JPH0921696A - Earthquake sensor and emergency alarm having built-in earthquake sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake sensor and the emergency alarm, which are operat ed surely only for a preset time when shaking occurs at a preset value or more in an earthquake and the like and can be provided at a low cost. SOLUTION: In a seismic intensity less than a specified value, a magnet 20 and a magnetic alloy reed 32 of a reed switch 30 attract to each other. The magnet 20 and the reed 32 are separated when fluctuation occurs by more than a specified value. Thus, contact parts 34 and 35 are opened and closed in this earthquake sensor 11. A control circuit is turned on for a preset time by the operation output signal of the earthquake sensor 11. An alarming means is operated by the control circuit. At the normal time when the shaking is small, both parts maintain the shortest distance. Therefore, the reed switch 30 is turned on by the magnet 20, and the alarming means is not operated. When the shaking becomes higher than a preset value, the magnet 20 is instantaneously separated from the magnetic alloy reed 32, the reed switch 30 is turned off and the alarming means using light, sound or the like is operated. When the shaking becomes small, the magnetic alloy reed 32 and the magnet 20 attract to each other, and the initial state is resumed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed to activate an alarm means by light, sound, etc. for a certain period of time (for example, 60 seconds) when a tremor exceeding a preset value (for example, a tremor of seismic intensity of 2 or more) occurs. The present invention relates to an earthquake sensor and an emergency notification device incorporating the earthquake sensor.

[0002]

2. Description of the Related Art Lighting is extremely important for evacuation and preparation when a building is greatly shaken or a power failure occurs due to an earthquake, typhoon, accident or the like at night. However,
The flashlight that was prepared for emergency is useless because if the furniture collapses, is scattered, or has a power failure due to a large earthquake, the flashlight itself will also be scattered and you will not be able to find the place where it was installed. There are cases. In such a case, when the shaking of the building exceeds the preset shaking, it is desired that the notifying means by light, sound, etc. be activated for a set time to illuminate the feet and the like, or notify the installation place. In addition, it is convenient to have a device that automatically stops and returns to the initial state when a necessary time elapses when the user is away or is not popular.

[0003]

However, there has not been a conventional emergency notification device that can reliably meet the above-mentioned demands and that operates reliably at a low cost. At a minimum, it can be easily installed by locking or sticking it at each point of the escape route in ordinary households, and the price is low (for example, 1 to 2,000 yen)
In the past, there has been no emergency notification device that operates reliably.

The present invention has been made in view of the above-mentioned problems, and when an earthquake, typhoon, accident, or the like causes a building to shake more than a preset amount, light, sound, or other notification means is operated for a preset time. Another object of the present invention is to provide an emergency notification device, which has a simple structure and is inexpensive, which automatically stops the notification means and returns to the initial state when a time required for evacuation or the like after operation has elapsed.

[0005]

According to the present invention, the magnet 20 attracts each other with the magnetic alloy reed 32 of the reed switch 30 when the seismic intensity is lower than a predetermined value, and separates when the magnet 20 swings with a seismic intensity higher than the predetermined value. Accordingly, the seismic sensor 11 that opens and closes the contact portions 34 and 35, the control circuit 37 that is turned on for a set time by the operation output signal of the seismic sensor 11, and the notification by light, sound, or the like that operates during the set time of the control circuit 37. An emergency notification device comprising means 12.

The magnet 20 has a shaking direction of 3 due to an earthquake or the like.
The magnet 30 is formed of a columnar permanent magnet so that the reed switch 30 can be reliably operated in any direction of 60 degrees, and the magnet 30 is suspended from the fixed portion K by the suspending member 24.

