JP4281562B2 - switch - Google Patents

Description

  The present invention relates to a switch.

  2. Description of the Related Art Conventionally, in embedded wiring devices such as switches and outlets, there are known ones having a pillar terminal as a terminal for connecting an external electric wire (see, for example, Patent Document 1).

  Here, as a single-pole double-throw type switch having a pillar terminal (so-called three-way switch), as shown in FIG. 18, the rear body 110 and the front cover 120 accommodate three contact devices. The body 100 is configured, and three operation handles 160 for switching the contact of each contact device are disposed on the front surface side of the container body 100 (that is, the front surface side of the cover 120), and connected to each contact device. One in which three pillar terminals 130 are provided on the rear surface side of the container body 100 (that is, the rear surface side of the body 110) has been proposed. The pillar terminal 130 is formed by screwing a terminal screw 132 into a screw hole (not shown) penetrating the peripheral wall of the annular terminal frame 131, and is inserted through the opening surface of the terminal frame 131 from the rear of the container body 100. The external electric wire is sandwiched between the peripheral wall of the terminal frame 131 and the front end surface of the terminal screw 132.

  When constructing the switch shown in FIG. 18, mounting screws (not shown) inserted from the front into the mounting holes 127 provided on the left and right sides of the cover 120 are screwed into a switch box embedded in the construction surface, The mounting screw is directly screwed onto the construction surface. A decorative plate 190 having a window hole for exposing the operation handle 160 is attached to the front side of the cover 120.

  Further, the switch shown in FIG. 18 includes an indicator light block 170 as shown in FIG. The indicator lamp block 170 includes an indicator lamp 171 composed of a neon lamp that is lit in association with contact switching of the contact device, a pair of connection lines 175 connected to the indicator lamp 171, and a lamp that houses a part of the indicator lamp 171. A case 173 is provided. On the other hand, the cover 120 is formed with a case insertion hole (not shown) into which the lamp case 173 is inserted, and the operation handle 160 is provided with a display unit for emitting the light of the indicator lamp 171 to the outside. Here, the ends of the pair of connection lines 175 connected to the indicator lamp 171 are connected to the two pillar terminals 130, respectively.

In addition to the three-way switch, for example, a single-pole single-throw switch (so-called one-sided switch), a two-pole single-throw-type switch, so-called four-way switch ( A switch that can select two connection relationships for connecting one of the four terminals and the remaining two terminals in a one-to-one relationship is known.
Japanese Patent Laying-Open No. 2003-249282 (see paragraph numbers [0015]-[0018], FIG. 3)

  By the way, in the switch shown in FIG. 18, it is necessary to hold the connection line 175 so that the connection line 175 of the indicator light block 170 does not come off from the terminal frame 131 when performing the connection work of connecting the external electric wire to the pillar terminal 130. Therefore, workability of the external wire connection work was not good. In a three-way switch that switches contacts by alternately pressing both ends of the operation handle, the load may be turned on or off when one end of the operation handle 160 is pushed. If the display section is provided at one end of the operation handle 160, the load status cannot be confirmed by the indicator lamp, which may cause confusion.

  This invention is made | formed in view of the said reason, The objective is to provide the switch which can perform the connection operation | work of an external electric wire irrespective of the connection wire of an indicator lamp block.

According to the first aspect of the present invention, there is provided a device housing the contact device, a plurality of terminals electrically connected to the contact device and connected to an external electric wire, and switching the contact of the contact device disposed on the front side of the device body. An operation handle for performing, an indicator lamp that is lit in connection with the contact switching of the contact device, and a pair of connection lines connected to the indicator lamp, and an indicator lamp block disposed outside the container body, to the terminal to which the connection line is connected among the terminals, only set a connection line connecting part for connecting to an external wire connecting portion end side of the connection lines for connecting an external electric wire, the terminal is disposed in the device body A contact plate that is elastically contacted with the external electric wire introduced into the container through an electric wire insertion hole penetrating the container and the contact piece that is urged in a direction approaching the contact piece. Link that connects the locking piece that holds the external wire, and the contact piece and the locking piece Has the door, the external wire connecting portion is constituted by the contact piece and the locking piece, the connecting wire connecting portion is characterized by comprising constituted by connecting pieces.

