JP2003163043A - Terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin terminal device which connects wires without using screws. <P>SOLUTION: The terminal device A comprises a terminal plate block 36a, a pair of lock springs 60 for the terminal block 36a, and a release button 65 for the pair of lock springs 60. Each center piece 61 of the pair of lock springs 60 is made to abut a corresponding abut piece 38 of the terminal plate block 36a, while each lock piece 62 and contact piece 63 thereof are positioned facing a corresponding terminal piece 37 of the terminal plate block 36a. With the lock pieces 62 of the pair of lock springs 60 located opposite each other, a release button 65 is positioned between both the lock springs 60 in such a manner that a pressing projection 66 faces the lock pieces 62. That is, the pair of lock springs 60 are lined up so that the lock pieces 62 bend in the same plane when connecting wires. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device capable of connecting electric wires without using screws.

[0002]

2. Description of the Related Art As a terminal device of this type, as shown in FIGS. 28 to 30, a pair of locking springs for elastically holding an electric wire between a terminal plate 90 to which the electric wire is connected and the terminal plate 90. 6
Conventionally, a terminal device having a so-called quick-connect terminal structure, which is configured by 0 and a release button 92 that simultaneously releases the connection state between the pair of locking springs 60 and the electric wire, has been provided.

The terminal plate 90 has a central piece 91a and side pieces 91b, 9 extending from both ends of one side edge of the central piece 91a.
1b and a side piece 91 extending from the other side edge of the center piece 91a
The U-shaped portion 91 composed of c and c is continuously and integrally formed.

A locking piece 62 and a contact piece 63 of the locking spring 60.
Are formed at both ends of the central piece 61 by bending both ends of a strip of a conductive material having elasticity. The center piece 61 of the locking spring 60 abuts on the side piece 91c of the terminal plate 90, and the locking piece 62 is inclined toward the side piece 91b of the terminal plate 90 from the connecting portion with the center piece 61 toward the tip edge. To do. Further, the contact piece 63 of the locking spring 60 is bent in a substantially S shape, and the locking piece 62 and the contact piece 63 face the side piece 91b of the terminal plate 90.

As shown in FIG. 28, this terminal device is housed inside a terminal housing chamber 12 provided in the body 10.
Here, the pair of locking springs 60 are arranged side by side in a direction substantially orthogonal to the bending direction of the locking piece 62 with the release button 92 sandwiched therebetween. Pressing projections 92a are provided so as to come into contact with the locking pieces 62, respectively. A cutout 91d is formed at the lower end of the side piece 91b in order to prevent interference with the pressing projection 92a of the release button 92. Further, as shown in FIG. 29, on the bottom surface of the terminal accommodating chamber 12, the wire insertion port 15 is provided corresponding to a portion between the locking piece 62 of the locking spring 60 and the side piece 91b of the U-shaped portion 91. Is opened, and a through hole 16 for inserting a tool is opened in a portion corresponding to the release button 92.

Here, when connecting an electric wire to this terminal device, the electric wire insertion port 15 provided on the bottom surface of the terminal accommodating chamber 12
When the core wire from which the coating of the electric wire has been peeled off is inserted, the electric wire is inserted between the locking piece 62 and the contact piece 63 of the locking spring 60 and the side piece 91b of the U-shaped portion 91, and the locking piece 62 The tip bites into the core wire to prevent it from coming off, and the core wire is sandwiched between the locking piece 62 and the contact piece 63 and the side piece 91b by the spring force of the locking spring 60, so that the electric wire and the terminal plate 90 are separated from each other. It is designed to be electrically connected. Therefore,
By simply inserting the core wire from the wire insertion port 15, the core wire is held and the terminal plate 90 is electrically connected.

On the other hand, when the electric wire connected to the terminal device is to be removed, the tip of a tool such as a flat-blade screwdriver is inserted through the through hole 16 provided in the bottom surface of the terminal accommodating chamber 12 to release the release button 92 in FIG. When pushed up, the pressing projection 92a of the release button 92 pushes up the locking piece 62 of the locking spring 60 obliquely upward and bends the locking piece 62 in the direction away from the side piece 91b of the U-shaped portion 91. The locking piece 62 is separated from the core wire of the electric wire, and the electric wire can be easily pulled out. Each terminal device is provided with two locking springs 60, but one of the two locking springs 60 is connected to the electric wire from the power source side, and the other is connected to the feeding electric wire. Connected

[0008]

In the terminal device having the above construction, the pair of locking springs 60 are arranged side by side in the direction substantially orthogonal to the bending direction of the locking piece 62 with the release button 92 interposed therebetween. Therefore, the outer dimension of the locking piece 62 in the direction substantially orthogonal to the bending direction is large, and the outer dimension of the terminal device is large in both length and width. That is, when the pair of locking springs 60 are arranged side by side in the direction substantially orthogonal to the bending direction of the locking piece 62, the external dimensions of the terminal device become large in both length and width as shown in FIG. When the terminal device is used as a wiring device for embedded wiring, the external size of 10 becomes large, and the wiring device body cannot be inserted into a switch box for embedding the wiring device body. I was afraid.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a thin terminal device to which electric wires can be connected without using screws.