[0007]

In the initial state where the magnet 20 does not swing due to attraction between the reed switch 30 and the magnet 20, the distance L between the magnetic alloy reed 32 and the magnet 20 is set to be the shortest distance La. . Shake is a set value (for example, seismic intensity 2
In normal times, the distance L is the shortest distance La.
In order to maintain the above, the reed switch 30 is under the influence of the magnetic flux from the magnet 20 and is on during the normally open type, and is off during the normally closed type. For this reason, the notification means 12 by light, sound, etc. does not operate.

When the shaking exceeds a set value (for example, shaking of seismic intensity 2), the force for separating the magnet 20 from the magnetic alloy lead 32 becomes larger than the attractive force M of the magnet 20, and the magnet 20 is separated instantaneously. However, when it is a normally open type, it is turned off, and when it is a normally closed type, it is turned on. For this reason, the timer circuit 50 sets the first switching element 5 for the set time.
2 is turned on, and the notification means 12 for emergency light, sound, etc. is activated.

When the shaking such as an earthquake becomes small and the force for keeping the distance L at the shortest distance La by the attraction force M of the magnet 20 becomes larger than the force for separating the magnet 20 from the magnetic alloy lead 32, the magnetism is increased. Alloy lead 32 and magnet 2
0 and 0 attract each other, and the distance L between the two automatically returns to the initial state in which the shortest distance La is maintained. That is, the initial state is restored without performing the return operation.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the earthquake sensor 11 and the emergency notification device incorporating the earthquake sensor 11 according to the present invention will be described below with reference to the drawings. First, the seismic sensor 11 will be described with reference to FIGS. 23 is a housing made of transparent plastic or the like.
It has a rectangular parallelepiped shape of width × height = 20 to 30 × 20 to 30 × 40 to 60 mm. An adjusting screw 21 is screwed into the center of the upper surface of the housing 23 so as to be vertically adjustable, and a suspending member 24 including a thread shown in FIG. 1 and a chain shown in FIG. 2 from a fixing portion K at a lower end of the adjusting screw 21. The magnet 20 is suspended at.

The magnet 20 is made of a cylindrical permanent magnet, and has a weight 2 formed of a non-magnetic material such as lead on the outer peripheral portion.
2 is fixed. The weight 22 is formed in a columnar shape with the magnet 20 penetrating and fixed to the center hole so that the center of gravity of the weight 22 substantially coincides with an extension line of a straight line connecting the N and S poles of the magnet 20.

Below the magnet 20, a reed switch 30 is provided substantially vertically at a predetermined interval. The reed switch 30 is a normally open type that is turned off when an external magnetic field is not applied, and includes a pair of magnetic alloy leads 32 and 33 and the magnetic alloy lead 3.
The contact points 34 and 35 are formed at the inner end portions of the reference numerals 2 and 33.

As shown in FIG. 3A, the outer end of one magnetic alloy reed 32 of the reed switch 30 has the magnet 20 when the magnet 20 is not oscillating (solid line). It is formed so as to be located on an extended line of a straight line connecting the N and S poles by suction with and is electrically coupled to one end of the non-magnetic metal connecting conductor 36 such as copper or brass. The other end of the connection conductor 36 is electrically connected to a circuit pattern (not shown) of the substrate 28 and the like.
It is also mechanically fixed. In addition, when an earthquake occurs,
The fixed part K and the reed switch 30 swing first and the magnet 20
Is in a stopped state, but for convenience of explanation, the magnet 20 will be described as swaying.

The magnetic flux of the magnet 20 is too strong, or the magnet 2
0 is too light, or magnet 20 and magnetic alloy lead 32
If the distance L is too small, the magnet 20 does not separate from the magnetic alloy reed 32 and the contact portions 34 and 35 continue to be turned on and shake even if shaking exceeding a set value occurs due to an earthquake or the like. Can not be detected. On the contrary, magnet 2
0 magnetic flux is too weak, magnet 20 is too heavy,
Alternatively, if the distance L is too large, the magnet 20 sways just by a sway that does not reach the set value, and is instantly separated from the magnetic alloy lead 32, and the contact portions 34 and 35 are turned off to make an erroneous detection. Become.

