A meat mincer

Abstract

The utility model belongs to kitchen appliance technical field discloses a meat grinder, including stirring cup, the stirring piece in stirring cup, install the host computer on stirring cup, the host computer includes casing, motor, circuit board, mechanical button, return spring, the casing top wall is equipped with mounting hole and trigger hole, mechanical button is equipped with buckle trigger rod, the edge of buckle and mounting hole is connected, the flexible isolating pad that still sets up both isolation of circuit board and casing top wall between is between both isolation, isolating pad includes the trigger portion below trigger hole and the isolation portion below mounting hole, circuit board convex has mechanical switch, trigger rod presses trigger portion to trigger mechanical switch action, the isolation portion is kept off between circuit board and buckle, sets up the movable cavity that buckle moves between isolation portion and casing top wall. Realize circuit board waterproof through isolating pad, and form physical isolation between buckle and circuit board, effectively avoid the risk that buckle directly hits or oppresses below circuit board, thereby protecting circuit board.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a meat grinder. Background Technology

[0002] Patent CN217066148U discloses a food processor with a button seal between the button and the electrical on / off switch. The elastic edge of the button seal abuts against the wall of the button hole to achieve a seal. When the button is pressed down, the contact part of the button seal presses down simultaneously, triggering the electrical on / off switch to turn the food processor on or off. When the button is released, the elastic part of the button seal undergoes elastic recovery deformation, pushing the button back to its original position within the button hole. Therefore, the button's movement and reset rely on the local elastic deformation of the button seal. Frequent button operation by the user can affect the elasticity of the button seal, potentially causing the elastic edge to loosen and the seal to fail, or resulting in slow button reset or failure to return to the initial position.

[0003] Some meat grinders now feature locking holes on the top of the main unit and latches on the buttons. These latches engage with the locking holes to prevent the buttons from detaching from the main unit. A return spring is placed between the buttons and the main unit to ensure smooth and accurate button reset. However, when a circuit board is located on the top of the main unit, the latches can move along the locking holes during button movement. If there is an assembly error between the button and the main unit, or if the button is pressed excessively, the latches can directly press against the circuit board, causing components on the circuit board to loosen or even damaging the circuit board. Utility Model Content

[0004] This utility model provides a meat grinder, which is based on a circuit board set on the top of the main unit and mechanical buttons on the circuit board. In addition to making the circuit board in the main unit waterproof, it further solves the technical problem that excessive pressing of the mechanical buttons will damage the circuit board.

[0005] The technical solution adopted in this utility model is as follows:

[0006] This utility model provides a meat grinder, including a mixing cup, a mixing component located inside the mixing cup, and a main unit mounted on the mixing cup. The main unit includes a housing, a motor located inside the housing, a circuit board horizontally positioned between the top wall of the housing and the motor, and a mechanical button movably mounted above the top wall of the housing. A return spring abuts against the top wall of the housing. The top wall of the housing has a mounting hole and a trigger hole. The mechanical button has a buckle extending into the mounting hole and a trigger rod extending into the trigger hole. The buckle engages with the edge of the mounting hole. A flexible isolation pad is also provided between the circuit board and the top wall of the housing to isolate the two. The isolation pad includes a trigger part located below the trigger hole and an isolation part located below the mounting hole. A mechanical switch protrudes from the circuit board. The trigger rod presses against the trigger part to trigger the mechanical switch. The isolation part blocks the circuit board and the buckle, and a movable cavity is provided between the isolation part and the top wall of the housing for the buckle to move.

[0007] This invention utilizes an isolation pad between the circuit board and the top wall of the housing to separate them. If water accidentally enters through the mounting holes and trigger holes on the top wall of the housing, the isolation pad acts as a barrier, preventing the water from flowing directly to the circuit board, thus waterproofing the circuit board. Simultaneously, the isolation pad includes a trigger portion below the trigger hole and an isolation portion below the mounting hole. By providing the isolation portion, the circuit board and the latch are separated. When the user excessively presses the mechanical button, the latch will preferentially contact and abut against the isolation portion. The isolation portion, through its flexible deformation, provides effective cushioning, thus creating physical isolation between the latch and the circuit board. Furthermore, the isolation portion can compensate for manufacturing tolerances of the latch, effectively avoiding the risk of the latch directly impacting or pressing the circuit board below, thereby protecting the circuit board. It also prevents the latch from breaking due to hard impacts with the circuit board, improving the reliability of the mechanical button's positioning within the housing. By providing the trigger portion, the trigger rod presses against the trigger portion to activate the mechanical switch. In addition to waterproofing the mechanical switch, it achieves a smooth and flexible trigger feel, improving the user's operating experience. The trigger section can compensate for assembly tolerances that occur during the assembly of the mechanical button and the housing by utilizing its own deformation, thereby achieving stable and accurate state switching of the mechanical switch. At the same time, the trigger section can also act as a buffer, protecting the mechanical switch from damage caused by frequent pressing and improving its service life.

