JPH0348820Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a limit switch in which when a controlled object such as a shutter matches an arbitrarily set position, a micro switch is activated and outputs a position signal of the shutter, etc. In particular, the present invention relates to a limit switch that has a simple structure and allows the signal output position of the limit switch to be easily and accurately set.

[Prior Art] For example, a limit switch has conventionally been used to detect a preset stop position of a shutter and stop the shutter from moving up and down.

This limit switch has a rotation storage mechanism that is linked to the vertical movement of the shutter, and a cam ring that is linked to the rotation storage mechanism. When the shutter comes to a stop position, the cam wheel operates a micro switch connected to a shutter drive control device to stop the shutter at a predetermined position.

By the way, when adjusting the limit switch to set the shutter stop position, it is necessary to move the shutter up and down electrically to the desired position, and during that time it is necessary to prevent the micro switch from operating. be. Therefore, conventional limit switches are equipped with a reset mechanism that sets the rotational memory mechanism that stores the position of the controlled object to the origin position, and a mechanism that fixes the microswitch in a constant state. It was operated separately.

[Problems to be solved by the invention] However, when setting the stop position of the shutter, the micro switch is fixed and the shutter is moved electrically to set it to the desired limit position. continues to rotate. Therefore, after setting the limit position, it is necessary to release the fixation of the microswitch and reset the rotation storage mechanism to the origin position in a separate operation, which not only makes setting the limit position troublesome but also requires a separate operation. When resetting to the origin position, there was a problem that depending on the reset method, the origin position may not be set accurately.

Furthermore, when resetting the rotation storage mechanism, the actuator of the microswitch and the like come into contact with the cam ring and apply a load.

That is, at the time of the reset operation, the cam wheel and rotation storage mechanism are not in a state where they can rotate completely freely, but are in a state where a certain amount of load is applied to them. Therefore, the above-mentioned resetting operation of the rotation storage mechanism is not always performed accurately, and the set position may shift, causing a shift in the shutter limit position, or causing the shutter to roll in, reverse wind, etc.
There was a problem that it could cause an accident.

[Purpose of the invention] By one-touch operation of one set lever, it is possible to reset the rotation memory mechanism with the micro switch fixed and to fix the reset state, and it is possible to set the limit position of the controlled object. It is an object of the present invention to provide a simple limit switch with a high positioning accuracy that allows reliable and easy positioning.

[Means for solving problems]

In order to solve the above problems, the limit switch of the present invention includes a rotation storage mechanism 12a in which the rotation of the input shaft is intermittently transmitted to a plurality of disks coaxially provided via an interlocking mechanism; A cam ring 22a provided in conjunction with the memory mechanism 12a, and an actuator 27 on the outer periphery of the cam ring 22a.
The arm has a micro switch MSa that opens the switch when the tip of the cam ring 22a comes into contact with the tip and falls into the recess 26a on the outer periphery of the cam ring 22a, and an arm member provided to be rotatable around the support shaft 28a. When the member rotates in one direction, the interlocking mechanism of the disk is released, and at the same time, the cam ring 22a and the rotation memory mechanism 1 are released.
2a to the home position; and a set lever 39a which is provided so as to be freely pushable and rotates the arm member of the reset mechanism in the one direction when the push is made. When the arm member rotates in the one direction, a part of the arm member engages the actuator 27 of the micro switch MSa.
It is characterized by pressing a in the direction in which the switch closes.

[Effect]

Next, the operation when the above-mentioned limit switch is used to set the opening/closing stop position of the electric hoisting shutter will be explained.

First, the set lever 39a is pushed and operated.
Then, the set lever 39a rotates the arm members of the reset mechanism (in the illustrated embodiment, the base member 30a and the set arm 31a) in one direction, setting the cam ring 22a and the rotation storage mechanism 12a at the original position, and Release the interlocking mechanism. At the same time, a part of the arm member of the reset mechanism presses the actuator 27a of the microswitch MSa to operate the microswitch MSa and close the control circuit of the shutter hoisting motor.

In this state, press the lift button on the shutter separately to drive the hoisting motor in forward and reverse rotation.
Place the slat curtain in the highest position (open position) or lowest position (closed position). As a result, the opening/closing position of the slat curtain can be adjusted by the rotation storage mechanism 12.
a will be stored as the origin position.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 shows a limit switch device 1 that is integrally constructed by combining two limit switches of the present invention, and among the component parts of each limit switch A and B, an input shaft 2 and a frame body 3, which will be described later, are common. There is.

