Double-speed output reduction gearbox and multifunctional food processor

Abstract

The invention provides a double-speed output reduction gearbox and a multifunctional food processor, the reduction gearbox comprises a first speed reduction assembly and a second speed reduction assembly, the first speed reduction assembly comprises a first planet support and a first output shaft in transmission connection with the first planet support; the second speed reduction assembly comprises a second sun gear connected with the first planet support, a plurality of second planet gears meshed with the second sun gear in a transmission mode and a second planet support connected with the second planet gears in a transmission mode, the second planet support is connected with a second output shaft in a transmission mode, a step is arranged on the second planet support, and a bearing is arranged on the step. The bearing is sleeved with the first output shaft, and the step and the bearing are matched together to support the first output shaft in the axial direction and the radial direction. On the premise that the axial matching relation of the first output shaft and the first planetary support is guaranteed, miniaturization of the power assembly is achieved, multi-layer limiting of the first output shaft is achieved, positioning is reliable, and stable output of the rotating speed is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of food processing devices, and in particular to a dual-speed output reduction box and a multifunctional food processing machine.

[0002] This application is a divisional application with an application date of September 29, 2021, application number 202111147958.X, and invention name “A multifunctional food processor”. Background Art

[0003] Existing multifunctional food processors usually include a processing cup, multiple processing parts and a power assembly. The power assembly includes a motor and a first planetary gear set and a second planetary gear set. The two-stage gear sets are connected in transmission, and the first planetary bracket transmits power to the first output shaft, and the second planetary bracket transmits power to the second output shaft, so as to achieve multiple speed outputs. Users can replace different processing parts to achieve multiple functions such as mincing meat, chopping vegetables, and kneading noodles.

[0004] Generally, the outer dimensions of the power assembly are mainly controlled by the size of the motor and the gear set. The motor and the processing part are matched and finalized, and the size difference is small, while the gear set needs to be changed in one or two stages, and the size difference between the two is large. Moreover, in the existing power assembly, the first planetary support is connected to the first output shaft through the second sun gear, and is an integrated structure. This structure will cause the gear size of the first planetary gear set to affect the gear size of the second planetary gear set. Specifically, during installation, the diameter of the connection between the first output shaft and the second sun gear must be larger than the final output connector of the first stage, that is, the circumferential gap between the second planetary gears needs to be enlarged, otherwise it cannot be connected to achieve the transmission connection with the first gear set. This structure will directly lead to the second planetary gear set needing to adapt to a larger fixed gear ring to meet the secondary output, enlarging the gears of the entire power assembly, which is not conducive to user use and storage; and if the size of the power assembly is reduced in order to reduce the size of the secondary planetary gear, the first planetary gear set must be further reduced. On the one hand, it has little effect on the change of size, and on the other hand, it will cause the power transmission of the first output shaft to be unstable, and it is difficult to adapt to the existing processing parts, and the processing parts need to be further adjusted, and the scope of application is reduced. In addition, the axial positioning of the first output shaft of the current structure only relies on the first planetary bracket. The first output shaft has only one end fixed and the other end cantilevered, which causes shaking during operation, resulting in unstable speed output, transmission energy loss, high transmission noise and other problems. Summary of the invention

[0005] The purpose of the present application is to provide a multifunctional food processor to solve the problem that the sizes of gear sets in the existing multifunctional food processors affect each other and the positioning is unreliable.

[0006] To achieve the above object, the present application provides a multifunctional food processor, which includes a processing cup, a first processing member, a second processing member, and a power assembly. The power assembly includes a motor, a first reduction assembly driven by the motor, and a second reduction assembly. The first reduction assembly and the second reduction assembly drive the first processing member and the second processing member respectively. The first reduction assembly includes a first planetary carrier and a first output shaft that are separately connected. The second reduction assembly includes a second sun gear connected to the first planetary carrier, a plurality of second planetary gears meshing with the second sun gear, and a second planetary carrier. The circumferential gap formed by the plurality of second planetary gears is smaller than the maximum outer diameter of the first output shaft. The first output shaft is limitedly installed on the second planetary carrier to be connected to the first planetary carrier.

