JP2001006470A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch capable of being operated easily, simplifying installation on a building surface, and having satisfactory appearance. SOLUTION: A reverse turn force is given to an opening and closing body 24 in accordance with the turn of an intermediate handle 30 by a coil spring 25 whose upper part is inserted and fixed in a barlike projection of the intermediate handle 30. When the intermediate handle 30 is turned for an equipment body 1, the opening and closing body 24 is inverted and turned by the action of the coil spring 25 so that a movable contact 29 of the opening and closing body 24 comes into contact with and leaves a fixed contact of a second terminal plate 21. An operation handle 40 attached to an upper part of the intermediate handle 30 is formed in such a way that a projection image of an upper face of the equipment body 1 has substantially the same dimension as an upper face of a boss part 10. The operation handle 40 becomes large, its operation becomes easy, and it can be attached to a mounting frame or the like while the operation handle 40 is attached thereto so that the arrangement work on a construction face becomes easy and the appearance is satisfactory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch provided with an operation handle that can be rotated freely and embedded in a construction surface such as a wall.

[0002]

2. Description of the Related Art Conventionally, by operating an operation handle rotatably provided by exposing an operation surface from an upper surface of a body, a contact opening / closing mechanism mounted in the body is operated to operate a contact. As a switch that opens and closes, there is a switch of a large-sized continuous wiring device standardized by Japanese Industrial Standards (JIS) (see JIS C 8304).
The switch A 'is mounted on a mounting frame 50 (see JIS C 8375) of a large-sized continuous wiring device as shown in FIG. 16 and embedded in a mounting hole provided on a construction surface such as a wall surface. The operation handle 82 is exposed from the opening 81a on the upper surface of the boss 81 of the body 80.

The conventional switch A 'has a body 80 composed of a body 80a formed of a synthetic resin in a substantially box shape and a cover 80b attached to the opening side of the body 80a. A boss portion 81 is protrudingly provided substantially at the center of the upper surface. The body 80a and the cover 80b are connected by a metal assembly frame 13. Assembly frame 13 is main piece 1
Legs 13b, 13b are respectively suspended from both ends of 3a to form a substantially U-shape as a whole.
The tip of 3b is forked. Then, as shown in FIG. 16, the assembly frame 13 is attached so as to straddle the cover 80b with the body 80a fitted on the cover 80b, and the two leg pieces 13b, 13b of the assembly frame 13 are attached to both sides of the body 80a and the cover 80b. Are fitted in the grooves 83, 84 provided in the body 80a, the forked end is expanded, and is hooked and locked to the end of the groove 83 of the body 80a, so that the body 80a and the cover 80b are joined. A pair of locking claws 14, 1 is provided on the main piece 13a of the assembly frame 13.
4 and a substantially square-shaped rising piece 15 having an engagement hole 15a.
Are provided.

On the other hand, the mounting frame 50 is formed of a metal material in the shape of a rectangular frame having a mounting window 51 at the center, and box screws for mounting to the embedding box are inserted into both side pieces 52 facing in the longitudinal direction. A long hole 53 and a screw insertion hole 5 into which a screw for directly attaching to a construction surface such as a wall surface is inserted.
4, a scissor fitting locking hole 55 for locking a scissor fitting used when attaching to a wall panel or the like forming a construction surface;
A screw hole 56 into which a mounting screw 69 described later is screwed is provided. The rising pieces 15 of the assembly frame 13 are provided on the side frame pieces 57a and 57b facing each other in the longitudinal direction with the mounting window 51 interposed therebetween.
Engaging claws 58a, 5 which engage with the engaging holes 15a provided in the
8b are provided respectively. One of the side frame pieces 57
In b, the engaging claw 58b is supported from both sides by a thin supporting piece 59. That is, when the switch A 'is mounted on the mounting frame 50, the engaging claw 58a of the side frame piece 57a is firstly engaged with the engaging hole 15a of the switch A', and the other side using a tool such as a screwdriver. By pressing and bending the supporting piece 59 of the frame piece 57b toward the mounting window 51, the engaging claw 58b is engaged with the engaging hole 15a of the switch A ', and the switch A' is mounted on the mounting frame 50. . The mounting frame 50 is provided with three sets of engaging claws 58a and 58b so that three switches A 'can be mounted side by side in a direction perpendicular to the longitudinal direction. The mounting frame is not limited to the metal frame, but may be a synthetic resin frame. In the case of a synthetic resin frame, a member protruding laterally from the assembly frame 13 of the switch A 'is used. A locking hole for locking the locking claw 14 is provided.

As described above, the plate frame 60 and the decorative plate 7 are provided in front of the mounting frame 50 on which the switch A 'is mounted.
0 (see JIS C 8316). That is, the mounting screw 69 is inserted into the screw insertion hole 61 a provided in the mounting piece 61 of the plate frame 60, and the mounting screw 69 is provided in the screw hole 56 provided in both side pieces 52 of the mounting frame 50.
The plate frame 60 is attached to the mounting frame 50 by screwing.

On the front surface of the plate frame 60, a synthetic resin having an insulating property (a thermoplastic resin such as an ABS resin or a thermosetting resin having elasticity) like the plate frame 60 is provided.
Thereby, a decorative plate 70 formed in a substantially box shape is attached. In the four corners of the plate frame 60, there are provided decorative plate locking holes 62 for locking locking projections (not shown) protruding from the rear surface of the decorative plate 70. The decorative plate 70 can be removably attached to the front side of the plate frame 60 by inserting and locking the locking projections into the holes 62. Then, as shown in FIG. 17, the upper surface of the boss 81 of the switch A 'is exposed from the opening 71 provided in the decorative plate 70 so that the operation handle 82 can be operated.

[0007]

However, in the above conventional example, the operation handle 8 is placed on the upper surface of the boss 81 of the container body 80.
2 has a problem that it is difficult to operate the operation handle 82 because the exposed area is small. In contrast, the mounting frame 50
Although there is a switch using an operation handle having a size larger than the mounting window 51, the body cannot be mounted on the mounting frame 50 with the operation handle attached, and after the body is mounted on the mounting frame 50. The problem is that complicated operations such as attaching the operating handle to the body become necessary, or the turning angle (reversal angle) of the operating handle increases from the opening as the operating handle increases. There is also a problem that the number of exposed operation handles increases and the appearance of the operation handles deteriorates.

