JP2015089381A - Open/close detection switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a versatile open/close detection switch usable with economy according to a situation of an attachment part, or as necessary.SOLUTION: An open/close detection switch comprises a first switch A and a second switch B, where push buttons 2, 32 are provided on front faces of case bodies 1, 31, respectively. A connector insertion port 14 is formed on a side face of the case body 1. Connection pins 4, 6 ranging with conductive parts 5, 7 of the first switch are installed in such a way as to protrude inside the connector insertion port. Connection pins 34, 36 ranging with conductive parts 35, 37 of the second switch B are installed in such a way as to protrude on a side face of the case body 31. The case body 1 is connected with the case body 31 while being fitted back to back with the case body 31. Thus, the connection pins 34, 36 are arranged in parallel with the connection pins 4, 6 inside the connector insertion port 14.

Description

  The present invention mainly relates to a game machine such as a revolving game machine, a sparrow ball game machine, an arrangement ball, a pachinko game machine, etc. that uses a medal or a pachinko ball as a game medium, and the door body such as a transparent plate holding frame is opened and closed The present invention relates to an open / close detection switch provided for detection.

  In general, pachinko machines installed in amusement halls have a body frame (also called a game board holding frame, a game machine body, or a front frame) opened and closed on a rectangular frame-like machine frame (also called an outer frame). A game board that is pivotally supported and has a game area in which a game ball can roll is fixed to the main body frame, and a transparent plate holding frame (also referred to as a glass door frame or front door) of the main body frame. The machine frame and the transparent plate holding frame are held in a closed state with respect to the main body frame by locking the cylinder lock provided on the main body frame during operation. I have to.

  For security purposes, a detection switch is provided on the main body frame, and if there is a gap between the main body frame and the machine frame or between the main body frame and the transparent plate holding frame, the detection switch It operates and the state is detected as an electrical signal so that it can be reported to the administrator, allowing foreign objects such as wires and piano wires to enter the game machine, and important parts such as game control boards and ball payout devices can be removed. It is possible to prevent the act of operating and illegally acquiring a prize ball and the act of illegally opening the transparent plate holding frame.

  In the gaming machine disclosed in Patent Document 1 below, a door opening detection switch having a push-type first detection unit and a push-type second detection unit provided on the front surface and the rear surface is formed in the body frame in a front-rear penetration manner. The first detection unit detects the opening / closing state of the front transparent plate holding frame, and the second detection unit detects the opening / closing state of the rear frame. As a result, the above-mentioned fraudulent acts are prevented.

JP 2004-16300 A

By the way, as shown in Patent Document 1, the conventional door opening detection switch provided with detection units on both the front side and the rear side has the following problems when used in a gaming machine.
(A) In order to be able to detect this even when the transparent plate holding frame or machine frame is slightly opened, the thickness of the door opening detection switch and the thickness of the main body frame must be completely matched. Therefore, when trying to use a conventional existing door open detection switch, the body frame must be designed according to the thickness of the door open detection switch, which limits the degree of freedom in designing the body frame. There is a problem of being. In other words, the existing door opening detection switch cannot be used unless the thickness of the main body frame is constant, and there is a problem that it is not versatile.
(B) Depending on the structure of the gaming machine, it may not always be necessary to detect both the transparent plate holding frame and the machine frame, but even in such a case, if the existing door open detection switch is used, Since either the first detection unit or the second detection unit is not used, one detection unit becomes useless and wasteful.
(C) It is conceivable to install independent detection switches on both sides of the main body frame without using the existing door opening detection switches provided with detection units on both sides as shown in the cited document 1. However, in such a case, two detection switches are provided back to back in a narrow range, and such attachment is often difficult due to the structure of the main body frame and the like, and wiring must be provided for each of the two detection switches. Therefore, there is a problem that it takes time and increases the cost.