[0007] In the multifunctional food processor provided by the present application, the first reduction assembly includes a first planetary carrier and a first output shaft that are separately connected. The first output shaft is connected to the first planetary carrier in a disassembled manner. On the premise of ensuring the axial cooperation relationship between the first output shaft and the first planetary carrier, the size of the first output shaft and the size of the second planetary gear set can be made independent of each other and adjusted appropriately according to needs. When the second planetary gear set is not restricted by the size of the first output shaft, the circumferential gap formed by the plurality of second planetary gears is smaller than the maximum outer diameter of the first output shaft. On the one hand, it realizes the reduction of the overall size of the second reduction assembly, and adjusts the size of the overall power assembly on the premise that the size of the first output shaft is not affected, reducing the size of the power assembly and facilitating the user to use and store. On the other hand, the output end of the first output shaft can maintain the traditional size, so as to be adapted to the existing processing members, and there is no need to adjust the size of the processing members that are standard parts, and it can be directly adapted to more processing members currently. The first output shaft is independently arranged with the first planetary carrier in a disassembled manner. The first output shaft is limitedly installed on the second planetary carrier to be connected to the first planetary carrier, that is, the traditional installation method is changed to avoid the first output shaft being limited only by the first planetary carrier. During the assembly process, the first output shaft is first limited in the second planetary carrier, and then the second planetary carrier is matched with the first planetary carrier, so as to realize the connection between the first output shaft and the first planetary carrier. Therefore, after the assembly is completed, the first output shaft is connected and limited by the first planetary carrier and also limited and supported by the second planetary carrier. There are multiple layers of limitation, and the positioning is reliable, avoiding the situation of cantilever, thereby reducing the phenomenon of shaking of the first output shaft, maintaining the stable output of the first speed and the second speed, ensuring the transmission efficiency, and reducing the transmission noise.

[0008] In a preferred implementation manner of the multifunctional food processor, a limiting portion is convexly provided on the outer circumference of the first output shaft, and the outer diameter of the limiting portion constitutes the maximum outer diameter of the first output shaft. The limiting portion is axially limited between the second planetary carrier and the second planetary gears.

[0009] The first output shaft is provided with a limiting part to achieve limiting cooperation with the second planetary support. The outer diameter of the limiting part constitutes the maximum outer diameter of the first output shaft. During the assembly process, only the limiting part of the first output shaft needs to be aligned and installed, which is convenient for the cooperation between the first output shaft and the second planetary support and further avoids the overall size of the first output shaft and the size of the second planetary gear set from affecting each other. The outer diameter of the limiting part constitutes the maximum outer diameter of the first output shaft, and the axial limiting part is between the second planetary support and the second planetary gear. The limiting part is more reliable, and the axial positioning of the second planetary support on the first output shaft is strengthened.

[0010] In a preferred implementation of the multifunctional food processor, the second planetary bracket is provided with a step for mounting a bearing, the bearing is sleeved with the first output shaft to radially support the first output shaft, and the inner diameter of the bearing is smaller than the maximum outer diameter of the first output shaft.

[0011] The second planetary support is provided with a step and a bearing. The step determines the matching position of the second output shaft to achieve support positioning. It can pre-position the first output shaft during assembly, which is convenient for installation and alignment. A bearing is provided in the step, and the bearing radially supports the first output shaft to ensure the concentricity of the installation. The step and the bearing cooperate to achieve all-round support for the first output shaft in the axial and radial directions, avoiding the problem of large shaking at the output end of the first output shaft, and further achieving stable output of the first speed and the second speed. In addition, the bearing can be used as a wear-resistant part to avoid wear between the first output shaft and the second planetary support, ensuring the transmission efficiency and the stability of the speed, and improving the overall service life.

