A folding storage mechanism for a hand-cranked coffee grinder
By designing a foldable crank and handle storage structure on the hand-cranked coffee grinder and using magnetic attachments to fix it, the problem of large space occupation of portable coffee grinders is solved, achieving compact storage and stable use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOMBER COFFEE EQUIPMENT MANUFACTURING (ZHONGSHAN) CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-03
Smart Images

Figure CN224441123U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee grinders, and more specifically, to a folding and storage mechanism for a hand-cranked coffee grinder. Background Technology
[0002] With the increasing popularity of coffee culture, people's pursuit of coffee quality is constantly improving. In the past, traditional coffee grinding equipment was usually large and heavy, and was mainly used in commercial places or fixed coffee studios.
[0003] However, with changing lifestyles, especially in outdoor travel and office settings, the demand for the ability to grind coffee beans anytime, anywhere is gradually increasing. While portable grinders exist in current technology, their levers are horizontally connected to the grinder body, lacking a reasonable storage design, resulting in a large overall footprint and making them inconvenient to carry. Utility Model Content
[0004] The purpose of this utility model is to provide a folding and storage mechanism for a hand-cranked coffee grinder, which can quickly fold and store the crank and handle of the coffee grinder, making the stored coffee grinder compact, small in size, and easy to carry.
[0005] The embodiments of this utility model are implemented as follows:
[0006] This application provides a folding and storage mechanism for a hand-cranked coffee grinder, including a top cover, a rocker arm, and a handle. The top cover is rotatably mounted on the top of the coffee grinder and connected to the rotating shaft of the coffee grinder, and its top is provided with a receiving groove.
[0007] One end of the rocker arm is hinged to one side of the top cover, and the other end is vertically connected to the handle; the width of the rocker arm is adapted to the width of the receiving groove, and the length of the rocker arm is greater than the height of the coffee grinder, so that when the rocker arm is rotated downward to fit against the side wall of the coffee grinder, the handle can fit against the bottom of the coffee grinder.
[0008] Furthermore, based on the aforementioned scheme, the receiving groove has at least a first magnetic attractor embedded in its bottom wall; the rocker arm is made of a magnetic material that can attract each other with the first magnetic attractor; or the side of the rocker arm that contacts the receiving groove has a second magnetic attractor embedded in it, the second magnetic attractor having the opposite magnetic properties to the first magnetic attractor.
[0009] Furthermore, based on the aforementioned scheme, one side of the handle is rotatably connected to the rocker arm via a rotating component.
[0010] Furthermore, based on the aforementioned solution, when the handle is folded and stored, a third magnetic element is embedded in at least one side opposite to the bottom of the grinder; a fourth magnetic element is embedded in the bottom of the grinder, and the fourth magnetic element has the opposite magnetic properties to the third magnetic element.
[0011] Furthermore, based on the aforementioned scheme, a receiving cavity is provided on one side of the handle where the magnetic component is embedded, and a sealing cap is threaded into the receiving cavity; the two third magnetic components are respectively fixed to the inner bottom of the receiving cavity and the inner bottom of the sealing cap.
[0012] Furthermore, based on the aforementioned scheme, a hinge is provided on one side of the top cover, and one end of the rocker arm is rotatably connected to the hinge via a laterally arranged pivot; the receiving groove extends from the hinge towards the radial direction of the top cover.
[0013] Furthermore, based on the aforementioned scheme, the depth of the receiving groove is greater than or adapted to the thickness of the rocker arm, so that when the rocker arm is placed in the receiving groove, the top surface of the rocker arm is lower than or flush with the top surface of the top cover.
[0014] Furthermore, based on the aforementioned scheme, the handle has the same shape as the cross-section of the coffee grinder.
[0015] Furthermore, based on the aforementioned scheme, the cross-sectional dimensions of the handle are consistent with the cross-sectional dimensions of the coffee grinder.
[0016] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:
[0017] This application features a rocker arm with one end hinged to one side of the top cover and a handle at the other end. A receiving groove for the rocker arm is located on the top of the top cover. When grinding coffee, the rocker arm is placed in the receiving groove, and the handle is held to rotate the rocker arm, which in turn rotates the top cover, causing the shaft to rotate and grind coffee. The receiving groove also limits the rocker arm's position, improving stability during hand-cranked grinding. By designing the rocker arm's length to be greater than the grinder's height, when the rocker arm rotates downwards to fit against the grinder's side wall, the handle can fit against the bottom of the grinder. When not grinding, the rocker arm can be pulled out of the receiving groove and folded downwards, fitting against the grinder's side wall and the handle against the bottom, allowing for convenient and space-saving storage. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the folding and storage mechanism of the hand-cranked coffee grinder in an embodiment of the present invention when folded and stored.
