Portable coffee maker

Abstract

The utility model relates to a portable coffee machine, including the casing, water pressure increasing device, extraction device and open hollow cup body up and down, the casing has opened water inlet and water outlet the extraction device is provided with the extraction cavity for containing coffee powder or coffee capsule, the extraction device has opened the pressure water inlet of intercommunication extraction cavity and the coffee liquid export of intercommunication extraction cavity, the pressure water inlet intercommunication water outlet, the size of hollow cup body is greater than the size of casing, and the sliding connection structure is between hollow cup body and casing, when hollow cup body or casing slides to the use position, the bottom open mouth of hollow cup body and the top of casing mutually adhere or form the tiny liquid seal gap, make the inner chamber of hollow cup body form the water storage space, and the portable coffee machine realizes the dual function of use and storage through the sliding fit structure of casing and hollow cup body.

Description

Technical Field

[0001] This utility model relates to a portable coffee machine. Background Technology

[0002] Portable coffee machines, as portable devices, are widely used in travel, outdoor activities, and office settings due to their small size and ease of use. However, current portable coffee machines on the market still face the following technical challenges and require improvement: Portable coffee machines in the present technology are usually equipped with a built-in water tank to store water for brewing coffee. However, the water tank occupies a considerable amount of space inside the device, making it difficult to further reduce the size of the overall machine. Utility Model Content

[0003] The purpose of this invention is to provide a portable coffee machine that is easy to use and store, and whose size is reduced when stored.

[0004] The purpose of this utility model is achieved as follows: A portable coffee machine includes a casing, a water pressurization device, an extraction device, and a hollow cup body with open top and bottom. The casing has a water inlet and a water outlet. The water pressurization device is disposed inside the casing. The inlet of the water pressurization device is connected to the water inlet, and the outlet of the water pressurization device is connected to the water outlet. The extraction device is provided with an extraction chamber for containing coffee powder or coffee capsules. The extraction device has a pressurized water inlet connected to the extraction chamber and a coffee liquid outlet connected to the extraction chamber. The pressurized water inlet is connected to the water outlet. The size of the hollow cup is larger than the size of the housing, and the hollow cup and the housing are connected by a sliding connection structure. When the hollow cup or housing slides to the use position, the bottom opening of the hollow cup fits into the top of the housing or forms a tiny liquid seal gap. A small amount of liquid can be injected into this gap to form a liquid seal structure, so that the inner cavity of the hollow cup forms a water storage space. When the top of the casing is close to the top opening of the hollow cup, the hollow cup is fitted over the outside of the casing.

[0005] The portable coffee machine achieves dual functions of use and storage through a sliding fit structure between the casing and the hollow cup: When in use, the open bottom of the hollow cup fits or forms a gap with the top of the casing. Injecting a small amount of liquid into this gap creates a liquid seal, and the inner cavity of the hollow cup becomes a water storage space, making it convenient for users to add water and ensuring the stability of the extraction process; When stored, the hollow cup can slide along the casing and fit over the outside of the casing, significantly reducing the overall size and making it easy to carry and store.

[0006] The objective of this utility model can also be achieved by the following technical measures: Furthermore, the top outer wall of the housing is provided with an outward flange, and the bottom open position of the hollow cup is provided with an inward flange. When the hollow cup or housing slides to the use position, the outward flange is close to the inward flange, and the inner cavity of the hollow cup forms a water storage space. When the outward flange approaches the top open position of the hollow cup, the hollow cup is fitted onto the outside of the housing.

[0007] The portable coffee machine achieves dual functions of use and storage through the sliding fit structure between the casing and the hollow cup: when in use, the outer and inner flanges fit together to form a reliable seal, and the inner cavity of the hollow cup forms a water storage space, making it convenient for users to add water and ensuring the stability of the extraction process; when stored, the hollow cup can slide along the casing and fit over the outside of the casing, significantly reducing the overall size and making it easy to carry and store.

[0008] Furthermore, a first sealing ring is provided on the bottom surface of the outer flange. When the outer flange approaches the inner flange, the first sealing ring is tightly attached to the inner flange. The first sealing ring and the inner flange cooperate to form a reliable seal, and the hollow cup cavity constitutes a water storage space, which facilitates the user to add water and ensures the stability of the extraction process.