[0008] In a preferred embodiment, the top wall of the housing is provided with a reinforcing rib that surrounds the trigger hole and the mounting hole together. The isolation pad also includes an extension connected to the isolation portion and located below the reinforcing rib. The circuit board is fixedly connected to the top wall of the housing to clamp the extension between the reinforcing rib and the circuit board.

[0009] Because the reinforcing ribs surround both the trigger hole and the mounting hole, and the extension is connected to the isolation part and located below the reinforcing ribs, the isolation pad formed by the trigger part, the mounting part, and the extension part effectively and completely shields all openings on the top wall of the housing, completely blocking water flow from the trigger hole and the mounting hole, thus providing comprehensive protection for the circuit board. Simultaneously, the circuit board is fixedly connected to the top wall of the housing to clamp the extension part between the reinforcing ribs and the circuit board, preventing the isolation pad from shifting. Even after prolonged use, the trigger part and the isolation part remain accurately positioned, ensuring accurate triggering of the mechanical switch and effective protection against the clips and the circuit board. The isolation pad is fixed between the circuit board and the top wall of the housing without the need for additional fixing parts, simplifying the fixing process and facilitating assembly.

[0010] In a preferred embodiment, the top wall of the housing is further provided with an isolation rib, the isolation rib being separated between the trigger hole and the mounting hole and abutting against the isolation part, the isolation rib being connected to the surrounding rib to enclose and form a sealed movable cavity.

[0011] Because the snap-fit ​​mechanism requires an enlarged locking position for engagement, and the mounting hole needs to allow the snap-fit ​​to pass through for assembly of the mechanical button and the top wall of the housing, a significant gap exists between the snap-fit ​​and the mounting hole. In contrast, only a small clearance is needed between the trigger hole and the trigger pin for smooth movement. This creates a considerable risk of water leakage at the mounting hole location. By using an insulating rib to separate the trigger hole and the mounting hole, and by connecting the insulating rib to the surrounding rib to form a sealed active cavity, when water enters through the mounting hole, the incoming water is temporarily contained within the sealed active cavity, preventing it from flowing along the insulating part to the trigger part and causing the mechanical switch to malfunction. The water temporarily contained within the active cavity, being confined to a small area and close to the mounting hole, can also be more directly shaken out when the user shakes the main unit, or evaporate more quickly. This not only waterproofs the circuit board but also prevents water from accumulating above the insulating pad for extended periods, avoiding odor problems.

[0012] In a preferred embodiment, the isolation portion is connected to the extension portion, and a buffer cavity is formed between the isolation portion and the circuit board, the buffer cavity being located below the movable cavity.

[0013] Because the extension reliably fixes the isolation pad between the circuit board and the top wall of the housing, there is no need to retain a fixed position for the isolation part and the trigger part. While ensuring accurate positioning, it also facilitates the suspension of the isolation part and the circuit board, forming a buffer cavity between the isolation part and the circuit board. The buffer cavity is located below the movable cavity. Therefore, if the user excessively presses the mechanical switch, causing the mechanical switch to touch the isolation part, the isolation part first absorbs the impact force through its own deformation. When the isolation part is insufficient to completely absorb the impact force and moves down with the latch, the buffer cavity further absorbs the impact force, thereby greatly avoiding the problem of the latch and the isolation part pressing against the circuit board and causing damage to the circuit board.

[0014] In a preferred embodiment, the extension includes a sleeve wall extending to engage with the surrounding reinforcement, and the top wall of the housing is further provided with a limiting post near the surrounding reinforcement, the sleeve wall being limited between the limiting post and the surrounding reinforcement.

[0015] By providing a sleeve wall extending to engage with the surrounding rib, the isolation pad and the top wall of the housing can be pre-assembled before fixing the isolation pad. Then, the top wall of the housing is fixed to the circuit board, achieving final fixation of the isolation pad, simplifying the assembly process. Simultaneously, the sleeve wall and the surrounding rib achieve radial limiting of the isolation pad, preventing positional displacement and ensuring reliable isolation and protection of the circuit board. The triggering part can be activated by a trigger rod pressing against the mechanical switch. By setting a limiting post, the inner circumference of the sleeve wall is limited by the surrounding rib, and the outer circumference of the sleeve wall is limited by the limiting post, achieving a more reliable limiting effect. Of course, the limiting post can be a solid post or a stud that can be engaged with a screw to lock the circuit board to the top wall of the housing. Therefore, the limiting post also serves as a fixing point, achieving structural reuse and compactness.

