Safety type magnetic attraction micro switch structure with long guide rod and food processor

Abstract

The utility model discloses a safe type magnetic attraction microswitch structure with long guide rod and food processor relates to food processor structure technical field, apply to the electric equipment with upper structure body and lower structure body. The lower structure body has the shell, is equipped with electric element, microswitch and guide rod in the shell inside, electric element and microswitch electricity are connected, the guide rod is fixed in the horizontal direction, and can be active along the vertical direction, the lower magnetic attraction spare is fixed to the upper end of guide rod, the upper structure body is fixed with upper magnetic attraction spare, and the outer periphery of guide rod is equipped with return spring, the upper structure body and lower structure body are connected, and the upper magnetic attraction spare and lower magnetic attraction spare are isolated each other, and the magnetic force is formed between upper magnetic attraction spare and lower magnetic attraction spare, makes guide rod move, and the lower end of guide rod triggers microswitch, and guide rod linkage makes return spring deformation, when two structure spare separates, the magnetic force disappears, and guide rod, return spring resets. Realize the safe start of electric equipment finally, and effectively solve the waterproof problem of lower structure body.

Description

Technical Field

[0001] This utility model relates to the field of food processor structure technology, specifically to a safety magnetic micro-switch structure with a long guide rod and a food processor. Background Technology

[0002] Cooking appliances such as food processors typically have high-speed rotating stirring structures and / or heating elements inside. If they are powered on without the lid fully closed, or if the lid is accidentally opened during operation, rotating parts, hot liquids, or hot steam may detach from the container, causing personal injury or property damage. To address this issue, existing technology proposes a solution where a microswitch or a linkage mechanism for the microswitch is installed at the junction of the lid and the body of the food processor. By triggering the microswitch and detecting the open / closed state of the lid, the circuit is controlled to ensure that the device can only start working when the lid is fully closed, thereby effectively eliminating safety hazards.

[0003] For example, patent document CN209733670U discloses a food processor that, by placing the switch assembly on the cup base, allows for greater flexibility in the cup's structure and simplifies the handle design. Furthermore, the switch assembly is connected to a second switch after the cup lid is assembled, ensuring the safety of the switch assembly and improving the product's safety performance. Notably, this design requires a protruding push-off part on the lower surface of the cup lid. When the lid and cup body are connected, the push-off part needs to pass through a pre-drilled opening into the cup body to contact the linkage mechanism inside the cup, thereby triggering the microswitch. The drawback of this design is that when cleaning the cup body, water or detergent can easily seep into the switch through the opening, causing a short circuit or corrosion of the mechanism. Additionally, residue can easily accumulate at the opening, posing a hygiene hazard and potentially hindering the normal movement of the push-off part.

[0004] Therefore, there is an urgent need to provide a safe magnetic micro-switch structure with a long guide rod and a food processor to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the problems in related technologies, this utility model proposes a safety magnetic micro-switch structure and a food processor with a long guide rod. It utilizes magnets and magnetic attraction principles to achieve the linkage of the micro-switch, eliminating the need for openings and matching protrusions in the cup body. This avoids potential problems such as short circuits and corrosion, and improves the safety of electrical equipment.

[0006] This utility model is implemented as follows: A safety-type magnetic micro switch structure with a long guide rod is applied to an electrical device. The electrical device includes a detachable upper structure and a lower structure that are connected vertically. The lower structure has a shell, inside which are installed electrical components, an adjacent micro switch, and a vertically arranged guide rod. The electrical components and the micro switch are electrically connected for on / off switching. The guide rod is fixed in the horizontal direction and can move in the vertical direction; a lower magnetic chuck is fixed at the upper end of the guide rod; an upper magnetic chuck is fixed on the upper structure; a return spring is sleeved on the outer periphery of the guide rod. After the upper structure and the lower structure are connected, the outer shell isolates the upper magnetic chuck and the lower magnetic chuck from each other; the upper magnetic chuck and the lower magnetic chuck are vertically distributed, and a magnetic force is formed between them, causing the guide rod to move, the lower end of the guide rod to trigger the micro switch, and the guide rod to deform the return spring in conjunction; after the upper structure and the lower structure are separated, the magnetic force disappears, the deformed return spring recovers, and the guide rod is reset.

[0007] Electrical connection refers to a microswitch controlling the flow of current to an electrical component. Compared to existing technologies, this solution utilizes the magnetic force of a permeable spatial isolation structure to link the guide rod and the microswitch, eliminating the need for an opening for mechanical linkage and effectively solving the waterproofing problem of the lower structure.