In the figure, 3 is a frame common to limit switches A and B. An input shaft 2 common to limit switches A and B is rotatably installed in the center of the U-shaped frame 3. Both ends of the input shaft 2 protrude outward from the frame 3, and are configured such that rotational output from an external device can be input from either end. Further, a convex portion and a concave portion are respectively formed at both ends, so that the input shafts 2 of a plurality of limit switch devices 1 can be connected in series. Then, the input shaft 2 inside the frame body 3
A drive gear 4a is fixedly installed on the left side.

Further, in one side part (the upper part in FIG. 1a) of the frame 3, a rotating disc shaft 5a is attached to the frame 3 in parallel with the input shaft 2, slightly below the input shaft 2. It is permanently installed. A driven gear 6 is provided at the left end of the rotating disk shaft 5a.
a is rotatably attached, and the driven gear 6
a is designed not to slide along the rotating disk axis 5a. The driven gear 6a is configured to be rotated by the driving gear 4a via an intermediate gear 7a rotatably attached to the frame 3.

A large-diameter interlocking gear 8a is fixed to one end surface of the driven gear 6a, and is configured to rotate around the rotating disc shaft 5a together with the rotation of the driven gear 6a. Also, next to the interlocking gear 8a,
The first disc 9a, the second disc 10a, and the third disc 11a are mounted so as not to move in the axial direction so as to be rotatable about the rotating disc shaft 5a. And pinions 34a and 35, which will be described later.
These interlocking gears 8a, first disc 9a, second disc 10a, and third disc 11a are interlocked as a rotation storage mechanism 12a in limit switch A through interlocking mechanisms 44a such as a, 36a, and 37a. It is configured.

Teeth 13a are formed around the entire circumference of the first disc 9a on the side of the interlocking gear 8a, and are configured to mesh with a pinion 34a rotated by the interlocking gear 8a. Further, a heart-shaped set cam 14 is provided on the end surface of the first disc 9a on the interlocking gear 8a side.
a is coaxially fixed, and one double tooth 15a is provided at the peripheral edge on the second disc 10a side.

At the peripheral edge of the second disc 10a on the first disc 9a side,
Teeth 16a are formed and configured to mesh with a pinion 35a which is intermittently rotated by the two teeth 15a. In addition, the second disc 10
A heart-shaped set cam 17a is provided on the end surface of the first disc 9a side of the set cam 14 of the first disc 9a.
It is coaxially fixed in the same direction as a.
Furthermore, one double tooth 18a is provided on the peripheral edge of the second disc 10a on the third disc 11a side.

Teeth 19a are formed on the peripheral edge of the third disc 11a on the second disc 10a side, and the two teeth 18
It is configured to mesh with a pinion 36a that is intermittently rotated by a. Also, the third disk 1
A heart-shaped set cam 20a is disposed on the end face of the second disc 10a of the set cam 1a, and the set cam 20a is connected to the set cams 14a, 17.
It is coaxially fixed and oriented in the same direction as a.
On the end surface of the third disc 11a on the opposite side from the set cam 20a, one double tooth 21a is provided on the peripheral edge.

A cam ring 22a is provided next to the third disc 11a. The cam ring 22a is a perfect circular cam whose center is inserted through the rotating disk shaft 5a.
The third disc 11 is rotated by the spring 23a inserted in the third disc 11.
It is pressed in the a direction and its axial position is determined. Teeth 24a are formed on the periphery of the cam ring 22a on the third disk 11a side, and the two teeth 21a
A pinion 37a that is intermittently rotationally driven by
It is configured to mesh with the Also, the cam wheel 22
A heart-shaped set cam 25a is provided on the end surface of the third disc 11a of the third disc 11a.
A, 20a are fixedly facing in the same direction.

There is one recess 26a on the outer peripheral surface of the cam ring 22a.
is formed. Further, a micro switch MSa is provided on the side of the cam ring 22a. And actuator 2 of micro switch MSa
7a is locked to the outer peripheral surface of the cam ring 22a,
The contact point of the microswitch MSa is configured to be opened only when the actuator 27a falls into the recess 26a. When the rotation storage mechanism 12a is set to the original position by the set cams 14a, 17a, 20a, 25a and the set arms 31a described later, the actuator 27a of the micro switch MSa falls into the recess 26a of the cam ring 22a. It is configured so that the micro switch MSa is turned off.

