JP2002151175A - Terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal device capable of preventing its terminal plate from rattling without impairing the easiness in assembling operation. SOLUTION: The terminal device 30a includes a lock spring 33 which holds an electric wie inserted into a tool body through an insertion hole provided penetrating the tool body at the terminal plate 31 in connection therewith. The terminal plate 31 has a hold-down piece 31a to hold the wire pinchedly in the area to the lock spring 33, and at its 31a confronting surface to the inside surface of the tool body in the thickness direction, rattle preventing projections 36 to abut dottedly to the inside surface are arranged in the wire extending direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device which is housed in a body of an electric appliance such as a switch, an outlet, and a lighting device and which connects an electric wire.

[0002]

2. Description of the Related Art Conventionally, in a wiring device such as a switch or an outlet, or a lighting device, a terminal device called a quick connection terminal for connecting a wire inserted into a body through a wire insertion hole provided in the body. Is widely used. As this type of terminal device, for example, as shown in FIG.
Terminal plate 31 which comes into contact with electric wire 2 inserted into terminal plate 3 and terminal plate 3
A lock spring 33 for holding the electric wire 2 between the lock spring 1 and the lock spring 33 is known. The locking spring 33 is a leaf spring, and is formed so as to hold the electric wire 2 by sandwiching the electric wire 2 between an end of a locking piece 33 b provided on the locking spring 33 and the terminal plate 31. I have. That is, when the wire 2 is inserted into the body 1 through the wire insertion hole 12 provided in the body 1, the wire 2
Deflects the locking piece 33b in a direction to separate it from the pressing piece 31a of the terminal plate 31, whereby the electric wire 2 is moved between the pressing piece 31a and the locking piece 33b of the terminal plate 31 by the spring force generated in the locking piece 33b. It is comprised so that it may be pinched. Here, in a state where the electric wire 2 is sandwiched between the terminal plate 31 and the locking piece 33, the end edge of the locking piece 33 b elastically contacts the electric wire 2 and the locking piece 33 b bites into a part of the electric wire 2. The wire 2 is prevented from falling off. In this manner, the wire 2 is held in a state in which the wire 2 is in contact with the terminal plate 31 only by inserting the wire 2 into the wire insertion hole 12.
The connection work of the electric wire 2 becomes easier as compared with a terminal device for connecting the electric wires 2.

The terminal plate 31 shown in FIG. 7 has a pressing piece 31a with which the electric wire 2 contacts, and a fixed contact 31 at the tip.
Are provided, and a connecting piece 31c for continuously and integrally connecting the pressing piece 31a and the contact holding piece 31d, while the body 1 has a body 10 having an open front surface.
And a cover 20 coupled to the front side of the body 10. The terminal plate 31 is formed on the inner surface of the body 10 near one longitudinal end (right end in FIG. 7) of the body 10. One side of the holding piece 31a is inserted and held in a holding groove (not shown). Here, in the terminal plate 31, one side of the holding piece 31a is inserted into the holding groove from the front side of the body 10.

[0004]

However, in the terminal device having the above-mentioned conventional construction, the pressing piece 3 of the terminal plate 31 is not assembled at the time of assembling.
1a is easily inserted into the holding groove.
Since the width of the holding groove is set to be slightly larger than the thickness of the holding groove 31a, a gap is formed between the holding piece 31a and the inner peripheral surface of the holding groove in the thickness direction of the holding piece 31a (the left-right direction in FIG. 7). The terminal board 31 is formed when the electric wire 2 is inserted.
Is tilted as shown in FIG. 8 (rotating in the direction of arrow A in FIG.
The gap between the inner peripheral surface and the inner surface facing the wire becomes smaller as the distance from the wire insertion hole increases.) In short, in the terminal device having the above-described conventional configuration, there is a problem that the terminal plate 31 rattles in the body 1. Further, if the width of the holding groove is reduced, the position of the terminal plate 31 in the body 1 is easily stabilized. However, it is difficult to insert the holding piece 31a into the holding groove, and the assemblability is deteriorated. there were.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal device which can prevent rattling of a terminal plate without impairing assemblability.

