Drink extraction device

Abstract

To provide a beverage extraction device capable of inhibiting dimensions in a height direction of the beverage extraction device from becoming large.SOLUTION: A beverage extraction device includes an extraction part having a cylinder and a piston for extracting beverages using a raw material and hot or cold water in the cylinder, and a rise regulation part. The rise regulation part includes a contact part configured so as to be brought into contact with / separated from an outer peripheral surface of the piston, and a regulation control part for regulating the rise of the piston accompanying the rise of the cylinder by causing the contact part to come in contact with the piston while allowing the rise of the piston accompanying the rise of the cylinder by separating the contact part from the piston.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to a beverage brewing machine. [Background technology]

[0002] Conventionally, there is known a beverage extraction device that extracts a beverage using ingredients and hot or cold water inside a cylinder, exposes the residue of the ingredients after the beverage is extracted to the outside of the cylinder, and removes the residue exposed to the outside of the cylinder (see, for example, Patent Document 1).

[0003] The beverage extraction device of Patent Document 1 extracts coffee from coffee powder and hot water in a space defined by the extraction cylinder and the lower piston, and then lowers the extraction cylinder and the lower piston. The beverage extraction device further lowers the extraction cylinder even after a support is inserted into the shaft of the lower piston, thereby removing the lump of coffee powder from the extraction cylinder after the coffee is extracted. After that, the beverage extraction device removes the lump of coffee powder from above the lower piston and raises the extraction cylinder. When the extraction cylinder rises, the rise of the lower piston is restricted by the frictional force between an O-ring of the support and the inner surface of the shaft. As a result, a space is formed defined by the extraction cylinder and the lower piston in which coffee powder is loaded. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 5-506389 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the beverage extraction device of Patent Document 1, a support for restricting the ascent of the lower piston is disposed below the lower piston, which increases the height dimension of the beverage extraction device.

[0006] The present disclosure is devised to solve the above-mentioned problems, and aims to provide a beverage extraction device that can prevent the height dimension of the beverage extraction device from increasing. [Means for solving the problem]

[0007] The beverage extraction device of the present disclosure includes an extraction unit having a cylinder and a piston, and extracting a beverage using ingredients and hot water or cold water in the cylinder; an ascent restriction unit; A fixed chute that is fixed above the cylinder and that feeds the raw material into the cylinder; and a moving part. the rise regulating portion comprises a contact portion configured to be able to come into contact with and separate from an outer circumferential surface of the piston, and a regulating control portion configured to regulate the rise of the piston associated with the rise of the cylinder by bringing the contact portion into contact with the piston, and to allow the rise of the piston associated with the rise of the cylinder by moving the contact portion away from the piston, The extraction unit has a cap inserted into the cylinder, and is configured to be able to extract a beverage using the raw material compressed by the piston and the cap in the cylinder and the hot water or the cold water. The moving unit moves the cap between a first position between the fixed chute and the cylinder and a second position different from the first position. The regulating control unit brings the abutting portion into contact with the piston in synchronization with the movement of the cap from the first position to the second position, and moves the abutting portion away from the piston in synchronization with the movement of the cap from the second position to the first position. The regulating control unit converts the movement of the cap into the movement of the abutting portion, and moves the abutting portion toward and away from the piston. The regulating control unit includes a cam that moves integrally with the cap, and a link member that is arranged to be able to reciprocate in a predetermined direction in accordance with the movement of the cam. At least one of the abutting portion and the link member is formed with an inclined surface that converts the movement of the link member into the movement of the abutting portion. . Effect of the Invention

[0008] According to the beverage extraction device of the present disclosure, it is possible to prevent the height dimension of the beverage extraction device from becoming large. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of the beverage extractor from the front side; [Diagram 2] FIG. 2 is a perspective view of the beverage extractor from the rear and below; [Diagram 3] FIG. 2 is an exploded perspective view of the beverage extractor; [Figure 4] This is an enlarged view of the lower part of the right side surface. [Diagram 5] FIG. 1 is a vertical cross-sectional view of a portion of a beverage extractor, showing a state in which a cylinder is located at a powder receiving position; [Figure 6] FIG. 1 is a perspective view of a portion of a beverage brewing machine, showing a cylinder in a powder receiving position; [Figure 7] FIG. 1 is a perspective cross-sectional view of a portion of a beverage brewing machine; [Figure 8] A plan view of the moving member and the pushing member [Figure 9] A longitudinal section taken along line AA in FIG. [Figure 10] A longitudinal section taken along line BB in FIG. [Figure 11] A front view of the moving member and the pushing member [Figure 12A] Front view of the extrusion member [Figure 12B] A longitudinal sectional view taken along line CC in FIG. 12A. [Figure 13] FIG. 1 is a perspective cross-sectional view of a portion of a beverage brewing machine; [Figure 14] Block diagram showing a control system of a beverage extraction device [Figure 15] Timing chart of beverage serving process [Figure 16] Flowchart of beverage serving process [Figure 17] FIG. 2 is a longitudinal sectional view of the beverage extractor with the cap in a first position; [Figure 18] FIG. 1 is a perspective view of a beverage brewing device with a cap in a first position; [Figure 19] FIG. 1 is a vertical cross-sectional view of a beverage extractor with a cap inserted into a cylinder; [Figure 20] FIG. 1 is a longitudinal cross-sectional view of a beverage extractor with the dregs exposed from the cylinder; [Figure 21] FIG. 1 is a longitudinal section of a beverage brewing device after removing the residue on the piston [Figure 22] FIG. 13 is a perspective view of a modified beverage extractor in a state where the cylinder is located at a powder receiving position; [Diagram 23] FIG. 1 is a perspective view of a modified beverage brewing device with a cap in a first position; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Embodiment] Hereinafter, one embodiment of the present disclosure will be described.

[0011] <Configuration of beverage extraction device> First, the configuration of the beverage extraction device will be described. The beverage extraction device 1 shown in Figs. 1 to 3 extracts strong coffee liquid, i.e., espresso, by compressing coffee bean powder and supplying hot water under pressure. The beverage extraction device 1 also extracts drip-flavored coffee by compressing coffee bean powder at a pressure lower than that for espresso extraction and supplying hot water under a pressure lower than that for espresso extraction. In the following, espresso and drip-flavored coffee may be referred to as "coffee liquid" without distinction. The coffee liquid is an example of a beverage. The beverage extraction device 1 includes a frame 10, an extraction unit 20, a lifting and lowering drive unit 30, a material supply unit 40, and a cap moving unit 50. The cap moving unit 50 (hereinafter referred to as "moving unit 50") moves a cap 24, which will be described later.

[0012] 1, frame 10 has a bottom surface portion 11 that is rectangular in plan view, and a left surface portion 12 and a right surface portion 13 that extend upward from both left and right side edges of bottom surface portion 11, and is configured so that the front, rear and top surfaces are open. An outer slit 121 that extends vertically is formed in the center of left surface portion 12 in the front-to-rear direction. An outer slit (not shown) that has the same shape as outer slit 121 is formed in a position facing outer slit 121 on right surface portion 13.

[0013] A scraping unit 14 is fixed to the front ends of the left and right surface portions 12 and 13 so as to bridge the left and right surface portions 12 and 13. The scraping unit 14 is formed in a rectangular plate shape from an elastically deformable material, such as rubber. The scraping unit 14 is fixed so as to come into contact with a lower surface 241 of the cap 24 during movement of the cap 24, which will be described later, and scrape off the grounds of coffee beans adhering to the lower surface 241 over the entire surface of the lower surface 241. The grounds scraped off by the scraping unit 14 are collected by a collection tray disposed below the frame 10. A drive unit holding member 15 is fixed to the upper portion of the rear ends of the left and right surface portions 12 and 13 so as to bridge the left and right surface portions 12 and 13.

[0014] As shown in Fig. 2, rear piping connector 16 is fixed to the rear portion of left side surface portion 12. A hot water inlet portion 221B (described later) of cylinder 22 is connected to the front end portion of rear piping connector 16 via a deformable pipe (not shown). In addition, a hot water supply portion 19 (see Fig. 14) is connected to the rear end portion of rear piping connector 16 via a hot water supply pipe (not shown). Hot water supply portion 19 supplies hot water to extraction portion 20 (specifically, inside cylinder 22) via rear piping connector 16.

[0015] As shown in Fig. 3, the extraction unit 20 is configured so as to be attachable and detachable within the frame 10 from the front of the frame 10. The extraction unit 20 includes an extraction unit frame 21, a cylinder 22, a piston 23, and a cap 24. The extraction unit 20 extracts coffee liquid using coffee bean powder compressed by the piston 23 and cap 24 within the cylinder 22 and hot water supplied from the hot water supply unit 19.

[0016] The extracted coffee liquid is discharged from the extraction unit 20 and supplied to a cup (not shown). The piping system that guides the coffee liquid to the cup is configured as follows. The coffee in the cylinder 22 is discharged from a coffee liquid outlet 24B of the cap 24, which will be described later. A deformable pipe is connected to the coffee liquid outlet 24B, which is connected to the rear end of a front pipe connector 17 that is fixed to the front portion of the left wall portion 12. A coffee liquid pipe (not shown) is connected to the front end of the front pipe connector 17. The coffee liquid pipe is connected to a nozzle located above the cup, and the coffee liquid is poured into the cup from the nozzle.

