JP2002222670A - Switch and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen a range of applicable wires and to enable to connect twisted wires. SOLUTION: The switch is structured by storing a first and a second terminal parts 61, 62 respectively, a connection point 8, and a switching mechanism part into a body 10 and providing an operating handle 38 in freely rocking movement to an outer part of the body 10. The terminal parts 61, 62 are equipped with terminal boards 11, 12, a lock spring 15 and an unlocking button 17, and is structured so as to widen a range of applicable wires and enable to connect core wires made of twisted wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, connection of electric wires has been facilitated,
2. Description of the Related Art A switch provided with a terminal having a so-called quick-connection structure that can be connected without using a screw has been provided for the purpose of making connections uniform and ensuring connection reliability.

FIG. 57 is an exploded perspective view showing a conventional switch with a part omitted, FIG. 58 is a side sectional view showing a part of the switch, and FIG.
9 is a side sectional view partially omitted. Substantially box-shaped synthetic resin body 1 'with an open front
And a cover 2 made of a synthetic resin attached to the front surface of the body 1 'to form a switch body. The inside of the body 1 'is divided into a plurality of sections by partition walls, and terminal storage chambers 9' for storing the terminal portions 6 'are provided on both sides. Terminal plates 11 'and 12' made of a conductive material are stored in the terminal storage chamber 9 '. Each terminal board 1
1 ′ and 12 ′ are U-shaped portions 13 ′ formed in a substantially U-shape.
The U-shaped portions 13 'and 14' each house a pair of lock springs 15 'to form a terminal portion 6'. An electric wire insertion hole 16 'communicating with each terminal storage chamber 9' is formed in the bottom surface of the body 1 '.

The locking piece 15b 'and the pressing piece 15c' of the lock spring 15 'are formed at both ends of a central piece 15a' by bending both ends of a strip of conductive material having elasticity. Also,
The U-shaped portions 13 ′ and 14 ′ of the terminal plates 11 ′ and 12 ′ respectively have central pieces 13 a ′ and 14 a ′ and central pieces 13 a ′.
central pieces 13a ', 14a' from both edges of a ', 14a'
Contact pieces 13b 'projecting in a direction substantially orthogonal to
14b 'and contact pieces (main pieces) 13c' and 14c '. The central piece 15a 'of the lock spring 15' is in contact with the contact piece 13b 'of the terminal plate 11', and the lock piece 15b 'is formed in a U-shaped portion 13 from the connection portion with the central piece 15a' toward the distal end edge. The pressing piece 15c 'is inclined in a substantially S-shape so as to approach the contact piece 13c' of the lock spring 15 '.
The lock piece 15b 'and the pressing piece 15c' provided on the side face the contact piece 13c 'of the U-shaped portion 13'.

When connecting an electric wire to the terminal portion 6 ', as shown in FIG.
When the cable 1 is inserted through the wire insertion hole 16 ', the core wire is provided between the lock piece 15b' and the pressing piece 15c 'of the lock spring 15' and the contact piece 14c 'of the terminal plate 12' by the spring force of the lock spring 15 '. 101 is pinched, and the leading edge of the lock piece 15b 'is the core wire 1.
Biting into 01 causes the core wire 101 to be prevented from coming off in the direction opposite to the insertion direction. Therefore, by simply inserting the core wire 101 of the electric wire 100 into the electric wire insertion hole 16 ', the core wire 101 of the electric wire 100 is held and the electrical connection to the terminal plate 12' is made. In each terminal storage chamber 9 ', a lock piece 1 of a pair of lock springs 15' is provided.
A release button 17 'is housed opposite to 5b'. To remove the core wire 101 of the electric wire 100 connected to the terminal portion 6 ', insert a tool such as a flathead screwdriver through an operation hole formed in the bottom surface of the body 1', and press the release button 17 '. Since the projection 17a 'of the release button 17' presses the lock piece 15b 'and deflects the lock piece 15b' away from the contact piece 14c 'of the terminal plate 12', the lock piece 15b ' Thus, the core wire 101 can be easily pulled out.

[0006]

However, in the above-mentioned conventional switch, the range of the applicable electric wire (the core wire 1 that can be connected) is determined due to the strength of the conductive material forming the lock spring 15 '.
01 diameter range). Further, even when a core wire made of a stranded wire is inserted, the pressing piece 15c 'does not bend and the core wire is separated, so that an electric wire having a stranded wire as a core wire could not be connected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a switch capable of expanding the range of applicable electric wires and capable of connecting electric wires having a stranded wire as a core wire, and a method of manufacturing the same. Is to provide.

[0008]

According to the first aspect of the present invention, in order to achieve the above object, the first and second terminal portions can expand the range of applicable electric wires and can connect a core wire made of a stranded wire. In addition, the range of applicable electric wires can be expanded, and the connection of electric wires having stranded wires as core wires becomes possible.

According to a second aspect of the present invention, in the first aspect of the present invention, the lock spring is formed by bending an elastic conductive plate to form a central piece disposed to face the terminal plate.
A lock piece inclined from the connection portion with the central piece toward the terminal edge toward the terminal edge; and a lock portion extending from the connection portion with the central piece toward the terminal plate and having a distal end portion having a core wire. Is pressed toward the terminal plate to form a pressing piece that elastically clamps a core wire between the terminal plate and the terminal plate, and this pressing piece is located closer to the distal end than the connection portion with the center piece. It is characterized by being bent so that the distance from the central piece is the narrowest. Can be longer. For this reason, the force required to deflect the pressing piece is reduced, so that the range of the applicable electric wire can be expanded and the stranded wire can be connected.

According to a third aspect of the present invention, in the second aspect of the present invention, the distal end of the pressing piece that comes into contact with the core wire is arranged near the distal end edge of the lock piece. When the core wire is inserted between the lock piece and the terminal piece, the distal end portion of the lock piece bent in a direction away from the terminal plate comes into contact with the distal end portion of the pressing piece to bend the pressing piece. As a result, the feeling of insertion of the core wire at the time of connection is improved, and insertion failure of the core wire can be prevented.

According to a fourth aspect of the present invention, in the second aspect of the present invention, a portion of the pressing piece facing the locking piece is curved in a direction away from the locking piece, and the locking button is pressed by a release button. When the piece is bent, the lock piece can be prevented from interfering with the pressing piece, and the release operation with the release button can be easily performed.

According to a fifth aspect of the present invention, in the second aspect of the present invention, the lock spring is formed such that a gap is formed between the leading edge of the lock piece and the terminal plate without inserting a core wire. This is characterized in that a gap is provided between the leading edge of the locking piece and the terminal plate, so that the stranded wire can be easily inserted.

According to a sixth aspect of the present invention, in the second aspect of the present invention, the tip of the pressing piece is provided with a plurality of rounds protruding in a direction in contact with the core wire. Since the contact position between the core wire and the pressing piece changes accordingly, the rotation of the lock spring can be prevented and the holding of the core wire can be stabilized.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the portions of the terminal plate and the lock spring that come into contact with each other along the core wire insertion direction are formed substantially flat,
Since the terminal plate and the lock spring abut on a substantially flat portion, rotation of the lock spring when the core wire is inserted can be prevented, and holding of the core wire can be stabilized.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the lock spring is provided with a fitting groove for fitting with a projection projected from the body. Since the lock spring and the fitting groove of the lock spring are fitted, rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized.

According to a ninth aspect of the present invention, in the first aspect of the present invention, a support piece for supporting the lock spring in contact with the container is provided on the lock spring. Since the lock spring is supported by contacting the core wire, rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized.

According to a tenth aspect of the present invention, in the first aspect of the present invention, a locking portion for locking the body is provided on the lock spring, and the locking portion of the lock spring is provided on the body. Since the locking is performed, the rotation of the lock spring when the core is inserted can be prevented, and the holding of the core can be stabilized.

According to an eleventh aspect of the present invention, in the invention of the tenth aspect, a support piece for supporting the lock spring in contact with the container is provided on the lock spring. Since the lock spring is supported by contact, the rotation of the lock spring when the core wire is inserted can be more reliably prevented, and the holding of the core wire can be further stabilized.

According to a twelfth aspect of the present invention, in the first aspect of the present invention, the lock spring is provided with a fitting piece that fits into a groove provided in the body. Since the piece is fitted into the groove of the container, the rotation of the lock spring at the time of inserting the core wire can be prevented, and the holding of the core wire can be stabilized.

According to a thirteenth aspect, in the twelfth aspect, a plurality of the fitting pieces are provided at symmetrical positions of the lock spring, and the fitting pieces are provided at symmetrical positions. Because there is no need to consider the direction at the time of assembly,
The assemblability can be improved.

The invention of claim 14 is the invention of claim 12 or 13
In the invention, the fitting pieces of a plurality of lock springs adjacent to each other in the body are connected and integrally formed, so that the number of parts can be reduced and the assemblability can be improved.

According to a fifteenth aspect of the present invention, in the first aspect of the present invention, a holding portion for holding the lock spring is provided on the terminal plate. The rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized.

According to a sixteenth aspect of the present invention, in the first aspect of the present invention, a pair of guide projections is provided on a surface of the terminal plate where the core wire comes into contact, on both sides of a portion where the core wire is introduced. It is characterized in that, if the core wire of the electric wire passes between the guide projections, the core wire will not be spread and will be sandwiched between the lock spring,
Even if a part of the core wire made of a stranded wire is spread, it is held between the guide projection and the lock spring. Can be connected simply by inserting a cable.

According to a seventeenth aspect of the present invention, in the sixteenth aspect of the present invention, at least the ends of the guide projections which are close to each other are formed in a spherical shape, and the core wire made of a stranded wire is widened. Even if it tries, the core wire will be driven between the two guide projections, so that the core wire can be prevented from spreading.

According to an eighteenth aspect of the present invention, in the invention of the sixteenth aspect, the guide projection is formed at a position facing a part of an edge of the lock piece. The core wire can be pressed against the terminal plate, and a relatively large holding force on the core wire can be secured.

A nineteenth invention is characterized in that, in the sixteenth invention, the pair of guide projections are arranged so as to reduce the distance from each other toward the tip end of the core wire. The core wire introduced into the body will be guided so as to pass between the two guide projections. It can be reliably held between them.

According to a twentieth aspect of the present invention, in the sixteenth aspect of the present invention, the terminal plate has a knurled portion in which the irregularities alternately repeat in the insertion direction of the core wire at the contact portion with the core wire. As a result, foreign matter adhering to the surface of the core wire can be removed by the unevenness of the knurled portion, and the electrical connection between the terminal plate and the core wire is improved.
Further, since the guide projection is provided to regulate the portion through which the core wire passes, the knurled portion may be formed within the regulated range, and the area of the knurled portion can be reduced.

According to a twenty-first aspect of the present invention, in the first or sixteenth aspect, a guard piece protrudes along a side edge of the lock piece on a surface of the terminal plate where the core wire comes into contact. By providing the guard piece, it is possible to prevent the core wire from being inserted into an unnecessary part. In addition, since a portion through which the core wire passes is regulated by the guard piece, even if the core wire is a stranded wire, the spread of the core wire can be regulated and the core wire can be held between the lock spring and the terminal plate. In other words, even with an electric wire having a stranded wire as a core wire, the connection operation can be performed only by inserting the electric wire into the electric wire insertion hole provided in the container.

According to a twenty-second aspect of the present invention, in the first aspect of the present invention, the lock piece is spring-biased toward a main piece of the terminal plate, and the release button is mounted in the body. Pushing pieces respectively abutting on the lock pieces of the two lock springs opposed to the two main pieces arranged side by side in the container are respectively provided on both side surfaces, and the pressing pieces between the adjacent main pieces and the lock springs are provided. It is characterized by being interposed between and extending from the vicinity of the wire insertion hole in the insertion direction of the core wire to at least the contact position between the pressing piece and the core wire, even if a part of the core wire made of a stranded wire is widened Since the core wire is guided along the main piece of the terminal plate by the release button at least up to the contact position between the pressing piece and the core wire, the core wire can be prevented from being inserted into an unnecessary portion, and the spread of the core wire can be prevented. Suppressed, with the main piece of the terminal board And it can hold the core wire between the spring,
A relatively large holding force with respect to the core wire can be secured, and even for an electric wire having a stranded wire as the core wire, the connection operation can be performed only by inserting the electric wire into the electric wire insertion hole provided in the body.

According to a twenty-third aspect of the present invention, in the twenty-second aspect of the present invention, the release button is formed in a symmetrical shape when a direction orthogonal to a surface of the terminal plate contacting the core wire is defined as a left-right direction. This eliminates the need to check the left and right sides of the release button with respect to the left and right directions at the time of assembling, thereby improving assemblability.

According to a twenty-fourth aspect of the present invention, in the twenty-second aspect of the present invention, the release button is formed with a groove that intersects a straight line connecting the adjacent main pieces at a tip end surface in the insertion direction of the core wire. In insulating the adjacent main pieces, it is possible to secure a creepage distance longer than the linear distance between the main pieces, and it is possible to reduce the width of the vessel in the direction in which the straight lines extend, The body can be reduced in size.

According to a twenty-fifth aspect of the present invention, in the twenty-second aspect of the present invention, the pressing piece is formed in a curved shape such that a surface near a contact portion with the locking piece linearly contacts the locking piece. The release button is smoothly moved.

According to a twenty-sixth aspect of the present invention, in the twenty-second aspect of the present invention, the release button is formed of a synthetic resin molded product, and a parting line portion is formed on a part of the pressing piece other than the surface facing the lock piece. It is characterized in that it is provided, and it becomes easy to form a surface near the contact portion with the lock piece into a curved surface that linearly contacts the lock piece.

According to a twenty-seventh aspect of the present invention, in the first aspect of the present invention, a rib is formed around the electric wire insertion hole except at least a part of the periphery of the operation hole. Since the tool does not hinder the insertion of the tool into the operation hole, the operability of the release button does not decrease, and since the electric wires are supported by the ribs, the connection stability of the core wire can be improved.

According to a twenty-eighth aspect of the present invention, in the first aspect of the present invention, a protrusion protruding toward the terminal plate is provided on an inner side surface of the body facing the side surface of the terminal plate along the core wire insertion direction. The feature is that the gap between the inner surface of the container and the terminal plate is smaller than in the past, and even when connecting a core wire with a small wire diameter like a stranded wire, there is no possibility that the core wire enters the gap. No problems such as short circuit and insulation failure occur.