[0010]

In order to achieve the above object, according to the invention of claim 1, a pair of terminal plates are elastically held by being bent by electric wires inserted between the terminal plates. Elastic member and a releasing member for simultaneously bending the pair of elastic members in the direction of releasing the connection state of the electric wires, and when connecting the electric wires, the pair of elastic members bend so as to bend in the same plane. The members are arranged side by side, and the pair of elastic members are arranged side by side so as to bend in the same plane when connecting the electric wires, so that when the pair of elastic members are arranged in a direction orthogonal to the bending direction. Compared to the length dimension is longer, the thickness dimension can be reduced,
It is possible to reduce the thickness of the terminal device.

According to a second aspect of the invention, in the first aspect of the invention, each elastic member is inclined such that the tip approaches the terminal plate in the wire insertion direction, and the tip bites into the core wire of the inserted wire. It consists of a locking spring with a locking piece that clamps the electric wire between it and the terminal plate, and the pair of locking springs are arranged with the locking pieces facing each other, and the release member is the release operation. At the time, it has a pair of pressing projections for pressing the locking pieces of both locking springs, respectively, and is arranged between both locking springs so that each pressing projection faces each locking piece, The same operation as the invention of claim 1 is achieved.

According to a third aspect of the invention, in the first aspect of the invention, each elastic member is swingably attached to the terminal plate and holds the electric wire between one end portion in the swing direction and the terminal plate. The pressing piece, and an urging means for urging one end of the pressing piece in the swinging direction toward the terminal plate.
The pressing pieces are arranged in a row so that the other ends in the swinging direction are adjacent to each other, and the release member presses the other end of each pressing piece toward the terminal plate during the release operation, In the direction in which one end of each pressing piece separates from the terminal board,
Each holding piece is swung, and the same operation as the invention of claim 1 is achieved.

According to a fourth aspect of the present invention, in the first aspect of the present invention, each elastic member is arranged so as to face the terminal plate and clamps an electric wire between the elastic member and the terminal plate, and a direction in which the pressing piece approaches the terminal plate. And the urging means are arranged such that the directions of urging the pressing pieces are opposite to each other with the releasing member in between, and the releasing member is provided with the urging means. It is arranged so as to be movable between a position where it abuts and reduces the amount of bending of both biasing means to release the connection state of the electric wire, and a position where the amount of bending of both biasing means is increased to hold the electric wire. It has the same function as the invention of claim 1.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a terminal device according to the present invention will be described with reference to the drawings.

(Embodiment 1) An embodiment in which the terminal device according to the present invention is applied to an embedded wiring device such as an outlet will be described with reference to FIGS. In the following description, unless otherwise specified, the up, down, left, and right directions are defined in the direction of FIG. 2A, and the front surface in FIG. 2A is referred to as the front surface. Therefore, the upper end in FIG. 2B is the rear end.

The body 1 of the outlet B comprises a box-shaped body 10 made of synthetic resin and having an open front, and a cover 20 made of synthetic resin and attached to the front side of the body 10. Formed. Here, the body 10 and the cover 20
In order to join the two, the tapping screw is inserted from the rear of the body 10 through the insertion hole 18 formed in the rear wall of the body 10 with the front surface of the body 10 and the rear surface of the cover 20 abutting each other. A tapping screw may be screwed into the screw hole 23 provided on the rear surface of the 20.

The cover 20 has a plate portion 20a formed in substantially the same shape as a plate frame for an embedded wiring device,
The plate portion 20a is formed of a rectangular tubular portion 20b that is continuously and integrally projected from the rear surface of the plate portion 20a.

On the front surface of the plate portion 20a, a horizontally long protruding portion 21 is provided in a protruding manner, and a cylindrical plug body of a so-called C-type plug (not shown) is fitted into the protruding portion 21 from the front. The recesses 24, 24 to be formed are formed side by side.
Further, on the front surface of the plate portion 20a, a screw (not shown) used when attaching the plate portion 20a to the embedded box having the front surface opened on both left and right sides with the projecting portion 21 interposed therebetween.
Is provided with a fixing hole 28.

On the bottom surface of each recess 24 provided in the plate portion 20a, there is one insertion portion 50 into which a pair of blades provided in one plug and a blade for a ground electrode can be inserted. Minutes are formed. The insertion part 50 has two insertion ports 5
1, 51 and the insertion opening 5 different in shape from the insertion opening 51
2 and.

Each insertion port 51 is formed in a shape in which a flat blade insertion port 51a into which the flat blade is inserted and a pin type blade insertion port 51b into which the pin blade is inserted communicate with each other. . That is, the flat blade insertion opening 51a has a rectangular shape, and the circular pin blade insertion opening 51b communicates with one side edge of one end portion in the longitudinal direction. Pin-type blade insertion slot 51b rather than the distance between the centers of 51a
The distance between the centers of is wider. Further, each insertion port 52 is for inserting a plug blade for a ground electrode (pin type blade), and is provided below a substantially middle portion of the two insertion ports 51, 51. As shown in FIGS. 3 (a) and 3 (b), a door body 55 that covers the insertion opening 51 in an openable and closable manner is housed inside the body 1, and the door body 55 is movably supported by an inner frame 56. Has been done.

