JP2000100299A - Signal switchegear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent troubles in signal stitching action. SOLUTION: This signal switchgear provided with a metal base 1; fixed terminals 3a, 3b, 3c fixed to the metal base 1 in insulated conditions; movable contact pieces 13a, 13b to get in contact with/apart from the fixed terminals 3a, 3b, 3c to open/close a signal; a card 10 to drive the movable contact pieces 13a, 13b to get in contact with/apart from the fixed terminals 3a, 3b, 3c; a shield member 4 joined with the metal bass 1 in such a way that an enclosing part 4b to enclose the movable contact pieces 13a, 13b stands on the metal base 1, and a base 16 of insulation material having a bottom part 16a in which a disposition hole sealed to a circumferential edge part of the metal base 1 disposed at an opening part by sealing compound, and a facing wall part 160 having a facing surface 16c, to face the enclosing part 4b of the shield member 4 provided to stand from the bottom part 16a. The facing wall part 160 is provided with a cut part 16d with thickness in a facing direction to the enclosing part 4b locally thinned from the side of the facing surface 16c, or provided with a through part, so the sealing compound can be inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal switching device such as a high-frequency signal relay.

[0002]

2. Description of the Related Art Conventionally, as this kind of signal switching device, there is one shown in FIGS. This is a high-frequency relay that includes a metal base A, a fixed terminal B, a movable contact piece C, a shield member D, an electromagnet E, a yoke F, and a base.
G, card H, balance spring J, armature K, and permanent magnet L are provided. In FIG. 7, the detailed shape of the base G is omitted.

The metal base A is made of metal, is formed in a substantially rectangular parallelepiped shape, and has a fixed terminal B fixed therethrough in an insulated state. The fixed terminal B is connected to and separated from the movable contact piece C so as to open and close a high-frequency signal. Shield member D
, By being joined to the metal base A, surrounding portion D ₁ provided so as to surround orbiting the movable contact piece C is erected on the periphery of the metal base A. This shield member D
Surrounding portion D ₁ of the can, cutting D ₂ is provided on the distal end portion of the standing direction.

[0004] electromagnet E is composed coil E ₃ is wound through the bobbin E ₂ the iron core E _1. Yoke F has one end fixed to one end portion of the iron core E ₁ forms a magnetic path together with the iron core E _1, the other end faces the other end portion of the iron core E _1. The yoke F forms an electromagnet block EE together with the electromagnet E.

The base G is made of an insulating material, and a sealant S is provided between the base G and the periphery of the metal base A provided in the opening.
In with with bottom G ₂ for distribution設孔G ₁ having a inner edge is bored to be sealed are provided, the shield member D opposing wall G having a facing surface G ₃ facing the enclosure D ₁ of the ₄ wall G ₅ containing is erected from the periphery of the bottom portion G ₂ has a box-like shape. An electromagnet block EE is provided on this base G,
Yoke F of the electromagnet block EE has a facing member FF having opposing surfaces F ₁ facing the surrounding portion D ₁ of the shield member D.

[0006] card H is by mounting a balanced spring J to the base G, are movably supported along the lateral direction, the extending portion H ₁ extending from the body portion of the card H, above The center part of the movable contact piece C is supported.
Armature K is disposed in the card H while interposing the permanent magnet L between the proximal end of each other, while the distal end portion of the other end portion and the iron core E ₁ of the distal end portion of the yoke F It is located in.

Next, the operation of this device will be described. coil
When energizing the electromagnet E by energizing the E _3, armature K so as to form a closed magnetic path is attracted to one end of the iron core E _1, the armature K
The card H on which is placed moves. Specifically, this card H, by the extended portion H ₁ is movable to pass the cut D ₂ of the surrounding portion D ₁ of the shield member D, the movable central portion in the extending portion H ₁ is supported When the contact piece C is driven, the driven movable contact piece C comes into contact with or separates from the fixed terminal B, and a high-frequency signal is opened and closed. Further, when stopping the energization of the coil E _3, card H is the aforementioned displaced in the reverse direction, the high-frequency signal is off.