[0009] Furthermore, a second sealing ring is provided on the surface of the inner flange. When the outer flange approaches the inner flange, the second sealing ring is tightly attached to the outer flange. The second sealing ring and the outer flange cooperate to form a reliable seal, and the inner cavity of the hollow cup forms a water storage space, which facilitates the user to add water and ensures the stability of the extraction process.

[0010] Furthermore, a first sealing ring is provided on the bottom surface of the outward-flared edge, and a second sealing ring is provided on the surface of the inward-flared edge. When the outward-flared edge approaches the inward-flared edge, the first and second sealing rings are tightly fitted together. The tight fit between the first and second sealing rings forms a reliable seal, and the hollow cup cavity constitutes a water storage space, facilitating water addition for the user and ensuring the stability of the extraction process.

[0011] Furthermore, the bottom surface of the outer flange is provided with a magnet or a metal sheet that can be attracted by a magnet, and the surface of the inner flange is provided with a magnet or a metal sheet that can be attracted by a magnet.

[0012] By setting magnets or metal sheets that can be attracted by magnets on the outer and inner flanges respectively, the hollow cup body and the housing can be magnetically connected during use. The operation is simple and the positioning is accurate, which can enhance the sealing stability between the hollow cup body and the housing, prevent loosening or leakage during use, and improve the ease of assembly and the reliability of the structure.

[0013] Furthermore, the outer side of the bottom surface of the outward flange is provided with the first sealing ring, the inner side of the bottom surface of the outward flange is provided with the magnet or metal sheet, the inner side of the surface of the inward flange is provided with the second sealing ring, and the outer side of the surface of the inward flange is provided with the magnet or metal sheet.

[0014] The distribution of sealing and adsorption functional areas is more reasonable, which not only ensures the tight fit of the sealing ring, but also avoids mutual interference between the magnetic adsorption structure and the sealing structure, thereby improving the sealing performance and adsorption stability, and achieving a compact structure and reliable sealing effect.

[0015] Furthermore, the inner wall of the inner flange is provided with a first card at intervals, and the outer wall of the casing is provided with a second card at intervals. An entrance is formed between the second card and the second card. When the outer flange approaches the inner flange, the first card passes through the entrance and abuts against the second card, thereby locking the hollow cup body and the casing.

[0016] By setting a first card on the inner wall of the inner flange and a second card on the outer wall of the casing to form an inlet structure, when the hollow cup body slides to the use position, the first card passes through the inlet and abuts against the second card, achieving a mechanical locking connection between the hollow cup body and the casing. This structure further enhances the connection's firmness based on magnetic fixation, preventing the hollow cup body from loosening or falling off due to vibration or pressure changes during use, thus improving safety and stability.

[0017] Furthermore, the inner wall of the bottom opening of the hollow cup is provided with a first card at intervals, and the outer wall of the casing is provided with a second card at intervals. An entrance is formed between the second card and the second card. When the bottom opening of the hollow cup is in contact with or forms a gap with the top of the casing, the first card passes through the entrance and abuts against the second card, thereby locking the hollow cup and the casing.

[0018] Furthermore, the hollow cup body has a top flange at the top open position. When the outer flange approaches the top flange, the hollow cup body is fitted onto the housing.

[0019] By incorporating a top flap at the open top of the hollow cup body, the flap effectively prevents the cup body from shifting upwards or detaching from the main unit when it is folded and placed over the machine casing, thus preventing accidental separation between the casing and the cup body. This design prevents users from accidentally taking or losing the cup body, further enhancing the ease of use of the portable coffee machine.

[0020] The beneficial effects of this utility model are as follows: In use, the hollow cup body slides and fits snugly against the machine casing, with the first sealing ring and the second sealing ring tightly engaged. The inner cavity of the hollow cup body forms a water storage space, constituting the water tank of the portable coffee machine, ensuring the stability of the water storage and extraction process. In storage, the hollow cup body can be placed outside the machine casing, significantly reducing the overall volume and making it convenient to carry and store.

[0021] This invention achieves magnetic attraction by setting magnets or metal sheets on the outer and inner flanges, allowing the hollow cup body and the casing to automatically adhere and position themselves when slid to the use position, making operation convenient and sealing reliable.

[0022] This invention, by setting a mechanical clamping structure between the first card and the second card, further enhances the bonding strength on the basis of magnetic attraction, preventing the hollow cup body from loosening or falling off during use due to vibration or pressure changes, thus ensuring safety and stability in use.

