JPH11190657A - Seismoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismoscope that can provide output according to to seismic intensity or vibration in multiple stages while being one seismoscope. SOLUTION: A movable contact member 6 is displaced through bearings 9 by the movement of a spherical body 5 on a bottom face 1a in a case 1 when external vibration is on a first level. The movable contact member 6 is first brought into contact with a fixed contact member 7 to obtain first output from a first output terminal 10. The movable contact member 6 is brought into contact also with a fixed contact member 8 through the bearings 9 by the movement of the spherical body 5 when external vibration is on a second level larger than the first level, so as to obtain second output from a second output terminal 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic sensor for detecting an earthquake or vibration.

[0002]

2. Description of the Related Art In a conventional seismic device, a sphere is provided on an inner bottom surface of a case so as to be movable by external vibration. When the sphere comes to a predetermined position, a contact mechanism is closed, for example, to output a seismic signal. In some cases, this is set in, for example, a combustion device, and the combustion operation of the combustion device is stopped using the seismic signal. For example, there is one in which the setting of the closing operation of the contact mechanism can be adjusted to an arbitrary seismic intensity.

[0003]

In the above-mentioned seismic sensor, the output of the seismic signal is one, so that only one seismic intensity can be set when the seismic signal is output. is there. Therefore, with one seismic sensor, when the seismic intensity is low, for example, it notifies the combustion equipment that it is in a warning stage, and outputs a seismic signal for causing the combustion equipment to perform a required operation.
At high seismic intensity, it cannot be used to notify the combustion equipment of danger and output a seismic signal to stop the combustion operation.

[0004] Therefore, when the above-described use is performed using a conventional seismic sensor, two seismic sensors are set in the combustion equipment, and one seismic sensor outputs a seismic signal when the seismic intensity is small. It is necessary to set so that the seismic sensor outputs the seismic signal when the seismic intensity is large.

[0005] In short, conventional seismic sensors cannot process multi-level seismic intensity or vibration by itself, so that a plurality of seismic devices are required for such multi-level seismic intensity or vibration. In addition to the necessity and cost increase, there is a problem that a large space for accommodating it in a device such as a combustion device is required, and furthermore, wiring of the device becomes complicated.

Accordingly, the present invention provides a seismic sensor which can obtain an output for each of multiple seismic intensities or vibrations while being a single seismic sensor.

[0007]

According to the present invention, there is provided a seismic sensor according to the present invention, wherein a moving body which moves in a case to a position corresponding to the magnitude of external vibration, The above-mentioned problem has been solved by providing an output mechanism for obtaining the above-mentioned output.

[0008]

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

(Embodiment 1) A seismic sensor according to Embodiment 1 will be described with reference to FIGS.

The seismic sensor according to the first embodiment includes a case 1,
A cover 2, a guide plate 3, a support 4, a sphere 5 as an example of a moving body, a movable contact member 6, a first and a second
Fixed contact members 7, 8; a plurality of bearings 9;
And second output terminals 10 and 11. The movable contact member 6 and the first and second fixed contact members 7 and 8 constitute a contact mechanism, and the bearing 9 constitutes an operation mechanism.

The case 1 is made of an insulating material and has an opening at the top and a bottom at the bottom in the figure, and an inner bottom surface 1a is an ascending slope with its center 1b being the lowest point.

The cover 2 is attached to an opening at one end of the case 1. The end of the movable contact member 6 and the output terminal 1
Insertion holes 2a, 2b, 2 for the respective ends of 0, 11
c.

The guide plate 3 is provided at the side wall step 1c in the case 1.
It has a plurality of openings 3a for bearing insertion along a predetermined circumferential line.

The support member 4 supports the movable contact member 6 and the fixed contact members 7 and 8, respectively.
It is inserted and fixed in the center of.

The sphere 5, which is an example of the moving body, is made of resin or metal, and is disposed on the bottom surface 1a in the case 1. The sphere 5 has the lowest rising gradient when there is no external vibration or when the external vibration is lower than a predetermined value. It is stationary at the center 1b, which is a point, or moves only within a predetermined range from the center, but when the level of external vibration due to an earthquake or the like reaches the first level, it moves up the bottom surface 1a of the case 1 Then, the bearing 9 is pushed upward by a predetermined distance, and at the same time, the movable contact member 6 is also pushed upward. Then,
The movable contact member 6 comes into contact with the first fixed contact member 7 near the fixed contact members 7 and 8 first. When the level of the external vibration reaches the second level which is larger than the first level, the sphere 5 further moves up the bottom surface 1a of the case 1 to push the bearing 9 further upward. . As a result, the movable contact member 6 is further pushed upward, so that the movable contact member 6 not only comes into contact with the first fixed contact member 7 but also the second movable contact member 6 located at a position farther from the first movable contact member 7.
Also comes into contact with the fixed contact member 8.

