Food processing machine with tight matching

Abstract

The utility model discloses a tightly matched food processor, which relates to the field of life electric appliances, and comprises a main machine internally provided with a motor and a switch assembly for controlling the food processor to work, the switch assembly comprises a control panel arranged in the machine shell, a key which is movably clamped with the control panel in the axial direction and penetrates out of the mounting hole and a rotary knob arranged on the outer side of the key in a sleeving mode, the rotary knob and the key are exposed out of the machine shell, and an elastic piece is further clamped between the rotary knob and the key so that the rotary knob can be driven to be attached to the machine shell, and it is guaranteed that the machine shell and the rotary knob are matched tightly; the situation that external dirt, especially slurry and the like enter the main machine through a gap between the machine shell and the rotary knob, and consequently electric appliance parts and the like in the main machine are affected with damp, work insensitively and even are short-circuited and invalid is effectively avoided, protection of all the parts in the main machine is achieved, and the service life of the food processor is prolonged. And meanwhile, the consistency of the appearance of the whole machine can be ensured, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a food processing machine with a tight fit. Background Technology

[0002] Existing food processors typically include a cup containing a stirring element and a motor connected to the stirring element. When using the food processor, the user places ingredients into the cup, and the stirring element rotates at high speed driven by the motor to process the ingredients. However, users may add different ingredients depending on the selection, and a single ingredient processing program cannot meet the needs of processing multiple ingredients. With the evolution of food processor technology, food processors are now equipped with various ingredient processing programs. For example, users can select a soy milk processing mode when making soy milk, and a meat grinding mode when grinding meat, meeting different user needs. For instance, the applicant's earlier patent application CN202120751464.1 discloses a waterproof food processor with a control board inside the main unit and a corresponding knob and button structure on the outside. Users can select functions using the knob and buttons, satisfying their usage needs. To achieve control via knobs and buttons, buttons are typically designed to axially engage with the control panel, with the knob mounted on the outside of the button. A spring is also installed between the button and the control panel to allow the button to automatically spring back after being pressed. Due to assembly and manufacturing errors, a certain gap inevitably exists between the knob and the main unit's casing. If the user accidentally adds too much food to the cup, the liquid will overflow and flow downwards, entering the main unit through the gap between the knob and the casing. This can cause the electrical components inside the main unit to become damp, malfunction, or even short-circuit and fail, severely impacting the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a food processing machine with a tight fit, in order to solve the problem that after the knobs and buttons controlling the operation of existing food processing machines are assembled, gaps may exist between the knobs and the machine housing due to assembly errors and production errors. This allows slurry or other substances to enter the main unit through the gaps, which in turn causes the motor components and other parts to become damp and fail.

[0004] To achieve the above objectives, this utility model provides a tightly fitted food processing machine, including a main unit with a motor inside and a switch assembly for controlling the operation of the food processing machine. The main unit includes a housing with mounting holes. The switch assembly includes a control board inside the housing, a button that is axially engaged with the control board and extends through the mounting holes, and a knob sleeved on the outside of the button. The knob and button are exposed outside the housing, and an elastic element is clamped between the knob and the button to drive the knob to fit against the housing.

[0005] By incorporating buttons and knobs mounted on the outside of the buttons, both exposed within the housing, users can select functions using the knobs and buttons, satisfying their needs. A spring-loaded element is also clamped between the knob and button. After the button is axially engaged with the control plate, it is limited by the plate. When the spring-loaded element exerts an outward force on the button, the control plate restricts its position, preventing it from dislodging. Simultaneously, the spring-loaded element, when pressed against the button, exerts an inward force on the knob, pushing it into contact with the housing. This ensures a tight fit between the housing and the knob, effectively preventing gaps that could allow external contaminants, especially liquids, to enter the machine. Such gaps could lead to moisture damage, malfunction, or even short circuits in the internal electrical components, protecting the machine's internal parts, extending its lifespan, maintaining a consistent overall appearance, and enhancing the user experience.

[0006] In a preferred embodiment of a tightly fitted food processing machine, the knob has an annular groove with an opening facing outwards, and the button has a pressing part exposed to the outside, the pressing part having an inwardly extending ring rib that can extend into the annular groove.

