Coffee grinder

Abstract

The application discloses a coffee grinder, and relates to the technical field of mixers. The coffee grinder comprises a shell and a grinding assembly. The shell is provided with a first accommodating cavity and a first opening. The first opening is arranged at one end of the first accommodating cavity in an axial direction. The grinding assembly comprises a plurality of grinding needles, a connecting piece and a pushing piece. The pushing piece is arranged at one end of the connecting piece away from the first opening. The side of the pushing piece close to the connecting piece is provided with a pushing surface. The distance between the pushing surface and the central axis of the first accommodating cavity gradually increases in the axial direction towards the first opening. The plurality of grinding needles are connected in parallel on the connecting piece. The pushing piece and the connecting piece are synchronously moved relative to the shell in the axial direction. The moving stroke of the pushing piece is greater than that of the connecting piece. The grinding needles are extended out of or retracted into the first accommodating cavity through the first opening. The end of each grinding needle is in abutment with the pushing surface. The coffee grinder can meet the use requirements of different users.

Description

Technical Field

[0001] This utility model relates to the field of stirrer technology, and more specifically, to a coffee powder stirrer. Background Technology

[0002] Coffee stirrers are an indispensable tool in the coffee-making process, playing a vital role in improving coffee quality. By rotating the stirring needle, coffee stirrers ensure that coffee grounds are evenly distributed within the container. This process effectively prevents coffee grounds from clumping and static electricity from causing agglomeration, thereby significantly improving the extraction effect and taste quality of the coffee. However, traditional coffee stirrers have a limited arrangement of stirring needles, making it difficult to meet the different user experiences and needs, which to some extent limits the product's practicality and user experience. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a coffee grinder that can meet the needs of different users.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] This application provides a coffee stirrer with an axial direction. The coffee stirrer includes: a housing with a first receiving cavity and a first opening communicating with the first receiving cavity, the first opening being located at one end of the first receiving cavity along the axial direction; a stirring assembly disposed within the first receiving cavity, the stirring assembly including multiple stirring needles, a connector, and a pushing member, the pushing member being located at the end of the connector along the axial direction away from the first opening, the pushing member having a pushing surface on the side of the connector along the axial direction, the pushing surface being angled to the axial direction, and the distance between the pushing surface and the central axis of the first receiving cavity gradually increasing along the axial direction towards the first opening, the multiple stirring needles being spaced apart and parallel to each other on the connector; wherein, the connector moves relative to the housing along the axial direction to allow the stirring needles to extend or retract into the first receiving cavity through the first opening, the pushing member and the connector move synchronously, and the moving stroke of the pushing member is greater than the moving stroke of the connector, so that one end of each stirring needle abuts against the pushing surface.

[0006] In an optional embodiment, the coffee stirrer also has a circumferential direction, and the connector includes a first connecting portion and a plurality of second connecting portions, the plurality of second connecting portions being connected to the first connecting portion and spaced apart along the circumferential direction. In some of the stirring needles, each stirring needle is fixedly connected to one of the second connecting portions, and the second connecting portion is oscillating relative to the first connecting portion about the axial direction.

[0007] In an optional embodiment, the connector further includes a plurality of third connecting portions, each of which is connected to the first connecting portion and is spaced apart along the circumferential direction. A plurality of second connecting portions are arranged around the plurality of third connecting portions. In some of the powder stirring needles, each powder stirring needle is fixedly connected to the third connecting portion, and the third connecting portion is oscillating relative to the first connecting portion about the axial direction.

[0008] In an optional embodiment, the pushing member includes a first pushing portion and a second pushing portion, the first pushing portion being connected to the second pushing portion, and the first pushing portion being disposed around the second pushing portion along the circumferential direction. The pushing surface includes a first pushing surface and a second pushing surface, the first pushing surface being disposed on the side of the first pushing portion near the connecting member along the axial direction, and the second pushing surface being disposed on the side of the second pushing portion near the connecting member along the axial direction. Each powder stirring needle protrudes at least partially from the first connecting portion along the axial direction toward the direction near the pushing member, and the first pushing surface abuts against each powder stirring needle connected to the second connecting portion, and the second pushing surface abuts against each powder stirring needle connected to the third connecting portion.

[0009] In an optional embodiment, the coffee stirrer further includes an inner shell disposed within the first receiving cavity and rotatable relative to the outer shell about the axial direction. The cavity wall of the first receiving cavity is provided with a first spiral groove extending about the axial direction. The inner shell is provided with a second receiving cavity and a first sliding groove. The first sliding groove extends about the axial direction and communicates with the second receiving cavity and the first spiral groove. The coffee stirrer also has a radial direction. The stirring assembly further includes a slider. The slider and the connecting member are both disposed within the second receiving cavity. The slider is connected to the surface of the connecting member and at least partially protrudes from the connecting member about the radial direction. The slider at least partially passes through the first sliding groove and the first spiral groove.

