Coffee powder pressing device

Abstract

The utility model discloses a coffee powder pressing device which comprises a pressing rod and a powder pressing seat. A pressure relief piece and a first elastic piece are arranged in the pressing rod, and the pressure relief piece is provided with a first limiting part; a limiting piece is arranged at the bottom of the pressing rod, the pressing rod can move relative to the limiting piece, the limiting piece is provided with a second limiting part and a pressed part, and the second limiting part is used for being in limiting fit with the first limiting part so as to limit movement of the pressure relief piece when the pressing rod moves relative to the limiting piece; a jacking part is arranged on the pressing rod, the jacking part is used for jacking the pressed part in the process that the pressing rod moves relative to the limiting piece, and the pressed part is used for providing an acting force when being jacked so as to drive the second limiting part to be separated from the first limiting part; and the first elastic piece is used for providing constant elastic force to drive the pressure relief piece to press downwards and impact the positioning part on the powder pressing seat after the second limiting part is separated from the first limiting part. The coffee powder pressing device disclosed by the utility model can instantly impact the pressed powder with constant pressure, so that the force for pressing the powder each time is the same, and the uniform powder pressing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee equipment, in particular to a coffee powder pressing device. Background Art

[0002] A coffee powder pressing device is one of the essential devices in the coffee making process. Its main function is to flatten and compact the coffee powder to form a flat horizontal surface, so as to ensure that the coffee powder can withstand the huge pressure generated during the extraction process by the coffee machine in the subsequent extraction process, and will not be washed away and affect the extraction quality.

[0003] Traditional coffee powder pressing devices usually adopt a manual powder pressing method, relying on the experience and strength of the operator to determine the pressing force and uniformity. However, manual powder pressing has high requirements for the skills and experience of the operator, and there may be significant differences in the pressing force of different operators. When the pressing force is too light, the flow rate of hot water through the coffee powder is too fast, and it is easy to brew coffee with a sour or light taste; if the pressing force is too heavy and the hot water flow rate is too slow, it is easy to brew coffee with a bitter or burnt taste.

[0004] Therefore, there is an urgent need for a coffee powder pressing device to overcome the above-mentioned defects. Summary of the Utility Model

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a coffee powder pressing device, which can realize instant impact powder pressing with a constant force, and the pressure during powder pressing is an impact-type constant pressure operation independent of the operation, ensuring uniform powder pressing.

[0006] The technical solution adopted by the utility model to solve its problems is:

[0007] A coffee powder pressing device includes:

[0008] A downward pressing assembly, including a pressing rod, in which a pressure relief member and a first elastic member are provided. The pressure relief member is provided with a first limiting portion; a limiting member is provided at the bottom of the pressing rod, and the pressing rod can move relative to the limiting member. The limiting member is provided with a second limiting portion and a pressure receiving portion. The second limiting portion is used for limiting cooperation with the first limiting portion to limit the movement of the pressure relief member when the pressing rod moves relative to the limiting member; a top pressing portion is provided on the pressing rod, and the top pressing portion is used for top pressing the pressure receiving portion during the movement of the pressing rod relative to the limiting member. The pressure receiving portion is used for providing a force when being top pressed to drive the second limiting portion to disengage from the first limiting portion;

[0009] The powder pressing assembly includes a powder pressing seat which is arranged at the bottom of the downward pressing assembly, and a positioning part is provided on the powder pressing seat; the pressing rod is used to press downward under the action of an external force and drive the powder pressing seat to press downward; the first elastic member is used to provide a constant elastic force to drive the pressure relief member to press downward and strike the positioning part after the second limiting part is separated from the first limiting part.

[0010] Further, the pressure relief member includes a pressure relief column, and a first stepped structure is provided on the outer periphery of the pressure relief column; the first limiting part includes the first stepped structure;

[0011] The limiting member includes two elastic arms arranged oppositely, the second limiting part is located at the upper end of the elastic arms, and the upper end of the elastic arms abuts against the first stepped structure.

[0012] Further, a pressing disc is provided at the bottom of the pressing rod, and two connecting grooves are provided on the pressing disc. The two connecting grooves are spaced apart so that a top pressing part is formed between the two connecting grooves; the two elastic arms are spaced apart and respectively pass through the two connecting grooves; the lower ends of the two elastic arms have pressed sections, and the two pressed sections are bent towards each other to form the pressed part.