[0008]

In the conventional signal switchgear described above, the metal base A is provided with the mounting hole G _{1 of the} base G.
When a sealant S is applied to seal between the peripheral edge of the metal base A and the inner edge of the base G, the applied sealant S is applied as shown in FIG. ,
Until the gap between the opposing surfaces G ₃ of the enclosure D ₁ and the opposing wall portion G ₄ that are disposed on the periphery of the metal base A, also, as shown in FIG. 10, the peripheral portion of the metal base A until the gap between the opposing surface F ₁ of the erected a surrounding portion D ₁ and the opposing member FF to, become sealant S from entering by capillary phenomenon, the metal base
Not only A but also shield members joined to metal base A
Even surrounding portion D ₁ and D, so fixed with a sealing material S, it is possible to firmly fix the metal base A.

However, the sealant S that has entered
Is from where cutting D ₂ is smaller in provided standing設寸method, when entering the inside of the shield member D beyond the surrounding portion D ₁ is the inside of the movable portion of the shield member D which may adhere to the extended portion H ₁ of a card H.

As described above, the sealing agent S is used as the shielding member D.
When adheres enters in the extended portion H ₁ cards H inwardly, as its attached card H of the sealant S is not easily movable in the extending portion H _1, and hence, the movable card H is sufficient Fixed terminal B and movable contact piece
There is a possibility that the contacting / separating operation with C may not be sufficiently performed, which may hinder the opening / closing operation of the signal.

The present invention has been made in view of the above points, and an object of the present invention is to provide a signal switching device which does not hinder the signal switching operation.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 comprises a metal base made of metal, a fixed terminal penetratingly fixed to the metal base in an insulated state, and a signal terminal. A movable contact piece that comes into contact with and separates from the fixed terminal so as to open and close, a card that drives the movable contact piece so that it comes into contact with and separates from the fixed terminal, and an enclosing portion provided to surround the movable contact piece so as to surround the metal base A metal shield member joined to the metal base so as to be erected on the peripheral portion, and an inner edge portion sealed with a sealing agent between the metal shield member and the peripheral portion of the metal base provided in the opening. A signal switchgear comprising: a base made of an insulating material in which a bottom portion provided with an arrangement hole is provided and a facing wall portion having a facing surface facing the surrounding portion of the shield member is provided upright from the bottom portion. , The opposing wall section is Agents that enters, are the configuration or through resection portion for locally reducing the thickness of the facing direction are provided from the opposing surface side is provided through the said surrounding portion.

According to a second aspect of the present invention, in the first aspect of the present invention, the cutout portion or the penetrating portion is provided at a position on the opposite wall portion at substantially the same height as a tip of the surrounding portion in the standing direction. Configuration.

According to a third aspect of the present invention, there is provided a metal base, a fixed terminal penetratingly fixed to the metal base in an insulated state, a movable contact piece which comes into contact with and separates from the fixed terminal so as to open and close a signal. A card for driving the movable contact piece so as to contact and separate from the fixed terminal, and an enclosing portion provided to surround the movable contact piece so as to surround the movable contact piece are joined to the metal base so as to be erected on the peripheral edge of the metal base. An insulating material provided with a bottom portion provided with an arrangement hole having an inner edge portion which is sealed with a sealant between a metal shield member and a peripheral edge portion of a metal base provided in the opening. A signal opening and closing device comprising: a box-shaped base made of a metal; and an opposing member disposed on the base and having an opposing surface opposing an enclosing portion of the shield member. , The thickness in the direction facing the surrounding portion The cutouts for locally thinner are the configuration or through portion is provided is provided through from the opposing side.

According to a fourth aspect of the present invention, in the third aspect of the invention, the cutout portion or the penetrating portion is provided at a position of the opposing member at substantially the same height as a front end of the surrounding portion in the standing direction. Configuration.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A signal switching device according to one embodiment of the present invention is a high-frequency relay, which will be described below with reference to FIGS. In FIG. 1, the base 16 simply represents a detailed shape.

Reference numeral 1 denotes a metal base, which is formed in a substantially rectangular parallelepiped shape, and has a through hole 1c penetrating from one surface 1a to the other surface 1b at both ends and the center in the longitudinal direction. In this through-hole 1c, an insulator 2 such as glass is concentrically provided on the outer surface with three round rod-shaped fixed terminals, more specifically, a normally open fixed terminal 3a, a common fixed terminal 3b and a normally closed fixed terminal.
3c are respectively led through and fixed. More specifically, these fixed terminals 3a, 3b, 3c are fixed in a penetrating manner in an insulating state because the insulator 2 is located between the respective central portions and the inner edge of the through hole 1c.