According to the present invention, the terminal to which the connection line is connected is provided with the external wire connection part for connecting the external electric wire and the connection line connection part for connecting the terminal side of the connection line, so that the external electric wire is connected to the terminal. It is not necessary to hold down the connecting wire of the indicator light block when connecting the external electric wire, so the external electric wire can be connected regardless of the connecting wire of the indicator light block. Become . In addition, since the connecting line connecting portion is constituted by a connecting piece that is less likely to be deformed than the contact piece and the locking piece, it is possible to stably connect the terminal side of the connecting line.

According to a second aspect of the present invention, in the first aspect of the present invention, the indicator lamp block includes a part of a contactor that is electrically connected at the end of each connection line and can be elastically contacted with the connection line connection portion. A connector portion housed in the housing is provided, and the container body is provided with an insertion recess into which the housing is inserted using the elasticity of the housing at a position corresponding to the connection line connection portion, and is provided on the side surface of the housing. The mounting claw is unevenly coupled to a holding groove communicating with the insertion recess .

According to this invention, the housing of the connector portion can be easily inserted into the insertion recess, and the contact is elastically contacted with the connection line connection portion by inserting the housing of the connector portion into the insertion recess. since terminal is to be connected to the connecting line connector, connection work industry is facilitated to the connecting line connector.

According to a third aspect of the present invention, there is provided a device housing the contact device, a plurality of terminals electrically connected to the contact device and connected to an external electric wire, and switching the contact of the contact device disposed on the front side of the device body. An operation handle for performing, an indicator lamp that is lit in connection with the contact switching of the contact device, and a pair of connection lines connected to the indicator lamp, and an indicator lamp block disposed outside the container body, Of the terminals, a terminal to which the connection line is connected is provided with an external wire connection part for connecting an external electric wire and a connection line connection part for connecting the terminal side of the connection line, and the indicator lamp block includes the indicator lamp. A lamp case of a synthetic resin molded product that is housed and leads out the connection line is provided, the lamp case including a coupling hole formed in a coupling piece provided in one of the vessel body and the lamp case, and a coupling protrusion provided in the other To the container The combined to become the previous SL contact device and juxtaposed case mounting portion is in the same direction by three respectively the terminal device and the operating handle and the coupling piece is set and the plurality of the terminals and pairwise And the vessel body is provided with an erroneous insertion prevention rib for preventing the lamp case from being inserted between the coupling pieces facing each other in the case attaching portions adjacent in the same direction. To do.

According to the present invention, the terminal to which the connection line is connected is provided with the external wire connection part for connecting the external electric wire and the connection line connection part for connecting the terminal side of the connection line, so that the external electric wire is connected to the terminal. When connecting the lamp, it is not necessary to hold down the connecting wire of the indicator lamp block, and the lamp case storing the indicator lamp in the indicator lamp block can be easily attached to and detached from the instrument body, and assembly work is facilitated. . Further, since the lamp case is coupled to the body by engaging the coupling hole formed in the coupling piece provided on one of the vessel body and the lamp case and the coupling protrusion provided on the other side, the lamp case. In the indicator lamp block, the lamp case storing the indicator lamp can be easily attached to and detached from the container, and the assembling work is facilitated. Further, the since the lamp case erroneous insertion preventing ribs for preventing from being inserted is provided, it is possible to prevent the wrong location in the previous SL instrument body of the lamp case is attached.

The invention of claim 4 is the invention 請 Motomeko 3, the lamp case, and an insulating rib to isolate the pair of leads of the indicator is provided.

  According to this invention, the insulation distance between a pair of lead | read | reed of the said indicator lamp can be ensured easily.

According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the container is characterized in that a display unit for emitting the light of the indicator lamp to the outside is provided in parallel with the operation handle. .

  According to this invention, the state of the indicator lamp can be visually recognized through the display unit regardless of the operation position of the operation handle.