SUMMARY OF THE INVENTION An object of the present invention is to provide a switch which can easily operate an operation handle, can be easily arranged on a construction surface, and has a good external appearance. What you want to do.

[0009]

According to a first aspect of the present invention, there is provided a middle handle which is rotatably held on a body by exposing an upper portion of the body from the upper surface thereof, and First and second terminal portions housed in the body and electrically connected to an external electric wire, opening / closing means having a movable contact and rotating in a state of being electrically connected to the first terminal portion, and the middle handle A turning power applying means for holding an upper portion and a lower portion held by the opening / closing means and for applying a reversing turning power to the opening / closing means in response to the rotation of the middle handle; and the opening / closing means provided at the second terminal portion A fixed contact that contacts and separates from the movable contact in accordance with the rotation of the operating handle, an operation handle attached to the upper portion of the middle handle, and mounting means for mounting the body to a mounting frame of a large-sized continuous wiring device. The operation handle has a large-angle projection image on the upper surface of the body. The size of the handle is approximately the same as the upper surface of the boss part of the wiring device, and the operation handle is larger than before, making operation easier, and the mounting frame with the operation handle attached Can be easily mounted on the construction surface, and the pivot point of the operation handle can be provided at the top of the body. Appearance can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the operation handle is formed in a box shape having an open lower surface, and a locking piece projects from an inner bottom surface. A locking projection to be engaged is provided on a side surface of the middle handle, and in addition to the function of the invention of claim 1,
By pushing the operation handle toward the middle handle with the upper surface of the middle handle and the lower surface of the operation handle facing each other, the locking piece and the locking projection are engaged, and the operation handle can be attached to the middle handle with one touch.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the operation handle and the middle handle are formed of a thermoplastic resin and are melted by ultrasonic waves on one of the opposing surfaces thereof. The operation handle and the middle handle can be fixed by melting the projection, in addition to the function of the invention of claim 1 or 2, wherein the operation handle is a middle handle. From falling off.

[0012] The invention of claim 4 is the invention of claim 1 or 2 or 3.
In the invention, the first and second terminal portions are constituted by a terminal plate electrically connected to an external electric wire, and the fixed contact is provided on a terminal plate constituting the second terminal portion. In a so-called one-sided switch, the same operation as the first, second, or third aspect of the invention is achieved.

[0013] The invention of claim 5 is the first or second or third aspect of the present invention.
In the invention, the first and second terminal portions are constituted by a pair of terminal plates each electrically connected to an external electric wire, and each of the pair of terminal plates has a movable contact and constitutes the first terminal portion. The opening / closing means is constituted by a pair of opening / closing members which rotate while being in contact with the respective terminal plates, and the fixed contacts are provided on a pair of terminal plates constituting the second terminal portion, respectively. The movable contact and the fixed contact are brought into contact with and separated from each other in accordance with the rotation of the opening / closing body. The so-called double-cut switch has the same effect as the first, second, or third invention.

According to a sixth aspect of the present invention, there is provided the first or second or third aspect of the present invention.
In the invention, the second terminal portion is constituted by a pair of terminal plates each electrically connected to an external electric wire, and the opening / closing means has a pair of movable contacts, and the second terminal portion is The so-called three-way switch, wherein the fixed contacts are provided on a pair of terminal boards, respectively, and the movable contacts and the fixed contacts are brought into contact with and separated from each other in accordance with the rotation of the opening / closing body. The same operation as that of the first, second, or third invention is achieved.

[0015] The invention of claim 7 is the first or second or third aspect of the present invention.
In the invention, the first and second terminal portions are constituted by a pair of terminal plates each electrically connected to an external electric wire, and each of the pair of terminal plates has a movable contact and constitutes the first terminal portion. The opening / closing means is constituted by a pair of opening / closing members which rotate while being in contact with the respective terminal plates, and the fixed contacts are provided on a pair of terminal plates constituting the second terminal portion, respectively. The movable contact and the fixed contact are selectively contacted and separated according to the rotation of the opening and closing body,
A so-called four-way switch, comprising:
The same effect as that of the invention is achieved.

According to an eighth aspect of the present invention, in the fourth aspect of the present invention, the indicator lamp electrically connected between the terminal plates constituting the first and second terminal portions and the operation handle are provided. 5. A prism having at least a part fitted into a window hole, wherein an end of the prism faces an indicator light through a through hole provided in the middle handle. In addition, it is possible to inform the position of the operation handle by turning on the indicator lamp in a dark environment such as at night.

According to a ninth aspect of the present invention, in the sixth aspect of the present invention, an indicator light electrically connected between the pair of terminal plates constituting the second terminal portion, and a window hole provided in the operation handle. And a prism which is fitted at least partially into the middle handle, and wherein an end of the prism faces an indicator light through a through hole provided in the middle handle, in addition to the function of the invention of claim 6. In a situation where the surroundings are dark such as at night, the indicator lamp can be turned on to inform the position of the operation handle.

[0018]

(Embodiment 1) Embodiment 1 of the present invention will be described in detail with reference to FIGS. However, the same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

The body 1 of the switch A ₁ in the present embodiment
Is a body 1 made of a thermosetting resin such as a urea resin.
and a cover 1b made of a thermoplastic resin such as PBT (polybutylene terephthalate) and assembled to the body 1a. The body 1a and the cover 1b are joined by a metal assembly frame 13 as in the conventional example. ing.
In addition, this container 1 is formed in the module size of one large square continuous wiring device. The assembly frame 13 is composed of a main piece 13.
The leg pieces 13b, 13b are respectively suspended from both ends of "a" to form a substantially U-shape.
The tip of b is forked. Then, as shown in FIG. 2, the assembly frame 13 is attached so as to straddle the cover 1b with the body 1a fitted on the cover 1b, and the two leg pieces 13b, 13b of the assembly frame 13 are attached to both sides of the body 1a and the cover 1b. Are fitted in the grooves 2a and 2b provided in the body 1a, the forked end is expanded, and the body 1a is engaged with the end of the groove 2a of the body 1a so that the body 1a and the cover 1b are joined. The main piece of the assembling frame 13 is provided with a pair of locking claws 14, 14 and a substantially square-shaped rising piece 15 having an engagement hole 15 a.