According to a twenty-ninth aspect of the present invention, in the twenty-eighth aspect of the present invention, the body is formed by assembling a body and a cover, and a recess is provided between an abutting surface of the body and the cover and the projection. By retaining water droplets and the like that have entered from the outside in the recesses, it is possible to suppress the entry of water droplets and the like into the space that houses the terminal plate.

According to a thirtieth aspect of the present invention, in the twenty-eighth aspect of the present invention, one or a plurality of irregularities are provided on an inner surface of the container located between the first and second terminal portions. In addition, the creepage distance between the first and second terminal portions is increased to improve insulation.

According to a thirty-first aspect of the present invention, in the thirty-third aspect, a fitting piece for fitting into the unevenness on the inner surface of the casing is provided on the first and second terminal plates. Can be prevented from rotating.

According to a thirty-second aspect of the present invention, in the first aspect of the present invention, the opening / closing mechanism is formed of a conductive material in a flat plate shape, has a movable contact on one surface, and is provided with the first terminal part. An opening / closing body that rotates while being in contact with the terminal plate; one end of which is held by the operation unit and the other end of which is held by the opening / closing body and is turned over by the opening / closing body in response to a rotation operation of the operation unit; A coil spring for applying a rotating force, a projecting piece inserted into the other end of the coil spring is provided at a portion of the opening / closing body facing the coil spring, and the coil is provided on both sides of the projecting piece. It is characterized by forming a flat surface that makes surface contact with the other end of the spring. Increase Closing body can be always stabilized the position of the coil spring against the closing member even when rotated. Therefore, the reversing rotation power of the coil spring is reliably applied to the opening / closing body, and the opening / closing operation of the contact portion can be performed stably.

A thirty-third aspect of the present invention is based on the thirty-second aspect of the present invention, wherein the side of the opening / closing body other than the side in contact with the first terminal plate, and other than the contact portion with the first terminal plate. A projecting piece projecting sideways is provided integrally with the opening and closing body, and when the movable contact rotates in a direction in which the movable contact is separated from the fixed contact, the projecting piece comes into contact with the projecting piece and A regulating rib for regulating the rotation range of the opening and closing body is provided on the body, and the projecting piece abuts on the regulation rib to stop the rotation of the opening and closing body and regulate the rotation range. Since the overhanging piece is provided on the side of the opening / closing body other than the side in contact with the first terminal board and is provided on a part other than the contacting part with the first terminal board, the rotation of the opening / closing body is provided. As compared with the case where an overhanging piece is provided near the contact portion with the first terminal plate serving as the moving shaft, Of the contact between the opening and closing body and the first terminal plate can be prevented, and the turning movement of the opening and closing body can be stabilized to stabilize the opening and closing operation of the contact part. Can be done.

According to a thirty-fourth aspect of the present invention, in the first aspect of the present invention, there is provided the operating portion swinging between two operating positions, and an opening / closing body to which the movable contact is fixed. An opening / closing mechanism for rotating the opening / closing body in conjunction with the first terminal, wherein the first terminal is connected to an external electric wire and has two first means for contacting and conducting with the opening / closing body.
The second terminal portion is connected to an external electric wire and has fixed contacts fixed thereto.
Characterized by connecting two second terminal plates,
If the second terminal portion is housed in the body as it is, it becomes a single-pole switch, and the pair of first and second terminal plates cut at the connecting portion and divided into two are housed in the body, respectively. If a part of the opening and closing mechanism including the opening and closing body is added, it becomes a two-pole switch. Therefore, some parts including the body can be shared between the single-pole switch and the two-pole switch, and the cost can be reduced.

According to a thirty-fifth aspect of the present invention, in the first aspect of the present invention, the operating portion swinging between two operating positions includes:
An opening / closing mechanism to which the movable contact is fixed, the opening / closing mechanism being configured to rotate the opening / closing body in conjunction with the operation of the operation unit, wherein the first terminal is connected to an external electric wire. And two first terminal plates having means for making contact and conduction with the opening / closing body are connected, and the second terminal portion is
It is characterized by connecting two second terminal plates connected to an external electric wire and fixed to each other so that two fixed contacts face each other. A three-way switch when housed in a body, a pair of first and second terminal plates cut at a connecting portion and divided into two parts, respectively housed in a body, and parts of an opening / closing mechanism including an opening / closing body Is a four-way switch. Therefore, several parts including the body can be shared for the three-way switch and the four-way switch, and the cost can be reduced.

The invention of claim 36 is the invention of claim 34 or 35.
In the present invention, storage portions for storing the first and second terminal portions are respectively provided at both ends of the body, and one or a plurality of irregularities are formed on a substantially central inner wall surface of the body. By increasing the creepage distance between the first terminal portion and the second terminal portion, the insulation can be improved.

A thirty-seventh aspect of the present invention is characterized in that, in the thirty-sixth aspect, a fitting piece fitted to the unevenness of the inner wall surface of the casing is provided on the first and second terminal plates. In addition, the rotation of the second terminal plate can be prevented.

The invention of claim 38 is the invention of claim 34 or 35.
The method for manufacturing a switch according to claim 1, wherein the first and second switches are provided.
Storing the terminal portion in the container as it is, and cutting the connecting portion into the first and second divided portions in advance.
And a step of storing each of the terminal plates in the container body, characterized in that a single-pole switch and a two-pole switch, and a three-way switch and a four-way switch are determined only by the presence or absence of a cutting operation of a connection portion. Different types of switches can be easily manufactured.

[0046]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) The switch of this embodiment is a so-called tumbler switch, and is a single-pole switch used for single-pole single-throw (a so-called one-way switch having a B-contact configuration).
As shown in FIGS. 1 to 3, a substantially box-shaped synthetic resin body 1 having an open front surface, and a synthetic body having a substantially rectangular front surface and attached to the front surface of the body 1. A container body 10 including a resin cover 2 is provided. A pair of locking projections 3 are provided on both longitudinal sides of the body 1.
And a tongue piece 5 from which a locking projection 4 and a locking hole 4 for locking and releasable locking are respectively formed from the rear end edge of the cover 2. Stop projection 3 and locking hole 4
The body 1 and the cover 2 are assembled by locking the protrusions and recesses.

The interior of the body 1 is partitioned into a plurality of sections by partitions, and terminal storage chambers 9, 9 for storing first and second terminal portions 6 ₁ , 6 ₂ described later are provided at both ends in the longitudinal direction. A contact storage chamber 7 for storing a contact portion 8 of a single-cut type (B contact type), which will be described later, is provided substantially at the center. On the inner surface of the body 1, a plurality of holding ribs 1a and a plurality of holding grooves 1b for positioning the terminal portions 6 ₁ and 6 _{2 and the} contact portion 8 are formed.

As shown in FIGS. 1 and 11, the first and second terminal portions 6 ₁ and 6 ₂ are respectively provided with first and second terminal plates 11 and 12 formed of a conductive metal plate. Terminal board 11,1
Two lock springs 15 provided for each of the two terminal boards 11, 1
And a release button 17 of a synthetic resin molded product which comes into contact with two lock springs 15 provided for every two. Each terminal plate 11, 12
Contact pieces (main pieces) 1 whose both sides are inserted and held in holding grooves 1b provided on both inner side surfaces in the short width direction of the body 1 in the terminal storage chamber 9.
3c, 14c, contact pieces 13b, 14b opposed to the contact pieces 13c, 14c, and contact pieces 13c, 14c and the contact piece 1
Connecting pieces 13a, 1 extending along the opening surface of the body 1 so as to continuously and integrally connect the front edges with the front ends 3b, 14b.
U-shaped portions 13, 1 formed integrally with each other in a substantially U-shape.
Four. The contact pieces 13b and 14b abut the holding ribs 1a formed on both inner side surfaces in the short width direction of the body 1 in the contact storage chamber 7 of the body 1, and the holding ribs 1a and the holding grooves 1b are provided.
The terminal plates 11 and 12 are held by the body 1 between the terminals 1 and 2.
The lock spring 15 is provided in the U-shaped portions 13 and 14, specifically, the contact piece 1.
It is housed between 3c, 14c and contact pieces 13b, 14b. On the first terminal plate 11, a contact holding piece 20 extending from the connecting piece 13a and having a fixed contact 21 at a tip portion is extended obliquely rearward (downward in FIG. 2) toward the contact storage chamber 7. A support piece 23 extends from the rear end edge of the contact piece 14 b toward the contact storage chamber 7 along the inner bottom surface of the body 1 on the second terminal plate 12. Is formed such that a fulcrum recess 22 having a V-shaped cross section opened to the front is orthogonal to the extension direction of the support piece 23. In the bottom surface of the body 1, two wire insertion holes 16 communicating with the respective terminal storage chambers 9 are provided.
They are pierced one by one.

The lock spring 15 is formed by connecting one end of a band-shaped leaf spring to S.
The pressing piece 15c is formed by bending into a letter shape, the other end is bent into a J-shape to form a locking piece 15b, and the center piece 15a connects between the pressing piece 15c and the locking piece 15b. It is formed in a shape that is continuously and integrally connected. Further, the pressing piece 15c and the lock piece 1
5b projects on the same side in the thickness direction with respect to the center piece 15a. When the lock spring 15 is mounted in the U-shaped portions 13, 14 of the first and second terminal plates 11, 12, ie, between the contact pieces 13c, 14c and the contact pieces 13b, 14b, the central piece 15a is used. The pressing piece 15c and the locking piece 15b are opposed to the contact pieces 13c and 14c in such a manner as to make contact with the contact pieces 13b and 14b. Here, the distal end portions of the pressing piece 15c and the lock piece 15b are inclined so as to move away from the central piece 15a toward the distal end side, and extend so as to be substantially parallel to each other.
The distal ends of the pressing piece 15c and the locking piece 15b are arranged such that the distance from the connecting pieces 13a and 14a decreases toward the distal end.

The above-described electric wire insertion hole 16 is
When the electric wire 100 is inserted into the body 10 through the electric wire insertion hole 16, the insulating coating of the electric wire 100 is formed at a portion corresponding to between the contact pieces 13 c and 14 c of the third and the 14 th and the pressing piece 15 c and the locking piece 15 b. The core wire 101 that has been removed and exposed has contact pieces 13c and 14c, a pressing piece 15c, and a lock piece 15b.
Between the contact pieces 13c and 14c.
And the first and second terminal portions 6 ₁ and 6 ₂ and the core wire 101.
Are electrically connected to each other, and the leading edge of the lock piece 15b bites into the core wire 101, so that the electric wire 100 is mechanically held so as not to come off from the body 10. In particular, the locking piece 15 b is
The locking piece 15b is hardly bent by the force in the direction in which the wire 100 is pulled out, so that the wire 100 is reliably prevented from being pulled out. Will be.

An operation hole 18 is provided in the bottom of the body 1 at a position corresponding to the release button 17. The release button 17 is disposed between the two lock springs 15 provided on each of the terminal portions 6 ₁ and 6 _2, and the two push pieces 17 a abut on the rear surfaces of the lock pieces 15 b of the both lock springs 15. Has a shape protruding from the side surface. The operation hole 18 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 18 and the release button 17 is pressed forward, the lock piece 15b is formed.
Receives the pressing force from the pressing piece 17a, so that the contact piece 1
It is designed to bend away from 3c and 14c. Therefore, the electric wire 1 to the terminal portions 6 _1, 6 ₂ in the above-mentioned
When the release button 17 is pressed by inserting a tool into the operation hole 18 with the 00 connected, the lock piece 15b bends away from the core wire 101 to release the mechanical holding of the electric wire 100,
The electric wire 100 can be pulled out from the body 10.
Here, the release button 17 is provided with two pressing pieces 17a, which simultaneously press the lock pieces 15b of the two lock springs 15 provided on the terminal portions 6 ₁ and 6 ₂ respectively. ₁ , 6 ₂
When the two electric wires 100 are connected to each other, if one release button 17 is pressed, the mechanical holding of the two electric wires 100 can be simultaneously released.

The contact portion 8 is composed of a fixed contact 21 provided on the contact holding piece 20 and a movable contact plate 19 provided with a movable contact 24. As shown in FIG. 20, the movable contact plate 19 has a central piece 19 a formed in a strip shape from a strip made of a conductive material such as brass. A movable contact 24 that comes into contact with the movable contact 24 is fixed. At the upper end of the central piece 19a, a projecting piece 19b is press-fitted into the other end of the coil spring 32 whose one end is held by the reversing handle 30. Projecting pieces 19c, 19c projecting sideways from both sides of the movable contact 24 are provided. At the approximate center of both sides in the short width direction of the body 1, ribs 33, 33 protruding inward are provided.
With the first and second terminal plates 11 and 12 stored in the terminal storage chambers 9 on both sides in the longitudinal direction of the body 1, the movable contact plate 19
Is stored in the contact storage chamber 7, the lower end edge of the movable contact plate 19 is inserted into the fulcrum recess 22 of the second terminal plate 12, and the movable contact plate 19 is arranged to be swingable about the fulcrum recess 22. . At this time, ribs 33, 33 are provided on both sides of the movable contact plate 19.
Are arranged, and the movement of the movable contact plate 19 in the short width direction of the body 1 is regulated by the ribs 33, 33.

On the other hand, the cover 2 has a substantially rectangular opening 2
5 are formed, and bearing stands 26 projecting forward are protruded from an opening edge substantially at the center in the longitudinal direction of the opening 25, and grooves 27 are formed on mutually facing surfaces of the bearing stands 26. Stepped portions 2 projecting from the front surface of the cover 2 along both side edges of the cover 2 at both ends in the longitudinal direction of the cover 2.
8 are respectively protruded, and a pair of locking claws 29 are protruded from an outer surface of each step portion 28. Although not described in detail here, the locking claw 29 is provided to hold the body 10 in the mounting frame by engaging with a mounting hole provided in the mounting frame for wiring equipment, and is provided on a construction surface such as a wall surface. When constructing a part of the container body 10 in a buried form, the joining work of the container body 10 to the mounting frame fixed to the construction surface is facilitated. Also, the step 28 comes into contact with the back side of the mounting frame when the body 10 is mounted on the mounting frame. The operation handle 38 is arranged between the two step portions 28, and the operation handle 38 is formed so as not to interfere with the step portion 28 when swinging. As described above, the stepped portion 28 protrudes from the cover 2 and the locking claw 29 is provided on the stepped portion 28, so that the operation handle 38 can be positioned rearward as compared with a case where the stepped portion 28 is not provided. In the construction state, the gap formed between the cover 2 and the operation handle 38 is hardly seen from the outside.

