JPH024087B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a dial mechanism for a repeating time switch.

[Background technology]

Conventionally, there are typical repeatable time switches shown in FIGS. 1 and 2. That is, the dial body 1 rotates at a constant speed at a constant cycle, and a plurality of setters 2 attached to the outer periphery of the dial body 1 actuate a switch 3 to turn on/off electrical equipment at a predetermined time. This has a configuration in which a setter 2 is inserted and fixed into a plurality of setter holes 4 arranged in a row on the peripheral edge of a dial body 1, and the end of the setter 2 switches a switch 3. For example, the setter hole 4 is
They are set at 15 minute intervals. The switch 3 is opened and closed each time each setter 2 operates the switch lever 3a with which it engages.

In this conventional device, the setting element 2 is the dial body 1.
It is prepared separately from the switch 3, and the setter 2 is inserted into the setter hole 4 corresponding to the time when the switch 3 needs to be changed.
The setter 2 had to be inserted and fixed, and the setter 2 had to be removed from the setter hole 4, which did not require switching. As a result, changing the device position of the setter 2 in response to a change in the switch switching time is relatively complicated and easy to make mistakes, and unused setters 2 are easily lost. Furthermore, it was necessary to provide a housing section for the unused setter 2 in the time switch main body 5.

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, and 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.

Therefore, we proposed a system in which a setting element is swingably attached to the dial body, and the on/off switching is performed by raising and lowering the setting element (Japanese Patent Application No. 58-31403). According to this, the setting is easy and problems such as loss of the setter can be solved. However, it was difficult to confirm the raised/lowered state of the setter, and the reliability of the setter operation was insufficient.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a dial mechanism for a time switch that allows easy operation of the setter and improves reliability of operation due to the click feeling.

[Disclosure of the invention]

The dial mechanism of the time switch of this invention is
A setter is rotatably fitted into each of the many setter holes provided in the dial body, and a ring-shaped spring is removed from the dial body to hold the setter at an angle at which the switch engaging portion thereof protrudes and at an angle at which it retracts. It was fitted and installed. The ring-shaped spring is provided with a click protrusion, and the setter is provided with a spring engaging protrusion that goes over the click protrusion.

Embodiment An embodiment of this invention is shown in FIGS. 3 to 16. This dial mechanism includes a dial body 6,
It is made up of a plurality of (for example, 96) setters 7 and a ring-shaped spring 8, and a switch lever 9 and a switch 10 constitute a time switch. The dial main body 6 is a disc-shaped member made of hard synthetic resin or metal, and is rotatably fitted into the shaft portion 11a of the case 11 through the central hole 12, and is rotated at a constant cycle by the clock mechanism. A plurality of setter holes 13, which are fitted into the front and back surfaces of the dial body 6 and extend in the radial direction, are arranged radially near the outer periphery. Further, a bearing recess 14 having a circular cross section is formed on the surface of the dial body 6 between each setter 7 . An arcuate guide 1 is provided on the back of the dial body 6.
5 is provided protrudingly.

The setter 7 is fitted into the setter hole 13 of the dial body 6, and is supported by a shaft portion 7a protruding from both sides in a bearing recess 14 so as to be vertically movable. Setter 7
has a switch engaging claw 7b that protrudes into the back side of the dial body 6 as it rotates, and the switch engaging claw 7b engages the dial body 6 at two positions: the maximum protruding angle and the recessed angle. It is stabilized in contact with the surface portions 6a, 6b. A spring engaging protrusion 7c is provided at the lower part of the setter 7. Further, the setter 7 is provided on both sides of the switch engagement protrusion 7b with a thick wall portion 7d that rotates and slides along the arcuate guide 15 of the dial body 6.
has. The setter 7 is molded by filling the setter hole 13 with synthetic resin, and is assembled into the dial body 6. Due to the contraction of the synthetic resin, play is formed between the setter 7 and the inner surface of the setter hole 13 to allow the setter 7 to rotate.

The ring-shaped spring 8 is made of a spring member such as plastic or metal, and is fitted onto the dial body 6 and fixed thereto. The ring-shaped spring 8 has a large number of click protrusions 8a that protrude downward from each setter 7.
radially, and when the click protrusion 8a engages with the spring engaging protrusion 7c of the setting element 7, the setting element 7 can be adjusted between the upright angle (Fig. 5) and the tilt angle (Fig. 6). hold in position. The click protrusion 8a has a bulge 8b at its tip. The ring-shaped spring 8 has a different color from the dial body 6 and setting element 7 (for example, red).
As the setter 7 rotates, the upper surface 8c of the ring-shaped spring 8 is covered or exposed, making it possible to display on/off status.

The switch lever 9 is attached to the case 11 so as to be rotatable around a vertical axis of rotation 9a, and its upper end engages with the switch engaging protrusion 7b of the setting element 7, and its lower end drives the switch 10. .

Operation FIG. 5 shows the on state, and FIG. 6 shows the off state. In the ON state, the setting element 7 is at an angle such that the switch engaging protrusion 7b protrudes perpendicularly to the back side of the dial body 6. Therefore, as the dial body 6 rotates, the switch engaging protrusion 7b of the setting element 7 The switch lever 9 is rotated to turn on the switch 10. In the OFF state, the switch engaging protrusion 7b of the setting element 7 is recessed into the setting element hole 13,
Therefore, it passes directly over the switch lever 9.

