Powder pressing hammer

Abstract

The utility model provides a powder pressing hammer. Wherein the powder hammer assembly comprises a fixed seat and a powder disc, an installation space penetrating through the top and the bottom of the fixed seat is formed in the fixed seat in the axial direction, and the powder disc is movably arranged at the bottom of the fixed seat; the pressing rod assembly is arranged in the installation space in a penetrating mode. The pressing rod assembly comprises a first sleeve, a second sleeve and a third sleeve which are sequentially arranged from inside to outside in a sliding and sleeving mode in the radial direction. A first elastic piece is connected between the second sleeve and the first sleeve, a second elastic piece is connected between the third sleeve and the fixed seat, a third elastic piece is connected between the bottom of the first sleeve and the powder disc, and the bottom of the third sleeve is fixedly connected with the powder disc; limiting structures are arranged between the sleeves, and the limiting structures are used for compressing the first elastic piece so that the second sleeve can impact the powder disc to store force. According to the powder pressing hammer, large-force impact on the powder disc can be achieved, and finally high-density compaction of coffee powder is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of coffee making equipment, and more specifically, relates to a coffee powder tamper. Background Art

[0002] The tamping hammer is used to compact the ground coffee into the coffee basket, ensuring that the density of the grounds meets the pressure requirements during the extraction process. In the prior art, the tamping hammer is equipped with an impact hammer to impact the coffee grounds in the coffee basket after initial compaction. However, the impact force of the impact hammer in the prior art is limited, making it difficult to compact the coffee grounds in the coffee basket to a high density. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a powder compacting hammer to solve the technical problem of limited compaction density of coffee powder in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is to provide a powder compacting hammer, which includes a pressure rod assembly and a powder hammer assembly arranged at the bottom of the pressure rod assembly;

[0005] The powder hammer assembly includes a fixed seat and a powder tray. An installation space is formed on the fixed seat along the axial direction and passes through the top and bottom of the fixed seat. The powder tray is movably arranged at the bottom of the fixed seat. The pressure rod assembly is arranged inside the installation space.

[0006] The pressure rod assembly includes a first sleeve, a second sleeve and a third sleeve which are slidably sleeved on each other in sequence from the inside to the outside in the radial direction; a first elastic member is connected between the second sleeve and the first sleeve, a second elastic member is connected between the third sleeve and the fixed seat, a third elastic member is connected between the bottom of the first sleeve and the powder pan, and the bottom of the third sleeve is fixedly connected to the powder pan; a limiting structure is provided between the first sleeve, the second sleeve and the third sleeve, and the limiting structure is used to compress the first elastic member to accumulate force so that the second sleeve impacts the powder pan.

[0007] Optionally, when the first sleeve moves downward in the axial direction, the limiting structure is used to keep the second sleeve stationary; when the first sleeve moves to an extreme position in the axial direction, the limiting structure releases the second sleeve.

[0008] Optionally, the limiting structure includes a first guide groove formed on the peripheral wall of the first sleeve and a second guide groove formed on the peripheral wall of the second sleeve, and a first pin rod fixed in the axial direction of the third sleeve and simultaneously passing through the first guide groove and the second guide groove, and the first guide groove and the second guide groove are both extended along the same axial direction; when the first sleeve moves until the first pin rod changes from the first position to the second position in the first guide groove, the first pin rod changes from the third position to the fourth position in the second guide groove.

[0009] Optionally, the second guide groove includes a second straight section and a second inclined section located at the bottom of the second straight section, the third position is located on the second inclined section, and the fourth position is located on the second straight section; the first guide groove includes at least a first inclined section arranged opposite to the inclined section on the second guide groove, the first position is located on one side of the bottom of the first inclined section, and the second position is located on the first inclined section.

[0010] Optionally, the first guide groove is roughly ridge-shaped, and two opposite sides of the first guide groove are parallel to the axial direction of the first sleeve; the first position is located on the straight edge of the first guide groove connected to the bottom, and the second position is located on the oblique edge of the top of the first guide groove.

