A motor structure of a high-power food blender

Abstract

The present invention discloses a motor structure of a high-power food blender, which relates to the technical field of motors and includes a transmission box. One side of the transmission box is fixedly connected with a cylindrical shell, and the upper end of the transmission box is fixedly connected with a main housing. The cylindrical shell and the main housing are both communicated with the transmission box. Two partition plates are fixedly connected to the lower end of the main housing. A hollow shaft is rotatably connected to the upper end of the main housing. A hollow end shaft is fixedly connected to the lower end of the hollow shaft, and the hollow end shaft is rotatably connected to the partition plate. A rotor assembly is installed on the hollow shaft, and a stator winding matching the rotor assembly is arranged on the inner wall of the main housing. A heat dissipation mechanism is arranged on the main housing. By means of the switching mechanism provided in the present invention, the forward and reverse rotation of the output shaft can be realized without changing the rotation direction of the hollow end shaft, so that repeated start-stop operations are not required during work, and the problem of overheating of the motor caused by repeated start-stop is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and specifically to a motor structure for a high-power food blender. Background Art

[0002] The motor is commonly known as a motor. A motor generally includes a stator winding and a rotor. The stator winding includes a stator core and a coil wound around the stator core. The rotor includes a rotating shaft and a rotor core sleeved on the rotating shaft. A permanent magnet is provided on the outer edge of the rotor core. Motors are generally divided into DC motors and AC motors. In a circuit, a motor is represented by the letter M (D in the old standard). Its main function is to generate a driving torque and serve as a power source for common electrical appliances or various machines.

[0003] In a food blender, the motor, as a power component for driving the stirring shaft to rotate, is an essential and important device in the food blender. For example, a frequently-started high-efficiency stirring motor proposed in the prior art CN215027769U includes a stirring motor body. A rotor is arranged inside the stirring motor body. A connecting column is fixedly connected to the right end of the rotor. An installation rod is fixedly connected to the right end of the connecting column. A sleeve is movably sleeved outside the installation rod. A plurality of fan blades are fixedly connected to the outer wall of the sleeve. This motor improves the air circulation around the motor to enhance the heat dissipation effect of the motor by optimizing the fan layout.

[0004] However, in a food blender, for the stirring of food, the stirring shaft needs to rotate forward and backward repeatedly. In the prior art, to achieve the forward and reverse rotation of the stirring shaft, the motor needs to continuously switch the rotation direction. When the motor switches the rotation direction, it needs to stop first and then execute reverse rotation. During the forward and reverse rotation process, the motor needs to experience repeated start and stop. Since the starting current of the motor is large, the repeated start and stop will cause the motor to heat up rapidly, which is particularly serious when applying high-power motors. And the prior art relying only on external heat dissipation is difficult to meet the usage requirements of high-power motors. At the same time, during the forward and reverse rotation process, when the stirring shaft switches from one direction to another direction, it will be subjected to a large reverse force. This reverse force will increase the burden on the motor and may cause the motor to be overloaded under continuous operation, seriously reducing the service life of the motor. In view of the above problems, we provide a motor structure for a high-power food blender. Summary of the Invention

[0005] The purpose of the present invention is to provide a motor structure for a high-power food blender to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A high-power food blender motor structure includes a transmission box. One side of the transmission box is fixedly connected with a cylindrical shell, and the upper end of the transmission box is fixedly connected with a main housing. The cylindrical shell and the main housing are both communicated with the transmission box. The lower end of the main housing is fixedly connected with two partition plates. The upper end of the main housing is rotatably connected with a hollow shaft. The lower end of the hollow shaft is fixedly connected with a hollow end shaft, and the hollow end shaft is rotatably connected with the partition plate. A rotor assembly is installed on the hollow shaft, and a stator winding matched with the rotor assembly is arranged on the inner wall of the main housing. A heat dissipation mechanism is arranged on the main housing;

[0008] A main shaft is rotatably connected to the middle of the side of the transmission box away from the cylindrical shell. A bearing seat is fixedly connected to the side of the transmission box close to the cylindrical shell inside, and the main shaft is rotatably connected with the bearing seat. A commutation mechanism for driving the main shaft to rotate forward and backward in cooperation with the hollow end shaft is arranged inside the transmission box;

[0009] An output shaft is rotatably connected to the middle of the side of the cylindrical shell away from the transmission box. An anti-impact mechanism for preventing the main shaft from being impacted during forward and reverse rotation is arranged inside the cylindrical shell.