Reference numeral 4 denotes a metal shield member, which is provided with a joint 4a to be joined to one surface 1a of the base 1 by laser welding, soldering or the like. Reference numeral 5 denotes a ground terminal, which is fixed to the metal base 1 by welding with a silver solder or the like, so that the distal end is fixed from the outer surface of the metal base 1 to the fixed terminal.
It is derived in the direction of 3a, 3b, 3c. This ground terminal
5 together with the base 1, the insulator 2, the fixed terminals 3a, 3b, 3c and the shield member 4 constitute a fixed terminal block 20.

Reference numeral 6 denotes an iron core, the both ends of which are coil bobbins 7
From the coil bobbin 7 so as to protrude from the coil bobbin 7, respectively.
Is wound, the both ends of the protruding one end become magnetic pole portions 6a and 6b, and a yoke 9 forming a magnetic path together with the iron core 6 is caulked to the protruding other end (not shown). . This yoke 9 is parallel to the iron core 6 and, as shown in FIG.
8, a tip 9a at one end extending along the side of the coil 8 is opposed to one magnetic pole 6a of the iron core 6, is extended below the coil 8 and extends further upward. The other end portion 9b on the other end faces the other magnetic pole portion 6b of the iron core 6.
The yoke 9 constitutes an electromagnet block 30 together with the iron core 6, the coil bobbin 7 and the coil 8.

Reference numeral 10 denotes a card which is formed in a substantially rectangular parallelepiped shape by a molding material, has a through hole 10a at one longitudinal end thereof, and a pair of permanent magnets 11 interposed between the through holes 10a. Armatures 12a and 12b are disposed, and one armature
12a is one end of the magnetic pole 6a of the iron core 6 and one end of the yoke 9
9a, and the other armature 12b is located between the other magnetic pole portion 6b of the iron core 6 and the tip 9b on the other end side of the yoke 9.

Reference numerals 13a and 13b denote movable contact pieces, each of which is made of a conductive metal plate, and has a substantially symmetric bifurcated portion 13c at both ends. These movable contact pieces 13a, 13b are provided such that the central portions thereof are integrally formed with the card 10 so that the bifurcated portions 13c at both ends in the longitudinal direction come into contact with and separate from the fixed terminal 3, respectively, by the support portions 10b provided. , Supported along the lateral direction. In the assembled state, these movable contact pieces 13a and 13b are erected from the periphery of the joint 4a so as to stand on the periphery of the metal base 1, and form the shield member 4 together with the joint 4a. It is surrounded by a plate-shaped surrounding portion 4b.
Thus, the shield member 4 provided with the surrounding portion 4b is
An opening is formed on the side opposite to the metal base 1, and a notch 4 c is provided at two places in the surrounding part 4 b from the opening side, and has a portion where the dimension in the standing direction is shortened. ing.

A portion of the surrounding portion 4b of the shield member 4 which is close to the yoke 9 is a coil of the yoke 9
8 faces the stretched portion. In other words, the yoke 9 is an opposing member 90 having an opposing surface 9c opposing the surrounding portion 4b of the shield member 4, and the yoke 9 serving as the opposing member 90 has an upright direction. At a location that is approximately the same height as the end in the standing
A square hole-shaped through portion 9d is provided to penetrate.

As shown in FIG. 3, reference numeral 14 denotes an equilibrium spring which is formed in a substantially quadrilateral shape in plan view, and has one end 14a in the longitudinal direction held by the equilibrium spring holding plate 15 and the other end from the center in the longitudinal direction. The card 10 is disposed on the side surface on the other end side and the upper surface of the central portion of the card 10 along the end 14b with its own spring force. This balance spring 14 is a card 10, a permanent magnet
11, together with the two armatures 12a and 12b, the movable contact piece 13 and the balance spring holding plate 15, constitute a movable contact piece block 40.

Reference numeral 16 denotes a base, a bottom 16a and its bottom 16a.
The wall 16b is formed in a box shape with one opening. Of the wall portion 16b, the shielding member 4
The portion closest to and facing the surrounding portion 4b of the shield member 4 is a facing wall portion 160 having a facing surface 16c facing the surrounding portion 4b of the shield member 4, which is the facing wall portion 160. The wall 16b has a cutout 16d that locally reduces the thickness of the wall 16b in the direction opposite to the surrounding portion 4b at a position substantially at the same height as the end in the standing direction at the portion where the dimension in the standing direction is shortened. Is facing surface 16
Provided from the c side.