[0012] The step and the bearing of the second planetary support directly pre-position the limiting portion of the first output shaft, thereby ensuring the stability and reliability of the first output shaft after installation.

[0013] In a preferred implementation of the multifunctional food processor, there is a gap h1 between the inner side of the bearing and the first output shaft, and there is a gap h2 between the outer side of the bearing and the step, wherein 0.1≤h1≤0.3mm, and 0.3<h2≤0.7mm.

[0014] By setting the inner and outer clearances of the bearing, the bearing supports the first output shaft on the one hand, and prevents the first output shaft from being deformed too much, which may cause deformation and damage to the second planetary bracket or the second output shaft of the second planetary bracket.

[0015] In a preferred implementation of the multifunctional food processor, a first drive shaft for driving the second sun gear is connected between the first planetary carrier and the first output shaft.

[0016] The first drive shaft, as an intermediate connecting member, connects the first planetary carrier and the first output shaft. The first drive shaft can be separately manufactured into a metal part with high hardness and strength, and is injection-molded on the first planetary carrier to achieve a reliable connection between the first planetary carrier and the first output shaft, and at the same time achieve a reliable transmission with the second sun gear.

[0017] In a preferred implementation of the multifunctional food processor, the first drive shaft is integrally connected to the first planetary carrier, and the first drive shaft is provided with a plug-in portion for separately connecting to the first output shaft.

[0018] In a preferred implementation of the multifunctional food processor, the first drive shaft is integrally connected to the first planetary carrier, the second sun gear is integrally formed on the outer periphery of the first drive shaft, and the first output shaft is separately connected to the second sun gear.

[0019] In a preferred implementation of the multifunctional food processor, the first drive shaft is integrally connected to the first output shaft, and the first drive shaft is separately connected to the first planetary carrier.

[0020] The first output shaft is separately connected to the first planetary carrier, and the disassembly and assembly parts can be flexibly adjusted according to needs. For example, in the above three ways, directly connecting the first output shaft to the first drive shaft, connecting the first output shaft to the second sun gear, and connecting the first output shaft to the first planetary carrier through the first drive shaft (including connecting the first output shaft to the first planetary carrier through the second sun gear), etc., can all ensure that the size of the first output shaft and the size of the second planetary gear set are not affected by each other on the premise of ensuring the axial matching relationship between the first output shaft and the first planetary carrier, which is beneficial to reducing the size of the power assembly and facilitating storage. At the same time, the disassembly and assembly parts are flexibly adjusted according to the actual design and requirements, which is convenient for the overall installation of the power assembly.

[0021] In a preferred implementation of the multifunctional food processor, an internal coupling is integrally provided at the output end of the first output shaft;

[0022] The second planetary carrier is integrally formed or separately connected with a second output shaft. The second output shaft is connected to the second processing part, and the second output shaft is an external coupling.

[0023] The first output shaft is integrally provided with an internal coupling. The internal coupling can be directly connected to the first planetary carrier through the first output shaft and then be driven, and then transmit the power to the first processing part, which reduces the assembly steps compared with the separately connected method. The first output shaft is connected with an internal coupling instead of an external coupling, which can avoid interference with the second output shaft in an environment with a small overall dimension space. The second output shaft is provided with an external coupling to avoid being affected by the first output shaft during the transmission process.

[0024] In a preferred implementation of the multi-functional food processor, the power assembly further includes a fixed gear ring, which includes an integrally formed first gear ring and a second gear ring. The first planet gear of the first reduction assembly meshes with the first gear ring, and the second planet gear meshes with the second gear ring.

[0025] The fixed gear ring includes an integrally formed first gear ring and a second gear ring, with a compact structure, further improving the size of the power assembly. Moreover, the structure of the fixed gear ring is adapted to the assembly method in this application. The first output shaft is limited in the second planet carrier, and then the second planet carrier and the first planet carrier are respectively matched with the fixed gear ring, so that the connection between the first output shaft and the first planet carrier can be realized. The integration of the fixed gear ring is beneficial to the separate limitation and simultaneous installation and cooperation of the second planet carrier and the first planet carrier, improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0027] Figure 1 It is a schematic structural diagram of the multi-functional food processor in an implementation manner of the present application.

