JP4483019B2 - Switch with safety mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a switch with a safety mechanism used in a rotary cooker or the like.
[0002]
[Prior art]
A conventional rotary cooker or the like that does not turn on when there is no cooking container and is turned off when the cooking container is removed during operation is described in, for example, Japanese Patent Publication No. 4-55059. A push button type switch with a safety mechanism was used like a conventional one.
[0003]
[Problems to be solved by the invention]
However, the switch with a push button type safety mechanism as described above has a problem that when the switch button is arranged on the side surface of the main body, the switch button is pushed from the side and the main body is easy to move.
[0004]
The present invention solves the above-described conventional problems, and an object of the present invention is to provide a switch with a safety mechanism that is easy to use even when a switch button is arranged on the side surface of the main body.
[0005]
[Means for Solving the Problems]
In order to solve this problem, in the switch with a safety mechanism of the present invention, the safety mechanism is attached to the switch operated by rotating the operation shaft.
[0006]
Thereby, a switch with a safety mechanism that can perform a rotary operation without pressing the main body from the side is obtained.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, an operation shaft is freely loosely fitted to the frame, and a fixed cam and a lock cam having a drive hook and a first release arm are fixed to the operation shaft, and a latch claw and a switch contact are fixed. A movable cam provided with an operating portion is rotatably fitted, and a slide plate having a locking claw, a first release cam, and a second release cam, a lock claw, and a second release arm are mounted on the frame body. A detection plate provided so as to freely reciprocate, and the drive hook and the movable cam; the first release arm and the first release cam; the second release arm and the second release cam; The latch claw and the locking claw, the switch contact operating portion and the switch contact, the lock claw and the lock cam are arranged to be disengaged from each other, and the movable cam is connected to the switch contact from the switch contact. Only withdrawal The latch claw is engaged with the lock cam in the direction in which the latch claw is detached from the locking claw, the slide plate is engaged in the direction in which the locking claw is engaged with the latch claw, and the first locking claw is engaged with the lock cam. 2 is a switch with a safety mechanism that is urged in the direction in which the release arm engages with the second release cam, and when the cooking plate is configured to reciprocate the detection plate, the switch is locked when there is no cooking vessel. It has a function of returning to a position where it can be switched off when the cooking container is removed during operation.
[0008]
In a second aspect of the present invention, a current breaker with a reset button is provided, and the movable cam is provided with a reset button operating portion that engages and disengages with the reset button of the current breaker, and the movable cam is biased in the biased direction. The reset button operation part and the reset button are arranged in the direction of engagement, and when the current breaker is operated, the reset button of the current breaker is pushed when returning to the position where the switch is turned off. It has the effect that a switch with a mechanism is obtained.
[0009]
According to the third aspect of the present invention, a seesaw type switch button is pivotally supported on the operation shaft, and a switch with a safety mechanism capable of seesaw type switch operation is obtained.
[0010]
According to the fourth aspect of the invention, the switch contact and the current breaker are two parts of a seesaw switch with a built-in current breaker, and a current breaker that can be easily reset and a switch having a safety mechanism can be simplified. Has an effect.
[0011]
【Example】
Example 1
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0012]
2, 4, 6, and 8 show the case where the switch contact 13 is in the “OFF” state, and FIGS. 1, 3, 5, and 7 show the case where the switch contact 13 is in the “ON” state, respectively. In FIG. 1 to FIG. 9, reference numeral 1 denotes an operation shaft rotatably attached to the frame body 2, and a fixed cam 3 and a lock cam 4 are fixed to the operation shaft 1 and a movable cam 5 is rotatable. The slide plate 6 and the detection plate 7 are attached to the frame body 2 so as to be reciprocally movable.
[0013]
The fixed cam 3 is provided with a drive hook 8 that engages with the movable cam 5 and a first release arm 10 that engages with a first release cam 9 provided on the slide plate 6, and the movable cam 5 has a slide. A latch claw 12 that engages with the locking claw 11 provided on the plate 6 and a switch contact operating portion 14 that operates the switch contact 13 are provided. A second release cam 15 provided on the slide plate 6 is provided on the detection plate 7. The second release arm 16 that engages with the lock cam 4 and the lock claw 17 that engages with the lock cam 4 are provided.
