Gear adjusting mechanism and coffee grinder

Abstract

The utility model provides a gear adjusting mechanism and bean grinder, gear adjusting mechanism includes upper subassembly and lower subassembly, upper subassembly includes hopper seat, hopper seat has a downward extension, and the outside of downward extension is equipped with a circle first mating tooth, lower subassembly includes cover body, and the middle part of cover body is equipped with a through cavity, and the top of cavity is equipped with a circle second mating tooth, and the downward extension of upper subassembly is inserted into the cavity of lower subassembly, so that upper subassembly can be axially moved and circumferential rotation relative to lower subassembly, and user only needs to move upper subassembly along the axial, can make first mating tooth and second mating tooth disengage or reengage, thereby release or lock circumferential position, realize zero point adjustment. This provides the zero point calibration ability of convenient and high precision for bean grinder, can solve the pain point that traditional bean grinder zero point is not stable and is difficult to restore accurately once displacement.

Description

Technical Field

[0001] This utility model relates to the field of coffee grinding equipment technology, specifically to a gear adjustment mechanism. Background Technology

[0002] Traditional coffee grinders may experience shifts in their internal speed adjustment mechanism after a period of use. For example, when a user adjusts the grinder to a certain setting, after some use or vibration, that setting may deviate from its initial position, resulting in inconsistent grind coarseness at the same setting. More specifically, the zero setting on a traditional grinder usually refers to the finest grind or calibration point. Once the zero setting shifts, it is often difficult to accurately restore it to its original position, which seriously affects the grinding accuracy and the quality of coffee brewing. Currently, once the grinder settings are set, they often lack the ability to flexibly change the zero point or redefine the starting point of the setting, limiting users' ability to adjust grinding parameters and failing to meet personalized or high-precision grinding needs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model proposes a gear adjustment mechanism that ensures that any gear, especially zero, can accurately return to the preset position, and allows users to adjust or recalibrate the zero position arbitrarily according to actual needs, thereby improving the grinding accuracy, consistency, and flexibility of the coffee grinder.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A gear adjustment mechanism, comprising:

[0006] The upper component includes a hopper seat, which has a downward extension and a ring of first mating teeth on the outer side of the downward extension.

[0007] The lower component includes a cover, a through cavity in the middle of the cover, and a ring of second mating teeth on the top of the cavity;

[0008] The downward extension of the upper component extends into the cavity of the lower component, allowing the upper component to move axially and rotate circumferentially relative to the lower component. The first and second mating teeth can mesh with each other when the upper and lower components are in the axial meshing position to limit the circumferential relative position between the upper and lower components, and disengage when the upper component moves axially to the disengagement position, thereby releasing the limitation.

[0009] Preferably, the bottom of the downward extension is provided with a buckle, and the middle of the cavity of the cover is provided with an annular protrusion that cooperates with the buckle. The cooperation between the buckle and the annular protrusion is used to prevent the upper component from completely disengaging from the lower component along the axial direction.

[0010] Preferably, the buckle is provided with an anti-movement protrusion, which cooperates with the annular protrusion to prevent the upper component from jumping along the axial direction during grinding.

[0011] Preferably, the upper component also includes a hopper, which is connected to the hopper seat via a positioning structure.

[0012] Preferably, the positioning structure includes a positioning groove on the hopper and a positioning post on the hopper seat, wherein the positioning groove and the positioning post cooperate with each other.

[0013] Preferably, the positioning structure includes a slot on the hopper and a protrusion on the hopper seat, with the slot and protrusion engaging.

[0014] Preferably, the upper component also includes a stop plate, which is attached to the top surface of the hopper seat.

[0015] Preferably, the lower component also includes an adjusting ring, which is sleeved on the outside of the cover and fixedly connected to the cover. The adjusting ring serves as an operating component when the gear adjustment mechanism rotates as a whole.

[0016] Preferably, the outer wall of the adjusting ring is provided with anti-slip texture.