[0028] Figure 2 It is an exploded structural diagram of the power assembly in an implementation manner of the present application.

[0029] Figure 3 It is a partial structure installation schematic diagram of the power assembly in an implementation manner of the present application.

[0030] Figure 4 It is a sectional structural diagram of the power assembly in an implementation manner of the present application.

[0031] Figure 5 It is a schematic diagram of the limiting relationship between the first output shaft and the second planet carrier in an implementation manner of the present application.

[0032] Figure 6 It is a schematic diagram of the circumferential clearance formed by multiple second planet gears in an implementation manner of the present application.

[0033] Figure 7 It is a schematic diagram of the connection method between the first planet carrier and the first output shaft in Embodiment 1 of the present application.

[0034] Figure 8 It is a schematic diagram of the connection method between the first planet carrier and the first output shaft in Embodiment 2 of the present application.

[0035] Figure 9 It is a schematic diagram of the connection method between the first planet carrier and the first output shaft in Embodiment 3 of the present application.

[0036] List of reference numerals:

[0037] 1 - Main body, 21 - Cup lid, 22 - Cup body, 3 - First workpiece, 4 - Motor, 5 - First reduction assembly, 51 - First sun gear, 52 - First planet gear, 53 - First planet carrier, 54 - First output shaft, 541 - Limiting part, 542 - Second flat position, 55 - First drive shaft, 551 - First flat position, 6 - Second reduction assembly, 61 - Second sun gear, 62 - Second planet gear, 63 - Second planet carrier, 632 - Bearing, 631 - Step, 7 - Fixed ring gear, 71 - Upper end cover, 72 - Lower end cover, 73 - Wear-resistant part, 74 - First ring gear, 75 - Second ring gear. Detailed implementation manners

[0038] To more clearly illustrate the overall concept of this application, the following will be further described in detail by way of examples in combination with the accompanying drawings of the specification.

[0039] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited by the specific implementation manners disclosed below.

[0040] As Figure 1 shown, in one implementation manner, the multifunctional food processor includes a main body 1 provided with a power assembly, a processing cup composed of a cup lid 21 and a cup body 22, a first workpiece 3, and a second workpiece (not shown). Combining Figure 2 , Figure 3 , Figure 4 , the power assembly includes a motor 4, a first reduction assembly 5 and a second reduction assembly 6 driven by the motor 4, and a fixed ring gear 7. The first reduction assembly 5 and the second reduction assembly 6 respectively drive the first workpiece 3 and the second workpiece. Among them, the first reduction assembly 5 outputs a relatively high speed, and the first workpiece can be a crushing knife; the second reduction mechanism 6 outputs a relatively low speed, and the second workpiece can be a stirring member, a dough mixing rod, etc. The first reduction assembly 5 includes a first sun gear 51, a first planet gear 52, and a first planet carrier 53 and a first output shaft 54 that are separately connected. The first sun gear 51 is driven by the motor shaft of the motor 4. The second reduction assembly 6 includes a second sun gear 61 connected to the first planet carrier 53, a plurality of second planet gears 62 meshing with the second sun gear 61, and a second planet carrier 63. As Figure 5 , Figure 6 shown, the circumferential gap L1 formed by the plurality of second planet gears 62 is smaller than the maximum outer diameter L2 of the first output shaft 54, and the first output shaft 54 is limit-mounted on the second planet carrier 63 to be connected to the first planet carrier 53.

