JPH0218505Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a repeatable time switch.

[Background technology]

Conventionally, there are typical repeatable time switches shown in FIGS. 7 and 8. That is,
It consists of a plurality of setters 72 attached to the outer periphery of a dial main body 71 that rotates at a constant speed at a constant cycle to operate a switch 73 to turn on and off electrical equipment at a predetermined time. This is dial body 7
A plurality of setter holes 7 arranged in a line on the periphery of 1
A setter 72 is inserted and fixed into the setter 4, and the end of the setter 72 switches a switch 73. The setter holes 74 are provided, for example, at intervals of 15 minutes. Switch lever 73a with which each setter 72 engages
The switch 73 is opened and closed each time the switch is activated.

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, so there is no need to change the switch. The setter 72 had to be removed from the setter hole 74. As a result, changing the mounting position of the setting element 72 in response to a change in the switch switching time is relatively complicated and easy to make mistakes, and the setting element 72 that is not in use is 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, 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.

On the other hand, a groove was formed in the setter hole, and a setter having an overhang that slidably engaged with the groove was passed through the setter hole.
−42586). With this device, the setting element operation is easy to understand, erroneous operation is less likely to occur, there is no problem of losing the setting element, the setting element can be easily operated, and the switch operation can be performed reliably.

However, since it is necessary to form a groove in the setter hole, the board for forming the setter hole needs to be composed of two parts, which requires assembly. It had the disadvantage that it was complicated because it had to be assembled while matching.

[Purpose of invention]

The purpose of this invention is to provide a time switch that is easy to assemble.

[Disclosure of invention]

This invention is based on a time switch in which a setter provided on the outer periphery of a dial that rotates at a constant speed is engaged with a lever, and the lever opens and closes the switch contacts. A hole is provided, and a setter is attached to the setter hole so that it can move forward and backward in the radial direction of the dial. The setter is provided with a retaining collar on the front and back surfaces of the dial, and the inner surface of the collar and the outer surface of the dial in contact with the inner surface are removably engaged with each other to move the setter to the inner or outer position. It is provided with an engaging protrusion and an engaging recess that are held in the opposite position.

Embodiment An embodiment of this invention is shown in FIGS. 1 to 4. In the figure, 1 is a disc-shaped dial,
It is driven to rotate around its center O at a constant speed. A setter hole 2 extending in the radial direction on the outer periphery of the dial 1
A large number (96 pieces, for example) are provided at a constant pitch, and a setter 3 is attached to each setter hole 2. On the outer periphery of the surface of the dial 1, an on display section 4 whose color is different from that of other parts and the setting element 3 is provided. The ON display section 4 is provided by two-color molding, printing, or the like. Further, two concentric engagement grooves 5 and 6 are provided on the outer peripheral edge of the back surface of the dial 1.

The setter 3 has a fitting part 3a that fits into the setter hole 2.
It has a pair of retaining flanges 3b and 3c that are in contact with the display side surface and the back surface of the dial 1, respectively, a lock protrusion 3d that protrudes to the back side of the dial 1, and an operation protrusion 3e that protrudes to the front side. Inset part 3
A is formed shorter than the setter hole 2 by the length for forward and backward movement. The flange portions 3b and 3c extend in the radial direction of the dial 1, and an engagement protrusion 7 that removably engages with the engagement grooves 5 and 6 of the dial 1 is provided on the inner surface of the flange portion 3c on the back side. . The setter 3 is made of resin, and the flanges 3b and 3c have elasticity.

After the dial 1 is molded, the setter 3 is
The dial 1 is molded into the setter hole 2 by using it as a part of a mold. Depending on the shrinkage rate of the molding material, it is possible to mold the setter 3 so that it can slide into the setter hole 2.

In addition, below the dial 1 is the center P (Fig. 2).
A switch lever 8 that rotates in the periphery and a switch contact (not shown) that opens and closes as the switch lever 8 rotates are provided. The switch lever 8 is held at a predetermined angle by a spring and a stopper (not shown).

