JPH0361778A - Operating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an actuating device that uses a solenoid to drive an actuating body with a maximum load when the actuating body starts to operate, and then the load decreases.

L Prior Art] Conventionally, as an operating device of this type, for example, the drainage water in a low tank type water supply device used for a flush toilet is 1! I#
There are 1 actuating devices. As shown in Fig. 4, a low tank type water supply device has a valve seat 3 that is opened and closed by a float valve 2 at a drain port provided at the bottom of a low tank l in which a certain amount of water is stored. is connected to a lever 5 by a chain 4, and when the handle 6 is operated, the lever 5 is rotated and the float valve 2 is pulled up together with the chain 4, floating in the water away from the valve seat 3, and the water in the tank 1 is When a certain amount of water flows out, the float valve 2 returns to the valve seat 3.
Water storage begins after the facility is closed. Instead of lifting the float valve 2 manually using the handle 6, some float valves 2 are raised automatically using a solenoid 7 disposed at the top of the low tank 1. In this case, as shown in FIG. 5, one end of the M4 is connected to the float valve 2, and the other end of the M4 is directly connected to the plunger 8 of the solenoid 7.

[Problems to be Solved by the Invention] In the conventional device, as shown in FIG.
The force required to lift the float valve 2, that is, the load on the float valve 2, is at its maximum at the moment when the float valve 2 is separated from the valve seat 3, and after the float valve 2 is separated from the valve seat 3, the load on the float valve 2
load decreases rapidly. On the other hand, the suction force of the solenoid 7 acting on the first plunger 8 is small when the amount of protrusion of the plunger 8 is large, and the suction force becomes larger as the plunger 8 is drawn into the solenoid 7. In the conventional actuating device, the maximum load of the float valve 2 is applied to the plunger 8 when the plunger 8 has a large protrusion. A capacity greater than the load is required, and as the solenoid 7 becomes larger, there is a problem in that the dissipating force increases.

The present invention has been made in view of the above-mentioned problems, and its purpose is to prevent the solenoid from increasing in size when a solenoid is used to drive an operating mechanism in which a maximum load is applied when the actuating body starts operating, and the load decreases thereafter. The object of the present invention is to provide an actuating device that consumes less power.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the present invention provides an actuating device that uses a solenoid to drive an actuating mechanism in which the actuating body has a maximum load at the start of actuation and then decreases in load. An elastic member is provided between the plunger and the actuating body to accumulate a biasing force for moving the working body in the operating direction as the plunger moves, and the biasing force is made larger than the maximum load of the operating body.

[Operation] In the device of the present invention, as the first flange is retracted by the drive of the solenoid, a biasing force for moving the actuating body in the operating direction is accumulated in the elastic member provided between the first flange and the actuating body. When the plunger is pulled into the solenoid near the end of its stroke, the biasing force accumulated in the elastic member becomes greater than the maximum load of the actuating body, and the actuating body is actuated by the biasing force of the elastic member.

[Embodiment 1] Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS. 1-2. Note that the same parts as those of the conventional device will be described with the same reference numerals. As shown in FIG. 1, in the solenoid 7, a yoke 10 in which a coil 9 is incorporated is housed in a gauging 11, and a fixed iron core 12 is fixed to the center of the upper part of the yoke 10.

The plunger 8 is slidably inserted into the center of the coil 9, and a locking pin 8a protruding from both ends of the plunger 8 is attached to a stopper 13 extending from the lower end of the casing 11.
The protrusion is controlled by engaging with the holder. One end of a tension spring 14 as an elastic member is fixed to the tip of the 1 langier 8, and the other end of the tension spring 14 is connected to the other end of the chain 4, which has one end connected to the float valve 2. The tension spring 14 has a spring constant such that when it is deformed by the movement of the plunger 8, the spring force at the time of maximum deformation is greater than the maximum load of the float valve 2.

Next, the operation of the apparatus configured as described above will be explained. When the solenoid 7 is in a non-energized state, the plunger 8 is held in a protruding state by its own weight to the position where the locking pin 8a engages with the stopper 13, and the chain 4 connecting the float valve 2 and the tension rod 14 is As shown in FIG. 1(a), the float valve 2 is held in a relaxed state by the length thereof, and the float valve 2 is held in a closed state by being pressed against the valve seat 3 by water pressure. When the solenoid 7 is energized from this state, the plunger 8 is pulled by the attraction force of the solenoid 7.

As the plunger 8 moves upward, the loosening of M4 is eliminated, resulting in the state shown in FIG.
4 are pulled together. Then, as the plunger 8 moves upward, the tension spring 14 is further stretched, as shown in FIG.
Immediately before the upper end of the plunger 8 is attracted to the fixed iron core 12 as shown in d), the spring force of the tension spring 14 becomes greater than the maximum load of the float valve 2, and the upper end of the plunger 8 is attracted to the fixed iron core 12. Its upward movement is stopped. In this state, the tension spring 14 begins to contract against the load on the float valve 2, and the float valve 2 is pulled away from the valve seat 3, opening the valve seat 3, and the water in the tank is discharged through the valve seat 3. be done. After the float valve 2 is separated from the valve seat 3, the tension spring 14 is further compressed and returns to its original state, resulting in the state shown in FIG. 1(f). When the solenoid 7 is demagnetized after a predetermined amount of water in the tank has been discharged, the first langeer 8 is moved downward by its own weight and returns to the state shown in FIG. 1(a).