[0008] As a further optimization of the above solution, both the upper magnetic suction component and the lower magnetic suction component are magnets, and the magnetic force is a repulsive force; after the upper structure and the lower structure are connected, the guide rod moves downward, causing the upper end of the reset spring to be compressed and deformed downward.

[0009] As a further optimization of the above solution, the upper magnetic chuck is a magnet, and the lower magnetic chuck is a metal that generates an attractive force with the magnet, and the magnetic force is an attractive force; after the upper structure and the lower structure are connected, the guide rod moves upward, causing the lower end of the reset spring to be compressed and deformed upward.

[0010] The metal in this case can be a magnet, or a metal such as iron that is attracted by a magnet. As a further optimization of the above solution, the micro switch includes a lever, one end of which is a free end; the lever is tilted upwards at an angle along the horizontal direction, and the tilted end is the free end; when the guide rod moves downwards, the lower end of the guide rod presses down on the free end, so that the circuit where the micro switch is located is turned on; when the guide rod is reset, the lever is reset.

[0011] The level here is based on the orientation of the electrical equipment when it is normally placed, that is, relative to the level of the guide rod. As a further optimization of the above solution, the micro switch includes a lever, one end of which is a free end; the lever is tilted laterally from the vertical direction, with the tilted end being the free end, which faces obliquely upward; the bottom of the side surface of the guide rod has a protruding contact end; when the guide rod moves upward, the contact end laterally presses against the free end, making the circuit where the micro switch is located conductive; when the guide rod resets, the lever resets. As a further optimization of the above solution, a limiting seat is fixedly provided inside the outer shell; the limiting seat has a limiting cavity surrounding the periphery of the guide rod, and the limiting cavity fixes the guide rod in the horizontal direction. As a further optimization of the above solution, the limiting seat has a vertically extending guide groove; the side surface of the guide rod has a raised strip-shaped protrusion; the strip-shaped protrusion extends in the vertical direction; The length of the strip-shaped protrusion is less than the length of the guide groove, and the width of the strip-shaped protrusion is adapted to the width of the guide groove.

[0012] The axial movement of the guide rod is guided by both the guide groove and the strip-shaped protrusions, and deflection of the guide rod is prevented. The prevention of deflection is particularly effective for guide rods with the aforementioned protruding contact ends. As a further optimization of the above solution, the limiting cavity has solid surfaces directly above and below it, which are respectively referred to as the upper limiting surface and the lower limiting surface; the guide rod protrudes circumferentially along the side surface to form a limiting protrusion; When the magnetic force is an attractive force, the reset spring is limited to the space between the lower limiting surface and the lower surface of the limiting protrusion; When the magnetic force is a repulsive force, the reset spring is limited to the upper limit surface and the upper surface of the limiting protrusion.

[0013] When the upper and lower structures are connected, the limiting protrusion and the limiting surface approach each other to compress the return spring. The elastic force of the return spring when it recovers its deformation pushes the limiting protrusion and its guide rod back to their original position. The cooperation of the limiting cavity, the limiting protrusion, and the return spring also limits the vertical stroke of the guide rod.

[0014] When the magnetic force is attractive, if the lower structure is inverted and not connected to the upper structure, the return spring can also prevent the guide rod from triggering the micro switch under the action of gravity.

[0015] In the actual production and assembly, since the guide rod has protruding structures such as limiting protrusions on its side, the limiting seat forms a limiting cavity by constructing a cylindrical structure, with one end open for the main column of the guide rod to pass through only, and the other end open to match the size of the limiting protrusion.

[0016] Meanwhile, deformable wedge-shaped protrusions continue to bulge around the limiting protrusion, and the limiting cavity forms a vertical stroke groove with a width that matches the wedge-shaped protrusions; a guide slope is set at the end with the larger opening of the limiting cavity, and then a guide rod is inserted. The wedge-shaped protrusions gradually deform from the guide slope until they are stuck into the vertical stroke groove, so that the limiting protrusion is limited to the limiting cavity.

[0017] This utility model also provides a food processor, including a body with an upper opening and an upper cover; the upper cover and the upper opening are matched in size; the food processor uses a safety magnetic micro-switch structure with a long guide rod as described above; wherein, the body is the lower structure and the upper cover is the upper structure; The outer casing contains a cup body, and the electrical component is fixed below the cup body; a gap is formed between the cup body and the outer casing; the long guide rod is located in the gap; The lower surface of the upper cover is provided with a downwardly protruding fixing hook, and the lower end of the fixing hook has a side-protruding hook connection part; the fixing hook is close to the upper magnetic suction member; the body has a side-concave groove; the hook connection part is adapted to the size of the groove.

