JP2002163954A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch wherein a fixing strength of a contact unit for a terminal plate is enhanced. SOLUTION: The contact unit 47 is fixed to coupling pieces 45c, 46c of terminal plates 45, 46 housed in a body 10. The contact unit 47 contacts with a circuit board 70 installed at an inversion handle 50, and connects the position displaying light mounted on the circuit board 70 to the terminal plates 45, 46. The contact unit 47 has a mounting piece 47a overlapped with a front face of the coupling pieces 45c, 46c, and an extending piece 47f extended from the mounting piece 47a is pinched between a pressing piece 27 of the cover 20 and the coupling pieces 45c, 46c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch provided with a position indicator light that lights when a load is not energized.

[0002]

2. Description of the Related Art Heretofore, a switch used for turning on / off a lighting load has a built-in position indicator light that is turned on when the lighting load is turned off. As this type of switch, for example, a changeover switch called a three-way switch as shown in FIG. 6 is conventionally known. The illustrated switch is formed by connecting a body 10 having an open surface on one side and a cover 20 holding a swinging reversing handle 50 to form a body 1, and the body 10 is provided with a terminal device. The three terminal boards 32, 45, and 46 constituting the terminal are housed. Fixed contacts 41b (one fixed contact is present at a position not visible in the figure) are held by the terminal plates 45 and 46, respectively, and the fixed contacts 41b face each other. An open / close element 40 'is swingably supported on the remaining terminal plate 32, and two open / close elements 40' are inserted between the fixed contacts 41b and can be separated from and connected to the fixed contacts 41b. The movable contact 42a (one movable contact exists at a position that cannot be seen in the figure) is held. The opening / closing element 40 'holds a reversing spring 44 between itself and the reversing handle 50. When the reversing handle 50 swings, the opening / closing element 40' swings, and each movable contact 42a becomes a corresponding fixed contact 41b. Is configured to selectively contact the That is, the state in which the electric path between the terminal plate 32 and the terminal plate 45 is closed with the swing of the reversing handle 50 and the state in which the terminal plate 32
6 is selected.

[0005] A circuit board 70 is mounted on the reversing handle 50, and a position indicating lamp 71 composed of a neon lamp is mounted on the circuit board 70. An operation handle 60 is integrally connected to the front side of the inversion handle 50, and the inversion handle 50 and the operation handle 60 constitute a switch handle. A prism 63 for taking out light from the position indicating lamp 71 is attached to the operation handle 60, and a makeup handle line 64 is attached to the operation handle 60 along one side edge. Part of the prism 63 described above is exposed from the handle line 64.

In the three-way switch, a position indicating lamp 71 is inserted between the fixed contacts 41b, and the position indicating lamp 71 swings with respect to the body 1 together with the reversing handle 50. , 46 and a circuit board 70 are provided with contacts 47 for electrical connection. The contact 47 is formed of an elastic material so that one end is fixed to the terminal plates 45 and 46 and the other end is in elastic contact with the circuit board 70.

[0005] Specifically, as shown in FIGS. 7 and 8, the contact 47 is attached to the body 10 by the terminal plates 45 and 46.
Cover 2 at connecting pieces 45c, 46c along the opening surface of
A mounting piece 47a that overlaps the surface on the 0 side is provided, and a connecting piece 45c,
A locking piece 47b having a U-shaped cross section surrounding the side of 46c is integrally provided, and a clipping piece 4 extended along the side surface of the connecting pieces 45c, 46c as a connecting part at the other side edge of the mounting piece 47a.
7c and a locking claw 47d formed by cutting and raising the sandwiching piece 47c are integrally provided. Therefore, after the locking piece 47b is hooked on the side of the connecting pieces 45c, 46c, the mounting piece 47a is connected to the connecting pieces 45c, 46 while the holding piece 47c is brought into contact with the side edge of the connecting pieces 45c, 46c.
c, the locking claws 47d are brought into contact with the connecting pieces 45c, 46c.
c, the contact 47 is connected to the terminal plate 4.
5, 46 will be fixed. By employing such a structure, the operation of attaching the contact 47 to the terminal plates 45 and 46 is simplified, and the assembly operation is facilitated.