[0013] Further, a guiding column is provided on the pressing disc, and the pressure relief column has a guiding channel which axially penetrates through the end of the pressure relief column; the guiding column is slidably connected to the guiding channel.

[0014] Further, the guiding column has a guiding section, a connecting section and a top pressing section which are connected in sequence. The guiding section is slidably connected in the guiding channel, the connecting section is screwed to the pressing disc, and the top pressing section protrudes from the bottom end of the pressing disc; the pressure relief member is used to top press the top pressing section when pressing downward, and the top pressing section is used to strike the positioning part when being top pressed.

[0015] Further, an installation groove is provided on the powder pressing seat, and the lower ends of the two elastic arms are connected by a connecting arm, and the connecting arm is inserted into the installation groove.

[0016] Further, a second stepped structure is further provided at the upper end of the pressure relief column, one end of the first elastic member abuts against the top wall of the pressing rod, and the other end of the first elastic member abuts against the second stepped structure.

[0017] Further, the powder pressing assembly includes a pressing cover and a sliding sleeve. The pressing cover is sleeved outside the sliding sleeve. The upper end of the pressing cover is provided with a first flange, and the upper end of the sliding sleeve abuts against the lower end of the first flange. The powder pressing seat is connected to the bottom of the sliding sleeve. A second elastic member is provided between the pressing cover and the sliding sleeve, and the second elastic member is used to provide an elastic force to drive the sliding sleeve to move closer to the first flange. The powder pressing seat is used to drive the sliding sleeve to slide downward relative to the pressing cover when the pressing rod is pressed downward.

[0018] Further, a sliding channel is provided inside the sliding sleeve, and the pressing rod is slidably connected to the sliding channel. A second flange is provided inside the sliding channel. The edge of the pressing disc extends outward to form a protruding platform, and the upper end of the protruding platform abuts against the lower end of the second flange.

[0019] Further, a third elastic member is provided inside the sliding channel. Two ends of the third elastic member respectively abut against the powder pressing seat and the bottom of the pressing disc, and the third elastic member is used to provide an elastic force to drive the pressing disc away from the powder pressing seat.

[0020] In summary, a coffee powder pressing device provided by the present utility model has the following technical effects:

[0021] 1) The pressing rod triggers the constant force release by relative movement with the limiting member. When the top pressing portion reaches the bottom end of the pressed portion, it reaches the critical state of constant force triggering. At this time, the pressure transmitted by the pressing rod to the powder pressing seat is instantaneously disconnected. Instead, the first elastic member pushes the pressure relief member to impact the powder pressing seat, so that the powder pressing seat impacts the powder pressing with a constant force instantaneously.

[0022] 2) The pressing force and stroke of the first elastic member pushing the pressure relief member downward are related to the compression stroke of the first elastic member, and the relative movement distance between the pressing rod and the limiting member before triggering the constant force release is certain. Therefore, the compression stroke of the first elastic member is certain, realizing that the pressure during powder pressing is a constant pressure during impact independent of the operation. Description of the Drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the coffee powder pressing device according to an embodiment of the present utility model;

[0024] Figure 2 is a cross-sectional structural schematic diagram of the coffee powder pressing device according to an embodiment of the present utility model in an initial state;

[0025] Figure 3 is a cross-sectional structural schematic diagram of the coffee powder pressing device according to an embodiment of the present utility model in a use state;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the pressing-down assembly according to an embodiment of the present utility model;

[0027] Figure 5 Schematic cross-sectional structure diagram of the downward pressing assembly according to an embodiment of the present utility model;

[0028] Figure 6 Schematic structure diagram of the pressure relief member and the limiting member according to an embodiment of the present utility model in an initial state;

[0029] Figure 7 Schematic cross-sectional structure diagram of the powder pressing assembly according to an embodiment of the present utility model;

[0030] Figure 8 is Figure 2 Local enlarged view of part A in

[0031] Figure 9 Schematic three-dimensional structure diagram of the pressing rod and the limiting member according to an embodiment of the present utility model in a use state.

[0032] Among them, the meanings of the reference numerals are as follows:

[0033] 1. Downward pressing assembly; 11. Pressing rod; 111. Top pressing part; 12. Handle; 13. Pressing disc; 131. Connecting groove; 14. Pressure relief member; 141. First step structure; 142. Guiding channel; 143. Second step structure; 144. Third step structure; 15. First elastic member; 16. Limiting member; 161. Second limiting part; 162. Compressed part; 163. Elastic arm; 164. Compressed section; 165. Connecting arm; 17. First thread structure; 18. Guiding column; 181. Guiding section; 182. Connecting section; 183. Top pressing section; 19. Second thread structure; 2. Powder pressing assembly; 21. Powder pressing seat; 211. Positioning part; 212. Installation groove; 22. Pressing cover; 221. First flange; 222. Pressing part; 23. Sliding sleeve; 231. Sliding channel; 232. Second flange; 24. Second elastic member; 25. Third elastic member; 26. Third thread structure. Detailed implementation manners

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model.

