JPH0587243B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a household electric cooking machine such as a mixer.

Conventional technology Conventionally, this type of electric cooking machine has a rotating cutter with a plurality of blades installed at the bottom of the pot into which ingredients such as fruits are placed, and the cutter is inserted into the main body via a connector. It has a structure that crushes and cuts the material in the coppice by driving it with a motor.

As shown in Figure 3 A and B, the cutter 1 has two upper and lower parts.
The number of blades is 4. The upper cutter 2 mainly serves to cut and stir the material, and the lower cutter 3 serves to finely cut and crush the material. That is, the bottom plate 5 facing the lower cutter 3 is provided with ribs 4 radially, and the material is finely cut between the ribs 4 and the lower cutter 3.

Problems to be solved by the invention However, with such a structure, the bottom plate 5
Each time the cutter 3 passes over the rib 4 of the cutter 3, large pressure fluctuations occur periodically, and unpleasant noises are generated due to this pressure fluctuation. In other words, the bottom plate 5
The number of blades of the lower cutter 3 facing the can be considered to be two, and the number of ribs 4 on the bottom plate 5 is often an even number due to manufacturing reasons, and most of them are eight. Therefore, when one blade passes over the rib 4 of the bottom plate 5, the other blade also necessarily passes over the other rib 4. In other words, since the pressure fluctuations between the two blades and the ribs occur simultaneously, the pressure fluctuations are intensified, resulting in a problem of causing large noise.

Means for Solving the Problems The technical means of the present invention for solving the above problems is that the plurality of blades of the cutter facing the bottom plate and the plurality of ribs of the bottom plate are simultaneously in the same cutting state. To prevent this, the number of blades and ribs is a number that does not have a common divisor other than 1, the ribs are non-uniformly spaced, or the blades are asymmetrical.

Effect The effect of this technical means is as follows.

That is, to explain using an example of the number of blades, when the number of blades of the cutter is two, when one blade passes over the ribs of the bottom plate, the other blade is located between the ribs. In other words, 2
Since the pressure fluctuations caused by two blades do not occur simultaneously, the pressure fluctuations are not intensified, and the noise generated as a result of the pressure fluctuations is also smaller than before.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 11 is a driving motor, which is connected to the main body 14 by anti-vibration rubbers 12 and 13.
It is elastically supported. 15 is the rotor of the motor 11, 16 is its rotating shaft, bearings 19 are fixed to the front bracket 17, the rear bracket 18,
20 and is held with a gap 22 between it and the stator 21. Reference numeral 23 indicates the lower part of the connector fixed to the rotating shaft 16. 24 is a pot for putting ingredients such as fruits, which is screwed onto a pot stand 25;
It is placed on the main body 14. Reference numeral 26 denotes a tip bottom plate, which is held in place via a seal 27 when the tip 24 is screwed onto the tip base 25. 32 and 33
is a cutter for cutting and crushing materials such as fruits, and is fixed to one end of a cutter shaft 30 supported by a bearing 29 fixed to a bottom plate 26. 3
1 is on the connector fixed to the other end of the cutter shaft 30, and has a structure that fits into the lower connector 23 when the tip base 25, which holds the tip bottom plate 26 and screws the tip 24, is placed on the main body 14. It's summery.

As shown in FIGS. 2A and 2B, the cutters 32 and 33 are composed of two left-right symmetrical upper and lower cutters, and the number of blades is four when viewed from the cutter shaft 30. The upper cutter 32 mainly serves to cut and stir the material, and the lower cutter 33 serves to finely cut and crush the material. That is, ribs 34 are provided radially at equal intervals on the surface of the bottom plate 26 facing the cutter bottom 33, and the material is finely cut between the ribs 34 and the cutter bottom 33. There is. In this embodiment, the number of ribs 34 is seven.

Next, the operation of the configuration of this embodiment will be explained. The tip 24 is screwed onto the tip base 25, and the tip bottom plate 26 is clamped through the seal 27 and placed on the main body 14. At that time, the upper connector 31 and the lower connector 23 fit together. Next, add ingredients such as fruits 2
4 and drive the motor 11, the material is crushed and cut by the cutters 32 and 33. At this time, the material is cut more finely between the cutter bottom 33 and the ribs 34 of the tip bottom plate 26. Katsuta bottom 33
When one of the blades 35 passes over one of the ribs 34, the material is compressed between them and a rapid pressure fluctuation occurs. Noise is generated due to this pressure fluctuation, but since there are seven ribs 34, when one blade 35 passes over the ribs 34, the other blade 36 passes between the ribs 34. , where no sudden changes in pressure occur. In other words, compared to the conventional 8 ribs, there is no sudden pressure change on both blades at the same time, so the overall pressure change is smaller and the noise generated is reduced. Ru. The above relationship holds true when there is no common divisor other than 1 between the number of cutter blades facing the ribs and the number of ribs. In other words, at this time, sudden pressure changes are not applied to multiple blades at the same time.

Note that the above example shows a case where the ribs are arranged radially at equal intervals and the cutters are point symmetrical, but the same effect as above will not be obtained even if the ribs are unevenly spaced and the cutters are asymmetrical. You can expect it.

Effects of the Invention As described above, according to the present invention, each blade and rib are set so that the plurality of ribs of the bottom plate and the plurality of blades of the cutter facing the ribs do not simultaneously have the same cutting state. As a result, the pressure change between the cutter and the rib is smaller overall than in the past, and the noise caused by this pressure change can be greatly reduced, making it extremely useful in practice.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an electric cooking machine according to an embodiment of the present invention, Figs. 2A and B are a plan view and a longitudinal sectional view of the cutter portion of the electric cooking machine, and Figs. FIG. 2 is a plan view and a longitudinal cross-sectional view of a cutter portion of the electric cooking machine. 11...Motor, 14...Main body, 24...Cop, 26...Cop bottom plate, 32, 33...Cut, 34...Rib.

Claims (1)

[Claims] 1 A driving motor supported by the main body, a tip placed on the main body, and a plurality of blades when viewed from the center of the cutter shaft driven by the motor to cut the material in the tip, It has a cutter to be crushed and a plurality of ribs provided radially on the surface of the bottom plate facing the cutter, and the number of blades and ribs is set to other than 1 so that the blades and ribs are not in the same cutting state at the same time. An electric cooking machine having any of the following configurations: the ribs are non-uniformly spaced, and the blades are asymmetry.