JPH0117214Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] The present invention relates to a coffee brewer with a grinder.

[Technical background of the invention and its problems]

Various types of coffee extractors with grinders have been developed and are in practical use. There are two known types of mills: a thin type and a type in which the beans are crushed using grinding blades that rotate at high speed.

In the above-mentioned grinding blade type, the grinding blades are rotated within a grinding container containing coffee beans, so the problem is how to apply driving force to the grinding blades.

In conventional coffee extractors with mills of this type, rotational force is generally applied from below the grinding blades, as seen in Japanese Patent Publication No. 58-325, for example. In this device, the drive shaft of the crushing blades passes through the center of the filter and extends downward, and is rotated by a motor from below. Therefore, in this case, it is necessary to use a special dedicated filter through which the drive shaft can pass vertically.

In other words, because it is not possible to use a simple, disposable paper filter, there are problems such as having to wash the filter every time it is used, and the coarseness of the filter allows fine coffee particles to get mixed into the coffee liquid. Ta.

In order to solve the above drawbacks, the crushing blades can be rotated from above the filter so that commercially available disposable paper filters can be used, but as mentioned above, in the crushing blade type mill, the crushing blades are inside the crushing container. Because of this, if the drive shaft is placed above, the grinding container cannot be easily attached and detached, making it extremely difficult to use.

[Purpose of invention]

The present invention was developed based on the above circumstances, and its purpose is to make it possible to use disposable filters that are easy to handle, such as paper filters, and to make it possible to attach and detach an extraction unit equipped with a crushing container. Our goal is to provide a coffee brewer with a grinder that is easy to use.

[Summary of the idea]

The gist of the present invention is to provide a main body with a built-in hot water supply mechanism and a motor for driving the grinding blades, an extraction unit detachably attached to the main body and equipped with a coffee bean grinding container and a filter container below the coffee bean grinding container; A power transmission unit is provided, which is detachably attached to the upper part of the main body and above the extraction unit and transmits the rotational force of the motor to the crushing blades. It's what I did.

According to the present invention having the above structure, the extraction unit can be attached to and removed from the main body while the power transmission unit is separated and removed from the main body. For this reason, the upper part of the brewing unit is completely opened and the power transmission unit does not get in the way, and the brewing unit can be easily attached and detached.

In addition, during use, the rotational driving force from the motor can be transmitted to the crushing blades disposed above the filter via a power transmission unit installed across the top of the main body and above the extraction unit. Therefore, it is not necessary to pass the drive shaft of the crushing blade through the filter, and it is not necessary to use a special filter such as a metal mesh. Therefore,
Commercially available disposable paper filters can now be used, making handling much easier. In addition, by using a paper filter, it is possible to prevent fine coffee powder from being mixed into the liquid, and it is possible to obtain a delicious coffee liquid without cloudiness.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

1 in the figure is the main body. The main body 1 includes a synthetic resin housing 3 with a support base 2 on the lower front surface, a water storage tank 4 detachably attached to the back of the housing 3, and a hot water supply mechanism 5 built into the housing 3.
It is also provided with a motor 6 for driving the crushing blades. And on the top of housing 3,
A mounting recess 7 whose top and front surfaces are open is formed, and a locking portion 8 is formed at the front surface slightly below the recess 7.

The output shaft of the motor 6 passes through the bottom wall of the mounting recess 7, and a joint 9 is connected to the penetrating end.

The hot water supply mechanism 5 includes a heating block 1 provided with a heater.
A check valve 13 is provided between the water supply pipe 11 and the water storage tank 4. The heating block 10 is disposed inside the support base 2, and a coffee liquid storage container 14 is placed on its upper surface. The tip of the hot water supply pipe 12 is connected to a joint pipe 15 made of a heat-resistant sealing material.
5 is attached by penetrating the bottom wall of the attachment recess 7.

An extraction unit 16 is detachably attached to the locking portion 8 from above. This unit 16 includes a coffee bean grinding container 18 equipped with a lid 17 and a filter container 19 fitted under the container 18. The coffee bean grinding container 18 integrally has a receiving part 21 that is bent downward from a horizontal extension part 20.
is detachable from the locking portion 8, and the extraction unit 16 is supported on the front surface of the main body 1 by engagement therewith. Further, inside the coffee bean grinding container 18, a grinding particle size adjusting member 22 having a large number of through holes is attached, and a hot water diffusion member 23 is arranged below this member 22. An introduction pipe 23a of the hot water diffusion member 23 is connected to a joint pipe 24. This joint pipe 24 is made of a heat-resistant sealing material and is attached to pass through the extending portion 20 .