The first output terminal 10 is in contact with the first fixed contact member 7, and the potential changes when the movable contact member 6 and the first fixed contact member 7 come into contact (switch the contact state). The change in the potential can be output as a seismic signal. The second output terminal 11 is in contact with the second fixed contact member 8 (switching of the contact state), and the potential changes due to the contact between the movable contact member 6 and the second fixed contact member 8. Changes in potential can be output as seismic signals.

The movable contact member 6 and the fixed contact members 7 and 8 are both supported at their central portions by the support 4. As shown in FIG. 2, the movable contact member 6 has an annular portion 6a fixed to the support body 4, a plurality of contact legs 6b extending radially from the position of the annular portion 6a, and a common terminal. (In FIG. 1, this terminal leg 6c is denoted by a common terminal 6c in FIG. 1).

In the seismic device having the above structure, when external vibration occurs, the sphere 5 located at the center 1b of the bottom surface 1a of the case 1 moves up and down the bottom surface 1a. When the magnitude of the external vibration reaches the first level, the sphere 5
Comes into contact with the bearing 9 facing the opening 3a of the guide plate 3, and presses the contact leg 6b of the movable contact member 6 upward through the bearing 9. As a result, the contact legs 6
b contacts the first fixed contact member 7, whereby the first fixed contact member 7 contacts the first output terminal 10, and the contact state is switched.

Next, when the magnitude of the external vibration reaches a second level larger than the first level, the sphere 5 further presses the contact leg 6b of the movable contact member 6 upward through the bearing 9. Become. As a result, the contact leg 6b also contacts the second movable contact member 8, whereby the second fixed contact member 8 also contacts the second output terminal 11, and the contact state is switched.

Therefore, the contact leg 6b of the movable contact member 6 is moved by the movement of the sphere 5 so that the first fixed contact member 7 comes into contact with the first output terminal 10 at the first level of external vibration. In the state of outputting the seismic signal and the state of outputting the second seismic signal when the fixed contact members 7 and 8 come into contact with the output terminals 10 and 11 respectively in the second level of external vibration, 1 Although it is a single seismic sensor, multiple outputs can be obtained according to the seismic intensity.

In the first embodiment, the movable contact member 6 is moved via the bearing 9 as an operating mechanism. However, the bearing 9 is omitted, and the contact legs 6b of the movable contact member 6 are guided. The contact leg 6b of the movable contact member 6 may be directly driven by the sphere 5 while facing the insertion hole 3a of the plate 3.

In the first embodiment, the fixed contact members 7, 8 are the first and second fixed contact members.
More movable contact members may be used.

(Second Embodiment) Referring to FIGS. 3 and 4, a description will be given of a vibration sensor according to a second embodiment. The vibration sensor according to the second embodiment includes a case 21 and a cover 22.
, A sphere 23, and first and second contact members 24, 25
And first and second output terminals 26 and 27. The first and second contact members 24 and 25 constitute a contact mechanism.

The case 21 is made of a conductive material having a shape in which one end, which is the upper side in the figure, is open and the other end, which is the lower side in the figure, is bottomed.
"a" is a slope having an ascending gradient with its center 21b as the lowest point. This slope gradient is a first rising gradient within a predetermined range Z1 from the center thereof, and is a second rising gradient steeper than the first rising gradient in a second predetermined range Z2 exceeding the range.

The cover 22 is made of a conductive material, is attached to an opening on one end side of the case 21, and has a through hole 22 for inserting each of the output terminals 26 and 27.
a. An insulating resin 28 is provided in this insertion hole.

The first output terminal 26 is connected to the first contact member 2
The second output terminal 27 is for supporting the second contact member 25 and extracting the second contact output.

As shown in the plan view of FIG. 4A, the first contact member 24 has an annular portion 24a fixed to the lower end projection 26a of the first output terminal 26, and a radial portion extending from the annular portion 24a. It is composed of a plurality of contact legs 24b extending radially and obliquely downward in FIG. 3, that is, umbrella-shaped.