[0011] Optionally, the first guide groove is roughly in the shape of a right-angled trapezoid, and the bottom and top sides of the trapezoid on the first guide groove are parallel to the axial direction; the first position is located on a straight side connected to the hypotenuse of the trapezoid and parallel to the axial direction, and the second position is located at the top of the hypotenuse of the trapezoid.

[0012] Optionally, in a projection direction parallel to the radial direction, a projection area of ​​the first guide groove is larger than a projection area of ​​the second guide groove; and in an initial position state, a projection area of ​​the second guide groove is completely located within the projection area of ​​the first guide groove.

[0013] Optionally, a circumferential limiting structure for limiting the circumferential rotation of the first sleeve and the second sleeve is further provided between the first sleeve, the second sleeve and the third sleeve; the circumferential limiting structure includes axial guide grooves opened at the same radial position on the circumferential walls of the first sleeve and the second sleeve and limiting pins arranged through each of the axial guide grooves, and both ends of the limiting pins are respectively fixed to the third sleeve.

[0014] Optionally, the third sleeve is sleeved inside the fixing seat and the bottom is fixedly connected to the powder tray.

[0015] Optionally, a guide ring is further included; the bottom edge of the fixing seat is tilted, the inner side of the opening of the guide ring is tilted, and the inner diameter of the opening of the guide ring is adapted to the diameter of the powder tray.

[0016] The powder compacting hammer provided in the embodiments of the present application has at least the following beneficial effects:

[0017] By setting the first sleeve, the second sleeve and the third sleeve, at the same time, a first elastic member is connected between the second sleeve and the first sleeve, a second elastic member is connected between the third sleeve and the fixed seat, and a third elastic member is connected between the bottom of the first sleeve and the powder pan, and the second sleeve is configured to be able to impact the powder pan. Since the second sleeve is arranged between the first sleeve and the third sleeve, the axial sliding stroke of the second sleeve is longer. In the impact storage stage, the second spring can be fully compressed by the large stroke, so that the second sleeve has a longer acceleration stroke, so as to achieve a large force impact on the powder pan, and finally achieve high-density compaction of the coffee powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is an exploded view of a powder compacting hammer in some embodiments of the present application;

[0020] Figure 2 This is a cross-sectional view of a powder compacting hammer in some embodiments of the present application;

[0021] Figure 3 and Figure 4 This is a cross-sectional schematic diagram of a powder compacting hammer assembly in some embodiments of the present application;

[0022] Figure 5 A perspective view of the second sleeve in some embodiments of the present application;

[0023] Figure 6 A perspective view of a first sleeve in some embodiments of the present application;

[0024] Figure 7 This is a three-dimensional view of the first sleeve in some other embodiments of the present application. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0026] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element.

[0028] When an element is referred to as being “connected to” another element, it can be directly connected to the another element or indirectly connected to the another element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0031] In the description of the present application, “plurality” means two or more, unless otherwise clearly defined.

[0032] Please also refer to Figures 1 to 7 , the powder compacting hammer provided in the embodiment of the present application is now described.

[0033] Understandably, the reference Figure 1 and Figure 2 The powder hammer described in this application includes a pressure rod assembly 11 and a powder hammer assembly 12 arranged at the bottom of the pressure rod assembly 11.

[0034] The tamper assembly 12 includes a fixed seat 121 and a powder tray 122. A mounting space 12a is formed axially on the fixed seat 121, extending through the top and bottom of the fixed seat 121. The powder tray 122 is movably mounted at the bottom of the fixed seat 121. The pressure rod assembly 11 is disposed within the mounting space 12a, with its bottom abutting against the powder tray 122. The pressure rod assembly 11 is used to push the powder tray 122 to move axially along the fixed seat 121. Thus, when compacting the coffee powder in the powder bowl, the pressure rod assembly 11 is first pressed to drive the tamper assembly 12 to flatten the coffee powder. After the coffee powder is initially flattened, the pressure rod assembly 11 is pressed again, allowing the pressure rod assembly 11 to push the tamper assembly 12 to further compact the coffee powder, thereby ensuring that the density of the coffee powder meets extraction requirements.