In invention of Claim 1, when connecting an external electric wire to a terminal, it is not necessary to hold down the connecting wire of an indicator light block, and the external electric wire can be connected regardless of the connecting wire of the indicator light block. Since this is possible, there is an effect that the connection work of the external electric wire becomes easy . In addition, since the connecting line connecting portion is constituted by a connecting piece that is less likely to be deformed than the contact piece and the locking piece, there is an effect that it is possible to stably connect the terminal side of the connecting line. is there. In invention of Claim 3, when connecting an external electric wire to a terminal, it is not necessary to hold down the connecting wire of an indicator light block, and the external electric wire can be connected regardless of the connecting wire of the indicator light block. Since this is possible, there is an effect that the connection work of the external electric wire becomes easy. Further, since the lamp case is coupled to the body by engaging the coupling hole formed in the coupling piece provided on one of the vessel body and the lamp case and the coupling protrusion provided on the other side, the lamp case. In the indicator light block, the lamp case storing the indicator light can be easily attached to and detached from the body, and the assembly work is facilitated. Further, since the erroneous insertion preventing rib for preventing the lamp case from being inserted is provided, it is possible to prevent the lamp case from being attached to the wrong position of the container.

(Embodiment 1)
Hereinafter, the switch of the present embodiment will be described with reference to FIGS.

  The switch of the present embodiment includes a rectangular parallelepiped synthetic resin molded body 10 whose front surface (upper surface in FIG. 4) is open, and a synthetic resin molded product cover 20 coupled to the front side of the body 10. A body 1 is provided. It should be noted that four assembly claws 11a and 11b that are spaced apart in the left-right direction of the body 10 protrude from both outer surfaces in the vertical direction of the body 10, and the assembly claws 11b can be engaged from the rear surface of the cover 20. A pawl (not shown) and an assembly piece 21 formed with an assembly hole 21a in which the assembly pawl 11a can be engaged are projected.

  The internal space of the body 10 is partitioned into three unit unit chambers 13 by two insulating walls 12 that are formed apart from each other in the left-right direction. Each unit unit chamber 13 includes an electric wire provided on the rear wall of the body 10. Three terminal plates 31, 32, 33 for connecting the external electric wire 5 inserted into the container 1 through the insertion hole 15 (see FIGS. 7 and 11A) and the contact device 40 are accommodated. Here, the internal space of each unit unit chamber 13 is divided into three chambers by two partition walls 14 formed apart from each other in the vertical direction of the body 10, and the upper compartment stores the terminal plates 31 and 32. The terminal storage chamber 13a, the lower compartment is a terminal storage chamber 13b for storing the terminal plate 33, and the central portion is a central storage chamber 13c for storing the contact device 40. In the present embodiment, each terminal plate 31, 32, 33 constitutes a terminal for connecting the external electric wire 5.

  On the other hand, the cover 20 has a front surface at the center in the vertical direction retracted relative to the front surfaces at both the upper and lower ends in order to secure a swinging space for the operation handle 60 described later. A long mounting hole 27 is formed through which a mounting screw threaded into a mounting tongue provided on the opening side of a switch box (embedding box) embedded in a construction surface such as a wall surface is inserted. Yes. A rectangular frame-shaped decorative plate 90 made of a synthetic resin molded product is detachably mounted on the front side of the cover 20, and the operation handle 60 is disposed in the rectangular window hole 91 of the decorative plate 90. Here, the operation handle 60 is formed to a size that covers most of the window hole 91 with three pieces. That is, the operation handle 60 is formed so that the horizontal dimension is approximately one third of the horizontal dimension of the window hole 91, and the vertical dimension is slightly smaller than the vertical dimension of the window hole 91. Is formed. In addition, locking holes 26 into which locking pieces 92 (see FIG. 9) protruding from the rear surface of the decorative plate 90 are inserted are provided near the four corners of the cover 20. In addition, what is necessary is just to screw the said attachment screw inserted in the attachment hole 27 with a construction surface, when attaching the switch of this embodiment directly to a construction surface.

  In addition, the cover 20 has a recess 22 formed in the front surface at a portion between the mounting holes 27, and three opening windows 23 are formed in the bottom wall of the recess 22 so as to be separated in the left-right direction. A synthetic resin molded reversing handle 50 is mounted on the opening window 23 so as to be swingable with respect to the cover 20, and the contact device 40 is opened and closed as the reversing handle 50 swings. In the reversing handle 50, a coupling handle 54, which is disposed obliquely forward and to which the operation handle 60 is coupled, is formed continuously and integrally through a step piece 53. The coupling handle 54 has a front side of the cover 20 on the front side. The overlapping operation handle 60 of the synthetic resin molded product is coupled, and the operation handle 60 is swung as the operation portion, whereby the reversing handle 50 is swung and the contact switching of the contact device 40 is performed. The coupling handle 54 has a size in the vertical direction of the cover 20 that is larger than the size of the reversing handle 50.