Therefore, the strength and weight of the magnetic flux of the magnet 20
The weight of the weight 22 and the distance L are set to the shortest distance La when the building does not shake due to the passage of a vehicle that occurs in normal life and the set shaking does not occur even in the event of an earthquake, typhoon, accident, or the like. Although the suction state is maintained and continued, when the vibration exceeds the set value, the distance L between the magnet 20 and the magnetic alloy lead 32 instantly becomes the set value Lb (> La) or more and the contact portions 34 and 35 are turned off. Adjusted at design time to The designed one is further finely adjusted so that the optimum distance La is obtained by moving the adjusting screw 21 up and down.

Next, the operation of FIGS. 1 and 2 will be described with reference to FIG. First, the initial setting state will be described.
The magnetic attraction force M acting between the magnetic alloy reed 32 of the reed switch 30 and the magnet 20 and the distance L between the two have a relationship as shown in FIG. FIG.
In (a) and (c), the suspension member 2 when the magnet 20 is not swinging due to the attraction between the magnetic alloy lead 32 and the magnet 20.
The direction of 4 is represented by the z-axis, and the direction of shaking is represented by the x and y planes perpendicular to the z-axis. In FIG. 3, the weight 22 is not shown for convenience of description.

Of these, La in FIG. 3B represents the shortest distance, and Lc represents the distance at which the suction force M becomes almost 0. For convenience of explanation, the distance L is set from La to the set value L.
Reed switch 30 between b (La <Lb <Lc)
Of the magnet 20 and the boundary line with the OFF operation region outside thereof is J (circle centered on the z axis and having a radius r), the swing angle (deflection angle) θ of the magnet 20 corresponding to this boundary line J. And the boundary line J are as shown in FIGS. 3 (a) and 3 (c). Here, if the length from the fixed point K to the tip of the magnet 20 is represented by P, the radius r of the boundary line J is r = P × sin θ.

(B) The building is not shaken, or even when shaken, the attracted state between the magnetic alloy lead 32 and the magnet 20 continues during normal times when the shake does not reach the set value (for example, shake of seismic intensity 2). Therefore, the distance L maintains the shortest distance La, and the contact portions 34 and 35 of the reed switch 30 continue to be turned on.

(B) In an emergency when the building shakes more than a preset shake (for example, a shake corresponding to a seismic intensity of 2 or more) due to an earthquake, a typhoon, an accident, etc., the magnet 20 is moved by the static inertia force of the magnet 20 to cause the magnetic alloy lead 32 to move. The force for separating the magnetic alloy lead 3 from the magnetic alloy lead 3 becomes larger than the force for keeping the shortest distance La by the attraction force M of the magnet 20.
The distance L becomes larger than the shortest distance La apart from 2.

When the distance L starts to become larger than the shortest distance La in this way, the attraction force M rapidly decreases accordingly, which helps the magnet 20 to separate from the magnetic alloy reed 32, so that the building shakes. When it becomes equal to or more than the set value, the distance L instantly becomes equal to or more than the set value Lb (> La), and the contact portions 34 and 35 of the reed switch 30 are turned off.

(D) The vibration of the building is reduced and the magnet 20
When the distance L becomes less than or equal to the set value Lb (in the ON operation region within the swing angle θ), the contact portions 34 and 35 of the reed switch 30 are turned on.

Further, the swing of the magnet 20 becomes small, and the force for keeping the distance L at the shortest distance La by the attraction force M of the magnet 20 is due to the motion inertial force of the magnet 20.
When 0 becomes larger than the force for separating from the magnetic alloy lead 32, they are attracted to each other and the distance L between them is automatically returned to the initial state in which the shortest distance La is maintained. In other words, there is no need to perform a returning operation to restore the initial state.

