Motor outlet nozzle assembly and motor

Abstract

The application discloses a wire outlet nozzle assembly for a motor and the motor, the wire outlet nozzle assembly is installed on the end cover of the motor, the wire outlet nozzle assembly comprises a wire outlet nozzle and a wire clamp, the wire outlet nozzle is in sealing connection with the end cover through the wire clamp, at least two first buckles are arranged on the wire outlet nozzle, buckle through holes corresponding to the first buckles in number and position are arranged on the wire clamp, end cover buckle grooves corresponding to the first buckles in number and position are arranged on the end cover, and the first buckles are clamped on the end cover buckle grooves of the end cover after penetrating through the buckle through holes. The application can effectively fix the wire outlet nozzle and the end cover, avoids the wire outlet nozzle from falling off when the power cord is pulled, and enhances the waterproof performance of the motor.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and in particular to a motor cable outlet assembly and a motor. Background Technology

[0002] A cable outlet nozzle is a rubber component used in iron-cased motors. It features a cable outlet structure, a positioning and fixing structure, and sometimes a cable guide structure. Its main function is to prevent water droplets from entering the motor, protect the cable from scratches by the circumferential wall of the cable outlet hole on the end cover, and prevent exposed cable, thus providing good waterproof performance. Currently, the cable outlet nozzle on iron-cased motors is fixed to the end cover via a groove on the nozzle. This method of fixing is relatively weak, and the nozzle easily detaches when the power cable is pulled, resulting in poor waterproof performance of the motor. Summary of the Invention

[0003] This invention provides a wire outlet assembly for a motor and a motor. The wire outlet assembly includes a wire outlet and a wire clamp. By passing a first buckle on the wire outlet through a buckle through hole on the wire clamp and engaging it with the end cover buckle groove of the motor end cover, the wire outlet and the end cover are effectively fixed, solving the problem that existing wire outlets are prone to loosening.

[0004] According to one aspect of this application, an embodiment of the present invention provides a motor cable outlet assembly. The cable outlet assembly is mounted on the end cover of the motor. The cable outlet assembly includes a cable outlet and a cable clamp. The cable outlet is sealed to the end cover via the cable clamp. The cable outlet is provided with at least two first buckles. The cable clamp is provided with buckle through holes corresponding to the first buckles. The end cover is provided with an end cover buckle groove corresponding to the first buckles. The first buckles pass through the buckle through holes and are engaged with the end cover buckle groove of the end cover.

[0005] In some embodiments, the outlet nozzle includes a clamp cylinder and a conductor cylinder. The clamp includes an end cap mating part and an outlet nozzle mating part. The clamp cylinder is sleeved on the outlet nozzle mating part and is interference-fitted with the outlet nozzle mating part.

[0006] In some embodiments, the clamp is provided with spaced-out wire holes for threading power cords, and the wire holes are interference-fitted with the power cords.

[0007] In some embodiments, the wire clamp includes a first wire clamp and a second wire clamp. The first wire clamp has a first wire groove, and the second wire clamp has a second wire groove that matches the first wire groove. After the first wire clamp and the second wire clamp are fastened together, the first wire groove and the second wire groove are joined together to form a wire hole.

[0008] In some embodiments, a sleeve is fitted onto the conductor tube of the outlet nozzle and a limiting groove is provided.

[0009] In some embodiments, the cable outlet includes a first cable outlet and a second cable outlet. The first cable outlet is provided with a second buckle, and the second cable outlet is provided with an insert groove adapted to the second buckle. The first cable outlet and the second cable outlet are engaged with the insert groove by the second buckle.

[0010] In some embodiments, the limiting groove is formed by a second snap-fit ​​engaging with the insert groove.

[0011] In some embodiments, the first outlet is provided with a splicing boss, and the second outlet is provided with a splicing groove that matches the splicing boss. The first outlet and the second outlet are connected by the splicing boss and the splicing groove.

[0012] According to another aspect of this application, an embodiment of the present invention provides a motor, the motor including the above-described motor lead-out nozzle assembly.

[0013] In some embodiments, the end cap and the wire clamp are tightly fitted together. The end cap is provided with a water-retaining protrusion, and the wire clamp is provided with a wire clamp groove that matches the water-retaining protrusion. The wire clamp is sleeved on the water-retaining protrusion through the wire clamp groove.