  The terminal plates 31 and 32 accommodated in the terminal accommodating chamber 13a are formed of conductive metal plates, and contact pieces 31a and 32a that are elastically contacted with the external electric wires 5 introduced into the container body 1 through the electric wire insertion holes 15 are in contact with each other. The locking pieces 31b and 32b that are biased toward the pieces 31a and 32a and sandwich the external electric wire 5 between the contact pieces 31a and 32a, and the contact pieces 31a and 32a and the locking pieces 31b and 32b are continuously integrated. And connecting pieces 31c and 32c to be connected to each other. Here, the terminal plates 31 and 32 are such that the connecting pieces 31 c and 32 c are formed in an L shape, and the connecting pieces 31 c and 32 c are arranged along the partition wall 14 and the opening surface of the body 10. It is stored in the storage chamber 13 a and is held between the partition wall 14 and the inner surface of the body 10 facing the partition wall 14. The terminal plates 31 and 32 are formed by bending a band-shaped metal plate into an L shape, further bending one end portion into an S shape to form contact pieces 31a and 32a, and forming the other end portion into a J shape. Are formed into locking pieces 31b and 32b.

  In addition, the terminal plate 33 accommodated in the terminal accommodating chamber 13b is formed of a conductive metal plate and elastically contacts the external electric wire 5 introduced into the container body 1 through the electric wire insertion hole 15; The two locking pieces 33b that are biased toward the contact pieces 33a and sandwich the external electric wire 5 between the contact pieces 33a, and the two contact pieces 33a and the two locking pieces 33b are connected to each other. And one connecting piece 33c. Here, the terminal plate 33 has the connecting piece 33 c formed in an L shape, and is stored in the terminal storage chamber 13 b so that the connecting piece 33 is disposed along the partition wall 14 and the opening surface of the body 10. The partition wall 14 is held between the partition wall 14 and the inner surface of the body 10 facing the partition wall 14. The terminal plate 33 is formed by bending a strip-shaped metal plate with slits at both ends in the longitudinal direction into an L shape, and further bending one end into an S shape to form two contact pieces 33a. The other end is bent in a J shape to form two locking pieces 33b.

  The wire insertion hole 15 is formed in a portion corresponding to between the contact pieces 31a, 32a, 33a of the terminal plates 31, 32, 33 and the locking pieces 31b, 32b, 33b on the rear wall of the body 10 (that is, the wire Two insertion holes 15 are formed on the rear wall of each of the terminal storage chambers 13a and 13b.) When the external electric wire 5 is inserted into the body 1 through the electric wire insertion hole 15, the tip of the external electric wire 5 comes into contact. Between the pieces 31a, 32a, 33a and the locking pieces 31b, 32b, 33b, the external electric wire 5 comes into contact with the contact pieces 31a, 32a, 33a, and the terminal plates 31, 32, 33 and the external electric wires 5 are connected. While being electrically connected, the leading edge of the locking pieces 31b, 32b, 33b bites into the external electric wire 5 and is mechanically held so that the external electric wire 5 does not come out of the body 1. Here, the external electric wire 5 is an insulation-coated electric wire, and the insulation coating is removed so that the core wire 5b is exposed at a portion to be inserted into the body 1. Therefore, holding the external electric wire 5 between the contact pieces 31a, 32a, 33a and the locking pieces 31b, 32b, 33b actually means that the core wire 5b is held. Here, each terminal which consists of each terminal board 31, 32, 33 comprises the quick connection terminal.

  Each terminal storage chamber 13a, 13b stores one release member 34 for releasing a wire. The release body 34 stored in the terminal storage chamber 13a is disposed between the locking pieces 31b and 32b provided on the terminal plates 31 and 32, respectively. Here, the release body 34 accommodated in the terminal storage chamber 13a has push pieces 34a that abut on the rear surface sides of the respective locking pieces 31b and 32b project from the left and right side surfaces, and an operation lever 34b for releasing the electric wire. Has a shape that projects obliquely backward and integrally. On the other hand, the release body 34 stored in the terminal storage chamber 13 b is disposed between the two locking pieces 33 b and 33 b provided on the terminal plate 33. Here, the release body 34 accommodated in the terminal storage chamber 13b has push pieces 34a that abut on the rear side of each locking piece 33b project from the left and right side surfaces, and the operation lever 34b for releasing the wire is slanted. It has a shape that protrudes continuously and integrally.

