Stamping type coffee filter

Abstract

The utility model provides a stamping type coffee filter, and relates to the technical field of coffee making tools. The filter comprises a filter shell, a water storage cavity used for storing hot water and a powder storage cavity used for storing coffee powder are formed in the filter shell, and a flow guide channel communicated with the water storage cavity and the powder storage cavity is formed in the adjacent position of the water storage cavity and the powder storage cavity; wherein a first opening and a second opening are respectively formed in the upper end and the lower end of the filter shell, the first opening and the second opening are respectively communicated with the water storage cavity and the powder storage cavity, and a filtering piece is detachably arranged at the second opening; the mounting part is detachably arranged at the first opening; the impact assembly comprises an impact part, an elastic energy storage part and a trigger switch, the impact part is arranged in the water storage cavity in a sliding mode, the fixed end and the movable end of the elastic energy storage part are connected with the installation piece and the impact part respectively, and the trigger switch is arranged on the outer side face of the installation piece. According to the filter, the time required for coffee making is greatly shortened, and long-time contact between hot water and coffee powder is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of coffee making tools, and more specifically, to a stamping type coffee filter. Background Technology

[0002] A coffee filter plays a crucial role in the coffee-making process, its main function being the effective separation of coffee liquid from coffee grounds. When hot water is poured onto coffee grounds, the coffee filter, thanks to its material and structural characteristics, precisely traps the coffee grounds, allowing only the extracted coffee liquid to flow smoothly into the container below. This not only removes solid impurities from the coffee, resulting in a purer and smoother taste, but also prevents coffee grounds from mixing into the coffee liquid, affecting its appearance and drinking experience, thus ensuring the final coffee has excellent quality and flavor.

[0003] In existing coffee filters, the structure mainly comprises a water storage chamber and a coffee storage chamber, with the water storage chamber located above the coffee storage chamber. During the coffee brewing process, the hot water stored in the water storage chamber flows naturally into the coffee storage chamber under the pull of gravity, and then slowly flows out through the coffee grounds layer, ultimately forming a drinkable coffee liquid.

[0004] However, this structure, which relies solely on gravity to propel hot water into the coffee reservoir, has significant drawbacks. Firstly, the flow rate of the hot water is difficult to control due to gravity, easily resulting in excessively slow flow. This significantly extends the coffee-making time, requiring consumers to wait for extended periods, greatly reducing convenience and efficiency. Secondly, the slow flow rate causes prolonged contact between the coffee grounds and hot water, leading to the over-dissolution of undesirable flavor compounds, disrupting the coffee's original flavor balance, resulting in a bitter and unpleasant taste that fails to meet the demand for high-quality coffee. Utility Model Content

[0005] The purpose of this invention is to provide a stamping-type coffee filter, which aims to solve the technical problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a stamping-type coffee filter, comprising: a filter housing, internally provided with a water storage chamber for storing hot water and a powder storage chamber for storing coffee powder, wherein a flow channel connecting the water storage chamber and the powder storage chamber is provided adjacent to each other; wherein, the upper and lower ends of the filter housing are respectively provided with a first opening and a second opening, the first opening and the second opening respectively connecting the water storage chamber and the powder storage chamber, and a filter element is detachably disposed at the second opening; a mounting component, detachably disposed at the first opening; and an impact assembly, including an impact part, an elastic energy storage part and a trigger switch, wherein the impact part is slidably disposed in the water storage chamber, the fixed end and the movable end of the elastic energy storage part are respectively connected to the mounting component and the impact part, and the trigger switch is disposed on the outer surface of the mounting component for activating the elastic energy storage part; when the elastic energy storage part is activated, its movable end drives the impact part to impact the hot water in the water storage chamber and squeeze the hot water into the flow channel.

[0008] Furthermore, based on the aforementioned scheme, the elastic energy storage unit includes a first rod, a second rod, a first spring, and a locking structure. One end of the first rod is connected to the mounting member, and the other end extends into the interior of the water storage cavity. The first rod has an axially arranged through-type channel. The second rod is slidably disposed within the through-type channel, with one end of the second rod penetrating into the mounting member and the other end penetrating into the water storage cavity and connected to the impact member. The first spring is sleeved on the outside of the first rod for elastically connecting the impact member. The locking structure is disposed within the mounting member for locking with the second rod penetrating into the mounting member. The trigger switch is used to activate the locking structure, causing the locking structure to release the second rod.