The present invention provides an open / close detection switch capable of solving the above-described problems, and a first switch and a second switch provided so that push buttons for opening and closing the electrical contacts can be moved in and out of the front surface of the case body, respectively. A connector insertion port is formed on a side surface of the case body of the first switch, and a pair of connection pins respectively connected to both conductive portions of the first switch are provided in the connector insertion port. A pair of connection pins that are connected to both conductive parts of the second switch are provided on the side surface of the switch case body, and the case body of the first switch and the case body of the second switch are connected back to back. In this state, the connection pin of the second switch is arranged in parallel with the connection pin of the first switch in the connector insertion port.
The open / close detection switch according to the present invention includes a first switch and a second switch provided so that push buttons for opening and closing the electrical contacts can be moved in and out of the front surface of the case body, and the case body of the first switch. A connector insertion port is formed on the side surface of the first switch, and a pair of connection pins respectively projecting from both conductive parts of the first switch are provided in the connector insertion port. A connecting pin connected to one conductive part of the two switches and a contact part connected to the other conductive part of the second switch are disposed on the back surface of the case body of the second switch; By connecting the body and the case body of the second switch back to back, the connection pin of the second switch is parallel to the connection pin of the first switch in the connector insertion port. Arranged in condition, wherein the contacting portion is such that one conductive portion and electrically connected in the first switch.
According to the present invention, in the open / close detection switch, a contact opening for allowing the contact portion to enter the back surface of the case body of the first switch is opened, and a sealing member is detachably fitted in the contact opening. It is made to be made to be done.
The open / close detection switch according to the present invention includes a first switch and a second switch provided so that push buttons for opening and closing the electrical contacts can be moved in and out of the front surface of the case body, and the case body of the first switch. A connector insertion port is formed on the side of the connector, and a pair of connecting pins projecting from both conductive portions of the first switch are provided in the connector insertion port, and a contact portion is connected to one conductive portion of the first switch. Is disposed on the back surface of the case body of the first switch, and a connection pin connected to one conductive portion of the second switch is provided on the side surface of the case body of the second switch so as to project the case of the first switch. By connecting the body and the case body of the second switch back to back, the connection pin of the second switch is parallel to the connection pin of the first switch in the connector insertion port. Arranged in condition, wherein the contact portion is to be conductive in the other conductive portion electrically of the second switch.
According to the present invention, in the open / close detection switch, a contact opening for allowing the contact portion to enter the back surface of the case body of the second switch is opened, and a sealing member is detachably fitted in the contact opening. It is made to be made to be done.
Further, according to the present invention, a plurality of types of opening / closing detection switches having different depth dimensions of the case body of the second switch are formed, and the second switches can be connected back to back with the first switch. It is characterized by that.

  According to the present invention, depending on the state of the switch mounting portion of the gaming machine or the necessity of detection, by mounting only the first switch alone or by mounting the first switch and the second switch in a connected state, An open / close detection switch for a gaming machine that can be used without waste as required and has versatility can be provided. In addition, when the first switch and the second switch are attached in a connected state, the connectors of the first switch and the second switch are integrated into one, so that only the plug is inserted into the integrated connector insertion port. Wiring to the first switch and the second switch can be easily performed.

The perspective view which showed 1st Embodiment of the 1st switch and 2nd switch which comprise the opening / closing detection switch which concerns on this invention. The perspective view which looked at the 1st switch and 2nd switch which were shown in FIG. 1 from the other direction. The top view of the 1st switch and 2nd switch which were shown in FIG. The side view of the 1st switch and 2nd switch which were shown in FIG. The disassembled perspective view which showed 1st Embodiment of the 1st switch of the opening / closing detection switch which concerns on this invention. The disassembled perspective view which showed 1st Embodiment of the 2nd switch of the opening / closing detection switch which concerns on this invention. The perspective view which showed 1st Embodiment of the opening / closing detection switch which concerns on this invention. The top view of the open / close detection switch of FIG. FIG. 9 is a cross-sectional view taken along line AA in FIG. 8. 1 is a longitudinal sectional view showing a first embodiment of an open / close detection switch according to the present invention. The perspective view which opened the transparent board holding frame and was seen from the front about the pachinko game machine which attached the opening / closing detection switch which concerns on this invention. The perspective view which opened the machine frame about the pachinko game machine which attached the opening / closing detection switch which concerns on this invention, and was seen from back. The perspective view which showed 1st Embodiment of the 2nd switch of the opening / closing detection switch which concerns on this invention. The perspective view which showed 1st Embodiment of the 2nd switch of the opening / closing detection switch which concerns on this invention. The perspective view which showed 2nd Embodiment of the 1st switch of the opening / closing detection switch which concerns on this invention. The perspective view which showed 2nd Embodiment of the 2nd switch of the opening / closing detection switch which concerns on this invention. The longitudinal cross-sectional view which showed 2nd Embodiment of the opening / closing detection switch which concerns on this invention. The perspective view which showed 3rd Embodiment of the 1st switch and 2nd switch which comprise the opening / closing detection switch which concerns on this invention.