[0016] In a preferred embodiment, the trigger portion includes a recess and a protrusion located in the central region of the recess, the protrusion corresponding to the contact rod of the mechanical switch, and the recess communicating below the trigger hole.

[0017] By setting a recessed groove and a raised portion, with the raised portion corresponding to the contact rod of the mechanical switch, when the user presses down the mechanical button, the trigger rod of the mechanical button presses down the raised portion to trigger the mechanical switch. By setting a recessed groove connected below the trigger hole, water flowing into the trigger hole can be collected, preventing water from flowing to other places. When the user shakes the main unit, the water temporarily stored in the recessed groove can be more directly shaken out of the main unit, and it can also evaporate more quickly. This not only waterproofs the circuit board and mechanical switch, but also prevents water from lingering on the isolation pad for a long time, avoiding problems such as odor. In addition, because the outer periphery of the raised portion forms a depression, the raised portion is easy to deform, reducing the downward pressure resistance, making it easier and smoother for the user to press the mechanical button.

[0018] In a preferred embodiment, the trigger portion arches upward relative to the isolation portion and forms a limiting cavity into which the mechanical switch extends. The top wall of the housing is provided with an isolation rib located on the outer periphery of the trigger hole, and the isolation rib is radially limited on the outer periphery of the limiting cavity.

[0019] By arching the trigger portion upwards relative to the isolation portion, a sufficiently large movable cavity is formed between the isolation portion and the top wall of the housing. Simultaneously, the trigger portion forms a limiting cavity that encloses and avoids the mechanical switch, resulting in a compact and fully utilized height space between the circuit board and the top wall of the housing. This avoids unnecessary increases in the height of the main unit, achieving miniaturization. Furthermore, an isolation rib is provided on the top wall of the housing, located around the trigger hole. This isolation rib is radially limited around the limiting cavity, preventing radial displacement of the isolation pad and ensuring precise positioning of the isolation portion and the trigger portion.

[0020] In a preferred embodiment, when the mechanical switch is not pressed, the top end of the mechanical switch is in clearance fit with the top wall of the limiting cavity.

[0021] By fitting the top of the mechanical switch with the top wall of the limiting cavity, the mechanical switch is prevented from being held down by excessive weight when the mechanical button is not under force, i.e., when the host is idle and the mechanical button moves toward the mechanical switch without being pressed. This also prevents the mechanical switch from being accidentally triggered when the user touches the mechanical button slightly, making it safer to use and extending the service life of the mechanical switch.

[0022] In a preferred embodiment, the mounting hole includes a first mounting hole and a second mounting hole, which are symmetrically arranged on both sides of the trigger hole. The isolation rib includes a first isolation rib that isolates the first mounting hole and the trigger hole and a second isolation rib that isolates the second mounting hole and the trigger hole.

[0023] By setting the first mounting hole and the second mounting hole, the first and second latches can be set on the mechanical button to achieve multi-part locking and limiting of the mechanical button, effectively preventing the mechanical button from detaching from the top wall of the housing. At the same time, the first mounting hole and the second mounting hole are symmetrically arranged on both sides of the trigger hole, which has the effect of limiting the sway on both sides of the trigger hole when the mechanical button is pressed, so that the mechanical button is pressed down straight and the force is evenly distributed, and the trigger rod accurately triggers the mechanical switch.

[0024] In a preferred embodiment, the isolation portion is attached to the top of the circuit board.

[0025] The isolation part is attached to the top of the circuit board. While achieving the isolation effect between the clip and the circuit board, it also reduces the height difference between the top wall of the housing and the circuit board. Furthermore, the attachment prevents wrinkles from appearing during the installation of the isolation pad, which is conducive to the flat assembly of the isolation part and the circuit board.

[0026] In a preferred embodiment, the isolation portion is an isolation sheet integrally formed on the outer periphery of the trigger portion, and the isolation sheet covers the entire area below the mounting hole.

[0027] By integrally molding the isolation part onto the outer periphery of the trigger part, the molding process is simple and the processing cost is low. The isolation part is an isolation sheet that covers the entire area below the mounting hole, achieving a more comprehensive waterproof and isolation effect for the mounting hole.

[0028] In a preferred embodiment, the top wall of the housing includes a mounting platform on which a touch panel is mounted and a mounting recess that is recessed relative to the mounting platform. The mounting hole and the trigger hole are located on the mounting recess, and the mechanical button is mounted above the mounting recess. When the mechanical button is not under force, the mechanical button is flush with the top of the touch panel.

