Powder cup sealing structure

Abstract

The utility model relates to a powder cup sealing structure, which comprises a rack, a sealing ring, a sealing ring, a sealing ring, a sealing ring and a sealing ring, and is characterized in that the rack is provided with a cavity with a downward opening; the sealing ring is arranged in the rack and on the periphery of the water inlet, and a first annular end face on the upper side of the sealing ring is attached to the top wall of the cavity; the powder cup is provided with a containing cavity with an upward opening, the powder cup is restrained in the rack, and the upper end face of the powder cup is attached to the second annular end face of the lower side of the sealing ring; the sealing ring is provided with an annular upper lip side and a lower lip side located below the upper lip side, the upper end face of the upper lip side is the first annular end face of the sealing ring, the lower end face of the lower lip side is the second annular end face of the sealing ring, and meanwhile the roots of the upper lip side and the lower lip side are connected. The head portions of the upper lip edge and the lower lip edge extend inwards and always tend to be away from each other in the vertical direction under the action of elasticity of the sealing ring. According to the utility model, the sealing effect can be ensured while the operation experience of a user is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of beverage preparation, and in particular relates to a powder cup sealing structure. Background Art

[0002] Most of the existing equipment for making coffee and other beverages is equipped with a powder cup sealing structure with a powder cup, a frame and a sealing ring, such as the Chinese utility model patent No. 202220130145.3 "A coffee powder cup and an Italian portable coffee machine having the same" (authorization announcement No. CN217243796U), in which the Italian portable coffee machine includes an upper cabin and a lower cabin that are screwed together and a coffee powder cup. The bottom of the upper cabin has a puncture needle, and a cavity for accommodating coffee capsules is formed between the upper cabin and the lower cabin, and the cavity can also accommodate the coffee powder cup. The coffee powder cup is detachably arranged in the cavity of the upper cabin and the lower cabin, and can be taken in and out. When the upper cabin and the lower cabin are screwed together, the top and bottom of the powder bin abut against the upper cabin and the lower cabin respectively to achieve axial limitation. The puncture needle cover of the upper cabin body is provided with a soft second sealing ring, and a third sealing ring is embedded on the outer side of the bottom of the upper cabin body. The top end of the water retaining cylinder of the powder bin cover abuts against the second sealing ring, and the puncture needle is located on the outer side of the powder bin cover as a whole. The puncture needle points from top to bottom to the top of the cover plate of the powder bin cover. The puncture needle is coaxial with the water retaining cylinder and extends into the water retaining cylinder but does not pass through the cover plate. The flange on the top of the powder bin abuts against the third sealing ring.

[0003] Another example is the Chinese utility model patent No. 202320929477.2, "A Pre-soaking Brewing Head of a Coffee Extraction Machine" (authorization announcement No. CN219846108U), which includes a cylinder body, a vertical brewing chamber is provided inside the cylinder body, a water inlet is provided on one side of the middle of the brewing chamber, a piston is provided at the upper end of the brewing chamber, the top of the piston is fixedly connected to the push block by a spring, a first mounting groove is provided at the top of the cylinder body corresponding to the brewing chamber, an adjustment mechanism is provided inside the first mounting groove, and the top of the push block is The bottom of the cylinder body is provided with a second mounting groove at an open position at the lower end of the brewing chamber, and a brewing handle is detachably mounted in the second mounting groove. The brewing handle comprises a funnel, and a handle is fixedly mounted on an outer wall of the funnel. A liquid outlet is provided at the bottom of the funnel, and the liquid outlet is threadedly connected to the diversion groove. A powder bowl is clamped inside the funnel, and a plurality of filtering holes are provided at the bottom of the powder bowl. A hanging ear is fixedly mounted on an upper side of the outer wall of the funnel, and the hanging ear is clamped with an inner wall of the second mounting groove. A sealing rubber ring is fixedly mounted in the second mounting groove at an open position corresponding to the funnel.

