JP3433631B2 - Quick connection terminal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick-connect terminal device which is attached to an electric device for connecting an electric wire conductor with a terminal screw so that the electric wire conductor can be easily connected without using the terminal screw. .

[0002]

2. Description of the Related Art Generally, a wire conductor is connected to an electric device by loosening a terminal screw screwed into a terminal plate of the electric device, sandwiching the wire conductor, and tightening the terminal screw. However, the terminal screw must be loosened or tightened, and there is a problem that the work of connecting the electric wire conductor is troublesome.

Therefore, in order to improve the workability of connecting the electric wire conductors, a quick-connect terminal device is used in which a locking spring is used in the terminal portion of an electric device and the connection can be made only by inserting the electric wire.

[0004]

The electric equipment provided with the quick-connect terminal device has to be redesigned from the beginning, and there is a problem that it cannot be applied to existing electric equipment. For this reason, there has been considered a quick-connect terminal device that can be easily attached to an electric device of a terminal screw type that has existed for a long time.

However, there is a drawback that the connecting work is not easy because the wire insertion direction is parallel to the mounting surface. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a quick-connect terminal device that can be easily attached to a screw tightening type electric device and that facilitates connection work of electric wire conductors.

[0006]

A quick-connect terminal device according to claim 1 is a quick-connect terminal device which is attached to an electric device having a terminal screw and a terminal plate having a receiving hole for receiving the terminal screw. And a terminal connecting portion which is overlapped with the terminal plate and has a screw insertion hole which is aligned with the receiving hole, and which is attached to the terminal plate through the screw insertion hole by the terminal screw, and the terminal connecting portion. And a quick-connect terminal portion having a locking spring that is electrically and mechanically connected to the electric device to insert a wire conductor from a side opposite to the mounting surface of the electric device in a direction substantially perpendicular to the mounting surface, and the quick-connect terminal. A housing portion for housing a terminal portion is provided, and the wire conductor is inserted into the quick-connect terminal portion from a side opposite to a mounting surface of the electric device in a direction substantially perpendicular to the mounting surface. the electric wire insertion hole and a case formed on the receiving portion, before Case, the conductive of the wire insertion holes
The electric equipment side and both sides are surrounded by a partition wall, and the electric wire insertion hole
The other side of the electric device is opened.

According to the quick-connect terminal device of the first aspect, by attaching the terminal connecting portion to the terminal plate, the terminals of the electric device can be simplified without improving the terminal screw of the electric device to the quick-connect terminal. It can have a quick-connect terminal structure. Further, since the wire conductor is inserted into the quick-connect terminal portion from the side opposite to the mounting surface of the electric device through the wire insertion hole substantially perpendicularly to the mounting surface, the work of connecting the wire conductor is facilitated. In addition, connect the wire conductor to the wire insertion hole.
After connecting to the quick-connect terminal through the
Since the wire conductor can be bent, it can be stored easily.
improves.

[0008]

According to a second aspect of the present invention, there is provided a quick-connect terminal device according to the first aspect , wherein the quick-connect terminal portion connects the wire conductor contact plate with which the wire conductor contacts, and the wire conductor so as to press the wire conductor contact plate. It has a locking spring for locking and an unlocking member for bending the locking spring to unlock the electric wire conductor, and the case is movable in the partition wall in the inserting direction of the electric wire conductor. In addition to forming an unlocking accommodating portion to be accommodated in the above, an operation hole for operating the unlocking member is formed in the partition wall.

According to the quick-connect terminal device of claim 2 ,
In addition to the effect of 1 , the unlocking member is housed in the partition wall so as to be movable in the insertion direction of the electric wire conductor, so that the case can be made compact. Quick connect terminal apparatus according to claim 3, in claim 2, wherein the case, the housing portion is positioned on said mounting surface than the terminal plate of the end face of the electrical device, the electrical wires to the speed forming terminal portions The housing is formed in a substantially L-shape so that the housing contacts the end surface of the electric device when the conductor is inserted.

According to the quick connect terminal apparatus according to claim 3, claim
In addition to the effect of 2 , the load at the time of inserting and connecting the electric wire conductor into the quick-connect terminal portion can be supported by the end surface of the electric device, so that the case can be prevented from being damaged. According to a fourth aspect of the present invention, in the fast connecting terminal device according to the third aspect , the terminal connecting portion and the electric wire conductor contact plate are integrally formed in a substantially L shape, and the electric wire conductor contact plate is the electric device of the case. It abuts on the inner surface of the wall that abuts the end surface.

