JPS6136338B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-repetitive timer in which single-action or multi-action can be selected.

With a conventional single-action timer such as a lady timer, when the timer is used, the time required to open and close the load is adjusted each time, so if the set time is the same each time, the time will vary. Furthermore, these timers were single-action type, and there were no non-repetitive timers in the multi-action type.

The present invention was invented in view of the above points, and its purpose is to first turn on the load,
To provide a non-repetitive timer in which the timer can be set simply by operating a set lever once the off time is set to single action or multi-action.

The non-repetitive timer of the present invention includes a dial 1 and a switch cam 10 disposed on a dial shaft 16 to interlock the rotation of the dial 1 and the switch cam 10, and a motor 27 for rotating the dial shaft 16. A plurality of holes 2 for penetrating the setter are provided on a concentric circle of the dial 1, a serrated part 3 is provided at the lower part of the outer periphery of the dial 1, and a locking pawl 4 that can freely engage with the serrated part 3 is provided. It is provided on the set lever 5 and set to rotate the dial 1 by a certain angle, and is set so that the switch cam 10 is rotated by a predetermined angle by operating the set lever 5, the first contact 11 is turned on, and the timer operation is started. motor 2
7 rotates and dial 1 rotates once, the first
It is set so that the contact 11 is turned off and the power supply to the motor 27 is stopped to end one cycle of timer operation, and the dial 1 is provided with a protrusion 9 for turning on the second contact 7 for load control. A setter 6 for turning off and on the second contact 7 turned on by the protrusion 9 is inserted into any hole 2 among the plurality of penetration holes 2 provided on the concentric circle of the dial 1. By employing such a configuration, the above-mentioned object of the present invention is achieved. That is, in the present invention, by selecting the number of setting elements 6 and the mounting position of the setting elements 6, the on/off time of the load 28 can be set to multi-action or single-action. The timer can now be set simply by operating the set lever 5.The present invention will be described in detail below with reference to examples. Reference numeral 1 in the figure is a disc-shaped dial, and a number of holes 2 for penetrating the setter are drilled at regular intervals on the concentric circle of the dial 1, and a saw-tooth shape is formed at the lower part of the outer periphery of the dial 1. Section 3 is provided. A locking pawl 4 of a set lever 5 is engaged with the serrated portion 3, and the locking pawl 4 is connected to the set lever main body 12 by an arm 13, and the set lever 5 is made of a molded product. The locking pawl 4 is designed to be able to bend in the direction of the set lever main body 12. The set lever 5 is moved to the first position by a return spring 14.
It is always pressed in the direction of the arrow A in the figure and is guided by a case (not shown) so that it can only move in the direction of the arrow B in Figure 1.
It is located at the position indicated by the imaginary line in the figure. A protruding shaft 15 protruding from the center of the lower part of the dial 1 is press-fitted into a non-cylindrical portion 17 at the upper part of the dial shaft 16. A protrusion 9 is provided on the lower surface of the dial 1 to protrude downward. The dial shaft 16 is supported by bearings at the top and bottom, and the center portions of the ratchet blade 18 and the switch cam 10 are press-fitted into the dial shaft 16. The ratchet gear 19 has a sawtooth shape on the inside and meshes with the ratchet blade 18. dial axis 1
6 can only be rotated clockwise when viewed from the dial 1. The outer periphery of the ratchet gear 19 meshes with a reduction gear 20. and motor 2
7 is transmitted to the dial shaft 16 via the reduction gear 20, and the rotation of the dial shaft 16 rotates the dial 1 and the switch cam 24. The switch cam 10 is provided with a groove 23 at one location on its outer circumference, into which the convex portion 22 of one contact spring 21 is inserted. One end of the contact spring 21 having the first contact 11 is fixed to a contact stand 30. Reference numeral 8 in the figure is a feed cam, and the feed cam 8 is press-fitted into a load release switch cam 24, and the load release switch cam 24 is supported by bearings at the top and bottom. In the figure, reference numeral 25 denotes a load release contact spring having a second contact 7, the tip of which contacts the side surface of the load release switch cam 24, and the other end fixed to a contact base 26. FIG. 2 shows a circuit diagram of the present invention,
27 is a motor, 28 is a load, and 29 is a power source.
As is clear from FIG. 2, the power supply 29 is connected to the load 28 through the series circuit of the first contact 11 and the second contact 7.
is applied.