[0009] Furthermore, based on the aforementioned solution, the mounting component is provided with an installation space adapted to cooperate with the second rod and the locking structure; wherein, the locking structure includes a locking member and a second spring, the locking member is slidably disposed in the installation space, and the sliding direction of the locking member is perpendicular to the second rod, one side of the locking member extends through to the outer side of the mounting component, the second spring is disposed in the installation space and elastically connected to the locking member, for driving the locking member to abut against the second rod, and the outer ring surface of the second rod is provided with a locking groove adapted to the locking member.

[0010] Furthermore, based on the aforementioned scheme, the trigger switch includes a trigger rod and a third spring. The trigger rod is slidably disposed on the mounting component, with one end of the trigger rod extending through the outer surface of the mounting component and the other end extending through the locking component. The third spring elastically connects the trigger rod and the mounting component. The outer ring surface of the trigger rod is circumferentially provided with an annular groove. The locking component is provided with an adapter hole that adapts to the trigger rod body at the annular groove, allowing the locking component to move when unlocked. When the third spring is compressed, the trigger rod body at the annular groove engages with the adapter hole, unlocking the locking component and enabling it to unlock the second rod body. When the third spring returns to its original position, the trigger rod body outside the annular groove is misaligned with the adapter hole, and the locking component is used to lock the second rod body.

[0011] Furthermore, based on the aforementioned scheme, the impact part is detachably mounted on the second rod.

[0012] Furthermore, based on the aforementioned scheme, a sealing gasket is provided at the adjacent location between the impact part and the inner wall of the powder storage chamber.

[0013] Furthermore, based on the aforementioned solution, the mounting component and the first opening are detachably connected by threads.

[0014] Furthermore, based on the aforementioned scheme, the filter housing includes a first through-type cylindrical body and a second through-type cylindrical body connected in sequence. The first through-type cylindrical body and the second through-type cylindrical body are detachably connected by threads. A partition plate is sandwiched between the first through-type cylindrical body and the second through-type cylindrical body. The partition plate is provided with multiple water-permeable holes to form the aforementioned flow channel. The inner cavity of the first through-type cylindrical body is a water storage cavity. The filter element includes a powder storage bowl detachably disposed in the inner cavity of the second through-type cylindrical body. The mouth of the powder storage bowl is connected to the partition plate and forms the aforementioned powder storage cavity with the partition plate. The bottom of the powder storage bowl is provided with multiple filter holes.

[0015] Furthermore, based on the aforementioned scheme, external threads are provided at the joints of the first through-type cylinder and the second through-type cylinder, and the external threads of the first through-type cylinder and the second through-type cylinder are connected by an annular connector with internal threads.

[0016] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0017] In practical use, the filter of this application first evenly fills the powder storage chamber with coffee powder, and then injects an appropriate amount of hot water into the water storage chamber. After filling, the elastic energy storage unit is pre-energized, and then the mounting component is tightly assembled at the first opening. Subsequently, the elastic energy storage unit is released by triggering a switch. The elastic energy storage unit, relying on its stored elastic potential energy, drives the impact unit to rapidly impact the hot water in the water storage chamber, applying additional pressure to the hot water. Under this pressure, the hot water in the water storage chamber can quickly flow sequentially through the guide channel and the powder storage chamber, and through the filter element, efficiently achieving the coffee extraction process. Compared with traditional filters, this design has significant advantages. It successfully overcomes the shortcomings of relying solely on gravity for water supply, greatly shortens the time required for coffee preparation, effectively avoids prolonged contact between hot water and coffee powder, prevents excessive dissolution of undesirable flavor substances in the coffee, and fully satisfies people's pursuit of high-quality coffee. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an isometric view of a stamped coffee filter according to an embodiment of the present invention;

[0020] Figure 2 This is an isometric cross-sectional view of a stamped coffee filter according to an embodiment of the present invention;

[0021] Figure 3 The isometric view of the locking element, the second rod, and the trigger switch in this embodiment of the utility model. Figure 1 ;

[0022] Figure 4 The isometric view of the locking element, the second rod, and the trigger switch in this embodiment of the utility model. Figure 2 ;

[0023] Figure 5 The isometric view of the locking element, the second rod, and the trigger switch in this embodiment of the utility model. Figure 1 Top view;

[0024] Figure 6 This is an axonometric view of the second rod in an embodiment of the present invention;

[0025] Figure 7 This is an isometric view of the trigger rod according to an embodiment of the present invention;

[0026] Figure 8This is an isometric view of the mounting component according to an embodiment of the present invention.