[0010] As a further scheme of the present invention: the heat dissipation mechanism includes a plurality of heat dissipation fins. The plurality of heat dissipation fins are evenly distributed and fixedly connected to the outer surface of the main housing. A protective mesh cover is installed between the upper ends of the heat dissipation fins. An outer blade is fixedly connected to the position where the upper end of the hollow shaft penetrates through the main housing. An internal ventilation component for ventilating the inside of the hollow shaft is also arranged inside the main housing.

[0011] As a further scheme of the present invention: the internal ventilation component includes an inner shaft blade. The inner shaft blade is installed at the upper end inside the hollow shaft. A plurality of shaft air holes are arranged at the position of the hollow end shaft between the two partition plates. A plurality of exhaust holes communicating with the cavity formed by the two partition plates are opened at the lower end of the main housing.

[0012] As a further scheme of the present invention: the commutation mechanism includes a first bevel gear. The first bevel gear is installed at the lower end of the hollow end shaft. Inner support plates are fixedly connected to both sides inside the transmission box. A rotating cylinder is rotatably connected to each inner support plate. The rotating cylinder is concentric with the main shaft. A second bevel gear is installed on each rotating cylinder. The two second bevel gears are respectively meshed with both sides of the first bevel gear. First dog clutches are arranged at the opposite ends of the two rotating cylinders. The first dog clutches on the two rotating cylinders are arranged in opposite directions. A transmission component for cooperating with the first dog clutch to drive the main shaft to rotate is arranged on the main shaft.

[0013] As a further solution of the present invention: The transmission assembly includes a switching cylinder, which is slidably connected to the position of the main shaft between the two rotating cylinders. Second dog clutches that cooperate with the first dog clutch are provided at both ends of the switching cylinder. A plurality of sliding grooves are formed in the surface of the main shaft near the middle, and a plurality of inner convex sliders that match the sliding grooves are fixedly connected to the inner wall of the switching cylinder. An action assembly for driving the switching cylinder to move and engage with the first dog clutch is provided at the lower end inside the transmission box.

[0014] As a further solution of the present invention: The action assembly includes fixed seats, which are respectively fixedly connected to both sides of the lower end surface inside the transmission box. Electromagnets are installed in the fixed seats. A sliding rod is fixedly connected between the upper ends of the fixed seats. An iron block is slidably connected to the sliding rod. A dial is fixedly connected to the upper end of the iron block, and the dial is rotatably connected to the switching cylinder. Limit retaining rings are fixedly connected to both sides of the switching cylinder where the dial is located. First springs are sleeved on the sliding rod at the positions between the iron block and the fixed seats.

[0015] As a further solution of the present invention: The anti-impact mechanism includes an inner rotating block, which is fixedly connected to one end of the main shaft close to the cylindrical shell. A plurality of limiting grooves are formed on the surface of the inner rotating block, and the limiting grooves are evenly distributed in a ring shape. T-shaped limiting blocks are slidably connected inside the limiting grooves. Second magnet blocks are installed at the ends of the T-shaped limiting blocks that penetrate out of the limiting grooves, and the magnetic poles of adjacent two second magnet blocks are arranged in opposite directions. Pulling spring grooves are formed on one side of the limiting grooves close to the main shaft, and second pulling springs are installed between the inner end faces of the pulling spring grooves and the T-shaped limiting blocks. A plurality of evenly distributed locking holes are formed on the end face of the inner rotating block far from the transmission box. A sleeve block is fixedly connected to one end of the output shaft close to the transmission box. An inner circular groove is formed at one end of the sleeve block close to the transmission box. The inner rotating block is arranged inside the inner circular groove. First magnet blocks that match the second magnet blocks are embedded on the inner wall of the inner circular groove. A coupling assembly for linking the output shaft and the main shaft by cooperating with the locking holes is provided on the sleeve block.