[0006]

In the above-described configuration, although the contact 47 is held at the left and right sides of the connecting pieces 45c and 46c of the terminal plates 45 and 46, the locking pieces 4 are held.
7b is only locked by hooking on the connecting pieces 45c, 46c.
Since only the line contacts c and 46c are in line contact, the fixing strength of the contact 47 to the terminal plates 45 and 46 is relatively small, and the force acting on the contact 47 as the reversing handle 50 swings. The contact 47 may rattle against the terminal plates 45 and 46.

The present invention has been made in view of the above circumstances, and an object of the present invention is to increase the strength of fixing a contact to a terminal plate without complicating the work of attaching the contact to the terminal plate as compared with the conventional configuration. An object of the present invention is to provide a switch which is strong and prevents rattling of a contact to a terminal plate.

[0008]

According to a first aspect of the present invention, there is provided a body formed by a body having an opening surface on one side and a cover joined to the opening surface side of the body, and a swingably provided on the cover. Handle, a plurality of terminal plates housed in the body to which electric wires are connected, a contact device housed in the body to open and close the electric path between the terminal plates as the handle swings, and a power supply and load attached to the handle A position indicator light that is energized from a power supply in a state where the contact device is opened when an electric path in which the contact device is inserted is formed between
A contact that has one end fixed to one terminal plate and the other end resiliently contacts a conductive portion of the circuit board on which the position indicator light is mounted, thereby electrically connecting the terminal plate and the position indicator light; The terminal plate to which is fixed has a connecting piece along the opening surface of the body, the one end of the contact has a mounting piece overlapping the cover-side surface of the connecting piece, and is connected to both sides of the connecting piece. Coupling portions are provided on both side edges of the mounting piece, and the contact piece is sandwiched between the holding piece and the connecting piece protruding from the cover on a peripheral edge different from the side edge provided with the bonding portion in the mounting piece. An extension piece is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, a connecting portion provided on one side edge of the mounting piece is formed in a U-shaped cross section surrounding one side of the connecting piece. A stop piece, a coupling portion provided on the other side edge of the mounting piece is formed by cutting and raising a clip piece and a clip piece extended along the other side surface of the connection piece, and is formed on the back side of the mounting piece. It is a locking claw to be locked.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, three terminal plates are housed in the body, and selectively contact fixed contacts held by the two terminal plates. The movable contacts are electrically connected to the remaining terminal plates, and the contacts are respectively fixed to the two terminal plates holding the fixed contacts.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments described below,
A single-pole, double-throw switch (three-way switch) is exemplified.
The technical concept of the present invention can be applied to switches having other configurations.

The switch shown in FIGS. 1 to 3 has a rectangular parallelepiped synthetic resin molded body 10 having an open front surface (the upper surface in FIG. 2), and is formed in a rectangular frame shape and coupled to the front surface of the body 10. The container 1 includes a synthetic resin molded product cover 20. 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 body 10 and the cover 20 are connected by engaging the assembly protrusion 11 with the assembly hole 21a provided in the assembly tongue piece 21.

The body 10 has three terminal devices 30b, 30c, and 30d for connecting wires inserted into the body 1 through wire insertion holes 12 provided in the rear wall of the body 10.
And a contact device 40 for selecting between a state in which an electric circuit between the terminal devices 30b and 30c is closed and a state in which an electric circuit between the terminal devices 30b and 30d is closed. 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 opens and closes the electric circuit. An operation handle 60 of a synthetic resin molded product overlapping the front surface of the cover 20 is detachably connected to the front side of the inversion handle 50, and the inversion handle 50 swings by swinging the operation handle 60 as an operation unit. The contact device 40 is opened and closed. That is, the reversing handle 50 and the operation handle 60 function integrally as a handle.

A terminal device 30 is provided on the inner surface of the body 10.
A plurality of holding ribs 13 and holding grooves 14 for positioning the b, 30c, 30d and the contact device 40 are formed. Terminal device 30b and terminal devices 30c, 30
“d” is disposed in each of the longitudinal ends of the body 10, and the contact device 40 is disposed in the central portion of the body 10 in the longitudinal direction.