Next, a first embodiment of the present invention will be described with reference to FIGS. The open / close detection switch includes a first switch A and a second switch B as shown in FIGS.
As shown in an exploded perspective view in FIG. 5, the first switch A includes a plastic case body 1 formed in a substantially square box shape, a plastic push button 2, and an upper surface of the case body 1. A plastic lid 3 matching the opening, a conductive portion 5 made of a conductive metal plate integrally formed with a rod-like connecting pin 4 at one end, and a conductive member integrally formed with a rod-like connecting pin 6 at one end. The conductive portion 7 is formed of a conductive metal plate, the conductive piece 9 is formed by folding a constant-width elastic metal plate in two and the contact 8 is formed in a bifurcated shape at one end thereof, and a coiled spring 10. The push button 2 is formed in a hollow sheath shape, the conductive piece 9 is accommodated therein, and the contact 8 of the conductive piece 9 is protruded from the base opening of the push button 2. Note that a protrusion 12 serving as a stopper for preventing the push button 2 from being detached from the case body 1 is integrally formed on the outer periphery of the base of the push button 2.

  Further, the case body 1 has a recess 11 for placing the conductive portion 5 and the conductive portion 7 on the inner bottom surface in two sections, and the front surface of the case body 1 is used for projecting the push button 2 in and out. An opening 13 is formed. Further, a substantially rectangular cylindrical connector insertion port 14 is formed integrally with the case body 1 in such a form that one side of the case body 1 and about half of the longitudinal direction protrude to the back side. As shown in the figure, an inner bottom wall 27 is formed in about half of the longitudinal length of the bottom of the connector insertion port 14, and a pair of small holes 17 communicating with the inside of the case body 1 are formed in the inner bottom wall 27. 18 is formed, and the other half of the length of the connector insertion port 14 in the longitudinal direction is penetrated to the back side of the case body 1 to form a through hole 28. Further, a recess 15 is formed at a corner between the side surface opposite to the connector insertion port 14 of the case body 1 and the back surface, and an engagement piece 16 projects from the recess 15. Reference numeral 23 denotes a connector engaging protrusion formed on the upper surface of the upper wall of the connector insertion port 14. Engagement holes 19, 20 are formed in a hanging piece integrally formed on both side edges of the lid 3, and protrusions 21, 22 that can match the engagement holes 19, 20 are formed on both sides of the case body 1. Formed on the surface. Reference numeral 24 denotes a pressing piece formed in the shape of a hanging column on the lower surface of the lid 3 in order to press and place the conductive portion 5 and the conductive portion 7 in the recess portion 11.

  And the said connection pin 4 and the connection pin 6 are inserted in the said small holes 17 and 18, and the said electroconductive part 5 and the electroconductive part 7 are each fixed to the said recessed part 11 in a non-contact state. Thereby, the connection pin 4 and the connection pin 6 are projected in parallel in the connector insertion port 14 at a predetermined interval. One end of the spring 10 is inserted into the push button 2, and the push button 2 is disposed in the opening 13 with the spring 10 in a compressed state. Then, the cover 3 is put on the case body 1, the engagement holes 19 and 20 are aligned with the protrusions 21 and 22, the cover body 3 is fixed to the case body 1, and the pressing piece 24 is used to connect the conductive portion. 5 and the conductive part 7 are pressed against movement. Therefore, when the push button 2 protrudes freely from the opening 13 due to the elasticity of the spring 10 and the push button 2 is pushed against the elasticity of the spring 10, the contact 8 is placed on the conductive portions 5 and 7. And the conductive portions 5 and 7 are made conductive. Thus, the first switch A is configured to open and close the electrical contact by moving the push button 2 in and out.