[0037] Referring to Figure 1 , this utility model discloses a coffee powder pressing device, which includes a downward pressing assembly 1 and a powder pressing assembly 2. Specifically, the downward pressing assembly 1 includes a pressing rod 11. Referring to Figure 2 and Figure 3 , a pressure relief member 14 and a first elastic member 15 are provided inside the pressing rod 11. Among them, the pressure relief member 14 is provided with a first limiting portion. A limiting member 16 is provided at the bottom of the pressing rod 11, and the pressing rod 11 can move relative to the limiting member 16. Among them, the limiting member 16 is provided with a second limiting portion 161 and a pressed portion 162. Referring to Figure 2 and Figure 6 , the second limiting portion 161 is used for limiting cooperation with the first limiting portion to limit the movement of the pressure relief member 14 when the pressing rod 11 moves relative to the limiting member 16. Referring to Figure 4 , a top pressing portion 111 is provided on the pressing rod 11. The top pressing portion 111 is used for top pressing the pressed portion 162 during the movement of the pressing rod 11 relative to the limiting member 16. Referring to Figure 3 , the pressed portion 162 is used for providing a force when being top pressed to drive the second limiting portion 161 to disengage from the first limiting portion.

[0038] Referring to Figure 7 , the powder pressing assembly 2 includes a powder pressing seat 21. The powder pressing seat 21 is arranged at the bottom of the downward pressing assembly 1. Among them, a positioning portion 211 is provided on the powder pressing seat 21. Specifically, the pressing rod 11 is used for being pressed downward under an external force and driving the powder pressing seat 21 to be pressed downward; and the first elastic member 15 is used for providing a constant elastic force to drive the pressure relief member 14 to be pressed downward and impact the positioning portion 211 after the second limiting portion 161 disengages from the first limiting portion.

[0039] On the basis of this structure, a handle 12 is also screwed to the upper end of the pressing rod 11 through a first thread structure 17. When using the coffee powder pressing device of this application, Figure 2The figure shows the initial state diagram of the coffee powder pressing device of the present application when it is just placed on the powder bowl. In the assembled state, the bottom end of the limiting member 16 abuts against the powder pressing seat 21, and at the same time, the limiting member 16 abuts against the bottom of the pressure relief member 14 through the second limiting portion 161. A force can be applied to the handle 12 in the initial state of the device, so that the handle 12 drives the pressing rod 11 to press down, and at the same time, the pressing rod 11 drives the powder pressing seat 21 to press down and abut against the coffee powder. When the powder pressing seat 21 abuts against the coffee powder and the pressing rod 11 continues to move downward, the pressing rod 11 will move downward relative to the limiting member 16. At this time, the pressure relief member 14 is limited by the limiting member 16; wherein, the first elastic member 15 is arranged between the pressure relief member 14 and the pressing rod 11. When the pressing rod 11 presses downward relative to the limiting member 16, the pressure relief member 14 will compress the first elastic member 15 so that the first elastic member 15 stores energy.

[0040] Refer to Figure 3 , when the pressing rod 11 moves downward relative to the limiting member 16 until the top pressing portion 111 presses the pressed portion 162, the pressing rod 11 presses the pressed portion 162 through the top pressing portion 111, so that the pressed portion 162 provides a force to drive the second limiting portion 161 to disengage from the first limiting portion, and the limiting effect of the limiting member 16 on the pressure relief member 14 is released. Subsequently, the pressure relief member 14 instantaneously moves downward under the action of the first elastic member 15 and impacts the positioning portion 211 on the powder pressing seat 21. The positioning portion 211 transmits the impact force to the powder pressing seat 21, so that the powder pressing seat 21 instantaneously impacts the coffee powder with a constant force.