[0027] Icons: 1-Filter housing, 101-First through-type cylinder, 102-Annular connector, 103-Second through-type cylinder, 2-Mounting component, 3-Elastic energy storage unit, 301-Locking component, 302-First rod, 303-Second rod, 304-First spring, 305-Second spring, 4-Trigger switch, 401-Trigger rod, 402-Third spring, 5-Limiting part, 6-Impact part, 7-Flow guide channel, 8-Filter element, 9-Adaptor hole, 10-Locking groove, 11-Annular groove, 12-Installation space, 13-Divider plate. Detailed Implementation

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0029] Example 1

[0030] Please refer to Figure 1 and Figure 2 This application provides a stamping-type coffee filter, comprising: a filter housing 1, internally provided with a water storage chamber for storing hot water and a powder storage chamber for storing coffee powder, wherein a flow channel 7 is provided at the adjacent positions of the water storage chamber and the powder storage chamber to connect the two; wherein, the upper and lower ends of the filter housing 1 are respectively provided with a first opening and a second opening, the first opening and the second opening respectively connecting the water storage chamber and the powder storage chamber, and a filter element 8 is detachably provided at the second opening; a mounting member 2, detachably provided at the first opening; and an impact assembly, including an impact part 6, an elastic energy storage part 3 and a trigger switch 4, wherein the impact part 6 is slidably provided in the water storage chamber, the fixed end and the movable end of the elastic energy storage part 3 are respectively connected to the mounting member 2 and the impact part 6, the trigger switch 4 is provided on the outer side of the mounting member 2 for activating the elastic energy storage part 3, and when the elastic energy storage part 3 is activated, its movable end drives the impact part 6 to impact the hot water in the water storage chamber and squeeze the hot water into the flow channel 7.

[0031] In practical use, the filter of this application first uniformly fills the powder storage chamber with coffee powder, and then injects an appropriate amount of hot water into the water storage chamber. After filling, the elastic energy storage unit 3 is pre-energized, and then the mounting part 2 is tightly assembled at the first opening. Subsequently, the elastic energy storage unit 3 is released by triggering the switch 4. The elastic energy storage unit 3, relying on its stored elastic potential energy, drives the impact part 6 to quickly impact the hot water in the water storage chamber, applying additional pressure to the hot water. Under this pressure, the hot water in the water storage chamber can quickly flow through the guide channel 7, the powder storage chamber, and through the filter element 8, efficiently realizing the coffee extraction process. Compared with traditional filters, this design has significant advantages. It successfully overcomes the defects of relying solely on gravity for water supply, greatly shortens the time required for coffee making, effectively avoids prolonged contact between hot water and coffee powder, prevents excessive dissolution of undesirable flavor substances in coffee, and fully satisfies people's pursuit of high-quality coffee.

[0032] Example 2

[0033] Please refer to Figures 2-8 This embodiment is essentially the same as Embodiment 1, with the main difference being that the elastic energy storage unit 3 includes a first rod 302, a second rod 303, a first spring 304, and a locking structure. One end of the first rod 302 is connected to the mounting member 2, and the other end extends into the interior of the water storage cavity. The first rod 302 has an axially through-type channel. The second rod 303 is slidably disposed within the through-type channel, with one end of the second rod 303 penetrating into the mounting member 2 and the other end penetrating into the water storage cavity and connected to the impact part 6. The first spring 304 is sleeved on the outside of the first rod 302 for elastic connection to the impact part 6. The locking structure is disposed within the mounting member 2 for locking with the second rod 303 penetrating into the mounting member 2. The trigger switch 4 is used to activate the locking structure, causing the locking structure to release the second rod 303.

[0034] In the above embodiment, when the elastic energy storage unit 3 needs to store energy, the second rod 303 is pushed to slide within the through-type channel of the first rod 302, compressing the first spring 304 sleeved outside the first rod 302. At this time, the locking structure locks the second rod 303, which penetrates into the mounting part 2, keeping the first spring 304 in a compressed state and storing elastic potential energy. When using the filter to make coffee, the trigger switch 4 activates the locking structure, releasing the second rod 303. The first spring 304 rebounds rapidly under its own elastic force, pushing the second rod 303 to drive the impact unit 6 to impact the hot water in the water storage chamber. Its advantage is that, through the cleverly designed locking structure, the elastic energy storage state can be stably maintained, ensuring that energy is released only when needed, thus improving the controllability and accuracy of energy utilization. At the same time, the structure is simple and reliable, and the components work together to provide a stable and powerful power source for the impact unit 6, effectively ensuring that the hot water can be powerfully impacted and quickly flow to the powder storage chamber, greatly improving the coffee extraction efficiency and quality.