Next, next to the rotary disk shaft 5a is a support shaft 28.
a is fixed to the frame 3 parallel to the rotating disk shaft 5a. A base member 30a, which is a component of a reset mechanism 29a, is swingably supported on the support shaft 28a. Four set arms 31a having convex portions at their tips are fixed to the base member 30a, and together with the set cams 14a, 17a, 20a, and 25a disposed facing each other,
It constitutes a reset mechanism 29a of the rotation storage mechanism 12a.

A support shaft 28 is provided at both ends of the base member 30a in the axial direction toward the side opposite to the micro switch MSa.
A pair of mounting arms 32a, 3 in a direction perpendicular to a.
2a is provided protrudingly. The mounting arm 32a, 3
A pinion shaft 33a is provided between the support shaft 28a and the support shaft 28a.
The end on the cam ring 22a side protrudes outward from the mounting arm 32a. And the mounting arm 32
A pinion shaft 33a between a and 32a has a pinion 34 as an interlocking mechanism for the rotation storage mechanism 12a.
a, 35a, 36a, and 37a are rotatably provided, and boss portions of required dimensions are brought into contact with each other so as not to move in the axial direction. As shown in FIG. 1b, the frame 3 is provided with a leaf spring 38a, and the free end of the leaf spring 38a is connected to the pinion shaft 33.
a is pressed toward the rotating disk shaft 5a. Therefore, normally, as shown in FIGS. 1 and 3a and 3c, the pinion 34a is meshed with the interlocking gear 8a and the teeth 13a of the first disc 9a, and the pinion 34a
5a is the first disk 9a when set at the origin position
and the teeth 16a of the second disc 10a. Further, the pinion 36a similarly has two teeth 18a of the second disc 10a and the third disc 11.
The pinion 37 is meshed with the tooth 19a of the pinion a.
Similarly, the tooth a is meshed with two teeth 21a of the third disc 11a and a tooth 24a provided on the cam ring 22a.

Next, a set lever 39a is provided to the frame 3 near the base member 30a.

As shown in FIGS. 1c and 2, the rear end of the set lever 39a is formed to be slightly wider than the bar-shaped tip. A cutout groove 40a is formed in the rear end portion parallel to the longitudinal direction of the set lever 39a. This notch groove 40a has the support shaft 2
8a is inserted therethrough, and the set lever 39a can move along this support shaft 28a in a direction perpendicular to the support shaft 28a. Further, a guide groove 4 is formed in the rear end portion in a diagonal direction with respect to the notch groove 40a.
1a is formed. An end portion of the pinion shaft 33a is slidably engaged with the guide groove 41a. A recess is formed in the rear end surface of the set lever 39a, and a spring 42a is interposed between the rear recess and the mounting plate 3a of the frame body 3. Therefore, the set lever 39a is pushed away from the limit switch A by the spring 42a, and the support shaft 28a is locked at one end of the notched groove 40a. (See Fig. 1c) If the set lever 39a is pressed against the spring force from this state, the set lever 39a will move into the notched groove 4.
It is guided by a support shaft 28a that is engaged with 0a, and is adapted to slide along the frame 3. Further, at this time, the pinion shaft 33a is moved along the guide groove 41a and swung in a direction away from the rotating disk shaft 5a, so that the base member 30a
Each set arm 31a swings around the support shaft 28a, and when the interlocking mechanism 44a is released, the corner of the base member 30a is connected to the micro switch MSa.
The actuator 27a is pressed and fixed. Then, when the set lever 39a is pressed until the support shaft 28a reaches the other end of the notched groove 40a, each swinging set arm 31a moves to each set cam 14a, 17a, 20.
a, 25a.

Further, the tip of the set lever 39a is configured to protrude from a slot in a cover (not shown) that covers the frame 3. A stepped portion 43a is formed at the operating end of the tip.

Therefore, if the stepped portion 43a of the set lever 39a is engaged with the edge of the slot in the cover while the set lever 39a is pressed, the interlocking mechanism 44a will be in the released state as described above, and the micro switch will be activated.
MSa is fixed in the ON state, and the reset mechanism 29a
is activated and fixed, and the rotation storage mechanism 12a and the cam ring 22a are set at the original position.

Next, as shown in FIG. 1a, a limit switch B has an input shaft 2 and a frame 3 as common components with the limit switch A, and is provided at a position opposite to the limit switch A with the input shaft 2 in between. There is. The limit switch B is the rotation storage mechanism 12b.
The rotating direction of the limit switch A is opposite to that of the limit switch A. Further, the set lever 39b of the limit switch B is the set lever 39b of the limit switch B.
It is set a little shorter because it is necessary to align the pressing direction and installation position with 9a. The rest of the configuration is substantially the same as that of limit switch A, so the main parts are designated by the same reference numerals with the suffix "b" changed and the explanation thereof will be omitted.