As shown in the plan view of FIG. 4 (b), the second contact member 25 has an annular portion 25a fixed to the second output terminal 27, and radially radiate from the annular portion 25a in FIG. And a plurality of contact legs 25b extending obliquely downward, that is, in an umbrella shape.

In the seismic sensor having the above structure, when external vibration occurs, the sphere 23 located at the center 21b of the bottom surface 21a of the case 21 moves up and down the bottom surface 21a.
Then, when the magnitude of the external vibration reaches the first level, the sphere 23 comes into contact with the contact leg 24b of the first contact member 24, whereby the sphere 23 is in contact with the first contact member 24 via the first contact member 24. 1 is electrically connected to the output terminal 26.

Here, the case 21, the cover 22, and the sphere 2
3 are electrically conductive, the common terminal (not shown) of the cover 22 and the first output terminal 26 are electrically connected to each other, and the first output terminal 26 corresponding to the first level of external vibration.
Is obtained.

Next, when the magnitude of the external vibration reaches the second level, the sphere 23 further moves on the bottom surface 21a of the case 21 and comes into contact with the contact leg 25b of the second contact member 25. , The sphere 23 is the second movable contact member 25
Through the second output terminal 27.

As a result, the common terminal (not shown) of the cover 22 is electrically connected to the second output terminal 27, so that a second output corresponding to the second level of external vibration is obtained. .

Therefore, in the seismic sensor according to the second embodiment, a plurality of outputs can be obtained in accordance with the seismic intensity while being a single seismic sensor.

In the second embodiment, the contact members 24 and 25 are the first and second contact members.
More contact members may be used.

(Embodiment 3) Referring to FIG. 5, the seismic device according to the third embodiment will be described. The seismic device according to the third embodiment includes a case 31, a cover 32, a sphere 33, ,
It includes first and second contact members 34 and 35, a first output terminal 36, and an operation mechanism 37. The first and second contact members 34 and 35 constitute a contact mechanism. The end of the second contact member 35 constitutes a second output terminal 35a as described later.

The case 31 includes a conductive case 31a and an insulating case 31b. The conductive case 31a has an opening at the upper side, and an inner bottom surface 31a1 has an opening 31a at the center thereof.
It has an uphill slope having two. The insulating case 31b is attached to the bottom surface 31a1 of the conductive case 31a.

The cover 32 is made of a conductive material, is mounted on the upper side of the conductive case 31a, and has an insertion hole 32a for inserting the first output terminal 36. An insulating resin 38 is provided in the insertion hole 32a. Note that the first output terminal 36 supports the first contact member 34 at the lower end side, and the conductive case 31a
The upper end is exposed outside.

The first contact member 34 has the same configuration as the contact member described in the second embodiment, and is similarly attached to the first output terminal 36.

The right end of the second contact member 35 in the figure is fixedly supported by the insulating case 31b, and the tip is extended to form a second output terminal 35a. Has a spring property to come into contact with the outer bottom surface 31a3 of the conductive case 31a when a load for pressing downward is not applied.

The operating mechanism 37 is fixed on the second contact member 35 in the insulating case 31b, and is opened from the bottom opening 31a2 of the conductive case 31a.
a, and when the sphere 33 is located at the position shown in FIG. 5, that is, at the opening 31a2 which is the center of the conductive case 31a, the sphere 33 is pushed downward by its own weight as a load, The other end 35b of the contact member 35 is pressed downward. The second contact member 35 is an operation mechanism 37
The other end side is brought into a non-contact state with the conductive case 31a due to the downward load pressing of the sphere 33 by its own weight via the. When the sphere 33 moves from above the opening 31a2, no load is applied to the second contact member 35, and the other end 35b of the second contact member 35 contacts the outer bottom surface 31a3 of the conductive case 31a. State.

In the above configuration, when external vibration is generated, the opening 3 at the center of the bottom surface 31a1 of the conductive case 31a is formed.
The sphere 33 located at 1a2 moves on the bottom surface 31a1. When the magnitude of the external vibration reaches the first level, the sphere 33 contacts the first contact member 34, whereby the sphere 33 is connected to the first output terminal via the first contact member 34. 36 will be electrically conducted.