[0016] As a further solution of the present invention: The coupling assembly includes a plurality of strip-shaped grooves, which are respectively formed on one side of the sleeve block far from the transmission box. Side sliding grooves are formed on both sides of the strip-shaped grooves. Inclined surface push blocks are slidably connected inside the strip-shaped grooves. Limit side blocks are fixedly connected to both sides of the inclined surface push blocks, and the limit side blocks are slidably connected to the side sliding grooves. A first pulling spring is installed between the end of the inclined surface push block far from the inclined surface and the end of the strip-shaped groove close to the output shaft. An inner sliding cavity is formed at the end of the sleeve block far from the output shaft where the strip-shaped groove is located. Side sliders are slidably connected to both sides of the inner sliding cavity. A locking pin is fixedly connected between the two side sliders, and the locking pin is slidably connected to the sleeve block. A roller is installed at one end of the locking pin close to the inclined surface push block. Second springs for cooperating with the side sliders are installed on both sides of the inner sliding cavity.

[0017] As a further solution of the present invention: a controller is installed on the transmission case.

[0018] As a further solution of the present invention: one end of the cylindrical shell away from the transmission case is fixedly connected with a mounting disc, and a plurality of mounting holes are formed in the mounting disc.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Through the switching mechanism provided by the present invention, the forward and reverse rotation of the output shaft can be realized without changing the rotation direction of the hollow end shaft, so that repeated start-stop operations are not required during work, avoiding the problem of overheating of the stator winding caused by repeated start-stop. At the same time, combined with the internal and external heat dissipation of the motor, the situation of motor overheating can be effectively avoided. The shock-proof mechanism provided can gradually combine the main shaft and the output shaft for transmission during work, and the transmission components do not directly contact in the initial stage of the initial transmission, which can effectively avoid the main shaft from bearing a large reaction force during the forward and reverse rotation switching, effectively reducing the driving burden and avoiding the occurrence of overload, thereby effectively improving the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention.

[0022] Figure 2 It is a schematic structural diagram of the other side of the present invention.

[0023] Figure 3 It is a schematic sectional view structure of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the bevel gear in the present invention.

[0025] Figure 5 It is a schematic structural diagram of the transmission component in the present invention.

[0026] Figure 6 It is a schematic structural diagram of the blades inside the hollow shaft in the present invention.

[0027] Figure 7 It is a schematic structural diagram of the switching cylinder in the present invention.

[0028] Figure 8 It is a schematic sectional view structure of the sleeve block in the present invention.

[0029] Figure 9 It is a schematic sectional view structure of the inner rotating block in the present invention.

[0030] Figure 10 It is a schematic external structure diagram of the inner rotating block in the present invention.

[0031] Figure 11 This is a schematic diagram of the external structure of the sleeve block in the present invention.

[0032] Figure 12 For the present invention Figure 8 An enlarged schematic diagram of part A.

[0033] Wherein: 1, transmission box; 2, controller; 3, exhaust hole; 4, main housing; 5, protective mesh cover; 6, heat dissipation fins; 7, mounting plate; 8, output shaft; 9, cylindrical shell; 10, rotor assembly; 11, stator winding; 12, outer blade; 13, hollow shaft; 14, shaft air hole; 15, partition; 16, first bevel gear; 17, main shaft; 18, inner support plate; 19, dialing frame; 20, iron block; 21, fixed seat; 22, electromagnet; 23, bearing seat; 24, sleeve block; 25, inner rotating block; 26, second bevel gear; 27, hollow end shaft; 28, first jaw head; 29, rotating cylinder; 30, inner shaft blade; 31, sliding groove; 32, second jaw head; 33, limit retaining ring; 34, first magnet block; 35, switching cylinder; 36, sliding rod; 37, inner convex slider; 38, first spring; 39, inner circular groove; 40, locking pin; 41, strip groove; 43, inclined surface push block; 44, first tension spring; 45, tension spring groove; 46, T-shaped limit block; 47, limit groove; 48, second magnet block; 49, second tension spring; 50, locking hole; 51, side sliding groove; 52, limit side block; 53, second spring; 54, inner sliding cavity; 55, side slider; 56, roller. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 - 12 , in the embodiment of the present invention, a high-power food blender motor structure includes a transmission box 1, one side of the transmission box 1 is fixedly connected with a cylindrical shell 9, one end of the cylindrical shell 9 away from the transmission box 1 is fixedly connected with a mounting plate 7, and a plurality of mounting holes are provided on the mounting plate 7; through the provided mounting plate 7 and the mounting holes on the mounting plate 7, it is convenient to install and use.