[0017] Another objective of this invention is to provide a coffee grinder that includes the gear adjustment mechanism described above.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The gear adjustment mechanism comprises an upper component including a hopper seat and a lower component including a cover. The upper component can move axially and rotate circumferentially relative to the lower component. The hopper seat and the cover are respectively equipped with a first mating tooth and a second mating tooth. Users can simply move the upper component axially to disengage or re-engage the first and second mating teeth, thereby releasing or locking the circumferential position and achieving zero-point adjustment. This provides the grinder with convenient and high-precision zero-point calibration capabilities, solving the pain point of unstable zero points in traditional grinders and the difficulty in accurately restoring them once they have shifted. Users can flexibly calibrate and restore the zero point at any time according to the grinder's usage, thereby improving the grinder's grinding accuracy, consistency, and operational flexibility. Attached Figure Description

[0020] Figure 1 This is an exploded view of the gear adjustment mechanism of this utility model;

[0021] Figure 2 This is a perspective view of the lower component of this utility model;

[0022] Figure 3 This is a perspective view of the hopper seat of this utility model;

[0023] Figure 4This is a three-dimensional sectional view of the meshing state of the upper and lower components of the gear adjustment mechanism of this utility model.

[0024] Figure 5 This is a three-dimensional sectional view of the gear adjustment mechanism of this utility model in the disengaged state of the upper and lower components.

[0025] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0026] Attached image labels:

[0027] 1-Hopper; 11-Positioning groove; 12-Card slot; 2-Gate plate; 3-Hopper seat; 31-Downward extension; 32-First mating tooth; 33-Snap; 34-Anti-movement protrusion; 35-Positioning post; 36-Card protrusion; 4-Cover; 41-Second mating tooth; 42-Annular protrusion; 5-Adjusting ring; 51-Anti-slip texture. Detailed Implementation

[0028] 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 some embodiments of the present utility model, and not all embodiments. 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.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0030] The gear adjustment mechanism in this embodiment is mainly used in equipment such as coffee grinders that require precise adjustment of grinding fineness. Its core is to achieve zero-point adjustment and locking after adjustment by engaging and disengaging the meshing teeth through axial movement and circumferential rotation between the upper and lower components.

[0031] See Figures 1 to 6 This utility model provides a gear adjustment mechanism, including an upper component and a lower component;

[0032] The upper component includes a hopper seat 3, which has a downward extension 31. A first mating tooth 32 is provided on the outer side of the downward extension 31. The lower component includes a cover 4, which has a through cavity in the middle and a second mating tooth 41 on the top of the cavity.

[0033] The downward extension 31 of the upper component extends into the cavity of the lower component, allowing the upper component to move axially and rotate circumferentially relative to the lower component. The first mating tooth 32 and the second mating tooth 41 engage with each other when the upper and lower components are in the axially engaged position, defining the circumferential relative position between them. They disengage when the upper component moves axially to the disengaged position, thus releasing the constraint. Specifically, when the user needs to adjust the zero point, the upper component is lifted upwards in the axial direction, disengaging the first mating tooth 32 and the second mating tooth 41. At this time, the upper component can rotate circumferentially relative to the lower component to adjust the zero point position. After adjustment, the upper component is moved downwards to return to its original position, and the first mating tooth 32 and the second mating tooth 41 re-engage, thereby locking the adjusted circumferential relative position and achieving the purpose of locking the upper component.

[0034] This provides coffee grinders with convenient and high-precision zero-point calibration capabilities, solving the pain point of unstable zero points in traditional grinders and the difficulty in accurately restoring them once they have shifted. Users can flexibly calibrate and restore the zero point at any time according to the usage of the grinder, thereby improving the grinding accuracy, consistency, and usage flexibility of the grinder.

[0035] Based on the above embodiments, as a preferred technical solution, to prevent the upper component from completely detaching from the lower component along the axial direction, a latch 33 is provided at the bottom of the downward extension 31. Simultaneously, an annular protrusion 42 that engages with the latch 33 is provided in the middle of the cavity of the cover 4. See also Figures 1 to 6 When the upper component is lifted, the latch 33 will contact the annular protrusion 42, thereby restricting the axial upward movement of the upper component, effectively preventing the upper component from accidentally separating, and improving the integrity of the mechanism and operational safety.