Further, in the recess 24 of the cover 20, contact pieces 41, 48 of a grounding member 40, which will be described later, are drawn into the recess 24 from the rear surface side of the cover 20, and the contact pieces 41, 4 are formed.
Slits 25, 25 for securing the movement space of 8 are formed. The upper slit 25 is formed on the inner side surface of the recess 24, and the lower slit 25 is formed in an L shape across the bottom surface and the inner side surface of the recess 24.

On the other hand, the inside of the body 10 is partitioned into a plurality of storage chambers by a partition wall 11 standing from the bottom surface.
Terminal storage chambers 12a and 12b are provided in the upper portion of FIG.
Are provided on both left and right sides. Further, the ground member storage chambers 14a, 14 are provided in the lower portion of the inside of the body 10 in FIG.
b is provided on both left and right sides, and a terminal storage chamber 12c is provided between both storage chambers 14a and 14b. Further, four blade receiving spring storage chambers 13a to 13d are provided side by side in the left-right direction at an intermediate portion in the vertical direction inside the body 10. In addition, a pair of electric wire insertion ports 15 and a through hole 16 are provided on the bottom surface of each of the terminal storage chambers 12a to 12c. The through hole 16 is open at one end side of the recess 17 that is one step lower than the back surface of the body 10, and the bottom surface of the recess 17 is inclined so as to gradually incline toward the outside (rearward) as the distance from the through hole 16 increases. The surface 17a is formed (see FIG. 4C).

FIG. 3A is a front view showing a state where the cover 20 is removed, and the blade receiving spring storage chambers 13a and 13c are provided with blade receivers electrically connected to a flat blade or a pin blade. Part 3
2 are stored respectively. The blade receiving portion 32 has a pair of spring pieces 33a facing each other, and a flat blade for blade insertion of the flat blade between the spring pieces 33a (see FIG. 11). A blade receiving spring 34 (see FIG. 13) for a pin-type blade having a pair of opposing spring pieces 34a into which the pin-type blade is inserted.
The two blade receiving springs 33, 33 are continuously and integrally connected via a connecting piece 35 to form a terminal plate 31a.
The blade receiving springs 34 for pin type blades are caulked and fixed to a pair of caulking pieces 39 provided on the terminal plate 31a.

Similarly, the blade receiving spring storage chambers 13b and 13d are provided.
Also, the blade receiving portions 32 electrically connected to the flat blade or the pin blade are respectively housed. The blade receiving portion 32 includes a blade receiving spring 33 for a flat blade and a blade receiving spring 3 for a pin blade.
As shown in FIG. 12, the blade receiving springs 33, 33 for the flat blade blade and the connecting piece 35 for connecting the blade receiving springs 33, 33 are continuously and integrally formed to form a terminal plate. And 31b. Then, the blade receiving springs 34 are caulked and fixed to the pair of caulking pieces 39 provided on the terminal plate 31b. At this time, the flat blade insertion opening 51 provided on the cover 20
The flat blade inserted into a is sandwiched between a pair of spring pieces 33a of the blade receiving spring 33, and the pin blade inserted into the pin blade insertion opening 51b is a pair of blade receiving springs 34. Spring piece 3
It is sandwiched between 4a.

Here, the connecting pieces 35, 35 of the two terminal plates 31a, 31b are formed by bending the substantially intermediate portions of the portions arranged in the terminal accommodating chambers 12a, 12b into convex shapes, respectively. Terminal pieces 37, 37 facing the locking piece 62 and the contact piece 63 of 60 are formed back to back,
Further, the central piece 61 of the locking spring 60 is provided at the portions corresponding to both side portions in the longitudinal direction of the terminal accommodating chambers 12a and 12b.
Abutting pieces 38, 38 that abut with are formed facing the terminal pieces 37, 37, respectively. Here, each connecting piece 35,
A pair of terminal pieces 37 and abutting piece 3 respectively provided on 35.
The terminal block blocks 36a and 36b are composed of eight.

Further, in the ground member storage chambers 14a and 14b, there are housed blade receiving members 45 connected to the plug blades for the ground electrode (pin blades) inserted through the insertion openings 52, respectively. The blade receiving member 45 includes a pair of L-shaped spring pieces 46, 46 facing each other as shown in FIGS.
And a connecting piece 47 connecting between the two spring pieces 46, 46,
The connecting piece 47 has a substantially L-shaped contact piece 48 that extends continuously from the upper end of the connecting piece 47 and that contacts the ground electrode of the C-type plug, and is integrally connected to a grounding member 40 described below. here,
The contact piece 48 of the blade receiving member 45 is formed to be narrower than the connecting piece 47, and a groove 48a is formed along the extending direction from the connecting piece 47 to have flexibility.