[0014]
Further, the movable cam 5 is urged by a tension coil spring 18, the slide plate 6 is urged by a compression coil spring 19, and the detection plate 7 is urged by a compression coil spring 20.
[0015]
The switch assembly configured as described above, for example, as shown in the mixer of FIG. 9, when the mixer cup 21 is placed on the main body 22, the detection plate 7 is lowered by its weight, and the mixer cup 21 is removed. The detection plate 7 is arranged so as to be raised upward by the compression coil spring 20, and a knob 23 is attached to the operation shaft 1 to operate as a rotary switch.
[0016]
Next, the operation of this embodiment will be described. In the mixer configured as described above, when the mixer cup 21 is not on the main body 22, the detection plate 7 is moved in the B direction by the compression coil spring 20, and the lock claw 17 is engaged with the lock cam 4 and operated. When the shaft 1 is prevented from rotating and cannot be operated, and the mixer cup 21 is present, the weight of the mixer cup 21 moves the detection plate 7 in the direction A against the compression coil spring 20, and the lock claw 17 is locked to the lock cam 4. And the second release arm 16 provided on the detection plate 7 is also released from the second release cam 15 provided on the slide plate 6 so that the slide plate 6 can reciprocate. At this time, when the knob 23 is operated and the operation shaft 1 is turned in the A direction, the drive hook 8 of the fixed cam 3 hooks the movable cam 5 and rotates in the A direction against the tension coil spring 18. The switch contact operating section 14 engages the locking claw 11 provided on the slide plate 6, which is urged in the A direction by the compression coil spring 19 with the switch contact 13 in the “ON” state, and is in this position. Retained. Further, from here, when the knob 23 is operated and the operation shaft 1 is turned in the B direction, the first release arm 10 of the fixed cam 3 comes into contact with the first release cam 9 to move the slide plate 6 in the B direction, and the locking claw 11. Is released from the latch claw 12 and the movable cam 5 is returned to the B direction by the tension coil spring 18 so that the switch contact operating portion 14 is separated from the switch contact 13 to be in a “cut” state. Further, when the mixer cup 21 is removed from the state in which the switch contact 13 is “ON”, the detection plate 7 is moved in the B direction by the compression coil spring 20, and the second release arm 16 is provided on the slide plate 6. The slide plate 6 is moved in the B direction against the compression coil spring 19 by hitting the release cam 15, and the latching claw 11 provided on the slide plate 6 is disengaged from the latch claw 12, and the movable cam 5 is moved in the B direction by the tension coil spring 18. The switch contact operating portion 14 is rotated away from the switch contact 13 and returns to the “cut” state, and the operation shaft 1 is also rotated in the direction B by the fixed cam 3 being hooked on the drive hook 8 and returned to the “cut” position. .
[0017]
As described above, when the detection plate 7 is reciprocated by the cooking container and the cooking container is not present, the switch is not locked, and the rotary switch returns to the position where the switch can be turned off when the cooking container is removed during operation. Can be obtained.
[0018]
(Example 2)
Next, a second embodiment of the present invention will be described. 10 and 11, the movable cam 5 is provided with a reset button operation unit 24, and the current breaker 26 is arranged at a position where the reset button operation unit 24 is operated by the reset button operation unit 24 at the “OFF” position. ing. Since other configurations are the same as those in the first embodiment, the same reference numerals are given, and descriptions thereof are omitted.
[0019]
In the switch configured as described above, when the current breaker 26 operates, when the switch is returned to the “OFF” position, the reset button 25 of the current breaker 26 is operated, and the reset can be easily performed. .
[0020]
Example 3
Next, a third embodiment of the present invention will be described. In the embodiment shown in FIGS. 11 and 12, a seesaw type switch button 27 is pivotally supported on the operation shaft 1 so that the head of the seesaw type switch button 27 can be seen through the opening 27 of the machine body. Since other configurations are the same as those in the first embodiment, the same reference numerals are given, and descriptions thereof are omitted.
[0021]
And by comprising as mentioned above, when there is no cooking container, the switch is locked and cannot be entered, and a seesaw type switch that returns to the position where the switch is turned off when the cooking container is removed during operation can be obtained.
[0022]
(Example 4)
Next, a fourth embodiment of the present invention will be described. In the embodiment shown in FIG. 13, the rotation center of the knob portion 30 of the seesaw switch 29 with a built-in current breaker is attached so that the center of rotation coincides with the operation shaft 1. One component of the switch 29 is used. Since other configurations are the same as those in the first embodiment, the same reference numerals are given, and descriptions thereof are omitted.