[0006]

According to a first aspect of the present invention, there is provided a terminal board housed in a housing, wherein:
A lock spring for connecting and holding an electric wire inserted through an electric wire insertion hole provided in the housing between the terminal plate and the terminal plate, the terminal plate having a side portion inserted into a holding groove provided in the housing. A holding piece for holding the electric wire between the locking spring and the locking piece, the holding piece having a point-like abutment against the inner peripheral surface of the body in a thickness direction in a surface facing the inner peripheral surface; The pressing piece is characterized in that the holding piece has a rattling preventing projection which abuts on the inner peripheral surface in a point-like manner on the surface facing the inner peripheral surface of the container in the thickness direction. Since the protrusion is provided, the rattling prevention projection of the holding piece comes into contact with the inner peripheral surface of the body, preventing the terminal plate from tilting when inserting the wire without making the width of the holding groove narrower than before. The terminal plate can be prevented from rattling in the body. In short, it is not necessary to make the width of the holding groove narrower than before, and since the rattling preventing projections abut on the inner peripheral surface of the container body in a point-like manner, the terminal plate can be assembled without impairing the assemblability. The rattling can be prevented.

According to a second aspect of the present invention, in the first aspect of the present invention, the pressing piece is provided with a plurality of the rattling preventing projections, so that rattling of the terminal plate in the housing is reduced. it can.

According to a third aspect of the present invention, there is provided a terminal board which is held in a body and a locking spring which connects and holds an electric wire inserted through an electric wire insertion hole penetrating the body between the terminal board and the terminal board. Become
The terminal plate includes a holding piece having a side portion inserted into a holding groove provided in the housing and holding the electric wire between the holding spring and a locking spring, and an extension piece facing the holding piece, and the extension piece is provided. The surface opposite to the surface facing the holding piece abuts on a holding projection protruding into the body, and an extension piece facing the holding piece is provided on the terminal plate, and Since the surface opposite to the surface facing the presser piece of the set comes into contact with the holding protrusion protruding into the body, the terminal plate tilts when inserting the wire without making the width of the holding groove narrower than before. Can be prevented, and the terminal plate can be prevented from rattling in the body. In short, since it is not necessary to make the width of the holding groove narrower than in the conventional case, it is possible to prevent rattling of the terminal plate without impairing the assemblability.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the pressing piece has a backlash which abuts on the inner peripheral surface in a point-like manner on a surface facing the inner peripheral surface of the container in a thickness direction. Since the prevention projection is provided in a protruding manner, the rattling prevention projection of the holding piece abuts on the inner peripheral surface of the body, so that the rattling of the terminal plate in the body can be more reliably prevented. .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments described below, an example in which the terminal device of the present invention is applied to a switch will be described, but this does not prevent application of a similar configuration to other electric devices.

First, a switch to which the terminal device is applied will be described. The switch shown in FIGS. 3 to 5 has a rectangular parallelepiped synthetic resin molded body 10 having an open front surface (the upper surface in FIG. 3), and a synthetic resin molded product formed in a rectangular frame shape and coupled to the front surface of the body 10. The container 1 includes a product cover 20. A pair of assembling protrusions 11 are provided on both outer side surfaces in the width direction of the body 10 so as to be spaced apart from each other in the longitudinal direction of the body 10, and an assembling tongue piece 21 extends rearward from a rear edge of the cover 20. The body 10 and the cover 20 are connected by engaging the assembly protrusion 11 with the assembly hole 21a provided in the assembly tongue piece 21.

An electric wire 2 inserted into the body 1 through an electric wire insertion hole 12 provided in a rear wall of the body 10 is provided in the body 10.
(See FIG. 7) Terminal devices 30a, 30b for connection, and a contact device 4 for opening and closing an electric path between the terminal devices 30a, 30b.
0 are stored two each. Meanwhile, the cover 20
A reversing handle 50 made of a synthetic resin molded product is mounted on the opening window 22 at the center of the cover so as to be pivotably supported on the cover 20. It is opened and closed. An operation handle 60 of a synthetic resin molded product overlapping the front surface of the cover 20 is detachably connected to the front side of the inversion handle 50, and the inversion handle 50 swings by swinging the operation handle 60 as an operation unit. The contact device 40 is opened and closed.