[0017] After the coffee liquid is extracted, the extraction unit 20 lowers the cylinder 22 relative to the piston 23, thereby exposing the grounds of the coffee beans used to extract the coffee liquid on the upper side of the cylinder 22. The extraction unit 20 is configured to receive coffee bean powder to be used in the next extraction of coffee liquid into the cylinder 22 by raising the cylinder 22 relative to the piston 23 after the grounds are removed by the push-out member 70 described below.

[0018] The extraction unit frame 21 includes a bottom surface portion 211 and a pair of side surfaces 212 extending upward from the left and right side edges of the bottom surface portion 211, and is configured so that the front, rear and top surfaces are open. An inner slit 212A extending vertically is formed in the center of the side surface portion 212 in the front-to-rear direction. The inner slit of the left side surface portion 212 is not shown. A guide portion 212B extending in the front-to-rear direction is provided on each of the opposing surfaces of the pair of side surfaces 212.

[0019] 4, which is an enlarged view of the lower portion of the right side surface portion 212, a vertically extending rotation shaft 211A is provided at each of the left and right rear portions of the bottom surface portion 211. A first spring receiving portion 211B is provided at the rear side of the rotation shaft 211A. A second spring receiving portion 211C is provided at the front and below the rotation shaft 211A.

[0020] As shown in Fig. 5, which is a vertical cross-sectional view of a portion of the beverage extraction device 1, the cylinder 22 includes a cylinder body 221. The cylinder body 221 is formed in a cylindrical shape. The cylinder body 221 is provided with a retaining portion 221A. The retaining portion 221A is formed so as to protrude from the lower end of the cylinder body 221 toward the inside of the cylinder body 221, and prevents the piston 23 from coming off the cylinder body 221. In addition, the rear side of the cylinder body 221 is provided with a hot water intake portion 221B, which is also shown in Fig. 2. The hot water intake portion 221B is formed so as to protrude rearward from the outer circumferential surface of the cylinder body 221, and supplies hot water to the inside of the cylinder body 221.

[0021] 6, which is a perspective view of a portion of the beverage extraction device 1, a pair of supported portions 221C are provided on the left and right sides of the cylinder body 221. The pair of supported portions 221C are formed so as to protrude in a rod-like shape from the outer circumferential surface of the cylinder body 221 to the left and right, respectively.

[0022] As shown in Figures 5 and 6, the cylinder 22 further includes an accommodating member 222 that accommodates the cylinder body 221 therein. The accommodating member 222 is formed in a substantially rectangular prism shape. As shown in Figure 5, a through hole 222A is formed in the accommodating member 222. The through hole 222A passes through the accommodating member 222 in the vertical direction, and is formed in a shape in which the inner diameter is substantially equal to the outer diameter of the cylinder body 221. The cylinder body 221 is accommodated inside the through hole 222A.

[0023] 5, a locking portion 222B is formed on the housing member 222. The locking portion 222B is formed so as to protrude rearward from the upper end of the rear surface of the housing member 222.

[0024] A rear communication groove 222C is formed in the housing member 222. The rear communication groove 222C is formed to extend upward from the lower end of the rear wall of the housing member 222, and is configured to communicate between the through hole 222A and the outside of the housing member 222. When the cylinder body 221 is housed inside the through hole 222A, as shown in Figures 2 and 5, the molten metal receiving portion 221B protrudes to the outside of the housing member 222 via the rear communication groove 222C.

[0025] 6, a pair of side communication grooves 222D are formed in the accommodating member 222. The pair of side communication grooves 222D are formed to extend upward from the lower ends of the left and right side walls of the accommodating member 222, and are configured to communicate between the through hole 222A and the outside of the accommodating member 222. When the cylinder main body 221 is accommodated inside the through hole 222A, the pair of supported portions 221C each protrude to the outside of the accommodating member 222 via the side communication grooves 222D.

[0026] A pair of scum guides 222E are formed on the housing member 222. The pair of scum guides 222E are formed in a plate shape extending upward from both left and right side edges on the upper surface of the housing member 222. The distance between the pair of scum guides 222E is approximately the same as the left-right length of a pusher body 72 of the extrusion member 70, which will be described later. The pair of scum guides 222E prevent the scum from falling outward from both left and right sides of the pusher body 72 when the pusher body 72 moves forward to remove the scum exposed above the cylinder 22. The housing member 222 supports a pair of pushed-up parts 715 (see FIG. 5), which will be described later, of the extrusion member 70 from below by the left and right sides of the through hole 222A on the upper surface of the housing member 222.

[0027] As shown in FIG. 5, the piston 23 includes a head portion 231 that moves up and down inside the cylinder body 221. The head portion 231 is formed in a cylindrical shape with an outer diameter that is approximately equal to the inner diameter of the cylinder body 221 and larger than the inner diameter of the retaining portion 221A. The head portion 231 forms an extraction space 201 for extracting coffee liquid together with the cylinder body 221. A filter (not shown) is disposed on the upper surface of the head portion 231. An O-ring 231A is disposed on the outer circumferential surface of the head portion 231. A hot water flow passage 231B is formed inside the head portion 231. The hot water flow passage 231B is configured to guide hot water supplied to the inside of the cylinder body 221 through the hot water intake portion 221B into the inside of the head portion 231 through an opening formed in a part of the side surface of the head portion 231, and supply the hot water to the extraction space 201 through a plurality of openings formed on the upper surface of the head portion 231.

[0028] 5 and 6, piston 23 further includes shaft portion 232 extending downward from head portion 231, and piston protruding portion 233 protruding horizontally from shaft portion 232. Shaft portion 232 is formed in a cylindrical shape whose outer diameter is approximately equal to the inner diameter of retaining portion 221A. Piston protruding portion 233 is provided so as to protrude from the lower end of shaft portion 232 in the shape of a circular ring plate.

[0029] The cap 24 is formed in a cylindrical shape with an outer diameter substantially equal to the inner diameter of the cylinder body 221, and is configured to be insertable into the cylinder body 221. A filter (not shown) is disposed on the lower surface 241 of the cap 24. An O-ring 24A is disposed on the outer peripheral surface of the cap 24. The cap 24 is provided with a coffee liquid outlet 24B. The coffee liquid outlet 24B is formed so as to protrude forward from the outer peripheral surface of the cap 24. A coffee liquid flow passage 24C is formed inside the cap 24. The coffee liquid flow passage 24C is configured so as to guide the coffee liquid extracted in the extraction space 201 into the inside of the cap 24 through an opening formed in the center of the lower surface 241 of the cap 24, and to allow the coffee liquid to be taken out of the beverage extraction device 1 through the coffee liquid outlet 24B.

[0030] 1 to 3 raises and lowers the cylinder 22 relative to the piston 23 and the cap 24. The lifting and lowering drive unit 30 includes one lifting motor 31 and a pair of lifting mechanisms 32.

[0031] The lift motor 31 drives a pair of lift mechanisms 32. The lift motor 31 is disposed on the right side portion 13 of the frame 10. A motor-side pulley 31A is fixed to the rotating shaft of the lift motor 31.

[0032] Of the pair of lifting mechanisms 32, the right lifting mechanism 32 is disposed on the right surface 13 of the frame 10, and the left lifting mechanism 32 is disposed on the left surface 12. Each lifting mechanism 32 includes a lifting shaft 321, a nut 322, and a coupling 323.

[0033] Each lift shaft 321 is, for example, formed of a trapezoidal screw, and is disposed on the left side surface 12 and the right side surface 13 so as to extend vertically and rotate. A first pulley 321A is fixed to a lower portion of each lift shaft 321. A first drive belt 33 is wound around the pair of first pulleys 321A. As shown in FIG. 1, a second pulley 321B is fixed to a portion of the lift shaft 321 disposed on the right side surface 13 above the first pulley 321A. A second drive belt 34 is wound around the second pulley 321B and the motor side pulley 31A.

[0034] Each nut 322 is screwed onto each lift shaft 321 .

[0035] The coupling 323 is formed, for example, in a rectangular parallelepiped shape. The coupling 323 is formed with a shaft insertion hole 323A and a support groove 323B. The shaft insertion hole 323A is formed to penetrate the coupling 323 in the vertical direction. Each coupling 323 is fixed to the upper part of each nut 322 in a state in which each lift shaft 321 is inserted into each shaft insertion hole 323A and rotation is restricted by contact with the left surface part 12 or the right surface part 13. With this configuration, each coupling 323 moves up and down according to the rotation direction of the lift shaft 321 without changing its posture. The support groove 323B is formed to extend from the front end of the coupling 323 to the center. Each support groove 323B supports each supported part 221C of the cylinder 22 fitted therein.