The base 16 has an installation hole 16e for mounting the metal base 1 of the fixed terminal block 20 on the bottom 16a.
Are drilled. The space between the inner edge of the arrangement hole 16e and the peripheral edge of the metal base 1 is sealed with the sealant S. Further, the base 16 is provided with a yoke press-fitting portion 16f for press-fitting the foot 9e of the yoke 9 of the electromagnet block 30 in order to dispose the electromagnet block 30, and the balance spring holding plate of the movable contact piece block 40 is provided. An equilibrium spring holding plate supporting portion 16g for inserting and supporting the supporting member 15 is provided. This base
The case 16 is fitted with the case 17 from the opening side.

Next, the operation of this embodiment will be described. coil
8, the armature 12a is attracted to one end of the magnetic pole 1a of the iron core 1, and the other armature 12b contacts the tip 9b of the other end of the yoke 9, thereby closing the closed magnetic path. It is formed. At this time, one end of the card 10 is
Moves in parallel with the operation of both armatures 12a and 12b against the spring force of the balance spring 14 held by the armature. During this parallel movement, the support portion 10a of the card 10 passes through the notch 4c provided in the shield member 4.

As described above, when the card 10 moves in parallel, the movable contact piece supported by the support portion 10b of the card 10
As shown in FIG. 4 (a), both ends of the movable contact piece 13a are in contact with the normally open fixed terminal 3a and the common fixed terminal 3b, respectively. Both ends of the other movable contact piece 13b are separated from the common fixed terminal 3b, and come into contact with the contact portion 4e provided by bending the plate-shaped surrounding portion 4b of the shield member 4.
Thus, the two movable contact pieces 13a and 13b are three fixed terminals 3
Signals are opened and closed by approaching and separating from a, 3b, and 3c, respectively.

When the energization of the coil 8 is stopped to stop the excitation, the other armature 12b contacts the other end magnetic pole portion 1b of the iron core 1 and the one armature 12a A closed magnetic path is formed in contact with the tip 9a on one end side of 9. At this time, the card 10 is translated in the opposite direction by the spring force of the balance spring 14. During this parallel movement, the support portion 10b of the card 10 passes through the notch 4c provided in the shield member 4.

When the card 10 moves in a parallel manner, the normally closed fixed terminal 3c and the common fixed terminal 3c as shown in FIG.
3b, both ends of the other movable contact piece 13b are in contact with each other, and both ends of one movable contact piece 13a are separated from the normally-open fixed terminal 3a and the common fixed terminal 3b, respectively. Contact As described above, the signals are opened and closed by the two movable contact pieces 13a and 13b coming into and out of contact with the three fixed terminals 3a, 3b and 3c.

In such a signal opening / closing device, the sealing agent S that has entered between the surrounding portion 4b of the shield member 4 and the facing surface 16c of the facing wall portion 160, as shown in FIG. Department
The facing surface 16 so that the thickness in the direction facing 4b is locally reduced.
Since the sealant S enters and accumulates in the cutout portion 16d provided in the opposite wall portion 160 from the c side, the sealant S does not enter the shield member 4 beyond the surrounding portion 4b, so that the card is inserted inside the surrounding portion 4b. 10 or the movable contact pieces 13a, 13b, so that the fixed terminals 3a, 3b, 3c and the movable contact pieces 13a, 13b come into contact with and separate from each other. Operation is not hindered.

As long as the sealing agent S does not exceed the surrounding portion 4b, the more the sealing agent S enters between the surrounding portion 4b and the facing surface 16c of the facing wall portion 160, the more the metal member 1 and the shielding member 4 come into contact.
Is firmly fixed to the base 16,
d is provided at a position substantially at the same height as the front end of the surrounding portion 4b in the facing wall portion 160 in the standing direction, so that the sealing agent S can be sealed with the surrounding portion 4b and the facing wall portion 16 up to the limit not exceeding the surrounding portion 4b.
Thus, the metal base 1 can be firmly fixed because it comes into the gap between the metal base 1 and the opposing surface 16c.