[0018] The long guide rod in this design refers to the guide rod whose length accounts for a large proportion of the overall height of the food processor, extending almost from the top to the bottom of the machine.

[0019] After the top cover and the upper opening of the body are connected, the top cover will be subjected to an upward magnetic force, as well as an upward force from the high-pressure gas (steam) generated inside the cup cavity. The connection between the top cover and the body is strengthened by the hook and groove. When the top cover and the body are separated, the hook and groove separate.

[0020] As a further optimization of the above solution, the electrical components include a drive unit and a heating unit; the heating unit includes an integrally connected heat spreader and a heating tube, and the upper surface of the heat spreader is attached and fixed to the outer surface of the bottom of the cup body; The drive unit is located below the heating unit. The drive unit has an output shaft that extends upward and passes through the inner cavity of the cup. The upper end of the output shaft is connected to a rotating cutter.

[0021] The beneficial effects are as follows: This invention provides a safety-type magnetic micro-switch structure with a long guide rod and a food processor. By incorporating a built-in guide rod, micro-switch, return spring, and mutually isolated magnetic components, a non-contact magnetic linkage mechanism is formed. Utilizing the magnetic force permeable to the spatial isolation structure, the guide rod and micro-switch are linked without requiring an opening for mechanical linkage. This achieves safe starting of the electrical equipment and effectively solves the waterproofing problem of the lower structure, eliminating the risk of liquid seepage during equipment cleaning. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the food processor provided in Embodiment 1 of this utility model; Figure 2 A schematic diagram illustrating the fit between the limiting seat, guide rod, and some of the connected structural components provided in Embodiment 1 of this utility model; Figure 3 for Figure 2 A cross-sectional diagram; Figure 4 for Figure 1 Exploded view; Figure 5 A schematic diagram illustrating the fit between the limiting seat, guide rod, and some of the connected structural components provided in Embodiment 2 of this utility model; Figure 6 for Figure 5 A cross-sectional diagram; Figure label: 1. Upper structure; 11. Upper magnetic attachment; 12. Fixing hook; 121. Hook connection part; 2. Lower structure; 21. Outer shell; 211. Groove; 22. Cup body; 23. Gap; 24. Drive unit; 25. Heating unit; 26. Rotating cutter; 3. Limiting seat; 31. Limiting cavity; 32. Upper limiting surface; 33. Lower limiting surface; 34. Guide groove; 35. Vertical stroke groove; 36. Guide slope; 4. Guide rod; 41. Strip-shaped protrusion; 42. Limiting protrusion; 43. Wedge-shaped protrusion; 44. Lower magnetic suction component; 45. Contact end; 5. Return spring; 6. Micro switch; 61. Free end. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1 like Figures 1 to 4 As shown, this embodiment provides a food processor, including a body with an upper opening and a lid; the lid and the upper opening are sized to match. The body includes an outer shell 21, and a cup 22 is disposed inside the outer shell 21, with a gap 23 formed between the cup 22 and the outer shell 21. The inner cavity of the cup 22 is used for processing ingredients or cooking food.

[0025] Electrical components are fixed below the cup body 22; specifically, the electrical components include a drive unit 24 and a heating unit 25; the heating unit 25 includes an integrally connected heat spreader and a heating tube, the upper surface of the heat spreader is attached and fixed to the outer surface of the bottom of the cup body 22; the drive unit 24 is located below the heating unit 25, the drive unit 24 has an output shaft, the output shaft extends upward and passes through the inner cavity of the cup body 22, and the upper end of the output shaft is connected to a rotating cutter 26.

[0026] The food processor in this embodiment uses a safety magnetic micro switch 6 structure with a long guide rod 4. As an electrical device, the food processor body and the top cover are respectively a separable lower structure 2 and an upper structure 1 that are connected vertically.

[0027] A limiting seat 3 is fixed in the gap 23 within the lower structure 2. The limiting seat 3 includes a vertical cylindrical structure, and a limiting cavity 31 is formed inside the cylindrical structure. The limiting cavity 31 is used to limit the guide rod 4.

[0028] Specifically, the limiting cavity 31 has solid surfaces directly above and below it, referred to as the upper limiting surface 32 and the lower limiting surface 33, respectively. The limiting seat 3 has vertically arranged guide grooves 34 and vertical stroke grooves 35 on the periphery of the limiting cavity 31. The limiting seat 3 has a guide ramp 36 on the upward-facing surface directly above the upper limiting surface 32.

