JPS6125368B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a beverage manufacturing machine that manufactures a beverage by pulverizing raw materials and supplying hot water to the pulverized raw materials.

This type of beverage making machine was recently invented to make delicious coffee at home.
The machine body is equipped with a crusher and a hot water supply device, and after coffee beans are crushed by the crusher, hot water is supplied from the hot water supply device to the crushed coffee powder to extract coffee. The switch device that selects the drive motor for the crushing body and the operating circuit of the water heater is configured such that, for example, when the neutral point is off and the operating body is rotated clockwise, the motor is turned on, and the operating body is rotated counterclockwise. It is of a rotary type, which turns on the operating circuit of the water heater when it rotates. However, according to the above configuration, when the operating body is rotated clockwise in order to turn off the operating circuit of the water heater, the operator accidentally rotates the operating body further clockwise beyond the neutral point and turns on the motor. If such an incorrect operation is performed, the coffee powder containing hot water may be stirred by the grinder and scattered around, potentially causing burns to the user.Additionally, the extracted coffee may become cloudy. It was hot.

The present invention has been made in view of the above-mentioned circumstances, and includes a switch device provided with a stopper for restricting the operating body from being moved beyond the neutral point in the direction in which the motor for driving the grinding body is turned on. By configuring the stopper to release the restriction when the switch is operated at a neutral point in a direction different from the on/off operation, it is possible to reliably prevent erroneous operation of the switch device, thereby reducing the risk of burns to the user. To provide a beverage manufacturing machine that does not cause the beverage to become cloudy.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 1.
This will be explained with reference to FIG. Reference numeral 1 denotes a machine body having a cup mounting section 2 at the lower right side, a motor storage section 3 erected on the left side, and a water tank section 4 having an open top surface above the motor storage section 3.
Reference numeral 5 denotes a case holder extending from the body 1 to the right side so as to be located a predetermined distance above the cup holder 2;
is a top plate extending to the right from the upper end of the body 1 so as to be located a predetermined distance above the case placement part 5. Reference numeral 7 denotes a heater in the shape of a flat container that constitutes a part of the hot water supply device 8. This heater is installed in the body 1 so that the upper surface faces the outside through a substantially circular opening 2a formed in the cup holder 2. A sheathed heater 9 as an operating device is arranged in a meandering manner at the inner bottom. 10 is a connection from the water tank section 4 to the heater 7
A water supply pipe 11 is introduced into the interior and arranged in a meandering manner along the sheathed heater 9, and 11 is a hot water pipe whose one end is connected to the outlet side of the water supply pipe 10 and is oriented upward. The outlet portion 11a is directed downward along the lower surface of the plate 6. 1
2 is a motor disposed in the motor storage section 3; 13;
is a drive shaft rotatably supported on the case mounting part 5, and a belt 16 is stretched between the pulley 14 fitted on the rotating shaft 12a of the motor 12 and the pulley 15 fitted on the drive shaft 18. has been done. Reference numeral 17 denotes a shaft joint fitted to the upper end of the drive shaft 18, and a portion thereof protrudes outward from an opening 5a formed on the upper surface of the case mounting portion 5. Reference numeral 18 denotes a case having a cylindrical shape with a bottom, in which a cutter shaft 20 is rotatably supported by a shaft cylinder portion 19 formed approximately at the center of the bottom, and a shaft coupling 17 is engaged with the lower end of the cutter shaft 20. A shaft joint 21 is fitted thereto, and a cutter 22 serving as a crushing body is screwed and fixed to the upper end. Reference numeral 23 indicates a filter located below the cutter 22 and removably mounted within the case 18, and 24 indicates a spout provided at the lower right end of the case 18. Reference numeral 25 denotes a lid that is removably fitted onto the upper surface of the case 18, and an inlet 25a facing the outlet 14a of the hot water pipe 14 is formed in the center of the lid.
A diffusion plate 26 is provided below.
Reference numeral 27 denotes a cup that is removably placed on the cup holder 2.