[0035] refer to Figure 3 and Figure 4 Furthermore, the pressure rod assembly 11 includes a first sleeve 111, a second sleeve 112, and a third sleeve 113 that are slidably sleeved on each other from the inside to the outside in the radial direction. A first elastic member 114 is connected between the top of the second sleeve 112 and the first sleeve 111. The second sleeve 112 can move to the bottom to contact the powder pan 122. A second elastic member 115 is connected between the lower side of the flange of the third sleeve 113 and the fixed seat 121. The bottom of the third sleeve 113 is fixedly connected to the powder pan 122. A third elastic member 116 is connected between the bottom of the first sleeve 111 and the powder pan 122. In addition, a limiting structure 117 is provided between the first sleeve 111, the second sleeve 112, and the third sleeve 113. The limiting structure 117 is used to limit the movement of the second sleeve 112 relative to the third sleeve 113, thereby compressing the first elastic member 114 and accumulating force to cause the second sleeve 112 to impact the powder pan 122.

[0036] When the first sleeve 111 moves downward in the axial direction, the limiting structure 117 is used to keep the second sleeve 112 stationary; when the first sleeve 111 moves to the extreme position in the axial direction, the limiting structure 117 releases the second sleeve.

[0037] Specifically, during the operation of using a tamping hammer to compact the coffee powder in the powder basket, the working process and principle of the tamping hammer are as follows:

[0038] Initial compaction stage. During this stage, the user continues to press down the pressure rod assembly 11, and the pressure rod assembly 11 and the powder hammer assembly 12 as a whole synchronously transmit pressure to the coffee powder in the powder bowl, so that the coffee powder in the powder bowl is initially flattened. It should be understood that the coffee powder is flattened but still in a loose state. At this time, the first elastic member 114, the second elastic member 115 and the third elastic member 116 all maintain their initial state, and the first sleeve 111, the second sleeve 112 and the third sleeve 113 also remain in a relatively static state. It should be understood that during this stage, the coffee powder in the powder bowl is flattened to a certain density.

[0039] Impact accumulation stage. During this stage, the user continues to press down the lever assembly 11, the third elastic member 116 is continuously compressed, and due to the presence of the limiting structure 117, the first sleeve 111 moves relative to the second sleeve 112, while the second sleeve 112, the third sleeve 113 and the hammer assembly 12 remain relatively stationary. Therefore, the first elastic member 114 is continuously compressed.

[0040] Impact release stage. During this stage, the user continues to press down on the pressure rod assembly 11. When the first elastic member 114 is compressed to a point that exceeds the restriction of the limiting structure 117 on the second sleeve 112, the limiting structure 117 releases the restriction on the second sleeve 112. At this time, the elastic force of the first elastic member 114 is released and the second sleeve 112 is impacted to slide axially so that the bottom of the second sleeve 112 pushes the powder tray 122 to impact the coffee powder in the powder bowl, thereby further compacting the coffee powder in the powder bowl to a higher density distribution state. During this stage, since the bottom of the third sleeve 113 is fixedly connected to the powder tray 122, the powder tray 122 is impacted and drives the third sleeve 113 to move axially. Therefore, the second elastic member 115 is also compressed.

[0041] Reset phase. During this phase, the user no longer applies pressure to the pressure rod assembly 11. The second elastic member 115 pushes the third sleeve 113 axially to reset, causing the third sleeve 113 to pull the powder pan 122 axially to reset (i.e., until the top of the powder pan 122 abuts against the fixing seat 121). The third elastic member 116 also pushes the first sleeve 111 axially to reset, while the first elastic member 114 returns to its initial state. During this process, the third sleeve 113 drives the powder pan 122 away from the surface of the coffee powder, and the coffee powder is tightly compacted.

