JPH0244096B2 - - Google Patents

Description

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

[Background technology]

Conventionally, there is a time switch in which a setter is provided on a disc-shaped dial that rotates at a constant period, and the setter turns on and off a micro switch via a switch lever. In this type of time switch, we proposed a time switch in which the microswitch could be turned on manually without rotating the dial (Japanese Patent Application No. 197997-1979 (Japanese Patent Application No. 52415-1983)). . However, it cannot be turned off manually, and there is a desire for something that can be turned on and off manually for the convenience of equipment inspection. There is a device shown in Japanese Utility Model Publication No. 56-30109 that can be turned on and off manually.
This is a configuration in which the on-lever can be manually operated by the holding lever using the biasing force of the spring. However, since a spring is used, there are problems in that it is difficult to assemble and the ON operation is uncertain.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a time switch which can be turned on and off manually using a dial setter, and which is easy to assemble and ensures reliable on operation.

[Disclosure of the invention]

The time switch of the present invention includes a dial that has a setting element and rotates, an on lever with a return spring that is moved by being pressed by the setting element as the dial rotates, and an on lever that is operated outside the operating range of the on lever. a manual lever that is movable between an on position, an auto position, and an off position and has a pressing part that presses the on lever in the operating direction in the on position; The switch is movable and connected to the manual lever so that it enters the operating range of the on-lever between the on-lever and the operating section of the switch when the manual lever is in the on-position and the auto-position, and when it is in the off-position. and a mover that moves out, and the mover is pressed when the on-lever operates in a state in which it enters the operating range of the on-lever to operate the operating portion of the switch. It is.

According to the configuration of this invention, when the dial is rotated and the manual lever is set to the auto position, the setter approaches the on-lever and pushes it due to the rotation of the dial, and the mover that has entered within the operating range of the on-lever is moved to the on-lever. When pressed, the slider operates the operating section of the switch. When the setting element separates from the on-lever by rotating the dial, the on-lever is returned to its original position by the return spring, and the operating section of the switch is also returned to its original position. When the manual lever is placed in the on position, the press section pushes the on lever and operates the switch operating section via the slider. Furthermore, when the manual lever is set to the OFF position, the pressing part moves away from the ON lever and the slider moves out from between the ON lever and the operating part, so even if the ON lever is pressed with the setter, the switch will be located outside the operating range of the ON lever. Therefore, the operating section is not activated and the switch does not operate.

As a result, the switch can be turned on and off using the setting element on the dial, and can also be turned on and off manually.

Embodiment An embodiment of the present invention is shown in FIGS. 1 to 12. In Figures 1 to 5, 1 is a rectangular main body plate, and a disc-shaped dial 2 is located at the center of its surface.
is arranged and covered with a transparent front cover 3. An arcuate protrusion 4 having a slightly smaller diameter than the dial 2 is provided on the upper surface of the main body plate 1 and protrudes concentrically with the dial 2, and an arcuate motor is inserted into the arcuate groove 4' formed inside the arcuate protrusion 4. A coil 5 is housed therein.
An outer circumferential wall 1a having a cylindrical inner circumferential surface with a diameter that allows the dial 2 to fit loosely is provided on the outer circumference of the upper surface of the main body plate 1,
Attachment holes 70 are also provided at the four corners. A back case 6 having a circular planar shape is attached to the back side of the main body plate 1, and therein is a rotor 7 driven by a motor coil 5, and a transmission mechanism 8 for transmitting rotation from the rotor 7 to the dial 2. , a circuit block 9 for driving the motor coil 5, and a switch contact mechanism section 10 are arranged and housed in a planar manner.

