Bean bin micro switch safety control device and coffee bean grinder adopting the same

Abstract

The utility model discloses a kind of bean bin microswitch safety control device and coffee bean grinder using the device, thickness adjustment ring is located below bean bin seat, bean bin seat is provided with boss downward, downward through hole that is matched with boss is provided on thickness adjustment ring, boss can be freely moved up and down in downward through hole, microswitch safety touch component is provided below downward through hole, microswitch safety touch component has microswitch, vertical touch rod and compression spring, vertical touch rod lower section is sleeved with compression spring, vertical touch rod is located at position below downward through hole, boss bottom end face and vertical touch rod top end face are oppositely arranged, vertical touch rod bottom end is towards the touch pressure tablet of microswitch setting;Vertical touch rod upper section can be raised upward into downward through hole under the elastic recovery force of compression spring.The effective guarantee is that when bean bin is removed or installation is not in place, grinder is not started by mistake, ensure that grinder can normally and safely work.

Description

Technical Field

[0001] This utility model relates to a coffee grinder, and more particularly to a safety switch control device used in a coffee grinder. Background Technology

[0002] Coffee is a popular beverage in people's daily lives, and coffee grinders, also known as coffee grinders, provide coffee grounds and dispense them through a feed tube. Existing coffee grinders typically have a bean hopper to store coffee beans and other raw materials for grinding. The hopper serves for storing or temporarily storing coffee beans and for feeding them to the grinder. However, existing coffee grinders are prone to malfunctions due to operator negligence during hopper installation, such as starting the grinder before the hopper is properly installed or after the hopper has been removed and not yet reinstalled. These errors can lead to malfunctions or damage to the grinder.

[0003] Patent publication number ZL202410780881.7, published on October 1, 2024, discloses a switch interlocking device and a coffee grinder thereof. The switch interlocking device includes: a slider capable of moving between a first position and a second position along a first direction or a second direction; the first direction is the direction from the first position to the second position, and the first and second directions are opposite; a micro switch having metal contacts; and a switch push knob capable of moving between a closed position and an open position. When the slider is in the second position, the switch push knob can move between the closed and open positions under external force, allowing the switch push knob to contact the metal contacts of the micro switch. This application controls the opening of the electrical appliance by controlling the position of the slider, thereby improving the safety of the appliance's use. While this solution improves the safety of starting the coffee grinder to some extent, it still does not consider the coffee hopper's safety during startup. Utility Model Content

[0004] This utility model provides a bean hopper microswitch safety control device to effectively prevent the coffee grinder from being mistakenly started when the bean hopper is removed or not properly installed, ensuring the normal and safe operation of the coffee grinder, and a coffee grinder using this device.

[0005] The specific technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a bean hopper micro switch safety control device, including a coarseness adjustment ring and a bean hopper and its base, wherein the coarseness adjustment ring is located below the bean hopper base, characterized in that: the bean hopper base is provided with a downward protrusion, the coarseness adjustment ring is provided with a downward through hole that cooperates with the protrusion, the protrusion can move freely up and down in the downward through hole, a micro switch safety trigger assembly is provided below the downward through hole, the micro switch safety trigger assembly has a micro switch, a vertical trigger rod and a compression spring, the vertical trigger rod is press-fitted with the compression spring, the vertical trigger rod is located below the downward through hole, and the bottom end face of the protrusion and the top end face of the vertical trigger rod are facing each other, the bottom end of the lower section of the vertical trigger rod is facing the trigger pressure plate of the micro switch; the upper section of the vertical trigger rod can rise upward under the restoring force of the compression spring and enter the downward through hole. This effectively prevents the grinder from being accidentally started when the bean hopper is removed or not properly installed, ensuring that the grinder can work normally and safely.

