A stable transmission mechanism for a food processor

Abstract

The application relates to the technical field of kitchen appliances, in particular to a stable chef machine transmission mechanism, which comprises a driving assembly and a transmission assembly, the driving assembly comprises a motor and a worm coaxially arranged with an output shaft of the motor, the transmission assembly comprises a transmission frame, a first gear set and a second gear set, the first gear set is fixed in the transmission frame and is in transmission connection with the worm, the first gear set is in transmission connection with the second gear set through a sun shaft, the motor drives the first gear set to reduce speed and increase torque through the worm, the torque is transmitted to the second gear set through the sun shaft for secondary speed reduction, and finally high torque is stably output, the double-gear set speed reduction structure reduces friction loss and temperature rise risk through optimization of stress distribution, the transmission stability is improved, the equipment maintenance cycle is prolonged, and the application has the characteristics of stable operation.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to a stable transmission mechanism for a food processor. Background Technology

[0002] As a common appliance in modern kitchens, stand mixers are mainly used for baking and pastry making. They can quickly and efficiently complete operations such as kneading, whipping, and mixing, greatly improving kitchen efficiency.

[0003] In related technologies, most mainstream food processors on the market currently use a motor-belt transmission method to drive the mixing shaft to rotate. This method is simple in structure and low in cost, but it generates a lot of noise when running. The belt occupies a lot of space inside the machine, making it difficult to reduce the size of the whole machine. Moreover, after long-term use, it will experience aging, loosening, slipping, or even breakage.

[0004] Existing food processor transmission mechanisms have the following drawbacks: high noise, easy wear and tear, and large space occupation. As users' requirements for the performance of kitchen appliances increase, especially the demand for noise control, space utilization and durability, the limitations of traditional transmission mechanisms are gradually becoming apparent. Utility Model Content

[0005] To achieve stable operation, this application provides a stable transmission mechanism for a food processor.

[0006] The stable transmission mechanism for a food processor provided in this application adopts the following technical solution: A stable transmission mechanism for a food processor includes a drive assembly and a transmission assembly. The drive assembly includes a motor and a worm gear coaxially arranged with the output shaft of the motor. The transmission assembly includes a transmission frame, a first gear set, and a second gear set. The first gear set is fixed inside the transmission frame and is driven by the worm gear. The first gear set is driven by the second gear set through a sun shaft.

[0007] By adopting the above scheme, the motor drives the first gear set to reduce speed and increase torque through the worm gear, and then transmits it to the second gear set for secondary reduction through the sun shaft, finally outputting high torque in a stable manner. The meshing structure of the dual gear set optimizes the force distribution, reduces wear and heat generation, and effectively improves transmission stability and equipment maintenance cycle.

[0008] Preferably, the first gear set includes two double gears horizontally symmetrically arranged on both sides of the worm, and a worm wheel engaged with the end of the sun shaft near the first gear set. The lower gear teeth of the double gears mesh with the worm, and the upper gear teeth of the double gears mesh with the worm wheel.

[0009] By adopting the above scheme, the double gear transmits power to the sun shaft through two-stage meshing of the upper and lower gear teeth, achieving speed reduction and torque increase. The symmetrical layout effectively distributes the load, reduces vibration and wear, and ensures smooth and reliable transmission.

[0010] Preferably, the type of motor is a servo motor, and the motor transmits the output torque to the double gear and the worm wheel through the worm gear, thereby driving the sun shaft to rotate.

[0011] By adopting the above scheme, the servo motor outputs precisely controlled torque. Through the mechanical cooperation of the worm gear and the double gear, it drives the worm wheel and the sun shaft to achieve a high-precision, low-vibration speed reduction and torque increase effect, thereby improving transmission efficiency and reliability.

[0012] Preferably, the second gear set includes a sun gear, a ring gear, and two planet gears. The sun gear is locked to the other end of the sun shaft. The sun gear meshes with the two planet gears, and the two planet gears mesh with the ring gear.

[0013] By adopting the above scheme, the sun gear, as the input component, drives the two planetary gears to rotate on their own axis. The planetary gears revolve around the sun gear, driving the planet carrier to output high torque and low speed rotation, thereby achieving secondary speed reduction and torque increase, and further improving transmission smoothness and load capacity.

[0014] Preferably, the assembly further includes a stirring component, which includes a stirring blade and two stirring shafts. One end of each of the two stirring shafts is respectively engaged with one of the two planetary gear shaft holes. The stirring blade is detachably connected to the other end of one of the stirring shafts by a fastener.