Here, the conductive case 31a and the cover 32
Since the first output terminal 36 and the sphere 33 are both electrically conductive, the first output terminal 36 is electrically connected to a common terminal (not shown) of the cover 32, and the first output terminal 36 corresponds to the first level of external vibration. Is obtained.

Next, when the magnitude of the external vibration reaches the second level which is larger than the first level, the sphere 33 moves further on the bottom surface 31a1 of the conductive case 31a. Is released, whereby the other end 35b of the second contact member 35 contacts the outer bottom surface 31a3 of the conductive case 31a, whereby the common terminal of the cover 32 is connected to the cover 32, the conductive case. 31a, via the other end 35b of the second contact member 35,
One end of the second contact member 35 is electrically connected to the second contact member 35 as a second output terminal 35a. as a result,
A second output corresponding to the second level of external vibration is obtained.

Therefore, in the seismic device according to the third embodiment, a plurality of outputs can be obtained in accordance with the seismic intensity while being one seismic device.

In the third embodiment, the first and second contact members are used. However, a larger number of contact members may be used.

(Embodiment 4) Referring to FIGS. 6 and 7, a description will be given of a shock absorber according to Embodiment 4 of the present invention. Case 42, cover 43, sphere 44, first and second
, And an operation mechanism 47. The first and second contact members 45 and 46 constitute a contact mechanism.

The conductive case 41 has an opening 41b at the center of the inner bottom surface 41a thereof, and a slope having a first ascending slope within a predetermined distance from the opening 41b, and a second ascending slope which is steeper than the first ascending slope. It has a slope structure with a rising slope.

The cover 43 is made of a conductive material, is connected to leads (not shown), and is attached to the opening of the conductive case 41.

The first contact member 45 is fixed to the bottom of the insulating case 42 at the right end in the figure, and the right end of the first contact member 45 is drawn out of the insulating case 42 to form a first output terminal 45a.
In the figure, the left end portion extends rightward to form a contact portion 45b.
Is composed. The second contact member 46 is an insulating case 4
2 is fixed to the bottom of FIG. 2 and the tip of the left end is taken out of the insulating case to form a second output terminal 46a.
In the figure, the right end extends to the left and the contact portion 46b
Is composed. The two contact members 45 and 46 are arranged in a relationship as shown in FIG.
The first distance between the contact portion 45b of the second contact member and the outer bottom surface 41c of the conductive case 41, and the contact portion 4 of the second contact member 46
The first distance is smaller than the second distance between the second base 6b and the outer bottom surface 41c of the conductive case 41.
An operation mechanism 47 is fixed on both of the contact members 45 and 46 in common.

The operation mechanism 47 faces the inside of the conductive case 41 through the opening 41b of the inner bottom surface 41a of the conductive case 41. When the sphere 44 is located on the operation mechanism 47, the operation mechanism 47 The own weight is applied to the two contact members 45 and 46 via the operating mechanism 47, whereby the two contact members 45 and 46 are pressed downward, and the contact portions 45b and 46b of the two contact members 45 and 46 respectively become conductive case. 41 is kept away from the outer bottom surface 41c while maintaining the distance relationship.

When the sphere 44 is not located on the operation mechanism 47, first, when the sphere 44 is on the first rising slope of the inner bottom surface 41a of the conductive case 41, both contact members 45 are used. , 46 respectively rise toward the outer bottom surface 41c of the conductive case 41 due to their own spring characteristics, but the contact portion 45b of the first contact member 45 closer to the bottom surface 41c. Contacts its bottom surface 41c.

Next, when the sphere 44 is on the second rising slope beyond the first rising slope on the inner bottom surface 41a of the conductive case 41, only the contact portion 45b of the first contact member 45 is provided. Instead, the contact portion 46b of the second contact member 46 contacts the outer bottom surface 41c of the conductive case 41.

Therefore, in the above configuration, the sphere 44
When an external vibration that causes the first rising gradient to move is generated, the output terminal 45a at the end of the first contact member 45 is first electrically connected to the lead of the conductive cover 43, and the sphere 44 When a stronger external vibration such as moving the second ascending gradient is generated, the output terminal 45a at the end of the first contact member 45 and the output terminal 46b at the end of the second contact member 46 are also electrically conductive. Since the lead is electrically connected to the lead 43, in the seismic sensor of the fourth embodiment, 1
Although it is a single seismic sensor, multiple outputs can be obtained according to the seismic intensity.

