JPS6250934B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-operation type time switch that opens and closes a plurality of switches at a plurality of set times, and particularly to a time switch with an improved mounting structure for a switching claw.

In general, a multi-action time switch has a plurality of scale plates 3, which are rotated at a constant speed by a synchronous motor 1 via a driving force transmission wheel train 2, and rotate once a day, as shown in Fig. 1. The switching pawls 4 are attached, and the driving teeth 40 provided on these switching pawls 4 actuate the passive teeth 51 that actuate the cam 5 in the starter device, the passive teeth 61 that similarly actuate the cam 6, and the driven teeth 61 that similarly actuate the cam 7. The switches 8, 9, 10 are opened and closed by kicking the passive teeth 71 and rotating the cams 5, 6, 7.

Conventionally, as a switching pawl mounting structure for this type of multi-action time switch, the structure shown in FIGS. 1 and 2 has been proposed. That is, when a large number of locking portions 30 having a rectangular cross-sectional shape and consisting of grooves 31 and holes 32 are arranged radially on the outer periphery of the scale plate 3 that rotates once a day, for example, when the minimum switching time is 15 minutes, There will be 96 pieces. The switching claw 4 includes 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 switching claw 4 is inserted into the groove 31 and hole 32 of the scale plate 3.
1 and 42 respectively, and connect them to the locking part 30.
The switching claw 4 is attached to the scale plate 3 by making it land on the scale plate 3.

However, the conventional device described above has a first switching pawl 401 having a drive tooth 40 that meshes only with the passive teeth 51 of the cam 5 as shown in FIG. 2a, and a cam 6 as shown in FIG. 2b. a second switching pawl 402 having a driving tooth 40 that meshes only with the passive tooth 61 of FIG.
As shown in the figure, three types of switching claws are used, including a third switching claw 403 having a driving tooth 40 that meshes only with the passive teeth 71 of the cam 7. Since there are many types of switching claws, manufacturing costs and management costs are reduced. An increase in costs will result. The user also operates the switch 8,
Since the switching claws corresponding to 401 and 401 must be selected and installed, handling and operation of the time switch is complicated.
If either of 02 or 403 is lost, it cannot be replaced with another switching claw, which often interferes with the operation. Therefore, it is necessary to pay close attention to the loss of powder from the switching claw. It was hot too.

Furthermore, this type of time switch is, for example, 1
The minimum switching setting time is 1 with the scale plate 3 that rotates once a day.
For those with 5 minutes, 32 switching claws 401,
402, 403 are prepared, so switches 8, 9,
The number of switching claws 401, 402, 403 to be installed differs depending on how many times 10 is opened and closed.
It is necessary to store the remaining switching claws 401, 402, 403, but in conventional time switches of this type, the remaining switching claws 401, 402, 403 are stored in a structure near the scale plate 3, such as a case. For example, when each switch 8, 9, 10 is opened/closed once, the switching claws 401, 402, 4 are provided.
03 must be attached to the scale plate 3, and the remaining 30 pairs of switching claws 401, 402, 403 must be stored, which requires a large space to store the remaining switching claws. Moreover, scale plate 3
Since it has to be removed from the housing and stored in a separate storage section, handling is complicated, and the switching claws 401, 40
It has the disadvantage that 2,403 is easily lost.

In addition, there are switching claws 40 at two locations: the scale plate 3 and the storage section.
1,402,403 are installed separately,
If you do not count the number of both switching claws 401, 402, 403, all switching claws 401, 40
It is not possible to determine whether 2,403 are complete,
It also has the disadvantage that it is difficult to discover when the switching claws 401, 402, 403 lose powder.

This invention was made in view of the above-mentioned circumstances, and is a novel method that allows any switch to be controlled with one type of switching claw, and does not require a special storage section for storing the remaining switching claws. The present invention aims to provide a time switch having a switching pawl mounting structure.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a partial sectional view showing a main part of a switching pawl mounting structure for a time switch according to an embodiment of the present invention, and a, b, c, and d represent different mounting states. In Fig. 3, 3 is a scale plate;
30 is a groove 31 provided on the outer periphery of the scale plate 3.
It is a locking portion having a substantially square cross section with two sides formed by the hole 32 and the hole 32.