[0015] By adopting the above scheme, the planetary gear drives the stirring blades at the end of the stirring shaft to move in a circular motion around the center through its rotation and revolution, thereby achieving a compound stirring effect and effectively improving the uniformity of mixing.

[0016] Preferably, the second gear set further includes a planetary carrier and a planetary constellation, the sun shaft and the two stirring shafts are fixed on the planetary carrier, and the planetary constellation is covered outside the planetary carrier.

[0017] By adopting the above scheme, when the sun axis is driven, the stirring shaft revolves and rotates under the drive of the planetary carrier and planetary gears, respectively, to achieve compound stirring and improve the cutting and mixing effect. The planetary constellation plays the role of external support and sealing.

[0018] Preferably, a first bearing is provided on the sun axis, and the planetary carrier has bearing holes corresponding to the two stirring shafts. Two second bearings are provided in the bearing holes, and the two stirring shafts pass through the two second bearings to connect with the planetary gear.

[0019] By adopting the above solution, the dual-bearing design reduces energy loss caused by vibration offset and friction, ensuring operational accuracy and mechanical conversion efficiency.

[0020] Preferably, a buffer spring is provided on the axial surface of the stirring shaft between the planetary carrier and the stirring blade.

[0021] By adopting the above solution, the elastic deformation of the buffer spring is used to absorb the impact energy during stirring by the stirring blades, thereby reducing equipment wear and extending the service life of components.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The motor drives the first gear set to reduce speed and increase torque through a worm gear, and then transmits it to the second gear set for secondary reduction through the sun shaft. Finally, it outputs high torque to drive the stirring shaft to run smoothly. The meshing design of the dual gear sets optimizes the force distribution, reduces wear and heat generation, and effectively improves transmission stability and equipment maintenance cycle. 2. Improved the transmission efficiency and reliability of the device; 3. Improved the cutting effect and mixing uniformity of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating a usage scenario of an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the cooperation relationship between the first gear set and the drive assembly in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram showing the cooperation relationship between the second gear set and the stirring assembly in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Drive assembly; 11. Motor; 12. Worm gear; 2. Transmission assembly; 21. Transmission frame; 22. First gear set; 221. Worm gear; 222. Double gear; 23. Sun shaft; 231. First bearing; 24. Second gear set; 241. Sun gear; 242. Planetary gear; 243. Ring gear; 244. Planetary gear set; 245. Planet carrier; 2461. Bearing hole; 2462. Second bearing; 3. Stirring assembly; 31. Stirring shaft; 32. Buffer spring; 33. Stirring blades. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a stable transmission mechanism for a food processor. (Refer to...) Figure 1-2 A stable transmission mechanism for a food processor includes a drive assembly 1 and a transmission assembly 2. The drive assembly 1 includes a motor 11 and a worm gear 12 coaxially arranged with the output shaft of the motor 11. The transmission assembly 2 includes a transmission frame 21, a first gear set 22 and a second gear set 24. The first gear set 22 is fixed inside the transmission frame 21 and is connected to the worm gear 12. The first gear set 22 is connected to the second gear set 24 via a sun shaft 23.

[0030] Correspondingly, the motor 11 drives the worm gear 12 to rotate. The worm gear 12 meshes with the first gear set 22 to complete the first deceleration and torque amplification, sharing the load of the motor 11. The decelerated power is transmitted to the second gear set 24 via the sun shaft 23 for secondary deceleration and stable output of higher torque. The dual gear meshing structure reduces friction loss and heat generation by optimizing stress distribution, effectively enhancing transmission stability and extending the equipment maintenance cycle.

[0031] Specifically, refer to Figure 3 The first gear set 22 includes two double gears 222 horizontally and symmetrically mounted on both sides of the worm 12, and a worm wheel 221 snapped into the end of the sun shaft 23 near the first gear set 22. The lower gear teeth of the double gears 222 mesh with the worm 12, and the upper gear teeth of the double gears 222 mesh with the worm wheel 221.

[0032] Therefore, the motor 11 drives the worm 12 to rotate, and the worm 12 rotates by meshing with the lower gear of the double gear 222. Subsequently, the upper gear of the double gear 222 meshes with the worm wheel 221, thereby transmitting power to the sun shaft 23, achieving initial deceleration and increasing torque. The symmetrically arranged double gear 222 optimizes the load distribution, reduces the vibration and uneven wear of the worm 12, and effectively improves the smoothness of transmission and the reliability of the structure.