In the fourth embodiment, the number of the movable contact members 45 and 46 is two. However, the number may be more than two.

(Embodiment 5) Referring to FIG. 8, a shock absorber according to Embodiment 5 will be described. The shock absorber according to Embodiment 5 includes a conductive or insulating case 51 and a switch. A base 52, a cover 53, a sphere 54, first and second fixed contact members 55 and 56, and a movable contact member 57;
And an operation mechanism 58. The first and second contact members 55 and 56 and the movable contact member 57 constitute a contact mechanism.

The case 51 has an upper opening and an inner bottom surface 51.
An opening 51b is provided at the center of a, and a first uphill slope and a second uphill slope that is steeper than the first uphill slope are provided within a predetermined distance from the opening 51b.

The cover 53 is attached to the upper opening of the case 51.

First and second fixed contact members 55 and 56
Are both fixed to the bottom of the switch base 52 at the left end in the figure, and the tip of the left end is protruded outside the switch base 52 to be the first and second output terminals 55a and 55, respectively.
6a, and the right end in the figure extends rightward to form fixed contact portions 55b and 56b. In this case, the fixed contact portion 55b of the first fixed contact member 55 is located at a position lower than the fixed contact portion 56b of the second fixed contact member 56.

The movable contact member 57 is connected to the switch base 52.
The right end in the figure is fixed to the bottom, and the right end of the right end is taken out of the switch base 52 to provide a common output terminal 57a.
In the figure, the left end extends leftward in FIG.
7b. The fixed contact portions 55b and 56b of the fixed contact members 55 and 56 are located above the movable contact portion 57b.

The operating mechanism 58 is fixed on the movable contact member 57 and faces the inside of the case 51 through the opening 51b of the case 51. When the spherical body 54 is located thereon, The movable contact member 57 is pressed downward by its own weight to move the movable contact portion 57b of the movable contact member 57 to the contact portions 55b, 55b of the fixed contact members 55, 56, respectively.
56b.

Then, the operation mechanism 58 is mounted on the sphere 5 from above.
4 begins to rise on the first climbing gradient and shifts in position,
The load of the operation mechanism 58 pressing the movable contact member 57 downward is reduced. Then, the movable contact member 57
Raises the movable contact portion 57b by its own spring property. At this time, since the contact portion 56b of the first fixed contact member 56 is close to the movable contact portion 57b, the contact portion contacts the movable contact portion 57b first.

Next, the sphere 54 is attached to the inner bottom surface 51 of the case 51.
When the vehicle is on the second uphill slope beyond the first uphill slope at a, the operating mechanism 58 is not subjected to the weight of the ball 54 at all, and the movable contact portion 57b of the movable contact member 57 is Since the movable contact portion 57b rises higher than the above case, not only the contact portion 55b of the first contact member 55 closer to this movable contact portion 57b but also the second contact portion farther from the movable contact portion 57b Contact portion 56 of member 56
It will also contact b.

Therefore, in the above configuration, the sphere 54
When an external vibration that causes the first rising gradient to move is generated, the first output terminal 55 on the first fixed contact member 55 side
a and the common output terminal 57b on the movable contact member 57 side are first electrically connected to each other, and when a stronger external vibration that causes the sphere 54 to move the second upward gradient is generated, the second
The second output terminal 56a on the fixed contact member 56 side is also electrically connected to the common output terminal 57a on the movable contact member 57 side. However, multiple outputs can be obtained according to the seismic intensity.

In the fifth embodiment, two fixed contact members and one movable contact member are used.
The number of the fixed contact members may be one, and the number of the movable contact members may be two, and each of the movable contact members may be individually operated by the operation mechanism so that each movable contact member can be brought into contact with the fixed contact member.

(Embodiment 6) Referring to FIG. 9, a seismic device according to Embodiment 6 will be described. The seismic device according to Embodiment 6 includes a case 61, first and second switches. The bases 62 and 63, the guide plate 64, the sphere 65, and the first
And second contact mechanisms 66 and 67, and first and second operating mechanisms 68 and 69.

The case 61 has an opening 6 at the center of the inner bottom surface 61a.
1b, the peripheral edge of which rises from the opening 61b to form a slope structure.

The lower first switch base 63 is located below the case 61 and the upper second switch base 6 is located below the case 61.
2 are mounted on the upper side of the case 61, respectively.