  On the other hand, as shown in an exploded perspective view in FIG. 6, the second switch B includes a plastic case body 31 formed in a substantially rectangular box shape, a plastic push button 32, and an upper surface opening of the case body 1. , A plastic lid 33 conforming to the above, a conductive portion 35 made of a conductive metal plate integrally formed with a rod-shaped connection pin 34 at one end, and a conductive material formed integrally with a rod-shaped connection pin 36 at one end. It comprises a conductive portion 37 made of a metal plate, a conductive piece 39 formed by folding a constant-width elastic metal plate in two and having a contactor 38 formed at one end and a coiled spring 40. The push button 32 is formed in a hollow sheath shape like the push button 2, and the bifurcated contact 38 is protruded from the base opening of the push button 32 by accommodating the conductive piece 39 inside. Further, the case body 31 has a recess 41 for placing the conductive portion 35 and the conductive portion 37 on the inner bottom surface in two sections, and an opening 43 for allowing the push button 32 to appear and retract on the front surface of the case body 31. Is formed. On the outer periphery of the base of the push button 32, a protruding edge 42 having a diameter larger than that of the opening 43 and acting as a stopper is formed. Further, a projecting piece 44 is integrally formed at one end of the back surface of the case body 31, and a pair of hook-shaped sandwiching pieces 45 and 46 are formed on the projecting piece 44. In addition, a rectangular protrusion 47 that can be fitted to the through hole 28 of the connector insertion port 14 from the back surface is formed near the back surface portion of one side surface of the case body 31, and the case body 31 is formed on the protrusion 47. A pair of small holes 48 and 49 communicating with the inside are formed, and the connecting pin 34 and the connecting pin 36 are inserted into the small holes 48 and 49, and the conductive portion 35 and the conductive portion 37 are respectively placed in the concave portion 41. Thus, the connection pin 34 and the connection pin 36 are protruded in parallel outward from the protrusion 47. Engagement holes 50 and 51 are formed in hanging pieces integrally formed on both side edges of the lid 33, and projections 52 and 53 that can match the engagement holes are formed on both side surfaces of the case body 31. doing. Reference numeral 58 denotes a pressing piece formed in a hanging column shape on the lower surface of the lid 33.

  The second switch B, like the first switch A, inserts one end of the spring 40 into the push button 32, places the spring 40 in a compressed state, and places the push button 32 in the opening 33. The lid 33 is placed on the case body 31 from above, the projections 52 and 53 are fitted to the engagement holes 50 and 51 to fix the lid 33, and the conductive portion 35 and the conductive portion 37 are fixed by the pressing piece 58. The push button 32 is pressed so as not to move, and is assembled by projecting the push button 32 from the opening 33 by the elasticity of the spring 40. Therefore, by pushing the push button 32 against the elasticity of the spring 40, the contact 38 advances onto the conductive portions 35 and 37, and the conductive portions 35 and 37 are electrically connected. In this way, the second switch B is also configured to open and close the electrical contact by moving the push button 32 in and out.

  The first switch A and the second switch B configured as described above are connected as shown in FIGS. That is, the case body 1 of the first switch A and the case body 31 of the second switch B are back-to-back with each other, and the protrusion 47 is fitted into the through hole 28 of the connector insertion port 14 from behind. The connection pins 34 and 36 are projected in parallel with the connection pins 4 and 6 in the connector insertion port 14, and the hook-shaped sandwiching pieces 45 and 46 are engaged with the engagement pieces 16 in the recess 15. As a result, the first switch A and the second switch B are connected.

