JP2908362B2 - Shock sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shock sensor, and more particularly, to a shock sensor having a conductive ball.

[0002]

2. Description of the Related Art Conventionally, this type of shock sensor is used for detecting a shock applied to a vibrating object or the like, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-1876.
As disclosed in JP-A-21, a plurality of pillars having four output terminals (feet), having a conductive portion and an insulating portion, and a portion surrounded by the plurality of pillars The four output terminals are inserted into holes of a board or the like and attached to an object or the like for which vibration is to be detected, and a slope is provided. The slope allows the conductive sphere to move in one direction. The conductive sphere and the conductive part of the column are kept in contact with each other, and when the object to which this sensor is attached vibrates, it is detected whether or not the conductive sphere and the conductive part of the column are separated. Thus, the shock received by the object was detected.

[0003]

In the conventional shock sensor described above, when mounting the sensor on a board or the like, it is necessary to align these four output terminals (legs) with holes of the board or the like at the same time. There is a problem that it is difficult to implement. In addition, since the conductive sphere needs to be oriented in one direction to create an inclined portion for contacting the conductive sphere with the conductive portion of the column, there is a problem that the number of parts increases.

[0004] An object of the present invention is to provide a shock sensor which can be easily mounted automatically and has a small number of parts in order to eliminate such conventional disadvantages.

[0005]

According to the present invention, there is provided a shock sensor comprising: an insulating plate having a conductive pin vertically set at the center thereof and a plurality of conductive columns vertically formed at a peripheral portion thereof; And a conductive sphere inserted between the pin and the plurality of pillars so as to be freely movable in contact with a part of the pillars and the head of the pin , respectively, and corresponds to the position of each pillar of the plurality of pillars. And a conductive plate having a plurality of circular holes at respective positions, wherein the plurality of columns are inserted and fitted into these circular holes to electrically connect the plurality of columns.

Further, the shock sensor of the present invention has a first circular hole set at the center, a second circular hole set at the peripheral portion, a center of the first circular hole and the second circular hole. The center of the first circular hole on a straight line A passing through the center of
A first concave portion having a columnar shape set at a position symmetrical to the position of the circular hole, and a straight line B orthogonal to the straight line A and passing through the center of the first circular hole. A second cylindrical concave portion set at the same distance as the distance between the first circular hole and the first concave portion, and the second concave portion relative to the center of the first circular hole on the straight line B; An insulating plate having a columnar third concave portion set at a position symmetric to the position of the concave portion, a head, and the head having the head at one end and the head being inserted into the first circular hole from the other end. A post having a predetermined diameter and length such that a portion penetrating through the first circular hole has a predetermined length when inserted, fitted and fitted. A conductive pin having a predetermined diameter and length, and a conductive pin inserted and fitted into the second circular hole so that the length of a penetrating portion has a predetermined length. A plurality of conductive second columns each having a predetermined diameter and length and inserted and fitted into the first concave portion, the second concave portion, and the third concave portion, respectively; Between the first pillar and the second pillar and the head of the pin or between the second pillar and the head of the pin, the respective pillar and the head of the pin And a conductive sphere which can be freely moved into contact with each other, and the second circular hole, the first concave portion, the second concave portion, and the third concave portion provided in the insulating plate. Circular holes are respectively provided at positions corresponding to the respective positions, and the first column and the plurality of second columns are inserted and fitted into the respective circular holes provided, and these columns are electrically connected. And a conductive plate to be connected.

Further, in the shock sensor of the present invention, the thickness of the first column and the column of the pin is set to the size of the insertion hole of the board, and the distance between the first column and the column of the pin is determined. Are set at intervals between the insertion holes of the board so that the board can be automatically mounted.

In the shock sensor according to the present invention, the head of the pin has a conical shape.

Further, the sensitivity of the shock sensor of the present invention is changed by changing the angle of the cone of the head of the pin.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a structural view showing one embodiment of the shock sensor of the present invention.

