JPS6313640Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in a repeat timer that automatically and periodically controls on and off electrical equipment.

[Conventional technology]

Modern electrical equipment, such as air conditioners that cool or relax the air, are often equipped with automatic room temperature control devices. However, it has problems such as being difficult to operate and expensive. For this reason, there is a great demand for an inexpensive mechanical timer that can control the air conditioner, that is, control the on/off of its start switch. However, conventional mechanical timers with such functions are equipped with multiple cams and switches, which are operated in sequence to control the main device.
Not only is the structure complicated and the number of parts is large, it is also large, and it is difficult to make adjustments at arbitrary intervals in a short period of time, so it could not be adopted for this type of equipment.

[Problem that the invention attempts to solve]

In other words, in a mechanical timer, the control time is set by rotating the cam, and in order to be able to set the time limit in a short time and at arbitrary intervals, a larger setting cam must be used. There are some problems. However, as mentioned above, the timer required for this type of equipment must be small, and a mechanical timer that can arbitrarily adjust the operating time of the equipment has not been realized.

[Means for solving problems]

The present invention realizes a mechanical repeat timer that solves the above-mentioned problems.The switch operating cam, which is rotated by a drive source such as a motor, is composed of an eccentric cam. The switch to be operated is rotatably supported on the casing in a cantilevered state, and is biased in a direction away from the switch operating cam. It is characterized in that it is provided on the opposite side of the switch operating cam, and the setting cam is configured to rotate for setting via a setting shaft.

[Effect]

When the setting cam is rotated via the setting shaft, since the cam is configured as an eccentric cam, the free end of the switch is adjusted in the vertical direction, and the distance from the switch operating cam is adjusted. Furthermore, since the switch operating cam is also configured as an eccentric cam,
The operating position of the switch is adjusted as appropriate, and thereby the interval of operating time of the switch, that is, the time limit setting, is arbitrarily adjusted.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

FIG. 1 shows the overall structure of a repeating timer according to an embodiment, and this timer has a casing 1 formed into a substantially U-shape with a front wall 1a, a bottom wall 1b, and a rear wall 1c. On the inner surface of the rear wall 1c, a switch 2 that can be turned on and off is supported by a support shaft 3 near one end thereof, and the switch body 2a of the switch 2 has a contact inside. Its free end can be freely rotated in the vertical direction about the support shaft 3. Further, this switch 2 has a feeler 2b on the top surface, and is adapted to turn on an internal contact when the feeler 2b is pushed down to a predetermined position (a switch operating position to be described later) with respect to the switch body 2a. .

On the other hand, a torsion spring 6 is provided on a pin support shaft 5 provided on the rear wall 1c at a position above the switch 2, and one end of the torsion spring 6 is engaged with a pin shaft 7, and the other end is connected to the upper surface of the free end side of the switch body 2a. It is in ballistic contact with the As a result, the switch 2 is given a rotational habit of rotating the free end portion of the main body 2a downward. On the other hand, at a lower position on the free end side of the switch 2, a setting shaft 8 is supported across the front wall 1a and the rear wall 1c, and a knob 9 is provided at the end of the shaft protruding from the front wall 1a. It can be rotated by operation. A setting cam 10 constituted by an eccentric cam is fixed to this setting shaft 8, and the lower surface of the free end of the switch body 2a, which is urged downward by the torsion spring 6, is applied to the circumferential surface of the cam 10. It is in contact with it. A stopper mechanism (not shown) is provided between the setting shaft 8 and the front wall 1a to restrict the rotation range thereof. In addition, a knob 9 is provided on the front wall 1a.
A scale 9a is provided correspondingly. The rear wall 1c is located above the free end side of the switch 2.
An output shaft 11a of a motor 11 attached to the rear surface of the motor 11 is made to protrude, and a switch operating cam 12 is fixedly provided on this output shaft 11a. This switch actuating cam 12 is constituted by an eccentric cam and is engaged with the upper end of the feeler 2b of the switch 2.

Next, the operation of the repeat timer of this embodiment will be explained.

