KR20050077278A - Switch - Google Patents

Abstract

An object of the present invention is to provide a switch capable of connecting an external wire regardless of the connection line of the indicator block.

The terminal plate 31 housed in the body 1 constituted by the body 10 having the front surface opened and the cover 20 coupled to the front side of the body 10 has a contact piece in which the external wire 5 is elastically contacted ( 31a), the lock piece 31b which hold | maintains the external wire 5 between the contact piece 31a, and the L-shaped connecting piece 31c which connects the contact piece 31a and the lock piece 31b. do. The external wire connection part which connects the external wire 5 by the contact piece 31a, 32a and the lock piece 31b, 32b is comprised, and it is arrange | positioned along the partition wall 14 in the body 10 in the connection piece 31c. The rear end of the portion constitutes a connecting line connecting portion 31d for connecting the distal side of the connecting line 75 of the indicator block 70.

Description

Switch {SWITCH}

The present invention relates to a switch.

Background Art Conventionally, in a buried wiring mechanism such as a switch or an outlet, a pillar terminal is known as a terminal for connecting an external electric wire (for example, Japanese Patent Laid-Open No. 2003-249282 (paragraph number [ 0015]-[0018], FIG. 3).

Here, as a single pole double throw type switch (so-called three-way switch) having a filler terminal, as shown in Fig. 18, three contact devices are housed in the rear body 110 and the front cover 120. Three operation handles 160 are provided for constructing the base 100 and for switching the contact points of the respective contact devices on the front side of the base 100 (ie, the front side of the cover 120). In addition, it is proposed that three filler terminals 130 connected to each contact device are provided on the rear side of the base 100 (that is, the rear side of the body 110). The filler terminal 130 screw-connects the terminal screw 132 to a screw hole (not shown) which penetrates the circumferential wall of the annular terminal frame 131, and opens the terminal frame 131 from the rear of the base 100. The external wire inserted through the spherical surface is held between the peripheral wall of the terminal frame 131 and the front end surface of the terminal screw 132.

In constructing the switch shown in Fig. 18, the mounting screw (not shown) inserted from the front is attached to the switch box embedded in the construction surface in the mounting holes 127 formed on the left and right sides of the cover 120, or Screw the attachment screw directly to the construction surface. In addition, a cosmetic plate 190 having a window hole for exposing the operation handle 160 is mounted on the front side of the cover 120.

In addition, the switch shown in FIG. 18 includes the indicator block 170 shown in FIG. The indicator block 170 includes an indicator light 171 consisting of a neon lamp that lights up in association with the contact switching of the contact device, a pair of connection lines 175 connected to the indicator light 171, and an indicator light 171. The lamp case 173 which accommodates a part of this is provided. On the other hand, the cover 120 is provided 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 light 171 to the outside. . Here, the ends of the pair of connection lines 175 described above connected to the indicator light 171 are connected to two pillar terminals 130, respectively.

As a switch to be used as a buried wiring mechanism, in addition to the three-way switch, for example, a single-pole single-throw switch (so-called disconnection switch), a two-pole single-throw switch, a so-called four-way switch (two terminals among four terminals) Switches capable of selecting two connection relationships for connecting the remaining two terminals one-to-one) and the like.

By the way, in the switch shown in FIG. 18, when performing the connection operation which connects an external electric wire to the filler terminal 130, the connection line 175 so that the connection line 175 of the indicator block 170 may not come out of the terminal frame 131. FIG. It is necessary to press), and workability of external wire connection work was not good. In addition, in the three-way switch that performs contact switching by alternately pressing both ends of the operation handle, when the one end of the operation handle 160 is pressed, the load may be turned on or off, and thus the operation handle 160 If the display section is provided at one end of the i), the status of the load by the indicator cannot be checked, which may cause confusion.

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

The invention of claim 1 further comprises: a body in which the contact device is housed; a plurality of terminals electrically connected to the contact device to connect external wires; an operation handle provided at the front side of the body to perform contact switching of the contact device; And a light block having a pair of connecting wires connected to the indicator lamps and a light block disposed outside the body, the terminal being connected to a connection line among the plurality of terminals. It is characterized by providing the external wire connection part which connects an electric wire, and the connection line connection part which connects the terminal side of a connection line.

