JPH0793163B2 - Connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a connector in which a female contact is brought into contact with and separated from a male contact.

(Prior Art) A first conventional example of a disconnector as a connector of a control center for controlling loads such as a plurality of electric motors is shown in FIGS. 11 and 12. That is, 1 is for each phase as a male contactor, for example 3
The power source side vertical busbars 2 are two female contacts arranged vertically corresponding to these vertical busbars 1, which are folded from the base end 2a and both ends thereof so as to face each other. It is composed of a pair of curved contact piece portions 2b. Reference numeral 3 is a connection conductor, which is substantially U-shaped, and is connected to the base ends 2a, 2a of the female contacts 2, 2 by rivets 4, 4 at its base end 3a. A pair of conductive piece portions 3b bent from both ends of the pair substantially oppose the pair of contact piece portions 2b from the outside.
Further, the terminal portion 5 is formed at the tip of the pair of conductive piece portions 3b, and the connecting wire 6 is connected thereto. The integrated body of the female contactor 2 and the connecting conductor 3 is fitted and fixed in such a manner that the outer side of the conductive piece 3b of the connecting conductor 3 comes into close contact with the storage recess 7a in the two-divided insulating case 7. There is. The insulating case 7 is attached to the rear end of the control unit (not shown).

A second conventional example of the disconnector is shown in FIG. this is,
A pair of plate-shaped connecting conductors 8 are arranged so as to substantially oppose the pair of contact piece portions 2b of the two female contacts 2 from the outside, and are connected by rivets 9 at their base ends. Further, a terminal portion 10 similar to the terminal portion 5 is formed at the tip of the connection conductor 8. The integrated body of the female contactor 2 and the connecting conductor 8 is housed in the housing recess 7a in the insulating case 7 so that there is a gap outside the connecting conductor 8.

(Problems to be Solved by the Invention) In the above-mentioned first conventional example, when an overcurrent, for example, a short-circuit current flows from the vertical bus bar 1 to the female contact 2, the short-circuit current is caused by the contact pieces 2b, 2b. By flowing in the direction of the end 2a, an electromagnetic attraction force acts between the contact pieces 2b, 2b, and further, a short-circuit current flows from the base end 3a of the connecting conductor 3 to the conductive piece 3b in the direction of the terminal 5. Causes an electromagnetic repulsive force to act between the conductive piece 3b and the contact piece 2b, and these electromagnetic attraction force and electromagnetic repulsion force effectively act as a contact holding force for the vertical bus bar 1 of the contact pieces 2b, 2b. To do. However, since the conductive piece 3b of the connecting conductor 3 is closely fitted and fixed in the storage recess 7a in the case 7, the integrated body of the female contactor 2 and the connection conductor 3 is stored in the storage recess 7a. Therefore, when the female contactor 2 is connected to the vertical busbar 1, the center of the tip opening of the female contactor 2 for three phases and the center of the vertical busbar 1 for three phases are combined. Female contactor 2 must be matched at the same time
Is difficult to be connected to the vertical busbar 1.

On the other hand, in the second conventional example, there is a gap on the outer side of the connecting conductor 8, and the integrated body of the female contactor 2 and the connecting conductor 8 can be swung in the storage recess 7a. The connection to the vertical bus bar 1 is easy. However, when a current such as a short circuit current flows through the female contact 2, the connecting conductor 8 is displaced outward by the electromagnetic repulsive force generated between the contact piece 2b of the female contact 2 and the connecting conductor 8. Therefore, this electromagnetic repulsive force is not effectively applied in the direction in which the contact piece portion 2b is pressed against the vertical busbar 1. Therefore, there is a problem in that the contact portion between the contact piece portion 2b and the vertical bus bar 1 is separated by the repulsive force generated at the contact portion between the contact piece portion 2b and the vertical bus bar 1 due to the short-circuit current.

Therefore, an object of the present invention is to facilitate the coupling between the female contactor and the female contactor, and even when an overcurrent, for example, a short circuit current flows, between the female contactor and the male contactor. It is an object of the present invention to provide a connector that can surely prevent the disconnection phenomenon that occurs.