[0007] By providing an annular groove with an opening facing outwards on the knob, and a pressing part exposed to the outside with an inwardly extending annular rib on the pressing part, the elastic element can abut against the inner side of the annular rib, thereby achieving radial limiting of the annular rib. This improves the stability of the connection between the button and the elastic element, preventing displacement of the elastic element during knob rotation and button pressing, which could lead to unstable contact between the elastic element and the button. At the same time, the annular rib can extend into the annular groove, allowing the button to be guided by the cooperation between the annular rib and the annular groove when pressed inwards, making its axial reciprocating motion smoother and preventing the button from wobbling when pressed, which could cause it to jam.

[0008] In a preferred embodiment of a tightly fitted food processing machine, the pressing part further includes a pressing plate connected to the ring rib, and an annular limiting groove is formed between the pressing plate and the ring rib, with the elastic element confined within the annular limiting groove.

[0009] This design ensures that the elastic element is confined within the annular groove, guaranteeing the stability of the connection between the elastic element and the knob. It prevents displacement of the elastic element during knob rotation and button pressing, which could lead to unstable contact between the elastic element and the knob, resulting in the knob not fitting tightly against the housing. This ensures a tight fit between the knob and the housing. Meanwhile, the other end is located within the annular limiting groove, allowing the elastic element to achieve dual radial and inward limiting through the annular limiting groove. This further enhances the stability of the connection between the elastic element and the button, thereby further improving the reliability of the button's movement.

[0010] In a preferred embodiment of a tightly fitted food processing machine, the button includes a pressing part exposed outside the housing and a snap-fit ​​part connected to the pressing part and located inside the housing. The snap-fit ​​part is provided with an inwardly extending first buckle, and the inner side wall of the inner cylinder is provided with an inner snap-fit ​​groove that engages with the first buckle, and the inner snap-fit ​​groove extends along the pressing direction of the button.

[0011] By providing an inwardly extending first buckle in the snap-fit ​​part and an inner groove on the inner side wall of the inner cylinder that engages with the first buckle, the button is snapped into place by the first buckle and the inner groove, thereby achieving axial positioning of the button by the control board. At the same time, the inner groove extends along the button pressing direction, so that while the button is snapped into place by the inner groove, it can also achieve axial reciprocating motion through the inner groove, ensuring the normal operation of the button.

[0012] In a preferred embodiment of a tightly fitted food processing machine, the knob includes a body exposed outside the housing and a fixed seat connected to the body and located inside the housing. The fixed seat is provided with an inwardly extending second buckle, and the outer wall of the outer cylinder is provided with an outer groove that engages with the second buckle.

[0013] By designing the knob to include a body exposed outside the housing and a mounting base connected to the body and located inside the housing, the body can be secured to the housing via the mounting base, ensuring the stability of the knob's engagement with the housing. Simultaneously, the mounting base has an inwardly extending second latch, and the outer wall of the outer cylinder has an external groove that engages with the second latch. This allows torque to be transmitted from the body to the mounting base when the user rotates it. The mounting base then transmits torque through the engagement of the second latch and the external groove. This achieves both the engagement of the knob and the encoder and the transmission of torque, providing a dual-purpose design and enhancing the functionality of the mounting base.

[0014] In a preferred embodiment of a tightly fitted food processing machine, the outer wall of the outer cylinder is further provided with a guide groove extending axially, and the fixed seat is further provided with a guide protrusion that engages with the guide groove.

[0015] By providing an axially extending guide groove on the outer wall of the outer cylinder, and a guide protrusion that engages with the guide groove on the fixing seat, the fixing seat and the outer cylinder can not only engage and transmit torque through the engagement of the second buckle and the outer buckle groove, but also transmit torque through the engagement of the guide protrusion and the guide groove, thus dispersing the torque and preventing the second buckle from breaking due to prolonged stress. This improves the stability of the knob's operation and extends its service life.

[0016] In a preferred embodiment of a tightly fitted food processing machine, the housing includes an outer shell and a panel, the housing having a mounting opening for fixing the panel, and a switch assembly fixed to the panel.