  In the body 10, an operation slit 16 having a front edge opened is formed in a portion corresponding to the release body 34 on both upper and lower side walls, and the operation lever 34 b is exposed to the upper and lower sides of the body 10 through the operation slit 16. Yes. The release body 34 is rotatably held in the container body 10. When the distal end portion of the operation lever 34b is moved forward, the release body 34 rotates, and the lock pieces 31b, 32b, 33b are pushed pieces 34a. Is bent in a direction away from the contact pieces 31a, 32a, 33a. Therefore, if the operation lever 34 b is operated forward with the external wires 5 connected to the terminal plates 31, 32, 33 as described above, the locking pieces 31 b, 32 b, 33 b bend away from the external wires 5. Thus, the mechanical holding of the external electric wire 5 is released, and the external electric wire 5 can be pulled out from the container 1.

  The contact device 40 described above includes two contact holding pieces 45 and 46 provided with fixed contacts 41a and 41b at one end arranged in the central storage chamber 13c, and a switching element 43 formed of a plate-like conductive plate described later. The other end portions of the contact holding pieces 45 and 46 are caulked and fixed on the front surface of the portion arranged along the opening surface of the body 10 in the connecting piece 31c of the terminal plates 31 and 32. One end portions of the contact holding pieces 45 and 46 are arranged to face each other, and the fixed contacts 41a and 41b face each other. The opening / closing element 43 includes movable contacts 42a, 42b on both surfaces in the thickness direction, and the movable contacts 42a, 42b are selectively brought into contact with the fixed contacts 41a, 41b as the opening / closing element 43 rotates. is there. That is, the movable contact 42b is separated from the fixed contact 41b while the movable contact 42a is in contact with the fixed contact 41a, and the movable contact 42a is separated from the fixed contact 41a while the movable contact 42b is in contact with the fixed contact 41b.

  Further, the contact device 40 includes a connection piece 47 that is caulked and fixed to a front surface of a portion arranged along the opening surface of the body 10 in the connection piece 33c of the terminal plate 33, and the connection piece 47 on the side of the central storage chamber 13c. A support piece 49 extends from the rear end edge of the connecting piece 48 extending rearward from the end edge along the inner bottom surface of the body 10. A letter-shaped fulcrum groove (not shown) is formed in a shape orthogonal to the extending direction of the support piece 49. Here, in the contact device 40, the rear end edge of the switching element 43 described above is inserted into the fulcrum groove provided on the support piece 49, and the switching element 43 is rotatable about the fulcrum groove. . A pair of holding walls 19 for holding the opening / closing element 43 project forward from the inner bottom surface of the central storage chamber 13 c of each unit unit chamber 13 in the body 10, and the holding walls 19 face each other. Is formed with a V-shaped rotation restricting groove 19a into which a projecting piece 43a projecting on the side edge of the opening / closing element 43 can be inserted, so that the rotation range of the opening / closing element 43 is defined by the rotation restricting groove 19a. Is regulated. A reversing spring 44 made of a coil spring is held between the opening / closing element 43 and the reversing handle 50, and a spring seat piece 43 b inserted into one end of the reversing spring 44 projects from the front end of the opening / closing element 43. Is done.

  The other end of the reversing spring 44 is inserted into a cylindrical portion 51 provided on the rear surface side of the reversing handle 50. A fulcrum protrusion 52 is provided on both side surfaces of the reversing handle 50 in the left-right direction of the body 1, and each fulcrum protrusion 52 is formed in a shape with a tapered front end. A pair of bearing protrusions 24 projecting forward from the periphery of the opening window 23 are provided on the left and right sides of each opening window 23 on the bottom wall of the recess 22 formed on the cover 20. A bearing recess 25 into which the fulcrum protrusion 52 of the reversing handle 50 is inserted is formed on the opposite surface. The bearing recess 25 pivotally supports the fulcrum protrusion 52 at least at the front end portion so as to be swingable.

