JPH0158608B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a repeatable time switch.

[Background technology]

Conventionally, there are typical repeatable time switches shown in FIGS. 28 and 29. In other words, the dial body 71 rotates at a constant speed at a constant period.
The switch 73 is operated by a plurality of setters 72 attached to the outer periphery of the switch 73 to turn on/off the electrical equipment at a predetermined time. This is done by inserting and fixing the setter 72 into a plurality of setter holes 74 arranged in a row on the peripheral edge of the dial body 71.
The end of the switch 73 is configured to switch the switch 73. The setter holes 74 are provided, for example, at intervals of 15 minutes. The switch 73 is opened and closed each time each setter 72 operates the switch lever 73a with which it engages.

In this conventional device, the setter 72 is prepared separately from the dial body 71, and the setter 72 must be inserted and fixed into the setter hole 74 corresponding to the time when the switch 73 needs to be changed. The setter 72 had to be removed from the unnecessary setter hole 74. As a result, changing the mounting position of the setter 72 in response to a change in the switch switching time is relatively complicated and easy to make mistakes, and unused setters 72 are easily lost. In addition, an unused setter 72 is added to the time switch main body 75.
It was necessary to provide a storage section.

Furthermore, in conventional devices, there are those that use a single-shaped setter for both on-off operations, and those that use a setter that has a dedicated shape for on-off operations. In the former case, there is a disadvantage that it is difficult to distinguish between on and off operations at each time when switching a complex program.In the latter case, the structure is complex and it is not easy to replace the program. It was hot. Furthermore, since the parts themselves are small and in large quantity (96 pieces per machine at 15 minute intervals), managing the parts is difficult.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a time switch that is easy to operate a setter, is less prone to erroneous operation, and is free from the problem of losing the setter.

[Disclosure of the invention]

In this invention, a plurality of guide grooves are provided on the periphery of a disc-shaped dial, and a U-shaped setter is engaged with the guide groove so that it can be pushed in and pulled out, and set at a push-in position or a pull-out position. It is equipped with a lever for opening and closing the contact that rotates when it comes into contact with the terminal.
In the first invention, the guide groove is provided in the radial direction of the dial, and in the second invention, the guide groove is provided at an angle with respect to the radial direction. A lock portion is provided on the lower side surface of the guide groove of the dial in the direction of dial rotation, and the setter is provided with a locked portion that engages with the lock portion when the setter is pushed in.

Embodiment An embodiment of the second invention is shown in FIGS. 1 to 19. In FIGS. 1 to 4, reference numeral 1 designates a rectangular main body plate, a disc-shaped dial 2 is arranged at the center of its surface, and a transparent front cover 3 covers it. A ring-shaped protrusion 4 having a slightly smaller diameter than the dial 2 is protruded from the upper surface of the main body plate 1 and concentrically with the dial 2. A ring-shaped motor is inserted into a ring-shaped groove 4' formed inside the ring-shaped protrusion 4. A coil 5 is housed therein. An outer circumferential wall 1a having a cylindrical inner circumferential surface with a diameter into which a disc-shaped dial 2 can be loosely fitted is protruded from the outer circumferential portion of the upper surface of the main body plate 1. A back case 6 is attached to the back side of the main body plate 1, and therein is a transmission mechanism 8 that transmits rotation from a rotor 7 driven by a motor coil 5 to the dial 2, and a circuit block for driving the motor coil 5. 9 and a switch contact mechanism section 10 are arranged and housed in a two-dimensional manner. A large number of setting elements 50 are attached to the outer periphery of the dial 2. A dial plate 14 having a smaller diameter than the dial 2 is disposed on the inner peripheral surface of the dial 2, and is fixed to a cylindrical shaft 16 that protrudes from the main body plate 1 and passes through the dial 2. 17 is a minute hand, and 18 is an hour hand.

The motor and transmission mechanism will be explained. The motor coil 5 is wound around the iron core 19.
Both ends are shaped to apply magnetomotive force to the rotor 7, which is a permanent magnet. The rotor 7 has a pinion portion, and its rotation is transmitted to the minute wheel 23 via a plurality of gears 20 to 22. From the minute wheel 23 to the minute wheel 24,
The rotation is transmitted to the gear portion 25 of the dial 2, and the dial 2 is driven. As shown in FIGS. 8 and 9, the minute wheel 23 has a pinion portion 23a integral with the minute hand shaft 26.
and a large gear 23b, and a one-way clutch is formed by an internal gear 23c provided on the large gear 23b and a clutch wheel 27 integrated with the pinion portion 23a. A minute hand 17 is attached to the minute wheel 26, and rotation is transmitted from the minute hand shaft 26 to the hour hand 18 at a reduced speed by harmonic drive. That is, the hour hand 1 is moved by the eccentric cam 28 (FIG. 8) provided on the minute hand 17.
8 is given driving force, and the fixed gear 2 of the dial 14
9 and an internal gear 30 provided on the hour hand 18, the rotational speed is regulated. 32 is a gear support cover.