[0006] Preferably, the micro switch safety actuation assembly includes a micro switch, a vertical actuating rod, and a switch bracket. The switch bracket is provided with the micro switch and the vertical actuating rod. A protruding rod boss is located between the upper and lower sections of the vertical actuating rod. A compression spring is fitted onto the lower section of the vertical actuating rod, with the length of the lower section being greater than the static length of the compression spring. The bottom surface of the rod boss contacts the top of the compression spring. The switch bracket is provided with an upward-facing groove cavity seat. The bottom of the groove cavity seat has a through hole, the circumference of which is greater than the outer circumference of the lower section of the vertical actuating rod and smaller than the inner circumference of the compression spring. The through hole allows the lower section of the vertical actuating rod to press downwards against the actuating plate of the micro switch or to spring upwards back through.

[0007] Preferably, the switch bracket is provided with a first mounting connector, a second mounting connector, a groove cavity seat, and a micro switch mounting connector. The first and second mounting connectors are used to mount the switch bracket to the area below the fineness adjustment ring and outside the grinding chamber assembly, which is located below the fineness adjustment ring.

[0008] Preferably, the boss has an upper part and a lower part, wherein the lower part is a square block structure, and the upper part is an inverted trapezoidal shape that opens up from the top of the lower part to both sides.

[0009] Preferably, the downward through hole has an upper part and a lower part that cooperate with the upper and lower parts of the boss. The upper part of the downward through hole is an inverted trapezoidal shape structure that opens up from the top of the lower part of the downward through hole to both sides.

[0010] Preferably, the downward through hole includes an upper part, a middle part, and a lower part. The upper part of the downward through hole is an inverted trapezoidal structure that opens upwards from the top of the middle part of the downward through hole to both sides. The lower part of the downward through hole is a trapezoidal structure that opens downwards from the bottom of the middle part of the downward through hole to both sides. The two downwardly opening slopes on both sides of the lower part of the downward through hole provide a normal and safe rotation adjustment space for the thickness adjustment ring during the process of the boss pressing down on the vertical actuating rod.

[0011] Preferably, the bottom width of the downwardly sloping ramps on both sides of the lower part of the through hole is greater than the overall width of the vertical actuating rod in the same direction. After the bean hopper is correctly installed, when the thickness adjustment ring is rotated to adjust the thickness, the top surface of the vertical actuating rod can slide to the lower plane position of the thickness adjustment ring through the guide of the sloping ramps, thereby ensuring that the micro switch is always in the state of being activated by the vertical actuating rod.

[0012] Preferably, the first mounting connector and the second mounting connector are arranged perpendicularly to each other in space, and the first mounting connector and the second mounting connector are provided with threaded mounting holes.

[0013] Another objective of this invention is to provide a coffee grinder, including a grinding chamber assembly located below the coarseness adjustment ring, characterized in that: it employs a micro switch safety control device for the grinding chamber as described in one of the above-mentioned technical solutions, with the micro switch safety trigger assembly located below the coarseness adjustment ring and outside the grinding chamber assembly.

[0014] Preferably, the grinding chamber assembly mounting base, which is connected to the fineness adjustment ring at the top of the grinding chamber assembly, is provided with a connecting hole seat and a vertical guide limiting through hole. The connecting hole seat is used to install and connect with the fineness adjustment ring, and the vertical guide limiting through hole is used to guide and accommodate the up and down movement of the vertical actuator rod.

[0015] The beneficial effects of this utility model are: it can effectively prevent the grinder from being started incorrectly when the bean hopper is removed or not installed properly, thus ensuring that the grinder can work normally and safely. Attached image description: The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the installation and use structure of the micro switch safety control device for the bean hopper of this utility model.

[0017] Figure 2 yes Figure 1 A partial cross-sectional structural diagram.

[0018] Figure 3 yes Figure 1 A schematic diagram of the exploded structure.

[0019] Figure 4 This is a schematic diagram of the safety control device for the bean hopper micro switch and the coffee grinder using the device.