[0041] Wherein, the moment when the second limiting portion 161 disengages from the first limiting portion is defined as the critical state of constant force triggering. Before the critical state of constant force triggering, the first limiting portion and the second limiting portion 161 are in limiting cooperation in the vertical direction, and the first elastic member 15 is in a compressed and energy-storing state; at the critical state of constant force triggering, the pressure transmitted by the handle 12 to the powder pressing seat 21 is instantaneously disconnected, and instead, the energy stored in the first elastic member 15 is instantaneously released. The pressure relief member 14 impacts the powder pressing seat 21 under the action of the first elastic member 15, so that the coffee powder is instantaneously compacted by the powder pressing seat 21.

[0042] Specifically, the triggering condition for the release of the constant force is that the pressing rod 11 moves relative to the limiting member 16 until the top pressing portion 111 presses the pressed portion 162 outward, and the pressed portion 162 drives the second limiting portion 161 to have a horizontal displacement, thereby releasing the vertical limiting between the first limiting portion and the second limiting portion 161. At this time, the limiting member 16 no longer abuts against the pressure relief member 14, and the pressure relief member 14 is pushed by the instantaneous elastic force of the first elastic member 15 towards the powder pressing seat and the elastic force of the first elastic member 15 is released. And when the bottom of the pressure relief member 14 impacts the positioning portion 211 on the powder pressing seat, an impact warning sound will be emitted to remind the operator to stop pressing the coffee powder.

[0043] It should be noted that the force and stroke of the first elastic member 15 pushing the pressure relief member 14 downward are only related to the compression stroke of the first elastic member 15. Before the constant force is triggered, the relative movement distance between the pressure lever 11 and the limiting member 16 is fixed. Therefore, the compression stroke of the first elastic member 15 is fixed, so that the elastic force and stroke of pushing the pressure relief member 14 downward are also fixed. Thus, the pressure during coffee powder pressing of the coffee powder pressing device is an impact-type constant pressure independent of the operation. That is, the realization of the powder pressing pressure depends on the fixed stroke of the relative movement between the pressure lever 11 and the limiting member 16 and the fixed compression force of the first elastic member 15. The force when the operator presses the pressure lever 11 only affects the speed of reaching the critical state of constant force triggering, but does not affect the final powder pressing pressure.

[0044] Therefore, the operator does not need to precisely control the magnitude of the applied force, and only needs to reach the constant force trigger position to complete the constant force and uniform powder pressing. In addition, when the pressure relief member 14 hits the positioning portion 211, a sound is emitted to prompt the operator to stop powder pressing, avoiding over-powdering or under-powdering, and improving the convenience and accuracy of use.

[0045] In addition, the first elastic member 15 can be a spring. Specifically, different specifications of springs can be selected according to different powder pressing amounts or the degree to which the coffee powder needs to be compacted, or the pre-tightening pressure of the spring when the coffee powder pressing device is in the initial state can be adjusted, so that the magnitude of the force at each impact can be set.

[0046] Furthermore, referring to Figure 6 , the pressure relief member 14 includes a pressure relief column, and a first step structure 141 is provided on the outer periphery of the pressure relief column. The first limiting portion includes the first step structure 141. In addition, the limiting member 16 includes two relatively arranged elastic arms 163, and the second limiting portion 161 is located at the upper end of the elastic arms 163, and the upper end of the elastic arms 163 abuts against the first step structure 141.

[0047] Specifically, a convex platform can be provided in the middle of the bottom surface of the pressure relief column. There is a spacing between the outer periphery of the convex platform and the outer periphery of the pressure relief column, so that a first step structure 141 is formed between the outer periphery of the convex platform and the bottom surface periphery of the pressure relief column. In addition, the elastic arms 163 can be column-shaped arms, and the second limiting portion 161 is specifically the upper end surface of the elastic arms 163.

[0048] Based on this structure, during use, the pressure lever 11 is pressed downward to compress the pressure relief member 14 against the first elastic member 15. The first elastic member 15 presses the first step structure 141 against the upper end surface of the elastic arms 163, and the first step structure 141 and the elastic arms 163 are limited up and down. Referring to Figure 3, when the pressing part 111 of the compression bar 11 presses outward against the pressed part 162 at the lower end of the elastic arm 163, the pressed part 162 drives the two elastic arms 163 to move away from each other. When the elastic arm 163 moves until its upper end face disengages from the first step structure 141, the limiting effect of the elastic arm 163 on the pressure relief part 14 is released.

[0049] Refer to Figure 3 and Figure 6 , a third step structure 144 is further provided on the outer periphery of the pressure relief column. The third step structure 144 is located above the first step structure 141 and is spaced from the first step structure 141, and the outer diameter of the third step structure 144 is greater than the outer diameter of the first step structure 141. Specifically, a boss extends outward from a part of the outer periphery of the pressure relief column, and a third step structure 144 is formed between the bottom peripheral edge of the boss and the outer periphery of the pressure relief column.