[0014] In some embodiments, the water-blocking boss is provided with a wire outlet hole, and the wire clamp is provided with a wire protective cover that can be embedded in the wire outlet hole.

[0015] This application designs a high-hardness wire outlet and a soft wire clamp. A first buckle is set on the wire outlet, and the first buckle on the wire outlet passes through the buckle through hole on the wire clamp and engages with the end cover buckle groove of the motor end cover. This achieves effective fixation between the wire outlet and the end cover, solving the problem of existing wire outlets being easy to loosen. The soft wire clamp can fit better with the end cover and the wire outlet, effectively preventing water droplets from entering and improving the waterproof performance of the motor.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the cable outlet assembly and the power cord after assembly according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the wire clamp in the wire outlet assembly provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first wire clamp in the wire outlet assembly provided in an embodiment of the present invention;

[0020] Figure 4This is a schematic diagram of the structure of the first outlet nozzle in the outlet nozzle assembly provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the second outlet nozzle in the outlet nozzle assembly provided in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the outlet nozzle in the outlet nozzle assembly provided in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the end cover in the motor provided in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the cooperation between the end cover and the outlet assembly in the motor provided in an embodiment of the present invention;

[0025] Figure 9 This is an assembly diagram of the motor provided in an embodiment of the present invention.

[0026] in:

[0027] 1. First wire clamp; 2. Buckle through hole; 3. Wire clamp groove; 4. Wire hole; 5. Second wire clamp; 6. Wire clamp splicing groove; 7. Wire clamp curved surface; 8. Connecting lug; 9. Connecting lug; 10. First buckle; 11. First plane of the cable outlet; 12. Wire clamp cylinder; 13. Wire clamp cylinder splicing boss; 14. Power cord cylinder splicing boss; 15. Second buckle; 16. Wire cord cylinder; 17. Second plane of the cable outlet; 18. Wire clamp cylinder splicing groove; 19. Power cord cylinder splicing groove; 20. Embedded groove; 21. Splicing plane; 22. Buckle groove; 23. 24. First cable outlet; 25. Limiting groove; 26. Second cable outlet; 27. Cable outlet splicing groove; 28. Power cord; 29. ​​Cable clamp; 30. Cable outlet; 31. End cap; 32. End cap arc surface; 33. End cap snap groove; 34. Cable outlet hole; 35. Water-blocking boss; 36. Cable outlet assembly; 37. Opening retaining ring; 38. Rotor assembly; 39. Waterproof cover; 40. Non-cable outlet end cap; 41. Rivet; 42. Cable outlet end cap; 43. Sleeve; 44. Cable tie; 45. Wire protection cover; 46. Hole wall; 47. End cap mating part; 48. Cable outlet mating part. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0029] In the description of this invention, it should be clearly stated that the terms "vertical", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal", etc., which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] This embodiment provides a motor cable outlet assembly, such as... Figures 1 to 9 As shown, the cable outlet assembly is installed on the end cover 30 of the motor. The cable outlet assembly includes a cable outlet 29 and a cable clamp 28. The cable outlet 29 is sealed to the end cover 30 through the cable clamp 28. The cable outlet 29 is provided with at least two first buckles 10. The cable clamp 28 is provided with buckle through holes 2 corresponding to the first buckles 10. The end cover 30 is provided with an end cover buckle groove 32 corresponding to the first buckles 10. The first buckles 10 pass through the buckle through holes 2 and are snapped into the end cover buckle groove 32 of the end cover 30.

[0032] In some embodiments, the outlet nozzle 29 includes a clamp cylinder 12 and a conductor cylinder 16, and the clamp 28 includes an end cap mating part 46 and an outlet nozzle mating part 47. The clamp cylinder 12 is sleeved on the outlet nozzle mating part 47 and is interference-fitted with the outlet nozzle mating part 47.

[0033] In some embodiments, the end cap 30 and the wire clamp 28 are tightly fitted together. The end cap 30 is provided with a water-blocking protrusion 34, and the wire clamp 28 is provided with a wire clamp groove 3 that matches the water-blocking protrusion 34. The wire clamp 28 is sleeved on the water-blocking protrusion 34 through the wire clamp groove 3.

[0034] In some embodiments, the water-blocking protrusion 34 is provided with a wire outlet hole 33, and the wire clamp 28 is provided with a wire protective cover 44, which is embedded in the wire outlet hole 33.

