Needle-type coffee powder dispenser

Abstract

This utility model discloses a needle-type coffee powder dispenser, mainly relating to the field of coffee powder dispensing technology. It includes an adjustment knob, a rotating sleeve, and a base arranged sequentially from top to bottom. The bottom of the base has a cavity, within which a swing arm turntable is located. A main shaft is located at the top of the swing arm turntable, and its top end is threadedly connected to the adjustment knob. A spring is fitted onto the main shaft. Several rotating connectors are arranged in a circular array on the bottom surface of the swing arm turntable. Each rotating connector has a swing arm, which is rotatably connected to the swing arm turntable via the rotating connector. A guide rod is located at one end of the top of each swing arm. A non-circular irregular-shaped guide groove adapted to the guide rod is located on the top surface of the cavity. Several powder needles are located at the bottom of each swing arm. This utility model can convert rotary input into a customized planar trajectory (such as a petal shape or a twisted shape), offering good trajectory controllability, mechanical simplification, and high stability.

Description

Technical Field

[0001] This utility model relates to the field of coffee powder distribution technology, specifically a needle-type coffee powder distributor. Background Technology

[0002] Currently, the two main types of needle-type coffee powder dispensers commonly found on the market are as follows:

[0003] One type is a coffee dispenser with a coaxial needle plate and rotating handle, where the needle plate and rotating handle are fixed together. In use, the needle plate and handle rotate coaxially, causing multiple needles to move in a circular motion around the fixed axis. This circular motion of the needles stirs the coffee grounds in the coffee cup. However, the movement trajectory of the needles in this type of dispenser is multiple concentric circles. Furthermore, the faster the rotation speed, the greater the centrifugal force, leading to uneven coffee grounds. The coffee grounds in the areas the needles pass through are pushed to the sides, creating multiple concentric cylinders of coarse and fine coffee grounds. During the subsequent tamping process, this layering of coarse and fine coffee grounds prevents even tamping, negatively impacting coffee extraction and the overall taste.

[0004] Another type is the planetary gear-type needle plate dispenser. This type of dispenser has multiple gear-shaped needle plates, which, together with the internal gear ring of the mounting base, form a planetary gear mechanism. The coffee needles move in a spiral motion within the coffee cup. This type of dispenser's needle motion is superior to that of the coaxial dispenser mentioned above, preventing the formation of stratification between coarse and fine coffee grounds. However, this type of dispenser has a smaller needle plate size and a smaller radius of rotation, which prevents the coffee grounds from being evenly distributed over a large distance within the coffee cup; it only achieves a small-scale even distribution. Furthermore, due to the larger number of gears, the cost is higher, and the gears are prone to jamming and difficult to clean. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide a needle-type coffee powder dispenser with good trajectory controllability, mechanical simplification, and high stability.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A needle-type coffee powder dispenser includes, from top to bottom, an adjustment knob, a rotating sleeve, and a base. The bottom of the base has a cavity containing a swing arm turntable. A main shaft is located at the top of the swing arm turntable. The main shaft passes through the base and the rotating sleeve sequentially from bottom to top. The main shaft is rotatably connected to the base and drively connected to the rotating sleeve. The top end of the main shaft is threaded to the adjustment knob, and the bottom end of the adjustment knob abuts against the rotating sleeve. The relative rotation between the adjustment knob and the main shaft adjusts the relationship between the swing arm turntable and the adjustment knob. The distance between them is such that a spring is sleeved on the main shaft, which provides a thrust to the swing arm turntable away from the adjustment knob. Several rotating connectors are arranged in a circular array on the bottom surface of the swing arm turntable. Each rotating connector is equipped with a swing arm, which is rotatably connected to the swing arm turntable through the rotating connector. Each swing arm has a guide rod at one end of its top. The top surface of the cavity is provided with a non-circular irregular guide groove adapted to the guide rod. The top end of the guide rod is inserted into the non-circular irregular guide groove. Several powder needles are provided at the bottom of each swing arm.

[0008] Preferably, the main shaft is a milling flat shaft, and the rotating sleeve is provided with a through hole adapted to the milling flat shaft.

[0009] Preferably, the base is provided with a central hole, and a bearing adapted to the main shaft is provided in the central hole. One end of the spring abuts against the bearing, and the other end abuts against the swing arm turntable.

[0010] Preferably, the bottom center of the adjustment knob is provided with a threaded hole, and the top of the spindle is provided with an external thread that is compatible with the threaded hole.

[0011] Preferably, the bottom of the adjustment knob is provided with a plurality of ball screws in an annular array, and the rotating sleeve is provided with a plurality of grooves in an annular array that are adapted to the ball screws.

[0012] Preferably, the non-circular irregular guide groove includes several guide grooves, which are connected end to end to form a non-circular ring.

[0013] Preferably, the rotating connector includes a fixing screw and a swing arm bearing sleeved on the fixing screw, and the bottom surface of the swing arm is provided with a countersunk mounting hole adapted to the swing arm bearing.