[0050] Wherein, an accommodation interval is formed between the two elastic arms 163. After the first limiting part is disengaged from the second limiting part 161, the pressure relief column moves relative to the limiting part 16 under the instantaneous elastic force of the first elastic part 15 and enters the accommodation interval. When the third step structure 144 abuts against the upper end face of the elastic arm 163, the elastic arm 163 limits the pressure relief column again. It should be noted that through the setting of the third step structure 144, the movement stroke of the pressure relief column can be limited, ensuring that the movement stroke range of the pressure relief column is the distance from the first step structure 141 to the third step structure 144.

[0051] In addition, the outer diameter of the boss forming the third step structure 144 is adapted to the inner diameter of the compression bar 11. When the pressure relief column slides up and down in the compression bar 11, the boss forming the third step structure 144 can guide the pressure relief column to move along the axial direction of the compression bar 11, reduce movement deviation, and ensure the consistency of the movement stroke of the pressure relief column.

[0052] Furthermore, refer to Figure 4 and Figure 5 , a pressure plate 13 is provided at the bottom of the compression bar 11. Two connecting grooves 131 are provided on the pressure plate 13, and the two connecting grooves 131 are spaced apart so that a pressing part 111 is formed between the two connecting grooves 131. Among them, the two elastic arms 163 are spaced apart and respectively pass through the two connecting grooves 131; in addition, the lower ends of the two elastic arms 163 have a pressed section 164, and the two pressed sections 164 are bent close to each other to form a pressed part 162.

[0053] On the basis of this structure, when pressing the powder, the pressing rod 11 drives the pressing plate 13 to press downwards. The connecting groove 131 presses downwards relative to the elastic arms 163. Before the pressing plate 13 reaches the pressed section 164, the width of the pressing portion 111 is adapted to the accommodation interval between the two elastic arms 163, and the elastic arms 163 are not subjected to the pressing action of the pressing portion 111. As the pressing plate 13 continues to press downwards, the pressing portion 111 is pressed into the space between the two pressed sections 164. Since the two pressed sections 164 approach and bend towards each other, the width of the accommodation interval formed between the two pressed sections 164 gradually becomes smaller. Therefore, while the pressing portion 111 presses downwards, it presses the two pressed sections 164 outwards, causing the two pressed sections 164 to drive the two elastic arms 163 to move away from each other.

[0054] It should be noted that the two pressed sections 164 approach and bend towards each other, so that the upper parts of the two pressed sections 164 form a pressed portion 162, and the lower parts of the two pressed sections 164 form a supporting portion. Along the pressing direction of the pressing portion 111, the width of the accommodation interval of the pressed portion 162 gradually becomes smaller, and the width of the accommodation interval of the supporting portion gradually becomes larger.

[0055] In this way, by bending the two pressed sections 164 towards each other to form the pressed portion 162, the pressing portion 111 can press the pressed portion 162 outwards while moving downwards. Refer to Figure 9 , when the pressing plate 13 moves to the bottom end where the pressing portion 111 presses the pressed portion 162, the constant force release is triggered. At this time, the limiting effect of the limiting member 16 on the pressure relief member 14 is released, so that the pressure relief member 14 can be pressed downwards under the instantaneous action of the first elastic member 15. This process has nothing to do with the magnitude of the pressing action of the pressing rod 11. As long as the pressing plate 13 reaches the position of the pressed portion 162 and the pressing portion 111 presses the pressed portion 162 so that the first limiting portion is detached from the second limiting portion 161, the elastic force accumulated by the first elastic member 15 can be transmitted to the positioning portion 211 on the powder pressing seat 21 through the impact action between the pressure relief member 14 and the pressing plate 13.

[0056] In addition, the supporting portion can drive the two pressed sections 164 and the two elastic arms 163 to reset through its own elastic action when the pressed portion 162 is not subjected to the pressing action. Specifically, the supporting portion in this application can be made of materials such as plastic and silicone, so that when the pressed portion 162 is subjected to a force, the supporting portion can deform to drive the two pressed sections 164 and the elastic arms 163 to move away from each other, and when the pressed portion 162 is not subjected to a force, it can drive the two pressed sections 164 and the two elastic arms 163 to reset. Additionally, it can also be that the limiting member 16 as a whole is made of materials such as plastic and silicone, and the pressed section 164 and the elastic arm 163 are integrally formed.

