JPH0113367B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooking device, and its purpose is to provide a cooking device that can perform functions such as bread kneading, whisking, cutting, and grinding with one device. It is something.

Conventionally, the number of rotations of the blades for bread kneading and whisking has been
Relatively large torque is required at 300 to 400r.pm, and food processors require a torque of 1500r.pm to 2000r.p.
m. This also required torque. For this reason,
Induction motors were used for bread kneading and whipping, and commutator motors were used for food processors, so each motor was used to suit its characteristics. For this reason, it has been considered difficult to obtain a single motor that satisfies these separate functions.

The present invention obtains these different speed and torque characteristics using a single motor, and is characterized by a combination of a belt and pulley speed reducer and a planetary gear speed reducer.

In addition, if you use the food processor at high speed when it should be used at low speed, for example, if you use a food processor to perform heavy-load tasks such as bread kneading, it is extremely dangerous and may damage the equipment itself. There is a risk that it will happen.

The present invention aims to provide a cooking appliance that can change the reduction ratio while ensuring safety so that such a problem does not occur.

When a commutator motor is used as the motor, the required reduction ratio is a combination of approximately 1/4 to 1/7 to 1/20 to 1/50. Therefore, the present invention uses a pulley and a belt as the first stage deceleration method.
The speed is reduced to 4 to 1/7, and the second stage planetary gear reduces the speed to 1/5 to 1/7, resulting in a total reduction ratio of 1/20 to 1/50 for the first and second stages. It is. In addition, the outer internal gear of the planetary gear reducer is fixed so that it does not function as a reducer, so that the speed of only the first stage can be obtained.

Hereinafter, the configuration will be explained according to the drawings shown as one embodiment of the present invention. In Figure 1, 1 is a motor, 2 is a small pulley fixed to the motor shaft,
3 is a belt, 4 is a large pulley, 5 is a driven shaft fixed to the large pulley, 6 is a one-way clutch device, 7
is a sun gear of the planetary gear reducer, which is fitted with the driven shaft 5. Reference numeral 8 denotes a case housing the planetary gear reducer, and this case is fixed to the outer internal gear of the planetary gear reducer, and is also connected to the one-way clutch device 6 through an insert part 9 fixed to the cylindrical part of the case. Fixed. 10 is an output shaft of the planetary gear reducer, and 11 is a lower connector fixed to the output shaft of the planetary gear reducer. 12 is an upper connector that fits into the lower connector 11, and 13 is a main shaft fixed to the upper connector 12, on which various cooking attachments A are detachably attached. 14 is an oil seal, and 15 is a bearing. 16 is a sleeve-length oil-impregnated bearing, 17 is a bearing mounting base, 18 is a chassis, 19 is a main body, 20 is a back plate, 21 is a container, 2
2 is the lid of the container. FIG. 2 is a plan view of FIG. 1, and 23 is a selector switch. A cam 24 is interlocked with a selector switch, and the direction of rotation of the motor 1 and the cam 24 are switched by operating the selector switch. 25 is a brake arm, and 26 is a brake spring. Since the brake arm 25 is pressed against the cam 24 by a brake spring 26, when the cam 24 is switched, the brake arm is pressed against the gear case 8 via the brake pad 27, and then separated.

Since the present invention has the above-described structure, when the rotation direction of the motor 1 is the same as the direction in which the one-way clutch device 6 is released, the positions of the selector switch 23 and the brake arm 25 are set to the gear case 8. It is in the position where it is locked and fixed. At this time, the power transmitted from the motor 1 is transmitted to the large and small pulleys 2,
4 to the sun gear 7 of the planetary gear reducer. The output from the planetary gear reducer is transmitted to the main shaft 13 via the output shaft 10. In this case, the ratio between the rotational speed of the motor 1 and the rotational speed of the main shaft 13, that is, the reduction ratio, is the product of the reduction ratio of the pulleys 2 and 4 and the reduction ratio of the planetary gear reduction gear. The former is 1/5, the latter is 1/
If it is 7, the ratio will be 1/35. Further, when the rotational direction of the motor 1 is the same as the locking direction of the one-way clutch device 6, the selector switch 23 and the brake arm 25 are in a position to release the gear case 8. Therefore, the rotation of the motor 1 is transmitted to the driven shaft 5 via the pulley, and the force engaged by the one-way clutch device 6 is transmitted to the gear case 8 via the insert portion 9. Since the gear case 8 is integrated with the outer internal gear of the planetary gear reducer, in this state it is also fixed to the sun gear 7 fitted with the driven shaft 5, and is one of the three elements of the planetary gear reducer. Since these two elements are fixed, the output shaft 10, which is another element, is also fixed, and the output shaft 10 and the driven shaft 5 rotate as one. Therefore, the reduction ratio between the main shaft 13 and the motor 1 is equal to the reduction ratio of the pulley, which is 1/5.
becomes.

As described above, in the present invention, the selector switch 23
The rotation direction of the motor 1 is changed by the cam 24, which is linked to the selector switch, and the gear case 8 is released and locked at the same time, thereby adjusting the reduction ratio according to the functions such as bread kneading, whisking, cutting, and crushing. Now we can provide a cooker that can be switched.

Also, since the direction of rotation of this cooker changes when the reduction ratio changes, the fitting part of the attachment should be designed to prevent danger from accidentally moving at high speed with the low speed attachment. was completed.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the mechanism of the present invention, Fig. 2 is a plan view thereof, 1... motor, 2, 4... pulley, 3... belt, 6... one-way clutch device, 7... sun gear , 8...Case, 9...Insert part, 10...
...Output shaft, 18... Chassis, 23... Selector switch, 25... Brake arm.

Claims (1)

[Claims] 1. A motor, a driven shaft to which the power of this motor is transmitted via a belt and a pulley, an output shaft to which power is transmitted from this driven shaft via the carrier part of the planetary gear, and a drive shaft that receives power from this output shaft. The driven shaft is connected to the sun gear of the planetary gear, and a one-way clutch device is provided between the driven shaft and the outer gear of the planetary gear to change the direction of rotation of the motor. The outer gear of the planetary gear is unlocked when the two are connected, and the outer gear of the planetary gear is unlocked when the two are released. A cooking device characterized by fixed gears.