A portable coffee grinder

Abstract

This invention relates to the field of coffee grinders, and more particularly to a portable coffee grinder. It includes a body; a powder outlet is located on the lower side of the body; and a powder container is magnetically connected to the lower side of the body. This invention achieves the following: The design of the protruding support rod and the outer surface of the powder container creates a concave-convex surface, greatly improving the stability of the coffee grinder when held by the user, preventing slippage and the grinder from falling out of the hand, thus facilitating coffee grinding. By adjusting the support rod, its hook can be extended and engaged with the upper side of a round cup, allowing the powder container to be placed on the cup for coffee brewing. The operation is convenient, requiring no additional tools to complete the entire coffee brewing process, greatly improving the functionality of the hand-cranked coffee grinder, eliminating the need for additional tools, significantly reducing equipment operating costs, and significantly enhancing portability.

Description

Technical Field

[0001] This invention relates to the field of coffee grinders, and more particularly to a portable coffee grinder. Background Technology

[0002] In the process of brewing coffee at home, grinding coffee beans is a key step that determines the taste of coffee. Hand-cranked coffee grinders, with their features of not requiring electricity and being easy to carry, have become a common tool for many coffee lovers to grind coffee beans in non-fixed settings.

[0003] Existing hand-cranked coffee grinders have relatively limited functionality, only capable of grinding coffee beans. After grinding coffee with such a grinder, users must prepare separate coffee brewing equipment (such as a pour-over kettle, drip cup, French press, etc.), and transfer the ground coffee from the grinder's powder container to the filter cup of the brewing equipment before proceeding with subsequent steps such as pouring water and extraction. This results in the entire coffee brewing process requiring the use of multiple tools, which not only increases the user's equipment purchase costs—consumers need to spend money separately to buy grinders, brewing kettles, filter cups, filter papers, and other utensils—but also significantly increases the complexity and cumbersomeness of the operation. Summary of the Invention

[0004] To overcome the shortcomings of existing hand-cranked coffee grinders, which have limited functionality and require users to purchase multiple additional tools for coffee brewing, increasing user costs and adding complexity and tedium to operation, this invention provides a portable coffee grinder.

[0005] The technical solution is as follows: A portable coffee grinder includes a body; a powder outlet is provided on the lower side of the body; a powder hopper is magnetically connected to the lower side of the body; a retaining ring is also provided inside the powder hopper; a quick-release ring is detachably connected to the retaining ring; filter paper is sandwiched between the retaining ring and the quick-release ring; several through slots are provided on the retaining ring; several limiting blocks are provided on the upper and lower sides of the quick-release ring; several support rods are connected to the outside of the powder hopper; an adjustment component for adjusting the support rods is connected to the outside of the powder hopper; several first slots are provided on the outside of the body; a hook is provided at the upper end of each support rod; and a water outlet is provided on the lower side of the powder hopper.

[0006] Preferably, the adjustment assembly includes several fixed seats fixed to the outside of the powder hopper; each fixed seat is rotatably connected to a rotating block; and each support rod is rotatably connected to the corresponding rotating block.

[0007] Preferably, the support rod is made of low-carbon steel and has a galvanized surface.

[0008] Preferably, a magnet is provided on the contact surface between the rotating block and the support rod.

[0009] As a preferred option, the outer surface of the device is set with a frosted texture.

[0010] Preferably, it also includes a sliding shaft connected to the quick-release ring; several pin blocks are provided on the upper and lower sides of the sliding shaft; several second slots are provided on the quick-release ring; several five-sliding blocks are slidably connected between the sliding shaft and the quick-release ring; from top to bottom: the first sliding block and the second sliding block are jointly connected to a sealing component for sealing the powder hopper; intercepting rings are fixedly connected to the other three sliding blocks, and each intercepting ring is provided with a filter screen, and the filter screens on the three intercepting rings are spaced apart; the first sliding block is fixedly connected to the sliding shaft, and the other sliding blocks are slidably connected to the sliding shaft.

[0011] Preferably, the sealing assembly includes a guide ring and a sealing ring; from top to bottom: the first sliding block has a guide ring fixedly attached to it, and the guide ring has a feed inlet; the feed inlet is located below the powder outlet; the second sliding block has a sealing ring fixedly attached to it.

