Powder sweeping mechanism and coffee machine

Abstract

The utility model provides a powder sweeping mechanism and a coffee maker, and the powder sweeping mechanism comprises a powder scraping piece which is arranged above a brewing cavity and is used for sweeping powder cakes; the connecting rod driving structure is arranged on the brewing unit and is used for driving the powder scraping sheet to linearly move; and the triggering structure is arranged in the coffee machine and is used for shifting the connecting rod driving structure when the connecting rod driving structure passes through the triggering structure. On one hand, the powder sweeping mechanism is driven by the brewing unit to work, and an extra independent driving motor for driving the powder sweeping mechanism to work is not needed; on the other hand, due to the fact that the powder scraping piece moves linearly, compared with a rotary powder scraping structure, occupied space in the coffee machine is reduced, and the design size of the coffee machine can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment for brewing coffee, and in particular to a powder sweeping mechanism and a coffee machine. Background Art

[0002] A fully automatic coffee machine is an appliance that can at least realize the entire process of brewing coffee, including pressing powder, brewing, and removing residues. During use, the brewing unit of the coffee machine moves to the coffee powder adding position to add coffee powder to the brewing chamber in the brewing unit, and then moves to the extraction position to complete coffee extraction. After coffee extraction is completed, the coffee powder cake needs to be pushed out of the brewing chamber and swept away, and finally returned to the initial position.

[0003] However, in the prior art, coffee powder cakes are generally swept away by a driving motor that drives a rotating powder scraping structure. The driving motor requires additional space inside the coffee machine for fixing, and the rotating powder scraping structure also requires space required for its rotation inside the coffee machine, so that the coffee machine requires a larger volume to complete the automatic powder sweeping step. Utility Model Content

[0004] The present application provides a powder sweeping mechanism and a coffee machine. The powder sweeping mechanism occupies a small space in the coffee machine, which is conducive to reducing the volume of the coffee machine.

[0005] In the first aspect, the present application provides a powder sweeping mechanism that adopts the following technical solution:

[0006] A powder sweeping mechanism, comprising:

[0007] A powder scraper is provided above the brewing chamber to sweep away the powder cake;

[0008] The connecting rod driving structure is arranged on the brewing unit and is used to drive the powder scraping blade to move linearly;

[0009] The trigger structure is arranged inside the coffee machine and is used to toggle the connecting rod driving structure when the connecting rod driving structure passes through the trigger structure.

[0010] In a preferred embodiment, it also includes a powder sweeping bracket, which is detachably and fixedly connected to the brewing unit, and the powder scraping blade and the connecting rod driving structure are both arranged on the powder sweeping bracket.

[0011] In a preferred embodiment, the powder scraping bracket is provided with a powder scraping groove parallel to the top of the brewing chamber, and the powder scraping sheet is slidably connected to the powder scraping groove.

[0012] In a preferred embodiment, the connecting rod driving structure includes a connecting rod structure, a rotating shaft and a connecting rod driving member. One end of the connecting rod structure is rotatably connected to the powder scraping blade, and the other end is fixedly connected to the rotating shaft. The connecting rod driving member is fixedly connected to the rotating shaft, and the rotating shaft is rotatably arranged in the powder sweeping bracket. When the connecting rod driving structure moves past the trigger structure, the trigger structure drives the connecting rod driving structure to rotate through the connecting rod driving member.

[0013] In a preferred embodiment, the powder sweeping bracket is provided with an end cover, the end cover is provided with a limit window, and the connecting rod driving member passes through the limit window and extends to the outside of the powder sweeping bracket.

[0014] In a preferred embodiment, the powder sweeping mechanism further includes a first return torsion spring, and the rotating shaft is connected to the powder sweeping bracket via the first return torsion spring.

[0015] In a preferred embodiment, the scraper sheet includes an integrally arranged scraper plate, a connecting column passing through the scraper groove, and a sliding limit plate, wherein the longitudinal portion of the sliding limit plate abuts against the side of the scraper groove facing the brewing chamber, and the transverse portion of the sliding limit plate is located above the scraper groove.

[0016] In a preferred embodiment, the powder scraping groove extends upward in an arc shape toward the end of the trigger structure.

[0017] In a preferred embodiment, the trigger structure includes a powder knife lever and a second reset torsion spring, and the powder knife lever is connected to the coffee machine via the second reset torsion spring.

