TWI808230B - Combined structure of externally rotating brushless motor and centrifugal wind wheel - Google Patents

Abstract

The present invention provides a "combined structure of an outer-rotating brushless motor and a centrifugal wind wheel", which is composed of a left connecting plate and a right connecting plate. Through the left connecting plate and the right connecting plate, the mutual connection and fixing of the outward-rotating brushless motor and the centrifugal wind wheel can be quickly completed. Therefore, in the process of mass production of the centrifugal turbo fan products, the cost of the process of connecting and fixing the outer-rotating brushless motor and the centrifugal wheel can be greatly saved, and the interconnected and fixed outer-rotating brushless motor and the centrifugal wind wheel can be placed into the When the volute of the centrifugal turbo fan is inhaled and exhausted, the arc portion of the left coupling plate and the arc portion of the right coupling plate have the effect of diverting air. In addition to increasing the wind pressure output of the centrifugal turbo fan, it will also reduce the overall noise level during operation.

Description

Combined structure of externally rotating brushless motor and centrifugal wind wheel

The present invention relates to a "combined structure of an externally rotating brushless motor and a centrifugal wind wheel", which belongs to the field of centrifugal turbofans. It consists of a left connecting plate and a right connecting plate. The connecting and fixing of the externally rotating brushless motor and the centrifugal wheel can be quickly completed by the left connecting plate and the right connecting plate. Therefore, in the process of mass production of the centrifugal turbo fan products, the cost of the process of connecting and fixing the externally rotating brushless motor and the centrifugal wheel can be greatly saved. When the rotary brushless motor and the centrifugal fan wheel are placed in the volute of the centrifugal turbo fan for suction and exhaust, the arcs of the left coupling plate and the right coupling plate have the effect of diverting air. In addition to increasing the wind pressure output of the centrifugal turbo fan, it will also reduce the overall noise level during operation.

Please refer to Fig. 1 to Fig. 3, which is the structure of a conventional externally rotating brushless motor, which includes: a fixed shaft 10, a round rod made of metal material, an axially cut plane 11 is provided on the two end shafts, and a line groove pipe 12 is recessed inwardly on the surface of one of the end parts of the shaft, and a communication hole 13 is provided on the surface of the shaft near the bottom of the wire groove pipe 12 (as shown in Figure 3); The circular tube body between the hole 13 and the shaft end surface has an outer flange 21 protruding from the bottom (as shown in Figure 1); a stator coil 30 is a cylinder formed by stacking several silicon steel sheets 31 and surrounding them with enameled wires 32, and an axial hole 33 is formed in the center of the stacked silicon steel sheets 31, and an electric wire W is connected with the enameled wire after winding (as shown in Figure 3); an annular magnet 40 is a very anisotropic permanent magnet annular body sintered by iron oxide material. The matching tolerance mode and the outer ring surface of the ring magnet 40 are mutually combined and fixed (as shown in Figure 3); and the two side covers 60 are disk bodies respectively covered on the two port surfaces of the hollow casing 50, and a through hole 63 is pierced in the center of the outer surface 61 and the inner surface 62, and a bearing 64 is respectively sleeved on the through hole 63 of the inner surface 62. The inner hole diameter of the bearing 64 is the same as the shaft outer diameter of the fixed shaft 10. ring 65, and the outer diameter of the round convex ring 65 is the same as the diameter of the inner ring surface of the hollow housing 50, and they are pressed into and fixed with each other in a tight fit tolerance manner (as shown in FIG. 3 ).

As shown in Figures 2 to 18, it is the combination steps of the above-mentioned conventional externally rotating brushless motor. First, the outer ring surface of the ring magnet 40 is pressed into the inner edge surface of the hollow shell 50 (as shown in Figures 4 to 6), and the shaft sleeve 20 is inserted from the direction of its outer flange 21 to the direction of the communication hole 13 of the fixed shaft 10 until the outer flange 21 is close to the position of the communication hole 13 (as shown in Figures 8 and 9). 0. Align the shaft end of the duct 12 without the wire slot (as shown in Figures 10 and 11), and then place the axial hole 33 on the outer edge of the shaft sleeve 20 until it contacts the outer flange 21 of the shaft sleeve 20, and then pass the wire W into the wire slot duct 12 through the communication hole 13 of the fixed shaft 10 until it passes outside the shaft end of the fixed shaft 10 (as shown in Figure 12). Align and nest on the stator wire Finally, put the two bearings 64 into the through-holes 63 on the inner surface of the two side covers 60 (as shown in Figure 14 and Figure 15), and then insert them respectively from the two shaft ends of the fixed shaft 10, until the round convex rings 65 of the two side covers 60 are pressed into the inner ring surface of the end of the hollow shell 50 (as shown in Figure 16 and Figure 17), and the conventional external rotation brushless motor is completed. combination (as shown in Figure 2 and Figure 3).