According to the quick connection terminal device of claim 4 ,
In addition to the effect of 3 , the electric wire conductor contact plate is in contact with the inner surface of the wall of the case which is in contact with the end surface of the electric device. Therefore, the electric wire conductor contact plate is attached to the terminal plate with the terminal screw. Is hard to bend, and the electric wire conductor is not easily inserted due to the bending of the electric wire conductor contact plate. The quick-connect terminal device according to claim 5 is claim 1, claim 2, claim 3, or contract.
In Claim 4 , the terminal plate of the electric device is surrounded by the inner wall and both side walls, and the case has side walls that surround both sides of the terminal connecting portion and abut against the both side walls of the electric device. .

According to the quick connection terminal device of claim 5 , in addition to the effects of claim 1, claim 2, claim 3 or claim 4 ,
Since both sides of the terminal connection part are surrounded by side walls, and the outer surface of this side wall abuts both side walls of the electric device, it is possible to firmly fix the quick-connect terminal device to the electric device when connecting the terminal connection part to the terminal board. it can. According to a sixth aspect of the present invention, in the fast connecting terminal device according to the fifth aspect , the screw insertion hole of the terminal connecting portion is provided in the terminal plate in a state where an end portion of the side wall of the case is in contact with the inner wall of the electric device. It is aligned with the receiving hole.

According to the quick connecting terminal device of claim 6 ,
In addition to the effect of 5 , the side wall of the case is inserted between the both side walls of the electric device and the tip is brought into contact with the inner wall, so that the screw insertion hole of the terminal connection portion and the receiving hole of the terminal plate are aligned with each other. This facilitates the work of attaching the terminal part to the terminal plate. Claim 7
The quick-connect terminal device according to claim 5 or 6 ,
The case has an upper wall connecting the side walls, and a tool insertion hole for tightening and loosening the terminal screw is formed on the upper wall.

According to the quick connect terminal apparatus according to claim 7, claim
In addition to the effect of the fifth aspect or the sixth aspect , the strength of the side wall of the case can be improved by the upper wall.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. That is, this quick-connect terminal device is attached to an electric device 4 having a terminal screw 1 and 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 the input side screw tightening type terminal device 5 is provided at one end thereof, and the output side screw tightening type terminal device 6 is provided at the other end thereof. The terminal plate 2 of the terminal device 5, 6 of the electric device 4 is the back wall 2
It is surrounded by 0 and both side walls 21 and 22. Further, 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 rear surface side thereof.
The receiving hole 2 may be formed as a screw hole. Reference numeral 7 is a mounting surface for mounting on a wall surface, and 8 is a mounting recess.

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

The fast-connecting terminal portion 23 is electrically and mechanically connected to the terminal connecting portion 10, and the electric wire conductor 33 is connected in a direction substantially perpendicular to the mounting surface 7 from the side opposite to the mounting surface 7 of the electric device 4. It has a locking spring 13 for insertion. In the embodiment, the quick-connect terminal portion 23 is provided with the electric wire conductor contact plate 14 that comes into contact with the inserted electric wire conductor 33, and the locking spring 13 that locks the electric wire conductor 33 so as to press the electric wire conductor contact plate 14. ,
The unlocking member 15 is configured to bend the locking spring 13 to unlock the wire conductor 33. The wire conductor contact plate 14 is shown in FIG.
As shown in FIG. 3, the end pieces 14a, 14c and the intermediate piece 14b are formed in a U-shaped cross section, and are integrally formed with the terminal connecting portion 10 at one end of the end piece 14a so as to form a substantially L shape. A positioning protrusion 40 is formed by cutting and raising in the approximate center of the intermediate piece 14b of the wire conductor contact plate 14. For the locking spring 13, one end of the leaf spring is folded back to form a locking piece 13a,
The other end is bent into a Z shape to form a contact piece 13b, and the locking spring 13 is fitted inside the electric wire conductor contact plate 14 to form the contact piece 13b.
The bent portion of b is engaged with the positioning protrusion 40 as shown in FIG. 6 and held between the end piece 14c of the electric wire conductor contact plate 14, and the electric wire conductor 33 is connected to the locking piece 13a and the contact piece 13b. It is supposed to be inserted between the piece 14a. FIG. 7 shows a state in which the electric wire conductor 33 is inserted, the locking piece 13a and the contact piece 13b bend and the electric wire conductor 33 is pressed against the end piece 14a of the electric wire conductor contact piece 14, and the tip of the locking piece 13a is the electric wire conductor 33. Then, the wire conductor 33 is elastically contacted with the contact piece 13b to be electrically connected.