[0036] A main housing 4 is fixedly connected to the upper end of the transmission case 1. Both the cylindrical housing 9 and the main housing 4 communicate with the transmission case 1. Two partition plates 15 are fixedly connected to the lower end of the main housing 4. A hollow shaft 13 is rotatably connected to the upper end of the main housing 4. A hollow end shaft 27 is fixedly connected to the lower end of the hollow shaft 13, and the hollow end shaft 27 is rotatably connected to the partition plate 15. A rotor assembly 10 is installed on the hollow shaft 13. A stator winding 11 matching the rotor assembly 10 is provided on the inner wall of the main housing 4. A heat dissipation mechanism is provided on the main housing 4. A controller 2 is installed on the transmission case 1. During operation, the stator winding 11 is energized to generate a corresponding magnetic field, and then the rotation of the hollow end shaft 27 can be realized in cooperation with the rotor assembly 10. The provided heat dissipation assembly can dissipate heat from the inside of the hollow shaft 13 and the main housing 4 during operation, avoiding overheating inside the main housing 4.

[0037] The heat dissipation mechanism includes a plurality of heat dissipation fins 6. The plurality of heat dissipation fins 6 are evenly distributed and fixedly connected to the outer surface of the main housing 4. A protective mesh cover 5 is installed between the upper ends of the heat dissipation fins 6. An outer blade 12 is fixedly connected to the position where the upper end of the hollow shaft 13 passes through the main housing 4. An inner ventilation assembly for ventilating the inside of the hollow shaft 13 is further provided inside the main housing 4. The inner ventilation assembly includes an inner shaft blade 30. The inner shaft blade 30 is installed at the upper end inside the hollow shaft 13. A plurality of shaft air holes 14 are provided at the position where the hollow end shaft 27 is located between the two partition plates 15. A plurality of exhaust holes 3 communicating with the cavity formed by the two partition plates 15 are opened at the lower end of the main housing 4. During operation, when the hollow end shaft 27 rotates, it will drive the outer blade 12 to rotate. The rotation of the outer blade 12 drives the air around the main housing 4 and the heat dissipation fins 6 to flow, thereby realizing the heat dissipation of the main housing 4. At the same time, the rotation of the hollow shaft 13 can also drive the inner shaft blade 30 to rotate. The rotation of the inner shaft blade 30 introduces air into the hollow shaft 13 and then discharges it from the shaft air holes 14. The discharged air enters the cavity formed by the two partition plates 15 and then is discharged from the exhaust holes 3, thereby realizing the circulation of air inside the main housing 4. Through the air circulation inside and outside the main housing 4, the heat generated during the working process can be effectively dissipated, avoiding overheating problems of the motor.

[0038] On the middle of the side of the transmission case 1 away from the cylindrical shell 9, a main shaft 17 is rotatably connected. On the side of the transmission case 1 close to the cylindrical shell 9, a bearing seat 23 is fixedly connected. The main shaft 17 is rotatably connected to the bearing seat 23. Inside the transmission case 1, a reversing mechanism is provided which cooperates with the hollow end shaft 27 to drive the main shaft 17 to rotate forward and backward. The reversing mechanism includes a first bevel gear 16 which is installed at the lower end of the hollow end shaft 27. On both sides inside the transmission case 1, inner support plates 18 are fixedly connected. On each inner support plate 18, a rotating cylinder 29 is rotatably connected. The rotating cylinder 29 is concentric with the main shaft 17. On both rotating cylinders 29, a second bevel gear 26 is installed. The two second bevel gears 26 are respectively meshed with both sides of the first bevel gear 16. On the opposite ends of the two rotating cylinders 29, a first jaw head 28 is provided. The first jaw heads 28 on the two rotating cylinders 29 are arranged in opposite directions. On the main shaft 17, a transmission component is provided which is used to cooperate with the first jaw head 28 to drive the main shaft 17 to rotate. During operation, the hollow end shaft 27 can drive the first bevel gear 16 to rotate. The rotation of the first bevel gear 16 can drive the two second bevel gears 26 to rotate. Since the two second bevel gears 26 are respectively meshed with both sides of the first bevel gear 16, the rotation directions of the two second bevel gears 26 are opposite. Then, through the transmission component provided, it can cooperate with the first jaw heads 28 on the two second bevel gears 26 respectively, and thus the switching of the rotation direction of the main shaft 17 can be realized.