[0018] In a second aspect, the present application further discloses a coffee machine, wherein the above-mentioned powder sweeping mechanism is provided in the coffee machine.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. After the coffee is extracted, the brewing unit moves downward and pushes the powder cake to the top of the brewing chamber. When the brewing unit passes the trigger structure, the brewing unit and the trigger structure generate relative motion, so that the trigger structure toggles the connecting rod driving structure to drive the powder scraper to scrape the powder cake above the brewing chamber. On the one hand, the powder sweeping mechanism works under the drive of the brewing unit, and there is no need to configure a separate drive motor to drive the powder sweeping mechanism; on the other hand, since the powder scraper moves in a straight line, it reduces the space occupied by the coffee machine compared to the rotary powder scraper structure, which is conducive to reducing the design volume of the coffee machine.

[0021] 2. The setting of the powder scraping groove cooperates with the sliding limit plate and the connecting column, which not only realizes the linear movement of the powder scraping piece, but also the sliding limit plate and the connecting column can flexibly engage the powder scraping groove, thereby ensuring the structural stability of the powder scraping piece during the powder scraping process.

[0022] 3. The second return spring and the powder knife lever are set. When the brewing unit moves downward and passes through the trigger structure, the powder knife lever does not rotate, thereby toggling the connecting rod driving member to complete the powder scraping; when the brewing unit moves upward and passes through the trigger structure, the connecting rod driving member toggles the powder knife lever to rotate, so that the powder knife lever makes way for the brewing unit. The driving structure of the connecting rod driving structure is simple and has stable functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the coffee machine described in the embodiment of the present application.

[0024] Figure 2 It is a structural schematic diagram of the powder sweeping mechanism described in the embodiment of the present application.

[0025] Figure 3 It is an exploded view of the powder sweeping mechanism described in the embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the connecting rod driving structure and the scraper blade structure described in the embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the structural coordination between the powder knife lever and the connecting rod driving member described in an embodiment of the present application.

[0028] Figure 6 It is a schematic diagram of the structure of the connecting column in the end groove according to the embodiment of the present application.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. working chamber; 11. powder receiving barrel; 2. brewing unit; 3. powder sweeping bracket; 31. powder scraping groove; 311. end groove; 32. end cover; 321. limit window; 4. powder scraping sheet; 41. powder scraping plate; 42. connecting column; 43. sliding limit plate; 5. connecting rod driving structure; 51. first connecting rod; 52. second connecting rod; 53. rotating shaft; 54. connecting rod driving member; 55. first reset torsion spring; 6. powder knife lever. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail.

[0031] Reference Figure 1The embodiment of the present application discloses a powder sweeping mechanism, which is used to sweep the coffee powder cake for the brewing unit 2 in the coffee machine. There is a working chamber 1 in the coffee machine. In the embodiment of the present application, the brewing unit moves linearly in the working chamber 1 under the drive of the unit driven in the coffee machine. The brewing chamber moves upward, passes through the powder receiving position to add coffee powder, passes through the powder pressing position to press the powder cake, and finally reaches the extraction position to complete the coffee extraction. When the coffee extraction is completed, the brewing chamber moves downward, and pushes the powder cake to the top of the brewing chamber during the movement, and then reaches the powder sweeping position. The powder sweeping mechanism sweeps the powder cake above the brewing chamber when the brewing chamber reaches the powder sweeping position.

[0032] Furthermore, a powder receiving bucket 11 is provided in the working chamber 1 , and the swept powder cakes fall and are collected in the powder receiving bucket 11 .

[0033] Reference Figure 1 and Figure 2 The powder sweeping mechanism includes a powder sweeping bracket 3, a powder scraping blade 4, a connecting rod driving structure 5 and a trigger structure.

[0034] The powder sweeping bracket 3 is fixedly connected to the outside of the brewing unit 2, and the top of the powder sweeping bracket 3 is flush with the top of the brewing unit 2, or the top of the powder sweeping bracket 3 is lower than the top of the brewing unit 2, so that the powder cake can be swept away through the top of the powder sweeping bracket 3. The clamping structure of the powder sweeping bracket 3 and the brewing unit 2 is not limited in this application, as long as the powder sweeping bracket 3 can be fixedly connected to the brewing unit 2.