Terminal storage portions 3 for storing terminals to be connected to external electric wires at both ends in the longitudinal direction of the body 1a.
And an opening / closing body 24 as opening / closing means in the center.
Is formed in the central storage section 4 for storing therein. These storage portions 3 and 4 are formed by partitioning the inside of the body 1a with a partition. A pair of electric wire insertion holes 5 for inserting external electric wires are provided on the bottom surface of each terminal portion storage portion 3 of the body 1a.
Release hole 6 for operating release button 27 forming a terminal portion
And are drilled. Since the body 1a is formed of urea resin having excellent tracking resistance, occurrence of tracking can be prevented.

In this embodiment, the terminal portion includes first and second terminal plates 20 and 21, a pair of lock springs 26 and a release button 27.
And a so-called quick-connecting terminal structure. Lock spring 26
Are bent at both ends of a strip of a conductive material having elasticity, and a locking piece 26a and a contact piece 26b are formed at both ends of a central piece 26c. The locking pieces 26a are connected to the central piece 26c and extend from the connecting portion to the distal end edge. The leg pieces 20a, 21 of the substantially U-shaped first and second terminal plates 20, 21 forming the terminal portion are provided.
The contact piece 26b is bent in a substantially S-shape. The center piece 26c is formed in a substantially flat plate shape, and the contact piece 20 of the first and second terminal plates 20 and 21 is formed.
b, 21b. Thus, the lock piece 2 of the lock spring 26
6a, the contact strip 26b, and the first and second terminal plates 20, 2
When an electric wire is externally inserted between the leg pieces 20a and 21a through the electric wire insertion hole 5 provided at the bottom of the body 1a, the tip of the locking piece 26a bites into the core of the electric wire to prevent it from falling off. And the lock piece 26a and the contact piece 26
b, the core wire of the electric wire is pressed into contact with the leg pieces 20a and 21a, so that the core wire of the electric wire and the first and second terminal plate contacts 2 are connected.
Conduction (connection) with 0 and 21 is achieved. Release button 2
Numeral 7 is made of a thermosetting resin such as urea resin, and each terminal section 3 of the body 1a is formed with the lower part facing the release hole 6.
Is stored in. When the release button 27 is pressed with the tip of a tool such as a screwdriver inserted from the outside through the release hole 6, the locking piece 26a of the lock spring 26 is pressed by the pressing pieces 27a projecting from both sides in the pressing direction. Then, the tip of the locking piece 26a is separated from the core wire of the electric wire to release the connection between the first or second terminal plate 20, 21 and the electric wire.

From the first terminal plate 20, a support piece 20c laid on the bottom surface of the central storage section 4 is extended, and the tip of the support piece 20c is bent into a mountain shape to form a support projection 20d. The opening / closing body 24 is rotatably mounted on the support projection 20d. The second terminal plate 21 is formed with an extension piece 21c extending from the central storage portion 4 and having a tip bent so as to be orthogonal to the longitudinal direction of the body 1a. A fixed contact 28 is formed on the extension piece 21c. It is stuck.

The opening / closing body 24 is formed in a U-shape which is opened upward by a metal member, and a pair of rotation restricting pieces 24a are protruded from both lower sides thereof.
The turning angle (reversal angle) is regulated by engaging a rib 4a protruding from the inner side surface of the body 1a between "a" and "a". A movable contact 29 is fixed to a portion of the opening / closing body 24 facing the fixed contact 28 of the second terminal plate 21.

The cover 1b has a boss 10 projecting from an upper surface thereof, and a frame 11 is formed substantially all over the boss 10. The dimensions of the boss portion 10 in the short width direction and the longitudinal direction are the same as those of the boss portion of the large square continuous wiring device as in the conventional example. In the frame portion 11, a middle handle 30 formed of a thermosetting resin such as urea resin and formed in a box shape having an open lower surface is accommodated. A substantially triangular rotating shaft 31 protrudes from the lower part of both sides of the middle handle 30, and a bar-like projection 32 for inserting and fixing the upper part of the coil spring 25 protrudes from the center of the inner bottom surface. . The coil spring 25 applies reverse rotation power to the opening / closing body 24 in accordance with the rotation of the middle handle 30, and the lower portion is housed in the opening / closing body 24, and is provided between the middle handle 30 and the opening / closing body 24. Interposed.

On the other hand, a bearing groove 12a is formed on the inner wall of a bearing portion 12 erected on both sides in the short width direction of the frame portion 11 of the cover 1b, and the rotating shaft 31 of the middle handle 30 is formed in the bearing groove 12a. It is fitted from below, and the middle handle 30 is
Is rotatably held. Here, a step portion 31a which is one step lower than the upper portion is provided below the turning shaft 31 of the middle handle 30, and when the turning shaft 31 is fitted into the bearing groove 12a, the bearing groove 12a By fitting the retaining dowel 12b projecting from the lower part to the step portion 31a, the middle handle 30 can be prevented from falling off.
A reverse assembling rib (not shown) protrudes above the stepped portion 31a of one of the rotary shafts 31, and a relief recess for allowing the reverse assembling rib to escape into the corresponding one of the bearing grooves 12a. (Not shown), it is possible to prevent reverse assembly of the middle handle 30 to the cover 1b.
Further, a tapered surface (not shown) inclined downward inward is provided at the upper end of the bearing groove 12a, and a taper surface 31c inclined downward outward at the upper end of the rotating shaft 31 of the middle handle 30. Is provided, the middle handle 30 is brought into contact with the tapered surfaces 31c so that the cover 1
b is prevented from coming off upward from the bearing portion 12.

When the middle handle 30 is rotated with respect to the body 1 with the rotation shaft 31 as a fulcrum, the opening and closing body 24 is actuated by the coil spring 25 compressed and housed in the body 1. Is rotated in reverse, and the movable contact 29 of the opening / closing body 24 can be brought into contact with and separated from the fixed contact 28 of the second terminal plate 21. The switch A ₁ of this embodiment turns on / off conduction between the first terminal plate 20 and the second terminal plate 21 by contacting and separating the fixed contact 28 and the movable contact 29. This is a so-called single-cut switch.

On the other hand, an operation handle 40 is attached above the middle handle 30. This operation handle 40 is ABS
Locking projections formed in a box shape with a lower surface opened by a thermoplastic resin such as resin, and the tips of locking pieces 41a and 41b protruding from the inner bottom surface are protruded from both longitudinal side surfaces of the middle handle 30. 33a, 33b to engage the middle handle 30.
It is attached so as to cover the upper part of. Opening edges of both side walls along the longitudinal direction of the operation handle 40 are formed in a mountain shape such that a central portion protrudes downward, and a bearing portion of the cover 1b is formed at an inner center of the side walls formed in the mountain shape. A recess 42 for letting out 12 is formed. The longitudinal end portions of the upper surface of the operating handle 40 (operating surface), or the outer peripheral shape is provided with a substantially elliptic projection 43, the state of the switch A ₁ (fixed contact 28 and the movable contact 29 is in contact Or whether they are separated) from the appearance.

