Flat wire structure of outer rotor ec motor

Abstract

The application discloses a flat wire-out structure of an outer rotor ec motor, which comprises an end cover connected to the upper end of a motor stator; a first mounting groove is arranged on the end cover, and a cover is mounted in the first mounting groove in a matched mode; a second mounting groove is arranged on one side of the first mounting groove, and a sealing sleeve is mounted in the second mounting groove in a matched mode; the cover is pressed on the upper side of the sealing sleeve; and a power line connected with a motor electric control board is led out from the sealing sleeve in an inside-to-outside mode. The end cover adopts the flat wire-out design, and the structure is compact, so that water cannot enter from the led-out wire.

Description

Technical Field

[0001] This application belongs to the field of external rotor EC motor technology, and in particular relates to a flat-outlet structure for an external rotor EC motor. Background Technology

[0002] External rotor electronically commutated motors (EC motors) combine the high torque characteristics of an external rotor structure with the efficient control capabilities of electronic commutation technology, and are widely used in fields such as fans, pumps, power tools, and wheel hub drives for electric vehicles.

[0003] Normally, the power cable connecting the motor to the control board extends out of the motor housing from the inside out. Traditional cable outlet sleeves are not waterproof, and waterproof connectors take up a lot of space, making the motor's cable outlet structure bulky. Utility Model Content

[0004] In view of this, in order to solve one or more of the above problems, the main objective of this application is to provide a flat-outlet cable structure for an external rotor EC motor.

[0005] The technical solution adopted in this application is as follows: a flat-outlet structure for an external rotor EC motor, including an end cover connected to the upper end of the motor stator; a first mounting groove is provided on the end cover, and a sealing cover is installed in the first mounting groove; a second mounting groove is provided on one side of the first mounting groove, and a sealing sleeve is installed in the second mounting groove; the sealing cover presses on the sealing sleeve; the power line connected to the motor control board passes through the sealing sleeve from the inside to the outside.

[0006] Furthermore, the first mounting groove is provided with a through hole penetrating the end cap, and a flange is provided on the end face of the first mounting groove on the periphery of the through hole, and a sealing ring is provided on the end face of the flange; the cover is fastened to the sealing ring, and the lower edge of the cover is fitted into the groove formed by the flange and the first mounting groove.

[0007] Furthermore, a first locking block and a second locking block are provided on the inner side of the lower edge of the cover to engage with the inner wall of the through hole and extend downward along the bottom surface of the cover; the first locking block and the second locking block form a groove with the lower edge of the cover for accommodating the sealing ring.

[0008] Furthermore, the end of the cover near the inner side of the end cap is provided with a connecting lug with a screw hole, and correspondingly, the first mounting groove is provided with an extension groove that matches the shape of the connecting lug, and the extension groove is provided with an internal screw hole corresponding to the screw hole.

[0009] Furthermore, the second mounting groove has two recessed slots, and both ends of the sealing sleeve are simultaneously fitted into the two recessed slots; both ends of the sealing sleeve are provided with outlet holes for the power cord to pass through.

[0010] Furthermore, a partition is provided between the two recessed slots, the partition is provided with a fixing hole, and the cover is provided with a through hole corresponding to the fixing hole. After the cover is pressed onto the sealing sleeve, the end of the cover with the through hole is fixed to the partition by bolts.

[0011] Furthermore, the partition block is provided with a slot along the width direction of the partition block, the middle part of the sealing sleeve is inserted into the slot, and the middle part of the sealing sleeve and the partition block form a first stepped groove; the outer end of the second locking block of the cover is recessed inward to form a second stepped groove that matches the shape of the first stepped groove.

[0012] Compared with the prior art, the present application has the following advantages: the end cap adopts a flat cable exit design and the cable exit structure is compact, which can prevent water from entering from the cable exit. Attached Figure Description

[0013] The following figures are for illustrative purposes only and are not intended to limit the scope of this application, wherein:

[0014] Figure 1 This is a three-dimensional schematic diagram of the present application;

[0015] Figure 2 This is a schematic diagram of an explosion from the first perspective of this application;

[0016] Figure 3 This is a schematic diagram of the second perspective explosion in this application;

[0017] Figure 4 This is a three-dimensional schematic diagram of one perspective of the cover in this application;

[0018] Figure 5 This is a schematic diagram of the third perspective explosion in this application;

[0019] Figure 6 This is a three-dimensional schematic diagram of the cap from another perspective in this application.

