JPH10177869A - Quickly connected terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a distance between an unlatching member and a locking spring so as to make a device compact by housing the unlatching member in a case so as to be freely moved along the side face of the locking spring and in the interposing direction of an electric wire conductor between an unlatching position for deflecting the locking spring and a returning position for returning the same. SOLUTION: A quickly connected terminal unit comprises an electric wire conductor contact plate 14 as a terminal plate contacted with a part of the peripheral surface of an inserted electric wire conductor 33, a locking spring 13 for locking the electric wire conductor 33 so as to press this to the contact plate 14 and an unlatching member 15 for unlocking the electric wire conductor 33 by deflecting the locking spring. By disposing the unlatching member 15 along the side face of the locking spring 13, a distance therebetween is shortened and the unlatching member 15 is housed in a case 12 so as to be freely moved in the interposing direction of the electric wire conductor 33 and thus the device is made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick-connecting terminal device suitable for a wiring device or a breaker for connecting an electric wire conductor without using screws by using a locking spring.

[0002]

2. Description of the Related Art For example, Japanese Unexamined Patent Publication No. Hei 5-343111 discloses that an unlocking member for unlocking a locking spring is disposed above the locking spring so that a terminal plate is sandwiched between the locking spring and the locking member. A first conventional example in which the direction is parallel to the electric wire insertion hole, a second conventional example in which the unlocking member is rotatably provided in the case, and a third conventional example in which the moving direction of the unlocking member is orthogonal to the electric wire insertion hole. Is disclosed.

[0003]

However, in the first conventional example, the unlocking member is disposed above the locking spring so as to sandwich the terminal plate between the locking spring and the locking member. Since there is a space between the lock member and the locking spring, and the unlocking member moves outward from the case, if the unlocking member is thinned, the unlocking member may be broken and cannot be thinned, Compact cannot be achieved.

In the second conventional example, since the unlocking member is a rotating body, the unlocking member cannot be made thin, so that the size cannot be reduced. In the third conventional example, the moving direction of the unlocking member is orthogonal to the electric wire insertion hole, so that compactness cannot be achieved. Therefore, an object of the present invention is to provide a quick connection terminal device that can be made compact.

[0005]

According to a first aspect of the present invention, there is provided a quick-connecting terminal device having a case having a wire insertion hole and a storage portion communicating therewith, and a case disposed in the storage portion and inserted through the wire insertion hole. A terminal plate with which a part of the peripheral surface of the electric wire conductor contacts, a locking spring for locking the electric wire conductor inserted through the electric wire insertion hole against the terminal plate, and bending the locking spring. An unlocking member housed in the case so as to be movable in an insertion direction of the wire conductor along a side surface of the locking spring between an unlocking position and a return position for returning the locking spring. is there.

According to the quick-connecting terminal device of the first aspect, since the unlocking member is disposed along the side surface of the locking spring, the distance between the unlocking member and the locking spring can be shortened, and the unlocking member can be further released. Since the lock member is housed in the case so as to be movable in the insertion direction of the electric wire conductor, the case can serve as a guide for moving the unlock member, and therefore, the thickness of the unlock member can be reduced.
Therefore, the overall size can be reduced.

According to a second aspect of the present invention, in the first aspect, the case surrounds the wire insertion hole with a partition, and a part of the partition is opened. According to the quick-connecting terminal device of the second aspect, in addition to the effect of the first aspect, after the wire conductor is inserted into the wire insertion hole and locked by the locking spring, the wire conductor can be bent to an open portion without a partition wall. Therefore, the storability of the electric wire conductor can be improved.

According to a third aspect of the present invention, in the quick connection terminal device according to the second aspect, the case houses the unlocking member in the partition. According to the quick connection terminal device of the third aspect, in addition to the effect of the second aspect, the size can be reduced. According to a fourth aspect of the present invention, there is provided a quick-connecting terminal device according to the first, second or third aspect, wherein the unlocking member is connected to a pivot point movably supported by the case, and to the pivot point. The pressed portion provided and pressed in the direction to unlock the wire conductor, and the wire conductor inserted in the locking spring connected to the pivot point portion on the opposite side to the pressed portion. A contact portion that is pressed by the tip to rotate the unlocking member; and a pressing portion that presses the locking spring by pressing the pressed portion, wherein the pressed portion of the unlocking member is provided in the case. Is formed with an operation hole for pressing.