  Thus, since the first switch A and the second switch B are connected, the four connection pins 4, 6, 34, and 36 are arranged in parallel in the connector insertion port 14. As shown in the drawing, by inserting one 4P plug 60 into the connector insertion port 14, the 4P plug 60 is attached to the connection pins 4, 6, 34, 36, and wiring is completed. The opening and closing of the electrical contacts of both switches A and B can be detected by the wiring source electronic device. That is, by connecting the first switch A and the second switch B, the connector of the first switch A and the connector of the second switch B are integrated into one connector insertion port 14. Wiring to both switches A and B is completed simply by inserting one plug 60 into the connector insertion port 14.

  As shown in FIG. 11 and FIG. 12 in which the opening / closing detection switch is used for a pachinko gaming machine, the first switch A and the second switch B in a connected state are formed in the body frame 60 so as to penetrate in the front-rear direction. The push button 2 of the first switch A is projected to the front surface of the main body frame 60, and the push button 32 of the second switch B is projected to the rear surface of the main body frame 60. Thus, the first switch A detects the open / close state of the transparent plate holding frame 61, and the second switch B detects the open / close state of the main body frame 60 relative to the machine frame 62. That is, when the transparent plate holding frame 61 is closed without a gap, the push button 2 is pressed by the transparent plate holding frame 61 and the electrical contact of the first switch A is closed, so that the closed state is electrically detected. When the gap is formed between the transparent plate holding frame 61 and the main body frame 60, the push button 2 protrudes due to the elasticity of the spring 10, and the electrical contact of the first switch A is opened to electrically detect the open state. Is done. When the main body frame 60 is closed with no gap with respect to the machine frame 62, the push button 32 is pressed by the contact plate 63 fixed to the machine frame 62 so as to face the push button 32, and the second Since the electrical contact of the switch B is closed, the closed state is electrically detected, and the push button 32 protrudes due to the elasticity of the spring 40 when a gap is formed between the machine frame 62 and the main body frame 60. The open state is detected by opening the electrical contact of the second switch B.

On the other hand, the second switch B2 shown in FIG. 13 is formed by making the depth dimension D2 of the case body 31 smaller than the depth dimension D of the case body 31 of the second switch B, and the other configuration is the second configuration. Same as switch B.
Further, the second switch B3 shown in FIG. 14 is formed by making the depth dimension D3 of the case body 31 larger than the depth dimension D of the case body 31 of the second switch B, and the other configuration is the second configuration. Same as switch B.
Thus, for the second switch, in addition to those shown in FIGS. 13 and 14, a plurality of types having different depth dimensions of the case body 31 are formed, and an appropriate one is selected according to the thickness of the main body frame 60 from among them. A second switch having a depth dimension is selected, and a second switch having an appropriate depth dimension is connected back-to-back with the case body 1 of the first switch A. As a result, the push button 2 and the push button 32 can always be attached to both surfaces of the main body frame 60 in an optimal protruding state without excess or deficiency, and a slight opening of the transparent plate holding frame 61 or the machine frame 62 can be detected. Become. In addition, since the thickness of the gaming machine opening / closing detection switch as a whole can be appropriately adjusted by the second switch to be connected, versatility occurs, and the main body frame 60, the transparent plate holding frame 61, the machine frame 62, etc. As design flexibility increases, it becomes possible to respond quickly to various needs.

Note that only the first switch A can be used alone without connecting the first switch A and the second switches B to B3. In the pachinko gaming machine shown in FIG. 11, the first switch A attached to the lower front surface of the main body frame 60 uses the first switch A alone so that the push button 2 faces the back surface of the front lower frame 64. This is an example. The front lower frame 64 shown in the figure is provided with a well-known ball tray 65, a game operation panel 66, a launch handle 67 and the like, and one side edge of the front lower frame 64 can be opened and closed on the front surface of the main body frame 60. The first switch A detects the open / closed state of the front lower frame 64 and the presence / absence of a gap between the main body frame 60 and the front lower frame 64.
Thus, according to the state of the switch mounting portion of the gaming machine or the necessity of detection, it is possible to use it without waste by mounting only the first switch alone.