[0010] In an optional embodiment, the coffee mixer further has a circumferential direction, and the wall of the first receiving cavity is provided with a second spiral groove extending around the axial direction. The second spiral groove is spaced apart from and parallel to the first spiral groove. The inner shell is also provided with a second sliding groove, which is spaced apart from the first sliding groove along the circumferential direction, and the second sliding groove extends along the axial direction. The second sliding groove communicates with the second receiving cavity and the second spiral groove. The pusher is disposed in the second receiving cavity and at least partially passes through the second sliding groove and the second spiral groove.

[0011] In an optional embodiment, the inner shell is further provided with a third sliding groove, which communicates with the first sliding groove and is located at one end of the first sliding groove near the first opening along the axial direction, and extends along the circumferential direction.

[0012] In an optional embodiment, the angle between the first spiral groove and the second spiral groove and the axial direction is α, satisfying: 30°≤α≤60°.

[0013] In an optional embodiment, the coffee mixer further includes a cap, the inner shell at least partially protruding from the outer shell at an end away from the first opening in the axial direction and connected to the cap, the cap rotating relative to the outer shell about the axial direction.

[0014] In an optional embodiment, in the axial direction, the cross-sectional area of ​​the cap perpendicular to the axial direction gradually decreases toward the direction away from the first opening.

[0015] The coffee mixer of this application has the following advantages:

[0016] In the coffee stirrer of this application, when the connecting member moves axially relative to the outer shell, it can drive multiple stirring needles to move axially relative to the outer shell, allowing the stirring needles to extend or retract into the first receiving cavity. When the stirring needles extend into the first receiving cavity, they can stir the coffee powder. When the stirring needles retract into the first receiving cavity, they can be stored, preventing accidental damage. During the process of the stirring needles extending into the first receiving cavity, since the pushing member and the connecting member move synchronously, and the moving stroke of the pushing member is greater than that of the connecting member, multiple stirring needles can extend parallel to each other outside the first receiving cavity when the pushing member and the connecting member move synchronously. When the connecting member stops moving axially, the pushing member can still gradually move axially. The mixing needles are positioned close to the connector so that one end of each needle abuts against the pushing surface of the pusher. Since the pushing surface is angled to the axial direction, and the distance between the pushing surface and the central axis of the first receiving cavity gradually increases along the axial direction towards the first opening, when one end of the mixing needle abuts against the pushing surface of the pusher, the pushing surface causes the mixing needle to swing around the axial direction. This allows multiple mixing needles to swing from a parallel state to a dispersed state, thus allowing them to be exposed outside the first receiving cavity in different forms as they extend out of the cavity. This enables the multiple mixing needles to stir the coffee powder in a parallel or dispersed state, meeting the mixing needs of coffee with different particle sizes and satisfying the needs of different users. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of the coffee mixer in this application is shown;

[0019] Figure 2 A cross-sectional view of the coffee mixer in this application is shown. Figure 1 ;

[0020] Figure 3 A cross-sectional view of the coffee mixer in this application is shown. Figure 2 ;

[0021] Figure 4 A cross-sectional view of the coffee mixer in this application is shown. Figure 3 ;

[0022] Figure 5 An exploded view of the powder mixing assembly in this application is shown.

[0023] Figure 6 A cross-sectional view of the outer shell and the powder mixing assembly in this application is shown. Figure 1 ;

[0024] Figure 7 A cross-sectional view of the outer shell and the powder mixing assembly in this application is shown. Figure 2 ;

[0025] Figure 8 A three-dimensional structural diagram of the inner shell and the powder mixing assembly in this application is shown.

[0026] Explanation of key component symbols:

[0027] 100 - Outer shell; 110 - First receiving cavity; 120 - First opening; 130 - First spiral groove; 140 - Second spiral groove;

[0028] 200 - Powder mixing assembly; 210 - Powder mixing needle; 220 - Connector; 221 - First connecting part; 222 - Second connecting part; 223 - Third connecting part; 230 - Pushing part; 231 - First pushing part; 2311 - First pushing surface; 232 - Second pushing part; 2321 - Second pushing surface; 240 - Sliding part; 250 - Connecting sleeve;

[0029] 300 - Inner shell; 310 - Second receiving cavity; 320 - First sliding groove; 330 - Second sliding groove; 340 - Third sliding groove; 350 - Limiting groove; 360 - Second opening;

[0030] 400-cap;

[0031] 500 - Limiting component;

[0032] 600 - Elastic tensioner;

[0033] x - axial direction; y - circumferential direction; z - radial direction. Detailed Implementation

[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] Reference Figures 1 to 4 As shown, the coffee mixer involved in the embodiments of this application includes: having an axial direction x, the coffee mixer includes: a housing 100 and a mixing assembly 200.