The terminal devices 30b, 30c, and 30d have terminal plates 32, 45, and 46 formed of conductive metal plates, respectively. The terminal device 30b includes two lock springs 33 corresponding to the terminal plate 32, and one release button 34 of a synthetic resin molded product that comes into contact with both the lock springs 33. On the other hand, the terminal devices 30c and 30d are provided with one locking spring 33 corresponding to the terminal plates 45 and 46, respectively, and one release button 34 of a synthetic resin molded product that abuts on both locking springs 33. Prepare. Each terminal board 32, 45, 4
6 are main pieces 32a, 45a and 46a whose sides are inserted and held in holding grooves 14 provided in the widthwise inner surface of the body 10 near both ends in the longitudinal direction of the body 10, and main pieces 3 respectively.
Abutment pieces 32b, 45 facing 2a, 45a, 46a
b, 46b, main pieces 32a, 45a, 46a and contact pieces 3
There are provided connecting pieces 32c, 45c, and 46c extending along the opening surface of the body 10 so as to continuously and integrally connect the front edges with the front ends 2b, 45b, and 46b. Contact piece 3
2b, 45b, and 46b abut on a holding rib 13 formed on the inner surface in the width direction of the body 10 near the center in the longitudinal direction of the body 10, and each terminal board 32 is held between the holding rib 13 and the holding groove 14. , 45, 46 are held by the body 10, respectively. Furthermore, contact holding pieces 45d, each of which has a fixed contact 41a, 41b provided at the tip end thereof, are integrally and continuously extended from the connecting pieces 45c, 46c respectively.
46d is provided. The tips of the contact holding pieces 45d, 46d of the terminal devices 30c, 30d are arranged so as to face each other, and the fixed contacts 41a, 41b face each other. A support piece 32d extends from the rear end edge of the contact piece 32b to the longitudinal center of the body 10 along the rear surface of the body 10 on the terminal plate 32. Is a supporting piece 32 having a fulcrum groove 32e having a V-shaped cross section opened at the front.
It is formed so as to be orthogonal to the extension direction of d.

The locking spring 33 is composed of main pieces 32a, 45a, 46.
and between the contact pieces 32b, 45b, 46b. The locking spring 33 is formed by bending one end of a band-shaped leaf spring into an S shape to form a contact piece 33a and bending the other end into a J shape to form a locking piece 33b. Piece 33a and lock piece 33
b is formed in a shape that is continuously and integrally connected with the connection piece 33c. Also, the contact piece 33a and the lock piece 33b
Project from the connection piece 33c on the same side in the thickness direction.
The locking spring 33 is connected to the main piece 32 of each of the terminal boards 32, 45 and 46.
a, 45a, 46a and the contact pieces 32b, 45b, 46b, the connecting piece 33c is attached to the contact piece 32b.
The contact piece 33a and the lock piece 33b are opposed to the main pieces 32a, 45a, 46a so as to abut against the main pieces 32a, 45a, 46b. Here, the distal ends of the contact piece 33a and the lock piece 33b are inclined so as to be farther away from the connecting piece 33c toward the distal end, and are extended so as to be substantially parallel to each other. Further, the distal ends of the contact piece 33a and the lock piece 33b are arranged such that the distance from the connecting pieces 32c, 45c, 46c decreases toward the distal end.

The above-described wire insertion hole 12 is provided with a terminal plate 32,
45, 46 of main pieces 32a, 45a, 46a and contact pieces 33
When the electric wire is formed in the body 1 through the electric wire insertion hole 12 when the electric wire is inserted into the body 1 between the main piece 32a, 45a, 46a, the contact piece 33a and the lock piece 33a. The terminal device 30 is sandwiched between the terminal device 30 and the main piece 32a, 45a, 46a.
The wires b, 30c, and 30d are electrically connected to the wires, and are mechanically held so that the leading edges of the locking pieces 33b bite into the wires so that the wires do not fall out of the body 1. In particular, the locking pieces 33b are attached to the main pieces 31b, 45b, 46b in the direction of inserting the electric wire through the electric wire insertion hole 12.
And the locking piece 33b is unlikely to bend against the force of pulling out the wire,
The wire is surely prevented from being pulled out. here,
The electric wire is an insulated wire, and the portion of the wire to be inserted into the housing 1 is stripped of the insulating coating so that the core wire is exposed. Therefore, the fact that the electric wire is clamped between the main pieces 32a, 45a, 46a and the locking spring 33 means that the core wire is actually clamped.