The reversing handle 30 made of synthetic resin for opening and closing the contact portion 8 has a substantially box shape with an open back and a substantially rectangular front surface. Protrusions 31 that enter the grooves 27 of the cover 2 are provided in a protruding manner. An opening 34 is formed at one end in the longitudinal direction of the front surface of the reversing handle 30, and claws 35, 35 protruding laterally are provided on both sides of the opening 34. At the approximate center of the end, a claw 36 protruding laterally is provided. A bar-shaped projection (not shown) for receiving the coil spring 32 is provided on the back side of the front surface of the cover 2.

An operation handle 38 made of synthetic resin is detachably attached to the front side of the reversing handle 30. The operation handle 38 has a substantially box shape in which a rectangular main portion that covers the front surface of the reversing handle 30 and a side wall that protrudes rearward from the periphery of the main portion over the entire circumference are formed continuously and integrally. At approximately the center in the longitudinal direction, locking claw pieces 39 and 40 having elasticity are provided.
Is protruding. Protruding inwardly protruding claws 39a, 40a are provided at the tips of the locking claw pieces 39, 40, and the locking claw pieces 3 are provided.
9, 40 claws 39a, 40a and reversing handle 30 claws 3
5 and 36, the operation handle 38
The operation handle 38 is attached to the reversing handle 30 so that the center of the body 10 in the short width direction substantially coincides with the center of the body 10 in the short width direction.

By the way, in the switch of the present embodiment, in order to light up when the one-sided type contact portion 8 is turned off to indicate the installation position of the switch, the lighting display portion 52 having the position indicator light 53 composed of a neon lamp is provided. An opening 3 that is incorporated in the inversion handle 30 and is formed in the front surface of the inversion handle 30.
4, a position indicator light 53 is exposed. The operation handle 3 is provided at a position corresponding to the opening 34 of the operation handle 38.
8, a long hole 54 is formed. The prism 55 made of a light guide member has an elongated convex portion 56 having a rounded tip that is inserted into the hole 54 and whose tip projects from the front surface of the operation handle 38. Is fixed to the operation handle 38 with the projection 56 inserted therein. Thus, when the operation handle 38 is attached to the reversing handle 30, the incident surface 57 of the prism 55 is arranged to face the position indicating lamp 53. Also,
Since the tip of the convex portion 56 of the prism 55 protrudes from the front surface of the operation handle 38, the position of the operation handle 38 to be pushed when the contact portion 8 is turned on by the convex portion 56 can be easily determined.

On the other hand, the lighting display section 52 is formed by electrically connecting a position indicating lamp 53 and one end of a resistor R to a terminal plate (not shown) insert-molded on a circuit board 52a made of synthetic resin. A press-fit hole 52b is provided substantially at the center of the circuit board 52a.
Are formed. Then, the circuit board 52a is fixed to the bar-shaped projection by being press-fitted into the press-fitting hole 52b, into which the one end of the coil spring 32 is inserted and fixed. You. At this time, the position indicating lamp 53 and the resistor R are housed in the space around the bar-shaped projection in the reversing handle 30.

From one end in the longitudinal direction of the circuit board 52a (the side facing the terminal board 11), it is formed integrally with a terminal board insert-molded on the circuit board 52a, and can be freely connected to and separated from the upper surface of the terminal board 11. A terminal piece 52c that makes contact and conduct is projected. A contact (not shown) is provided on the lower surface of the terminal piece 52c.
Is formed. One terminal Ra of the resistor R is inserted into the rod-shaped protrusion through a vertical groove provided on the side surface of the rod-shaped protrusion, and the terminal Ra of the resistor R and the coil spring 32 are brought into contact and conductive inside the rod-shaped protrusion.

The movable contact 24 of the movable contact plate 19 is separated from the fixed contact 21 of the terminal plate 11 (that is, the contact portion 8
Is turned off), the contact formed on the lower surface of the terminal piece 52c protruding from the end of the circuit board 52a is brought into contact with the upper surface of the terminal plate 11, and the movable contact plate is turned on. Power is supplied to the position indicating lamp 53 and the resistor R via the coil spring 32 which is in contact with and conduction with the light source 19, and the position indicating lamp 53 is turned on. , Prism 55
The light is refracted inside and is emitted to the outside from the convex portion 56, and the contact portion 8
When the switch is off, the position of the switch can be displayed. On the other hand, when the operating handle 38 is operated so that the movable contact 24 of the movable contact plate 19 comes into contact with the fixed contact 21 of the terminal plate 11 (that is, the contact portion 8 is turned on), as shown in FIG. Since the terminal piece 52c of 52a is separated from the upper surface of the terminal plate 11, the position indicating lamp 53 is turned off. For example, when the switch of the present embodiment is used for instructing the lighting fixture to be turned on and off, the position indicator lamp 53 is turned on when the lighting fixture is turned off, so that the position of the switch can be easily found even in darkness. Become.

The operation of the above-described switch will be briefly described below. When the right end of the operation handle 38 is located behind (left below) the left end as shown in FIG. 2, the movable contact 24 is fixed. In this state, the coil spring 32 is in a state in which the intermediate portion expands to the left from both ends, and the movable contact 24 is pressed against the fixed contact 21 via the movable contact plate 19 by the coil spring 32. Then, a contact pressure is applied. On the other hand, when the left end of the operation handle 38 is pushed backward from this state, the front end of the coil spring 32 moves to the right, so that the coil spring 32 is rapidly expanded after being compressed, so that the middle portion is larger than both end portions. At this time, the movable contact plate 19 is tilted rightward to separate the movable contact 24 from the fixed contact 21. That is, the spring force of the coil spring 32 acts in a direction to rotate the reversing handle 30 counterclockwise, and a contact pressure for bringing the terminal strip 52c into contact with the terminal plate 11 is generated.

Here, in the conventional switch, the distance between the pressing piece 15c 'of the lock spring 15' and the center piece 15a 'is increased as the pressing piece 15c' is closer to the distal end portion than the connection portion with the center piece 15a '. It was composed. That is, FIG.
As shown in FIG. 5, the intervals A and B between the bent portion X of the pressing piece 15c 'in the direction facing the center piece 15a' and the bent portion Y in the direction away from the center piece 15a 'and the center piece 15a' are A. Because of the relationship <B, a large force is required to bend the pressing piece 15c ′, and the range of the applicable electric wire (the diameter of the connectable core wire 101) depends on the strength of the conductive material forming the lock spring 15 ′. Range) was narrow. Also,
Due to the large force required to bend the pressing piece 15c ', even when a core wire made of a stranded wire is inserted, the pressing wire 15c' does not bend and the core wire is separated, and the stranded wire cannot be connected. Was. On the other hand, in the present embodiment, the pressing piece 15c of the lock spring 15 is bent such that the interval between the pressing piece 15c and the central piece 15a is smaller on the distal end side than the connection portion with the central piece 15a. That is, as shown in FIG. 5B, the bent portion X of the pressing piece 15c in the direction facing the central piece 15a, and the distance A between the bent portion Y in the direction away from the central piece 15a and the central piece 15a, Since B is in the relationship of A> B, the dimension from the connecting portion of the pressing piece 15c to the central piece 15a to the tip can be made longer while suppressing the increase in the overall size of the lock spring 15 as compared with the related art. , Pressing piece 15
c to reduce the force required to deflect
The stress concentration on c can be dispersed. as a result,
Compared with the conventional example shown in FIG. 5 (a), the range of applicable electric wires can be expanded and stranded wires can be connected. In addition, as the size of the pressing piece 15c becomes longer, the lock piece 15
b is longer, and the lock tablet 1
5b is also easily bent.

In the conventional example, as shown in FIG. 6A, the distance between the leading edge of the locking piece 15b 'of the lock spring 15' and the leading end of the pressing piece 15c 'is large.
At the time of insertion, there was resistance when first passing over the leading edge of the locking piece 15b ', and then resistance when contacting the leading end of the pressing piece 15c' and bending the pressing piece 15c '.
For this reason, as shown in FIG. 7A, two peaks occur in the insertion force of the core wire 101, and the insertion feeling of the core wire 101 when the electric wire 100 is connected is not good. On the other hand, in the present embodiment, the pressing piece 15
c is located near the leading edge of the locking piece 15b, so that the contact piece 13 between the locking piece 15b and the terminal plates 11, 12 is provided.
6 and FIG.
As shown in (b), the distal end portion of the lock piece 15b bent away from the contact pieces 13c and 14c comes into contact with the distal end portion of the pressing piece 15c to bend the pressing piece 15c. For this reason, as shown in FIG. 7B, only one peak occurs in the insertion force of the core wire 101, and the insertion feeling of the core wire 101 at the time of connection of the electric wire 100 becomes good, so that the insertion failure of the core wire 101 can be prevented. .

When the distal end of the pressing piece 15c contacting the core wire 101 is arranged near the distal end edge of the lock piece 15b as described above, when the release button 18 is operated to flex the lock piece 15b. If the locking piece 15b and the pressing piece 15c interfere with each other, it becomes difficult to perform the releasing operation. Therefore, in the present embodiment, as shown in FIG. 8, the portion Z of the pressing piece 15c facing the locking piece 15b is curved in a direction away from the locking piece 15b. There is an advantage that the locking piece 15b can be prevented from interfering with the pressing piece 15c when the 15b is bent, and the release operation by the release button 17 becomes easy.

Further, in this embodiment, as shown in FIG. 9, the leading edge of the lock piece 15b and the contact piece 13 of the first and second terminal plates 11, 12 are inserted without inserting the core wire 101.
The lock spring 15 is formed such that a gap is formed between the lock spring 15 and the lock springs c and 14c. That is, the U-shaped portions 1 of the terminal plates 11 and 12
Contact pieces 13c, 14c and contact piece 13 in 3 and 14
The distance L2 between the center piece 15a of the lock spring 15 and the leading edge of the lock piece 15b is smaller than the distance L1 between the c and 14c (L1> L2). By providing a gap between the tip edge of the locking piece 15b and the contact pieces 13c and 14c of the terminal plates 11 and 12, there is an advantage that a core wire made of a stranded wire can be easily inserted.

Here, depending on the diameter of the core wire 101, when the core wire 101 is inserted between the locking piece 15b and the contact pieces 13c, 14c of the terminal plates 11, 12, the lock spring 15 rotates to rotate the core wire 101. There is a possibility that the holding cannot be stabilized. Therefore, in the present embodiment, as shown in FIG.
A plurality of Rs projecting in the direction of contact with 01 are provided. For this reason, according to the diameter of the core wire 101, the core wire 10
1 and the pressing piece 15c change contact positions.
5 can be prevented from rotating, and the holding of the core wire 101 can be stabilized.

In this embodiment, each terminal plate 1
1, 12 and the portion that abut on each other along the core wire insertion direction of the lock spring 15, that is, the connecting piece 1 of the U-shaped portions 13, 14.
3a, a portion near the contact pieces 13b, 14b in the 14a, and a central piece 1 in the pressing piece 15c of the lock spring 15.
The portion near 5a is formed substantially flat. For this reason,
At least when the core wire 101 is inserted, as shown in FIG. 2, the portions of the connecting pieces 13a and 14a near the contact pieces 13b and 14b and the portions of the pressing piece 15c near the central piece 15a make contact on the entire substantially flat surface. become. Therefore, when the electric wire 100 is connected to the first or second terminal portion 6 ₁ , 6 ₂ , when the core wire 101 of the electric wire 100 is inserted from the electric wire insertion hole 16, the lock spring 1 in a plane parallel to the insertion direction is inserted.
5 (counterclockwise rotation in FIG. 4) can be prevented, and the holding of the core wire 101 can be stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

By the way, if the contact pieces 13c and 14c, which are the contact portions with the core wire 101, are flat, if the core wire is a stranded wire, it will be twisted when introduced between the terminal plates 11 and 12 and the lock spring 15. Since each wire constituting the wire spreads apart, the distance between the lock spring 15 and the terminal plates 11 and 12 is reduced, and the contact pressure by the lock spring 15 is reduced. Therefore, in the present embodiment, as shown in FIGS. 11 to 13, in the contact pieces 13 c and 14 c of the terminal plates 11 and 12, near the tip of the lock piece 15 b of the lock spring 15,
A pair of guide projections 13d and 14d are provided on both sides of a portion where b is a contactable portion and a portion where the core wire 101 of the electric wire 100 introduced into the body 10 through the electric wire insertion hole 16 contacts. The two guide projections 13d, 14d are contact pieces 13c, 14
c so as to be arranged in the width direction of the guide projections 13d, 1d.
In 4d, the ends near each other are formed into a part of a spherical surface (so-called SR shape). Therefore, when the electric wire 100 whose core wire is a stranded wire is introduced from the electric wire insertion hole 16, even if the core wire spreads apart, the guide projection 13
d and 14d so that the core wire is securely clamped between the lock piece 15b and the guide projections 13d and 14d, and the guide projections 13d and 14d are SR-shaped so that the core wire can be guided by both guides as much as possible. It will be guided so as to pass between the protrusions 13d and 14d. In short, even if the core wire is a stranded wire, the possibility of spreading apart can be reduced. Further, since the positions of the guide projections 13d and 14d are near the distal end of the lock piece 15b, even when the core wire rides on the guide projections 13d and 14d, the lock piece 15d is formed.
From b, a relatively large contact pressure can be applied to the core wire, and electrical connection of the core wire can be reliably ensured. In order to further stabilize the contact state between the first and second terminal plates 11 and 12 and the core wire, as shown in FIG. It is desirable to form knurled portions 13e and 14e in which irregularities are alternately repeated in the direction of introduction (the vertical direction in FIG. 14). Such knurls 13e, 14
If e is formed, the friction with the core wire is increased, and even a thin stranded wire can be connected, and dirt attached to the surface of the core wire can be removed to some extent by the unevenness of the knurls 13e and 14e. Since the core wire passes mainly between the two guide projections 13d and 14d as described above, the knurls 13e and 14e are connected between the two guide projections 13d and 14d as shown in FIG. And the knurls 13e and 14e may be provided only on a part of the terminal plates 11 and 12.

The two guide projections 13d and 14d described above may be arranged perpendicular to the insertion direction of the core wire (vertical direction in FIG. 14) as shown in FIG. 14 (a), but FIG. 14 (b)
As shown in (c), the core wires may be arranged so that the distance between them decreases toward the distal end side (upper side in FIG. 14). If the guide projections 13d and 14d are arranged in this manner, the body 10
Even if the core wires introduced into the guide projections are to be separated, the two guide projections 13d and 14d pass between the two guide projections 13d and 14d.
d and 14d, the stranded wire does not fall apart even if the core wire has a stranded wire as a core wire.
The core wire can be securely held between the first and second terminal plates 11 and 12 and the lock spring 15.

In the above configuration example, the guide projections 13d, 14d
However, as shown in FIGS. 15 and 16, one side edge of the contact pieces 13c and 14c
Guard pieces 13f and 14f along the side edge of b may be protruded. The guard pieces 13f and 14f are connected to the terminal plates 11 and 12 respectively.
Are formed along one side edge of each of the two lock springs 15 and are provided at portions between the two lock springs 15. By providing such guard pieces 13f and 14f, the displacement of the lock spring 15 is suppressed, and even if the core wire of the electric wire is a stranded wire, the guard piece 1 is provided.
The range in which the core wire is inserted is regulated by 3f and 14f. The other side edges of the contact pieces 13c and 14c are inserted into holding grooves 1b provided on the inner surface of the body 1,
The guard pieces 13f and 14f face the inner surface of the body 1. In other words, the guard pieces 13f,
It is possible to regulate the position of the core wire without providing 14f. However, guide protrusions 13d, 14d
May be provided without the guard pieces 13f and 14f alone.

In this embodiment, as shown in FIGS. 17 to 19, the front portions of the adjacent contact pieces 13c and 14c in each of the terminal plates 11 and 12 are formed in a shape in which the front portions are separated from each other, and each release plate is released. The contact pieces 13c and 14 where the button 17 is adjacent
The contact pieces 13c and 14c are formed in such a shape that they are interposed between the contact pieces c and the front end face is located near the front end edges of the contact pieces 13c and 14c in the insertion direction of the electric wire (upward direction in FIG. 17). in short,
As shown in FIG. 17, the longitudinal dimension of the release button 17 in the plane including the adjacent contact pieces 13c and 14c is shown in FIGS.
It is set larger than the conventional release button 17 'shown in FIG. More specifically, the release button 17 extends from the vicinity of the wire insertion hole 16 to a position forward of the contact position between the pressing piece 15c of the lock spring 15 and the core wire of the wire in the wire insertion direction.

Accordingly, when a wire whose core is a stranded wire is introduced from the wire insertion hole 16, even if a part of the core is widened, the release button 17 is used to release the core at least to the contact position between the pressing piece 15c and the core. Since the guides are guided along the contact pieces 13c and 14c of the terminal plates 11 and 12, the insertion of the core wire into an unnecessary portion can be prevented, and the spread of the core wire is suppressed. As a result, the contact pieces 1 of the terminal plates 11, 12
3c, 14c and the core wire can be held between the lock spring 15 and
A relatively large holding force with respect to the core wire can be ensured, and even with an electric wire having a stranded wire as the core wire, the connection operation can be performed only by inserting the wire into the wire insertion hole 16 provided in the body 10. The release button 17 only needs to be extended from the vicinity of the wire insertion hole 16 to at least the contact position between the pressing piece 15c and the core wire.

The release button 17 has a surface near the contact portion of the push piece 17a with the lock piece 15b.
The release button 17 is smoothly moved when the tool is inserted into the operation hole 15 and the release button 17 is pressed forward because the tool is formed into a curved surface that linearly contacts the release button 17. Release button 1
7 is made of a synthetic resin molded product as described above, and a parting line portion PL corresponding to the position of the parting line of the mold at the time of injection molding is provided on the side surface of the pressing piece 17a. Since the portion 17a is provided at a portion other than the surface facing the lock piece 15b, the surface near the contact portion with the lock piece 15b can be easily formed into a curved surface that linearly contacts the lock piece 15b. become.

Here, in the present embodiment, the shape of the release button 17 is viewed as the right and left direction with the direction orthogonal to the surfaces of the terminal plates 11 and 12 with which the core wires come into contact (that is, the thickness direction of the contact pieces 13c and 14c). In this case, it is not necessary to check the left and right of the release button 17 in the left-right direction at the time of assembling, so that the assemblability is improved. The release button 17 is formed in a symmetrical shape even when the width direction of the body 1 is viewed as the left-right direction.

A groove 17b is formed on the front end face (the end face in the direction of insertion of the electric wire) of the release button 17 and is parallel to the pushing piece 17a projecting from both sides. That is, the release button 17
Is formed with a groove 17b which intersects a straight line connecting the adjacent contact pieces 13c and 14c (or between the contact pieces 13c and 14c) on the front end face.
A creepage distance longer than the linear distance between the contact pieces 13c and 14c can be ensured between the contact pieces 3c and 14c, and the width of the body 10 in the direction in which the straight line extends can be reduced, and the body 10 Can be reduced in size. Furthermore, release button 1
Since the cylindrical hole 17c is provided at the center of the bottom surface of the groove 17b, the creepage distance is further increased.

By the way, as shown in FIGS. 20A and 20B, the projecting piece 19b of the central piece 19a of the movable contact plate 19 is formed.
Flat surfaces 19d, 19d, which are in surface contact with the tip end surface of the coil spring 32, are formed on the left and right sides of the coil spring 32, respectively. That is, in the conventional switch, in order to make the movement of the movable contact plate smooth, chamfering is performed on both sides of the protruding piece 19b, and the coil spring is seated on the chamfered portion. The contact area between the coil spring and the movable contact plate decreases, and the coil spring warps to the opposite side in response to the reversing operation of the operation handle. The position is not stable, and the spring force of the coil spring applied to the movable contact plate changes, so that the contact pressure of the contact portion may fluctuate. On the other hand, in the present embodiment, since the coil spring 32 comes into surface contact with the flat surfaces 19d provided on the movable contact plate 19, the movable contact plate 1 like the conventional switch is used.
The contact area between the coil spring 32 and the movable contact plate 19 can be made larger than in the case where the coil spring 32 comes into contact with the chamfered portion provided at 9, and the position of the coil spring 32 with respect to the movable contact plate 19 can be stabilized. One end of the coil spring 32 is connected to the projecting piece 19 of the movable contact plate 19.
By being press-fitted into b, it is fixed to the movable contact plate 19, so that the positional relationship between the coil spring 32 and the movable contact plate 19 is further stabilized. In addition, since the shape of both corners 19e at the tip of the protruding piece 19b is processed into a curved shape,
When the coil spring 32 is press-fitted into the protruding piece 19b, one end of the coil spring 32 can be easily guided, and the work of mounting the coil spring 32 can be easily performed.

In the conventional switch, the movable contact 24
When the movable contact plate 19 is reversed in the direction in which the movable contact plate 19 contacts the fixed contact 21, the movable contact plate 1
9, the movable contact plate 19 is inverted in a direction in which the movable contact 24 is separated from the fixed contact 21. The rotation range of the movable contact plate 19 is regulated by locking a concave portion (not shown) formed on the inner surface of the body 1. Formed at the lower end portion, the shavings generated by the friction between the protrusion 37 and the inner surface of the body 1 are removed from the fulcrum recess 2.
2 may adversely affect the opening / closing operation of the contact portion 8. On the other hand, in the present embodiment, the movable contact 24
When the movable contact plate 19 swings in a direction away from the fixed contact 21, the regulating ribs 41, 41 that abut against the projecting pieces 19 c, 19 c of the movable contact plate 19 to prevent the movable contact plate 19 from rotating, respectively. It is provided on the inner surface of the body 1.
Here, the overhanging piece 1 that regulates the rotation range of the movable contact plate 19
Reference numeral 9c denotes a side of the movable contact plate 19 other than the side in contact with the second terminal plate 12, and is provided at a portion other than the contact portion (lower end) with the second terminal plate 12, so that the Compared with the case where the rotation is stopped by the protrusion 37 provided at the lower end of the movable contact plate 19 like the switch of the example, it is possible to prevent shavings and the like generated due to friction from accumulating in the fulcrum recess 22, The rotation operation of the contact 19 can be stabilized, and the inversion operation of the contact portion 8 can be performed stably.

Further, since the overhanging piece 19c is provided at the portion of the movable contact plate 19 located on both sides of the movable contact 24, the width of the movable contact plate 19 is increased by the length of the overhanging piece 19c. The strength of the movable contact plate 19 increases. Therefore, even if a stress is applied to the movable contact plate 19 when the movable contact 24 is crimped or a hole is formed in the movable contact plate 19, the movable contact plate 19 is not deformed. In addition, a fillet portion 19f is formed integrally with the base of the overhanging piece 19c so that the dimension in the direction along the left and right sides of the movable contact plate 19 increases as approaching the connection portion with the central piece 19a. Therefore, the strength of the connecting portion between the overhanging piece 19c and the center piece 19a can be increased, and even when the movable contact plate 19 is formed of brass, stress corrosion cracking of the movable contact plate 19 can be prevented.

As a material of the movable contact plate 19, a material having good conductivity, for example, brass is used. However, a metal plating layer may be formed on the surface of the movable contact plate 19, Of the movable contact plate 19 in a corrosive environment, the stress corrosion cracking of the movable contact plate 19 can be prevented.

In order to realize the contact portion 8 suitable for opening and closing a minute load, it is conceivable to improve the conductivity by applying silver plating to the surface of the second terminal plate 12 or the movable contact plate 19. However, if the second terminal plate 12 is to be plated with silver, it is necessary to apply hoop plating to the clad material (for example, a silver alloy such as AgCdO), which increases the cost. Therefore, as shown in FIG. 21, a silver plating layer 19g may be formed on the entire surface of only the movable contact plate 19, and by forming a thin film of pure silver on the surface, stress corrosion cracking of the movable contact plate 19 can be achieved. , And the resistance of the movable contact plate 19 is reduced to realize the contact portion 8 suitable for opening and closing a minute load.

In the configuration of the contact portion 8 described above, the projecting pieces 19c projecting sideways are provided at portions near the movable contact 24 on the left and right side edges of the movable contact plate 19, but FIG.
As shown in FIG. 2, the projecting pieces 19 c may be provided at portions of the left and right side edges of the movable contact plate 19 between the movable contact 24 and the lower end and above the lower end. good. In this case, the restricting rib 41 that comes into contact with the overhanging piece 19c and restricts the rotation range of the movable contact plate 19 may be provided at a position near the bottom surface side of the body 1. Further, the above-mentioned movable contact plate 19 is formed in a state where a plurality of movable contact plates 19 are connected via protrusions 37, and is separated into individual movable contact plates 19 by cutting the protrusions 37. In the movable contact plate 19 having the structure shown in FIG. 22, a plurality of movable contact plates 19 are formed in a state of being connected via the overhanging piece 19c at the time of manufacturing, and the intermediate portion of the overhanging piece 19c is cut. Thus, since the movable contact plates 19 are separated from each other, and a connecting portion connecting the movable contact plates 19 is used as the overhanging piece 19c, there is an advantage that it is not necessary to separately form the overhanging piece 19c. is there.

(Embodiment 2) The present embodiment is characterized in that a fitting groove 15d for fitting with a projection 70 protruding from the body 1 constituting the body 10 is provided in the lock spring 15. Other configurations are common to the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 23, the central piece 1 of the lock spring 15
A narrow fitting groove 15d is provided substantially at the center in the width direction of the lock spring 15 from 5a to the lock piece 15b. Then, with the lock spring 15 stored in the terminal storage chamber 9 of the body 1, the projection 70 projecting from the bottom surface of the terminal storage chamber 9 (not shown) is fitted into the fitting groove 15 d of the lock spring 15. It is.

By fitting the projection 70 into the fitting groove 15d, the core wire 101 from which the coating of the electric wire 100 has been removed is provided.
When the lock spring 15 is inserted through the wire insertion hole 16, rotation of the lock spring 15 in a plane perpendicular to the insertion direction (rotation in the direction of the arrow shown in FIG. 23) can be prevented. In addition, since the portions of the central pieces 13a and 14a near the contact pieces 13b and 14b and the portion of the pressing piece 15c near the central piece 15a abut on the entire substantially flat surface, the insertion of the core wire 101 as in the first embodiment. The rotation of the lock spring 15 in a plane parallel to the direction can also be prevented, and the holding of the core wire 101 can be further stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

(Embodiment 3) In the present embodiment, a support piece 15e for supporting the lock spring 15 in contact with the body 1
5 is characterized in that it is provided in the fifth embodiment, and other configurations are common to the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 24, the central piece 1 of the lock spring 15
A support piece 15e is formed by cutting out a substantially central portion of the lock spring 15 in the width direction from 5a to the lock piece 15b in a U-shape. The support piece 15e is flexible with one end on the side of the center piece 15a as a fulcrum. In the state where the lock spring 15 is stored in the terminal storage chamber 9 of the body 1, FIG.
As shown in FIG. 5, the support piece 15e is provided on the inclined wall 71 formed on the bottom surface (the surface where the wire insertion hole 16 is opened) of the terminal storage chamber 9.
Press-contact to support the lock spring 15.