[0029] By setting up an installation platform and mounting base, the touch panel and mechanical buttons are integrated, while making reasonable and compact use of the space on the top wall of the housing. The touch panel allows users to select functions by touch, while the mechanical buttons are used for pressing to control the duration of operation, providing users with multiple selectable operation methods and improving the user experience. The mounting base ensures that when the mechanical buttons are not under pressure, they are flush with the top of the touch panel, resulting in a flat top for the main unit, an aesthetically pleasing product, and preventing accidental touches due to abrupt button protrusion, thus ensuring operational safety. Attached Figure Description

[0030] 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:

[0031] Figure 1 This is a schematic diagram of the structure of a meat grinder in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the host structure in one embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the top wall of the shell in one embodiment of the present invention;

[0034] Figure 4 This is a partial structural cross-sectional view of the host in one embodiment of the present invention;

[0035] Figure 5 This is a cross-sectional view of the top of the host unit in one embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the inverted structure of the top wall of the shell in one embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the isolation pad in one embodiment of the present invention;

[0038] Figure 8 This is a cross-sectional structural diagram of the isolation pad in one embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the assembly of the isolation pad and the top wall of the housing in one embodiment of the present invention.

[0040] List of components and reference numerals:

[0041] 10. Stirring cup; 20. Mechanical button; 21. Snap fastener; 22. Trigger rod; 30. Main unit; 31. Housing; 311. Mounting hole; 3111. First mounting hole; 3112. Second mounting hole; 312. Trigger hole; 313. Surrounding rib; 314. Isolation rib; 315. Limiting post; 32. Motor; 33. Circuit board; 34. Mechanical switch; 35. Movable cavity; 36. Buffer cavity; 40. Return spring; 50. Isolation pad; 51. Isolation part; 52. Trigger part; 53. Extension part; 54. Sleeve wall; 55. Settling groove; 56. Protrusion; 57. Limiting cavity; 60. Touch panel. Detailed Implementation

[0042] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description 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. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0044] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] like Figure 1-9As shown, in one embodiment, this utility model provides a meat grinder, including a mixing cup 10, a mixing element located within the mixing cup 10, and a main unit 30 mounted on the mixing cup 10. The mixing element may be, for example, a mixing blade or a dough mixer. The main unit 30 includes a housing top wall, a motor 32 located within the housing top wall, a circuit board 33 horizontally positioned between the housing top wall and the motor 32, and a mechanical button 20 movably mounted above the housing top wall. A return spring 40 abuts against the mechanical button 20 and the housing top wall. Figure 2 , 3 As shown, the top wall of the housing has mounting holes 311 and trigger holes 312, and a flexible isolation pad 50 is provided between the circuit board 33 and the top wall of the housing to isolate the two. Figure 4 As shown, the mechanical button 20 has a latch 21 that extends into the mounting hole 311 and a trigger rod 22 that extends into the trigger hole 312. The latch 21 engages with the edge of the mounting hole 311. Figure 5 As shown, the isolation pad 50 includes a trigger part 52 located below the trigger hole 312 and an isolation part 51 located below the mounting hole 311. The circuit board 33 is provided with a mechanical switch 34. The trigger rod 22 presses against the trigger part 52 to trigger the mechanical switch 34 to operate. The isolation part 51 is positioned between the circuit board 33 and the buckle 21, and a movable cavity 35 is provided between the isolation part 51 and the top wall of the housing for the buckle 21 to move.

[0048] This embodiment provides an isolation pad 50 between the circuit board 33 and the top wall of the housing to separate them. If water accidentally enters the mounting hole 311 and trigger hole 312 of the top wall of the housing, the isolation pad 50 forms a barrier to prevent the incoming water from flowing directly to the circuit board 33, thereby waterproofing the circuit board 33. Simultaneously, the isolation pad 50 includes a trigger part 52 located below the trigger hole 312 and an isolation part 51 located below the mounting hole 311. By providing the isolation part 51, the isolation part 51 blocks the connection between the circuit board 33 and the clip 2. When the user excessively presses the mechanical button 20, the latch 21 will first contact and abut against the isolation part 51. The isolation part 51 absorbs the impact energy through its own flexible deformation, forming an effective buffer, thereby forming a physical isolation between the latch 21 and the circuit board 33. This effectively avoids the risk of the latch 21 directly hitting or pressing the circuit board 33 below, thus protecting the circuit board 33. At the same time, it also avoids the problem of the latch 21 breaking due to hard collision between the latch 21 and the circuit board 33, improving the limiting reliability of the mechanical button 20 and the top wall of the housing.