  The coupling claws 61a provided at the front end portion (rear end portion) of the coupling leg 61 (see FIG. 7) projecting from the rear surface of the operation handle 60 are engaged with both longitudinal end surfaces of the coupling handle 54 described above. An engaging claw 54a to project is projected, and a slit 54b into which a rib 63 (see FIG. 10) projecting from the rear surface of the operation handle 60 is inserted is formed at the longitudinal center of the coupling handle 54. Yes. On the other hand, an abutment rib 62 that abuts against the front surface of the coupling handle 54 protrudes from the rear surface of the operation handle 60. Therefore, the operation handle 60 can be attached to the coupling handle 54 without rattling. The coupling handle 54 is formed so as not to interfere with the inner bottom surface of the concave portion 22 of the cover 20 when swinging.

  Further, three through holes 28 for transmitting light from an indicator lamp 71 of an indicator lamp block 70 described later are formed at one end in the vertical direction of the cover 20 so as to be spaced apart in the left-right direction. On the front surface side, a belt-like lens block 80 that is integrally provided with three lens portions 81 into which rear portions are inserted into the respective through holes 28 is mounted. Therefore, the light from the position indicator lamp 71 is guided to the outside through the lens unit 81. Here, the lens block 80 is positioned above the operation handle 60 and is positioned between the inner peripheral surface of the window hole 91 of the decorative plate 90 and the outer peripheral surface of the operation handle 60. In the present embodiment, the lens unit 81 constitutes a display unit that emits the light of the indicator lamp 71 to the outside, and the lens unit 81 that is a display unit in the vertical direction of the container 1 is provided in parallel with the operation handle 60. Therefore, the state of the indicator lamp 71 can be visually recognized through the display unit regardless of the operation position (upper end portion, lower end portion) of the operation handle 60.

  By the way, the above-mentioned indicator lamp block 70 is arranged outside the container 1, and includes an indicator lamp 71 composed of a neon lamp that is lit in association with contact switching of the contact device 40, and a pair of leads of the indicator lamp 71. A pair of connecting wires 75 connected to 71a, a current limiting resistor 72 inserted between one lead 71a and one connecting wire 75, a position indicator lamp 71 and a resistor 72 are housed, and the above-mentioned pair of connecting wires 75 are accommodated. A lamp case 73 of a synthetic resin molded product from which the connection line 75 is derived, and a contact that can be elastically contacted with the connecting pieces 31c and 32c of the terminal plates 31 and 32 described above, with the respective ends of each connection line 75 being electrically connected. 77 is provided with a connector portion 76 in which a part of 77 is housed in a housing 76a of a synthetic resin molded product. Here, since the rib 73a for insulation which isolate | separates a pair of lead | reading 71a of the indicator lamp 71 is continuously projected integrally from the inner surface inside the lamp case 73, a pair of indicator lamp 71 is used without using another member. The insulation distance between the leads 71a can be easily ensured. In the present embodiment, the two terminal plates 31, 32 of the above-described three terminal plates 31, 32, 33 constitute a terminal to which the terminal side of the connection line 75 is connected. Comprises the external wire connection part which connects the external electric wire 5 with the contact pieces 31a and 32a and the locking pieces 31b and 32b, and the rear end part of the site | part arrange | positioned along the partition wall 14 in the connection pieces 31c and 32c Constitutes connection line connecting portions 31d and 32d for connecting the end side of the connection line 75. Thus, in the present embodiment, the external wire connecting portion for connecting the external electric wire 5 and the connecting wire connecting portion 31d for connecting the end side of the connecting wire 75 to the terminal plates 31 and 32 to which the connecting wire 75 is connected, respectively. 32d, it is not necessary to hold down the connecting wire 75 of the indicator light block 70 when connecting the external electric wire 5 to the terminal plates 31, 32, and the connecting wire 75 of the indicator light block 70 is provided. Since the connection work of the external electric wire 5 can be performed regardless of the above, the connection work of the external electric wire 5 becomes easy. Moreover, since each connection line connection part 31d, 32d is comprised by a part of connection piece 31c, 32c which is hard to deform | transform compared with the contact pieces 31a, 32a and the locking pieces 31b, 32b, the terminal of each connection line 75 The contact 77 of the connector portion 76 provided on the side can be stably brought into contact with the connection line connecting portions 31d and 32d to be electrically connected.