[0039] The transmission assembly includes a switching cylinder 35 which is slidably connected to the position of the main shaft 17 between two rotating cylinders 29. Second dog clutches 32 that cooperate with the first dog clutches 28 are provided at both ends of the switching cylinder 35. A plurality of sliding grooves 31 are formed in the surface of the main shaft 17 near the middle. A plurality of inner convex sliders 37 that match the sliding grooves 31 are fixedly connected to the inner wall of the switching cylinder 35. An action assembly for driving the switching cylinder 35 to move and engage with the first dog clutch 28 is provided at the lower end inside the transmission case 1. The action assembly includes fixed seats 21 which are respectively fixedly connected to both sides of the lower end surface inside the transmission case 1. Electromagnets 22 are installed in the fixed seats 21. A sliding rod 36 is fixedly connected between the upper ends of the fixed seats 21. An iron block 20 is slidably connected to the sliding rod 36. The upper end of the iron block 20 is fixedly connected to a dialing frame 19 which is rotatably connected to the switching cylinder 35. Limit retaining rings 33 are fixedly connected to both sides of the switching cylinder 35 where the dialing frame 19 is located. First springs 38 are sleeved on the sliding rod 36 at the positions between the iron block 20 and the fixed seats 21. During operation, the second dog clutch 32 on the switching cylinder 35 cooperates with the first dog clutch 28 on one side, thereby achieving power connection and transmitting the rotational power of the second bevel gear 26 to the main shaft 17. When the steering needs to be switched, the corresponding electromagnet 22 can be activated to drive the iron block 20 to move, pushing the corresponding second dog clutch 32 to engage with the corresponding first dog clutch 28, so that the main shaft 17 can be power-connected to the second bevel gear 26 on the other side to achieve the steering switch of the main shaft 17.

[0040] On the middle of the side of the cylindrical shell 9 away from the transmission box 1, an output shaft 8 is rotatably connected. Inside the cylindrical shell 9, an anti-impact mechanism is provided to prevent the main shaft 17 from being impacted during forward and reverse rotation. The anti-impact mechanism includes an inner rotating block 25. The inner rotating block 25 is fixedly connected to one end of the main shaft 17 close to the cylindrical shell 9. A plurality of limiting grooves 47 are formed on the surface of the inner rotating block 25. The limiting grooves 47 are evenly distributed in a circular shape. A T-shaped limiting block 46 is slidably connected inside the limiting groove 47. One end of the T-shaped limiting block 46 passing through the limiting groove 47 is provided with a second magnet block 48. The magnetic poles of two adjacent second magnet blocks 48 are arranged in opposite directions. A tension spring groove 45 is formed on one side of the limiting groove 47 close to the main shaft 17. A second tension spring 49 is installed between the inner end face of the tension spring groove 45 and the T-shaped limiting block 46. A plurality of evenly distributed locking holes 50 are formed on the end face of the inner rotating block 25 away from the transmission box 1. One end of the output shaft 8 close to the transmission box 1 is fixedly connected with a sleeve block 24. An inner circular groove 39 is formed at one end of the sleeve block 24 close to the transmission box 1. The inner rotating block 25 is arranged inside the inner circular groove 39. A first magnet block 34 matched with the second magnet block 48 is embedded on the inner wall of the inner circular groove 39. A coupling assembly is provided on the sleeve block 24 to cooperate with the locking holes 50 to link the output shaft 8 and the main shaft 17. During operation, the main shaft 17 drives the inner rotating block 25 to rotate. When the inner rotating block 25 rotates, it will drive the T-shaped limiting block 46 to rotate together. The T-shaped limiting block 46 moves outward from the limiting groove 47 under the centrifugal force during the rotation of the inner rotating block 25 and gradually approaches the first magnet block 34. At the same time, the sleeve block 24 will rotate under the magnetic force of the second magnet block 48 and the first magnet block 34. Since there is a gap between the second magnet block 48 and the first magnet block 34 and they do not directly contact, when the inner rotating block 25 operates, it is not directly connected to the inner circular groove 39. Therefore, the problem that the rotation resistance of the main shaft 17 is too large caused by the reaction force generated when the stirring shaft connected to the output shaft 8 rotates in reverse can be effectively avoided.