Further, the unlocking member 15 is an elongated plate-like member, and has an unlocking portion 16 and a shaft portion 47 projecting in opposite directions to each other at a central portion, a substantially T-shaped head 18 is provided at one end, and the other end is provided at the other end. The spring bearing portion 17 is provided so as to project, the spring bearing portion 17 is inclined in the direction of rotating with respect to the shaft portion 47, and the tip of the electric wire conductor 33 is brought into contact with the shaft portion 47 of the unlocking member 15 in the radial direction. The unlocking member 15 is rotated by sliding.
As shown in FIG. 5, the unlocking portion 16 is located above the locking piece 13a, and when the head 18 is pressed, the locking piece 13a is bent to the electric wire conductor 33 at the tip as shown in FIG. The electric wire conductor 33 can be pulled out by working away from the bite. Reference numeral 19 is a plate-shaped spring for returning the unlocking member 15, and when the pressure on the head 18 is released, the returning operation is performed as shown in FIG.

The case 12 has an accommodating portion 25 for accommodating the quick-connect terminal portion 23, and the electric wire conductor 33 is arranged in a direction substantially perpendicular to the attaching surface 7 from the side opposite to the attaching surface 7 of the electric device 4. An electric wire insertion hole 26 for inserting the wire 12 and inserting it into the quick-connect terminal portion 23 is formed in the storage portion 25. In the case 12 of the embodiment, the housing 25 is located closer to the mounting surface 7 side than the terminal plate 3 of the end surface 4 a of the electric device 4 with the terminal connecting portion 10 attached to the terminal plate 3, and is fast. It is formed in a substantially L shape so that the outer surface of the wall 34 of the housing portion 25 contacts the end surface 4a of the electric device 4 when the wire conductor 12 is inserted into the connection terminal portion 23. Side walls 35, 3 that surround and abut against both side walls 21, 22 of the electric device 4.
6 is formed to extend in an L shape from the storage portion 25.
The end piece 14a of the wire conductor contact plate 14 is in contact with the inner surface of the wall 34 of the case 12 which is in contact with the end surface 4a of the electric device 4.

An upper wall 37 for 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 vertically divided into a pair of half bodies 1.
2a and 12b are connected by a connecting tool 47. Further, the case 12 encloses the electric wire insertion hole 26 on the electric device 4 side and the three sides on both sides thereof with partition walls 27, and forms an opening 27a on the opposite side of the electric wire insertion hole 26 from the electric device 4 side.

Further, an unlocking accommodating portion 45 for accommodating 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 an operation hole for operating the unlocking member 15 is formed in the partition wall 27. 28 is formed. This unlocking storage 4
The lower end of 5 communicates with the accommodating portion 25, an L-shaped groove 46 is formed on the inner surface of the accommodating portion 25, and the shaft portion 47 slides along the groove 46 to allow the head 18 of the unlocking member to move. Is stored in the unlocking storage portion 45, and the shaft portion 47 is positioned in the vertically extending portion of the groove 46, whereby the unlocking member 15 is movably arranged in the wire insertion direction. Further, the spring 19 has a concave portion 2 in which a bent portion 19a at one end is formed in a wall on the upper end side of the storage portion 25.
5a, the tip of the inclined portion 19b at the other end abuts the spring receiving portion 17 to support the unlocking member 15 as shown in FIG. Reference numeral 18a is an unconnected display portion formed at the end of the head portion 18, and reference numeral 28a is a display portion peep hole formed adjacent to the operation hole 28. When the electric wire conductor 33 is inserted as shown in FIG. 7, the electric wire conductor 33 is locked by the locking spring 13, and at the same time, the tip of the electric wire conductor 33 pushes the inclined surface of the spring receiving portion 17 so that the spring receiving portion 17 is fixed to the electric wire conductor 33. By sliding on the shaft portion 47 and rotating the shaft portion 47 as a center, the unconnected display portion 18a of the head portion 18 is hidden from the display portion peep hole 28a.

