KR101623884B1 - Device for automatic coffee machine bean grinder - Google Patents

Abstract

The grinding machine for automatic coffee machine according to the present invention comprises a driving main body 10 to which a grinding drive motor M 1 and a gap adjusting motor M 2 are connected to transmit a driving force to a lower portion, And a discharge main body portion 30 for easily moving the pulverized coffee powder BP so that the interval between the pulverizing blade portions can be easily changed to provide a coffee It is possible to prevent breakage due to the crushing impact and to easily press down the coffee powder adhered to the inner surface of the discharge main body portion in contact with the water present therein.

Description

Technical Field [0001] The present invention relates to a device for automatic coffee machine bean grinder,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee grinder for automatic coffee machines, and more particularly, to a coffee grinder for automatic coffee machines, which is capable of grinding a coffee bean to a desired size, And a discharge body portion provided with a pressurizing rod that is raised and lowered so that the coffee powder is pressed down and discharged in a downward direction. The present invention relates to a coffee grinder for an automatic coffee machine.

In recent years, the demand for coffee has increased dramatically due to a variety of preferences of consumers, and the demand for coffee machines has been increasing in accordance with the increase of coffee shops and the specialization according to consumers' preferences.

Generally, a conventional coffee machine has a structure in which a grinder for crushing beans and an espresso machine for extracting coffee using pulverized bean flour are separated from each other. However, due to demands of automation, Production and research on automatic coffee machines are actively under way.

Japanese Laid-Open Patent No. 10-1294265 is disclosed as a technical document for such a conventional coffee machine, and FIG. 1 is a configuration diagram showing a conventional grinder provided in a coffee machine.

1, a grinder provided in a conventional coffee machine includes a bean cylinder 2 to which roasted coffee beans are fed, a bean sprocket 2 which is inserted into a shaft hole in the center of the bean sprocket 2, A first grinder 4 of a ring type in which a plurality of screw-shaped pulverizing claws 4a are inclined inward and a rotating shaft 3 rotating by external power, And a second grinder 5 having a screw type grindstone 5b formed on an outer side of the inserting portion 5a so as to be inclined. When the second grinder 5 is inserted and rotated, the beans flow into the gap and are pulverized.

However, since the conventional grinder provided in the coffee machine is incapable of adjusting the grain size of the coffee beans when the user grinds the coffee beans, it is difficult for the user to uniformly provide a predetermined coffee taste desired by the user. To this end, There has been a problem that the operation of replacing the second grinder 5 according to the particle size is accompanied by the inconvenience in use.

In addition, since a grinder provided in a conventional coffee machine is in contact with water vapor or moisture generated by hot water, the powder is adhered to the moving wall surface on which the powder moves and is not smoothly moved. In addition, And there is a problem such as bacterial contamination due to the residual powder powder.

The grinder provided in the conventional coffee machine has a grinder operation for extracting coffee, which is set to a time zero. However, the grinder rotation error is generated according to the hardness and size of the coffee beans, There was a problem that was generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional art, and it is an object of the present invention to provide a beverage grinder for automatic coffee machine, which is capable of rotating and driving one of the grinding blades, And a grinding main body part for grinding the coffee beans according to the user's preference, so that desired coffee can be extracted and inserted into the spiral gap adjusting guide groove so that the upper grinding blade is raised and lowered when the upper blade fixing ring rotates And a discharge body portion provided with a pressing rod which is moved up and down inside the pulverizing body portion so that the pulverized coffee powder is moved to the lower side is formed at one side of the pulverizing body portion so that the coffee powder can be easily So that the coffee beans can be pressurized and discharged in a downward direction.

In order to achieve the above object, the present invention provides a coffee grinder for automatic coffee machine, comprising: a coffee grinder for grinding roasted coffee beans into coffee powder for extraction; A gap setting unit protruded so that a gap adjusting motor is vertically connected to one side of the driving housing; and a gap setting unit which is formed in the gap mounting unit, A driving main body portion formed on the upper surface thereof with a gap adjusting gear in a gear shape connected to the gap adjusting motor; A cylindrical crushing housing which is seated on the upper part of the drive housing and has a discharge hole pierced to discharge the ground coffee powder to one side thereof; a crushing housing provided inside the crushing housing and connected to the central axis of the crushing drive gear, A lower crushing blade part in the form of a disk; a ring-shaped upper crushing blade part which is seated on the upper surface of the lower crushing blade part and has a crushing blade formed on a lower surface thereof; A pulverizing main body part formed by a ring-shaped upper blade fixing ring formed with an adjusting gear; And a discharge main body vertically connected to one side of the pulverizing main body to move the coffee powder downward.