[0012] Preferably, it also includes a clamping ring connected to the quick-release ring; the lower side of the quick-release ring is connected to the clamping ring; a groove is provided on the lower side of the quick-release ring; a protrusion is provided on the upper side of the clamping ring; and filter paper is located between the quick-release ring and the clamping ring.

[0013] Preferably, the upper surface of the limiting block and the lower surface of the fixing ring are interference-fitted.

[0014] Preferably, a handle is provided on the lower side of the sliding shaft.

[0015] The beneficial effects of this invention are as follows: The design of the protruding support rod and the outer surface of the powder container creates a concave-convex surface, greatly improving the stability of the coffee grinder when held by the user. This prevents slippage and the grinder from slipping out of the hand, making grinding easier. The support rod can be extended by adjusting the components, and its hook can be secured to the upper side of the round cup, allowing the powder container to be placed on the cup for coffee brewing. This convenient operation requires no additional tools and completes the entire coffee brewing process, significantly improving the functionality of the hand-cranked coffee grinder. The absence of additional tools greatly reduces equipment operating costs and significantly enhances portability. By pushing the sliding shaft upwards, the three intercepting rings, guide rings, and sealing rings are separated and unfolded. The filters spaced apart on the three intercepting rings form a multi-level physical barrier, thus intercepting the coffee powder that falls into the powder compartment in layers, preventing the coffee powder from accumulating and affecting the subsequent brewing effect. Pulling the sliding shaft downwards causes the intercepting rings and sealing components to move downwards and retract, thereby sealing the powder compartment. This prevents coffee powder (especially finely ground coffee powder) from splashing out due to inertia when the user pulls out the powder compartment, thus avoiding coffee powder waste and increasing the difficulty of subsequent cleaning. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the portable coffee grinder of the present invention; Figure 2 This is a three-dimensional structural diagram of the combined body, powder hopper, fixing ring, quick-release ring, and clamping ring of the present invention. Figure 3 This is a diagram showing the unfolded state of the sliding block, intercepting ring, guiding ring, and sealing ring of the present invention; Figure 4 This is a three-dimensional structural diagram of the powder hopper, fixing ring, quick-release ring and sliding shaft combination of the present invention; Figure 5 This is a diagram showing the retracted state of the sliding block, intercepting ring, guide ring, and sealing ring of the present invention. Figure 6 This is a three-dimensional structural diagram of the combination of the fixing ring, quick-release ring, clamping ring, sliding shaft and sliding block of the present invention. Figure 7 This is a three-dimensional structural diagram of the combination of the retaining ring, quick-release ring, and clamping ring of the present invention; Figure 8 This is a diagram showing the installation state of the powder hopper according to the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1-Main body, 1001-Powder outlet, 1002-First slot, 2-Powder hopper, 2001-Water outlet, 101-Fixing ring, 10101-Through groove, 102-Quick release ring, 10201-Second slot, 10202-Limit block, 10203-Groove, 103-Pressure ring, 10301-Protrusion, 104-Sliding shaft, 10401-Pin block, 10402-Handle, 105-Sliding block, 106-Interception ring, 107-Guide ring, 10701-Feed inlet, 108-Sealing ring, 109-Filter paper, 201-Fixing base, 202-Rotating block, 203-Support rod. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1: A portable coffee grinder, such as Figures 1-8 As shown, it includes a body 1 and a powder hopper 2; a powder outlet 1001 is provided on the lower side of the body 1; the powder hopper 2 is magnetically connected to the lower side of the body 1, and a valve cover is provided on the lower side of the powder hopper 2. It also includes a fixing ring 101, a quick-release ring 102, filter paper 109, support rods 203, and an adjustment assembly; the fixing ring 101 is fixedly connected inside the powder chamber 2; the quick-release ring 102 is detachably connected to the fixing ring 101; filter paper 109 is sandwiched between the fixing ring 101 and the quick-release ring 102; four through slots 10101 are opened in the middle of the fixing ring 101; four limit blocks 10202 are provided on the upper and lower sides of the quick-release ring 102; six support rods 203 are connected to the outside of the powder chamber 2; the adjustment assembly is connected to the outside of the powder chamber 2; several first slots 1002 are opened on the outside of the body 1; each support rod 203 is provided with a hook at the upper end; and a water outlet 2001 is opened on the powder chamber 2.