[0020] Figure 5 yes Figure 1 This diagram illustrates the structure of the grinder when, after the bean hopper is installed, the vertical actuator slides to the lower plane of the bean hopper adjustment ring and remains in a depressed microswitch position, keeping the microswitch constantly on.

[0021] Figure 6 yes Figure 1 The diagram shows the structure of the grinder when the coarseness adjustment ring is rotated to the vertical trigger position, the bean hopper is removed, and the vertical trigger is lifted by the restoring force of the compressed spring, resulting in the microswitch being in the off state and the grinder being unable to work. Detailed Implementation

[0022] Example 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 In the illustrated embodiment, a bean hopper micro-switch safety control device includes a thickness adjustment ring 20, a bean hopper 10, and a bean hopper base 50. The bean hopper 10 is equipped with a bean hopper cover 11. The thickness adjustment ring 20 is installed below the bean hopper base 50. The bean hopper base 50 extends downward and is provided with a boss 51. The thickness adjustment ring 20 has a downward through hole 21 that mates with the boss 51. The boss 51 can move freely up and down within the downward through hole 21. A micro-switch safety trigger assembly is installed below the downward through hole 21. The micro-switch safety trigger assembly has a micro-switch and a vertical trigger. The vertical actuating rod has a rod body boss 311 that presses against the compression spring 32. The lower section 31 of the vertical actuating rod is fitted with the compression spring 32. The length of the lower section 31 of the vertical actuating rod is greater than the static length of the compression spring 32. The vertical actuating rod is located below the downward through hole 21, and the bottom end face of the boss 51 is opposite to the top end face of the vertical actuating rod. The bottom end of the lower section of the vertical actuating rod is facing the actuating pressure plate 331 of the micro switch 33. The upper section 312 of the vertical actuating rod can rise upward under the restoring force of the compression spring 32 and enter the downward through hole 21.

[0023] The micro switch safety actuation assembly includes a micro switch 33, a vertical actuating rod, and a switch bracket 30. The micro switch 33 and the vertical actuating rod are mounted on the switch bracket 30 (see...). Figure 3 A protruding rod boss 311 is connected between the upper section 312 and the lower section 31 of the vertical actuating rod. A compression spring 32 is fitted on the lower end of the vertical actuating rod of the rod boss 311, that is, a compression spring 32 is fitted on the outer periphery of the lower section 31 of the vertical actuating rod. The bottom end face of the rod boss 311 is in contact with the top end of the compression spring 32. An upward-facing groove cavity seat 36 is installed and connected on the switch bracket 30. The bottom end of the groove cavity seat 36 has a groove bottom through hole 361. The circumference of the groove bottom through hole 361 is larger than the outer circumference of the lower section 31 of the vertical actuating rod, and smaller than the inner circumference of the compression spring 32. The groove bottom through hole 361 is used for the bottom end face of the lower section 31 of the vertical actuating rod to press downward against the actuating plate 331 of the micro switch 33 or for the lower section 31 of the vertical actuating rod to spring upward.

[0024] The switch bracket 30 is equipped with a first mounting connector 35, a second mounting connector 34, a recessed cavity seat 36, and a micro switch mounting connector 38. The first mounting connector 35 and the second mounting connector 34 are used to mount the switch bracket 30 onto the coarseness adjustment ring 20. Figure 3 As shown, two different view diagrams of the coarseness adjustment ring 20 are drawn, one from a perspective and the other from a top view, to better demonstrate its effect at the position of the downward through-hole 21. The grinding chamber assembly 40 is installed and connected below the coarseness adjustment ring 20. The first mounting connector 35 and the second mounting connector 34 are spatially perpendicular to each other. Both the first and second mounting connectors have threaded mounting holes. The first mounting connector 35 is longitudinally positioned to connect the switch bracket 30 upwards to the grinding chamber assembly mounting connector 41 of the grinding chamber assembly 40, located below the coarseness adjustment ring 20. The second mounting connector 34 is laterally positioned to connect the switch bracket 30 laterally to the outside of the grinding chamber assembly 40. This bidirectional mounting structure improves the stability, firmness, and effectiveness of the switch bracket 30's installation and use.