According to the present invention, an indicator light block is used when connecting an external wire to a terminal by providing an external wire connecting portion for connecting an external wire and a connecting line connecting portion for connecting an end side of the connecting line to a terminal to which the connecting line is connected. It is not necessary to press the connection wires, and the connection work of the external wires can be easily performed regardless of the connection wires of the indicator block.

In the invention of claim 1, in the invention of claim 1, the light block includes a lamp case of a synthetic resin molded article in which the light is received and the connection line is drawn. The lamp case is provided on one side of the base and the lamp case. It is characterized in that the coupling hole formed in the coupling piece provided and the coupling projection formed on the other side is coupled to the base by the uneven coupling.

According to the present invention, it is possible to easily attach and detach the lamp case in which the indicator light is accommodated in the body in the indicator block to facilitate assembly work.

According to a third aspect of the invention, in the invention of the second aspect, the contact device, the terminal device including the plurality of terminals as one set, and the case attaching part including the operation handle and the coupling piece as two sets of three are each the same. It is provided in the direction, The said base body is characterized in that the misinsertion prevention rib which prevents the said lamp case from being inserted between the engaging pieces which oppose each other in the case direction adjacent to the said direction is provided.

According to the present invention, the lamp case can be prevented from being attached to the wrong position of the gas.

The invention of claim 4 is the invention of claim 2, wherein the lamp case is provided with an insulating rib for isolating a pair of leads of the indicator light.

According to the present invention, an insulation distance between a pair of leads of the indicator can be easily ensured.

The invention of claim 5 is a contact plate in the invention of claim 1, wherein the terminal is a terminal plate disposed in the base, the contact piece elastically contacting the external wire introduced into the base through a wire insertion hole penetrated through the base; And a locking piece for holding the external wire between the contact piece and being pressed in a direction close to the contact piece, and a connecting piece for connecting the contact piece and the lock piece, wherein the external wire connecting portion is composed of the contact piece and the lock piece. A connecting line connecting portion is constituted by a connecting piece.

According to this invention, since the said connection line connection part is comprised by the connection piece which can make it hard to be deformed compared with a contact piece and a lock piece, it becomes possible to connect the terminal side of the said connection line stably.

According to a sixth aspect of the present invention, in the fifth aspect, the indicator block includes a connector portion in which a terminal of each of the connection lines is electrically connected, and a part of the contactor which is elastically contactable to the connection line connection portion is accommodated in the housing. In the base, an insertion recess is formed in which the housing is inserted by using the elasticity of the housing at a position corresponding to the connection line connecting portion, and an attachment claw protruding from the side surface of the housing is uneven in a retaining groove communicating with the insertion recess. It is characterized by being combined.

According to the present invention, it is possible to easily insert the housing of the connector portion into the insertion recess, and by inserting the housing of the connector portion into the insertion recess, the contactor makes elastic contact with the connecting line connecting portion so that the end side of the connecting line is connected to the connecting line connecting portion. Since it is connected to, the connection work to the said connection line connection part becomes easy.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the base is characterized in that a display portion for emitting the light of the indicator light is provided in parallel with the operation handle.

According to the present invention, the state of the indicator can be visually recognized through the display unit irrespective of the manipulation position of the manipulation handle.

Embodiment 1

Hereinafter, the switch of this embodiment is demonstrated, referring FIGS. 1-15.

The switch of this embodiment comprises a body composed of a body 10 of a rectangular parallelepiped synthetic resin molded article having an open front surface (upper surface in FIG. 4), and a cover 20 of a synthetic resin molded article joined to the front side of the body 10. (1) is provided. In addition, four assembling claws 11a and 11b spaced apart from each other in the left and right directions of the body 10 protrude from both outer surfaces in the up and down direction of the body 10, and assembling claws from the rear surface of the cover 20. The assembly piece 21 in which the engaging claw (not shown) which 11b can engage with, and the assembling hole 21a which the assembly claw 11a can engage are formed protrudes.

The inner space of the body 10 is partitioned into three unit unit chambers 13 by two insulating walls 12 formed spaced apart from each other in the left and right directions, and each unit unit chamber 13 includes the body 10. Three terminal plates 31, 32, and 33 for connecting the external wires 5 inserted into the base 1 through the wire insertion holes 15 formed in the rear wall (see Figs. 7 and 11 (a)); The device 40 is received. Here, the inner space of each unit unit chamber 13 is divided into three chambers by two partition walls 14 formed spaced apart in the up-down direction of the body 10, and the upper partitions are the terminal plates 31, 32. The terminal compartment 13a for accommodating), the terminal compartment 13b for accommodating the terminal plate 33, and the central compartment 13c for accommodating the contact device 40 in the center part. Moreover, in this embodiment, each terminal board 31, 32, 33 each comprises the terminal which connects the external wire 5. As shown in FIG.

On the other hand, the cover 20 is retracted from the front of the upper and lower ends of the upper and lower center portions in order to secure the swing space of the operation handle 60 described later, the wall surface in the upper and lower center in the left and right sides An elongated hole attachment hole 27 is formed for inserting an attachment screw screwed into an attachment tongue provided on an opening side of a switch box (embedded switch) embedded in a construction surface such as a back. In addition, on the front side of the cover 20, a rectangular frame shaped makeup plate 90 made of a synthetic resin molded article is detachably mounted, and the operation handle 60 is disposed in the rectangular window hole 91 of the makeup plate 90. do. Here, the operation handle 60 is formed to a size that covers most of the window hole 91 with three. That is, the operation handle 60 has a dimension in the lateral direction of approximately 1/3 of the dimension in the lateral direction of the window hole 91, so that the dimension in the vertical direction is slightly smaller than the dimension in the vertical direction of the window hole 91. It is formed in dimensions. In the vicinity of the four corners of the cover 20, a locking hole 26 into which a locking piece 92 (see Fig. 9) protruding from the rear surface of the makeup plate 90 is inserted is formed. In addition, when attaching the switch of this embodiment directly to a construction surface, the said mounting screw inserted in the attachment hole 27 may be screwed to a construction surface.

In the cover 20, a recess 22 is formed in the front surface between the two attachment holes 27, and three opening windows 23 are formed on the bottom wall of the recess 22 in the horizontal direction. It is separated and formed. The inverted handle 50 of the synthetic resin molded article is mounted to the opening window 23 in a pivotally pivotable form with respect to the cover 20, and the contact device 40 is opened and closed according to the swing of the inverted handle 50. . Reverse handle 50 is disposed obliquely in front of the coupling handle 54 is coupled to the operation handle 60 is continuously formed integrally via the step piece 53, the front of the coupling handle 54 The operation handle 60 of the synthetic resin molded article overlapping the front surface of the cover 20 is coupled to the side, and the operation handle 60 is oscillated by the operation unit, so that the inversion handle 50 is oscillated to switch the contact of the contact device 40. This is to be done. In addition, the coupling handle 54 has a dimension in the vertical direction of the cover 20 larger than that of the inversion handle 50.

The terminal plates 31 and 32 accommodated in the terminal storage chamber 13a are formed of a conductive metal plate and are in contact with the external wire 5 introduced into the base 1 through the wire insertion hole 15 in elastic contact. Lock pieces 31b and 32b which are pressed in the direction close to the pieces 31a and 32a and the contact pieces 31a and 32a to hold the external wire 5 between the pieces 31a and 32a; The connecting pieces 31c and 32c which connect the contact pieces 31a and 32a and the lock pieces 31b and 32b continuously and integrally are provided. In the terminal plates 31 and 32, the connecting pieces 31c and 32c are formed in an L shape, and the connecting pieces 31c and 32c are arranged along the opening faces of the partition wall 14 and the body 10. It is accommodated in the terminal storage chamber 13a, and is hold | maintained between the partition wall 14 and the inner surface of the body 10 which opposes the partition wall 14. In the terminal plates 31 and 32, a strip-shaped metal plate is bent into an L shape, one end is bent into an S shape to form contact pieces 31a and 32a, and the other end is bent into a J shape. The lock pieces 31b and 32b are formed.

