JPS6212615B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a setting pawl mounting structure for a multi-action time switch that opens and closes a plurality of switches at a plurality of set times.

Generally, in a multi-acting type time switch, as shown in FIG.
A scale plate 3 that rotates at a constant speed through the dial and rotates once a day.
A plurality of setting pawls 4 are attached to the setting pawls 4, and the driving teeth 40 provided on the setting pawls 4 drive the passive teeth 51 of the cam 5 and the passive teeth 61 of the cam 6, thereby rotating the cams 5 and 6. It is configured to open and close switches 8 and 9.

As a conventional setting claw mounting structure for this type of multi-action time switch, structures shown in FIGS. 1 and 2 have been proposed.

That is, a groove 3 is formed on the outer periphery of the scale plate 3, which rotates once a day.
A large number of locking portions 30 each having a rectangular cross-sectional shape consisting of a hole 32 and a hole 32 are provided radially.For example, when the minimum switching setting time is 15 minutes, 96 locking portions 30 are provided, and the setting claw 4 is Consisting of opposing legs 41 and 42 corresponding to the groove 31 and hole 32 of the scale plate 3 and drive teeth 40,
The counter leg 4 of the set claw 4 is set in the groove 31 and hole 32 of the scale plate 3.
1 and 42, respectively, and the locking portion 30 is made to snap onto the setting pawl 4, thereby attaching the setting pawl 4 to the scale plate 3.

However, in the conventional device of this kind, as shown in FIG.
As shown in FIG.
As shown in FIG.
Three types of setting pawls have been used, including a third setting pawl 403 having two driving teeth 40 that mesh simultaneously with 1 and 61, but since there are many types of setting pawls 4, manufacturing costs and management costs increase. The cost increases due to
It is necessary to select and install setting claws according to the time switch, which not only complicates the handling and operation of the time switch, but also requires the use of three types of setting claws 401, 402, 403.
Even if one of the setting claws is lost, it cannot be replaced with another setting claw, which often causes problems in operation. Therefore, it is necessary to be extremely careful in case the setting claw is lost.

In addition, in this type of time switch, for example, for a scale plate 3 that rotates once a day and a minimum switching setting time of 15 minutes, there are 32 sets of setting claws 40.
1,402,403 are prepared, so the number of setting claws 401, 402, 403 to be installed differs depending on how many times the switches 8, 9 are opened and closed.
It is necessary to store the remaining setting claws 401, 402, and 403, but in conventional time switches of this type, the remaining setting claws 401 are stored in a structure near the scale plate 3, such as a case (not shown). ,4
02, 403 is specially provided, and for example, when each switch 8, 9 is opened/closed once each, setting claws 401, 402,
403 must be attached to the scale plate 3 as shown in the first figure, and the remaining 31 sets of setting pawls 401, 402, 403 must be stored, so a large space is required to store the remaining pawls. Since the setting claws 401 and 40 must be removed from the scale plate 3 and stored in a separate storage section, handling is complicated and the setting claws 401, 40
There are various disadvantages such as easy to lose 2,403.

In addition, there are two setting claws 40 on the scale plate 3 and the storage part.
1,402,403 are installed separately,
Unless you count the number of both setting claws 401, 402, 403, all setting claws 401, 402,
It also has the drawback that it is impossible to judge whether all the setting claws 403 are present or not, and it is extremely difficult to discover if the setting claws 401, 402, 403 are missing.

This invention was made in order to solve the above problem, and includes an opening/closing operation in which one switch is selected using one type of setting claw that can change the mounting direction on the scale plate, and a simultaneous opening/closing of switches. The purpose of the present invention is to obtain a time switch that can be operated and set to disengage.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained below based on the drawings.

That is, FIGS. 3A, 3B, 3C, and 3 are partial sectional views showing the setting claw of the present invention and the state in which it is attached.
A, B, C, and D each indicate different mounting states.

In FIG. 3, 3 is a scale plate, 30 is a locking part whose two sides are formed by a groove 31 and a hole 32 provided on the outer periphery of the scale plate 3, and its cross section is approximately rectangular. has been done. Reference numeral 4 denotes a setting pawl, and this setting pawl 4 is made of elastic synthetic resin or the like in an H-shape, and is elastically attached to the locking portion 30 in correspondence with the groove 31 and hole 32 of the scale plate 3. One pair of legs 41, 42 and a second pair of legs 43, 44 are arranged on both sides of the center piece 45, and one leg 41,
One drive tooth 49, 46 on the outside of 43, respectively.
and two drive teeth 4 on the outside of the other leg 44.
7,48 are provided. The width L from the inside of both legs to the tip of the tooth is smaller than the width L of the hole 32 of the scale plate 3.

