JPH05101B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric meat grinder for general household and commercial use.

Construction of a conventional example and its problems A conventional electric meat grinder has a construction as shown in FIG. That is, in the figure, 1 is a main body, in which an electric motor 2 and a speed reduction device 3 are built. A transmission shaft 4 extends from the speed reducer 3 . One end of a screw casing 5 made of aluminum die-casting or the like having a charging part 5a is detachably attached to the main body 1, and a spiral chevron blade (not shown) is attached to the inner peripheral surface of the casing 5. ) are formed in several places. Casing 5
The outer periphery of the other end is a threaded portion 5b, and an end cover 6 having an outlet round hole 6a in the center is removably screwed into this threaded portion 5b. Casing 5
Inside, a screw unit 7 having a continuous spiral chevron-shaped blade 7a on its outer periphery is rotatably disposed. One end of the screw unit 7 is a shaft portion 7b.
The engagement protrusion 7c formed on the shaft portion 7b removably fits into the engagement recess 4a formed at the tip of the transmission shaft 4, so that the driving force from the electric motor 2 is transferred to the screw unit. 7. The other end of the screw unit 7 is also formed as a shaft portion 7d, and a substantially cross-shaped rotating cutter 8 is fitted onto a rectangular engaging portion 7e formed on this shaft portion 7d. Therefore, the rotary cutter 8 can rotate together with the screw unit 7. A fixed cutter 9 having a large number of round holes is provided opposite the rotary cutter 8, and the other end shaft portion 7 of the screw unit 7 is disposed in the center of the fixed cutter 9.
d is rotatably received. Fixed cutter 9
has flanges (not shown) at appropriate intervals on the outer periphery, and by fitting these flanges into notches (not shown) formed at the other end of the casing 5, the fixed cutter 9 is prevented from rotating. Achieved. In addition, 10
11 is a hopper fitted to the upper part of the input portion 5a of the casing 5, and 11 is a push rod for pushing meat such as mutton placed in the hopper 10 from the input portion 5a into the casing 5.

In the above configuration, when the meat is pushed into the casing 5 by the pushing rod 11, the meat is advanced by the rotating screw unit 7, and after being subjected to a predetermined processing by both cutters 8 and 9, the end portion It is discharged from the outlet round hole 6a of the cover 6.

However, in the above conventional example, after grinding the required amount of meat, the following problems occurred when the meat was disassembled to clean and remove the meat adhering to the inner surface of the casing 5 and the outer surface of the screw unit 7. That is, although the end cover 6 itself can be easily removed by unscrewing it from the threaded portion 5b of the casing 5, the fixed cutter 9, rotary cutter 8, and screw unit 7 (these are all removed at the same time). Removal from the casing 5 is difficult because the grasping portion of the shaft portion 7d of the screw unit 7 is very small.
This was noticeable when mutton, bone-in meat, etc. got stuck between the blade and the chevron-shaped blade on the inner peripheral surface of the casing 5.
In order to eliminate this drawback, it seems to be a good idea to make the gripping portion of the shaft 7d larger, but in reality, if the length of the shaft 7d protruding from the fixed cutter 9 is increased, the shaft 7d will cover the end. There is a problem that it protrudes from the cutter 6 and hits the hand, and the diameter of the shaft portion 7d cannot be made too large due to the pitch of the round hole of the fixed cutter 9.

OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks.
An object of the present invention is to provide an electric meat grinder in which a screw unit can be easily taken out from a screw casing.

Structure of the Invention In order to achieve the above object, the electric meat grinder of the present invention includes a main body with a built-in electric motor, a screw casing detachably attached to the main body at one end, and other parts of the screw casing. A screw unit is rotatably disposed within the screw casing, and one end of the screw unit is connected to a transmission drive for transmitting the driving force from the electric motor. The screw unit is removably fitted onto the shaft, and a compression coil spring is provided between an abutment flange provided near one end of the screw unit and a spring seat formed inside one end of the screw casing. .

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In this figure, the same members as those in FIG. 1 are given the same reference numerals, and their explanations will be omitted.

In FIG. 2, one end portion of the screw casing 5 is provided with a bearing portion 5c for the shaft portion 7b of the screw unit 7, and this bearing portion 5c is provided for the shaft portion 7b of the screw unit 7.
A spring seat 5d is provided around c. On the other hand, an abutment flange 7f is provided near one end of the screw unit 7 and faces the spring seat 5d. And between the spring seat 5d and the abutment flange 7f,
A compression coil spring 12 is interposed. In addition, 7g
is a protective cover for the compression coil spring 12.

In the above configuration, when the end cover 6 is loosened and removed for cleaning after grinding meat in the same manner as that shown in FIG. It automatically pops out in the direction of arrow A together with the cutter 8 and fixed cutter 9. Therefore, it becomes easy to remove these members from the casing 5, that is, to clean them.

By appropriately setting the wire diameter, number of windings, and spring constant of the compression coil spring 12, even if mutton, bone-in meat, etc. gets stuck between the chevron blades of the screw casing 5 and the screw unit 7, The screw unit 7 can be easily taken out.

Effects of the Invention As explained above, the electric meat grinder according to the present invention is configured such that when the end cover is removed from the screw casing, the screw unit protrudes from inside the casing by the action of the compression coil spring. This has the excellent effect of making it easier to take out the screw unit after grinding the meat.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing a conventional electric meat grinder;
The figure is a sectional view showing an electric meat grinder according to an embodiment of the present invention. 1...Main body, 2...Electric motor, 4...Transmission shaft, 5
...Screw casing, 5d...Spring seat, 6
...End cover, 7...Screw unit, 7
f...Abutment flange, 12...Compression coil spring.

Claims (1)

[Claims] 1 A main body with a built-in electric motor, a screw casing detachably attached to the main body at one end, and an end cover detachably screwed to the other end of the screw casing, A screw unit is rotatably disposed within the casing, one end of the screw unit is removably fitted to a transmission shaft that transmits the driving force from the electric motor, and the screw unit is provided near one end of the screw unit. An electric meat grinder comprising a compression coil spring provided between the joint flange and a spring seat formed inside one end of the screw casing.