JPS6250935B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-operating 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-operating type time switch, as shown in FIG. 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 to rotate 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 parts 30 each having a rectangular cross-sectional shape and having a groove 31 and a hole 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 engaging portion 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 occur as expenses increase. In addition, the user must select and attach the switching claws that correspond to the switches 8, 9, and 10 to be operated, so the user must handle the time switch properly.
The operation is complicated, and three types of switching claws 40 are required.
If any of the switching claws 1, 402, and 403 are lost, they cannot be replaced with other switching claws, which often causes problems in operation. Therefore, it is necessary to pay close attention to the loss of switching claws. Ta.

Furthermore, this type of time switch is, for example, 1
The minimum switching setting time is 15 with the scale plate 3 that rotates once a day.
For those divided into 32 sets of switching claws 401, 4
02,403 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, and the remaining switching claws 401, 402, 403 need to be stored. In the switch, a storage section for storing the remaining switching claws 401, 402, 403 is specially provided 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, 40
Attach two of each of 2,403 to the scale plate 3, and leave the remaining
Thirty pairs of switching claws 401, 402, and 403 must be stored, which requires a large space to store the remaining switching claws, and in addition, they can be removed from the scale plate 3 and placed in another storage area. Because it has to be stored, handling is complicated, and the switching claw 40
1,402,403 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 numbers of both of these switching claws 401, 402, 403, all of the 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 detect 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 with a switching pawl mounting structure.

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

FIG. 3 is a partial cross-sectional view showing the main parts of the switching pawl mounting structure of a time switch according to the present invention;
b, c, and d represent different mounting states. In FIG. 3, reference numeral 3 denotes a scale plate, and 30 denotes a locking portion having a substantially rectangular cross section, two sides of which are formed by a groove 31 and a hole 32 provided on the outer periphery of the scale plate 3.

Reference numeral 4 denotes a switching claw, which is made of elastic synthetic resin or the like and has an H-shape, and includes a first counter leg 41 that snaps onto the locking portion 30 in correspondence with the structure 31 and hole 32 of the scale plate 3; 42 and the second pair of legs 43 and 44 are the center piece 4
The legs 41 and 4 are arranged on both the upper and lower sides of the
3 and 44, one drive tooth 46,
47 and 48 protrude from the center piece 45 at different positions. 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 that the leg 41 of the switching claw 4 is inserted into the groove 31 of the scale plate 3, the leg 42 is inserted into the hole 32 of the scale plate 3, and the first pair of legs 41, 42 are connected to the locking part of the scale plate 3. 30 is shown in the first operating position (switching pawl attachment position where one switch can be operated), and in this case, the driving tooth 46 is attached to the cam 5.
It is in a position where it meshes with the passive teeth 51 of , and serves as the conventional first switching pawl 401.

FIG. 3b shows the second operating position (with the legs 43 and 44 of the switching claw 4 inserted into the groove 31 and the hole 32, respectively, so that the second opposing legs 43 and 44 snap onto the locking part 30). other 1
In this case, the driving teeth 47 are in a position where they mesh with the passive teeth 61 of the cam 6, and the role of the conventional second switching pawl 402 is shown. to play.

FIG. 3c shows the third operating position (with the legs 44 of the switching claw 4 inserted into the groove 31 and the legs 43 inserted into the holes 32, and the second opposing legs 43, 44 snapped onto the locking part 30). the other one
In this case, the driving teeth 48 are in a position where they mesh with the passive teeth 71 of the cam 7, and the role of the conventional third switching pawl 403 is shown. to play.

FIG. 3d shows the installed state in which the legs 42 of the switching claw 4 are inserted into the grooves 31 and the legs 41 are inserted into the holes 32, and the first opposing legs 41, 42 are snapped into the locking portion 30. In this case, the drive teeth 46, 47, 48 are both in neutral positions where they do not 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
can be operated evenly 32 times, and it is also possible to operate only switch 8 96 times unevenly and not operate other switches 9 and 10. Vessel 8, 9, 1
0 equally 32 times, 32 of each of the three types of switching claws 401, 402, 403 are prepared, and when only the switch 8 is operated 96 times, only the first switching claw 401 is prepared. This eliminates the problem that the types and number of switching claws to be prepared differ depending on the type of control, such as the need to prepare 96 switching claws. 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. This can be done by preparing 96 switching claws of 1/3 of each type. Further, according to the present invention, the drive tooth 4
Since the switching pawl 4 can be attached to the scale plate 3 so that the teeth 6, 47, and 48 do not mesh with any of the passive teeth 51, 61, and 71, the unused locking portion 30 on the scale plate 3 can be left unused. It can be used to store the switching pawls 4 of , 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 are attached to the scale plate 3. Since the switching claw 4 can be kept in place, there is no risk of losing the switching claw 4.
Furthermore, even if it is lost, it can be clearly seen that it has been lost, so it is possible to provide a time switch that has the effect of allowing new parts to be replaced appropriately. 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 gain a degree of freedom in the layout design.

[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
FIG. 2 is a partial cross-sectional view showing a main part of a switching pawl mounting structure according to an embodiment of the present invention, with the switching pawl mounted at different positions. 3... Scale plate, 30... Locking part, 31... Groove,
32... Hole, 4... Switching claw, 41, 42, 43,
44...Leg, 45...Central piece, 46, 47, 48
... Drive tooth, 5, 6, 7 ... Cam, 51, 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. A multi-acting time switch that incorporates a plurality of switches includes a scale plate that rotates at a constant speed, a large number of locking portions formed on the outer periphery of the scale plate, and the locking portions on both upper and lower sides of the center piece. an H-shaped switching pawl that has four legs each having a pair of legs that snap into engagement with the locking portion, and that can be selectively hit in four ways by reversing the top, bottom, left, and right of the locking portion; Each one is provided on the outside of any three of the four legs, respectively, so as to protrude outward.
three drive teeth 46, 47, 48, and three passives that are rotated by meshing with the drive teeth of the switching pawl that is installed near the outer periphery of the scale plate and moves as the scale plate rotates. a starting device that operates the switch having teeth 51, 61, 71 and corresponding to the rotation of each of the passive teeth, and the three drive teeth 46, 47, 48 are connected to the locking portion of the switching pawl. A time switch characterized in that the time switch is formed at different positions relative to the central piece so as to mesh with the three passive teeth 51, 61, and 71, respectively, by only three mounting methods.