[0041] The assembly of the first reduction component and the second reduction component in this application is referred to Figure 3 , as Figure 3 shown, after the first output shaft 54 is limit-mounted on the second planetary carrier 63 and assembled with the second planet gear 62, it is inserted into the fixed ring gear 7 according to the arrow slanting upward. The first planet gear 52 and the first planetary carrier 53 are inserted into the fixed ring gear 7 according to the arrow slanting downward, and then the connection between the first output shaft 54 and the first planetary carrier 53 is realized. The specific connection method will be described in detail later.

[0042] Therefore, for the multifunctional food processor provided in this application, the first reduction component includes a first planetary carrier 53 and a first output shaft 54 that are separately connected. The first output shaft 54 is connected to the first planetary carrier 53 in a disassembled manner. On the premise of ensuring the axial cooperation relationship between the first output shaft 54 and the first planetary carrier 53, the dimensions of the first output shaft 54 and the second planetary gear set can be adjusted appropriately according to needs without affecting each other. When the second planetary gear set is not restricted by the size of the first output shaft 54, the circumferential gap formed by multiple second planet gears 62 is smaller than the maximum outer diameter of the first output shaft 54. On the one hand, the overall size of the second reduction component is reduced, and the size of the overall power component is adjusted on the premise that the size of the first output shaft 54 is not affected, reducing the size of the power component and facilitating user use and storage. On the other hand, the output end of the first output shaft 54 can maintain the traditional size, and then be adapted to existing processing parts, without the need to adjust the size of the processing parts that are standard parts, and can be directly adapted to more current processing parts. The first output shaft 54 is independently arranged as a disassembled part from the first planetary carrier 53. The first output shaft 54 is limit-mounted on the second planetary carrier 63 to be connected to the first planetary carrier 53, that is, the traditional installation method is changed to avoid the first output shaft being limited only by the first planetary carrier 53. During the assembly process, the first output shaft 54 is first limited in the second planetary carrier 63, and then the second planetary carrier 63 is matched with the first planetary carrier 53, so as to realize the connection between the first output shaft 54 and the first planetary carrier 53. Therefore, after the assembly is completed, the first output shaft 54 is connected and limited by the first planetary carrier 53 and also limited and supported by the second planetary carrier 63. With multi-layer limiting, the positioning is reliable, avoiding the situation of a cantilever, thereby reducing the phenomenon of shaking of the first output shaft 54, maintaining the stable output of the first speed and the second speed, ensuring the transmission efficiency, and reducing the transmission noise.

[0043] In a preferred embodiment, the circumferential gap L1 formed by multiple second planet gears 62 satisfies: 5mm ≤ L1 ≤ 20mm;

[0044] Preferably, the maximum outer diameter L2 of the first output shaft satisfies: 10mm ≤ L2 ≤ 30mm.

[0045] More preferably, the circumferential gap L1 formed by the plurality of second planet gears 62 satisfies 5 mm ≤ L1 ≤ 16 mm; and the maximum outer diameter L2 of the first output shaft satisfies 16 mm < L2 ≤ 30 mm.

[0046] The minimum value of L1 is 5 mm, which can effectively achieve secondary deceleration and is beneficial to realizing the slow stirring function of the food processor, such as kneading dough and chopping, to avoid the ingredients from splashing due to too high rotation speed during the stirring process; the maximum value of L1 is 20 mm, which can avoid the overall size of the secondary deceleration component from being too large, resulting in a relatively large size of the power component, and is beneficial to reducing the overall size of the machine and facilitating the user to hold and store.

[0047] The minimum value of L2 is 10 mm and the maximum value is 30 mm. On the one hand, it can avoid the influence of too small size on its structural strength and ensure the reliable output of the first rotation speed. On the other hand, it can avoid the overall size of the machine from being too large due to too large size.

[0048] Furthermore, 5 mm ≤ L1 ≤ 16 mm; 16 mm < L2 ≤ 30 mm is more beneficial to the miniaturization of the overall size of the machine and at the same time satisfies the reliable output of the first output shaft.