[0023]
And by configuring as described above, when there is no cooking container, the switch is locked and the safety mechanism that returns to the position where the switch is turned off when the cooking container is removed during operation, and the current breaker that can be easily reset It is possible to simplify and configure a switch having
[0024]
【The invention's effect】
As described above, according to the first aspect of the present invention, the detection plate is reciprocated in the cooking container by the action of the fixed cam, the lock cam, the movable cam, the slide plate and the detection plate provided on the operation shaft. Then, when there is no cooking container, the switch is locked and does not enter, and when the cooking container is removed during operation, the switch is returned to the position where the switch can be turned off.
[0025]
In the invention according to claim 2, since the reset button of the current breaker with a reset button is operated by the reset button operation portion provided on the movable cam, when the current breaker is operated, when the switch is turned off, the current breaker The reset button is pressed, and a switch with a safety mechanism that can be easily reset is obtained.
[0026]
The invention according to claim 3 has an effect that a seesaw type switch button is pivotally supported on the operation shaft, and a switch with a safety mechanism capable of seesaw type switch operation is obtained.
[0027]
According to the invention of claim 4, the two parts of the switch contact and the current breaker are one part of the seesaw switch with a built-in current breaker, and the current breaker that can be easily reset and the switch having a safety mechanism are simplified. The effect that it can be obtained.
[Brief description of the drawings]
FIG. 1 Front exploded view of a switch with a safety mechanism according to Embodiment 1 of the present invention. FIG. 2 Front exploded view of the switch. FIG. 3 Front exploded view of the switch. Rear exploded view [Figure 5] Left side view of the switch [Figure 6] Left side view of the switch [Figure 7] Right side view of the switch [Figure 8] Right side view of the switch [Figure 9] Fig. 10 is a front sectional exploded view of a switch with a safety mechanism according to Embodiment 2 of the present invention. Fig. 11 is an exploded front view of the switch according to Embodiment 2 of the present invention. Fig. 12 is a safety according to Embodiment 3 of the present invention. Side view of switch with mechanism [FIG. 13] Side view of the switch [FIG. 14] Side view of switch with safety mechanism of Example 4 of the present invention [Explanation of symbols]
Reference Signs List 1 operation shaft 3 fixed cam 4 lock cam 5 movable cam 6 slide plate 7 detection plate 8 drive hook 9 first release cam 10 first release arm 11 locking claw 12 latch claw 13 switch contact 14 switch contact operation unit 15 2nd Release cam 16 Second release arm 17 Lock claw 24 Reset button operation section 26 Current breaker 27 Seesaw switch button 29 Seesaw switch with built-in current breaker

Claims (4)

With switch contacts,
Freely fit the operation shaft to the frame body,
In the operation axis,
A fixed cam with a drive hook and a first release arm ;
And to fit Yu rotatably movable cam having a latch pawl and switch contact operation part is fixed to locking cam,
In the frame ,
A slide plate having a locking claw, a first release cam, and a second release cam ;
And locking claws and to fit Yu reciprocably sensing plate having a second release arm,
The drive hook and the movable cam;
The first release arm and the first release cam;
The second release arm and the second release cam;
The latch claw and the locking claw,
It said switch contact and said switch contact operation section,
The and the locking pawl lock cam is,
Respectively placed so as to engage disengaged,
In the direction in which the switch contact operating part is detached from the switch contact and the latch claw is separated from the locking claw , the movable cam.
Said slide plate, in a direction in which the locking pawl is engaged with the latch pawl,
In the direction in which the lock claw engages the lock cam and the second release arm engages the second release cam ,
Each switch with safety mechanism energized. It has a current breaker with a reset button,
The movable cam is provided with a reset button operation part that engages and disengages the reset button of the current breaker,
The switch with a safety mechanism according to claim 1, wherein the reset button operation unit and the reset button are arranged in an engaging direction with respect to a direction in which the movable cam is urged.   The switch with a safety mechanism according to claim 1 or 2, wherein a seesaw type switch button is pivotally supported on the operation shaft.   The switch with a safety mechanism according to claim 3, wherein the switch contact and the current breaker are a seesaw switch with a built-in current breaker.

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