JPS6330353Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a coffee making machine that is equipped with a mill mechanism and that produces coffee liquid by supplying hot water from a hot water supply mechanism to ground coffee powder.

[Technical background of the invention]

Conventionally, there are two types of coffee making machines of this type.One type has a motor storage chamber with a mill mechanism motor installed inside the lower half of the main body, a bottle mounting stand, and a motor storage chamber. A case storage chamber is formed above the chamber, and when extracting coffee liquid, a case for both a mill and coffee extraction is stored in the case storage chamber, and the coffee beans put into the case are first attached to the rotating shaft of the motor. The coffee liquid is extracted by grinding the coffee using a cutter attached to the machine and then supplying hot water from the hot water supply mechanism. A chamber and a bottle mounting table are formed, and a mill case is removably placed above the motor storage chamber, and coffee beans placed in the case are crushed by a cutter driven by a motor.
After that, the mill case is removed and the coffee powder is transferred to the extractor placed on the bottle on the bottle holder, and hot water from the hot water supply mechanism is supplied to the coffee powder stored in the extractor to create coffee liquid. This is a configuration that extracts .

[Problems with background technology]

However, in each of the above configurations, the bottle mounting stand and the relatively large motor storage chamber are arranged side by side in the main body, so the overall size is relatively large and the installation area of the main body is large. It had the disadvantage of becoming.

[Purpose of invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a space-saving coffee making machine that can be downsized to reduce the installation area of the main body, and can be used even on a narrow table without getting in the way.

[Summary of the idea]