Now, 28 is a switch device located below the motor 12 and housed in the body 1, and this will be described in detail below. 29 is a main engine frame formed by bending a band-shaped metal plate into a substantially U-shape, and a rear plate 3 is attached to the rear end of the main engine frame.
0 is fixed. Reference numeral 31 denotes an insulating substrate fixed to the lower surface side of the main engine frame 29, and a substantially U-shaped movable contact plate 32 having first and second movable contact pieces 32a and 32b is fixed to the upper surface of this board by riveting. has been done. Reference numerals 33 and 34 denote first and second fixed contact pieces that are similarly fixed to the upper surface of the insulating substrate 31 by riveting, and are connected to the movable contact pieces 32a and 32, respectively.
It is facing b. 35 and 36 are main engine frame 29
The middle part and the rear end part of the operating shaft 37 are rotatably supported by shaft holes formed in the central parts of the front plate 29a and the rear plate 30, respectively. A cam 33 is attached to the operating shaft 37 and fixed by a roll pin 39. This cam engages with flat parts 37a and 37b (Fig. 4) formed on the operating shaft 37 and rotates together with the operating shaft 37. It's becoming like that. 4
0 and 41 are first and second cam ridges protruding from the cam 38, and are connected to the first and second movable contact pieces 32a, respectively.
32b, and are spaced 90 degrees from each other. Reference numeral 42 denotes a rotation regulating plate fixed to the front surface of the cam 38, and has one projecting piece 42a protruding from the outer circumference (FIG. 5). Reference numerals 43 and 44 denote first and second stoppers (Fig. 3) which are provided by cutting and raising the front plate 29a to protrude rearward. Located between 44
At the neutral point, the protruding piece 42a touches the first stopper 43
comes into contact with. Then, when the operating shaft 37 is rotated 45 degrees from the neutral point in the second direction, counterclockwise (direction of arrow A), the protrusion 42a abuts the second stopper 44, and the second cam ridge 41 is rotated. Second movable contact piece 3
2b, and the second movable contact piece 32
b and the second fixed contact piece 34 are closed (turned on) (see FIG. 6). 45 is a left-handed coil spring located between the cam 38 and the rear plate 30 so as to surround the operating shaft 37;
It is hung in a long hole 46 formed at the rear end, and the rear end is hung in a hook hole 47 formed in the rear plate 30. Therefore, the cam 38 is always urged forward by the coil spring 45, and the rotation regulating plate 4
2 is brought into contact with the front plate 29a. 48
numeral 49 is an engagement protrusion provided on the rear end of the cam 38 and protrudes toward the outer circumference, and 49 is a third stopper provided on the rear plate 30 by a cut-and-raised part to protrude toward the front. 38 is located at the neutral point, it is provided at an interval of 45 degrees to the right of the engaging protrusion 48. Now, at the neutral point, the operating shaft 37 is connected to the coil spring 45.
When the protruding piece 42a of the rotation regulating plate 42 is moved rearward against the urging force of the rotating member 42, the protruding piece 42a of the rotation regulating plate 42 separates from the first stopper 43. Then, while moving the operating shaft 37 backward, the clockwise direction (direction of arrow B), which is the first direction, is 45 degrees.
When rotated by °, the engagement protrusion 48 engages the third stopper 4.
9 and the first cam ridge 40 is in a position to press the first movable contact piece 32a, and the first movable contact piece 32a and the first fixed contact piece 33 are closed (on). (See Figures 7 to 9). Further, when the operating shaft 37 is rotated clockwise from the neutral point in this manner, the projection 42a rides on the rear end of the first stopper 43, and the forward return movement of the operating shaft 37 is restricted. Further, the coil spring 45 is tightened by the clockwise rotation of the operating shaft 37, and the rotational force in the counterclockwise direction (in the direction of arrow A) is increased. Therefore, if the holding of the operating shaft 37 is released while the operating shaft 37 is rotated clockwise,
The operating shaft 37 automatically rotates counterclockwise due to the rotational force exerted by the coil spring 45 and returns to the neutral point, and then closes the first stopper 4 at the neutral point.
When the protruding piece 42a that had been riding on the rear end of the coil spring 45 comes off, it is returned to the front by the forward biasing force of the coil spring 45. 50 is an articulation mechanism for giving a sense of articulation to the rotation of the cam 38;
52 is a leaf spring supported at both ends between holes 53 formed in the main engine frame 29, and 54 is a retainer in the middle of the leaf spring 52. When the cam 38 is located at the neutral point, the steel ball 54 is supported through the protrusion 5.
1 and 51 are engaged with each other.
Note that the spring force of the leaf spring 52 is set to be sufficiently smaller than the above-mentioned return rotational force caused by the coil spring 45. When the cam 38 is located at the neutral point as shown in FIG. The movable contact piece 32b is in a non-pressed state and is in an OFF state. Further, as shown in the electrical circuit diagram shown in FIG. 10, the movable contact plate 32 is connected to one power supply end 56, and the motor 12 is
The sheathed heater 9 is connected between the second fixed contact piece 34 and the other power terminal 57, and the sheathed heater 9 is connected between the second fixed contact piece 34 and the other power terminal 57. In FIG. 1, 58 is a knob attached to the operating shaft 37, and 59 is a lid detachably mounted on the top surface of the water tank 4.

