Noise-reduction food processor

Abstract

The utility model discloses a noise reduction food processor which comprises a main machine and a driving assembly arranged in the main machine, the driving assembly comprises a motor and a reduction gearbox assembly fixed to the upper portion of the motor, the main machine comprises a shell, a sound insulation cover flexibly installed on the shell is arranged in the shell, and the motor and the reduction gearbox assembly are flexibly installed in the sound insulation cover. An opening for the output part of the driving assembly to extend out is formed in the top of the sound-proof cover, and a flexible sound-proof sleeve is clamped between the sound-proof cover and the reduction gearbox assembly. The sound insulation cover can wrap the motor and the reduction gearbox assembly at the same time, the sound insulation effect can be enhanced, and noise transmitted to the outside is reduced. On the basis, the flexible sound insulation sleeve is clamped between the sound insulation cover and the reduction gearbox assembly, on one hand, the sound insulation sleeve and the sound insulation cover form double wrapping on the reduction gearbox assembly, the sound insulation effect can be improved, and on the other hand, the flexible sound insulation sleeve can limit shaking of the reduction gearbox assembly in the sound insulation cover; the problem that noise is increased due to gear box shaking caused by motor shaking can be solved.

Description

Technical Field

[0001] The utility model relates to the field of food processing machines, in particular to a noise-reducing food processing machine. Background Art

[0002] Existing food processing machines with motors built into the main unit tend to generate loud noise when the motors rotate at high speeds. Simply relying on the main unit shell to wrap the motor has poor sound insulation effect and is difficult to meet noise reduction requirements. The usual practice is to set a motor cover on the outside of the motor to enhance the sound insulation effect and reduce the noise level transmitted to the outside.

[0003] In order to expand the functions of food processing machines, a reduction mechanism is usually superimposed on the existing motor, and the reduction mechanism is used to widen the speed range of the motor and improve the output torque of the motor. However, the size of the motor with the reduction mechanism superimposed increases, and a special mounting structure is required between the reduction mechanism and the motor to meet the concentricity requirements between the motor and the reduction mechanism. Furthermore, the reduction mechanism is also used to achieve multi-speed output, and in particular, multiple output terminals are provided, which makes the output module of the motor and the reduction mechanism have a larger diameter. Therefore, the existing method of providing a motor cover to wrap the motor on the outside of the motor cannot be simply installed on the outside of the motor and the reduction mechanism. This is because a motor cover that is simply installed on the outside of the motor and the reduction mechanism needs to completely wrap the motor and the reduction mechanism, which will occupy a large volume, especially a high height in the axial direction. Such a motor cover already plays an effect similar to the shell of the existing host. If a shell is provided on the outside of the motor cover with such a structure, the volume of the host will be too large and unsuitable for normal use.

[0004] In particular, the existing method of stacking the motor and reduction mechanism, where two relatively independent modules are stacked axially, has a relatively large axial height, making it unsuitable for an external motor cover. This also means that although there are many existing technical solutions for installing motor covers of various structures outside the motor, there is no technology for installing a motor cover outside the motor and reduction mechanism. As a result, food processors with reduction mechanisms still suffer from high noise and poor sound insulation. In addition, the distance between the center of gravity of the existing reduction mechanism and the center of gravity of the motor is large. When the motor shakes, it is easy for the reduction mechanism to shake significantly, causing friction and collision between components, generating abnormal noise, which further increases the noise level. Utility Model Content

[0005] The utility model provides a noise-reducing food processing machine, aiming to solve the problems that the existing drive mechanism with a reduction output has a gear box in an open environment inside a main body housing, the noise generated by the gear box during operation is easily transmitted, resulting in loud operating noise, and the shaking of the motor causes the gear box to shake, resulting in friction and collision between parts, which increases the source of noise. In particular, the existing motor and reduction mechanism still have a relatively high bearing height, which causes the main body to be too high.