As shown in Figures 18 to 21, the structure of the conventional centrifugal wind wheel 70 is composed of two frame ring plates 71, a middle partition plate 72 and a plurality of straight blades 73, wherein the plurality of straight blades 73 are arranged in parallel with each other quickly through the operation of a conventional inserting machine to form a circular ring and penetrate the middle partition plate 72, and finally insert and fix the two ends of all the straight blades 73 on the two frame ring plates 71 respectively, so that all the straight blades The blade 73 is perpendicular to the frame ring plate 71 and the middle partition plate 72 and is mutually fixed (as shown in FIG. 20 and FIG. 21 ). In addition, the middle partition plate 72 is located in the center between the two frame ring plates 71, and a circular opening 74 is provided in the center thereof, and several perforations 75 arranged at the same interval are provided on the surrounding plate surface of the circular opening 74, so as to be combined and fixed with the externally rotating brushless motor 1.

As shown in Figures 18 to 24, it is the combined structure of the above-mentioned conventional outward-rotating brushless motor 1 and the conventional centrifugal wind wheel 70. It uses a hollow collar body 80 to connect the outward-rotating brushless motor 1 and the centrifugal wind wheel 70. The hollow collar body 80 is cylindrical and has a circular hole 81 in the center. The diameter of the circular hole 81 is the same as the outer diameter of the hollow shell 50 of the outward-rotating brushless motor 1, and can be nested in the outward-rotating brushless motor 1. On the outer diameter surface of the hollow casing 50, near one of the end edges of the circular hole 81, a disc 82 protrudes outwards, the disc 82 is perpendicular to the circular hole 81, and several threaded holes 83 are provided on the disc 82, and the number and position of the threaded holes 83 are the same as and corresponding to the number and position of the perforations 75 on the partition plate 72 in the centrifugal wind wheel 70 (as shown in Figure 20 and Figure 22). combination At this time, first put the round hole 81 of the hollow collar body 80 on the surface of the hollow housing 50 of the externally rotating brushless motor 1, and then perform welding on the positions where the two ends of the round hole 81 of the hollow collar body 80 are in contact (as shown by the four blackened triangles in Figure 23), so that the hollow collar body 80 and the outwardly rotating brushless motor 1 are combined and fixed (Note: Some production processes do not use welding methods, but use quick-drying adhesives to coat the hollow housing 50 instead. But after running for a period of time, the glue will age, resulting in the lack of mutual slippage between the hollow shell 50 and the hollow collar body 80, so it has been picked up and discarded), and then the external rotation brushless motor 1 is inserted into the circular opening 74 of the centrifugal wind wheel 70, and until the disc 82 of the hollow collar body 80 is against the middle partition 72 of the centrifugal wind wheel 70, finally, with The screw S passes through each perforation 75 on the centrifugal wind wheel 70 and is screwed into the threaded hole 83 of the disc 82 (as shown in FIG. 24 ), to complete the combination of the conventional externally rotating brushless motor 1 and the centrifugal wind wheel 70 .

As shown in Figures 3, 18, 19, and 25, after the above-mentioned conventional outward-rotating brushless motor 1 is combined with the hollow collar body 80, it is inserted into the conventional volute 90, and the cut planes 11 on the two shaft ends of the fixed shaft 10 of the outward-rotating brushless motor 1 are inserted into the central holes 93 of the fixing brackets 92 of the two side plates 91 in the volute 90 (as shown in Figures 19 and 25), and the production of the conventional centrifugal turbo fan 2 can be completed (as shown in Figure 18). When actuating, the wire W exposed outside the fixed shaft 10 is first connected to an external circuit driver (not shown in the figure). After the power is input, the circuit driver will pass the current through the stator coil 30 of the outward-rotating brushless motor 1 to make the ring magnet 40 generate magnetic induction and start to rotate (as shown in FIG. 3 ), and simultaneously make the hollow shell 50 rotate accordingly (as shown in FIG. 2 central hole 93, so the whole fixed shaft 10 will not rotate), and the air intake Wi outside the side plates 91 in the volute 90 is sucked in, and then the supercharged air outlet Wo is discharged from the air outlet 94 of the volute 90 by the centrifugal wind wheel 70 (as shown in Figure 18 Show). Therefore, the aforementioned conventional centrifugal turbo fan 2 is often installed in household range hoods as a power function for absorbing and exhausting oil fume, or installed in an air purifier as a power function for sucking dirty indoor air and discharging clean air after being filtered by a filter, and other equipment that needs to use suction and exhaust functions. The annual sales volume of new range hoods has reached 10 million units (not including the number of replacement machines in the aftermarket), and as shown in Figure 19 to Figure 25 above, the conventional outward-rotating brushless motor 1 and the conventional centrifugal fan 70 must use a large number of screws S to lock and connect the outward-rotating brushless motor 1 and the centrifugal fan 70 in the mass production combination structure. When the centrifugal wind wheel 70 and the hollow ring body 80 are nested with each other, it is necessary to visually judge whether the direction of the centrifugal wind wheel 70 is correct, which will also increase the difficulty of the assembly process and affect the speed of mass production assembly. At the same time, the hollow ring body 80 needs to be welded after being inserted into the surface of the hollow shell 50 of the externally rotating brushless motor 1. It is very important to eliminate such many defects.