According to the quick-connecting terminal device of the fourth aspect, in addition to the effects of the first, second or third aspect, the wire conductor inserted through the wire insertion hole is brought into contact with the unlocking member at the distal end side. When the unlocking member rotates around the pivot point in the case when it comes into contact with the portion, the connection completion state of the wire conductor can be confirmed when viewed from the upper surface side of the case by the rotation of the unlocking member. Further, if the pressed portion is pressed from the operation hole as it is, the locking spring bends by the pressing portion and the wire conductor can be pulled out, so that the wire conductor can be easily unlocked.

According to a fifth aspect of the present invention, there is provided a quick-connecting terminal device according to the fourth aspect, wherein in one of the connection completed state and the connection incomplete state of the wire conductor, a part of the pressed portion faces and the connection of the wire conductor is completed. In the other of the state and the connection incomplete state, a display hole in which a part of the pressed portion does not reach is formed in the case. According to the quick connection terminal device of claim 5,
In addition to the effect of the fourth aspect, it is easy to confirm the connection completed state or the connection uncompleted state of the electric wire conductor.

According to a sixth aspect of the present invention, in the quick connection terminal device according to the fourth or fifth aspect, the unlocking member has a spring contact portion and urges the unlocking member in a direction approaching the operation hole. Thus, a return spring for pressing the spring contact portion is provided. According to the quick connection terminal device of claim 6, claim 4 is provided.
Alternatively, in addition to the effect of the fifth aspect, after the wire conductor is inserted from the wire insertion hole, the tip side surface of the wire conductor contacts the contact portion of the unlocking member, and after the unlocking member rotates, the unlocking member is operated. Since it can be moved in the direction approaching the hole, the connection completion state of the wire conductor can be known.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, the quick connection terminal device is attached to an electric device 4 having a terminal screw 1 and having a terminal plate 3 having a receiving hole 2 for receiving the terminal screw 1. In the embodiment, the electric device 4 is a circuit breaker, and an input-side screw-type terminal device 5 is provided at one end, and an output-side screw-type terminal device 6 is provided at the other end. The terminal plates 2 of the terminal devices 5 and 6 of the electric device 4 are
0 and both side walls 21 and 22. The receiving hole 2 of the terminal plate 3 is a through hole, and a nut (not shown) for screwing the terminal screw 1 is provided on the back surface side.
The receiving hole 2 may be formed as a screw hole. Reference numeral 7 denotes a mounting surface for mounting on a wall surface, and 8 denotes a mounting recess.

The quick connection terminal device has a terminal connection portion 10, a quick connection terminal portion 23, and a case 12. Terminal connection part 10
Has a screw insertion hole 11 that is superposed on the terminal plate 3 and is aligned with the receiving hole 2, and is attached to the terminal plate 3 through the screw insertion hole 11 by the terminal screw 1. In the embodiment, the terminal connection portion 10 is formed of a conductive plate having a width substantially equal to that of the terminal plate 3, the terminal screw 1 is passed through the screw insertion hole 11 and the receiving hole 2, and the terminal connection portion 10 is screwed to the nut. Tighten and fix.

The quick connection terminal portion 23 is electrically and mechanically connected to the terminal connection portion 10 to connect the electric wire conductor 33 in a direction substantially perpendicular to the mounting surface 7 from a side opposite to the mounting surface 7 of the electric device 4. It has a locking spring 13 to be inserted. To elaborate,
The quick-connecting terminal portion 23 includes a wire conductor contact plate 14, which is a terminal plate that contacts a part of the peripheral surface of the inserted wire conductor 33, and a wire conductor 33 that is pressed against the wire conductor contact plate 14.
And an unlocking member 15 for bending the locking spring 13 to unlock the electric wire conductor 33. The wire conductor contact plate 14 is, as shown in FIG.
a, 14c and an intermediate piece 14b, and is formed in a U-shaped cross section.
It is integrally formed so as to form a character. Wire conductor contact plate 1
A positioning projection 40 is formed by cutting and raising substantially at the center of the intermediate piece 14b. The lock spring 13 is formed by folding one end of a leaf spring to form a lock piece 13a and bending the other end into a Z-shape to form a contact piece 13b. As shown in FIG. 6, the bent portion of the contact piece 13b is engaged with the positioning projection 40 to be held between the end piece 14c of the wire conductor contact plate 14 and the wire conductor 33 is in contact with the locking piece 13a. It is to be inserted between the piece 13b and the end piece 14a. FIG. 1 shows a state in which the wire conductor 33 is inserted, and the locking piece 13a and the contact piece 13b are bent to press the wire conductor 33 against the end piece 14a of the wire conductor contact piece 14, and the tip of the locking piece 13a becomes the wire conductor 33. The wire conductor 33 resiliently contacts the contact piece 13b to be electrically connected.

