Automatic powder bowl locking structure and pressure coffee machine

Abstract

The utility model provides an automatic powder bowl locking structure and a pressure coffee maker, and the automatic powder bowl locking structure comprises a brewing support provided with a brewing opening; the brewing head is arranged on the brewing support and matched with the brewing opening; the powder bowl rack is connected to the brewing head through a guide unit and is provided with a powder cup placing surface, and the guide unit is used for guiding the powder bowl rack to move in the center line direction of the brewing opening; the powder bowl part is provided with a powder cup clamping jaw; and the locking part comprises a driving motor and a locking assembly. A first gear is driven by a driving motor to drive an outer gear cylinder to rotate, and internal threads on the inner cylinder wall of the outer gear cylinder and external threads on the outer wall of the powder bowl rack are in threaded transmission; meanwhile, the powder bowl frame can only slide axially and cannot rotate, a user only needs to place the powder bowl part into the powder bowl frame, rotate a handle of the powder bowl part to enable the powder cup clamping jaw to be suspended on the powder cup placing face, and lift the powder bowl frame axially to enable the powder bowl part to be tightly attached to the brewing head, so that a sealed brewing cavity is formed, and the use experience of the user is improved conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to an automatic locking structure for a powder bowl and a pressure coffee machine. Background Art

[0002] With the improvement of living standards, coffee has gradually become a common drink in people's lives. As the pace of life accelerates, coffee machines that can quickly brew coffee are popular among people. Most existing Italian coffee machines grind coffee into powder and put it into a container, and then produce coffee liquid after extraction with high-temperature steam. Using this method to extract coffee requires grinding, filling and other steps, which is inefficient and time-consuming, and cannot meet the needs of life.

[0003] However, traditional coffee machines on the market typically require users to manually tighten the handle. First, place the powder basket under the basket holder, aligning the rotation angle before tightening it to lock it onto the holder. However, because the pressure seal test standard for the brewing chamber (the chamber where the coffee powder is placed) of a pressure coffee machine is generally 17 bar, the combination of the powder basket and the brewing head must be pressed very tightly to ensure a tight seal. This requires a lot of force to tighten the handle, resulting in a poor user experience. Utility Model Content

[0004] Based on this, in order to solve the problem that the user needs to use a lot of force to screw the powder basket handle into the powder basket support of the existing pressure coffee machine, resulting in a poor user experience, the utility model provides an automatic powder basket locking structure and a pressure coffee machine. The specific technical solution is as follows:

[0005] In one aspect, a powder bowl automatic locking structure includes:

[0006] A brewing bracket provided with a brewing port;

[0007] A brewing head, arranged on the brewing support and adapted to the brewing port;

[0008] A powder bowl rack is connected to the brewing head via a guide unit and is provided with a powder cup placement surface, wherein the guide unit is used to guide the powder bowl rack to move in the direction of the center line of the brewing port;

[0009] The powder bowl part is provided with a powder cup claw;

[0010] The locking component includes a driving motor and a locking assembly, wherein the locking assembly includes a first gear arranged at the output end of the driving motor, an external gear cylinder meshing with the first gear, and a threaded transmission unit, wherein the threaded transmission unit includes an internal thread arranged on the inner wall of the external gear cylinder, and an external thread arranged on the outer wall of the powder bowl rack.

[0011] The above-mentioned automatic locking structure of the powder bowl drives the first gear through the driving motor, driving the outer gear cylinder to rotate, and utilizes the internal thread of the inner cylinder wall of the outer gear cylinder and the external thread of the outer wall of the powder bowl rack for threaded transmission; at the same time, the guide unit is used to guide the powder bowl rack to move in the center line direction of the brewing port, and the powder bowl rack can only slide axially and cannot rotate. The user only needs to place the powder bowl component into the powder bowl rack, rotate the handle of the powder bowl component to suspend the powder cup claw on the powder cup placement surface, and the powder bowl rack is lifted axially to make the powder bowl component close to the brewing head, thereby forming a sealed brewing chamber, which is convenient for improving the user experience.

[0012] Furthermore, the guide unit includes an axial guide rail arranged on the inner wall of the powder bowl rack, and an axial guide groove arranged on the brewing head.

[0013] Furthermore, the powder cup placement surface is provided with an inverted L-shaped flange; the powder cup claw is a flange block protruding from the powder bowl component.