[0035] In a preferred embodiment, the mounting member 2 is provided with a mounting space 12 adapted to cooperate with the second rod 303 and the locking structure; wherein, the locking structure includes a locking member 301 and a second spring 305, the locking member 301 is slidably disposed in the mounting space 12, and the sliding direction of the locking member 301 is perpendicular to the second rod 303, one side of the locking member 301 extends to the outer side of the mounting member 2, the second spring 305 is disposed in the mounting space 12 and elastically connected to the locking member 301, for driving the locking member 301 to abut against the second rod 303, and the outer ring surface of the second rod 303 is provided with a locking groove 10 adapted to the locking member 301.

[0036] In the above embodiment, the energy storage process of the elastic energy storage unit 3 is as follows: During operation, the impact unit 6 is pushed by an external force to compress the first spring 304. During this process, the second rod 303 connected to the impact unit 6 moves towards the installation space 12. When the second rod 303 moves to the appropriate position, the locking member 301, under the elastic force of the second spring 305, smoothly slides into the preset locking groove 10 on the outer ring surface of the second rod 303. Thus, the second rod 303 is successfully locked, and the elastic energy storage unit 3 enters the energy storage state. When energy needs to be released, the trigger switch 4 activates, actuating the locking member 301, allowing it to overcome the elastic force of the second spring 305 and move freely, disengaging from the locking groove 10. At this time, the first spring 304 quickly rebounds, driving the impact unit 6 to impact the hot water in the water storage chamber at a very high speed, pressurizing the hot water and causing it to flow rapidly into the powder storage chamber. This design has significant advantages, with an ingenious structure. By relying on the cooperation of simple mechanical components, the locking and unlocking functions are reliably achieved. The unique design of the locking component 301 sliding perpendicular to the second rod 303 greatly enhances the stability of the locking, effectively prevents accidental unlocking, and ensures the safety and reliability of the entire elastic energy storage and release process.

[0037] Optionally, the locking member 301 is provided with a through hole for the second rod 303 to pass through. When the elastic energy storage part 3 is storing energy, the locking member 301 is pressed down so that the through hole and the second rod 303 are connected, which facilitates the compression operation of the second rod 303. When the locking groove 10 and the locking member 301 are connected, the locking member 301 is released. Under the elastic force of the second spring 305, the locking member 301 is locked in the locking groove 10.

[0038] When the locking member 301 and the locking groove 10 are engaged, the second rod 303 moves to its maximum position within the installation space 12. This structural design enables the locking member 301 and the locking groove 10 to be engaged quickly and stably, and is practical.

[0039] In a preferred embodiment, the trigger switch 4 includes a trigger rod 401 and a third spring 402. The trigger rod 401 is slidably disposed on the mounting member 2, with one end of the trigger rod 401 extending through the outer surface of the mounting member 2 and the other end extending through the locking member 301. The third spring 402 elastically connects the trigger rod 401 and the mounting member 2. The outer circumferential surface of the trigger rod 401 is provided with an annular groove 11, and the locking member 301 is provided with a contact point adapted to the annular groove 11. The adapter hole 9 on the rod body of the trigger rod 401 allows the locking member 301 to move when it is unlocked. When the third spring 402 is compressed, the rod body of the trigger rod 401 at the annular groove 11 engages with the adapter hole 9, and the locking member 301 is unlocked so that the locking member 301 can unlock the second rod body 303. When the third spring 402 is reset, the rod body of the trigger rod 401 outside the annular groove 11 is misaligned with the adapter hole 9, and the locking member 301 is used to lock the second rod body 303.

[0040] In the above embodiment, the up-and-down sliding of the trigger rod 401 relative to the locking member 301 enables the locking member 301 to be unlocked or locked. When the third spring 402 is in a naturally released state, the trigger rod 401 at the annular groove 11 rises above the locking member 301, at which point the trigger rod 401 locks the locking member 301, preventing it from moving. Simultaneously, the locking member 301 locks the second rod 303. When the third spring 402 is compressed, the trigger rod 401 at the annular groove 11 descends into the locking member 301. The adapter hole 9 can fit with the trigger rod 401 at the annular groove 11, providing a travel distance for the locking member 301. By pushing the locking member 301 to move, the locking member 301 separates from the locking groove 10, unlocking the second rod 303. The relative position changes of the trigger rod 401 and the locking member 301 in different states achieve reliable locking and unlocking functions, demonstrating ingenious design and ease of operation.