The unlocking member 15 is connected between an unlocking position where the locking spring 13 is bent (the state shown in FIG. 2) and a return position where the locking spring 13 is returned (the state shown in FIGS. 1 and 5). It is housed in the case 12 so as to be movable in the insertion direction of the wire conductor 33 along the side surface of the lock spring 13. The unlocking member 15 according to the embodiment has an elongated plate shape, and has a pivot point 47 movably supported by the case 12 and a direction in which the wire conductor 33 is unlocked by being connected to the pivot point 47. The unlocked member 15 is pressed by the pressed portion 18 to be pressed and the distal end of the wire conductor 33 that is connected to the pivot point portion 47 on the opposite side to the pressed portion 18 and inserted into the locking spring 13. The rotating contact portion 17 and the pressed portion 1
8 and a pressing portion 16 for pressing the locking spring 13. The pressing portion 16 and the pivot point portion 47 project in opposite directions at the same position, the pressed portion 18 is formed in a T-shape, the contact portion 17 and the spring contact portion are integrally formed, and the contact portion 17 is pivoted. It is inclined in the direction of rotation with respect to the fulcrum part 47, and slides by the distal end of the wire conductor 33 abutting in the radial direction of the pivot fulcrum part 47 of the unlocking member 15 to slide the unlocking member 1
5 is rotated. As shown in FIG. 5, the pressing portion 16 is located above the lock piece 13a,
As shown in FIG. 2, the locking piece 13a is deflected and acts so as to be separated from the bite of the wire conductor 33 at the tip, so that the wire conductor 33 can be pulled out. Reference numeral 19 denotes a plate-shaped return spring for returning the unlocking member 15, and
The spring contact portion integrated with the contact portion 17 is pressed so as to urge the 5 toward the operation hole 12 and is returned as shown in FIG.

The case 12 has an accommodating portion 25 for accommodating the quick connection terminal portion 23, and an electric wire insertion hole 26 for inserting the electric wire conductor 33 into the quick connection terminal portion 23 is formed in the accommodating portion 25. In the case 12 according to the embodiment, the housing 25 is located closer to the mounting surface 7 than the terminal plate 3 on the end face 4 a of the electric device 4 in a state where the terminal connection portion 10 is attached to the terminal plate 3, and It is formed in a substantially L-shape so that the outer surface of the wall 34 of the storage section 25 comes into contact with the end face 4a of the electric device 4 when the electric wire conductor 12 is inserted into the connection terminal section 23. Side walls 35 and 36 that surround and abut both side walls 21 and 22 of the electric device 4 are formed to extend from the storage unit 25 in an L-shape. The end piece 14 a of the wire conductor contact plate 14 is in contact with the inner surface of the wall 34 that is in contact with the end surface 4 a of the electric device 4 of the case 12.

An upper wall 37 connecting the side walls 35 and 36 is formed, and a tool insertion hole 38 for tightening and loosening the terminal screw 1 is formed in the upper wall 37. Further, as shown in FIG. 4, the case 12 is divided vertically,
2a and 12b are connected by a connecting member 47. In addition, the case 12 surrounds the electric device 4 side of the electric wire insertion hole 26 and three sides on both sides thereof with a partition wall 27, and forms an opening 27a on the opposite side of the electric wire insertion hole 26 from the electric device 4 side.

An unlocking storage portion 45 for storing the unlocking member 15 movably in the insertion direction of the electric wire conductor 33 is formed in a part of the partition wall 27, and the pressed portion 18 of the unlocking member 15 is formed in the partition wall 27. An operation hole 28 for pressing is formed.
The lower end of the unlocking storage portion 45 communicates with the storage portion 25, and an L-shaped groove 46 is formed on the inner surface of the storage portion 25, and the pivot point 47 slides along the groove 46. The pressed portion 18 of the unlocking member is stored in the unlocking storage portion 45, and the pivoting support portion 47 is located in the vertically extending portion of the groove 46, so that the unlocking member 15 can move freely in the wire insertion direction. Be placed. Further, the spring 19 has a bent portion 19a at one end fitted into a concave portion 25a formed on a wall on the upper end side of the storage portion 25, and the tip of the inclined portion 19b at the other end is abutting portion (spring contact portion).
17 and supports the unlocking member 15 as shown in FIG.