[0049] By incorporating a trigger part 52, the trigger rod 22 presses against the trigger part 52 to activate the mechanical switch 34. This achieves a waterproof effect on the mechanical switch 34 while providing a smooth and flexible trigger feel, enhancing the user's operating experience. The trigger part 52 can utilize its own deformation to compensate for assembly tolerances that occur during the assembly of the mechanical button 20 and the top wall of the housing, thereby ensuring stable and accurate state switching of the mechanical switch 34. Simultaneously, the trigger part 52 also acts as a buffer, protecting the mechanical switch 34 from damage caused by frequent pressing and extending its service life.

[0050] It should be noted that this utility model does not limit the connection method between the isolation part and the trigger part. For example, the isolation part 51 can be an isolation sheet integrally formed on the outer periphery of the trigger part 52, covering the entire lower part of the mounting hole 311. By integrally forming the isolation part 51 on the outer periphery of the trigger part 52, the forming process is simple and the processing cost is low. The isolation part 51, as an isolation sheet, covers the entire lower part of the mounting hole 311, achieving a more comprehensive waterproof and isolation effect for the mounting hole 311. Of course, it is understood that the isolation part 51 and the trigger part 52 can also be fixed together by means of bonding or other methods.

[0051] As a preferred option, such as Figure 5 As shown, the trigger portion 52 arches upward relative to the isolation portion 51, forming a limiting cavity 57 into which the mechanical switch 34 extends. By arching the trigger portion 52 upward relative to the isolation portion 51, on the one hand, sufficient height is provided between the isolation portion 51 and the top wall of the housing to form a sufficiently large movable cavity 35. On the other hand, the limiting cavity 57 formed by the trigger portion 52 encloses and avoids the mechanical switch 34, making the height space between the circuit board 33 and the top wall of the housing compact and fully utilized, avoiding unnecessary increases in the height of the main unit 30, and achieving miniaturization of the main unit 30.

[0052] Of course, in reality, the trigger part 52 and the isolation part 51 are connected to a plane. In this way, as long as the distance between the top wall of the housing and the circuit board is increased and the isolation pad is moved down away from the buckle, the isolation protection between the buckle and the circuit board can still be achieved through the isolation part.

[0053] This invention does not limit the method of fixing the isolation pad. In a preferred embodiment, such as... Figure 6 As shown, the top wall of the housing is provided with a surrounding rib 313 that surrounds both the trigger hole 312 and the mounting hole 311, combined with... Figure 4 , 5As shown, the isolation pad 50 also includes an extension 53 connected to the isolation portion and extending to the area below the surrounding rib 313. The circuit board 33 is fixedly connected to the top wall of the housing to clamp the extension 53 between the surrounding rib 313 and the circuit board 33. More preferably, the trigger portion 52 arches upward relative to the isolation portion 51 and forms a limiting cavity 57 into which the mechanical switch 34 extends. The top wall of the housing is provided with an isolation rib 314 located on the outer periphery of the trigger hole 312. The isolation rib 314 is radially limited on the outer periphery of the limiting cavity 57.

[0054] Preferably, when the mechanical switch 34 is not pressed, the top end of the mechanical switch 34 is in clearance fit with the top wall of the limiting cavity 57.

[0055] Because the reinforcing rib 313 surrounds both the trigger hole 312 and the mounting hole 311, and the extension 53 extends below the reinforcing rib 313, the isolation pad 50 formed by the trigger part 52, the mounting part, and the extension 53 more comprehensively and completely covers all openings under the top wall of the housing, completely blocking water flow entering from the trigger hole 312 and the mounting hole 311, thus achieving comprehensive protection for the circuit board 33. Simultaneously, the circuit board 33 is fixedly connected to the top wall of the housing to clamp the extension 53 between the reinforcing rib 313 and the circuit board 33, preventing the isolation pad 50 from shifting. Even after prolonged use, the trigger part 52 and the isolation part 51 remain accurately positioned, ensuring accurate triggering of the mechanical switch 34 and effective protection for the latch 21 and the circuit board 33. The isolation pad 50 is fixed between the circuit board 33 and the top wall of the housing without the need for additional fixing parts, simplifying the fixing process and facilitating assembly. Meanwhile, an isolation rib 314 is provided on the top wall of the housing, located on the outer periphery of the trigger hole 312. The isolation rib 314 is radially limited on the outer periphery of the limiting cavity 57, thereby preventing the isolation pad 50 from radially shifting and ensuring that the positions of the isolation part 51 and the trigger part 52 are accurately maintained.