[0042] By arranging the first sleeve 111, the second sleeve 112 and the third sleeve 113 in the pressure rod assembly 11, at the same time, a first elastic member 114 is connected between the second sleeve 112 and the first sleeve 111, a second elastic member 115 is connected between the third sleeve 113 and the fixed seat 121, and a third elastic member 116 is connected between the bottom of the first sleeve 111 and the powder pan 122, and the second sleeve 112 is configured to be able to impact the powder pan 122. Since the second sleeve 112 is arranged between the first sleeve 111 and the third sleeve 113, the axial sliding stroke of the second sleeve 112 is longer. In the impact storage stage, the second spring 115 can be fully compressed by the large stroke, so that the second sleeve 112 has a longer acceleration stroke, so as to achieve a large force impact on the powder pan 122, and finally achieve high-density compaction of the coffee powder.

[0043] refer to Figures 3 to 7 In some embodiments, the aforementioned limiting structure 117 includes a first guide groove 1171 formed on the peripheral wall of the first sleeve 111, a second guide groove 1172 formed on the peripheral wall of the second sleeve 112, and a first pin 1173. The first guide groove 1171 and the second guide groove 1172 are both extended along the same axial direction. The first pin 1173 is fixedly arranged on the third sleeve 113 in the axial direction and passes through the first guide groove 1171 and the second guide groove 1172 at the same time.

[0044] In some embodiments, the first pin 1173 is fixedly arranged in the axial direction of the third sleeve 113. For example, an axial limiting groove 1174 is circumferentially formed on the side wall of the third sleeve 113, and the first pin 1173 is slidably arranged in the axial limiting groove 1174.

[0045] When the first sleeve 111 is pressed downward, the first pin 1173 first slides in the first guide groove 1171 and then slides in the second guide groove 1172 to respectively realize impact force storage and elastic force release.

[0046] refer to Figures 5 to 7 It should be understood that the first guide groove 1171 has a first position A1 and a second position A2, and the second guide groove 1172 has a third position A3 and a fourth position A4; and the axial positions of the first position A1 and the second position A2 in the first guide groove 1171 can overlap with the axial position of the third position A3 in the second guide groove 1172. When the first sleeve 111 moves until the first pin 1173 changes from the first position A1 to the second position A2 in the first guide groove 1171, the first pin 1173 changes from the third position A3 to the fourth position A4 in the second guide groove 1172.

[0047] refer to Figure 5In some specific embodiments, the second guide groove 1172 includes a second straight section 11722 and a second oblique section 11721 located at the bottom of the second straight section. The third position A3 is located on the second oblique section 11721, and the fourth position A4 is located on the second straight section 11722. Figure 6 and Figure 7 For the first guide groove 1171 , the first guide groove 1171 at least includes a first inclined section 11712 arranged opposite to the upper inclined section of the second guide groove 1172 , the first position A1 is located on one side of the bottom of the first inclined section 11712 , and the second position A2 is located on the first inclined section 11712 .

[0048] Specifically, the first guide groove 1171 may have the following implementations.

[0049] refer to Figure 6 In some embodiments, the first guide groove 1171 is generally prismatic in shape. Each corner of the first guide groove 1171 is rounded, and two opposing sides of the first guide groove 1171 are parallel to the axial direction of the first sleeve 111. The first position A1 is located in a straight-side section 11711 connected to the bottom of the first guide groove 1171, and the second position A2 is located in a beveled section 11712 at the top of the first guide groove 1171.

[0050] refer to Figure 7 In other embodiments, the first guide groove 1171 is roughly in the shape of a right-angled trapezoid, and the bottom and top sides of the trapezoid on the first guide groove 1171 are parallel to the axial direction; the first position A1 is located on the straight side section 11711 connected to the hypotenuse of the trapezoid and parallel to the axial direction, and the second position A2 is located at the top of the hypotenuse 11712 of the trapezoid.