In addition, the terminal plate 33 accommodated in the terminal housing chamber 13b is formed of a conductive metal plate, and is elastically in contact with the external electric wire 5 introduced into the base 1 through the electric wire insertion hole 15. Two lock pieces 33b for pressing the contact wires 33a and the contact wires 33a in a direction close to each of the contact pieces 33a to hold the external wires 5 between the contact pieces 33a, respectively; One connecting piece 33c connecting two contact pieces 33a and two lock pieces 33b is provided. In the terminal plate 33, the connecting piece 33c is formed in an L shape, and the connecting piece 33c is arranged in the terminal storage chamber 13b so that the connecting piece 33c is disposed along the opening face of the partition wall 14 and the body 10. It is received and held between the partition wall 14 and the inner side surface of the body 10 opposite the partition wall 14. In addition, the terminal plate 33 is formed by bending a strip-shaped metal plate having slits at both ends in the longitudinal direction in an L shape, and having one end bent in an S shape to form two contact pieces 33a. It is bent in a J shape to form two lock pieces 33b.

The electric wire insertion hole 15 is formed in a portion corresponding to the contact pieces 31a, 32a, 33a of the terminal plates 31, 32, 33 and the lock pieces 31b, 32b, 33b on the rear wall of the body 10. (That is, two wire insertion holes 15 are formed in the rear wall of each of the terminal storage chambers 13a and 13b), and the external wire 5 is inserted into the base 1 through the wire insertion holes 15. The lower end of the outer wire 5 is held between the contact pieces 31a, 32a, 33a and the lock pieces 31b, 32b, 33b, and the outer wire 5 is attached to the contact pieces 31a, 32a, 33a. In contact, the terminal plates 31, 32, 33 and the external wire 5 are electrically connected to each other, and the edges of the lock pieces 31b, 32b, 33b are embedded in the external wire 5 so that the external wire 5 It is kept mechanically so as not to fall off from (1). Here, the outer wire 5 is an insulation coated wire and the portion inserted into the base 1 is removed from the insulation coating so that the core wire 5b is exposed. Accordingly, the fact that the external wire 5 is held between the contact pieces 31a, 32a, 33a and the lock pieces 31b, 32b, 33b means that the core wire 5b is actually held. In this case, each terminal composed of the terminal plates 31, 32, and 33 constitutes a fastening terminal.

In addition, one release body 34 for disconnecting wires is stored in each terminal storage chamber 13a, 13b. The release body 34 accommodated in the terminal storage chamber 13a is disposed between the lock pieces 31b and 32b provided in the terminal plates 31 and 32. Here, in the release body 34 accommodated in the terminal storage chamber 13a, the pressing piece 34a which contacts the back side of each lock piece 31b, 32b respectively protrudes from each of the left and right sides, The operation lever 34b has a shape of projecting continuously and integrally at an angle to the rear. On the other hand, the release body 34 accommodated in the terminal storage chamber 13b is disposed between two lock pieces 33b and 33b provided on the terminal plate 33. Here, as for the release body 34 accommodated in the terminal storage chamber 13b, the pressing piece 34a which contacts each back side of each lock piece 33b protrudes from each of the left and right sides, and the control lever for wire release 34b has a shape which obliquely projects rearward integrally integrally.

The body 10 is provided with the operation slit 16 in which the front-edge edge side was opened in the site | part corresponding to the release body 34 in the upper and lower side walls, and the operation lever 34b has the operation slit 16 for operation. It is exposed to the top and bottom of the body 10 through. The release body 34 is rotatably held in the base 1, and when the front end of the operation lever 34b is moved forward, the release body 34 rotates, and the lock pieces 31b, 32b, and 33b are pressed. The pressure is applied from the piece 34a to bend in the direction away from the contact pieces 31a, 32a, 33a. Therefore, when the operation lever 34b is operated forward with the external wires 5 connected to the terminal plates 31, 32, 33 as described above, the lock pieces 31b, 32b, 33b are moved to the external wires 5; It is bent so as to be spaced apart from) so that mechanical holding of the external wire 5 is released, so that the external wire 5 can be taken out of the base 1.