Dial 2 has multiple setter mounting holes 1 on the outer periphery.
1 radially, and a swingable setter 12 is attached to the setter attachment hole 11 over the entire circumference. A dial plate 14 having a smaller diameter than the dial 2 is arranged on the surface of the dial 2, and is fixed to a cylindrical shaft 16 that projects 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 made of permanent magnets. The rotor 7 has a pinion portion, and is connected to the minute wheel 23 via a plurality of gears 20 to 22.
Rotation is transmitted to. From the minute wheel 23 to the minute wheel 24
The rotation is transmitted to the gear portion 25 of the dial 2 via the rotor, and the dial 2 is driven. The minute wheel 23 has a pinion portion 23a integral with the minute hand shaft 26, as shown in FIG.
and a large gear 23b. 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, but the minute wheel 23 can also rotate in the opposite direction.
A minute hand 17 is attached to the minute hand shaft 26.
The rotation is transmitted to the hour hand 18 at a reduced speed by harmonic drive. That is, a driving force is applied to the hour hand 18 by the eccentric cam 28 provided on the minute hand 17, and the rotational speed is regulated by the engagement between the fixed gear 29 of the dial 14 and the internal gear 30 provided on the hour hand 18.

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 drive 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 dial 2 is manufactured separately from the gear part 25 as shown in FIG. It is stuck in the hole 52. Therefore, the dial 2 has play with respect to the gear portion 25 within the range of the arcuate hole 52. The center of the arc of the arc-shaped hole 52 is the same as the center of rotation of the dial 2.

The switch contact mechanism section 10 will be explained. Fifth
As shown in the figure, the on-lever 39 is attached to the main body plate 1 with the support shaft 3.
It is rotatably attached at 9'. The on-lever 39 is pressed outward by a torsion coil spring 55' attached to the support shaft 39'.
The on-lever 39 pushes the push pin 59, which is the operation part of the micro switch 10', which is the switch, via the moving pin 55, which is the mover. The push pin 59 pushes the movable contact piece 42 biased by the contact spring 41 with its tip, separates the movable contact 44 at the tip from the fixed contact 43, and brings the movable contact 45 into contact with the fixed contact 46. The movable contact piece 42 is connected to a terminal 49. In addition, the fixed contact 43,
46 is provided at the terminals 47, 47'. The on lever 39 is provided with a switch engaging protrusion 60 for contacting the setter 12, and both sides of the protrusion in the dial rotation direction are formed into slopes 60a and 60b. Further, a manual lever 48 for manual operation is connected to a guide hole 58 and a guide pin 57.
installed so that it can be moved along the A moving pin 5 is connected to the manual lever 48 via a connecting rod 61.
5, and the movable pin 55 is movable along the guide wall 62. Both ends of the connecting rod 61 are hinged.

Operation Rotation of the rotor 7 drives the minute wheel 23 via each of the gears 20 to 22, and rotationally drives the dial 2 via the minute wheel 24. When the setter attached to the dial 2 is turned on and the set time comes, the setter 12 turns on the slope 60b of the ON lever 39.
[FIG. 12A] while pushing it, rotate the on-lever 39, and connect the contact 4 via the moving pin 55.
3 and 44 are turned off, and contacts 45 and 46 are turned on. 9 to 11 show the relationship between the on-lever 39 and the protrusion 51 of the gear 25 fitted with the dial 2. When the setter 12 is in contact with the slope 60b and the parallel portion 60c of the on-lever 39, a force opposite to the rotating direction is applied to the dial 2 by the on-lever 39, so that the protrusion 51 of the gear portion 25 It comes to the rotation direction side of the circular arc hole 52. Next, the setting element 12 is on the slope 60a of the on lever.
When the dial 2 comes to the side of , the on-lever 39 applies a rotational force to the dial 2, so the dial 2 momentarily moves in the forward direction until the protrusion 51 comes to the opposite side of the rotation direction of the arcuate hole 52 of the dial 2. Rotate.
Therefore, the contacts 45 and 46 (FIG. 5) open quickly. That is, when the dial 2 and the gear 25 are fixed, the setter engaging protrusion 60 of the on lever 39
The face of the setting element passing through is sloped 60a like this.
In this case, the setter 12 rotates the contacts 45 and 4 while passing through the slope 60b at the normal rotational speed of the dial 2.
6 will be cut off, resulting in a delay. However, since the dial 2 and the gear part 25 are separated and the rotation is transmitted through the play between the arcuate hole 52 and the protrusion 51, the dial 2 is allowed to freely rotate in the forward direction, and the slope 60a is vertically rotated. Rapid disconnection of the contacts 45 and 46 can be obtained in the same way as in the case of using a flat surface.