The present embodiment shown in FIG. 1 has a first circular hole 11 set at the center and a second circular hole 12 set at the peripheral portion.
And a position symmetrical to the position of the second circular hole 12 with respect to the center of the first circular hole 11 on a straight line A passing through the center of the first circular hole 11 and the center of the second circular hole 12. The set first cylindrical hole 13 and the first circular hole 11 and the first concave portion 13 are arranged on a straight line B orthogonal to the straight line A and passing through the center of the first circular hole 11 from the first circular hole 11. And the second concave portion 14 having a columnar shape set at the same distance as the distance between the second concave portion 14 and the center of the first circular hole 11 on the straight line B. An insulating plate 1 made of, for example, bakelite having a third concave portion 15 having a columnar shape, a head portion, and the head portion is inserted at one end while leaving the head portion in the first circular hole 11 from the other end. An example including a column having a predetermined diameter and length such that the length of a portion penetrating through the first circular hole 11 when fitted and fitted is a predetermined length. For example, a conductive pin 2 made of brass or the like is inserted into the second circular hole 12 and fitted so that the length of a penetrating portion having a predetermined diameter and length has a predetermined length. For example, brass, which has a conductive first pillar 3 made of brass or the like, has a predetermined diameter and length, and is inserted and fitted into the first recess 13, the second recess 14 and the third recess 15, respectively. A plurality of conductive second pillars 4 between the first pillar 3 and the second pillar 4 and the head of the pin 2 or between the second pillar 4 and the head of the pin 2 A conductive ball 5 made of, for example, brass, which can be freely moved and put in contact with each column and the head of the pin 2, a second circular hole 12 provided in the insulating plate 1, and a first concave portion 1
3, circular holes are provided at positions corresponding to the respective positions of the second concave portion 14 and the third concave portion 15 and inserted into the respective circular holes provided with the first pillar 3 and the plurality of second pillars 4. And a conductive plate 6 made of brass or the like, for example, which electrically connects these columns.

Next, a shock sensor according to the present embodiment will be described in detail with reference to FIGS. 2, 3 and 4. FIG.

FIG. 2 is a diagram showing an example of an insulating plate.
(A) is a view of the insulating plate 1 as viewed from above, and (B)
Is a view of the insulating plate 1 as viewed from below. The insulating plate 1 has the first circular hole 11 at the center of the insulating plate 1.
Second circular holes 12 are provided in the periphery of the insulating plate 1 respectively. Then, the first concave portion 13 having a columnar shape is formed so that the center of the first circular hole 11 on the straight line A passing through the center of the first circular hole 11 and the center of the second circular hole 12 has a second position. The second concave portion 14 having a columnar shape is provided at a position symmetrical to the position of the circular hole 12, and the first concave portion 14 is formed on a straight line B orthogonal to the straight line A and passing through the center of the first circular hole 11.
A third concave portion 15 having a columnar shape provided at the same distance from the circular hole 11 as the distance between the first circular hole 11 and the first concave portion 13.
Is provided at a position symmetrical to the position of the second concave portion 14 with respect to the center of the first circular hole 11 on the straight line B.

FIG. 3 is a view showing an example of the pin. The head has a conical shape with a slightly rounded tip, and a column is connected to the center of the bottom of the conical shape. The pillar portion is a pillar having a diameter slightly smaller than the hole of the substrate or the like so that the pillar portion can be inserted into the hole of the substrate or the like on which the shock sensor of the present embodiment is mounted.

FIG. 4 is a diagram showing an example of a mounting diagram of the embodiment of the present invention, and shows a state where the shock sensor of the embodiment is mounted on a substrate.