The contact device 40 described above is composed of two contact holding pieces 45 and 46 each having fixed contacts 41a and 41b formed at one end disposed in the central storage chamber 13c, and a plate-shaped conductive plate described later. The front surface of the site | part which is provided with the switching element 43, and the other end of each contact holding piece 45 and 46 is arrange | positioned along the opening surface of the body 10 in the connection piece 31c of the terminal boards 31 and 32, respectively. Overlaid on the caulking. One ends of the contact holding pieces 45 and 46 are disposed to face each other, and the fixed contacts 41a and 41b face each other. In addition, the opening and closing element 43 has movable contacts 42a and 42b on both sides in the thickness direction, and the movable contacts 42a and 42b to the respective fixed contacts 41a and 41b according to the rotation of the opening and closing element 43. Is selectively contacted. That is, while the movable contact 42b is in contact with the stationary contact 41a, while the movable contact 42b is far from the stationary contact 41b, and the movable contact 42b is in contact with the stationary contact 41b. The silver movable contact 42a is far from the fixed contact 41a.

In addition, the contact device 40 includes a connecting piece 47 that is caulked and fixed to the entire surface of the connecting piece 33c of the terminal plate 33 that is disposed along the opening surface of the body 10, and the connecting piece 47. The support piece 49 is extended in the form along the inner bottom face of the body 10 from the rear end edge of the connecting piece 48 extended toward the rear from the edge at the center storage chamber 13c side in At the distal end of the piece 49, a V-shaped point groove (not shown) having an open front surface is formed in a form orthogonal to the extending direction of the support piece 49. As shown in FIG. Here, the contact device 40 is inserted into the point groove formed in the support piece 49 of the rear end of the opening and closing element 43 described above, the opening and closing element 43 is centered around the point groove It is rotatable. On the inner bottom face of the central storage chamber 13c of each unit unit chamber 13 in the body 10, a pair of retaining walls 19 for holding the opening and closing elements 43 protrude forward, and both hold. On the opposite surfaces of the wall 19, since the V-shaped rotation control groove 19a into which the protruding pieces 43a protruding at the side edges of the opening and closing element 43 can be inserted is formed, the rotation control groove 19a is formed. By this, the rotation range of the switching element 43 is regulated. An inversion spring 44 made of a coil spring is held between the opening and closing element 43 and the inversion handle 50, and a spring sheet piece inserted into one end of the inversion spring 44 at the front end of the opening and closing element 43. 43b protrudes.

The other end of the reversing spring 44 is inserted into a cylinder 51 provided on the rear side of the reversing handle 50. Point protrusions 52 protrude from both sides of the inversion handle 50 in the left and right directions of the base 1, and each of the point protrusions 52 is formed in a shape in which the front end portion is tapered. In the bottom wall of the above-mentioned recessed part 22 formed in the cover 20, the pair of bearing protrusions 24 which protrude forward from the circumferential edge of the opening window 23 in the left and right both sides of each opening window 23 is provided. A bearing recess 25 is formed on the opposite surface of both bearing protrusions 24 to insert the point protrusion 52 of the inversion handle 50. The bearing recess 25 pivotally pivots the point protrusion 52 at least at the front end.

On both ends of the above-mentioned longitudinal direction of the engaging handle 54, the engaging claw 61a provided in the front end (rear end) of the engaging leg 61 (refer FIG. 7) which protrudes from the back surface of the operation handle 60 is carried out. The hanging coupling claw 54a protrudes, and a slit 54b into which a rib 63 (see Fig. 10) protruding from the rear surface of the operation handle 60 is inserted is formed at the central portion of the coupling handle 54 in the longitudinal direction. It is. On the other hand, the contact ribs 62 protruding from the rear surface of the operation handle 60 in contact with the front surface of the coupling handle 54. Therefore, the operation handle 60 can be attached to the engaging handle 54 without shaking. Moreover, the engaging handle 54 is formed so that it may not interfere with the inner bottom face of the recessed part 22 of the cover 20 at the time of rocking | fluctuation.