[0014] Preferably, the number of swing arms is two.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention, through a decoupling structure of non-circular irregular guide groove, guide rod, and swing arm turntable, can convert rotary input into customized planar trajectories (such as petal-shaped or twisted shapes), achieving:

[0017] Track controllability: The irregularly shaped guide rail forces the guide rod to move along a preset path, allowing the powder needle to accurately cover a larger area of ​​the powder bowl;

[0018] Mechanical simplification: Complex motion can be generated with a single rotary drive, eliminating the need for multiple motors or gear sets;

[0019] High stability: The swing arm and turntable restrict axial translation to prevent accidental compaction caused by the downward pressure of the powder needle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the adjustment knob;

[0023] Figure 4 This is a three-dimensional structural diagram of the rotating sleeve;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the base;

[0025] Figure 6 This is one of the three-dimensional structural diagrams of the swing arm turntable;

[0026] Figure 7 This is the second schematic diagram of the three-dimensional structure of the swing arm turntable;

[0027] The following are the labels in the attached diagram: 1. Adjustment knob; 11. Threaded hole; 12. Ball screw; 2. Rotary sleeve; 21. Through hole; 22. Groove; 23. Support plate; 3. Base; 31. Cavity; 32. Non-circular irregular guide groove; 33. Center hole; 34. Bearing; 4. Swing arm turntable; 41. Main shaft; 42. Spring; 43. Rotating connector; 44. Swing arm; 45. Guide rod; 46. Powder needle. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0029] Example: As attached Figure 1-7As shown, this utility model describes a needle-type coffee powder dispenser, comprising an adjustment knob 1, a rotating sleeve 2, and a base 3 arranged sequentially from top to bottom. The bottom of the base 3 has a cavity 31, and a swing arm turntable 4 is provided inside the cavity 31. The top of the swing arm turntable 4 has a main shaft 41, and the main shaft 41 and the swing arm turntable 4 can be integrated. The main shaft 41 passes through the base 3 and the rotating sleeve 2 sequentially from bottom to top. The main shaft 41 is rotatably connected to the base 3, and the main shaft 41 is drively connected to the rotating sleeve 2. Rotating the rotating sleeve 2 can drive the main shaft 41 to rotate. The top end of the main shaft 41 is threadedly connected to the adjustment knob 1, and the bottom end of the adjustment knob 1 abuts against the rotating sleeve 2. A support plate 23 is provided inside the rotating sleeve 2, and the support plate 23 and the rotating sleeve 2 are integrated. The distance between the swing arm turntable 4 and the adjustment knob 1 is adjusted by the relative rotation between the adjustment knob 1 and the main shaft 41.

[0030] A spring 42 is fitted on the main shaft 41, and the spring 42 provides a thrust to the swing arm turntable 4 to move away from the adjustment knob 1.

[0031] Preferably, the main shaft 41 is a milled flat shaft, which can be formed by milling flat shaft on both sides. The rotating sleeve 2 is provided with a through hole 21 adapted to the milled flat shaft. The cross-sectional shape of the through hole 21 is the same as the cross-sectional shape of the milled flat shaft, and the milled flat shaft can slide up and down along the through hole 21, which facilitates the connection between the main shaft 41 and the rotating sleeve 2, and ensures that the distance between the swing arm turntable 4 and the adjustment knob 1 is adjustable.

[0032] Preferably, the base 3 is provided with a central hole 33, and a bearing 34 adapted to the main shaft 41 is provided in the central hole 33. The central hole 33 is a countersunk hole adapted to the bearing 34. The bearing 34 is embedded in the countersunk hole. One end of the spring 42 abuts against the bearing 34 and the other end abuts against the swing arm turntable 4. The main shaft 41 can slide up and down in the inner ring of the bearing 34.

[0033] The spring 42 is located between the swing arm turntable 4 and the bearing 34, ensuring that the relative position of the adjusting knob 1, the rotating sleeve 2, and the bearing 34 remains unchanged when the adjusting knob 1 is rotated to adjust the height, so that only the powder needle 46 moves when the adjusting knob 1 is rotated.

[0034] Preferably, the bottom center of the adjustment knob 1 is provided with a threaded hole 11, and the top of the main shaft 41 is provided with an external thread that is compatible with the threaded hole 11. The distance between the swing arm turntable 4 and the adjustment knob 1 can be adjusted by adjusting the depth of the main shaft 41 screwed into the threaded hole 11.

[0035] The bottom surface of the swing arm turntable 4 is provided with a plurality of rotating connectors 43 arranged in a circular array. In this embodiment, two swing arms 44 are used as an example. Each of the rotating connectors 43 is provided with a swing arm 44, and the swing arm 44 is rotatably connected to the swing arm turntable 4 through the rotating connector 43. One end of the top of each swing arm 44 is provided with a guide rod 45. To ensure that a sufficient number of powder needles 46 can be installed, the swing arm 44 adopts an attached... Figure 7 The curved component shown.