The terminal devices 30a and 30b are disposed in both longitudinal ends of the body 10, and the contact device 40 is connected to the body 1
0 in the center in the longitudinal direction. On the inner surface of the body 10, two partition walls 13 and two holding grooves 14 for positioning the terminal device 30a are formed.

The terminal devices 30a and 30b are composed of terminal plates 31 and 32 made of a conductive metal plate and
A lock spring 33 provided for each of the two terminal plates 31 and 32; and a release button 34 of a synthetic resin molded product which abuts against the two lock springs 33 provided for each of the two terminal plates 31 and 32. Is provided.

Each of the terminal plates 31 is located near one end (the left end in FIG. 5) of the body 10 in the longitudinal direction.
Pressing piece 3 having one side inserted into holding grooves 14 provided on both inner side surfaces in the width direction of 0 and holding electric wire 2 with locking spring 33.
1a, a contact holding piece 31d located at the center in the longitudinal direction of the body 10 and having the fixed contact 41, and an opening of the body 10 so as to continuously and integrally connect the front end edges of the holding piece 31a and the contact holding piece 31d. Connecting piece 31c extended along the surface
And In other words, the terminal plate 31 is
A contact holding piece 31d, which is extended from c and has a fixed contact 31 at the distal end, extends obliquely rearward (downward in FIG. 5) toward the center in the longitudinal direction of the body 10. Here, the connecting piece 31c is located so as to intersect with the inserting direction of the pressing piece 31a into the holding groove 14, and abuts on the front end edge of the partition wall 13 that partitions the one end and the central part in the longitudinal direction of the body 10. . In the terminal device 30a, the locking spring 3
3 is stored between the holding piece 31a and the partition wall 13.

Each terminal plate 32 is connected to the body 1
In the vicinity of the other end (the right end in FIG. 5) in the longitudinal direction of O, one side is inserted into the holding grooves 14 provided on both inner side surfaces of the body 10, and the presser clamps the electric wire 2 between the holding spring 14 and the locking spring 33. Piece 32
a, a contact piece 32b opposed to the pressing piece 32a, and a connecting piece 32c extended along the opening surface of the body 10 so as to continuously and integrally connect the front ends of the pressing piece 32a and the contact piece 32b. And In the terminal device 30b, the locking spring 33 is housed between the pressing piece 32a and the contact piece 32b. A support piece 32d extends from the rear end edge of the contact piece 32b to the central portion in the longitudinal direction of the body 10 along the rear surface of the body 10 on the terminal plate 32. Is a fulcrum groove 32e having a V-shaped cross section opened at the front.
Are formed so as to be orthogonal to the extension direction of the support piece 32d.

The locking spring 33 is formed by bending one end of a band-shaped leaf spring into an S-shape to form a contact piece 33a and bending the other end into a J-shape to form a locking piece 33b. Then, the contact piece 33a and the lock piece 33b are formed in a shape that is continuously and integrally connected by the connection piece 33c. The contact piece 33a and the lock piece 33b protrude from the connection piece 33c on the same side in the thickness direction.

The locking spring 33 is connected to the pressing piece 31a of the terminal plate 31.
When mounting between the partition wall 13 of the body 10 and the connecting piece 33c, the contact piece 33a and the locking piece 33b face the pressing piece 31a in such a manner that the connecting piece 33c abuts on the partition wall 13. When the locking spring 33 is mounted between the pressing piece 32a of the terminal plate 32 and the contact piece 32b, the connecting piece 33
The contact piece 33a and the locking piece 33b are made to face the pressing piece 32a in such a manner that c is brought into contact with the contact piece 32b. Here, the distal ends of the contact piece 33a and the lock piece 33b are inclined so as to be farther away from the connecting piece 33c toward the distal end, and are extended so as to be substantially parallel to each other. The distal ends of the contact piece 33a and the lock piece 33b are closer to the distal end than the connecting piece 31.
c, 32c are arranged so as to reduce the distance between them.