The filter container 19 can be attached to and detached from the container 18, and the attachment and detachment is achieved by engaging and disengaging an engaging portion 25 provided on the filter container 19 and an engaging portion receiver 26 provided on the container 18. This filter container 19 has an outflow hole 27 in the bottom wall. Further, a disposable commercially available paper filter 28 is housed in the filter container 19.

A crushing blade 30 is arranged inside the coffee bean crushing container 19. In this embodiment, the rotary shaft 31 of the crushing blade 30 is rotatably attached to the lid 17, so that the blade 30 can be attached to the container 1.
9 is shown. A joint 32 is connected to the upper end of the rotating shaft 31 of the crushing blade 30.

A power transmission unit 33 is removably attached to the upper part of the main body 1 and above the extraction unit 16, and the rotational force of the motor 6 is transmitted to the crushing blades 30 via this unit 33. . This power transmission unit 33 houses an input rotary body 35 and an output rotary body 36, which are made of, for example, a pulley, spaced apart from each other in a synthetic resin case 34 whose one end side is fitted into the mounting recess 7. A configuration is provided in which both of these rotating bodies 35 and 36 are connected by a transmission body 37 such as a belt. A rotating shaft of the input rotary body 35 projects below the case 34, and a joint 38 that is detachably connected to the joint 9 is connected to the lower end thereof. Furthermore, the output rotating body 36
The rotating shaft of is also protruded from the lower side of the case 34,
At its lower end is a joint 39 that can be connected to and detached from the joint 32.
are connected. Further, in this embodiment, a communication pipe 40 is attached to the case 34. Both ends of the communication pipe 40 are respectively projected to the lower side of the case 34, and are adapted to be inserted into and removed from the joint pipes 15 and 24 as the power transmission unit 33 is attached and removed.

Further, a cover 43 is attached to the upper surface of the main body 1 via a hinge 42 so as to be openable and closable. This cover 43 is used to improve the appearance and to more effectively prevent the unit 33 from moving. By engaging the movable claw 44 with the fixed claw 45 protruding from the upper surface of the main body 1, It is designed to be held by covering it. Note that the movable claw 45 is connected to a spring 46.
By pushing in against the urging force of the spring 46, the engagement with the fixing claw 45 is released. Note that a protrusion 47 is provided on the inner surface of the cover 43, and this is adapted to press a safety switch 48 when the cover 43 is closed. The safety switch 48 has a normally open contact inserted in series with the electric circuit of the motor 6.

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

First, after pressing the movable claw 44 to disengage it from the fixed claw 45 and opening the cover 43, the power transmission unit 33 is lifted up, separated from the main body 1 and the extraction unit 16, and removed from above.
In this state, the extraction unit 16 is lifted upward and removed from the main body 1, the paper filter 28 is stored in the filter container 19, and the coffee bean grinding container 18 is fitted into this container 19. Further, the lid 17 is opened, coffee beans are placed on the particle size adjusting member 22, and the lid 17 is closed.

Then, attach the receiving part 21 of the extraction unit 16 to the main body 1.
The extraction unit 16 is attached to the front side of the main body 1 by being engaged with the engagement portion 8 from above. Next, the previously removed power transmission unit 33 is installed from above so as to span the main body 1 and the extraction unit 16. In this case, the extraction unit 16 is attached to the mounting recess 7
Positioned by. By this attachment, the joints 9 and 38 are brought into meshing engagement, and the joints 32 and 39 are brought into meshing engagement with each other. At the same time, both ends of the communication pipe 40 are inserted and connected to the joint pipes 15 and 24, respectively, so that the hot water supply pipe 12 and the hot water diffusion member 23 communicate with each other. After this, cover 43
to keep the safety switch 48 closed. Note that the water storage tank 4 is filled with water, and the coffee liquid storage container 14 is placed on the support stand 2.