[0020] Reference numerals: 10. Motor stator; 11. End cover; 12. Cover; 13. Sealing sleeve; 14. Power cord; 15. First mounting groove; 16. Flange; 17. Sealing ring; 18. Through hole; 19. Snap-in groove; 20. Lower edge; 21. Connecting ear; 22. Screw hole; 23. Extension groove; 24. Internal threaded hole; 25. Recessed slot; 26. Cable outlet hole; 27. Spacer; 28. Fixing hole; 29. ​​Through hole; 30. First locking block; 31. Second locking block; 32. Slot; 33. First stepped groove; 34. Second stepped groove. Detailed Implementation

[0021] To make the objectives, technical solutions, design methods, and advantages of this application clearer, the following detailed description, in conjunction with the accompanying drawings, provides specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0022] This application relates to a flat-outlet cable structure for an external rotor EC motor, which has the following implementation methods, please refer to the following for details. Figures 1-6 The system includes an end cover 11 connected to the upper end of the motor stator 10; the end cover 11 is provided with a first mounting groove 15, in which a cover 12 is fitted; a second mounting groove is provided on one side of the first mounting groove 15, in which a sealing sleeve 13 is fitted; the cover 12 presses against the sealing sleeve 13; and a power cable 14 connected to the motor control board passes through the sealing sleeve 13 from the inside out.

[0023] As one embodiment of this application, please refer to the following: Figures 1-6 As shown, the first mounting groove 15 is provided with a through hole 18 penetrating the end cap. A flange 16 is provided on the end face of the first mounting groove 15 around the through hole 18. A sealing ring 17 is provided on the end face of the flange 16. The cover 12 is fastened to the sealing ring 17. The lower edge 20 of the cover 12 is fitted into the groove formed by the flange 16 and the first mounting groove 15.

[0024] As one embodiment of this application, please refer to the following: Figures 1-6 As shown, a first locking block 30 and a second locking block 31 are provided on the inner side of the lower edge 20 of the cover 12 to engage with the inner wall of the through hole 18 and extend downward along the bottom surface of the cover 12; the first locking block 30 and the second locking block 31 form a groove 19 with the lower edge 20 of the cover 12 to accommodate the sealing ring 17.

[0025] As one embodiment of this application, please refer to the following: Figures 1-6 As shown, the end of the cover 12 near the inner side of the end cap 11 is provided with a connecting lug 21 with a screw hole 22. Correspondingly, the first mounting groove 15 is provided with an extension groove 23 that matches the shape of the connecting lug 21. The extension groove 23 is provided with an internal screw hole 24 that corresponds to the screw hole 22. The cover 12 and the end cap 11 are fixed at the connecting lug 21 with bolts.

[0026] As one embodiment of this application, please refer to the following: Figures 1-6As shown, the second mounting groove has two recessed slots 25, and both ends of the sealing sleeve 13 are simultaneously fitted into the two recessed slots 25; both ends of the sealing sleeve 13 are provided with outlet holes 26 for the power cord 14 to pass through.

[0027] In the above embodiment, the inner wall of the recessed slot 25 is provided with multiple recessed grooves. After the sealing sleeve 13 is placed in the recessed slot 25, it fits against the inner wall of the recessed slot 25 and is fastened and fixed by the cover 12. After the power cord 14 passes through the sealing sleeve 13, due to the presence of multiple recessed grooves, the liquid will be blocked in the recessed grooves and cannot enter the space where the motor's control board is located, so as to achieve the effect of water prevention.

[0028] As one embodiment of this application, please refer to the following: Figures 1-6 As shown, a partition 27 is provided between the two recessed slots 25. The partition 27 is provided with a fixing hole 28. The cover 12 is provided with a through hole 29 corresponding to the fixing hole 28. After the cover 12 is pressed onto the sealing sleeve 13, the end of the cover 12 with the through hole 29 is fixed to the partition 27 by bolts.

[0029] In the above embodiment, after the end of the cover 12 with the perforation 29 is fastened, it can wrap the sealing sleeve 13. Then, the cover and the partition are fixed by bolts through the fixing hole 28 and the perforation 29. The cover 12 compacts the sealing sleeve 13 and the sealing ring 17 to ensure the waterproof effect.

[0030] As one embodiment of this application, please refer to the following: Figures 1-6 As shown, the partition 27 is provided with a slot 32 along the width direction of the partition 27, the middle part of the sealing sleeve 13 is inserted into the slot 32, and the middle part of the sealing sleeve 13 and the partition 27 form a first stepped groove 33; the outer end of the second locking block 31 of the cover 12 is recessed inward to form a second stepped groove 34 that matches the shape of the first stepped groove 33.

[0031] In the above embodiment, the cover 12 is fastened to the outlet of the end cover 11. The first locking block 30 and the second locking block 31 at the lower end of the cover 12 form a locking part that matches the shape of the through hole 18. The locking part fits against the inner wall of the through hole 18, and the second stepped groove 34 on the cover 12 overlaps with the first stepped groove 33. The lower edge 20 of the cover 12 is fastened in the first mounting groove 15 and simultaneously fastened above the sealing sleeve 13, and the sealing ring 17 is pressed to achieve a waterproof effect.

[0032] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A flat-out structure of an outer rotor ec motor, characterized by, Includes an end cover (11) connected to the upper end of the motor stator (10); the end cover (11) is provided with a first mounting groove (15), in which a cover (12) is installed; a second mounting groove is provided on one side of the first mounting groove (15), in which a sealing sleeve (13) is installed; the cover (12) presses on the sealing sleeve (13); the power line (14) connected to the motor control board passes through the sealing sleeve (13) from the inside to the outside.

2. A flat-out structure of an outer rotor ec motor according to claim 1, characterized in that, The first mounting groove (15) is provided with a through hole (18) penetrating the end cap. A flange (16) is provided on the periphery of the through hole (18) on the end face of the first mounting groove (15). A sealing ring (17) is provided on the end face of the flange (16). The cover (12) is fastened to the sealing ring (17). The lower edge (20) of the cover (12) is fitted into the groove formed by the flange (16) and the first mounting groove (15).

3. A flat-out structure of an outer rotor ec motor according to claim 2, characterized in that, A first locking block (30) and a second locking block (31) are provided on the inner side of the lower edge (20) of the cover (12) to engage with the inner wall of the through hole (18) and extend downward along the bottom surface of the cover (12); the first locking block (30) and the second locking block (31) form a groove (19) with the lower edge (20) of the cover (12) for accommodating the sealing ring (17).

4. A flat-out structure of an outer rotor ec motor according to claim 3, characterized in that, The end of the cover (12) near the inner side of the end cap (11) is provided with a connecting lug (21) with a screw hole (22). Correspondingly, the first mounting groove (15) is provided with an extension groove (23) that matches the shape of the connecting lug (21). The extension groove (23) is provided with an inner screw hole (24) that corresponds to the screw hole (22).

5. A flat-out structure of an outer rotor ec motor according to claim 1, characterized in that, The second mounting groove has two recessed slots (25), and the two ends of the sealing sleeve (13) are simultaneously fitted into the two recessed slots (25); the two ends of the sealing sleeve (13) are provided with outlet holes (26) for the power cord (14) to pass through.

6. A flat-out structure of an outer rotor ec motor according to claim 5, characterized in that, A partition (27) is provided between two recessed slots (25). The partition (27) is provided with a fixing hole (28). The cover (12) is provided with a through hole (29) corresponding to the fixing hole (28). After the cover (12) is pressed onto the sealing sleeve (13), the end of the cover (12) with the through hole (29) is fixed to the partition (27) by bolts.

7. A flat-out structure of an outer rotor ec motor according to claim 6, characterized in that, The partition (27) is provided with a slot (32) along the width direction of the partition (27), the middle part of the sealing sleeve (13) is inserted into the slot (32), and the middle part of the sealing sleeve (13) and the partition (27) form a first stepped groove (33); the outer end of the second locking block (31) of the cover (12) is recessed inward to form a second stepped groove (34) that matches the shape of the first stepped groove (33).

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