[0020] In this embodiment, the user first places the filter paper 109 on the upper side of the fixing ring 101. Then, the user inserts the limiting block 10202 on the lower side of the quick-release ring 102 through the through groove 10101 on the lower side of the fixing ring 101. Next, the user rotates the quick-release ring 102, causing the limiting block 10202 to rotate, thus misaligning the limiting block 10202 with the through groove 10101. This clamps the filter paper 109 onto the powder container 2, preventing the quick-release ring 102 from detaching from the fixing ring 101 during use, which could cause the filter paper 109 to shift or fall off. The user then magnetically attaches the powder container 2 to the lower side of the machine body 1. The user can then hold the grinder to grind coffee beans. The coffee powder produced will fall into the powder container 2 through the powder outlet 1001. The filter paper 109 intercepts the bean, and in the initial state, the hook on the support rod 203 faces upwards. Therefore, the user only needs to insert the hook at the upper end of the support rod 203 into the corresponding first slot 1002. At this time, the support rod 203 will be vertically locked onto the outer surface of the powder container 2. Then, the user can hold the powder container 2 and the support rod 203 to perform the grinding operation. At this time, the support rod 203 protrudes from the outer surface of the powder container 2, making the outer surface of the powder container 2 form a concave-convex surface, which greatly improves the stability of the user's hand when holding the grinder and avoids problems such as slipping of the palm or the grinder slipping out of the hand, making it easier for the user to perform the grinding operation. After grinding, the user removes the powder container 2, and then rotates the support rod 203 out through the adjustment component, rotating the hook at the upper end of the support rod 203 to the downward position, and then... Figure 8 As shown: Users can place the coffee powder container 2 directly on the top of the round cup, and then attach the hook of the support rod 203 to the top of the round cup, thus setting up the coffee powder container 2 on the round cup for coffee brewing. When brewing, users only need to pour brewing water into the coffee powder container 2, and then the brewing water will mix with the coffee powder in the coffee powder container 2 to form liquid coffee. Then the liquid coffee will pass through the filter paper 109 and flow from the water outlet 2001 onto the round cup. The operation is convenient and does not require any additional auxiliary tools to complete the entire coffee brewing process, which greatly improves the functionality of the hand-cranked coffee grinder. It does not require any additional supporting tools, greatly reduces the cost of equipment use, and also significantly improves the portability of operation.

[0021] Furthermore, a valve cover is provided on the lower side of the powder hopper 2. When the grinder is not in use, the valve cover is placed on the lower side of the powder hopper 2 to block the water outlet 2001 and prevent external impurities from entering the powder hopper 2 and contaminating it.

[0022] In some optional implementations of this embodiment, such as Figures 1-3 and Figure 8 As shown, the adjustment assembly includes a fixed seat 201 and a rotating block 202; six fixed seats 201 are fixedly connected to the outside of the powder hopper 2; a rotating block 202 is rotatably connected to each fixed seat 201; each support rod 203 is rotatably connected to the corresponding rotating block 202.

[0023] In this embodiment, after the user removes the powder hopper 2, they grasp the support rod 203 and rotate the support rod 203 and the rotating block 202 to the outside of the machine body 1, turning the hook at the upper end of the support rod 203 out of the first slot 1002. Then, the support rod 203 is rotated 180° along the rotating shaft on the rotating block 202, thereby rotating the hook at the upper end of the support rod 203 to a downward position. Figure 8 As shown: Users can place the powder container 2 directly on the top of the round cup, and then attach the hook of the support rod 203 to the top of the round cup to set up the powder container 2 on the round cup for coffee brewing. The operation is convenient and does not require any additional auxiliary tools to complete the entire coffee brewing process.

[0024] In a further preferred embodiment of the present invention, the support rod 203 is made of low carbon steel and has a galvanized surface.