[0023] This utility model features a top flange on the top of the hollow cup body, which effectively prevents the casing from detaching from the hollow cup body when stored, avoiding accidental separation or loss of parts, and improving the integrity and safety of the entire machine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the portable coffee machine of Example 1 (the hollow cup body is placed on the machine casing, i.e., the storage state).

[0025] Figure 2 Figure 1 The main view.

[0026] Figure 3 This is a schematic diagram of the portable coffee machine of Example 1 (the hollow cup body has a water storage space, i.e., the usage state).

[0027] Figure 4 for Figure 3 Another perspective diagram.

[0028] Figure 5 for Figure 3 Another perspective diagram.

[0029] Figure 6 This is a schematic diagram of the hollow cup body in Example 1.

[0030] Figure 7 This is a cross-sectional view (in use) of the portable coffee machine of Example 1.

[0031] Figure 8 This is a cross-sectional view (in its stowed state) of the portable coffee machine of Example 1.

[0032] Figure 9 This is a cross-sectional view of the hollow cup body of Example 1.

[0033] Figure 10 This is a cross-sectional view of the casing of Example 1.

[0034] Figure 11 This is a cross-sectional view (in use) of the portable coffee machine of Example 2.

[0035] Figure 12 This is a cross-sectional view (in its stowed state) of the portable coffee machine of Example 2.

[0036] Figure 13 This is a cross-sectional view of the hollow cup body in Example 2.

[0037] Figure 14 This is a cross-sectional view of the casing of Example 2.

[0038] Figure 15 This is a front view of the casing of Example 2. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1, combined with Figures 1 to 10 As shown, a portable coffee machine includes a housing 1, a water pressurization device, an extraction device, and a hollow cup body 2 with open top and bottom. The housing 1 has a water inlet 11 and a water outlet. The top outer wall of the housing 1 is provided with an outward flange 3, and the bottom surface of the outward flange 3 is provided with a first sealing ring 31. The water booster device is installed inside the housing 1. The inlet 61 of the water booster device is connected to the water inlet 11, and the outlet of the water booster device is connected to the water outlet. The extraction device is provided with an extraction chamber for containing coffee powder or coffee capsules. The extraction device has a pressurized water inlet 61 connected to the extraction chamber and a coffee liquid outlet 12 connected to the extraction chamber. The extraction device is connected to the housing 1, and the pressurized water inlet 61 is connected to the water outlet. The hollow cup body 2 has an inner flange 4 at the bottom opening, and a second sealing ring 41 is provided on the surface of the inner flange 4; The hollow cup body 2 is larger than the size of the housing 1, and the hollow cup body 2 and the housing 1 are slidably connected. The hollow cup body 2 or the housing 1 slides. When the outer flange 3 approaches the inner flange 4, the first sealing ring 31 and the second sealing ring 41 are tightly attached together, and the inner cavity of the hollow cup body 2 forms a water storage space. When the outer flange 3 approaches the top opening of the hollow cup body 2, the hollow cup body 2 is fitted onto the housing 1.

[0040] Furthermore, a magnet 32 ​​is provided on the bottom surface of the outer flange 3, and a metal sheet 42 that can be attracted by the magnet 32 ​​is provided on the surface of the inner flange 4.

[0041] Furthermore, the outer side of the bottom surface of the outer flange 3 is provided with the first sealing ring 31, the inner side of the bottom surface of the outer flange 3 is provided with the magnet 32, the inner side of the surface of the inner flange 4 is provided with the second sealing ring 41, and the outer side of the surface of the inner flange 4 is provided with the metal sheet 42.

[0042] Furthermore, a top flange 7 is provided at the top open position of the hollow cup body 2. When the outer flange 3 approaches the top flange 7, the hollow cup body 2 is fitted onto the housing 1.

[0043] In use, the user slides the hollow cup body 2 along the direction of the casing 1, so that the outer flange 3 is close to the inner flange 4. The magnet 32 ​​and the metal piece 42 attract each other, and the first sealing ring 31 and the second sealing ring 41 are tightly attached to form a reliable seal. At this time, the inner cavity of the hollow cup body 2 forms a water storage space, which constitutes the water tank of the portable coffee machine, realizing the functions of water storage and pressurized extraction. Through magnetic attraction, the hollow cup body 2 is effectively prevented from loosening or falling during use, improving the safety and stability of use.

