JPS5813872B2 - timer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer that can perform accurate timing even during a power outage of commercial power.

Generally, in a timer equipped with a mainspring mechanism, an error occurs in the rotational speed of the hour hand, minute hand, etc., depending on how well the mainspring is wound.

Furthermore, since an electric timer cannot be used during a power outage, a mechanism that can be switched so that it is driven only by a mainspring is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a timer that is equipped with a speed governor to eliminate errors caused by winding the mainspring, and that can switch to mainspring drive without stopping even in the event of a power outage.

Hereinafter, details of the present invention will be explained along with embodiments shown in the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of a timer according to the present invention. In the figure, reference numeral 1 designates an AC motor, which is screwed to a machine frame (not shown) via a mounting plate 2. .

A pinion 3 fixed to the rotating shaft of this motor 1
meshes with a gear 4 rotatably mounted on the mounting plate 2.

Further, a pinion 5 fixed coaxially with the gear 4 meshes with a first intermediate gear 6 rotatably supported between a machine frame (not shown).

Then, the pinion 1 is sequentially connected to the second to fourth intermediate gears 7 to 9.
Rotation is transmitted via 0-12.

Further, a pinion 14 is fixed to the other end of the rotating shaft 13 to which the fourth intermediate gear 9 is attached.
4 meshes with a mainspring winding gear 16 fixed to a shaft 15.

An annular mainspring case 17 is rotatably attached to the other end of the shaft 15 having the mainspring winding gear 16, and a gear 18 is integrally formed on one side of the mainspring case 17. There is.

Here, the inner end of the mainspring (not shown) is fixed to the shaft 1b, and the outer end is fixed to the inside of the mainspring case 17, so that the mainspring case 11 and therefore the gear 18 move counterclockwise in the figure. It provides driving force to rotate.

Further, an output shaft 19 is arranged parallel to the shaft 15, and a pinion 20 provided at one end of the output shaft 19 meshes with the gear 18 and is driven by the driving force of the wound mainspring to 1/60.
r. p. It is rotated by m.

A pinion 21 that is integral with an intermediate gear 22 is fitted and fixed to the other end of the output shaft 19.

On the other hand, a time disk 23 is rotatably supported coaxially with the binion 21.

This time disk 23 has a 24-hour scale displayed on its surface, and a notch 23 into which instruction pins 24 and 25 are inserted every 15 minutes to indicate the workplace setting time, which will be described later.
There are many holes a.

On the other hand, an intermediate gear 26 meshes with the pinion 21, and a pinion 27 is provided coaxially with the intermediate gear 26.
is meshed with a gear 23b formed integrally with the time disk 23, and the time disk 23 rotates once every 24 hours.

On the other hand, a lever 30 is fixed via a cam 29 to the tip of the rotating shaft 28 to which the pinion 5 provided on the side surface of the motor is attached, and a speed regulating lever 31 is attached to the other end of the lever 30. One end is rotatably supported.

The central part of this speed regulating lever 31 is connected to the balance spring 3.
2. The flywheel 33 is rotatably fitted onto a shaft 34 to which the flywheel 33 is attached, and pins 31a and 31b for slidably holding the outer end of the hairspring 32 are implanted at one end thereof.

Also, a bottle 33a installed on the side of the flywheel 33
is fitted into a groove in the upper part of an escape mechanism 35, and the claw portion at the tip of the escape mechanism 35 is in a position where it can engage with the teeth of an escape wheel 36, which also constitutes the escape mechanism.

A pinion 38 is attached to the other end of the shaft 37 to which the escape wheel 36 is attached, and this pinion 38 meshes with a gear 39.

Further, a pinion 40 provided coaxially with this gear 39 meshes with a gear 41, and this gear 41 is in mesh with a pinion 42.
It meshes with.

Furthermore, a pinion 43 provided coaxially with this gear 41
meshes with a gear 44 provided on the output shaft 19.

Further, a shielding piece 45 is provided coaxially with the pinion 42, and this shielding piece 45 is divided into 1/2 by the combination of the gears.
72r. p. Rotate with s.

A detector 46 is disposed near the shielding piece 45, and as the shielding piece 45 is inserted, it emits a signal at a rate of one pulse every 36 seconds.

On the other hand, the gear 26 meshes with a pinion 47, and the gear 48 provided coaxially with this pinion meshes with a pinion 49.
The cam 50, which is in mesh with the pinion 49 and is provided coaxially with the pinion 49, is rotated.

This cam 50 rotates at a speed of 1/15 rpm and opens the microswitch 51 every 15 minutes.

Further, the locking pin 24. Rotating pieces 52, 53 are arranged at positions corresponding to 25, and these rotating pieces 52, 5
Microswitches 54 and 55 are arranged at positions facing 3.

Next, the operation of the apparatus of this embodiment configured as above will be explained.

When the motor is connected to a power source and rotates, the rotation is transmitted to the pinion 3, gear 4, and pinion 5, which further rotates the pinion 14 via intermediate gears 6 to 9 and pinions 10 to 12, and rotates the mainspring winding gear 16. Then, the mainspring in the mainspring case 17 is wound.

When the winding of the mainspring progresses to a certain extent, the elasticity of the mainspring and the contact pressure with the mainspring case 17 are balanced, the mainspring slips, and the winding of the mainspring stops.