[0036] With the above-mentioned configuration, when the lift motor 31 is driven, the driving force is transmitted to each lift shaft 321 via the first drive belt 33 and the second drive belt 34. When each lift shaft 321 rotates in the same direction at the same speed, the cylinders 22 supported by each coupling 323 are raised and lowered.

[0037] 1, 3 and 5 supplies coffee bean powder to the extraction unit 20. The raw material supply unit 40 includes a fixed chute 41 and a mill (not shown).

[0038] The fixed chute 41 includes a chute body 411 and a chute base 412. The chute body 411 is formed in a cylindrical shape with an inner diameter equal to or smaller than the inner diameter of the cylinder body 221. The chute base 412 is provided so as to protrude laterally from the lower end of the chute body 411. The chute base 412 is formed in a rectangular shape in a plan view. The fixed chute 41 is fixed to the upper end of the extraction unit frame 21 so that the chute body 411 and the cylinder body 221 are positioned coaxially.

[0039] As shown in Fig. 7, which is a perspective cross-sectional view of a portion of the beverage extraction device 1, a vibration generating protrusion 412A is formed on the chute base 412 (note that Fig. 7 shows a state in which a movable chute 53, which will be described later, is in the middle of moving relative to the fixed chute 41. Therefore, the positional relationship between the movable chute 53 and the fixed chute 41 in Fig. 7 differs from the positional relationship between the movable chute 53 and the fixed chute 41 in Fig. 5). The vibration generating protrusion 412A is an example of a vibrating section, and is formed so as to protrude downward in a substantially hemispherical shape from a portion of the lower surface of the chute base 412. As shown in Fig. 5, the vibration generating protrusion 412A is located on the rear side of the chute body 411.

[0040] The mill is fixed to the upper end of a fixed chute 41. The mill grinds coffee beans supplied from a canister (not shown) by driving a mill motor 42 (see FIG. 14), and feeds the coffee bean powder into the extraction unit 20 via the fixed chute 41 and a movable chute 53 (described later).

[0041] 1 to 3 and 6 moves the cap 24 between a first position between the fixed chute 41 and the cylinder 22 and a second position forward of the first position. The moving unit 50 includes a moving member 51.

[0042] 3, guide portions 511 extending in the front-rear direction are provided at the upper ends of both the left and right side surfaces of the movable member 51. Each guide portion 511 is supported from below by the guide portion 212B of the extraction unit frame 21, so that the movable member 51 can move in the front-rear direction relative to the extraction unit frame 21 while maintaining a state in which its upper surface is close to the lower end of the fixed chute 41.

[0043] FIG. 8 is a plan view of the moving member 51 and the pushing member 70, and FIG. 9 is a vertical cross-sectional view taken along line AA in FIG.

[0044] As shown in Figs. 8 and 9, the moving member 51 includes a moving base 52. The moving base 52 is formed with a raw material passing hole 521. The raw material passing hole 521 penetrates the moving base 52 in the vertical direction, and is formed so that its lower opening is located on the lower lower surface 52D. The raw material passing hole 521 is formed in a cylindrical shape with an inner diameter equal to or smaller than the inner diameter of the cylinder body 221. The moving member 51 moves so that the raw material passing hole 521, the chute body 411, and the cylinder body 221 are coaxially positioned, and the surrounding area of ​​the raw material passing hole 521 in the moving base 52 functions as a movable chute 53 that guides the coffee bean powder introduced through the fixed chute 41 to the extraction unit 20. The movable chute 53 moves between a first position between the fixed chute 41 and the cylinder 22 and a third position behind the first position as the moving member 51 moves.

[0045] The moving base 52 is further formed with a push-out member holding part 522. The push-out member holding part 522 is formed in front of the raw material passing hole 521 so as to penetrate the moving base 52 in the up-down direction. The push-out member holding part 522 is formed in a rectangular shape whose longitudinal direction is parallel to the left-right direction in a plan view. The shape of the push-out member holding part 522 will be described later.

[0046] The moving member 51 further includes a cap holding portion 54. The cap holding portion 54 is provided so as to extend outward from the upper end of the front surface of the moving base 52 in the shape of a rectangular plate. As shown in Figures 1, 2, 5 and 6, the cap holding portion 54 holds the cap 24 from above so that the coffee liquid outlet portion 24B is located forward.

[0047] 8 and 9, the moving member 51 further includes a lever control portion 55. The lever control portion 55 is provided on the rear surface of the moving base portion 52. A lever recess portion 551 is formed in the lever control portion 55. The lever recess portion 551 is formed to extend in the left-right direction and to be recessed downward.

[0048] 9, the moving base 52 is formed in a substantially rectangular parallelepiped shape with a cutout at the lower front portion. The front surface of the moving base 52 includes an upper front surface 52A and a lower front surface 52B located below the upper front surface 52A. The lower surface of the moving base 52 includes an upper lower surface 52C connecting the lower end of the upper front surface 52A to the upper end of the lower front surface 52B, and a lower lower surface 52D connecting the lower end of the lower front surface 52B to the lower end of the rear surface of the moving base 52.

[0049] FIG. 10 is a vertical cross-sectional view taken along line BB in FIG.

[0050] 9 and 10, push-out member holding portion 522 is formed so that a lower opening is located on upper lower surface 52C. Push-out member holding portion 522 is composed of holding recess 522A and push-out member insertion hole 522B.

[0051] The holding recess 522A is formed in a portion from the upper surface of the moving base 52 to a position a predetermined distance above the upper lower surface 52C. The pushing member insertion hole 522B is formed in the bottom surface of the holding recess 522A. The pushing member insertion hole 522B is formed so that its left-right center coincides with the left-right center of the bottom surface of the holding recess 522A and its front-rear length is the same as the front-rear length of the holding recess 522A. The left-right length of the pushing member insertion hole 522B is shorter than the left-right length of the bottom surface of the holding recess 522A. The flat surfaces (bottom surfaces of the holding recess 522A) located on both the left and right sides of the pushing member insertion hole 522B function as support parts 522C that support the pushing member 70 from below.

[0052] 11, which is a front view of the moving member 51 and the pushing member 70, a notch 521A is formed in a lower area at the center in the left-right direction of the upper front surface 52A. The notch 521A exposes a hook portion 714 of an elastic portion 713 (described later) of the pushing member 70 to the outside of the moving base 52.

[0053] As shown in Figs. 1 to 3 and 5, the moving unit 50 further includes a moving drive unit 56. The moving drive unit 56 moves the moving member 51 in the front-rear direction. The moving drive unit 56 is held by a drive unit holding member 15 of the frame 10. The moving drive unit 56 includes a moving motor 561. The moving motor 561 is fixed onto the drive unit holding member 15. As shown in Figs. 2, 5 and 6, the moving drive unit 56 further includes an operating member 562. The operating member 562 is fixed to a rotating shaft of the moving motor 561. A crank lever 563 extending in the horizontal direction is provided on the outer circumferential surface of the operating member 562. The crank lever 563 is provided at the tip of the crank lever 563 with a fitting pin portion 563A formed in a shape protruding downward and fitted into the lever recess 551. 6, a switch changeover recess 564 is provided in a portion of the outer circumferential surface of the operating member 562 above the crank lever 563. The switch changeover recess 564 is formed in a shape recessed toward the rotation center of the operating member 562 at a position shifted by 90° around the rotation center of the operating member 562 from the crank lever 563 in a plan view.

[0054] As shown in Figs. 4 and 6, the beverage extraction device 1 includes a rise regulating unit 60. The rise regulating unit 60 includes a pair of abutment members 61 and a pair of regulation control units 62. The rise regulating unit 60 regulates the rise of the piston 23 accompanying the rise of the cylinder 22 by bringing the abutment members 61 into contact with the piston protruding portion 233. The rise regulating unit 60 allows the rise of the piston 23 accompanying the rise of the cylinder 22 by not bringing the abutment members 61 into contact with the piston protruding portion 233. The rise regulating unit 60 may include one abutment member 61 and one regulation control unit 62, or three or more abutment members 61 and one regulation control unit 62. Figs. 4 and 6 each show one abutment member 61 and one regulation control unit 62.

[0055] Each abutting member 61 is formed in a rectangular plate shape. As shown in FIG. 4, one end side of each abutting member 61 in the longitudinal direction is rotatably inserted into a rotation shaft 211A provided on the extraction unit frame 21. A portion on the rotation tip side of each abutting member 61 constitutes an abutting portion 611. The abutting portion 611 approaches the piston 23 due to the rotation of the abutting member 61, and restricts the rise of the piston 23 by contacting the upper surface of the piston protruding portion 233. A third spring receiving portion 612 is provided at one end of each abutting member 61. The third spring receiving portion 612 is provided so as to face the first spring receiving portion 211B of the extraction unit frame 21.

[0056] As shown in FIG. 6, each of the restriction control parts 62 includes a cam 621. Each of the cams 621 is formed on both the left and right ends of the lower surface of the moving base 52. Each of the cams 621 includes a cam surface 621A provided at approximately the center in the front-rear direction from the rear end of the moving base 52, and a cam recess 621B provided in front of the cam surface 621A. The cam surface 621A is a horizontal surface. The cam recess 621B is formed in a shape recessed upward. The cam recess 621B includes an inclined plane that is inclined so that the front end is located higher than the rear end, and a horizontal plane located in front of the inclined plane.