[0017] The housing is designed to include an outer shell and a panel. The housing has a mounting port for fixing the panel. The switch assembly is fixed to the panel. Compared with fixing the switch assembly directly to the outer shell, the switch assembly can be fixed to the panel as one piece before being fixed to the outer shell. This avoids the inconvenience of installation due to the limited space inside the housing, making assembly more convenient and faster, and helping to improve assembly efficiency. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a food processing machine in one embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional schematic diagram of a food processing machine according to one embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the switch assembly and other components in one embodiment of the present invention;

[0022] Figure 4 This is an exploded view of the switch assembly and housing in one embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the knob and buttons in one embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the control board in one embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the outer shell in one embodiment of the present invention.

[0026] List of components and reference numerals:

[0027] 1-Main unit, 11-Outer shell, 111-Mounting port, 112-Mounting slot; 2-Panel, 21-Mounting buckle; 3-Button, 31-Ring rib, 32-Annular limiting groove, 33-Pressing part, 34-Snap-fit ​​part, 341-First buckle; 4-Knob, 41-Annular groove, 42-Body, 43-Fixing base, 431-Second buckle, 432-Guide protrusion; 5-Control board, 51-Encoder, 511-Inner cylinder, 5111-Inner slot, 512-Outer cylinder, 5121-Outer slot, 5122-Guide groove; 6-Motor; 7-Elastic element. Detailed Implementation

[0028] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0029] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may 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.

[0030] like Figures 1 to 7 As shown, this utility model provides a food processing machine with a tight fit, including a main unit 1 with a motor 6 inside and a switch assembly for controlling the operation of the motor 6. The main unit 1 includes a housing with mounting holes. The switch assembly includes a control board 5 inside the housing, a button 3 that is axially movable and snapped into the control board 5 and extends through the mounting holes, and a knob 4 sleeved on the outside of the button 3. The knob 4 and the button 3 are exposed outside the housing, and an elastic element 7 is also clamped between the knob 4 and the button 3 to drive the knob 4 to fit against the housing.

[0031] By setting up button 3 and knob 4 sleeved on the outside of button 3, with knob 4 and button 3 exposed outside the machine casing, users can select functions by using knob 4 and button 3 when using the food processor, thus meeting the user's needs. Meanwhile, an elastic element 7 is also clamped between the knob 4 and the button 3. After the button 3 is axially engaged with the control plate 5, the button 3 is limited by the control plate 5. When the elastic element 7 exerts an outward force on the button 3, the control plate 5 can restrict the position of the button 3 and prevent the button 3 from coming out. At the same time, after the elastic element 7 abuts against the button 3, it will exert an inward force on the knob 4, thereby pushing the knob 4 to fit against the housing, ensuring a tight fit between the housing and the knob 4. This effectively prevents external dirt, especially slurry, from entering the main unit 1 through gaps between the housing and the knob 4, which could cause the electrical components inside the main unit 1 to become damp, malfunction, or even short-circuit and fail. This protects the components inside the main unit 1, extends the service life of the food processor, and also ensures the consistency of the overall appearance of the machine, improving the user experience.

[0032] As a preferred embodiment of this application, such as Figure 3 As shown, the knob 4 has an annular groove 41 with the opening facing outward, and the button 3 has a pressing part 33 exposed to the outside. The pressing part 33 has an inwardly extending ring rib 31, which can extend into the annular groove 41.

[0033] By providing an annular groove 41 with an opening facing outwards for the knob 4, and a pressing part 33 exposed to the outside, with an inwardly extending annular rib 31 for the pressing part 33, the elastic element 7 can abut against the inner side of the annular rib 31, thereby achieving radial limiting of the annular rib 31. This improves the stability of the connection between the button 3 and the elastic element 7, preventing the elastic element 7 from shifting during the rotation of the knob 4 and the pressing of the button 3, which could lead to unstable contact between the elastic element 7 and the button 3. At the same time, the annular rib 31 can extend into the annular groove 41, so that when the button 3 is pressed inwards, the engagement between the annular rib 31 and the annular groove 41 can guide the button 3, making its axial reciprocating motion smoother and preventing the button 3 from wobbling when pressed, which could cause it to jam.

[0034] Furthermore, such as Figure 3 As shown, the pressing part 33 also includes a pressing plate connected to the ring rib 31, and an annular limiting groove 32 is formed between the pressing plate and the ring rib 31, and the elastic element 7 is limited within the annular limiting groove 32.