[0033] In the process described above, motor 11 is set as a servo motor. Servo motors have micron-level position control precision and can correct errors in real time through a closed-loop feedback system, reducing the risk of step loss. Their small size and high power make them suitable for installation in compact spaces such as health pots.

[0034] Furthermore, after the servo motor outputs precisely controlled torque, the mechanical cooperation between the worm gear 12 and the double gear 222 drives the worm wheel 221 and the sun shaft 23 to achieve a high-precision, low-vibration speed reduction and torque increase effect, thereby improving transmission efficiency and reliability.

[0035] On the other hand, refer to Figure 4The second gear set 24 includes a sun gear 241, a ring gear 243 and two planet gears 242. The sun gear 241 is locked to the other end of the sun shaft 23 and meshes with the two planet gears 242. The two planet gears 242 mesh with the ring gear 243.

[0036] Therefore, the sun gear 241 receives the decelerated power from the first gear set 22 through the sun shaft 23 and rotates, thereby driving the two planet gears 242 to rotate. The rotation of the planet gears 242 drives the ring gear 243 to move through the meshing point, and generates revolution motion by rolling along the gear ring during the rotation, thereby driving the ring gear 243 to rotate and output, completing the secondary deceleration and output torque amplification, and improving the energy transfer efficiency.

[0037] Furthermore, the torque transmission path is optimized through the meshing system of sun gear 241-planet gear 242-ring gear 243, effectively sharing the meshing stress and reducing single-point wear. The combined motion of the planet gear 242's revolution and rotation is evenly distributed to the radial load through the planet carrier 245, reducing vibration transmission, lowering the impact force generated by torque fluctuations, and improving structural rigidity.

[0038] Furthermore, the system's compact design is also suitable for narrow installation spaces such as health pots. Under variable load conditions, such as changes in the viscosity of the stirred material, the elastic meshing between the gears inside the system can buffer instantaneous impacts, reduce the occurrence of overload damage, and maintain operational stability.

[0039] In addition, it also includes a stirring assembly 3, which includes a stirring blade 33 and two stirring shafts 31. One end of the two stirring shafts 31 is respectively engaged with the shaft holes of two planetary gears 242, and the other end of the stirring shafts 31 is detachably connected to the stirring blade 33 by a locking screw.

[0040] Furthermore, the second gear set 24 also includes a planetary carrier 245 and a planetary constellation 244. The sun shaft 23 and two stirring shafts 31 are all fixed on the planetary carrier 245, and the planetary constellation 244 is covered outside the planetary carrier 245.

[0041] Therefore, the planetary carrier 245, as the core load-bearing structure, fixes the sun shaft 23 and the stirring shaft 31 into a whole, ensuring synchronous power transmission. The planetary constellation 244 covers the outside of the planetary carrier 245 and provides rigid support and protection for the internal gear meshing system through physical structural sealing. The rigid connection between the double planetary gears 242 and the planetary carrier 245 further reduces the vibration energy transmitted to the stirring shaft 31 and reduces the impact peak caused by sudden load changes.

[0042] Furthermore, in this embodiment, the planetary gear 242 revolves around the sun gear 241, driving the stirring shaft 31 to perform a compound motion. Combined with the spiral design of the stirring blades 33, a three-dimensional mixing trajectory is formed, which accelerates the diffusion and penetration of materials. The planetary carrier 245 and the planetary constellation 244 effectively reduce transmission noise and energy loss through matching mechanical structures. Finally, the output torque is amplified by two-stage reduction, enabling the stirring shaft 31 to output high torque at low speed, thereby achieving an efficient and stable material mixing process.

[0043] Meanwhile, a buffer spring 32 is installed on the axial surface of the stirring shaft 31 between the planetary carrier 245 and the stirring blade 33, which can absorb the impact energy generated by the stirring blade 33 during stirring by utilizing the elastic deformation of the buffer spring 32.

[0044] Correspondingly, when the stirring blade 33 encounters uneven materials or resistance, the spring compression converts the impact kinetic energy into elastic potential energy for storage, and then slowly releases the energy, reducing the upward transmission of vibration and ensuring a smooth and reliable stirring process. The buffer spring 32 also allows the stirring blade 33 to float slightly to adapt to changes in material viscosity, reduce equipment wear caused by hard impacts, extend the service life of components, and improve the uniformity of material mixing.