A gap adjusting guide groove recessed in a helical shape is formed on an inner peripheral surface of the upper blade fixing ring; And a plurality of gap guiding protrusions to be inserted into the gap adjusting guide groove are formed on the outer circumferential surface of the upper crushing blade portion so as to move up and down when the upper blade fixing ring rotates.

Wherein a plurality of fixed ring locking protrusions for blocking the upper blade fixing ring are formed on an upper surface of the stationary ring seating member, And a fixing ring engagement protrusion protruding inwardly is formed on a lower inner circumferential surface of the upper blade fixing ring so as to be engaged with a lower portion of the fixing ring engagement protrusion.

The discharge main body includes a tubular discharge main body connected to the discharge hole and formed with a vertical powder transfer path, a discharge drive housing formed to connect a discharge drive motor to an upper side of the discharge main body, And a rod-like pressing rod to which a pressure plate for pressing down the coffee powder existing in the discharge body downward is attached.

A retaining gear is formed on one side surface of the pressing rod in the longitudinal direction; And the discharge driving motor is provided with a gear-shaped discharge gear which is gear-engaged with the return gear.

And a rotation sensor coupled to the shaft center of the crushing drive gear and containing magnetism therein is provided on the lower surface of the driving housing, and a hole sensor for sensing the rotation speed of the magnet is provided on one side of the rotation sensor .

And a variable resistance rotation inducing portion is formed on an upper portion of the gap adjusting gear so as to be inserted into a center portion of the gap adjusting gear so that a resistance value is changed to adjust a rotation angle of the gap adjusting gear.

As described above, the coffee grinder device for an automatic coffee machine according to the present invention has the following effects.

First, a driving body portion provided in each of the bean grinders for an automatic coffee machine and provided with respective driving motors for rotating and driving one of the pulverizing blade portions and the other pulverizing blade portion is coupled with the pulverizing main body portion, It is possible to extract coffee in accordance with the user's preference by selecting various particle sizes,

Second, since a plurality of gap guiding protrusions are inserted into the spiral gap adjusting guide groove so that the upper grinding blade portion is moved up and down when the upper blade fixing ring rotates, The particle size of the powder can be crushed to a large change width,

Third, since a plurality of rotation preventing guide grooves are formed in the lower direction so as to vertically move the gap guiding projections when the upper grinding blade unit is rotated, the upper grinding blade unit is prevented from rotating at the same time during rotation of the upper blade fixing ring The upward and downward action of the upper crushing blade portion can be accurately performed,

Fourthly, a discharge main body portion having a pressurizing rod which is moved up and down inside the pulverizing main body to move the ground coffee powder downward is formed at one side of the main pulverizing main body, so that coffee powder attached to the inner surface of the discharge main body, It is possible to pressurize and discharge it in a downward direction with ease,

Fifth, a rotation sensing means in which a magnet is accommodated on the lower surface of the driving housing and a hall sensor for sensing the number of rotations of the magnet are provided, thereby detecting the rotation speed of the crushing drive gear by the Hall sensor and setting the existing cycle process to a time zero By setting the number of rotations of the lower crushing blade portion, the beans can be pulverized and discharged in a predetermined amount more accurately,

Sixth, since the variable resistance rotation inducing portion is inserted into the upper portion of the gap adjusting gear, the number of revolutions of the gap adjusting gear is increased or decreased by a resistance value set externally, and the powder is ground to a powder particle size according to the user's preference .

1 is a view showing a grinder provided in a conventional coffee machine,
FIG. 2 is a perspective view of a grinder apparatus according to the present invention,
FIG. 3 is an exploded perspective view showing a bean grinder device according to the present invention,
FIG. 4 is a cross-sectional view showing the operation of grinding the beans in the bean grinders according to the present invention,
FIG. 5 is a cross-sectional view showing that the upper pulverizing blade according to the present invention is lifted and lowered,
6 is a cross-sectional view illustrating the operation of the discharge body according to the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The coffee grinder device for an automatic coffee machine according to the present invention is used for an automatic coffee machine (C) for crushing a roasted coffee bean (B) into coffee powder for extraction (BP) as shown in Figs. 2 to 3 Shaped driving housing 11 in which a motor connecting portion 11a is formed so that a crushing drive motor M1 is connected to one side of the crushing drive motor 11 A gap installation part 13 protruded so that a gap adjusting motor M2 is perpendicularly connected to one side of the drive housing 11 and a gap setting part 13 projecting from the upper surface of the gap mounting part 13 A driving main body 10 composed of a gear-like gap adjusting gear 14 connected to the gap adjusting motor M2 is formed.