[0006] The utility model discloses a noise-reducing food processing machine, comprising a main unit and a drive assembly arranged in the main unit, the drive assembly comprising a motor and a reduction gearbox assembly fixed above the motor, the main unit comprising a shell, a sound insulation cover flexibly mounted on the shell being provided in the shell, the motor and the reduction gearbox assembly being flexibly mounted in the sound insulation cover, an opening being provided on the top of the sound insulation cover for the output part of the drive assembly to extend out, and a flexible sound insulation sleeve being sandwiched between the sound insulation cover and the reduction gearbox assembly.

[0007] The noise-reducing food processing machine of the present invention also has the following additional technical features:

[0008] A first mounting hole is provided at the upper end of the soundproof cover, and a first screw column extending downward is provided on the shell. The first screw column is passed through the first mounting hole, and a first shock-absorbing pad is provided between the first screw column and the first shock-absorbing pad.

[0009] The bottom of the soundproof cover is provided with a convex rib, and a flexible pad is sleeved on the outer side of the convex rib so as to flexibly abut against the bottom of the shell through the flexible pad.

[0010] The sound insulation cover includes an upper cover and a lower cover, the motor is provided with a second mounting hole, one of the upper cover and the lower cover is provided with a second screw column, the second screw column is passed through the second mounting hole and a second shock-absorbing pad is provided between the two.

[0011] One of the upper cover and the lower cover is provided with a second screw column, and the other is provided with an assembly hole. The second screw column passes through the second mounting hole and penetrates into the assembly hole. The upper end of the second shock-absorbing pad isolates the motor from the upper cover, and the lower end of the second shock-absorbing pad isolates the motor from the lower cover.

[0012] The upper end of the sound insulation sleeve is provided with a sealing rib abutting against the inner wall of the sound insulation cover.

[0013] An annular positioning portion is protruded from the outer wall of the sound insulation sleeve, and the positioning portion abuts against the inner wall of the sound insulation cover.

[0014] The reduction gearbox assembly includes a reduction gearbox housing, a gear assembly arranged in the reduction gearbox housing, and an output portion arranged above the gear assembly. The sound insulation sleeve completely wraps the reduction gearbox housing in the axial direction.

[0015] The top end of the sound insulation sleeve is not lower than the top end of the sound insulation cover.

[0016] The drive assembly includes an upper end cover of the motor, and the motor shaft of the motor is arranged through the upper end cover of the motor. The reduction gear assembly includes a reduction gear upper shell and a gear assembly. The reduction gear upper shell is fixed to the upper side of the upper end cover of the motor so that the reduction gear upper shell and the upper end cover of the motor enclose the gear assembly, and the reduction gear assembly is arranged coaxially with the motor shaft.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0018] 1. In response to the problem that the existing motor cover only covers the motor, while the gearbox is still exposed in the housing, which makes the noise of the gearbox easily transmitted when it is working, this application adopts a soundproof cover that can cover the motor and the reduction box assembly at the same time, which can enhance the sound insulation effect and thus reduce the noise level transmitted to the outside. On this basis, by sandwiching a flexible soundproof sleeve between the soundproof cover and the reduction box assembly, on the one hand, the soundproof sleeve and the soundproof cover form a double wrapping of the reduction box assembly, which can improve the sound insulation effect. On the other hand, the flexible soundproof sleeve can limit the shaking of the reduction box assembly in the soundproof cover, which can solve the problem of gearbox shaking caused by motor shaking and increase noise, and greatly reduce the overall working noise of the machine.

[0019] In addition, the motor and reduction gearbox assembly are flexibly mounted within the soundproof cover, and the soundproof cover is flexibly mounted within the housing, preventing the vibration generated by the motor from being transmitted to the soundproof cover and the housing, thereby achieving shock absorption and noise reduction. The soundproof cover is directly attached to the upper part of the reduction mechanism using a soundproof sleeve. The soundproof cover forms a part of the reduction mechanism and does not significantly increase the external volume of the motor and reduction gearbox assembly, meeting the requirement for a small size of the motor and reduction gearbox assembly. The soundproof sleeve can prevent the vibration and noise of the reduction gearbox assembly from escaping during operation, still meeting the noise reduction requirements of the food processor. Furthermore, in order to meet the requirements of different speeds of the food processor, especially multiple output terminals, an opening is provided at the top of the soundproof cover for the output part of the drive assembly to extend out. Since the main working parts of the motor and reduction gearbox assembly are isolated at the bottom by the soundproof cover and the soundproof sleeve, even if an opening is provided at the top, no noise will be transmitted during operation, thus meeting the noise reduction requirements of the food processor.