In the embodiment shown in FIG. 1, the reed switch 3 is used.
Although 0 is fixed vertically, the present invention is not limited to this. The magnetic alloy lead 32 closer to the magnet 20 is attached to the magnet 20.
If the reed switch 30 is located directly below the reed switch 30, as shown in FIG.
As shown in FIG. 5, the reed switch 30 may be fixed substantially horizontally.

In the above embodiment, in the initial setting state,
Although the suspension member 24, the N and S poles of the magnet 20 and the magnetic alloy lead 32 are arranged on the same vertical line, the present invention is not limited to this. For example, as shown in FIG. 6, since the plate surface of the substrate 28 is attached so as to be inclined at a slight angle α with respect to the vertical surface of the building, the magnet 20 is magnetized by the magnetic attraction force of the magnet 20 in the initial setting state. 20
In the case where the suspension member 24, the N and S poles of the magnet 20 and the magnetic alloy lead 32 are not positioned on the same vertical line, the angle α is inclined from the stable position (the position indicated by the chain double-dashed line) due to gravity alone. Also operates similarly to the case of FIG.

In the above embodiment, the magnet 20 is formed of a cylindrical permanent magnet, but the present invention is not limited to this. In the above-described embodiment, the case where the reed switch 30 is formed of the normally open type magnetic alloy reeds 32 and 33 has been described. However, the present invention is not limited to this, and the normal switch is turned on when an external magnetic field is not applied. The present invention can also be applied to the case where the closed magnetic alloy leads 32 and 33 are used.

Next, an example in which the seismic sensor 11 configured as described above is used as an emergency notification device will be described with reference to FIG. The emergency notification device includes the earthquake sensor 11 and the control circuit 37. The control circuit 37 includes a battery 10, a lamp,
It is composed of an informing means 12 such as a buzzer or the like, sound, etc., a first switching element 14, a timer circuit 50, and a detecting means 42.

The detection means 42 is connected to the detection resistor 44 via the reed switch 30, and the inverter 4 for inverting and outputting the detection voltage level of the detection resistor 44.
It consists of six.

The timer circuit 50 includes the detecting means 4
A second switching element 52 which is turned on by the detection output of 2;
A capacitor 54 that charges when the second switching element 52 is turned on, a discharge resistor 56 that is coupled in parallel to the capacitor 54, and a charging voltage of the capacitor 54 are input, and an output is controlled to the first switching element 14. It is composed of a Schmitt trigger circuit 58 which serves as a signal.

The second switching element 52 is an npn
Type transistor with a resistor 6 at its base
The output side of the inverter 46 is coupled via 0. The output side of the Schmitt trigger circuit 58 is coupled to the base of the transistor 16 of the first switching element 14 via the resistor 62. The first switching element 14 includes two pnp type transistors 16,
18 are connected by Darlington connection.

The device shown in FIG. 7 is small (for example, 20 × 3).
It is housed and fixed in a housing of 0x40 mm), and a plurality of this housing is fixed by locking, sticking, etc. along the escape route of the building's dwell, etc. The notifying means 12 is configured to illuminate the exit or corridor of the building or to notify by sound.

Next, the operation of FIG. 7 will be described. (B) The contact means 34 and 35 of the reed switch 30 continue to be turned on during normal times when the building is not shaken or the shake does not reach the set value (for example, shake of seismic intensity 2) even when shaken. The detection level of the resistor 44 of 42 becomes H level, the output side of the inverter 46 becomes L level, the second switching element 52 is turned off, and the capacitor 54 is
Without charging, the Schmitt trigger circuit 58 does not turn on the first switching element 14.

(B) In the event of an emergency in which the building swayed by a preset shaking (for example, a shaking corresponding to a seismic intensity of 2 or more) due to an earthquake, typhoon, accident, etc., the contact portion 34 of the reed switch 30,
35 is turned off, the detection level of the resistor 44 of the detection means 42 changes to the L level, the output side of the inverter 46 becomes the H level, and the detection output appears. Therefore, in the timer circuit 50, the second switching element 52 is turned on and the capacitor 52 is charged. When the charging voltage of the capacitor 52 exceeds the positive trigger voltage of the Schmitt trigger circuit 58, the first switching element 14 is turned on, the lamp of the notification means 12 such as light or sound is turned on, or the buzzer sounds.