[0041] Example 3

[0042] Please refer to Figure 2 This embodiment is the same as the embodiment 1 in terms of main body, the main difference being that the impact part 6 is detachably provided in the second rod 303.

[0043] In the above embodiments, if the impact part 6 is worn or damaged after long-term use, it is not necessary to replace the entire component. The impact part 6 can be easily disassembled and repaired or replaced separately, which greatly reduces maintenance costs and improves maintenance efficiency.

[0044] Optionally, the impact part 6 and the second rod 303 are detachably connected by threads.

[0045] In a preferred embodiment, a sealing gasket is provided at the adjacent position between the impact part 6 and the inner wall of the powder storage cavity.

[0046] In the above embodiment, the sealing gasket can effectively prevent hot water from leaking from the gap between the impact part 6 and the inner wall of the powder storage chamber during the impact process, ensuring that all hot water passes through the guide channel 7 along the predetermined path and impacts the coffee powder, thereby improving the impact effect.

[0047] In a preferred embodiment, the mounting component 2 is detachably connected to the first opening via a thread.

[0048] In the above embodiments, the threaded connection method enables the quick disassembly or installation of the mounting component 2, and facilitates the energy storage operation of the elastic energy storage section 3.

[0049] Example 4

[0050] Please refer to Figure 1 and Figure 2 This embodiment is essentially the same as Embodiment 1, with the main difference being that the filter housing 1 includes a first through-type cylindrical body 101 and a second through-type cylindrical body 103 connected in sequence. The first through-type cylindrical body 101 and the second through-type cylindrical body 103 are detachably connected by threads. A partition plate 13 is sandwiched between the first through-type cylindrical body 101 and the second through-type cylindrical body 103. The partition plate 13 is provided with multiple water-permeable holes to form the flow channel 7. The inner cavity of the first through-type cylindrical body 101 is a water storage cavity. The filter element 8 includes a powder storage bowl detachably disposed in the inner cavity of the second through-type cylindrical body. The mouth of the powder storage bowl is connected to the partition plate 13 and forms the powder storage cavity with the partition plate 13. The bottom of the powder storage bowl is provided with multiple filter holes.

[0051] In the above embodiments, the threaded connection makes it easy to disassemble and assemble the first through-type cylinder 101 and the second through-type cylinder 103, which is conducive to internal cleaning, component replacement and maintenance; the structural design of the partition plate 13 and the powder storage bowl clearly divides the water storage chamber and the powder storage chamber, ensuring that hot water enters the powder storage chamber in an orderly manner through the guide channel 7 to extract coffee powder; the powder storage bowl is detachable for easy cleaning, and the design of multiple water permeable holes and filter holes increases the contact area between hot water and coffee powder and the filtration efficiency of coffee liquid, ensuring coffee quality.

[0052] In a preferred embodiment, the joint of the first through-type cylindrical body 101 and the second through-type cylindrical body 103 is provided with external threads, and the external threads of the first through-type cylindrical body 101 and the second through-type cylindrical body 103 are connected by an annular connector 102 with internal threads.

[0053] In the above embodiment, the internal thread of the annular connector 102 is tightly engaged with the external threads of the two cylinders (the first through-type cylinder 101 and the second through-type cylinder 103). Compared with the direct cylinder-to-cylinder threaded connection, it can provide a larger contact area and stronger fastening force, effectively preventing the cylinders from loosening due to vibration, water flow impact, etc. during coffee making, and ensuring the stability of the entire filter structure.

[0054] Specifically, the outer ring surface of the second through-type cylinder 103 is provided with a plurality of limiting parts 5. When the mouth of the coffee cup is aligned with the bottom of the second through-type cylinder 103, the limiting parts 5 abut against the top of the mouth of the coffee cup, so as to position the filter of this application on the coffee cup.

[0055] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0056] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A filter for pressed coffee, characterized in that, include: The filter housing (1) has a water storage chamber for storing hot water and a powder storage chamber for storing coffee powder inside. A flow channel (7) connecting the water storage chamber and the powder storage chamber is provided at the adjacent positions of the water storage chamber and the powder storage chamber. The filter housing (1) is provided with a first opening and a second opening at its upper and lower ends, respectively. The first opening and the second opening are respectively connected to the water storage chamber and the powder storage chamber, and a filter element (8) is detachably provided at the second opening. Mounting element (2), detachably disposed in the first opening; and The impact assembly includes an impact part (6), an elastic energy storage part (3), and a trigger switch (4). The impact part (6) is slidably disposed in the water storage cavity. The fixed end and the movable end of the elastic energy storage part (3) are respectively connected to the mounting part (2) and the impact part (6). The trigger switch (4) is disposed on the outer side of the mounting part (2) and is used to activate the elastic energy storage part (3). When the elastic energy storage part (3) is activated, its movable end drives the impact part (6) to impact the hot water in the water storage cavity and squeeze the hot water into the guide channel (7).