Operation As shown in FIG. 1, the setter 3 is turned on when slid towards the center of the dial 1, and turned off when slid outward. T ₁ indicates an on period, and T ₂ indicates an off period. In the on period _T1, the on display section 4 is exposed from below the setting element 3, so that it can be seen at a glance that the device is in the on state.
The setter 3 in the on state engages with the switch lever 8 as shown in FIG. 2A as the dial 1 rotates, causing the switch lever 8 to rotate. This rotation closes the switch contact. The setter 3 in the OFF state passes through without hitting the switch lever 8 as shown in FIG. 2B.

It works like this, but setter 3 is dialed 1.
Since it is permanently installed on the outer periphery of the switch, there is no risk of losing it, and it is easy to turn on/off and change settings. Therefore, erroneous operations are less likely to occur. Furthermore, when the setter 3 is moved outward, the engagement protrusion 7 of the setter 3 engages with the engagement groove 6 on the outer periphery of the dial 1, and when moved inward, the engagement protrusion 7 of the setter 3 engages with the engagement groove 6 on the outer periphery of the dial 1. It engages with the matching groove 5. Therefore,
The setting element 3 does not slide inadvertently, the operation is reliable, and a click feeling is obtained when the setting element 3 is slid, so that setting can be performed reliably. Also, if the setter 3 is molded separately from the dial 1 and installed in the setter hole 2 one by one,
Although it takes a lot of time to assemble, since the setter 3 and dial 1 are integrally molded as described above,
No assembly time required. Moreover, by integrally molding, the precision of the setter 3 and the dial 1 can be made uniform, and material loss can be reduced.

In the above embodiment, when the setter 3 is moved inward, it is engaged with the switch lever 8, but the switch lever 8 may be provided so that it is engaged when it is moved outward. .

5 and 6 show other embodiments. In this example, a ring-shaped engagement protrusion 9 is provided on the outer periphery of the back surface of the dial 1, and the engagement protrusion 9 is provided on the flange 3c of the setter 3.
An engagement recess 10 that engages with the holder is provided. The engagement recess 10 engages with the engagement protrusion 9 when the setter 3 is moved outward (on state). The other configurations are similar to the first embodiment. Even with this configuration, the same effects as in the first embodiment can be obtained.

[Effect of idea]

The time switch of this invention has a flange that guides and holds the setter on the edge of the setter hole, so there is no need for a groove in the setter hole as in the past, and the dial is made of two parts. It is easy to assemble because there is no need to configure it, and the setting element operation is easy to understand, making it difficult to operate incorrectly, and there is no problem of losing the setting element.Furthermore, the setting element can be easily operated, and the switch operation is reliable. .

[Brief explanation of the drawing]

FIG. 1 is a partial plan view of an embodiment of this invention, FIGS. 2A and B are explanatory diagrams of its operation, FIG. 3 is a partial perspective view of the same, and FIG. 4 is a perspective view of the setter. FIG. 5 is a partial perspective view of another embodiment, FIG. 6 is a perspective view of its setter, and FIG. 7 is a plan view of the conventional example.
FIG. 8 is a longitudinal sectional front view thereof. 1... Dial, 2... Setter hole, 3... Setter, 3a... Inset part, 3b, 3c... Flange part, 3d
...Kick protrusion, 4...On display section, 5, 6...
Engagement groove, 7... Engagement protrusion, 8... Switch lever, 9... Engagement protrusion, 10... Engagement recess.

Claims (1)

[Scope of utility model registration request] A disc-shaped dial, a mechanism for rotating the dial at a constant speed, a plurality of setter holes provided on the outer periphery of the dial to extend in the radial direction at a constant pitch in the circumferential direction, and each of the setter holes a setter that is attached so as to be movable in the radial direction and has a pair of flanges that extend outward in the radial direction of the dial in contact with a display side surface and a back surface of the dial, respectively; and an inner surface of the flanges of the setter. and an engaging protrusion provided on one of the surfaces of the dial in contact with the inner surface, and an engaging protrusion provided on the other of the inner surface of the flange and the dial surface and detachably engaged with the engaging protrusion, and the setter an engaging recess for holding the dial in a radially outward position or an inward position of the dial; and an engaging recess for holding the setter in a radially outward position or an inward position of the dial; A time switch equipped with a switch lever and switch contacts that are opened and closed by the switch lever.