The main purpose of the present invention is to provide a "combined structure of an externally rotating brushless motor and a centrifugal wind wheel", which includes: a conventional externally rotating brushless motor, which has a stator coil and a ring magnet inside, and the outside is composed of a cylindrical hollow casing, two disk-shaped side covers and a fixed shaft, wherein the two side covers are respectively pressed on the two end ports of the hollow casing, the fixed shaft is placed at the central axis of the hollow casing, and the ends of the two shafts pass through the outside of the two side covers respectively; The wind wheel is composed of two frame ring plates, a middle partition and a plurality of straight blades, wherein the plurality of straight blades are arranged in parallel to each other to form a ring shape and penetrate the middle partition. The two end parts are respectively inserted and fixed on the two frame ring plates, wherein the middle partition is located at the central position between the two frame ring plates, and a circular opening is set in the center, and several perforations arranged at the same interval are provided on the surrounding plate surface of the circular opening; a left connecting plate is a hollow disc body integrally punched and formed by metal material, the upper half of which is set as a round tube body, and the lower half is set as a flat disc body, and the direction from the bottom of the round tube body to the disc body, The round pipe body and the disc body are connected into one body by an involute horn-shaped arc portion, and the round pipe body and the disc body are perpendicular to each other. The center of the round pipe body is pierced with a through hole, and the inner diameter of the through hole is the same as the outer diameter of the hollow shell of the conventional outrunning brushless motor. The disk body is pierced with several fitting holes, and the diameter of the fitting holes is equal to or slightly larger than the hole diameter of the perforation on the middle partition of the centrifugal wind wheel. The number and position of the fitting holes are the same as and corresponding to the number and position of the holes on the middle partition of the centrifugal wind wheel; The round tube body and the disc body are connected into one body by an involute horn-shaped arc portion, and the round tube body and the disc body are perpendicular to each other. The center of the round tube body is pierced with a through hole, and the inner diameter of the through hole is the same as the outer diameter of the hollow shell of the conventional outrunning brushless motor. Several hollow convex cylinders protrude from the disk body in the direction opposite to the circular tube body, and the outer diameter of the convex cylinders is equal to or slightly smaller than the hole diameter on the partition plate of the centrifugal wind rotor, and the number and position of the convex cylinders are the same as and correspond to the number and position of the perforations on the partition plate of the centrifugal wind rotor. With the design structure of the left coupling disk and the right coupling disk, the mass production of the centrifugal turbo blower can produce During the production process, it can greatly save the cost of the manufacturing process of connecting and fixing the externally rotating brushless motor and the centrifugal wind wheel, and at the same time can avoid the cost of using screws and the operation of welding.

Another purpose of the present invention is to provide a "combined structure of external rotary -rotary non -brush motor and centrifugal wind wheel". With the design structure of the left and right connectors in the present invention, it will connect the fixed external rotor -free motor and centrifugal wind wheels, and put it in the snail shell for wind suction and exhaust. In addition to increasing the wind pressure output of the centrifugal snail wheel fan, the noise value of the overall operation will also be reduced.

1‧‧‧Outward rotation brushless motor

2‧‧‧Centrifugal turbo fan

10‧‧‧fixed shaft

11‧‧‧cutting plane

12‧‧‧Trough pipe

13‧‧‧connecting holes

20‧‧‧shaft sleeve

21‧‧‧outer flange

30‧‧‧Stator coil

31‧‧‧silicon steel sheet

32‧‧‧Enameled wire

33‧‧‧Axial hole

40‧‧‧ring magnet

50‧‧‧Hollow shell

51‧‧‧Concave ring groove

60‧‧‧side cover

61‧‧‧outer side

62‧‧‧inner side

63‧‧‧through hole

64‧‧‧Bearing

65‧‧‧Convex ring

66‧‧‧groove

70‧‧‧Centrifugal Wind Wheel

71‧‧‧Frame ring plate

72‧‧‧Intermediate partition

73‧‧‧straight blade

74‧‧‧round opening

75‧‧‧perforation

80‧‧‧Hollow ring body

81‧‧‧round hole

82‧‧‧Disc

83‧‧‧Threaded hole

90‧‧‧volute

91‧‧‧Both sides

92‧‧‧fixing bracket

93‧‧‧Central hole

94‧‧‧air outlet

200‧‧‧Left joint plate

300‧‧‧Right connecting plate

201, 301‧‧‧Circular tube body

202, 302‧‧‧disc body

203, 303‧‧‧arc part

204, 304‧‧‧through hole

205‧‧‧Fitting hole

206, 306‧‧‧stop piece

305‧‧‧Convex cylinder

C‧‧‧Vibration Washer Ring

D1, D5‧‧‧inner diameter

D2, D6‧‧‧outer diameter

D3, D4‧‧‧aperture

W‧‧‧Wire

Wi‧‧‧Into the wind

Wo‧‧‧out the wind

S‧‧‧Screw

V1‧‧‧Riveting column jig

V2‧‧‧Riveting Seat Fixture

Figure 1: An exploded perspective view of a conventional externally rotating brushless motor.

