Fixed wind wheel adopting double-output-shaft double-side welding, riveting and rubber coating process

Abstract

The utility model discloses a double-output-shaft double-side welding riveting rubber coating technology fixed wind wheel which comprises an outer shell, an impeller, a PCB and a motor, and the impeller forms a rotor structure through a rubber coating shell wrapping the outer portion of a motor shell and is movably installed on a stator base through a shaft core matched with a bearing. A shaft seat is arranged in the middle of the shaft core, and the shaft core forms a double-output-shaft structure with a first shaft section and a second shaft section on the two sides of the shaft seat respectively. The shaft seat and the shaft core are fixed through welding, the shaft seat and the motor shell are fixed through welding, a plurality of riveting claws are arranged on the peripheral edge of the shaft seat, and the shaft seat and the motor shell are riveted and fixed through the riveting claws. Therefore, the assembly strength between the shaft core and the shaft seat and between the shaft seat and the motor shell can be obviously improved. And a plastic coating part, a supporting and clamping part and the like are arranged between the rubber coating shell and the motor shell for reinforcing and fixing, so that the combination stability of the motor shell and the rubber coating shell is improved, and the structural strength of the whole impeller is higher. Therefore, the stability of the wind wheel during high-speed operation is better, and the wind wheel is not easy to loosen in a high-temperature and high-speed working environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan blower technology field especially relates to a kind of cross-flow fan / wind wheel mainly applied to automobile air conditioner, new energy industry, industrial control, server, game machine equipment, air conditioner cabinet, intelligent household appliance and other products. BACKGROUND

[0002] The impeller of cross-flow fan is multi-leaf, long cylindrical, with forward multi-wing blade. When the impeller rotates, the airflow enters the blade cascade from the open part of the impeller, passes through the inside of the impeller, and is discharged into the shell from the other blade cascade, forming working airflow. Cross-flow fan has the advantages of low noise, uniform air outlet, and unrestricted axial length. Therefore, cross-flow fan is widely used in many products, such as automobile air conditioner, power supply, industrial control, server, industrial equipment, air conditioner cabinet, etc. The current cross-flow fan usually has the following shortcomings: first, the metal wind wheel and motor shell are generally pressed into assembly structure. This kind of traditional process has high power consumption, poor balance and poor corrosion resistance. The conventional rubber-coated wind wheel shaft core and shaft seat are generally fixed by ordinary pressure riveting, or one side shaft is used. This method is generally used for ordinary speed or ordinary wind wheel height. If the wind wheel speed is high, the traditional injection molding fixing method is used, which leads to insufficient stability of the combination. The high-speed rotating wind wheel may shake and loosen. Second, the impeller is fixed by combining the rubber-coated shell with the motor shell. However, the rubber-coated shell is usually only injection molded on the outside of the motor shell, and no other effective fixing structure is provided between the two. This leads to insufficient combination strength between the motor and the impeller, and the risk of loosening and deformation under high temperature and high speed working environment. SUMMARY

[0003] The utility model provides a kind of fixed wind wheel of double-out shaft double-face welding riveting rubber-coated process, which has more reasonable assembly structure design, higher combination strength of impeller and motor, and better stability during high-speed operation.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of double-out shaft double-face welding riveting rubber-coated process fixed wind wheel, including shell, impeller, PCB board and motor, motor is installed in the middle of impeller, PCB board and the stator of motor are installed on stator seat, stator seat is fixed by assembly with shell through support frame, impeller is formed into rotor structure by rubber-coated shell coated on the outside of motor shell and is movably installed on stator seat by shaft core and bearing cooperation;The impeller has a plurality of blades arranged along the axial direction, and the blades are connected into an integral structure by connecting ribs;A shaft seat is provided at the middle position of the shaft core, and the shaft core forms a double-out shaft structure with a first shaft segment and a second shaft segment on both sides of the shaft seat;The shaft seat and the shaft core and the shaft seat and the motor shell are fixed by welding, a plurality of rivets are provided on the peripheral edge of the shaft seat, and the shaft seat and the motor shell are riveted and fixed by the rivets.