[0036] Furthermore, to prevent the upper component from jumping axially during grinding, the latch 33 is provided with an anti-movement protrusion 34. The anti-movement protrusion 34 cooperates with the annular protrusion 42 to provide additional axial limiting or frictional damping, enhancing the axial stability of the upper component and effectively preventing axial jumping due to vibration when the grinder is operating, thus ensuring the stability and uniformity of grinding. When the mechanism is in the engaged state (see...), Figure 4The anti-moving protrusion 34 is positioned below the annular protrusion 42. When the upper assembly moves axially upward to disengage, the anti-moving protrusion 34 can smoothly pass over and be positioned above the annular protrusion 42 (see [link]). Figure 5 and Figure 6 The engagement of the anti-movement protrusion 34 and the annular protrusion 42 is designed to suppress minor axial runout of the upper assembly in the axially engaged position without affecting the full axial lifting and resetting movement of the upper assembly necessary for gear adjustment.

[0037] See Figure 1 The upper component also includes a hopper 1, which is used to hold the material to be ground, namely coffee beans. The hopper 1 is connected to the hopper base 3 through a positioning structure.

[0038] Specifically, such as Figure 1 The positioning structure includes a positioning groove 11 on the hopper 1 and a positioning post 35 on the hopper seat 3. The positioning groove 11 and the positioning post 35 cooperate to achieve precise positioning and reliable connection between the hopper 1 and the hopper seat 3. The positioning groove 11 is located at the bottom of the hopper 1, and the downward extension 31 of the hopper seat 3 has a through cavity. The positioning post 35 is disposed in the cavity of the downward extension 31.

[0039] As another specific implementation of the positioning structure, the positioning structure includes a slot 12 on the hopper 1 and a protrusion 36 on the hopper seat 3. The slot 12 and the protrusion 36 cooperate to achieve precise positioning and reliable connection between the hopper 1 and the hopper seat 3. See [link to relevant documentation]. Figure 1 and Figure 4 The slot 12 is located at the bottom of the hopper 1, and the protrusion 36 is disposed in the cavity of the downward extension 31. The positioning groove / positioning post or the slot / protrusion are two positioning structures that can be selected and used according to actual design requirements, and can be used simultaneously or as alternative solutions.

[0040] In this embodiment, the upper component also includes a stop plate 2, which is attached to the top surface of the hopper seat 3. The stop plate 2 is printed with scales, numbers, and / or symbols (see...). Figure 1 This feature is used to intuitively indicate the currently selected grinding level or coarseness, making it convenient for users to operate and identify.

[0041] In this embodiment, the lower component further includes an adjusting ring 5 (see Figure 1 The adjusting ring 5 is sleeved on the outside of the cover 4 and fixedly connected to the cover 4. The adjusting ring 5 is the operating component when the gear adjustment mechanism rotates as a whole. The user drives the lower component by holding and rotating the adjusting ring 5, and indirectly drives the upper component through the meshing of the teeth, so as to make circumferential adjustment.

[0042] Preferably, the outer wall of the adjusting ring 5 is provided with anti-slip texture 51 (see...). Figure 1The anti-slip texture 51 increases the friction between the adjustment ring 5 and the user's hand, improving the grip and anti-slip properties during operation, making the adjustment process more stable and comfortable.

[0043] This utility model also provides a coffee grinder, which, due to the adoption of a gear adjustment mechanism, has the functions of convenient and precise zero-point adjustment, preventing slippage and jumping, thereby improving the user experience and grinding quality.

