JPH0112688Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coffee mill that continuously cuts coffee beans into desired particle sizes. Specifically, a rotary blade attached to the rotating shaft of a motor and a fixed blade attached to a fixed member are opposed to each other, and coffee beans are continuously fed and cut between the two blades, and the distance between the two blades is changed. This invention relates to a coffee mill designed to change and adjust the cut particle size of coffee beans.

Various coffee mills of this type have been proposed in the past, but they have had many problems, such as changing the distance between the fixed blade and the rotary blade is very complicated and time-consuming, and the structure is complicated. For example, normally the distance between a fixed blade and a rotary blade is changed by directly moving one of the blades, but if such a structure is adopted, the movable blade can be used to cut coffee beans. The blade rotates due to vibrations or rotates with the rotating shaft of the motor, and the distance between the fixed blade and the rotating blade changes inadvertently, which changes the cut grain size of the coffee beans, or the so-called roughness of the coffee beans. There is a possibility that Therefore, a special structure is required that can reliably maintain the fixed state of the movable blade when in use, and yet allows the blade to be easily moved when changing the spacing, which increases the structural complexity and However, there was a problem in that the operation to change the roughness of the coffee beans was complicated and time-consuming.

The present invention was devised to solve such problems, and its purpose is to make it extremely easy and convenient to cut the grain size of coffee beans, so-called roughness, and to set the grain size of coffee beans exactly as desired. To provide a coffee mill which can carry out grinding, reliably maintain the particle size setting without being affected by vibrations, etc., without becoming structurally complex, and whose structure can be simplified and compacted. It is in.

That is, in the present invention, a rotary blade is attached to the rotating shaft of a motor provided on a base, an operating body is rotatably supported by a fixed member supported on the base, and the fixed blade is screwed onto the operating body. The fixed blade is opposed to the rotary blade by being supported together, and the operating body is rotated to allow the fixed blade to move toward and away from the rotary blade. forming a plurality of locking parts at predetermined intervals, attaching a stopper to the fixing member, and engaging the stopper with the locking part so as to be relatively movable in the axial direction;
The fixed blade is characterized in that it is configured to prevent rotation of the fixed blade.

Embodiments of the present invention will be described below based on the drawings.

In the figure, reference numeral 1 designates a base having a support post 2 that is erected in a forward-slanted manner.A motor 3 is fixedly supported on the base 1 via the support post 2, and the motor shaft and transmission ( (not shown), and a casing 5 is provided on the base 1 so as to surround the column 2 and the motor 3, and the upper end of the column 2 and the casing 5 is placed on the motor 3. A bottomed cylindrical fixing member 6 having an insertion hole for the rotating shaft 4 is placed and fixed on the fixing member 6, and a take-out guide conduit 7 is fixed on the front side of the fixing member 6. A communication opening is provided in the member 6 through a communication hole 8 formed in the peripheral wall of the member 6.

On the other hand, a disk-shaped rotary receiver 9 is loosely inserted into the rotary shaft 4 within the fixing member 6, and the rotary blade 10 is fixed annularly onto the receiver 9. This receiver 9 has blades 11 on its outer periphery for splashing cut coffee beans outward.
is provided with a cylindrical boss portion 12 at its center, and a cut groove 13 extending in the radial direction is formed at the free end of the boss portion 12, so that the receiver 9 can be connected to the rotating shaft 4 through the boss portion 12. At the same time, the rotating shaft 4 is inserted from the cut groove 13 into the rotary shaft 4.
The shear pin 1
4 is inserted, and the rotational force from the rotating shaft 4 is transmitted to the receiver 9 via the shear pin 14, and when an overload is applied, the shear pin 14 is broken and the transmission of the rotational force is cut off. . Incidentally, instead of this shear pin 14, a friction transmission mechanism may be used to release the overload, that is, a friction plate 35 and a spring 36 are inserted into the rotating shaft 4 as shown in FIG.
A supply body 28 whose one end portion of the spring 36 will be described later.
The other end is brought into contact with the friction plate 35, and the friction plate 35 is brought into elastic contact with the rotation receiving body 9, and the rotation shaft 4
The rotational force from the rotor is transmitted to the rotating receiver 9 via the supply body 28, the spring 36, and the friction plate 35, and when an overload is applied, the rotational force is blocked by the friction plate 35 and the transmission of the rotational force is interrupted. You can also use it.

