixing rod 2 for pre-fixing;

[0063] (2) Bind and fix the positioning member 2 to the wire coil 6;

[0064] (3) Connect the lead 51 to the winding enameled wire, which can be connected by soldering or terminals; after connection, insert the head of the lead 51 into the lead-in area 112 of the fixing device as required, and introduce the lead head into the fixing area 111 through the lead-in area 112 for fixing.

[0065] According to an embodiment of the present application, an insulating skeleton includes a fixing device for a lead wire assembly, and the fixing device for the lead wire assembly is the above-mentioned fixing device for the lead wire assembly.

[0066] Referring to Figure 9-11 As shown, the above-mentioned insulating skeleton is used for a variable-frequency motor, and its specific installation method is as follows:

[0067] (1) After the motor stator winding is completed, connect the lead wire 51 to the enameled wire. Here, soldering or terminals can be used for connection;

[0068] (2) After connection, insert the head of the lead wire 51 into the lead wire introduction area 112 of the fixing device as required, and introduce the lead wire head into the fixing area 111 through the lead wire introduction area 112 for fixing.

[0069] According to an embodiment of the present application, a motor includes the above-mentioned fixing device for a lead wire assembly or an insulating skeleton.

[0070] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0071] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, several improvements and modifications can be made without departing from the technical principle of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A fixing device for a lead-out wire assembly, Characterized in that, Comprising: A lead fixing member (1), on which a plurality of mutually isolated fixing grooves (11) are provided, and the fixing grooves (11) include a mutually penetrating fixing area (111) and a wire head introducing area (112); the wire head introducing area (112) is used for burying the wire head of the lead in the lead-out wire assembly; the fixing area (111) is used for fixing the lead assembly; the fixing area (111) is located on the wire head lead-out side of the lead-out wire assembly, and at least one second limiting platform (113) is provided on the side wall of the fixing area (111); a plurality of the second limiting platforms (113) are arranged in a stepped manner in the depth direction of the fixing groove (11), and the platform heights of the plurality of second limiting platforms (113) towards the notch direction gradually decrease, and the plurality of second limiting platforms (113) divide the fixing area (111) into a plurality of limiting areas; the second limiting platform (113) forms a limiting opening at its position; the cross section of each second limiting platform (113) is a right triangle, and the right triangle has a first right side and a second right side, the first right side coincides with the side wall of the fixing area (111), and the second right side is connected to one end of the first right side close to the bottom of the groove.

2. The fixing device for a lead-out wire assembly according to claim 1, Characterized in that, The width of the limiting opening is H2 = outer diameter of the lead - (0.3 - 0.8) mm.

3. The fixing device for a lead-out wire assembly according to claim 1, Characterized in that, The creepage distance between adjacent leads after the lead is fixed in the fixing groove (11) > 3 mm.

4. The fixing device for a lead-out wire assembly according to claim 1, Characterized in that, It further comprises a positioning member (2), and the positioning member (2) includes a first positioning portion (21) and a second positioning portion (22); the first positioning portion (21), the lead fixing member (1) and the second positioning portion (22) are sequentially connected along the circumferential direction of the stator skeleton; both the first positioning portion (21) and the second positioning portion (22) are used for being tightly fixed with the wire package.

5. The fixing device for a lead-out wire assembly according to claim 4, Characterized in that, At least one limiting structure is provided on the radial surface of the first positioning portion (21) and the second positioning portion (22) away from the wire package direction, and the limiting structure is used to prevent the binding rope from slipping out during the binding process.

6. The fixing device for a lead-out wire assembly according to claim 5, Characterized in that, The limiting structure is a limiting groove (41); the limiting groove (41) provided on the first positioning portion (21) axially penetrates the first positioning portion (21); the limiting groove (41) provided on the second positioning portion (21) axially penetrates the second positioning portion (21).

7. The fixing device for a lead-out wire assembly according to claim 6, Characterized in that, The depth of the limiting groove (41) > 0.3 mm, and the width > 0.6 mm.

8. The fixing device for a lead-out wire assembly according to claim 5, Characterized in that, The limiting structure is the first limiting platform (42).

9. The fixing device for the lead wire assembly according to claim 8, wherein, the height D of the first limiting platform (42) is greater than 0.3 mm.

10. The fixing device for the lead wire assembly according to claim 1, wherein, it further includes a pre-fixing guide rod (3); the first end of the pre-fixing guide rod (3) is connected to the lead fixing member (1); the second end of the pre-fixing guide rod (3) is used for inserting between adjacent stator slots to pre-fix the lead fixing member (1).

11. The fixing device for the lead wire assembly according to claim 10, wherein, a fixing baffle (31) is arranged on the second end of the pre-fixing guide rod (2), and the fixing baffle (31) extends outwards in the direction of the cross-section of the pre-fixing guide rod (2).

12. The fixing device for the lead wire assembly according to claim 11, wherein, the width H1 of the fixing baffle (31) is equal to the width of the stator tooth.

13. An insulating skeleton, comprising the fixing device for the lead wire assembly, wherein, the fixing device for the lead wire assembly is the fixing device for the lead wire assembly according to any one of claims 1 to 12.

14. An electric motor, wherein, it includes the fixing device for the lead wire assembly according to any one of claims 1 to 12 or the insulating skeleton according to claim 13.

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