Next, a second embodiment of the present invention shown in FIGS. 15 to 17 will be described. In this embodiment, a contact hole 25 having a horizontally long hole shape is opened on the back surface of the case body 1 of the first switch A as shown in FIG. In addition, by opening the contact opening 25, one of the conductive portions 7 is positioned inside the contact opening 25. Reference numeral 26 denotes a rectangular plate-shaped sealing member (cap) that can be detachably fitted into the contact opening 25 as required. Since the other structure of the 1st switch A is the same as 1st Embodiment, the same code | symbol is attached | subjected about the same part and description is abbreviate | omitted.
Further, as shown in FIG. 16, the second switch B causes only one connection pin 34 connected to one conductive portion 35 to protrude from a protrusion 47 formed on the side surface of the case body 31, and the other switch B A contact portion 55 extends from the conductive portion 37, and the contact portion 55 protrudes outward from the back surface of the case body 31 of the second switch. Since the other structure of the 2nd switch B is the same as 1st Embodiment, description is abbreviate | omitted by attaching | subjecting the same code | symbol to the same part.

  As shown in FIG. 17, the first switch A and the second switch B configured as described above are connected back to back. That is, the protrusion 47 of the case body 31 of the second switch B is fitted into the through hole 28 of the connector insertion port 14 of the first switch A from behind, so that the second switch is inserted in the connector insertion port 14. The connection pin 34 of B is arranged in parallel with the connection pins 4 and 6 of the first switch A, and the contact portion 55 is inserted into the contact opening 25, and the contact portion 55 is connected to one of the first switches. By making contact with the conductive portion 7, the conductive portion 7 and the conductive portion 37 are electrically connected. Then, by engaging the hook-shaped sandwiching pieces 45 and 46 with the engaging piece 16 in the recess 15, the connected state of the first switch A and the second switch B is maintained.

By connecting the first switch A and the second switch B in this way, the connection pin 6 functions as a common pin for the first switch A and the second switch B. For this reason, by inserting a 3P plug (not shown) into the connector insertion port 14, the 3P plug is joined to the connection pins 4, 6, and 34, and electricity obtained through the connection pins 4 and 6 is obtained. The opening / closing of the electrical contact of the first switch A is detected by the signal, and the opening / closing of the electrical contact of the second switch B is detected by the electrical signal obtained through the connection pin 6 and the connection pin 34. As described above, in the gaming machine opening / closing detection switch shown in the second embodiment, since the connection pin 6 is shared, the connector / plug can be reduced in size and the number of necessary wirings can be reduced and wiring can be completed easily. Cost is also reduced.
Also in the second embodiment, the case body 31 of the second switch B is formed with a plurality of types having different depth dimensions, so that versatility occurs and it is easy for the main body frame 60 having different thicknesses. The degree of freedom of design is increased.

  On the other hand, when the first switch A is used alone, the sealing member 26 is fitted into the contact opening 25 to seal the contact opening 25, whereby the case body is formed from the contact opening 25. In addition to preventing foreign matter from entering 1, the opening and closing of the electrical contacts of the first switch A are detected through the connection pins 4 and 6. As described above, the opening / closing detection switch for gaming machines shown as the second embodiment is useless by attaching only the first switch A alone in view of the situation of the switch mounting portion of the gaming machine and the necessity of detection. Can be used without increasing the economy.

  In the second embodiment shown in FIGS. 15 to 17, a contact opening 25 is formed on the back surface of the case body 1 of the first switch A, and the contact portion 55 is formed on the back surface of the case body 31 of the second switch B. On the contrary, a contact portion 55 connected to the conductive portion 7 of the first switch A is provided on the back surface of the case body 1 of the first switch A, and the back surface of the case body 31 of the second switch B. The contact portion 55 is made to enter the contact portion 55, and the case body 1 and the case body 31 are connected back to back, so that the contact portion 55 is connected to the other conductive portion 37 of the second switch B. And may be electrically connected to each other.