[0020] 2. In a preferred embodiment, a first mounting hole is defined at the upper end of the soundproof cover, and a first downwardly extending screw post is provided on the housing. The first screw post is inserted into the first mounting hole, with a first shock-absorbing pad disposed therebetween. The soundproof cover is completely separated from the upper end of the housing by the first shock-absorbing pad, preventing vibrations transmitted to the soundproof cover from being transmitted to the housing, thereby facilitating vibration and noise reduction, and improving the noise reduction performance of the entire device.

[0021] 3. As a preferred embodiment, the bottom of the soundproof cover is provided with a rib, and a flexible pad is provided on the outer side of the rib to flexibly abut against the bottom of the housing via the pad. The soundproof cover is completely separated from the bottom of the housing by the flexible pad, preventing vibrations transmitted to the soundproof cover from being transmitted to the housing, thereby facilitating vibration and noise reduction, and improving the noise reduction performance of the entire device.

[0022] 4. In a preferred embodiment, the soundproof enclosure includes an upper enclosure and a lower enclosure. The motor is provided with a second mounting hole. One of the upper and lower enclosures is provided with a second screw post. The second screw post is inserted into the second mounting hole, with a second shock-absorbing pad disposed therebetween. The second shock-absorbing pad completely isolates the motor from the soundproof enclosure, preventing motor vibration from being transmitted to the enclosure, thereby facilitating vibration and noise reduction, and improving the noise reduction performance of the entire device.

[0023] As a preferred embodiment of this embodiment, one of the upper and lower covers is provided with a second screw post, and the other is provided with an assembly hole. The second screw post passes through the second mounting hole and into the assembly hole. The upper end of the second shock-absorbing pad isolates the motor from the upper cover, while the lower end of the second shock-absorbing pad isolates the motor from the lower cover. This embodiment allows the motor, upper cover, and lower cover to be secured together using the same fastener, saving parts, simplifying installation, and promoting a compact structural layout.

[0024] 5. As a preferred embodiment, the upper end of the sound insulation sleeve is provided with a sealing rib that abuts the inner wall of the sound insulation cover. The provision of the sealing rib ensures that the sound insulation sleeve is in close contact with the inner wall of the sound insulation cover, preventing external liquid from flowing into the sound insulation cover through the gap between the two and damaging the internal electrical components, thereby ensuring the performance and life of the electrical components.

[0025] 6. As a preferred embodiment, the outer wall of the sound insulation sleeve is provided with an annular positioning portion that abuts the inner wall of the sound insulation cover. Typically, the gearbox is vertically spaced a considerable distance from the motor mounting hole, and motor wobbling can cause even greater gearbox wobbling. To address this issue, the sound insulation cover abuts the positioning portion, keeping the reduction gearbox assembly, sound insulation sleeve, and sound insulation cover in close contact. This limits wobbling of the reduction gearbox assembly within the sound insulation cover, facilitating vibration and noise reduction.

[0026] 7. In a preferred embodiment, the reduction gearbox assembly includes a reduction gearbox housing, a gear assembly disposed within the reduction gearbox housing, and an output portion disposed above the gear assembly. The sound insulation sleeve completely axially encloses the reduction gearbox housing. By fully enclosing the reduction gearbox housing, the sound insulation sleeve effectively prevents the transmission of noise generated by the internal gears, thereby enhancing the sound insulation effect.

[0027] 8. As a preferred embodiment, the top of the sound insulation sleeve is not lower than the top of the sound insulation cover. If the top of the sound insulation sleeve is lower than the top of the sound insulation cover, external liquid may flow in through the opening of the sound insulation cover and easily flow downward into the sound insulation cover through the gap between the sound insulation sleeve and the sound insulation cover, thereby damaging internal electrical components. To avoid this, the axial length of the sound insulation sleeve can be extended so that the top of the sound insulation sleeve is not lower than the top of the sound insulation cover. The sound insulation sleeve forms a certain seal on the opening to prevent liquid from seeping downward.