[0025] In this embodiment, the support rod 203 is made of low-carbon steel with high structural strength, which can meet the load-bearing requirements of the support rod 203. In addition, the surface is galvanized, which has strong corrosion resistance and long service life.

[0026] In a further preferred embodiment of the present invention, a magnet is provided on the contact surface between the rotating block 202 and the support rod 203.

[0027] In this embodiment, after the user rotates the support rod 203, the rotating block 202 and the fixed magnet will magnetically attract and fix the support rod 203, preventing the support rod 203 from rotating randomly and affecting the installation of the powder hopper 2.

[0028] In a further preferred embodiment of the present invention, the outer surface of the body 1 is provided with a frosted texture.

[0029] In this embodiment, the frosted body 1 improves the feel of the coffee grinder when held by the user, enhances user comfort, and the frosted texture has a more delicate and high-end visual effect, greatly improving the overall aesthetics of the coffee grinder, enhancing the product's grade, and meeting the needs of quality consumers.

[0030] Example 2: Based on Example 1, as follows Figures 2-7As shown, it also includes a sliding shaft 104, a sliding block 105, an intercepting ring 106, and a sealing assembly; the sliding shaft 104 is slidably connected to the middle of the quick-release ring 102; four pin blocks 10401 are provided on the upper and lower sides of the sliding shaft 104; four second slots 10201 are provided on the lower side of the quick-release ring 102; five sliding blocks 105 are slidably connected between the sliding shaft 104 and the quick-release ring 102; from top to bottom: the first sliding block 105 and the second sliding block 105 are jointly connected to the sealing assembly; the other three sliding blocks 105 are all fixedly connected to the intercepting ring 106, each intercepting ring 106 is provided with a filter screen, and the filter screens on the three intercepting rings 106 are spaced apart; the first sliding block 105 is fixedly connected to the sliding shaft 104, and the other sliding blocks 105 are slidably connected to the sliding shaft 104.

[0031] In this embodiment, considering that coffee powder naturally accumulates into a dense layer after falling into the powder container 2, the coffee powder in this accumulated state has extremely small gaps between particles and is unevenly distributed. This means that during brewing, the dense structure of the accumulated layer hinders the hot water from penetrating downwards, limiting its penetration to only the surface and shallow layers of coffee powder in the powder container 2. The coffee powder in the middle layer, which is not fully soaked by hot water, cannot effectively undergo the extraction reaction, and its flavor compounds (such as caffeine and organic acids) fail to dissolve fully. Some water-soluble impurities may flow out with the surface extract, ultimately resulting in incomplete extraction of flavor compounds and residual impurities in the brewed coffee, leading to insufficient coffee purity and severely affecting the taste and quality. Therefore, after the user magnetically installs the powder container 2 on the lower side of the machine body 1, the sliding... When the moving shaft 104 is pushed upward, the sliding shaft 104 slides upward, pushing the uppermost sliding block 105 upward, which in turn drives all the sliding blocks 105 to move upward and unfold. At this time, the uppermost sliding block 105 presses against the lower surface of the body 1, the three intercepting rings 106 separate from each other, the sealing component opens, and the pin block 10401 is inserted into the second slot 10201 on the lower side of the quick-release ring 102, thereby connecting the sliding shaft 104 with the pin of the quick-release ring 102 to prevent the sliding shaft 104 from sliding during subsequent use. Then, the user performs the coffee grinding operation. The coffee powder produced after grinding will fall into the powder compartment 2 through the sealing component. At this time, the filter screens set at intervals on the three intercepting rings 106 form a multi-level physical barrier, thereby intercepting the coffee powder that falls into the powder compartment 2 in layers, preventing the coffee powder from accumulating in the powder compartment 2 and affecting the subsequent brewing effect.