[0049] In a preferred embodiment, as Figure 3 、 Figure 4 shown, a limiting portion 541 is convexly provided on the outer periphery of the first output shaft 54, and the outer diameter of the limiting portion 541 constitutes the maximum outer diameter of the first output shaft 54. The limiting portion 541 is axially limited between the second planet carrier 63 and the second planet gear 62.

[0050] In this embodiment, the circumferential gap L1 formed by the plurality of second planet gears 62 is 16 mm, and the maximum outer diameter L2 of the first output shaft 54, that is, the outer diameter of the limiting portion 541, is 19 mm.

[0051] The first output shaft 54 realizes the limiting cooperation with the second planet carrier 63 by providing the limiting portion 541. The outer diameter of the limiting portion 541 constitutes the maximum outer diameter of the first output shaft 54. During the assembly process, only the limiting portion 541 of the first output shaft 54 needs to be aligned and installed, which is convenient for the cooperation between the first output shaft 54 and the second planet carrier 63 and further avoids the mutual influence of the overall size of the first output shaft 54 and the size of the second planetary gear set. The outer diameter of the limiting portion 541 constitutes the maximum outer diameter of the first output shaft 54 and is axially limited between the second planet carrier 63 and the second planet gear 62, and the limiting is more reliable, strengthening the axial positioning of the second planet carrier 63 on the first output shaft 54.

[0052] In a preferred embodiment, the second planet carrier 63 is provided with a step 631 for installing the bearing 632. The bearing is sleeved on the first output shaft 54 to radially support the first output shaft 54, and the inner diameter of the bearing 632 is smaller than the maximum outer diameter of the first output shaft 54.

[0053] The second planetary bracket 63 is provided with a step 631 and a bearing 632. The step 631 determines the matching position of the second output shaft to achieve support positioning, and can pre-position the first output shaft 54 ​​during assembly, which is convenient for installation and alignment. A bearing 632 is provided in the step 631, and the bearing 632 radially supports the first output shaft 54 ​​to ensure the concentricity of the installation. The step 631 and the bearing 632 cooperate to achieve all-round support for the first output shaft 54 ​​in the axial and radial directions, avoiding the problem of large shaking at the output end of the first output shaft 54, and further achieving stable output of the first speed and the second speed. In addition, the bearing 632 can be used as a wear-resistant component to avoid wear between the first output shaft 54 ​​and the second planetary bracket 63, ensuring the stability of the transmission efficiency and the speed, and improving the overall service life.

[0054] The step 631 and the bearing 632 of the second planetary bracket 63 directly pre-position the limiting portion 541 of the first output shaft 54 ​​to ensure the stability and reliability of the first output shaft 54 ​​after installation.

[0055] exist Figure 5 There is a gap h1 between the inner side of the bearing 632 and the first output shaft 54, and there is a gap h2 between the outer side of the bearing 632 and the step 631, wherein 0.1≤h1≤0.3mm, 0.3<h2≤0.7mm.

[0056] By setting the inner and outer clearances of the bearing 632, the bearing 632 supports the first output shaft 54 ​​on the one hand, and prevents the first output shaft 54 ​​from being deformed too much, which would cause deformation and damage to the second planetary bracket 63 or the second output shaft of the second planetary bracket 63.

[0057] In a preferred embodiment, Figure 3 , Figure 4 , Figure 5 As shown, a first drive shaft 55 for driving the second sun gear 61 is connected between the first planetary carrier 53 and the first output shaft 54 ​​.

[0058] The first drive shaft 55 serves as an intermediate connecting piece to connect the first planetary carrier 53 with the first output shaft 54. The first drive shaft 55 can be manufactured separately as a metal part with high hardness and strength, and is injection molded onto the first planetary carrier 53 to achieve a reliable connection between the first planetary carrier 53 and the first output shaft 54, while achieving reliable transmission with the second sun gear 61.