[0057] As shown in Figures 3, 4 and 6, each restriction control section 62 further includes a link member 622. Each link member 622 includes a slide section 622A. The slide section 622A is formed in a rectangular plate shape. As shown in Figure 3, both side edges of each slide section 622A are supported by each side section 212 of the extraction section frame 21 so as to be slidable in the up and down direction. As shown in Figures 4 and 6, a pin section 622C protruding downward is provided at the lower end of the slide section 622A.

[0058] As shown in FIG. 6, each link member 622 further includes an operating protrusion 622B. Each operating protrusion 622B is provided so as to protrude from the center of the surface of the slide portion 622A facing the inside of the extraction unit frame 21 and extend in the vertical direction. The upper end of the operating protrusion 622B is configured to contact the cam 621. The lower end of the operating protrusion 622B is provided with an inclined surface 622B1 inclined with respect to the sliding direction (reciprocating movement direction) of each link member 622. The inclined surface 622B1 is inclined so that the upper end is located closer to the inside of the extraction unit frame 21 than the lower end, and is configured to contact the abutment member 61. The lower part of the inclined surface 622B1 in the slide portion 622A constitutes a separation position contact portion 622A1 with which the abutment member 61 comes into contact when it is farthest from the piston 23.

[0059] 4, each restriction control portion 62 further includes a biasing portion 623. Each biasing portion 623 includes a contact member biasing portion 624 and a link member biasing portion 625.

[0060] Each abutment member biasing portion 624 biases each abutment member 61 in a direction approaching the inclined surface 622B1 of each link member 622, that is, in a direction away from the piston 23. Each abutment member biasing portion 624 is disposed between the first spring receiving portion 211B and the third spring receiving portion 612, and is constituted by a coil spring that biases the third spring receiving portion 612 in a direction away from the first spring receiving portion 211B. Hereinafter, the force that biases the abutment member 61 in a direction away from the piston 23, which is generated by the abutment member biasing portion 624, may be referred to as a first biasing force.

[0061] Each link member biasing portion 625 biases each link member 622 upward. Hereinafter, the force that biases link member 622 upward, generated by link member biasing portion 625, may be referred to as a second biasing force. Each link member biasing portion 625 is inserted into pin portion 622C of link member 622 and is configured with a coil spring disposed between slide portion 622A and second spring receiving portion 211C.

[0062] FIG. 12A is a front view of the push-out member 70, and FIG. 12B is a vertical cross-sectional view taken along line CC in FIG. 12A.

[0063] As shown in Figures 12A and 12B, the beverage extraction device 1 includes a push-out member 70. The push-out member 70 removes grounds of coffee beans on the piston 23 exposed on the upper side of the cylinder 22. The grounds removed by the push-out member 70 are collected by a collection tray disposed below the frame 10. The push-out member 70 includes a main body member 71.

[0064] The main body member 71 is formed in a substantially rectangular plate shape. At the upper end portions of both left and right side surfaces of the main body member 71, supported portions 711 protruding laterally are provided. At the center of the main body member 71, a vertically long opening 712 is formed. In the opening 712, a plate-shaped elastic portion 713 extending downward from the upper end of the opening 712 is provided. The elastic portion 713 is configured to be elastically deformable in the front-rear direction. At a lower portion of the elastic portion 713, a hook portion 714 protruding forward is formed. The hook portion 714 includes an upper inclined surface 714A inclined so that its upper end is located rearward of its lower end, and a lower inclined surface 714B located below the upper inclined surface 714A and inclined so that its upper end is located forward of its lower end. At the left and right end portions of the lower end of the main body member 71, a pair of pushed-up portions 715 protruding downward are provided.

[0065] The pushing member 70 further includes a pushing body 72. The pushing body 72 is formed in a rectangular plate shape from an elastically deformable material, such as rubber. The pushing body 72 is attached to a lower portion of the main body member 71 by a screw 75 via a plate washer 74. The pushing body 72 is attached to the main body member 71 so that its lower end is at approximately the same height as the lower end of the pushed-up portion 715.

[0066] The pusher member 70 having the above configuration is inserted into the pusher member holding portion 522 so that the main body member 71 can move down by its own weight. As shown in Figs. 9 and 10, the pusher member 70 is inserted into the pusher member insertion hole 522B so that both main surfaces of the substantially rectangular plate-shaped main body member 71 face forward and backward, respectively. The supported portion 711 is supported by the supporting portion 522C of the pusher member holding portion 522, thereby restricting the downward movement of the pusher member 70. Furthermore, the contact between the upper end of the plate washer 74 and the upper front surface 52A of the moving base 52 restricts the upward movement of the pusher member 70.

[0067] The length of the main body member 71 in the left-right direction is set to be approximately the same as the length of the push-out member insertion hole 522B in the left-right direction. The height of the main body member 71 is set to be slightly lower than the height of the moving base 52. The length of the main body member 71 in the front-rear direction is set to be slightly shorter than the length of the push-out member insertion hole 522B in the front-rear direction. In other words, the main body member 71 is formed so that a gap is provided at the front and rear when the main body member 71 is inserted into the push-out member insertion hole 522B. By providing such a gap, the push-out member 70 is inclined so that the lower end is located rearward of the upper end, as shown by the two-dot chain line in FIG. 9, when removing the grounds of coffee bean powder on the piston 23, as will be described in detail later.

[0068] 13, which is a perspective cross-sectional view of a portion of the beverage extraction device 1, the pushing member 70 is configured to descend together with the cylinder 22 when the cylinder 22 descends with the locking portion 222B of the cylinder 22 locked to the hook portion 714 of the elastic portion 713. In this manner, the elastic portion 713, together with the locking portion 222B, constitutes the pushing member biasing portion 73 that biases the pushing member 70 downward as the cylinder 22 descends relative to the piston 23 and the cap 24.

[0069] As shown in FIG. 14, a block diagram illustrating a control system of the beverage brewing machine 1, the beverage brewing machine 1 includes a detection unit 80 and a control unit 90.

[0070] The detection unit 80 includes an upper limit position detection sensor 81, an extraction position detection sensor 82, a powder receiving position detection sensor 83, a lower limit position detection sensor 84, a forward position detection switch 85, and a backward position detection switch 86.

[0071] The upper limit position detection sensor 81 detects that the cylinder 22 has reached the upper limit position. Note that the cylinder 22 reaches the upper limit position only when the beverage extraction device 1 is not operating normally, and therefore the upper limit position detection sensor 81 will not detect the upper limit position of the cylinder 22 as long as the beverage extraction device 1 is operating normally. The extraction position detection sensor 82 detects that the cylinder 22 has reached the extraction position for extracting coffee liquid. The powder receiving position detection sensor 83 detects that the cylinder 22 has reached the powder receiving position (see FIG. 5) when coffee bean powder is added. The lower limit position detection sensor 84 detects that the cylinder 22 has reached the lower limit position (see FIG. 20).

[0072] 3, the position detection sensors 81, 82, 83, 84 (upper limit position detection sensor 81, extraction position detection sensor 82, powder receiving position detection sensor 83, and lower limit position detection sensor 84) are arranged on the right surface 13 of the frame 10 so as to be aligned in the relevant order from top to bottom. Each of the position detection sensors 81, 82, 83, 84 emits detection light toward the rear of the frame 10, and when the light receiving portion receives the detection light reflected by a reflecting portion (not shown) arranged on the coupling 323, it outputs a light receiving signal to the control portion 90 (each of the position detection sensors 81, 82, 83, 84 enters a detection state).

[0073] The forward position detection switch 85 detects that the moving member 51 is in the forward position (e.g., see Figures 5 and 6). When the moving member 51 is in the forward position, the cap 24 is in the second position while the movable chute 53 is in the first position, so that the coffee bean powder can be fed into the cylinder 22. The retracted position detection switch 86 detects that the moving member 51 is in the retracted position (e.g., see Figures 17 and 18). When the moving member 51 is in the retracted position, the cap 24 is in the first position while the movable chute 53 is in the third position, so that the coffee bean powder cannot be fed into the cylinder 22.

[0074] The position detection switches 85, 86 (forward position detection switch 85 and backward position detection switch 86) are disposed on the drive unit holding member 15. As shown in FIG. 6, the forward position detection switch 85 is disposed on the left side of the operating member 562, and the backward position detection switch 86 is disposed on the right side of the operating member 562. When the switch changeover recess 564 of the operating member 562 is located at a position opposite to the respective position detection switches 85, 86, the respective position detection switches 85, 86 are turned on and output a detection signal to the control unit 90. On the other hand, when the switch changeover recess 564 of the operating member 562 is not located at a position opposite to the respective position detection switches 85, 86, the respective position detection switches 85, 86 are turned off and do not output a detection signal to the control unit 90.

