JPS6119253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hand mixer having a sieving function for sieving flour, sugar, and the like.

Conventional configuration and its problems A hand mixer equipped with a powder sieving device has a sieve container with a sieve screen fixed to the bottom detachably attached to the main body of the hand mixer, and an unbalanced body installed in the rotational drive source inside the main body. The vibrations generated by the hand mixer are transmitted to the sieve container, or an unbalanced body is installed in the pair of stirring blades that control the main function of the hand mixer to vibrate the sieve container. Not only is there a problem with the durability of the rotating bearing part, but the mesh size of the sieve mesh cannot be changed, and depending on the material being sieved, small powders such as wheat flour can be sieved well even with the same mesh size. , the sieving speed becomes slower for substances with large mass such as sugar.
On the other hand, if the vibration was set to match the speed of sieving the sugar, not only would the flour be scattered during the sieving, but the vibrations of the main unit would be so great that the hands would become numb.

OBJECTS OF THE INVENTION The present invention aims to solve the above-mentioned conventional problems, and aims to provide an easy-to-use hand mixer with a sieving function.

Structure of the Invention The hand mixer of the present invention includes a main body having a rotational drive source, which rotates in connection with the rotational drive source of the main body, supports a sieve container, and has a vertical protrusion formed at the lower end. A rotary shaft and a plurality of sieve nets each having a concave and convex portion having a different level in opposition to the convex portion of the rotary shaft, one of the sieve nets being movable up and down and detachably attached to the sieve container. Description of an embodiment in which vibration is generated only in the sieve screen, and reliable sieving operation is performed by converting the sieve screen.Hereinafter, an embodiment of the present invention will be explained with reference to the accompanying drawings. explain. In FIGS. 1 to 5, 1 is a main body of a hand mixer, which has a handle 2 on the top. Reference numeral 3 denotes an electric motor as a rotational drive source built into the main body of the hand mixer, and a worm gear in which a pair of worm wheels 5 are engaged is formed at the tip of the electric motor shaft 4. The worm wheel 5 is supported by the shaft support 1a of the hand mixer main body 1, and has a connecting hole 5a and a fixing claw 5b integrally formed therein. Two rotatable shafts 7 and a rotating shaft 8 of the sieve container 6 are detachably attached to the connecting hole 5a and the fixing claw 5b. The shaft 7 is attached to the sieve container 6 via a bearing 9, and is prevented from moving in the thrust direction by retaining rings 10, 11. The other rotating shaft 8 similarly supports the sieve container 6 via bearings 12 and 13, and a retaining ring 14 is attached to the upper part, and a claw 18 with an upward convex part is removably fitted to the lower end. It has been done. In addition, a sieve net 15 is interposed in the lower part of the sieve container 6, and an uneven portion 15a is formed in the center of the sieve net 15 so as to face the convex portion of the claw 18, and the spring 19 presses the sieve net 15 against each other. ing. In addition, a sieve container 6 is placed on the outer periphery of the sieve net 15.
A concave rib 15b is formed to fit with the anti-rotation rib 6a, and is set so as not to rotate in the rotational direction. Next, the powder sieving operation and operation of the hand mixer will be explained.

When flour and sugar are placed in the sieve container 6, the shaft 7 and the rotating shaft 8 are engaged with the connection hole 5a and the fixed claw 5b of the worm wheel 5, and the electric motor 3 is energized, the rotating shaft 8 is moved through the worm wheel 5. It rotates, and the claw 18 fitted on the lower end surface also rotates. here,
Since the concave part of the uneven part 15a formed in the center of the sieve net 15 and the convex part of the claw 18 are pressed together by the spring 19, the sieve net 15 also tries to rotate together, but the sieve container 6 provided on the outer periphery anti-rotation rib 6a
Rotation is stopped by the concave rib 15b that fits into the concave rib 15b.
Therefore, the convex portion of the concave and convex portion 15a of the sieve screen 15 rises up against the pressure of the spring 19 onto the convex portion of the claw 18, so that the sieve screen 15 rises upward by the step X of the concave and convex portion 15a and moves to the next concave portion. It goes down. Therefore, the sieve screen 15 vibrates in the vertical direction. That is, when the sieve screen 6 first rises to the top,
The object above it is pushed up, and then it suddenly falls, creating a gap between the net and the object, and the next moment the object falls and the net rises, so the object and the net collide, and objects finer than the mesh only passes through. This operation is repeated and sieved continuously, but when the mass of the object is larger than that of flour, such as sugar, it requires more force to lift it upward than flour, so the amplitude becomes smaller with the same vibration force. The impact force at the time of the collision becomes smaller, and the sieving speed becomes slower. This trend becomes the same as the mesh becomes finer.

Therefore, as shown in FIGS. 6 and 7, the step Y of the concavo-convex portion 15a provided in the center of the sieve screen 15 for sugar is made higher than that for wheat flour, so that the sieving speed can be made the same.

With the structure of this embodiment, since only the sieve net 15 vibrates, the sieve container 6 and main body 1 do not generate large vibrations, making it easy to use.

Figure 8 shows a pair of stirring blades 17 that perform the main functions of a hand mixer, such as whisking eggs and stirring food.
The shaft 1 of this stirring blade 17
7a is inserted into the connecting hole 5a of the worm wheel 5.

Effects of the Invention As described above, the sieving device included in the hand mixer of the present invention not only increases the sieving speed by changing the sieve mesh depending on the sieving material, but also generates large vibrations in the hand mixer body. Flour and sugar can be sieved efficiently without any problems. Moreover, since it is the same as the fitting part of the stirring blade, which is the main function, it is easy to use, and the outer surface of the main body is easy to clean, which is an excellent effect never seen before.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of essential parts of a hand mixer equipped with a sieving device showing an embodiment of the present invention, Fig. 2 is a plan view of a screen for sieving flour, etc., and Fig. 3 is A--A in Fig. 2. View from arrow A, Figure 4 is a plan view of the claw, Figure 5 is a sectional view taken along line B-B in Figure 4, Figure 6 is a plan view of the sugar sieve screen, and Figure 7 is C in Figure 6. - C arrow view, No. 8
The figure is a sectional view of the main parts of the hand mixer when the stirring blades are set. 1...Main body, 3...Rotary drive source (electric motor), 6
... Sieve container, 8 ... Rotating shaft, 15 ... Sieve net,
15a...Uneven portion.

Claims (1)

[Claims] 1. A main body having a rotational drive source, a rotating shaft that rotates in connection with the rotational drive source of this main body, supports a sieve container, and has a vertical convex portion formed at its lower end, and a convex portion of the rotary shaft. This hand mixer is equipped with a plurality of sieve nets having unevenness with different steps facing each other, and one of the sieve nets is vertically movable and detachably attached to a sieve container.