Figure 2: A three-dimensional combination diagram of a conventional externally rotating brushless motor.

Fig. 3: Sectional view of line 3-3 in Fig. 2.

Figure 4: Sectional view of line 4-4 in Figure 1.

Fig. 5: The sectional view of line 5-5 in Fig. 1.

Fig. 6: A cross-sectional view of a combination of a ring magnet and a hollow casing in a conventional externally rotating brushless motor.

Fig. 7: The sectional view of line 7-7 in Fig. 1.

Fig. 8: The sectional view of line 8-8 in Fig. 1.

Fig. 9: A sectional view of a combination of a fixed shaft and a shaft sleeve in a conventional externally rotating brushless motor.

Fig. 10: The sectional view of line 10-10 in Fig. 1.

Fig. 11: A combined sectional view of a stator coil and a shaft sleeve in a conventional externally rotating brushless motor.

Fig. 12: It is one of the combined cross-sectional schematic diagrams of a conventional externally rotating brushless motor.

Fig. 13: The second combined sectional schematic diagram of a conventional externally rotating brushless motor.

Fig. 14: the sectional view of line 14-14 in Fig. 1.

Fig. 15: The third combined sectional schematic diagram of a conventional externally rotating brushless motor.

Fig. 16: The fourth schematic cross-sectional view of a combination of a conventional externally rotating brushless motor.

Fig. 17: is the fifth combined sectional schematic diagram of a conventional externally rotating brushless motor.

Fig. 18: A three-dimensional schematic diagram of a conventional centrifugal turbo fan.

Fig. 19: A three-dimensional exploded view of a conventional centrifugal turbo fan.

Fig. 20: a perspective view of a conventional centrifugal wind wheel.

Fig. 21: the sectional view of line 21-21 in Fig. 20.

Fig. 22: It is one of the combined cross-sectional schematic diagrams of a conventional externally rotating brushless motor and a hollow collar body.

Fig. 23: The second schematic cross-sectional view of the combination of a conventional externally rotating brushless motor and a hollow collar body.

Fig. 24: A schematic cross-sectional view of a combination of a conventional externally rotating brushless motor and a centrifugal wind wheel.

Fig. 25: A schematic sectional view of a conventional centrifugal turbo fan.

Fig. 26 is a three-dimensional schematic view of the first embodiment of the present invention installed in a conventional centrifugal turbo fan.

Fig. 27 is a three-dimensional exploded schematic view of the first embodiment of the present invention installed in a conventional centrifugal turbo fan.

Fig. 28 is an exploded perspective view of the first embodiment of the present invention.

Fig. 29: is the perspective view of the left connecting plate in the first embodiment of the present invention.

Fig. 30: the sectional view of line 30-30 in Fig. 29.

Fig. 31: is the perspective view of the right connecting plate in the first embodiment of the present invention.

Fig. 32: the sectional view of line 32-32 in Fig. 31.

Fig. 33 is one of the assembled cross-sectional schematic diagrams of the first embodiment of the present invention.

Fig. 34 is the second combined sectional schematic diagram of the first embodiment of the present invention.

Fig. 35: is the third combined sectional schematic diagram of the first embodiment of the present invention.

Fig. 36: is the fourth combined sectional schematic view of the first embodiment of the present invention.

Fig. 37: is the fifth combined sectional schematic diagram of the first embodiment of the present invention.

Fig. 38 is one of the cross-sectional schematic diagrams of riveting in the first embodiment of the present invention.

Fig. 39: It is the second schematic cross-sectional view of riveting in the first embodiment of the present invention.

Fig. 40 is the third schematic cross-sectional view of riveting in the first embodiment of the present invention.

Fig. 41 is the sixth combined cross-sectional schematic diagram of the first embodiment of the present invention.

Fig. 42 is a schematic cross-sectional view of the first embodiment of the present invention installed in a conventional centrifugal turbo fan.

Fig. 43: It is a perspective view of the left connecting plate in the second embodiment of the present invention.

Fig. 44: the sectional view of line 44-44 in Fig. 43.

Fig. 45; is the perspective view of the right coupling plate in the second embodiment of the present invention.

Fig. 46: the sectional view of line 46-46 in Fig. 45.

Fig. 47 is a schematic diagram of a hollow shell of an externally rotating brushless motor in the second embodiment of the present invention.