[0075] 14, the control unit 90 is configured to transmit and receive various signals between the operation unit 18, the hot water supply unit 19, the mill motor 42, the lifting motor 31, the moving motor 561, the upper limit position detection sensor 81, the extraction position detection sensor 82, the powder receiving position detection sensor 83, the lower limit position detection sensor 84, the forward position detection switch 85, and the backward position detection switch 86. A storage unit 91 that stores programs, data, etc. for controlling the beverage extraction device 1 is connected to the control unit 90. The control unit 90 controls the entire beverage extraction device 1 based on the operation of the operation unit 18 by the user and the programs, etc. stored in the storage unit 91. The control performed by the control unit 90 will be described later.

[0076] <Operation of beverage brewing device> Next, a beverage providing process will be described as an operation of the beverage extraction machine 1. In the following description, the flow of the operation of the beverage extraction machine 1 will be described mainly with reference to Fig. 15 which is a timing chart of the beverage providing process and Fig. 16 which is a flowchart of the beverage providing process.

[0077] First, until a user operates the operating unit 18 to start serving coffee, the beverage extraction device 1 is in a state in which the cylinder 22 is in the powder receiving position, the pushing member 70 is in a raised position above the cylinder 22, and the moving member 51 is in the forward position, as shown in Figures 5 and 6. Also, as shown in Figure 6, the abutting portion 611 of the rise regulating portion 60 is located above the piston protruding portion 233, and regulates the rise of the piston 23 associated with the rise of the cylinder 22. Also, the position detection sensors 82, 83, 84 and the position detection switches 85, 86 are in the states shown in Figure 15.

[0078] When the control unit 90 detects an operation by a user to start providing coffee (coffee liquid) (step S1 (see FIG. 16)), it performs an input of coffee bean powder into the extraction space 201 (step S2). During the period from time T1 to time T2 (see FIG. 15), the control unit 90 drives the mill motor 42 to grind the coffee beans supplied from the canister with the mill, and inputs the coffee bean powder C0 (see FIG. 17) into the extraction space 201 via the fixed chute 41 and the movable chute 53.

[0079] When the introduction of the coffee bean powder C0 into the extraction space 201 is completed, the control unit 90 drives the moving motor 561 to move the moving member 51 to the retreated position, and places the cap 24 at the first position (step S3 (see FIG. 16)). During the period from time T2 to time T3 (see FIG. 15), the moving motor 561 rotates the operating member 562, for example, 180° clockwise in a plan view from the state shown in FIG. 5 and FIG. 6. When the operating member 562 rotates, the switch changeover recess 564 rotates backward, and the crank lever 563 rotates backward so as to draw an arc. With the backward rotation of the switch changeover recess 564, the forward position detection switch 85 switches from on to off. With the backward rotation of the crank lever 563, the lever control unit 55 is pushed backward by the fitting pin portion 563A, and as a result, the moving member 51 moves backward. When the switch changeover recess 564 reaches a position facing the retracted position detection switch 86 and the retracted position detection switch 86 switches from OFF to ON, the control unit 90 stops driving the moving motor 561. As a result, the cap 24 reaches the first position, as shown in Fig. 17, a vertical sectional view of the beverage extraction device 1 with the cap in the first position, and Fig. 18, a perspective view of the beverage extraction device 1 with the cap in the first position.

[0080] 6, before the moving member 51 starts to move rearward, the link member 622 is restricted from sliding upward by the abutment of its upper end with the cam surface 621A of the cam 621. At this time, the abutment member 61 has a portion on the rotation base end side in contact with the inclined surface 622B1 of the operation protrusion 622B, and the abutment portion 611 located above the piston protruding portion 233 restricts the rise of the piston 23.

[0081] When the moving member 51 moves rearward and the upper end of the link member 622 reaches below the cam recess 621B of the cam 621, the restriction of the link member 622 from sliding upward by the cam 621 is released. Then, the link member 622 slides upward by the second biasing force generated by the link member biasing portion 625. When the link member 622 slides upward, the contact position between the abutment member 61 and the inclined surface 622B1 moves to the lower side of the inclined surface 622B1, and with this movement of the contact position, the abutment member 61 rotates by the first biasing force generated by the abutment member biasing portion 624. This rotation causes the abutment portion 611 to move in a direction away from the piston 23. Then, as shown in FIG. 18, the restriction of the rise of the piston 23 by the abutment portion 611 is released.

[0082] The rise restricting unit 60 restricts the rise of the piston 23 accompanying the rise of the cylinder 22 by bringing the abutment portion 611, which is configured to be able to approach and separate from the outer circumferential surface of the piston 23, into contact with the piston 23, while allowing the piston 23 to rise accompanying the rise of the cylinder 22 by moving the abutment portion 611 away from the piston 23. Therefore, the abutment portion 611 restricting the rise of the piston 23 can be disposed in a space to the side of the piston 23 that has conventionally existed in the extraction unit frame 21, rather than below the piston 23, and the dimensions in the height direction and horizontal direction (front-rear and left-right directions) of the beverage extraction device 1 can be prevented from increasing. In particular, the abutment portion 611 is positioned above the piston protruding portion 233 to restrict the rise of the piston 23, so that the rise of the piston 23 can be reliably restricted.

[0083] Furthermore, the restriction control unit 62 releases the restriction on the ascent of the piston 23 by the abutment unit 611 in synchronization with the rearward movement of the moving member 51, that is, in synchronization with the movement of the cap 24 from the second position to the first position. For this reason, as described below, the beverage extraction device 1 can raise the cylinder 22 and the piston 23 and perform tamping simply by starting the driving of the lifting motor 31 after the moving member 51 moves rearward, and can start tamping at an earlier timing than a configuration in which the restriction on the ascent of the piston 23 is released before or after the cap 24 is moved to the first position. Therefore, the time required to provide a beverage can be shortened.

[0084] Furthermore, when the moving member 51 moves backward, the link member 622 of the restriction control unit 62 slides upward by the cam 621 of the moving member 51. With this upward sliding of the link member 622, the abutting member 61 in contact with the inclined surface 622B1 of the link member 622 rotates, and the abutting portion 611 moves away from the piston 23. In this way, by applying a configuration for converting the movement of the cap 24 accompanying the backward movement of the moving member 51 into the movement of the abutting portion 611 as the restriction control unit 62, it becomes unnecessary to arrange a driving source for moving only the link member 622 and the abutting portion 611 in the beverage extraction device 1. As a result, the configuration of the beverage extraction device 1 can be simplified and made lighter. In particular, since the cam 621 and the link member 622 having the inclined surface 622B1 are applied as the configuration for converting the movement of the cap 24 into the movement of the abutting portion 611, the configuration of the beverage extraction device 1 can be further simplified.

[0085] Furthermore, the cam 621 is composed of a cam surface 621A and a cam recess 621B formed on the lower surface of the moving base 52. Therefore, the cam 621 can be formed more easily than the cam 671 composed of a rear horizontal groove 671A, an inclined groove 671B, and a front horizontal groove 671C, which will be described later with reference to FIG. 22. In addition, the link member urging portion 625 urges the link member 622 upward, and the abutment member urging portion 624 urges the abutment member 61 so that the abutment portion 611 moves away from the piston 23. Therefore, the link member 622 can be raised while being reliably in contact with the cam recess 621B, and the abutment portion 611 can be moved away from the piston 23 while the abutment member 61 is reliably in contact with the inclined surface 622B1. In addition, without providing the link member biasing portion 625, the abutment portion 611 may be moved in a direction away from the piston 23 by the first biasing force generated by the abutment member biasing portion 624, and the link member 622 may be slid upward in accordance with the movement of the abutment portion 611.

[0086] When the moving member 51 moves rearward, the pushing member 70 moves rearward with the pushing body 72 and the pushed-up portion 715 supported by the upper surface of the containing member 222. When the cap 24 reaches the first position, the pushing member 70 reaches a position rearward of the containing member 222, and the support of the pushing member 70 by the containing member 222 is released. When the support of the pushing member 70 is released, the pushing member 70 stops at the raised position due to, for example, frictional force between the pushing member 70 and the inner circumferential surface of the pushing member insertion hole 522B, or moves down due to its own weight, as shown in FIG. 17. When the pushing member 70 moves down due to its own weight, the pushing member 70 is located somewhere between the raised position and the lower limit position, with the position where the hook portion 714 contacts the locking portion 222B of the cylinder 22 being the lower limit position.

[0087] Furthermore, when the movable member 51 moves rearward, the scraping portion 14 comes into contact with the underside 241 of the cap 24. If grounds C1 (see FIG. 20) are attached to the underside 241, the grounds C1 are scraped off, so that the grounds C1 of the previously provided coffee bean powder can be prevented from mixing with the coffee bean powder C0 of the next coffee liquid to be provided, and deterioration in the quality of the coffee liquid can be prevented.