[0005] Further, a plurality of plastic injection holes are arranged on the motor shell near the side edge, and the plastic injection shell is injected into the motor shell through the plastic injection holes to form a plastic injection part, which is arranged against the top end of the magnet shoe fixed on the inner side wall of the motor shell, and the plastic injection part and the main body of the plastic injection shell form an inner and outer clamping structure for the motor shell.

[0006] Further, a plurality of through holes are arranged on the end surface of the motor shell, some of which are connected to the inside and outside of the motor to form a heat dissipation structure for the motor, and the other through holes are injected with glue when the plastic injection shell is formed to form an auxiliary locking structure for the motor shell.

[0007] Further, a plurality of through holes are arranged on the end surface of the motor shell, some of which are connected to the inside and outside of the motor to form a heat dissipation structure for the motor, and the other through holes are injected with glue when the plastic injection shell is formed to form an auxiliary locking structure for the motor shell.

[0008] Further, the first shaft section of the shaft core extends into the middle tube of the stator seat, and the first bearing and the second bearing are arranged in the middle tube to fix the first shaft section of the shaft core, the first bearing is arranged at the end position of the first shaft section, and the second bearing is arranged at the position close to the shaft seat. A flat spring is arranged between the second bearing and the shaft seat through a nylon gasket to press the second bearing.

[0009] Further, a clamping groove is arranged at the position close to the end of the second shaft section, a spring is sleeved at the position of the second shaft section outside the clamping groove, and a clamping ring is clamped in the clamping groove to press the spring; a third bearing is arranged at the end of the second shaft section, and the spring presses the third bearing; the third bearing is embedded in a flexible support sleeve, the support sleeve is installed in a second air guide ring, and the second air guide ring is fixed at one side end of the shell; the first bearing and the second bearing have the same size, and the third bearing has a size smaller than that of the second bearing.

[0010] Further, a first air guide ring is fixed on the other side end of the shell through a damping pad, and the support frame is assembled and fixed with the first air guide ring.

[0011] Further, at least one reinforcing ring is arranged on the periphery of each blade of the impeller, and the reinforcing ring is connected to the outer side of each blade to form a reinforcing structure for the impeller.

[0012] Further, the end of the first shaft section has a threaded head or a clamping ring groove, and a nut or a clamping ring is arranged on the threaded head to fix the first bearing.

[0013] Further, the outer edge of the shaft seat and the motor shell are welded to form a reinforcing and fixing structure.

[0014] The utility model discloses a welding fixing is adopted to the axle core and axle seat, riveting + welding fixing is adopted between the axle seat and motor shell, and the assembly strength between the axle core and axle seat and the axle seat and motor shell can be improved obviously. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole section structure diagram of the utility model;

[0016] Figure 2 It is Figure 1 It is the partial enlarged view of the motor and axle core assembly structure in the utility model;

[0017] Figure 3 It is the fan blade stereogram;

[0018] Figure 4 It is the section schematic view of axle core and motor shell assembly structure;

[0019] Figure 5 It is the plane schematic view of motor shell.

[0020] In the drawing, 1 is the shell, 2 is the impeller, 21 is the rubber-coated shell, 22 is the plastic-coated part, 23 is the Toka part, 3 is the motor shell, 31 is the plastic-coated hole, 32 is the through hole, 4 is the axle seat, 41 is the rivet, 5 is the axle core, 51 is the first axle section, 52 is the second axle section, 53 is the threaded head, 54 is the clamping groove, 61 is the first bearing, 62 is the second bearing, 63 is the third bearing, 7 is the stator, 8 is the PCB board, 9 is the stator seat, 10 is the support frame, 11 is the first air guide ring, 12 is the second air guide ring, 13 is the support sleeve, 14 is the spring, 15 is the clasp, 16 is the nut, 17 is the butterfly spring, 18 is the reinforcing ring. DETAILED DESCRIPTION