(C) The notification means 12 continues at least for the time set by the time constant circuit of the timer circuit 50 (for example, 60 seconds) even if the shaking immediately subsides. That is, even when the swing becomes small and the contact portions 34 and 35 of the reed switch 30 are turned on, the detection output of the detection means 42 is lost and the second switching element 52 is turned off, the resistor 56 and the capacitor 54 of the circuit of the timer 50 are used. Since the voltage of the capacitor 54 is higher than the negative trigger voltage of the Schmitt trigger circuit 58 for the time set by the time constant circuit (for example, 60 seconds), the first switching element 14 continues to be turned on and the notification means Keep 12 working.

(D) When the set time of the timer circuit 50 elapses from the time when the shaking of the building is reduced and the second switching element 52 is turned off, the Schmitt trigger circuit 58.
Of the output, the first switching element 14 is turned off, and the operation of the notification means 12 is stopped.

When the swing of the magnet 20 is reduced, the magnetic alloy lead 32 and the magnet 20 are attracted to each other, and the distance L between them is automatically returned to the initial state in which the shortest distance La is maintained. In other words, there is no need to perform a returning operation to restore the initial state.

Next, FIGS. 8 to 12 show an example in which the seismic sensor 11 of the present invention is applied to a known stationary lamp 15. First, the stationary lamp 15 will be described. In the stationary lamp 15, the power switch is removed from a known flashlight, and instead, an insulating protrusion 53 fixedly provided from an opening 49 formed in a side portion of the outer tubular body 39. The battery 10a and the battery 10b are electrically separated by inserting the battery into the battery pack and setting it. And when it is used as a standing light 15,
When the stationary lamp 15 is pulled out from the insulating protrusion 53 of the support frame 51, the batteries 10a and 10b come into contact with each other by the coil spring 47 and the lamp 41 is turned on. When it is not used, the lamp 41 cannot be extinguished unless the stationary lamp 15 is inserted into the insulating protrusion 53 of the support frame 51 without fail.

According to the present invention, the minus electrode 55 is attached to the upper surface of the insulating protrusion 53 and the plus electrode 59 is attached to the lower surface of the stationary lamp 15 as described above.
1, an earthquake sensor 11 of the present invention, a control circuit 37,
The notification means 12 for light, sound, etc. is housed, and the minus electrode 55, the plus electrode 59 and the control circuit 37 are connected by a lead wire.

More specifically, as shown in FIG. 9, the insulating protrusion 53 is formed such that a two-pronged insulator integrally protrudes from the middle of the support frame 51, and the minus electrode 5 on the upper surface.
5, the protrusion 57 is formed so as to surely contact the minus side of the battery 10a, and the tip of the minus electrode 55 is slightly embedded and fixed in the insulating protrusion 53 so as not to turn over when the stationary lamp 15 is taken in and out. . The tip of the plus electrode 59 is also the same. Further, the tip of the insulating protrusion 53 is sharpened so as to smoothly take in and out the stationary lamp 15.

These minus electrode 55 and plus electrode 5
9, lead wires are connected to the inside of the support frame 51, and the lead wire on the minus electrode 55 side is shown in FIG.
As shown in FIG. 3, the lead wire connected to the ground of the control circuit 37 and having the plus electrode 59 side has a notification means 12 such as light and sound, the second switching element 52, and the reed switch 30.
Connected to.

The other circuit configuration of FIG. 10 is the same as that of FIG. However, notification means 1 by light, sound, etc.
2, the rating is 220mA, 1.1V, lamp 41
Is rated at 750 mA and 2.5 V.