2. A filter for espresso coffee according to claim 1, characterized in that, The elastic energy storage unit (3) includes a first rod (302), a second rod (303), a first spring (304), and a locking structure. One end of the first rod (302) is connected to the mounting member (2), and the other end extends into the interior of the water storage cavity. The first rod (302) is axially provided with a through-type channel. The second rod (303) is slidably disposed in the through-type channel. One end of the second rod (303) passes through the mounting member (2), and the other end passes through the water storage cavity and is connected to the impact part (6). The first spring (304) is sleeved on the outside of the first rod (302) for elastic connection to the impact part (6). The locking structure is disposed within the mounting member (2) and is used to lock and cooperate with the second rod (303) that penetrates into the mounting member (2). The trigger switch (4) is used to activate the locking structure, causing the locking structure to release the second rod (303).

3. A filter for espresso coffee according to claim 2, characterized in that, The mounting component (2) is provided with a mounting space (12) that is adapted to cooperate with the second rod (303) and the locking structure; The locking structure includes a locking member (301) and a second spring (305). The locking member (301) is slidably disposed in the mounting space (12), and the sliding direction of the locking member (301) is perpendicular to the second rod (303). One side of the locking member (301) extends through to the outer side of the mounting member (2). The second spring (305) is disposed in the mounting space (12) and elastically connected to the locking member (301) to drive the locking member (301) to abut against the second rod (303). The outer ring surface of the second rod (303) is provided with a locking groove (10) adapted to the locking member (301).

4. A filter for espresso coffee according to claim 3, characterized in that, The trigger switch (4) includes a trigger rod (401) and a third spring (402). The trigger rod (401) is slidably disposed on the mounting member (2), and one end of the trigger rod (401) extends through to the outer side of the mounting member (2), and the other end extends through the locking member (301). The third spring (402) elastically connects the trigger rod (401) and the mounting member (2). The trigger rod (401) has an annular groove (11) circumferentially arranged on its outer ring surface. The locking member (301) has an adapter hole (9) adapted to the trigger rod (401) body at the annular groove (11) for movement when the locking member (301) is unlocked. When the third spring (402) is compressed, the trigger rod (401) body at the annular groove (11) aligns with the adapter hole (9), and the locking member (301) is unlocked so that the locking member (301) can unlock the second rod body (303). When the third spring (402) is reset, the trigger rod (401) body outside the annular groove (11) is misaligned with the adapter hole (9), and the locking member (301) is used to lock the second rod body (303).

5. A filter for espresso coffee according to claim 4, characterized in that, The impact part (6) is detachably mounted on the second rod body (303).

6. A filter for espresso coffee according to claim 1, characterized in that, A sealing gasket is provided at the adjacent position between the impact part (6) and the inner wall of the powder storage cavity.

7. A filter for espresso coffee according to claim 6, characterized in that, The mounting component (2) is detachably connected to the first opening via a thread.

8. A filter for espresso coffee according to claim 1, characterized in that, The filter housing (1) includes a first through-type cylindrical body (101) and a second through-type cylindrical body (103) connected in sequence. The first through-type cylindrical body (101) and the second through-type cylindrical body (103) are detachably connected by threads. A partition plate (13) is sandwiched between the first through-type cylindrical body (101) and the second through-type cylindrical body (103). The partition plate (13) is provided with a plurality of water-permeable holes to form the flow channel (7). The inner cavity of the first through-type cylindrical body (101) is a water storage cavity. The filter element (8) includes a powder storage bowl that is detachably disposed in the second through-type inner cavity. The mouth of the powder storage bowl is connected to the partition plate (13) and forms the powder storage cavity with the partition plate (13). The bottom of the powder storage bowl is provided with multiple filter holes.

9. A filter for espresso coffee according to claim 8, characterized in that, The first through-type cylindrical body (101) and the second through-type cylindrical body (103) are both provided with external threads at their joints. The external threads of the first through-type cylindrical body (101) and the second through-type cylindrical body (103) are connected by an annular connector (102) with internal threads.

Images