Further, a ring-shaped operating body 16 having a threaded groove 17 on the inner periphery is rotatably fitted into the inner upper position of the fixed member 6, and a threaded groove 19 is formed on the outer periphery of the operating body 16, and a threaded groove 19 is formed on the outer periphery of the operating body 16. An annular fixed receiver 18 having a latch-shaped opening 20 is screwed into the receiver, and an annular fixed blade 21 is fixed to the lower end of the receiver 18.
While the fixed blade 21 is opposed to the rotary blade 8, a plurality of locking grooves 22 extending in the same direction as the axis are formed at predetermined intervals on the outer periphery of the receiver 18, and a sixth, Arc-shaped stop plate 2 as shown in Figure 7
3, and a long hole 24 is formed in the stop plate 23 along the arc thereof, and an upright plate 25 is bent at an intermediate position in the longitudinal direction of the stop plate 23, and the upper part of the upright plate 25 is formed with a narrow width. A stopper piece 26 that can be inserted into the locking groove 22 is formed, and the stop plate 23 thus formed is fixed to the upper end surface of the fixing member 6 with a screw 27, and the stopper piece 26 is inserted into the locking groove 2.
2... to allow relative movement only in the axial direction.

Further, a bottomed cylindrical coffee bean supply body 28 having a spiral feeding groove 29 on the outer periphery is fitted onto the boss portion 12 of the rotary receiver 9, and a coffee bean supply body 28 is formed from the supply body 28 to the rotation shaft 4. Set screw 3 into screw hole 30
1 is screwed in to prevent the receiving body 9 from being removed from the rotating shaft 4, and the supply body 28 is rotated integrally with the receiving body 9 to transfer coffee beans between the rotary blade 10 and the fixed blade 21. It is designed to be sent to.

In addition, 32 in the figure is a hopper for storing coffee beans, and the lower opening is the opening 20 of the fixed receiver 18.
It is set up so that you can face it. Further, 33 is an upper cover, 34 is an operating lever, and the lever 34 is connected to the operating body 1 through a notch window formed in the upper cover 33.
6, and the position of this operating lever 34 is configured to be indicated by a nameplate affixed to the upper cover 33, that is, this nameplate has the following information: ``Paper filter, siphon, coffee maker, drip, percolator''. A display like this is made, and by adjusting the operating lever 34 to each position,
The coffee beans are cut with a roughness that is appropriate for each coffee extraction method.

The coffee mill of the present invention is constructed as described above, and the distance between the fixed blade 21 and the rotary blade 10 is adjusted prior to cutting coffee beans. That is, with the operating body 16 positioned on the paper filter (minimum particle size) side using the operating lever 34, hold the lever 34 so that the operating body 16 does not rotate; 18 by hand, the receiver 18 is screwed downward (toward the rotary blade 10 side), and the fixed blade 2 is screwed downward (toward the rotary blade 10 side).
1 is in contact with the rotary blade 10, the receiver 18
The fixed blade 21 is rotated slightly in the opposite direction to unscrew the fixed blade 21. As a result, the position where the cut particle size of the coffee beans is minimized is set.Next, the stop plate 23 is fixed to the fixing member 6 with the screws 27, and the stop piece 26 of the stop plate 23 is attached to the fixing receiver 18. It is fitted into the locking groove 22 of. If there is a discrepancy between the positions of the stopper piece 26 and the locking groove 22, the screws 27 are loosened and the stopper plate 23 is rotated in the circumferential direction to achieve alignment.