Fig. 48 is a perspective view of the side cover of the externally rotating brushless motor in the second embodiment of the present invention.

Fig. 49 is a top view of the side cover of the externally rotating brushless motor in the second embodiment of the present invention.

Fig. 50 is one of the assembled cross-sectional schematic diagrams of the second embodiment of the present invention.

Fig. 51 is the second combined sectional schematic diagram of the second embodiment of the present invention.

Fig. 52 is the third schematic cross-sectional view of the second embodiment of the present invention.

Fig. 53: It is a side view of the combination of the right coupling plate and the side cover in the second embodiment of the present invention.

Fig. 54 is the fourth combined sectional schematic view of the second embodiment of the present invention.

Fig. 55 is the fifth combined cross-sectional schematic diagram of the second embodiment of the present invention.

Fig. 56 is a schematic cross-sectional view of the second embodiment of the present invention installed in a conventional centrifugal turbo fan.

As shown in Fig. 1 to Fig. 5, Fig. 20, Fig. 21 and Fig. 26 to Fig. 33, it is the "exterior" of the present invention The first embodiment of the combined structure of a rotary brushless motor and a centrifugal wind wheel", which includes: a conventional externally rotating brushless motor 1, which has a stator coil 30 and an annular magnet 40 inside, and a cylindrical hollow casing 50, two disc-shaped side covers 60 and a fixed shaft 10 on the outside, wherein the two side covers 60 are respectively pressed on the two ends of the hollow casing 50, and the fixed shaft 10 is inserted at the central axis of the hollow casing 50. The end portions of the two shafts pass through the two side covers 60 respectively; a centrifugal wind wheel 70 is composed of two frame ring plates 71, a middle partition plate 72 and a plurality of straight blades 73, wherein the plurality of straight blades 73 are arranged in parallel to each other to form an annular shape and penetrate the middle partition plate 72, and then insert and fix the two ends thereof respectively on the two frame ring plates 71, wherein the middle partition plate 72 is located in the center between the two frame ring plates 71, and the center is set A circular opening 74 is pierced, and several perforations 75 arranged at the same interval are provided on the surrounding plate surface of the circular opening 74; a left coupling plate 200 is a hollow disc body integrally stamped and formed by metal material, the upper half of which is provided as a circular tube body 201, and the lower half is provided with a flat disc body 202, and from the bottom of the circular tube body 201 to the direction of the disc body 202, the horn-shaped arc portion 203 is involutely opened to the circular tube body 2 01 is integrated with the disc body 202, and the round tube body 201 and the disc body 202 are perpendicular to each other, wherein, the center of the round tube body 201 is pierced with a through hole 204, and the inner diameter D1 of the through hole 204 (as shown in FIG. 30 ) is the same as the outer diameter D2 (as shown in FIG. 5 ) of the hollow shell 50 of the conventional externally rotating brushless motor 1. The tolerance between the inner diameter D1 and the outer diameter D2 is the same. For tight fit (Interference fit), the round tube body 201 can be firmly placed on the surface of the hollow shell 50 of the conventional external rotation brushless motor 1, and several fitting holes 205 are pierced on the disc body 202. The number and position of the fitting holes 205 are the same as the number and position of the perforations 75 on the middle partition plate 72 of the centrifugal wind wheel 70. And corresponding; And a right connecting plate 300, the hollow disc body that is integrally stamped and formed by metal material, its upper half is provided with a circular tube body 301, and the lower half is provided with a flat disc body 302, and from the bottom of the circular tube body 301 to the direction of the disc body 302, the circular tube body 301 is connected with the disc body 302 to form a single body with the horn-shaped arc portion 303 gradually opening, and the circular tube body 301 and the disc body 302 are connected into one body, and the circular tube body 301 is connected with the disc body 302 The disc bodies 302 are perpendicular to each other, wherein a through hole 304 is perforated in the center of the round tube body 301, and the inner diameter D5 of the through hole 304 (as shown in FIG. 32 ) is the same as the outer diameter D2 (as shown in FIG. 5 ) of the hollow housing 50 of the conventional outwardly rotating brushless motor 1 . On the surface of the hollow casing 50 of the conventional externally rotating brushless motor 1, several hollow convex cylinders 305 protrude from the disc body 302 in the direction opposite to the circular tube body 201, and the outer diameter D6 of the convex cylinders 305 (as shown in FIG. The number and position of the perforations 75 on the intermediate partition 72 are the same and correspond to each other.

As shown in Figures 33 to 42, it is the combination steps of the first embodiment of the above-mentioned "combined structure of an externally rotating brushless motor and a centrifugal wind wheel" of the present invention and a conventional centrifugal wind wheel 70. First, the disk body 302 of the right coupling plate 300 is nested on the surface of the hollow shell 50 facing one end of the externally rotating brushless motor 1 (as shown in Figure 33), and until the end of the hole 304 through the hole is aligned with the end of the hollow shell 50 (as shown in Figure 34), and then Any one of the frame ring plates 71 of the centrifugal wind wheel 70 (it is not necessary to prejudge which frame ring plate 71 to select by visual inspection is correct) is attached to the right coupling plate 300 until all the perforations 75 on the middle partition plate 72 of the centrifugal wind wheel 70 are covered with the corresponding convex cylinders 305 on the disc body 302 of the right coupling plate 300 (as shown in Figure 35 and its enlarged view As shown), according to the above-mentioned right coupling plate 300, the disc body 202 of the left coupling disc 200 is placed on the surface of the hollow shell 50 at the other end of the outwardly rotating brushless motor 1 (as shown in FIG. 36 ), until the end of the through hole 204 is aligned with the other end of the hollow shell 50. At this time, all the fitting holes 205 on the disc body 202 in the left coupling disc 200 will also just fit on all the right coupling discs 300 On each convex cylinder 305 on the middle disc body 302 (as shown in FIG. 37 ), finally, use the riveting column jig V1 and the riveting seat jig V2 on the riveting special machine to respectively push the hollow interior of the convex cylinder 305 and the outer edge of the protruding cylinder 305 (as shown in FIG. 38 ), and then carry out mutual clinching riveting (as shown in FIG. 39 ), so that the outer edge of the convex cylinder 305 can completely cover the fitting hole 205 of the left coupling plate 200 (as shown in FIG. 40 ), and at the same time clamp the intermediate partition plate 72 of the centrifugal wind wheel 70 between the sleeve hole 205 and the convex cylinder 305 (as shown in FIG. 41 ), and quickly achieve the process of combining and fixing the externally rotating brushless motor 1 and the centrifugal wind wheel 70.

Therefore, through the design structure of the left connecting plate 200 and the right connecting plate 300 in the present invention, in the process of mass producing the centrifugal turbo fan 2, the cost of the manufacturing process of connecting and fixing the outwardly rotating brushless motor 1 and the centrifugal fan wheel 70 can be greatly saved, and at the same time, the cost of using screws and the work of welding can be avoided. In addition, when the outwardly rotating brushless motor 1 and the centrifugal fan wheel 70 are placed in the volute 90 for air suction and exhaust, the left connecting plate 200 The arc portion 203 and the arc portion 303 of the right connecting plate 300 have the effect of diverting air (as shown by the arrows of the wind inlet Wi and the wind outlet Wo in Figure 42), which can not only increase the wind pressure output of the centrifugal turbo fan 2, but also reduce the noise value during the overall operation.

As shown in Fig. 43 to Fig. 50, it is the second embodiment of the "combined structure of an externally rotating brushless motor and a centrifugal wind wheel" of the present invention, wherein, the end surface of the circular tube body 201 in the left coupling plate 200 intersects with the through hole 204. On the wall surface of the inner edge hole, several stop pieces 206 are protrudingly provided (as shown in FIGS. 43 and 44 ), and the end surface of the circular tube body 301 in the right coupling plate 300 intersects with the through hole 304. On the wall surface of the inner edge hole, several stop pieces 306 are protruded (as shown in Fig. 45 and Fig. 46), and several grooves 66 are recessed inwardly on the outermost surface of the two side covers 60 of the externally rotating brushless motor 1 (as shown in Fig. 48 and Fig. 49 ), and one or more concave ring grooves 51 are recessed on the outer surface of the hollow shell 50 near the two ports, which can be used for nesting the anti-vibration washer ring C (as shown in Fig. 50 ). The number of stop pieces 206 of 1, the number of stop pieces 306 on the round tube body 301 and the number of grooves 66 on the two side covers 60 are the same and the positions are corresponding.