[0035] Reference Figure 2 and Figure 3 A powder scraping groove 31 parallel to the top of the brewing chamber is provided on the top of the powder sweeping bracket 3, the powder scraping blade 4 is slidably connected to the powder scraping groove 31, and the connecting rod driving structure 5 is used to drive the powder scraping blade 4 to slide relative to the powder scraping groove 31.

[0036] The connecting rod driving structure 5 includes a connecting rod structure, a rotating shaft 53 and a connecting rod driving member 54. The connecting rod structure includes a first connecting rod 51 and a second connecting rod 52 which are hinged to each other. The other end of the first connecting rod 51 is rotatably connected to the powder scraping blade 4, and the other end of the second connecting rod 52 is fixedly connected to the rotating shaft 53. The rotating shaft 53 is rotatably arranged in the powder sweeping bracket 3, and the connecting rod driving member 54 is fixedly connected to the rotating shaft 53. An end cap 32 is arranged on one side of the powder sweeping bracket 3. The end cap 32 is provided with a limiting window 321 which cooperates with the connecting rod driving member 54. When the end cap 32 is buckled on the powder sweeping bracket 3, the connecting rod driving member 54 passes through the limiting window 321 and extends out of the powder sweeping bracket 3. When the connecting rod driving member 54 is rotated, the rotating shaft 53 can be driven to rotate by the connecting rod driving member 54, and then the powder scraping blade 4 is driven to slide relative to the powder scraping groove 31 by the connecting rod structure to complete the powder cake sweeping.

[0037] The limiting window 321 is a long strip through hole provided on the end cover 32, and the length direction of the through hole is perpendicular to the axial direction of the rotating shaft 53. When the connecting rod driving member 54 rotates, the limiting window 321 can limit the rotation angle of the connecting rod driving member 54.

[0038] Reference Figure 3 and Figure 4 The scraper blade 4 includes an integrally arranged scraper plate 41, a connecting column 42 penetrating the scraper groove 31, and a sliding stop plate 43. The connecting column 42 is arranged at the end of the scraper plate 41 close to the scraper groove 31 along the length direction of the scraper plate 41, and the sliding stop plate 43 is "L-shaped" as a whole. The longitudinal part of the sliding stop plate 43 abuts against the side of the scraper groove 31 facing the brewing chamber, and the transverse part of the sliding stop plate 43 is located above the scraper groove 31 and cooperates with the connecting column 42 to slide and clamp the scraper groove 31. The first connecting rod 51 is rotatably connected to the scraper blade 4 through the connecting column 42.

[0039] Furthermore, the connecting shaft is connected to the powder sweeping bracket 3 via a first reset torsion spring 55. In the initial state, the powder scraping blade 4 is located on the side of the powder scraping groove 31 facing the connecting rod driving member 54 under the action of the first reset torsion spring 55. When the powder is swept away, the powder scraping blade 4 returns to the initial state under the action of the first reset torsion spring 55.

[0040] Reference Figure 1 , Figure 3 and Figure 5In one embodiment, the trigger structure includes a powder knife lever 6, and the powder knife lever 6 is connected to the inner wall of the working chamber 1 of the coffee machine through a second reset torsion spring (not shown in the figure). In the initial state, the length direction of the powder knife lever 6 is perpendicular to the moving direction of the brewing unit 2, and the powder knife lever 6 has an upward elastic rotation space under the action of the second reset torsion spring. When the brewing unit 2 moves downward and passes through the powder knife lever 6, the powder knife lever 6 does not rotate, so that the powder knife lever 6 drives the connecting rod driving member 54 to rotate, thereby driving the powder scraping blade 4 to slide along the powder scraping groove 31 to complete the powder scraping; when the brewing unit 2 moves upward and passes through the powder knife lever 6, the powder knife lever 6 rotates upward under the driving of the connecting rod driving member 54 to form a movement to give way to the brewing unit 2.

[0041] Reference Figure 6 In another preferred embodiment, the scraper groove 31 extends upward in an arc shape toward the end of the trigger structure to form an end groove 311. When the scraper blade 4 moves to the initial position, the connecting column 42 is located in the end groove 311. When the connecting rod driving structure 5 drives the scraper blade 4 to slide along the scraper groove 31, the connecting column 42 first slides downward along the arc structure of the end groove 311, and then slides linearly along the scraper groove 31. The provision of the end groove 311 can reduce the force required to be applied when the connecting rod driving structure 5 drives the scraper blade 4 to start moving, thereby reducing the wear force on the end of the scraper groove 31 and increasing the service life of the scraper groove 31.