[0044] Working principle:

[0045] In daily use, the upper and lower components are always in an axially engaged position, with the first mating tooth 32 and the second mating tooth 41 meshing with each other. This engagement locks the circumferential relative position between the upper and lower components, preventing them from rotating relative to each other. In this locked state, the entire gear adjustment mechanism, as a whole, can rotate circumferentially relative to the grinder body. This overall rotation directly drives the grinding components inside the grinder to move axially through the internal transmission mechanism, thereby changing the spacing between the grinding blades and achieving precise adjustment of the grind size. The internal transmission mechanism and grinding components of the grinder are common components in this field and will not be described in detail here. Because the upper and lower components are always engaged and locked during gear adjustment, their circumferential relative position remains stable, ensuring the accuracy of gear adjustment and reducing errors caused by relative looseness of internal components. This solves the problem of insufficient precision or easy drift in daily gear adjustment of traditional grinders, thus improving the consistency of grind size.

[0046] When the grinder's zero point needs to be calibrated, the user simply lifts the upper assembly upwards, moving it axially relative to the lower assembly until it disengages. At this point, the first and second mating teeth disengage, releasing the previously locked circumferential relative position. The upper assembly is now allowed to rotate freely relative to the lower assembly, allowing the user to adjust the zero point as needed. After adjustment, the user moves the upper assembly downwards to return it to its axial position, re-engaging the first and second mating teeth and locking the adjusted zero point position again.

[0047] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model, such as the tooth shape of the first mating tooth 32 and the second mating tooth 41 being rectangular, trapezoidal, or other tooth shapes capable of meshing and disengaging; the specific shape, quantity, and position of the buckle 33, the anti-movement protrusion 34, and the annular protrusion 42 being adjustable; and the positioning structure connecting the hopper 1 and the hopper seat 3 being threaded, should all be included within the protection scope of this utility model.

Claims

1. A gear adjustment mechanism, characterized in that, include: The upper component includes a hopper seat, the hopper seat having a downward extension portion, and a ring of first mating teeth provided on the outer side of the downward extension portion; The lower component includes a cover, the cover having a through cavity in the middle, and the top of the cavity having a ring of second mating teeth; The downward extension of the upper component extends into the cavity of the lower component, allowing the upper component to move axially and rotate circumferentially relative to the lower component. The first and second mating teeth can mesh with each other when the upper component and the lower component are in an axially engaged position to limit the circumferential relative position between the upper component and the lower component, and disengage when the upper component moves axially to a disengaged position, thereby releasing the limitation.

2. The gear adjustment mechanism according to claim 1, characterized in that, The bottom of the downward extension is provided with a buckle, and the middle of the cavity of the cover is provided with an annular protrusion that cooperates with the buckle. The cooperation between the buckle and the annular protrusion is used to prevent the upper component from completely detaching from the lower component along the axial direction.

3. The gear adjustment mechanism according to claim 2, characterized in that, The buckle is provided with an anti-movement protrusion, which cooperates with the annular protrusion to prevent the upper component from jumping axially during grinding.

4. The gear adjustment mechanism according to claim 1, characterized in that, The upper component also includes a hopper, which is connected to the hopper seat via a positioning structure.

5. The gear adjustment mechanism according to claim 4, characterized in that, The positioning structure includes a positioning groove on the hopper and a positioning post on the hopper seat, wherein the positioning groove cooperates with the positioning post.

6. The gear adjustment mechanism according to claim 4, characterized in that, The positioning structure includes a slot on the hopper and a protrusion on the hopper seat, wherein the slot and the protrusion engage.

7. The gear adjustment mechanism according to claim 1, characterized in that, The upper component also includes a stop plate, which is attached to the top surface of the hopper seat.

8. The gear adjustment mechanism according to claim 1, characterized in that, The lower component also includes an adjustment ring, which is sleeved on the outside of the cover and fixedly connected to the cover. The adjustment ring serves as an operating component when the gear adjustment mechanism rotates as a whole.

9. The gear adjustment mechanism according to claim 8, characterized in that, The outer wall of the adjusting ring is provided with anti-slip texture.

10. A coffee grinder, characterized in that, Includes the gear adjustment mechanism as described in any one of claims 1-9.

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