[0004] In the above-mentioned patents, the powder cup (also called the brewing handle) is sealed with the frame of the coffee machine through a sealing ring. However, in actual use, in order to ensure the sealing performance of the sealing ring, the powder cup needs to be pressed upward and tightly under the sealing ring when installing the powder cup. This requires the user to expend a lot of effort for installation (both installing and removing the powder cup require a lot of effort), which affects the user experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a powder cup sealing structure in view of the current status of the prior art, so as to improve the user's operating experience and ensure the sealing effect.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a powder cup sealing structure, including:

[0007] A frame having a chamber with an opening facing downward, wherein a water inlet is provided on a top wall of the chamber;

[0008] A sealing ring is disposed in the chamber of the frame and is located at the outer periphery of the water inlet, and a first annular end surface on the upper side of the sealing ring is in contact with the top wall of the chamber;

[0009] The powder cup has a cavity with an opening facing upwards for placing powder therein, the powder cup is constrained in the cavity of the frame, and the upper end surface of the powder cup is in contact with the second annular end surface on the lower side of the sealing ring; at the same time, the powder cup can move downward under the action of an external force and detach from the frame;

[0010] Features:

[0011] The sealing ring has an annular upper lip and a lower lip located below the upper lip. The upper end face of the upper lip is the first annular end face of the sealing ring, and the lower end face of the lower lip is the second annular end face of the sealing ring. At the same time, the roots of the upper and lower lips are connected, and the heads of the upper and lower lips extend inward, and under the action of the elasticity of the sealing ring itself, they always have a tendency to move away from each other in the up and down directions.

[0012] In this way, when the powder cup is constrained in the frame, the upper end surface of the powder cup is sealed with the frame through the sealing ring to form a sealed space connected with the water inlet. When water enters the sealed space through the water inlet, the water pressure formed can act on the upper and lower lip edges of the sealing ring, so that the heads of the upper and lower lips are further separated in the up and down directions, so that the first annular end surface and the second annular end surface of the sealing ring are further pressed against the frame and the upper end surface of the powder cup, thereby improving the sealing effect.

[0013] When the powder cup moves upward for installation, the upper and lower lip structures of the sealing ring are easily deformed by pressure, so that the user can easily install the powder cup into the frame;

[0014] When the powder cup moves downward to be removed, the upper and lower lips of the sealing ring are reset due to their own elasticity to prepare for the next powder cup installation.

[0015] Preferably, the top wall of the chamber of the frame is provided with an annular groove for the upper lip edge of the sealing ring to be inserted therein.

[0016] Preferably, the annular groove has an inner ring wall and an outer ring wall located outside the inner ring wall along the circumferential direction;

[0017] The root and the head of the upper lip of the sealing ring are respectively fitted with the outer wall and the inner wall of the annular groove;

[0018] The root of the lower lip of the sealing ring is in contact with the outer wall of the annular groove, and the head of the lower lip of the sealing ring is spaced apart from and opposite to the inner wall of the annular groove.

[0019] The lower lip edge which is spaced opposite to the inner wall of the annular groove is conducive to the water pressure in the sealing space acting on the upper part of the sealing ring and between the lower lip edges.

[0020] Preferably, the portion of the top wall of the chamber located within the annular groove is a horizontally arranged circular wall, and the water inlet mentioned above is provided at the center of the circular wall.

[0021] In the above solutions, preferably, the powder cup includes:

[0022] The outer cup has a first bottom wall with a liquid outlet and a first side wall extending upward from the periphery of the first bottom wall, and the outer cup is restrained with the frame in a detachable manner;

[0023] The inner cup is placed in the outer cup in a detachable manner, and has a second bottom wall with a filter hole and a second side wall extending upward from the periphery of the second bottom wall. The second side wall and the second bottom wall form a cavity for the powder cup, and the upper edge of the second side wall extends outward to form a flange, and the flange is supported on the first side wall of the outer cup. The upper end surface of the flange serves as the upper end surface of the powder cup and fits with the second annular end surface on the lower side of the sealing ring.