An operation hole 15 is formed in the rear wall of the body 10 at a position corresponding to the release button 34. One release button 34 is arranged between two locking springs 33 provided on the terminal device 30b, and one release button is provided on each of the terminal devices 30c and 30d.
One is disposed between two locking springs 33 provided individually. On each release button 34, two pressing pieces 34a respectively abutting on the rear side of the locking pieces 33b of the two locking springs 33 project from the side surfaces. The operation hole 15 has a shape such that a tool such as the tip of a flathead screwdriver can be inserted. When the tool is inserted into the operation hole 15 and the release button 34 is pressed forward, the lock piece 33b is moved from the push piece 34a. By receiving the pressing force, the main pieces 32a, 45a, and 46a are bent in a direction away from the main pieces. Therefore, if a tool is inserted into the operation hole 15 and the release button 34 is pressed while the electric wires are connected to the terminal devices 30b, 30c, and 30d as described above, the lock pieces 33b bend away from the electric wires. The mechanical holding of the electric wire is released, and the electric wire can be pulled out of the housing 1. Here, the release button 34 is provided with two pressing pieces 34a, and the two locking pieces 33b of the two locking springs 33 are provided.
Are simultaneously pressed, when two wires are connected to the terminal device 30b or when one wire is connected to the terminal devices 30c and 30d, respectively,
By pressing the release buttons 34, the mechanical holding of the two electric wires can be released simultaneously.

The contact device 40 includes a support piece 32 of the terminal plate 32.
The switching element 43 is provided with a plate-like switching element 43 pivotally supported with respect to the contact plate 45. Fixed contacts 41a, 41b provided on the contact holding pieces 45d, 46d of the terminal plates 45, 46 on both sides in the thickness direction of the switching element 43.
Are provided with movable contacts 42a and 42b which are separated from each other. The rear edge of the opening / closing element 43 is inserted into a fulcrum groove 32e provided on the support piece 32d, and the opening / closing element 43 is rotatable about the fulcrum groove 32e. When the switching element 43 rotates, each movable contact 42 is attached to each of the fixed contacts 41a and 41b.
a and 42b are selectively in contact with each other. That is, the fixed contact 41
a while the movable contact 42a is in contact with the movable contact 42b.
Is separated from the fixed contact 41b, and while the movable contact 42b is in contact with the fixed contact 41b, the movable contact 42a is
Move away from 1a. One end of the opening / closing element 43 is provided with the fulcrum groove 32.
e, the rotation center of the switching element 43 can be stabilized and the switching element 43 can be rotated stably. The central portion of the body 10 in the longitudinal direction and the body 10
A protruding piece 43a protruding from a side edge of the opening / closing element 43 is provided at a rear portion.
Is formed, and a rotation range of the opening / closing element 43 is regulated by the rotation regulation groove 16. A reversing spring 44 composed 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 protrudes from the front end of the opening / closing element 43. Is done.

The other end of the reversing spring 44 has a reversing handle 50
Is inserted into a tubular portion (not shown) provided on the rear surface side of the camera. The fulcrum projections 51 are provided on both sides of the reversing handle 50 in the width direction of the container 1, and each of the fulcrum projections 51 is formed to have a tapered front end. A pair of bearing projections 23 projecting forward from the peripheral edge of the opening window 22 are provided at both sides in the width direction at the center in the longitudinal direction of the cover 20. 50 fulcrum projections 5
A bearing recess 24 into which 1 is inserted is formed. Bearing recess 2
4 pivotally supports the fulcrum projection 51 at least at the front end. A through hole 52 for transmitting light from a position indicator lamp 71 to be described later is formed through one end of the reversing handle 50 in the longitudinal direction, and the operation handle 60 is reversed on both end surfaces of the reversing handle 50 in the longitudinal direction. Coupling claws 53 for coupling to the handle 50 are protrudingly provided.