The above-mentioned wire insertion hole 12 is provided with a terminal plate 31,
When the electric wire 2 is inserted into the body 1 through the electric wire insertion hole 12 when the electric wire 2 is inserted into the portion corresponding to the space between the pressing pieces 31a, 32a and the contact piece 33a and the locking piece 33b, the tip of the electric wire 2 is pressed. 31a, 32a and the contact piece 33a and the locking piece 33b, and the electric wire 2
2a, the terminal devices 30a, 30b and the electric wire 2 are electrically connected to each other, and the leading edge of the locking piece 33b bites into the electric wire 2 so that the electric wire 2 does not come off from the body 1. Is held. In particular, since the locking piece 33b is inclined so as to reduce the distance between the holding pieces 31a and 32a in the direction in which the electric wire 2 is inserted through the electric wire insertion hole 12, the locking piece 33b is locked against the force of pulling out the electric wire 2. The piece 33b is unlikely to bend, and reliably prevents the wire 2 from being pulled out. Here, the electric wire 2 is an insulated wire and the portion to be inserted into the body 1 has the insulating coating removed so that the core wire is exposed. Therefore, to hold the electric wire 2 between the holding pieces 31a and 32a and the locking spring 33 means that the core wire is actually held.

An operation hole 15 is formed in the rear wall of the body 10 at a position corresponding to the release button 34. Each release button 34 is disposed between the two locking springs 33, respectively.
Two pressing pieces 34a respectively abutting on the rear surface side of the third lock piece 33b have a shape protruding from the side surface. Operation hole 1
5 has a shape such that a tool such as the tip of a flathead screwdriver can be inserted, and when the tool is inserted into the operation hole 15 and the release button 34 is pressed forward, the lock piece 33b is pressed by the push piece 34a.
When the pressing force is applied to the pressing pieces 31a, 32a, the pressing pieces 31a, 32a are bent away from the holding pieces 31a, 32a. Therefore, if a tool is inserted into the operation hole 15 and the release button 34 is pressed while the electric wires 2 are connected to the terminal devices 30a and 30b as described above, the lock pieces 33b bend away from the electric wires 2. The mechanical holding of the electric wire 2 is released, and the electric wire 2 can be pulled out from the body 1. Here, the release button 34 is provided with two pressing pieces 34a and simultaneously presses the locking pieces 33b of the two locking springs 33.
If the electric wires 2 are respectively connected to the terminals a and 30b, the mechanical holding of the two electric wires 2 can be simultaneously released by pressing one release button.

The contact device 40 includes a support piece 32 of the terminal plate 32.
The switching element 43 is provided with a plate-shaped switching element 43 pivotally supported with respect to d. The switching element 43 is provided with a movable contact 42 that is separated from and connected to the fixed contact 41 provided on the contact holding piece 31 d of the terminal plate 31. The rear edge of the opening / closing element 43 is formed on the support groove 32d provided on the support piece 32d.
e and the switching element 4 around the fulcrum groove 32e.
3 is rotatable. The opening / closing element 43 is provided on both sides in the width direction at the center of the body 10 in the longitudinal direction and at the rear of the body 10 and on both sides of the partition wall 17 provided along the longitudinal direction of the body 10 at the center. A V-shaped rotation restricting groove 16 into which a protruding piece 43a protruding from the edge is inserted is formed.
3 is restricted. A reversing spring 44 composed of a coil spring is held between each opening / closing element 43 and the reversing handle 50. A spring seat piece 43 inserted into one end of the reversing spring 44 is provided at a front end of the opening / closing element 43.
b is protruded.