In addition, at one end in the vertical direction of the cover 20, three through-holes 28 for transmitting light from the indicator light 71 of the indicator block 70, which will be described later, are spaced apart in the left and right directions, On the front side of the cover 20, a belt-shaped lens block 80 having three lens portions 81 into which the rear portion is inserted into each of the perforations 28 is integrally mounted. Therefore, the light from the position indicator 71 is guided to the outside through the lens portion 81. Here, the lens block 80 is located above the manipulation handle 60 and is located between the inner circumferential surface of the window hole 91 of the makeup plate 90 and the outer circumferential surface of the manipulation handle 60. In addition, in this embodiment, the lens part 81 comprises the display part which emits the light of the indicator light 71 to the outside, The lens part 81 which is a display part in the up-down direction of the base body 1 is an operation handle ( 60, the state of the indicator 71 can be visually recognized through the display unit irrespective of the operation position (upper end, lower end) of the operation handle 60.

By the way, the above-mentioned light block 70 is arrange | positioned outside the base | substrate 1, Comprising: The light indicator 71 which consists of neon lamps which light up in connection with the contact switching of the contact apparatus 40, and the light indicator 71 A pair of connecting wires 75 connected to a pair of leads 71a of the same, and a resistance for current limit inserted between one lead 71a and one connecting line 75 72 and the lamp case 73 of the synthetic resin molded article from which the position indicator 71 and the resistor 72 are stored and the above-described pair of connection lines 75 are derived, and the ends of each of the connection lines 75 The connector part 76 which accommodated a part of the contactor 77 electrically connected and elastically contacted with the connection piece 31c, 32c of the terminal boards 31, 32 mentioned above in the housing | casing 76a of a synthetic resin molded article is provided. In this case, since the insulating rib 73a that isolates the pair of leads 71a of the indicator lamp 71 continuously and integrally protrudes from the inner surface of the lamp case 73, a separate member is not used. The insulating distance between the pair of leads 71a of the indicator light 71 can be easily ensured. Moreover, in this embodiment, two terminal boards 31 and 32 of the above-mentioned three terminal boards 31 and 32 and 33 comprise the terminal to which the terminal side of the connection line 75 is connected, and the terminal board 31, 32 constitutes an external wire connecting portion for connecting the external wires 5 to the contact pieces 31a and 32a and the lock pieces 31b and 32b, and is arranged along the partition wall 14 in the connecting pieces 31c and 32c. The rear end of the portion constitutes connection line connecting portions 31d and 32d for connecting the end side of the connection line 75. However, in this embodiment, the connection which connects the external wire connection part which connects the external wire 5, and the terminal side of the connection line 75 to the terminal boards 31 and 32 which are terminals which are connected to the connection line 75, respectively. Since the wire connection portions 31d and 32d are provided, it is not necessary to press the connection line 75 of the indicator block 70 when the external wire 5 is connected to the terminal plates 31 and 32. Since the connection work of the external wire 5 can be performed irrespective of the connection line 75 of the back block 70, the connection work of the external wire 5 becomes easy. Moreover, since each connection line connection part 31d, 32d is comprised by the part of the connection piece 31c, 32c which is hard to be deformed compared with the contact piece 31a, 32a and the lock piece 31b, 32b, each connection line 75 The contact 77 of the connector portion 76 provided on the distal end side of the N-axis) 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 notch grooves 73b in the front-rear direction in which the front end is opened, and a portion between the two notch grooves 73b is flexible in the thickness direction. Each coupling piece 29a of the case coupling portion 29 formed of a pair of coupling pieces 29a protruding from the rear surface of the cover 20 on the outer surface of the front end of the bending piece 73c. The engaging projection 73d which is unevenly coupled to the engaging hole 29b formed in the projection protrudes. Therefore, the lamp case 73 uses the elasticity of the bending piece 73c to unevenly couple the engaging projection 73d to the engaging hole 29a formed in the engaging piece 29, thereby covering the cover 20 of the base 1. It is intended to be coupled to. In this state, the indicator light 71 is positioned to face the rear edge of the lens unit 81 described above. Moreover, in this embodiment, the terminal device which uses the contact device 40 and the three terminal boards 31, 32, and 33 as one set, and the case which uses two sets of the operation handle 60 and the coupling piece 29a as one set is mentioned. Three attachment portions 29 are provided in the same direction (left and right directions of the base 1), respectively, and the base 1 has a coupling piece facing each other of adjacent case attachment portions 29 in the same direction. Since a misinsertion prevention rib 29c (see Fig. 13) is installed to prevent the lamp case 73 from being inserted between 29a), the lamp case 73 is prevented from being attached to the wrong position of the body 1. can do. Moreover, since the inclined surface which reduces the protrusion amount from the outer side of the curved piece 73c is formed in the front side of the engaging projection 73d in the lamp case 73, the engaging projection 73d is combined with the engaging piece 29a. Can be easily coupled to the coupling hole 29b. In addition, in this embodiment, although the engagement hole 29b formed in the engagement piece 29a of the cover 20 and the engagement protrusion 73d formed in the lamp case 73 are unevenly coupled, the engagement piece of the cover 20 Uneven coupling may be performed by forming engaging projections at 29a and forming engaging holes in the lamp case 73.