[0029] The guide rod 4 is a vertical, elongated cylindrical structure. A strip-shaped protrusion 41 extends vertically along the side surface of the cylindrical structure, and a limiting protrusion 42 protrudes circumferentially along the side surface of the cylindrical structure. The outer circumferential surface of the limiting protrusion has a wedge-shaped protrusion 43.

[0030] The length of the strip-shaped protrusion 41 is less than the length of the guide groove 34, and the width of the strip-shaped protrusion 41 matches the width of the guide groove 34. The width of the vertical stroke groove 35 matches the outer contour of the wedge-shaped protrusion 43.

[0031] When the guide rod 4 and the limiting seat 3 are assembled, the guide rod 4 is inserted into the limiting cavity 31 from the side of the limiting seat 3 with the guide slope 36. The wedge-shaped protrusion 43 gradually deforms from the guide slope 36 until it is engaged in the vertical stroke groove 35, so that the limiting protrusion 42 is confined within the limiting cavity 31. After assembly, the guide rod 4 is fixed in the horizontal direction and cannot rotate, but can only move up and down with a limited stroke in the vertical direction; the guide rod 4 is also located within the gap 23.

[0032] A return spring 5 is sleeved on the outer periphery of the guide rod 4. The return spring 5 is located between the lower limit surface 33 and the lower surface of the limit protrusion 42.

[0033] A lower magnetic attractor 44, specifically a magnet, is fixed to the upper end of the guide rod 4. An upper magnetic attractor 11, specifically a magnet, is fixed to the lower surface of the upper structure 1.

[0034] A micro switch 6 is fixed below the limit seat 3, adjacent to the guide rod 4. The micro switch 6 is electrically connected to the power supply component. Specifically, the micro switch 6 includes a lever, one end of which is a free end 61; the lever is tilted upwards at an angle along the horizontal direction, and the tilted end is the free end 61.

[0035] After the upper structure 1 and the lower structure 2 are connected, the outer shell 21 isolates the upper magnetic 11 and the lower magnetic 44 from each other. The upper magnetic 11 and the lower magnetic 44 are vertically distributed, and a magnetic force is formed between them, specifically a repulsive force. The magnetic force pulls the guide rod 4 downward, causing the limiting protrusion 42 to press down the reset spring 5, and the lower end of the guide rod 4 to press down the free end 61 of the lever to trigger the micro switch 6. The reset spring 5 is compressed and deformed from the upper end downward. At this time, the food processor is in a power-on state.

[0036] After the upper structure 1 and the lower structure 2 separate, the magnetic force disappears, the deformed return spring 5 returns to its original state, and the guide rod 4 returns to its original position. The guide rod 4 separates from the micro switch 6, the lever returns to its original position, and the food processor is now in a non-powered state.

[0037] In this embodiment, the lower surface of the upper cover is provided with a downwardly protruding fixing hook 12, and the lower end of the fixing hook 12 has a side-protruding hook portion 121; the fixing hook 12 is close to the upper magnetic suction member 11; the body has a side-concave groove 211; the hook portion 121 is adapted to the size of the groove 211. After the upper cover and the body are connected, the groove 211 and the hook portion 121 are engaged and connected.

[0038] Example 2 This implementation example Figure 5 , Figure 6 As shown, features not explained in this embodiment are explained using the method described in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is: The guide ramp 36 is located on the downward-facing surface of the limiting seat 3 directly below the lower limiting surface 33. The reset spring 5 is positioned between the upper limiting surface 32 and the upper surface of the limiting protrusion 42. The lower magnetic attractor 44 is an iron block, and the magnetic force formed between the upper magnetic attractor 11 and the lower magnetic attractor 44 is an attractive force. On the micro switch 6, the lever is tilted laterally from the vertical direction, and the tilted end is the free end 61, which faces obliquely upward. The lower end of the guide rod 4 has a laterally protruding contact end 45.

[0039] After the upper structure 1 and the lower structure 2 are connected, the magnetic force pulls the guide rod 4 to move upward, causing the limiting protrusion 42 to press the reset spring 5, and the contact end 45 at the lower end of the guide rod 4 to press the free end 61 of the paddle to trigger the micro switch 6. The reset spring 5 is compressed and deformed from the lower end upward, at which point the food processor is in a power-on state.

