JPS5916030Y2 - "Ko" "Hi" making machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coffee making machine in which a main case is provided with an extraction case having a cutter for crushing coffee beans and a filter for applying a coffee liquid source.

This type of coffee making machine has a drive motor disposed in the main body case, a brewing case located above the drive motor, and a rotary drive unit rotated by the drive motor connected to the bottom of the brewing case. It is made to penetrate and protrude into the extraction case, and a cutter is attached to the protruding end of the cutter, and a filter is provided inside the extraction case so as to be located below the cutter, and the cutter crushes coffee beans. After that, the coffee liquid is extracted by pouring hot water into the extraction case.

Conventionally, a seal member is interposed at the penetration part of the rotary drive unit at the bottom of the brewing case to prevent water leakage, but the seal member wears out due to contact with the rotary drive unit and the coffee beans are crushed by the cutter. It is susceptible to deterioration due to the vibrations of time, and there was a problem that the sealing effect against water leakage was insufficient.

The present invention was made in view of the above circumstances, and its purpose is to provide a coffee making machine that can reliably prevent water from getting wet from the brewing case without problems of wear and deterioration of the sealing member. .

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a main body case, which has a motor storage chamber 3 formed above the left half of the flat base portion 2 in the figure, and a storage chamber 5 surrounded by a wall 4 above the motor storage chamber 3. A water storage tank 6 is further formed on the right side of the storage chamber 5, that is, above the right half of the base portion 2.

The bottom of the storage chamber 5 has a slope that gradually descends toward the right end, and a hole 7 is formed at the lowest part of the slope, and a bearing hole 8 is formed approximately in the center of the bottom.

Reference numeral 9 denotes a drive motor, which is disposed within the motor storage chamber 3 such that the rotating shaft 10 projects into the storage chamber 5 through the bearing hole 8.

Note that 11 is a seal, which is held between the bearing hole 8 and the rotating shaft 10 by a support 12 provided on the upper surface of the drive motor 9 so as to seal the space therebetween.

Reference numeral 13 designates a mill container in which a substantially inverted conical bottom wall portion 15 is integrally molded into the lower opening of a cylindrical peripheral wall portion 14, and a shaft insertion tube 16 is formed protruding approximately at the center of the bottom wall portion 15. A large number of liquid passage ports 17 are formed in a portion other than the shaft insertion tube 16, and a filter 18 having a substantially inverted conical shape similar to the bottom wall portion 15 is mounted on the entire surface of the portion.

A cutter 19 is housed in the mill container 13, and the cutter 19 has an inclined shape that gradually rises toward the outer periphery, and the tip thereof is directed upward. An open-shaped boss portion 20 is positioned within the shaft insertion tube 16.

Thus, such an aluminum container 13 is stored in the storage chamber 5, and when stored, the rotation shaft 10 of the drive motor 9
A boss portion 20 in the shaft insertion tube 16 is fitted into the penetrating projecting end of the cutter 19 so that the cutter 19 can rotate integrally therewith.

Reference numeral 21 denotes a container serving as a receiving portion that constitutes an extraction case together with the mill container 13, the bottom of which forms an inclined surface along the bottom of the storage chamber 5, and a discharge port 22 is formed at the bottom of the container. A shaft insertion tube 23 serving as a water shield is formed in a raised manner approximately at the center.

Therefore, such a receiver 21 is used as the mill container 13 before storage.
The mill container 1 is fitted into the fitting protrusion 15a of the bottom wall portion 15 of the mill container 1.
3 is housed in the storage chamber 5, and thus the receiver 21 is located between the bottom wall 15 of the mill container 13 and the bottom of the storage chamber 5.

In this state, the discharge port 22 faces the outside of the storage chamber 5 through the hole 7, and the boss 20 is located on the outer periphery of the shaft insertion tube 23.
A water-shielding cylinder 20a, which is a water-shielding body, is formed on the outer periphery of the flat end of the pipe.

In this case, the water-shielding tube 20a covers the upper end opening of the shaft insertion tube 23 with a predetermined gap, and its lower end covers the shaft insertion tube 23.
It overlaps the upper end of the wall with a predetermined gap, forming a so-called double wall structure.

Incidentally, 24 is a reservoir placed on the upper surface of the right half of the base portion 2 of the main body case 1, and its mouth is located below the discharge port 22.

Reference numeral 25 denotes a discharge pipe of the water heater, which is located above the mill container 13 . It has a structure in which hot water is heated by a heater provided inside the half, and then hot water is discharged from the discharge pipe 25.

26 is a lid provided on the top of the mill container 13.

Next, the operation of the above configuration will be explained.