[0042] In addition, the present application also discloses a coffee machine, in which the powder sweeping mechanism is provided.

[0043] The working principle of the embodiment of the present application is as follows: after the coffee extraction is completed, the brewing unit 2 moves downward and pushes the powder cake to the top of the brewing chamber. When the brewing unit 2 passes through the trigger structure, the brewing unit 2 and the trigger structure generate relative motion, so that the trigger structure toggles the connecting rod driving structure 5, driving the powder scraper 4 to scrape off the powder cake above the brewing chamber. On the one hand, the action of the powder sweeping mechanism is driven by the brewing unit 2, and there is no need to configure a separate drive motor to drive the powder sweeping mechanism to work; on the other hand, since the powder scraper 4 moves in a straight line, it reduces the space occupied in the coffee machine compared to the rotary powder scraper structure, which is conducive to reducing the design volume of the coffee machine.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A powder sweeping mechanism, characterized in that: include: A powder scraper (4) is arranged above the brewing chamber and is used to sweep away powder cakes; A connecting rod driving structure (5) is arranged on the brewing unit (2) and is used to drive the powder scraping blade (4) to move linearly; The trigger structure is arranged inside the coffee machine and is used to toggle the connecting rod driving structure (5) when the connecting rod driving structure (5) passes through the trigger structure.

2. A powder sweeping mechanism according to claim 1, characterized in that: It also comprises a powder sweeping bracket (3), the powder sweeping bracket (3) being detachably fixedly connected to the brewing unit (2), and the powder scraping blade (4) and the connecting rod driving structure (5) are both arranged on the powder sweeping bracket (3).

3. A powder sweeping mechanism according to claim 2, characterized in that: The powder scraping bracket (3) is provided with a powder scraping groove (31) parallel to the top of the brewing chamber, and the powder scraping sheet (4) is slidably connected to the powder scraping groove (31).

4. A powder sweeping mechanism according to claim 3, characterized in that: The connecting rod driving structure (5) comprises a connecting rod structure, a rotating shaft (53) and a connecting rod driving member (54); one end of the connecting rod structure is rotatably connected to the powder scraping blade (4), and the other end is fixedly connected to the rotating shaft (53); the connecting rod driving member (54) is fixedly connected to the rotating shaft (53); the rotating shaft (53) is rotatably arranged in the powder sweeping bracket (3); when the connecting rod driving structure (5) moves past the trigger structure, the trigger structure drives the connecting rod driving structure (5) to rotate through the connecting rod driving member (54).

5. A powder sweeping mechanism according to claim 4, characterized in that: The powder sweeping bracket (3) is provided with an end cover (32), the end cover (32) is provided with a limit window (321), and the connecting rod driving member (54) passes through the limit window (321) and extends to the outside of the powder sweeping bracket (3).

6. A powder sweeping mechanism according to claim 4, characterized in that: The powder sweeping mechanism further comprises a first return torsion spring (55), and the rotating shaft (53) is connected to the powder sweeping bracket (3) via the first return torsion spring (55).

7. A powder sweeping mechanism according to claim 3, characterized in that: The powder scraping piece (4) comprises an integrally arranged powder scraping plate (41), a connecting column (42) penetrating the powder scraping groove (31), and a sliding limit plate (43), wherein a longitudinal portion of the sliding limit plate (43) abuts against a side of the powder scraping groove (31) facing the brewing chamber, and a transverse portion of the sliding limit plate (43) is located above the powder scraping groove (31).

8. A powder sweeping mechanism according to claim 7, characterized in that: The powder scraping groove (31) extends upward in an arc shape toward the end of the trigger structure to form an end groove (311).

9. A powder sweeping mechanism according to claim 2, characterized in that: The trigger structure comprises a powder knife lever (6) and a second return torsion spring, and the powder knife lever (6) is connected to the coffee machine via the second return torsion spring.

10. A coffee machine, characterized in that: The coffee machine is provided with a powder sweeping mechanism according to any one of claims 1 to 9.

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