JPH036079B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This device relates to a seismic device that automatically disables, for example, a refueling machine when an earthquake occurs. Since the sliding body can be held in a horizontal position, malfunctions can be prevented, and operation tests can be easily performed. This is attached to a sliding body that has a knob on the other end and is attached to the same camshaft and is supported by a position adjustment means consisting of a small eccentric cam for horizontal positioning and a large eccentric cam for operation testing. A tilting spring is loaded to bias the position adjustment means, a level is provided on the upper surface of the sliding body, and the seismic switch is a mercury switch provided on the sliding body.

Next, the case where the first embodiment is implemented at a gas station with reference to FIGS. 1 to 7 will be explained.
Figures 3 and 4 show a vibration sensing device, in which one end of a sliding body 1 is pivotally attached to a substrate 3 with a horizontal shaft 2 as an attitude adjustment means, and a small eccentric cam 4 and a large eccentric cam are used as position adjustment means at the other end. 5, a knob 7 is attached to the camshaft 6, a tilting spring 8 for biasing the sliding body 1 toward the position adjustment means is loaded, and a level 15 is provided on the top surface of the sliding body 1.

Mercury 10 is placed in an upward recess 9 provided in the sliding body 1, a contact 11 is provided that contacts the mercury 10 when the sliding body 1 is in a horizontal position, and the contact 11 and the mercury 10 are connected to terminals 12 and 13, respectively. and forms an earthquake-sensing B contact switch X.

To explain the circuit in Figure 5, relay 1
6. A contact 1 of B contact push button switches 17 and 16
6' are connected in series, and two A contacts are connected in parallel with A contact 16'.
Contact 18 of contacts 18 and 18' of the contact push button switch is connected.

A relay 19, a seismic switch

Earthquake display lamp 21 and B contact 1 of relay 19
9'' are connected in series, and a series circuit consisting of the buzzer 22 and the A contact 16'' of the relay 16 is connected in parallel with the lamp 21.

The refueling ready indicator lamp 23 and the A contact 19 of the relay 19 are connected in series.

Each of the above circuits is connected to a power source 24 via a main switch 25.

The power supply 24 is connected to the fuel supply machines 26, 26', 2 through the main switch 25 and the A contact 19'''' of the relay 19.
Connect to 6″.

Next, to explain the operation, if the base plate 3 of the seismic switch is fixed almost horizontally and the eccentric cam 4 is turned through the knob 7, the sliding body 1 will slide around the horizontal axis 2, so the spirit level 15 If the seismic sensor is placed in a horizontal position while looking at the
remains closed.

This horizontal position adjustment is easy to see while operating because the spirit level 15 is attached to the top surface of the sliding body 1. In addition, after the sliding body 1 is installed in the horizontal position, the sliding body 1 is adjusted by the tilting spring 8 under normal conditions. This normal horizontal position is maintained because the eccentric cam serving as the adjustment means is biased in the four directions.

When refueling, close the main switch 25 and
When the continuous push button switch is pressed and the contacts 18 and 18' are momentarily closed, the relay 16 is energized and the contact 16' is closed, self-holding, and the contact 16'' is closed. At the same time, the relay 19 is energized and the contact 19', 18' is closed. 19,
19'''' is closed and contact 19'' is open.

By closing the contact 19', the relay 19 is self-retained, and by closing the contact 19,
The refueling ready indicator lamp 23 lights up, and the contact 19''
By opening, the earthquake display lamp 21 does not light up and the buzzer 22 does not sound. And contact point 19
When ``'''' closes, the refueling machines 26, 26', 2
6'' becomes ready for refueling and enters the state shown in FIG.

Now, when an earthquake occurs, the seismic device vibrates, so the mercury 10 in the recess 9 moves horizontally,
Separate from contact 11 for a moment and switch B contact switch X
opens momentarily. At this time, since the vibration sensing device is accurately set in a horizontal position by the eccentric cam and the tilting spring 8, the movement of the mercury 10 is reliably performed.

When the shock-sensing B contact switch Therefore, the earthquake display lamp 21 lights up, the buzzer 22 sounds, and the contact 19 opens, making the refueling machines 26, 26', and 26'' unable to refuel.
The state shown in FIG. 7 is reached.

