JPS6245625Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a safety device for electric mixers used in general households.

Conventional configuration and its problems In general, electric mixers are designed so that the switch button that operates the motor control switch can only be activated after the container is placed on the mixer body. As shown in FIGS. 1 and 2, the mixer body 1 is provided with a movable shaft 2 that can move up and down, and when a container (not shown) is placed on the mixer body 1, the movable shaft 2 is moved downward. The movable shaft 2 pushes one end of a rotatable lever 4 whose central part is supported by the shaft 3 on the mixer main body 1, and the other end of the lever 4 pushes the sliding plate 6 of the switch 5. The switch button 7 is slid to release the lock, but in order to perform these operations smoothly, a gap must be provided between the lever 4, the shaft 3, and the lever support 8. Therefore, the lever 4 becomes loose. On the other hand, since the sliding plate 6 of the switch 5 is always urged in the direction of the lever 4 by the return spring 9 as shown in FIG. However, there is a problem in that the release position becomes unstable, and as a result, the reliability of the operation of the safety device is lost.

Purpose of the invention In view of the above-mentioned conventional problems, the purpose of the invention is to provide a safety device for an electric mixer that can always stabilize the locking and unlocking positions of the sliding plate even if the lever becomes loose. That is.

Structure of the invention In order to achieve the above object, the present invention is a rotatable shaft whose one end is connected to the lower end of a movable shaft provided on the mixer main body so as to be movable up and down, and whose central part is supported by the shaft on the mixer main body. The mixer body is equipped with a protrusion that slides between both sides of the other end of the lever. With this configuration, even if there is looseness between the lever and the shaft, the protrusion on the mixer body can be easily inserted into the mixer body. The position of the lever in the rattling direction can be restricted by the protrusion, and as a result, the movement of the sliding plate whose end slope is in contact with the side surface of the other end of the lever can also be stabilized. can operate reliably.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 3 to 8, 11 is the mixer main body, 12 is a container that is detachably placed on the mixer main body 11, and 13 is the mixer main body 11.
The upper end of this movable shaft 13 protrudes upward from the mixer main body 11, and when the container 12 is placed on the mixer main body 11, the rib provided inside the lower part of the container 12 14 and moves downward. 15 connects the shaft 1 to the mixer main body 11 via a lever support 16.
This lever 15 is a rotatable lever whose central part is supported by
The lower ends of are connected. Reference numeral 18 denotes a motor control switch attached to the mixer main body 11, and the switch 18 is provided with a sliding plate 19 having an inclined surface 19a at its end, which is in contact with the side surface of the other end of the lever 15. Reference numeral 20 denotes a plurality of operating plates that move in a direction perpendicular to the sliding plate 19;
A switch button 21 is fixed to each. Further, the sliding plate 19 is formed with a notch 19b in which the convex portion 20' of the operating plate 20 engages, and a flat part 19c adjacent to the notch 19b, at a position facing the plurality of operating plates 20. ing. A coil spring 22 is attached between one end of the lever 15 and the lever support 16, and this coil spring 22 constantly urges the movable shaft 13 connected to the one end of the lever 15 upward. 23 is a spring for returning the operating plate 20, and this spring 23 always urges the switch button 21 upward. 24 is the sliding plate 19
This spring 24 biases the end inclined surface 19a of the sliding plate 19 in a direction in which it always comes into contact with the side surface of the other end of the lever 15. Reference numeral 25 denotes a protrusion that slidably sandwiches both sides of the other end of the lever 15, and this protrusion 25 is provided on the mixer main body 11, as shown in FIGS. 3 and 4.

The operation in the above configuration will be explained. When the container 12 is placed on the mixer main body 11 as shown in FIG. 17 as a fulcrum. As a result, the other end of the lever 15 moves upward to the state shown in FIG. ' are opposed to each other, so when the switch button 21 is pressed in this state, the operating plate 20 moves downward and the protrusion 20' engages with the notch 19b. As a result, the sliding plate 19 is locked and the motor control switch 18 is turned on.

On the other hand, in this state, when the container 12 is removed from the mixer main body 11, the movable shaft 13 is pushed upward by the spring force of the coil spring 22, and the other end of the lever 15 is moved downward, as shown in FIG. do. At this time, the other end of the lever 15 is connected to the inclined surface 19.
a to move the sliding plate 19 from the state shown in FIG.
Push it to the left to move it, as shown in Figure b.
As a result, the convex portion 20' of the operating plate 20 is
As shown in FIG. 6b, since the shape faces the flat part 19c of the sliding plate 19, even if the switch button 21 is pressed in this state, the convex part 19c of the operating plate 20
0' comes into contact with the flat portion 19c of the sliding plate 19, and therefore, in this state, the motor control switch 18 cannot be turned on.

As mentioned above, in one embodiment of the present invention,
By moving the sliding plate 19 by rotating the lever 15, it is possible to enable or disable the operation of the switch button 21. However, in order to rotate the lever 15 smoothly, The lever 15, shaft 17 and lever support 16
Therefore, if the lever 15 becomes loose due to this gap, the notch 19b of the sliding plate 19 and the operating plate 2
The positional relationship between 0 and the convex portion 20' becomes unstable. However, in one embodiment of the present invention, since the mixer main body 11 is provided with the protrusion 25 that slidably sandwiches both sides of the other end of the lever 15, the position of the lever 15 in the wobbling direction is restricted. It is something that can be done.

Effects of the Invention As described above, according to the present invention, the protrusion slidably engages both sides of the other end of the rotatable lever that is actuated via the movable shaft when the container is placed on the mixer main body. is provided on the mixer body, so even if there is any wobbling between the lever and the shaft that rotatably supports the lever, the protrusion can restrict the position of the lever in the wobbling direction. As a result, the movement of the sliding plate whose end inclined surface contacts the side surface of the other end of the lever can also be stabilized, so that the safety device can be operated reliably.

[Brief explanation of the drawing]

Fig. 1 is a partial side sectional view showing a conventional safety device of an electric mixer, Fig. 2 is a side view of the same safety device, and Figs. 3 and 4 are a safety device of an electric mixer showing an embodiment of the present invention. Partial side sectional view of FIG. 5a,
b is a front view showing the relationship between the lever, sliding plate, and operating plate in the same safety device, Figures 6a and b are partial perspective views showing the relationship between the protrusion of the operating plate and the sliding plate, and Figure 7 is the same. FIG. 8, a side view of the safety device, is a partial perspective view showing the relationship between the lever and the protrusion. 11...mixer body, 12...container, 13...
...Movable axis, 15...Lever, 17...Axis, 18...
...Switch for motor control, 19...Sliding plate, 1
9a... Slanted end surface of sliding plate, 25... Protrusion.

Claims (1)

[Scope of utility model registration request] A mixer main body, a container removably placed on the mixer main body, a movable shaft provided on the mixer main body and movable up and down that moves downward when the container is placed on the mixer main body, and this movable shaft. A rotatable lever whose one end is connected to the lower end of the mixer and whose central part is supported by a shaft on the mixer body, and a sliding lever whose end slope is in contact with the side surface of the other end of the lever. A safety device for an electric mixer, comprising: a switch for controlling a motor having a plate; and a protrusion on the mixer main body that slidably inserts both sides of the other end of the lever.