Since the support piece 15e is pressed against the inclined wall 71 of the body 1 to support the lock spring 15, FIG.
As shown in (2), when the core wire 101 from which the coating of the electric wire 100 has been removed is inserted through the electric wire insertion hole 16, the lock spring 15 can be prevented from rotating in a plane parallel to the insertion direction. Moreover, similarly to the first embodiment, the portions of the center pieces 13a and 14a near the contact pieces 13b and 14b and the portion of the pressing piece 15c near the center piece 15a abut on the entire substantially flat surface. The rotation of the lock spring 15 in a plane parallel to the insertion direction can be more reliably prevented,
The holding of the core wire 101 can be further stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

(Embodiment 4) The present embodiment is characterized in that a locking portion 15f for locking to the body 1 is provided on the lock spring 15, and the other configuration is the same as that of the first embodiment.
Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 26, the lock piece 1 of the lock spring 15
5b is bent in a substantially rectangular shape to form a locking portion 15f. On the other hand, on the bottom surface of the terminal storage chamber 9 of the body 1, there is provided a recess 72 into which a lower portion of the lock spring 15 (a portion from a connection portion of the central piece 15a to the lock piece 15b to a locking portion 15f) is fitted. I have. Therefore, when the lock spring 15 is stored in the terminal storage chamber 9, as shown in FIG. 26, the locking portion 15 f of the lock spring 15 is provided at the corner 72 a of the recess 72 provided on the bottom surface of the terminal storage chamber 9. Lock.

Since the locking portion 15f of the lock spring 15 is locked to the corner 72a of the concave portion 72 provided on the bottom surface of the terminal storage chamber 9, as shown in FIG. When the stripped core wire 101 is inserted from the wire insertion hole 16, rotation of the lock spring 15 in a plane parallel to the insertion direction can be prevented. Moreover, similarly to the first embodiment, the portions of the center pieces 13a and 14a near the contact pieces 13b and 14b and the portion of the pressing piece 15c near the center piece 15a abut on the entire substantially flat surface. The rotation of the lock spring 15 in a plane parallel to the insertion direction can be more reliably prevented, and the holding of the core wire 101 can be further stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

As shown in FIG. 27, if a support piece 15e similar to that of the third embodiment is provided on the lock spring 15,
The rotation of the lock spring 15 in a plane parallel to the insertion direction can be more reliably prevented.

(Embodiment 5) The present embodiment is characterized in that a fitting piece 15g that fits into a groove provided in the body 1 is provided on the lock spring 15, and other configurations are the same as those of Embodiment 1.
And in common. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 28, the central piece 1 of the lock spring 15
A rectangular flat plate-like fitting piece 15g extends from one side edge of 5a. On the other hand, although not shown, the body 1
A groove into which the fitting piece 15g fits is formed along the insertion direction of the core wire 101 on the inner side surface of the terminal storage chamber 9. Therefore, when the lock spring 15 is stored in the terminal storage chamber 9,
A fitting piece 15g of the lock spring 15 fits into a groove provided on the inner side surface of the terminal storage chamber 9.

Since the fitting piece 15g of the lock spring 15 is fitted in the groove provided on the inner surface of the terminal storage chamber 9,
The core wire 101 from which the coating of the electric wire 100 has been removed is inserted into the electric wire insertion hole 1.
When the lock spring 15 is inserted from the position 6, rotation of the lock spring 15 in a plane parallel to the insertion direction and in a plane perpendicular to the insertion direction can be prevented. Moreover, as in the first embodiment, the connecting piece 1
The portions near the contact pieces 13b and 14b in the portions 3a and 14a and the portion near the central piece 15a in the pressing piece 15c abut on the substantially flat surface as a whole. 15 can be more reliably prevented, and the holding of the core wire 101 can be further stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

As shown in FIG. 29, the fitting piece 15g may extend from both side edges of the central piece 15a. With such a configuration, there is an advantage that the direction in which the lock spring 15 is stored in the terminal storage chamber 9 in the positional relationship with the groove of the terminal storage chamber 9 is eliminated, and the assembling property can be improved.

As shown in FIG. 30, a fitting piece 15g of two lock springs 15, 15 adjacent to each other in the body 1 is provided.
If 15 g are connected and formed integrally, there is an advantage that the number of parts can be reduced and the assemblability can be improved.

(Embodiment 6) In this embodiment, a lock spring 15
The second embodiment is characterized in that a holding portion for holding is provided on the first and second terminal plates 11 and 12, and other configurations are common to the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 31, projecting pieces protruding from one side end of the contact pieces 13b and 14b of the U-shaped portions 13 and 14 of the terminal plates 11 and 12 are bent into a substantially U-shape. The holding portions 13g and 14g are formed by the
The central piece 15a of the lock spring 15 is clamped by g and 14g (see FIG. 31B).

Thus, the first and second terminal plates 11, 12
The lock spring 15 is provided by the holding portions 13g and 14g provided on the
The central piece 15a is clamped, so that when the core wire 101 from which the coating of the electric wire 100 has been stripped is inserted through the electric wire insertion hole 16, the lock spring 15 in a plane parallel to the insertion direction and in a plane perpendicular to the insertion direction. Can be prevented from rotating. Further, similarly to the first embodiment, the portions of the connecting pieces 13a and 14a near the contact pieces 13b and 14b and the portion of the pressing piece 15c near the central piece 15a abut on the entire substantially flat surface. The rotation of the lock spring 15 in a plane parallel to the insertion direction can be more reliably prevented, and the holding of the core wire 101 can be further stabilized. In addition, by preventing the rotation, the tip of the lock piece 15b can be firmly cut into the core wire 101, and the core wire 101 after connection can be prevented from coming off.

[0099] Incidentally (Embodiment 7) In the embodiment 1, the electric wire 100 is pulled to the side of the body 1, for example a state in which the first core wire 101 to the terminal portion ₆₁ has connected a wire 100 made of a single wire In this case, as shown in FIG. 34, the core wire 101 deflects the locking piece 15b and the pressing piece 15c against the spring force of the lock spring 15 so that the contact piece 13 of the first terminal plate 11 is bent.
There is a possibility that a contact failure may occur due to inclination away from c. In order to avoid such a contact failure, a rib may be formed around the wire insertion hole 16 on the bottom surface of the body 1 to increase the length (depth) of the wire insertion hole 16. There is a disadvantage that the length of the operation hole 18 penetrating in the vicinity of the wire insertion hole 16 is also increased, and the insertability of the tool into the operation hole 18 is reduced.

Therefore, in this embodiment, the rib 1 is provided around the electric wire insertion hole 16 except for at least a part around the operation hole 18.
c is formed. That is, as shown in FIG. 32 and FIG. 33, a portion of the bottom surface of the body 1 except for the outside of the body 1 in the longitudinal direction around the operation hole 18 at the both ends in the longitudinal direction is provided behind the body 1 (the wire 100 is inserted into the wire insertion hole 16). Ribs 1c projecting in the direction opposite to the insertion direction.
Therefore, even if the wire 100 in the connected state is pulled to the side of the body 1, the length of the wire insertion hole 16 is increased by the rib 1c, as shown in FIG.
c supports the electric wire 100, the core wire 101 does not tilt against the spring force of the lock spring 15, and the first terminal plate 11
This can prevent a contact failure from occurring apart from the contact piece 13c. Moreover, the operation hole 18 on the bottom surface of the body 1
Since the recess 1d in which the rib 1c does not protrude is formed on the outside of the peripheral body 1 in the longitudinal direction, the recess 1d is formed.
The tool can be inserted into the operation hole 18 without being interrupted by the rib 1c, and since the rib 1c does not hinder the insertion of the tool into the operation hole 18 for removing the core wire 101, the operability of the release button 17 is improved. Does not decrease.

(Embodiment 8) By the way, in Embodiment 1, as shown in FIG. 37, the water drops in the depth direction from the opening surface of the body 1 (the abutting surface with the cover 2) to the inner surface in order to suppress the penetration of water droplets. When the step 1e is provided,
There is a possibility that the strand 102 of the core wire made of the stranded wire may advance into the contact portion 8 or the other terminal storage chamber 9 through the step portion 1e to cause a defect such as a short circuit or poor insulation.

Therefore, in the present embodiment, a projection 1f protruding toward each terminal plate 11, 12 is formed on the inner side surface of the body 1 opposite to the side surface of the first and second terminal plates 11, 12 along the core wire insertion direction. Provided. That is, on both sides of each of the terminal storage chambers 9 facing the short width direction of the body 1, there are provided protrusions 1 f formed of ridges projecting inward along the depth direction of the body 1. As shown in 36, the tip of the projection 1f on the opening side of the body 1 extends to almost the same height as the abutting surface of the opening end of the body 1 with the cover 2. Further, a stepped portion 1e which falls in the depth direction from the surface of the body 1 abutting with the cover 2 to the inner side surface is provided over substantially the entire circumference.
As shown in FIG. 5, a step 1e at a portion between the butting surface of the body 1 and the cover 2 and the projection 1f becomes a recess 1g.

Thus, the first and second terminal plates 11, 12
35 are stored in the terminal storage chambers 9, 9, at least the U-shaped portions 13, 12 of the terminal plates 11, 12 as shown in FIG.
14, the connecting pieces 13a, 14a and the contact pieces 13
The distal end surfaces of the protrusions 1f substantially abut against the side end surfaces of c and 14c. Therefore, the inner surface of the body 1 and the terminal plates 11,
12 is small, and even when a core wire made of a stranded wire is connected, it is possible to prevent the thin wire 102 having a small wire diameter from entering the gap, thereby preventing problems such as short circuit and insulation failure from occurring. it can. In addition, since the concave portion 1g is provided between the butting surface of the body 1 and the cover 2 and the protruding portion 1f, water droplets and the like that have entered from the outside into the gap between the butting portion of the body 1 and the cover 2 stay in the concave portion 1g, Terminal board 1
Intrusion of water droplets and the like into the terminal storage chamber 9 for storing the terminals 1 and 12 can be suppressed.

(Embodiment 9) The switch of the present embodiment is a so-called tumbler switch, and is a three-way switch (a switch having a so-called C-contact configuration in which the contact portion 8 is used for single-pole switching). FIG. 38 is an exploded perspective view, FIG. 39 (a) is a front view, FIG. 39 (b) is a side view, and FIG.
FIG. 9 (c) is a cross-sectional view of FIG. The same components as those of the switch according to the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The contact portion 8 has a so-called C-contact configuration, and has movable contacts 24a, 24a on both surfaces of a central piece 19a of the movable contact plate 19.
b is fixed. These two movable contacts 24a, 2
4b is for each alternative contact-separable and the fixed contacts 59 and 61 provided in the pair of first terminal plate 56, 60 in which the first terminal portion 6 ₃ comprises.

The first terminal plates 58 and 60 have a substantially U-shaped portion formed by bending a plate material made of a conductive material, similarly to the second terminal plate 12. The lock springs 15 are respectively housed in the U-shaped portions. The U-shaped portions of the first terminal plates 58 and 60 include connecting pieces 58a and 60a,
From both end edges of the connecting pieces 58a, 60a, the connecting pieces 58a, 60
a contact pieces 58b projecting in a direction substantially orthogonal to
60b and the contact pieces 58c, 60c. Here, from the connecting piece 58a of the one second terminal plate 58, a substantially L-shaped contact holding provided at its tip with a fixed contact 59 which comes into contact with one movable contact 24a of the movable contact plate 19 so as to be able to freely come and go. A piece 58c extends. Furthermore, a substantially L-shaped contact holding piece provided with a fixed contact 61 provided at the tip from the connecting piece 60a of the other second terminal plate 60 so as to freely contact and separate from the other movable contact 24b of the movable contact plate 19. 60d is extended. Then, the connecting pieces 58 of the first terminal plates 58, 60
Contact members 63 and 64 having elasticity are attached to the respective upper surface portions of a and 60a.

The contacts 63 and 64 are in a mirror image relationship with each other, and are plate-shaped main pieces 63a and 64a that are in contact with the connecting pieces 58a and 60a of the first terminal plates 58 and 60, and a main piece 63.
a, 64a extending substantially from one end of each of the contact portions (not shown) of the circuit board 52d and making contact with the contact portions (not shown).
b, 64b and contact pieces 63 in the main pieces 63a, 64a
A pair of side pieces 63c, 63d, 64c, 64d bent at both end edges adjacent to b, 64b are integrally formed of a conductive plate material. One side piece 63
Locking pieces for locking to the connecting pieces 58a, 60a of the first terminal plates 58, 60 are bent inward from the leading edges of the first and second terminal boards 58, 60, and the other side pieces 63d, 64d are directed inward. A protruding locking claw is cut and raised.

Thus, the side pieces 63c, 63c of the contacts 63, 64
64c is locked to the end of the connecting pieces 58a, 60a of the first terminal plates 58, 60, and then the other side piece 63 is locked.
When the d and 64d are pressed toward the connecting pieces 58a and 60a, the locking claws provided on the side pieces 63d and 64d abut against the edges of the connecting pieces 58a and 60a and are bent. When the leading end of the connector gets over the edges of the connecting pieces 58a and 60a, the locking claws are locked to the ends of the connecting pieces 58a and 60a, and the contacts 63 and 64 are attached to the first terminal plates 58 and 60. And it is locked and fixed.

Here, a plurality of pressing ribs (not shown) are provided on the inner peripheral surface of the cover 2 so as to protrude.
When the container 10 is constructed by assembling the circuit board 52d, the pressing ribs come into contact with the peripheral portion of the circuit board 52d and
To the body 1 side. As a result, the contact portions of the circuit board 52d and the contact pieces 63b, 64b of the contacts 63, 64 elastically contact each other, and the first terminal plate 58,
60 and the circuit board 52d are electrically connected to each other.
, And the position indicating lamp 53 is turned on.

In the switch of this embodiment, the movable contact 24a and the fixed contact 59 and the movable contact 24b and the fixed contact 61 are selectively contacted each time the operation handle 38 is operated.
When the load is not energized, the position indicating lamp 53 is turned on when the load is not energized, and when the load is energized, the position indicating lamp 53 is turned off.

By the way, the movable contact plate 19 in the present embodiment has the same configuration as the movable contact plate 19 in the first embodiment except that the projection 37 is not provided as shown in FIG. Flat surface 19 in central piece 19a
The portion where d is formed is formed substantially flush with the other portions of the central piece 19a, but as shown in FIGS. 42 (a) and 42 (b), the left and right sides of the projecting piece 19b in the central piece 19a are A configuration in which the central piece 19a formed with the flat surface 19d is cut and raised by the shearing cutting so as to project in directions opposite to each other in a direction substantially orthogonal to the plane direction of the central piece 19a may be adopted. Thus, one end of the coil spring 32 is press-fitted into the projecting piece 19b of the movable contact plate 19, and the flat surfaces 19d, 19d provided on both sides of the projecting piece 19b.
The surface of the coil spring 32 is fixed to the movable contact plate 19 in a state where the coil spring 32 is brought into surface contact with the coil spring 32.