To stop the operation of the buzzer 22, press the push button switch 17 to open it, the relay 16 will be deenergized, the contacts 16' and 16'' will open, and the buzzer 22 will stop sounding.

Once the earthquake has stopped, after confirming safety,
Press the double A contact push button switch to close contacts 18,1.
If you close 8' for a moment, the above operation will be performed and the 6th
As shown in the figure, the state is ready for refueling.

To stop the refueling machine 26 in an emergency other than when an earthquake occurs, open the push button switch 20 momentarily, and the relay 1
9 is deenergized, contact 19'''' is opened and refueling is disabled.

To test the operation of the seismic device, turn the knob 7 to a large angle so that the large eccentric cam 5 engages with the lower surface of the sliding body 1, the sliding body 1 slides greatly, and the mercury 10 flows out from the recess 9 and contacts the contactor. 11 and the shock-sensing B contact switch X is opened, so it is possible to check whether the electric circuit is working properly.

Next, the second embodiment will be explained with reference to FIGS. 8 to 11. FIG. 8 shows a seismic sensing device, in which one end of a sliding body 1' is connected to a horizontal axis 2' as an attitude adjustment means to a substrate 3. ', and the other end is attached to a small eccentric cam 4'.
and a large eccentric cam 5', a knob 7' is attached to the cam shaft 6', and a tilting spring 8' is loaded to the sliding body 1'.
A spirit level 15' is also provided.

Mercury 10' is inserted into the upward recess 9' provided in the sliding body 1'.
, and when the sliding body 1' is in the horizontal position, the mercury 1
A contactor 11' is provided which is spaced apart from the contactor 11'.
and mercury 10' are connected to terminals 12' and 13', respectively, to form an earthquake-sensing A contact switch X'.

To explain the circuit in Fig. 9, relay 27,
28 is connected to the B contact push button switch 29 via the switching contact 28' of the relay 28, and the relay 28 is connected in series to the parallel circuit of the earthquake sensing B contact switch X' and the A contact push button switch 31.

Earthquake display lamp 32 and A contact 2 of relay 28
Connect 8" in series.

Series circuit of relay 33 and B contact push button switch 34 and buzzer 35 and A contact 3 of relay 33
3', the switching contact 28 of the relay 28
, and the A contact 33'' of the relay 33 is connected in parallel with the switching contact 28 of the relay 28.

A relay 27 is connected in series with the refueling ready indicator lamp 36.
Connect the A contact 27'.

The power source 37 is connected to the fuel supply machine 39, 39'39'' via the main switch 38 and the A contact 27' of the relay 27.

Next, to explain the operation, if the base plate 3' of the seismic switch is fixed almost horizontally and the eccentric cam 4' is turned via the knob 7', the sliding body 1' will slide around the horizontal axis 2'. If you look at the spirit level 15' and place it in a horizontal position, the seismic device will be installed in the normal position and the mercury 1
0' is separated from the contactor 12' and becomes de-energized, and the seismic switch X' remains open.

This horizontal position adjustment is easy to see while operating because the spirit level 15' is attached to the top surface of the sliding body 1'.
Under normal conditions, the sliding body 1' is urged by the tilting spring 8' in the direction of the eccentric cam 4', which is the position adjusting means, so that this normal horizontal position is maintained.

When refueling, close the main switch 38, the relay 27 will be energized, the contact 27' will close, the refueling ready indicator lamp 36 will light up, the contact 27'' will close, and the refueling machines 39, 39', and 39'' will begin refueling. It becomes possible.

Further, the relay 33 is energized, the contact 33'' is closed and self-held, and the contact 33' is closed, but the buzzer 35 does not sound because the switching contact 28 is open. This state is shown in FIG.

When an earthquake occurs, the seismic sensing device vibrates, and the mercury 10' in the recess 9' moves horizontally and momentarily contacts the contact 11', causing the seismic B contact switch X' to momentarily touch. Since the seismic sensing device is precisely set in the horizontal position, the movement of the mercury 10' is ensured.