[0088] Furthermore, when the moving member 51 moves rearward, the vibration generating protrusion 412A transitions from a state in which it contacts a portion of the upper surface of the moving member 51 that is rearward of the raw material passing hole 521 to a state in which it is located within the raw material passing hole 521, that is, a state in which it is located below the movement trajectory of the upper opening edge of the movable chute 53. When the moving member 51 subsequently moves rearward, the vibration generating protrusion 412A transitions from a state in which it is located within the raw material passing hole 521 to a state in which it contacts a portion of the upper surface of the moving member 51 that is forward of the raw material passing hole 521. At the time of this contact, the movable chute 53 (moving member 51) vibrates, and if coffee bean powder C0 is attached to the inner circumferential surface of the raw material passing hole 521, the attached coffee bean powder C0 is detached.

[0089] In this way, the beverage extraction device 1 can simultaneously move the cap 24 from the second position to the first position and remove the coffee bean powder C0 adhering to the inner circumferential surface of the ingredient passing hole 521. Furthermore, since the vibration generating protrusion 412A is used as the vibrating section, the coffee bean powder C0 adhering to the inner circumferential surface of the ingredient passing hole 521 can be removed with a simple configuration.

[0090] Next, the control unit 90 lifts the cylinder 22 to perform tamping (step S4 (see FIG. 16)). At time T4 (see FIG. 15) after a predetermined time has elapsed since time T3, the control unit 90 starts driving the lift motor 31 so that the cylinder 22 lifts. When the cylinder 22 lifts, the piston 23 is no longer restricted by the contact portion 611 from lifting, so the piston 23 also lifts together with the cylinder 22. When the cylinder 22 starts to lift, the powder receiving position detection sensor 83 transitions from a detection state to a non-detection state, while the extraction position detection sensor 82 temporarily transitions from a non-detection state to a detection state. Then, as shown in FIG. 19, which is a vertical cross-sectional view of the beverage extraction device 1, the cap 24 is inserted into the cylinder 22. At time T5, when the current flowing through the lift motor 31 reaches a predetermined value, the control unit 90 detects that the compressed state of the coffee bean powder C0 has reached a predetermined state and tamping has ended. When the control unit 90 detects that the tamping is completed, it stops driving the lift motor 31 .

[0091] As the cylinder 22 rises, the locking portion 222B first comes into contact with the lower inclined surface 714B of the hook portion 714 of the push-out member 70. As the cylinder 22 rises further, the push-out member 70 rises while maintaining the state in which the lower inclined surface 714B is in contact with the locking portion 222B until the rise is restricted by the contact between the upper end of the plate washer 74 and the lower part of the upper front surface 52A of the moving base 52. As the cylinder 22 rises further, the contact position between the locking portion 222B and the lower inclined surface 714B moves upward, and as the contact position moves, the elastic portion 713 elastically deforms and the hook portion 714 moves backward. As the cylinder 22 rises further and the locking portion 222B is positioned above the lower inclined surface 714B, the elastic portion 713 and the hook portion 714 return to their original states. When the locking portion 222B is located above the lower inclined surface 714B, the pusher member 70 stops at the raised position due to, for example, friction with the inner circumferential surface of the pusher member insertion hole 522B, or moves down due to its own weight, as shown in Fig. 19. When the pusher member 70 moves down due to its own weight, the pusher member 70 moves to a position somewhere between the raised position and the lower limit position, with the position where the lower end of the pusher member 70 contacts the molten metal receiving portion 221B being the lower limit position.

[0092] Next, the control unit 90 extracts the coffee liquid (step S5 (see FIG. 16)). The control unit 90 drives the hot water supply unit 19 to supply pressurized hot water to the extraction space 201 during a period from time T6 to time T7 (see FIG. 15) after a predetermined time has elapsed since time T5, and during a period from time T8 to time T9 after a predetermined time has elapsed since time T7, thereby extracting the coffee liquid. The extracted coffee liquid is taken out from the coffee liquid outlet 24B of the cap 24, and supplied to a cup (not shown).

[0093] When the extraction of the coffee liquid is completed, the control unit 90 moves the cylinder 22 to the lower limit position to expose the grounds on the piston 23 to the upper side of the cylinder 22 (step S6 (see FIG. 16)). At time T10 (see FIG. 15) after a predetermined time has elapsed since time T9, the control unit 90 starts driving the lifting motor 31 so that the cylinder 22 descends. When the cylinder 22 descends, the piston 23 also descends, and when the lower end of the piston 23 contacts the bottom surface portion 211, only the cylinder 22 descends. In addition, when the cylinder 22 starts to descend, the extraction position detection sensor 82 temporarily transitions from a non-detection state to a detection state, and then the powder receiving position detection sensor 83 temporarily transitions from a non-detection state to a detection state. Then, when the lower limit position detection sensor 84 transitions from a non-detection state to a detection state at time T11, the control unit 90 stops driving the lifting motor 31. As a result, as shown in Figure 20, which is a vertical cross-sectional view of the beverage extraction device 1, the upper surface of the piston 23 is positioned at approximately the same height as the upper surface of the storage member 222 (at the same height as the upper surface of the storage member 222 or at a height slightly higher than the upper surface of the storage member 222), and the dregs C1 are exposed to the upper side of the cylinder 22.

[0094] Also, when the pushing member 70 is at rest above the lower limit position (for example, at the raised position) due to frictional force, the pushing member 70 is urged downward by the pushing member urging portion 73 and lowered as the cylinder 22 descends. First, as the cylinder 22 descends, the locking portion 222B comes into contact with the upper inclined surface 714A of the hooking portion 714 of the pushing member 70. When the cylinder 22 further descends, the pushing member 70 descends until the supported portion 711 is supported by the supporting portion 522C of the pushing member holding portion 522 while maintaining the state in which the upper inclined surface 714A is in contact with the locking portion 222B. When the cylinder 22 further descends, the contact position between the locking portion 222B and the upper inclined surface 714A moves downward, and as the contact position moves, the elastic portion 713 elastically deforms and the hooking portion 714 moves backward. When the cylinder 22 further descends and the locking portion 222B is positioned below the upper inclined surface 714A, the elastic portion 713 and the hook portion 714 return to their original states. When the descent of the cylinder 22 is completed, the upper surfaces of the containing member 222 and the piston 23 are positioned at approximately the same height as the lower ends of the pusher 72 and the pushed-up portion 715.

[0095] In this way, even if the push-out member 70 is at rest above the lower limit position (for example, at a raised position) due to frictional force, the push-out member 70 can be forcibly lowered by the push-out member biasing portion 73 in association with the descent of the cylinder 22. In particular, since the locking portion 222B is applied as the push-out member biasing portion 73 provided on the cylinder 22, the push-out member 70 can be forcibly lowered with a simple configuration of only locking the locking portion 222B to the push-out member 70. Furthermore, since the elastic portion 713 with which the locking portion 222B locks is applied as the push-out member biasing portion 73 provided on the push-out member 70, the elastic portion 713 can be elastically deformed and the lock of the locking portion 222B to the push-out member 70 can be released with a simple configuration of only lowering the cylinder 22 in one direction.

[0096] On the other hand, when the pushing member 70 is lowered by its own weight until it contacts the hot water receiving portion 221B, the pushing member 70 is lowered by its own weight with the descent of the cylinder 22 until the supported portion 711 is supported by the support portion 522C of the pushing member holding portion 522. When the cylinder 22 is further lowered, the elastic portion 713 is elastically deformed with the downward movement of the contact position between the locking portion 222B and the upper inclined surface 714A, and the locking portion 222B is positioned below the upper inclined surface 714A, as in the case where the pushing member 70 is stationary at the raised position due to frictional force. When the descent of the cylinder 22 is completed, the upper surfaces of the containing member 222 and the piston 23 are positioned at approximately the same height as the lower ends of the pushing body 72 and the pushed-up portion 715.

[0097] Next, the control unit 90 drives the moving motor 561 to move the moving member 51 to the forward position while removing the dregs C1 on the piston 23 (step S7 (see FIG. 16)). During the period from time T12 after a predetermined time has elapsed from time T11 to time T13 (see FIG. 15), the moving motor 561 rotates the operating member 562, for example, 180° counterclockwise in a plan view from the state shown in FIG. 18. When the operating member 562 rotates, the switch changeover recess 564 rotates backward and the crank lever 563 rotates forward to draw an arc. With the backward rotation of the switch changeover recess 564, the backward position detection switch 86 switches from on to off. With the forward rotation of the crank lever 563, the lever control unit 55 is pushed forward by the fitting pin portion 563A, and as a result, the moving member 51 moves forward. When the switch changeover recess 564 reaches a position facing the forward position detection switch 85 and the forward position detection switch 85 switches from OFF to ON, the control unit 90 stops driving the moving motor 561. As a result, as shown in Fig. 21, which is a vertical cross-sectional view of the beverage extraction device 1 after the dregs on the piston have been removed, the cap 24 reaches the second position and the movable chute 53 reaches the first position.