[0014] Furthermore, the powder bowl component includes a powder bowl member and a powder cup rack assembly for supporting the powder bowl member, and the powder cup claws are three flange blocks protruding from the powder cup rack assembly.

[0015] Furthermore, the brewing head includes a mounting plate for connecting to the brewing bracket, and a brewing end protruding from the mounting plate and adapted to the brewing port, the brewing end is provided with a brewing sealing assembly, and the brewing sealing assembly includes a brewing sealing ring adapted to the sealing surface of the powder bowl, and a brewing cover adapted to the brewing cavity of the powder bowl component.

[0016] Furthermore, the brewing end is provided with a water outlet channel, and the brewing cover is provided with a water outlet hole; the water outlet channel is connected to the hot water pipe through a back pressure valve assembly; the back pressure valve assembly is subjected to the impact force of water pressure to connect the water outlet channel with the hot water pipe.

[0017] Furthermore, the brewing end is provided with an installation cavity; the back-pressure valve assembly includes a back-pressure valve cover, a valve core body, a valve core seat, a valve core spring, and a back-pressure sealing ring arranged in the installation cavity; the back-pressure valve cover is provided with a water outlet cavity connected to the water outlet channel, and a water inlet connected to the hot water pipe, the valve core body is installed on the valve core seat, the valve core spring presses the valve core seat to push the valve core body toward the water inlet, and the back-pressure sealing ring is used to seal the installation gap between the back-pressure valve cover and the brewing end.

[0018] Furthermore, the brewing port of the brewing bracket is provided with a sliding lower limit surface, and the sliding lower limit surface is used to limit the downward rotating end surface of the external thread.

[0019] Furthermore, the inverted L-shaped flange is provided with an introduction slope.

[0020] On the other hand, a pressure coffee machine includes a coffee machine body and an automatic locking structure for a powder bowl. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but rather the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0022] Figure 1 This is a cross-sectional view of the structure of the automatic locking structure of the powder bowl according to one embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the automatic locking structure of the powder bowl according to one embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a powder bowl rack according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Back pressure valve assembly; 2. Brewing head; 3. Brewing seal assembly; 4. First gear; 5. External gear cylinder; 6. Powder bowl rack; 7. Drive motor; 8. Brewing bracket; 9. Powder bowl components;

[0027] 101, back pressure valve cover; 102, valve core body; 103, valve core seat; 104, valve core spring; 105, back pressure sealing ring;

[0028] 301, brewing sealing ring; 302, brewing cover;

[0029] 901, powder bowl; 902, powder cup holder assembly;

[0030] 2011, axial guide groove; 3011, brewing sealing surface; 5011, internal thread; 6011, axial guide rail; 6012, external thread; 6013, powder cup placement surface; 8011, sliding lower limit surface; 9011, powder bowl sealing surface; 9021, powder cup clamping claw. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0035] On the one hand, if Figure 1 and Figure 2 As shown, an automatic locking structure for a powder bowl in one embodiment of the present invention includes:

[0036] The brewing support 8 is provided with a brewing port;

[0037] A brewing head 2, which is arranged on the brewing support 8 and adapted to the brewing port;

[0038] The powder bowl rack 6 is connected to the brewing head 2 via a guide unit and is provided with a powder cup placement surface 6013. The guide unit is used to guide the powder bowl rack 6 to move in the direction of the center line of the brewing port;

[0039] The powder bowl component 9 is provided with a powder cup claw 9021;

[0040] The locking component includes a drive motor 7 and a locking assembly, the locking assembly includes a first gear 4 arranged at the output end of the drive motor 7, an external gear cylinder 5 meshing with the first gear 4, and a threaded transmission unit, the threaded transmission unit includes an internal thread 5011 arranged on the inner cylinder wall of the external gear cylinder 5, and an external thread 6012 arranged on the outer wall of the powder bowl rack 6.

[0041] The above-mentioned automatic locking structure of the powder bowl drives the first gear 4 through the driving motor 7, driving the outer gear cylinder 5 to rotate, and uses the internal thread 5011 of the inner cylinder wall of the outer gear cylinder 5 and the external thread 6012 on the outer wall of the powder bowl rack 6 for threaded transmission; at the same time, the guide unit is used to guide the powder bowl rack 6 to move in the center line direction of the brewing port. The powder bowl rack 6 can only slide axially and cannot rotate. The user only needs to place the powder bowl component 9 into the powder bowl rack 6, rotate the handle of the powder bowl component 9 to suspend the powder cup claw 9021 on the powder cup placement surface 6013, and the powder bowl rack 6 is lifted axially to make the powder bowl component 9 close to the brewing head 2, thereby forming a sealed brewing chamber, which is convenient for improving the user experience.