In this invention, the motor is installed in the upper part of the main body, and the mill case is attached to and detached from the upper part of the main body so that the motor is housed inside and a space for the mill is formed between the mill case and the motor. a cutter is rotatably pivoted to the inner bottom of the mill case so that the cutter is detachably connected to the rotating shaft of the motor by attaching the mill case to the main body; An extractor for extracting coffee liquid and a bottle for storing coffee liquid are installed vertically below the mill case,
By using the inside of the mill case as a motor storage chamber, there is no need to provide a motor storage chamber next to the bottles, and when the mill case containing coffee beans is attached to the main body, the coffee The feature is that the beans can be easily installed without getting in the way.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a main body of a coffee making machine made of plastic, and the main body 1 has a substantially inverted U-shape as a whole, and has a bottle mounting stand 2 at the bottom and a thin water storage tank 3 on the left side. A flat support part 4 is formed at the top to face the bottle mounting table 2. Reference numeral 5 denotes a hot water supply mechanism configured by installing a sheathed heater 7 and a heating tube 8 in parallel in a heating plate 6, and the heating plate 6 is connected to a heat transfer plate 2 mounted on the bottle mounting table 2.
a It is arranged in close contact with the lower surface. Then, one end of the heating pipe 8 is extended upward and connected to a water outlet (not shown) of the water storage tank 3 via a check valve 9, and the other end is extended above the one end to form a hot water supply pipe 10. A hot water supply arm 11 is connected to the upper end of this so as to point horizontally to the right. Therefore, main body 1
is an inverted U-shaped reinforcing frame 12 made of metal, for example, extending from the bottle mounting table 2 at the bottom to the support section 4 at the top.
It is reinforced by The reinforcing frame 12 is composed of a bottom plate 12a made of a metal plate and a frame main body 12c made of a metal plate, which is erected on the left side of the bottom plate 12a and has a top plate portion 12b bent at its upper end. 13 is the top plate part 1 of the reinforcing frame 12
It is a disc-shaped lid screwed onto the lower surface of the motor case 14 together with the motor case 14, and a cylindrical elastic member storage portion 13a is provided in the center of the lid 13 to protrude downward. On the other hand, the motor case 14 has a cylindrical container shape with a substantially tapered bottom, and has a cylindrical insertion portion 14a for inserting the motor shaft extending downwardly at the lower end thereof, and a cylindrical tube on the inner surface of the lower portion. A shaped elastic member storage portion 14b is provided to protrude upward. Reference numeral 15 denotes a motor disposed within the motor case 14 and located above the main body 1;
The rotary shaft 15a is arranged to be housed in the motor case 14 via vibration-proof elastic members 16 and 17 stored in both elastic member storage parts 13a and 14b, and the rotating shaft 15a projects downward from the insertion cylinder part 14a of the motor case 14. . A connecting pin 18 is radially pierced through the lower end of the rotating shaft 15a. In addition, 19 is a sealing member fitted into the gap between the rotating shaft 15a and the insertion tube portion 14a. 20 is a roughly cup-shaped mill case;
This mill case 20 has a tapered part 20a that gradually increases in diameter toward the bottom on the peripheral wall near the bottom, and a short cylindrical filter attachment part 21 is attached downward to the lower end of the tapered part 20a. It is installed protrudingly. Further, as shown in FIGS. 2 and 3, the mill case 20 has a small diameter portion 20b formed at its upper end, and protrusions 22 are intermittently protruded around the outer circumference of the upper half of this small diameter portion 20b. It is set up. On the other hand, main body 1
The small diameter part 2 of the mill case 20 is on the lower surface of the support part 4.
Cylindrical mill case support part 2 into which 0b is fitted
As shown in FIG.
A groove 24 extending upward from the lower end and a square hole 25 continuously extending in the circumferential direction from the upper end thereof are formed so as to correspond to each protrusion 22 at the upper end. Such a mill case 20 is connected to the main body 1 by a so-called bayonet engagement means in which the protrusion 22 is inserted into the groove 24 from below and rotated to engage the square hole 25.
It is removably attached to the support part 4 of. In this installed state of the mill case 20, the motor case 14 and the motor 15 are housed in the mill case 20, and there is a mill space between the motor case 14 and the mill case 20 at the bottom and the surrounding area. A is formed. On the left side of the filter mounting portion 21 in the figure, there is a notch 2 that opens downward.
6, and the hot water supply arm 11 is introduced into the filter attachment part 21 through this notch 26. Reference numeral 27 denotes a filter body constituting the bottom part of the mill case 20, and as shown in FIG. and annular rib 3
For example, a relatively coarse metal mesh filter 33 is mounted on the upper surface of the frame 32, which is constructed by integrally connecting two parts.
The frame body 32 is attached by insert molding or by welding the frame body 32. Such a filter body 27 is constructed by screwing a male threaded part 28a carved on the outer periphery of the outer frame 28 into a female threaded part 21a carved on the inner periphery of the filter attachment part 21 of the mill case 20. It is attached to the bottom of the mill case 20. 34
is a cutter placed in the mill space A,
The cutter 34 is composed of a plastic boss 35 having a cylindrical upper half, for example, and a cutter blade 36 embedded and fixed in the upper part of the boss 35 by insert molding. Reference numeral 37 denotes a metal shaft portion whose upper portion is embedded and fixed in the lower part of the boss portion 35 of the cutter 34 by insert molding, and a small diameter male screw portion (not shown) is carved in the lower end portion of this shaft portion 37. On the other hand, reference numeral 38 denotes an annular support fitting embedded and fixed to the inner periphery of the upper end portion of the cutter support portion 29 by insert molding or the like. Therefore, thrust washer 3
9 inserted into the support fitting 38 from above the cutter support part 29, the thrust washer 40 is inserted into the shaft part 37 from below, and the thrust washer 40 is inserted into the male threaded part of the shaft part 37. By inserting a large diameter washer 41 to prevent the cutter 34 from coming off and tightening and fixing it with a nut 42, the cutter 34 is attached to the filter body 27.
It is pivotally connected to the cutter support part 29 in a manner that prevents it from coming off. In this installed state of the cutter 34, the cylindrical portion 35 of the upper half, which is the upper end of the boss portion 35,
The upper end a is located a predetermined height above the upper surface of the filter 33, which is the inner bottom surface of the mill case 20. 43
is a connecting portion provided at a portion corresponding to the inner bottom of the cylindrical portion 35a of the boss portion 35 of the cutter 34, and this connecting portion 43 is connected to a shaft insertion hole 43a formed corresponding to the rotating shaft 15a of the motor 15. This shaft insertion hole 4
A pair of grooves 43b are formed on the outer peripheral portion of 3a to correspond to the connecting pins 18 and extend in the vertical direction.
It is composed of. 1, when the mill case 20 is attached to the upper part of the main body 1, the rotating shaft 15a of the motor 15 and the connecting pin 18 are fitted into the shaft insertion hole 43a and the groove 43b, respectively. The rotating shaft 15a and the cutter 34 are in a connected state. 44
46 is a bottle with a handle 45 placed on the bottle mounting table 2; 46 is an extractor placed on the top opening of the bottle 45;
7 is formed. 48 is a paper filter placed inside the extractor 46. Reference numeral 49 denotes a safety switch provided on the left side inside the support portion 4 of the main body 1. This safety switch 49 is connected in series with a manual operation switch (not shown) when the motor 15 is energized. As shown in the figure, when the operator 49a made of a leaf spring is inserted into the square hole 25 of the mill case support part 23 and the mill case 20 is set correctly, the protrusion 22 that engages in the square hole 25 is inserted. It is configured to be turned on when the operator 49a is pressed and displaced. Further, the operation switch is provided so as to be switchable between mill operation, in which the motor 15 is energized, and hot water supply, in which the sheathed heater 7 of the hot water supply mechanism 5 is energized.