At both ends of the cover 20 in the longitudinal direction, abutment ribs 25 projecting from the front surface of the cover 20 along the side edges of the both ends of the cover 20 are respectively protruded. 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 is, as shown in FIG.
A coupling leg 61 that covers a front surface of the reversing handle 50 and that is engaged with a coupling claw 53 provided on the reversing handle 50 protrudes from a rear surface of the operation handle 60. 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.
The reversing handle 50 is held between the leg 2 and the leg nail 61a,
As a result, the operation handle 60 is fixed to the reversing handle 50. Further, a prism 63 for guiding light from the position indicating lamp 71 to the outside is fixed to one end of the operation handle 60 in the longitudinal direction.

A circuit board 70 made of a synthetic resin molded product is held at the rear end of the reversing handle 50. On the circuit board 70, a position indicating lamp 71 composed of a neon lamp and a current limiting resistor (not shown) of the position indicating lamp 71 are mounted. A pair of contact conductive patterns (not shown) are formed as conductive parts on a rear surface of the circuit board 70 and at a portion corresponding to one longitudinal end of the reversing handle 50. A circular press-fitting hole 74 is formed at the center of the circuit board 70, and the cylindrical portion provided on the reversing handle 50 is press-fitted into the press-fitting hole 74, whereby the reversing handle 50 is formed.
The circuit board 70 is fixed to the substrate. In this state, the position indicator light 71 is
Through the prism 63. Both ends of a circuit (a series circuit of the position indicator lamp 71 and the resistor) mounted on the circuit board 70 are connected to the respective conductive patterns for contact.

The connecting pieces 45c, 46 of the terminal plates 45, 46
A contact 47 made of a conductive metal plate is fixed to c. Each contact 47 is connected to a connecting piece 45 as shown in FIG.
c, a mounting piece 47a to be mounted on the front of 46c
The connecting piece 45c is provided on one side edge of the mounting piece 47a.
A locking piece 47b having a U-shaped cross section is provided continuously and integrally as a connecting portion so as to surround one side of the mounting piece 47c, and the connecting piece 45c,
A sandwiching piece 47c extending along the other side surface of 46c is continuously and integrally provided as a connecting portion. In addition, pinch piece 4
A locking claw 47d, which is locked to the back side of the connecting pieces 45c and 46c, is formed on the 7c by cutting and raising.

Therefore, as shown in FIG.
The engaging pieces 47b are hooked on one side edges of the connecting pieces 45c and 46c, and the engaging claws 47d are hooked on the other side edges of the connecting pieces 45c and 46c.
Can be fixed to the contact 47. From one side edge of the mounting piece 47a of the contact 47 where the locking piece 47b and the holding piece 47c are not provided, a contact piece 47e elastically contacting the contact conductive pattern provided on the circuit board 70 also extends. By imparting appropriate elasticity to the contact piece 47e, the contact 47 always elastically contacts the circuit board 70 regardless of the swing of the reversing handle 50.

A connecting piece 45 is attached to the remaining side edge of the mounting piece 47a.
An extension piece 47f is provided to extend so as to overlap c and 46c. The extension piece 47f is provided near the locking piece 47b. This is because the locking claw 47d has elasticity and the mounting piece 47a and the locking claw 47d are provided on one side of the mounting piece 47a.
The connecting pieces 45c and 46c are sandwiched between the connecting pieces 45c and 46c, so that the contact 47 does not rattle against the connecting pieces 45c and 46c, whereas the other side of the mounting piece 47a has the connecting piece 45c.
This is because the locking pieces 47b are merely hooked on the members c and 46c, and a more reliable fixing structure is required.

As shown in FIG. 1, a pressing piece 27 is projected from the inner peripheral surface of the cover 20. When the cover 20 is connected to the body 10, the rear end face of the pressing piece 27 and the terminal plate 4
Extension piece 47f between connecting pieces 45c and 46c
Sandwich. That is, the extension piece 47f is connected to the terminal plates 45 and 46 and the cover 20 by the connection between the body 10 and the cover 20.
And the contact 47 is securely fixed.