[0035] This design ensures that the elastic element 7 is confined within the annular groove 41, guaranteeing the stability of the connection between the elastic element 7 and the knob 4. It prevents displacement of the elastic element 7 during knob 4 rotation and button 3 pressing, thus avoiding instability in the connection between the elastic element 7 and the knob 4 and preventing the knob 4 from fitting tightly against the housing. This ensures a tight fit between the knob 4 and the housing. Simultaneously, the other end is located within the annular limiting groove 32, allowing the elastic element 7 to achieve dual radial and inward / outward limiting through the annular limiting groove 32. This further enhances the stability of the connection between the elastic element 7 and the button 3, thereby further improving the reliability of the button 3's movement.

[0036] It should be noted that this application does not specifically limit the structure of the elastic element 7. As one preferred embodiment of this application, such as... Figure 3 As shown, the elastic element 7 is a spring with one end abutting against the annular groove 41 and the other end abutting against the annular limiting groove 32.

[0037] As a preferred embodiment of this application, such as Figure 6 As shown, the control board 5 is equipped with a cylindrical encoder 51. The encoder 51 includes an inner cylinder 511 and an outer cylinder 512 that is sleeved on the outside of the inner cylinder 511 and can rotate. The button 3 is axially engaged with the inner cylinder 511, and the knob 4 can drive the outer cylinder 512 to rotate.

[0038] Furthermore, such as Figure 5 , Figure 6 As shown, button 3 includes a pressing part 33 exposed outside the housing and a snap-fit ​​part 34 connected to the pressing part 33 and located inside the housing. The snap-fit ​​part 34 is provided with a first buckle 341 extending inward. The inner side wall of the inner cylinder 511 is provided with an inner groove 5111 that engages with the first buckle 341, and the inner groove 5111 extends along the pressing direction of button 3.

[0039] By providing an inwardly extending first buckle 341 to the snap-fit ​​part 34, and an inner groove 5111 that engages with the first buckle 341 on the inner side wall of the inner cylinder 511, the button 3 is snapped into place by the first buckle 341 and the inner groove 5111, thereby achieving axial positioning of the button 3 by the control board 5. At the same time, the inner groove 5111 extends along the pressing direction of the button 3, so that while the button 3 is snapped into place by the inner groove 5111, it can also achieve axial reciprocating motion through the inner groove 5111, ensuring the normal operation of the button 3.

[0040] As a preferred embodiment of this implementation, such as Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the knob 4 includes a body 42 exposed outside the housing and a fixing seat 43 connected to the body 42 and located inside the housing. The fixing seat 43 is provided with a second buckle 431 extending inward, and the outer wall of the outer cylinder 512 is provided with an outer groove 5121 that engages with the second buckle 431.

[0041] By configuring the knob 4 to include a body 42 exposed outside the housing and a fixing seat 43 connected to the body 42 and located inside the housing, the body 42 can be fixed to the housing through the fixing seat 43, ensuring the stability of the engagement between the knob 4 and the housing. Simultaneously, the fixing seat 43 is provided with an inwardly extending second latch 431, and the outer wall of the outer cylinder 512 is provided with an outer groove 5121 that engages with the second latch 431. This allows the torque on the body 42 to be transmitted to the fixing seat 43 when the user rotates the body 42. The fixing seat 43 then transmits torque through the engagement of the second latch 431 and the outer groove 5121. This achieves both the engagement of the knob 4 and the encoder 51 and the torque transmission, providing a dual-purpose function and enhancing the functionality of the fixing seat 43.

[0042] Furthermore, such as Figure 5 , Figure 6 As shown, the outer wall of the outer cylinder 512 is also provided with a guide groove 5122 extending along the axial direction, and the fixed seat 43 is also provided with a guide protrusion 432 that is inserted and engaged with the guide groove 5122.

[0043] By providing an axially extending guide groove 5122 on the outer side wall of the outer cylinder 512, and a guide protrusion 432 that engages with the guide groove 5122, the fixed seat 43 and the outer cylinder 512 can not only achieve engagement and torque transmission through the engagement of the second buckle 431 and the outer buckle groove 5121, but also achieve torque transmission and torque distribution through the engagement of the guide protrusion 432 and the guide groove 5122. This avoids the second buckle 431 from breaking due to prolonged stress, improves the stability of the knob 4's operation, and extends its service life.