Further, the end portions of the side walls 35 and 36 are the electric device 4
The dimensional relationship is set so that the screw insertion hole 11 of the terminal connecting portion 10 is aligned with the receiving hole 2 of the terminal plate 3 in a state of being in contact with the inner wall 20 of the. According to this embodiment, by attaching the terminal connecting portion 10 to the terminal board 3, the terminals of the electric device 4 can be easily fast-connected without improving the terminal screw 1 of the electric device 4 to a quick-connect terminal. It can have a terminal structure. Further, since the wire conductor 33 is inserted into the quick-connect terminal portion 23 from the side opposite to the mounting surface 7 of the electric device 4 through the wire insertion hole 26 substantially perpendicularly to the mounting surface 7, the work of connecting the wire conductor 33 becomes easy.

Since the wire conductor 33 can be bent to the open side without the partition wall 27 after the wire conductor 33 is connected to the quick-connect terminal portion 23 through the wire insertion hole 26, the wire conductor 3 can be bent.
Storability of 3 is improved. Since the unlocking member 15 is housed in the partition wall 27 so as to be movable in the insertion direction of the electric wire conductor 33, the case 12 can be made compact.

Further, since the load when the electric wire conductor 33 is inserted and connected to the quick-connect terminal portion 23 can be supported by the end surface 4a of the electric device 4, the case 12 can be prevented from being damaged.
The wire conductor contact plate 14 is the end surface 4 of the electric device 4 of the case 12.
Since it contacts the inner surface of the wall 34 that contacts a, the electric wire conductor contact plate 14 is less likely to bend when the terminal connecting portion 10 is attached to the terminal plate 3 with the terminal screw 1, and the electric wire conductor contact plate 14 is less likely to bend. The bending does not make it difficult for the wire conductor 33 to be inserted.

The side walls 35, 3 are formed on both sides of the terminal connecting portion 10.
Since the outer surfaces of the side walls 35 and 36 abut on both side walls 21 and 22 of the electric device 4, the quick connection terminal device is firmly attached to the electric device 4 when the terminal connecting portion 10 is connected to the terminal plate 3. Can be fixed. Side walls 35 and 36 of the case 12
Is inserted between both side walls 21 and 22 of the electric device 4 and the tip is brought into contact with the inner wall 20, so that the screw insertion hole 26 of the terminal connection portion 10 and the receiving hole 2 of the terminal plate 3 are aligned with each other. The work of attaching the portion 10 to the terminal plate 3 is facilitated.

Further, the upper wall 37 allows the side wall 3 of the case 12 to
The strength of 5, 36 can be improved.

[0028]

According to the quick connecting terminal device of the present invention, the terminal connecting portion is attached to the terminal plate, so that the terminal screw of the electric device is not improved to the quick connecting terminal, and the terminal of the electric device is improved. Can be easily made into a quick-connect terminal structure. Further, since the wire conductor is inserted into the quick-connect terminal portion from the side opposite to the mounting surface of the electric device through the wire insertion hole substantially perpendicularly to the mounting surface, the work of connecting the wire conductor is facilitated. Also, insert the wire conductor into the wire insertion hole.
After connecting to the quick-connect terminal through the
Since the wire conductor can be bent, the wire conductor can be stored easily.
Is improved.

According to the quick-connect terminal device of claim 2 ,
In addition to the effect of 1 , the unlocking member is housed in the partition wall so as to be movable in the insertion direction of the electric wire conductor, so that the case can be made compact.

According to quick connect terminal apparatus according to claim 3, claim
In addition to the effect of 2 , the load at the time of inserting and connecting the electric wire conductor into the quick-connect terminal portion can be supported by the end surface of the electric device, so that the case can be prevented from being damaged. According to the quick-connect terminal device of claim 4 , in addition to the effect of claim 3 , the wire conductor contact plate is in contact with the inner surface of the wall of the case that contacts the end surface of the electric device, and therefore the terminal connection is made with the terminal screw. The electric wire conductor contact plate is not easily bent when the portion is attached to the terminal plate, and the electric wire conductor is not easily inserted due to the bending of the electric wire conductor contact plate.

According to the quick connection terminal device of claim 5 , in addition to the effect of claim 1, claim 2, claim 3 or claim 4 ,
Since both sides of the terminal connection part are surrounded by side walls, and the outer surface of this side wall abuts both side walls of the electric device, it is possible to firmly fix the quick-connect terminal device to the electric device when connecting the terminal connection part to the terminal board. it can. According to the quick-connect terminal device of claim 6 , in addition to the effect of claim 5 , the side wall of the case is inserted between both side walls of the electric device and the tip is brought into contact with the inner wall, whereby the screw insertion of the terminal connection portion is performed. Since the hole and the receiving hole of the terminal plate are aligned with each other, the work of attaching the terminal connecting portion to the terminal plate is facilitated.