Referring to FIG. 1, first, a procedure for assembling the shock sensor according to the present embodiment will be described. First, FIG.
The pin 2 shown in FIG. 3 is inserted vertically into the first circular hole 11 of the insulating plate 1 shown in FIG. At this time, when the shock sensor of the present embodiment is attached to a substrate or the like (hereinafter, referred to as a substrate), the length of the pillar portion of the pin 2 at the portion penetrating the insulating plate 1 is shown in FIG.
As shown in (1), the length of the pillar portion of the pin 2 can be penetrated through the substrate, and the length of the pin 2 can be soldered to the penetrated portion in advance. Next, the second circular hole 12 of the insulating plate 1 shown in FIG.
Then, the first column 3 is vertically inserted and fitted. At this time,
The first column 3 is a column having a diameter slightly smaller than the hole of the substrate so that the first column 3 can be inserted into the hole of the substrate when the shock sensor of the present embodiment is mounted on the substrate. The length of the pin 2 penetrating the plate 1 is made approximately the same length as the length of the penetrating portion of the column. Next, the first concave portion 13, the second concave portion 14, and the third concave portion 13 of the insulating plate 1 shown in FIG.
The second pillars 4 are vertically inserted and fitted into the concave portions 15. At this time, the length of the portion remaining without being inserted into each concave portion after fitting is the length of the portion remaining without being inserted when the first column 3 is inserted into the second circular hole 12. Of similar length (for example, 1.... Of the diameter of the conductive sphere 5).
5 to 2 times. ), The length of the first pillar 3 and the length of the second pillar 4 are determined in advance. Then, a conductive ball 5 is placed between the first pillar 3 and the second pillar 4 and the head of the pin 2 or between the second pillar 4 and the head of the pin 2. Next, a conductive plate provided with circular holes at positions corresponding to the positions of the second circular hole 12, the first concave portion 13, the second concave portion 14, and the third concave portion 15 provided in the insulating plate 1, respectively. The first column 3 and the plurality of second columns 4 respectively corresponding to the circular holes 6 are inserted and fitted. At this time, these columns are electrically connected by the conductive plate 6.

Next, the operation of the shock sensor according to the present embodiment will be described. By assembling as described above, the conductive sphere 5 is pushed out by the head of the pin 2 without staying at the center of the insulating plate 1, and the conductive sphere 5 is It is stably stopped while being supported by the third column 2 and the head of the pin 2 or by the second column 4 and the head of the pin 2. At this time, the first pillar 3
Is electrically connected to the second column 4 by the conductive plate 6,
The first column 3 and the pin 2 are brought into conduction. When the object equipped with the shock sensor vibrates, the conductive ball 5
Has moved away from being supported by the first column 3 and the second column 4 and the head of the pin 2 or by the second column 4 and the head of the pin 2 And the pin 2 are turned off. By detecting the non-conduction state by an external device, it is determined that a shock is applied to the object to which the shock sensor is attached. Then, the conductive ball 5 is further moved by this vibration, and the first column 3 and the second column 4 are again moved.
When the first column 3 and the pin 2 are supported by the second column 4 and the head of the pin 2, the first column 3 and the pin 2 become conductive again. By detecting the conductive state and the non-conductive state with an external device, it is determined that the object to which the shock sensor is attached is vibrating.

The detection sensitivity of this shock sensor is changed by changing the angle θ of the cone of the head of the pin 2 shown in FIG. That is, the angle of the cone is 180
When approaching the degree, the conductive ball 5 separates from the state supported by the head of the pin 2 and the plurality of columns with a small impact, so that the first column 3 and the pin 2 become non-conductive with a small impact, If the angle of the cone is set apart from 180 degrees, the first ball 3 and the pin 2 will not move away from the state where the conductive sphere 5 is supported by the head of the pin 2 and the plurality of columns unless a large impact is applied.
Are less likely to become non-conductive. Therefore, by changing the angle of the cone of the head of the pin 2, the detection sensitivity of the shock sensor can be changed.