[0028] 9. As a preferred embodiment, the drive assembly includes a motor upper end cover, the motor shaft of the motor is set through the motor upper end cover, the reduction gear assembly includes a reduction gear upper shell and a gear assembly, the reduction gear upper shell is fixed to the upper side of the motor upper end cover so that the reduction gear upper shell and the motor upper end cover enclose the gear assembly, and the reduction gear assembly is coaxially arranged with the motor shaft. When the existing gearbox is installed, the motor bracket is used as the positioning reference, and the motor is positioned with the motor upper cover as the positioning reference. If there is an error in the positioning and installation of the motor bracket and the motor upper cover, that is, the positioning centers of the two do not coincide, it will affect the coaxiality of the gearbox and the motor shaft. In this case, there is a risk of interference when the teeth inside the gearbox are meshing, and the gears will be severely worn, which will easily cause abnormal sounds and increase noise. To address the aforementioned issues, the food processor of the present application omits the motor bracket. The reduction gearbox assembly and the motor both use the motor's upper end cap as a positioning reference, eliminating the need for multi-stage positioning between the reduction gearbox assembly and the motor. This ensures the coaxiality of the reduction gearbox assembly and the motor shaft, thereby improving transmission stability, ensuring more uniform gear meshing, and reducing operating noise. Furthermore, the reduction gearbox upper housing and the motor's upper end cap jointly enclose the gear assembly, eliminating the need for a reduction gearbox lower housing. This simplifies the structure of the reduction gearbox assembly, resulting in a compact drive transmission mechanism and promoting miniaturization of the main machine.

[0029] By omitting the motor bracket, the motor and reducer assembly are formed into an integrated assembly, rather than a stack of two independent modules. This fully ensures the concentricity requirements of the motor and reducer assembly, reduces the volume of the motor and reducer assembly, and facilitates the installation of a soundproof cover and soundproof sleeve directly outside the motor and reducer assembly. Moreover, such a structural arrangement does not increase the volume or axial height between the motor and reducer. In fact, by reducing the axial structural components and mounting structure, the axial height of the motor and reducer assembly can be reduced, which also reduces the axial height of the main machine and food processor. Since the axial height of the motor and reducer assembly is reduced, the center of gravity is also lowered, making the motor and reducer assembly more stable during operation, and the main machine and food processor also operate more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 This is a schematic cross-sectional view of a host computer according to one embodiment of the present application.

[0032] Figure 2 This is an exploded schematic diagram of the mainframe structure according to one embodiment of the present application.

[0033] Figure 3 for Figure 2 Schematic cross-sectional view of the structure.

[0034] Figure 4 This is a structural schematic diagram of a reduction gearbox assembly installed on the upper end cover of a motor in one embodiment of the present application.

[0035] Reference numerals:

[0036] 10. Main unit; 101. Housing; 102. First screw column; 103. Support rib; 11. Motor; 111. Second mounting hole; 112. Motor shaft; 12. Gearbox assembly; 121. Gearbox housing; 122. Output unit; 123. Gearbox upper shell; 124. Gear assembly; 13. Sound insulation cover; 131. Opening; 132. First mounting hole; 133. Raised rib; 14. Sound insulation sleeve; 141. Sealing rib; 142. Positioning unit; 15. First shock-absorbing pad; 16. Flexible pad; 17. Upper cover; 171. Second screw column; 18. Lower cover; 181. Assembly hole; 19. Second shock-absorbing pad; 20. Motor upper end cover. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

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

[0040] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through a transition structure, but are connected solely through a connecting structure to form a single entity. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0044] like Figures 1 to 4As shown, the present application provides a noise-reducing food processor, comprising a main unit 10 and a drive assembly arranged in the main unit 10, the drive assembly comprising a motor 11 and a reduction gearbox assembly 12 fixed above the motor 11, the main unit 10 comprising a shell 101, a soundproof cover 13 flexibly mounted on the shell 101 is provided in the shell 101, the motor 11 and the reduction gearbox assembly 12 are flexibly mounted in the soundproof cover 13, an opening 131 is provided at the top of the soundproof cover 13 for the output part 122 of the drive assembly to extend out, and a flexible soundproof sleeve 14 is sandwiched between the soundproof cover 13 and the reduction gearbox assembly 12.