In the above structure, the stationary lamp 15
In the state where the reed switch 30 of the seismic sensor 11 is turned on while being inserted into the insulating protrusion 53 of the support frame 51, the battery 10a, the lamp 41, the battery 10b,
Although a closed circuit of the plus electrode 59, the reed switch 30, the resistor 44, and the minus electrode 55 is formed, the passing current is extremely small as in the normal state of FIG. 7, and the lamp 41 does not light.

Here, when the reed switch 30 of the earthquake sensor 11 is turned off due to an earthquake or the like, the timer circuit 50 operates for a certain period of time and the first switching element 14 is activated as described above.
Is turned on, and a current flows through the notification means 12 by light, sound or the like. Here, only the notification means 12 by light or sound having a low rated voltage is turned on, and the lamp 41 is not turned on.
The light of the notification means 12 is emitted from the transparent plate 61 to the outside.
When the set time of the timer circuit 50 has passed, the notification means 12
Stops. When the stationary lamp 15 is pulled out from the insulating protrusion 53 of the support frame 51, the coil spring 47 causes the batteries 10a and 1
Since 0b is in contact, it operates as a normal standing light 15.

In the example shown in FIGS. 8 to 10, the notification means 12 for emitting light and sound and the lamp 41 are provided.
1 and FIG. 12, the lamp 12 is omitted and the lamp 41 is omitted.
Is also operated as the notification means 12 by light, sound, or the like. In FIG. 11 and FIG. 12, in the control circuit 37, the first switching element 14 is directly connected to the power source side except for the notification means 12 by light, sound, etc., and the other circuit configuration is the same as in FIG. 7. is there. In addition, a reflecting mirror 63 that reflects the light of the lamp 41 to the front surface is provided above the support frame 51.

In the above structure, the stationary lamp 15
However, when the reed switch 30 of the seismic sensor 11 is in a state of being inserted into the insulating protrusion 53 of the support frame 51, the passing current is extremely small as in FIG. 10, and the lamp 41 is turned on. There is no.

Here, due to an earthquake or the like, the reed switch 30 of the earthquake sensor 11 is turned off and the first switching element 14 is turned on for the set time of the timer circuit 50 to turn on the lamp 4.
A current flows through 1. Here, since the lamp 12 is not provided, the entire current is applied to the lamp 41 and the lamp 41 is turned on.
The light from the lamp 41 is reflected by the reflecting mirror 63 to illuminate the front. If the set time of the timer circuit 50 has passed, the lamp 4
1 goes out. Insulation projection 53 of support frame 51
When the battery 10a is removed from the battery pack, the coil spring 47 causes the batteries 10a and 10b to come into contact with each other, so that the battery 10 operates as a normal standby light 15.

[0046]

【The invention's effect】

(1) According to the present invention, the magnet 20 is oscillatably suspended by the suspension member 24, and the reed switch 30 is mounted immediately below the magnet 20 with a predetermined distance. When the magnet 20 is attracted and does not operate at a seismic intensity below a predetermined level, and the magnet 20 swings at a seismic intensity above a predetermined level, the magnet 20 suddenly separates and the contact portion is turned off. Therefore, there is no malfunction due to vibrations that occur during normal life, and it reliably operates in an emergency when the building shakes more than the preset value due to an earthquake, typhoon, accident, or the like.

(2) When the vibration of the magnet 20 is reduced, the magnet 20 and the magnetic alloy lead 32 are attracted to each other, and the magnet 20 and the magnetic alloy lead 32 are automatically returned to each other without performing a return operation for resetting the initial state. .

(3) By incorporating the seismic sensor 11 in the emergency notification device, when the shaking exceeding the set value occurs, the seismic sensor 11 operates without fail to activate the notifying means 12 by the set time, light, sound, and the like. It is possible to provide an emergency notification device that automatically stops the operation and returns to the initial state after a time required for evacuation after the operation has elapsed, and it is possible to provide the emergency notification device at a low cost, which is extremely practical.