As shown in Fig. 38, Fig. 39, Fig. 40, Fig. 50 to Fig. 56, it is the combination steps of the second embodiment of the "combined structure of the externally rotating brushless motor and the centrifugal wind wheel" of the present invention and the conventional centrifugal wind wheel 70. First, the anti-vibration washer ring C is inserted into the concave ring groove 51 of the hollow shell 50, and then the disc body 302 of the right coupling plate 300 is placed on the surface of the hollow shell 50 at one end of the outwardly rotating brushless motor 1 (as shown in Fig. 50 and 51), and until the end of the hole 304 is aligned with the end of the hollow shell 50 (as shown in Figure 52), each stop piece 306 on the inner edge hole wall of the circular tube body 301 in the right coupling plate 300 will fit into each groove 66 of the side cover 60 (as shown in the enlarged view of Figure 52 and Figure 53), and then any frame ring plate 71 of the centrifugal wind wheel 70 (no need to prejudge which one is selected by visual inspection) The frame ring plate 71 is all correct) to the right coupling plate 300 direction, and until all the perforations 75 on the middle partition plate 72 of the centrifugal fan 70 are sleeved on the corresponding convex cylinders 305 on the disc body 302 in the right coupling disc 300 (as shown in Figure 54 and its enlarged view), then the disc body 202 of the left coupling disc 200 is directed towards the other end of the outward rotation brushless motor 1 according to the aforementioned right coupling disc 300 The empty housing 50 is nested on the surface until the end of the through hole 204 is aligned with the other end of the hollow housing 50. At this time, each stop piece 206 on the inner edge hole wall of the circular tube body 201 in the left coupling plate 200 will also fit into each groove 66 of the other side cover 60 (as shown in the left enlarged view of FIG. 55 ). It will also just fit on each convex cylinder 305 on the disk body 302 in all right connecting disks 300 (as shown in the enlarged view on the right side of Figure 55). Finally, use the riveting column jig V1 and riveting seat jig V2 on the riveting special machine to respectively push the hollow interior of the convex cylinder 305 and the outer edge of the convex cylinder 305 (as shown in Figure 38), and then carry out mutual close riveting (as shown in Figure 39), the outer edge of the convex cylinder 305 can be made The part completely covers the fit hole 205 of the left coupling plate 200 (as shown in FIG. 40 ), and at the same time clamps the middle partition 72 of the centrifugal wind wheel 70 between the fit hole 205 and the convex cylinder 305 (as shown in FIG. 41 ), so as to quickly achieve the process of combining and fixing the externally rotating brushless motor 1 and the centrifugal wind wheel 70.

Furthermore, in the second embodiment of the present invention, each stop piece 206 on the opening hole 204 in the left coupling plate 200, and each stop piece 306 on the opening hole 304 in the right coupling plate 300 are respectively embedded in each groove 66 on the outermost surface of the two side covers 60 in the external rotation brushless motor 1 (as shown in FIGS. When the centrifugal wind wheel 70 rotates, it has a better transmission function, and there will never be a lack of mutual slipping between the outward-rotating brushless motor 1 and the centrifugal wind wheel 70. In addition, the design structure of the left coupling plate 200 and the right coupling plate 300 can greatly save the process cost of the external-rotating brushless motor 1 and the centrifugal wind wheel 70 in the process of mass production. The vibration generated by the rotation of the hollow shell 50 will also be absorbed by the anti-vibration washer ring C (as shown in FIG. 56 ) inserted into the concave ring groove 51 of the hollow shell 50, thereby having the effect of eliminating vibration noise.

The left coupling plate 200 and the right coupling plate 300 in the first embodiment and the second embodiment of the present invention described above can be made of plastic material by integral injection molding instead.

To sum up, the present invention has the design structure of the left connecting plate and the right connecting plate, and can greatly save the cost of the manufacturing process of connecting and fixing the outwardly rotating brushless motor and the centrifugal fan wheel. It can avoid the cost of using screws and welding work, has the effect of diversion, can increase the wind pressure output of the centrifugal turbo fan, and can reduce the noise level of the centrifugal turbo fan when it is in operation, and can ensure that the external rotation brushless motor and the centrifugal wind wheel do not slip off each other. It is indeed in line with the high utilization and creativity of the industry.

1‧‧‧Outward rotation brushless motor

10‧‧‧fixed shaft

50‧‧‧Hollow shell

60‧‧‧side cover

70‧‧‧Centrifugal Wind Wheel

71‧‧‧Frame ring plate

72‧‧‧Intermediate partition

73‧‧‧straight blade

74‧‧‧round opening

75‧‧‧perforation

201, 301‧‧‧Circular tube body

202, 302‧‧‧disc body

303‧‧‧Arc

204, 304‧‧‧through hole

205‧‧‧Fitting hole

305‧‧‧Convex cylinder

Claims (10)