[0045] In response to the problem that the existing motor cover only wraps the motor, and the gearbox is still exposed in the housing, which makes the noise of the gearbox easily transmitted when it is working, the present application adopts a sound insulation cover 13 that can wrap the motor 11 and the reduction box assembly 12 at the same time, which can enhance the sound insulation effect and thus reduce the noise level transmitted to the outside. On this basis, by sandwiching a flexible sound insulation sleeve 14 between the sound insulation cover 13 and the reduction box assembly 12, on the one hand, the sound insulation sleeve 14 and the sound insulation cover 13 form a double wrapping of the reduction box assembly 12, which can improve the sound insulation effect. On the other hand, the flexible sound insulation sleeve 14 can limit the reduction box assembly 12 from shaking in the sound insulation cover 13, which can solve the problem of gearbox shaking caused by the shaking of the motor 11 and increase the noise, so that the overall working noise of the machine is greatly reduced.

[0046] In addition, the motor 11 and the reduction gear assembly 12 are flexibly installed in the soundproof cover 13, and the soundproof cover 13 is flexibly installed in the shell 101, which can prevent the vibration generated by the operation of the motor 11 from being transmitted to the soundproof cover 13 and the shell 101, thereby achieving shock absorption and noise reduction.

[0047] like Figures 1 to 3As shown, on the basis of the sound insulation cover 13 simultaneously wrapping the motor 11 and the reduction gearbox assembly 12, a sound insulation sleeve 14 is further provided between the sound insulation cover 13 and the reduction gearbox assembly 12, so that the reduction gearbox assembly 12 is wrapped in multiple layers of the sound insulation sleeve 14, the sound insulation cover 13 and the housing 101. Since the upper end of the reduction gearbox assembly 12 needs to extend out of the sound insulation cover 13, and for a larger output structure, a larger opening 131 needs to be provided for avoidance. A larger opening 131 increases the risk of noise transmission. By providing the sound insulation sleeve 14, the sound insulation performance of the reduction gearbox assembly 12 is further enhanced, which can compensate for the impact caused by the larger opening 131, and can achieve a good overall sound insulation effect, effectively reducing the noise level transmitted to the outside. It is understandable that on the basis of the sound insulation sleeve 14 wrapping the reduction gearbox assembly, the axial dimension of the sound insulation sleeve 14 can also be extended to partially wrap the motor 11, which can further reduce the noise transmission of the motor 11. In some embodiments, the soundproof cover 13 includes an upper cover 17 and a lower cover 18 that fit together axially. During assembly, the motor 11 and reduction gearbox assembly 12 are mated to the upper cover 17, and then the lower cover 18 is installed from below, simplifying the process. In other embodiments, the soundproof cover 13 includes two radially mating outer shells. By sandwiching the motor 11 and reduction gearbox assembly 12 between the two outer shells from the left and right sides, the installation is simplified and more efficient.

[0048] The output portion 122 of the drive assembly can be a single output shaft or a dual output shaft. For example, in the dual output shaft solution, the food processor includes an outer coupling and an inner coupling. The outer coupling is protruding above the reduction gearbox housing 121, and the inner coupling is connected to the upper end of the motor shaft 112. The outer coupling is used to output a low speed, enabling food processing at low speeds, while the inner coupling is used to output a high speed, enabling food processing at high speeds. This can enrich the use scenarios of the food processor and meet more user needs.

[0049] As a preferred embodiment, the upper end of the soundproof cover 13 is provided with a first mounting hole 132, and the housing 101 is provided with a first screw column 102 extending downward. The first screw column 102 is passed through the first mounting hole 132 and a first shock-absorbing pad 15 is provided between the two. Figure 1 or Figure 3 As shown, the soundproof cover 13 is completely separated from the upper end of the shell 101 by the first shock-absorbing pad 15, which prevents the vibration transmitted to the soundproof cover 13 from being transmitted to the shell 101, is beneficial to vibration reduction and noise reduction, and improves the noise reduction performance of the whole machine.

