JPH05184467A - Electric coffee maker - Google Patents

Abstract

PURPOSE:To keep mortar blade parts of outer and inner mortars clean by mounting both the mortars on the main body free to load and unload to clean up coffee powder or the like left on the mortar blade parts with ease. CONSTITUTION:An inner mortar 6b of a coffee beans crusher 6 is mounted on a rotating shaft 11 with a lock screw 12 free to load and unload. The outer mortar 6a is removed by two methods. One is that after the removal of the inner mortar 6b, an outer mortar case 22 is rotated in the counterclockwise direction of the rotating shaft 11 and an outer mortar case retaining piece 22a and a hopper retaining piece 16a are released and the other is that a stopper member 24 is removed and the outer case 22 is turned in the same direction as that of rotation of the rotating shaft 11 to release the case retaining piece 22a and the hopper retaining piece 16a. The former is the method for removing the outer mortar 6a and the inner mortar 6b easily in the normal servicing and the latter is the method for removal when the inner mortar 6b is locked by a foreign matters such as wood dust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric coffee brewer capable of attaching and detaching an outer and inner thin of a coffee bean crusher.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Laid-Open No. 62-64434, there is generally known an electric coffee brewing machine having a coffee bean crusher in which only an inner thin layer can be attached and detached. In the conventional electric coffee brewer, the inner stool is removable, and the coffee powder remaining on the thin blade part that is detached from the main body can be cleaned, but the outer stool is fixed and should be cleaned while it is attached. ..

[0003]

In the conventional electric coffee brewing machine, since the outer casing is fixed, it cannot be removed from the main body and it is difficult to clean it. For this reason, there is a problem that coffee powder remains on the outer thin blade portion, resulting in unsanitary condition and poor grinding efficiency. Also, if foreign matter such as wood chips is mixed between the outer thin and inner thin and the movable thin is locked, the two thin teeth will mesh strongly, so it is impossible to remove the inner thin with the detachable structure with only the inner thin. However, there was a problem that the coffee bean crusher could not be reused.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is composed of an outer thin layer and an inner thin layer, and the inner thin layer is rotated by the output of a motor to rotate the coffee beans. With a coffee bean crusher for crushing, the inner wall is detachably attached to the lower end of the rotating shaft with a fixing screw,
On the outer thin case where the outer thin case is fixed, multiple outer thin case locking pieces that are fitting parts with the hopper are provided, and similarly, the hopper locking pieces are also provided on the hopper so that the locking pieces fit together. The outer case has a structure that does not fall from the main body, a stopper member is detachably attached to the hopper, and the side surface of the outer case locking piece is abutted against the stopper member to fix the outer case in the direction of rotation, and the rotary shaft Rotate the outer thin case in the opposite rotation direction to release the outer thin case locking piece and hopper locking piece, remove the thin case, remove the stopper member from the hopper, and rotate the thin case in the rotation direction of the rotating shaft. By doing so, the outer thin case was removed and the outer thin was removed, and both the outer thin and inner thin were detachably attached to the main body.

[0005]

According to the present invention, after the coffee bean crusher is used, both the outer thin layer and the inner thin layer are removed from the main body, and the coffee powder and the like remaining on the thin blade portions of both thin layers are cleaned. In addition, the side surface of the outer case locking piece is abutted against the stopper member to fix the outer case in the rotation direction, and during normal maintenance, the outer case is rotated in the counter-rotational direction of the rotation shaft to remove it. Open the case locking piece and the hopper locking piece and remove the thin case. Furthermore, if foreign matter such as wood chips is mixed in and the light is locked, remove the stopper member from the hopper and rotate the outer light case in the direction of rotation of the rotating shaft to remove the thin case and remove the semi-fixed outer light to remove the foreign matter. do.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric coffee brewer according to an embodiment of the present invention will be described below with reference to FIGS.

In the figure, reference numeral 1 is a main body of an electric coffee brewer in which a water tank 2 is detachably mounted and is made of a soft resin such as ABS resin or PP resin.
A heater unit 4 having a heat retaining function for the coffee pot 3 placed on the upper surface side is incorporated inside the lower end of the. Then, the water in the water tank 2 is guided to the heater unit 4 through a water guiding pipe 5 having a check valve 5a,
The heating temperature is raised here.

On the other hand, above the coffee pot 3 of the main body 1, as shown in FIG. 2, an outer thin wall 6a which forms a fixed thin wall of a coffee bean crusher 6 and an inner thin wall 6b which forms a rotating thin wall are installed. A coffee powder filter 7 that receives the coffee powder generated by the coffee bean crusher 6 is detachably attached. The hot water from the heater unit 4 passes through the rising pipe 8 and the coffee liquid extracted from the tip thereof in the coffee powder filter 7 is passed through the drop prevention valve 9 provided at the lower end of the coffee powder filter 7 to the lower side thereof. It flows down to the coffee pot 3.