Reference numeral 18a denotes an unconnected display portion formed in a part of the pressed portion 18, and reference numeral 28a denotes a display hole formed adjacent to the tool insertion hole 28. When the wire conductor 33 is inserted as shown in FIG. 1, it is locked by the locking spring 13 and at the same time, the inclined surface of the contact portion 17 is pushed by the tip of the wire conductor 33 so that the contact portion 17 is connected to the wire conductor 33. The pressed portion 18 is slid and rotated about the shaft portion 47 so that the unconnected display portion 18a of the pressed portion 18 is
Hide from a. Therefore, when the electric wire conductor 33 is not connected, the unconnected display portion 18a of the pressed portion 18 faces the display hole 28a, and when the electric wire conductor 33 is connected, the unconnected state display portion of the pressed portion 18 is provided. 18a does not reach the display hole 28a.

Further, the ends of the side walls 35 and 36 are
The dimensional relationship is set such that the screw insertion hole 11 of the terminal connection part 10 is aligned with the receiving hole 2 of the terminal plate 3 in a state of contact with the back wall 20 of the terminal board 3. According to this embodiment, the unlocking member 1
5 is arranged along the side of the locking spring 13,
Since the distance between the unlocking member 15 and the locking spring 13 can be shortened, and the unlocking member 15 is movably accommodated in the case 12 in the insertion direction of the electric wire conductor 33, the case 12 Can act as a moving guide,
Therefore, the thickness of the unlocking member 15 can be reduced, and the overall size can be reduced.

After the electric wire conductor 33 is inserted into the electric wire insertion hole 26 and locked by the locking spring 13, the electric wire conductor 33 can be bent to an open portion where there is no partition wall 27, so that the storability of the electric wire conductor 33 can be improved. it can. The case 12 is a partition 2
Since the unlocking member 13 is housed in 7, the size can be reduced.

The electric wire conductor 3 inserted through the electric wire insertion hole 26
When the distal end 3 contacts the contact portion 17 of the unlocking member 15, the unlocking member 15 rotates within the case 12 about the pivot point 47. When viewed from the upper surface side, the connection completion state of the wire conductor 33 can be confirmed. Further, if the pressed portion 18 is pressed from the operation hole 28 as it is, the locking spring 13 is bent by the pressing portion 16 and the wire conductor 33 can be pulled out, so that the unlocking operation of the wire conductor 33 becomes easy.

When the connection of the wire conductor 33 is not completed, the unconnected display portion 18a, which is a part of the pressed portion 18, faces, and when the connection of the wire conductor 33 is completed, the unconnected display of the pressed portion 18 is displayed. Since the display hole 28a in which the portion 18a does not reach is formed in the case 12, it is easy to confirm the connection completion state or the connection non-completion state of the wire conductor 33. Wire conductor 3
3 through the electric wire insertion hole 26, the front end side surface of the electric wire conductor 33 contacts the contact portion 17 of the unlocking member 15, and the unlocking member 1
After the rotation of 5, the unlocking member 15 can be moved in the direction approaching the operation hole 28, so that the connection completion state of the wire conductor 33 can be known.

When the electric wire conductor 33 is not yet connected, the unconnected display portion 18a of the pressed portion 18 is displayed in the display hole 28a.
When the connection of the wire conductor 33 is completed, the unconnected state display portion 18a of the pressed portion 18 does not reach the display hole 28a. When the connection of the electric wire conductor 33 is not completed, a part of the pressed portion 18 may not reach the display hole.

The return spring 19 does not have to use the spring force of the locking portion 13a of the locking spring 13.

[0026]

According to the first aspect of the present invention, since the unlocking member is provided along the side surface of the locking spring, the distance between the unlocking member and the locking spring can be shortened. Further, since the unlocking member is housed in the case movably in the insertion direction of the electric wire conductor, the case can serve as a guide for moving the unlocking member, so that the unlocking member can be made thinner. Therefore, the overall size can be reduced.