[0040] Specifically, the outer casing 100 is provided with a first receiving cavity 110 and a first opening 120 communicating with the first receiving cavity 110. The first opening 120 is located at one end of the first receiving cavity 110 along the axial direction x. The powder stirring assembly 200 is disposed in the first receiving cavity 110. The powder stirring assembly 200 includes multiple powder stirring needles 210, a connector 220, and a pushing member 230. The pushing member 230 is located at the end of the connector 220 away from the first opening 120 along the axial direction x. The side of the pushing member 230 close to the connector 220 along the axial direction x has a pushing surface, and the pushing surface is at an angle to the axial direction x. The distance between the push surface and the central axis of the first receiving cavity 110 gradually increases along the axial direction x towards the first opening 120. Multiple powder stirring needles 210 are spaced apart and connected in parallel to the connector 220. The connector 220 moves relative to the outer shell 100 along the axial direction x so that the powder stirring needles 210 extend or retract into the first receiving cavity 110 through the first opening 120. The pusher 230 moves synchronously with the connector 220, and the travel of the pusher 230 is greater than the travel of the connector 220 so that one end of each powder stirring needle 210 abuts against the push surface.

[0041] It should be noted that the axial direction x is Figure 1 The direction indicated by x in the middle.

[0042] In the coffee stirrer of this application, when the connector 220 moves relative to the housing 100 in the axial direction x, the connector 220 can drive multiple stirring needles 210 to move relative to the housing 100 in the axial direction x, so that the stirring needles 210 can extend or retract into the first receiving cavity 110, as shown in the reference. Figure 3 as well as Figure 4 As shown, when the stirring needle 210 extends out of the first receiving cavity 110, the coffee powder can be stirred by the stirring needle 210. (Refer to...) Figure 2 As shown, when the stirring needle 210 retracts into the first receiving cavity 110, it can be stored, preventing accidental damage. During the process of the stirring needle 210 extending out of the first receiving cavity 110, because the pushing member 230 and the connecting member 220 move synchronously, and the travel distance of the pushing member 230 is greater than that of the connecting member 220, therefore, referring to... Figure 3 As shown, when the pusher 230 and the connector 220 move synchronously, multiple powder-stirring needles 210 can extend parallel to each other outside the first receiving cavity 110, as shown in the figure. Figure 4As shown, when the connector 220 stops moving along the axial direction x, the pusher 230 can still gradually approach the connector 220 along the axial direction x, so that one end of the stirring needle 210 abuts against the pushing surface of the pusher 230. Since the pushing surface is angled to the axial direction x, and the distance between the pushing surface and the central axis of the first receiving cavity 110 gradually increases along the axial direction x towards the first opening 120, when one end of the stirring needle 210 abuts against the pushing surface of the pusher 230, it can... The pushing surface causes the stirring needles 210 to swing around the axial direction x, so that multiple stirring needles 210 swing from a parallel state to a dispersed state. In this way, as the stirring needles 210 extend out of the first receiving cavity 110, multiple stirring needles 210 can be exposed outside the first receiving cavity 110 in different forms, so that multiple stirring needles 210 can stir coffee powder in a parallel state or a dispersed state to meet the stirring needs of coffee with different particle sizes, thereby meeting the needs of different users.

[0043] Reference Figure 5 As shown, the coffee mixer also has a circumferential direction y. The connector 220 includes a first connecting part 221 and a plurality of second connecting parts 222. The plurality of second connecting parts 222 are connected to the first connecting part 221 and are spaced apart along the circumferential direction y. In some of the stirring needles 210, each stirring needle 210 is fixedly connected to a second connecting part 222. The second connecting part 222 can swing relative to the first connecting part 221 about the axial direction x.

[0044] It should be noted that the circumferential direction y is Figure 1 The direction indicated by y in the middle.