The motor drive circuit block 9 has various circuit components such as a crystal oscillator 33, a resistor 34, a capacitor 35, a rectifier 36, and a secondary battery 37 mounted on a printed circuit board 31, and is supplied with power from an external terminal 38 to drive the motor. It generates pulses. The crystal oscillator 33 is a cylindrical tube in which a crystal oscillator, an IC, a resistor, a trimmer, etc. are mounted and sealed.

The switch contact mechanism section 10 will be explained. 1st
As shown in FIGS. 0 and 11, an on bar 30 is attached to the main body plate 1 so as to be freely rotatable around a support shaft 39'. The on lever 39 is a normally open contact spring 41
A movable contact piece 42 energized by is attached to the tip, and a movable contact 43 at the tip is brought into contact with a fixed contact 44. Fixed contact 44 is attached to terminal 45. The movable contact piece 42 is connected to a terminal 46. 48 is a manual operation piece, which is attached so as to be movable along the guide hole 49.

The dial 2 and the setting element 50 will be explained.
A large number of guide grooves 51 and 52 are formed at a constant pitch in the circumferential direction on the upper and lower surfaces of the outer periphery of the dial 2. When the set interval is 15 minutes, 96 guide grooves 51 and 52 are provided each. guide groove 51,
52 is inclined with respect to the radial direction so that the inner end side is located at the rear in the rotational direction of the dial 2. The lower guide groove 52 has a locking recess 53 (FIG. 15) on its side surface, and the upper guide groove 51 has a retaining recess 54 (FIG. 16) on its bottom surface. The setter 50 is formed in a U-shape as shown in FIGS. 17 to 19, and has protrusions 55 and 56 on the inner surface of the opposing pieces that can be slidably inserted into the upper and lower guide grooves 51 and 52, respectively. A retaining protrusion 57 that engages with the retaining recess 54 is provided at the tip of the upper protrusion 55 . Lower protrusion 56
The width d ₁ of the proximal end portion is formed to be approximately the same width as the guide groove 52, and the width d ₂ of the distal end portion is narrower than this. A lock protrusion 58 is provided on the side surface of the distal end portion, which is a locked portion that can engage with the lock recess 53 of the guide groove 52. Lock protrusion 58
The dimension _d3 , which is the sum of
It is approximately the same as the width of

Operation FIG. 16A shows the on state of the setter 50, and FIG. 16B shows the off state. That is, setter 5
0 is pushed into the inner side of the guide grooves 51 and 52 to turn it on, and when pulled out it turns it off. In the OFF state, the retaining protrusion 57 of the setter 50 engages with the end surface of the retaining recess 54 of the guide groove 52, and the retainer 50 engages with the end surface of the retaining recess 54 of the guide groove 52.
0 is prevented from falling off the dial 2.
In FIG. 12, T ₁ indicates an on period, and T ₂ indicates an OFF state.

The setter 50 in the on state engages with the slope 39a of the on lever 39 as the dial 2 rotates,
The on lever 39 is rotated to bring the movable contact 42 into contact with the fixed contact 44. When the setter 50 is pressed against the on-lever 39, it is slightly deformed as shown in FIG. 15, and the lock protrusion 58 engages with the lock recess 53. Therefore, the setting element 50 is prevented from moving toward the outer circumferential side of the dial 2, and is prevented from returning to the OFF state unnecessarily. In other words, it is locked on. Although this embodiment does not provide a click means for stopping the setter 50 in two positions, the on state and the off state, the guide groove 51 and the setter 50
A protrusion may be provided on the protrusion 55 to serve as a click means for stopping at the two positions.

To do this manually, move the manual operation piece 48 in the direction of arrow Q in FIG.
Push the slope of 9 and use the on lever 39 to close contact 4.
Turn on 2,44.

Although it operates in this way, since the setting element 50 is permanently installed on the outer periphery of the dial 2, there is no risk of losing it, and it is easy to set and change the on/off setting.
Therefore, erroneous operations are less likely to occur. Further, as shown in FIG. 15, the on/off state can be determined at a glance by whether or not the setter 50 is pushed in. Further, as described above, since the lock projection 58 and the lock recess 53 are engaged with each other upon contact with the lock lever 39, the switch is locked, so even if the setter 50 is made to slide lightly, it is stable. A switch operation can be obtained.

20 to 27 show an embodiment of the first invention. In this example, the guide groove 5 of the dial 2'
1' and 52' are in the radial direction of the dial 2', and a click means is provided for stopping the setter 50' in two positions, an on state and an off state. The click means includes a click protrusion 60 provided on the protrusion 55' above the setter 50', and two click recesses 61 and 62 provided in the guide groove 51'. As shown in FIG. 25A, the click protrusion 60 enters the inner click recess 62 in the on state, and in the off state (FIG. 25 B), the click protrusion 60 enters the outer click recess 61.
to go into. The rest is the same as the embodiment shown in FIGS. 1 to 19.