The motor connection part 11a is formed in parallel with an outer circumferential surface of the drive housing 11 and is formed in a pipe shape to insert the crushing drive motor M1 at a center thereof. A worm gear type gear (not shown) is formed on the rotary shaft of the crushing drive gear 12 so as to be engaged with the crushing drive gear 12, and the crushing drive gear 12 is also formed of a worm gear.

Meanwhile, a motor shaft hole (not shown) may be formed in the gap mounting portion 13 such that the axis of the gap adjusting motor M2 protrudes upward.

A cylindrical crushing housing 21 which is seated on the upper portion of the drive housing 11 and has a discharge hole 21a formed therein for discharging crushed coffee powder BP at one side thereof, Shaped lower crushing blade portion 22 which is connected to the axis of the crushing drive gear 12 and has a crushing blade N formed on the upper surface thereof and a lower crushing blade portion 22 which is seated on the upper surface of the lower crushing blade portion 22, A ring-shaped upper crushing blade portion 23 formed with a blade N and an upper adjustment gear 24a fixed to the upper crushing blade portion 23 and engaged with the gap adjusting gear 14 on the outer surface thereof, Shaped grinding body portion 20 composed of the upper blade fixing ring 24 is formed.

Inside the crushing housing 21, there is formed a crushing blade seat fitting piece (not shown) extending inward so that the lower crushing blade portion 22 is seated on the upper side, It is preferable that a needle thrust bearing (NB) is provided to reduce frictional force during rotation of the lower crushing blade portion (22).

A driving force transmission shaft (not shown) protruded to be connected to the central axis of the crushing drive gear 12 is formed on a lower surface of the lower crushing blade portion 22. On the upper surface thereof, And guide rods GB having guide grooves (not shown) formed on the outer circumferential surface thereof so as to guide the guide grooves (not shown).

And a discharge main body 30 vertically connected to one side of the pulverizing main body 20 so as to move the coffee powder BP downward.

Further, a gap adjusting groove 24b spirally recessed is formed on the inner peripheral surface of the upper blade fixing ring 24; A plurality of gap guiding protrusions 23a are formed on the outer circumferential surface of the upper grinding blade 23 to be inserted into the gap adjusting guiding grooves 24b so as to move up and down when the upper blade fixing ring 24 rotates.

A plurality of rotation preventing guide grooves 21d are formed on the upper portion of the crushing housing 21 so as to vertically move the gap inducing protrusions 23a of the upper crushing blade portion 23 without rotating.

A fixing ring seat piece 21b protruding outward is formed on the outer circumferential surface of the crushing housing 21 so that the upper blade fixing ring 24 is seated. A plurality of fixed ring locking projections 21c for blocking the blade fixing ring 24 are formed; On the lower inner circumferential surface of the upper blade fixing ring 24, a stationary ring engaging projection 24c protruding inward to be engaged with the lower portion of the stationary ring engaging projection 21c is formed.

The discharge main body portion 30 includes a pipe-shaped discharge main body 31 connected to the discharge hole 21a and having a vertical powder transfer path 31a, A discharge drive housing 32 formed to connect a discharge drive motor M3 to the discharge main body 31 and a coffee powder BP which is raised and lowered from the upper portion of the discharge main body 31, Shaped pressing rod 33 to which a pressing plate 33a for pressing the pressing plate 33a downward is attached.

Further, a take-up gear 33b is formed on one side surface of the pressing rod 33 in the longitudinal direction; The discharge driving motor M3 is formed with a gear discharge gear 33c which is gear-engaged with the return gear 33b.

A discharge cap (34) for sealing the upper surface of the discharge main body (31) is formed at an upper portion of the discharge main body (31); On one side of the discharge stopper 34, the pushing rod 33 penetrates and a rod guide hole 34a for guiding the movement in the ascending and descending direction is formed.

The discharge stopper 34 is seated on the upper face of the stationary ring seat piece 21b and the discharge body 31 is attached to the lower face of the stationary ring seat piece 21b, 21b may be formed with a discharge connection hole (not shown) so that the discharge stopper 34 and the discharge main body 31 pass through each other.