Therefore, when the operation handle 40 is rotated, the middle handle 30 to which the operation handle 40 is attached can be rotated to turn the opening / closing body 24 upside down. A first terminal plate 20 electrically connected to the movable contact 29 through the fixed contact 2
8 can be turned on and off with respect to the second terminal plate 21 electrically connected to the second terminal plate 8. In addition, since the opening and closing body 24 is reversed by the two components of the middle handle 30 and the operation handle 40, the rotation fulcrum of the directly operated operation handle 40 can be moved upward as compared with the related art. it can. As a result, even when the operation handle 40 is enlarged, the protrusion of the operation handle 40 exposed from the upper surface of the boss portion 10 of the container 1 does not increase so much, and the appearance is improved as compared with the related art. There is an advantage that can be.

Also, as shown in FIG.
Numeral 0 indicates that the projected image on the upper surface of the boss 10 has a size substantially equal to the upper surface of the boss 10. Specifically, the dimension of the operation handle 40 in the short width direction is the boss portion 10.
The length in the short width direction (approximately 23 mm) of the (body 1) is set substantially equal to the length in the longitudinal direction (approximately 28 mm) of the boss 10. Thus, the operation handle 82 of the conventional switch A 'has a dimension in the short width direction set to a dimension (about 16 mm) shorter than the dimension in the short width direction of the body 1, and a dimension in the longitudinal direction is the boss. A dimension shorter than the longitudinal dimension of the part 82 (about 23 mm)
Was set to Therefore, in the present embodiment, the area (23 mm × 28 mm) of the operation surface of the operation handle 40 can be increased by about 75% compared to the area (16 mm × 23 mm) of the conventional operation handle 82.

[0030] Then, the switch A ₁ of the present embodiment is mounted to the mounting frame 50 of the large square chronic use wiring devices described in the conventional example as shown in FIGS. 5 and 6, and the plate frame on the front of the mounting frame 50 A plate consisting of a decorative plate 60 and a decorative plate 70 is provided and embedded in an embedding hole provided in a construction surface such as a wall surface. Here, since the size of the operation handle 40 is set to a size such that the projected image thereof is substantially the same size as the upper surface of the boss portion 10, the operation surface (upper surface) of the operation handle 40 is enlarged as compared with the conventional example. By doing so, the operability can be improved, and the operation handle 40 can be attached to the attachment frame 50 in a completed state in which the operation handle 40 is attached to the middle handle 30, so that there is an advantage that the installation work on the construction surface is facilitated.

By the way, as shown in FIG.
The projections 36 are provided at both ends in the longitudinal direction on the upper surface of the main handle 0, and the projections 36 are melted by irradiating ultrasonic waves from the outside with the operation handle 40 attached to the middle handle 30. Fix (heat)
The operation handle 40 may be prevented from falling off from the middle handle 30.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIG. The switch A ₁ ′ of the present embodiment includes:
The first embodiment is characterized by an assembly structure of a body 1a and a cover 1b constituting the body 1, and other configurations are common to the first embodiment. Therefore, common portions are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, assembling legs 16 having rectangular assembling holes 16a are formed vertically from four corners of the peripheral edge of the cover 1b, and assembling projections 17 projecting from both side surfaces of the body 1a are provided. It is characterized in that the body 1a and the cover 1b are integrally assembled by being inserted and locked in the assembly holes 16a of the assembly legs 16.

Here, a method of assembling the switch A ₁ ′ in the present embodiment will be briefly described. With the middle handle 30 attached to the cover 1b and the coil spring 25 fixed to the rod-shaped projection 32 of the middle handle 30, the tip of the assembly leg 16 of the cover 1b is attached to the assembly projection 1 of the body 1a.
When the cover 1b is pushed in from the opening side of the body 1a so as to cover the body 1a while being in contact with the upper surface of the assembly 7, the assembly legs 16 move along the guide surface 17a formed on the upper surface of the assembly projection 17. After expanding the diameter, the assembly leg 16
Gets over the assembling projections 17 and the assembling holes 16 a of the assembling legs 16.
Are inserted and locked in the assembly projections 17 so that the body 1a and the cover 1 are
b is assembled. Guide ribs 18 are provided between the assembly projections 17 on both sides of the body 1a to guide the assembly legs 16 of the cover 1b to the assembly projections 17 of the body 1a when the cover 1b is assembled to the body 1a. Therefore, assembly can be facilitated by bringing the assembly legs 16 into contact with both side surfaces of the guide ribs 18. In addition, by forming an inclined surface which is inclined downward toward the outside on the lower side surface of the assembly protrusion 17 and the lower edge of the assembly hole 16a,
The engagement between the assembly projection 17 and the assembly hole 16a can be prevented from being released by the spring force of the coil spring 25 housed in a compressed state. Then, the body 1a and the cover 1b
After assembling, the operation handle 40 is attached to the middle handle 30 to complete the switch A ₁ ′.

In this embodiment, the cover 1b is attached to the body 1a.
It is possible to assemble the body 1a and the cover 1b with a single touch simply by pushing the cover 1b in such a manner that the cover 1b is put on the body 1 as compared with the structure in which the body 1 is assembled using the assembly frame 13 as in the conventional example and the first embodiment. There is an advantage that assembly is easy. In this embodiment, since the assembly frame 13 is not used, a pair of locking claws 14 'are protrudingly provided on both side end surfaces facing the longitudinal direction of the cover 1b, for example, a mounting frame (not shown) made of synthetic resin. The above-mentioned locking claw 14 'is locked in the locking hole so that it can be attached to the mounting frame.

(Embodiment 3) Embodiment 3 of the present invention will be described with reference to FIG. Switch A ₁ in Embodiment ₁
Contrast but the is of the single switching type, the switch A ₂ in this embodiment is of a so-called double changeover type, portions which are common because the basic configuration is common with the switch A ₁ in Embodiment 1 Are denoted by the same reference numerals and description thereof is omitted.