The inner thin wall 6b is attached to the motor support 10 mounted in the main body 1 by means of an inner thin fixing screw 12 on a rotary shaft 11 which is rotatably supported vertically.
It is adapted to rotate integrally with the rotary shaft 11. A worm wheel 13 is fixed to the upper part of the rotary shaft 11, and a worm 15a provided on an output shaft 14a of a motor 14 installed substantially horizontally on the upper part of the main body 1 meshes with the worm wheel 13 to form a worm wheel. The rotation of the motor 14 is decelerated and transmitted to the inner thin 6b via a worm gear 15 composed of 15a and a worm wheel 13. Reference numeral 16 is a hopper for charging the coffee beans into the coffee bean crusher 6.

Here, by rotating the motor 14, the inner thin 6b is rotationally driven, and the coffee beans in the hopper 16 are ground between the outer thin 6a and the inner thin 6b to become coffee powder. The powder is directly dropped and stored in the coffee powder filter 7 below the coffee bean crusher 6.

The motor 14 is provided with a movement amount of the output shaft 14a of about 3 mm in the thrust direction.
The worm 15a is fixed to the load side of 4a. Further, in order to constantly urge the amount of movement of the output shaft 14a in the thrust direction to the load, the bearing member 17, the movable member 18 and the urging member (the above-mentioned embodiment) that urges the anti-load side of the output shaft 14a through the load member. In the example, a cylindrical spring) 19 is provided. or,
A changeover switch 20 is arranged behind them, and when the output shaft 14a moves to the anti-load side in the thrust direction, the operating piece 20a of the changeover switch 20 is operated via the bearing member 17 and the movable member 18.

As shown in FIG. 3, the inner thin wall 6b of the coffee bean crusher 6 is detachably attached to the rotary shaft 11 with a fixing screw 12. The fixing screw 12 is provided with a groove and can be easily removed with a coin-shaped object.

The outer thin 6a is fixed to an outer thin case 22 made of a soft resin by an outer thin fixing plate 23. The outer thin case 22 and the hopper 16 are provided with an outer thin case locking piece 22a and a hopper locking piece 16a for fitting at three positions respectively. The mounting structure of the outer thin case 22 and the hopper 16 is such that the outer thin case 22 is pressed against the hopper 16 and the outer thin case 2 moves in the same rotation direction as the rotating shaft 11.
When 2 is rotated, the three outer case locking pieces 22a
The case 22 is engaged with the hopper locking piece 16a to prevent the thin case 22 from falling from the hopper 16. Also, the hopper 16 serves as a stopper in the same rotation direction as the rotating shaft 11.
A stopper member 24 (having a screw shape in the present embodiment) that abuts against the side surface of the outer thin case locking piece 22a is provided at one place to serve as a stopper in the same rotation direction as the rotary shaft 11 of the outer thin case 22.

Next, the operation of this embodiment will be described.

When coffee beans are put into the hopper 16 and the motor 14 is rotated, the inner thin 6b is rotatably driven through the worm gear 15 and is crushed by both thins of the coffee bean crusher 6. At this time, a reaction force generated when the coffee beans are crushed is generated between the two thin boxes, and this reaction force converts the force in the thrust direction of the output shaft 14a by the worm gear 15 to move the output shaft 14a to the anti-load side. As a result, as described above, the operation piece 20a of the changeover switch 20 is operated, and the changeover switch 20 is turned on. or,
When the coffee beans are exhausted, the reaction force generated when the coffee beans are crushed between the two thin bowls of the coffee beans crusher is lost, so that the output shaft 14a is urged toward the load side by the urging member 19 and is switched. Operation piece 20a of switch 20
Is opened, and the changeover switch 20 is turned off. As described above, it is possible to detect the presence / absence of crushed material between the two thin beans of the coffee bean crusher 6.

When coffee beans are crushed by this structure, a force in the same direction as the rotary shaft 11 is applied to the outer thin 6a, which is a fixed thin house, by the reaction force of the coffee beans at the time of crushing. The thin case 22 is fixed. Further, when the coffee beans are not crushed, the outer thin case locking piece 22a and the hopper locking piece 16a are opened by rotating the outer thin case 22 in the counter-rotational direction of the rotary shaft 11 by an easy method. Outer 6a
Can be removed from the body 1.

When the stopper member 24 is removed from the hopper 16, the outer thin case 22 is attached to the hopper 1.
When the outer thin case 22 is rotated in the same rotation direction as the rotary shaft 11 by pressing against the 6, the one end is detached by the outer thin case locking piece 22a and the hopper locking piece 16a.
Although the hopper 16 is fitted with the hopper 16, the outer thin case 22 is further rotated because there is no stopper member 24, and the outer thin case locking piece 22a and the hopper locking piece 16a exceed the fitting range and the locking piece is again locked. When opened, the outer thin case 22 is detached from the hopper 16.

The removal method of the outer thin 6a and the inner thin 6b is summarized as follows.
The inner thin 6b can also be removed by removing from. After removing the inner thin 6b, the outer thin 6a is rotated by rotating the outer thin case 22 in a counter-rotational direction with respect to the rotating shaft 11 to open and remove the outer thin case locking piece 22a and the hopper locking piece 16a. There are two methods of removing the stopper member 24, rotating the outer thin case 22 in the same rotation direction as the rotating shaft 11, and opening and removing the outer thin case locking piece 22a and the hopper locking piece 16a.