According to the quick-connecting terminal device of the second aspect, in addition to the effect of the first aspect, after the wire conductor is inserted into the wire insertion hole and locked by the locking spring, the wire conductor is bent to an open portion without a partition wall. Therefore, it is possible to improve the storability of the electric wire conductor. According to the quick connection terminal device of the third aspect, in addition to the effect of the second aspect, the size can be reduced.

According to the quick-connecting terminal device of the fourth aspect, in addition to the effects of the first, second or third aspect, the wire conductor inserted from the wire insertion hole is brought into contact with the unlocking member at the tip end side. When the unlocking member rotates around the pivot point in the case when it comes into contact with the portion, the connection completion state of the wire conductor can be confirmed when viewed from the upper surface side of the case by the rotation of the unlocking member. Further, if the pressed portion is pressed from the operation hole as it is, the locking spring bends by the pressing portion and the wire conductor can be pulled out, so that the wire conductor can be easily unlocked.

According to the quick connection terminal device of the fifth aspect, in addition to the effect of the fourth aspect, it is easy to confirm the connection completed state or the connection uncompleted state of the electric wire conductor. According to the quick connection terminal device of the sixth aspect, in addition to the effects of the fourth and fifth aspects, in addition to the effect of the fourth or fifth aspect, the wire conductor is inserted through the wire insertion hole so that the side surface at the tip end of the wire conductor contacts the contact portion of the unlocking member. After contacting and rotating the unlocking member,
Since the unlocking member can be moved in the direction approaching the operation hole, the connection completion state of the wire conductor can be known.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where an electric wire according to an embodiment of the present invention is inserted.

FIG. 2 is a sectional view showing a state where an unlocking member is pushed in.

FIG. 3 is a plan view thereof.

FIG. 4 is an exploded perspective view of the quick connection terminal device.

FIG. 5 is a cross-sectional view of a state before insertion of an electric wire.

FIG. 6 is a sectional view taken on the opposite side at the same sectional position as in FIG. 5;

FIG. 7 is an exploded perspective view before attachment to an electric device.

FIG. 8 is a partially cutaway front view showing a state where the quick connection terminal device is attached.

FIG. 9 is a plan view showing a state where the electric wire conductor is bent in parallel to a mounting surface of the electric device.

[Explanation of symbols]

 Reference Signs List 12 case 13 locking spring 14 wire conductor contact plate as terminal plate 15 unlocking member 16 pressing portion 17 abutment portion 18 pressed portion 25 storage portion 26 wire insertion hole 27 partition 27a open portion 28 operation hole 28a display hole 33 wire Conductor 45 Storage section for unlocking 47 Pivot point

Claims (6)

[Claims] A case having a wire insertion hole and a storage portion communicating therewith, and a terminal plate disposed in the storage portion and contacting a part of a peripheral surface of a wire conductor inserted through the wire insertion hole. A locking spring for locking the wire conductor inserted through the wire insertion hole against the terminal plate, and an unlocking position for bending the locking spring and a return position for returning the locking spring. A quick-lock terminal device comprising: an unlocking member housed in the case so as to be movable in a direction in which the electric wire conductor is inserted along a side surface of the locking spring. 2. The quick-connect terminal device according to claim 1, wherein the case surrounds the wire insertion hole with a partition and partially opens the partition. 3. The quick-connect terminal device according to claim 2, wherein the unlocking member is housed in the partition. 4. The unlocking member includes a pivot point movably supported by the case, and a pressed portion connected to the pivot point and pressed in a direction to unlock the electric wire conductor. An abutting portion which is connected to the pivot point portion on the opposite side to the pressed portion and is pushed by the tip of the electric wire conductor inserted into the locking spring and rotates the unlocking member; A pressing portion for pressing the locking spring by pressing the pressed portion, and an operation hole for pressing the pressed portion of the unlocking member is formed in the case. Item 3. The quick-connect terminal device according to Item 3. 5. A part of the pressed portion faces in one of the connection completed state and the connection uncompleted state of the wire conductor, and is pressed in the other of the connection completed state and the connection uncompleted state of the wire conductor. The quick-connect terminal device according to claim 4, wherein a display hole in which a part of the portion does not face is formed in the case. 6. The unlocking member has a spring contact portion, and a return spring that presses the spring contact portion so as to urge the unlocking member in a direction approaching the operation hole is provided. Or the quick connection terminal device according to claim 5.