Next, the case of manual operation will be explained. To turn it off, move the manual lever 48 to the OFF side as shown in FIG. Therefore, the contacts 43 and 44 are in an on state, and the contacts 45 and 46 are in an off state. Conversely, when the manual lever is moved to the ON side, the moving pin 55
remains sandwiched between the on lever 39 and the push pin 59, and the pressing portion 48' of the manual lever 48 pushes the tip 39'' of the on lever 39. Therefore,
The contacts 43 and 44 are in the off state, and the contacts 45 and 46 are in the on state. Note that C in Figure 12 is ON with AUTO.
The same applies when it is in the AUTO and OFF state.

The time on the time switch is set by rotating the minute hand 17 by hand.
Since a and 60b are on both sides, both forward and reverse rotation are possible. Therefore, it is easy to set the time and is convenient to use. Note that the structure of the clutch 27 is such that forward rotation (clockwise) is light and reverse rotation is heavy.

Although it operates in this way, it uses a motor consisting of an arc-shaped motor coil 5, and a transmission mechanism 8 consisting of a motor coil 5, a gear train, and a micro switch 1.
0' are arranged in a plane on the back side of the dial 2, so they can be arranged closely without creating any extra space. Therefore, it can be made smaller and more compact. Furthermore, since they are arranged in a plane, they can be made thinner. Furthermore, the arc-shaped protrusion 4 is provided protruding from the front side of the main body plate 1, and the motor coil 5 is accommodated in the arc-shaped groove 4' formed on both sides of the protrusion 4.
The motor coil 5 fits well and is stable. Note that the arc length of the motor coil 5 can be arbitrarily selected depending on the required ampere turns and space.

〔Effect of the invention〕

The time switch of the present invention allows a mover to enter between the operating section of the switch and the on-lever when the manual lever is in the auto position and the on-position, so that the operating section of the switch can be operated via the mover by the operation of the on-lever. In the auto position, the on lever is operated by the setter, and in the on position, the pressing part of the manual lever operates the on lever, and in the off position of the manual lever, the slider is moved out, so that the switch is not operated by the operation of the on lever. The switch can be turned on and off using the dial's setter, and can also be turned on and off by operating the manual lever. Furthermore, compared to the conventional example, the number of parts is smaller, and assembly workability is improved. Since no particular spring member is required,
It is easy to assemble and has the effect of ensuring reliable turn-on operation.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is an exploded perspective view thereof.
Figure 4 is an exploded perspective view of the same upside down, Figure 5 is a plan view of its interior, Figure 6 is a sectional view of its rotation transmission mechanism, and Figure 7 is an exploded view of its minute wheel. FIG. 8 is an exploded perspective view of the rotation transmission part of the dial, and FIGS. 9 to 11 are operational explanatory diagrams showing the relationship between the switch lever, dial, and setting element.
FIG. 2A is an explanatory diagram of the operation of the switch contact mechanism in the auto-on state, FIG. 12B is an explanatory diagram of the operation in the off-state, and FIG. 12C is an explanatory diagram of the operation in the on-state. 2... Dial, 10'... Micro switch, 12... Setting element, 39... On lever, 48... Manual lever, 48'...
Pressing portion, 55... Moving pin, which is a moving element, 59...
...Push pin that is the operation part.

Claims (1)

[Claims] 1. A dial that has a setting element and rotates, an on-lever with a return spring that is moved by being pressed by the setting element as the dial rotates, and a switch that has an operating part located outside the operating range of the on-lever. a manual lever that is movable between an on position, an auto position, and an off position and has a pressing portion that presses the on lever in the operating direction in the on position; a mover connected to the manual lever, which enters into the operating range of the on-lever between the on-lever and the operating section of the switch at the on-position and auto-position of the manual lever, and exits at the off-position; A time switch, characterized in that the mover is pressed by operating the on-lever in a state in which it enters the operating range of the on-lever to operate the operating portion of the switch.