  By the way, the left and right side walls of the lamp case 73 are formed with two front and rear cut grooves 73b whose front ends are open, and a portion between the two cut grooves 73b is a bending piece 73c having flexibility in the thickness direction. The outer surface of the front end portion of the bending piece 73c is formed into a concave-convex engagement with a coupling hole 29b provided in each coupling piece 29a of the case coupling portion 29 including a pair of coupling pieces 29a protruding from the rear surface of the cover 20. A coupling protrusion 73d to be mated is provided. Therefore, the lamp case 73 is coupled to the cover 20 of the body 1 by engaging the coupling protrusion 73d with the coupling hole 29a provided in the coupling piece 29 by using the elasticity of the bending piece 73c. is there. In this state, the indicator lamp 71 is positioned so as to face the rear end edge of the lens unit 81 described above. In the present embodiment, the contact device 40 and the terminal device 31 including the three terminal plates 31, 32, and 33, and the case attachment portion 29 including the operation handle 60 and the coupling piece 29 a as a set of three are provided. The lamp case 73 is inserted between the coupling pieces 29a of the case mounting portions 29 adjacent to each other in the same direction. Since the erroneous insertion prevention rib 29c (refer to FIG. 13) to prevent is provided, it is possible to prevent the lamp case 73 from being attached to the wrong position of the container 1. In addition, since the coupling protrusion 73d in the lamp case 73 is formed with an inclined surface that reduces the protruding amount from the outer surface of the bending piece 73c toward the front end side, the coupling protrusion 73d is easily engaged with the coupling hole 29b of the coupling piece 29a. Can be combined. In the present embodiment, the coupling hole 29b provided in the coupling piece 29a of the cover 20 and the coupling projection 73d provided in the lamp case 73 are engaged with each other, but the coupling projection 29d of the cover 20 is provided with the coupling projection. In this case, the lamp case 73 may be provided with a coupling hole so that the concave and convex portions are engaged.

  Further, the contact 77 in the connector portion 76 is bent in a J shape at the tip of the portion protruding from the housing 76 a, and is arranged along the partition wall 14 in the connecting pieces 31 c and 32 c of the terminal plates 31 and 32. It is possible to make elastic contact with the surface opposite to the side of the locking pieces 31b and 32b in the thickness direction of the formed portion.

  Further, on the rear surface of the body 10 in the present embodiment, an insertion recess 10a into which the housing 76a is inserted using the elasticity of the housing 76a of the connector portion 76 is provided at a position corresponding to each of the connection line connecting portions 31d and 32d. A mounting claw 76b protruding from the side surface of the housing 76a is connected to the holding groove 10b communicating with the insertion recess 10a. Accordingly, the housing 76a of the connector portion 76 can be easily inserted into the insertion recess 10a. By inserting the housing 76a of the connector portion 76 into the insertion recess 10a, the contact 77 elastically contacts the connection line connection portions 31d and 32d. Thus, since the terminal side of the connection line 75 is connected to the connection line connection parts 31d and 32d, connection work to the connection line connection parts 31d and 32d becomes easy.

  By connecting each connector portion 76 to the terminal plates 31 and 32 from the rear side of the container 1 as described above, a series circuit of the indicator lamp 71 and the resistor 72 can be inserted between the fixed contacts 41a and 41b. It becomes possible. The three-way switch is often used for turning on / off the staircase light, and the three-way switch of this embodiment is arranged on the upper and lower floors to turn on / off the stairway light either on the upper or lower floor. The operation can also be performed. Since the connection relationship of this type of circuit is well known, description thereof is omitted.

(Embodiment 2)
Hereinafter, the switch of the present embodiment will be described with reference to FIGS. 16 and 17.

  The basic configuration of the switch of the present embodiment is substantially the same as that of the first embodiment, the size of the body 10 in the left-right direction is approximately one third of that of the body 10 in the first embodiment, and the contact device 40 and the terminal plates 31 and 32. , 33, the reversing handle 50, the return spring 44, the operating handle 60, the display block 70, etc. are provided only one by one. On the other hand, the operating handle 60 in the present embodiment has a horizontal dimension that is approximately three times the horizontal dimension of the operating handle 60 in the first embodiment. Covers most of the. Other configurations are the same as those of the first embodiment. In FIG. 16 and FIG. 17, the same components as those in the first embodiment are denoted by the same reference numerals.

  In each of the above embodiments, the three-way switch is exemplified as the switch. However, the technical idea of the present invention is not limited to the three-way switch, and can be applied to, for example, a single-cut switch. The relationship between the contact switching and the state change of the indicator lamp 71 is not particularly limited.