Moreover, as for the contact 77 of the connector part 76, the front-end | tip part of the part which protruded from the housing 76a is bent in a J shape, and the partition wall in the connection piece 31c, 32c of the terminal boards 31, 32 is carried out. Elastic contact is possible with the surface on the opposite side to the lock piece 31b, 32b side in the thickness direction of the part arrange | positioned along (14).

In addition, the housing 76a is provided on the rear surface of the body 10 in the present embodiment by using the elasticity of the housing 76a of the connector portion 76 at a position corresponding to each of the connection line connecting portions 31d and 32d. An insertion recess portion 10a to be inserted is formed, and the attachment claw 76b protruding from the side of the housing 76a is unevenly coupled to the retaining groove 10b communicating with the insertion recess portion 10a. Accordingly, the housing 76a of the connector portion 76 can be easily inserted into the insertion recess portion 10a, and the contactor 77 is inserted by inserting the housing 76a of the connector portion 76 into the insertion recess portion 10a. ) Is elastically contacted with the connection line connecting portions 31d and 32d so that the end side of the connecting line 75 is connected to the connecting line connecting portions 31d and 32d, so that the connection work to the connecting line connecting portions 31d and 32d becomes easy. .

As described above, each connector portion 76 is connected to the terminal plates 31 and 32 from the rear of the base 1, so that the indicator light 71 and the resistor 72 are connected between the two fixed contacts 41a and 41b. The serial circuit can be inserted. The three-way switch is often used for lighting and turning off the stairs, and the three-way switch of the present embodiment is arranged above and below the stairs so that the lighting and turning off of the stairs can be operated from above and below the stairs. can do. Since the connection relationship of this kind of circuit is well-known, it abbreviate | omits description.

Embodiment 2

Hereinafter, the switch of this embodiment is demonstrated, referring FIG. 16 and FIG.

The basic structure of the switch of this embodiment is substantially the same as that of Embodiment 1, and the dimension of the left-right direction of the body 10 is approximately 1/3 of the body 10 in Embodiment 1, and the contact apparatus 40, The terminal blocks 31, 32, 33, the reversing handle 50, the return spring 44, the operation handle 60, the display block 70, etc. are provided only one by one, etc. are different. On the other hand, the operation handle 60 in this embodiment is formed in the dimension of the left-right direction about 3 times the dimension of the left-right direction of the operation handle 60 in Embodiment 1, and it is one makeup plate. Most of the window holes 91 of 90 are covered. The other configuration is the same as that of the first embodiment. 16 and 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 illustrated as a switch, but the idea of the present invention is not limited to the three-way switch, and can be applied to, for example, a disconnection type switch and the like. The relationship between the contact switching of 40 and the change of state of the indicator light 71 is not particularly limited.