[0050] It is understandable that the arrangement positions of the first mounting hole and the first screw column are interchangeable, that is, when the sound insulation cover 13 is provided with the first screw column and the shell 101 is provided with the first mounting hole, the same effect can be achieved.

[0051] As a preferred embodiment, the bottom of the soundproof cover 13 is provided with a rib 133, and the outer side of the rib 133 is provided with a flexible pad 16 so as to flexibly abut against the bottom of the housing 101 through the flexible pad 16. The soundproof cover 13 is completely separated from the bottom of the housing 101 by the flexible pad 16, which prevents the vibration transmitted to the soundproof cover 13 from being transmitted to the housing 101, which is beneficial to vibration reduction and noise reduction, and improves the noise reduction performance of the whole machine. Figure 1 As shown, the bottom of the housing 101 is provided with an upwardly extending support rib 103 , which abuts against the flexible pad 16 to enhance the supporting effect.

[0052] As a preferred embodiment, the soundproof cover 13 includes an upper cover 17 and a lower cover 18, the motor 11 is provided with a second mounting hole 111, one of the upper cover 17 and the lower cover 18 is provided with a second screw column 171, the second screw column 171 is passed through the second mounting hole 111 and a second shock-absorbing pad 19 is provided between the two. Figure 2 As shown, the motor 11 can be completely separated from the sound insulation cover 13 by the second shock-absorbing pad 19, thereby preventing the vibration of the motor 11 from being transmitted to the sound insulation cover 13, which is beneficial to vibration reduction and noise reduction, and improves the noise reduction performance of the entire machine.

[0053] As a preferred embodiment of this embodiment, the upper cover 17 is provided with a second screw column 171, and the lower cover 18 is provided with an assembly hole 181. The second screw column 171 passes through the second mounting hole 111 and penetrates into the assembly hole 181. The upper end of the second shock-absorbing pad 19 isolates the motor 11 from the upper cover 17, and the lower end of the second shock-absorbing pad 19 isolates the motor 11 from the lower cover 18. Figure 3 As shown, in this embodiment, the motor 11, the upper cover 17, and the lower cover 18 can be fixed together using the same fastener, which can save parts, simplify installation, and promote a compact structure. The fastener can be a screw.

[0054] It is understandable that the positions of the second screw column 171 and the assembly hole 181 are interchangeable, that is, the same effect can be achieved when the upper cover 17 is provided with an assembly hole and the lower cover 18 is provided with the second screw column.

[0055] As a preferred embodiment, the upper end of the sound insulation sleeve 14 is provided with a sealing rib 141 that abuts against the inner wall of the sound insulation cover 13. Figure 2 and Figure 3 As shown, by providing sealing ribs 141, the sound insulation sleeve 14 can be tightly attached to the inner wall of the sound insulation cover 13, preventing external liquid from flowing into the sound insulation cover 13 through the matching gap between the two and damaging the internal electrical components, thereby ensuring the performance and life of the electrical components. Preferably, the sealing ribs 141 are located near the opening 131 to effectively prevent liquid from penetrating the matching gap between the sound insulation sleeve 14 and the sound insulation cover 13 through the opening 131.

[0056] As a preferred embodiment, an annular positioning portion 142 is protruded from the outer wall of the sound insulation sleeve 14, and the positioning portion 142 abuts the inner wall of the sound insulation cover 13. Typically, the gearbox is vertically spaced relatively large from the mounting hole of the motor 11. Shaking of the motor 11 can cause even greater shaking of the gearbox. To address this issue, the sound insulation cover 13 abuts the positioning portion 142, so that the reduction gearbox assembly 12, the sound insulation sleeve 14, and the sound insulation cover 13 are closely attached to each other. This limits shaking of the reduction gearbox assembly 12 within the sound insulation cover 13, facilitating vibration and noise reduction.

[0057] like Figure 2 As shown, the positioning portion 142 is an annular protrusion disposed below the sealing rib 141. Due to the flexibility of the sound insulation sleeve 14, the positioning portion 142 also provides a seal, preventing a large gap between the sound insulation sleeve 14 and the sound insulation cover 13 that would increase the risk of water ingress. The positioning portion 142 can be a continuous annular protrusion or comprise multiple protrusions spaced circumferentially, both of which can serve to position the reduction gearbox assembly 12.