FIG. 3 is a cross-sectional view of a main part in a state in which the first embodiment is shown and an external electric wire is connected. It is principal part sectional drawing which shows the same as the above. The same as the above, (a) is a cross-sectional view of the main part, (b) is an enlarged view of the main part A of (a). It is a disassembled perspective view which shows the same as the above. It is a front view showing the same. It is a side view which shows the same as the above. It is sectional drawing which shows the same as the above. It is sectional drawing which shows the same as the above. It is a perspective view which shows the same as the above. It is sectional drawing which shows the same as the above. The above is shown, and both (a) and (b) are main part sectional views. It is a principal part front view of the state which removed the cover etc. in the same as the above. It is a rear view of the cover in the same as the above. It is a partial cross section figure of the display block same as the above. It is a perspective view of the two terminal boards in the same as the above. FIG. 6 is an exploded perspective view showing a second embodiment. It is a front view showing the same. A prior art example is shown, (a) is a rear view, and (b) is a side view. It is a top view of the display block used for the same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 5 External electric wire 10 Body 14 Partition wall 20 Cover 31, 32, 33 Terminal board 31a, 32a, 33a Contact piece 31b, 32b, 33b Locking piece 31c, 32c, 33c Connection piece 31d, 32d Connection line connection part 70 Indicator light block 71 Indicator light 73 Lamp case 75 Connection line 76 Connector part 77 Contact 81 Lens part 90 Cosmetic plate

Claims (5)

A container housing the contact device, a plurality of terminals electrically connected to the contact device and connected to an external electric wire, an operation handle disposed on the front side of the container for switching the contact of the contact device; An indicator lamp that is lit in connection with the contact switching of the contact device, and a pair of connection wires connected to the indicator lamp, and an indicator lamp block that is arranged outside the vessel body, and the connection line is connected among the plurality of terminals. the terminal being, only set a connection line connecting part for connecting to an external wire connecting portion end side of the connection lines for connecting an external electric wire, the terminal is a terminal plate disposed on the device body, wherein A contact piece that elastically contacts the external electric wire introduced into the vessel through an electric wire insertion hole that penetrates the vessel, and a lock that holds the external electric wire between the contact piece that is biased toward the contact piece. And a connecting piece for connecting the contact piece and the locking piece, Switch wire connecting portion is constituted by the contact piece and the locking piece, the connecting wire connecting portion is characterized by comprising constituted by connecting pieces. The indicator light block is provided with a connector part in which a terminal part of each connection line is electrically connected and elastically contactable with the connection line connection part is housed in a housing. Is provided with an insertion recess into which the housing is inserted using the elasticity of the housing at a position corresponding to the connection line connection portion, and a mounting claw protruding from the side surface of the housing is uneven in the holding groove communicating with the insertion recess. The switch of claim 1, wherein the switch is coupled . A container housing the contact device, a plurality of terminals electrically connected to the contact device and connected to an external electric wire, an operation handle disposed on the front side of the container for switching the contact of the contact device; An indicator lamp that is lit in connection with the contact switching of the contact device, and a pair of connection wires connected to the indicator lamp, and an indicator lamp block that is arranged outside the vessel body, and the connection line is connected among the plurality of terminals. The terminal is provided with an external wire connecting portion for connecting an external wire and a connecting wire connecting portion for connecting the terminal side of the connecting wire, and the indicator light block accommodates the indicator light and the connecting wire is led out. A lamp case made of a synthetic resin molded product, and the lamp case engages a coupling hole formed in a coupling piece provided on one of the vessel body and the lamp case with a coupling protrusion provided on the other. It is coupled to the device body by, before A contact device and a terminal device that includes the plurality of terminals as a set, and three case attachment portions that include the operation handle and the coupling piece as a set, are arranged in parallel in the same direction. , opposing the coupling pieces to the lamp case to be inserted the features and to Luz switch to become disposed erroneous insertion preventing ribs for preventing the case mounting portion adjacent to each other in the same direction. The lamp case, switch 請 Motomeko 3 wherein the insulating rib to isolate the pair of leads of the indicator light you characterized by being provided. The switch according to any one of claims 1 to 4, wherein the container includes a display unit that emits light of the indicator lamp to the outside, and is arranged in parallel with the operation handle.

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