The suction force of the solenoid 7 against the plunger 8 increases as the plunger 8 is drawn into the solenoid 7. The suction force is as shown in FIG.
The maximum load on the float valve 2, that is, the force that separates the float valve 2 from the valve seat 3, is smaller than the maximum load on the float valve 2 from the start of its upward movement until the time when most of the 1 langeer 8 is drawn into the solenoid 7, but during this period, the tension spring 14 gradually increases. When the tension spring 14 is stretched, a biasing force that moves the float valve 2 upward is accumulated in the tension spring 14. Then, when the state shown in FIG. 1(d) is reached (position shown as d in FIG. 2), the spring force of the tension spring 14 becomes greater than the maximum load of the 70-tooth #2, and the float valve 2 It is pulled up by the action of the tension spring 14. In other words, the suction force of the solenoid 7 has to be a value slightly larger than the maximum load of the float valve 2 when n is applied to the granger 8 at its maximum value. When the suction force of the solenoid 7 is at its minimum, the 71 foot valve 2 can be opened and closed with a smaller capacity solenoid 7 compared to conventional devices which require a value larger than the maximum load of the float valve 2.

For example, a solenoid that uses a single current of the same magnitude!
! ! If left behind, its size (body m) will be approximately 1/1 of the conventional size.
3, and if the solenoids are the same size, the power consumption will be approximately ]/4.

[Actual meal example 2] Next, a second embodiment will be described with reference to FIG.

In this embodiment, the plunger 8 is formed in the shape of Ei, and the rod 16 is housed inside so as to be able to protrude from the lower end of the plunger 8. A compression spring 15 is interposed between the 7 langes 16a formed at the upper end and the inner surface of the lower end of the plunger 8. In this embodiment, when the 1 langier 8 is pulled up with the excitation of the solenoid 7, the compression spring 15 is compressed, and a biasing force for lifting the float valve 2 upward is accumulated in the compression spring 15. Similarly to the above, when the spring force of the compression spring 15 becomes greater than the maximum load of the float valve 2, the float valve 2 is pulled up via the chain 4 by the action of the compression spring 15. In this embodiment, the compression spring 15, which is an elastic member, is housed within the plunger 8, so that it can be made smaller than the previous embodiments.

Note that the present invention is not limited to the two embodiments described above, and for example, instead of arranging the solenoid 7 outward of the low tank 1, it may be arranged in the upper space within the low tank 1 or in the water. With this configuration, the solenoid 7 does not protrude to the outside of the low tank 1, resulting in a clean appearance. Alternatively, the fixed iron core 12 may be omitted; in this case, when the plunger 8 is moved upward, the plunger 8
The collision noise between the iron core 12 and the fixed iron core 12 is eliminated, and the number of man-hours during assembly is reduced, resulting in lower manufacturing costs. Furthermore, as long as the IJ mechanism uses a solenoid to drive the actuating body that has the maximum load at the start of operation, it can be applied to devices other than the low tank drainage model.

[Effects of the Invention] As described in detail above, according to the present invention, when the actuating body that has the maximum load at the start of operation is driven by the solenoid, the suction force of the solenoid is effectively used to operate the actuating body through the elastic member. Therefore, it becomes possible for the solenoid to drive the actuating body with its suction force having a capacity slightly larger than the maximum load of the actuating body, making it possible to downsize the solenoid and reduce power consumption.

[Brief explanation of drawings]

Figure 1.2 shows an embodiment in which the present invention is embodied in a drainage mechanism of a low tank type water supply device used in a flush toilet, and Figures 1 (a) to (f) illustrate the operation. 2 is a diagram showing changes in the suction force of the solenoid acting on the plunger, FIG. 3 is a schematic sectional view of the second embodiment, FIG. 4 is a schematic sectional view of the low tank, and FIG. The figure is a schematic diagram of a conventional actuating device, and FIG. 6 is a diagram showing the relationship between the suction force of a solenoid and the load characteristic of a float valve.

Claims (1)

[Claims] 1. In an actuating device in which a solenoid (7) drives an actuating mechanism in which the actuating body (2) has a maximum load when the actuating body (2) starts operating, and then the load decreases, the plunger (8) of the solenoid (7)
) and the actuating body (2) are provided with elastic members (14, 15) that accumulate a biasing force for moving the working body (2) in the operating direction as the plunger (8) moves, and the biasing force is An actuating device characterized in that the load is greater than the maximum load of an actuating body (2).