The surrounding portion 4b of the shield member 4 and the yoke 9
As shown in FIG. 5, the sealant S which has entered between the opposing surface 9c of the opposing member 90 and the sealant S enters and penetrates a through portion 9d provided through the opposing member 90. As a result, since it does not enter the inside of the shield member 4 beyond the surrounding portion 4b, it does not adhere to the movable portion such as the card 10 or the movable contact pieces 13a, 13b inside the surrounding portion 4b, and the fixed terminals 3a, The contact / separation operation between the movable contact pieces 13a, 13b and the movable contact pieces 13a, 13b becomes a predetermined operation, and does not hinder the opening / closing operation of the signal.

As long as the sealing agent S does not exceed the surrounding portion 4b, the facing surface of the facing member 90 made of the surrounding portion 4b and the yoke 9 is not used.
Since the metal base 1 is firmly fixed to the base 16 together with the shield member 4 as it invades between the base member 9c and the shield member 4, the penetrating portion 9d is substantially the same as the end of the surrounding member 4b in the standing direction in the facing member 90. By being provided at the same height, the sealing agent S comes to enter between the surrounding portion 4b and the facing surface 9c of the facing member 90 to the extent that it does not exceed the surrounding portion 4b,
The metal base 1 can be firmly fixed.

In this embodiment, the penetrating portion 9d is provided so as to penetrate the opposing member 90 made of the yoke 9, but the opposing surface is so formed as to locally reduce the thickness in the direction facing the surrounding portion 4b. The same effect can be obtained even if a cutout is provided in the facing member 90 from the side.

In this embodiment, a cut-out portion 16d is provided on the opposing wall portion 16b, which is a part of the wall portion 16b, from the opposing surface 16c side so as to locally reduce the thickness in the direction opposing the surrounding portion 4b. However, the same effect can be obtained even if the penetrating portion is provided to penetrate.

In the present embodiment, the facing member 90 is made of the yoke 9, but is not limited to the yoke 9. For example, the facing member 90 may be a mere metal member arranged to face the surrounding portion 4b. May be.

In the present embodiment, the structure in which the penetrating portion 9d is provided through the opposing member 90 made of the yoke 9 and the wall
The facing wall portion 160, which is a part of the portion 16b, is cut away from the facing surface 16c side so as to locally reduce the thickness in the direction facing the surrounding portion 4b.
The configuration with both the configuration provided with 16d and
For example, when the amount of the sealant S is small and does not adhere to the movable portion such as the card 10 or the movable contact pieces 13a and 13b inside the surrounding portion 4b, either one configuration may be employed.

Further, the cutout 16d is provided at a position on the opposite wall 160 substantially at the same height as the end of the surrounding portion 4b in the standing direction, and the penetrating portion 9d is provided with a facing member 90 made of the yoke 9. Is provided at a position substantially at the same height as the end of the surrounding portion 4b in the standing direction, for example, when the metal base 1 can be firmly fixed, one or both of the metal base 1 and the surrounding portion 4b It may be provided at a position lower than the end in the standing direction.

Although the present embodiment is a high-frequency relay, the same effect can be obtained with a normal electromagnetic relay or a switch.

[0040]

According to the first aspect of the present invention, the sealant that has entered between the surrounding portion of the shield member and the facing surface of the facing wall locally reduces the thickness in the direction facing the surrounding portion. The sealant enters and accumulates in the cutout portion provided in the opposing wall portion or the penetrating portion provided through the opposing wall portion from the opposing surface side so as to be thinner, so that the sealing agent passes over the surrounding portion and inwardly of the shield member. Since it does not enter, it does not adhere to a movable part such as a card or a movable contact piece inside the surrounding part, and the contacting and separating operation between the fixed terminal and the movable contact piece becomes a predetermined one, and the signal opening and closing operation Will not interfere.

According to a second aspect of the present invention, in addition to the effect of the first aspect of the present invention, as long as the sealing agent does not exceed the surrounding portion, the sealant penetrates between the surrounding portion and the facing surface of the facing wall portion. Since the metal base is firmly fixed to the base together with the shield member, the cutout portion or the penetrating portion should be provided at a position on the opposite wall portion substantially at the same height as the end of the surrounding portion in the standing direction. As a result, the sealant enters between the surrounding portion and the facing surface of the facing wall portion to the extent that the sealing agent does not exceed the surrounding portion, and the metal base can be firmly fixed.