When the knob 9 is rotated to rotate the setting cam 10, the free end side of the switch body 2a is rotated in the vertical direction according to the shape of the eccentric cam, and the attitude of the switch 2 as a whole is changed. On the other hand, motor 11
The switch operating cam 12 is rotated as the switch is driven, and the feeler 2 is rotated according to the shape of the eccentric cam.
b is moved up and down as shown by the cam diagram in FIG. Therefore, the setting cam 10 is rotated to the position shown by the solid line in FIG.
When the free end of a is moved up as much as possible, switch 2
The switch switching position (indicated by the chain line Pa in the figure; the switch is turned on and off by moving the feeler 2b up and down from this position) is a position ( upper position)
becomes. Therefore, when the switch operating cam 12 rotates, the feeler 2b is always operated below the switch switching position Pa, and the switch 2 is always on, regardless of the shape of the eccentric cam. In addition, the setting cam 10 is rotated to the position shown by the imaginary line in FIG.
When the free end of is set to the lowest moving position, the switch switching position Pa is below the maximum radius of the switch operating cam 12. Therefore, even if the switch operating cam 12 rotates, the feeler 2b is only operated above the switch switching position Pb.
Switch 2 is kept in the off state without being turned on. These always-on and off states become cut lines Ca and Cb in FIG. 2, which do not intersect the characteristic curve (filler operating characteristic curve) X.

On the other hand, set the setting cam 10 to the maximum as shown in Fig. 3B.
If the rotation is changed within the minimum radius, the switch switching position Pc of the switch 2 can be arbitrarily set within the range of the switch operating cam 12. That is,
In Figure 2, the switch switching position Pc is at the cut line.
Cc, and the feeler 2b is at the switch switching position at the characteristic curve section below the cut line Cc.
PC is moved down and switch 2 is turned on. Since this cut line Cc is continuously moved up and down in FIG. 2 according to the rotation of the setting cam 10, the ON time of the switch 2 can be arbitrarily set according to the characteristic curve X. .

As a result, by rotating the setting cam 10, the on-time of the switch 2 can be arbitrarily set at appropriate intervals, and in the case of this embodiment, this can be repeated in one hour cycles.

Incidentally, in the above embodiment, if the connection of the switch is reversed, the on and off states will of course be reversed.

Therefore, if the repeat timer of this embodiment is used as a temperature controller for an air conditioner, the time interval for starting and stopping the equipment can be arbitrarily set within the range of one hour, and thereby the sleep function can be set as desired. , energy-saving operation, strong (continuous) operation, etc. can be arbitrarily selected to obtain a suitable room temperature.

[Effect of the invention]

As explained in detail above, according to the present invention,
This is because a switch whose one end is rotatably supported is operated by a switch actuating cam consisting of an eccentric cam, and the position of this switch is adjusted by a setting cam consisting of an eccentric cam. The present invention provides a repeating timer that allows the interval of switch operation time to be arbitrarily set, has a simple structure, is highly reliable, is easy to operate, and is small, lightweight, and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of the repeating timer according to the present invention, Fig. 2 is a diagram for explaining the on and off states of the switch, and Figs. 3 A and B are cutaway front views for explaining the action of the timer. It is a diagram. 1...Casing, 2...Switch, 2a...
Switch body, 2b... Feeler, 6... Torsion spring, 8... Setting shaft, 10... Setting cam, 11...
...Motor, 12...Switch operation cam.

Claims (1)

[Scope of utility model registration request] A motor, a switch drive cam consisting of an eccentric cam rotated by the motor, a switch that is biased in a direction away from the switch drive cam and rotatably supported on the casing in a cantilevered state, and On the other hand, it is equipped with a setting cam consisting of an eccentric cam located on the opposite side of the switch operating cam and supporting the free end side of the switch, and a setting shaft that adjusts this setting cam, and the setting cam is set via the setting shaft. A repeating timer characterized in that the timer is set by rotating the switch to adjust the position of the switch relative to the switch operating cam.