(4) The magnet 20 is formed of a columnar permanent magnet, and the lower end portion of the suspending member 24 suspended from the fixed portion K is coupled to the center portion of the upper end of the magnet 20 to reed switch 30. The on / off action of does not depend on the shaking direction of the building, and can respond to shaking in all directions. Therefore, it is possible to detect shaking in all directions in an emergency.

(5) When the weight 22 is fixed to the magnet 20, the static inertial force due to gravity acting on the magnet 20 can be increased without changing the weight of the magnet 20 itself. Therefore, the weight of the magnet 20 itself and the range of the magnitude of the magnetic flux are increased, and the degree of freedom in design can be increased. At this time, the weight 22 fixed to the magnet 20 is provided on the outer peripheral portion of the magnet 20 so that the center of gravity of the weight 22 is on the extension line of the suspending member 24 for suspending the magnet 20, so that the shaking of the building becomes equal to or larger than the set value. When the static inertial force acting on the magnet 20 in such an emergency depends only on the magnitude of the shaking of the building and does not depend on the direction of the shaking,
The on / off operation of the reed switch 30 does not depend on the shaking direction of the building, and can respond to shaking in all directions.

(6) The reed switch 30 is a normally open type, and the detection means 42 is a detection resistor 44 connected in parallel to the battery 10 via the reed switch 30 and the detection voltage level of the resistance 44 is inverted. Second switching element 52 which is configured by an inverter 46 that outputs the output, and turns on the timer circuit 50 by the detection output of the detection means 42.
When the second switching element 52 is turned on, a capacitor 54 into which a charging current from the battery 10 flows, a discharging resistor 56 coupled in parallel with the capacitor 54, and a charging voltage of the capacitor 54 are input and an output is generated. When the Schmitt trigger circuit 58 is used as a control signal to the first switching element 14, the device configuration can be further simplified and reliable operation can be performed.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an earthquake sensor 11 according to the present invention.

FIG. 2 is a front view showing another example of the suspension member 24.

3A and 3B are views for explaining the operation of the present invention, in which FIG. 3A is an explanatory view showing the positional relationship between the magnet 20 and the reed switch 30 when shaken, and FIG. 3B is an attraction force M of the magnet 20 and the reed switch. 30 is a characteristic diagram showing a relationship between the distance L and the distance L. FIG. 10C is an explanatory diagram showing an ON operation region of the reed switch 30.

FIG. 4 is an explanatory view showing another embodiment of the present invention in which the reed switch 30 is attached while being inclined.

FIG. 5 is an explanatory view showing still another embodiment of the present invention in which the reed switch 30 is mounted horizontally.

FIG. 6 is an explanatory diagram showing a case where the suspension sensor 24, the N and S poles of the magnet 20 and the magnetic alloy lead 32 are not located on the same vertical line because the seismic sensor 11 is attached in an inclined state in the initial state. is there.

FIG. 7 is a circuit configuration diagram showing an embodiment of an emergency notification device incorporating the earthquake sensor 11 according to the present invention.

FIG. 8 is a cross-sectional view showing an embodiment of an emergency notification device in which the seismic sensor 11 is built in the standing light 15.

9 is a detailed perspective view of the insulating protrusion 53 in FIG.

10 is a circuit configuration diagram showing an embodiment of an emergency notification device incorporating the earthquake sensor 11 in FIG.

FIG. 11 is a cross-sectional view of essential parts showing another embodiment of the emergency notification device in which the seismic sensor 11 is built in the standing light 15.

12 is a circuit configuration diagram showing an embodiment of an emergency notification device incorporating the earthquake sensor 11 in FIG.