The guide plate 64 is provided on the inner wall step 6 of the case 61.
1c.

The first contact mechanism 66 includes a pair of fixed contact members 66 a and 66 b whose ends are partially exposed to the outside in the first switch base 62, and one fixed contact 66.
b and a movable contact member 66c whose end is fixed.

The second contact mechanism 67 includes a fixed contact member 67 a and a movable contact member 6 on the second switch base 63.
7b.

The first operating mechanism 68 has an annular engaging portion 68a extending downward so as to engage with the annular concave portion 64a of the guide plate 64 at the peripheral edge, and a lower portion on the inner peripheral side than the annular engaging portion 68a. It has an extending annular pressing portion 68b and a convex portion 68c above the central portion thereof, and the lower end of the annular pressing portion 68b is formed with a slope along the sphere 65. When the lower end slope of the annular pressing portion 68b is pressed by the sphere 65, the first operating mechanism 68 moves upward while the annular engaging portion 68a is guided by the annular concave portion 64a of the guide plate 64. , The projection 68c is the first
The movable contact member 66c of the contact mechanism 66 is pressed upward.

The second operating mechanism 69 includes the second contact mechanism 6
7, is fixed on the movable contact member 67 b, and faces the inside of the case 61 through the bottom opening 61 b of the case 61. When the spherical body 65 is located thereon, the movable contact is carried out by the weight of the spherical body 65. The member 67b is pressed downward, thereby separating the movable contact portion b1 of the movable contact member 67b from the contact portion a1 of the fixed contact member 67a. Then, when the sphere 65 is not positioned thereon, the second operation mechanism 69 first sets the sphere 6
When 5 is on the slope of the inner bottom surface 61a of the case 61, the contact portion b1 of the movable contact member 67b rises by its own spring property, and the fixed contact member 67
The contact portion a1 is in contact with the contact portion a1.

Therefore, in the above configuration, the sphere 65
When an external vibration of a first level that moves the first rising gradient occurs, the first operating mechanism 68
The contact portion of the movable contact member 66c in the contact mechanism 66 of the above contacts the contact portion of the fixed contact member 66a to obtain an output, so that the sphere 65 is moved to the second ascending slope to the outside of a stronger second level. When the vibration is generated, the second operating mechanism 69 causes the contact portion b1 of the movable contact member 67b of the second contact mechanism 67 to come into contact with the contact portion a1 of the fixed contact member 67a to obtain an output. In the case of the fifth seismic sensor, a plurality of outputs can be obtained in accordance with the seismic intensity while being one seismic sensor.

(Seventh Embodiment) FIG. 10 is a side sectional view of a seismic sensor according to a seventh embodiment. The seismic sensor according to the seventh embodiment is configured such that the seismic sensor according to the first embodiment is swingably housed and held in another case (referred to as an outer case) 71 so that a normal posture can be maintained when the sensor is mounted. Adjustment is unnecessary. That is, the damper oil storage chamber 72 is formed by a portion of the cover 2 of the shock sensor A (the shock sensor of the first embodiment described above) surrounded by the upper wall 2a, while the outer case 7 is formed.
A suspension body 74 is attached to the first support member 73, and the suspension body 74 has a lid 75 for the damper oil storage chamber 72.
Is attached, the damper oil storage chamber 72 is closed, and the damper member 76 at the lower end of the suspended body 74 is placed in the storage chamber 72. In the above structure, since the seismic sensor A is hung on the suspended body 74 and can swing, the horizontal adjustment of the seismic sensor A becomes unnecessary and even if there is an external vibration such as an earthquake. The vibration of the entire seismic device A is suppressed by the damper oil in the damper oil storage chamber 72, and only the sphere 5 in the seismic device A can be moved by the external vibration. Of course, the above structure can be similarly applied to each of the seismic devices of the second to sixth embodiments.

In each of the above embodiments, the sphere as the moving body moves on the bottom surface in the case, but the present invention is limited to the application to such a moving body. For example, the present invention can be applied to a moving body that is suspended in a case and moves like this pendulum according to external vibration. For example, in the first embodiment, a structure may be employed in which the moving body is suspended from the support body 3 and the bearing 9 is pushed up so that a plurality of outputs can be obtained by the moving body that moves in a pendulum according to external vibration. The shape of such a moving object is not limited to a sphere.