[0024] Preferably, the upper end surface of the flange is a curved surface with the inner and outer edges facing downward and the central part arching upward;

[0025] The shape of the second annular end surface at the lower side of the sealing ring matches the shape of the inner part of the curved surface, and the second annular end surface at the lower side of the sealing ring fits with the inner part of the curved surface. In this way, when the powder cup is installed upward, the upwardly arched curved surface of the flange can be easily and smoothly pressed against the lower side of the sealing ring in the posture of the second annular end surface bent at the lower side of the sealing ring, thereby improving the user's operating experience, and the upper end surface of the flange can better fit with the second annular end surface at the lower side of the sealing ring to ensure the sealing effect.

[0026] Preferably, the thickness of the lower lip of the sealing ring increases gradually from the inside to the outside in the vertical direction. In this way, when the powder cup is installed, the lower lip can be deformed along with the installation action of the powder cup to fit with the upper end surface of the powder cup; when in use, water pressure is formed on the upper part of the sealing ring and between the lower lip. At this time, since the thickness of the lower lip gradually decreases from the inside to the outside, the head of the lower lip is easier to deform and fit closely with the upper end surface of the powder cup, thereby further improving the sealing effect.

[0027] In addition, the curved upper end surface of the powder cup in the utility model is conducive to the deformation and combination of the lower lip edge.

[0028] In order to enable the powder cup to move downward and detach from the frame under the action of external force, preferably, the outer cup is provided with a flange extending outward relative to the first side wall, and there are at least two flanges arranged at intervals along the circumferential direction;

[0029] The inner side surface of the chamber of the frame is provided with protrusions at positions corresponding to the flanges, so that the corresponding flanges can be supported on the upper surface thereof. At this time, the upper end surface of the powder cup is in contact with the second annular end surface at the lower side of the sealing ring; and the protrusions are arranged so that the flange on the outer cup can rotate clockwise or counterclockwise along the upper surface thereof in a first circumferential direction and move downward until the flange is located between the corresponding two adjacent protrusions and is separated from the frame. When the powder cup needs to be installed, the flange on the powder cup is inserted upward between the corresponding two adjacent protrusions, and then the powder cup is rotated in a second circumferential direction opposite to the first circumferential direction, so that the powder cup can move upward, and finally, the flange on the powder cup is supported on the upper surface of the corresponding protrusion.

[0030] Preferably, the protrusion is in the shape of a strip extending along the first circumferential direction, and along the first circumferential direction, the upper surface of the protrusion has a horizontal first part and a second part extending downward from the edge of the first part, and the first part is supported by the flange so that the upper end surface of the powder cup fits with the second annular end surface on the lower side of the sealing ring. The design of the first part enables the flange on the powder cup to be stably supported on the protrusion, and the design of the second part facilitates the disassembly and assembly of the powder cup by rotation. In the utility model, the second part can be a downwardly inclined inclined surface or an arcuate surface.

[0031] To facilitate the rotation of the powder cup, preferably, the powder cup further comprises a handle extending outward from the first side wall of the outer cup. The user can hold the handle to drive the powder cup to rotate.

[0032] In the above-mentioned solutions, preferably, the powder cup sealing structure is used in a coffee machine.

[0033] Compared with the prior art, the utility model has the following advantages: when the powder cup is constrained in the frame, the upper end face of the powder cup is sealed with the frame through the sealing ring to form a sealed space connected with the water inlet. When water enters the sealed space through the water inlet, the water pressure formed can act on the upper and lower lip edges of the sealing ring, so that the heads of the upper and lower lips are further separated in the up and down directions, so that the first annular end face and the second annular end face of the sealing ring are further pressed against the frame and the upper end face of the powder cup, thereby improving the sealing effect.