The switch A ₂ of the present embodiment is different from the switch A _{1 of the first} embodiment in that each pair of the first terminal plates 2
0 ₁ , 20 ₂ , second terminal boards 21 ₁ , 21 ₂ , open / close body 2
4 _1, by providing the 24 ₂ and the coil spring 25, in that the two switching type. Each pair of the first terminal plate 20 _1, 20 ₂ and the second terminal plate 21 _1, 21
₂ is a terminal part storage part 3 ₁ formed by dividing the inside of the body 1a by an isolation wall 8 erected along the longitudinal direction.
To 3 ₄ are accommodated respectively with tablets spring 26. The opening and closing member 24 _1, 24 ₂ is contained in the two central housing portion 4 _1, 4 ₂ provided at a isolation wall 8. Incidentally, the release button 27 is housed between the side of the terminal portion housing portion 3 ₁ to 3 _4.

The first terminal plate 20 _1, 20 ₂ from the support piece 20c which is laid on the bottom of the first embodiment and the central housing portion 4 ₁ in the same manner, 4 ₂ Yes to extend, the support pieces 20c the tip of the support protrusion 20d formed bent in a mountain shape, are placed the support projections respectively on the 20d opening and closing member 24 _1, 24 ₂ rotatably. The second terminal plate 21 _1, 21 ₂ to also extend and bent so as to be orthogonal tip and extends in the central housing part 4 _1, 4 ₂ similarly to Embodiment 1 in the longitudinal direction of the body 1a piece 2
1c, and fixed contacts 28 ₁ , 2
8 ₂ are fixed.

The opening / closing members 24 ₁ and 24 ₂ are formed in the shape of a letter U which is opened upward by a metal member as in the first embodiment, and a pair of rotation restricting pieces 24a project from both lower sides, respectively. By engaging a rib 4a protruding from the inner surface of the body 1a between the rotation restricting pieces 24a, the rotation angle (reversal angle) is restricted. The opening and closing member 24 _1, 24 second terminal plate 21 of the _{2 1,} 21 ₂ of the stationary contacts 28 _1, 28 ₂ each of the parts movable contact 29 ₁ facing the, 29 ₂ are fixed.

On the other hand, a pair of rod-shaped projections (not shown) are provided on the inner bottom surface of the middle handle 30 so as to project therefrom. Then, the upper portions of the coil springs 25 ₁ , 25 ₂ are inserted and fixed to these rod-shaped projections, and the lower portions thereof are connected to the respective opening / closing members 24 ₁ , 2.
Coil springs 25 _1, 25 ₂ is interposed between the middle handle 30 and closing member 24 _1, 24 ₂ housed 4 _2. An operation handle 40 is attached to the middle handle 30 as in the first embodiment.

Thus, the operation handle 40 is turned.
By rotating the middle handle 30 with respect to the body 1,
Each coil spring 25 compressed and housed in the housing 1
₁, 25_TwoOpening and closing body 24₁, 24_TwoTurns around
And each opening and closing body 24₁, 24 _TwoMovable contact 29₁, 29_TwoTo
Second terminal board 21₁, 21_TwoFixed contact 28₁, 28_TwoNiso
The first terminal plate 20 can be contacted and separated from each other.
₁And the second terminal plate 21₁, First terminal plate 20_TwoAnd the second end
Child board 21_TwoTo turn on / off the conduction between the terminal boards,
This is a double-sided switch.

Embodiment 4 Embodiment 4 of the present invention will be described with reference to FIG. Switch A in this embodiment
₃ is a pair of second terminal plates 2 with respect to the first terminal plate 20.
This is a so-called three-way switch that selectively conducts with either one of 11 ₁ ′ and 21 ₂ ′. The basic configuration is the same as that of the switch A _{1 in the first} embodiment. The description is omitted by attaching reference numerals.

The first terminal plate 20 has a support projection 20 at its tip.
d has the same structure as that of the first embodiment having the supporting piece 20c formed therein. The supporting piece 20c is accommodated in the terminal storing section 3 provided at one end of the body 1a.
The opening / closing body 24 is rotatably mounted on the support projection 20d by laying the c. One of the second terminal plates 21 ₂ ′ has an extension piece 21 c extending from the central storage portion 4 and having a tip bent at right angles to the longitudinal direction of the body 1 a. ; and a fixed contact 28 ₂ which is fixed to 21c, are housed in the other end one terminal portion provided on the side containing portion 3 ₂ 'of the body 1a. The other second terminal plate 21 ₁ ′ extends beyond the central storage portion 4 to the terminal portion storage portion 3, and has an extension piece 21 e formed by bending the tip toward the central storage portion 4.
When this is fixed to the extending piece 21e provided with a fixed contact 28 _1, it is housed in the other terminal portion housing portion 3 ₃ 'in which is provided on the other end side of the body 1a. That is, each second terminal plate 2
1 ₁ ', 21 _2' fixed contact 28 comprising _one, 28 ₂ are arranged opposite each other across the central housing part 4.

On the other hand, the opening / closing body 24 formed in a U-shape and accommodated in the central accommodating portion 4 has two second terminal plates 2.
1 ₁ ', 21 _2' each movable contact 29 ₁ to the portion facing the,
29 ₂ are fixed. Therefore, the opening and closing member while the movable contact 29 ₁ of 24 'to the stationary contact 28 ₂ and opposed, the other movable contact 29 ₂ second terminal plate 21 _1' second terminal plate 21 _second fixed contact 28 ₁ of Will be opposed.

If the middle handle 30 is rotated with respect to the body 1 by rotating the operation handle 40,
Each coil spring 25 compressed and stored in the body 1
Closing member 24 was rotated in the reverse direction by action of the fixed contacts of the movable contact 29 _1, 29 ₂ of the movable member 24 and the second terminal plate 21 ₁ 'and the fixed contact 28 ₁ of the second terminal plate 21 _2' 28 ₂ and the can be alternately contact and open apart, first the second terminal plate 21 ₁ relative to the terminal plate 20 ', 21 _2' to alternatively turn on and off the conduction of three-way switch Can be realized.

(Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to FIG. Switch A in this embodiment
_4, one of the first terminal plate 20 ₁ and the second terminal plate 21 ₂ "
And during the other of the first terminal plate 20 ₂ and the second terminal plate 2
This is a so-called four-way switch that selectively conducts between 1 ₂ ″ and a basic configuration of the switch A in the second embodiment.
₂ are the same as in FIG. _2, and the common parts are denoted by the same reference numerals and description thereof is omitted.