Reference numeral 4 denotes a switching pawl, which is made of elastic synthetic resin or the like and has a concave shape as a whole, and one drive tooth 44, 45, 46 is formed on each of three outer sides. That is, one driving tooth 44, 45 is provided on each of the two opposing legs 41, 42, and one driving tooth 44 is provided on a connecting piece 43 connecting the legs 41, 42.
6 is provided protrudingly. Since the locking portion 30 is formed in a substantially square shape and the switching claw 4 is formed in a concave shape, the switching claw 4 can be viewed from either the upper surface side or the outer surface side of the scale plate 3. It can be installed on. Furthermore, the width l from the inside of the leg to the tip of the drive tooth is the width L of the hole 32 in the scale plate 3.
It is made to be smaller than. Note that the configuration other than those described above is substantially the same as that shown in FIG. 1 above.

Next, a description will be given of how to attach the switching claw using the switching claw mounting structure of the time switch constructed as described above.

FIG. 3a shows how the switching claw 4 is connected to the locking part 30 of the scale plate 3.
2 shows the state of the first operating position in which the legs 41 and 42 are attached from the outer surface side upward and downward, respectively.
The driving tooth 46 of the connecting piece 43 is in a position where it meshes with one passive tooth 51 of the starting device, and serves as a conventional first switching pawl 401.

FIG. 3b shows that the switching claw 4 is connected to the locking part 30 of the scale plate 3.
From the top side, insert the legs 42 into the holes 32 and the legs 41 into the grooves 31.
In this case, the legs 42, 41 are attached to both the inner and outer surfaces of the locking part 30, and the drive tooth 44 is attached to the other one of the actuating devices. It is in a position where it meshes with the two passive teeth 61, and serves as a conventional second switching pawl 402.

FIG. 3c shows that the switching claw 4 is connected to the locking portion 30 of the scale plate 3.
From the top side, insert the leg 42 into the groove 31, and insert the leg 41 into the hole 32.
In this case, the legs 41 and 42 are attached to both the inner and outer surfaces of the locking part 30, and the drive tooth 45 is inserted into the activating device. It is in a position where it meshes with one passive tooth 71, and serves as the conventional third switching pawl 403.

FIG. 3d shows how the switching claw 4 is connected to the locking plate 30 of the scale plate 3.
2 shows a neutral position in which the legs 42 and 41 are attached from the outer surface side upward and downward, respectively. In this case, the legs 42 and 41 are attached to the upper and lower surfaces of the locking part 30, None of the driving teeth 44, 45, 46 mesh with any of the passive teeth 51, 61, 71.

As explained above, the switching pawl mounting structure of the time switch of the present invention allows one type of switching pawl 4 to control any of the switches 8, 9, and 10. If several switching claws are prepared, each switch 8, 9, 10
It is possible to operate the switch 8 evenly 32 times, or it is also possible to operate the switch 8 unevenly, for example, 96 times and not to operate the other switches 9 and 10. In the conventional system, in such a case, that is, when each switch 8, 9, and 10 is operated 32 times, the number of
Each type of switching claw 401, 402, 403
In addition, if only the switch 8 is operated 96 times, it is necessary to prepare 96 first switching claws 401, depending on the type of control. Although there was a problem that the types and numbers of these were different, the present invention can eliminate such problems. That is, according to the present invention, conventionally it was necessary to prepare 96 each of the first, second, and third switching claws, and the storage space for the remaining switching claws that were not used was also required to be extremely large. Of,
All you need to do is prepare 96 switching claws of 1/3 type. Further, according to the present invention, the drive teeth 44, 4
Since the switching pawl 4 can be attached to the scale plate 3 so that the teeth 5 and 46 do not mesh with any of the passive teeth 51, 61, and 71, the unused locking portion 30 formed on the scale plate 3 can be used as is for unused switching. It can be used to store the pawls 4, and there is no need to provide a separate storage section for unused switching pawls as in the conventional case, and all 96 switching pawls 4 can be mounted on the scale plate 3. Therefore, there is no fear that the switching claw 4 will be lost, and even if it is lost, it can be clearly seen that it has been lost, so a time switch can be provided which has effects such as being able to properly replace new parts. Furthermore, in the case of a conventional device in which, for example, one driving tooth meshes with two passive teeth by attaching one driving tooth to a locking portion of a switching pawl, the positioning of the group of passive teeth with respect to the scale plate must be set extremely strictly. However, according to the time switch of the present invention, there is some degree of freedom in positioning the passive tooth group. In other words, in the case of the conventional device as described above, the one driving tooth always takes charge of the upper and lower passive teeth, so the passive tooth group is divided into two equal parts in the height direction and the thickness of the scale plate. It must be accurately positioned to match the bisecting positions.