Alternatively, as shown in FIGS. 43 (a) and 43 (b), the left and right sides of the projecting piece 19b of the central piece 19a are knocked out in opposite directions, and the portion of the central piece 19a on which the flat surface 19d is formed is placed in the center. It may be configured to protrude in directions opposite to each other in a direction substantially perpendicular to the plane direction of the piece 19a. Further, as the portion of the central piece 19a on which the flat surface 19d is formed goes outward from the connection portion with the protruding piece 19b, the amount of projection of the central piece 19a in the direction substantially orthogonal to the plane direction gradually increases. If this is the case, the contact area with the coil spring 32 becomes larger as compared with the case where the portion where the flat surface 19d is formed is flush with other portions, so that the coil spring 32 is attached to the movable contact plate 19. In this state, there is an advantage that the position of the coil spring 32 is further stabilized, and the reversing operation of the contact portion 8 can be performed stably.

(Embodiment 10) FIGS. 44 (a) and (b) are exploded perspective views of switches S1 and S2 of the present embodiment, and one switch S1 is a single pole switch (single-cut) similar to that of the first embodiment. Switch) and the other switch S2
Is a so-called D-contact two-pole switch (double-sided switch). Here, since the basic configuration of the two types of switches S1 and S2 is common, only one switch S1 will be described.
Regarding the other switch S2, the same components as those of the switch S1 are denoted by the same reference numerals, and description thereof is omitted. Also,
Since the basic configuration of the switch S1 is the same as that of the switch of the first embodiment, the same reference numerals are given to the same components as those of the switch of the first embodiment, and description thereof will be omitted.

As shown in FIGS. 44 to 46, the body 10 of the switch S1 of this embodiment also includes a body 1 and a cover 2 made of synthetic resin. An isolation wall 108 is provided upright from the center bottom surface of the body 1 along the longitudinal direction.
A partition wall 109 is provided upright at one end of 08 in a direction substantially orthogonal to the isolation wall 108. Thus, by partitioning the inside of the body 1 by the isolation wall 108 and the partition wall 109, the first
And terminal storage portion 10 for storing second terminal portions T1 and T2
3 and 103 are provided at both ends in the longitudinal direction of the body 1, and a pair of central storage portions 104 ₁ and 104 ₂ for accommodating the movable contact plate 19 are provided at both sides of the isolation wall 108 at the central portion divided by the isolation wall 108. is there. Also, each terminal housing 103 of the body 1
Two electric wire insertion holes 16 are arranged on the bottom surface of the body 103 so as to be arranged in the short width direction of the body 1.
An operation hole 18 penetrates between 6.

The first terminal portion T1 is composed of a pair of terminal plates 120, 120, two lock springs 15, and a release button 17 which are in a mirror image relationship with each other. The terminal plate 120 is formed by bending a strip-shaped metal plate to form a contact piece 120a and a contact piece 120c at both ends of a base piece 120b, and a support piece 120d extends from a tip end of the contact piece 120c. The two base plates 120 are arranged in a state where two terminal boards 20 are arranged.
b are connected to each other by a connecting piece 120e to be integrally formed. The lock spring 15 is arranged between the contact piece 120a and the contact piece 120c of each terminal board 120 such that the central piece 15a contacts the contact piece 120c.

The first terminal portion T1 configured as described above
The release button 17 is positioned substantially at the center of one terminal storage portion 103 of the body 1 so that the lower portion of the release button 17 faces the operation hole 18.
The terminal plate 120 and the lock spring 15 are stored in the terminal storage portions 103 ₁ and 103 ₂ divided into two by the release button 17, respectively, so as to be stored inside the body 1. Thus, similarly to the first embodiment, when an electric wire is inserted into the body 10 through the electric wire insertion hole 16, the insulating core of the electric wire is removed, and the exposed core wire becomes the contact piece 120 a and the pressing piece 15 c.
And the lock piece 15b, and the core wire is
The first terminal portion T1 and the core wire 101 are electrically connected and mechanically held by contacting the first terminal portion Ta. Also, if a tool is inserted into the operation hole 18 and the release button 17 is pressed while the electric wire is connected, the lock piece 15b bends away from the core wire to release the mechanical holding of the electric wire, and the electric wire is removed. 10
It becomes possible to pull out from.

On the other hand, the second terminal portion T2 is composed of a pair of terminal plates 121, 121, two lock springs 15, and a release button 17, which are also mirror images of each other. Terminal board 121
The contact piece 121a and the leg piece 121c are formed at both ends of the base piece 121b by bending a strip-shaped metal plate into a substantially U-shape, and two second terminal boards 121 are arranged. In this state, the base pieces 121b are connected to each other by the connection pieces 121e to be integrally formed. The fixed contact 21 is fixed to the tip of the leg piece 121c.

The second terminal portion T2 has the lower portion facing the operation hole 18 so that the other terminal storage portion 103 of the body 1 can be used.
The release button 17 is movably housed substantially at the center of the
The terminal plate 121 and the lock spring 15 are stored in the terminal storage portions 103 ₃ and 103 ₄ divided into two by the above, so that they are stored in the body 1. At this time, as shown in FIG. 45, the central piece 15a of the lock spring 15 abuts against the partition wall 109 separating the terminal storage section 103 and the central storage sections 104 ₁ and 104 _2, and the leg piece 121c of the terminal plate 121 straddles the partition wall 109. Thus, the fixed contact 21 fixed to the distal end portion is advanced to the central storage portions 104 ₁ and 104 ₂ . Thus, like the first terminal portion T1, the core wire of the electric wire inserted from outside through the electric wire insertion hole 16 is engaged with the lock piece 15b of the lock spring 15.
When the release button 17 is pressed and held between the contact piece 15c and the contact piece 121a of the terminal board 121, the terminal board 1
The connection between 21 and the electric wire can be released.

Incidentally, the support pieces 1 of the two terminal plates 120
A fulcrum recess 120f serving as a swing fulcrum of the movable contact plate 19 is formed at the tip of 20d. Central storage unit 10
_4, 1042 The body 1 opposite side surfaces in ₂ are projecting the restricting rib 41 which projects inwardly, a state of housing the first and second terminal portions T1, T2 to the terminal accommodating portion 103 of the body 1 To move the movable contact plate 19 to the central storage portion 104 ₁ (or 10
4 ₂ ), the lower edge of the movable contact plate 19 is connected to the terminal plate 1.
The fulcrum recess 120 provided at the tip of the support piece 120d
f, and the movable contact plate 19 is rotatably disposed about the fulcrum recess 120f as a fulcrum. At this time, the movable contact plate 1
By locking the overhanging piece 19c of 9 and the regulating rib 41, the movable contact plate 19 is prevented from rotating and the rotation range is regulated.

Since the cover 2 has the same structure as that of the first embodiment, the description is omitted. The reversing handle 30 has the same structure as that of the first embodiment except that two bar-shaped projections (not shown) for inserting and fixing the upper portion of the coil spring 32 are provided. The operation handle 38 has substantially the same structure as that of the first embodiment. However, in this embodiment, since the lighting display unit 52 is not provided, instead of the hole 54 for the prism 55, a projection 38a having a substantially oval outer shape is provided. It is provided. The projection 38a serves as a guide for visually judging the state of the switch S1 (whether the fixed contact 21 and the movable contact 29 are in contact with or separated from each other).

Therefore, when the operating handle 38 is swung between the two operating positions as in the first embodiment, the movable contact 24 is electrically connected to the movable contact 24 via the movable contact plate 19 in accordance with the operating position of the operating handle 38. Can be turned on and off between the first terminal portion T1 connected to the fixed contact 21 and the second terminal portion T2 electrically connected to the fixed contact 21.

[0122] In Thus, the connecting piece 120e, houses the first and second terminal portions T1 while leaving 121e, T2 to the terminal accommodating portion 103, respectively, the movable contact plate 19 in a central housing portion 104 ₁ of the one When the body 1 and the cover 2 are assembled by pressing the lower part of the coil spring 32 housed and inserted and fixed to one of the bar-shaped projections of the reversing handle 30 into the projecting piece 19b of the movable contact plate 19, the switch S1 as a single-pole switch is provided. Can be configured. On the other hand, connecting pieces 120e, 121
The terminal plates 120 and 121 obtained by cutting and cutting the e are stored in the terminal storage portions 103 _{1 to} 103 ₄ , respectively, the movable contact plates 19 are stored in the _two central storage portions 104 ₁ and 104 _2, and the reversing handle 30 is stored. When the body 1 and the cover 2 are assembled by press-fitting the lower portions of the coil springs 32 inserted and fixed to both the rod-shaped projections into the projecting pieces 19b of the movable contact plate 19, a switch S2 as a two-pole switch can be configured. That is, if the first and second terminal portions T1 and T2 are stored in the body 10 as they are, the single-pole switch S1 is formed. 121 is the body 10
When the movable contact plate 19 and the coil spring 32 are added, the switch becomes a two-pole switch S2. And 2-pole switch S
2 can be used in common. In particular, it is not necessary to separately prepare a mold for the body 1 for a single-pole switch and a two-pole switch, so that rationalization and cost reduction can be achieved.

The switches S1, S of this embodiment are
Reference numeral 2 denotes a so-called wide handle type switch in which the size of the operation handle 38 is relatively large. In order to make the switch look slim and compact (small) in appearance and improve the appearance, FIG.
An operation handle 38 having a structure as shown in FIG. 7 may be used. A groove 141 running along a direction perpendicular to the longitudinal direction is formed at one longitudinal end of the front surface of the operation handle 38. At the approximate center of the groove 141 in the longitudinal direction, a slender projection 142 having a rounded tip is protruded, and holes 143 penetrating the operation handle 38 are formed at both ends of the groove 141. A recess (not shown) serving as a concave / convex locking portion is formed at the back of a hole (not shown) formed at one end of the hole. A handle line 145 made of a long plate is attached in the groove 141. Handle line 14
A window hole 146 through which the projection 142 is inserted is formed substantially in the center of the groove 5, and a protrusion 147 that protrudes and locks into a recess provided at one end of the groove 141 at one end in the longitudinal direction. I have. A locking claw 148 protruding rearward is provided at a position corresponding to the hole 143 at the other end in the longitudinal direction of the handle line 145, and a claw 149 protruding outward is provided at the tip of the locking claw 148. Is protruding. Thus, when attaching the handle line 145 to the operation handle 38, first, the protrusion 147 of the handle line 145 is inserted into a hole on one end side of the groove 141, and the handle line 145 is rotated with the protrusion 147 as a fulcrum. Then, the locking claw 148 of the handle line 145 is inserted into the hole 143 on the other end side of the groove 141, and the claw 149 provided at the tip of the locking claw 148 and the hole 1 are inserted.
The handle line 145 is attached to the operating handle 38 by locking the edge of the handle 43. At this time,
The projection 142 is inserted into the window hole 146 of the handle line 145, and the tip of the projection 142 protrudes from the front surface of the operation handle 38. Can be determined.

The switches S1 and S2 of the present embodiment
46, the width of the body 10 in the short width direction is substantially equal to the width of the operation handle 38 as shown in FIG. It has become. Here, the operation handle 38 having such dimensions is referred to as a three-piece handle. On the other hand, in the case where two pieces are attached to the attachment frame in the short width direction, as shown in FIG. (Referred to as an individual handle) may be attached to the reversing handle 30. When only one handle is mounted on the mounting frame, as shown in FIG. 49, the operation handle 38 "(referred to as" one handle ") formed to have a width three times as large as the three handles is inverted handle. 30 may be attached.

(Embodiment 11) Embodiment 10 relates to a single-pole switch and a two-pole switch, but this embodiment relates to a three-way switch and a four-way switch used for single-pole switching. However, the basic configuration is the same as in the ninth embodiment.
In addition, since they are common to the tenth embodiment, the same components are denoted by the same reference numerals, and description thereof is omitted.

FIGS. 50 (a) and 50 (b) are exploded perspective views of the switches S3 and S4 of the present embodiment, and one switch S3 is a three-way switch having a so-called C contact structure.
The other switch S4 is a so-called E-contact four-way switch. Here, since the basic configuration of the two types of switches S3 and S4 is common, only one switch S3 will be described.
Regarding the other switch S4, the same components as those of the switch S3 are denoted by the same reference numerals, and description thereof is omitted.

The second terminal portion T3 in this embodiment is
It comprises two terminal plates 122 and 123 having different shapes, a lock spring 15 and a release button 17. The terminal plate 122 is formed by bending a strip-shaped metal plate, and a contact piece 122a and a leg piece 122c are formed at both ends of a base piece 122b, and a laterally extending piece 122d extends from the tip of the leg piece 122c. Are extended, and fixed contacts 21a and 21b are fixed to the base of the leg piece 122c and the tip of the extension piece 122d, respectively. Also, the other terminal plate 123 is formed by bending a strip-shaped metal plate, and has contact pieces 123a and leg pieces 123c formed at both ends of a base piece 123b, and from the tip of the leg piece 123c to the side. The extension piece 123d is extended, and the leg piece 1 is further extended.
Fixed contacts 21c and 21d are fixed to the base of 23c and the tip of extension piece 123d, respectively, and terminal plates 122 and 123 are fixed.
Are arranged side by side and the base pieces 122b and 123b are connected to each other by a connection piece 122e to be integrally formed. When the terminal plates 122 and 123 are stored in the terminal storage portions 103 ₃ and 103 ₄ , respectively, the leg piece 122 c of the terminal plate 122 is connected to the one central storage portion 104 as shown in FIG.
With advances in _1, leg 123c of the terminal plate 123 is advanced to the other central housing portion 104 _2, the other central with two fixed contacts 21a to one of the central housing portion 104 _1, 21d are opposed two fixed contacts 21b in the holding section 104 in _2, 21c are opposed. In the present embodiment, the partition 108 is not provided at the center of the body 1 so as not to interfere with the extension pieces 122d and 123d.