[0058] As a preferred embodiment, the reduction gearbox assembly 12 includes a reduction gearbox housing 121, a gear assembly 124 disposed in the reduction gearbox housing 121, and an output portion 122 disposed above the gear assembly 124. The sound insulation sleeve 14 completely wraps the reduction gearbox housing 121 in the axial direction. Figure 1 As shown, by maximally wrapping the reducer housing 121 with the sound insulation sleeve 14, the noise generated by the internal gears can be effectively prevented from being transmitted, thereby enhancing the sound insulation effect. Specifically, the axial length of the sound insulation sleeve 14 is greater than the axial length of the reducer housing 121, the top of the sound insulation sleeve 14 is higher than the top of the reducer housing 121, and the bottom of the sound insulation sleeve 14 is lower than the bottom of the reducer housing 121. When the internal space of the sound insulation cover 13 allows, the lower end of the sound insulation sleeve 14 can extend to partially wrap the motor 11 to enhance the sound insulation effect. The gear assembly 124 specifically includes a sun gear fixed to the motor shaft 112, a planetary carrier, and a planetary gear set and an inner ring gear rotatably arranged on the planetary carrier. The planetary gear set is respectively engaged with the sun gear and the inner ring gear. The relevant working principle can be referred to the existing technology and will not be repeated here.

[0059] As a preferred embodiment, the top of the sound insulation sleeve 14 is not lower than the top of the sound insulation cover 13. When the top of the sound insulation sleeve 14 is lower than the top of the sound insulation cover 13, external liquid may flow in through the opening 131 of the sound insulation cover 13, and easily flow downward into the sound insulation cover 13 through the gap between the sound insulation sleeve 14 and the sound insulation cover 13, thereby damaging internal electrical components. To avoid this, the axial length of the sound insulation sleeve 14 can be extended so that the top of the sound insulation sleeve 14 is not lower than the top of the sound insulation cover 13. The sound insulation sleeve 14 forms a certain seal on the opening 131 to prevent liquid from seeping downward.

[0060] As a preferred embodiment, the drive assembly includes a motor upper end cover 20, the motor shaft 112 of the motor 11 is set through the motor upper end cover 20, the reduction gear assembly 12 includes a reduction gear upper shell 123 and a gear assembly 124, the reduction gear upper shell 123 is fixed to the upper side of the motor upper end cover 20 so that the reduction gear upper shell 123 and the motor upper end cover 20 enclose the gear assembly 124, and the reduction gear assembly 12 is coaxially arranged with the motor shaft 112.

[0061] When the existing gearbox is installed, the motor bracket is used as the positioning reference, while the motor is positioned on the motor cover. If there is an error in the positioning and installation of the motor bracket and the motor cover, that is, the positioning centers of the two do not coincide, it will affect the coaxiality of the gearbox and the motor shaft. In this case, there is a risk of interference when the teeth inside the gearbox are engaged, and the gears are seriously worn, which easily causes abnormal noise and increases noise. In order to solve the above problems, the food processing machine of the present application omits the motor bracket. The reduction gear assembly 12 and the motor 11 both use the motor cover 20 as the positioning reference, avoiding multi-stage positioning between the reduction gear assembly 12 and the motor 11, and ensuring the coaxiality of the reduction gear assembly 12 and the motor shaft 112, thereby improving transmission stability, making gear meshing more uniform, and reducing operating noise. In addition, the reduction gear upper shell 123 and the motor cover 20 jointly surround the gear assembly 124, and the reduction gear lower shell can be omitted, simplifying the structure of the reduction gear assembly 12. The structural layout of the entire drive transmission mechanism is compact, which can promote the miniaturization of the main unit 10.