[0045] In this embodiment, since multiple second connecting portions 222 are spaced apart along the circumferential direction y, multiple stirring needles 210 connected to the second connecting portions 222 are also spaced apart along the circumferential direction y, so that the multiple stirring needles 210 are arranged in a ring, thereby improving the stirring range and stirring effect of the stirring needles 210. Furthermore, since the stirring needles 210 are fixedly connected to the second connecting portions 222, when the connecting member 220 drives the stirring needles 210 to extend or retract into the first receiving cavity 110 along the axial direction x, or when the pushing member 230 pushes the stirring needles 210, the stirring needles 210 will not move relative to the connecting member 220. This reduces the likelihood of residual coffee powder adhering to the connector 220 on the stirring needle 210, thereby reducing contamination inside the coffee stirrer and making cleaning easier. Furthermore, since the second connector 222 can swing relative to the first connector 221 about the axial direction x, when the pusher 230 pushes the stirring needle 210, the second connector 222 can swing synchronously with the stirring needle 210, thereby reducing interference from the connector 220 to the swing of the stirring needle 210, improving the structural stability of the multiple stirring needles 210 in a dispersed state, and enabling the multiple stirring needles 210 to stir the coffee powder in a dispersed state.

[0046] Specifically, in this embodiment, the second connecting part 222 is made of soft rubber material. Soft rubber is a flexible material, which has the function of fixing the powder stirring needle 210 and the ability to swing relative to the first connecting part 221 around the axial direction x, so as to meet the requirements of fixing the powder stirring needle 210 and swinging synchronously with the powder stirring needle 210.

[0047] Specifically, in this embodiment, the powder stirring needle 210 and the second connecting part 222 are fixedly connected in a detachable manner. That is, when the powder stirring needle 210 is connected to the second connecting part 222, the powder stirring needle 210 will not move relative to the second connecting part 222, but the powder stirring needle 210 can be removed from the second connecting part 222 to facilitate cleaning or replacement of the powder stirring needle 210. Specific connection methods include, but are not limited to, interference fit, snap-fit ​​connection, snap-fit ​​connection, etc.

[0048] Continue to refer to Figure 5 As shown, the connector 220 also includes a plurality of third connecting parts 223, each of which is connected to the first connecting part 221 and is spaced apart along the circumferential direction y. A plurality of second connecting parts 222 are arranged around the plurality of third connecting parts 223. In some of the powder stirring needles 210, each powder stirring needle 210 is fixedly connected to the third connecting part 223. The third connecting part 223 can swing relative to the first connecting part 221 about the axial direction x.

[0049] In this embodiment, since multiple third connecting portions 223 are spaced apart along the circumferential direction y, multiple powder stirring needles 210 connected to the third connecting portions 223 are spaced apart along the circumferential direction y, so that the multiple powder stirring needles 210 are arranged in a ring, thereby improving the powder stirring range and powder stirring effect of the powder stirring needles 210. Furthermore, since multiple second connecting portions 222 are arranged around multiple third connecting portions 223, the multiple powder stirring needles 210 are arranged in a multi-layer ring, thereby further improving the powder stirring range and powder stirring effect of the powder stirring needles 210. Since the stirring needle 210 is fixedly connected to the third connecting part 223, when the connecting part 220 drives the stirring needle 210 to extend or retract into the first receiving cavity 110 along the axial direction x, or when the pushing part 230 pushes the stirring needle 210, the stirring needle 210 will not move relative to the connecting part 220. In this way, the possibility of residual coffee powder on the stirring needle 210 adhering to the connecting part 220 can be reduced, thereby reducing the contamination inside the coffee stirrer and reducing the difficulty of cleaning the coffee stirrer. Furthermore, since the third connecting part 223 can swing relative to the first connecting part 221 around the axial direction x, when the pushing part 230 pushes the stirring needle 210, the third connecting part 223 can swing synchronously with the stirring needle 210, thereby reducing the interference of the connecting part 220 on the swing of the stirring needle 210, improving the structural stability after the multiple stirring needles 210 are in a dispersed state, and enabling the multiple stirring needles 210 to stir the coffee powder in a dispersed state.

[0050] Specifically, in this embodiment, the third connecting part 223 is made of soft rubber material. Soft rubber is a flexible material, which has the function of fixing the powder stirring needle 210 and the ability to swing relative to the first connecting part 221 around the axial direction x, so as to meet the requirements of fixing the powder stirring needle 210 and swinging synchronously with the powder stirring needle 210.

[0051] Specifically, in this embodiment, the powder stirring needle 210 and the third connecting part 223 are fixedly connected in a detachable manner. That is, when the powder stirring needle 210 is connected to the third connecting part 223, the powder stirring needle 210 will not move relative to the third connecting part 223, but the powder stirring needle 210 can be removed from the third connecting part 223 to facilitate cleaning or replacement of the powder stirring needle 210. Specific connection methods include, but are not limited to, interference fit, snap-fit ​​connection, snap-fit ​​connection, etc.