[0057] Furthermore, the pressure plate 13 is provided with a guide column 18 , and correspondingly, the pressure relief column has a guide channel 142 , and the guide channel 142 penetrates the end of the pressure relief column along the axial direction of the pressure relief column. The guide column 18 is slidably connected to the guide channel 142 .

[0058] More specifically, the guide column 18 has a guide section 181, a connection section 182 and a pressing section 183 which are connected in sequence, wherein the guide section 181 is slidably connected in the guide channel 142, the connection section 182 is screwed to the pressure plate 13, and the pressing section 183 is convexly arranged at the bottom end of the pressure plate 13. It should be noted that the pressure relief member 14 is used to press the pressing section 183 downward when pressing down, and the pressing section 183 is used to hit the positioning portion 211 when being pressed.

[0059] On the basis of this structure, the connecting section 182 and the pressure plate 13 are screwed together through the second threaded structure 19. Specifically, the outer periphery of the connecting section 182 is provided with an external thread, the pressure plate 13 is provided with a through hole, and the inner side of the through hole is provided with an internal thread. The upper end of the guide column 18 extends into the pressure rod 11 through the through hole and is connected to the guide channel 142 of the pressure relief column.

[0060] When the powder is compressed, the pressing plate 13 presses down to drive the guide column 18 to slide downward relative to the guide channel 142, while the pressure relief column is limited by the limiter 16 and does not move. As the pressing plate 13 presses the pressure receiving portion 162 at the bottom of the elastic arm 163 through the pressing portion 111, the elastic arm 163 moves horizontally to release the limiter 16, and at this time, the pressing section 183 of the guide column 18 at the bottom of the pressing plate 13 abuts against the positioning portion 211 on the powder pressing seat 21; at the same time, the pressure relief member 14 moves downward under the action of the first elastic member 15 to impact the pressing plate 13, and transmits the elastic force to the pressing section 183 through the pressing plate 13, so that the pressing section 183 and the positioning portion 211 collide.

[0061] The setting of the guide column 18 and the guide channel 142 can guide the pressure relief column to move downward correctly, ensure the consistent movement stroke of the pressure relief column, and thus ensure the consistent force of the pressure relief column when it hits the positioning part 211 through the top pressing section 183 each time. Since the positioning part 211 will drive the powder pressing seat 21 to compact the coffee powder when it is impacted, and the force on the positioning part 211 is the same each time, the uniformity of the coffee powder compaction can be ensured.

[0062] Further, see Figure 7 The powder pressing seat 21 is provided with a mounting groove 212, and the lower ends of the two elastic arms 163 are connected by a connecting arm 165, see Figure 2 and Figure 3 , the connecting arm 165 is inserted into the mounting groove 212 .

[0063] On the basis of this structure, specifically, the pressure-receiving section 164 at the lower end of the elastic arm 163 is connected to the connecting arm 165, and the connecting arm 165 and the pressure-receiving section 164 are connected by an arc section. Since the limiting member 16 is inserted into the installation groove 212 through the connecting arm 165, when pressing the powder, the pressing rod 11 can drive the powder pressing seat 21 to press down through the limiting member 16.

[0064] Among them, the connecting arm 165 and the pressure-receiving section 164 are connected by an arc section. When the pressing disc 13 presses down the pressure-receiving part 162, the arc section can be deformed and bent, so as to slow down or absorb part of the pressure. This elastic design helps to provide more uniform force transmission during the powder pressing process, avoiding sudden force changes or unevenness caused by rigid connections.

[0065] Furthermore, a second step structure 143 is also provided at the upper end of the pressure relief column, and one end of the first elastic member 15 abuts against the top wall of the pressing rod 11, and the other end of the first elastic member 15 abuts against the second step structure 143.

[0066] Specifically, a convex platform extends outward from the local outer periphery of the pressure relief column. A third step structure 144 is formed between the bottom peripheral edge of the convex platform and the outer periphery of the pressure relief column. At the same time, a second step structure 143 is formed between the top peripheral edge of the convex platform and the outer periphery of the pressure relief column.