[0034] When the powder cup moves upward for installation, the upper and lower lip structures of the sealing ring are easily deformed by pressure, so that the user can install the powder cup into the frame more easily, improving the user's operating experience;

[0035] When the powder cup moves downward to be removed, the upper and lower lips of the sealing ring are reset due to their own elasticity to prepare for the next powder cup installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0037] Figure 2 It is a structural schematic diagram of another viewing angle of the embodiment of the utility model;

[0038] Figure 3 It is a three-dimensional exploded view of an embodiment of the utility model;

[0039] Figure 4 A cross-sectional view of an embodiment of the utility model;

[0040] Figure 5 It is a cross-sectional view of the sealing ring in the embodiment of the utility model. DETAILED DESCRIPTION

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] like Figures 1 to 5 As shown, a preferred embodiment of the powder cup sealing structure of the present invention is shown. The powder cup sealing structure is used in a coffee machine and includes a frame 1, a sealing ring 2 and a powder cup 3.

[0043] Among them, the frame 1 has a chamber 10 with an opening facing downward, the top wall of the chamber 10 is a horizontally arranged circular wall 13, a water inlet 11 is provided in the center of the circular wall 13, and an annular groove 12 extending circumferentially with a notch facing downward is provided at the outer position of the circular wall 13. The annular groove 12 has an inner ring wall 121 and an outer ring wall 122 located circumferentially outside the inner ring wall 121, and the upper edge of the inner ring wall 121 is connected with the upper edge of the outer ring wall 122 through an annular surface.

[0044] The sealing ring 2 is arranged in the above-mentioned annular groove 12, and has an annular upper lip 2a and a lower lip 2b located below the upper lip 2a. The upper end face of the upper lip 2a serves as the first annular end face 21 on the upper side of the sealing ring 2 and fits with the annular surface of the annular groove 12. The root 21a of the upper lip 2a is connected to the root 21b of the lower lip 2b and fits with the outer wall 122 of the annular groove 12. The head 22a of the upper lip 2a and the head 22b of the lower lip 2b both extend inward, and under the action of the elasticity of the sealing ring 2 itself, they always have a tendency to move away from each other in the up and down directions. The thickness of the lower lip 2b in the up and down directions gradually increases from the inside to the outside. At the same time, the head 22a of the upper lip 2a fits with the inner wall 121 of the annular groove 12; the head 22b of the lower lip 2b is spaced opposite to the inner wall 121 of the annular groove 12. For details, please refer to Figure 4 , 5 .

[0045] The powder cup 3 comprises an outer cup 31 and an inner cup 32. The outer cup 31 comprises a first bottom wall 311 with a liquid outlet, a first side wall 312 extending upward from the periphery of the first bottom wall 311, and a handle 33 extending outward is provided on the first side wall 312. The outer cup 31 is restrained in the chamber 10 of the frame 1 in a detachable manner. The inner cup 32 is placed in the outer cup 31 in a detachable manner, and comprises a second bottom wall 321 with a filter hole, and a second side wall 322 extending upward from the periphery of the second bottom wall 321. The second side wall 322 and the second bottom wall 321 form an open cavity facing upward, for the powder to be placed therein, and the particle size of the powder is larger than the aperture of the filter hole on the second bottom wall 321, so that the powder cannot pass through the filter hole. The upper edge of the second side wall 322 extends outward to form a flange 323, which is supported on the first side wall 312 of the outer cup 31. The upper end surface of the flange 323, as the upper end surface of the powder cup 3, fits with the second annular end surface 22 at the lower side of the sealing ring 2. In this embodiment, the upper end surface of the flange 323 is a curved surface with the inner and outer edges facing downward and the central part arched upward. The shape of the second annular end surface 22 at the lower side of the sealing ring 2 matches the shape of the inner part of the curved surface, and the second annular end surface 22 at the lower side of the sealing ring 2 fits with the inner part of the curved surface.