Next, a configuration in which the limit switch device 1 described above is used as an automatic stop switch for a wind-up shutter will be described.

Winding type shutter S (hereinafter referred to as shutter S)
is connected to a motor connected to a drive control device. The drive control device is configured with an open drive circuit and a closed drive circuit connected in parallel to each other,
The shutter S can be driven up and down by operating an open button, a close button, and a stop button provided in both circuits, respectively.

The configuration is such that the rotation of the drive shaft of the shutter S is input to the end of the input shaft 2 common to the limit switches A and B. Here, as shown in FIG. 3, when the shutter S moves in the opening direction, the cam ring 22a of the limit switch A rotates in the opposite direction (arrow C in the figure), and the cam ring 22b of the limit switch B rotates in the opposite direction (arrow C in the figure). The direction of rotation is the forward direction (arrow D in the figure).

The microswitch MSa of the limit switch A is connected in series to the open drive circuit of the drive control device of the shutter S, and the microswitch MSb of the limit switch B is connected in series to the same close drive circuit.

Next, the operation of the configuration described above will be explained in accordance with the procedure for setting the upper limit position and lower limit position of the shutter S to both limit switches A and B.

First, set lever 39 of limit switch A.
Press a downward. At this time, Figures 2 and 3
As shown in FIG. b, the pinion shaft 33a swings downward around the support shaft 28a while sliding along the guide groove 41a of the set lever 39a.
Pinions 34a, 35 as interlocking mechanism 44a
a, 36a, and 37a are separated from the motion gear 8a, the first disc 9a, the second disc 10a, and the third disc 11a, and are set at positions apart from these.
Therefore, in this state, even if the input shaft 2 rotates,
Only by rotating the driven gear 6a, each of these discs 9
No rotational force is transmitted to a, 10a, 11a and the cam ring 22a.

Furthermore, when the pinion shaft 33a swings, the mounting arm 32a, the base member 30a, and each set arm 3, which are integrally formed with the pinion shaft 33a,
1a also swings in the same direction. Each set arm 31a is connected to each set cam 14a, 17a, 20a,
25a and engages each disc 9a, 10a, 1
1a etc. to the origin position, the base member 30a etc.
The corner presses the actuator 27a of the limit switch MSa and fixes it in the ON state.

Then, following the release of the interlocking mechanism 44a and the fixing of the microswitch MSa, the reset mechanism 29a is activated, and the rotation storage mechanism 12a and the cam ring 22a are reset. That is, as shown in FIG. 3b, each set arm 31a is swung rightward, and the convex portion of each set arm 31a is aligned with each set cam 14.
contacting the side peripheral surfaces of a, 17a, 20a, 25a,
These set cams 14a, 17a, 20a, 25
Rotate a. At this time, since the interlocking mechanism 44a is released, the discs 9a, 10a, 11a and the cam ring 22a are in a state where they can freely rotate without interlocking with each other. Furthermore, prior to the operation of the reset mechanism 29a, the micro switch MSa is activated.
Since the actuator 27a is fixed in the ON state, the actuator 27a is separated from the circumferential surface of the cam ring 22a and does not apply any load to the rotation of the cam ring 22a.
Therefore, each disc 9a, 1 by the set arm 31a
The reset operation of the cam wheels 0a, 11a and the cam wheels 22a is performed reliably, and they can be accurately set to the original position. Therefore, when the set lever 39a is pushed to the set position, the protrusion of each set arm 31a is engaged with the recess of each set cam 14a, 17a, 20a, 25a, as shown in FIG. 3b. Each disk 9a, 10a, 11a
And the cam ring 22a is accurately set at the origin position. At this time, the recess 26a of the cam ring 22a is at the upper left side in the figure, and the micro switch MSa is fixed in the ON state by the corner of the base member 30a.
The actuator 27a is disposed at a position facing the lower corner of the recess 26a.

Here, the stepped portion 43a of the set lever 39a is engaged with the slot in the case. As a result, the microswitch MSa is fixed in the ON state, and the rotation storage mechanism 12a is set and fixed at the correct origin position with the interlocking mechanism 44a released.

Next, the set lever 39b of the limit switch B is also pressed and fixed in accordance with the above procedure.

Through the above operations, the shutter S can be freely driven up and down by operating the open and close buttons of the drive control device.