[0067] The first elastic member 15 abuts against the second step structure 143. The second step structure 143 can limit the first elastic member 15 to ensure that the first elastic member 15 does not twist when being compressed, ensuring that the movement stroke of the first elastic member 15 when being compressed is consistent. When the top pressing part 111 presses the pressure-receiving part 162 and the first limiting part is separated from the second limiting part 161, the release of the first elastic member 15 will push the second step structure 143 at the top of the pressure relief column, causing the pressure relief column to move downward without deviation, ensuring that the force and stroke released by the first elastic member 15 are controllable.

[0068] Furthermore, referring to Figure 7 and Figure 8 , the powder pressing assembly 2 includes a pressing cover 22 and a sliding sleeve 23. The pressing cover 22 is sleeved outside the sliding sleeve 23, and the powder pressing seat 21 is connected to the bottom of the sliding sleeve 23. Among them, a first flange 221 is provided at the upper end of the pressing cover 22, and the upper end of the sliding sleeve 23 abuts against the lower end of the first flange 221. A second elastic member 24 is provided between the pressing cover 22 and the sliding sleeve 23. Specifically, the second elastic member 24 is used to provide an elastic force to drive the sliding sleeve 23 to move close to the first flange 221; and the powder pressing seat 21 is used to drive the sliding sleeve 23 to slide downward relative to the pressing cover 22 when the pressing rod 11 presses down.

[0069] On the basis of this structure, the sliding sleeve 23 and the powder pressing seat 21 are screwed together through the third thread structure 26. Specifically, an internal thread is provided on the inner side of the lower end of the sliding sleeve 23, a boss is provided on the powder pressing seat 21, and an external thread is provided on the outer periphery of the boss. The powder pressing seat 21 and the sliding sleeve 23 are screwed together through the internal and external threads.

[0070] When pressing the powder, the pressing cover 22 presses against the edge of the powder bowl through the pressing portion 222 on the outer periphery of the bottom end. The pressing rod 11 presses down and presses the powder pressing seat 21 through the limiting member 16. The powder pressing seat 21 drives the sliding sleeve 23 to press down the second elastic member 24, so that the pressing rod 11, the sliding sleeve 23 and the powder pressing seat 21 all press down relative to the pressing cover 22. After the powder pressing seat 21 abuts against the coffee powder, the pressing rod 11 will move downward relative to the limiting member 16.

[0071] Among them, the pressing cover 22 abuts against the edge of the powder bowl through the pressing portion 222 on the outer periphery of the bottom end, which can prevent the coffee powder in the powder bowl from overflowing during the powder pressing process. After the powder pressing seat 21 finishes pressing the powder, the second elastic member 24 will drive the sliding sleeve 23 to move close to the first flange 221, so that the sliding sleeve 23 and the powder pressing seat 21 can quickly and reliably return to the initial position to prepare for the next powder pressing operation. Among them, the second elastic member 24 can be a spring.

[0072] In addition, the second elastic member 24 is not only used for the reset function, but also can provide additional stability and buffering effect when the pressing rod 11 presses down. This structural design ensures the uniform distribution of pressure during the powder pressing process and reduces the risk of damage to the device due to suddenly applied forces.

[0073] Further, a sliding channel 231 is provided in the sliding sleeve 23, and the pressing rod 11 is slidably connected to the sliding channel 231; refer to Figure 8 , a second flange 232 is provided in the sliding channel 231, the edge of the pressing disc 13 extends outward to form a protruding platform, and the upper end of the protruding platform abuts against the lower end of the second flange 232.

[0074] Among them, a third elastic member 25 is provided in the sliding channel 231, and both ends of the third elastic member 25 respectively abut against the bottom of the powder pressing seat 21 and the pressing disc 13. Among them, the third elastic member 25 is used to provide an elastic force to drive the pressing disc 13 away from the powder pressing seat 21.

[0075] On the basis of this structure, when the device is in the initial state, the protruding platform of the pressing disc 13 abuts against the lower end of the second flange 232 under the action of the third elastic member 25, so that the pressing disc 13 is limited in the sliding channel 231; when the pressing rod 11 is stressed and drives the pressing disc 13 to press down, the pressing disc 13 slides relative to the sliding channel 231 and compresses the third elastic member 25 at the bottom. After the powder pressing seat 21 finishes pressing the powder, when the pressing rod 11 is not pressed by an external force, the third elastic member 25 pushes the pressing disc 13 and the pressing rod 11 to reset.

[0076] Thus, by providing the protruding platform and the second flange 232, the pressure plate 13 is limited within the sliding channel 231. Then, by providing the third elastic member 25, the pressure lever 11 can drive the pressure plate 13 to reset when not under pressure, realizing automatic return to prepare for the next powder pressing operation.