[0035] Specifically, the wire clamp 28 provided in this patent is made of soft material, such as silicone rubber. The wire clamp groove 3 on the wire clamp 28 is tightly fitted with the water-blocking protrusion 34 on the wire outlet end cap 41. The structure is compact and has the function of preventing water droplets from entering the motor, thus improving the waterproof performance of the motor. Preferably, the first buckles 10 are evenly distributed. In this technical solution, the first buckles 10 are symmetrically distributed. The first buckle 10 on the outlet 29 can pass completely through the buckle through hole 2, which provides space for the first buckle 10 to pass through the wire clamp 28. The first buckle 10 and the end cap buckle groove 32 have guide angles to guide the buckling direction. Both the first buckle 10 and the end cap buckle groove 32 have guide angles, which are generally 60° or 45°. During the process of the first buckle 10 passing through the end cap buckle groove 32, the elastic arm of the first buckle 10 deforms and presses in. The elastic arm deforms, and the deformation amount generally needs to be greater than the buckling amount. After buckling, the convex surface of the first buckle 10 fits against the concave surface of the end cap buckle groove 32, and it is not easy to remove it in the separation direction, thus realizing the connection and fixation of the first buckle 10 and the end cap buckle groove 32.

[0036] like Figure 1 As shown, the wire clamp 28 is in complete contact with the end cap 30. The contact surface of the wire clamp 28 is the wire clamp arc surface 7, and the contact surface of the end cap 30 is the end cap arc surface 31. The arc surface shape of the wire clamp 28 is completely consistent with the arc surface shape of the end cap 30. Since the wire clamp 28 is a rubber part, it is malleable. The reasonably designed compression ratio allows the wire clamp 28 to fully contact the end cap 30. The structure is compact and can prevent water droplets from entering the motor through the arc surface of the end cap 30, thus improving the motor's waterproof performance. The central axis of the wire protective cover is completely coincident with the central axis of the wire outlet hole 33. The wire waterproof cover can completely pass through the hole wall 45 of the wire outlet hole 33, which can prevent the power cord insulation from being scratched by the hole wall 45 of the end cap wire outlet hole 33, thus protecting the power cord.

[0037] In some embodiments, the wire clamp 28 is provided with spaced wire holes 4 for passing through the power cord 27, and the wire holes 4 are interference-fitted with the power cord 27. This prevents external water vapor from entering the motor through the power cord inlet, thus improving the motor's sealing performance.

[0038] Furthermore, the wire clamp 28 includes a first wire clamp 1 and a second wire clamp 5. The first wire clamp 1 has a first wire groove, and the second wire clamp has a second wire groove that matches the first wire groove. After the first wire clamp 1 and the second wire clamp 5 are fastened together, the first wire groove and the second wire groove are joined together to form the wire hole 4.

[0039] Specifically, the wire clamp 28 has a semi-integrated structure, with connecting lugs 8 and connecting tabs 9 distributed on it, serving to connect the first wire clamp 1 and the second wire clamp 5. The first wire clamp 1 and the second wire clamp 5 are symmetrical to each other, and their splicing forms the wire hole 4. The wire clamp splicing groove 6 and the wire hole 4 are equidistantly distributed, providing space for the power cable 27 to pass through the wire clamp 28; when the power cable 27 passes through the wire hole 4, the wire clamp 28 can be opened, making it easy and quick for the power cable 27 to pass through the wire hole.

[0040] In some embodiments, a sleeve 42 is fitted onto the wire tube 16 of the outlet nozzle 29, and a limiting groove 24 is provided. Specifically, the outer diameter of the wire tube 16 can be smaller than the inner diameter of the sleeve 42, and the limiting groove 24 is located at the fitting position between the wire tube 16 and the sleeve 42.

[0041] Furthermore, the outlet nozzle 29 includes a first outlet nozzle 23 and a second outlet nozzle 25. The first outlet nozzle 23 is provided with a second buckle 15, and the second outlet nozzle 25 is provided with an embedding groove 20 adapted to the second buckle 15. The first outlet nozzle 23 and the second outlet nozzle 25 are engaged with the embedding groove 20 by the second buckle 15.

[0042] More specifically, the limiting groove 24 is formed by the second buckle 15 engaging with the embedding groove 20.