[Structure of the Invention] (Means for Solving the Problems) A connector according to the present invention comprises a pair of contacts, each of which has a base end and both ends thereof that are bent to face each other and have slits extending in the longitudinal direction. A plurality of female contacts having a piece portion, and a male contact piece being inserted into and removed from the pair of contact piece portions to come into contact with and separate from the male contact piece; and a plurality of female contact pieces. A connection conductor having a pair of conductive piece portions which are connected at the base end portion and substantially oppose to each of the pair of contact piece portions from the outside, and a terminal portion is formed at the tip end portion of the pair of conductive piece portions, and this connection A connecting member, a connecting member, and a plurality of connecting members, which are provided so as to connect the pair of conductive piece portions of the conductor and which regulate the distance between the pair of conductive piece portions to a substantially constant value so as not to spread outward. When the one-piece female contactor is stored swingably in the storage recess of the insulating case, Furnace has a feature.

(Operation) When the short-circuit current flows through the pair of contact pieces of each of the plurality of female contacts, this current is divided into upper and lower parts by the slits and distributed evenly to prevent current concentration. Further, when an electromagnetic repulsive force acts between the pair of contact pieces of the plurality of female contacts and the pair of conductive pieces of the connecting conductor, the regulating member causes the gap between the pair of conductive pieces of the connecting conductor to be substantially equal. It regulates the movement of the conductive piece to the outside by a constant regulation, and the electromagnetic repulsive force is applied in the direction in which the pair of contact pieces of the plurality of female contactors come into contact with the male contactor. The contact state is improved by energizing. Further, since the integrated body of the connecting conductor, the regulating member and the plurality of female contacts is swingably housed in the housing recess of the insulating case, the female contacts and the male contacts can be easily coupled.

(Embodiment) An embodiment in which the present invention is applied to a disconnector of a control center will be described below with reference to FIGS. 1 to 8.

First, in FIGS. 1 to 4, 11 is a vertical bus bar for a three-phase power source as a male contactor, and its end portion is formed in an arc shape. Reference numeral 12 denotes a plurality of, for example, two female contacts that correspond to and respectively contact one male contact 11 and that are respectively from the base end portion 13 and both end portions of this base end portion 13. It is composed of a pair of contact pieces 14 which are bent so as to face each other and whose tips are bent obliquely outward, and each contact piece 14 has an upper contact piece 14a and a lower contact piece 14a. A slit 15 extending in the longitudinal direction that bisects the piece 14b is formed. These female contacts 12 are brought into contact with and separated from the vertical bus bar 11 by inserting and removing the vertical bus bar 11 between the pair of contact piece portions 14, 14. 16 is a connecting conductor, which has two female contacts 1 at the upper and lower positions.
A base end portion 17 connected to the base end portions 13 and 13 of the second and second rivets 18 by rivets 18 and a pair of contact piece portions 14 and 14 which are bent from both end portions of the base end portion 17 and are substantially formed from the outside thereof. A pair of opposite conductive pieces 1
9 and a terminal portion 20 provided at the tip of these conductive piece portions 19.
It consists of and. The terminal portion 20 is composed of an L-shaped conductive portion 21 having one end connected to the upper end of the conductive piece portion 19 and a connecting pipe 22 formed at the other end of the conductive portion 21. The one end of the connecting wire 23 is connected to the connecting pipe 22 by crimping. Reference numeral 24 denotes a regulating member, which is inserted into the slit 15 and penetrates the conductive piece portions 19, 19 of the connecting conductor 16 at two upper and lower positions, and two connecting rods 25, 25 at both end portions of these connecting rods 25, 25. Stoppers such as E-stop rings 26 and 2 attached to each
6, and the distance between the conductive piece portions 19, 19 is regulated to be substantially constant so as not to spread outward. Next, in FIGS. 5 to 8, 27 is an insulating case, which is constructed by joining the rear surface portion 28a of the first split case 28 to the front surface portion 29a of the second split case 29. 30 is an insulating case 2
7 is a storage recess formed in the rear surface of which the connection conductor 16, the regulating member 24, and the two female contacts 12 are integrally housed. The connection conductor 16, the regulating member 24, and the two female contacts 12 are integrally formed so that the bottom surface is the bottom of the storage recess 30.
The upper surface of the connecting conductor 16 is placed on 30a and is pressed by a guide 31 protruding from the first split case 28 so that it cannot move in the vertical direction. A gap is formed between the parts, and the female contact 12, the regulating member 24, and the connecting conductor 16 are integrally swingable in the storage recess 30. Reference numeral 32 denotes a terminal housing portion formed in the insulating case 27, in which the connection pipe 22 and the connection wire 23 of the terminal portion 20 are housed. Reference numeral 33 denotes a vertical busbar 11 which is formed by cutting out the second divided case 29 and is a concave portion for insertion. Thus, the insulating case 27 is attached to the rear end plate 34 of the control unit.