[0051] refer to Figures 3 to 7 It should be understood that, in the projection direction parallel to the radial direction, the projection area of ​​the first guide groove 1171 is larger than the projection area of ​​the second guide groove 1172; and, in the initial position state, and in the radial projection direction, the projection area of ​​the second guide groove 1172 can be completely located within the projection area of ​​the first guide groove 1171.

[0052] In summary, the movement process of the first pin 1173 in the first guide groove 1171 and the second guide groove 1172 is as follows.

[0053] During the impact accumulation phase, the first sleeve 111 continues to press downward, while the second and third sleeves 112 and 113 maintain their axial positions. The first pin 1173 moves within the first guide slot 1171 from the bottom along the straight-edge section 11711 toward the top beveled section 11712. As the first pin 1173 slides from the straight-edge section 11711 into the top beveled section 11712, it moves from the first position A1 to the second position A2. At this point, the first guide slot 1171 has moved to a point where the top beveled section 11712 overlaps with the bottom curved section 11721 of the second guide slot 1172.

[0054] Impact release stage. The first pin 1173 has moved to the critical point of the second position A2. When the first sleeve 111 is continuously pressed downward, the first pin 1173 moves along the top bevel 11712 on the first guide groove 1171. That is, the movement of the first pin 1173 is a composite movement of axial and lateral motion. At this time, the first pin 1173 moves toward the straight section 11722 under the guidance of the bottom bent section 11721 of the second guide groove 1172 to slide to the bottom of the straight section 11722. After the first pin 1173 completely enters the second guide groove, After the straight section 11722 of 1172 is completed, the first pin rod 1173 is completely located at the top of the first guide groove 1171, and the first pin rod 1173 is not restricted in the axial direction of the second guide groove 1172. At this time, under the elastic force of the second elastic member 115, the second sleeve 112 impacts downward in the axial direction, so that the first pin rod 1173 slides rapidly from the bottom of the straight section 11722 to the top of the straight section 11722 in the second guide groove 1172. During this stage, the bottom of the second sleeve 112 hits the powder plate 122.

[0055] refer to Figures 3 to 7 In some embodiments, a circumferential limiting structure 118 is further provided between the first sleeve 111, the second sleeve 112 and the third sleeve 113 for limiting the circumferential rotation of the first sleeve 111 and the second sleeve 112; the circumferential limiting structure 118 includes axial guide grooves 1181 opened at the same axial position on the circumferential walls of the first sleeve 111 and the second sleeve 112 and limiting pins 1182 arranged through each axial guide groove 1181, and both ends of the limiting pins 1182 are respectively fixed to the third sleeve 113.

[0056] In some embodiments, the third sleeve 113 is sleeved within the fixing seat 121 and fixedly connected to the powder pan 122 at its bottom. Specifically, the third sleeve 113 has a fixed travel range within the fixing seat 121. Thus, after the second sleeve 112 impacts the powder pan 122, the third sleeve 113 can pull the powder pan 122 axially back to its original position and push the second sleeve 112 back to its original position.

[0057] refer to Figure 1In some embodiments, the tamper further includes a guide ring 20. The bottom edge of the fixing base 121 is tilted, and the inner side of the opening of the guide ring 20 is tilted. The inner diameter of the opening of the guide ring 20 matches the diameter of the powder tray 122. By providing the guide ring 20, during use, the guide ring 20 can be placed on the opening of the powder bowl. When the tamper assembly 12 compacts the coffee powder in the powder bowl, the powder tray 122 can smoothly enter the opening of the powder bowl under the guidance of the guide ring 20, thereby reducing the possibility of stuck.