In the above description, the shape of the head of the pin 2 is conical, but without being limited to the conical shape, as shown in FIG.
The shape may be (b) a part of a sphere or (c) a shape in which a part of a sphere is attached on a column. Then, in order to change the detection sensitivity of the shock sensor when the shape of the head of the pin 2 is changed to the shape (b) or (c), the diameter of the ball attached to the head of the pin 2 may be changed. Further, each of the first pillar 3, the second pillar 4, and the pillar of the pin 2 may be a cylindrical pillar or a polygonal pillar.

[0021]

As described above, according to the shock sensor of the present invention, since it is constituted by the insulating plate, the pin, the first column, the second column, and the conductive plate, the number of parts is small, and Since it can be mounted on a substrate or the like by two pillars, the first pillar and the pin, automatic mounting is easy.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing one embodiment of a shock sensor of the present invention.

FIG. 2 is a diagram illustrating an example of an insulating plate.

FIG. 3 is a diagram illustrating an example of a pin.

FIG. 4 is a diagram showing an example of a mounting diagram according to the embodiment of the present invention.

FIG. 5 is a diagram showing another example of a pin head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating plate 2 Pin 3 1st column 4 2nd column 5 Conductive ball 6 Conductive plate 11 1st circular hole 12 2nd circular hole 13 1st recessed part 14 2nd recessed part 15 3rd recessed part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-187621 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01H 1/00 H01H 35/14

Claims (5)

(57) [Claims] 1. An insulating plate in which a conductive pin is vertically set at the center and a plurality of conductive columns are vertically set at a peripheral portion, a part of the plurality of columns and a head of the pin. A conductive sphere inserted between the pin and the plurality of columns so as to be freely movable in contact with each other; and a circle having a circular hole at a position corresponding to the position of each column of the plurality of columns. And a conductive plate that inserts and fits the plurality of columns into the holes to electrically connect the plurality of columns. 2. A straight line A passing through a first circular hole set at the center, a second circular hole set at a peripheral portion, and the center of the first circular hole and the center of the second circular hole. A first concave portion having a columnar shape set at a position symmetrical to a position of the second circular hole with respect to a center of the first circular hole, and a first concave portion orthogonal to the straight line A;
A second cylindrical concave portion set at a position on the straight line B passing through the center of the circular hole at the same distance from the first circular hole as the distance between the first circular hole and the first concave portion; An insulating plate having a columnar third concave portion set at a position symmetrical to the position of the second concave portion with respect to the center of the first circular hole on the straight line B; The length of a portion penetrating through the first circular hole when the head is inserted into the first circular hole from the other end while leaving the head at the one end with the head remaining is fitted and fitted. A conductive pin having a pillar having a predetermined diameter and length so as to have a length, and a length of a penetrating portion having a predetermined diameter and length having a predetermined length A conductive first column inserted and fitted into the second circular hole as described above, and having a predetermined diameter and length, the first concave portion and the second concave portion.
A plurality of conductive second pillars inserted and fitted into the recesses and the third recesses, respectively, between the first pillar, the second pillar, and the head of the pin or An electrically conductive sphere, which is provided between the second pillar and the head of the pin, in contact with the pillar and the head of the pin so as to be freely movable; and provided on the insulating plate. The second circular hole, the first concave portion,
Circular holes are respectively provided at positions corresponding to the respective positions of the second concave portion and the third concave portion, and the first column and the plurality of second columns are inserted into the respective circular holes provided. 2. The shock sensor according to claim 1, further comprising: a conductive plate which is fitted and electrically connected to these columns. 3. The thickness of the first column and the column of the pin is set to the size of the insertion hole of the substrate, and the distance between the first column and the column of the pin is set to the size of the insertion hole of the substrate. 3. The device according to claim 2, wherein the substrate is automatically mounted on the substrate at intervals.
The described shock sensor. 4. The shock sensor according to claim 1, wherein the head of the pin has a conical shape. 5. The shock sensor according to claim 1, wherein the detection sensitivity is changed by changing an angle of a cone of the head of the pin.