[0045] In the process described above, a first bearing 231 is fixed on the sun shaft 23, and a bearing hole 2461 is opened on the planetary carrier 245 corresponding to the two stirring shafts 31. Two second bearings 2462 are fixed in the bearing hole 2461. The two stirring shafts 31 pass through the two second bearings 2462 and are connected to the planetary gear 242. The first bearing 231 on the sun shaft 23 provides central support to ensure the stable rotation of the sun shaft 23. The planetary carrier 245 fixes the stirring shafts 31 through the second bearings 2462, so that the stirring shafts 31 maintain stable operation during revolution and rotation.

[0046] Therefore, when the sun shaft 23 inputs torque, the planetary carrier 245 drives the stirring shaft 31 to revolve around the center, forming a large-scale circumferential sweep. At the same time, the planetary gear 242 drives the stirring shaft 31 to rotate synchronously, realizing bidirectional cutting by the blades and uniform mixing of materials. The dual-bearing design effectively disperses the load, reduces energy loss caused by single-point vibration offset and friction, reduces the risk of material caking, and makes the overall structure highly efficient and reliable, ensuring the accuracy of the device's operation, mechanical conversion efficiency, and mixing quality.

[0047] The implementation principle of a stable transmission mechanism for a food processor according to this application embodiment is as follows: the servo motor 1111 completes the initial deceleration and torque amplification through the worm gear 12-worm wheel 221 transmission structure in the first gear set 22, and then transmits the power to the planetary gear 242 system in the second gear set 24 for secondary deceleration through the sun shaft 23. This dual gear set deceleration structure reduces friction loss and temperature rise risk by optimizing stress distribution, which not only improves transmission stability but also extends the equipment maintenance cycle.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stable transmission mechanism for a food processor, characterized in that, The device includes a drive assembly (1) and a transmission assembly (2). The drive assembly (1) includes a motor (11) and a worm gear (12) coaxially arranged with the output shaft of the motor (11). The transmission assembly (2) includes a transmission frame (21), a first gear set (22) and a second gear set (24). The first gear set (22) is fixed inside the transmission frame (21) and is connected to the worm gear (12) in a transmission connection. The first gear set (22) is connected to the second gear set (24) in a transmission connection via a sun shaft (23).

2. The stable transmission mechanism for a food processor according to claim 1, characterized in that, The first gear set (22) includes two double gears (222) arranged horizontally and symmetrically on both sides of the worm (12), and a worm wheel (221) engaged with the end of the sun shaft (23) near the first gear set (22). The lower gear teeth of the double gears (222) mesh with the worm (12), and the upper gear teeth of the double gears (222) mesh with the worm wheel (221).

3. The stable transmission mechanism for a food processor according to claim 2, characterized in that, The motor (11) is a servo motor. The motor transmits its output torque to the double gear (222) and the worm wheel (221) through the worm (12), thereby driving the sun shaft (23) to rotate.

4. The stable transmission mechanism for a food processor according to claim 3, characterized in that, The second gear set (24) includes a sun gear (241), a ring gear (243) and two planet gears (242). The sun gear (241) is fixed to the other end of the sun shaft (23). The sun gear (241) meshes with the two planet gears (242), and the two planet gears (242) mesh with the ring gear (243).

5. A stable transmission mechanism for a food processor according to claim 4, characterized in that, It also includes a stirring assembly (3), which includes a stirring blade (33) and two stirring shafts (31). One end of each of the two stirring shafts (31) is engaged with the shaft holes of the two planetary gears (242). The stirring blade (33) is detachably connected to the other end of one of the stirring shafts (31) by a fastener.

6. The stable transmission mechanism of a food processor according to claim 5, characterized in that, The second gear set (24) also includes a planet carrier (245) and a planetary constellation (244). The sun shaft (23) and the two stirring shafts (31) are fixed on the planet carrier (245), and the planetary constellation (244) covers the outside of the planet carrier (245).

7. A stable transmission mechanism for a food processor according to claim 6, characterized in that, The sun shaft (23) is provided with a first bearing (231), and the planetary carrier (245) is provided with bearing holes (2461) corresponding to the two stirring shafts (31). Two second bearings (2462) are provided in the bearing holes (2461), and the two stirring shafts (31) pass through the two second bearings (2462) to connect with the planetary gear (242).

8. A stable transmission mechanism for a food processor according to claim 6, characterized in that, A buffer spring (32) is provided on the axial surface of the stirring shaft (31) between the planetary carrier (245) and the stirring blade (33).

Images