[0056] By fitting the top of the mechanical switch 34 with the top wall of the limiting cavity 57, the mechanical switch 34 is prevented from being subjected to prolonged pressure due to the excessive weight of the isolation part 51 when the mechanical button is not under force, i.e. when the host is idle. This also prevents the mechanical switch 34 from being accidentally triggered when the user lightly touches the mechanical button 20, making it safer to use and extending the service life of the mechanical switch 34.

[0057] Alternatively, preferably, the isolation portion 51 is connected to the extension portion 53, forming a buffer cavity 36 between the isolation portion 51 and the circuit board 33, with the buffer cavity 36 located below the movable cavity 35.

[0058] Since the extension 53 reliably fixes the isolation pad 50 between the circuit board 33 and the top wall of the housing, it eliminates the need to retain the fixing position of the isolation part 51 and the trigger part 52. While ensuring accurate fixing position, it also facilitates the suspension setting of the isolation part 51 and the circuit board 33. A buffer cavity 36 is formed between the isolation part 51 and the circuit board 33. The buffer cavity 36 is located below the movable cavity 35. Therefore, if the user excessively presses the mechanical switch 34 and the mechanical switch 34 touches the isolation part 51, the isolation part 51 first absorbs the impact force through its own deformation. When the isolation part 51 is insufficient to completely absorb the impact force and moves down with the buckle 21, the setting of the buffer cavity 36 achieves a further absorption effect on the impact force, thereby avoiding the problem of the buckle 21 and the isolation part 51 pressing against the circuit board 33 and causing damage to the circuit board 33 to a greater extent.

[0059] In another preferred embodiment, the isolating part can be attached to the circuit board and fixed by means of adhesive or other methods. The isolating part 51 is attached to the top of the circuit board 33, which not only achieves the isolation effect between the buckle 21 and the circuit board 33, but also shortens the height difference between the top wall of the housing and the circuit board 33. The attachment also avoids wrinkles in the isolation pad 50 during installation, which is conducive to the flat assembly of the isolating part 51 and the circuit board 33.

[0060] like Figure 5 As shown, in a preferred embodiment of the present invention, the top wall of the housing is further provided with an isolation rib 314. The isolation rib 314 is separated between the trigger hole 312 and the mounting hole 311 and abuts against the isolation part 51. The isolation rib 314 is connected with the surrounding rib 313 to form a closed movable cavity 35.

[0061] Because the buckle 21 needs to be enlarged to achieve the snap-fit, and the mounting hole 311 needs to allow the buckle to pass through to assemble the mechanical button 20 with the top wall of the housing, there is a large gap between the buckle 21 and the mounting hole 311. The trigger hole 312 and the trigger post only need a small fit gap to allow the trigger post to move smoothly. This results in a relatively large risk of water leakage at the mounting hole 311 position. By setting an isolation rib 314 to separate the trigger hole 312 and the mounting hole 311, and connecting the isolation rib 314 and the surrounding rib 313 to form a sealed movable cavity 35, when water enters the mounting hole 311, the water will be temporarily stored in the sealed movable cavity 35, and will not continue to flow along the isolation part 51 to the trigger part 52, thus avoiding the risk of the mechanical switch 34 becoming unresponsive. The water temporarily stored in the movable cavity 35 is limited to a small area and close to the mounting hole 311, and can also be more directly shaken out when the user shakes the main unit 30, or evaporate more quickly. This not only makes the circuit board 33 waterproof, but also prevents water from accumulating on the isolation pad 50 for a long time, avoiding problems such as odor.

[0062] Preferably, the mounting hole 311 includes a first mounting hole 3111 and a second mounting hole 3112, which are symmetrically arranged on both sides of the trigger hole 312. The isolation rib 314 includes a first isolation rib 314 that isolates between the first mounting hole 3111 and the trigger hole 312 and a second isolation rib 314 that isolates between the second mounting hole 3112 and the trigger hole 312.

[0063] By setting the first mounting hole 3111 and the second mounting hole 3112, the first latch 21 and the second latch 21 can be set on the mechanical button 20 to achieve multi-part locking and limiting of the mechanical button 20, effectively preventing the mechanical button 20 from falling off the top wall of the housing. At the same time, the first mounting hole 3111 and the second mounting hole 3112 are symmetrically arranged on both sides of the trigger hole 312. When the mechanical button 20 is pressed, it plays a role in limiting the sway on both sides of the trigger hole 312, so that the mechanical button 20 is pressed straight down and evenly subjected to force, and the trigger rod 22 accurately triggers the mechanical switch 34.