[0047] Each pair of the first terminal plate 20 _1, 20 ₂ and the second terminal plate 21 ₁ ", 21 _2", the terminal portion housing portion 3 ₁ which is formed is isolated from each other on both ends of the body 1a to 3 ₄ are accommodated respectively with tablets spring 26. Opening and closing body 2
4 _1, 24 ₂ are housed respectively in the body 1a 2 one central housing part 4 ₁ a central formed on, 4 _2. The release button 27
It is housed between the side of the terminal portion housing portion 3 ₁ to 3 _4.

A support piece 20c laid on the bottom surface of the central storage portions 4 ₁ and 4 ₂ extends from the first terminal plates 20 ₁ and 20 ₂ , and a support formed at the tip of the support piece 20c. Protrusion 20
Opening and closing bodies 24 ₁ and 24 ₂ are mounted on d in a rotatable manner. One of the second terminal plate 21 ₁ ", the central housing portion 4 ₂
And an extension piece 21c "formed by bending the distal end in a direction orthogonal to the longitudinal direction of the body 1a.
1c "; and a fixed contact 28 ₁ is fixed to, is contained within the terminal portion housing portion 3 ₃ one provided on the other end side of the body 1a. The other second terminal plate 21 _2" center extending piece 21e which is formed by bending the tip in the central housing part 4 ₁ side and extended to toward the terminal portion housing portion 3 ₁ beyond the housing portion 4 ₂ "
When, the extending piece 21e provided with a fixed contact 28 ₂ which is fixed to ", is housed in the other terminal portion housing portion 3 in ₄ provided on the other end side of the body 1a.

On the other hand, the central storage portion is formed in a U shape.
4₁, 4_TwoOpening / closing body 24 housed inside₁, 24_TwoTo
Are movable contacts 29 on the outer sides of both ends.₁₁, 29₁₂Passing
And 29_{twenty one}, 29_{twenty two}Is stuck. Therefore, the opening / closing body 24
₁One movable contact 29₁₁Is the second terminal plate 21_TwoFixing "
Contact 28_TwoAnd opening and closing body 24_TwoOne movable contact 29
_{Two Two}Is the second terminal plate 21₁Fixed contact 28₁Oppose
And

The operation handle 40 is rotated.
By rotating the middle handle 30 with respect to the body 1,
Each coil spring 25 compressed and housed in the housing 1
₁, 25_TwoOpening and closing body 24₁, 24_TwoTurns around
And each opening and closing body 24₁, 24 _TwoMovable contact 29₁₁, 29_{twenty two}
To the second terminal board 21₁", 21_TwoEach fixed contact 28₁,
28_TwoCan be contacted and separated alternately at the first end
Child board 20₁Terminal plate 21 for_TwoAnd the first
Terminal board 20_TwoTerminal plate 21 for₁And the continuity of
A four-way switch that can be selectively turned on and off can be realized.

Embodiment 6 Embodiment 6 of the present invention will be described with reference to FIG. Switch A ₅ of the present embodiment,
In the single-cut type switch similar to the switch A1 of the _first embodiment, the operation handle 40 is used in a dark environment such as at night.
Is a so-called firefly switch provided with an indicator light (neon lamp) for informing the position of. Therefore, the basic configuration of the switch is the same as that of the switch A1 in the _first embodiment, and therefore, the common components are denoted by the same reference numerals and the description thereof will be omitted, and only the features that are the features of the present embodiment will be described. I do.

In this embodiment, there is provided an indicator lamp block formed by electrically connecting one end of a neon lamp 100 and one end of a resistor 102 to a terminal plate (not shown) insert-molded on a mounting plate 104 made of synthetic resin. It is installed in the middle handle 30. A press-fit hole 104 is provided substantially at the center of the mounting plate 104.
The mounting plate 104 is fixed to the rod-shaped projection 32 by press-fitting the rod-shaped projection 32 of the middle handle 30 into the press-fitting hole 104a, and is mounted in the middle handle 30.
At this time, the neon lamp 100 and the resistor 102 are housed in the space around the bar-shaped projection 32 in the middle handle 30.

From one end of the mounting plate 104 in the longitudinal direction (the side facing the second terminal plate 21), the upper surface of the second terminal plate 21 is formed integrally with the terminal plate inserted into the mounting plate 104. A terminal piece 105 which comes into contact with and separates from the portion so as to be able to freely contact and protrude is protruded. A contact (not shown) is formed on the lower surface of the terminal piece 105. One terminal 102a of the resistor 102 is inserted into the rod-shaped protrusion 32 through a vertical groove (not shown) provided on the side surface of the rod-shaped protrusion 32. Then, the terminal 102a of the resistor 102 and the coil spring 25 are brought into contact with each other in the rod-shaped projection 32 in a conductive manner.

By the way, a window hole 44 is provided on the operation surface of the operation handle 40, and a prism 110 is provided in the window hole 44.
Are inserted. The prism 110 is formed of a translucent member such as polycarbonate, and transmits light emitted from the neon lamp 100 to the window 4 of the operation handle 40.
It works to lead outside from 4. The prism 110 includes a main part 112 whose side surface is obliquely cut, the protrusion 111 protruding from the upper surface of the main part 112, and a main part 1.
12 comprises a mounting portion 113 extending from the upper surface. A recess 1 having a shape substantially equal to the outer peripheral shape is formed on the upper surface of the protrusion 111.
11a is formed. Further, pin insertion holes 113a are formed at both ends of the mounting portion 113, respectively.

On the other hand, a mounting pin (not shown) which is inserted into a pin insertion hole 113a formed in the mounting portion 113 of the prism 110 is provided upright outside the window hole 44 on the bottom surface of the operation handle 40. is there. That is, these mounting pins are inserted into the respective pin insertion holes 113a, and the prism 110 is fixed to the operation handle 40 by crushing the tip of the mounting pin thermally or mechanically.

Although the description has been omitted in the first embodiment, the operation handle 40 is provided on the lower surface on one end side of the middle handle 30.
Is provided with a through hole 35 through which the main portion 112 of the prism 110 fixed to the through hole 35 is inserted. Then, when the operation handle 40 is attached to the middle handle 30, the prism 110 is inserted into the through hole 35 of the middle handle 30. As a result, the lower surface of the main portion 112 of the prism 110 is opposed to the neon lamp 100, and the light emitted from the neon lamp 100 is guided from the main portion 112 of the prism 110 to the protrusion 111, and is externally transmitted through the window 44 of the operation handle 40. Radiation.