[0044] It should be noted that this application does not specifically limit the method of fixing the switch assembly to the housing. As one preferred embodiment of this application, such as... Figure 2 , Figure 7 As shown, the housing includes an outer shell 11 and a panel 2. The housing has a mounting port 111 for fixing the panel 2, and the switch assembly is fixed to the panel 2.

[0045] The housing is configured to include an outer shell 11 and a panel 2. The housing has a mounting port 111 for fixing the panel 2. The switch assembly is fixed to the panel 2. Compared with the method of fixing the switch assembly directly to the outer shell 11, the switch assembly can be fixed to the panel 2 as one piece before being fixed to the outer shell 11. This avoids the situation where the internal space of the housing is small and the installation is inconvenient, making the assembly more convenient and faster, and helping to improve the assembly efficiency.

[0046] Furthermore, such as Figure 5 , Figure 7 As shown, panel 2 is provided with mounting buckle 21 extending toward mounting opening 111, and mounting opening 111 is provided with mounting slot 112 that engages with mounting buckle 21.

[0047] By setting mounting buckles 21 and mounting slots 112 that engage with each other on the panel 2 and the mounting port 111, the panel 2 can be installed and fixed by simple engagement, simplifying the assembly steps and helping to improve its installation efficiency.

[0048] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all 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 tightly fitted food processing machine, comprising a main unit with a built-in motor and a switching assembly for controlling the operation of the food processing machine, characterized in that, The main unit includes a housing with mounting holes. The switch assembly includes a control board disposed inside the housing, a button that is axially movable and engages with the control board and extends through the mounting holes, and a knob sleeved on the outside of the button. The knob and the button are exposed outside the housing, and an elastic element is also clamped between the knob and the button to drive the knob to fit against the housing.

2. The food processing machine with a tight fit according to claim 1, characterized in that, The knob has an annular groove with an opening facing outwards, and the button has a pressing part exposed to the outside. The pressing part has an inwardly extending ring rib that can extend into the annular groove.

3. The food processing machine with a tight fit according to claim 2, characterized in that, The pressing part further includes a pressing plate connected to the ring rib, and an annular limiting groove is formed between the pressing plate and the ring rib, and the elastic element is limited within the annular limiting groove.

4. The food processing machine with a tight fit according to claim 3, characterized in that, The elastic element is a spring with one end abutting against the annular groove and the other end abutting against the annular limiting groove.

5. A tightly fitted food processing machine according to claim 1, characterized in that, The control board is equipped with a cylindrical encoder, which includes an inner cylinder and an outer cylinder that is sleeved on the outside of the inner cylinder and can rotate. The button is axially engaged with the inner cylinder, and the knob can drive the outer cylinder to rotate.

6. A tightly fitted food processing machine according to claim 5, characterized in that, The button includes a pressing part exposed outside the housing and a snap-fit ​​part connected to the pressing part and located inside the housing. The snap-fit ​​part is provided with a first buckle extending inward. The inner side wall of the inner cylinder is provided with an inner groove that engages with the first buckle, and the inner groove extends along the pressing direction of the button.

7. A tightly fitted food processing machine according to claim 5, characterized in that, The knob includes a body exposed outside the housing and a fixing seat connected to the body and located inside the housing. The fixing seat is provided with an inwardly extending second buckle, and the outer side wall of the outer cylinder is provided with an outer groove that engages with the second buckle.

8. A tightly fitted food processing machine according to claim 7, characterized in that, The outer wall of the outer cylinder is also provided with a guide groove extending along the axial direction, and the fixed seat is also provided with a guide protrusion that is inserted and engaged with the guide groove.

9. A tightly fitted food processing machine according to claim 1, characterized in that, The housing includes an outer shell and a panel. The outer shell has a mounting port for fixing the panel, and the switch assembly is fixed to the panel.

10. A tightly fitted food processing machine according to claim 9, characterized in that, The panel is provided with a mounting buckle extending toward the mounting opening, and the mounting opening is provided with a mounting slot that engages with the mounting buckle.

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