The operation of the above switch will be briefly described. Now, it is assumed that when the right end of the operation handle 60 is located rearward (downward in the figure) of the left end as shown in FIG. 1, the movable contact 42a comes into contact with the fixed contact 41a. At this time, the reversing spring 44 is in a state where the intermediate portion is expanded to the left side from the both ends, and the movable contact 42a is pressed against the fixed contact 41a by the reversing spring 44 to apply a contact pressure. On the other hand, when the left end of the operation handle 60 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, so that the middle portion is larger than the both ends. At this time, the switching element 43 is tilted to the right and the movable contact 42
b is brought into contact with the fixed contact 41b. That is, the reversing spring 4
The spring force of 4b acts in a direction to rotate the reversing handle 50 counterclockwise, and a contact pressure for bringing the movable contact 42b into contact with the fixed contact 41b is generated.

This type of three-way switch is often used for turning on and off stair lights, and three switches are provided on the upper floor and the lower floor, respectively.
2. Description of the Related Art By arranging a road switch, applications for turning on and off a stair light both upstairs and downstairs have been widely used. Therefore, both fixed contacts 31
If a series circuit of the position indicating lamp 71 and the resistor is inserted between a and 31b, the position indicating lamp 71 can be turned on when the stair light is turned off, so that the location of the switch can be easily found even in the dark. become able to. The connection relationship of this type of circuit is well known, and therefore the description is omitted.

By the way, the terminal devices 30a, 30
The terminal plates 31 and 32 used for b are configured to be able to cope with the case where the core wire of the electric wire is a stranded wire. Specifically, the main pieces 32a, 45 of the terminal plates 32, 45, 46
a, 46a, near the tip of the locking piece 33b of the locking spring 33, on both sides of the portion where the locking piece 33b can contact and where the wire introduced into the body 1 through the wire insertion hole 12 contacts. Are provided with a pair of guide projections 38. The two guide projections 38 are arranged so as to be arranged in the width direction of the main pieces 32a, 45a, 46a. Therefore, when an electric wire whose core wire is a stranded wire is introduced from the electric wire insertion hole 12, even if the electric wire tries to spread apart, the wire gets over the guide protrusion 38 and the lock piece 33 b and the guide protrusion 38 The electric wire is securely held therebetween, and the electric wire is guided so as to pass between the two guide projections 38 as much as possible. In short, even if the electric wire is a stranded wire, it is possible to reduce the possibility that the electric wire spreads apart. Furthermore, the position of the guide projection 38 is the lock piece 33.
b, the electric wire is connected to the guide projection 3
Even when the vehicle rides on 8, the relatively large contact pressure can be applied to the electric wire from the lock piece 33b, and the electric connection of the electric wire can be reliably ensured.

[0031]

According to a first aspect of the present invention, there is provided a body formed by a body having an opening surface on one side and a cover coupled to the opening surface side of the body, a handle slidably provided on the cover, A plurality of terminal plates housed in the body to which the wires are connected, a contact device housed in the body that opens and closes the electrical path between the terminal plates as the handle swings, and a power supply and load mounted on the handle A position indicator light that is energized from a power supply in a state where the contact device is open when the electric circuit in which the contact device is inserted is formed, and a position indicator light having one end fixed to at least one terminal plate and the other end being A contact for electrically connecting the terminal plate and the position indicator light by elastically contacting the conductive portion of the mounted circuit board is provided.The terminal plate to which the contact is fixed has a connecting piece along the opening surface of the body. And the one end of the contact is connected A mounting piece that overlaps the surface of the piece on the cover side is provided, and coupling parts that are coupled to both side parts of the connecting piece are provided on both side edges of the mounting piece, and a side edge provided with a coupling part in the mounting piece of the contact further. Is provided with an extension piece sandwiched between a holding piece protruding from the cover and the connection piece on a different peripheral edge, and the terminal piece housed in the body and the holding piece provided on the cover are provided. Since the extension piece provided on the contact is sandwiched between the contacts, the fixing strength of the contact to the terminal plate is made stronger than in the conventional configuration without complicating the work of attaching the contact to the terminal plate, and the contact with the terminal plate is made stronger. There is an advantage that rattling can be prevented.