  On the other hand, in the third embodiment shown in FIG. 18, the contact portion 70 connected to the conductive portion 7 of the first switch A is disposed on the back surface of the case body 1 of the first switch A, and the second switch B A contact portion 71 connected to the conductive portion 37 of the second switch B is disposed on the back surface of the case body 31, and the case body 1 and the case body 31 are connected to each other as a back-to-back, so that the contact portion 70 and the The contact portion 71 is crimped, and the conductive portion 7 of the first switch A and the conductive portion 37 of the second switch B are electrically connected. As with the embodiment, it can be used without waste, and a versatile open / close detection switch can be provided.

A First switch B, B2, B3 Second switch D, D2, D3 Depth dimension 1, 31 Case body 2, 32 Push button 3, 33 Lid body 4, 6, 34, 36 Connection pins 5, 7, 35, 37 Conductive portions 10 and 40 Spring 14 Connector insertion port 15 Recess 16 Engagement piece 17 and 18 Small hole 25 Contact opening 26 Sealing member 27 Inner bottom wall 28 Through hole 44 Protruding piece 45 and 46 Sponge-like sandwiching piece 47 Protruding Portions 48, 49 Small holes 55, 70, 71 Contact portion 60 Body frame 61 Transparent plate holding frame 62 Machine frame

Claims (6)

  A push button for opening and closing an electrical contact is composed of a first switch and a second switch provided so as to be able to protrude and retract on the front surface of the case body, and a connector insertion port is formed on a side surface of the case body of the first switch, A pair of connecting pins respectively connected to both conductive parts of the first switch are provided in the connector insertion port, and a pair of conductive pins respectively connected to both conductive parts of the second switch are provided on the side surfaces of the case body of the second switch. A connection pin is provided so that the first switch case body and the second switch case body are connected back to back, and the connection pin of the second switch is inserted into the connector insertion port. An open / close detection switch characterized by being arranged in parallel with a connection pin of the switch.   A push button for opening and closing an electrical contact is composed of a first switch and a second switch provided so as to be able to protrude and retract on the front surface of the case body, and a connector insertion port is formed on a side surface of the case body of the first switch, A pair of connection pins respectively connected to both conductive parts of the first switch are projected in the connector insertion port, and connection pins connected to one conductive part of the second switch are provided on the side surface of the case body of the second switch. And a contact portion connected to the other conductive portion of the second switch is disposed on the back surface of the case body of the second switch, and the case body of the first switch and the case body of the second switch are arranged. By connecting them back to back, the connection pin of the second switch is arranged in parallel with the connection pin of the first switch in the connector insertion port, and the contact portion is the first switch. Closing detection switch, characterized in that as Tsu to one of the conductive portion and the electrically conductive Ji.   The contact opening for allowing the contact portion to enter the back surface of the case body of the first switch is opened, and a sealing member is detachably fitted into the contact opening. The open / close detection switch described in 2.   A push button for opening and closing an electrical contact is composed of a first switch and a second switch provided so as to be able to protrude and retract on the front surface of the case body, and a connector insertion port is formed on a side surface of the case body of the first switch, A pair of connecting pins that respectively connect to both conductive parts of the first switch protrude from the connector insertion port, and a contact part that connects to one conductive part of the first switch is provided on the back surface of the case body of the first switch. A connecting pin connected to one conductive portion of the second switch is protruded from a side surface of the case body of the second switch, and the case body of the first switch and the case body of the second switch are provided. By connecting them back to back, the connection pin of the second switch is disposed in parallel with the connection pin of the first switch in the connector insertion port, and the contact portion is the second switch. Closing detection switch, characterized in that as Tsu to the other conductive portion and the electrically conductive Ji.   The contact opening for allowing the contact portion to enter the back surface of the case body of the second switch is opened, and a sealing member is detachably fitted into the contact opening. The open / close detection switch described in 4.   6. The second switch according to claim 1, wherein a plurality of types of case bodies having different depth dimensions are formed, and each of the second switches can be connected back to back with the first switch. Open / close detection switch described in any one.

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