[0020] Figure 2 This is a schematic diagram of the folding and storage mechanism of the hand-cranked coffee grinder in an embodiment of the present invention when it is unfolded and hand-cranked.
[0021] Figure 3 This is a cross-sectional view of the coffee grinder according to an embodiment of the present invention;
[0022] Figure 4 This is a cross-sectional view of the handle of an embodiment of the present utility model.
[0023] Icons: 1-Top cover, 11-Receiving slot, 12-First magnetic component, 13-Hinge, 2-Rockstick, 3-Handle, 31-Third magnetic component, 32-Receiving cavity, 33-Sealing cover, 34-Rotating component, 4-Fourth magnetic component, 5-Grinding machine. Detailed Implementation
[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0025] Please refer to Figures 1-4 The image shows a schematic diagram of the overall structure of the folding and storage mechanism of a hand-cranked coffee grinder.
[0026] This embodiment provides a folding and storage mechanism for a hand-cranked coffee grinder, including a top cover 1, a rocker arm 2 and a handle 3. The top cover 1 is rotatably mounted on the top of the coffee grinder 5 and connected to the rotating shaft of the coffee grinder 5. A receiving groove 11 is provided on its top.
[0027] One end of the rocker arm 2 is hinged to one side of the top cover 1, and the other end is vertically connected to the handle 3; the width of the rocker arm 2 is adapted to the width of the receiving groove 11, and the length of the rocker arm 2 is greater than the height of the coffee grinder 5, so that when the rocker arm 2 is rotated downward to fit against the side wall of the coffee grinder 5, the handle 3 can fit against the bottom of the coffee grinder 5.
[0028] The folding and storage mechanism of a hand-cranked coffee grinder 5 will now be further described in this exemplary embodiment.
[0029] In some embodiments, the top cover 1 is rotatably mounted on the top of the grinder 5 and connected to the rotating shaft of the grinder 5. The top cover 1 can drive the rotating shaft to rotate, thereby realizing the grinding of coffee beans. The top of the top cover 1 is provided with a receiving groove 11. One end of the rocker arm 2 is hinged to one side of the top cover 1, and the other end is vertically connected to the handle 3. The width of the rocker arm 2 is adapted to the width of the receiving groove 11. The rocker arm 2 is hinged to the top cover 1, so that the rocker arm 2 can be flipped into the receiving groove 11, and can also be pulled out from the receiving groove 11 and flipped downward. When the rocker arm 2 is flipped into the receiving groove 11, driving the rocker arm 2 to rotate can drive the top cover 1 to rotate. The length of the rocker arm 2 is greater than the height of the grinder 5, so that when the rocker arm 2 rotates downward to fit against the side wall of the grinder 5, the handle 3 can fit against the bottom of the grinder 5. When in use, the joystick 2 can be rotated out for grinding. When not in use, the joystick 2 can be rotated to fit against the side wall of the grinder 5 and the handle 3 can fit against the bottom, achieving folding and storage, greatly reducing storage space, making it easy to carry and move. This solves the problem of large space occupation and easy collision damage caused by the fixed setting of the joystick 2 and handle 3 in traditional hand-cranked grinders.
[0030] In a preferred embodiment, the aforementioned receiving groove 11 has at least a first magnetic element 12 embedded in its bottom wall; the rocker arm 2 is made of a magnetic material capable of attracting the first magnetic element 12; or a second magnetic element is embedded in the side of the rocker arm 2 that contacts the receiving groove 11, the second magnetic element having the opposite magnetic properties to the first magnetic element 12. When the rocker arm 2 is placed in the receiving groove 11, the rocker arm 2 and the receiving groove 11 attract each other, which can stably hold the rocker arm 2 in the receiving groove 11, preventing the rocker arm 2 from shaking during the grinding process, ensuring the stability of the grinding operation, and improving the user experience.
[0031] As a preferred implementation, one side of the handle 3 is rotatably connected to the rocker arm 2 via a rotating component 34. This structure allows the handle 3 to rotate relative to the rocker arm 2, enabling users to flexibly adjust the angle of the handle 3 according to their own operating habits and usage scenarios, making the grinding operation more effortless and convenient, and improving the comfort and convenience of use.