[0077] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A coffee powder pressing device, characterized in that: Comprising, A downward pressing assembly, including a pressing rod, wherein a pressure relief member and a first elastic member are arranged inside the pressing rod, and the pressure relief member is provided with a first limiting portion; a limiting member is arranged at the bottom of the pressing rod, the pressing rod can move relative to the limiting member, and the limiting member is provided with a second limiting portion and a pressed portion, and the second limiting portion is used for limiting cooperation with the first limiting portion to limit the movement of the pressure relief member when the pressing rod moves relative to the limiting member; a pressing portion is arranged on the pressing rod, and the pressing portion is used for pressing the pressed portion during the movement of the pressing rod relative to the limiting member, and the pressed portion is used for providing a force when being pressed to drive the second limiting portion to disengage from the first limiting portion; A powder pressing assembly, including a powder pressing seat, the powder pressing seat is arranged at the bottom of the downward pressing assembly, and a positioning portion is arranged on the powder pressing seat; the pressing rod is used for pressing downward under an external force and driving the powder pressing seat to press downward; the first elastic member is used for providing a constant elastic force to drive the pressure relief member to press downward and impact the positioning portion after the second limiting portion disengages from the first limiting portion.

2. The coffee powder pressing device according to claim 1, characterized in that: The pressure relief member includes a pressure relief column, and a first step structure is arranged on the outer periphery of the pressure relief column; the first limiting portion includes the first step structure; The limiting member includes two elastic arms arranged oppositely, the second limiting portion is located at the upper end of the elastic arm, and the upper end of the elastic arm abuts against the first step structure.

3. The coffee powder pressing device according to claim 2, wherein: A pressing disc is arranged at the bottom of the pressing rod, two connecting grooves are arranged on the pressing disc, and the two connecting grooves are arranged at intervals so that a pressing portion is formed between the two connecting grooves; the two elastic arms are arranged at intervals and respectively pass through the two connecting grooves; the lower ends of the two elastic arms have pressed sections, and the two pressed sections are bent close to each other to form the pressed portion.

4. The coffee powder pressing device according to claim 3, characterized in that: A guiding column is arranged on the pressing disc, the pressure relief column has a guiding channel, and the guiding channel axially penetrates through the end of the pressure relief column; the guiding column is slidably connected to the guiding channel.

5. The coffee powder pressing device according to claim 4, characterized in that: The guiding column has a guiding section, a connecting section and a pressing section connected in sequence, the guiding section is slidably connected inside the guiding channel, the connecting section is screwed to the pressing disc, and the pressing section protrudes from the bottom end of the pressing disc; the pressure relief member is used for pressing the pressing section when pressing downward, and the pressing section is used for impacting the positioning portion when being pressed.

6. The coffee powder pressing device according to claim 5, wherein: An installation groove is arranged on the powder pressing seat, the lower ends of the two elastic arms are connected by a connecting arm, and the connecting arm is inserted into the installation groove.

7. The coffee powder pressing device according to claim 2 or 4, characterized in that: A second step structure is further arranged at the upper end of the pressure relief column, one end of the first elastic member abuts against the top wall of the pressing rod, and the other end of the first elastic member abuts against the second step structure.

8. The coffee powder pressing device according to claim 3, wherein: The powder pressing assembly includes a gland and a sliding sleeve. The gland is sleeved outside the sliding sleeve. A first flange is provided at the upper end of the gland, and the upper end of the sliding sleeve abuts against the lower end of the first flange. The powder pressing seat is connected to the bottom of the sliding sleeve. A second elastic member is provided between the gland and the sliding sleeve, and the second elastic member is used to provide an elastic force to drive the sliding sleeve to move closer to the first flange. The powder pressing seat is used to drive the sliding sleeve to slide downward relative to the gland when the pressing rod presses downward.

9. The coffee powder pressing device according to claim 8, characterized in that: A sliding channel is provided in the sliding sleeve, and the pressing rod is slidably connected to the sliding channel. A second flange is provided in the sliding channel. The edge of the pressing disc extends outward relative to the pressing rod to form a protruding platform, and the upper end of the protruding platform abuts against the lower end of the second flange.

10. The coffee powder pressing device according to claim 9, characterized in that: A third elastic member is provided in the sliding channel. The two ends of the third elastic member respectively abut against the powder pressing seat and the bottom of the pressing disc, and the third elastic member is used to provide an elastic force to drive the pressing disc away from the powder pressing seat.

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