[0032] Furthermore, considering that the powder container 2 is magnetically connected to the main body 1, when the user pulls the powder container 2 out of the main body 1, the powder container 2 will bounce and shake as it detaches from the main body 1, causing the coffee powder (especially finely ground coffee powder) stored inside to splash due to inertia and scatter into the external environment, resulting in coffee powder waste and increasing the difficulty of subsequent cleaning. Therefore, before the user removes the powder container 2, the user should first pull the sliding shaft 104 downwards, thereby retracting the sliding block 105, which will cause the intercepting ring 106 and the sealing assembly to move downwards and retract to the desired position. Figure 5 As shown, the sealing component is in a blocked state, thus blocking the powder compartment 2. Therefore, when the user removes the powder compartment 2, the coffee powder inside will not float out. After the powder compartment 2 is removed, the user pushes the sliding shaft 104 upward to reset, which in turn causes the intercepting ring 106 and the sealing component to unfold and reset. During this process, the coffee powder will be lifted by the filter screen on the intercepting ring 106 to prevent the coffee powder from piling up, and then the coffee can be brewed.

[0033] In some optional implementations of this embodiment, such as Figures 2-7 As shown, the sealing assembly includes a guide ring 107 and a sealing ring 108; from top to bottom: the first sliding block 105 is fixedly connected to the guide ring 107, and the guide ring 107 is provided with a feed inlet 10701; the feed inlet 10701 is located below the powder outlet 1001; the second sliding block 105 is fixedly connected to the sealing ring 108.

[0034] In this embodiment, after the user magnetically installs the powder container 2 on the lower side of the machine body 1, pushing the sliding shaft 104 upward causes the three intercepting rings 106, guide rings 107, and sealing rings 108 to separate and unfold, opening the feed inlet 10701. Therefore, the coffee powder produced after grinding will fall from the powder outlet 1001 to the guide ring 107, and then from the feed inlet 10701 into the powder container 2. When the user pulls the sliding shaft 104 downward, thereby retracting the sliding block 105, the intercepting rings 106, guide rings 107, and sealing rings 108 will move downward and retract to the desired position. Figure 5 As shown in the figure, the feed inlet 10701 is blocked at this time.

[0035] Furthermore, after the coffee is brewed, the user can press down the uppermost sliding block 105, which in turn moves the sliding shaft 104, all the sliding blocks 105, the intercepting ring 106, the guide ring 107, and the sealing ring 108 downwards and retracts them. During this retraction process, the components form a collaborative squeezing structure, which applies squeezing force to the brewed and soaked coffee powder in the powder chamber 2, thereby fully squeezing out the residual liquid coffee adsorbed inside the coffee powder, maximizing the recovery of coffee liquid, and reducing the impact of residual liquid in the coffee powder on the subsequent cleaning process.

[0036] In a further preferred embodiment of the present invention, such as Figure 3 and Figure 7 As shown, it also includes a clamping ring 103; the lower side of the quick-release ring 102 is connected to the clamping ring 103; the lower side of the quick-release ring 102 has a groove 10203; the upper side of the clamping ring 103 has a protrusion 10301; and the filter paper 109 is located between the quick-release ring 102 and the clamping ring 103.

[0037] First, the user lays the filter paper 109 flat on the lower end face of the quick-release ring 102. Then, the user presses the clamping ring 103 along the axial direction to align with the lower side of the quick-release ring 102. At this time, the protrusion 10301 on the clamping ring 103 and the groove 10203 on the lower side of the quick-release ring 102 form a precise fit. As the protrusion 10301 is embedded in the groove 10203, the filter paper 109 is simultaneously pressed into the cavity of the groove 10203, thus achieving a tight fixation of the filter paper 109. This significantly improves the structural stability of the filter paper 109 after assembly and effectively avoids problems such as displacement and wrinkles of the filter paper 109.

[0038] In a further preferred embodiment of the present invention, such as Figure 2 and Figure 3 As shown, the upper surface of the limiting block 10202 is interference-fitted with the lower surface of the fixing ring 101.

[0039] In this embodiment, during the installation of the fixing ring 101 and the quick-release ring 102, when the user rotates the quick-release ring 102, it causes the limiting block 10202 to rotate, causing the limiting block 10202 to be misaligned with the through groove 10101. The upper surface of the limiting block 10202 and the lower surface of the fixing ring 101 form a tight interference contact. The radial pressure generated by the interference fit achieves a tight connection between the two. On the one hand, the interference fit can eliminate the assembly gap between the limiting block 10202 and the fixing ring 101, preventing the quick-release ring 102 from loosening circumferentially or moving axially due to vibration during use, thus ensuring the durability of the fastening effect. On the other hand, the axial preload generated by the interference fit will drive the limiting block 10202 to press the fixing ring 101 upward, causing the fixing ring 101 to move axially toward the quick-release ring 102, thereby forming a clamping force between the two, which reliably clamps the clamping ring 103 pre-assembled between the fixing ring 101 and the quick-release ring 102.