Next, the operation of the above configuration will be explained. When producing coffee liquid, first, the bottle 44 together with the extractor 46 is taken out from the bottle mounting table 2, and then the mill case 20 is removed from the support part 4. Then, the shaft insertion hole 43a and the groove 43b are removed from the rotating shaft 15a of the motor 15 and the connecting pin 18, respectively, and the coupling between the rotating shaft 15a and the cutter 34 is released. Then, coffee beans are put into the mill case 20 which has been removed from the main body 1. At this time, care must be taken to prevent coffee beans from entering the cylindrical portion 35a of the boss portion 35. After that, the mill case 20 is placed over the outside of the motor 15 from below, and the protrusion 22 is attached to the mill case supporting section 2 so that the notch 26 of the filter attachment section 21 is loosely engaged with the hot water supply arm 11.
3 into the groove 24, and then insert the mill case 20 into the mill case 20.
is attached to the mill case support part 23 by rotating the protrusion 22 to engage the square hole 25. In the process of attaching the mill case 20 to the main body 1 in this way, the shaft insertion hole 43a and the groove 43b of the cutter 34 are fitted into the rotating shaft 15a and the connecting pin 18 of the motor 15, respectively, so that the cutter 34 is connected to the motor. 15 rotation shaft 15a.

By the way, a configuration in which a cutter is fitted to the lower end of the rotating shaft 15a of the motor 15 is conceivable, but in this case, coffee beans are stored in the mill case and when the mill case is attached to the main body. Since the coffee beans hit the cutter during the process, the mill case must be moved while being installed so that the cutter pushes the coffee beans apart and sinks into the coffee beans, making the installation process cumbersome and requiring the removal of the mill case. In this situation, the cutter is exposed, which poses a safety problem.

However, in this embodiment, the cutter 34 is pivotally attached to the filter body 27 of the mill case 20, and the cutter 34 and the rotating shaft 15a of the motor 15 are connected removably when the mill case 20 is attached. and the cylindrical part 3 of the boss part 35
Since the upper end of 5a is positioned above the filter 33 by a predetermined height, even if the coffee beans are stored in the mill case 20, if the coffee beans are of a normal amount, the coffee beans stored up to the top of the cutter 34 will not reach the top of the cutter 34. There is no possibility of the coffee beans entering the cylindrical part 35a and covering the connecting part 43, and therefore the coffee beans can be easily mounted without getting in the way of mounting the mill case 20. Further, even if the motor 15 is energized and rotates due to a malfunction when the mill case 20 is removed, there will be no safety problem since the cutter 34 has been removed from the rotating shaft 15a. Now, with the mill case 20 attached, the operator 49a of the safety switch 49 is pressed by the protrusion 22 of the mill case 20, and the safety switch 49 is turned on. Further, the hot water supply arm 11 is inserted into the filter mounting portion 21 through the cutout portion 26 of the filter mounting portion 21 . After placing the paper filter 48 inside the extractor 46, the extractor 4
6 and the bottle 44 on the heat transfer plate 2 of the bottle mounting table 2.
Place it on a. On the other hand, a predetermined amount of water is stored in the water storage tank 3 from a water supply port (not shown). When the operation switch is set for mill operation, the motor 15 is energized, the cutter 34 rotates, and the coffee beans in the mill case 20 are ground. During this grinding, the coffee beans or ground coffee powder tend to be pushed upward to the outer periphery by the rotation of the cutter blade 36, and the coffee beans or ground coffee take on an inverted parabolic shape at the bottom of the mill case 20. Therefore, the motor case 14 (motor 1
Even if 5) is stored, there is no risk that this will adversely affect the grinding of coffee beans. The coffee powder pulverized to a predetermined particle size by this mill operation passes through the filter 33 and naturally falls into the extractor 46. When all the coffee powder has fallen into the extractor 46, the operating switch is switched to hot water supply, and the sheathed heater 7 of the hot water supply mechanism 5 is energized to generate heat. Water supplied into the heating tube 8 is heated to generate hot water. This hot water then rises up the hot water supply pipe 10 due to boiling pressure and drips from the hot water supply arm 11 onto the coffee grounds in the extractor 46. The dropped hot water passes through the coffee powder and paper filter 48 and is extracted as coffee liquid, flows out from the extraction port 47 and is stored in the bottle 44. After extracting the coffee liquid in this way, the bottle 44 together with the extractor 46 is taken out from the bottle mounting table 2, the extractor 46 is removed from the bottle 44, and the coffee liquid in the bottle 44 is poured into coffee cups for drinking. . In addition, the wet coffee powder in the extractor 46 after extraction is filtered through the paper filter 4.
You can easily clean it by throwing it away.