First, when coffee beans are placed in the mill container 13 and the drive motor 9 is started, the cutter 19 rotates via the rotary shaft 10 and the boss portion 20, and the coffee beans are ground into coffee powder.

At this time, if the amount of coffee beans is small, even if the coffee powder crushed by the cutter 19 is scattered toward the outer circumference due to the centrifugal force of the rotation of the cutter 19, it is not attached to the bottom wall 15 of the mill container 13. Since the filter 18 has a substantially inverted conical shape, the coffee powder is transferred to the center of the filter 18 (the cutter 19
When there is a large amount of coffee beans, the coffee powder initially accumulates at the center of the filter 18, as in the case of a small amount, and then It gradually begins to accumulate toward the outer circumference.

When this crushing operation is completed, the drive motor 9 is stopped and the heater of the hot water supply device is made to generate heat.

Then, the water in the water storage tank 6 is turned into hot water and discharged into the discharge pipe 25.
The molten metal is discharged into the mill container 13 through the pouring hole 26 a of the lid 26 .

Then, the hot water permeates into the coffee powder and becomes coffee liquid, which is filtered by the filter 18 and flows through the liquid passage port 1.
Drop through 7.

This coffee liquid is received by a receiver 21, drips along the bottom of the receiver 21 from a discharge port 22 into a reservoir 24, and is stored there.

As described above, according to this embodiment, the shaft insertion tube 23 is formed as a protuberance on the bottom of the receiver 21, and the shaft insertion tube 23 is further placed over the boss portion 20, which is the rotational drive portion, with a predetermined gap. forming a water-shielding cylinder 20a that partially overlaps with a predetermined gap;
Therefore, since the water-shielding tube 20a and the shaft insertion tube 23 are arranged as a pair as a water-shielding body, it passes through the filter 18 and the receiver 2
1 can be reliably prevented from leaking from the shaft insertion tube 23 into the storage chamber 5, that is, water leakage.Moreover, since the shaft insertion tube 23 and the water-shielding tube 20a are in a non-contact state, , unlike conventional seal members, there is no deterioration due to wear or vibration.

Further, according to this embodiment, since the bottom wall portion 15 of the mill container 13 and the filter 18 attached thereto are formed in a substantially inverted conical shape, when the coffee beans are in a relatively small amount, the cutter 19 can crush and generate the coffee beans. A comparatively larger amount of ground coffee is accumulated in the center of the filter 18 than in the outer periphery of the filter 18, and therefore, it is discharged from the discharge pipe 25 through the pouring hole 26a of the lid 26 and is supplied in large quantities to the center. The hot water, which tends to be pulverized by the cutter 19, is effectively permeated into the coffee powder, making it possible to produce delicious coffee liquid. After being accumulated in the center of the filter 18, it is gradually deposited on the outer periphery, and this filter 18 has a substantially inverted conical inclined shape, which makes contact with coffee powder easier than, for example, a flat filter. Since the surface area is large, the layer will not be too thick, so the hot water will easily pass through the coffee powder, so it will not take long to extract the coffee liquid, and the hot water will flow from the top of the mill container 13 There is no overflow.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with appropriate modifications within the scope of the invention.

As explained above, in the present invention, a cylindrical water shield is provided in a raised manner on the penetrating portion of the rotary drive part in the receiving part of the extraction case, and the lower end of the rotary drive part is connected to the outer periphery of the upper end of the water shield. Since the water shielding body is provided with a predetermined gap and wraps, it is possible to provide a coffee making machine that can reliably prevent water leakage from the extraction case without problems of wear and deterioration.

[Brief explanation of the drawing]

The figure is a longitudinal sectional side view showing an embodiment of the present invention. In the figure, 1 is the main body case, 9 is the drive motor, 10 is the rotating shaft, 13 is the mill container (extraction case), 18 is the filter, 1
9 is a cutter, 20 is a boss part (rotation drive part), 20a is a water-blocking tube (@water body), 21 is a receiver (extraction case),
23 indicates a shaft insertion tube (water shield).

Claims (1)

[Scope of utility model registration request] an extraction case provided in the main case and having a receiving part at the bottom; a drive motor that is provided in the main body case and rotates a rotational drive part that passes through the receiving part of the extraction case; A cutter rotated by a drive part, a filter located below the cutter and provided in the extraction case, and a cylinder provided in a raised manner at a penetrating portion of the rotation drive part in a receiving part of the extraction case. A coffee making machine comprising: a water shielding body having a shape of cylindrical shape; and a cylindrical water shielding body provided in the rotary drive portion, the lower end of which wraps around the outer periphery of the upper end portion of the water shielding body with a predetermined gap.