The other end of each reversing spring 44 has a reversing handle 5
0 is inserted into a tubular portion (not shown) provided on the rear surface side. Here, since the reversing handle 50 needs to insulate both reversing springs 44 from each other, the reversing handle 44 is provided with two of the above-mentioned tubular portions. The fulcrum projections 51 are provided on both sides of the reversing handle 50 in the width direction of the container 1, and each of the fulcrum projections 51 is formed to have a tapered front end.
A pair of bearing projections 23 projecting forward from the peripheral edge of the opening window 22 is provided at the center in the longitudinal direction and on both sides in the width direction of the cover 20. The bearing recess 24 into which the fulcrum projection 51 of the handle 50 is inserted is formed. The bearing recess 24 pivotally supports the fulcrum projection 51 at least at the front end. Reversing handle 50
Connecting claws 53 for connecting the operation handle 60 to the reversing handle 50 are respectively protruded from both end surfaces in the longitudinal direction.

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

The operation handle 60 is, as shown in FIG.
A coupling leg 61 that covers a front surface of the reversing handle 50 and that is engaged with a coupling claw 53 provided on the reversing handle 50 protrudes from a rear surface of the operation handle 60. At the front end (rear end) of the connection leg 61, a leg claw 61a is formed to engage with the rear surface of the connection claw 53.
The reversing handle 50 is held between the leg 2 and the leg nail 61a,
As a result, the operation handle 60 is fixed to the reversing handle 50. Further, an annular pressing position indicating projection 63 is provided on the front surface of one end of the operating handle 60 in the longitudinal direction, and a pressing force is applied when electricity is supplied between the terminal devices 30a and 30b (that is, when the power is turned on). 3 indicates that the end on which the action is to be made is on the pressing position indicating projection 63 side. In addition, the push position indicating protrusion 6 is provided on the front surface of the operation handle 69.
Since an appropriate mark is given to a portion surrounded by 3, an end portion to which a pressing force is applied when energizing between both terminal devices 30 a and 30 b can be easily visually recognized.

The operation of the above-described switch will be briefly described. As shown in FIG. 5, when the right end of the operation handle 60 is located behind the left end (downward in FIG. 5), the movable contact 4
2 contacts the fixed contact 41. In this state, the reversing spring 44 is in a state in which the intermediate portion expands to the left from both ends, and the movable contact 42 is pressed against the fixed contact 41 by the reversing spring 44 to apply a contact pressure. On the other hand, when the left end of the operation handle 60 is pushed backward from this state, the front end of the reversing spring 44 moves to the right, so that the reversing spring 44 is rapidly expanded after being compressed, so that the middle portion is larger than the both ends. At this time, the opening / closing element 43 is tilted rightward to separate the movable contact 42 from the fixed contact 41. That is, the spring force of the reversing spring 44 acts in a direction to rotate the reversing handle 50 counterclockwise.

In this embodiment, since two sets of the terminal device 30a, the terminal device 30b, and the contact device 40 are provided, each contact device 40 can be inserted between the power source on both sides of the load. . In this sense, the switch of the present embodiment is a so-called double-cut switch. That is, by opening both contact devices 40, even if the load is grounded, no current flows from the power supply to the load, and safety can be improved.