[0040] In a further preferred embodiment of the present invention, such as Figure 4 As shown, a handle 10402 is provided on the lower side of the sliding shaft 104.

[0041] In this embodiment, when adjusting the sliding shaft 104, the user can grasp the handle 10402 to move the sliding shaft 104 up and down, which facilitates the user's operation.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A portable coffee grinder, comprising a body (1); a powder outlet (1001) is provided on the lower side of the body (1); a powder container (2) is magnetically connected to the lower side of the body (1); characterized in that, It also includes a fixing ring (101) connected inside the powder hopper (2); a quick-release ring (102) is detachably connected to the fixing ring (101); filter paper (109) is sandwiched between the fixing ring (101) and the quick-release ring (102); several through slots (10101) are opened on the fixing ring (101); several limiting blocks (10202) are provided on the upper and lower sides of the quick-release ring (102); several support rods (203) are connected to the outside of the powder hopper (2); an adjustment component for adjusting the support rods (203) is connected to the outside of the powder hopper (2); several first slots (1002) are opened on the outside of the machine body (1); a hook is provided at the upper end of each support rod (203); and a water outlet (2001) is opened on the lower side of the powder hopper (2).

2. The portable coffee grinder according to claim 1, characterized in that, The adjustment assembly includes several fixed seats (201) fixed to the outside of the powder hopper (2); each fixed seat (201) is rotatably connected to a rotating block (202); each support rod (203) is rotatably connected to the corresponding rotating block (202).

3. A portable coffee grinder according to claim 2, characterized in that, The support rod (203) is made of low carbon steel and has a galvanized surface.

4. A portable coffee grinder according to claim 3, characterized in that, Magnets are provided on the contact surface between the rotating block (202) and the support rod (203).

5. A portable coffee grinder according to claim 1, characterized in that, The outer surface of the body (1) is set with a frosted texture.

6. A portable coffee grinder according to claim 1, characterized in that, It also includes a sliding shaft (104) connected to the quick-release ring (102); several pin blocks (10401) are provided on the upper and lower sides of the sliding shaft (104); several second slots (10201) are provided on the quick-release ring (102); several five-sliding blocks (105) are slidably connected between the sliding shaft (104) and the quick-release ring (102); from top to bottom: the first sliding block (105) and the second sliding block (105) are connected together to a sealing component for sealing the powder hopper (2); the other three sliding blocks (105) are all fixedly connected to an intercepting ring (106), each intercepting ring (106) is provided with a filter screen, and the filter screens on the three intercepting rings (106) are spaced apart; the first sliding block (105) is fixedly connected to the sliding shaft (104), and the other sliding blocks (105) are slidably connected to the sliding shaft (104).

7. A portable coffee grinder according to claim 6, characterized in that, The sealing assembly includes a guide ring (107) and a sealing ring (108); from top to bottom: the first sliding block (105) is fixedly connected to the guide ring (107), and the guide ring (107) is provided with a feed inlet (10701); the feed inlet (10701) is located below the powder outlet (1001); the second sliding block (105) is fixedly connected to the sealing ring (108).

8. A portable coffee grinder according to claim 6, characterized in that, It also includes a clamping ring (103) connected to the quick-release ring (102); the lower side of the quick-release ring (102) is connected to the clamping ring (103); a groove (10203) is provided on the lower side of the quick-release ring (102); a protrusion (10301) is provided on the upper side of the clamping ring (103); and filter paper (109) is located between the quick-release ring (102) and the clamping ring (103).

9. A portable coffee grinder according to claim 1, characterized in that, The upper surface of the limiting block (10202) is interference-fitted with the lower surface of the fixing ring (101).

10. A portable coffee grinder according to claim 6, characterized in that, A handle (10402) is provided on the lower side of the sliding shaft (104).

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