As shown in FIGS. 14A to 14C, the ground member 40 is disposed along the upper side surface of the body 10 and contacts the ground electrodes of the C-shaped plugs from the front edges of the left and right sides of the body 10 in a substantially L-shape.
Support piece 42 in which a letter-shaped contact piece 41 is continuously and integrally extended
And the terminal board block 4 housed in the terminal housing chamber 12c
4 and a connecting piece 43 that continuously and integrally connects the support piece 42 and the terminal plate block 44. Terminal block 4
4 is a pair of terminal pieces 44a, 44a extending continuously and integrally from both side edges of the lower end of the connecting piece 43 and facing the locking piece 62 and the contact piece 63 of the locking spring 60, and the terminal pieces 44a, 44.
a contact pieces 44c, 44c that are arranged to face a and abut against the central piece 61 of the locking spring 60, respectively, and the terminal pieces 44a, 44.
The connecting pieces 44b and 44b for connecting between a and the contact pieces 44c and 44c are integrally formed. Here, the contact piece 41 is formed to be narrower than the connecting portion with the support piece 42, and has a groove 41a formed along the extending direction from the support piece 42 to have flexibility. .

Further, from the rear end edges of the contact pieces 44c, 44c, crimping pieces 44d, 44d arranged in the ground member storage chambers 14a, 14b are continuously and integrally extended, and each crimping piece 44d is provided. The connecting piece 47 of the blade receiving member 45 described above is caulked and fixed. At this time, the contact piece 41 provided on the grounding member 40 and the contact piece 48 provided on the blade receiving member 45 are opposed to each other, and the tip ends are urged toward each other.
Since it protrudes inward from the slit 25 provided on the inner surface of the recess 24, when the plug body of the C-type plug is fitted from the front of the body 1, it contacts the ground electrode formed on the side surface of the plug body. It comes into contact with the ground electrode and is surely in contact with the ground electrode while being bent outward.

Here, the terminal device A of the present embodiment has the terminal plate block 3 of the terminal plates 31a and 31b and the ground member 40.
6a, 36b, 44 and terminal plate blocks 36a, 36
a pair of locking springs 60 are provided for b and 44,
A pair of lock springs 60 and a release button 65 are provided one by one. Each pair of locking springs 60 includes abutting pieces 38, 44c of the terminal block blocks 36a, 36b, 44.
The central piece 61 is brought into contact with the terminal piece blocks 36a, 36b, 44 and the locking piece 6 is attached to the terminal pieces 37, 44a.
2 and the contact piece 63 facing each other, the terminal storage chamber 12a
~ 12c. At this time, the pair of locking springs 60
The locking pieces 62 of the two are opposed to each other, and the pair of locking springs 6
The release button 65 is arranged between 0. The release button 65 is shown in FIG.
As shown in FIGS. 6 (a) to 6 (d), it is formed of a synthetic resin in a substantially cross shape, and pressing protrusions 66, 66 for pressing the locking piece 62 are provided on both left and right side surfaces. Then, the release button 65 causes the pressing protrusions 66 to engage the locking pieces 62 of the locking spring 60.
And is housed inside the terminal housing chambers 12a to 12c in a state in which the lower end portion thereof projects outward from the through hole 16.

When assembling the outlet B using the terminal device A, first, with the release button 65 and the pair of locking springs 60 incorporated in the terminal accommodating chambers 12a to 12c,
The blade receiving portions 32, 32 are blade receiving spring storage chambers 13a, 13c.
And the terminal board block 36a is arranged in the terminal storage chamber 12a.
After storing the inside of the body 10, the blade receiving portions 32, 32 are arranged in the blade receiving spring storage chambers 13b, 13d, and the terminal plate block 36b is arranged in the terminal storage chamber 12b. The plate 31b is housed inside the body 10. Next, the blade receiving members 45, 45
a and 14b, and the terminal block block 4
The grounding member 40 is housed inside the body 10 such that 4 is arranged in the terminal housing chamber 12c. Then, by assembling the cover 20 from the front side of the body 10, the assembly of the outlet B is completed. At this time, each terminal board 31
The blade receiving portions 32 of a and 31b are arranged so as to face the insertion opening 51 of the cover 20, and the blade receiving member 45 of the grounding member 40 is arranged so as to face the insertion opening 52 of the cover 20. Also,
The contact pieces 41 and 48 of the ground member 40 are provided in the recess 2 of the cover 20.
The slits 25, 25 provided in the projection 4 project into the recess 24.

Here, when connecting the electric wire to the terminal device A, when the core wire whose electric wire is stripped is inserted from the electric wire insertion port 15 provided on the bottom surface of the terminal accommodating chambers 12a to 12c,
The locking piece 62 and the contact piece 63 of the locking spring 60 and the terminal piece 3
An electric wire is inserted between the locking piece 62 and the contact piece 63, and the tip of the locking piece 62 bites into the core wire to prevent it from coming off.
A core wire is sandwiched between and the terminal pieces 37, 44a so that the electric wire and the terminal plate blocks 36a, 36b, 44 are electrically connected. Therefore, the wire insertion port 15
The core wire is held and electrical connection is made to the terminal block blocks 36a, 36b, and 44 only by inserting the core wire from.