[0052] Continue to refer to Figure 5As shown, the pusher 230 includes a first pusher 231 and a second pusher 232. The first pusher 231 is connected to the second pusher 232, and the first pusher 231 is disposed around the second pusher 232 along the circumferential direction y. The pusher surface includes a first pusher surface 2311 and a second pusher surface 2321. The first pusher surface 2311 is disposed on the side of the first pusher 231 along the axial direction x near the connector 220, and the second pusher surface 2321 is disposed on the side of the second pusher 232 along the axial direction x near the connector 220. Each powder stirring needle 210 protrudes at least partially from the first connector 221 along the axial direction x toward the pusher 230. The first pusher surface 2311 abuts against each powder stirring needle 210 connected to the second connector 222, and the second pusher surface 2321 abuts against each powder stirring needle 210 connected to the third connector 223.

[0053] In this embodiment, each powder stirring needle 210 connected to the second connecting part 222 can be pushed by the first pushing surface 2311, so that each powder stirring needle 210 connected to the second connecting part 222 can swing around the axial direction x. At the same time, each powder stirring needle 210 connected to the third connecting part 223 can be pushed by the second pushing surface 2321, so that each powder stirring needle 210 connected to the third connecting part 223 can swing around the axial direction x. In this way, each powder stirring needle 210 can be pushed so that multiple powder stirring needles 210 can be dispersed away from each other.

[0054] Reference Figure 6 as well as Figure 8 As shown, the coffee mixer also includes an inner shell 300, which is disposed within a first receiving cavity 110 and rotates relative to the outer shell 100 about the axial direction x. The cavity wall of the first receiving cavity 110 is provided with a first spiral groove 130 extending about the axial direction x. The inner shell 300 is provided with a second receiving cavity 310 and a first sliding groove 320. The first sliding groove 320 extends about the axial direction x and communicates with the second receiving cavity 310 and the first spiral groove 130. The coffee mixer also has a radial direction z. The mixing assembly 200 also includes a slider 240. The slider 240 and the connector 220 are both disposed within the second receiving cavity 310. The slider 240 is connected to the surface of the connector 220 and at least partially protrudes from the connector 220 about the radial direction z. The slider 240 is at least partially inserted into the first sliding groove 320 and the first spiral groove 130.

[0055] It should be noted that the radial direction z is Figure 1 The direction indicated by z in the middle.

[0056] In this embodiment, when the inner shell 300 rotates relative to the outer shell 100 about the axial direction x, the inner shell 300 can drive the sliding member 240 in the second receiving cavity 310 to rotate relative to the outer shell 100 about the axial direction x. Since the sliding member 240 is at least partially inserted into the first sliding groove 320 and the first spiral groove 130, when the sliding member 240 rotates relative to the outer shell 100 about the axial direction x, the sliding member 240 can rotate along the spiral direction of the first spiral groove 130, so that the sliding member 240 can move in the first sliding groove 320 about the axial direction x. Thus, the sliding member 240 drives the connecting member 220 to move in the axial direction x, thereby realizing the movement of the connecting member 220 relative to the outer shell 100 about the axial direction x, and further realizing the extension and retraction of the stirring needle 210 relative to the outer shell 100 about the axial direction x.

[0057] Reference Figure 5 As shown, the mixing assembly 200 also includes a connecting sleeve 250, which is disposed in the second receiving cavity 310 and sleeved over the connector 220 and the sliding member 240. The sliding member 240 protrudes at least partially from the connecting sleeve 250 to improve the connection stability between the connector 220 and the sliding member 240.

[0058] Reference Figure 7 as well as Figure 8 As shown, the first receiving cavity 110 is further provided with a second spiral groove 140 extending around the axial direction x on the cavity wall. The second spiral groove 140 is spaced apart from and parallel to the first spiral groove 130. The inner shell 300 is further provided with a second sliding groove 330. The second sliding groove 330 is spaced apart from the first sliding groove 320 along the circumferential direction y, and the second sliding groove 330 extends along the axial direction x. The second sliding groove 330 communicates with the second receiving cavity 310 and the second spiral groove 140. The pusher 230 is disposed in the second receiving cavity 310 and at least partially passes through the second sliding groove 330 and the second spiral groove 140.