[0058] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A powder compacting hammer, characterized in that: include: A pressure rod assembly and a powder hammer assembly arranged at the bottom of the pressure rod assembly; The powder hammer assembly includes a fixed seat and a powder tray. An installation space is formed on the fixed seat along the axial direction and passes through the top and bottom of the fixed seat. The powder tray is movably arranged at the bottom of the fixed seat. The pressure rod assembly is arranged inside the installation space. The pressure rod assembly includes a first sleeve, a second sleeve and a third sleeve which are slidably sleeved on each other in sequence from the inside to the outside in the radial direction; a first elastic member is connected between the second sleeve and the first sleeve, a second elastic member is connected between the third sleeve and the fixed seat, a third elastic member is connected between the bottom of the first sleeve and the powder pan, and the bottom of the third sleeve is fixedly connected to the powder pan; a limiting structure is provided between the first sleeve, the second sleeve and the third sleeve, and the limiting structure is used to compress the first elastic member to accumulate force so that the second sleeve impacts the powder pan.

2. The powder compacting hammer according to claim 1, wherein: When the first sleeve moves downward in the axial direction, the limiting structure is used to keep the second sleeve stationary; when the first sleeve moves to the extreme position in the axial direction, the limiting structure releases the second sleeve.

3. The powder compacting hammer according to claim 2, wherein: The limiting structure includes a first guide groove formed on the peripheral wall of the first sleeve and a second guide groove formed on the peripheral wall of the second sleeve, and a first pin rod fixed in the axial direction of the third sleeve and simultaneously passing through the first guide groove and the second guide groove. The first guide groove and the second guide groove are both extended along the same axial direction; when the first sleeve moves until the first pin rod changes from the first position to the second position in the first guide groove, the first pin rod changes from the third position to the fourth position in the second guide groove.

4. The powder compacting hammer according to claim 3, wherein: The second guide groove includes a second straight section and a second inclined section located at the bottom of the second straight section, the third position is located on the second inclined section, and the fourth position is located on the second straight section; the first guide groove includes at least a first inclined section arranged opposite to the inclined section on the second guide groove, the first position is located on one side of the bottom of the first inclined section, and the second position is located on the first inclined section.

5. The powder compacting hammer according to claim 4, characterized in that: The first guide groove is roughly ridge-shaped, and two opposite sides of the first guide groove are parallel to the axial direction of the first sleeve; the first position is located on the straight side of the first guide groove connected to the bottom, and the second position is located on the oblique side of the top of the first guide groove.

6. The powder compacting hammer according to claim 4, characterized in that: The first guide groove is roughly in the shape of a right-angled trapezoid, and the bottom and top sides of the trapezoid on the first guide groove are parallel to the axial direction; the first position is located on a straight side connected to the hypotenuse of the trapezoid and parallel to the axial direction, and the second position is located at the top of the hypotenuse of the trapezoid.

7. The powder compacting hammer according to any one of claims 3 to 6, characterized in that: In a projection direction parallel to the radial direction, a projection area of ​​the first guide groove is larger than a projection area of ​​the second guide groove; and in an initial position state, a projection area of ​​the second guide groove is completely located within the projection area of ​​the first guide groove.

8. The powder compacting hammer according to any one of claims 1 to 6, characterized in that: A circumferential limiting structure for limiting the circumferential rotation of the first sleeve and the second sleeve is also provided between the first sleeve, the second sleeve and the third sleeve; the circumferential limiting structure includes axial guide grooves opened at the same radial position on the circumferential walls of the first sleeve and the second sleeve and limiting pins arranged through each of the axial guide grooves, and both ends of the limiting pins are respectively fixed to the third sleeve.

9. The powder compacting hammer according to any one of claims 1 to 6, characterized in that: The third sleeve is sleeved inside the fixing seat and the bottom thereof is fixedly connected to the powder tray.

10. The powder compacting hammer according to any one of claims 1 to 6, characterized in that: It also includes a guide ring; the bottom edge of the fixing seat is tilted, the inner side of the opening of the guide ring is tilted, and the inner diameter of the opening of the guide ring is adapted to the diameter of the powder tray.

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