On the other hand, when disconnecting the electric wire connected to the terminal device A, hold the body 1 with the back of the body 10 facing upward with one hand, and use a tool such as a flat-blade screwdriver with the other hand. The flat tip surface of the tool is inserted into the recess 17 so as to be along the inclined surface 17a provided on the back surface of the body 10, and the tip surface of the tool hits the tip portion of the release button 65 protruding outward from the through hole 16. Contact. Next, when pressing the release button 65 with the thumb of the hand holding the body 1 and pushing the release button 65, the release button 65 is pushed up almost directly in FIG. The locking piece 62 is the terminal piece 3
Since it can be bent away from 7,44a, the locking piece 6
2 is separated from the core of the electric wire, and the electric wire can be easily pulled out with the other hand. Each terminal device A has a lock spring 6
Two lock springs 60 are provided, for example, two lock springs 60
The electric wire from the power supply side is connected to one of the two, and the electric wire for feeding is connected to the other.

As described above, the pair of locking springs 60 of each terminal device A are arranged inside the terminal accommodating chambers 12a to 12c with the locking pieces 62 facing each other, and when the electric wire is inserted. Since the pair of locking springs 60 are arranged so that the locking pieces 62 bend substantially in the same straight line (that is, since the pair of locking springs 60 bend in the same plane), Compared to the case where a pair of locking springs 60 are arranged side by side in the direction substantially orthogonal to the bending direction of the locking piece 62 as in the conventional terminal device, the length of the terminal device A is longer but the thickness is thinner. Therefore, the terminal device A can be thinned.

By the way, the plate portion 20a of the cover 20
A decorative plate 100 that covers the front surface of the plate portion 20a and that has a good appearance is detachably attached to the front surface side of the. Decorative plate locking holes 27 for locking the locking projections 105 protruding from the rear surface of the decorative plate 100 are provided at the four corners of the plate portion 20a. The decorative plate 100 can be detachably attached so as to cover the front surface of the plate portion 20a by inserting and locking.

The decorative plate 100 is made of an insulating synthetic resin and is shown in FIG.
As shown in (c), a substantially box in which a rectangular main portion 101 that covers the front surface of the plate portion 20a and a side wall 102 that projects rearward from the peripheral edge of the main portion 101 over the entire circumference are integrally formed. Formed into a shape. An opening window 103 that exposes the protruding portion 21 of the plate portion 20a is provided at the center of the main portion 101, and locking projections 105 are provided at four corners on the rear surface side of the main portion 101.

Then, by inserting and locking the locking projection 105 into the decorative plate locking hole 27 of the plate portion 20a, the decorative plate 1 is formed so as to cover the front surface of the plate portion 20a.
00 can be detachably attached. Then, in the state where the decorative plate 100 is attached to the plate portion 20a, the protruding portion 21 of the plate portion 20a is exposed to the front side from the opening window 103 provided in the decorative plate 100.

The side wall 102 of the decorative plate 100 is provided with a pair of notches 104, and the notches 104 are provided.
When a jig (such as the tip of a flat-blade screwdriver) is inserted into the plate and a force is applied to separate the decorative plate 100 from the plate portion 20a, the locking projection 10 of the decorative plate 100
5 and the decorative plate locking hole 27 of the plate portion 20a are released, and the decorative plate 100 is moved to the plate portion 2
It can be removed from 0a. Also, the plate portion 20
From the peripheral edge of a, a thin claw piece 26 whose tip fits in the notch 104 is projected, and a jig inserted in the notch 104 abuts the front surface of the claw piece 26, so that the decorative plate 10
It is possible to prevent the construction surface from being scratched by the jig when the 0 is removed from the plate portion 20a.

(Second Embodiment) FIG. 1 shows a second embodiment of the present invention.
This will be described with reference to FIGS. The body 1 accommodating the terminal device according to the present embodiment includes a synthetic resin body 10 and a cover 2.
It is composed of 0 and.

The body 10 is in the shape of a horizontally long box having an open front surface, and wire insertion ports 15 are open at both ends in the longitudinal direction of the bottom surface. At the opening edge of one side wall along the longitudinal direction of the body 10, a notch 10 is formed at a substantially central portion in the longitudinal direction.
a is formed, and a protruding piece 10b protruding forward is provided from the bottom of the notch 10a.

The terminal device A is formed in a U shape by bending both ends of a strip plate made of a conductive material, and a terminal plate 70 housed in the body 10 along the inner side surface of the body 10. A holding portion 71b for holding an electric wire with the central piece 70a of the terminal plate 70 is formed at a tip portion (one end portion in the swinging direction) of the long side of the substantially L-shaped shaft portion 71a, and a tip portion of the short side. Adjacent to each other, and the holding portion 71b is made to face both ends of the central piece 70a so that the terminal plate 7
Presser pieces 71, 71 that are swingably attached to 0 and the presser pieces 71 that support the presser pieces 71 in a swingable manner.
A pair of leaf springs 72 (urging means) for urging the holding portion 71b side (one end side in the swinging direction) toward the central piece 70a, and the tip ends of the short sides of the shaft portions 71a, respectively. , A release button 73 that moves each holding portion 71b in a direction away from the central piece 70a by pressing the tip (the other end in the swinging direction) of the short side of each shaft portion 71a toward the central piece 70a. To be done.