[0032] It should be noted that the aforementioned rotating component 34 can be a rotating shaft, which is flexibly rotated and passed through one end of the rocker arm 2, and a limiting part is provided at the outer end of the rotating shaft to prevent the rotating shaft from falling off, thus enabling flexible rotation.
[0033] In a preferred embodiment, when the handle 3 is folded and stored, at least one side opposite the bottom of the grinder 5 is fitted with a third magnetic element 31; a fourth magnetic element 4 is fitted into the bottom of the grinder 5, and the fourth magnetic element 4 has the opposite magnetic properties to the third magnetic element 31. When folded and stored, the two attract each other, which can firmly fix the handle 3 to the bottom of the grinder 5, preventing the handle 3 from loosening or shaking during storage and carrying, ensuring the stability of the folded state, and enhancing the storage effect.
[0034] Understandably, the handle 3 may have a third magnetic element 31 embedded in one side, or it may have a third magnetic element 31 embedded in both sides. In this embodiment, it is preferable to have a third magnetic element 31 embedded in both sides, so that no matter which side the handle 3 is rotated to during use, it can be immediately attracted and fixed to the bottom of the grinder 5 when stored, without the need to rotate it back to its original position.
[0035] In a preferred embodiment, the handle 3 has a receiving cavity 32 on one side where the magnetic component is embedded, and a sealing cap 33 is threaded into the receiving cavity 32; two third magnetic components 31 are respectively fixed to the inner bottom of the receiving cavity 32 and the inner bottom of the sealing cap 33. This design facilitates the installation of the third magnetic components 31, and when the magnetic component is damaged or its magnetism weakens, it can be easily replaced by unscrewing the sealing cap 33, reducing maintenance difficulty and cost, and extending the service life of the mechanism.
[0036] It should be noted that the handle 3 has a certain thickness, and a partition can be set between the two third magnetic parts 31, or they can be spaced a certain distance apart so that they do not affect each other.
[0037] In a preferred embodiment, a hinge 13 is provided on one side of the top cover 1, and one end of the rocker arm 2 is rotatably connected to the hinge 13 via a transversely arranged pivot. The receiving groove 11 extends radially from the hinge 13 toward the top cover 1. The hinge 13 and the transverse pivot ensure the flexibility and smoothness of the rocker arm 2's rotation, while the extension direction of the receiving groove 11 matches the rotation trajectory of the rocker arm 2, facilitating the smooth placement of the rocker arm 2 into the receiving groove 11 during use, without affecting the folding and storage operation of the rocker arm 2, thus improving the overall structural rationality.
[0038] In a preferred embodiment, the depth of the receiving groove 11 is greater than or adapted to the thickness of the rocker arm 2, so that when the rocker arm 2 is placed in the receiving groove 11, the top surface of the rocker arm 2 is lower than or flush with the top surface of the top cover 1. This keeps the top of the grinder 5 flat when the rocker arm 2 is placed, which not only improves the aesthetics but also prevents the rocker arm 2 from protruding from the top cover 1 and occupying extra space or interfering with other objects, making the overall structure more compact and the grinding more stable.
[0039] As a preferred embodiment, the handle 3 has the same cross-sectional shape as the coffee grinder 5. When folded for storage, the handle 3 fits better against the bottom of the coffee grinder 5, reducing the gap between them, making the overall structure more regular, further reducing the storage volume, and enhancing the compactness of storage.
[0040] As a preferred implementation, the cross-sectional dimensions of the handle 3 are the same as those of the coffee grinder 5. This allows the handle 3 to perfectly match the bottom of the coffee grinder 5 when folded for storage, forming a unified appearance. This not only improves aesthetics but also minimizes the overall volume after storage, making it more convenient to carry and store.
[0041] In this embodiment, the coffee grinder 5 is cylindrical and the handle 3 is disc-shaped. Both have the same cross-sectional dimensions, which reduces the space occupied by the coffee grinder 5 when folded for storage.
[0042] The working principle of this application embodiment:
[0043] When the hand-cranked coffee grinder 5 needs to be used, separate the crank 2 and handle 3 from the bottom and side walls of the grinder 5, and flip them upwards so that the crank 2 is placed in the receiving slot 11. At this time, the first magnetic component 12 and the second magnetic component are attracted to each other. Hold the handle 3 and turn the crank 2 to push the top cover 1 to rotate, which drives the shaft of the grinder 5 to rotate, thus grinding the coffee beans. When it is time to store the grinder, pull the crank 2 out of the receiving slot 11 and flip it downwards so that it fits against the side wall of the grinder 5. At the same time, turn the handle 3 so that it fits against the bottom of the grinder 5. At this time, the third magnetic component 31 and the fourth magnetic component 4 attract each other to fix the handle 3, completing the folding and storage. The crank 2 and handle 3 can be firmly fixed on the grinder 5.