Next, the operation of this embodiment configured as above will be explained. A predetermined amount of coffee beans is stored in the case 18, and a predetermined amount of water is previously supplied into the water supply tank 4, and the operating shaft 37 of the switch device 28, which is at the neutral point (off position), is moved backward using the knob 58. The projecting piece 42a is released from the rotation restriction by the first stopper 43, and then rotated clockwise (in the direction of arrow B) by 45 degrees, and the rotation return force of the coil spring 45 in the direction of arrow A is applied. Continuing to pick 5
8 and hold it in its rotating state. In this state, the first cam ridge 40 is connected to the first movable contact piece 32.
a, the first movable contact piece 32a and the first
When the fixed contacts 33 are closed (turned on), the motor 12 is energized (FIG. 8). Therefore,
A drive shaft 18 is rotationally driven via a belt 16,
Furthermore, the cutter 22 is rotationally driven via the shaft joints 17, 21 and the cutter shaft 20, and the rotation of the cutter 22 crushes the coffee beans, and the coffee powder ground to an appropriate coarseness is stored on the filter 23. . Now, when all the coffee beans are ground to an appropriate coarseness, when you release your hand from the knob 58, the above-mentioned rotation retention is released, and as mentioned above, the operating shaft 37 is moved by the coil spring 45.
is automatically rotated back in the direction of arrow A, elastically deforming the plate spring 52 of the articulation mechanism 50 and returning to the neutral point, and then further forward at the neutral point due to the spring force of the coil spring 45. At the same time, the first movable contact piece 32a is separated from the first fixed contact piece 33, and the relationship between the two is turned off and the motor 1
2 is cut off (Figure 4). Next, when the operating shaft 37 of the switch device 28 is rotated 45 degrees counterclockwise (in the direction of arrow A) using the knob 58, the second cam ridge 41 presses the second movable contact piece 32b, and the 2
The movable contact piece 32b and the second fixed contact piece 34 are closed (turned on) (FIG. 6). On the other hand, the hook hole 46
is formed in the shape of a long hole, so when the cam 38 is rotated in the direction of arrow B, the coil spring 45 is tightened, but when the cam 38 is rotated in the direction of arrow A, the hook hole 46 is tightened by the coil spring. The coil spring 45 moves in the direction of escaping from the front end of the coil spring 45.
No rotational force is applied to the knob 58, so even if the knob 58 is released, the operating shaft 37 remains rotated counterclockwise by the articulation mechanism 50. In this state, the second cam ridge 41 is
The movable contact piece 32b is pressed, and the second movable contact piece 32b and the second fixed contact piece 34 are closed (on).
be done. Therefore, the sheathed heater 9 is energized and generates heat, and the water in the water supply pipe 10 disposed in the heater 7 is heated to boiling water, rises in the water supply pipe 11, and is discharged from the outlet portion 11a. This exit part 1
The hot water discharged from 1a is diffused by the diffusion plate 26, dripped onto the coffee powder stored on the filter 23 of the case 18, passes through the coffee powder, and is filtered by the filter 23 to form a cup. 2
Coffee is extracted within 7 days. When the desired amount of coffee has been extracted into the cup 27, the operating shaft 37 is rotated 45 degrees clockwise (in the direction of arrow B) using the knob 58 to return it to the neutral point (Fig. 4). The heater 9 is cut off and the operation of the water heater 8 is stopped.
By the way, when the operating shaft 37 is rotated back clockwise to stop the hot water supply device 8 in this way, when the operating shaft 37 is rotated to the neutral point, the protruding piece 42a of the rotation regulating plate 42
is regulated by the first stopper 43,
Further rotation clockwise beyond the neutral point is reliably prevented.

As described above, according to this embodiment, the switch device 2
8 so that the motor 12 is turned on, the operating shaft 37 is moved rearward at the neutral point against the coil spring 45 to move the protrusion 42a of the rotation regulating plate 42 to the first stopper 43. Since the configuration is such that the control shaft 37 is released from the restriction by , and then rotated clockwise by 45 degrees, when the operating shaft 37 is rotated clockwise again to stop the operation of the water heater 8, the protrusion of the rotation restriction plate 42 is used. 42a comes into contact with the first stopper 43 and is reliably regulated at the neutral point. That is, in this embodiment, when operating the water heater 8, it is possible to prevent the user from erroneously turning on the motor beyond the neutral point, which is the case with conventional switch devices. There will be no burns or the coffee in the cup 27 will become cloudy.