3 to 4, the rotation sensing means 15 is connected to the shaft center of the crushing drive gear 12 and rotatably receives the magnetic force MA therein, And a hall sensor 15a for sensing the number of revolutions of the magnet MA is provided on one side of the rotation sensing unit 15. [

On the other hand, a rectangular Hall sensor fixing cover (HC) is attached to one side of the rotation detecting means 15 and attached to a portion of the driving housing 11 at a predetermined distance away from the center of the driving housing 11 so that the Hall sensor 15a is fixed .

A variable resistance rotation inducing portion 14a is inserted into the center of the gap adjusting gear 14 so that the rotation angle of the gap adjusting gear 14 is adjusted by varying the resistance value of the gap adjusting gear 14, .

The variable resistance rotation induction unit 14a includes a variable resistance body (not shown) having a resistor mounted therein and a variable resistance body (not shown) protruding downward from the inside of the variable resistance body (Not shown) to be inserted into a center portion of the rotary shaft 14 (not shown).

At this time, it is preferable that a gear portion (not shown) is formed on the lower outer circumferential surface of the rotary shaft (not shown) so as to increase or decrease the rotation angle of the gap adjusting gear 14.

Hereinafter, the operation of the bean grinder for automatic coffee machine having the above-described structure will be described.

The coffee grinder device for an automatic coffee machine according to the present invention is characterized in that it comprises an automatic coffee machine (C) for crushing roasted coffee beans (B) into coffee powder for extraction (BP) as shown in Figs. 4 to 6 (1).

When the roasted coffee bean B is first introduced into the pulverizing main body portion 20, friction of the pulverizing blade N formed on the contact surface between the lower pulverizing blade portion 22 and the upper pulverizing blade portion 23 The coffee beans B are crushed and the pulverized coffee powder BP is moved to the outside of the lower crushing blade portion 22 and the upper crushing blade portion 23 to form the discharge holes 21a of the crushing housing 21 To the outside.

At this time, the lower crushing blade portion 22 is rotationally driven by the driving force of the crushing drive motor M1, and the upper crushing blade portion 23 is fixed so as not to rotate so that mutual frictional force is generated, So that it can be crushed.

The upper grinding blade 23 is moved up and down so as to vary the distance between the upper grinding blade 23 and the grinding blade N formed on the lower grinding blade 22 to change the grinding grain size of the coffee beans B, The grinding blade portion 22 is accommodated in the inside of the upper blade fixing ring 24 rotated by the driving force of the gap adjusting motor M2 so that the gap guiding projection portion 23a of the upper grinding blade portion 23 is spirally The upper grinding blade 23 is vertically moved up and down during rotation of the upper blade fixing ring 24 so that the grinding grain size can be varied.

The lower edge of the upper blade fixing ring 24 protrudes inward so as to be caught by the lower surface of the fixing ring locking protrusion 21c and has a tangential fixing ring coupling protrusion 24c, Can be idled but can be prevented from being deviated toward the upper direction.

A plurality of rotation preventing guide grooves 21d are formed on the upper portion of the crushing housing 21 so as to insert the fixing ring locking protrusion 21c in the downward direction, The upper grinding blade 23 coupled to the inside of the shaft can be prevented from rotating and vertical movement can be induced.

The coffee powder BP discharged to the outside through the discharge hole 21a of the pulverizing housing 21 is moved downward in order to move to the next manufacturing process. The coffee powder adhered to the inner surface of the discharge main body portion can be easily pressed downward by making contact with the water present in the discharge main body portion 30, It can be discharged.

The pressing rod 33 is inserted into a rod guide hole 34a formed on one surface of the discharge stopper 34 and is engaged with a discharge gear 33c provided in the discharge driving motor M3, (33b) is formed, the pressing rod (33) can be moved up and down.

A rotation sensing means 15 is mounted on the lower surface of the driving housing 11 and connected to the shaft center of the crushing drive gear 12 to receive a magnetic force MA therein. The number of rotations of the crushing drive gear 12 is detected and counted by the hall sensor 15a to set the time cycle of the existing cycle process by the Hall sensor 15a provided in the lower crushing blade portion 22, By setting the number of rotations, the crushing operation can be performed more accurately.

The gap adjusting gear 14 is provided at its upper portion with a variable resistance rotation inducing portion 14a inserted into the central portion thereof to increase or decrease the rotation angle of the gap adjusting gear 14 with a resistance value set externally, It is possible to control the rising and falling of the crushing blade 23 and crushing the crushed powder with the powder size according to the user's preference.

In this case, the variable resistance rotation induction unit 14a is connected to an external rotation volume (not shown) to easily change the resistance value and adjust the rotation angle of the gap adjustment gear 14 to adjust the particle size of the powder to be ground .