[0046] like Figures 2 to 4As shown, in order to realize the disassembly and assembly of the powder cup 3, in this embodiment, the outer cup 31 of the powder cup 3 is provided with a flange 313 extending outward relative to the first side wall 312, and there are three flanges 313, which are arranged at intervals along the circumferential direction. The inner side surface of the chamber 10 of the frame 1 is respectively provided with a protrusion 14 corresponding to the position of each flange 313, so that the corresponding flange 313 can be supported on its upper surface. At this time, the upper end surface of the powder cup 3 is in contact with the second annular end surface 22 on the lower side of the sealing ring 2; and the protrusion 14 is arranged to allow the flange 313 on the powder cup 3 to rotate clockwise or counterclockwise along its upper surface and move downward until the flange 313 is located between the corresponding two adjacent protrusions 14 and is separated from the frame 1. Specifically, each protrusion 14 is in the shape of a strip extending along the first circumferential direction, and along the first circumferential direction, the upper surface of each protrusion 14 has a horizontal first portion 141 and a second portion 142 extending downwardly from the edge of the first portion 141. The first portion 141 is supported by the flange 313 so that the upper end face of the powder cup 3 fits with the second annular end face 22 on the lower side of the sealing ring 2.

[0047] When the powder cup 3 needs to be installed, the flange 313 on the powder cup 3 is aligned with the position between the two corresponding adjacent protrusions 14, and then the powder cup 3 is rotated along the second circumferential direction opposite to the first circumferential direction, so that the flange 313 on the powder cup 3 rotates along the second part 142 of the upper surface of the corresponding protrusion 14, and during the rotation, the powder cup 3 moves upward until the flange 313 on the powder cup 3 rotates to the first part 141 of the upper surface of the corresponding protrusion 14, and the installation of the powder cup 3 is completed. At this time, the upper end surface of the powder cup is sealed with the frame 1 through the sealing ring 2 to form a sealed space connected with the water inlet 11. When water enters the sealed space through the water inlet 11, the water pressure formed can act on the upper and lower lip edges of the sealing ring 2, so that the heads of the upper and lower lips are further separated in the up and down directions, so that the first annular end surface 21 and the second annular end surface 22 of the sealing ring 2 are further pressed against the annular surface of the annular groove 12 and the upper end surface of the powder cup, thereby improving the sealing effect; and during the installation of the powder cup 3, the upper and lower lip structures of the sealing ring 2 are easily deformed under pressure, so that the user can easily install the powder cup 3 into the frame 1, thereby improving the user's operating experience.

[0048] On the contrary, when the powder cup needs to be removed, the powder cup 3 can be rotated along the first circumferential direction, which is convenient for operation.

[0049] In the specification and claims of the present invention, terms indicating directions, such as "upper", "lower", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0050] The term "radial" is also used in the specification and claims of the present utility model, which means basically along the inward and outward direction, and is not limited to the radial direction passing through the center of the circle, and can also be slightly deviated from the radial direction.

Claims

1. A powder cup sealing structure, comprising: A frame (1) having a chamber (10) with an opening facing downward, wherein a water inlet (11) is provided on a top wall of the chamber (10); A sealing ring (2) is arranged in the chamber (10) of the frame (1) and is located at the outer periphery of the water inlet (11), and a first annular end surface (21) on the upper side of the sealing ring (2) is in contact with the top wall of the chamber (10); The powder cup (3) has a cavity with an opening facing upwards for placing powder therein. The powder cup (3) is restrained in the chamber (10) of the frame (1), and the upper end surface of the powder cup is in contact with the second annular end surface (22) on the lower side of the sealing ring (2); at the same time, the powder cup (3) can move downward under the action of an external force and detach from the frame (1); Features: The sealing ring (2) comprises an annular upper lip edge (2a) and a lower lip edge (2b) located below the upper lip edge (2a); the upper end face of the upper lip edge (2a) is the first annular end face (21) of the sealing ring (2); the lower end face of the lower lip edge (2b) is the second annular end face (22) of the sealing ring (2); at the same time, the roots of the upper and lower lips are connected, the heads of the upper and lower lips extend inward, and under the action of the elasticity of the sealing ring (2) itself, they always have a tendency to move away from each other in the upper and lower directions.