The former is a method of easily removing the outer thin 6a and the inner thin 6b during normal maintenance, and the latter is a method of removing the inner thin 6b when the inner thin 6b is locked by foreign matter such as wood chips.

The latter will be described below. When the thin motor is locked between the outer thin wall 6a and the inner thin wall 6b by foreign matter such as wood chips, and the motor 14 is locked, the motor 14
An overcurrent flows through the device, and a manual reset type overcurrent protection device (not shown) provided inside the main body 1 operates to protect the motor 14 from damage. At this time, the inner thin 6b is the motor 14
Since the worm gear 15 is decelerated and driven by the worm gear 15, a very large torque was transmitted to the inner thin 6b. As a result, the outer thin 6a and the inner thin 6b mesh with each other very strongly, so that the former method cannot remove the inner thin 6b or rotate the outer thin case 22 in the counter-rotational direction of the rotary shaft 11 so that the outer thin cannot be rotated. It is impossible to remove both the thin 6a and the inner 6b from the main body 1. At this time hopper 1
By removing the stopper member 24 from 6, the outer thin case 22 is opened in the same rotation direction as the rotating shaft 11, so that the outer thin 6a and the inner thin 6b, which are strongly meshed with each other, are loosened and further rotated. The outer thin case locking piece 22a and the hopper locking piece 16a are released,
The a and the inner thin 6b can be removed from the main body 1. After removing foreign matter from between the outer thin 6a and the inner thin 6b, the outer thin 6a and the inner thin 6b are set in the main body 1, and the coffee bean crusher 6 can be reused by releasing the overcurrent protection device. ..

[0021]

As described above, according to the present invention, both the outer and inner stools can be detached from the main body, so that the coffee powder remaining on the thin blade portions of both stools can be easily cleaned and is hygienic. Also, it is possible to prevent a decrease in coffee bean crushing efficiency,
In addition, the side surface of the outer case locking piece is abutted against the stopper member to fix the outer case in the rotation direction, and during normal maintenance, the outer case is rotated in the counter-rotational direction of the rotation shaft to remove it. Open the case locking piece and the hopper locking piece to remove the thin case together with the thin case for maintenance.Also, even if foreign matter such as wood chips enters and the light is locked, remove the stopper member from the hopper and remove it from the rotary shaft. The coffee bean crusher can be reused by removing the outer case by rotating the outer case in the direction of rotation and removing the semi-fixed outer case to remove foreign matter.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an electric coffee brewer showing an embodiment of the present invention.

FIG. 2 is also a plan view of the relevant part.

FIG. 3 is a cross-sectional view of the coffee bean crusher section.

[Explanation of symbols]

 1 Main Body 6 Coffee Bean Crusher 6a Outer Thin 6b Inner Thin 11 Rotating Shaft 12 Fixing Screw 14 Motor 16 Hopper 16a Hopper Locking Piece 22 Outer Thin Case 22a Outer Thin Case Locking Piece 24 Stopper Member

Claims (4)

[Claims] 1. Coffee beans comprising an outer thin wall (6a) and an inner thin wall (6b), wherein the inner thin wall (6b) is rotated by an output of a motor (14) via a rotary shaft (11) to crush coffee beans. Use the crusher (6) to remove (6
An electric coffee brewer characterized in that both a) and the inner thin (6b) are detachably attached. 2. An inner thin wall (6b) at the lower end of the rotating shaft (11).
Is detachably attached with a fixing screw (12), and an outer thin case locking piece (2) which is a fitting portion with the hopper (16) is attached to the outer thin case (22) to which the outer thin (6a) is fixed.
2a) are provided at a plurality of places, and similarly, a hopper locking piece (16a) is also provided on the hopper (16) so that the case (22) in which these locking pieces fit together and come off does not drop from the main body (1). , A case (2) in which the fitting between the outer thin case locking piece (22a) and the hopper locking piece (16a) is released.
The electric coffee brewing machine according to claim 1, wherein the structure (2) is removed and the housing (6a) is removed. 3. A stopper member (2) for the hopper (16).
4) is detachably provided, and the side of the case locking piece (22a) which is detachable from the stopper member (24) is fixed in the rotation direction so as to be detached in the counter-rotational direction of the rotation shaft (11). The structure for removing the thin outer case (22a) and the outer thin case (6a) by opening the outer thin case locking piece (22a) and the hopper locking piece (16a) by rotating the (22). Electric coffee kettle. 4. A stopper member (2) is attached to the hopper (16).
4) is detachably provided, and the side surface of the case locking piece (22a), which is detached from the stopper member (24), is fixed in the rotation direction, and the stopper member (24) is removed from the hopper (16) and rotated. The electric coffee brewing machine according to claim 2, wherein the outer casing (22) is removed by rotating the outer casing (22) in the direction of rotation of the shaft (11), and the outer casing (6a) is removed.