[0036] The adjustment knob 1 can be rotated to change its position relative to the swing arm turntable 4, thereby changing its position relative to the swing arm 44, and thus adjusting the up and down position of the powder needle 46.

[0037] The top surface inside the cavity 31 is provided with a non-circular irregular guide groove 32 adapted to the guide rod 45. The top end of the guide rod 45 is inserted into the non-circular irregular guide groove 32. Each swing arm 44 has several powder needles 46 at its bottom. Through the cooperation of the guide rod 45 and the non-circular irregular guide groove 32, the movement trajectory of the end of the swing arm 44 is restricted.

[0038] Preferably, the bottom of the adjustment knob 1 is provided with a plurality of ball screws 12 in a circular array, and the rotating sleeve 2 is provided with a plurality of grooves 22 in a circular array that correspond to the ball screws 12. During the adjustment process, the ball screws 12 bounce between the grooves 22 and the plane and strike the support plate 23 of the rotating sleeve 2, which can produce an adjustment feedback sound.

[0039] Preferably, the non-circular irregular guide groove 32 includes several guide grooves, which are connected end to end to form a non-circular ring.

[0040] Preferably, the rotating connector 43 includes a fixing screw and a swing arm bearing sleeved on the fixing screw, and the bottom surface of the swing arm 44 is provided with a countersunk mounting hole adapted to the swing arm bearing.

[0041] In use, firstly, rotate the adjustment knob 1 to adjust the position of the powder needle 46 as needed; then rotate the rotating sleeve 2, which drives the swing arm turntable 4 to rotate via the main shaft 41. The swing arm 44 is pulled to rotate around the axis of the main shaft via the rotating connector 43. The other end of the swing arm 44 rotates non-circularly in the non-circular guide groove 32 of the base 3 via the guide rod 45. This allows the swing arm 44 to swing during its rotation around the main shaft 41, so that the swing arm 44, which rotates around the main shaft 41 and swings in real time, drives the powder needle 46 on it to rotate and swing around the main shaft 41. This ensures that the powder needle moves in a non-concentric circle while traversing more trajectories.

Claims

1. A needle coffee grinder characterized in that: The device includes, from top to bottom, an adjusting knob (1), a rotating sleeve (2), and a base (3). The bottom of the base (3) has a cavity (31), and a swing arm turntable (4) is located inside the cavity (31). The top of the swing arm turntable (4) has a main shaft (41). The main shaft (41) passes through the base (3) and the rotating sleeve (2) from bottom to top. The main shaft (41) is rotatably connected to the base (3) and is drively connected to the rotating sleeve (2). The top of the main shaft (41) is threadedly connected to the adjusting knob (1), and the bottom of the adjusting knob (1) abuts against the rotating sleeve (2). The distance between the swing arm turntable (4) and the adjusting knob (1) is adjusted by the relative rotation between the adjusting knob (1) and the main shaft (41). A spring (42) is fitted on the main shaft (41), and the spring (42) provides a thrust to the swing arm turntable (4) away from the adjustment knob (1). Several rotating connectors (43) are arranged in a ring on the bottom surface of the swing arm turntable (4). A swing arm (44) is provided on each of the rotating connectors (43). The swing arm (44) is rotatably connected to the swing arm turntable (4) through the rotating connectors (43). A guide rod (45) is provided at one end of the top of each swing arm (44). A non-circular irregular guide groove (32) adapted to the guide rod (45) is provided on the top surface of the cavity (31). The top end of the guide rod (45) is inserted into the non-circular irregular guide groove (32). Several powder needles (46) are provided at the bottom of each swing arm (44).

2. The needle coffee grinder according to claim 1, characterized in that: The main shaft (41) is a milling shaft, and the rotating sleeve (2) is provided with a through hole (21) adapted to the milling shaft.

3. The needle coffee grinder according to claim 1, characterized in that: The base (3) is provided with a central hole (33), and a bearing (34) adapted to the main shaft (41) is provided in the central hole (33). One end of the spring (42) abuts against the bearing (34), and the other end abuts against the swing arm turntable (4).

4. The needle coffee grinder according to claim 1, characterized in that: The adjustment knob (1) has a threaded hole (11) at the center of its bottom, and the top of the spindle (41) has an external thread that is compatible with the threaded hole (11).

5. The needle coffee grinder according to claim 1, characterized in that: The bottom of the adjustment knob (1) is provided with a number of ball screws (12) in an annular array, and the rotating sleeve (2) is provided with a number of grooves (22) that are adapted to the ball screws (12) in an annular array.

6. The needle coffee grinder according to claim 1, characterized in that: The non-circular irregular guide groove (32) includes several guide grooves, which are connected end to end to form a non-circular ring.

7. The needle coffee grinder according to claim 1, characterized in that: The rotating connector (43) includes a fixing screw and a swing arm bearing sleeved on the fixing screw. The bottom surface of the swing arm (44) is provided with a countersunk mounting hole adapted to the swing arm bearing.

8. The needle coffee grinder according to claim 1, characterized in that: The number of swing arms (44) is two.

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