Thus, according to the above configuration, the mill case 2
0 is attached to the upper part of the main body 1, and the motor case 14 (motor 15) is arranged in the mill case 20 so as to form the mill space A. There is no need for a separate motor storage chamber, and the mill case 2
Since the bottle 44 and the extractor 46 are placed below the bottle holder 2 on the bottle mounting table 2, it can be made compact, and the installation area of the main body 1 can be reduced, resulting in space saving. obtain.
The cutter 34 is pivotally attached to the inner bottom of the mill case 20, and the mill case 20 is attached to the main body 1, so that the cutter 34 is connected to the rotating shaft 15a of the motor 15, and the boss Since the upper end of the cylindrical part 35a of the part 35 is positioned above the filter 33 by a predetermined height, coffee beans do not get in the way, unlike a structure in which the cutter is attached to the rotating shaft of the motor. The mill case 20 can be easily attached to the main body 1 without any trouble. Moreover, when the mill case 20 is removed, the cutter 34 also comes off the rotation shaft 15a of the motor 15, so in the unlikely event that the motor 15 breaks down, Safe even when energized. Further, when cleaning the mill case 20, the cutter 34 can also be cleaned at the same time, and the cutter 34 can be kept clean at all times. Furthermore, in this embodiment, a filter 33 is provided at the bottom of the mill case 20 to allow coffee powder that has been ground to a predetermined particle size to fall naturally into the extractor through the filter 33. There is no need for any special operation to transfer the liquid from the case 20 into the extractor 46. In addition, the motor 15 is
Since the rotary shaft 15a is installed in the mill case 20, which is located above the extractor 46 that receives the supply of hot water and has no risk of moisture intrusion, in such a way that it protrudes downward, there is little need to consider waterproofing. Furthermore, since the sealing member 19 for preventing the intrusion of coffee powder is almost never buried in the coffee powder, a simple and inexpensive structure can be used, and the cost can be reduced and the service life can be extended. High reliability can also be achieved.

In this embodiment, the bottom part of the mill case 20 is constituted by a filter body 27, and the filter 3
Although the coffee powder is dropped into the extractor 46 through the mesh in No. 3, the present invention is not limited to this. For example, the bottom of the mill case may be configured with a bottom plate with holes, and the holes in the bottom plate may be closed with an opening/closing plate when storing and grinding coffee beans. After grinding the coffee beans, holes may be opened to allow coffee powder to fall into the extractor. Further, although the upper half of the boss portion 35 is made into a hollow cylindrical portion 35a, this may be formed solid.

[Effect of idea]

As is clear from the above description, the present invention has a motor disposed above the main body, a mill case that accommodates the motor therein, and a mill space formed between the motor and the motor. The cutter is removably attached to the upper part of the main body, and the cutter is rotatably pivoted on the inner bottom of the mill case so that the upper end of the boss of the cutter is located above the inner bottom surface of the mill case. The cutter is detachably connected to the rotating shaft of the motor by attaching a mill case to the main body, and an extractor for extracting coffee liquid and a coffee liquid reservoir are provided below the mill case. Since the structure is such that the bottles are stacked one on top of the other, there is no need for a separate motor storage chamber that was installed next to the bottle mounting table, and the so-called "bottle" is placed below the mill case together with the extractor. Since it can be configured vertically, it can be made compact and the installation area of the main body can be reduced to save space, and it can be used even on narrow tables without getting in the way.Moreover, the mill can accommodate coffee beans. To provide a coffee making machine with excellent operability, in which a coffee case can be easily attached without getting in the way of coffee beans when attaching a case to a main body.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall vertical sectional view, FIG. 2 is an exploded perspective view of the main parts,
FIG. 3 is an exploded perspective view of the support part of the main body and the upper part of the mill case. In the figure, 1 is the main body, 5 is the hot water supply mechanism, 15 is the motor, 15a is the rotating shaft, 20 is the mill case, 34
is the cutter, 35 is the boss, 44 is the bottle, 46
is the extractor, and A is the space for the mill.

Claims (1)

[Scope of utility model registration request] A motor disposed in the upper part of the main body, and a coffee beans removably attached so as to store the motor in the upper part of the main body and to form a mill space between the motor and the motor. a mill case rotatably pivoted to the inner bottom of the mill case, the upper end of a central boss portion being located above the inner bottom of the mill case by a predetermined height; A cutter for grinding coffee beans, the boss portion of which is detachably connected to the rotating shaft of the motor, and a cutter for grinding coffee beans, which is provided on a bottle for storing coffee liquid and is disposed together with the bottle below the mill case. A coffee making machine comprising: an extractor for storing coffee powder from a coffee case; and a hot water supply mechanism provided in the main body for supplying hot water into the extractor.