[0098] In addition, when the moving member 51 moves forward, the pusher member 70 pushes the scraps C1 on the cylinder 22 forward of the cylinder 22 and removes them by the pusher body 72 moving in contact with the upper surface of the housing member 222. When pushing out the scraps C1, as described above, a gap is provided between the main body member 71 of the pusher member 70 and the front and rear inner circumferential surfaces of the pusher member insertion hole 522B, so that the pusher member 70 is tilted so that the lower end is located rearward of the upper end as shown by the two-dot chain line in FIG. 9 due to the frictional force generated between the scraps C1 and the piston 23 or between the pusher body 72 and the piston 23. In other words, the pusher member 70 is tilted with respect to a line parallel to the insertion direction of the pusher member 70 into the pusher member insertion hole 522B. Therefore, even if an upward biasing force acts on the pusher member 70, the pusher member 70 is prevented from rising in the pusher member insertion hole 522B. As a result, the push-out body 72 is prevented from separating from the storage member 222 during the movement of the push-out body 72, and the amount of scraps C1 that are not removed can be reduced. When the movement of the moving member 51 is completed, the pushed-up portion 715 is supported by the storage member 222.

[0099] In this manner, the dregs C1 are removed by using the pushing member holding portion 522 of the moving portion 50 to hold the pushing member 70 so that it can be raised and lowered relative to the cap 24, and by moving the cap 24 and the pushing member 70 forward with the pushing member 70 lowered. This eliminates the need to provide a standby space for the member holding the pushing member 70 at a position away from the movement path of the cylinder 22, and prevents the horizontal dimension of the beverage extraction device 1 from becoming large.

[0100] Moreover, by moving the movable member 51 forward, that is, by moving the cap 24 from the first position to the second position, the process of pushing out the grounds C1 with the pushing member 70 and the process of making it possible to add the coffee bean powder C0 from the fixed chute 41 to the extraction space 201 can be performed simultaneously. Furthermore, the beverage extraction device 1 is configured to move the movable chute 53 from the third position to the first position by moving the cap 24 from the first position to the second position. Therefore, after the pushing out of the grounds C1 by the pushing member 70 is completed, the beverage extraction device 1 can add the coffee bean powder C0 from the fixed chute 41 to the extraction space 201 via the movable chute 53 by simply raising the cylinder 22, thereby shortening the sales time.

[0101] Furthermore, when the moving member 51 moves forward, the scraping part 14 comes into contact with the underside 241 of the cap 24. If grounds C1 are attached to the underside 241, the grounds C1 are scraped off, and it is possible to prevent the grounds C1 of the previously served coffee liquid from adhering to the underside 241. In particular, when extracting low-pressure extracted (drip-flavored) coffee liquid, the amount of grounds C1 remaining on the underside 241 tends to be greater than when extracting espresso because the grounds C1 contain a lot of water after extraction, and therefore the provision of the scraping part 14 has a significant effect.

[0102] Furthermore, as moving member 51 moves forward, vibration generating protrusion 412A transitions from a state in which it is in contact with a portion of the top surface of moving member 51 that is in front of raw material passing hole 521 to a state in which it is located inside raw material passing hole 521. As moving member 51 subsequently moves forward, vibration generating protrusion 412A transitions from a state in which it is located inside raw material passing hole 521 to a state in which it is in contact with a portion of the top surface of moving member 51 that is rear of raw material passing hole 521.

[0103] Also, before the moving member 51 starts moving forward, as shown in FIG. 18, the restriction of the rise of the piston 23 by the abutment portion 611 is released. When the moving member 51 moves forward from this state and the contact position between the upper end of the link member 622 and the cam 621 moves from the inclined surface of the cam recess 621B to the cam surface 621A, the link member 622 descends against the second biasing force by the link member biasing portion 625. When the link member 622 descends, the contact position between the abutment member 61 and the inclined surface 622B1 moves to the upper side of the inclined surface 622B1, and with the movement of the contact position, the abutment member 61 rotates against the first biasing force by the abutment member biasing portion 624. Due to this rotation, the abutment portion 611 moves in a direction approaching the piston 23. Then, as shown in FIG. 6, the abutment portion 611 located above the piston protruding portion 233 restricts the rise of the piston 23.

[0104] In this way, the restriction control unit 62 transitions from a state in which the restriction of the ascent of the piston 23 by the abutment part 611 is not released to a state in which the restriction is released, in synchronization with the forward movement toward the moving member 51, that is, in synchronization with the movement of the cap 24 from the first position to the second position. Therefore, as will be described later, the beverage extraction device 1 can raise the cylinder 22 relative to the piston 23 to form the extraction space 201 simply by starting to drive the lifting motor 31 after the forward movement toward the moving member 51.

[0105] When the removal of the dregs C1 is completed, the control unit 90 moves the cylinder 22 to the powder receiving position (step S8 (see FIG. 16)). At time T14 (see FIG. 15) after a predetermined time has elapsed since time T13, the control unit 90 starts driving the lifting motor 31 so that the cylinder 22 rises. When the cylinder 22 rises, the abutting portion 611 restricts the rise of the piston 23, so that only the cylinder 22 rises. When the cylinder 22 starts to rise, the lower limit position detection sensor 84 transitions from a detection state to a non-detection state. Then, when the powder receiving position detection sensor 83 transitions from a non-detection state to a detection state at time T15, the control unit 90 stops driving the lifting motor 31. As a result, as shown in FIG. 5 and FIG. 6, the cylinder 22 reaches the powder receiving position and the extraction space 201 is formed. Furthermore, the pushing member 70, whose pushed-up portion 715 is supported by the containing member 222, rises together with the cylinder 22. With the above, the beverage serving process is completed.

[0106] In this way, by configuring the pushing member 70 to rise as the cylinder 22 rises, it becomes unnecessary to provide the beverage extraction device 1 with a configuration having only the function of raising the pushing member 70.

[0107] In addition, since the cap 24 or the movable chute 53 is positioned at the first position by reciprocating the cap 24 and the movable chute 53 back and forth, the gap between the fixed chute 41 and the movable chute 53 can be made extremely small. Furthermore, the gap between the cylinder 22 and the movable chute 53 when the cylinder 22 is positioned at the powder receiving position can be made extremely small. Therefore, when the coffee bean powder C0 is fed into the extraction space 201, the coffee bean powder C0 can be prevented from scattering between the fixed chute 41 and the movable chute 53 and between the movable chute 53 and the cylinder 22. Furthermore, the height dimension of the beverage extraction device 1 can be made smaller than in a configuration in which the cap 24 is fixed above the moving path of the movable chute 53. Therefore, it is possible to provide a beverage extraction device 1 that can appropriately supply the coffee bean powder C0 to the cylinder 22 while preventing the height dimension of the beverage extraction device 1 from increasing. In particular, since the cylinder 22, the fixed chute 41 and the movable chute 53 are configured to be aligned vertically, it is possible to prevent the occurrence of a problem in which the coffee bean powder C0 fed through the fixed chute 41 adheres to the inside of the movable chute 53 and is not supplied to the cylinder 22.

[0108] [Modifications of the embodiment] Needless to say, the present disclosure is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present disclosure. Furthermore, the above embodiments and the modifications described below may be combined in any way as long as they function normally.

[0109] For example, the beverage extraction device 1 may be provided with an ascent restriction unit 65 as shown in Figures 22 and 23, instead of the ascent restriction unit 60 shown in Figure 6 etc. The ascent restriction unit 65 includes a pair of contact members 66 and a pair of restriction control units 67.

[0110] Each abutment member 66 is formed in a rectangular plate shape. One end side in the longitudinal direction of each abutment member 66 is rotatably inserted into a rotation shaft 211A provided on the bottom surface portion 211 of the extraction unit frame 21. A portion on the rotation tip side of each abutment member 66 constitutes an abutment portion 661. The abutment portion 661 approaches the piston 23 as the abutment member 66 rotates, and restricts the rise of the piston 23 by contacting the upper surface of the piston protruding portion 233. Each abutment member 66 is formed with a rotation control slit 662 extending in the longitudinal direction.

[0111] Each of the restriction control parts 67 includes a cam 671 and a link member 672 .

[0112] Each cam 671 is formed on both the left and right side surfaces of the moving base 52. Each cam 671 includes a rear horizontal groove 671A extending from the rear end of the moving base 52 to approximately the center in the front-rear direction, an inclined groove 671B provided in front of the rear horizontal groove 671A, and a front horizontal groove 671C provided in front of the inclined groove 671B. The rear horizontal groove 671A and the front horizontal groove 671C are grooves that extend in the horizontal direction. The rear horizontal groove 671A is formed at a position lower than the front horizontal groove 671C. The inclined groove 671B is a groove that is inclined so that the front end is located higher than the rear end.

[0113] Each link member 672 includes a slide portion 672A and an operation protrusion 672B. The slide portion 672A is formed in a rectangular plate shape and is supported in the same position as the slide portion 622A in the extraction unit frame 21 so as to be slidable in the vertical direction. Each operation protrusion 672B is provided so as to protrude from the center of the surface of the slide portion 672A facing the inside of the extraction unit frame 21 and extend in the vertical direction. An insertion protrusion 672B1 is formed at the upper end of the operation protrusion 672B to be inserted into each groove 671A, 671B, 671C (rear horizontal groove 671A, inclined groove 671B, front horizontal groove 671C) of the cam 671. A lower insertion portion 672B2 is provided at the lower end side of the operation protrusion 672B to be inserted into the rotation control slit 662 of the abutment member 66. An inner inclined surface 672B3 is formed at a portion of the lower insertion portion 672B2 on the inner side of the extraction unit frame 21. An outer inclined surface 672B4 is formed at a portion of the lower insertion portion on the outer side of the extraction unit frame 21. The inner inclined surface 672B3 and the outer inclined surface 672B4 are inclined so that the upper ends are located closer to the inner side of the extraction unit frame 21 than the lower ends. The inner inclined surface 672B3 is formed so that the upper and lower ends are located higher than the upper and lower ends of the outer inclined surface 672B4, respectively.