Next, the operation of the present invention will be explained. When the set lever 5 is operated in the direction opposite to the direction of arrow A in FIG. 1, the locking pawl 4 engages the serrated portion 3 and the dial 1 rotates clockwise by one ratchet tooth. The set lever 5 is returned to its original position by bending the retaining portion of the locking pawl 4 by the spring force of the return spring 14. Here, when the set lever 5 is operated to rotate the dial 1 by a certain angle (that is, one tooth in the embodiment), the switch cam 1 is rotated through the dial shaft 16.
0 rotates by a predetermined angle, the first contact 11 is turned on, the motor 27 begins to rotate, and the dial 1 begins to rotate clockwise. On the other hand, while the dial 1 rotates by one tooth, the protrusion 9 on the back surface of the dial 1 rotates the feed cam 8 by a certain angle and turns on the second contact 7. When a predetermined period of time has elapsed, one end of the setter 6 inserted into any setter insertion hole 2 of the dial 1 moves to the feed cam 8.
When this occurs, the feed cam 8 is rotated and the second contact 7 is turned off. At this time, the load 28 is turned off, but the motor 27 continues to rotate and rotates the dial 1. In this way, even when the load 28 is turned off, the dial 1 and the switch cam 10 continue to rotate.
The convex portion 22 of the contact spring 21 enters the groove 23 of the switch cam 10, the first contact 11 is turned off, the motor 27 is stopped, and at the same time the rotation of the dial 1 is also stopped. The time chart of the above-mentioned timer of the present invention is shown in FIG. 3. A in Figure 3
indicates the second contact 7, B indicates the first contact 11,
C indicates the load 28, _t1 indicates the operating time of the set lever 5, and _T1 indicates the operating time of the motor 27. As is clear from this time chart, the second contact 7 is turned off, and the first contact 1
By operating the set lever 5 while the timer 1 is off, the timer performs the same operation as described above. Therefore, in the single-action type embodiment described above, multi-action is possible by dividing the setter 6 into necessary and non-use parts.

In the present invention, as described above, a plurality of holes for inserting the setting elements are provided on the concentric circle of the dial, so by first selecting the number of setting elements and the mounting position of the setting elements, The on/off time of the load can be set to multi-action or single-action, and a dial and a switch cam are provided on the dial shaft so that the rotation of the dial and the rotation of the switch cam are linked to rotate the dial shaft. A motor is provided, a plurality of holes are provided on the concentric circle of the dial for the insertion of the setter, a serrated part is provided at the lower part of the outer periphery of the dial, and a locking pawl that can freely engage with the serrated part is provided on the set lever. The switch cam is set to rotate by a predetermined angle by operating the set lever, the first contact is turned on, and the timer operation is started.At the same time, the motor rotates and the dial is rotated. After one rotation, the first
It is set so that the contact turns off and the power supply to the motor is stopped, ending one cycle of timer operation, and a protrusion is provided on the dial to turn on the second contact for load control, and the protrusion turns on the second contact for load control. The setter for turning off and on the second contact is then inserted into any hole among the multiple holes provided on the concentric circles of the dial, so it takes the same amount of time each time just to set the set lever. In addition, conventional single-action timers had a limited contact life, but the single-action type of the present invention has the advantage that the contact life is improved because it is separated into a first contact and a second contact. There is.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the present invention, FIG. 2 is a circuit diagram of the same, and FIG. 3 is an explanatory diagram showing a time chart of the same, in which 1 is a dial, 2 is a hole for inserting a setter, 3 is a serrated portion, 4 is a locking pawl, 5 is a set lever, 6 is a setter, 7 is a second contact, 9 is a protrusion,
10 is a switch cam, 11 is a second contact, 16 is a dial shaft, 27 is a motor, and 28 is a load.

Claims (1)

[Claims] 1. A dial and a switch cam are provided on a dial shaft to interlock the rotation of the dial and the switch cam, a motor is provided for rotating the dial shaft, and a plurality of holes for inserting a setter are provided on a concentric circle of the dial. A serrated part is provided at the bottom of the outer periphery of the dial, and a set lever is provided with a locking pawl that can freely engage with the serrated part to rotate the dial at a certain angle.The switch cam is set by operating the set lever. When the motor rotates by a predetermined angle, the first contact is turned on and the timer operation is started, and when the motor rotates and the dial rotates once, the first contact is turned off and the power supply to the motor is stopped. The dial is set to end one cycle of timer operation, and the dial is provided with a protrusion for turning on the second contact for load control, and the second contact turned on by the protrusion is then turned off and on. A non-repetitive timer characterized in that a setter is inserted into any one of a plurality of penetration holes provided on concentric circles of a dial.