[0059] The present application does not limit the specific connection position between the first planetary bracket 53 and the first output shaft 54, and the specific position of the disassembly and assembly can adopt any of the following embodiments:

[0060] Embodiment 1, as Figure 3 , Figure 4 , Figure 5As shown, the first drive shaft 55 is integrally connected to the first planetary carrier 53. In fact, the first drive shaft 55 and the first planetary carrier 53 can be injection molded as one body. The first drive shaft 55 is provided with a plug-in portion for detachably connecting to the first output shaft 54.

[0061] Preferably, as Figure 7 shown, in this embodiment, the plug-in portion is the first flat position 551. A flat position groove matching with the first flat position 551 is provided on the first output shaft 54. The first output shaft 54 is locked with the first flat position 551 by screws. Of course, it can also be replaced with the matching mode of spline and spline groove.

[0062] Preferably, as shown in 7, in this embodiment, the second sun gear 61 is integrally formed on the outer periphery of the first drive shaft 55. Of course, the second sun gear 61 can also be detachably sleeved on the outer periphery of the first drive shaft 55.

[0063] Embodiment 2, as Figure 8 shown, the first drive shaft 55 is integrally connected to the first planetary carrier 53, which can be injection molded as one body or integrally formed. The second sun gear 61 is integrally formed on the outer periphery of the first drive shaft 55. The first output shaft 54 is detachably connected to the second sun gear 61.

[0064] Specifically, the first output shaft 54 is provided with a second flat position 542, and the second sun gear is provided with a flat position groove for the second flat position 542 to be inserted into.

[0065] Embodiment 3, as Figure 9 shown, the first drive shaft 55 is integrally connected to the first output shaft 54, and the first drive shaft 55 is detachably connected to the first planetary carrier 53.

[0066] Specifically, a third flat position is provided on the first drive shaft 55 and inserted into the first planetary carrier.

[0067] In the above three ways, directly detachably connecting the first output shaft 54 to the first drive shaft 55, detachably connecting the first output shaft 54 to the second sun gear 61, and detachably connecting the first output shaft 54 to the first planetary carrier 53 through the first drive shaft 55 (including detachably connecting the first output shaft 54 to the first planetary carrier 53 through the second sun gear 61), etc., can all realize that the size of the first output shaft 54 and the size of the second planetary gear set do not affect each other on the premise of ensuring the axial matching relationship between the first output shaft 54 and the first planetary carrier 53, which is beneficial to reducing the size of the power assembly and facilitating storage. At the same time, the disassembly and assembly parts can be flexibly adjusted according to the actual design and requirements, which is convenient for the overall installation of the power assembly.

[0068] In a preferred embodiment, as Figure 4As shown, an inner coupling is integrally provided at the output end of the first output shaft 54; the second planetary support 63 is integrally formed or separately connected with a second output shaft, and the second output shaft is connected to a second workpiece to be machined. The second output shaft is an outer coupling.

[0069] The first output shaft 54 is integrally provided with an inner coupling. The inner coupling can be directly connected to the first planetary support 53 through the first output shaft 54 and thus be driven, and then transmit power to the first workpiece to be machined, reducing the assembly steps compared with the separate connection method. The first output shaft 54 is connected with an inner coupling instead of an outer coupling, which can avoid interference with the second output shaft in an environment with a small overall size space. The second output shaft is provided with an outer coupling to avoid being affected by the first output shaft 54 during the transmission process.

[0070] In a preferred embodiment, as Figure 2 shown, the fixed gear ring 7 is provided with an upper end cover 71 and a lower end cover 72. Preferably, the motor support serves as the upper end cover 71, and wear-resistant parts 73 are provided inside the end cover. The wear-resistant parts include wear-resistant bearings and wear-resistant gaskets.

[0071] In a preferred embodiment, in combination with Figure 2 、 Figure 3 , the fixed gear ring 7 includes a first gear ring 74 and a second gear ring 75 integrally formed. The first planetary gear 52 of the first reduction assembly meshes with the first gear ring 74, and the second planetary gear 62 meshes with the second gear ring 75.