The movable contact 29 of the opening / closing body 24 is
When the operation handle 40 is operated so as to be separated from the fixed contact 28 of the terminal plate 21 of the second terminal plate 21, the contact formed on the lower surface of the terminal piece 105 protruding from the end of the mounting plate 104 Power is supplied to the neon lamp 100 and the resistor 102 via the coil spring 25 which is in contact with the upper surface of the device and in contact with the opening / closing body 24, and the neon lamp 100 is turned on.

On the other hand, when the operating handle 40 is operated so that the movable contact 29 of the opening / closing body 24 comes into contact with the fixed contact 28 of the second terminal plate 21, the terminal 10
Since 5 is separated from the upper surface of the second terminal plate 21, the neon lamp 100 is turned off.

(Seventh Embodiment) A seventh embodiment of the present invention will be described with reference to FIG.

The switch A _{6 according to the} present embodiment is different from the switch A _{6 according} to the fourth embodiment.
Similar indicator of Embodiment 6 in three-way switch similar to the switch A ₃ (neon lamp) are those having a. Therefore, the basic configuration is omitted will be denoted by the same reference numerals portions common because it is common to switches A ₃ according to the fourth embodiment, portions having the corresponding functions in this embodiment as a switch only Description I do.

At substantially the center of the mounting plate 104 ', a press-fit hole 104 is provided.
a 'is formed, and the rod-shaped projection 32 of the middle handle 30 is press-fitted into the press-fitting hole 104a' so that the mounting plate 10
4 ′ is fixed to the rod-shaped projection 32 and housed in the middle handle 30. At this time, the neon lamp 100 and the resistor 102
Is stored in the space around the bar-shaped projection 32 in the middle handle 30. The contact portion on a lower surface which is electrically connected to the terminal plate of the mounting plate 104 'Yes to (not shown) is provided, each upper surface portion of the second terminal plate 21 contact portions of the pair _1, 21 ₂ Are elastically contacted with a pair of contacts 103 'whose bases are fixed. Therefore, the neon lamp 100 and resistor 102 are electrically connected to _two second terminal plate 21 _1, 21 of the pair. Thus, the switch A ₆ of the present embodiment is, for example, as shown in FIG.
As shown in FIG. 4, two units are connected to the load L and the AC power source AC.
It constitutes a road switch circuit. Here, FIG.
In this state, both switches A ₆ are energized and the AC power supply A
C, the power is supplied to the load L, but the neon lamp 100 of both switches A ₆ is not energized, and the neon lamp 100
Does not light. When the operation handle 40 of one of the switches A ₆ is operated to be inverted from the state of FIG. 14, the inverted switch A ₆ is switched as shown in FIG. 15, and both switches A ₆ are turned off. Although the load is not supplied to the load L due to conduction, the neon lamps 10 of both switches A ₆ are turned on.
0, power is supplied from the AC power supply AC, the neon lamp 100 is turned on, and the prism 11
The light of the neon lamp 100 is irradiated through the “0”.

[0062]

According to the first aspect of the present invention, the upper handle is exposed from the upper surface of the body and is rotatably held by the body. The middle handle is electrically connected to an external electric wire housed in the body. First and second terminal portions to be connected, opening / closing means having a movable contact and rotating in a state of conduction with the first terminal portion, and an upper portion held by the middle handle and a lower portion opened / closed by the middle handle A turning power applying means which is held by the means and applies a reversing turning power to the opening / closing means in response to the rotation of the middle handle; and a movable contact provided in the second terminal portion and in contact with / opening with the movable contact in response to the rotation of the opening / closing means. A fixed contact to be separated, an operation handle attached to an upper portion of the middle handle, and mounting means for mounting the body to a mounting frame of a large-sized continuous wiring device, wherein the operation handle is attached to an upper surface of the body. The projected image is almost the same size as the upper surface of the boss of the large-sized continuous wiring equipment. The operating handle is larger than before, making it easier to operate.In addition, the operating handle can be attached to a mounting frame or the like with the operating handle attached, making installation work on the construction surface easier. Since the rotation support of the operation handle can be provided at the upper part of the body, there is an effect that the appearance of the appearance can be improved without increasing the margin of the operation handle.

According to a second aspect of the present invention, the operating handle is formed in a box shape having an open lower surface, and has a locking piece protruding from an inner bottom surface. Since the projection is provided on the side surface of the middle handle, in addition to the effects of the first aspect, the upper handle of the middle handle and the lower face of the operation handle are opposed to each other, and the operation handle is pushed toward the middle handle to be locked. There is an effect that the operation handle can be attached to the middle handle with one touch by the engagement between the piece and the locking projection.

According to a third aspect of the present invention, the operation handle and the middle handle are formed of a thermoplastic resin, and one of the opposing surfaces is provided with a projection which is melted by ultrasonic waves. In addition to the effects of the first or second aspect of the present invention, the operation handle and the middle handle can be fixed by melting the projection, and the operation handle can be prevented from falling off from the middle handle. is there.

According to a fourth aspect of the present invention, the first and second terminal portions are constituted by a terminal plate electrically connected to an external electric wire, and the terminal plate constituting the second terminal portion is provided. Since the fixed contact is provided in the switch, the same effect as that of the first, second, or third aspect of the present invention can be achieved in a so-called single-cut switch.

According to a fifth aspect of the present invention, the first and second terminal plates are electrically connected to a pair of terminal plates, each of which is electrically connected to an external electric wire.
Are formed, each having a movable contact, and
The opening / closing means is constituted by a pair of opening / closing members which rotate in a state of being in contact with a pair of terminal plates constituting the terminal portions of the first and second terminal portions, respectively. A fixed contact is provided, and each movable contact and the fixed contact are brought into contact with and separated from each other in accordance with the rotation of each of the opening and closing members. Therefore, in a so-called double-cut switch, the same effect as the invention of claim 1 or 2 or 3 Can be played.

According to a sixth aspect of the present invention, the second terminal portion is constituted by a pair of terminal plates each electrically connected to an external electric wire, and the opening / closing means has a pair of movable contacts. The fixed contact is provided on each of a pair of terminal plates constituting the second terminal portion, and each movable contact and the fixed contact come into contact with and separate from each other according to the rotation of the opening / closing body.
In a road-type switch, the same effect as the first, second, or third aspect of the invention can be obtained.

According to a seventh aspect of the present invention, the first and second terminal plates are electrically connected to an external electric wire by a pair of terminal plates.
Are formed, each having a movable contact, and
The opening / closing means is constituted by a pair of opening / closing members which rotate in a state of being in contact with a pair of terminal plates constituting the terminal portions of the first and second terminal portions, respectively. 4. A so-called four-way switch, wherein a fixed contact is provided, and each movable contact and the fixed contact are selectively brought into contact with or separated from each other in accordance with the rotation of each of the opening and closing members. The same effect as described above can be obtained.

According to the present invention, at least a part of the indicator lamp electrically connected between the terminal plates constituting the first and second terminal portions and the window hole provided in the operation handle is provided. A prism to be fitted is provided, and the end of the prism is made to face an indicator light through a through hole provided in the middle handle. Therefore, in addition to the effect of the invention of claim 4, the surroundings are dark at night or the like. There is an effect that the position of the operation handle can be notified by turning on the indicator light below.

According to a ninth aspect of the present invention, there is provided an indicator lamp electrically connected between a pair of terminal plates constituting the second terminal portion,
7. The invention according to claim 6, further comprising a prism having at least a part fitted into a window hole provided in said operation handle, wherein an end of said prism is made to face an indicator light through a through hole provided in said middle handle. In addition to the effect of the above, there is an effect that the position of the operation handle can be notified by turning on the indicator lamp in a situation where the surroundings are dark such as at night.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment.

FIG. 2 is a perspective view showing a state in which the operation handle is removed.

FIG. 3 is a side sectional view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is an explanatory diagram for explaining an arrangement on a wall surface of the above.

FIG. 6 is an explanatory diagram for explaining an arrangement on a wall surface of the above.

FIG. 7 is a side sectional view showing a state where the operation handle is removed.

FIG. 8 is an exploded perspective view of the second embodiment.

FIG. 9 is an exploded perspective view of the third embodiment.

FIG. 10 is an exploded perspective view of the fourth embodiment.

FIG. 11 is an exploded perspective view of the fifth embodiment.

FIG. 12 is an exploded perspective view of the sixth embodiment.

FIG. 13 is an exploded perspective view of the seventh embodiment.

FIG. 14 is a circuit diagram of a three-way switch circuit using two switches of the above.

FIG. 15 is a circuit diagram of a three-way switch circuit in a state where the contacts are switched.

FIG. 16 is an exploded perspective view showing a conventional switch, mounting frame, and plate.

FIG. 17 is a perspective view showing a switch, a mounting frame, and a plate of the above.

[Explanation of symbols]

A ₁ switch 1 body 1a body 1b cover 20 first terminal plate 21 second terminal plate 24 opening and closing body 25 coil spring 26 lock spring 27 release button 28 fixed contact 29 movable contact 30 middle handle 40 operation handle

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Maki Kondo 1048 Kazuma Kadoma, Kadoma-shi, Osaka F-term in Matsushita Electric Works, Ltd. (reference)

Claims (9)

[Claims] 1. A middle handle which is rotatably held by exposing an upper portion from an upper surface of a body, and first and second handles which are housed in the body and electrically connected to external electric wires. 2 terminal portion, opening / closing means having a movable contact and rotating in a state of conduction with the first terminal portion, and an upper portion held by the middle handle and a lower portion held by the opening / closing means. A rotating power applying means for applying a reversing rotating power to the opening / closing means in accordance with the rotation, a fixed contact provided in the second terminal portion and in contact with / separating from the movable contact in accordance with the rotation of the opening / closing means; An operation handle attached to an upper portion of the middle handle; and mounting means for mounting the container on a mounting frame of the large-sized continuous wiring device. Formed to be approximately the same size as the top surface of the boss of the device A switch, characterized in that: 2. The operating handle is formed in a box shape with an open lower surface, and has a locking piece protruding from an inner bottom surface, and a locking projection that engages with the locking piece has a side surface of the middle handle. 2. The switch according to claim 1, wherein the switch is protruded. 3. The operation handle and the middle handle are formed of a thermoplastic resin, and a projection which is melted by an ultrasonic wave is protruded on one of the opposing surfaces thereof. Item 3. The switch according to item 1 or 2. 4. The first and second terminal portions are configured by a terminal plate electrically connected to an external electric wire,
The switch according to claim 1, 2 or 3, wherein the fixed contact is provided on a terminal plate constituting the second terminal portion. 5. The first and second terminal portions are each constituted by a pair of terminal plates electrically connected to an external electric wire, and each has a movable contact to constitute the first terminal portion. The opening / closing means is constituted by a pair of opening / closing members which rotate while being in contact with the pair of terminal plates, respectively.
The fixed contact is provided on each of a pair of terminal plates constituting the terminal portion, and each movable contact and the fixed contact come into contact with and separate from each other in accordance with the rotation of each of the opening and closing members. Or the switch according to 3. 6. The second terminal portion is constituted by a pair of terminal plates each electrically connected to an external electric wire, and the opening / closing means has a pair of movable contacts and the second terminal portion.
The fixed contact is provided on each of a pair of terminal plates constituting the terminal portion, and each movable contact and the fixed contact come into contact with and separate from each other in accordance with the rotation of the opening / closing body. 3. The switch according to 3. 7. The first and second terminal portions are constituted by a pair of terminal plates each electrically connected to an external electric wire, each having a movable contact, and constituting the first terminal portion. The opening / closing means is constituted by a pair of opening / closing members which rotate while being in contact with the pair of terminal plates, respectively.
The fixed contact is provided on each of a pair of terminal plates constituting the terminal portion, and each movable contact and the fixed contact are selectively brought into contact with or separated from each other in accordance with the rotation of each of the opening and closing members. Item 5. The switch according to item 1, 2, or 3. 8. An indicator light electrically connected between terminal plates constituting the first and second terminal portions, and a prism at least partially fitted into a window hole provided in the operation handle. 5. The switch according to claim 4, further comprising: an end of the prism facing an indicator light through a through hole provided in the middle handle. 9. An indicator lamp electrically connected between a pair of terminal plates constituting the second terminal portion, and a prism at least partially fitted into a window hole provided in the operation handle. 7. The switch according to claim 6, wherein an end of said prism faces an indicator light through a through hole provided in said middle handle.