Next, the procedure for attaching the setting pawl to the time switch of the present invention constructed as described above will be explained.

That is, in FIG. 3A, the legs 41 of the setting claw 4 are inserted into the grooves 31 of the scale plate 3, the legs 42 are inserted into the holes 32 of the scale plate 3, and the first pair of legs 41, 42 are engaged with the scale plate 3. The mounting state is shown in which the stopper 30 is elastically inserted, and in this case, the drive tooth 49 is in a position where it meshes with the passive tooth 51 of the cam 5, and the conventional first setting pawl 4 described above
It plays the same role as 01.

Next, in FIG. 3B, the leg 43 of the setting claw 4 is inserted into the groove 31
Then, insert the leg 44 into the hole 32 and insert the second pair of legs 43,
44 is elastically inserted into the locking part 30, and in this case, the drive tooth 46 is in a position where it meshes with the passive tooth 61 of the cam 6, unlike the conventional second
It serves the same role as the setting claw 402 of.

Next, as shown in FIG. 3C, the leg 44 of the setting claw 4 is
Then, insert the leg 43 into the hole 32 and insert the second pair of legs 43,
44 is elastically inserted into the locking part 30, and in this case, the drive teeth 48, 47 are in a position where they mesh with the passive teeth 51, 61 of the cams 5, 6,
It serves the same role as the conventional third setting pawl 403 described above.

FIG. 3 D shows the installed state in which the legs 42 of the setting claw 4 are inserted into the groove 31 and the legs 41 are inserted into the holes 32, and the first pair of legs 41 and 42 are elastically inserted into the locking part 30. In this case, drive teeth 46, 47, 48, 49
Needless to say, neither of the passive teeth 51 and 61 mesh with each other.

As explained above, according to the mounting structure of the setting pawl in the time switch of the present invention, both the switches 8 and 9 can be controlled by one type of setting pawl 4. When setting claws are prepared, each switch 8, 9 can be opened and closed 32 times evenly, or it is possible to operate only switch 8 48 times unevenly, and the other switches 9 You can also disable it.

In addition, in the case of the above-mentioned conventional device, if the switches 8 and 9 are to be opened and closed 32 times evenly, the three types of setting claws 401, 402, and 403 are set 32 times each.
In addition, if only the switch 8 is to be opened and closed 48 times, the first setting claw 4 must be prepared.
The problem is that the type and number of setting claws that should be prepared differs depending on the control state, such as having to prepare 96 pieces of 01 only.

In other words, the conventional structure has the disadvantage that three times as many setting claws (96 first, second, and third setting claws each) as the setting claw mounting structure of the present invention must be prepared. It also has the disadvantage of requiring an extremely large storage space for the remaining nails.

Furthermore, according to the setting pawl mounting structure of the present invention, the driving teeth 46, 47, 48, 49 are connected to the passive teeth 5.
Set claw 4 so that it does not mesh with either 1 or 61.
can be attached to the scale plate 3, so the unnecessary locking part 30 formed on the scale plate 3 can be used as it is for storing the unnecessary setting pawl 4, and unlike the conventional one, it is possible to separately store the unnecessary pawl. There is no need to set up a department.
Moreover, since all 96 setting claws 4 can be attached to the scale plate 3, there is no risk of losing the setting claws 4.
Even if it were to be lost, it would be obvious at first sight that new parts could be procured appropriately.

[Brief explanation of the drawing]

Figure 1 is a schematic perspective view of a conventional time switch.
Figures 2A, 2B and 2C are partial sectional views showing how the conventional setting pawls are attached, and Figure 3 A, 2B, 3C, and 2 are partial sectional views showing how the setting pawls are attached in an embodiment of the present invention. be. In the drawing, 3 is a scale plate, 30 is a locking part, 4 is a setting claw, 41, 42, 43, 44 are legs, 46, 47,
48 and 49 are drive teeth. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A setting pawl that is removably attached to the outer periphery of a scale plate that rotates at a constant speed and has drive teeth that drive the first and second cams in accordance with the rotation of the scale plate, in which the setting pawl is is formed into a substantially H-shape so that it can be attached to and changed from the scale plate, and first and second drive teeth are respectively provided on the outer side of one of the two legs, and are arranged in parallel on the outer side of the other leg. third and fourth drive teeth, and mutually different first and second positions in which the first and second cams are individually driven by the first and second drive teeth; A time switch characterized in that it can be set to a third position in which both cams are simultaneously driven by the third and fourth drive teeth, and a fourth position that is also used for storage, in which the cams are not driven.