[0042] In one embodiment, the guide unit includes an axial guide rail 6011 provided on the inner wall of the powder bowl holder 6 and an axial guide groove 2011 provided on the brewing head 2. Thus, because the external gear barrel 5 can only rotate and not move axially, the axial guide rail 6011 of the powder bowl holder 6 is confined within the axial guide groove 2011 of the brewing head 2, allowing the powder bowl holder 6 to slide axially and not rotate. When the internal thread 5011 rotates forward or reverse, the external thread 6012 drives the powder bowl holder 6 to rise or fall axially.

[0043] In one embodiment, the powder cup placement surface 6013 is provided with an inverted L-shaped flange; the powder cup clamping claw 9021 is a flanged block protruding from the powder bowl component 9. Thus, when a user inserts the powder bowl component 9 into the powder bowl rack 6 through the gap in the powder cup placement surface 6013, the user needs to rotate the powder bowl component 9 so that the powder cup clamping claw 9021 is suspended on the powder cup placement surface 6013. The inverted L-shaped flange limits the rotation angle of the powder bowl component 9, allowing the powder cup clamping claw 9021 to be stably suspended on the powder cup placement surface 6013.

[0044] In one embodiment, the powder bowl component 9 includes a powder bowl component 901 and a powder cup holder assembly 902 for supporting the powder bowl component 901 , and the powder cup claws 9021 are three flange blocks protruding from the powder cup holder assembly 902 .

[0045] In one embodiment, the brewing head 2 includes a mounting plate for connecting to the brewing support 8, and a brewing end protruding from the mounting plate and adapted to the brewing port. The brewing end is provided with a brewing sealing assembly 3, which includes a brewing sealing ring 301 adapted to the powder bowl sealing surface 9011, and a brewing cover 302 adapted to the brewing cavity of the powder bowl component 9. In this way, the powder bowl support 6 is axially lifted, so that the powder bowl component 9 is tightly attached to the brewing head 2, and the brewing sealing surface 3011 on the brewing sealing ring 301 and the powder bowl sealing surface 9011 are pressurized and sealed, thereby forming a sealed brewing cavity.

[0046] In one embodiment, the brewing end is provided with a water outlet channel, and the brewing cover is provided with a water outlet hole; the water outlet channel is connected to the hot water pipe through the back pressure valve assembly 1. In this way, the back pressure valve assembly 1 is subjected to the impact of water pressure to connect the water outlet channel with the hot water pipe.

[0047] In one embodiment, the brewing end is provided with an installation cavity; the back-pressure valve assembly 1 includes a back-pressure valve cover 101, a valve core 102, a valve core seat 103, a valve core spring 104, and a back-pressure sealing ring 105 disposed in the installation cavity; the back-pressure valve cover 101 is provided with a water outlet cavity connected to a water outlet channel and a water inlet connected to a hot water pipe; the valve core 102 is mounted on the valve core seat 103; the valve core spring 104 presses the valve core seat 103, causing the valve core 102 to push toward the water inlet; and the back-pressure sealing ring 105 is used to seal the installation gap between the back-pressure valve cover 101 and the brewing end. Thus, when the on-off valve of the hot water pipe is opened, the water pressure impact force overcomes the elastic force of the valve core spring 104, the valve core 102 moves away from the water inlet, the water outlet channel is connected to the hot water pipe, and hot water flows from the water outlet channel into the brewing cavity.

[0048] In one embodiment, the brewing port of the brewing support 8 is provided with a sliding lower limit surface 8011, which is used to limit the downward rotation end surface of the external thread 6012. Specifically, when the powder bowl holder 6 moves axially downward, the powder bowl component 9 stops sealing. The powder bowl holder 6 continues to move downward, and when its lower end surface moves to the sliding lower limit surface 8011, the movement is blocked and stops. When the powder bowl holder 6 moves axially upward, the powder bowl component 9 presses against the brewing sealing surface 3011 to seal, and the brewing sealing surface 3011 is the upper limit surface of the mechanism operation.

[0049] In one embodiment, a motor current analysis circuit is used in conjunction with the brewing sealing surface 3011 and the sliding lower limit surface 8011 to realize the limit function. Specifically, a travel switch is added to assist in limiting, making the automatic locking structure of the entire powder bowl more reliable.