[0059] In this embodiment, when the inner shell 300 rotates relative to the outer shell 100 about the axial direction x, the inner shell 300 can drive the pusher 230 in the second receiving cavity 310 to rotate relative to the outer shell 100 about the axial direction x. Since the pusher 230 is at least partially inserted into the second sliding groove 330 and the second spiral groove 140, when the pusher 230 rotates relative to the outer shell 100 about the axial direction x, the pusher 230 can rotate along the spiral direction of the second spiral groove 140, so that the pusher 230 can move in the second sliding groove 330 about the axial direction x, thereby realizing the movement of the pusher 230 relative to the outer shell 100 about the axial direction x. Since the second spiral groove 140 is spaced apart from the first spiral groove 130 and arranged in parallel, when the inner shell 300 rotates relative to the outer shell 100 about the axial direction x, it can drive the pusher 230 and the connecting member 220 to move synchronously, so that multiple powder stirring needles 210 can extend out of the first receiving cavity 110 in a parallel state.

[0060] Reference Figure 8 As shown, the inner shell 300 is also provided with a third sliding groove 340, which is connected to the first sliding groove 320. The third sliding groove 340 is located at one end of the first sliding groove 320 along the axial direction x, close to the first opening 120, and extends along the circumferential direction y.

[0061] In this embodiment, when the slider 240 moves to the end of the first sliding groove 320 near the first opening 120 along the axial direction x, the slider 240 will abut against the groove wall of the first sliding groove 320 near the first opening 120 along the axial direction x. Since the third sliding groove 340 is provided at the end of the first sliding groove 320 near the first opening 120 along the axial direction x and extends along the circumferential direction y, the slider 240 can be avoided by the third sliding groove 340. At this time, if the inner shell 300 continues to rotate relative to the outer shell 100 around the axial direction x, the slider 240 can slide into the third sliding groove 340, so that the slider 240 can move along the circumferential direction y in the third sliding groove 340, thereby avoiding the inner shell 300 from continuing to rotate relative to the outer shell 100 around the axial direction x. Thus, the pusher 230 can continue to move along the axial direction x under the drive of the inner shell 300. This allows the pushing member 230 to move a greater distance along the axial direction x than the connecting member 220, thereby enabling the pushing member 230 to push the stirring needle 210. Furthermore, when the stirring needle 210 needs to be retracted into the first receiving cavity 110, the inner shell 300 rotates in the opposite direction relative to the outer shell 100 around the axial direction x. At this time, the sliding member 240 located in the third sliding groove 340 will first move along the circumferential direction y in the third sliding groove 340, and the pushing member 230 will move along the axial direction x in the second sliding groove 330 in a direction away from the first opening 120. In this way, the pushing member 230 can release the pushing of the stirring needle 210, so that multiple stirring needles 210 can first return to a parallel state, and then retract into the first receiving cavity 110 in a parallel state, thereby avoiding interference between the stirring needle 210 and the outer shell 100 during the process of retracting into the first receiving cavity 110.

[0062] Continue to refer to Figure 8 As shown, the inner shell 300 is also provided with a limiting groove 350, which is connected to the second sliding groove 330. The limiting groove 350 is located at one end of the second sliding groove 330 along the axial direction x near the first opening 120 and extends along the circumferential direction y. Thus, when the pushing member 230 moves to the end of the second sliding groove 330 along the axial direction x near the first opening 120, if the inner shell 300 continues to rotate relative to the outer shell 100 around the axial direction x, the pushing member 230 will slide into the limiting groove 350. The limiting groove 350 will limit and position the movement of the pushing member 230, thereby confirming that the pushing member 230 has moved to the preset position at the end of the second sliding groove 330 along the axial direction x near the first opening 120. At the same time, it improves the structural stability of the pushing member 230 at this position and improves the pushing stability of the pushing member 230 on the multiple stirring needles 210.

[0063] Reference Figure 6As shown in Figure 7, the angles between the first spiral groove 130 and the second spiral groove 140 and the axial direction x are both α, satisfying: 30°≤α≤60°.

[0064] Specifically, in this embodiment, α can be 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, etc.

[0065] In this embodiment, when the stirring needle 210 extends out of the first receiving cavity 110 at any length, the sliding member 240 slides to any position within the first spiral groove 130, and the pushing member 230 slides to any position within the second spiral groove 140. If α < 30°, the sliding member 240 will not be able to self-lock within the first spiral groove 130, and the pushing member 230 will not be able to self-lock within the second spiral groove 140. This will reduce the structural stability of the stirring needle 210 when stirring powder at any length. If α > 60°, the first spiral groove 130 and the second spiral groove 140 will become axially incompatible with each other. If the angle between directions x is too large, it will cause the sliding stroke of the slider 240 in the first spiral groove 130 to be too long, and at the same time, it will cause the sliding stroke of the pusher 230 in the second spiral groove 140 to be too long. This will further cause the retraction speed of the powder stirring needle 210 relative to the outer shell 100 to be too slow, and the state switching speed of the powder stirring needle 210 to be too slow, which will reduce the user's experience. Therefore, when 30°≤α≤60°, the self-locking requirements of the slider 240 and the pusher 230 can be met, and the retraction speed of the powder stirring needle 210 can be increased, thereby improving the user's experience.