When the above preparations are completed, a main switch (not shown) is turned on to drive the motor 6 for a certain period of time, and then the motor 6 is stopped and the heater of the heating block 10 is automatically energized. Then, first, the input rotating body 35 receives the rotational force of the motor 6,
Since this rotates the output rotating body 36 via the transmission body 37, the rotational force of the motor 6 is ultimately transmitted to the crushing blades 30 via the power transmission unit 33.
Therefore, the coffee beans are ground by the rotation of the blades 30, and when the coffee beans become smaller than a predetermined particle size, they are dropped onto the paper filter 28 through the through holes of the particle size adjusting member 22. Next, due to the heat generated by the heater, the water that has passed from the water storage tank 4 through the water supply pipe 11 is heated in the heating block 10 and flows out to the hot water diffusion member 23 through the hot water supply pipe 12 and the communication pipe 40 due to boiling pressure. The coffee powder is dripped from this member 23 onto the coffee powder on the paper filter 28. The extracted coffee liquid passes through the outflow hole 27 and is stored in the coffee liquid storage container 14, and when a predetermined amount of water in the water storage tank 4 is used up, the extraction ends.

After extraction, to discard the paper filter 28 and slag, etc., use the power transmission unit 33 as in the preparation described above.
After opening and removing the cover 43, the extraction unit 16 is removed from the main body 1, and the paper filter 28 is discarded from the filter container 19 together with the dregs.

Although the above-described embodiment is constructed as described above, the power transmission unit 33 of the present invention may be constructed as shown in FIG. 3.

In other words, the power transmission unit 33 shown in FIG.
The input rotating body 35 and the output rotating body 36 are configured as gears instead of pulleys, and the transmission body 37 is configured as an intermediate gear instead of a belt.

In addition, as shown in Fig. 3, in the present invention,
The output rotating body 36 is directly connected to the upper end of the rotating shaft 31 of the crushing blade 30, and the joint used in the above embodiment is omitted between the crushing blade 30 and the output rotating body 36, resulting in a simple structure. It may also be carried out.
In this case, the annular wall 3 is provided on the bottom surface of the case 34.
The coffee bean grinding container 18 is covered by a portion surrounded by a projecting portion 4a, and the lid used in the above embodiment is omitted.

Further, in the embodiment described above, the hot water supply pipe 12 and the hot water diffusion member 23 are communicated and separated as the power transmission unit 33 is attached and detached, but the present invention is not limited to this. For example, the inlet side of the introduction pipe 23a of the hot water diffusion member 23 is formed to face downward, and this downward end is connected to the joint pipe 15 when the extraction unit 16 is attached to and removed from the main body 1.
The communicating pipe and the joint pipe of the extraction unit in the above embodiment may be omitted so that the extracting unit can be directly inserted into and removed from the extraction unit.

In addition, when implementing the present invention, unless it is contrary to the gist of the invention, the main body, hot water supply mechanism, motor, extraction unit, coffee bean grinding container, filter container,
Specific structure of crushing blades, power transmission unit, etc.
It goes without saying that the shape, position, etc. are not limited to the one embodiment described above, and can be configured and implemented in various ways.

[Effect of the invention] Since the present invention described above has the configuration described in the above-mentioned utility model registration claims, it is possible to transmit the power of the motor to the grinding blades arranged from above in the coffee bean grinding container. The unit can be attached to and detached from the main body and the brewing unit, and the brewing unit can be attached to and detached from the main body while the power transmission unit is separated and removed from the main body. Therefore, the power transmission unit does not get in the way at all when attaching and detaching the brewing unit, making it possible to provide a coffee extractor that is easy to use. Along with this, disposable filters such as paper filters can be used, so
This has the effect of simplifying handling.

[Brief explanation of drawings]

Figures 1 and 2 show one embodiment of the present invention, with Figure 1 being a vertical sectional side view with the cover open and the power transmission unit separated, Figure 2 being a partially exploded perspective view, and Figure 3 being a partially exploded perspective view. The figure is a longitudinal sectional side view showing another embodiment of the power transmission unit. 1...Main body, 5...Water supply mechanism, 6...Motor,
8... Locking part, 9, 32, 38, 39... Joint,
16...Extraction unit, 17...Lid, 18...Coffee bean grinding container, 19...Filter container, 28
...Paper filter, 30...Crushing blade, 33...Power transmission unit, 35, 36...Rotating body, 37...
...Transmission body.

Claims (1)

[Scope of utility model registration request] A main body with a built-in hot water supply mechanism and a motor for driving the grinding blades, an extraction unit detachably attached to the main body and equipped with a coffee bean grinding container and a filter container below the coffee bean grinding container; A power transmission unit is provided, which is detachably attached to the upper part of the main body and above the extraction unit and transmits the rotational force of the motor to the crusher blades. coffee brewer.