[0044] In the storage state, the user slides the hollow cup body 2 in the opposite direction, so that the outer flange 3 is close to the top open position of the hollow cup body 2. The hollow cup body 2 is placed on the outside of the casing 1, thereby greatly reducing the overall volume and making it easy to carry and store. At the same time, the top flange 7 structure can effectively prevent the casing 1 from detaching from the hollow cup body 2, avoiding the user from accidentally taking or losing the hollow cup body 2.

[0045] When the portable coffee machine is in use, the user puts coffee powder or coffee capsules into the extraction chamber of the extraction device, then pours an appropriate amount of hot water into the hollow cup 2, and starts the water pressurization device. The pressurized hot water enters the extraction chamber through the outlet, fully contacts the coffee powder and extracts coffee liquid. The coffee liquid flows out through the coffee liquid outlet 12, and the coffee brewing is complete.

[0046] Example 2, combined with Figures 11 to 15 As shown, the difference between Example 2 and Example 1 is that: In this embodiment, the inner wall of the inner flange 4 is provided with a first card 5 at intervals, and the outer wall of the housing 1 is provided with a second card 6 at intervals. An entrance 61 is formed between the second card 6 and the second card 6. When the outer flange 3 approaches the inner flange 4, the first card 5 passes through the entrance 61 and abuts against the second card 6, thereby locking the hollow cup body 2 and the housing 1.

[0047] In use, the user rotates the hollow cup body 2 and slides it along the direction of the machine casing 1, causing the outer flange 3 to gradually approach the inner flange 4. The rotation facilitates the smooth entry of the first card 5 into the inlet 61. As the hollow cup body 2 continues to slide, the magnet 32 ​​and the metal piece 42 attract each other, while the first card 5 passes through the inlet 61 and abuts against the second card 6, thus securing the hollow cup body 2 to the machine casing 1. At this point, the first sealing ring 31 and the second sealing ring 41 are tightly fitted to form a reliable seal, and the inner cavity of the hollow cup body 2 forms a water storage space, constituting the water tank of the portable coffee machine for water storage and pressurized extraction. Through the combination of magnetic attraction and locking structure, the hollow cup body 2 is effectively prevented from loosening or falling during use, improving safety and stability.

[0048] When storing, the user gently rotates the hollow cup body 2 and slides it in the opposite direction, allowing the first card 5 to smoothly detach from the inlet 61, and the outer flange 3 gradually approaches the top opening of the hollow cup body 2. At this time, the hollow cup body 2 is fitted onto the outside of the casing 1, significantly reducing the overall volume and making it easier to carry and store. The top flange 7 structure further prevents the casing 1 from detaching from the hollow cup body 2, avoiding accidental removal or loss of the hollow cup body 2 by the user, and ensuring the integrity and safety of the entire device.

[0049] Example 3: A portable coffee machine includes a casing 1, a water pressurization device, an extraction device, and a hollow cup body 2 with open top and bottom. The casing 1 has a water inlet 11 and a water outlet. The water booster device is installed inside the casing 1. The inlet of the water booster device is connected to the water inlet (11), and the outlet of the water booster device is connected to the water outlet. The extraction device is provided with an extraction chamber for containing coffee powder or coffee capsules. The extraction device has a pressurized water inlet connected to the extraction chamber and a coffee liquid outlet 12 connected to the extraction chamber. The pressurized water inlet is connected to the water outlet. The size of the hollow cup body 2 is larger than the size of the housing 1, and the hollow cup body 2 and the housing 1 are connected by a sliding connection structure. When the hollow cup body 2 is slid to the use position, the bottom opening of the hollow cup body 2 forms a gap with the top of the casing 1. The gap is 0.02mm. A small amount of liquid can be injected into the gap to form a liquid sealing structure, so that the inner cavity of the hollow cup body 2 forms a water storage space. When the top of the housing 1 is close to the top opening of the hollow cup 2, the hollow cup 2 is fitted over the outside of the housing 1.

[0050] In use, the user slides the hollow cup body 2 along the direction of the casing 1. When the hollow cup body 2 is slid to the use position, the bottom opening of the hollow cup body 2 forms a tiny liquid seal gap with the top of the casing 1. The tiny liquid seal gap is 0.02mm. A small amount of liquid can be injected into the tiny liquid seal gap to form a liquid seal structure, so that the inner cavity of the hollow cup body 2 forms a water storage space, which constitutes the water tank of the portable coffee machine, realizing the functions of water storage and pressurized extraction.

