JP3501402B2 - Circuit breaker for wiring - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-in type circuit breaker in which a conductive bar to be connected can be selected by moving a position of a plug terminal.

[0002]

BACKGROUND OF THE INVENTION Wiring circuit breakers used in single-phase, three-wire wiring paths allow the conductive bars to be connected to be changed in order to switch the voltage or balance the load on the lines. There is a need. In the case of a circuit breaker for wiring having a normal screw type terminal, this requirement can be met by exchanging the connection fitting with the conductive bar.
However, in the case of the plug-in type circuit breaker, the plug terminals formed on the front surface of the case of the circuit breaker for wiring are directly inserted and connected to the conductive bars arranged in parallel in three stages above and below. It is not possible to deal with it by using the metal fittings, and in order to change the conductive bar to be connected, it is necessary to change the vertical position of the plug terminal.

The simplest countermeasure for this is to manufacture three types of plug-in type circuit breakers in which two plug terminals are arranged in different positions in the groove to which the three conductive bars are connected. It is to use properly. However, this method is inconvenient because, for example, when a customer wants to adjust the load balance, a new circuit breaker for wiring must be purchased and replaced. Therefore, there has been a demand for a plug-in type circuit breaker for wiring, which allows consumers to easily change the position of the plug terminal.

Therefore, as disclosed in Japanese Patent Laid-Open No. 2001-35341, an inner housing portion is provided in the front part of the case of the circuit breaker for wiring, and a plug terminal is movably arranged therein.
It has been proposed that the position of the plug terminal can be easily changed in the inner housing by an operation from the outside. The wiring circuit breaker described in this publication allows the plug terminal to slide along a guide provided in the inner housing.

In this type of circuit breaker, however, the plug terminals are movably arranged in the inner housing of the case, so that the positions of the plug terminals are difficult to see from the outside and the positions of the plug terminals are not stable. . For this reason, if the plug terminal cannot be connected to the conductive bar when the position of the plug terminal is displaced, or if the plug is forcibly connected, the plug terminal and the member molding the plug terminal may be damaged. Furthermore, the operation part that moves the plug terminals inside the inner storage part is on the top of the case, so if you operate the conductive bar by inserting it into the plug terminals and operate it incorrectly, the operation parts and plug terminals will be damaged. There was a fear.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and allows a customer to easily change the position of the plug terminal, and the plug terminal should be placed in a position other than the correct position corresponding to the conductive bar. It was made to provide a new wiring breaker that was not able to be moved to.

[0007]

MCCB of the present invention has been made in order to solve the above object, according to an aspect of the the front end portion of the case, the repositionable plug terminal in the vertical direction, Hirakuko
For the first time, the position of the plug terminal is allowed to change, and if the plug terminal is not in one of the fixed positions, it will not close.
It is characterized by the provision of a cover . Plastic
The closing portion that hides the operating portion of the plug terminal may be provided at the tip of the cover, or the operating portion of the plug terminal may be provided at the front surface or the bottom surface of the case. According to the invention of claim 4, the plug terminal is rotatably provided at the front end of the case together with the mold member, and the rotation path thereof passes through the outside of the case. In this case, it is preferable that the rotary shaft of the plug terminal is hollow and the twisted wire of the plug terminal is passed through the hollow shaft. Further, an indication indicating the direction of the plug terminal can be provided on the rotary operation portion of the plug terminal. Further, the plug terminal may have a structure in which two terminal bodies are provided at an angle.

Further, in the invention of claim 8, the plug terminal together with the mold member is provided at the front end of the case so as to be removable, and the movement path thereof passes through the outside of the case.

In any of the inventions, the terminal position regulating member
The cover is a structure that is attached to the front end of the case so as to be rotatable outward, and can be attached to the case in one up / down two directions, and the mounting direction depends on the position of the plug terminal. Structure determined in one direction
It can be. Further, in any of the inventions, the number of plug terminals whose position can be changed in the vertical direction can be two or more.

The circuit breaker for wiring according to the present invention is provided with a plug terminal whose position can be changed in the vertical direction at the front end portion of the case and an opening member.
For the first time, the position of the plug terminal is allowed to change, and if the plug terminal is not in one of the fixed positions, it will not close.
Since it is provided with a cover ,
The position of the plug terminal can be easily changed by moving the cover , which is the outside, from the case. Further, by preventing the cover from being returned to the inside of the case at a position where the plug terminal is halfway, it is possible to prevent the plug terminal from moving to a position other than the correct position. Preferred embodiments of the present invention are shown below.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 8 are views showing a first embodiment, in which a front end portion (end portion on the conductive bar side) of a case 1 of a circuit breaker for wiring. , Three grooves 2 to which N-pole, L1-pole, and L2-pole conductive bars are respectively connected in order from the top. In the case 1 on the inner side of the groove 2, two plug terminals 3 are provided in two upper and lower stages.