In this way, the switch 1 can be set by simply rotating the setter 7 like a seesaw while it is inserted into the setter hole 13.
Since the on/off operation of 0 can be performed, there is no need to provide a storage section for the setting element 7, unlike the conventional setting element in which the setting element is attached/detached, and the setting element 7 can be made smaller and more compact. Moreover, problems such as loss of the setter 7 or incorrect attachment of the setter 7 are eliminated. Since the setter 7 is rotated in a seesaw manner, it can be operated more smoothly than, for example, when it is slid back and forth in a straight line. Further, when changing between the on state and the off state, the spring engaging protrusion 7c of the setter 7 rides over the click protrusion 8a of the ring-shaped spring 8, so that a click feeling and a click sound can be obtained. Therefore, the on/off setting of the setter 7 can be confirmed intuitively, and the reliability of the operation of the setter 7 is improved. The click feeling and sound can be changed by changing the spring pressure of the click protrusion 8a. In addition, the setter 7 is connected to the surface portion 6 of the dial body 6 in the on state and the off state.
Since it is pressed by the click protrusion 8a in contact with a and 6b, this state is stably maintained. In the on state, the end face 7e of the setter 7 is in the setter hole 13.
Therefore, when the switch engaging pawl 7b of the setter 7 comes into engagement and pressure contact with the switch lever 9, it becomes a supporting stopper and prevents the setter 7 from rotating inadvertently.

As described above, the setter 7 can be molded in a state where it is assembled with the dial body 6, which saves assembly time, homogenizes the quality of the parts, and improves the material yield. Further, since the ring-shaped spring 8 is made in a different color from the setting element 7 and is covered with the setting element 7, on/off status can be clearly displayed by color. Each click protrusion 8b is provided on a ring-shaped spring 8, and this ring-shaped spring 8 is fitted to the outer periphery of the dial body 6. Therefore, when a large number of click protrusions 8 are provided on the dial body 6, the structure and assembly are simplified. It's easy.

17 to 19 show other embodiments.
In this example, a dial body engaging protrusion 8c is provided at the base end of the click protrusion 8a of the ring-shaped spring 8, and is engaged with the lower end of the radially outer surface of the setter hole 13 of the dial body 6. . When the spring engaging protrusion 13a of the setter 7 rides over the click protrusion 8a due to the rotation of the setter 7, the ring-shaped spring 8 receives a force that tries to expand in the outer circumferential direction, but the ring-shaped spring 8 is not engaged with the dial body. The engagement of the mating projections 8c prevents the ring-shaped spring 8 from expanding. In addition, Fig. 20 and 2
As shown in FIG. 1, the dial body engaging protrusion 8c may have a triangular shape.

〔Effect of the invention〕

The dial mechanism of the time switch of this invention is
It has the following effects. Since the setter is held in the 2nd position by riding over the click protrusion, the reliability of the operation can be improved due to the click feeling. Each click protrusion is provided on a ring-shaped spring, and this ring-shaped spring is fitted onto the outer periphery of the dial body, so that the structure and assembly are simple even though a large number of click protrusions are provided on the dial body. Since the ring-shaped spring is simply attached to the dial body, the number of parts is small and the structure is simple.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional example, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view of an embodiment of the present invention, and Fig. 4 is a sectional view of the conventional example.
The figure is a partially enlarged plan view, and Figure 5 is the - of Figure 4.
A line sectional view, FIG. 6 is a - line sectional view of FIG. 4,
7 and 8 are a partial plan view and a sectional view of the dial body, respectively, and FIGS. 9 to 11 are plan views of the setter, respectively.
A side view and a bottom view, FIGS. 12 to 16 are respectively sectional views, a schematic plan view, a schematic side view, a partial sectional view and a partial perspective view of the ring-shaped spring, and FIGS. 17 to 19 are respectively other views. FIGS. 20 and 21 are a schematic plan view, a partial sectional view, and a partial perspective view of the ring-shaped spring in the embodiment, and FIGS. 20 and 21 are a partial sectional view and a partial perspective view, respectively, of the ring-shaped spring in another embodiment. 6... Dial body, 7... Setting element, 7a...
Spring engaging protrusion, 7b...Switch engaging claw, 8...
Ring-shaped spring, 8b...Click protrusion, 8c...
Dial body engaging protrusion, 9... switch lever,
10...Switch.

[Claims]

1 A status signal contact X that operates according to a change in the device status, and a 3-pole instantaneous contact type contact a ₃ that is connected in series to the status signal contact X and is energized when the status signal contact X changes.
a state relay A for operating the state signal contact X; and a state relay A for determining the initial state of the state signal contact X.
A condition signal contact Y that operates instantaneously; a condition relay C connected in series to the condition signal contact Y and energized when the condition signal contact Y is turned on; and a condition relay C connected by the three-pole instantaneous contact contact _A3 .
a detection relay D _{which is short-circuited via a second make contact c 2 of} the condition relay C; and a holding circuit, when the condition signal contact Y is on, the condition relay C is energized, the first make contact _c1 and the second make contact _c2 are turned on, and the detection relay D is turned on, the detection relay make contact d is operated, the condition relay C enters the self-holding state via the first make contact _c1 , and the condition signal contact X changes,