[0044] The beneficial effects of the embodiments of this application are as follows:
[0045] By incorporating a rotatable top cover 1, a rocker arm 2, and a handle 3, the grinder 5 can be easily operated by rotating the rocker arm 2 out of the receiving slot 11 when needed. When not in use, the rocker arm 2 can be rotated downwards to fit against the side wall of the grinder 5, and the handle 3 can be attached to the bottom of the grinder 5, allowing for folding and storage of the rocker arm 2 and handle 3, significantly reducing storage space and facilitating carrying and transport. The first magnetic attachment 12 on the bottom wall of the receiving slot 11 cooperates with the second magnetic attachment on the rocker arm 2, securing the rocker arm 2 firmly within the receiving slot 11 to prevent wobbling and ensure stability during grinding. The handle 3 is rotatably connected to the rocker arm 2 via a rotating component 34, allowing the handle 3 to be adjusted as needed, further improving ease of use. Simultaneously, when folded for storage, the third magnetic attachment 31 on the handle 3 attracts the fourth magnetic attachment 4 on the bottom of the grinder 5, securing the handle 3 firmly to the bottom of the grinder 5 and preventing it from loosening during storage. The inclusion cavity 32 and sealing cover 33 on the handle 3 facilitate the installation and replacement of the third magnetic component 31; the hinge 13 on one side of the top cover 1 and the horizontally arranged pivot ensure the flexibility and stability of the rocker arm 2 rotation; the matching depth of the receiving groove 11 with the thickness of the rocker arm 2 makes the rocker arm 2 more flat and aesthetically pleasing when placed in the receiving groove 11, without taking up extra space; the consistency of the cross-sectional shape and size of the handle 3 and the grinder 5 makes the overall structure more compact after folding and storage, further reducing the storage volume.
[0046] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.
[0047] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.
Claims
1. A folding storage mechanism for a hand grinder, characterized in that, It includes a top cover, a rocker arm, and a handle. The top cover is rotatably mounted on the top of the coffee grinder and connected to the rotating shaft of the coffee grinder. A receiving groove is provided on its top. One end of the rocker arm is hinged to one side of the top cover, and the other end is vertically connected to the handle; the width of the rocker arm is adapted to the width of the receiving groove, and the length of the rocker arm is greater than the height of the coffee grinder, so that when the rocker arm is rotated downward to fit against the side wall of the coffee grinder, the handle can fit against the bottom of the coffee grinder.
2. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 1, characterized in that, The receiving groove has at least a first magnetic element embedded in its bottom wall; the rocker arm is made of a magnetic material that can attract the first magnetic element; or the side of the rocker arm that contacts the receiving groove has a second magnetic element embedded in it, the second magnetic element having the opposite magnetism to the first magnetic element.
3. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 1, characterized in that, One side of the handle is rotatably connected to the rocker arm via a rotating component.
4. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 3, characterized in that, When the handle is folded and stored, a third magnetic element is embedded in at least one side opposite to the bottom of the grinder; a fourth magnetic element is embedded in the bottom of the grinder, and the fourth magnetic element has the opposite magnetism to the third magnetic element.
5. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 4, characterized in that, The handle has a receiving cavity on one side where the magnetic component is embedded, and a sealing cap is threaded into the receiving cavity; the two third magnetic components are respectively fixed to the inner bottom of the receiving cavity and the inner bottom of the sealing cap.
6. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 1, characterized in that, A hinge is provided on one side of the top cover, and one end of the rocker arm is rotatably connected to the hinge via a horizontally arranged pivot; the receiving groove extends radially from the hinge towards the top cover.
7. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 6, characterized in that, The depth of the receiving groove is greater than or adapted to the thickness of the rocker arm, such that when the rocker arm is placed in the receiving groove, the top surface of the rocker arm is lower than or flush with the top surface of the top cover.
8. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 1, characterized in that, The handle has the same shape as the cross-section of the coffee grinder.
9. The folding and storage mechanism of the hand-cranked coffee grinder according to claim 8, characterized in that, The cross-sectional dimensions of the handle are the same as those of the coffee grinder.