[0066] Reference Figure 1 as well as Figure 2 As shown, the coffee mixer also includes a cap 400, and an inner shell 300 at least partially protrudes from the outer shell 100 away from the first opening 120 in the axial direction x and is connected to the cap 400, which rotates relative to the outer shell 100 about the axial direction x.

[0067] In this embodiment, since the inner shell 300 is connected to the cap 400 and the cap 400 rotates relative to the outer shell 100 about the axial direction x, the inner shell 300 can be rotated relative to the outer shell 100 about the axial direction x by screwing the cap 400, so as to realize the extension and retraction of the powder stirring needle 210.

[0068] Specifically, refer to Figure 2 as well as Figure 8As shown, in this embodiment, the inner shell 300 has a second opening 360 at the end away from the first opening 120 along the axial direction x. The ends of the first sliding groove 320 and the second sliding groove 330 near the second opening 360 are both connected to the second opening 360. This allows at least a portion of the sliding member 240 to pass through the second opening 360 into the first sliding groove 320, and at least a portion of the pushing member 230 to pass through the second opening 360 into the second sliding groove 330, so that the powder mixing assembly 200 can be placed in the second sliding groove 120 through the second opening 360. The second opening 360 facilitates the removal of the powder stirring assembly 200 from the second receiving cavity 310, allowing for cleaning and replacement of the powder stirring needle 210. Furthermore, the cap 400 is threadedly connected to the inner shell 300 protruding from the outer shell 100, and the second opening 360 is sealed, enabling the cap 400 to drive the inner shell 300 to rotate relative to the outer shell 100 in the circumferential direction y. Simultaneously, it allows for the disassembly and connection of the cap 400 and the inner shell 300, further facilitating the loading and unloading of the powder stirring assembly 200 through the second opening 360.

[0069] Reference Figure 1 As shown, in the axial direction x, the cross-sectional area of ​​the cap 400 perpendicular to the axial direction x gradually decreases in the direction away from the first opening 120.

[0070] In this embodiment, in the axial direction x, since the cross-sectional area of ​​the cap 400 perpendicular to the axial direction x gradually decreases in the direction away from the first opening 120, the end of the cap 400 away from the first opening 120 can form a conical structure. The tip of the conical structure can effectively pierce the coffee powder to form a regular concave area on the surface of the powder layer. This concave area can serve as a positioning reference when pouring water, thereby ensuring the accuracy and consistency of the water pouring process and improving the coffee brewing effect.

[0071] Reference Figures 2 to 4As shown, in this embodiment, since the second opening is connected to the first sliding groove 320 and the second sliding groove 330, the end of the inner shell 300 near the second opening 360 along the axial direction x is divided into multiple parts by the first sliding groove 320 and the second sliding groove 330. Thus, the structural stability of the end of the inner shell 300 near the second opening 360 along the axial direction x is relatively poor. The coffee stirrer also includes a limiting member 500, which is connected to the end of the inner shell 300 near the second opening 360 along the axial direction x. Thus, the structural stability of the end of the inner shell 300 near the second opening 360 along the axial direction x can be improved by the limiting member 500. Furthermore, when the pushing member 230 moves away from the first opening 120 along the axial direction x, the pushing member 230 can abut against the limiting member 500, so that the limiting member 500 can limit and position the movement of the pushing member 230, thereby confirming that the stirring needle 210 retracts to the preset position in the first receiving cavity 110.