[0025] The boss 50 has an upper part 512 and a lower part 511, wherein the lower part 511 is a square block structure, and the upper part 512 is an inverted trapezoidal structure that slopes upwards and opens to both sides from the top of the lower part (see...). Figure 6 ).

[0026] The downward through hole 21 has an upper part and a lower part of the downward through hole that cooperate with the upper part 512 and the lower part 511 of the boss 51. The upper part of the downward through hole is an inverted trapezoidal shape structure that opens up from the top of the lower part of the downward through hole to both sides.

[0027] The downward through hole 21 includes an upper part 213, a middle part 212, and a lower part 211 (see...) Figure 2 As shown), the upper part 213 of the downward through hole is an inverted trapezoidal structure that opens upwards and outwards from the top of the middle part 212 of the downward through hole, and the lower part 211 of the downward through hole is a trapezoidal structure that opens downwards and outwards from the bottom of the middle part 212 of the downward through hole; and the downwardly opening slopes on both sides of the lower part 211 of the downward through hole are vertical actuating rods, providing a normal and safe rotation adjustment space for the thickness adjustment ring during the process of the boss pressing down on the vertical actuating rod.

[0028] The width of the downwardly sloping ramps on both sides of the lower part 211 of the through-hole is greater than the overall width of the vertical actuating rod in the same direction. After ensuring the bean hopper is correctly installed, when the thickness adjustment ring 20 is rotated to adjust the thickness, the top surface of the vertical actuating rod can slide under the guidance of the sloping ramps of the lower part 211 of the through-hole to the lower plane position of the thickness adjustment ring 20 (see...). Figure 5 As shown in the figure, this ensures that the micro switch 33 is always in the state of being activated by the lower section 31 of the vertical actuating rod.

[0029] Example 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 In the illustrated embodiment, a coffee grinder includes a grinding chamber assembly 40, which is installed below the coarseness adjustment ring 20. It employs the microswitch safety control device described in Embodiment 1, with the microswitch safety trigger component installed below the coarseness adjustment ring and outside the grinding chamber assembly 40. Other components constituting the coffee grinder include the housing, etc., which will not be described in detail here. The grinding chamber assembly mounting connection seat 41, which is connected to the coarseness adjustment ring 20 at the top of the grinding chamber assembly 40, is provided with a connection hole seat 42 and a vertical guide limiting through hole 43 (see...). Figure 3 The connecting hole seat 42 is used for installation and connection with the coarseness adjustment ring 20, and the vertical guide limit through hole 43 is used to guide and accommodate the up and down movement of the vertical actuating rod. Everything else is the same as in Embodiment 1.

[0030] This utility model is not limited to the specific embodiments described above. It can also have other structural embodiments, such as replacing the compression spring with an elastic rubber component to achieve the elastic rebound effect on the vertical trigger rod. All of these are within the protection scope of this utility model.

[0031] In the description of the positional relationship in this utility model, terms such as "inner", "outer", "upper", "lower", "left", and "right" 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 the embodiments 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.

[0032] The above content and structure describe the basic principles, main features, and advantages of this utility model, which should be understood by those skilled in the art. The examples and descriptions above are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety control device for a bean hopper micro switch, comprising a coarseness adjustment ring and a bean hopper and its base, wherein the coarseness adjustment ring is disposed below the bean hopper base, characterized in that: The bean hopper base has a downward-facing boss, and the coarseness adjustment ring has a downward through hole that mates with the boss. The boss can move freely up and down within the downward through hole. Below the downward through hole is a micro switch safety trigger assembly, which includes a micro switch, a vertical trigger rod, and a compression spring. The vertical trigger rod presses against the compression spring and is located below the downward through hole, with the bottom surface of the boss and the top surface of the vertical trigger rod facing each other. The bottom end of the lower section of the vertical trigger rod faces the trigger plate of the micro switch. The upper section of the vertical trigger rod can rise upward under the restoring force of the compression spring and enter the downward through hole.