[0076]

As described above, according to the present invention, a moving body which moves in the case to a position corresponding to the magnitude of external vibration, and a plurality of outputs corresponding to a plurality of positions of the moving body, respectively. Since the output mechanism is provided, it is possible to provide a seismic sensor which can obtain an output with respect to a multi-step seismic intensity or vibration while being a single seismic sensor.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a seismic sensor according to Embodiment 1 of the present invention.

FIG. 2 is a plan view showing a positional relationship between a fixed contact member and a bearing in FIG. 1;

FIG. 3 is a side sectional view of a seismic sensor according to Embodiment 2 of the present invention.

FIG. 4 is a plan view of each contact member of FIG. 2;

FIG. 5 is a side sectional view of a seismic sensor according to Embodiment 3 of the present invention.

FIG. 6 is a side sectional view of a seismic sensor according to Embodiment 4 of the present invention.

FIG. 7 is a plan view showing a positional relationship between the movable contact member and the operation mechanism in FIG. 6;

FIG. 8 is a side sectional view of a seismic sensor according to Embodiment 5 of the present invention.

FIG. 9 is a side sectional view of a seismic sensor according to Embodiment 6 of the present invention.

FIG. 10 is a side sectional view of a seismic sensor according to Embodiment 7 of the present invention.

[Explanation of symbols]

 Reference Signs List 1 case 2 cover 3 guide plate 4 support 5 sphere 6 movable contact member (contact mechanism) 7, 8 fixed contact member (contact mechanism) 9 bearing (operation mechanism) 10, 11 output terminal

[Procedure amendment]

[Submission date] June 26, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 7

FIG. 6

FIG. 8

FIG. 9

FIG. 10

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideyuki Bingo Omron Co., Ltd. (10) Hanazono Todocho, Ukyo-ku, Kyoto-shi, Kyoto (72) Inventor Tatsuhide Morisawa 1005 Iwajo, Kurayoshi-shi, Tottori Omron Kurayoshi Co., Ltd.

Claims (11)

[Claims] 1. A moving body that moves in a case to a position corresponding to the magnitude of external vibration, and an output mechanism that obtains a plurality of outputs corresponding to a plurality of positions of the moving body. Characteristic seismic sensor. 2. The seismic sensor according to claim 1, wherein said output mechanism comprises: a plurality of contact mechanisms; and an operating mechanism for switching a contact state of each of said contact mechanisms in accordance with movement of said moving body. A seismic sensor characterized by including. 3. The seismic sensor according to claim 2, wherein the plurality of contact mechanisms are respectively formed by a movable contact member displaced by the operation mechanism, and the movable contact member by different displacement positions of the movable contact member. A plurality of fixed contact members, the contact states of which are switched by contact with each other. 4. The seismic sensor according to claim 3, wherein said operating mechanism is displaced by being pushed from said moving body by movement of said moving body. 5. The seismic device according to claim 3, wherein the operating mechanism is displaced by a change in its own weight from the moving object due to the movement of the moving object. 6. The seismic sensor according to claim 2, wherein the plurality of contact mechanisms are contacted by the movement of the movable body to contact the movable body to switch a contact state, and a contact is provided by the operating mechanism. And a contact member whose state is switched. 7. The seismic sensor according to claim 2, wherein the plurality of contact mechanisms include a plurality of movable contact members whose contact states are respectively switched according to a displacement position of the operation mechanism. Seismic sensor. 8. The seismic sensor according to claim 2, further comprising a plurality of said operation mechanisms, wherein said plurality of contact mechanisms switch contact states in accordance with respective operation positions of said corresponding operation mechanisms. A seismic sensor characterized by the following. 9. The seismic sensor according to claim 8, wherein the operating mechanism is a first operating mechanism that is pushed upward and moves in accordance with the movement of the moving body, and the case is opened from a bottom opening of the case. And a second operating mechanism that is urged to face inward and moves upward with the degree of the weight of the moving body, and a contact state of each of the plurality of contact mechanisms is switched by each of the operating mechanisms. A seismic sensor characterized by being performed. 10. The seismic sensor according to claim 1, wherein the output mechanism is arranged corresponding to each position of the moving body, and a contact state is switched according to the position of the moving body. A seismic sensor characterized by including a plurality of contact mechanisms. 11. The seismic sensor according to claim 1, wherein the case is supported by a support mechanism so as to be able to swing and can hold a normal posture. vessel.