[0114] 22, in a state where the movable member 51 is in the forward position and the cylinder 22 is in the powder receiving position, the rise restriction portion 65 having the above-mentioned configuration has the insertion protrusion 672B1 of the link member 672 positioned in the rear horizontal groove 671A of the cam 671. In this state, the inner inclined surface 672B3 of the link member 672 contacts the inner peripheral surface of the rotation control slit 662 of the abutment member 66, and the rise of the piston 23 is restricted by the abutment portion 661 positioned above the piston protruding portion 233.

[0115] 22, the insertion protrusion 672B1 of the link member 672 moves from the rear horizontal groove 671A of the cam 671 to the inclined groove 671B, and the link member 672 slides upward with this movement. When the link member 672 slides upward, the outer inclined surface 672B4 of the link member 672 comes into contact with the inner peripheral surface of the rotation control slit 662 of the abutting member 66. When the link member 672 rises with further movement of the moving member 51 backward, the contact position between the outer inclined surface 672B4 and the inner peripheral surface of the rotation control slit 662 of the abutting member 66 moves below the outer inclined surface 672B4, and the abutting member 66 rotates with this movement of the contact position, and the abutting portion 661 moves in a direction away from the piston 23. 23, when the insertion protrusion 672B1 of the link member 672 reaches the front horizontal groove 671C of the cam 671, the abutment portion 661 moves to the side of the piston protruding portion 233, and the restriction on the upward movement of the piston 23 is released. Such an upward movement restricting portion 65 eliminates the need to provide the biasing portion 623 as in the upward movement restricting portion 60, and the beverage extraction device 1 can be easily assembled.

[0116] Although the configuration in which the contact portions 611, 661 are moved in synchronization with the movement of the cap 24 has been exemplified, a drive source for moving the contact portions 611, 661 may be provided separately from the movement motor 561, and the contact portions 611, 661 may be moved without being synchronized with the movement of the cap 24. Furthermore, when a drive source for moving the contact portions 611, 661 is provided separately from the movement motor 561, the contact portions 611, 661 may be moved in synchronization with the movement of the cap 24.

[0117] Although the cams 621, 671 and the link members 622, 672 have been exemplified as a configuration for converting the movement of the cap 24 into the movement of the abutting portions 611, 661, other mechanisms such as a gear mechanism or a rack and pinion mechanism may also be applied.

[0118] Although the abutment portions 611, 661 that restrict the rise of the piston 23 by being positioned above the piston protruding portion 233 have been exemplified, abutment portions that restrict the rise of the piston 23 by contacting the outer circumferential surface of the shaft portion 232 of the piston 23 may also be applied, and in this case, from the viewpoint of increasing the restricting force, it is preferable that the abutment portions contact a plurality of points in the outer circumferential direction of the shaft portion 232. Also, the abutment portions 611, 661 may be positioned above at least one of the front and rear portions of the piston protruding portion 233 to restrict the rise of the piston 23.

[0119] As the cylinder of the present disclosure, the cylinder 22 configured with the cylinder body 221 and the housing member 222 has been exemplified, but a cylinder configured with a single member may also be applied.

[0120] The rise restriction unit of the present disclosure may be applied to a beverage brewing device that does not have a cap 24 and that brews drip-type coffee liquid. The beverage brewing device of the present disclosure may also be a device that brews beverages using ingredients and water. Furthermore, the ingredients for brewing the beverage of the present disclosure may be tea leaves such as black tea, green tea, and oolong tea. [Industrial Applicability]

[0121] The present disclosure is applicable to beverage brewing machines. [Explanation of symbols]

[0122] 1 Beverage extraction equipment 10 Frames 11 Bottom part 12 Left side 13 Right side 14 Scraping section 15 Drive unit holding member 16 Rear piping connector 17 Front piping connector 18 Control section 19 Hot water supply section 20 Extraction part 21 Extraction unit frame 22 cylinders 23 Piston 24 Cap 24A O-ring 24B Coffee liquid extraction part 24C Coffee liquid flow passage 30 Lifting drive unit 31 Lifting motor 31A Motor side pulley 32 Lifting mechanism 33 First drive belt 34 Second drive belt 40 Raw material supply department 41 Fixed Shot 42 Mill motor 50 Cap moving part (moving part) 51 Moving parts 52 Mobile Base 52A Upper front 52B Lower front 52C Upper and lower surfaces 52D Lower bottom surface 53 Movable Chute 54 Cap holder 55 Lever control section 56 Mobile drive unit 60,65 Rise control section 61, 66 Contact member 62,67 Regulatory Control Section 70 Extrusion member 71 Main body parts 72 Extrusion body 73 Push-out member biasing portion 74 Plate washer 75 Screw 80 Detection unit 81 Upper limit position detection sensor 82 Extraction position detection sensor 83 Powder receiving position detection sensor 84 Lower limit position detection sensor 85 Forward position detection switch 86 Reverse position detection switch 90 Control section 91 Memory section 121 Outer slit 201 Extraction space 211 Bottom part 211A Rotating shaft 211B First spring support 211C Second spring support 212 Side part 212A Inner slit 212B Guide part 221 Cylinder body 221A Stopper 221B Hot water inlet 221C Supported part 222 Storage material 222A Through hole 222B Locking part 222C Rear communication groove 222D Side communication groove 222E Residue Guide Section 231 Head 231A O-ring 231B Hot water flow passage 232 Shaft 233 Piston protrusion 241 Bottom surface 321 Elevation shaft 321A No. 1 pulley 321B No. 2 pulley 322 Nut 323 Coupling 323A Shaft insertion hole 323B Support groove 411 Shoot body 412 Shoot base 412A Vibration generating protrusion 511 Guide part 521 Raw material passage hole 521A Notch 522 Push-out member holder 522A Retaining recess 522B Extrusion member insertion hole 522C Support part 551 Lever recess 561 Travel Motor 562 Operating member 563 Crank Lever 563A Mating pin part 564 Switch recess 611,661 Contact part 612 Third spring support 621,671 Cam 621A Cam surface 622A1 Remote position contact part 621B Cam recess 622,672 Link members 622A,672A Slide section 622B,672B Operation protrusion 622B1 Slope 622C Pin section 623 Pressurizing part 624 Contact member biasing part 625 Link member biasing part 662 Rotation control slit 671A Rear horizontal groove 671B Slant groove 671C Front horizontal groove 672B1 Insertion protrusion 672B2 Lower insertion part 672B3 Internal slope 672B4 Outside slope 711 Supported part 712 Aperture 713 Elastic part 714 Hook 714A Upper slope 714B Lower slope 715 Pushed-up part C0 Coffee Bean Powder C1 Scum

Claims

1. An extraction unit having a cylinder and a piston, which extracts a beverage using the ingredient and hot water or water in the cylinder; An ascent regulation unit; a fixed chute fixed above the cylinder for introducing the raw material into the cylinder; A moving part; Equipped with The rise regulating portion is a contact portion configured to be movable toward and away from an outer circumferential surface of the piston; a restriction control unit that restricts the rise of the piston associated with the rise of the cylinder by bringing the abutment portion into contact with the piston, and allows the rise of the piston associated with the rise of the cylinder by moving the abutment portion away from the piston, The extraction unit has a cap that is inserted into the cylinder, and is configured to be able to extract a beverage using the raw material compressed by the piston and the cap in the cylinder and the hot water or the cold water, the moving unit moves the cap between a first position between the fixed chute and the cylinder and a second position different from the first position; the restriction control unit brings the abutment portion into contact with the piston in synchronization with movement of the cap from the first position to the second position, and separates the abutment portion from the piston in synchronization with movement of the cap from the second position to the first position, the restriction control section converts the movement of the cap into the movement of the abutment section to move the abutment section toward and away from the piston, The restriction control section includes a cam that moves integrally with the cap, and a link member that is arranged so as to be reciprocally movable in a predetermined direction in response to the movement of the cam. At least one of the contact portion and the link member is formed with an inclined surface that converts the movement of the link member into the movement of the contact portion. Beverage extraction equipment.

2. the piston has a head portion that rises and falls inside the cylinder, a shaft portion that extends downward from the head portion, and a piston protruding portion that protrudes horizontally from the shaft portion, The restriction control unit is The abutment portion is positioned above the piston protruding portion to restrict the piston from ascending, and the abutment portion is moved away from above the piston protruding portion to allow the piston to ascend.

2. The beverage brewing machine of claim 1.

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