[0021] In the embodiment, refer to Figures 1-5The double-outlet-shaft double-face-welding riveting rubber-coating process fixed wind wheel, including a shell 1 (such as volute), an impeller 2, a PCB board 8 and a motor, the motor is installed in the middle of the impeller 2, the PCB board 8 and the stator 7 of the motor are installed on the stator base 9, the stator base 9 is assembled and fixed with the shell 1 through the support frame 10, the impeller 2 forms a rotor structure by being coated with the rubber-coated shell 21 outside the motor shell 3 and is movably installed on the stator base 9 through the shaft core 5 and the bearing; the impeller 2 has a plurality of blades arranged along the axial direction, and the blades are connected into an integral structure through connecting ribs; the shaft core 5 is provided with a shaft seat 4 at the middle position of the shaft core 5, and the shaft core 5 forms a double-outlet-shaft structure with a first shaft section 51 and a second shaft section 52 on both sides of the shaft seat 4; the shaft seat 4 and the shaft core 5 and the motor shell 3 are fixed by welding, and a plurality of rivets 41 are arranged on the circumferential edge of the shaft seat 4, and the shaft seat 4 and the motor shell 3 are riveted and fixed through the rivets 41.

[0022] A plurality of plastic-coating holes 31 are arranged on the motor shell 3 near the side edge, and the rubber-coated shell 2 penetrates into the inside of the motor shell 3 through the plastic-coating holes 31 during molding to form a ring-shaped plastic-coating part 22, the plastic-coating part 22 abuts against the top end of the magnetic shoe fixed to the inner side wall of the motor shell 3, and the main body of the rubber-coated shell 2 cooperates with the plastic-coating part 22 to form an inner and outer clamping structure of the motor shell 3, so as to improve the stability of the combination of the rubber-coated shell 2 and the motor shell 3.

[0023] A ring-shaped Toka part 23 extending inward is formed at the bottom end of the rubber-coated shell 2, the bottom end of the motor shell 3 is supported by the Toka part 23 to form a multidirectional coating structure of the motor shell 3, and the stability of the combination of the rubber-coated shell 2 and the motor is further improved.

[0024] A plurality of through holes 32 are further arranged on the end face of the motor shell 3, some of the through holes 32 are connected between the inside and outside of the motor to form a heat dissipation structure of the motor, and the other through holes are injected with glue during molding of the rubber-coated shell 2 to form an auxiliary locking structure of the motor shell 3. For example, a total of eight through holes are left out for three or four for heat dissipation.

[0025] The first shaft section 51 of the shaft core 5 extends into the middle tube of the stator base 9, and the first bearing 61 and the second bearing 62 are arranged in the middle tube for fixing the first shaft section 51 of the shaft core 5, the first bearing 61 is arranged at the end position of the first shaft section 51, the second bearing 62 is arranged at the position of the first shaft section 51 close to the shaft seat 4, and the butterfly spring 17 is arranged between the second bearing 62 and the shaft seat 4 through a nylon gasket to press the second bearing 62.

[0026] The second shaft section 52 of the shaft core 5 is provided with a clamping groove 54 near the end position, the spring 14 is sleeved on the position where the second shaft section 52 is located outside the end of the clamping groove 54, and the clamping ring 15 is clamped in the clamping groove 54 to abut against the spring 14; the third bearing 63 is arranged at the end of the second shaft section 52, and the spring 14 abuts against the third bearing 63; the third bearing 63 is embedded in the elastic supporting sleeve 13 made of rubber, and the supporting sleeve 13 is installed in the second air guide ring 12, and the second air guide ring 12 is fixed on the side end of the shell 1; the first bearing 61 and the second bearing 62 have the same size, and the third bearing 63 has a size smaller than that of the second bearing 62, so that the supporting capacity of the motor is improved, and the two bearings for installing the motor have stronger wear resistance.

[0027] The first air guide ring 11 is fixed on the other side end of the shell 1 through the damping pad, and the supporting frame 10 is assembled and fixed with the first air guide ring 11.

[0028] At least one reinforcing ring 18 is arranged on the periphery of each blade of the impeller 2, and the reinforcing ring 18 is connected with the outer side of each blade to form a reinforcing structure of the impeller 2.

[0029] The end of the first shaft section 51 has a threaded head 53, and the nut 16 is arranged on the threaded head 53 to fix the first bearing 51.

[0030] The outer side edge of the shaft seat 4 and the motor shell 3 are fixed by welding to form a reinforcing fixed structure, so that the riveting of the rivet claws 41 forms double fixation.

[0031] The above has described the utility model in detail, the above is described, only for the preferred embodiment of the utility model, cannot limit the utility model implementation scope, namely, all equivalent changes and modifications made according to the scope of the present application should still belong to the utility model coverage.