In the above state, the shutter S is moved to the upper limit position by operating the open button, and the fixation of the set lever 39a of the limit switch A is released at the upper limit position. Then, as partially shown in Figure 3C,
The pinions 34a, 35a, 36a, 37a are again operatively connected to the interlocking gear 8a, each disc 9a, 10a, 11a, and the cam wheel 22a, so that the cam wheel 22a
a comes to move in conjunction with the rotation of the drive shaft of the shutter S. Further, the microswitch MSa connected to the opening drive circuit of the shutter S is turned off because the actuator 27a falls into the recess 26a of the cam wheel 22a.

Next, by operating the close button, the shutter S is lowered and moved to the lower limit position. At this point, similarly to limit switch A, the set lever 39b of limit switch B is released.

Note that the limit positions may be set in the reverse order of the above-mentioned order.

Next, the operation of the limit switch whose upper limit position and lower limit position are set as described above will be explained.

First, press the open button to move the shutter S upward from the lower limit position. The input shaft 2 starts rotating in synchronization with the rotation of the drive shaft, and the rotation storage mechanism 12b of the limit switch B starts normal rotation from the original position. That is, when the first disc 9b rotates once, the two teeth 15b return to rotate the pinion 34b by one tooth. The second disk 10 that meshes with the pinion 34b also rotates by one tooth. Eventually, when the second disc 10b rotates once, the pinion 35b rotates by one tooth by the two teeth 18b, and the pinion 35b rotates by one tooth.
The third disc 11b that meshes with the third disc 11b rotates by one tooth.
In this way, the rotation of the input shaft 2 is sequentially transmitted from the first disk 9b to the third disk 11b, and the cam wheel 22b, which is intermittently interlocked with the third disk 11b, is also sequentially rotated in the positive direction D. . During this time, the actuator 27b of the micro switch MSb is moved to the recess 2 of the cam ring 22b.
Since it is pressed and fixed to the peripheral surface other than 6b, the microswitch MSb connected to the closing drive circuit of the shutter S remains fixed in the ON state.

On the other hand, during the opening operation of the shutter S, the actuator 27a of the micro switch MSa of the limit switch A is also pressed against the circumferential surface of the cam ring 22a.
The contact is fixed in the ON state. However, the rotation storage mechanism 12a of the limit switch A is rotated in the opposite direction C so as to return to the original position at the upper limit position. That is, as shown in FIG. 3a, the cam ring 22a of the limit switch A is rotating in a direction in which the recess 26a approaches the tip of the actuator 27a. When the shutter S reaches the upper limit position, the actuator 27a moves to the cam ring 22a.
falls into the recess 26a of the micro switch.
Turn MSa to OFF state. Therefore, the opening drive circuit for the shutter S is cut off, and the shutter S is accurately and reliably stopped at the preset upper limit position.

Next, press the close button to move the shutter S downward from the upper limit position. In this case, contrary to the opening operation, the rotation storage mechanism 12a of the limit switch A
rotates from the home position in the positive direction D, and during this time the cam wheel 22a turns on the micro switch MSa.
maintained in the state. On the other hand, limit switch B
The rotation storage mechanism 12b is rotated in the opposite direction C so as to return to the original position when the shutter S reaches the lower limit position.

Then, when the shutter S reaches the lower limit position, almost the same as in the case of the opening operation described above, the actuator 2
7b falls into the recess 26b of the cam wheel 22b, turning off the micro switch MSb and cutting off the closing drive circuit of the shutter S. Therefore, the shutter S is accurately and reliably stopped at the preset lower limit position.

In the embodiment described above, two limit switches A and B are connected to each rotary memory mechanism 1.
An example has been shown in which the shutters 2a and 12b are integrally configured with a common input shaft 2 so as to rotate in opposite directions, and the shutter S, which is the controlled object, can be stopped at both the upper and lower limit positions.

Furthermore, the limit switch of the present invention can be used alone or as a two-way switch as shown in the embodiment.
In addition to the configuration of one set of limit switches, a configuration in which three or more limit switches are linked can also be adopted. In this case, each limit switch may be a single unit having an independent input shaft. In this case, by changing the connection direction, the rotation direction of the rotation storage mechanism of each limit switch can be arbitrarily set. For example, if you set two limit switches to both the upper and lower limit positions of the shutter, and set the third limit switch so that the rotation memory mechanism comes to the home position at any position where you want to obtain a signal, you can set that position as the boundary. Since the contacts of the microswitch are exchanged at the same time, a voltage-free contact position signal can be obtained. Similarly, a configuration of four or more connections in various forward and reverse connection directions is also possible.