The release button 73 is made of synthetic resin and is shown in FIG.
As shown in FIG.
Are formed with recesses 73a, 73a into which the tips of the short sides of the recesses enter. In addition, a recess 73b into which the protruding piece 10b of the body 10 is inserted is formed on the surface of the release button 73. When the terminal device A is housed in the body 10, the recess 73b of the release button 73 protrudes from the body 10. The release button 73 is prevented from coming off by coming into contact with the piece 10b.

Here, the electric wire insertion port 15 provided on the bottom surface of the body 10 has a holding portion 71b of each pressing piece 71 and a terminal plate 70.
Since the holding part 71b is normally urged toward the center piece 70a side of the terminal plate 70 by the spring force of the leaf spring 72, the wire is inserted at the holding part 71b. The mouth 15 is closed.

When connecting an electric wire to the terminal device A, the release button 73 is pushed to move the holding portion 71b to the terminal plate 70.
In the state of moving it away from the central piece 70a of
When the core wire 111 from which the electric wire is stripped is inserted from the electric wire insertion port 15 and the force pressing the release button 72 is eliminated, the leaf spring 7
The holding portion 71b moves toward the central piece 70a of the terminal plate 70 by the spring force of 2, and the holding portion 71b and the terminal plate 7 are moved.
The core wire 111 of the electric wire is held between the central piece 70a of 0 (see FIG. 20). Here, the central piece 70a of the terminal board 70
A plurality of saw teeth 71c are formed along the electric wire insertion direction at a portion of the sandwiching portion 71b facing the plurality of saw teeth 71b.
By the contact of c with the core wire 111 of the electric wire, the frictional force generated between the holding portion 71b and the core wire 111 of the electric wire is increased, and the holding force of the electric wire can be increased.

On the other hand, when detaching the electric wire from the terminal device A, when the release button 72 is pushed in, the other end of the short side of the shaft portion 71a of each holding piece 71 is the central piece 70 of the terminal plate 70.
Since the holding piece 71b swings in the direction in which the holding portion 71b moves away from the central piece 70a and the electric wire is disconnected, the core wire 111 of the electric wire can be easily removed. it can.

(Embodiment 3) FIG. 2 shows Embodiment 3 of the present invention.
This will be described with reference to FIGS. The body 10 for accommodating the terminal device A of the present embodiment is made of synthetic resin, is formed in a horizontally long box shape with an open front surface, and has wire insertion openings 15 at both ends in the longitudinal direction on the bottom surface. .

The terminal device A is formed in a U shape by bending both ends of a strip plate made of a conductive material, and is accommodated in the body 10 along the inner side surface of the body 10. And both side pieces 80a, 80 of the terminal board 80
pressing pieces 81, 81 which are arranged to face a and sandwich the core wire 111 of the electric wire 110 between both side pieces 80a, 80a.
A pair of coil springs 82 (biasing means) each having one end inserted into a holding hole 81c formed in each pressing piece 81 and biasing each pressing piece 81 toward the side piece 80a.
The other end of each coil spring 82 is brought into contact with the body 10
It is composed of a pair of support plates 83 movably arranged inside, and a rotary button 84 (release member) arranged between the support plates 83, 83 and rotatably attached to the body 10. The coil springs 82, 82 are arranged such that the pressing buttons 81, 81 are biased in opposite directions with the rotary button 84 and the support plates 83, 83 in between.

Here, the pressing piece 81 has a substantially rectangular parallelepiped shape, and as shown in FIG. 25B, the side piece 80 of the terminal plate 80.
A plurality of saw teeth 81b are formed on the surface facing a, and a taper surface 81a that is inclined toward the side piece 80a of the terminal plate 80 in the insertion direction of the electric wire 110 is formed on the surface facing the bottom surface of the body 10. ing.

The rotary button 84 is shown in FIGS. 26 (a) and 26 (b).
As shown in FIG. 5, the cylindrical main body 84a and the front surface are substantially rectangular, and the longitudinal dimension is larger than the outer diameter of the main body 84a. The main body 84a is formed to have a size smaller than the outer diameter.
Of the pressing portion 84b projecting on the front side of the main body and a small-diameter operating section 84c continuously projecting on the rear side of the main body 84a, and the rear end surface of the operating section 84c has a tool such as a flat-blade screwdriver. A concave groove 84d into which the tip of is inserted is formed. The rotary button 84 is rotatably mounted in the body 10 with the operation portion 84c facing the through hole 16 'formed in the bottom surface of the body 10.

Here, as shown in FIGS. 23A and 26A, the longitudinal direction of the pressing portion 84b is the coil spring 82.
In the state in which the rotary button 84 is rotated so as to be substantially orthogonal to the bending direction of, the pressing portion 84b is not in contact with the support plates 83, 83, and therefore the initial bending of the coil spring 82 is small.

At this time, when the core wire 111 with the coating of the electric wire 110 stripped is inserted from the electric wire insertion port 15 provided on the bottom surface of the body 10, the core wire 111 presses the tapered surface 81a provided on the pressing piece 81, The pressing piece 81 moves in the direction away from the side piece 80a against the spring force of the coil spring 82, and the core wire 111 of the electric wire 110 is inserted between the side piece 80a and the pressing piece 81 (FIG. 23 (b)). reference).