Note that when the knob 58 is released while the motor 12 is turned on, the operating shaft 37 of the switch device 28 automatically returns to the neutral point, so that the coffee beans are not crushed excessively.

11 and 12 show another embodiment of the present invention, in which a lever-type switch device 60 is used instead of the rotary type described above, and an operating rod 61 as an operating body is set at a neutral point. When operated in the direction of arrow C, one contact piece 62a of the movable contact plate 62
comes into contact with the first fixed contact piece 63 side connected to the motor 12, and when the operating rod 61 is operated from the neutral point in the direction of arrow D, the other contact piece 62b of the movable contact plate 62 is connected to the sheathed heater 9. second fixed contact piece 64
switch to touch the side. Reference numeral 65 denotes a lever connected to the tip of the operating rod 61 in such a manner that only vertical movement is allowed, and one end of this lever projects outward from an elongated guide hole 66 formed in the fuselage body 1. The guide hole 66 is configured such that an intermediate portion 66a facing the neutral point of the switch device 60 is oriented in the vertical direction, and is on the left side (arrow D side) of the intermediate portion 66a.
is formed in the shape of a horizontal long hole that continues to the upper end of the intermediate portion 66a, and the portion on the right side of the intermediate portion 66a (arrow C side) is formed in the shape of a horizontal long hole that continues to the lower end of the intermediate portion 66a. ing. A tension spring 67 has one end connected to the lever 65 and the other end connected to the body 1 above the intermediate portion 66a.
In this configuration, when energizing the motor 12, the lever 65 is pushed down against the tension spring 67 and rotated in the rear arrow C direction. In addition, when energizing the sheathed heater 9, simply move the lever 65 from the neutral point to the arrow D.
Just rotate in the direction. Thus, the intermediate portion 66a acts as a stopper similar to the first stopper 43 of the previously described embodiment. That is, when the lever 65 is rotated back in the direction of arrow C to turn off the power to the sheathed heater 9 after brewing coffee, the intermediate portion 66a of the lever 65 moves beyond the neutral point of the switch device 60 and further in the direction of arrow C. This is to reliably prevent accidental rotation. Therefore, the same effects as those of the above embodiment can be obtained also in the configuration.

As explained above, the present invention can provide a beverage making machine that can reliably prevent erroneous operation of the switch device, eliminate the danger of burns to the user, and prevent the beverage from becoming cloudy.

[Brief explanation of the drawing]

1 to 10 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a top view of the switch device, FIG. 3 is a front view of the switch device, and FIG. 4 is a front view of the switch device. The figure is an enlarged sectional view taken along the - line in Fig. 2, Fig. 5 is an enlarged perspective view showing a partially cutaway switch device, Figs. 6 and 8 are views corresponding to Fig. 4 showing different operating states, Fig. 7 is a top view showing different operating states, Fig. 9 is a view equivalent to Fig. 5 showing different operating states, Fig. 10 is an electric circuit diagram, and Figs. 11 and 12 are other embodiments of the present invention. It shows
FIG. 11 is a front view, and FIG. 12 is a longitudinal sectional view of the main part. In the drawing, 1 is the machine body, 7 is a heater, 8 is a water heater, 9 is a sheathed heater (operating device), 12 is a motor, 22 is a cutter (pulverizer), 28 is a switch device, 37 is an operating shaft (operating device) ), 38 is cam, 42
43 is a rotation regulating plate, 43 is a first stopper, 45 is a coil spring, 60 is a switch device, 61 is an operating rod (operating body), 66 is a guide hole, 66a is an intermediate part (stopper), and 67 is a tension spring. be.

Claims (1)

[Scope of Claims] 1. A motor that drives a pulverizing body that pulverizes raw materials such as coffee, a hot water supply device that supplies hot water to the pulverized raw materials, and a first motor with a neutral point OFF and a first and a switch device having an operating body capable of reciprocating in a second direction, and when the operating body is moved in the first direction, the motor is turned on, and when the operating body is moved in the second direction, the operating circuit of the water heater is turned on. In the switch device, the switch device has a stopper that restricts the operating body from being moved in the first direction beyond the neutral point, and the operating body performs an on/off operation at the neutral point. 2. A beverage making machine characterized in that when the operating body is operated in a different direction, the restriction by the stopper is released and movement of the operating body in the first direction is permitted. 2. According to claim 1, the switch device has a spring means that is activated when the operating body is moved from the neutral point in the first direction to return the operating body to the neutral point. beverage making machine.