[0041] The combination component includes a plurality of strip-shaped grooves 41, and the plurality of strip-shaped grooves 41 are respectively formed on the surface of the sleeve block 24 away from the transmission box 1. Side sliding grooves 51 are formed on both sides of the strip-shaped groove 41. In each strip-shaped groove 41, there is a sliding connection with an inclined surface push block 43. On both sides of the inclined surface push block 43, there are fixed connection with limit side blocks 52, and the limit side blocks 52 are slidably connected with the side sliding grooves 51. Between the end of the inclined surface push block 43 away from the inclined surface and the end of the strip-shaped groove 41 close to the output shaft 8, there is a first tension spring 44 installed. The sleeve block 24 is provided with an inner sliding cavity 54 at the end of the strip-shaped groove 41 away from the output shaft 8. On both sides of the inner sliding cavity 54, there is a sliding connection with side sliders 55. Between the two side sliders 55, there is a fixed connection with a locking pin 40, and the locking pin 40 is slidably connected with the sleeve block 24. At the end of the locking pin 40 close to the inclined surface push block 43, there is a roller 56 installed. On both sides of the inner sliding cavity 54, there are installed second springs 53 that cooperate with the side sliders 55; during operation, when the sleeve block 24 is driven to rotate, the rotation of the sleeve block 24 causes the inclined surface push block 43 to generate a centrifugal force. Under the action of the centrifugal force, the inclined surface push block 43 pushes the locking pin 40 to move towards the inner rotating block 25. At the same time, the faster the rotation speed of the sleeve block 24, the greater the centrifugal force generated by the inclined surface push block 43. When the rotation speed of the sleeve block 24 approaches that of the inner rotating block 25, the locking pin 40 is fully extended and snapped into the locking hole 50 on the inner rotating block 25 to achieve the complete connection between the inner rotating block 25 and the sleeve block 24, ensuring the stability during the transmission process.