From this state, FIG. 23 (c) and FIG.
When the rotary button 84 is rotated 90 degrees counterclockwise as shown in (c), both ends of the pressing portion 84b in the longitudinal direction are supported by the support plate 83.
Is pressed to move the support plate 83 to the pressing piece 81 side, the amount of bending of the coil spring 82 increases, and the electric wire 11
The force for holding the core wire 111 of 0 increases, and the core wire 111 is prevented from coming off.

Here, a plurality of saw teeth 81b are formed on the surface of the pressing piece 81 facing the side piece 80a of the terminal plate 80 along the wire insertion direction (see FIG. 25 (b)). By the contact of 81b with the core wire 111 of the electric wire 110, the frictional force generated between the pressing piece 81 and the core wire 111 of the electric wire 110 increases, and the holding force of the electric wire can be increased. Further, a regulation rib 10c for regulating the rotation range of the rotary button 84 is provided on the bottom surface of the body 10 so as to project.
When the rotary button 84 is rotated to a position where the core wire 111 of 0 is held, the pressing portion 84b of the rotary button 84 comes into contact with the regulation rib 10c and is prevented from further rotation. still,
As shown in FIG. 25 (a), a notch 83a is provided in the lower portion of the support plate 83 so as not to interfere with the restriction rib 10c. Further, in the support plate 83, a relief portion 83b into which the main body 84a of the rotary button 84 is inserted is formed below the surface facing the rotary button 84.

On the other hand, when the electric wire is removed from the terminal device, if the rotary button 84 is rotated clockwise by 90 degrees from the state of FIG. 23C, the longitudinal direction of the pressing portion 84b becomes the bending direction of the coil spring 82. The core 84 of the electric wire 110 is easily pulled out because the pressing portion 84b does not come into contact with the support plate 83, the initial deflection of the coil spring 82 becomes small, and the force for holding the electric wire becomes small, after moving to a substantially orthogonal position. be able to.

In this embodiment, the coil springs 82, 82
The rotary button 84 is disposed between the support plates 83 and 83 via the support plates 83, 83, and the rotary button 84 is rotatable between a position where the bending amount of the coil spring 82 is increased and a position where the bending amount is reduced. However, the releasing member is not limited to the above-mentioned one, and the position for releasing the connection state of the electric wire by reducing the bending amount of the coil springs 82, 82 and the coil spring 82,
Any structure may be used as long as the amount of bending of 82 is increased and the electric wire is movable between the positions for holding the electric wires.

[0055]

As described above, according to the first aspect of the present invention, a terminal plate, a pair of elastic members that are elastically held by the electric wire inserted between the terminal plate and the pair of elastic members, and a pair of elastic members are provided. And a release member for simultaneously bending the elastic members in the direction of releasing the connection state of the electric wires, and arranging the pair of elastic members side by side so that the pair of elastic members bends in the same plane when connecting the electric wires. Characteristically, since the pair of elastic members are arranged side by side so as to bend in the same plane when connecting the electric wires, the length dimension is longer than when the pair of elastic members are arranged in the direction orthogonal to the bending direction. However, there is an effect that the thickness dimension can be reduced and the terminal device can be reduced in thickness.

According to a second aspect of the invention, in the first aspect of the invention, each elastic member is inclined such that the tip approaches the terminal plate in the wire insertion direction, and the tip bites into the core wire of the inserted wire. It consists of a locking spring with a locking piece that clamps the electric wire between it and the terminal plate, and the pair of locking springs are arranged with the locking pieces facing each other, and the release member is the release operation. At the time, it has a pair of pressing projections for pressing the locking pieces of both locking springs, respectively, and is arranged between both locking springs so that each pressing projection faces each locking piece, The same effect as that of the first aspect of the invention is achieved.

According to a third aspect of the present invention, in the first aspect of the invention, each elastic member is swingably attached to the terminal plate and holds an electric wire between one end in the swing direction and the terminal plate. It consists of a presser piece and a biasing means for biasing one end of the presser piece in the swinging direction toward the terminal plate, and each presser piece is arranged in a line so that the other end in the swinging direction is adjacent. The release member urges the other end of each holding piece to move toward the terminal plate so that the one end of each holding piece moves away from the terminal plate when the releasing operation is performed. It is characterized by the fact that it is moved, and the same effect as the invention of claim 1 is achieved.

According to a fourth aspect of the present invention, in the first aspect of the present invention, each elastic member is arranged so as to face the terminal plate and clamps the wire between the elastic member and the terminal plate, and a direction in which the pressing piece approaches the terminal plate. And the urging means are arranged such that the directions of urging the pressing pieces are opposite to each other with the releasing member in between, and the releasing member is provided with the urging means. It is arranged so as to be movable between a position where it abuts and reduces the amount of bending of both biasing means to release the connection state of the electric wire, and a position where the amount of bending of both biasing means is increased to hold the electric wire. With this feature, the same effect as the invention of claim 1 is achieved.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of essential parts showing a state in which the terminal device of Embodiment 1 is incorporated in a body of an outlet.