2. The bean silo micro switch safety control device according to claim 1, characterized in that: The microswitch safety actuation assembly includes a microswitch, a vertical actuating rod, and a switch bracket. The switch bracket has a microswitch and a vertical actuating rod. A protruding rod boss is located between the upper and lower sections of the vertical actuating rod. A compression spring is fitted onto the lower section of the vertical actuating rod, with the length of the lower section exceeding the static length of the compression spring. The bottom surface of the rod boss contacts the top of the compression spring. The switch bracket has an upward-facing recessed cavity seat with a bottom through-hole. The circumference of the bottom through-hole is larger than the outer circumference of the lower section of the vertical actuating rod, but smaller than the inner circumference of the compression spring. The bottom through-hole allows the lower section of the vertical actuating rod to press downwards against the actuating plate of the microswitch or to spring upwards back through.

3. The bean silo micro switch safety control device according to claim 2, characterized in that: The switch bracket is provided with a first mounting connector, a second mounting connector, a groove cavity seat, and a micro switch mounting connector. The first and second mounting connectors are used to mount the switch bracket to the area below the coarseness adjustment ring and outside the grinding chamber assembly, which is located below the coarseness adjustment ring.

4. The bean silo micro switch safety control device according to claim 1, characterized in that: The protrusion has an upper part and a lower part, wherein the lower part is a square block structure, and the upper part is an inverted trapezoidal shape that opens up from the top of the lower part to both sides.

5. The bean silo micro switch safety control device according to claim 1, characterized in that: The downward through hole has an upper part and a lower part that cooperate with the upper and lower parts of the boss. The upper part of the downward through hole is an inverted trapezoidal shape structure that opens up from the top of the lower part of the downward through hole to both sides.

6. The bean silo micro switch safety control device according to claim 1, characterized in that: The downward through-hole includes an upper part, a middle part, and a lower part. The upper part of the downward through-hole is an inverted trapezoidal structure that opens upwards from the top of the middle part of the downward through-hole. The lower part of the downward through-hole is a trapezoidal structure that opens downwards from the bottom of the middle part of the downward through-hole. The two downwardly opening slopes on both sides of the lower part of the downward through-hole provide a normal and safe rotation adjustment space for the thickness adjustment ring during the process of the boss pressing down on the vertical actuating rod.

7. The bean silo micro switch safety control device according to claim 6, characterized in that: The bottom width of the downwardly sloping ramps on both sides of the lower part of the through hole is greater than the overall width of the vertical actuating rod in the same direction. After the bean hopper is correctly installed, when the thickness adjustment ring is rotated to adjust the thickness, the top surface of the vertical actuating rod can slide to the lower plane position of the thickness adjustment ring through the guide of the sloping ramps, thereby ensuring that the micro switch is always in the state of being activated by the vertical actuating rod.

8. The bean silo micro switch safety control device according to claim 3, characterized in that: The first mounting connector and the second mounting connector are arranged perpendicularly to each other in space, and the first mounting connector and the second mounting connector are provided with threaded mounting holes.

9. A coffee grinder, comprising a grinding chamber assembly located below a coarseness adjustment ring, characterized in that: it employs a micro switch safety control device as described in any one of claims 1 to 8, wherein the micro switch safety trigger assembly is located below the coarseness adjustment ring and outside the grinding chamber assembly.

10. The coffee grinder according to claim 9, characterized in that: The grinding chamber assembly mounting base, which is connected to the fineness adjustment ring at the top of the grinding chamber assembly, is provided with a connecting hole seat and a vertical guide limit through hole. The connecting hole seat is used to install and connect with the fineness adjustment ring, and the vertical guide limit through hole is used to guide and accommodate the up and down movement of the vertical actuator rod.

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