[0042] The working principle of the present invention is as follows: During operation, the stator winding 11 is energized to generate a corresponding magnetic field, which in turn cooperates with the rotor assembly 10 to drive the rotation of the hollow end shaft 27. The hollow end shaft 27 can drive the first bevel gear 16 to rotate. The rotation of the first bevel gear 16 can drive the rotation of two second bevel gears 26. Since the two second bevel gears 26 are respectively engaged with both sides of the first bevel gear 16, the rotation directions of the two second bevel gears 26 are opposite. When neither of the two electromagnets 22 is energized, the switching cylinder 35 is in the middle position under the action of the first spring 38 and is not in contact with the first dog clutches 28 on both sides. At this time, the main shaft 17 will not rotate. When the main shaft 17 needs to rotate, control one side of the electromagnet 22 to be energized. The energization of the electromagnet 22 can cause the iron block 20 to move correspondingly, and then the second dog clutch 32 on the switching cylinder 35 can be combined with the first dog clutch 28 on one side of the rotating cylinder 29, thereby realizing power transmission and causing the main shaft 17 to rotate. When the rotation direction needs to be switched, one side of the electromagnet 22 is de-energized, and then the other side of the electromagnet 22 is energized, so that the second dog clutch 32 on the other side of the switching cylinder 35 can be combined with the first dog clutch 28 on the other side, realizing the rotation direction switching. During rotation, the main shaft 17 drives the inner rotating block 25 to rotate. When the inner rotating block 25 rotates, it will drive the T-shaped limiting block 46 to rotate together. The T-shaped limiting block 46 moves outward from the limiting groove 47 under the centrifugal force of the rotation of the inner rotating block 25 and gradually approaches the first magnet block 34. At the same time, the sleeve block 24 will rotate under the magnetic force of the second magnet block 48 and the first magnet block 34. Since there is a gap between the second magnet block 48 and the first magnet block 34 and they do not directly contact, when the inner rotating block 25 operates, it is not directly connected to the inner circular groove 39. Therefore, it can effectively avoid the problem that the reverse force generated by the stirring shaft connected to the output shaft 8 during reverse rotation causes excessive rotational resistance of the main shaft 17, and effectively avoid the short-term overload situation when the motor switches between forward and reverse rotations. When the sleeve block 24 is driven to rotate, the rotation of the sleeve block 24 causes the inclined plane push block 43 to generate centrifugal force. The inclined plane push block 43 pushes the locking pin 40 to move inward to the inner rotating block 25 under the action of centrifugal force. At the same time, the faster the rotation speed of the sleeve block 24, the greater the centrifugal force generated by the inclined plane push block 43. When the rotation speed of the sleeve block 24 approaches that of the inner rotating block 25, the locking pin 40 is fully extended and snapped into the locking hole 50 on the inner rotating block 25 to realize the complete connection between the inner rotating block 25 and the sleeve block 24, ensuring the stability during the transmission process. When the rotation direction is switched, since the main shaft 17 will temporarily lose power, the speeds of the sleeve block 24 and the inner rotating block 25 will slow down and stop. During this process, the locking pin 40 will reset under the action of the second spring 53, and at the same time, the second magnet block 48 will reset away from the first magnet block 34 under the action of the second tension spring 49, thereby enabling the complete separation of the inner rotating block 25 and the sleeve block 24. This not only prevents excessive reverse torque during driving but also acts as a clutch, ensuring the smooth progress of the forward and reverse switching.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Although this specification is described in terms of embodiments, not every embodiment contains only one technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-power food blender motor structure, including a transmission box (1), characterized in that: On one side of the transmission case (1), a cylindrical shell (9) is fixedly connected. On the upper end of the transmission case (1), a main housing (4) is fixedly connected. Both the cylindrical shell (9) and the main housing (4) are in communication with the transmission case (1). A hollow shaft (13) is rotatably connected to the upper end of the main housing (4). A hollow end shaft (27) is fixedly connected to the lower end of the hollow shaft (13). A rotor assembly (10) is installed on the hollow shaft (13). A stator winding (11) that mates with the rotor assembly (10) is provided on the inner wall of the main housing (4). In the middle of the side of the transmission case (1) away from the cylindrical shell (9), a main shaft (17) is rotatably connected. A reversing mechanism that cooperates with the hollow end shaft (27) to drive the main shaft (17) to rotate forward and backward is provided inside the transmission case (1). In the middle of the side of the cylindrical shell (9) away from the transmission case (1), an output shaft (8) is rotatably connected. An anti-impact mechanism for preventing the main shaft (17) from being impacted during forward and reverse rotation is provided inside the cylindrical shell (9). The reversing mechanism includes a first bevel gear (16). The first bevel gear (16) is installed at the lower end of the hollow end shaft (27). Inner support plates (18) are fixedly connected to both sides inside the transmission case (1). A rotating cylinder (29) is rotatably connected to each of the inner support plates (18). The rotating cylinder (29) is concentric with the main shaft (17). A second bevel gear (26) is installed on each of the two rotating cylinders (29). The two second bevel gears (26) are respectively meshed with both sides of the first bevel gear (16). A first jaw head (28) is provided at each of the opposite ends of the two rotating cylinders (29). The first jaw heads (28) on the two rotating cylinders (29) are arranged in opposite directions. The anti-impact mechanism includes an inner rotating block (25). The inner rotating block (25) is fixedly connected to one end of the main shaft (17) close to the cylindrical shell (9). A number of limiting grooves (47) are formed on the surface of the inner rotating block (25). The limiting grooves (47) are evenly distributed in a ring shape. A T-shaped limiting block (46) is slidably connected inside the limiting groove (47). A second magnet block (48) is installed at the end of the T-shaped limiting block (46) that penetrates out of the limiting groove (47). The magnetic poles of adjacent two second magnet blocks (48) are arranged in opposite directions. A tension spring groove (45) is formed on one side of the limiting groove (47) close to the main shaft (17). A second tension spring (49) is installed between the inner end face of the tension spring groove (45) and the T-shaped limiting block (46). A sleeve block (24) is fixedly connected to one end of the output shaft (8) close to the transmission case (1). An inner circular groove (39) is formed at one end of the sleeve block (24) close to the transmission case (1). The inner rotating block (25) is arranged inside the inner circular groove (39). A first magnet block (34) that mates with the second magnet block (48) is embedded on the inner wall of the inner circular groove (39).