Note that the rotation storage mechanism 12a, 1 in the embodiment
In 2b, three discs are used, but the rotational memory mechanism may be configured with two discs, or a fourth or fifth disc may be provided, and the above-mentioned method may be used. It is also possible to construct the input shaft so that the rotation of the input shaft is intermittently transmitted sequentially to the adjacent discs via the same pinion, two teeth, etc. In this case, it can be applied to objects with a large movement range, such as shutters, to be controlled.Also, even if the movement range of a shutter is small, if the movement range of the disk is expanded and made more sensitive, the resolution can be improved. This increases the accuracy of the limit setting position for shutters, etc.

[Effect of the invention] According to the limit switch according to the invention, the arm member of the reset mechanism is rotated in one direction by pushing the set lever 39a, and the cam ring 22 is rotated in one direction.
a and the rotation storage mechanism 12a to the home position and release their interlocking mechanisms, and at the same time, a part of the arm member of the reset mechanism presses the actuator of the micro switch MSa to keep the switch in the ON state. Since it is configured as follows, it has the following effects.

(1) The micro switch can be fixed with a one-touch operation by simply pushing in the set lever, and the cam wheel and rotation memory mechanism, which are released from the load of the micro switch, can be accurately reset to the home position, making it easy to set the limit position. It is simple and reliable, does not require fine adjustment after setting, and is also easy to correct or change the setting position. In other words, while the rotation memory mechanism remains fixed at the home position, the microswitch that opens and closes the motor circuit for raising and lowering the shutter can be operated at the same time.
Since it is held in the ON state, the shutter slat curtain etc. can be raised and lowered to the fully open or fully closed position.

(2) Since it is composed of a simple mechanical structure, the set limit position is maintained for a long time and the position control accuracy is high.

(3) Even if you operate the shutter manually during a power outage, the set limit position is memorized.

(4) A configuration in which a plurality of limit switches are connected in an interlocking manner so that each rotation memory mechanism and each cam wheel interlocked therewith rotate in an arbitrary combination in the same direction or in opposite directions when viewed relatively. Therefore, in addition to the upper and lower limit positions of the shutter or the like to be controlled, arbitrary limit positions can be set, and position signals that can be used for various purposes can be obtained.

[Brief explanation of the drawing]

1a and 1b are a front view and a front view of an embodiment of the present invention, respectively, FIG. 1c is a sectional view taken along line CC in FIG. 1a, and FIG. Diffusion exploded diagram of main parts of A, Figure 3a
-c are operation explanatory diagrams of the same embodiment. A, B...Limit switch, MSa, MSb...Micro switch, 1...Limit switch device, 2
...Input shaft, 9a, 9b...First disc, 10a, 10
b...Second disc, 11a, 11b...Third disc, 12
a, 12b... Rotation storage mechanism, 22a, 22b... Cam wheel, 29a, 29b... Reset mechanism, 14a,
14b, 17a, 17b, 20a, 20b, 25
a, 25b... Set cam as a component of the reset mechanism, 30a, 30b... Base member as a component of the reset mechanism, 31a, 31b... Set arm as a component of the reset mechanism, 39a, 3
9b...Set lever, 44a, 44b...Interlocking mechanism, 34a, 34b, 35a, 35b, 36a,
36b, 37a, 37b, 38a, 38b...Pinions as components of the interlocking mechanism.

Claims (1)

[Claims for Utility Model Registration] A rotation storage mechanism 12a in which the rotation of an input shaft is intermittently transmitted to a plurality of coaxially provided discs via an interlocking mechanism; and an actuator 27 on the outer periphery of the cam ring 22a.
The arm has a micro switch MSa that opens the switch when the tip of the cam ring 22a comes into contact with the tip and falls into the recess 26a on the outer periphery of the cam ring 22a, and an arm member provided to be rotatable around the support shaft 28a. When the member rotates in one direction, the interlocking mechanism of the disk is released, and at the same time, the cam ring 22a and the rotation memory mechanism 1 are released.
2a to the home position; and a set lever 39a which is provided so as to be freely pushable and which rotates the arm member of the reset mechanism in the one direction when the reset lever 39a is pushed. When the arm member rotates in the one direction, a part of the arm member engages the actuator 27 of the micro switch MSa.
A limit switch characterized in that a is pressed in a direction in which the switch closes.