On the other hand, the movable contact plate 19 has movable contacts 24a and 24b fixed to both front and back surfaces, and the movable contact 24a and the fixed contact 21a (or 21c) face each other.
b and the fixed contact 21d (or 21b) are stored in the central storage portion 104 ₁ (or 104 ₂ ) so as to face each other.

When the reversing handle 30 is rotated with respect to the body 10 by pressing the operation handle 38, the movable handle 30 is movable by the action of the coil spring 32 compressed and stored in the body 10. The contact plate 19 is rotated in the reverse direction, so that the movable contacts 24 ₁ and 24 ₂ of the movable contact plate 19 can be alternately brought into contact with and separated from the fixed contacts 21 a of the terminal plate 122 and the fixed contacts 21 d of the terminal plate 123. , The conduction of the two terminal plates 122 and 123 to the terminal plate 120 is selectively turned on.
A three-way switch that turns off can be realized.

[0130] That is, the connecting piece 120e, it is contained in the first and second terminal portions T1, T3 respectively terminal accommodating portion 103 while leaving 122e, central housing portion 104 ₁ of the one
The movable contact plate 19 is stored in the
Coil spring 32 inserted and fixed to one of the rod-shaped projections
Is pressed into the protruding piece 19b of the movable contact plate 19 to assemble the body 1 and the cover 2, a switch S3, which is a three-way switch, can be configured. On the other hand, connecting pieces 120e, 12
Terminal plate 120 and terminal plate 12 obtained by cutting and separating 2e
2 and 123 are accommodated in the terminal accommodating portions 103 _{1 to} 103 ₄ , the movable contact plates 19 are accommodated in the _two central accommodating portions 104 ₁ and 104 ₂ , respectively, and inserted and fixed to both bar-shaped projections of the reversing handle 30. When the body 1 and the cover 2 are assembled by pressing the lower portions of the coil springs 32 into the projecting pieces 19b of the movable contact plate 19, a switch S4, which is a four-way switch, can be configured. Thus, in the present embodiment, as in the tenth embodiment, the first and second terminal portions T1, T
If 3 is stored in the housing 10 as it is, a three-way switch S3 is obtained. Each of the pair of terminal plates 120, 122, 123 cut by the connecting pieces 120e, 122e and divided into two is housed in the housing 10, respectively. If the movable contact plate 19 and the coil spring 32 are added, a four-way switch S4 is obtained. Therefore, several parts including the body 1 conventionally having a different structure for each type of switch are replaced with a three-way switch S3 and a four-way switch S4. S4 can be shared, and it is not necessary to prepare separate molds for the body 1 particularly for the three-way switch and the four-way switch, so that rationalization and cost reduction can be achieved.

By the way, as shown in FIG. 53, in the present embodiment, a plurality of irregularities 115 are formed along the depth direction on the inner wall surface facing the central storage portions 104 ₁ and 104 ₂ of the body 1. The unevenness 115 increases the creeping distance between the first and second terminal portions T1 and T3 to increase
1 and T3 can be improved in insulation. Also, the terminal plate 12
0 and irregularities 115 on the side edges of the terminal plates 122 and 123.
Fittings 120g, 122f, 123f fitted in the concave portions of
Are protruded, and the fitting pieces 120g, 122f, 123
By fitting f into the concave portion, rotation of each terminal plate 120, 122, 123 with respect to body 1 can be prevented. In this embodiment, as shown in FIG. 54, an operation handle 38 with a handle line 145 may be used, or two or one handle may be used.

By the way, regarding the four-way switch S4,
As in the ninth embodiment, a configuration including a position indicating lamp 53 may be adopted. FIG. 55 and FIG.
The road switch S4 'is shown. In this switch S4 ', a lighting indicator 52 having a position indicator light 53 made of a neon lamp is incorporated in the reversing handle 30, and the position indicator light 53 is provided in an opening 34 formed in the front surface of the reversing handle 30.
Is facing. An elongated hole 54 penetrating the operation handle 38 is formed in a portion of the groove 141 of the operation handle 38 corresponding to the window hole 146 of the handle line 145. The prism 55 made of a light guide member has a hole 5
4 and a hole 146, which has an elongated protrusion 56 with a rounded end at the tip projecting from the front surface of the handle line 145, and the protrusion 56 is inserted into the hole 54 from the back side of the operation handle 38. In this state, it is swaged and fixed to the operation handle 38. Thus, the operation handle 38 is moved to the inversion handle 30.
, The incident surface 57 of the prism 55 is disposed so as to face the position indicating lamp 53.

On the other hand, the lighting display section 52 is configured by mounting a position indicator lamp 53 and a resistor R on a circuit board 52a formed of a synthetic resin into a substantially H shape. Then, the circuit board 52
The light display portion 52 is housed in the reversing handle 30 by press-fitting the narrow portion of a between the bar-shaped protrusions in the reversing handle 30. At this time, the position indicating lamp 53 and the terminals 53a, 58a of the resistor 58 are connected to the two coil springs 32, 32.
Are in contact with each other. Therefore, when power is supplied to the load via the first and second terminals T1 and T3, the position indicating lamp 53 is turned off, and the first or second terminals T1 and T3 are turned off.
1, when the power is not supplied to the load via T3, the position indicating lamp 53 is turned on,
5 is incident on the entrance surface 57, is refracted in the prism 55, and exits from the convex portion 56 to indicate the position of the switch S4 '.

[0134]

According to the first aspect of the present invention, as described above, the range of applicable electric wires can be expanded, and an electric wire having a stranded wire as a core wire can be connected.

According to the second aspect of the present invention, the dimension from the connection portion of the pressing piece to the central piece to the tip can be made longer while suppressing an increase in the size of the entire lock spring as compared with the conventional art. Since the force required to bend the piece is reduced, the range of applicable electric wires can be expanded, and there is an effect that stranded wires can be connected.

According to the third aspect of the present invention, when a core wire is inserted between the locking piece and the terminal plate, the tip of the locking piece bent in a direction away from the terminal plate comes into contact with the tip of the pressing piece to press the locking piece. The piece is bent, and as a result, the feeling of insertion of the core wire at the time of connection is improved, and there is an effect that insertion failure of the core wire can be prevented.

According to the fourth aspect of the present invention, it is possible to prevent the lock piece from interfering with the pressing piece when the lock piece is bent by the release button, so that the release button can be easily released. is there.

According to the fifth aspect of the present invention, there is an effect that a stranded wire can be easily inserted by providing a gap between the leading edge of the lock piece and the terminal plate.

According to the invention of claim 6, since the contact position between the core wire and the pressing piece changes according to the diameter of the core wire, there is an effect that the rotation of the lock spring can be prevented and the holding of the core wire can be stabilized.

According to the seventh aspect of the present invention, since the terminal plate and the lock spring abut on a substantially flat portion, rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized. effective.

According to the eighth aspect of the present invention, since the projection of the body and the fitting groove of the lock spring are fitted, rotation of the lock spring when inserting the core wire can be prevented, and the holding of the core wire can be stabilized. There is an effect that can be made.

According to the ninth aspect of the present invention, the lock spring is supported when the support piece is in contact with the body to support the lock spring, so that the lock spring can be prevented from rotating when the core wire is inserted, and the holding of the core wire is stabilized. There is an effect that can be.

According to the tenth aspect of the present invention, since the locking portion of the lock spring is locked to the body, rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized. There is an effect that can be.

According to the eleventh aspect of the present invention, since the lock piece is supported by contacting the supporting piece with the container, the rotation of the lock spring when the core wire is inserted can be more reliably prevented, and the core wire can be held. Can be further stabilized.

According to the twelfth aspect of the present invention, since the fitting piece of the lock spring is fitted into the groove of the body, rotation of the lock spring when the core wire is inserted can be prevented, and the holding of the core wire can be stabilized. There is an effect that can be.

According to the thirteenth aspect, since the fitting pieces are provided at symmetrical positions, it is not necessary to consider the directionality at the time of assembling, and there is an effect that the assembling property can be improved.

According to the fourteenth aspect, there is an effect that the number of parts can be reduced to improve the assemblability.

According to the fifteenth aspect of the present invention, since the lock spring is held by the holding portion of the terminal plate, the lock spring can be prevented from rotating when the core wire is inserted, and the holding of the core wire can be stabilized. is there.

According to the sixteenth aspect of the present invention, if the core wire of the electric wire passes between the guide projections, the core wire is not spread but is sandwiched between the lock springs. Since the wire is held between the projection and the lock spring, there is an effect that even if the wire has a stranded wire as a core wire, the wire connection operation can be performed only by inserting the wire into the wire insertion hole provided in the body.

According to the seventeenth aspect of the present invention, even if the core wire made of a stranded wire attempts to spread, the core wire is driven between the two guide projections, so that the core wire can be prevented from spreading. .

According to the eighteenth aspect of the present invention, the core wire can be pressed against the terminal plate by the lock piece, and a relatively large holding force against the core wire can be secured.

According to the nineteenth aspect of the present invention, the core wire introduced into the body is guided so as to pass between the two guide projections, so that even if the core wire is a stranded wire, the core wire can be expanded. Collectively, there is an effect that it is possible to securely hold the lock spring and the terminal plate.

According to the twentieth aspect of the present invention, foreign matter adhering to the surface of the core wire can be removed by the unevenness of the knurl portion, and the electrical connection between the terminal plate and the core wire can be improved.
Further, since the guide projection is provided to regulate the portion through which the core wire passes, the knurled portion may be formed within the restricted range, and there is an effect that the area of the knurled portion can be reduced.

According to the twenty-first aspect, the provision of the guard piece can prevent the core wire from being inserted into an unnecessary portion, and the guard piece restricts the portion through which the core wire passes. Even if the wire is a stranded wire, the core wire can be held between the lock spring and the terminal plate by restricting the spread of the core wire, and even if the wire is a stranded wire as the core wire,
There is an effect that the connection work can be performed only by inserting the electric wire into the electric wire insertion hole provided in the container.

According to the twenty-second aspect of the present invention, even if a part of the core wire made of a stranded wire is widened, the release button guides the core wire along the main piece of the terminal plate at least up to the contact position between the pressing piece and the core wire. Therefore, the core wire can be prevented from being inserted into an unnecessary part, the spread of the core wire can be suppressed, the core wire can be held between the main piece of the terminal plate and the lock spring, and a relatively large holding force on the core wire can be obtained. Therefore, even if the electric wire has a stranded wire as a core wire, there is an effect that the connection operation can be performed only by inserting the electric wire into the electric wire insertion hole provided in the body.

According to the twenty-third aspect, it is not necessary to check the left and right of the release button with respect to the left and right directions during assembly.
There is an effect that assemblability is improved.

According to the twenty-fourth aspect of the present invention, a creepage distance longer than a linear distance between the main pieces can be ensured when insulating adjacent main pieces from each other, and the width of the body in the direction in which the straight lines extend can be reduced. This makes it possible to reduce the size of the body.

According to the twenty-fifth aspect, there is an effect that the movement of the release button becomes smooth.

According to the twenty-sixth aspect, there is an effect that the surface in the vicinity of the contact portion with the lock tablet can be easily formed into a curved surface which linearly contacts the lock tablet.

According to the twenty-seventh aspect of the present invention, since the rib does not hinder the insertion of the tool into the operation hole to remove the core wire, the operability of the release button does not decrease, and the electric wire is supported by the rib. There is an effect that the connection stability of the core wire can be improved.

According to the twenty-eighth aspect of the present invention, the gap between the inner side surface of the container and the terminal plate is smaller than that of the prior art, and even when a core wire having a small diameter such as a stranded wire is connected, the core wire has the gap. There is an effect that there is no danger of intrusion, and problems such as short circuit and insulation failure do not occur.

According to the twenty-ninth aspect of the present invention, there is an effect that the intrusion of water droplets or the like into the space for housing the terminal plate can be suppressed by retaining the water droplets or the like entering from the outside in the recess.

According to the thirtieth aspect, there is an effect that the creepage distance between the first and second terminal portions is increased to improve the insulating property.

According to the invention of claim 31, there is an effect that rotation of the terminal plate can be prevented.

According to the thirty-second aspect of the present invention, the contact area between the opening / closing member and the coil spring is increased as compared with the case where the coil spring comes into contact with a chamfer provided at the end of the opening / closing member.
Even when the opening / closing body rotates, the position of the coil spring with respect to the opening / closing body can always be stabilized.
There is an effect that the reversing rotation power of the coil spring is reliably applied to the opening / closing body, so that the opening / closing operation of the contact portion can be stably performed.

According to the thirty-third aspect of the present invention, the projecting piece abuts on the regulating rib to prevent the opening / closing body from rotating, thereby restricting the rotation range. In comparison with the case where the overhanging piece is provided near the contact portion with the terminal plate, shavings and the like generated due to friction between the overhanging piece and the regulating rib are accumulated in the contact portion between the opening and closing body and the first terminal plate. Can be prevented, and the turning operation of the opening / closing body can be stabilized, so that the opening / closing operation of the contact portion can be stabilized.

According to the thirty-fourth aspect of the present invention, if the first and second terminal portions are housed in the body as they are, a single-pole switch can be obtained.
A pair of first and second terminal plates cut into two parts by cutting at the connecting portion are housed in the body, respectively, and a part of the opening and closing mechanism including the opening and closing body is added to form a two-pole switch. In addition, some parts including the body can be shared between the single-pole switch and the two-pole switch, and the cost can be reduced.

According to the thirty-fifth aspect of the present invention, if the first and second terminal portions are housed in the housing as they are, a three-way switch is obtained.
A pair of first and second terminal plates cut into two parts by cutting at the connecting portion are respectively housed in the body, and a four-way switch is obtained by adding parts of an opening and closing mechanism including an opening and closing body. There is an effect that some parts including the body can be shared for the three-way switch and the four-way switch, and the cost can be reduced.

According to the thirty-sixth aspect, there is an effect that the creepage distance between the first terminal portion and the second terminal portion is increased to improve the insulating property.

According to the thirty-seventh aspect, there is an effect that rotation of the first and second terminal plates can be prevented.

According to the thirty-eighth aspect of the present invention, the unipolar switch, the bipolar switch, and the
A road switch and a four-way switch can be separately formed, and there is an effect that switches of different types can be easily manufactured.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the same.