[0050] like Figure 2 and Figure 3 As shown, in one embodiment, the inverted L-shaped flange is provided with an introductory slope. In this way, when the user rotates the powder bowl component 9, the introductory slope can guide the powder bowl components 9 placed at different heights to complete the rotation smoothly.

[0051] In another embodiment of the present invention, a pressure coffee machine includes a coffee machine body and a powder bowl automatic locking mechanism. The locking mechanism drives the powder bowl holder 6 to press against the powder bowl assembly 9, creating a pressure-sealed seal between the brewing sealing surface 3011 and the powder bowl sealing surface 9011, thereby enhancing the user experience.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An automatic locking structure for a powder bowl, characterized in that: include: A brewing support (8) is provided with a brewing port; A brewing head (2), arranged on the brewing support (8) and adapted to the brewing port; a powder bowl rack (6) connected to the brewing head (2) via a guide unit and provided with a powder cup placement surface (6013), wherein the guide unit is used to guide the powder bowl rack (6) to move in the direction of the center line of the brewing port; A powder bowl component (9) is provided with a powder cup clamping claw (9021); A locking component comprises a drive motor (7) and a locking assembly, wherein the locking assembly comprises a first gear (4) arranged at the output end of the drive motor (7), an external gear cylinder (5) meshing with the first gear (4), and a threaded transmission unit, wherein the threaded transmission unit comprises an internal thread (5011) arranged on the inner wall of the external gear cylinder (5) and an external thread (6012) arranged on the outer wall of the powder bowl rack (6).

2. The automatic locking structure of the powder bowl according to claim 1, characterized in that: The guide unit comprises an axial guide rail (6011) provided on the inner wall of the powder bowl rack (6), and an axial guide groove (2011) provided on the brewing head (2).

3. The automatic locking structure of the powder bowl according to claim 1, characterized in that: The powder cup placement surface (6013) is provided with an inverted L-shaped flange; The powder cup claw (9021) is a flange block protruding from the powder bowl component (9).

4. The automatic locking structure of the powder bowl according to claim 3, characterized in that: The powder bowl component (9) comprises a powder bowl component (901) and a powder cup stand assembly (902) for supporting the powder bowl component (901), and the powder cup claws (9021) are three flange blocks protruding from the powder cup stand assembly (902).

5. The automatic locking structure for a powder bowl according to claim 1, characterized in that: The brewing head (2) comprises a mounting plate for connecting to the brewing bracket (8), and a brewing end protruding from the mounting plate and adapted to the brewing port, the brewing end being provided with a brewing sealing assembly (3), the brewing sealing assembly (3) comprising a brewing sealing ring (301) adapted to the powder bowl sealing surface (9011), and a brewing cover (302) adapted to the brewing cavity of the powder bowl component (9).

6. The automatic locking structure for a powder bowl according to claim 5, characterized in that: The brewing end is provided with a water outlet channel, and the brewing cover is provided with a water outlet hole; The water outlet channel is connected to the hot water pipeline via a back pressure valve assembly (1); The back pressure valve assembly (1) is subjected to the impact force of the water pressure so that the water outlet channel is connected to the hot water pipeline.

7. The automatic locking structure for a powder bowl according to claim 6, characterized in that: The brewing end is provided with a mounting cavity; The back pressure valve assembly (1) comprises a back pressure valve cover (101) arranged in the installation cavity, a valve core body (102), a valve core seat (103), a valve core spring (104), and a back pressure sealing ring (105); The back pressure valve cover (101) is provided with a water outlet cavity communicated with a water outlet channel and a water inlet communicated with a hot water pipe. The valve core body (102) is installed on the valve core seat (103). The valve core spring (104) presses the valve core seat (103) to push the valve core body (102) toward the water inlet. The back pressure sealing ring (105) is used to seal the installation gap between the back pressure valve cover (101) and the brewing end.

8. The automatic locking structure for a powder bowl according to claim 1, characterized in that: The brewing port of the brewing support (8) is provided with a sliding lower limit surface (8011), and the sliding lower limit surface (8011) is used to limit the downward rotation end surface of the external thread (6012).

9. The automatic locking structure for a powder bowl according to claim 2, characterized in that: The inverted L-shaped flange is provided with a lead-in slope.

10. A pressure coffee machine, characterized in that: The invention comprises a coffee machine body and the automatic locking structure of the powder bowl according to any one of claims 1 to 9.

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