[0072] The fixed gear ring 7 includes a first gear ring 74 and a second gear ring 75 integrally formed, with a compact structure, further improving the size of the power assembly. Moreover, the structure of the fixed gear ring 7 is adapted to the assembly method in the present application. The assembly method combines Figure 3 . The first output shaft 54 is limited in the second planetary support 63, and then the second planetary support 63 and the first planetary support 53 are respectively fitted with the fixed gear ring 7, and the connection between the first output shaft 54 and the first planetary support 53 can be realized. The integration of the fixed gear ring 7 is beneficial to the separate limitation of the second planetary support 63 and the first planetary support 53 and the simultaneous installation and cooperation, improving the installation efficiency.

[0073] In the present application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0074] The technical solutions protected by this application are not limited to the above embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments is within the protection scope of this application. Although the present application has been described in detail with general descriptions and specific embodiments above, some modifications or improvements can be made to it based on this application, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of this application all fall within the scope claimed by this application.

Claims

1. A speed reducer with dual-speed output, comprising a first reduction component and a second reduction component assembled and fitted together. Characterized in that The first reduction component includes a first planetary carrier and a first output shaft drivingly connected to the first planetary carrier. The second reduction component includes a second sun gear connected to the first planetary carrier, a plurality of second planetary gears meshing with the second sun gear, and a second planetary carrier drivingly connected to the second planetary gears. The second planetary carrier is drivingly connected to a second output shaft. A step is provided on the second planetary carrier, and a bearing is provided on the step. The bearing is sleeved on the first output shaft. The step and the bearing cooperate together to axially and radially support the first output shaft.

2. The speed reducer with dual-speed output according to claim 1, Characterized in that A limiting portion is convexly provided on the outer periphery of the first output shaft. The step and the bearing cooperate together to axially support the limiting portion.

3. The speed reducer with dual-speed output according to claim 2, Characterized in that The limiting portion is axially limited between the second planetary gear and the second planetary carrier.

4. The speed reducer with dual-speed output according to claim 1 or 2, Characterized in that The first reduction component includes a first planetary carrier and a first output shaft connected separately. A first drive shaft for driving the second sun gear is connected between the first planetary carrier and the first output shaft.

5. The speed reducer with dual-speed output according to claim 4, Characterized in that The first drive shaft is integrally connected to the first planetary carrier, and the first drive shaft is provided with a plug-in portion with a radially reduced size for separate connection with the first output shaft.

6. The speed reducer with dual-speed output according to claim 4, Characterized in that The first drive shaft is integrally connected to the first output shaft, and the first drive shaft is separately connected to the first planetary carrier.

7. The speed reducer with dual-speed output according to claim 1, Characterized in that A limiting portion is convexly provided on the outer periphery of the first output shaft. A first drive shaft for driving the second sun gear is connected between the first planetary carrier and the first output shaft. The limiting portion is located below the second planetary gear, and the limiting portion is axially limited between the first drive shaft and the second planetary carrier.

8. The speed reducer with dual-speed output according to claim 1, Characterized in that The first output shaft is pre-positioned behind the second planetary carrier and then drivingly connected to the first planetary carrier.

9. The speed reducer with dual-speed output according to claim 1, Characterized in that It further includes a fixed gear ring for installing the first reduction component and the second reduction component. The fixed gear ring is provided with an upper end cover and a lower end cover, and a wear-resistant member is provided in the upper end cover or the lower end cover.

10. A multifunctional food processor, Characterized in that A speed reducer with dual-speed output according to any one of claims 1 to 9, the food processor further comprising a processing cup, a first processing member and a second processing member mounted in the processing cup, a motor for driving a first speed reduction assembly and a second speed reduction assembly, the first speed reduction assembly and the second speed reduction assembly respectively driving the first processing member and the second processing member, the first output shaft being in transmission connection with the first processing member, and the second output shaft being in transmission connection with the second processing member.

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