The gear 18 rotates through the return force of the wound mainspring, and the rotation is transmitted to the output shaft 19 via the gear 18 and pinion 20, rotating the pinion 21 fitted thereto and , the minute disk 21a formed integrally with this is 1/60r. p. Rotate at a rotational speed of m.

At the same time, the time disc 23 is transferred to 24r. p. It is rotated at a rate of m.

On the other hand, the rotation of the motor is transmitted to the lever 30 via the shaft 28, but at this time the lever 30 performs reciprocating motion accompanied by rotational motion by the cam 29, causing the speed regulating lever 31 to oscillate about the shaft 34. cause dynamic movement.

As a result, the hairspring 32 is slidably held between the pins 31a and 31b, so the pressing position of the hairspring 32 is changed in accordance with the frequency of the AC motor, and its rotation period is periodically changed. give.

Therefore, the swinging period of the escape wheel 35 is also kept constant, and the period in which the escape wheel 36 returns with a spring is regulated.

This regulation results in adjusting the rotation of the output shaft 19 to accurate rotation according to the AC frequency, and the minute disk 21a
And the rotational speed of the time disk 23 can be maintained accurately.

At the same time, the rotation of the shielding piece 45 is also accurately adjusted, and the detector 46 transmits a signal at a rate of one pulse every 36 seconds.

On the other hand, indicator pins 24 and 25 are attached to the time disk 23, and these indicator pins 24 and 25 are used to regulate the restraint time, that is, the set time when, for example, flex time is introduced, and in the illustrated state, the indicator pins 24 and 25 are used to regulate the set time. Although they are installed in close proximity, in reality, for example, 10
They are attached at positions corresponding to intervals of several hours, such as from 15:00 to 15:00.

However, for example, the time from when the instruction bottle regulating the start of the set time, the instruction pin 25 in the figure engages the rotary piece 53 and closes the microswitch 55, to when it opens the microswitch 55 may vary depending on the specific design state. Although different, it takes 15 minutes in this example.

That is, the duration of one pulse transmitted by the microswitch 55 is 15 minutes, as indicated by the symbol a in FIG.

Therefore, exact start and end times cannot be detected.

On the other hand, the cam 50 is 1/15r. p. m, one pulse is transmitted every 15 minutes, and its duration is set to 4 minutes as shown by the symbol b in FIG.

This time corresponds to the time it takes for the contact piece 51a of the microswitch 51 to fit into the notch 50a of the cam 50 and to separate therefrom.

Therefore, by aligning the rise of the pulse b with the start or end point of the time and ANDing it with the pulse a, the exact time is determined and a device not shown is driven to record the set time. be able to.

The above explanation is an explanation of the operation when the motor 1 is energized, but in the event of a power outage, the drive of the motor 1 is stopped, so the mainspring winding gear 16 is not rotated, and the stored energy is The gear 18 is driven by the returning force of the mainspring, which drives the output shaft 19, and the time is displayed in the same manner as when the power is on.

At this time, the speed regulating lever 31 does not operate, but the claws at the tip of the escape gear 35 alternately mesh with the escape wheel 36, and the escape wheel 35 swings together with the flywheel 33, so that the output shaft 19
is regulated.

At this time, the hairspring 32 whose one end is fixed to the shaft 34 closes and repeats the flexing operation.

As is clear from the above description, according to the timer according to the present invention, the drive transmission by the AC moke is once transmitted to the output shaft via the spring winding gear, and the output shaft is rotated in synchronization with the rotation of the AC motor. Since it is equipped with a speed regulating mechanism that regulates the rotation, the output shaft does not stop even in the event of a power outage and continues to operate, and under normal conditions it can obtain accurate rotation in synchronization with the AC motor. .

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of the present invention, and FIG. 2 is an explanatory diagram of a method for detecting the start and end of a restraint time. 1...AC motor, 2...Mounting plate, 3, 5, 10, 11
, 12, 14, 20...pinion, 4, 6, 7, 8, 9
...Intermediate gear winding gear, 17...Spring case, 19...Output shaft, 21a...Minute disk, 23...Time disk, 24, 25...
... Indication pin, 30 ... Lever, 31 ... Speed control lever, 3
2...hairspring, 33...flywheel, 35...escape, 36...escape wheel, 45...shielding piece, 46...detector, 50...cam, 51, 54.55...micro switch, 52, 53...Rotating piece.

Claims (1)

[Claims] 1. A mainspring winding gear rotated via an intermediate gear by rotation of an AC motor, a mainspring case provided coaxially with the mainspring winding gear and having a gear integrally formed on one side thereof, and the mainspring case. An output shaft with a pinion that meshes with the gear, a time disk and a minute disk coaxially provided on the output shaft, and a set that is removably fitted into holes drilled at regular intervals on the periphery of the time disk. There are several indicator pins that indicate the time, a rotating piece that rotates when engaged with the indicator pin to open and close a switch, a speed regulating lever that swings in synchronization with the rotation of the AC motor, and this regulator. A speed regulating mechanism is composed of a speed lever, a hairspring, and an escapement mechanism connected via a flywheel, and controls the rotation of the output shaft, and a switch is rotated via an intermediate gear by the rotation of the output shaft to open and close a switch. A timer characterized by being equipped with a cam.