[0051] In the storage state, the user slides the hollow cup body 2 in the opposite direction, so that the top of the casing 1 is close to the top opening of the hollow cup body 2. The hollow cup body 2 is then placed on the outside of the casing 1, which greatly reduces the overall volume and makes it easy to carry and store.

Claims

1. A portable coffee machine, comprising a casing (1), a water pressurization device, an extraction device, and a hollow cup body (2) with open top and bottom, characterized in that: The casing (1) has a water inlet (11) and a water outlet. The water booster is installed inside the casing (1). The inlet of the water booster is connected to the water inlet (11), and the outlet of the water booster is connected to the water outlet. The extraction device is provided with an extraction chamber for containing coffee powder or coffee capsules. The extraction device has a pressurized water inlet connected to the extraction chamber and a coffee liquid outlet (12) connected to the extraction chamber. The pressurized water inlet is connected to the water outlet. The size of the hollow cup body (2) is larger than the size of the housing (1), and the hollow cup body (2) and the housing (1) are connected by a sliding connection structure; When the hollow cup body (2) or the housing (1) slides to the use position, the bottom opening of the hollow cup body (2) fits into the top of the housing (1) or forms a small liquid seal gap, so that the inner cavity of the hollow cup body (2) forms a water storage space. When the top of the housing (1) is close to the top opening of the hollow cup (2), the hollow cup (2) is fitted outside the housing (1).

2. The portable coffee machine according to claim 1, characterized in that: The top outer wall of the housing (1) is provided with an outward flange (3), and the bottom open position of the hollow cup body (2) is provided with an inward flange (4). When the hollow cup body (2) or the housing (1) slides to the use position, the outward flange is close to the inward flange, and the inner cavity of the hollow cup body forms a water storage space. When the outward flange is close to the top open position of the hollow cup body, the hollow cup body is fitted outside the housing.

3. The portable coffee machine according to claim 2, characterized in that: The bottom surface of the outer flange (3) is provided with a first sealing ring (31). When the outer flange (3) approaches the inner flange (4), the first sealing ring (31) is tightly attached to the inner flange (4).

4. The portable coffee machine according to claim 2, characterized in that: The inner flange (4) is provided with a second sealing ring (41). When the outer flange (3) approaches the inner flange (4), the second sealing ring (41) is tightly attached to the outer flange (3).

5. The portable coffee machine according to claim 2, characterized in that: The bottom surface of the outer flange (3) is provided with a first sealing ring (31), and the surface of the inner flange (4) is provided with a second sealing ring (41). When the outer flange (3) approaches the inner flange (4), the first sealing ring (31) and the second sealing ring (41) are tightly attached together.

6. The portable coffee machine according to any one of claims 2-5, characterized in that: The bottom surface of the outer flange (3) is provided with a magnet (32) or a metal sheet that can be attracted by the magnet (32), and the surface of the inner flange (4) is provided with a magnet (32) or a metal sheet (42) that can be attracted by the magnet (32).

7. The portable coffee machine according to claim 6, characterized in that: The magnet (32) or metal sheet (42) is provided on the inner side of the bottom surface of the outer flange (3), and the magnet (32) or metal sheet (42) is provided on the outer side of the surface of the inner flange (4).

8. The portable coffee machine according to claim 6, characterized in that: The inner wall of the inner flange (4) is provided with a first card (5) at intervals, and the outer wall of the housing (1) is provided with a second card (6) at intervals. An entrance (61) is formed between the second card (6) and the second card (6). When the outer flange (3) approaches the inner flange (4), the first card (5) passes through the entrance (61) and abuts against the second card (6), thereby locking the hollow cup body (2) and the housing (1).

9. The portable coffee machine according to claim 1, characterized in that: The bottom opening of the hollow cup (2) is provided with a first card (5) at intervals on the inner wall, and the outer wall of the casing (1) is provided with a second card (6) at intervals. An entrance (61) is formed between the second card (6) and the second card (6). When the bottom opening of the hollow cup (2) is in contact with the top of the casing (1) or a gap is formed, the first card (5) passes through the entrance (61) and abuts against the second card (6), thereby locking the hollow cup (2) and the casing (1).

10. The portable coffee machine according to claim 2, characterized in that: The hollow cup body (2) has a top flange (7) at the top open position. When the outer flange (3) approaches the top flange (7), the hollow cup body (2) is fitted onto the casing (1).

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