According to the quick connect terminal apparatus according to claim 7, claim
In addition to the effect of the fifth aspect or the sixth aspect , the strength of the side wall of the case can be improved by the upper wall.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention before being attached to an electric device.

FIG. 2 is a partially cutaway front view with a quick-connect terminal device attached.

FIG. 3 is a plan view thereof.

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

FIG. 5 is a cross-sectional view of a state before the electric wire is inserted.

FIG. 6 is a cross-sectional view as seen on the opposite side at the same cross-sectional position as FIG.

FIG. 7 is a sectional view showing a state in which an electric wire is inserted.

FIG. 8 is a cross-sectional view of a state in which the unlocking member is pushed in.

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

[Explanation of symbols]

1-terminal screw 2 receiving holes 3 terminal board 4 electrical equipment 7 Mounting surface 10 terminal connection 11 Screw insertion hole 12 cases 13 Locking spring 14 Electric wire conductor contact plate 15 unlocking member 23 Quick connection terminal 25 Storage 26 Wire insertion hole 27 partitions 27a open part 28 Operation hole 33 wire conductor 34 wall 35,36 Side wall 37 Upper wall 38 Tool insertion hole 45 Storage for unlocking

Continuation of the front page (56) Reference JP-A-6-140088 (JP, A) Actual development 5-43469 (JP, U) Actual development 5-69860 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) H01R 4/48 H01H 73/02

Claims (7)

(57) [Claims] 1. A quick-connect terminal device attached to an electric device having a terminal screw and a terminal plate having a receiving hole for receiving the terminal screw, the terminal device being overlaid on the terminal plate. A terminal connecting portion that has a screw insertion hole that is aligned with, and is attached to the terminal plate through the screw insertion hole by the terminal screw, and that is electrically and mechanically connected to the terminal connecting portion. The wire conductor has a quick-connecting terminal portion having a locking spring into which a wire conductor is inserted from a side opposite to the mounting surface in a direction substantially perpendicular to the mounting surface, and a housing portion for housing the quick-connecting terminal portion. A case in which an electric wire insertion hole is formed in the storage section for inserting an electric wire conductor from a side opposite to the mounting surface of the electric device in a direction substantially perpendicular to the mounting surface and inserting the electric wire conductor into the quick-connect terminal section. , wherein the case, the electrical equipment of the electric wire insertion hole And
Surrounding both sides with partition walls, the electric device of the electric wire insertion hole
A quick-connect terminal device with the opposite side open . 2. The quick-connect terminal portion includes an electric wire conductor contact plate with which the electric wire conductor comes into contact, a locking spring for locking the electric wire conductor so as to press the electric wire conductor contact plate, and a flexing of the locking spring. And an unlocking member for unlocking the electric wire conductor, wherein the case forms an unlocking storage part for storing the unlocking member in the partition wall so as to be movable in the insertion direction of the electric wire conductor, quick connect terminal apparatus according to claim 1, wherein forming the operation hole to operate the unlocking member to the partition wall. 3. In the case, the housing portion is located closer to the mounting surface side than the terminal plate on the end surface of the electric device, and when the wire conductor is inserted into the quick-connect terminal portion, The quick-connect terminal device according to claim 2 , wherein the quick-connect terminal device is formed in a substantially L-shape so that the storage portion contacts the end surface. 4. The terminal connecting portion and the electric wire conductor contact plate are integrally formed in a substantially L shape, and the electric wire conductor contact plate is in contact with an inner surface of a wall of the case in contact with the end surface of the electric device. The quick-connect terminal device according to claim 3 . 5. The terminal plate of the electric device is surrounded by a back wall and both side walls, and the case has side walls that surround both sides of the terminal connecting portion and contact the both side walls of the electric device. , Claim 2, claim 3 or contract
The quick-connect terminal device according to claim 4 . 6. The screw insertion hole of the terminal connecting portion is aligned with the receiving hole of the terminal plate in a state where an end portion of the side wall of the case is in contact with the back wall of the electric device.
5. The quick-connect terminal device according to 5 . 7. The quick-connect terminal device according to claim 5, wherein the case has an upper wall connecting the side walls, and a tool insertion hole for tightening and loosening the terminal screw is formed in the upper wall.