Next, the operation of the above configuration will be described.

When the control unit including the insulating case 27 is inserted and housed in the unit room of the control center, two female contacts 12 for each of the three phases are connected by fitting in correspondence with each vertical busbar 11. In this case, the centerline of the female contactor 12 and the vertical busbar 11
Even if the inclined tip end of the contact piece portion 14 hits the tip end portion of the vertical bus bar 11 due to a slight deviation from the center line of the female contactor 12, the regulating member 24 and the connecting conductor.
The contact pieces 14, 14 come into contact with the vertical bus bar 11 by swinging the one-piece 16 in the storage recess 30.

The contact pieces 14, 14 of each of the two female contacts 12 are the vertical busbars 1.
When an electric current flows through the load while it is in contact with 1, the electric current is divided into upper and lower parts by the slit 15 from the vertical bus bar 11 to the contact pieces 14, 14 of the female contact 12 as shown by arrow A. The contact piece portion 14a and the lower contact piece portion 14b are evenly divided and flow from the tip end portion toward the base end portion 13, and further, the rivet 18
Through the connecting conductor 16 at its proximal end 17 as indicated by arrow B.
Flow toward the tip of the conductive piece portion 19,19 and then through the conductive portions 21,21 of the terminal portions 20,20 from the connecting pipes 22,22 to the connecting wire 2
It flows to 3,23.

Here, the force acting on each part when the current flows through the female contact 12 will be considered.

(1) Between the contact portions between the vertical busbar 11 and the contact pieces 14, 14 of the female contact 12, there is a force F1 proportional to the current that separates the contact pieces 14, 14 from the vertical busbar 11. To work.

(2) When a current flows through the contact pieces 14, 14 of the female contactor 12 in the direction of arrow A, a force F2 is exerted between the contact pieces 14, 14 to attract each other.

(3) When a current flows in the conductive piece portions 19, 19 of the connection conductor 16 in the direction of arrow B, the conductive piece portions 19, 19 and the contact piece portions 14, 14 of the female contact 12 are repulsed from each other. Force F3 acts.

Thus, the force F3 attempts to displace the conductive piece portions 19, 19 to the outside, but the spacing between them is regulated substantially constant by the regulation member 24, and the displacement of the conductive piece portions 19, 19 to the outside is prevented. Therefore, this force F3 acts in the direction in which the contact pieces 14, 14 are pressed against the vertical generatrix.

In summary, since the contact pieces 14, 14 are pressed against the vertical bus bar 11 by the force of (F2 + F3-F1), even if a temporary short circuit current flows, the contact piece part 14 of the female contact 12 and the vertical bus bar There is no separation between 11 and 11 and a good contact state can be maintained.

According to the above embodiment, the following effects can be obtained.
That is, the connecting conductor 16, the regulating member 24, and each two female contacts
Since the 12 integrated parts are swingably housed in the housing recess 30 of the insulating case 27 with a gap on both sides thereof, unlike the first conventional example, the female contact 12 is attached to the vertical bus bar 11. Can be easily combined. Also, two female contacts each
Since the slits 15 extending in the longitudinal direction are formed in the contact piece portions 14 of 12, the contact piece portion 14 is divided into an upper contact piece portion 14a and a lower contact piece portion 14b, and the vertical bus bar 11 is contacted at multiple points. ,
When a short-circuit current flows, it can be distributed to the upper contact piece 14a and the lower contact piece 14b of each of the two female contacts 12 to prevent the concentration of the short-circuit current. The repulsive force F1 that separates the contact part can be greatly reduced. Furthermore, since the spacing between the conductive piece portions 19, 19 of the connection conductor 16 is regulated to be substantially constant by the regulation member 24 so as not to spread outward, the contact piece portions 14, 19 of the conductive piece portions 19, 19 and the female contactor 12, 14
The repulsive force F3 between and can be effectively acted in the direction in which the contact pieces 14 and 14 are pressed against the vertical bus bar 11, and unlike the second conventional example, even if a temporary short circuit current flows, a female contact is made. Contact piece of child 12
It is possible to reliably prevent the contact portion between 14 and the vertical bus bar 11 from separating, and it is possible to maintain a better contact state.