[0040] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A safety-type magnetic micro-switch structure with a long guide rod, applied to electrical equipment, the electrical equipment comprising a detachable upper structure and a lower structure connected vertically; characterized in that: The lower structure has an outer shell, inside which are installed electrical components, a micro switch and a vertically arranged guide rod; the electrical components and the micro switch are electrically connected on and off. The guide rod is fixed in the horizontal direction and can move in the vertical direction; a lower magnetic chuck is fixed at the upper end of the guide rod; an upper magnetic chuck is fixed on the upper structure; a return spring is sleeved on the outer periphery of the guide rod. After the upper structure and the lower structure are connected, the outer shell isolates the upper magnetic chuck and the lower magnetic chuck from each other; the upper magnetic chuck and the lower magnetic chuck are vertically distributed and form a magnetic force between them, causing the guide rod to move, the lower end of the guide rod to trigger the micro switch, and the guide rod to deform the return spring in conjunction; after the upper structure and the lower structure are separated, the magnetic force disappears, the deformed return spring recovers and resets the guide rod.

2. The safety magnetic micro switch structure with a long guide rod according to claim 1, characterized in that: Both the upper and lower magnetic components are magnets, and the magnetic force is a repulsive force. After the upper and lower structures are connected, the guide rod moves downward, causing the upper end of the reset spring to be compressed and deformed downward.

3. The safety magnetic micro switch structure with a long guide rod according to claim 1, characterized in that: The upper magnetic chuck is a magnet, and the lower magnetic chuck is a metal that generates an attractive force with the magnet. The magnetic force is the attractive force. After the upper structure and the lower structure are connected, the guide rod moves upward, causing the lower end of the return spring to be compressed and deformed upward.

4. The safety magnetic micro switch structure with a long guide rod according to claim 2, characterized in that: The micro switch includes a lever, one end of which is a free end; the lever is tilted upwards at an angle along the horizontal direction, and the tilted end is the free end; when the guide rod moves downwards, the lower end of the guide rod presses down on the free end, thereby turning on the circuit where the micro switch is located; when the guide rod resets, the lever resets.

5. The safety magnetic micro switch structure with a long guide rod according to claim 3, characterized in that: The micro switch includes a lever, one end of which is a free end; the lever is tilted laterally from the vertical direction, with the tilted end facing obliquely upward; the bottom of the side surface of the guide rod has a protruding contact end; when the guide rod moves upward, the contact end laterally presses against the free end, making the circuit of the micro switch conductive; when the guide rod resets, the lever resets.

6. A safety-type magnetic micro switch structure with a long guide rod according to claim 2 or 3, characterized in that: A limiting seat is fixedly provided inside the outer shell; the limiting seat has a limiting cavity surrounding the periphery of the guide rod, and the limiting cavity fixes the guide rod in the horizontal direction.

7. A safety-type magnetic micro switch structure with a long guide rod according to claim 6, characterized in that: The limiting seat has a vertically extending guide groove; the side surface of the guide rod has raised strip-shaped protrusions; The strip-shaped protrusions extend in the vertical direction; The length of the strip-shaped protrusion is less than the length of the guide groove, and the width of the strip-shaped protrusion is adapted to the width of the guide groove.

8. A safety-type magnetic micro switch structure with a long guide rod according to claim 6, characterized in that: The limiting cavity has solid surfaces directly above and below it, which are referred to as the upper limiting surface and the lower limiting surface, respectively; the guide rod protrudes circumferentially along the side surface to form a limiting protrusion; When the magnetic force is an attractive force, the reset spring is limited to the space between the lower limiting surface and the lower surface of the limiting protrusion; When the magnetic force is a repulsive force, the reset spring is limited to the upper limit surface and the upper surface of the limiting protrusion.

9. A food processor, comprising a body having an upper opening and an upper cover; the upper cover and the upper opening being sized to fit together; characterized in that: The invention employs a safety-type magnetic micro-switch structure with a long guide rod as described in any one of claims 1 to 8; wherein the body is the lower structure and the upper cover is the upper structure; The outer casing contains a cup body, and the electrical component is fixed below the cup body; a gap is formed between the cup body and the outer casing; the long guide rod is located in the gap; The lower surface of the upper cover is provided with a downwardly protruding fixing hook, and the lower end of the fixing hook has a side-protruding hook connection part; the fixing hook is close to the upper magnetic suction member; the body has a side-concave groove; the hook connection part is adapted to the size of the groove.

10. A food processor according to claim 9, characterized in that: The electrical components include a drive unit and a heating unit; the heating unit includes an integrally connected heat spreader and a heating tube, and the upper surface of the heat spreader is attached and fixed to the outer surface of the bottom of the cup body. The drive unit is located below the heating unit. The drive unit has an output shaft that extends upward and passes through the inner cavity of the cup. The upper end of the output shaft is connected to a rotating cutter.

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