[Explanation of symbols]

10, 10a, 10b ... Battery, 11 ... Earthquake sensor, 12
... notification means by light, sound, etc., 14 ... First switching element, 15 ... Stand-by light, 16, 18 ... Pnp type transistor, 20 ... Magnet, 21 ... Adjusting screw, 22 ... Weight, 23 ... Housing, 24 ... Suspension Member, 26 ... Support rod, 28 ...
Substrate, 30 ... Reed switch, 32, 33 ... Magnetic alloy reed, 34, 35 ... Contact part, 36 ... Connection conductor, 37 ... Control circuit, 39 ... Outer cylinder, 40 ... Reflector, 41 ... Lamp,
42 ... Detection means, 43 ... Lens, 44 ... Detection resistor, 46
... Inverter, 47 ... Coil spring, 48 ... Cover, 49
... Aperture, 50 ... Timer circuit, 51 ... Support frame, 52 ...
Second switching element, 53 ... Insulation protrusion, 54 ... Capacitor, 55 ... Minus electrode, 56 ... Discharge resistor, 57
... protrusions, 58 ... Schmitt trigger circuit, 59 ... plus electrode, 60, 62 ... resistance, 61 ... translucent plate, 63 ... reflecting mirror, J ... boundary line that separates ON operation region and OFF operation region,
K ... Fixed part, L, La, Lb, Lc, P ... Distance, M ... Suction force, θ ... Swing angle.

Claims (7)

[Claims] 1. A magnet 20 is swingably suspended from a fixed portion K by a suspending member 24, and a reed switch 30 is attached directly below the magnet 20 with a predetermined distance. When the magnet 20 has a seismic intensity below a predetermined level. , The reed switch 30
Of the magnetic alloy reed 32, and when the magnet 20 swings with a seismic intensity equal to or higher than a predetermined value,
An earthquake sensor characterized in that the contact portions 34, 35 are opened and closed. 2. The fixing part K comprises an adjusting screw 2 which is adjustable up and down.
The seismic sensor according to claim 1, wherein the seismic sensor is composed of 1 and the magnet 20 is suspended from the adjusting screw 21 so as to be swingable. 3. The seismic sensor according to claim 1, wherein the suspension member 24 is made of a thread or a chain. 4. The magnet 20 comprises a cylindrical permanent magnet having magnetic poles arranged in the vertical direction, and a non-magnetic weight 22 is attached to the outer periphery of the magnet 20.
Seismic sensor described. 5. When the magnet 20 has a seismic intensity below a predetermined level, the magnet 20 attracts each other with the magnetic alloy reed 32 of the reed switch 30, and when the magnet 20 swings at a seismic intensity above a predetermined level, the magnets 20 separate from each other, whereby the contact portions 34, 35. Earthquake sensor 11 that opens and closes
And a control circuit 37 that is turned on for a set time by the operation output signal of the seismic sensor 11, and a notification unit 12 that emits light or sound that operates during the set time of the control circuit 37. Notification device. 6. The battery 10 and the lamp 41 are housed in an outer cylinder 39, and when the battery 10 and the lamp 41 are mounted on the support frame 51, the insulating projection 53 separates the lighting circuit of the lamp 41 from the middle thereof.
In the stationary lamp 15 in which the lighting circuit is connected by removing the outer tubular body 39 from the support frame 51,
When the magnet 20 has a seismic intensity below a predetermined level, the reed switch 3
The seismic sensor 11 that opens and closes the contact portions 34 and 35 by attracting each other with the magnetic alloy lead 32 of 0 and separating when the magnet 20 swings with a seismic intensity of more than a predetermined value, and an operation output signal of the seismic sensor 11. The control circuit 37 that is turned on for a set time is stored in the insulating protrusion 53 and the battery 1
An emergency notification device characterized in that a minus electrode 55 and a plus electrode 59 are provided for supplying electric power to the seismic sensor 11 and the control circuit 37 by bringing them into contact with and separate from 0. 7. The control circuit 37 is connected with an informing means 12 such as light or sound that operates during a set time.
Emergency notification device described.