3A and 3B show the same as above, wherein FIG. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is another side view.

FIG. 4 is a sectional view of a main part of the above.

FIG. 5A is a plan view showing a conventional lock spring, and FIG. 5B is a plan view showing a lock spring according to the first embodiment.

FIG. 6A is a side view showing a conventional terminal portion, and FIG. 6B is a side sectional view showing a terminal portion in the first embodiment.

FIG. 7A is an operation explanatory diagram of a conventional example, and FIG. 7B is an operation explanatory diagram of the first embodiment.

FIG. 8 is an explanatory diagram of the above.

FIG. 9 is an explanatory diagram of the above.

FIG. 10A is a plan view of the lock spring in the same as above.
(B) is a top view which shows the front-end | tip part of the press piece of a lock spring.

FIG. 11 is an exploded perspective view of the terminal unit in the above.

FIGS. 12A and 12B show a terminal plate used in the above, wherein FIG. 12A is a plan view and FIG. 12B is a longitudinal sectional view.

FIG. 13 is a sectional view of a main part of the above.

FIGS. 14A to 14C are cross-sectional views each showing an example of a terminal plate used in the above.

FIG. 15 is an exploded perspective view showing another example of the configuration of the terminal section in the above.

16A and 16B show a terminal plate used in the configuration example shown in FIG. 15, wherein FIG. 16A is a plan view and FIG. 16B is a longitudinal sectional view.

FIG. 17 is a sectional view showing a state where the cover is removed.

FIG. 18 is a perspective view of a release button used in the embodiment.

FIG. 19 is a side view of a release button used in the embodiment.

FIGS. 20A and 20B show the same as above, in which FIG. 20A is a cross-sectional view of a main part showing an attached state of a movable contact plate, and FIG.

FIG. 21 is an explanatory view of a movable contact plate and a terminal plate having another configuration in the above.

FIG. 22 is a front view of a movable contact plate having still another configuration in the above.

FIG. 23 is a perspective view of a lock spring according to the second embodiment.

FIG. 24 is a perspective view of a lock spring according to the third embodiment.

FIG. 25 is a sectional view of a main part of the above.

FIG. 26 is a cross-sectional view of a principal part showing the fourth embodiment.

FIG. 27 is a perspective view showing another configuration of the lock spring of the above.

FIG. 28 is a perspective view of a lock spring according to the fifth embodiment.

FIG. 29 is a perspective view showing another configuration of the lock spring of the above.

FIG. 30 is a perspective view showing still another configuration of the lock spring of the above.

FIGS. 31A and 31B show a terminal plate and a movable contact plate in Embodiment 6, wherein FIG. 31A is a partially cutaway side view, and FIG.

32 (a) is a side view and FIG. 32 (b) shows a seventh embodiment.
Is a rear view.

FIG. 33 is a sectional view of a main part of the above.

FIG. 34 is an explanatory diagram of the above.

FIG. 35 is a cross-sectional view showing the eighth embodiment with a cover removed.

FIG. 36 is a perspective view showing a main part of the above.

FIG. 37 is an explanatory diagram of the above.

FIG. 38 is an exploded perspective view of the ninth embodiment.

FIG. 39 is a sectional view of the above.

40 (a) is a front view, FIG. 40 (b) is a side view, and FIG. 40 (c) is another side view.

FIG. 41 (a) is a perspective view of a movable contact plate in the above,
(B) is a top view of a movable contact plate and a coil spring.

FIG. 42 shows a movable contact plate having another configuration according to the above embodiment;
(A) is an external perspective view, (b) is a top view.

FIGS. 43A and 43B show still another configuration of the movable contact plate of the above, wherein FIG. 43A is an external perspective view and FIG. 43B is a top view.

FIG. 44 shows the tenth embodiment, wherein (a) is an exploded perspective view of a single-pole switch, and (b) is an exploded perspective view of a two-pole switch.

FIG. 45 is a side sectional view of the same.

46 (a) and 46 (b) show the above, wherein (a) is a front view, (b) is a side view, and (c) is another side view.

FIG. 47 is an exploded perspective view showing another operation handle of the above.

FIG. 48 shows a case using the above-mentioned two handles,
(A) is a front view, (b) is a side view, and (c) is another side view.

FIG. 49 shows a case using the one-handle as above;
(A) is a front view, (b) is a side view, and (c) is another side view.

FIG. 50 shows the eleventh embodiment, in which (a) is an exploded perspective view of a three-way switch, and (b) is an exploded perspective view of a four-way switch.

FIG. 51 is a side sectional view of the same.

52 (a) is a front view, FIG. 52 (b) is a side view, and FIG. 52 (c) is another side view.

FIG. 53 is a perspective view showing a main part of the body in the above.

FIG. 54 is an exploded perspective view showing another operation handle of the above.

FIG. 55 is an exploded perspective view showing the four-way switch with the position indicator light of the above.

FIG. 56 is a side sectional view showing the four-way switch with the position indicator light according to the above.

FIG. 57 is an exploded perspective view showing a conventional example with a part omitted.

FIG. 58 is a side cross-sectional view of the same with a part omitted;

59 is a side cross-sectional view of the above, with a part omitted;

[Explanation of symbols]

6 ₁ First terminal part 6 ₂ Second terminal part 8 Contact part 10 Body 11 First terminal plate 12 Second terminal plate 15 Lock spring 16 Wire insertion hole 17 Release button 19 Movable contact plate 21 Fixed contact 24 Movable contact 30 Reversing handle 32 Coil spring 38 Operation handle

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tetsuyasu Kawamoto 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. 72) Inventor Yasuhiro Sumino 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. 5E051 BA04 BB01 BB03 5G035 AA09 CA01 CB04 DA16

Claims (38)

[Claims] A contact portion having a fixed contact and a movable contact that comes into and out of contact with the fixed contact; a first terminal portion that electrically connects the fixed contact to an external electric wire; A second terminal portion for electrically connecting an external electric wire;
An opening and closing mechanism for opening and closing the contact portion by contacting and separating the movable contact from and to the fixed contact; and a container housing the contact portion, first and second terminal portions, and the opening and closing mechanism inside. And an operation unit that is provided to be swingable outside the container and is operated to drive the opening and closing mechanism unit to open and close the contact unit. The first and second terminal units are A terminal plate that is electrically connected to the fixed contact or the movable contact and that comes into contact with a core wire of an electric wire introduced into the body through a wire insertion hole penetrating the body, and a spring facing the terminal plate; A lock spring having a locking piece for holding the core wire between the terminal plate and the terminal plate by elastically contacting the urged edge with the core wire inserted from the side of the terminal plate; Being operated through the operation hole penetrating near the wire insertion hole And a release button for bending the lock piece of the lock spring in the anti-elastic contact direction, and has a structure in which a range of applicable electric wires is expanded and a core wire made of a stranded wire can be connected. switch. 2. The lock spring according to claim 1, wherein the lock spring is formed by bending a conductive plate material having elasticity, so that the center piece is disposed to face the terminal plate, and the locking piece is moved from a connection portion with the center piece toward a tip edge. The lock plate that is inclined toward the terminal plate, the terminal plate extending from the connection portion with the central piece toward the terminal plate, and having a distal end pressing a core wire toward the terminal plate. And a pressing piece that elastically clamps the core wire is formed therebetween, and this pressing piece is bent so that the distance between the center piece and the center piece becomes the narrowest on the distal end side from the connection portion with the center piece. The switch according to claim 1, wherein 3. The switch according to claim 2, wherein a distal end of the pressing piece that contacts the core wire is disposed near a distal edge of the lock piece. 4. The switch according to claim 2, wherein a portion of the pressing piece facing the lock piece is curved in a direction away from the lock piece. 5. The switch according to claim 2, wherein the lock spring is formed such that a gap is provided between the distal end edge of the lock piece and the terminal plate without inserting a core wire. 6. The switch according to claim 2, wherein a plurality of rounds projecting in a direction contacting the core wire are attached to a tip end of the pressing piece. 7. The switch according to claim 1, wherein portions of the terminal plate and the lock spring that come into contact with each other along the core wire insertion direction are formed substantially flat. 8. The switch according to claim 1, wherein a fitting groove is provided in said lock spring to be fitted with a projection protruding from said body. 9. The switch according to claim 1, wherein a support piece for supporting the lock spring in contact with the body is provided on the lock spring. 10. The switch according to claim 1, wherein a locking portion for locking the body is provided on the lock spring. 11. The switch according to claim 10, wherein a support piece for supporting said lock spring in contact with said body is provided on said lock spring. 12. The switch according to claim 1, wherein a fitting piece that fits into a groove provided in the container is provided on the lock spring. 13. The switch according to claim 12, wherein a plurality of said fitting pieces are provided at symmetric positions of said lock spring. 14. The switch according to claim 12, wherein said fitting pieces of a plurality of lock springs adjacent to each other in said body are connected and integrally formed. 15. The switch according to claim 1, wherein a holding portion for holding the lock spring is provided on the terminal plate. 16. The switch according to claim 1, wherein a pair of guide projections are provided on both sides of a portion of the terminal plate where the core wire comes into contact with the portion where the core wire is introduced. 17. The switch according to claim 16, wherein at least ends of the guide projections on the side close to each other are formed in a spherical shape. 18. The switch according to claim 16, wherein the guide projection is formed at a position facing a part of an edge of the lock piece. 19. The switch according to claim 16, wherein the pair of guide projections are arranged so as to decrease the distance from each other toward the distal end side of the core wire. 20. The terminal plate according to claim 1, wherein a knurled portion is formed at a portion of the terminal plate that comes into contact with the core wire, and the knurled portion alternates in the insertion direction of the core wire.
The switch according to 6. 21. The switch according to claim 1, wherein a guard piece protrudes along a side edge of the lock piece on a surface of the terminal plate where the core wire comes into contact. 22. The locking piece is spring-biased toward the main piece of the terminal plate, and the release button is provided with the two main pieces arranged side by side in the body in a state of being assembled in the body. Pressing pieces respectively abutting on the lock pieces of the two opposing lock springs are respectively provided on both side faces, and are interposed between the adjacent main pieces and between the lock springs and in the insertion direction of the core wire. 2. The switch according to claim 1, wherein the switch is extended from at least the vicinity of the wire insertion hole to at least a contact position between the pressing piece and the core wire. 23. The switch according to claim 22, wherein the release button is formed in a symmetrical shape when a direction orthogonal to a surface of the terminal plate contacting the core wire is a left-right direction. . 24. The switch according to claim 22, wherein the release button is formed with a groove that intersects a straight line connecting the adjacent main pieces on a distal end face in the insertion direction of the core wire. 25. The locking piece according to claim 22, wherein the pressing piece is formed in a curved shape such that a surface near a contact portion with the locking piece is in linear contact with the locking piece. switch. 26. The release button according to claim 22, wherein the release button is made of a synthetic resin molded product, and a parting line portion is provided in a portion of the push piece other than a surface facing the lock piece. Switch. 27. The switch according to claim 1, wherein a rib is formed around the electric wire insertion hole except at least a part around the operation hole. 28. The switch according to claim 1, wherein a protrusion protruding toward the terminal plate is provided on an inner side surface of the container facing a side surface of the terminal plate along a core wire insertion direction. 29. The switch according to claim 28, wherein the body is constituted by assembling a body and a cover, and a concave portion is provided between a butt surface of the body and the cover and the protrusion. 30. The switch according to claim 28, wherein one or a plurality of irregularities are provided on an inner surface of the body located between the first and second terminal portions. 31. The terminal device according to claim 30, wherein a fitting piece that fits into the unevenness on the inner surface of the container is provided on the first and second terminal plates. 32. An opening / closing body, wherein the opening / closing mechanism section is formed in a flat plate shape from a conductive material, has a movable contact on one surface, and rotates in a state of being in contact with a first terminal plate provided in the first terminal section. And a coil spring having one end held by the operation unit and the other end held by the opening / closing body, and applying a reversing rotation power to the opening / closing body in accordance with a rotation operation of the operation unit, A projecting piece inserted into the other end of the coil spring is provided at a portion of the opening / closing body facing the coil spring, and a flat surface that is in surface contact with the other end of the coil spring is provided on both sides of the projecting piece. The switch according to claim 1, wherein the switch is formed. 33. An overhanging piece protruding laterally on a side of the opening / closing body other than a side in contact with the first terminal plate and other than a part in contact with the first terminal plate. A regulating rib is provided integrally with the opening / closing body, and when the opening / closing body rotates in a direction in which the movable contact is separated from the fixed contact, the regulating rib contacts the overhanging piece and regulates a rotation range of the opening / closing body. 33. The switch according to claim 32, wherein the switch is provided on the body. 34. The open / close device, comprising: an operating unit that swings between two operating positions; and an opening / closing body to which the movable contact is fixed, wherein the opening / closing unit rotates the opening / closing body in conjunction with the operation of the operating unit. A first terminal unit connected to an external electric wire and having two first terminal plates having means for making contact and conduction with the opening / closing body, wherein the second terminal is connected to the first terminal unit. 2. The switch according to claim 1, wherein the portion is formed by connecting two second terminal plates each connected to an external electric wire and having a fixed contact fixed thereto. 35. An operating part swinging between two operating positions and an opening / closing body to which two movable contacts are fixed, wherein the opening / closing body is rotated in conjunction with an operation of the operating part. The opening / closing mechanism section, wherein the first terminal section is connected to two first terminal plates having an external electric wire connected thereto and having a means for making contact and conduction with the opening / closing body, and Are connected to an external electric wire, and two second fixed contacts are fixed to each other so as to face each other.
2. The switch according to claim 1, wherein the terminal plates are connected. 36. A housing for accommodating the first and second terminal portions, which is provided at both ends of the body and one or a plurality of irregularities are formed on a substantially central inner wall surface of the body. A switch according to claim 34 or claim 35. 37. The switch according to claim 36, wherein a fitting piece that fits into irregularities on the inner wall surface of the casing is provided on the first and second terminal plates. 38. The method of manufacturing a switch according to claim 34, wherein the first and second terminal portions are housed in the body as they are, and the connecting portion is cut into two in advance. And a step of storing the divided first and second terminal plates in the housing respectively.