Claims

1. A double-output shaft, double-sided welded and riveted rubber-coated wind turbine, comprising a housing, an impeller, a PCB board, and a motor, wherein the motor is mounted in the middle of the impeller, the PCB board and the stator of the motor are mounted on a stator base, the stator base is assembled and fixed to the housing by a support frame, the impeller forms a rotor structure by a rubber-coated shell covering the motor housing and is movably mounted on the stator base by a shaft core and bearings; the impeller has several blades arranged axially, and the blades are connected to each other by connecting ribs to form an integral structure; a shaft seat is provided in the middle of the shaft core, and the shaft core forms a double-output shaft structure with a first shaft section and a second shaft section on both sides of the shaft seat, characterized in that: The shaft base is fixed with the shaft core and the motor shell by welding, and a plurality of rivet claws are arranged on the circumferential edge of the shaft base, which are riveted with the motor shell to fix the shaft base and the motor shell.

2. The fixed wind wheel of the double-output-shaft double-sided welding-riveting- glued process, according to claim 1, characterized in that: A plurality of plastic coating holes are arranged on the motor shell near the side edge, and the plastic coating shell penetrates into the motor shell through the plastic coating holes during molding to form a plastic coating part, which abuts against the top end of the magnet shoe fixed on the inner side wall of the motor shell, and the plastic coating part cooperates with the main body of the plastic coating shell to form an inner and outer clamping structure of the motor shell.

3. The fixed wind wheel of double-output-shaft double-sided welding and riveting encapsulation process according to claim 1 or 2, characterized in that: A ring-shaped supporting and clamping part is formed on the bottom end of the plastic coating shell, which supports the bottom end of the motor shell to form a multi-directional clamping structure of the motor shell.

4. The fixed wind wheel of the double-output-shaft double-sided welding-riveting- bonding process, according to claim 2, characterized in that: A plurality of through holes are arranged on the end face of the motor shell, some of which are connected between the inside and outside of the motor to form a heat dissipation structure of the motor, and the others are used for injecting glue during molding of the plastic coating shell to form an auxiliary locking structure of the motor shell.

5. The fixed wind wheel of double-output-shaft double-sided welding and riveting encapsulation process according to claim 1, characterized in that: The first shaft section of the shaft core extends into the middle tube of the stator base, and the first bearing and the second bearing are arranged in the middle tube to fix the first shaft section of the shaft core, the first bearing is arranged at the end position of the first shaft section, the second bearing is arranged at the position close to the shaft base, and the butterfly spring is arranged between the second bearing and the shaft base through the nylon gasket to press the second bearing.

6. The fixed wind rotor of the double-output-shaft double-sided welding-riveting- bonding process according to claim 5, characterized in that: The second shaft section of the shaft core is provided with a clamping groove at the position close to the end, a spring is sleeved at the position of the second shaft section outside the clamping groove, a buckle ring is clamped in the clamping groove to abut against the spring, a third bearing is arranged at the end of the second shaft section, the spring abuts against the third bearing, the third bearing is embedded in an elastic supporting sleeve, the supporting sleeve is installed in a second air guide ring, and the second air guide ring is fixed at one side end of the shell; the first bearing and the second bearing have the same size, and the third bearing has a size smaller than that of the second bearing.

7. The fixed wind rotor of the double-output-shaft double-sided welding-riveting- bonding process according to claim 6, characterized in that: The first air guide ring is fixed on the other side end of the shell through the damping pad, and the supporting frame is assembled and fixed with the first air guide ring.

8. The fixed wind wheel of the double-output-shaft double-sided welding-riveting- bonding process, according to claim 6, characterized in that: At least one reinforcing ring is arranged on the periphery of each blade of the impeller, and the reinforcing ring is connected with the outer side of each blade to form a reinforcing structure of the impeller.

9. The fixed wind rotor of the double-output-shaft double-sided welding-riveting- bonding process according to claim 5, characterized in that: A threaded head or a clamping ring groove is arranged at the end of the first shaft section, and a nut or a clamping ring is arranged on the threaded head to fix the first bearing.

10. The fixed wind rotor of the double-output-shaft double-sided welding-riveting- bonding process according to claim 1, characterized in that: The outer edge of the shaft base and the motor shell are fixed by welding to form a reinforcing fixed structure.

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