2. A high-power food blender motor structure according to claim 1, characterized in that, On one side inside the transmission case (1) near the cylindrical shell (9), there is a bearing seat (23) fixedly connected. The main shaft (17) is rotatably connected to the bearing seat (23). At the lower end of the main housing (4), there are two partition plates (15) fixedly connected. The hollow end shaft (27) is rotatably connected to the partition plates (15). On the main housing (4), there is a heat dissipation mechanism, which includes a number of heat dissipation fins (6). The number of heat dissipation fins (6) are evenly distributed and fixedly connected to the outer surface of the main housing (4). A protective net cover (5) is installed between the upper ends of the heat dissipation fins (6). At the position where the upper end of the hollow shaft (13) passes through the main housing (4), there is an outer blade (12) fixedly connected. Inside the main housing (4), there is also an internal ventilation component for ventilating the inside of the hollow shaft (13).

3. A high-power food blender motor structure according to claim 2, characterized in that, The internal ventilation component includes an internal shaft blade (30). The internal shaft blade (30) is installed at the upper end inside the hollow shaft (13). At the position where the hollow end shaft (27) is between the two partition plates (15), there are a number of shaft air holes (14). At the lower end of the main housing (4), there are a number of exhaust holes (3) that communicate with the cavity formed by the two partition plates (15).

4. A high-power food blender motor structure according to claim 1, characterized in that, On the main shaft (17), there is a transmission component for cooperating with the first jaw head (28) to drive the main shaft (17) to rotate. The transmission component includes a switching cylinder (35). The switching cylinder (35) is slidably connected to the position of the main shaft (17) between the two rotating cylinders (29). At both ends of the switching cylinder (35), there are second jaw heads (32) that cooperate with the first jaw head (28). At the position near the middle of the surface of the main shaft (17), there are a number of sliding grooves (31). Inside the inner wall of the switching cylinder (35), there are a number of inner convex sliders (37) that match the sliding grooves (31). Inside the lower end of the transmission case (1), there is an action component for driving the switching cylinder (35) to move and engage with the first jaw head (28).

5. A high-power food blender motor structure according to claim 4, characterized in that, The action component includes a fixed seat (21). The fixed seats (21) are respectively fixedly connected to the positions on both sides of the lower end surface inside the transmission case (1). Inside each fixed seat (21), there is an electromagnet (22) installed. Between the upper ends of the fixed seats (21), there is a sliding rod (36) fixedly connected. A iron block (20) is slidably connected to the sliding rod (36). The upper end of the iron block (20) is fixedly connected to a dialing frame (19). The dialing frame (19) is rotatably connected to the switching cylinder (35). At the positions on both sides of the switching cylinder (35) where the dialing frame (19) is located, there are limit retaining rings (33) fixedly connected. Between the iron block (20) and the fixed seat (21) on the sliding rod (36), there are first springs (38) penetrated through.

6. A high-power food blender motor structure according to claim 1, characterized in that, On one end face of the inner rotating block (25) far from the transmission case (1), a number of uniformly distributed locking holes (50) are provided. On the sleeve block (24), there is a coupling assembly that cooperates with the locking holes (50) to link the output shaft (8) and the main shaft (17). The coupling assembly includes a number of strip-shaped grooves (41). The number of strip-shaped grooves (41) are respectively opened on one side of the sleeve block (24) far from the transmission case (1). Side sliding grooves (51) are opened on both sides of the strip-shaped groove (41). In each strip-shaped groove (41), an inclined surface push block (43) is slidably connected. On both sides of the inclined surface push block (43), a limiting side block (52) is fixedly connected. The limiting side block (52) is slidably connected with the side sliding groove (51). Between one end of the inclined surface push block (43) far from the inclined surface and one end of the strip-shaped groove (41) close to the output shaft (8), a first tension spring (44) is installed. The sleeve block (24) is provided with an inner sliding cavity (54) at one end far from the output shaft (8). On both sides of the inner sliding cavity (54), a side sliding block (55) is slidably connected. A locking pin (40) is fixedly connected between the two side sliding blocks (55). The locking pin (40) is slidably connected with the sleeve block (24). A roller (56) is installed at one end of the locking pin (40) close to the inclined surface push block (43). On both sides of the inner sliding cavity (54), a second spring (53) that cooperates with the side sliding block (55) is installed.

7. A high-power food blender motor structure according to claim 1, characterized in that, A controller (2) is installed on the transmission case (1).

8. A high-power food blender motor structure according to claim 1, characterized in that, One end of the cylindrical shell (9) far from the transmission case (1) is fixedly connected with a mounting disc (7). A number of mounting holes are opened on the mounting disc (7).

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