[0043] In some embodiments, the first outlet 23 is provided with a splicing boss, and the second outlet 25 is provided with a splicing groove adapted to the splicing boss. The first outlet 23 and the second outlet 25 are connected by the splicing boss and the splicing groove.

[0044] The clamp cylinder 12 has a first surface 11 and a second surface 17 for the cable outlet. The two surfaces and the clamp cylinder 12 form a space to accommodate the cable outlet mating part 47, which perfectly accommodates the circular curved surface of the cable outlet mating part 47 that wraps around the clamp 28. The structure is compact. The conductor cylinder 16 is provided with a space to accommodate the power cord 27, which is used to place and guide the power cord 27 out. The clamp cylinder 12 and the conductor cylinder 16 also have splicing grooves such as the clamp cylinder splicing groove 18 and the power cord cylinder splicing groove 19, and splicing bosses such as the clamp cylinder splicing boss 13 and the power cord cylinder splicing boss 14. The splicing bosses and splicing grooves play a splicing role, realizing the complete splicing of the first cable outlet 23 and the second cable outlet 25, and have a waterproof function. Meanwhile, the second buckle 15 on the first outlet 23 fits perfectly into the groove 20 on the splicing plane 21 of the second outlet 25. The second buckle 15 deforms and then connects with the buckle groove 22 to form a limiting groove 24, which realizes the tight connection between the first outlet 23 and the second outlet 25 and has the function of tight connection. The outer diameter of the wire tube 16 is smaller than the diameter of the sleeve 42. The sleeve 42 can be a PVC sleeve, which is convenient to fit onto the outer circle of the wire tube 16. The limiting groove 24 is distributed on the wire tube 16 to facilitate better binding and prevent it from falling off. The limiting groove 24 can be used as a cable tie groove. The width of the cable tie groove is the same as the width of the cable tie 43. The cable tie 43 can effectively fix the outlet 29 and the PVC sleeve together, which is simple and convenient for employees to operate.

[0045] In some embodiments, the way the outlet assembly 35 and the power cord 27 are coupled in this technical solution is as follows: Figure 1 As shown, the cable outlet assembly 35 includes the first cable outlet 23, the second cable outlet 25, and the cable clamp 28 described above. First, the first latches 10 on the first cable outlet 23 and the second cable outlet 25 completely pass through the latching through-holes 2 on the cable clamp 28, achieving a connection between the cable clamp 28 and the cable outlet 29. Then, the power cable 27 is placed in the wire hole 4 of the cable clamp 28. Next, the splicing boss on the cable outlet 29 fully contacts the splicing groove, achieving a complete splicing of the first cable outlet 23 and the second cable outlet 25. Finally, the second latch 15 on the cable outlet 29 is connected and fixed to the latching groove 22, achieving a secure connection between the first cable outlet 23 and the second cable outlet 25. Using this method effectively prevents external water vapor from entering the motor through the power cable inlet, improving the motor's sealing performance.

[0046] like Figure 7 and Figure 8As shown, this patent provides a novel end cap, which is integrally formed using a stamping and stretching process. The material is sheet metal such as hot-dip galvanized sheet. It includes an end cap 30, an arc-shaped surface 31, a snap-fit ​​groove 32, a cable outlet hole 33, a water-blocking boss 34, and a hole wall 45. The structure of the end cap 30 is basically the same as that of a traditional end cap, the difference being that the end cap of this application has an end cap snap-fit ​​groove 32 and a water-blocking boss 34. The end cap snap-fit ​​groove 32 is distributed on the arc-shaped surface 31, corresponding to the first snap 10 on the cable outlet assembly 35, providing a connection function. The water-blocking boss 34 is distributed on the arc-shaped surface 31, and can be embedded into the cable clamp groove 3, resulting in a compact structure.