[0072] Continue to refer to Figures 2 to 4 As shown, in this embodiment, the cap 400 is threadedly connected to the inner shell 300. The coffee mixer also includes an elastic tensioning member 600, which is disposed at the second opening 360 and between the cap 400 and the limiting member 500. When the cap 400 and the inner shell 300 are tightened, the elastic tensioning member 600 is squeezed between the cap 400 and the limiting member 500, thereby compressing the elastic tensioning member 600 to form tension, thereby increasing the torque of the threaded connection between the cap 400 and the inner shell 300, so that the cap 400 will not be easily twisted and reducing the possibility of being accidentally loosened.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A coffee grinder, characterized in that, Having an axial direction, the coffee mixer includes: The outer casing has a first receiving cavity and a first opening communicating with the first receiving cavity, the first opening being located at one end of the first receiving cavity along the axial direction; A powder stirring assembly is disposed within the first receiving cavity. The powder stirring assembly includes multiple powder stirring needles, a connector, and a pushing member. The pushing member is disposed at the end of the connector away from the first opening along the axial direction. The pushing member has a pushing surface on the side of the connector along the axial direction. The pushing surface is angled to the axial direction, and the distance between the pushing surface and the central axis of the first receiving cavity gradually increases along the axial direction towards the first opening. The multiple powder stirring needles are spaced apart and connected in parallel to the connector. The connector moves relative to the housing along the axial direction so that the powder-stirring needle extends or retracts into the first receiving cavity through the first opening. The pusher moves synchronously with the connector, and the travel of the pusher is greater than that of the connector so that one end of each powder-stirring needle abuts against the push surface.

2. The coffee grinder according to claim 1, characterized in that, The coffee stirrer also has a circumferential direction. The connector includes a first connecting part and a plurality of second connecting parts. The plurality of second connecting parts are connected to the first connecting part and are spaced apart along the circumferential direction. In some of the stirring needles, each stirring needle is fixedly connected to a second connecting part. The second connecting part is able to swing relative to the first connecting part about the axial direction.

3. The coffee grinder according to claim 2, characterized in that, The connector further includes a plurality of third connecting parts, each of which is connected to the first connecting part and is spaced apart along the circumferential direction. A plurality of second connecting parts are arranged around the plurality of third connecting parts. In some of the powder stirring needles, each powder stirring needle is fixedly connected to the third connecting part, and the third connecting part is able to swing relative to the first connecting part about the axial direction.

4. The coffee grinder according to claim 3, characterized in that, The pushing member includes a first pushing part and a second pushing part, the first pushing part being connected to the second pushing part, and the first pushing part being disposed around the second pushing part along the circumferential direction. The pushing surface includes a first pushing surface and a second pushing surface, the first pushing surface being disposed on the side of the first pushing part near the connecting member along the axial direction, and the second pushing surface being disposed on the side of the second pushing part near the connecting member along the axial direction. Each powder stirring needle protrudes at least partially from the first connecting part along the axial direction toward the direction near the pushing member, and the first pushing surface abuts against each powder stirring needle connected to the second connecting part, and the second pushing surface abuts against each powder stirring needle connected to the third connecting part.

5. The coffee grinder according to claim 1, characterized in that, The coffee stirrer further includes an inner shell disposed within the first receiving cavity and rotating relative to the outer shell about the axial direction. The cavity wall of the first receiving cavity is provided with a first spiral groove extending about the axial direction. The inner shell is provided with a second receiving cavity and a first sliding groove. The first sliding groove extends about the axial direction and communicates with the second receiving cavity and the first spiral groove. The coffee stirrer also has a radial direction. The stirring assembly further includes a slider. The slider and the connecting member are both disposed within the second receiving cavity. The slider is connected to the surface of the connecting member and at least partially protrudes from the connecting member about the radial direction. The slider at least partially passes through the first sliding groove and the first spiral groove.

6. The coffee grinder according to claim 5, characterized in that, The coffee mixer also has a circumferential direction. The cavity wall of the first receiving cavity is provided with a second spiral groove extending around the axial direction. The second spiral groove is spaced apart from and parallel to the first spiral groove. The inner shell is also provided with a second sliding groove. The second sliding groove is spaced apart from the first sliding groove along the circumferential direction, and the second sliding groove extends along the axial direction. The second sliding groove communicates with the second receiving cavity and the second spiral groove. The pusher is disposed in the second receiving cavity and at least partially passes through the second sliding groove and the second spiral groove.

7. The coffee grinder according to claim 6, characterized in that, The inner shell is also provided with a third sliding groove, which communicates with the first sliding groove. The third sliding groove is located at one end of the first sliding groove near the first opening along the axial direction and extends along the circumferential direction.

8. The coffee grinder according to claim 6, characterized in that, The angles between the first spiral groove and the second spiral groove and the axial direction are both α, satisfying: 30°≤α≤60°.

9. The coffee grinder according to claim 5, characterized in that, The coffee stirrer also includes a cap, the inner shell at least partially protruding from the outer shell at an end away from the first opening along the axial direction and connected to the cap, the cap rotating relative to the outer shell about the axial direction.

10. The coffee grinder according to claim 9, characterized in that, In the axial direction, the cross-sectional area of ​​the cap perpendicular to the axial direction gradually decreases in the direction away from the first opening.

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