A combined structure of an externally rotating brushless motor and a centrifugal wind wheel, which includes: an externally rotating brushless motor, which has a stator coil and a ring magnet inside, and is composed of a cylindrical hollow casing, two disk-shaped side covers and a fixed shaft on the outside, wherein the two side covers are respectively pressed on the two end ports of the hollow casing, the fixed shaft is placed at the central axis of the hollow casing, and the two ends of the fixed shaft pass through the two side covers respectively; A plate, a middle partition and a plurality of straight blades are combined. Among them, the plurality of straight blades are arranged in parallel to each other to form a ring shape and penetrate the middle partition, and then insert and fix their two ends respectively on the two frame ring plates. The middle partition is located in the center between the two frame ring plates, and a circular opening is set in the center, and several perforations arranged at the same interval are opened on the surrounding plate of the circular opening; , the upper half is set as a round tube, the lower half is set as a flat disc, and the horn-shaped arc is gradually opened from the bottom of the round tube to the direction of the disc. The number and position of the fitting holes are the same as and corresponding to the number and position of the perforations on the partition plate of the centrifugal fan; and a right coupling plate, a hollow disc body formed by integral stamping of metal material. , wherein, the center of the circular tube body is pierced with a through hole, which can be nested on the surface of the hollow shell of the externally rotating brushless motor, and several hollow convex cylinders are protruded from the disc body in the direction opposite to the circular tube body, and the number and position of the convex cylinders are the same as and corresponding to the number and position of the perforations on the partition plate of the centrifugal wind wheel. As described in item 1 of the patent scope of the application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, its Among them, the inner diameter of the through hole of the left coupling plate is the same as the outer diameter of the hollow shell of the externally rotating brushless motor, and the dimensional matching tolerance between the inner diameter of the through hole and the outer diameter of the hollow shell is a tight fit. As described in item 1 of the scope of the patent application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, wherein the inner diameter of the through hole of the right coupling plate is the same as the outer diameter of the hollow housing of the externally rotating brushless motor, and the dimensional matching tolerance between the inner diameter of the through hole and the outer diameter of the hollow housing is a tight fit. As described in item 1 of the scope of the patent application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, wherein the outer diameter of the convex cylinder of the right coupling plate is equal to or slightly smaller than the diameter of the hole on the middle partition of the centrifugal wind wheel. A combined structure of an externally rotating brushless motor and a centrifugal wind wheel, which includes: an externally rotating brushless motor, which has a stator coil and a ring magnet inside, and is composed of a tubular hollow casing, two disk-shaped side covers and a fixed shaft on the outside, wherein the two side covers are respectively pressed on the two end ports of the hollow casing, the fixed shaft is placed at the central axis of the hollow casing, and the two ends of the fixed shaft pass through the two side covers respectively, and the outermost edges of the two side covers face inward There are several grooves; a centrifugal wind wheel is composed of two frame ring plates, a middle partition plate and a plurality of straight blades, wherein the plurality of straight blades are arranged in parallel to each other to form a ring shape and penetrate through the middle partition plate, and then insert and fix their two ends respectively on the two frame ring plates, wherein the middle partition plate is located in the center between the two frame ring plates, and a circular opening is provided in the center, and several perforations arranged at the same interval are provided on the surrounding plate surface of the circular opening; The connecting plate is a hollow disc formed by integral stamping of metal material, the upper half of which is set as a round tube, and the lower half is set as a flat disc, and from the bottom of the round tube to the direction of the disc, the horn-shaped arc part is gradually opened to connect the round tube and the disc into one body, and make the round tube and the disc perpendicular to each other. There is a through hole in the center of the round tube, which can be placed in the hollow shell of the external rotation brushless motor On the surface, the disc body is perforated with several fitting holes. The number and position of the fitting holes are the same as and corresponding to the number and position of the holes on the middle partition plate of the centrifugal wind wheel. On the wall of the inner edge hole, there are several stoppers protruding, and the number and position of the stoppers are the same as the number and position of the grooves in the side cover of the external rotation brushless motor, and the positions correspond to each other; and a right connecting plate, a hollow disc body formed by integral stamping of metal material, the upper half of which is set as a round tube body, and the lower half is set as a flat disc body. The body and the disc body are connected into one body, and the round tube body and the disc body are perpendicular to each other, wherein, the center of the round tube body is pierced with a through hole, which can be sleeved on the surface of the hollow shell of the externally rotating brushless motor. On the disc body, there are several hollow convex cylinders protruding in the direction opposite to the round tube body, and the number and position of the convex cylinders are the same as the number and position of the perforations on the middle partition plate of the centrifugal wind wheel and correspond to each other. On the wall surface of the connected inner edge hole, several stop pieces are protruded, and the number and positions of the several stop pieces are the same as and corresponding to the number and position of the grooves in the side cover of the external rotation brushless motor. As described in item 5 of the scope of the patent application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, wherein, the outer surface of the hollow shell near the two ports is provided with one or more ring grooves. As described in Item 5 of the scope of the patent application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, wherein the inner diameter of the through opening of the left coupling plate is the same as the outer diameter of the hollow housing of the externally rotating brushless motor, and the dimensional matching tolerance between the inner diameter of the through opening and the outer diameter of the hollow housing is a tight fit. As described in item 5 of the scope of the patent application, the combined structure of the external rotation brushless motor and the centrifugal wind wheel, wherein, the inner diameter of the through opening of the right coupling plate is the same as the outer diameter of the hollow housing of the external rotation brushless motor, and the dimensional matching tolerance between the inner diameter of the through opening and the outer diameter of the hollow housing is a tight fit. As described in item 5 of the scope of the patent application, the combined structure of the externally rotating brushless motor and the centrifugal wind wheel, wherein the outer diameter of the convex cylinder of the right coupling plate is equal to or slightly smaller than the hole diameter of the hole on the middle partition of the centrifugal wind wheel. As the combined structure of the externally rotating brushless motor and the centrifugal wind wheel described in item 1 or item 5 of the scope of the patent application, the left connecting plate and the right connecting plate can be further made of plastic material for integral injection molding.

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