[0064] It should be noted that this utility model does not limit the above-described extension structure. For example, in a preferred embodiment, the extension 53 includes a horizontal portion and a sleeve wall 54 extending from the horizontal portion to engage with the surrounding rib 313, wherein the horizontal portion is sandwiched between the surrounding rib 313 and the circuit board 33, and the sleeve wall 54 is sleeved around the outer periphery of the surrounding rib 313. More preferably, as... Figure 6 , Figure 9 As shown, the top wall of the shell is also provided with a limiting post 315 near the surrounding rib 313, and the sleeve wall 54 is limited between the limiting post 315 and the surrounding rib 313.

[0065] By providing a sleeve wall 54 extending to engage with the surrounding rib 313 in the extension portion 53, the isolation pad 50 and the top wall of the housing can be pre-assembled by engaging the sleeve wall 54 of the isolation pad 50 with the surrounding rib 313 before fixing the isolation pad 50. Then, the top wall of the housing is fixed to the circuit board 33 to achieve the final fixation of the isolation pad 50, simplifying the assembly process. At the same time, the engagement of the sleeve wall 54 and the surrounding rib 313 achieves radial limiting of the isolation pad 50, preventing positional displacement and ensuring that the isolation portion 51 and the trigger portion 52 reliably achieve their respective effects. By setting a limiting post 315, the inner peripheral wall of the sleeve wall 54 is limited by the surrounding rib 313, and the outer peripheral wall of the sleeve wall 54 is limited by the limiting post 315, achieving a more reliable limiting effect. Of course, the limiting post 315 can be a solid post or a stud that can be used with screws. Preferably, the circuit board 33 is locked and fixed to the top wall of the housing by screws. The screws pass through the circuit board and are locked to the limiting post on the top wall of the housing. Therefore, the limiting post 315 also serves as a fixed position, realizing the reuse and compactness of the structure.

[0066] It should be noted that the specific structure of the above-mentioned extension is not limited to one of the above-mentioned methods. For example, in another embodiment, the above-mentioned horizontal part is a groove, and the groove sidewall forms a sleeve wall; or, in another embodiment, the extension 53 is an extension piece, and the surrounding rib 313 and the circuit board 33 directly clamp the sheet-like extension piece to fix the isolation pad.

[0067] like Figure 7 , Figure 8 As shown, in a preferred embodiment of the present invention, the trigger part 52 includes a sink 55 and a protrusion 56 located in the central region of the sink 55, that is, the protrusion 56 covers the center point of the sink. Preferably, but not limited to, the protrusion and the sink are coaxially arranged. Referring to the correspondence between the protrusion 56 and the contact rod of the mechanical switch 34, the sink 55 is connected to the bottom of the trigger hole 312.

[0068] By setting a recessed groove 55 and a protrusion 56, with the protrusion 56 corresponding to the contact rod of the mechanical switch 34, when the user presses down the mechanical button 20, the trigger rod 22 of the mechanical button 20 presses down the protrusion 56 to trigger the mechanical switch 34; by setting a recessed groove 55, which is connected below the trigger hole 312, the water flowing into the trigger hole 312 can be accumulated, preventing the water from flowing to other places. When the user shakes the main unit 30, the water temporarily stored in the recessed groove 55 can be more directly shaken out of the main unit 30, and of course, it can also evaporate more quickly. Thus, not only are the circuit board 33 and the mechanical switch 34 waterproof, but the situation of water accumulating on the isolation pad 50 for a long time can also be prevented, avoiding problems such as odor.

[0069] As a preferred embodiment, combined with Figure 5 The trigger part 52 arches upward relative to the isolation part 51 and forms a limiting cavity 57 into which the mechanical switch 34 extends. The groove 55 and the protrusion 56 are provided on the top wall of the limiting cavity 57, making the top wall of the limiting cavity bend, which is more conducive to deformation and makes it easier for the user to operate when the mechanical switch is pressed down.

[0070] Of course, in practice, the structure of the sink 55 described above is still applicable to other embodiments of this application. For example, when the trigger part 52 and the isolation part 51 are connected to a plane, the sink 55 corresponds to the area below the mounting hole 311. The sink 55 contains a solid protrusion 56, which can bring the trigger rod and the contact rod of the mechanical switch closer together, thus avoiding excessive trigger travel.

[0071] This utility model does not limit the overall shape of the host computer, such as Figure 1As shown, in a preferred embodiment, the top wall of the housing includes a mounting platform on which the touch panel 60 is mounted and a mounting recess that is recessed relative to the mounting platform. The mounting hole 311 and the trigger hole 312 are located on the mounting recess, and the mechanical button 20 is mounted above the mounting recess. When the mechanical button 20 is not under force, the mechanical button 20 is flush with the top of the touch panel 60.