However, in the present invention, since it is possible to make some adjustment by changing the position of the drive teeth provided on each side of the switching pawl, strict heightwise positioning of the passive tooth group with respect to the scale plate is not required, and as a result, other parts You can also have a degree of freedom in designing the layout.

In this invention, the structure of the switching pawl 4 and the locking part 30 is not necessarily limited to that of the embodiment described above, and the switching pawl 4 is connected to the locking part 30 from two directions, the top surface and the side surface of the scale plate 3. As long as it can be hit by a ball, it can be modified as appropriate, such as those shown in FIGS. 4, 5, and 6. That is,
In the one shown in FIG. 4, the switching claw 4 has angle-shaped legs 41 and 42 (shape almost L-shaped), and protrusions 47 and 48 that hold the locking part 30 at the outer ends of these legs 41 and 42.
, and drive teeth 46 are provided on one of the projecting pieces 47 and 48. The one shown in FIG. 5 has portions 41a, 42a, and 30a that are engaged with the opposing surfaces of the legs 41 and 42 of the switching claw 4 and the outer surface of the locking portion 30, and the locking portion 30 of the switching claw 4 is This makes it possible to ensure that the bullet hits the target. The one in Figure 6 has the locking part 30 rotated by 90 degrees compared to the one in Figure 3◇
The inner surface of the switching pawl 4 has a shape corresponding to the cross section. And Figures 4 and 5
The embodiment shown in FIGS. and 6 is also mounted in the same way as the embodiment shown in FIG. 3, and the same functions and effects can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view for explaining the schematic structure of an example of a conventional time switch, and Fig. 2 a, b, and c are sections showing main parts of a conventional switching pawl mounting structure in different states in which the switching pawl is attached. Cross-sectional view, Figure 3 a, b, c, d
4, 5, and 6 are partial cross-sectional views showing essential parts of a switching claw mounting structure according to an embodiment of the present invention, with the switching claw mounted at different positions, and FIGS. FIG. 4 is a partial sectional view of a main part corresponding to FIG. 3 of a switching pawl mounting structure according to another embodiment different from FIG. 3... Scale plate, 30... Locking part, 31... Groove,
32...hole, 4...switching claw, 41,42...leg,
43... Connection piece, 44, 45, 46... Drive tooth,
47, 48... protrusion, 5, 6, 7... cam, 5
1, 61, 71... Passive tooth, 8, 9, 10... Switch. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. In a time switch that incorporates multiple switches, there is a scale plate that rotates at a constant speed, a number of locking parts formed on the outer periphery of the scale plate, and a number of locking parts that are connected to the locking parts from above and from the side. A switching pawl formed in a concave shape as a whole and capable of being selectively landed in four ways with the left and right sides and top and bottom reversed, and three drive teeth 46, 4 protruding outward from the outside of three sides of the switching pawl, respectively.
4, 45, and three passive teeth 51, 61, 71 which are installed near the outer periphery of the scale plate and are rotated by meshing with the drive teeth of the switching pawl that move as the scale plate rotates. and a starting device that operates the switch corresponding to each rotation of the passive tooth, and one drive tooth 46 is attached to the locking portion of the switching pawl in two ways, so that one of the driving teeth The other two driving teeth 44 and 45 are in a position where they mesh with the passive tooth 51 or do not mesh with any of the passive teeth, and the other two driving teeth 44 and 45 are connected to the locking portion of the switching pawl.
A time switch characterized in that it is formed at a position where it meshes with the other two passive teeth 61 and 71, depending on how it is installed.