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Description of the Related Art
1: Grinder device 10: Driving main body part
11: drive housing 11a: motor connection
12: crushing drive gear 13: gap installation part
14: gap adjusting gear 15: rotation detecting means
15a: Hall sensor 20: Crushing body part
21: Grinding housing 21a: Exhaust hole
21b: fixed ring seat piece 21c: fixed ring locking projection
21d: rotation preventing guide groove 22: lower crushing blade
23: upper crushing blade portion 23a:
24: upper blade fixing ring 24a: upper adjustment gear
24b: gap adjusting guide groove 24c: fixed ring engaging projection
30: Discharge main body 31: Discharge main body
31a: Powder transfer path 32: Discharge drive housing
33: pressing rod 33a: pressing plate
33b: Recoil gear 33c: Discharge gear
34: discharge cap 34a:
M1: Crushing drive motor M2: Clearance motor
M3: Discharge drive motor B: Coffee bean
BP: Coffee Powder MA: Magnetic
14a: Variable resistance rotation induction portion

Claims (7)

1. A coffee grinder device (1) for an automatic coffee machine (C) for crushing roasted coffee beans (B) into coffee powder for extraction (BP)
Shaped drive housing 11 having a motor connecting portion 11a formed on one side thereof for connecting the crushing drive motor M1 to the crushing drive motor M1, A clearance setting unit 13 protruded to vertically connect a clearance adjusting motor M2 to one side of the drive housing 11 and a gap adjusting motor M2 A driving main body 10 composed of a gear-like gap adjusting gear 14 connected to the driving gear 10;
A cylindrical crushing housing 21 which is seated on the upper portion of the drive housing 11 and has a discharge hole 21a formed therein for discharging crushed coffee powder BP at one side thereof, A lower crushing blade portion 22 connected to the axis of the crushing drive gear 12 and having a crushing blade N formed on the upper surface thereof; Shaped upper crushing blade portion 23 in which the upper crushing blade portion 23 is fixed and the upper adjusting gear 24a is engaged with the gap adjusting gear 14 on the outer surface thereof, A crushing main body portion 20 made up of an upper blade fixing ring 24;
And a discharge main body 30 vertically connected to one side of the pulverizing main body 20 so as to move the coffee powder BP downward;
A gap adjustment guide groove 24b spirally formed on the inner peripheral surface of the upper blade fixing ring 24 is formed;
And a plurality of gap guiding protrusions (23a) inserted into the gap adjusting guiding grooves (24b) so as to move up and down when the upper blade fixing ring (24) rotates is formed on the outer circumferential surface of the upper grinding blade part (23) Bean grinders for coffee machines. delete The method according to claim 1,
A fixing ring seat piece 21b protruding outward is formed on the outer circumferential surface of the crushing housing 21 so that the upper blade fixing ring 24 is seated thereon. A plurality of fixed ring locking projections 21c for blocking the ring 24 are formed;
And a fixing ring engagement protrusion (24c) protruding inwardly to be engaged with a lower portion of the fixing ring locking protrusion (21c) is formed on a lower inner circumferential surface of the upper blade fixing ring (24). The method according to claim 1,
The discharge main body portion 30 includes a pipe-shaped discharge main body 31 connected to the discharge hole 21a and having a vertical powder transfer path 31a formed thereon, A discharge drive housing 32 formed to connect the drive motor M3 to the discharge main body 31 and a coffee powder BP which is raised and lowered from the upper portion of the discharge main body 31, And a rod-like pressing rod (33) having a pressing plate (33a) for pressing the pressing rod (33a). 5. The method of claim 4,
A retaining gear 33b is formed on one side surface of the pressing rod 33 in the longitudinal direction;
And a gear-out gear (33c) gear-engaged with the lever gear (33b) is formed on a shaft of the discharge driving motor (M3). The method according to claim 1,
The rotation sensing means 15 is connected to the shaft center of the crushing drive gear 12 and has a magnet MA housed in the lower portion of the driving housing 11. And a hall sensor (15a) for sensing the number of revolutions of the magnetic (MA) is provided on a side surface of the beverage grinder. The method according to claim 1,
A variable resistance rotation inducing portion 14a is formed on the gap adjusting gear 14 so as to be inserted into the center of the gap adjusting gear 14 so that the resistance of the gap adjusting gear 14 is changed to adjust the rotation angle of the gap adjusting gear 14 Wherein the beverage grinder is a beverage grinder.

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