[0062] Specifically, such as Figure 4 As shown, the upper side of the motor upper end cover 20 is used for the installation and positioning of the reduction gearbox assembly 12, and the lower side of the motor upper end cover 20 is used for the installation and positioning of the motor body. The present application uses a small number of structural parts, which not only simplifies the structure and installation, but also improves the coaxiality of the reduction gearbox assembly 12 and the motor shaft 112. The motor shaft 112 has good coaxiality with the motor upper end cover 20. By directly positioning and installing the reduction gearbox upper shell 123 on the motor upper end cover 20, the motor upper end cover 20 and the reduction gearbox upper shell 123 can have good coaxiality, and then the reduction gearbox upper shell 123 can have good coaxiality with the motor shaft 112. On this basis, the gear assemblies 124 circumferentially restricted by the reduction gearbox upper shell 123, such as the sun gear, planetary gear set and inner ring gear, can have good coaxiality, which can make the teeth mesh more uniform, reduce the vibration impact of the gears, and mesh more smoothly, so that the gearbox operates with less noise, less wear and longer life.

[0063] The technical solutions protected by this utility model are not limited to the above-described 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 falls within the scope of protection of this utility model. Although the above description of this utility model has been provided in detail using general instructions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on this utility model. Therefore, such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A noise-reducing food processing machine, comprising a main machine and a drive assembly disposed in the main machine, wherein the drive assembly comprises a motor and a reduction gearbox assembly fixed above the motor, characterized in that: The main unit includes a shell, a sound insulation cover flexibly mounted on the shell is provided in the shell, the motor and the reduction gearbox assembly are flexibly mounted in the sound insulation cover, an opening is provided on the top of the sound insulation cover for the output part of the drive assembly to extend out, and a flexible sound insulation sleeve is sandwiched between the sound insulation cover and the reduction gearbox assembly.

2. A noise-reducing food processor according to claim 1, characterized in that: A first mounting hole is provided at the upper end of the soundproof cover, and a first screw column extending downward is provided on the shell. The first screw column is passed through the first mounting hole, and a first shock-absorbing pad is provided between the first screw column and the first shock-absorbing pad.

3. The noise-reducing food processor according to claim 1, characterized in that: The bottom of the soundproof cover is provided with a convex rib, and a flexible pad is sleeved on the outer side of the convex rib so as to flexibly abut against the bottom of the shell through the flexible pad.

4. The noise-reducing food processor according to claim 1, characterized in that: The sound insulation cover includes an upper cover and a lower cover, the motor is provided with a second mounting hole, one of the upper cover and the lower cover is provided with a second screw column, the second screw column is passed through the second mounting hole and a second shock-absorbing pad is provided between the two.

5. A noise-reducing food processor according to claim 4, characterized in that: One of the upper cover and the lower cover is provided with a second screw column, and the other is provided with an assembly hole. The second screw column passes through the second mounting hole and penetrates into the assembly hole. The upper end of the second shock-absorbing pad isolates the motor from the upper cover, and the lower end of the second shock-absorbing pad isolates the motor from the lower cover.

6. The noise-reducing food processor according to claim 1, characterized in that: The upper end of the sound insulation sleeve is provided with a sealing rib abutting against the inner wall of the sound insulation cover.

7. The noise-reducing food processor according to claim 1, characterized in that: An annular positioning portion is protruded from the outer wall of the sound insulation sleeve, and the positioning portion abuts against the inner wall of the sound insulation cover.

8. The noise-reducing food processor according to claim 1, characterized in that: The reduction gearbox assembly includes a reduction gearbox housing, a gear assembly arranged in the reduction gearbox housing, and an output portion arranged above the gear assembly. The sound insulation sleeve completely wraps the reduction gearbox housing in the axial direction.

9. The noise-reducing food processor according to claim 1, characterized in that: The top end of the sound insulation sleeve is not lower than the top end of the sound insulation cover.

10. The noise-reducing food processor according to claim 1, characterized in that: The drive assembly includes an upper end cover of the motor, and the motor shaft of the motor is arranged through the upper end cover of the motor. The reduction gear assembly includes a reduction gear upper shell and a gear assembly. The reduction gear upper shell is fixed to the upper side of the upper end cover of the motor so that the reduction gear upper shell and the upper end cover of the motor enclose the gear assembly, and the reduction gear assembly is arranged coaxially with the motor shaft.

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