According to the third aspect of the present invention, the sealant that has entered between the surrounding portion of the shield member and the facing surface of the facing member locally reduces the thickness in the direction facing the surrounding portion. Since the sealing agent enters and accumulates in the cutout portion provided in the opposing member or the penetrating portion provided through the opposing wall portion from the opposing surface side, the sealing agent does not enter the shield member beyond the surrounding portion, It does not adhere to a movable part such as a card or a movable contact piece inside the surrounding part, and the contacting / separating operation between the fixed terminal and the movable contact piece becomes a predetermined one, which hinders the opening / closing operation of a signal. No longer.

According to a fourth aspect of the present invention, in addition to the effect of the third aspect, as long as the sealant does not exceed the enclosing portion, the sealant penetrates between the enclosing portion and the facing surface of the facing member. Since the metal base is firmly fixed to the base together with the shield member, the cutout portion or the penetrating portion is provided at a position substantially at the same height as the end of the surrounding portion in the standing direction in the facing member, To the extent that the sealing agent does not exceed the surrounding portion, the sealant enters between the surrounding portion and the facing surface of the facing member, and the metal base can be firmly fixed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a front sectional view of the same.

FIG. 3 is a plan view of the base.

FIG. 4 is a partial cross-sectional view showing a positional relationship between a surrounding portion of the shield member and an opposing wall portion.

FIG. 5 is a partial cross-sectional view showing a positional relationship between an enclosing portion of the shield member and a yoke as an opposing member.

FIG. 6 is a partial plan view showing a state where the fixed terminal and the movable contact piece are in contact with and separated from each other.

FIG. 7 is an exploded perspective view of a conventional example.

FIG. 8 is a plan view of the base.

FIG. 9 is a partial cross-sectional view showing a positional relationship between the surrounding portion of the shield member and an opposing wall portion.

FIG. 10 is a partial cross-sectional view showing a positional relationship between the surrounding portion of the above shield member and a yoke as an opposing member.

[Explanation of symbols]

 1 Metal base 3a Normally open fixed terminal 3b Common fixed terminal 3c Normally closed fixed terminal 4 Shield member 4b Enclosure 13a Movable contact piece 13b Movable contact piece 16 Base 16a Bottom 16c Opposite surface 16d Cutout 16e Arrangement hole 160 Opposite wall 9c Opposing surface 9d Penetration 90 Opposing member S Sealant

Claims (4)

[Claims] 1. A metal base made of metal, a fixed terminal penetratingly fixed to the metal base in an insulated state, a movable contact piece that comes into contact with and separates from the fixed terminal so as to open and close a signal, and comes into contact with and separates from the fixed terminal. A card that drives the movable contact piece, and a metal shield member joined to the metal base so that the surrounding portion provided to surround and surround the movable contact piece is erected on the peripheral edge of the metal base. A bottom portion provided with an installation hole having an inner edge portion sealed with a sealing agent between the peripheral portion of the metal base provided in the opening portion and facing the surrounding portion of the shield member; A signal switching device comprising: a base made of an insulating material in which an opposing wall having an opposing surface is erected from a bottom; wherein the opposing wall faces the surrounding portion so that the sealing agent enters. Locally thinner Signal switchgear dividing portion, wherein the or penetrating portion is provided from a face side is provided through. 2. The signal opening / closing device according to claim 1, wherein the cutout portion or the penetrating portion is provided at a position on the opposite wall portion substantially at the same height as a front end of the surrounding portion in a standing direction. apparatus. 3. A metal base made of metal, a fixed terminal penetratingly fixed to the metal base in an insulated state, a movable contact piece that comes into contact with and separates from the fixed terminal so as to open and close a signal, and comes into contact with and separates from the fixed terminal. A card that drives the movable contact piece, and a metal shield member joined to the metal base so that the surrounding portion provided to surround and surround the movable contact piece is erected on the peripheral edge of the metal base. A box-shaped base made of an insulating material provided with a bottom provided with an installation hole having an inner edge portion sealed with a sealing agent between the opening and the peripheral portion of the metal base provided in the opening; And a facing member provided on the base and having a facing surface facing the surrounding portion of the shield member, wherein the facing member includes: Locally reduce the thickness in the facing direction Signal switchgear dividing portion, wherein the or penetrating portion is provided from a face side is provided through. 4. The signal opening / closing device according to claim 3, wherein the cutout portion or the penetrating portion is provided at a position of the opposing member at substantially the same height as a front end of the surrounding portion in a standing direction. .