When cutting coffee beans in this way,
First, use the operating lever 34 to rotate the operating body 16, move the fixed receiver 18 up and down, adjust the distance between the fixed blade 21 and the rotating blade 10, and set it at the position where the desired roughness is achieved. Hopper 3
2, the motor 3 is driven to rotate the rotary receiver 9, the rotary blade 10, and the supply body 28.
This causes the hopper 32 to rotate.
The coffee beans inside are fed between the rotating blade 10 and the fixed blade 21 via the feeding groove 29 of the feeding body 28, and are cut into a predetermined particle size between the two blades 10 and 21.
It is pushed outward by the blades 11 of the rotating receiver 9,
It is taken out from the communication path 8 via the conduit 7 to the outside.

If a foreign object is caught between the blades 10 and 21 and an overload is applied, the blades 10 and 21 may break, the motor 3 may overheat, or the gear group of the transmission may be damaged. However, in the present invention, the shear pin 14 is cut off to cut off the rotational force from the motor 3 and protect each part.

As explained above, the coffee mill according to the present invention has a rotary blade attached to the rotating shaft of the motor provided on the base, an operating body rotatably supported on the fixed member supported on the base, and the operating body A fixed blade is threadedly supported on the body, and the fixed blade is opposed to the rotating blade, and the operating body is rotated to freely move the fixed blade toward and away from the rotating blade. forming a plurality of locking portions at predetermined intervals on the outer periphery of the blade support member, attaching a stopper to the fixing member, and engaging the stopper with the locking portion so as to be relatively movable in the axial direction; Since the fixed blade is configured to prevent rotation, the cutting grain size of the coffee beans, so-called roughness, can be changed and adjusted by an extremely simple operation of simply rotating the operating body. Moreover, since neither the rotary blade nor the fixed blade is rotated when adjusting the roughness of coffee beans, the structure is not complicated and can be made lighter and smaller. It is.

In addition, before cutting coffee beans, with the operating body positioned on the minimum particle size side, the fixed blade side is rotated by hand, and the fixed blade is screwed toward the rotary blade side. At the position where the fixed blade contacts the rotary blade, the fixed blade is slightly rotated in the opposite direction to unscrew the fixed blade and set it so that the cutting particle size of the coffee beans between the two blades is minimized. The cutting of coffee beans can be accurately set to the desired cutting particle size, and there is no fear of accidentally bringing the fixed blade into contact with the rotating blade and damaging both blades during use.

Also, when changing the distance between the fixed blade and the rotating blade,
The rotation of this fixed blade is securely stopped by the stopper piece, and the operating body is rotated to change the spacing, so this spacing can be changed extremely accurately, and the coffee beans can be ground to the desired roughness. It is possible to cut the coffee beans, and there is no fear that the fixed blade may inadvertently move during use and change the cut particle size of the coffee beans.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a front view thereof, Fig. 2 is a sectional view thereof, Fig. 3 is a partially omitted plan view, and Figs. 4 and 5 are perspective views of main parts. 6 is a plan view of the stop plate, FIG. 7 is a front view thereof, and FIG. 8 is a partial sectional view showing another embodiment. 1... Base, 3... Motor, 4... Rotating shaft, 6
... Fixed member, 10 ... Rotating blade, 21 ... Fixed blade, 22 ... Locking groove (locking part), 26 ... Stopping piece.

Claims (1)

[Scope of utility model registration request] A rotary blade is attached to a rotating shaft of a motor provided on a base, an operating body is rotatably supported on a fixed member supported on the base, and the fixed blade is threadably supported on the operating body, The fixed blade is made to face the rotary blade, and the operating body is rotated so that the fixed blade can move toward and away from the rotary blade. parts are formed at predetermined intervals, and a stopper piece is attached to the fixing member, and the stopper piece is engaged with the stopper part so as to be relatively movable in the axial direction, so as to prevent the fixed blade from rotating. A coffee mill that is characterized by: