JP2002170460A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch having a terminal device capable of holding an electric wire with a sufficient strength even if electric wires of different diameter and kind are connected. SOLUTION: Terminal devices 30a and 30b comprise annular terminal frames 100a and 100b fitted to an apparatus body 1, and a terminal screw 34 which connects and holds the electric wire guided into the terminal frames 100a and 100b through an electric wire insert hole 12 provided on the rear wall of the apparatus body 1 between the terminal frames 100a and 100b while screwed into a threaded hole 35 penetrating the peripheral wall of the terminal frames 100a and 100b. A counter sink 36 is formed at the outer circumferential part of the threaded hole 35 of the terminal frames 100a and 100b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch.

[0002]

2. Description of the Related Art Conventionally, in a wiring device such as a switch or an outlet or a lighting device, a terminal device called a quick connection terminal for connecting an electric wire introduced into a body through an electric wire insertion hole provided in the body. Is widely used. For example, in the switch shown in FIG. 42, a terminal plate 3 that is housed in the housing 1 and contacts the electric wire 2 introduced into the housing 1 through the electric wire insertion hole 12, and a lock that holds the electric wire 2 between the terminal plate 3 and the terminal plate 3. And a spring 4. The locking spring 4 is a leaf spring, and includes a contact piece 4a and a locking piece 4b provided on the locking spring 4.
It is formed so that the electric wire 2 is held by sandwiching the electric wire 2 between the terminal 2 and the terminal plate 3. That is, when the electric wire 2 is introduced into the housing 1 through the electric wire insertion hole 12 provided in the housing 1, the electric wire 2 connects the contact piece 4 a and the locking piece 4 b to the terminal plate 3.
The contact piece 4a and the lock piece 4
b, the electric wire 2 is connected to the terminal plate 3 and the locking pieces 4 by the spring force.
b. here,
In a state where the electric wire 2 is sandwiched between the terminal plate 3 and the contact piece 4a and the locking piece 4b, the edges of the contact piece 4a and the locking piece 4b elastically contact the electric wire 2, and the electric wire 2 is partially connected to the electric wire 2. The wire 4 is prevented from coming off by the lock piece 4b biting.

The above-mentioned switch is provided with a reversing handle 5 for covering the front surface of the reversing handle 50 on the front side of the reversing handle 50 mounted on the body 1 so as to be pivotally supported on the body 1.
An operation handle 60 having an operation surface area larger than that of the operation handle 60 is attached. On the rear surface of the operation handle 60, a connecting leg 61 is provided to be engaged with the connecting claw 53 provided on the reversing handle 50, and the front end (rear end) of the connecting leg 61 is engaged with the rear surface of the connecting claw 53. The leg claws 61a are formed, and the reversing handle 50 is held between the pressing projections 62 protruding from the rear surface of the operation handle 60 and the leg claws 61a. As a result, the operation handle 60 is fixed to the reversing handle 50. In addition,
When attaching the operation handle 60 to the reversing handle 50, as shown in FIG. 43, the operator operates the coupling claw 53 at the right end with the left end of the reversing handle 50 located behind (right below) the right end. After engaging the claw 61 a of the connecting leg 61 of the handle 60, the central portion of the operating handle 60 is pressed toward the body 1 and the connecting claw 53 of the left end of the reversing handle 50 is engaged with the connecting leg 61 of the operating handle 60. The leg claws 61a are engaged.

By the way, abutment ribs 25 projecting from the front surface of the body 1 are respectively protruded from both ends in the longitudinal direction of the body 1, and a pair of mounting claws 26 are provided on an outer surface of each abutment rib 25.
44, and holding grooves 87a, 87b provided in a plate frame 80 which is a mounting frame for wiring equipment as shown in FIG.
The body 1 can be held by the plate frame 80 by engaging with. Here, the contact rib 25 comes into contact with the back side of the contact portions 84d and 85d provided on the plate frame 80 when the container body 1 is attached to the plate frame 80, and the operation handle 60 is connected to the both contact ribs 25.
The gap formed between the body 1 and the operation handle 60 in the construction state is hardly visible from the outside.

Further, in the switch shown in FIG. 45, as a terminal device, a terminal plate 3 'which is housed in the housing 1 and comes into contact with the electric wire 2 introduced into the housing 1 through the electric wire insertion hole 12, and a terminal plate 3' Is provided with a terminal screw 5 inserted into the terminal screw 5 and a rectangular plate-shaped nut 6 screwed to the tip of the terminal screw 5. In this terminal device, the electric wire 2 is inserted into the body 1 through the electric wire insertion hole 12, and the terminal screw 6 is turned through the operation hole 7 provided on the side wall of the body 1 so as to tighten the terminal screw 6 with the tip of a flathead screwdriver. The distance between the nut 6 and the main piece 3a 'of the terminal plate 3' is reduced,
Are configured to be clamped.

[0006]

By the way, the terminal device used in the switch shown in FIG. 42 is intended to connect an electric wire whose core is a single wire, and when the core is a stranded wire. Has the problem that the effect of retaining the locking pieces cannot be sufficiently obtained. That is,
Using a terminal plate 3 in which the main piece 3a, which is a contact portion with the electric wire, is a flat plate as in the terminal plate 3 shown in FIG. When introduced, the wires constituting the stranded wire spread apart, so that the distance between the locking spring 4 and the main piece 3a of the terminal plate 3 becomes small, so that a sufficient contact pressure by the locking spring 4 cannot be obtained. However, there is a problem that the electric wires 2 fall off.

The terminal device used in the switch shown in FIG. 44 has a structure in which one wire having a single core wire is connected, and one wire having a stranded core wire is connected.
There is no problem when the same type of wires are connected in the same combination of element wire diameters, but the mating side that holds the wire 2 between the nut 6 and the nut 6 (that is, the nut 6 in the main piece 3a of the terminal plate 3 '). Are opposed to each other, for example, as shown in FIG.
When a combination of different diameter wires or different types of wires among the plurality of types of applicable wires shown in FIG. 6 is connected, the wires cannot be held with sufficient strength, and the wires fall off.

When the switch shown in FIG. 42 is mounted on a plate frame 80 as shown in FIG. 44, the operation handle 6 is mounted after the body 1 is mounted on the plate frame 80.
0 is attached to the reversing handle 50, but the plate frame 80
Both ends of the operation handle 60 attached to the reversing handle 50 of the container 1 attached to the body (left and right ends in FIG. 44)
There is a problem that the operation handle 60 cannot be removed and the device cannot be replaced because the gap between the contact portion 84d and 85d of the plate frame 80 is small.

The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a terminal device capable of holding electric wires with sufficient strength even when using different diameter electric wires and different types of electric wires in combination. To provide a switch.

[0010]

According to a first aspect of the present invention, there is provided a switch in which a terminal device integrally including a movable contact and a fixed contact constituting a contact device is housed in a housing. An annular terminal frame attached to the terminal frame, and a terminal screw that is screwed into a screw hole provided through the peripheral wall of the terminal frame to connect and hold the electric wire between the terminal frame and the terminal frame. The portion holding the wire between the terminal frame is characterized in that a cross-section along the opening surface of the terminal frame is formed with a holding surface that is curved so as to bulge away from the distal end surface of the terminal screw, A holding surface is formed in a portion of the terminal frame that sandwiches the electric wire between the terminal screw and the distal end surface of the terminal screw so that a cross section along the opening surface of the terminal frame expands in a direction away from the distal end surface of the terminal screw. So, the core wire is a single wire, Regardless of the size or type, such as wire is Ri line, since the electric wire even when using in combination different radial electric lines and different wire can be held with sufficient strength,
For example, various connections, such as connecting an electric wire having a single core wire and an electric wire having a stranded core wire to one terminal frame at the same time, connecting two electric wires having a single core wire to one terminal frame, and the like. It can correspond to the form.

According to a second aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members: a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein. A wire stopper piece for regulating the insertion depth of the wire is provided integrally with the screw-side terminal plate, and the contact holding piece holding the fixed contact is extended from the receiving-side terminal plate. Since it is provided at the tip of the connecting piece,
Since the insertion depth of the wire is regulated by the wire stopper provided integrally with the screw-side terminal plate, for example, when the insertion length of the wire is too long, the connecting piece and the contact holding piece are not affected by the wire. The position of the fixed contact can be prevented from being shifted, and the screw-side terminal plate and the receiving-side terminal plate are caulked and connected, so that even if the terminal screws are tightened, the screw-side terminal plate can be secured. Since the wire is hardly deformed and strong against the tightening of the terminal screw, the wire can be held firmly as a result.

According to a third aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members: a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein. The screw-side terminal plate has a counter sink integrally formed on the outer periphery of the screw hole,
In addition, since the wire stopper piece that regulates the insertion depth of the wire is integrally formed and formed into a shape that can be coupled to the receiving terminal plate regardless of the shape of the contact holding piece provided with the fixed contact, Regardless of the shape of the contact holding piece of the receiving-side terminal plate, the screw-side terminal plate can be shared, and the cost can be reduced by sharing the components. In addition, since the countersink is provided in the screw hole into which the terminal screw is screwed, the amount of screwing between the terminal frame and the terminal screw can be increased as compared with the case where the countersink is not provided, and the terminal screw is firmly fixed. As a result, the electric wire can be held firmly.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the screw-side terminal plate is provided with a projecting piece projecting laterally from both side edges around the counter sink, and the receiving-side terminal plate is provided with Since the positioning hole into which the overhanging piece is inserted is provided, the screw side terminal plate can be temporarily fixed to the receiving side terminal plate using the overhanging piece and the positioning hole at the time of assembling the terminal frame. The connection work between the side terminal plate and the receiving side terminal plate becomes easy, and the strength of the counter sink can be increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members: a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein. And a contact holding piece holding the fixed contact is provided at a distal end of a connecting piece extending from the receiving terminal plate, and a pair of projecting pieces sandwiching a rib protruding from an inner surface of the body. Is provided on the connection piece, so that the terminal frame can be prevented from rattling due to the reaction force of the electric wire when the terminal screw is tightened, and the position of the fixed contact can be prevented from shifting, so that a stable contact pressure can be obtained. It is possible to obtain.

According to a sixth aspect of the present invention, in the first aspect of the present invention, there is provided a reversing handle mounted on the body so as to be pivotably supported on the body to open and close the contact device. The terminal frame is formed by joining two members of a screw-side terminal plate having the screw hole penetrating therethrough and a receiving-side terminal plate having the holding surface formed therein, A wire stopper piece that regulates the insertion depth of the wire is provided integrally with the screw-side terminal plate, and mounting protrusions are protruded from both side edges of the wire stopper piece. The contact and the screw-side terminal plate are connected by engaging the mounting projection with the engaging portion provided on the extension piece extended from the contact piece, and the mounting projection projects from the wire stopper piece toward the contact closer to the contact. The indicator light is The contacts the energizing path can be easily coupled with the screw terminal board during assembly.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the container has a box shape, and comprises a synthetic resin body having a front opening and a cover disposed on the front side of the body. A pair of assembling projections are provided on both sides in the width direction of the body so as to be separated from each other in the longitudinal direction of the body, and an assembling tongue is provided to project rearward from a rear edge of the cover, and provided on the assembling tongue. The body and the cover are joined by the assembly projections engaging with the assembled assembly holes, and the width of the assembly projections in the longitudinal direction of the body is made different on both sides of the body, so that the cover and the body can be easily assembled during assembly. Can be combined with
Moreover, the reverse assembly of the cover and the body can be prevented.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the container has a box shape, and includes a synthetic resin body having a front opening, and a cover disposed on the front side of the body. A pair of assembling projections are provided on both sides in the width direction of the body so as to be separated from each other in the longitudinal direction of the body, and an assembling tongue is provided to project rearward from a rear edge of the cover, and provided on the assembling tongue. The body and the cover are coupled by the assembly projections engaging with the assembled holes, and a rib is provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction,
The other side is provided with a concave portion in which the rib is fitted, and the width of the rib is made different at both ends, so that the cover and the body can be easily coupled at the time of assembly, and further, the reverse assembly of the cover and the body is prevented. be able to.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, a rib is provided at one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and a concave portion into which the rib fits is provided at the other. Since the widths of the ribs are different in the portions, the reverse assembly of the cover and the body can be more reliably prevented.

According to a tenth aspect of the present invention, in the first aspect of the invention, there is provided a reversing handle mounted on the body so as to be pivotally supported by the body to open and close the contact device. An operation handle detachably attached to the front side, and an attachment portion for attaching to a mounting frame for an embedded wiring device, for detaching the operation handle from the reversing handle while being attached to the mounting frame. Since the notch is provided at the rear end edge of the operation handle, the tip of a flathead screwdriver or the like is inserted into the notch even when the body is attached to the mounting frame and the operation handle is attached to the inversion handle. The operation handle can be detached from the inversion handle by applying a force in a direction in which the operation handle is detached from the inversion handle.

According to an eleventh aspect of the present invention, in the invention of the tenth aspect, a reverse assembling prevention rib for restricting the mounting direction of the operation handle to the reversing handle only in a prescribed direction on each of the opposing surfaces of the operation handle and the reversing handle. , The mounting direction of the operation handle with respect to the reversing handle can be restricted, and reverse assembly of the operation handle with respect to the reversing handle can be prevented.

According to a twelfth aspect of the present invention, in the tenth aspect of the present invention, a mark indicating the mounting direction of the operation handle is displayed on the opposing surfaces of the operation handle and the reversing handle. The direction of mounting the handle can be easily checked.

According to a thirteenth aspect of the present invention, in the tenth aspect of the present invention, the outer shape of the container in the short direction is formed in a rectangular frame shape having a window in the center, and two to three in one direction. The mounting frame for the embedded wiring device provided with a set of device mounting means is formed in a size that can be continuously connected to the number of sets of the device mounting means of the mounting frame, and the operation handle is provided with the window hole. It is formed in a size enough to cover the opening surface on the front side with two pieces, and when the one direction is the left and right direction, the reversing handles are detachable on both left and right sides, so two sets of equipment are mounted in the one direction. The operation handle can be shared by the mounting frame provided with the means and the mounting frame provided with the three sets of instrument mounting means, and the cost is reduced as compared with a case where a dedicated operation handle is prepared for each mounting frame. Can be achieved.

According to a fourteenth aspect of the present invention, in the tenth aspect of the present invention, a connecting leg is provided on a rear surface of the operation handle to be engaged with a part of a flange formed on the reversing handle. In the reversing handle, since the guide groove for guiding the connecting leg is provided on the flange piece, the connecting leg is guided along the guiding groove when the operation handle is mounted on the reversing handle. The operation of mounting the operation handle is facilitated.

According to a fifteenth aspect, in the thirteenth aspect, the reversing handle is provided with an indicator light, and a lens for guiding light of the indicator light to a display portion of the operation handle is provided on a rear surface of the operation handle. Since the lens is formed so as to straddle a portion corresponding to the indicator light on each of the left and right sides, the lens is formed to have a size that covers two front opening surfaces of the window hole. Even when the reversing handle is attached to either of the left and right sides of the operation handle, the light of the indicator lamp can be guided to the display section of the operation handle.

According to a sixteenth aspect of the present invention, in the tenth aspect of the present invention, a mounting hole for inserting a box screw for mounting the mounting frame in an embedding box in which the mounting frame is embedded in a construction surface is formed. In the operating handle, a relief portion formed of a concave portion for preventing interference of a box screw is provided at a rear end edge of both side walls in a short direction of the body in a state where the body is mounted on the mounting frame. Since the escape handle is provided on the operation handle with a recess for preventing interference of the box screw when the body is mounted on the mounting frame, the box screw is operated when the operation handle is operated. Interference with the operation handle can be avoided.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) As shown in FIGS. 1 to 3, a switch of the present embodiment is formed in a rectangular parallelepiped synthetic resin molded body 10 having an open front surface and a rectangular frame shape. And a cover 20 of a synthetic resin molded product joined to the front side of the body 10. A pair of assembling protrusions 11 are provided on both outer side surfaces in the width direction of the body 10 so as to be spaced apart from each other in the longitudinal direction of the body 10, and an assembling tongue piece 21 extends rearward from a rear edge of the cover 20. The assembling protrusions 11 are inserted into the assembling holes 21a provided in the assembling tongue pieces 21.
Are engaged with each other, so that the body 10 and the cover 20 are coupled.

In this embodiment, the width of the assembly protrusion 11 on one outer surface (the lower surface of FIG. 6B) of the body 10 shown in FIG.
Assuming that the width of the assembly protrusion 11 on the other outer surface of the first member 0 (the upper surface in FIG. 6B) is W2, W1 and W2 are different from each other (that is, the width of the assembly protrusion 11 in the longitudinal direction of the body 10). Are different on both outer surfaces of the body 10). On the other hand, the width W1 'of the assembling hole 21a in the assembling tongue piece 21 formed on the same plane as the one outer surface (the upper surface in FIG. 6A) of the cover 20 shown in FIG. The width W2 'of the assembly hole 21a in the assembly tongue piece 21 formed on the same plane as the other outer surface (the lower surface in FIG. 6A) of the cover 20 shown in FIG.
2 and a width slightly larger than W2, W1
W2 'and W1' are different from each other in the same manner as in the case of. Therefore, the reverse assembly of the cover 20 and the body 10 during assembly can be prevented.

Further, as shown in FIG.
A rib 27 protruding rearward is formed along the width direction of the cover 20 on the rear surface side at both ends in the longitudinal direction of the body 10, and as shown in FIG. The recesses 16 for positioning the ribs 27 at the time of assembly are formed on the front side at both ends of the cover 20. The width of the ribs 27 at one longitudinal end (left end in the drawing) of the cover 20 is W3. When the width of the rib 27 at the other end (the right end in the figure) is W4, W3 and W
4, the reverse assembly of the cover 20 and the body 10 during assembly can be prevented.

The body 10 has two terminal devices 30a and 30b for connecting the electric wire 2 inserted into the body 1 through the electric wire insertion hole 12 provided in the rear wall of the body 10, and the terminal device 3
A contact device 40 that opens and closes an electric path between Oa and 30b is housed. On the other hand, a reversing handle 50 made of a synthetic resin product is mounted on the opening window 22 at the center of the cover 20 so as to be swingable with respect to the cover 20. The contact device 40 is opened and closed. On the front side of the reversing handle 50, an operation handle 60 (see FIG. 15) of a synthetic resin molded product overlapping the front surface of the cover 20 is detachably connected. The contact device 40 is opened and closed by swinging of the contact device 50.

A terminal device 30 is provided on the inner surface of the body 10.
A plurality of holding grooves 14 (see FIG. 3) and a plurality of holding ribs 13 for positioning the a, 30b and the contact device 40 are formed. The terminal devices 30a and 30b are the body 1
0, and the contact device 40 is disposed in the central portion of the body 10 in the longitudinal direction.

The terminal devices 30a and 30b are composed of annular terminal frames 100a and 100b attached to the body 1 and terminal frames 10a and 100b.
The terminal frame 1 is screwed into a screw hole 35 penetrating through the peripheral wall of the terminal frame 1a, 100b and through the wire insertion hole 12 provided in the rear wall of the body 1.
00a and 100b are connected to the terminal frame 100.
a and 100b, and a terminal screw 34 for connection and holding. In other words, the terminal devices 30a and 30b screw the terminal screws 34 into the screw holes 35 formed through the annular terminal frames 100a and 100b, and
a and the terminal frames 100a and 100b, the wires are mechanically held and electrically connected.

In the terminal frames 100a and 100b, a counter sink 36 is formed by burring on the outer periphery of the screw hole 35. Therefore, the terminal frame 100
In FIGS. 10A and 10B, the counter sink 36 is provided in the screw hole 35 into which the terminal screw 34 is screwed.
The amount of screwing between the terminal screws 34a and 100b can be increased, and the terminal screws 34 can be firmly tightened.

In the terminal frames 100a and 100b, a section along the opening surface of the terminal frames 100a and 110b is provided at a portion where the electric wire is held between the distal end surface 34a of the terminal screws 34 (see FIGS. 1 and 8). The holding surfaces 31b and 32b are formed so as to be curved so as to bulge away from the distal end surface of the holding member 34.

The terminal frames 100a and 100b are provided with screw holes 35.
Screw-side terminal plates 33, 33 having through holes and the holding surface 31
b, 32b on the receiving side terminal plate 31, 32 formed with
It is formed by joining members. Here, since the screw-side terminal plate 33 is shared in the both terminal frames 100a and 100b, the cost can be reduced.
The screw-side terminal plates 33, 33 and the receiving-side terminal plate 3
The reference numerals 1 and 32 are formed by bending a sheet metal.

As shown in FIG. 10, the screw side terminal plates 33, 33 are formed in an L-shape, and a main piece 33a in which a screw hole 35 and a counter sink 36 are formed, and a main piece 33a.
and a wire stopper piece 33b that is substantially orthogonal to a and controls the insertion depth of the wire. That is, as shown in FIG.
The insertion depth of the wire 2 is regulated by the tip of the wire 2 abutting on the wire stopper piece 33b.

On the other hand, the receiving-side terminal plate 31 is provided on both sides of the holding groove 14 provided on the inner peripheral surface of the operation groove 15 near one longitudinal end (left end in FIG. 3) of the body 10. Main piece 31a into which projection 33c (see FIG. 11) is inserted and held
And a contact holding piece 31d, which is disposed at a central portion in the longitudinal direction of the body 10 and to which the fixed contact 41 is fixed, and a body that connects the front edge of the main piece 31a and the front edge of the contact holding piece 31d continuously and integrally. And connection pieces 31c and 32c extending along the opening surface of the ten. That is, the receiving terminal plate 3
Reference numeral 1 denotes a fixed contact 4 which is extended from the connecting piece 31c and is provided at the tip.
1 is extended obliquely rearward (downward in FIG. 2) toward the center in the longitudinal direction of the body 10.

The receiving terminal plate 32 is provided on the holding surface 3.
A support piece 32d extends from the rear end edge of the main piece 32a having the U-shaped cross section 2b formed along the rear surface of the body 10 toward the center in the longitudinal direction of the body 10, and the support piece 32d
A fulcrum projection 32e bent in a letter shape is formed at the tip of the. The rear surface of the central piece 43a of the switching element 43 formed of a U-shaped conductive plate abuts on the fulcrum projection 32e.

The contact device 40 is formed in a U-shape and has an opening / closing element 43 in which the rear surface of the central piece 43a contacts the fulcrum projection 32e.
It has. The opening / closing element 43 has side pieces 43b and 43c extending from both end edges of the center piece 43a.
It is arranged so as to be swingable around the center of the body 10 in the longitudinal direction of the body 10. The center of the body 10 is the body 1
The holding ribs 13 protrude from the inner surfaces of both side walls in the width direction of 0, and the movement of the opening / closing element 43 in the width direction of the body 10 is restricted by the ribs 13. Switching element 4
A projection 43d is protruded from a side edge of the third side piece 43b, and the swing range of the opening / closing element 43 is regulated by the projection 43d coming into contact with the holding rib 13.

The switching element 43 is provided with the above-mentioned contact holding piece 31d.
A movable contact 42 is provided on one side piece 43b so as to be in contact with and separate from the fixed contact 41 provided on the contact holding piece 18d. That is, the opening / closing element 43 is connected to the fulcrum projection 3
2e, the movable contact 42 comes into contact with and separates from the fixed contact 41, and the terminal device 30a and the terminal device 30
b and a state in which they are electrically connected to each other are selected. In short, the contact device 40 of the present embodiment constitutes a contact of a single-pole switch (so-called single-cut switch) having one fixed contact 41 and one movable contact 42 and used for single-pole single-throw. A reversing spring 44 composed of a coil spring is held between the opening / closing element 43 and the reversing handle 50, and one end of the reversing spring 44 is connected to the central piece 4 of the opening / closing element 43.
It is housed in a space surrounded by 3a and both side pieces 43b and 43c, and the other end is housed in a reversing handle 50.

The reversing handle 50 in the width direction of the body 1
A fulcrum projection 51 is provided on both sides of the
Is formed in a shape in which a front end portion is tapered. A pair of bearing projections 23 projecting forward from the periphery of the opening window 22 at the center in the longitudinal direction of the cover 20 and on both sides in the width direction.
The bearing recess 24 into which the fulcrum projection 51 of the reversing handle 50 is inserted is formed on the facing surface of the two bearing projections 23. The bearing recess 24 pivotally supports the fulcrum projection 51 at least at the front end. The operation handle 60 is provided on both end surfaces in the longitudinal direction of the reversing handle 50.
The coupling claws 53 for coupling to each other are protruded.

At both ends in the longitudinal direction of the cover 20, contact ribs 25 projecting from the front surface of the cover 20 along both side edges of the cover 20, respectively. Each pair of mounting claws 26 protrudes. Although not described in detail here, the mounting claws 26 are provided to hold the body 1 to the mounting frame by engaging with mounting holes provided in the mounting frame for the wiring device. When the construction is performed in a form in which a part of the body 1 is embedded, the work of connecting the body 1 to the mounting frame fixed to the construction surface is facilitated. The contact rib 25 comes into contact with the rear surface of the mounting frame when the body 1 is mounted on the mounting frame. The operation handle 60 is arranged between the two contact ribs 25, and the operation handle 60 is formed so as not to interfere with the contact rib 25 when swinging. Thus, the contact rib 25 is attached to the cover 2.
0, and the attachment claw 26 is provided on the contact rib 25, so that the operation handle 60 can be located rearward as compared with a case where the contact rib 25 is not provided. The gap formed between the gap 60 and the outside is hardly seen from the outside.

The operation handle 60 covers the front surface of the reversing handle 50 as shown in FIG.
On the rear surface, a connecting leg 61 that engages with a connecting claw 53 provided on the reversing handle 50 protrudes. At the front end (rear end) of the connection leg 61, a leg claw 61a is formed to engage with the rear surface of the connection claw 53, and a reversing handle 50 is provided between the pressing protrusion 62 provided on the rear surface of the operation handle 60 and the leg claw 61a. Is held, and as a result, the operation handle 60 is fixed to the reversing handle 50.

However, the operation of the above-described switch will be briefly described. When the right end of the reversing handle 50 is located behind (left below) the left end of the reversing handle 50 as shown in FIG. The portion expands to the left from both ends, and the movable contact 42 is pressed against the fixed contact 41 by the reversing spring 44 to apply a contact pressure. On the other hand, when the left end of the operation handle 60 (not shown) is pushed backward from this state, the front end of the reversing spring 44 moves to the right, so that the reversing spring 44 is rapidly expanded after being compressed, and the middle portion is at both ends. The switching element 43 is tilted rightward to separate the movable contact 42 from the fixed contact 41 at this time.

The above-described wire insertion hole 12 is formed at a portion of the terminal frames 110a, 100b corresponding to between the screw-side terminal plates 33, 33 and the receiving-side terminal plates 31, 32. When the terminal screw 34 is tightened in a state where the electric wire 2 is inserted into the housing 1, the distal end portion of the electric wire 2 is connected to the distal end surface 34 a of the terminal screw 34 and the receiving terminal plates 31 and 32.
Of the main pieces 31a, 32a, and the holding surfaces 31b, 32b of the main pieces 31a, 32a, the electric wire 2 comes into contact with the main pieces 31a, 32a, and the terminal devices 30a, 30b and the electric wire 2 are electrically connected. It is mechanically held so as not to fall out of the case 1.

Operation grooves 15 are formed on both side walls in the longitudinal direction of the body 10 at positions corresponding to the terminal frames 100a and 100b. The operation groove 15 has a shape such that a tool such as the tip of a flathead screwdriver can be inserted into the body 1. When the tool is inserted into the operation groove 15 and the terminal screw 34 is tightened, the tip surface of the terminal screw 34 34a is the receiving terminal plate 31,
The main pieces 31a, 31b of the thirty-two approach the holding surfaces 31b, 32b. Conversely, when the tool is inserted into the operation groove 15 and the terminal screw 34 is loosened with the electric wire 2 connected to the terminal devices 30a and 30b, the holding surface 31b is moved so that the distal end surface 34a of the terminal screw 34 is separated from the electric wire 2. , 32b is increased and the mechanical holding of the electric wire 2 is released.
Can be pulled out of the body 1.

The terminal devices 30a, 30 in the present embodiment
As the electric wire connected to b, a stranded wire or a single wire can be used, and it can correspond to various connection forms. For example, as shown in FIG. 8, a core wire 2a of a single core wire and a strand 2 of a stranded wire are used.
b can be connected at the same time, or two single-core wires 2a can be connected at the same time, as shown in FIG. 9, for example. Here, the tip surface 34a of the terminal screw 34
Holding surfaces 31b, 3 of receiving side terminal plates 31, 32 facing the
2b is arc-shaped, the stranded wire 2b is connected to the terminal screw 3
4 between the terminal surface 34a and the terminal plate 31 so that the wire 2b does not spread.

The gap between the inner peripheral surfaces of the terminal frames 100a and 100b and the side surfaces of the terminal screws 34 is a stranded wire 2b.
Is smaller than the diameter of the terminal frame 34. When the wire 2b is sandwiched between the distal end surface 34a of the terminal screw 34 and the holding surfaces 31b, 32b, the wire 2b is connected to the terminal frames 100a, 100b.
Terminal screw 34 between the inner peripheral surface of the
The wire 2b is prevented from breaking when the terminal screw 34 is tightened.

The main piece 33a of the screw terminal plate 33
As shown in FIG.
11d and 33d are formed apart from each other in the insertion direction of the electric wire, and the main pieces 31a and 32a of the receiving-side terminal plates 31 and 32 have coupling holes 38 at portions corresponding to the coupling projections 33d and 33d (FIG. 11).
And figure). In the main piece 33a of the screw-side terminal plate 33, an overhanging piece 33c protruding laterally from both side edges around the counter sink 36 is provided, and the main pieces 31a, 32a of the receiving-side terminal boards 31, 32 are stretched. A positioning hole 37 (see FIG. 11) into which the projection 33c is inserted is provided. In the main piece 33a of the screw-side terminal 33, the pair of coupling projections 33d, 33d are located on both sides of the overhanging piece 33c in the wire insertion direction.
The projecting dimension of c is set longer than the projecting dimension of the coupling projection 33d.

Here, the process of assembling the terminal frame 100a will be described.
As shown in FIG. 11 (a), 1a has an enlarged front end side, and receives a part of the projecting piece 33c of the screw terminal plate 33 from this opened state as shown in FIG. 11 (b). The screw terminal plate 33 is temporarily fixed to the receiving terminal plate 33 by being inserted into the positioning hole 37 of the main piece 31a of the side terminal plate 31 (FIG. 1).
2), and thereafter, as shown in FIG. 11 (c), the distal end side is brought close (closes the main piece 31a) so that the main piece 31a of the receiving-side terminal plate 31 becomes U-shaped, so that it protrudes. Piece 33
c into the positioning hole 37 and the coupling projection 33
Then, the screw-side terminal plate 33 and the receiving-side terminal plate 31 are connected by crimping the leading end of the connecting protrusion 33d. In the terminal frame 100b, the screw-side terminal plate 33 is a common part with the terminal frame 100a, and the shape of the main piece 32a of the receiving-side terminal plate 32 is substantially the same as the shape of the main piece 31a. Can be assembled in the same process as the terminal frame 100a.

Thus, when assembling the terminal frames 100a and 100b, the screw-side terminal plate 33 can be temporarily fixed to the receiving-side terminal plates 31 and 32 by using the projecting pieces 37 and the positioning holes 38. And the receiving terminal plates 31 and 32 can be easily connected. Moreover, the projecting piece 37 is attached to the screw-side terminal plate 33.
Is provided, the strength of the counter sink 36 can be increased.

By the way, in the terminal frame 100a of this embodiment, as shown in FIG. 7, the above-described wire stopper piece 33b is provided integrally with the screw-side terminal plate 33, and the contact holding piece 31d holding the fixed contact 41 is received. It is provided at the tip of a connecting piece 31 c extending from the terminal plate 31. On the other hand, FIG.
Contact holding piece 31d holding fixed contact 41 as shown in FIG.
May be provided at the end of the connecting piece 31c extending from the screw terminal plate 33, but in the configuration shown in FIG. 13, when the insertion length of the electric wire 2 is too long, the connecting piece 31c is deformed and the fixed contact The position of 41 may be shifted.
As shown in FIG. 14, the main piece 3 of the screw-side terminal plate 33 is provided.
A configuration in which the main piece 3a is sandwiched between the main pieces 31a of the receiving terminal plate 31 and the wire stopper pieces 33b are extended from the main piece 33a is also conceivable. However, the configuration shown in FIG. In such a case, when the terminal screw 34 is tightened, there is a problem that the main piece 31a is deformed as shown by a two-dot chain line in FIG.

On the other hand, in the terminal frame 100a of this embodiment,
Since the insertion depth of the electric wire 2 is regulated by the electric wire stopper piece 33b provided integrally with the screw side terminal plate 33, for example, when the insertion length of the electric wire is too long, the connecting piece 31c or the contact holding piece 31d is not used. Fixed contact 4 unaffected by electric wire 2
1 can be prevented from shifting, and since the two members of the screw-side terminal plate 33 and the receiving-side terminal plate 31 are caulked and connected, even if the terminal screw 34 is tightened, the screw-side terminal plate 33 can be prevented. Since the wire 33 is not easily deformed and resistant to the tightening of the terminal screw 34, the wire 2 can be held firmly as a result.

In order to mount the above-described switch device on a construction surface such as a wall surface, a plate 9 shown in FIGS. 25 and 26 is used. The plate 9 includes a plate frame 80 as a mounting frame for holding the body 1 and a decorative plate 90 covering the plate frame 80.

The plate frame 80 is made of synthetic resin and has an insulating property. The left and right ends of a pair of upper and lower frame pieces 83a and 83b are connected to each other by a horizontal piece 82 so as to be continuously operated. It is formed in a rectangular frame shape having an opening window 81 as a rectangular window hole for exposing the front surface of the handle 60 at the center. A strip-shaped fixed beam portion 84 (see FIG. 15) and a movable beam portion 85 (see FIG. 15) are provided on the rear surfaces of both side edges along the longitudinal direction of the opening window 81 so as to face each other. .

On one surface of the fixed beam portion 84 and the movable beam portion 85 facing the opening window 81, there is provided a pair of mounting means 26 for engaging and disengaging with a pair of mounting claws 26 projecting from each side of the body 1. The holding grooves 87a and 87b as individual mounting holes (FIG. 15)
Are provided at equal intervals. Therefore, the mounting claw 26
Is engaged with the holding grooves 87a and 87b, the body 1 can be attached to the plate frame 80 with the front surface of the operation handle 60 exposed from the opening window 81. Also, to prevent the body 1 from dropping forward from the plate frame 80,
At the bases of the fixed beam portion 84 and the movable beam portion 85, a contact portion 8 that comes into contact with a contact rib 25 protruding from the cover 20 of the container 1.
4d and 85d (see FIG. 15) are formed. That is, the front surfaces of the contact ribs 25 of the body 1 are in contact with the contact portions 84d and 85d.
d, and the rear surface of the mounting claw 26 is held by the holding grooves 87a, 87b.
The body 1 is attached to the plate frame 80. Here, each of the distal ends of the fixed beam portion 84 and the movable beam portion 85 on one surface facing the opening window 81 has a body 1.
The mounting claw 26 is held in the holding groove 87 from the rear side of the plate frame 80.
a, 87b, each mounting claw 26 is held in the holding groove 87.
The guide portions 87c and 8 are inclined surfaces that are inclined so that the distance from each other increases toward the distal end in order to guide the guide members 87a and 87b.
7d is provided.

However, in order to mount the switch body 1 on the plate frame 80, the body 1 is inserted from behind the plate frame 80 and the mounting claws 26 projecting from one longitudinal side of the body 1 are fixed. When the body 1 is pushed forward with respect to the plate frame 80 while being engaged with the holding groove 87 a of the beam 84, the mounting claw 26 projecting from the other side of the body 1 is moved by the movable beam 8.
5 can be bent, and the mounting claw 26 can be easily engaged with the holding groove 87b.

On the other hand, the base of the fixed beam portion 84 is provided with an instrument removal hole 84c penetrating through the front and back of the plate frame 80 between each pair of adjacent holding grooves 87a. In the state where the jig is attached to the jig, a tip of a screwdriver or a jig dedicated to disassembly is inserted into the instrument removing hole 84c, and the body 1 is pushed toward the movable beam portion 85 by the tip of the jig. The movable beam portion 55 can be bent by an appropriate force, and the holding groove 87a on the fixed beam portion 84 side and the mounting claw 2 of the body 1 are attached.
6 can be released to detach the body 1 from the plate frame 80.

Incidentally, the plate frame 80 is fixed to the fixed beam portion 84.
And two pairs of holding grooves 87a and 87 in the movable beam portion 85, respectively.
b, the body 1 has a pair of mounting claws 26 on each side. The distance between the mounting claws 26 provided on the body 1 is determined by the distance between the holding grooves 87 adjacent to the fixed beam portions 84 and the movable beam portions 85.
1 and 87b, and the dimensions are set so that up to two pieces of the body 1 shown in FIG. 1 can be attached to the plate frame 80 described above. That is, the plate frame 80 shown in FIGS.
For individual use, the body 1 can be attached to up to two plate frames 80 for two. Therefore, the container 1 having such dimensions is referred to as a unit 1 having unit dimensions.

By defining the relative mounting dimensions of the container 1 and the plate frame 80 as described above, the plate frame 80 can be provided with an arbitrary number of unit-sized units 1 in the range of one to two. It becomes possible to be attached.

In order to mount the plate frame 80 on which the body 1 is mounted to a wall surface or the like, each horizontal piece 82 of the plate frame 80 is mounted on an embedding box (not shown) embedded in the wall surface. An extension piece 82a provided with a box hole 88a through which a box screw 110 is inserted is provided. Also, the frame pieces 83a, 8 of the plate frame 80
3b is provided with a screw insertion hole 88b through which a screw for directly attaching the plate frame 80 to a construction surface such as a wall surface is inserted.

Further, at the four corners of the plate frame 80, there are provided decorative plate locking holes 89 for locking locking projections (not shown) projecting from the rear surface of the decorative plate 90. The decorative plate 90 can be removably attached so as to cover the front surface of the plate frame 80 by inserting and locking the locking projection into the hole 89.

The decorative plate 90 is formed using a synthetic resin having an insulating property.
Is formed in a substantially box shape in which a rectangular front plate 91 covering the front surface of the front plate 91 and a side wall 92 projecting rearward from the periphery of the front plate 91 over the entire periphery are formed continuously and integrally. The above-described locking projection for coupling to the plate frame 80 is provided on the rear surface side of the front plate 91.
It protrudes from the corner. In the center of the front plate 91, an opening window 91a for exposing the front surface (operation handle 60) of the container 1 attached to the plate frame 80 is provided.

The distance between the opposing surfaces of the side wall 92 of the decorative plate 90 is larger than the width of the corresponding portion of the plate frame 50. That is, when the decorative plate 90 is attached to the front side of the plate frame 80 disposed on the construction surface, the plate frame 80 fits inside the decorative plate 90, and the rear edge of the side wall 92 of the decorative plate 90 is positioned on the construction surface. Almost abut. As a result, the abutting surface of the plate frame 80 and the decorative plate 90 does not protrude forward from the construction surface, and the abutting line of the two is hardly seen from the side surface, and the appearance is improved.

By the way, as shown in FIGS. 24 and 25, the front side of the opening
26 (hereinafter, referred to as two operation handles 60), or as large as one covering the front side of the opening window 81 as shown in FIG. The handle (hereinafter, referred to as a single operation handle 60) can be attached to the reversing handle 50.

Here, each operation handle 60 has
A relief portion 668 composed of a concave portion for preventing interference of the box screw 110 in a state where the container 1 is mounted on the plate frame 80 is provided (see FIG. 21). Thus, the operation handle 60
It is possible to prevent the box screw 110 from interfering with the operation handle 60 during the operation of.

Each operating handle 60 is provided with a notch 65 for detaching the operating handle 60 from the reversing handle 50 while being attached to the plate frame 80.
At the rear edge. Here, the notch 65 is provided at a position corresponding to the coupling leg 61 described above. Even when the body 1 is attached to the plate frame 80 and the operation handle is attached to the reversing handle, a notch such as a flathead screwdriver is provided in the notch. Insert the distal end, and turn the operating handle 60
The operation handle 60 can be detached from the reversing handle 50 by applying a force in a direction away from the reversing handle 50.

As shown in FIGS. 18 and 20,
Reverse assembly preventing ribs 55 for restricting the mounting direction of the operation handle 60 to the reversing handle 50 only in a prescribed direction on each of opposing surfaces of the operation handle 60 and the reversing handle 50,
68, the mounting direction of the operation handle 60 with respect to the reversing hand 50 can be restricted.
Can be prevented from being reversely assembled with the operation handle 60. Further, arrows 57 and 67, which are marks indicating the mounting direction of the operation handle 60, are displayed on the opposing surfaces of the operation handle 60 and the reversing handle 50, so that the mounting direction of the operation handle 60 to the reversing handle 50 is changed. It can be easily confirmed (visible).

In the reversing handle 50, the coupling claw 53 serving as a flange is provided with a guide groove 53a for guiding the leg claw 61a of the coupling leg 61. Therefore, the reversing handle 50
Of the connecting leg 61 when the operation handle 60 is attached to the
Since a is guided along the guide groove 53a, the operation of attaching the operation handle 60 to the reversing handle 50 becomes easy.

By the way, the body 1 is mounted on a plate frame 80 shown in FIG. 27 provided with three sets of instrument mounting means so that three bodies having the same external dimensions as the body 1 can be connected in series. Can also be attached. In other words, the body 1 is formed in a rectangular frame shape having an opening 81 as a window in the center in the width direction (transverse direction), and is provided with two or three sets of fixtures in one direction. The mounting frame for the embedded wiring device is formed in such a size that it can be continuously connected up to the number of the device mounting means of the mounting frame.

The two operation handles 60 are formed in such a size that the two opening surfaces on the front side of the opening window 81 are covered with the two operation handles. Here, two operating handles 6
As shown in FIGS. 22 to 24, a pair of connecting legs 61 are provided on both left and right sides so that the reversing handle 50 can be attached to and detached from both left and right sides when the one direction is the left and right direction. Thus, the operation handle 60 can be shared by the mounting frame provided with two sets of instrument mounting means and the mounting frame provided with three sets of tool mounting means in one direction. The cost can be reduced as compared with the case where the operation handle 60 is prepared.

(Embodiment 2) In this embodiment, a single-pole, double-throw switch (so-called three-way switch) will be described below.
In the three-way switch, as shown in FIGS. 28 and 29,
Three terminal devices 30b, 30c, 30d are used. The terminal device 30b has the same configuration as that of the single-pole single-throw switch according to the first embodiment, and the terminal device 3b used for the single-pole single-throw switch is used.
Two terminal devices 30c and 30d are used instead of 0a.
The terminal devices 30c and 30d are respectively connected to the terminal frames 100c and
100d, and each terminal frame 100c, 100d includes a screw-side terminal plate 33 and receiving-side terminal plates 45, 46 in the first embodiment.
It is formed in the same manner as described above. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The receiving terminal plates 45 and 46 are connected to the terminal screws 34.
Holding surface 45b for holding the electric wire between the end surface 34a of the
Main pieces 45a, 46a on which 46b (see FIG. 30) are formed
And connection pieces 45c, 46c continuously and integrally extended from the front edges of the main pieces 45a, 45b, and contact holding pieces 45d, 46d extending from the connection pieces 45c, 46c and having fixed contacts 41a, 41b provided at the distal ends, respectively. Are provided.

Contact holding piece 4 of both terminal devices 30c, 30d
The tips of 5d and 46d are arranged so as to face each other, and the fixed contacts 41a and 41b face each other. The switching element 43 includes movable contacts 42a and 42b on both sides in the thickness direction.
Each movable contact 42a, 42b selectively contacts 1b. That is, the movable contact 42 is connected to the fixed contact 41a.
While the contact a is in contact, the movable contact 42b becomes the fixed contact 41b.
The movable contact 42a is separated from the fixed contact 41a while the movable contact 42b is in contact with the fixed contact 41b.

Since the distance between the main piece 46a and the contact holding piece 46d of the receiving terminal plate 46 of the terminal device 30d is relatively large, as shown in FIG.
A pair of protruding pieces 4 that sandwich the holding rib 13 from the side edge of 6c
6e protrudes. For this reason, it is possible to prevent the terminal frame 100d from rattling due to the reaction force of the electric wire when the terminal screw 34 is tightened, and to prevent the position of the fixed contact 41b from shifting, so that a stable contact pressure can be obtained. become. When a receiving-side terminal plate 46 as shown in FIG. 32 without the protruding piece 46e is used, the contact holding piece 46d is lifted forward (in the direction of the arrow in the figure) by the reaction force of the electric wire. There is a risk that it will.

The terminal devices 30c and 30d are arranged on the same side (left side in FIG. 30) in the longitudinal direction of the body 10, and the body 10 has an operation groove 15 corresponding to the terminal screw 34 of the terminal device 30c and 30d. Is formed.

By the way, as shown in FIGS. 33 and 34, a position indicating lamp 71 made of a neon lamp is arranged, and a light for transmitting the light from the position indicating lamp 71 is transmitted to one end of the reversing handle 50 in the longitudinal direction. The one provided with the hole 52 may be used. It should be noted that the position indicating lamp 71 is shown in FIGS.
7 is inserted between the terminal device 30a and the terminal device 30b via a contact 47 made of a metal plate having a shape as shown in FIG.

In such a case, the contact 4 made of a conductive metal plate is attached to the electric wire stopper piece 33b of each screw side terminal plate 33.
7 may be combined. Each contact 47 is provided with elasticity so as to elastically contact the circuit board on which the position indicating lamp 71 is mounted.
Is always in elastic contact with the circuit board. A series circuit of a position indicator lamp 71 and a resistor (not shown) is mounted on the circuit board, and a contact 47 is provided at each end of the series circuit.
Contact. This type of three-way switch is often used for turning on and off stair lights, and three switches are provided on the upper and lower floors, respectively.
By arranging a road switch, lighting and extinguishing of the stair light can be operated both upstairs and downstairs.
Therefore, if a series circuit of the position indicating lamp 71 and the resistor is inserted between the fixed contacts 41a and 41b, the position indicating lamp 71 can be turned on when the stair lamp is turned off. The connection relationship of this type of circuit is well known, and therefore the description is omitted. Other configurations of the three-way switch are the same as those of the single-pole / single-throw switch.

Here, the contact 47 has a pair of extending pieces 48 extending rearward from both side edges at one end in the longitudinal direction, and mounting projections projecting from both side edges of the above-described wire stopper piece 33b. The contact 47 and the screw-side terminal plate 33 are coupled by the engagement of the 33e with the engagement groove 49 provided in the extension piece 48. Here, the contact 47 is attached to the mounting projection 33e.
Since the inclined surface 33f is formed so that the projecting amount from the wire stopper piece 33b decreases toward the side, the contact 47 serving as a current supply path to the position indicating lamp 71 is assembled at the screw side terminal plate 3 at the time of assembly.
3 can be easily combined.

When the reversing handle 50 provided with the position indicating lamp 71 is used, the operation handle 60 is
As shown in FIGS. 33 to 35, a lens 64 for guiding the light of the position indicator lamp 71 to the display 63 of the operation handle 60 may be provided on the rear surface of the operation handle 60. Here, the lens 64 is the reversing handle 5
It is formed in such a size that a part thereof overlaps with the position indicating lamp 71 even when 0 is attached to either of the left and right positions (that is, it is formed so as to span a portion corresponding to the position indicating lamp 71). So that two operating handles 6
At 0, the light of the position indicating lamp 71 can be guided to the display 63 of the operation handle 60 regardless of whether the reversing handle 50 is attached to either of the left and right sides in the left and right direction.

Incidentally, the terminal devices 30a, 30b, 30
In FIGS. 38 to 41, the positioning holes 37 and the coupling holes 38 are provided in the main pieces 31a, 32a, 45a, and 46a so that the screw-side terminal plate 33 can be shared. Therefore, cost reduction can be achieved.

[0081]

According to the first aspect of the present invention, there is provided a switch in which a terminal device integrally including a movable contact and a fixed contact which constitutes a contact device is housed in a housing, and the terminal device is an annular device mounted on the housing. And a terminal screw that is screwed into a screw hole provided through the peripheral wall of the terminal frame to connect and hold the electric wire between the terminal frame and the terminal frame. The holding surface is formed at a portion where the terminal frame is held, the holding surface being curved so that a cross section along the opening surface of the terminal frame expands in a direction away from the distal end surface of the terminal screw. Since the cross section along the opening surface of the terminal frame is formed so that the cross section along the opening surface of the terminal frame is curved so as to bulge away from the distal end surface of the terminal screw, the core wire is a single wire, Diameter and type of wire, etc. whose core wire is a stranded wire Regardless, even when a combination of different-diameter electric wires and different-type electric wires is used, the electric wires can be held with sufficient strength. For example, in one terminal frame, a single-core electric wire and a single-core stranded electric wire are used. Are connected at the same time, it is possible to cope with various connection forms, such as a case where two electric wires each having a single core wire are connected to one terminal frame.

According to a second aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members: a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein. A wire stopper piece for regulating the insertion depth of the wire is provided integrally with the screw-side terminal plate, and the contact holding piece holding the fixed contact is extended from the receiving-side terminal plate. Since it is provided at the tip of the connecting piece,
Since the insertion depth of the wire is regulated by the wire stopper provided integrally with the screw-side terminal plate, for example, when the insertion length of the wire is too long, the connecting piece and the contact holding piece are not affected by the wire. The position of the fixed contact can be prevented from being shifted, and the screw-side terminal plate and the receiving-side terminal plate are caulked and connected, so that even if the terminal screws are tightened, the screw-side terminal plate can be secured. Since it is hardly deformed and strong against the tightening of the terminal screw, there is an effect that the wire can be held firmly as a result.

According to a third aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members: a screw-side terminal plate having the screw hole formed therethrough and a receiving-side terminal plate having the holding surface formed therein. The screw-side terminal plate has a counter sink integrally formed on the outer periphery of the screw hole,
In addition, since the wire stopper piece that regulates the insertion depth of the wire is integrally formed and formed into a shape that can be coupled to the receiving terminal plate regardless of the shape of the contact holding piece provided with the fixed contact, Regardless of the shape of the contact holding piece of the receiving-side terminal plate, the screw-side terminal plate can be shared, and the cost can be reduced by sharing the components. In addition, since the countersink is provided in the screw hole into which the terminal screw is screwed, the amount of screwing between the terminal frame and the terminal screw can be increased as compared with the case where the countersink is not provided, and the terminal screw is firmly fixed. Therefore, there is an effect that the electric wire can be firmly held as a result.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the screw-side terminal plate is provided with projecting pieces projecting laterally from both side edges around the counter sink, and the receiving-side terminal plate is provided on the receiving-side terminal plate. Since the positioning hole into which the overhanging piece is inserted is provided, the screw side terminal plate can be temporarily fixed to the receiving side terminal plate using the overhanging piece and the positioning hole at the time of assembling the terminal frame. There is an effect that the work of connecting the side terminal plate and the receiving side terminal plate becomes easy, and the strength of the counter sink can be increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the terminal frame has two members, a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein. And a contact holding piece holding the fixed contact is provided at a distal end of a connecting piece extending from the receiving terminal plate, and a pair of projecting pieces sandwiching a rib protruding from an inner surface of the body. Is provided on the connection piece, so that the terminal frame can be prevented from rattling due to the reaction force of the electric wire when the terminal screw is tightened, and the position of the fixed contact can be prevented from shifting, so that a stable contact pressure can be obtained. There is an effect that it becomes possible to obtain.

According to a sixth aspect of the present invention, in the first aspect of the present invention, there is provided a reversing handle mounted on the body so as to be pivotally supported on the body to open and close the contact device, and a reversing handle. The terminal frame is formed by joining two members of a screw-side terminal plate having the screw hole penetrating therethrough and a receiving-side terminal plate having the holding surface formed therein, A wire stopper piece that regulates the insertion depth of the wire is provided integrally with the screw-side terminal plate, and mounting protrusions are protruded from both side edges of the wire stopper piece. The contact and the screw-side terminal plate are connected by engaging the mounting projection with the engaging portion provided on the extension piece extended from the contact piece, and the mounting projection projects from the wire stopper piece toward the contact closer to the contact. The indicator light is There is an effect that the energizing path to become contacts can be easily coupled with the screw terminal board during assembly.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the container has a box shape and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body. A pair of assembling projections are provided on both sides in the width direction of the body so as to be separated from each other in the longitudinal direction of the body, and an assembling tongue is provided to project rearward from a rear edge of the cover, and provided on the assembling tongue. The body and the cover are joined by the assembly projections engaging with the assembled assembly holes, and the width of the assembly projections in the longitudinal direction of the body is made different on both sides of the body, so that the cover and the body can be easily assembled during assembly. Can be combined with
Moreover, there is an effect that the reverse assembly of the cover and the body can be prevented.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the container has a box shape, and comprises a synthetic resin body having a front opening and a cover disposed on the front side of the body. A pair of assembling projections are provided on both sides in the width direction of the body so as to be spaced apart from each other in the longitudinal direction of the body. The body and the cover are coupled by the assembly projections engaging with the assembled holes, and a rib is provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction,
The other side is provided with a concave portion in which the rib is fitted, and the width of the rib is made different at both ends, so that the cover and the body can be easily coupled at the time of assembly, and further, the reverse assembly of the cover and the body is prevented. There is an effect that can be.

According to a ninth aspect of the present invention, in the seventh aspect of the present invention, a rib is provided at one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and a concave portion is provided at the other end for fitting the rib. Since the widths of the ribs are different in the portions, there is an effect that the reverse assembly of the cover and the body can be more reliably prevented.

According to a tenth aspect of the present invention, in the first aspect of the present invention, a reversing handle mounted on the body so as to be pivotally supported on the body to open and close the contact device; An operation handle detachably attached to the front side, and an attachment portion for attaching to a mounting frame for an embedded wiring device, for detaching the operation handle from the reversing handle while being attached to the mounting frame. Since the notch is provided at the rear end edge of the operation handle, the tip of a flathead screwdriver or the like is inserted into the notch even when the body is attached to the mounting frame and the operation handle is attached to the inversion handle. There is an effect that the operation handle can be detached from the inversion handle by applying a force in a direction in which the operation handle is detached from the inversion handle.

According to an eleventh aspect of the present invention, in accordance with the tenth aspect of the present invention, the reverse assembling prevention rib for restricting the mounting direction of the operation handle to the reversing handle only in a prescribed direction on each of the opposing surfaces of the operation handle and the reversing handle. Is provided so that the mounting direction of the operation handle with respect to the reversing handle can be regulated, and the reverse operation of the operation handle with respect to the reversing handle can be prevented.

According to a twelfth aspect of the present invention, in the tenth aspect of the present invention, a mark indicating the mounting direction of the operation handle is displayed on the opposing surfaces of the operation handle and the reversing handle. There is an effect that the mounting direction of the handle can be easily confirmed.

According to a thirteenth aspect of the present invention, in the tenth aspect of the present invention, the outer dimension of the container in the short direction is formed in a rectangular frame shape having a window in the center, and two to three in one direction. The mounting frame for the embedded wiring device provided with a set of device mounting means is formed in a size that can be continuously connected to the number of sets of the device mounting means of the mounting frame, and the operation handle is provided with the window hole. It is formed in a size enough to cover the opening surface on the front side with two pieces, and when the one direction is the left and right direction, the reversing handles are detachable on both left and right sides, so two sets of equipment are mounted in the one direction. The operation handle can be shared by the mounting frame provided with the means and the mounting frame provided with the three sets of instrument mounting means, and the cost is reduced as compared with a case where a dedicated operation handle is prepared for each mounting frame. There is an effect that can be achieved.

According to a fourteenth aspect of the present invention, in the tenth aspect of the present invention, a connecting leg is provided on a rear surface of the operation handle so as to be engaged with a part of a flange piece formed on the reversing handle. In the reversing handle, since the guide groove for guiding the connecting leg is provided on the flange piece, the connecting leg is guided along the guiding groove when the operation handle is mounted on the reversing handle. There is an effect that the operation of attaching the operation handle is facilitated.

According to a fifteenth aspect, in the thirteenth aspect, the reversing handle is provided with an indicator light, and a lens for guiding light of the indicator light to a display portion of the operation handle is provided on a rear surface of the operation handle. Since the lens is formed so as to straddle a portion corresponding to the indicator light on each of the left and right sides, the lens is formed to have a size that covers two front opening surfaces of the window hole. When the reversing handle is attached to either of the left and right sides of the operation handle, the light of the indicator lamp can be guided to the display section of the operation handle.

According to a sixteenth aspect of the present invention, in the tenth aspect of the present invention, a mounting hole for inserting a box screw for mounting the mounting frame into an embedding box having the embedding frame embedded in the construction surface is formed. In the operating handle, a relief portion formed of a concave portion for preventing interference of a box screw is provided at a rear end edge of both side walls in a short direction of the body in a state where the body is mounted on the mounting frame. Since the escape handle is provided on the operation handle with a recess for preventing interference of the box screw when the body is mounted on the mounting frame, the box screw is operated when the operation handle is operated. There is an effect that interference with the operation handle can be avoided.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the same.

FIG. 3 is a front view of the same device with a cover removed.

FIG. 4 is an explanatory diagram of a main part of the above.

FIG. 5 is an explanatory diagram of a main part of the above.

FIG. 6 shows the same as the above, (a) is a rear view of the cover, (b)
Is a front view of the body.

FIG. 7 is a bottom view of the terminal device used in the above.

FIG. 8 is a front view showing a usage example of the terminal device used in the embodiment, in a state where electric wires are connected.

FIG. 9 is a front view showing a usage example of the terminal device used in the first embodiment in a state where electric wires are connected.

10A and 10B show a screw-side terminal plate using the same as the above, where FIG. 10A is a bottom view, FIG. 10B is a side view, and FIG. 10C is a front view.

FIG. 11 is an explanatory diagram of an assembling process of the terminal device used in the embodiment.

FIG. 12 is an explanatory diagram of an assembling process of the terminal device used in the embodiment.

FIG. 13 is a bottom view showing a comparative example of the terminal device used in the above.

FIG. 14 is a bottom view showing a comparative example of the terminal device used in the above.

FIG. 15 is a cross-sectional view showing a state where the above is mounted on a mounting frame.

FIG. 16 is an explanatory diagram of how to attach the operation handle to the reversing handle in the above.

FIG. 17 is a perspective view of a single operation handle used in the embodiment.

FIG. 18 is an explanatory diagram of how to attach a reversing handle to a single operation handle in the above.

FIG. 19 is a perspective view of two operation handles used in the embodiment.

FIG. 20 is an explanatory diagram of how to attach a reversing handle to two operation handles in the above.

FIG. 21 is an explanatory diagram of a main part of the above.

FIG. 22 is an explanatory diagram of how to attach a reversing handle to two operation handles in the above.

FIG. 23 is an explanatory diagram of how to attach a reversing handle to two operation handles in the above.

FIG. 24 is a front view showing a state where the switch is attached to a plate frame.

FIG. 25 is an exploded perspective view when two of the above are mounted on a plate frame.

FIG. 26 is an exploded perspective view when one of the above is attached to a plate frame.

FIG. 27 is a front view showing a state where the switch is attached to another plate.

FIG. 28 is an exploded perspective view showing the second embodiment.

FIG. 29 is a sectional view of the above.

FIG. 30 is a front view of the same device with the cover removed.

FIG. 31 is an explanatory diagram of a main part of the above.

FIG. 32 is an explanatory diagram of a main part of the comparative example.

FIG. 33 is a cross-sectional view of a main part in another configuration example of the above.

FIG. 34 is an explanatory diagram of a mounting position of a reversing handle to two operation handles in another configuration example of the above.

FIG. 35 is a bottom view of the operation handle in another configuration example of the above.

FIG. 36 shows a contact used in another configuration example of the above,
(A) is a front view, (b) is a bottom view.

FIG. 37 is an explanatory diagram showing a relationship between a contact and a terminal device in another configuration example of the embodiment.

38 shows a receiving-side terminal plate in the same as the above, (a) is a front view, and (b) is a bottom view. FIG.

39A and 39B show the receiving-side terminal plate of the above, wherein FIG. 39A is a front view and FIG. 39B is a bottom view.

FIGS. 40A and 40B show the receiving-side terminal plate in the above, wherein FIG. 40A is a front view and FIG.

41A and 41B show a receiving-side terminal plate of the above, where FIG. 41A is a front view and FIG. 41B is a bottom view.

FIG. 42 is a sectional view showing a conventional example.

FIG. 43 is a sectional view showing a state where the above is attached to an attachment frame and an operation handle is attached.

FIG. 44 is an explanatory diagram of how to attach the operation handle in the above.

FIG. 45 is a sectional view showing another conventional example.

FIG. 46 is an explanatory diagram of an applicable electric wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 12 Wire insertion hole 30a, 30b Terminal device 35 Screw hole 36 Counter sink 100a, 100b Terminal frame 45, 46 Terminal plate

Continuation of the front page (72) Inventor Hiroyuki Tateishi 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works Co., Ltd.

Claims (16)

[Claims] 1. A switch in which a terminal device integrally including a fixed contact forming a contact device together with a movable contact is housed in a body, wherein the terminal device comprises an annular terminal frame attached to the body, and a terminal frame. A terminal screw which is screwed into a screw hole provided through the peripheral wall of the terminal frame to connect and hold the electric wire between the terminal frame and the terminal frame. A switch having a holding surface that is curved so that a cross section along an opening surface of a frame expands in a direction away from a tip end surface of a terminal screw. 2. The terminal frame is formed by caulking and joining two members, a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed thereon. A wire stopper piece that regulates the insertion depth of the connector is provided integrally with the screw-side terminal plate, and a contact holding piece that holds the fixed contact is provided at a tip end of a connecting piece extending from the receiving-side terminal plate. The switch according to claim 1, wherein 3. The terminal frame is formed by joining two members, a screw terminal plate having the screw holes formed therethrough and a receiving terminal plate having the holding surface formed thereon. The countersink is integrally formed on the outer periphery of the screw hole, and the wire stopper piece for regulating the insertion depth of the wire is integrally formed. 2. The switch according to claim 1, wherein the switch is formed in a shape that can be coupled to the receiving terminal plate. 4. An overhanging piece protruding laterally from both side edges around the counter sink in the screw-side terminal plate, and a positioning hole into which the overhanging piece is inserted is provided in the receiving-side terminal plate. 4. The switch according to claim 3, wherein the switch comprises: 5. The terminal frame is formed by joining two members, a screw-side terminal plate having the screw holes formed therethrough and a receiving-side terminal plate having the holding surface formed therein, and the fixed contact is formed. The holding contact holding piece is provided at the distal end of the connecting piece extending from the receiving terminal plate, and a pair of projecting pieces sandwiching a rib protruding from the inner surface of the body are provided on the connecting piece. The switch according to claim 1, wherein 6. A reversing handle mounted on the body so as to be pivotably supported on the body and opening and closing the contact device, and an indicator light mounted on the reversing handle, wherein the terminal frame is An electric wire stopper piece formed by joining two members, a screw side terminal plate having the screw hole formed therethrough and a receiving side terminal plate having the holding surface formed thereon, for regulating the insertion depth of the electric wire. An attachment piece is provided integrally with the screw-side terminal plate, and mounting protrusions are provided on both side edges of the wire stopper piece, and are provided on an extension piece extending from a contact made of a metal plate serving as a current supply path to the indicator lamp. The contact and the screw-side terminal plate are connected by the engagement of the mounting projection to the mating portion, and the mounting projection is formed with an inclined surface that reduces the amount of protrusion from the wire stopper piece toward the contact. The switch according to claim 1, wherein the switch is a switch. 7. The body has a box shape and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body. A pair of assembling projections are protruded apart from each other in the longitudinal direction, and an assembling tongue is projected rearward from a rear edge of the cover,
The body and the cover are joined by engaging the assembling projection with the assembling hole provided in the assembling tongue, and the width of the assembling projection in the longitudinal direction of the body is made different on both side surfaces of the body. The switch according to claim 1. 8. The container has a box shape and includes a synthetic resin body having an open front surface and a cover disposed on the front side of the body. A pair of assembling projections are protruded apart from each other in the longitudinal direction, and an assembling tongue is projected rearward from a rear edge of the cover,
The body and the cover are joined by the assembly projections engaging with the assembly holes provided in the assembly tongue piece, and a rib is provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and on the other side. 2. The switch according to claim 1, wherein a concave portion for fitting the rib is provided, and the width of the rib is made different at both ends. 9. A structure in which a rib is provided on one of opposing surfaces of the body and the cover at both ends in the longitudinal direction, and a concave portion is provided at the other end, and the width of the rib is made different at both ends. The switch according to claim 7, characterized in that: 10. A reversing handle mounted on the body so as to be pivotally supported by the body to open and close the contact device, an operation handle detachably attached to a front side of the reversing handle, A mounting portion for mounting on a mounting frame for an embedded wiring device, and a cutout portion for removing the operation handle from the reversing handle in a state where the operation handle is mounted on the mounting frame is provided at a rear end edge of the operation handle. The switch according to claim 1, wherein the switch comprises: 11. A reverse assembling rib for restricting a mounting direction of the operation handle to the reversing handle only in a predetermined direction is provided on each of opposing surfaces of the operation handle and the reversing handle. Item 11. The switch according to Item 10. 12. The switch according to claim 10, wherein a mark indicating the mounting direction of the operation handle is displayed on the opposing surfaces of the operation handle and the reversing handle. 13. The outer shape of the above-mentioned container body in the short direction,
The number of sets of mounting means of the mounting frame for a mounting frame for an embedded wiring device formed in a rectangular frame shape having a window hole in the center and provided with two or three sets of mounting means in one direction. The operation handle is formed in such a size as to cover the opening surface on the front side of the window hole with two pieces. 11. The switch according to claim 10, wherein the reversing handle is detachable. 14. A connecting leg, which is engaged with a part of a flange formed on the reversing handle, protrudes from a rear surface of the operation handle, and guides the coupling leg to the flange on the reversing handle. 11. The switch according to claim 10, wherein a guide groove is provided. 15. A reversing handle is provided with an indicator light, and a lens for guiding light of the indicator light to a display portion of the operation handle is disposed on a rear surface of the operation handle, and the lens is displayed on each of the left and right sides. 14. The switch according to claim 13, wherein the switch is formed to have a size extending over a portion corresponding to a lamp. 16. A mounting hole in which a box screw for inserting the mounting frame into an embedding box embedded in a construction surface is formed. On the rear edge of both sides in the hand direction,
11. The switch according to claim 10, wherein a relief portion comprising a concave portion for preventing interference of a box screw is provided when the body is mounted on the mounting frame.