[0047] like Figure 9 As shown, this patent provides a metal-cased motor, including a stator assembly, a rotor assembly 37, a non-outlet end cover 39, an outlet end cover 41, rivets 40, a waterproof cover 38, and an outlet nozzle assembly 35. The production method is basically the same as the traditional method, the difference being that the production step of fixing the outlet nozzle 29 to the outlet end cover is moved. The assembly process of the iron-cased motor in this application can be as follows: inspect the stator appearance → apply oil to the end cover bearing chamber and place the wave pad → press the stator non-outlet end cover 39 → attach the rotor retaining spring → press the bearing → assemble the rotor assembly 37 → the power cable 27 exits from the outlet end cover 41 → assemble the outlet nozzle 29 and power cable 27 → assemble the outlet nozzle assembly 35 and outlet end cover 41 → close the front and rear end covers → rivet the front and rear end covers with rivets 40 → attach the waterproof ring and waterproof cover 38 → insert the PVC sleeve 42 → attach the cable tie 43 → attach the terminal → insert the terminal sleeve → attach the outer opening retaining ring 36 → test the performance → test the noise → affix the nameplate and inspect the appearance → package. The above-mentioned method of using the outlet nozzle assembly 35 with the end cover 30 and power cable 27 solves the problem of easy loosening of the existing outlet nozzle, and also effectively prevents external water vapor from entering the motor, improving the motor's sealing and waterproof performance, thereby improving the motor's safety performance.

[0048] This application also provides an electric motor, which includes any of the above-described motor cable outlet assembly.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention. It will be readily understood by those skilled in the art that, without conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

Claims

1. A motor cable outlet assembly, characterized in that, The cable outlet assembly is installed on the end cover (30) of the motor. The cable outlet assembly includes a cable outlet (29) and a cable clamp (28). The cable outlet (29) is sealed to the end cover (30) through the cable clamp (28). The cable outlet (29) is provided with at least two first buckles (10). The cable clamp (28) is provided with buckle through holes (2) corresponding to the first buckles (10). The end cover (30) is provided with an end cover buckle groove (32) corresponding to the first buckles (10). The first buckles (10) pass through the buckle through holes (2) and are snapped onto the end cover buckle groove (32) of the end cover (30). The outlet nozzle (29) includes a clamp cylinder (12) and a conductor cylinder (16). The clamp (28) includes an end cap fitting part (46) and an outlet nozzle fitting part (47). The clamp cylinder (12) is sleeved on the outlet nozzle fitting part (47) and is interference-fitted with the outlet nozzle fitting part (47).

2. The motor cable outlet assembly according to claim 1, characterized in that, The clamp (28) is provided with wire holes (4) for passing through power cords (27), and the wire holes (4) are interference-fitted with the power cords (27).

3. The motor cable outlet assembly according to claim 2, characterized in that, The wire clamp (28) includes a first wire clamp (1) and a second wire clamp (5). The first wire clamp (1) has a first wire groove, and the second wire clamp has a second wire groove that matches the first wire groove. After the first wire clamp (1) and the second wire clamp (5) are fastened together, the first wire groove and the second wire groove are spliced ​​together to form the wire hole (4).

4. The motor cable outlet assembly according to any one of claims 1-3, characterized in that, The lead tube (16) of the outlet (29) is fitted with a sleeve (42) and a limiting groove (24).

5. The motor cable outlet assembly according to claim 4, characterized in that, The outlet nozzle (29) includes a first outlet nozzle (23) and a second outlet nozzle (25). The first outlet nozzle (23) is provided with a second buckle (15), and the second outlet nozzle (25) is provided with an embedding groove (20) adapted to the second buckle (15). The first outlet nozzle (23) and the second outlet nozzle (25) are engaged with the embedding groove (20) by the second buckle (15).

6. The motor cable outlet assembly according to claim 5, characterized in that, The limiting groove (24) is formed by the second buckle (15) engaging with the embedding groove (20).

7. The motor cable outlet assembly according to claim 6, characterized in that, The first outlet (23) is provided with a splicing boss, and the second outlet (25) is provided with a splicing groove that matches the splicing boss. The first outlet (23) and the second outlet (25) are connected by the splicing boss and the splicing groove.

8. An electric motor, characterized in that, The motor includes a motor outlet assembly according to any one of claims 1-7.

9. The motor according to claim 8, characterized in that, The end cap (30) is attached to the connecting surface of the wire clamp (28). The end cap (30) is provided with a water-blocking boss (34). The wire clamp (28) is provided with a wire clamp groove (3) that matches the water-blocking boss (34). The wire clamp (28) is sleeved on the water-blocking boss (34) through the wire clamp groove (3).

10. The motor according to claim 9, characterized in that, The water-blocking boss (34) is provided with a wire outlet hole (33), and the wire clamp (28) is provided with a wire protection cover (44), which is embedded in the wire outlet hole (33).

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