By the way, in the switch of the present embodiment, as shown in FIG. 3, regulating protrusions 18 and 19 which oppose each other so as to regulate the movement of the connecting piece 31c of the terminal plate 31 in the width direction of the body 10. It is provided on the body 10. Here, each of the regulating projections 18 and 19 opposes both side edges of the connecting piece 31c. A concave portion 18a serving as a positioning portion is provided on the side of the regulating protrusion 18 facing the regulating protrusion 19.
The connecting piece 31c of the terminal plate 31 is provided on one side with an engaging convex portion 35 as an engaging portion that engages with the concave portion 18a. Therefore, the terminal plate 31 has the holding piece 31a inserted into and held in the holding groove 14, and the engaging projection 35 provided on one side of the connecting piece 31c has the recess 18a.
Are unevenly engaged. In addition, as shown in FIGS. 1 and 2, a plurality of pressing pieces 31 a of the terminal plate 31 abut on the inner peripheral surface of the body 10 in a point-like manner on the surface facing the inner peripheral surface of the body 10 in the thickness direction. The two rattling prevention protrusions 36 extend in the extending direction of the electric wire 2 (vertical direction in FIG. 1).
At the terminal plate 3 when the electric wire 2 is inserted.
1 can be prevented from tilting. In short, it is not necessary to make the width of the holding groove 14 narrower than before, and moreover,
The anti-rattle projections 36 abut on the inner peripheral surface of the body 1 in a point-like manner, so that the terminal plate 31 can be assembled without impairing the assemblability.
The rattling can be prevented. The rattling prevention protrusion 36
It is desirable to protrude at least at a portion away from the wire insertion hole 12 in the direction of extension of the wire 2 inserted into the body 1 from the wire insertion hole 12, and to provide a plurality of terminal boards 31
Can be more reliably prevented from tilting.

The cover 20 is provided with a protruding piece 28, which is in contact with the front face of the connecting piece 31c of the terminal plate 31 in a state of being connected to the body 10, so as to protrude from the rear face. The cover 20 is inserted from the front of the body 10 and positioned in the
The terminal plate 31 is prevented from rattling toward the front of the body 10.

By the way, the terminal plate 31 is
Although the rattling prevention protrusion 36 is provided in a protruding manner, instead of protruding the rattling prevention protrusion 36, as shown in FIG. 6, a surface facing the pressing piece 31a and facing the pressing piece 31a is formed. If the extension piece 38 whose opposite surface abuts the holding projection 71 protruding in the direction of extension of the electric wire 2 in the body 1 is provided, the width of the holding groove 14 can be reduced without reducing the width of the holding groove 14 as compared with the related art. It is possible to prevent the terminal plate 31 from tilting at the time of insertion of the connector 2, and to prevent the terminal plate 31 from rattling in the body 1. In short, also in this case, it is not necessary to make the width of the holding groove 14 narrower than in the related art, so that it is possible to prevent rattling of the terminal plate 31 without impairing the assemblability. Further, the above-mentioned anti-rattle projection 36 is provided on the pressing piece 31 of the terminal plate 31 in FIG.
Is provided, the backlash prevention projection 36 of the holding piece 31a abuts on the inner peripheral surface of the body 1, whereby the terminal plate 36 inside the body 1 can be more reliably prevented from rattling. it can.

In the above example, a so-called double-cut switch has been described as an example of the structure of the contact device 40. However, the technical concept of the present invention is not limited to the application to these switches. The present invention can be applied to a throw-type switch, a so-called four-way switch, a single-pole / single-throw switch (so-called one-sided switch), and a three-way switch. It is also possible to apply to lighting equipment and the like.

[0031]

According to the first aspect of the present invention, there is provided a locking spring for connecting and holding a terminal plate housed in a body and an electric wire inserted through a wire insertion hole provided through the body between the terminal plate and the terminal plate. The terminal plate includes a holding piece for inserting the side portion into a holding groove provided in the housing and holding the electric wire between the holding plate and the locking spring, and the holding piece is provided inside the housing in the thickness direction. An anti-rattle projection that protrudes in a point-like manner against the inner peripheral surface on a surface facing the peripheral surface is provided, and the pressing piece is a surface facing the inner peripheral surface of the container in the thickness direction. The projections are provided with anti-rattle projections that abut on the inner peripheral surface in a point-like manner, so that the anti-rattle projections of the holding piece abut against the inner peripheral surface of the container, thereby reducing the width of the holding groove. The terminal board can be prevented from tilting when the wire is inserted without making it narrower than before, and the terminal board can rattle inside the body. There is an effect that it is possible to prevent. In short, it is not necessary to make the width of the holding groove narrower than before, and since the rattling preventing projections abut on the inner peripheral surface of the container body in a point-like manner, the terminal plate can be assembled without impairing the assemblability. The rattling can be prevented.