According to a second aspect of the present invention, in the first aspect of the present invention, the connecting portion provided on one side edge of the mounting piece is formed in a U-shaped cross section surrounding one side of the connecting piece. A stop piece, a coupling portion provided on the other side edge of the mounting piece is formed by cutting and raising a clip piece and a clip piece extended along the other side surface of the connection piece, and is formed on the back side of the mounting piece. The terminal plate is characterized in that it is a locking claw to be locked, and the terminal plate is a simple operation of locking the locking claw to the connecting piece while the locking piece is hooked on the connecting piece of the terminal plate. Can be attached to the contact.

According to a third aspect of the present invention, in the first or second aspect of the present invention, three terminal plates are housed in the body and selectively contact fixed contacts held by the two terminal plates. The movable contact is electrically connected to the remaining terminal plate, and the contact is fixed to each of the two terminal plates holding the fixed contact. In a three-way switch configuration, the power supply to the load is shut off. A position indicator light that is sometimes lit can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

3 (a) is a front view, FIG. 3 (b) is a bottom view, and FIG. 3 (c) is a side view.

FIG. 4 is a perspective view showing a contact used in the same.

FIG. 5 is a sectional view of a main part of the above.

FIG. 6 is an exploded perspective view showing a conventional example.

FIG. 7 shows the relationship between the terminal plate and the contact used in the above;
(A) is an exploded perspective view, (b) is a perspective view after assembling.

FIG. 8 shows a relationship between a terminal plate and a contact used in the above;
(A) is an exploded perspective view, (b) is a perspective view after assembling.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 10 Body 20 Cover 27 Pressing piece 32 Terminal board 40 Contact device 41a, 41b Fixed contact 42a, 42b Movable contact 45, 46 Terminal board 45c, 46c Connecting piece 47 Contact 47a Mounting piece 47b Locking piece 47c Nipping piece 47d Locking claw 47f Extension piece 50 Reversing handle 60 Operation handle 70 Circuit board 71 Position indicator

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kutsuna 1048 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. Inventor Hiroyuki Tateishi 1048 Kazuma Kadoma, Kazuma City, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. 1285 Gomono, Misato-mura, Aki-gun, Mie Prefecture F-term in Hayama Denki Mfg. Co., Ltd. 5G035 AA09 CA01 CB04 DA07 JA01 JB02

Claims (3)

[Claims] 1. A body formed by a body having an opening surface on one side and a cover coupled to the opening surface side of the body, a handle slidably provided on the cover, and an electric wire housed in the body and connected to an electric wire. A plurality of terminal plates, a contact device that is housed in the body and opens and closes an electric circuit between the terminal plates as the handle swings, and an electric circuit that is attached to the handle and has a contact device inserted between a power supply and a load. A position indicator light that is energized from a power supply with the contact device open when formed and a conductive portion of a circuit board having one end fixed to at least one terminal plate and the other end mounted with the position indicator light A contact for electrically connecting the terminal plate and the position indicator light by resiliently contacting the terminal plate; the terminal plate to which the contact is fixed includes a connecting piece along an opening surface of the body; Part is the surface of the connecting piece on the cover side With a mounting piece that overlaps with
A connecting portion to be connected to both sides of the connecting piece is provided on both side edges of the mounting piece, and the holding piece protruding from the cover on a peripheral edge different from the side edge provided with the connecting portion in the mounting piece of the contactor; A switch comprising an extension piece sandwiched between the connection piece and the connection piece. 2. A connecting portion provided on one side edge of the mounting piece is a locking piece formed in a U-shaped cross section surrounding one side of the connecting piece, and the other side of the mounting piece. The connecting portion provided on the edge is a holding piece extending along the other side surface of the connecting piece and a locking claw formed by cutting and raising the holding piece and locked on the back side of the mounting piece. Claim 1
The described switch. 3. The body contains three terminal plates,
A movable contact selectively contacting the fixed contact held on each of the two terminal plates is electrically connected to the remaining terminal plates,
The said contact is fixed to two terminal boards which hold | maintain a fixed contact, respectively, The Claim 1 or Claim 2 characterized by the above-mentioned.
The described switch.