〔Effect of the invention〕

In the time switch of the present invention, the setter is easy to operate, erroneous operation is less likely to occur, and there is no problem of losing the setter. In addition, a lock part is provided on the lower side of the guide groove in the dial rotation direction, and the setter is provided with a locked part that engages with the lock part when the setter is pushed in, so that the on-lock action is improved. This prevents an inadvertent return to the OFF state. In this case, the locking part and the locked part are engaged by the acting force when the setter engages with the lever and turns on the switch, and the setter can be lightly slid to obtain a locking action. Even if you do this, you can still get stable switch operation.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line 2, FIG. 3 is an exploded perspective view of the same, FIG. 4 is an exploded perspective view of the embodiment shown upside down, and Figure 5 is a simplified plan view of the inside, Figure 6 is a sectional view taken along the line - in Figure 5, Figure 7 is a bottom view with the back case removed, and Figure 8 is a partially enlarged sectional view. , FIG. 9 is an exploded perspective view showing the relationship between the minute hand wheel and the clutch wheel, FIG. 10 is a perspective view showing the on lever, FIG. 11 is a partially enlarged bottom view with the back case removed, and FIG. 13 is a partial perspective view of the dial, FIG. 14 is a partial side view of the dial with the setting element attached, and FIG.
FIG. 5 is an explanatory diagram of the operation of the setting element, FIG. 16A is a partial sectional view of the dial and setting element showing the on state, and FIG. 16B is a partial sectional view of the dial and setting element showing the off state. Figure 17 is a perspective view of the setting element, Figure 18 is a perspective view of the setting element at a different angle, Figure 19 is a partial perspective view of the setting element, and Figure 20 is a perspective view of the setting element. FIG. 21 is a partial perspective view of the dial, FIG. 22 is a partial perspective view of the dial shown at a different angle, and FIG. 23 is a plan view of the dial with the setting element attached. FIG. 24 is a perspective view showing the setting element at a different angle; FIG. 25A is a partial sectional view of the dial and setting element showing the on state; FIG. 25B is a perspective view of the setting element;
26 and 27 are respectively explanatory diagrams of the operation of the setting device. FIG. 28 is a plan view of a conventional time switch. FIG. 29 is a cross-sectional side view thereof. 1...Body board, 2...Dial, 3...Front cover, 5...Motor coil, 6...Back case, 7
... Rotor, 8 ... Transmission mechanism, 9 ... Circuit block, 10 ... Switch contact mechanism section, 14 ... Dial plate, 17 ... Minute hand, 18 ... Hour hand, 19 ... Iron core, 23 ... Minute hand Car, 27...Clutch car, 31
...Printed circuit board, 32...Gear support cover, 3
3...Crystal oscillator, 39...On lever, 41...
...Contact spring, 43...Movable contact, 44...Fixed contact, 48...Manual operation piece, 50, 50'...
...Setter, 51, 51'...Guide groove, 52, 5
2'... Guide groove, 53... Lock protrusion, 54...
... Retention recess, 55, 56 ... Protrusion, 57 ... Removal prevention projection, 58 ... Lock projection, 60 ... Click projection, 61, 62 ... Click recess.

Claims (1)

[Scope of Claims] 1. A disc-shaped dial, a mechanism for rotating the dial at a constant speed, and a plurality of guide grooves provided on the circumferential edge of the dial to extend in the radial direction at a constant pitch in the circumferential direction. a plurality of setting elements formed in a U-shape and fitted to the edge of the dial so as to be movable in the direction of rotation of the dial along each of the guide grooves; a lock portion, a locked portion provided on the setter and engaged with the lock portion when the setter is pushed in; and a locked portion provided corresponding to the dial and engaged with the lock portion when the setter is pushed in or pulled out; A time switch comprising a lever that is rotated by the setter as the lever rotates, and a switch contact that opens and closes by the rotation of the lever. 2. A disc-shaped dial, a mechanism for rotating the dial at a constant speed, and a plurality of disc-shaped dials provided at a constant pitch in the circumferential direction on the periphery of the dial and tilted so that the inner end side is located at the rear in the rotational direction with respect to the radial direction. a guide groove of the book; a plurality of setters each formed in a U-shape and fitted to the edge of the dial so as to be freely pushed and pulled out along each guide groove; a lock portion provided on a side surface; a locked portion provided on the setter and engaged with the lock portion when the setter is pushed in; and a locked portion provided corresponding to the dial when the setter is pushed in. A time switch comprising: a lever that is rotated by the setter as the dial is rotated in a state or a pulled-out state; and a switch contact that is opened and closed by the rotation of the lever.