2. The powder cup sealing structure according to claim 1, characterized in that: The top wall of the chamber (10) of the frame (1) is provided with an annular groove (12) for the upper lip edge (2a) of the sealing ring (2) to be inserted therein.

3. The powder cup sealing structure according to claim 2, characterized in that: The annular groove (12) comprises an inner ring wall (121) and an outer ring wall (122) located outside the inner ring wall (121) along the circumferential direction; The root and the head of the upper lip (2a) of the sealing ring (2) are respectively fitted with the outer wall (122) and the inner wall (121) of the annular groove (12); The root of the lower lip edge (2b) of the sealing ring (2) is in contact with the outer wall (122) of the annular groove (12), and the head of the lower lip edge (2b) of the sealing ring (2) is spaced apart from and opposed to the inner wall (121) of the annular groove (12).

4. The powder cup sealing structure according to claim 2, characterized in that: The portion of the top wall of the chamber (10) located within the annular groove (12) is a horizontally arranged circular wall (13), and the water inlet (11) is provided at the center of the circular wall (13).

5. The powder cup sealing structure according to any one of claims 1 to 4, characterized in that: The powder cup (3) comprises: The outer cup (31) comprises a first bottom wall (311) with a liquid outlet and a first side wall (312) extending upward from the periphery of the first bottom wall (311), wherein the outer cup (31) is restrained together with the frame (1) in a detachable manner; The inner cup (32) is placed in the outer cup (31) in a detachable manner, and comprises a second bottom wall (321) with a filtering hole, and a second side wall (322) extending upward from the periphery of the second bottom wall (321), wherein the second side wall (322) and the second bottom wall (321) form a cavity for the powder cup (3), and the upper edge of the second side wall (322) extends outward to form a flange (323), wherein the flange (323) is supported on the first side wall (312) of the outer cup (31), and the upper end surface of the flange (323) serves as the upper end surface of the powder cup (3) and is in contact with the second annular end surface (22) on the lower side of the sealing ring (2).

6. The powder cup sealing structure according to claim 5, characterized in that: The upper end surface of the flange (323) is a curved surface with inner and outer edges facing downward and a central portion arched upward; The shape of the second annular end surface (22) on the lower side of the sealing ring (2) matches the shape of the inner part of the curved surface, and the second annular end surface (22) on the lower side of the sealing ring (2) fits the inner part of the curved surface.

7. The powder cup sealing structure according to claim 6, characterized in that: The thickness of the lower lip edge (2b) of the sealing ring (2) in the up-down direction gradually increases from the inside to the outside.

8. The powder cup sealing structure according to claim 5, characterized in that: The outer cup (31) is provided with a flange (313) extending outwardly relative to the first side wall (312), and there are at least two flanges (313) arranged at intervals in the circumferential direction; The inner side surface of the chamber (10) of the frame (1) is provided with protrusions (14) at positions corresponding to the respective flanges (313) so that the corresponding flanges (313) can be supported on their upper surfaces. At this time, the upper end surface of the powder cup (3) is in contact with the second annular end surface (22) at the lower side of the sealing ring (2); and the protrusions (14) are arranged so that the flange (313) on the outer cup (31) can rotate clockwise or counterclockwise along its upper surface and move downward until the flange (313) is located between two corresponding adjacent protrusions (14) and is separated from the frame (1).

9. The powder cup sealing structure according to claim 8, characterized in that: The protrusion (14) is in the shape of a strip extending along a first circumferential direction, and along the first circumferential direction, the upper surface of the protrusion (14) has a horizontal first portion (141) and a second portion (142) extending downward from the edge of the first portion (141), and the first portion (141) is supported by the flange (313) so that the upper end surface of the powder cup (3) fits with the second annular end surface (22) on the lower side of the sealing ring (2).

10. The powder cup sealing structure according to claim 5, characterized in that: The powder cup (3) further comprises a handle (33) extending outward from the first side wall (312) of the outer cup (31).

11. The powder cup sealing structure according to any one of claims 1 to 4, characterized in that: The powder cup sealing structure is used in a coffee machine.

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