In the invention of claim 1, when the external wire is connected to the terminal, it is not necessary to press the connection line of the indicator block and the connection of the external wire can be performed regardless of the connection line of the indicator block. There is an effect that work becomes easy.

1 shows Embodiment 1, which is a cross-sectional view of main parts in a state where external wires are connected.

Fig. 2 is a sectional view of principal parts showing Embodiment 1;

3 shows Embodiment 1, (a) is a sectional view of the main part, and (b) is an enlarged view of the main part A of (a).

4 is an exploded perspective view showing the first embodiment.

Fig. 5 is a front view showing the first embodiment.

6 is a side view showing Embodiment 1. FIG.

7 is a cross-sectional view showing the first embodiment.

8 is a cross-sectional view showing the first embodiment.

9 is a perspective view showing Embodiment 1;

10 is a sectional view showing the first embodiment.

11 shows Embodiment 1, and (a) and (b) are main cross-sectional views.

12 is a front view of a main part of the first embodiment with the cover and the like removed.

Fig. 13 is a rear view of the cover in the first embodiment.

14 is a partial cross-sectional view of the display block in the first embodiment.

Fig. 15 is a perspective view of two terminal plates in the first embodiment.

16 is an exploded perspective view showing the second embodiment.

17 is a front view of Embodiment 2;

Fig. 18 shows a conventional example, where (a) is a rear view and (b) is a side view.

Fig. 19 is a plan view of a display block used in the conventional example.

(Explanation of the sign)

1: Gas 5: External wire

10: body 14: partition wall

20: Cover 31, 32, 33: Terminal board

31a, 32a, 33a: contact piece 31b, 32b, 33b: rock piece

31c, 32c, 33c: Connection 31d, 32d: Connection

70: indicator block 71: indicator

73: lamp case 75: connection line

76: connector portion 77: contactor

81: lens unit 90: cosmetic plate

Claims (7)

A body containing a contact device, a plurality of terminals electrically connected to the contact device to connect external wires, an operation handle provided on the front side of the body to perform contact switching of the contact device, and contact change of the contact device An external wire for connecting an external wire to a terminal to which a connection line is connected, among which the connection block is connected to the light and has a pair of connection wires connected to the indicator light, and a light block disposed outside the body. A switch comprising a connecting line connecting portion for connecting the connecting portion and the distal side of the connecting line. According to claim 1, wherein the light block is provided with a lamp case of a synthetic resin molded article that receives the indicator light and the connection line is derived, the lamp case and the coupling hole formed in the coupling piece provided on one side of the base and the lamp case; And a coupling protrusion formed on the other side. 3. The terminal device according to claim 2, wherein the contact device, the terminal device having the plurality of terminals as one set, and the case attaching portions having the operation handle and the coupling piece two as one set are provided in the same direction, three in each, respectively. The substrate is provided with a misinsertion prevention rib which prevents the lamp case from being inserted between the engaging pieces facing each other adjacent to each other in the same direction. The switch of claim 2, wherein the lamp case is provided with an insulating rib for isolating the pair of leads of the indicator light. 2. The terminal of claim 1, wherein the terminal is a terminal plate disposed in the body, the contact piece elastically contacting the external wire introduced into the body through a wire insertion hole penetrated through the body, and in a direction proximate to the contact piece. A lock piece for pressing and holding the external wire between the contact piece and a connection piece for connecting the contact piece and the lock piece, wherein the external wire connection part is composed of a contact piece and a lock piece, and the connection line connection part is connected by a connection piece. The switch characterized in that the configuration. The said light block is provided with the connector part in which the terminal of each said connection line was electrically connected, and the part which contact | connected the contact line part which can be elastically contacted is accommodated in the housing, The said base | substrate is provided with the said connection part. And a concave portion into which the housing is inserted by using the elasticity of the housing at a position corresponding to the wire connecting portion, and an attachment claw protruding from the side of the housing is unevenly coupled to the holding groove communicating with the insertion concave portion. The switch according to claim 1, wherein the base is provided with a display portion for outputting light of the indicator light to the operation handle.