According to a second aspect of the present invention, in the first aspect of the present invention, the pressing piece is provided with a plurality of the anti-rattle projections, so that the terminal plate has less rattling in the body. There is an effect that can be.

According to a third aspect of the present invention, there is provided a terminal plate which is held in a body and a locking spring which connects and holds an electric wire inserted through a wire insertion hole penetrating the body between the terminal plate and the terminal plate. Become
The terminal plate includes a holding piece having a side portion inserted into a holding groove provided in the housing and holding the electric wire between the holding spring and a locking spring, and an extension piece facing the holding piece, and the extension piece is provided. The surface opposite to the surface facing the holding piece abuts the holding projection protruding into the body, and the terminal plate is provided with an extending piece facing the holding piece, and the holding piece in the extending piece is provided. Since the surface opposite to the opposite surface abuts the holding projection protruding into the body, it is possible to prevent the terminal plate from tilting when inserting the electric wire without making the width of the holding groove narrower than before. There is an effect that the terminal plate can be prevented from rattling in the body. In short, since it is not necessary to make the width of the holding groove narrower than in the conventional case, it is possible to prevent rattling of the terminal plate without impairing the assemblability.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the pressing piece is a point-shaped backlash which abuts on the inner peripheral surface of the container in the thickness direction in a surface facing the inner peripheral surface. Since the prevention projection is provided in a protruding manner, the rattling prevention projection of the holding piece abuts on the inner peripheral surface of the body, so that the rattling of the terminal plate in the body can be more reliably prevented. This has the effect.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram of a terminal plate used in the embodiment.

FIG. 3 is an exploded perspective view showing a switch using the above.

FIGS. 4A and 4B show a switch using the above, wherein FIG. 4A is a front view, FIG. 4B is a bottom view, and FIG. 4C is a side view.

FIG. 5 is a cross-sectional view of a switch using the above.

FIG. 6 is an explanatory diagram of a terminal plate used in another configuration example of the embodiment.

FIG. 7 is a sectional view of a main part of a switch using a conventional terminal device.

FIG. 8 is an explanatory diagram of a terminal plate used in the above.

[Explanation of symbols]

 30a Terminal device 31 Terminal plate 31a Pressing piece 31c Connecting piece 31d Contact holding piece 33 Lock spring 33a Contact piece 33b Lock piece 33c Connection piece 36 Anti-rattle projection

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kutsuna 1048 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. Inventor Hiroyuki Tateishi 1048 Kazuma Kadoma, Kazuma City, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. 1285 Gomono, Misato-mura, Aki-gun, Mie Prefecture F-term in Hayama Denki Mfg. Co., Ltd. 5G035 AA09 AA25 CB01 5G052 AA12 BB03 HA02

Claims (4)

[Claims] 1. A terminal plate housed in a housing, and a locking spring for connecting and holding an electric wire inserted through an electric wire insertion hole provided in the housing between the terminal plate and the terminal plate. A holding piece for inserting the side part into a holding groove provided in the body and holding the electric wire between the holding spring and the locking spring, and the holding piece is provided on a surface facing the inner peripheral surface of the body in the thickness direction. A terminal device characterized in that a rattling prevention projection is provided on the inner peripheral surface so as to abut in a point-like manner. 2. The terminal device according to claim 1, wherein the holding piece is provided with a plurality of the rattling preventing projections. 3. A terminal plate held in a housing, and a locking spring for connecting and holding an electric wire inserted through an electric wire insertion hole provided in the housing between the terminal plate and the terminal plate. A holding piece having a side inserted into a holding groove provided in the housing and holding the electric wire between the holding spring and a locking spring; and an extension piece facing the holding piece, wherein the extension piece is a holding piece. A surface opposite to the surface opposite to the terminal abuts on a holding projection protruding into the body. 4. The pressing piece is characterized in that a rattling preventing projection is provided on a surface facing the inner peripheral surface of the container in a thickness direction, the anti-rattle projection projecting from the inner peripheral surface in a point-like manner. The terminal device according to claim 3.