[0072] By setting up an installation platform and mounting base, the touch panel 60 and mechanical buttons 20 are integrated, while making reasonable and compact use of the space on the top wall of the housing. The touch panel 60 allows users to select functions by touch operation, while the mechanical buttons 20 are used for pressing operation to control the operation time, providing users with multiple selectable operation methods and improving the user experience. The mounting base ensures that when the mechanical buttons 20 are not under pressure, the top of the mechanical buttons 20 is flush with the top of the touch panel 60, making the top of the main unit 30 flat, improving the product's appearance, and preventing accidental touches due to the mechanical buttons 20 protruding, thus ensuring operational safety.

[0073] Of course, in other embodiments, a mechanical button can be provided on the top wall of the main unit's housing; or, two or three mechanical buttons can be provided on the top wall of the main unit's housing. For example, multiple mechanical buttons are suitable for controlling different speeds of the motor when it is necessary to control the motor to perform different speeds.

[0074] Alternatively, the housing of this utility model can be a housing with an integral top wall; or, the housing includes a surrounding cylinder around the motor and a top cover separately fixed to the top of the surrounding cylinder, with the top cover forming the top wall of the housing.

[0075] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0076] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0077] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A meat grinder, comprising a mixing cup, a mixing element located within the mixing cup, and a main unit mounted on the mixing cup, the main unit comprising a housing, a motor located within the housing, a circuit board horizontally positioned between the top wall of the housing and the motor, and a mechanical button movably mounted above the top wall of the housing, wherein a return spring abuts against the top wall of the housing, characterized in that, The top wall of the housing has a mounting hole and a trigger hole. The mechanical button has a buckle that extends into the mounting hole and a trigger rod that extends into the trigger hole. The buckle engages with the edge of the mounting hole. A flexible isolation pad is also provided between the circuit board and the top wall of the housing to isolate the two. The isolation pad includes a trigger part located below the trigger hole and an isolation part located below the mounting hole. The circuit board has a protruding mechanical switch. The trigger rod presses against the trigger part to trigger the mechanical switch to operate. The isolation part blocks the circuit board and the buckle. A movable cavity is provided between the isolation part and the top wall of the housing for the buckle to move.

2. A meat grinder according to claim 1, characterized in that, The top wall of the housing is provided with a reinforcing rib that surrounds the trigger hole and the mounting hole. The isolation pad also includes an extension connected to the isolation portion and located below the reinforcing rib. The circuit board is fixedly connected to the top wall of the housing to clamp the extension between the reinforcing rib and the circuit board.

3. A meat grinder according to claim 2, characterized in that, The top wall of the housing is also provided with an isolation rib, which is separated between the trigger hole and the mounting hole and abuts against the isolation part. The isolation rib is connected to the surrounding rib to enclose and form a sealed movable cavity.

4. A meat grinder according to claim 2, characterized in that, The extension includes a sleeve wall that extends to engage with the surrounding reinforcement, and the top wall of the housing is also provided with a limiting post near the surrounding reinforcement, the sleeve wall being limited between the limiting post and the surrounding reinforcement.

5. A meat grinder according to claim 1 or 2, characterized in that, A buffer cavity is formed between the isolation section and the circuit board, and the buffer cavity is located below the movable cavity.

6. A meat grinder according to claim 1, characterized in that, The triggering part includes a sink and a protrusion located in the central region of the sink. The protrusion corresponds to the contact rod of the mechanical switch, and the sink is connected to the area below the trigger hole.

7. A meat grinder according to claim 1, characterized in that, The trigger portion arches upward relative to the isolation portion and forms a limiting cavity into which the mechanical switch can extend. The top wall of the housing is provided with an isolation rib located on the outer periphery of the trigger hole, and the isolation rib is radially limited on the outer periphery of the limiting cavity.

8. A meat grinder according to claim 7, characterized in that, When the mechanical switch is not pressed, the top of the mechanical switch is in clearance fit with the top wall of the limiting cavity; Alternatively, the mounting hole includes a first mounting hole and a second mounting hole, which are symmetrically arranged on both sides of the trigger hole. The isolation rib includes a first isolation rib that isolates the first mounting hole and the trigger hole and a second isolation rib that isolates the second mounting hole and the trigger hole.

9. A meat grinder according to claim 1, characterized in that, The isolation portion is attached to the top of the circuit board; Alternatively, the isolation portion may be an isolation sheet integrally formed on the outer periphery of the trigger portion, and the isolation sheet may cover the entire area below the mounting hole.

10. A meat grinder according to claim 1, characterized in that, The top wall of the housing includes a mounting platform on which a touch panel is mounted and a mounting recess that is recessed relative to the mounting platform. The mounting hole and the trigger hole are located on the mounting recess, and the mechanical button is mounted above the mounting recess. When the mechanical button is not under force, the mechanical button is flush with the top of the touch panel.

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