2A and 2B show an outlet in which the above terminal device is incorporated, FIG. 2A is a front view, and FIG. 2B is a top view.

FIG. 3 shows a state in which the cover is removed, in which (a) is a front view and (b) is a side view.

FIG. 4 shows a body used in the above, (a) is a front view,
(B) is a right side view, (c) is a sectional view seen from the left side,
(D) is a bottom view.

FIG. 5 is a rear view of the body used in the above.

FIG. 6 is a cross-sectional view seen from the lower side of the body used in the above.

FIG. 7 shows a cover used in the above, (a) is a front view,
(B) is a right side view and (c) is a bottom view.

FIG. 8 is a cross-sectional view of the cover used above when viewed from the right side.

FIG. 9 is a rear view of the cover used in the above.

FIG. 10 shows a decorative plate used for the same as above, (a) is a top view, (b) is a cross-sectional view seen from above, and (c) is a rear view.

FIG. 11 shows a terminal board used in the above, (a) is a front view and (b) is a bottom view.

FIG. 12 shows another terminal board used in the above, wherein (a) is a front view and (b) is a bottom view.

13A and 13B show a blade receiving spring used in the above, wherein FIG. 13A is a front view and FIG. 13B is a bottom view.

FIG. 14 shows a grounding member used in the same as above, (a) is a front view, (b) is a bottom view, and (c) is a side view.

FIG. 15 shows a blade receiving member used for the same as above, (a) is a front view, (b) is a left side view, (c) is a right side view, and (d) is a top view.

FIG. 16 shows a release button used in the same as above, (a) is a front view, (b) is a bottom view, (c) is a top view, and (d) is a right side view.

17A and 17B show a state in which the terminal device according to the second embodiment is incorporated in a body, FIG. 17A is an explanatory diagram showing a state where a release button is not pressed, and FIG. 17B is an explanatory diagram showing a state where the release button is pressed. .

FIG. 18 is an enlarged perspective view of an essential part of the above.

FIG. 19 is a perspective view of a release button used in the above.

FIG. 20 is an explanatory diagram of the electric wire connection state of the above.

FIG. 21 is a perspective view showing a state in which the above terminal device is incorporated in a body.

22 (a) and (b) are external perspective views showing a state in which the same is incorporated in a body.

23 (a) to 23 (c) are explanatory views showing a state in which the terminal device of Embodiment 3 is incorporated in a body.

FIG. 24 is an explanatory diagram of the electric wire connection state of the above.

FIG. 25 (a) is a perspective view of a holding plate used in the same as above;
(B) is a perspective view of a terminal piece used in the above.

26 (a) to (c) are perspective views of relevant parts of the same.

FIG. 27 is a perspective view of the state where the same is incorporated into a body as seen from the back surface side.

FIG. 28 is a front view showing a state in which a conventional terminal device is incorporated in a body of a wiring device.

FIG. 29 is a cross-sectional view of relevant parts of the same.

FIG. 30 is a perspective view of an essential part of the above.

[Explanation of symbols]

A terminal device 36a terminal block 37 terminal strip 38 Contact piece 60 locking spring 61 central piece 62 lock pieces 63 contact piece 65 release button 66 Press protrusion

Claims (4)

[Claims] 1. A terminal plate, a pair of elastic members for elastically holding each of the electric wires by being bent by an electric wire inserted between the terminal plate and the terminal plate, and disconnecting the electric wires from the pair of elastic members. And a release member for simultaneously bending in a direction in which the pair of elastic members are arranged so that the pair of elastic members bend in the same plane when connecting the electric wire. 2. The elastic members are inclined such that the tip ends approach the terminal plate in the insertion direction of the electric wire, and the tip bites into the core wire of the inserted electric wire to hold the electric wire between the elastic member and the terminal plate. It consists of a locking spring with a locking piece, a pair of locking springs are arranged with the locking pieces facing each other, the release member, the locking pieces of both locking springs during the release operation. 2. The terminal device according to claim 1, further comprising a pair of pressing projections for pressing the pressing projections, the pressing projections being arranged between the locking springs so that the pressing projections face the locking pieces. 3. Each of the elastic members is swingably attached to the terminal plate and holds a wire between one end in the swing direction of the elastic member and the terminal plate, and a swinging motion of the pressing piece. And a biasing means for biasing one end in the moving direction toward the terminal plate, and the pressing pieces are arranged in a line so that the other end in the swinging direction is adjacent to each other. The release member presses the other end of each pressing piece toward the terminal plate during the release operation,
In the direction in which one end of each pressing piece is separated from the terminal plate,
The terminal device according to claim 1, wherein each of the pressing pieces is swung. 4. Each of the elastic members is a pressing piece that is arranged so as to face the terminal plate and holds an electric wire between the elastic plate and the terminal plate, and a biasing means that biases the pressing piece toward the terminal plate. And both urging means are arranged such that the pressing members are urged in the opposite directions with the releasing member in between. A position for releasing the connection state of the electric wire by reducing the amount of bending of the biasing means,
2. A flexure amount of both urging means is increased so as to be movable between a position for holding the electric wire and the urging means.
The terminal device described.