When seismic B contact switch X' closes, relay 2
8 is energized, switching contacts 28', 28'' are switched, and contact 28'' is closed.

By switching the switching contact 28', the relay 28 is self-held, the relay 27 is deenergized, the contact 27' is opened, and the refueling ready indicator lamp 36 is activated.
disappears, contact 27'' opens and refueling machine 39, 39'3
9″ cannot be refueled.

When the changeover switch 28 is changed over, the buzzer 35 sounds, and when the contact 28'' is closed, the earthquake display lamp 32 is turned on. This state is shown in FIG. 11.

To stop the operation of the buzzer 35, open the B contact push button switch 34 momentarily, the relay 33 will be deenergized, the contact 33'' will open and the self-holding will be released, the contact 33' will open, and the buzzer 35 will stop sounding.

Once the earthquake has stopped, after confirming safety,
When the B contact push button switch 29 is pressed and opened momentarily, the relay 28 is deenergized, the switching contacts 28' and 28 are restored, the relay 27 is energized, and the contact 27'' is closed.
As shown in FIG. 10, the state becomes ready for refueling.

To stop the refueling machine 39 in an emergency other than when an earthquake occurs, close the A contact push button switch 31 momentarily.
Perform the same operation as when an earthquake occurs as described above, and contact point 2
7" opens, making it impossible to refuel.

To test the operation of the seismic device, turn the knob 7' by a large angle, the large eccentric cam 5' will engage with the lower surface of the sliding body 1', the sliding body 1' will move greatly, and the mercury 1
0' flows out from the recess 9' and touches the contact 11',
Since the seismic A contact switch X' is closed, it is possible to check whether the electrical circuit is working properly.

The vibration sensing device of this invention can be easily and accurately installed in a horizontal position while checking a level, so it will operate reliably in the event of an earthquake.Also, since it is held in a horizontal position by a spring during normal times, it is not used when an earthquake occurs. This can prevent erroneous operation at times.

Furthermore, since the structure and operation are simple and operation tests can be easily performed, operation in the event of an earthquake can be more reliable.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a gas station equipped with the seismic sensing device of the present invention, Fig. 2 is a front view of the control panel, Fig. 3 is a side view with a portion of the seismic sensing device cut away, and Fig. 4 is the same as above. Front view, Figure 5 is the wiring diagram when not in use, Figure 6 is the wiring diagram when refueling is possible, Figure 7 is the wiring diagram when the seismic switch is activated, and Figure 8 is the other wiring diagram of the seismic sensor. A partially cutaway side view of the embodiment, FIG. 9 is a wiring diagram in an unused state, FIG. 10 is a wiring diagram in a state where refueling is possible, and FIG. 11 is a wiring diagram in a state in which the seismic switch is activated. 1', 1''...Sliding body, 2, 2'...Horizontal axis, 9,
9...Upward recess, 10,10'...Mercury, 11,
11'...Contact, X...Seismic B contact switch,
X'...Seismic A contact switch, 16...Relay,
16', 16''...A contact of relay 16, 17...
B contact push button switch, 18, 18'... Double A contact push button switch, 19... Relay, 19'... A contact of relay 19, 19''... B contact of relay 19, 19'''''... A contact of relay 19, 20...
B contact push button switch, 22... Buzzer, 24...
Power supply, 26, 26', 26''...Refueling machine, 27, 2
8...Relay, 28', 28...Switching contact of relay 28, 29...B contact push button switch, 31...
...A contact push button switch, 37...Power supply, 39,3
9′, 39″…Refueling machine.

Claims (1)

[Claims] 1.Equipped with an earthquake-sensing switch and an attitude adjustment means, the attitude adjustment means having one end pivoted to a board with a horizontal shaft,
The position adjustment means is attached to a sliding body that has a knob at the other end and is supported by a position adjustment means that is attached to the same camshaft and consists of a small eccentric cam for horizontal positioning and a large eccentric cam for operation testing. 1. A seismic sensing device, characterized in that the seismic sensing device is equipped with a tilting spring that biases the body, a spirit level is provided on the upper surface of the sliding body, and the seismic switch is a mercury switch provided on the sliding body.