9 and 10 show another embodiment of the present invention.
The difference from the above-mentioned embodiment is that the outer side of the pair of conductive piece portions 19 of the connection conductor 16 is pressed by the rectangular frame-shaped stop plate 35 as a restricting member, and the same effect as that of the above-mentioned embodiment is obtained. Is played.

[Effects of the Invention] As is apparent from the above description, the present invention has a pair of contact piece portions in which a base end portion and a pair of contact piece portions that are bent so as to face each other and that have slits extending in the longitudinal direction are formed. , A plurality of female contacts that are inserted into and removed from the pair of contact pieces to contact and separate from the male contacts, and the female contacts are connected to the plurality of female contacts at the base end. A connecting conductor having a pair of conductive pieces that respectively substantially oppose each other from the outside to each of the pair of contact pieces, and a terminal portion formed at the tip of the pair of conductive pieces, and a pair of conductive pieces of the connecting conductor. A connecting member, a connecting member, a connecting member, and a plurality of female contacts. It is characterized in that the integrated body of the This makes it possible to easily couple the female contactor to the male contactor and prevent the short-circuit current from concentrating even when an overcurrent, for example, a short-circuit current flows, so that the contact portion is opened. The repulsive force that causes the repulsive force can be significantly reduced, and the repulsive force generated between the pair of contact pieces of the female contactor and the pair of conductive pieces of the connecting conductor can contact the male contactor. It is possible to obtain the effect that it is possible to surely prevent the separation phenomenon between the female contact and the male contact by being actuated in the direction of.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 8 show an embodiment of the present invention. FIG. 1 is a sectional view taken along line I-I in FIG. 8, and FIG. 2 is FIG. A sectional view taken along the line II-II, FIG. 3 is a top view of an integrated body of a female contactor and a connecting conductor, FIG. 4 is a side view of the same, and FIG. 5 is an exploded perspective view of an insulating case. The figure is the whole rear view, FIG. 7 is the same top view, FIG. 8 is the same side view, and FIG. 9 and FIG.
FIG. 11 is a view equivalent to FIG. 3 and FIG. 4 showing another embodiment of the present invention, FIG. 11 is a top view showing a part of the first conventional example in a cutaway manner, and FIG. FIG. 13 is a cross-sectional view of the main part of the second conventional example. In the figure, 11 is a vertical bus bar for a power supply (male contactor), 12 is a female contactor, 13 is a base end portion, 14 is a contact piece portion, 15 is a slit, 16 is a connecting conductor, 17 is a base end portion, 19 is a conductive piece, 20 is a terminal, 24
Is a regulating member, 27 is an insulating case, 30 is a storage recess, and 35 is a stop plate (regulating member).

Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location H02B 11/04 (72) Inventor Akira Ogawa 2121 No. Sayo, Mie-gun, Mie-gun, Mie Prefecture Toshiba Mie Factory Co., Ltd. (56) References JP-A-59-207517 (JP, A) JP49-9969 (JP, Y1) JP57-6650 (JP, B2)

Claims (1)

[Claims] 1. A pair of contact pieces having a base end portion and a pair of contact piece portions which are bent so as to face each other and are formed with slits extending in the longitudinal direction, and a male contact is provided between the pair of contact piece portions. A plurality of female contacts that are inserted into and removed from the male contacts and are separated from the male contacts, and a plurality of female contacts connected at their proximal ends to the pair of contact pieces from the outside, respectively. A connection conductor having a pair of conductive piece portions that are substantially opposed to each other and a terminal portion formed at the tip of the pair of conductive piece portions, and a pair of conductive piece portions of the connection conductor that are provided to connect the pair of conductive piece portions. A restricting member that restricts the distance between the conductive pieces to a substantially constant value so as not to spread outward, and the connection conductor, the restricting member, and a plurality of female contacts are integrally rocked in the accommodating recess of the insulating case. A connector characterized by being stored as much as possible.