As shown in FIG. 7, each plug terminal 3 is formed by molding a metal-made terminal main body 4 to be inserted into a conductive bar with a resin molding member 5. A circular projection 6 protruding from the rear surface of the mold member 5 at an eccentric position serves as a rotation axis. By engaging the circular projection 6 with a hole of the case 1, the front end of the case 1 can be rotated in the vertical direction. Is installed as. In addition, the front surface of the rotary shaft is a rotary operation unit 7, which is an operation unit.
For example, each plug terminal 3 can be rotated by a minus driver. As shown in FIG. 8, if a display 8 such as an arrow indicating the direction of the plug terminal 3 is provided in this portion,
Easy to operate. Besides this, as shown in FIG.
In the case where the individual terminal bodies 4 are arranged in a V shape or in a fan shape, there is no need to move between the two positions corresponding to the two conductive bars, so the rotation angle is reduced and the work The twisting of the stranded wire 13 is less likely to occur.

The height of the rotating shaft of each plug terminal 3 is at the center of the three grooves 2, and when the upper plug terminal 3 is rotated upward, the height is matched with the groove 2 of the N pole, and downward. When rotated to, the height becomes the same as the groove 2 of the L1 pole. Similarly, when the lower plug terminal 3 is rotated upward, the groove 2 of the L1 pole is
The height is the same as that of, and when rotated downward, the height is the same as that of the groove 2 of the L2 pole.

As shown in FIGS. 2 to 4, on one side of the front end of the case 1, there is a rotary cover 1 which is a terminal position regulating member.
1 is provided. The cover 11 is rotatable around a vertical axis toward the outside of the case 1. The above-mentioned plug terminals 3 are housed in the front end of the case 1 in use, but the rotation path for changing the position passes through the outside of the case 1. Therefore, after surely popping out of the case 1, The case 1 is rotated and moved so as to enter the front end portion of the case 1 again.

Therefore, the rotation of each plug terminal 3 is allowed only by opening the rotary cover 11 which is a position regulating member, and each plug terminal 3 can be moved to any fixed position. For example, the cover 11 does not close. Specifically, as shown in FIG. 1, the cover 11
Since the side surface 12 is in close contact with the side surface of each plug terminal 3 in the closed state, each plug terminal 3 cannot be rotated unless the cover 11 is rotated to the outside of the case 1, and each plug terminal 3 is rotated. The rotating cover 11, which is the position restricting member, cannot be returned while 3 is rotating. Even if the plug terminal 3 is slightly displaced from the home position, the cover terminal 11 can be moved to force the plug terminal 3 to be placed in the home position by closing the cover 11.

Therefore, the position of the plug terminal 3 is not accidentally displaced, and the plug terminal 3 is accurately positioned. Further, in this embodiment, since the rotating shaft is provided on the front surface side into which the conductive bar of the case 1 is inserted,
The size of the circuit breaker for wiring in the longitudinal direction and the height direction can be reduced, and in combination with the fact that the plug terminal 3 is allowed to pop out of the case 1 once during the rotation as described above, The size of can also be reduced.

As shown in FIG. 7, the rotary shaft of the plug terminal 3 is hollow and has an internal space for accommodating the twisted wire 13. The twisted wire 13 does not get entangled during rotation, and is prevented from being caught and damaged. ing.

In this embodiment, the upper side is the N pole, the middle side is the L1 pole, and the lower side is the L2 pole. Therefore, when 100 V is required, the upper plug terminal 3 is connected to the upper N pole.
The lower plug terminal 3 may be connected to the intermediate L1 pole or the lower L2 pole as shown in FIG. 1 or 5. Therefore, it is possible to connect the poles of L1 and L2 with one type of circuit breaker for wiring and balance the poles. Also, 200
When V is required, it is connected to the poles of L1 and L2, so that the upper plug terminal 3 is at the intermediate position and the lower plug terminal 3 is at the lower position as shown in FIG. By providing the two plug terminals 3 in this way, L1,
The balance of the poles connected to L2 and the switching of 100V / 200V can be easily performed with one wiring breaker. In addition, in the wiring breaker for 100V which balances the poles of L1 and L2, the conductive bar is arranged so that the upper side is the L1 pole, the middle side is the N pole, and the lower side is the L2 pole, and the middle side N pole is fixed. And a rotating plug terminal that switches between the upper L1 pole and the lower L2 pole is provided, and the rotating shaft of the rotating plug terminal is the center of the upper L1 pole and the lower L2 pole, that is, the intermediate side. Compared to the one in which the rotating shaft is positioned at the same height as the N pole plug terminal, the upper side is the N pole as in the above embodiment,
In the case where the middle side is the L1 pole and the lower side is the L2 pole, the rotation axis can be provided at the center of the middle side L1 pole and the lower side L2 pole, so that the width can be narrowed, and in recent years, a narrower width is desired. It is especially effective for existing circuit breakers.

If a window portion 14 is provided on the upper surface of the case 1 and 100 V, 200 V display or a corresponding color display is provided on the upper surface side of the terminal main body 4 of the upper plug terminal 3 and one end of the molding member, the upper display can be obtained. When the plug terminal 3 of 100 is used for 100V, a 100V display can be seen, and when it is used for 200V, a 200V display can be seen. Also, with a plug terminal 3 as shown in FIG.
When the voltage is V, the plug member 3 is rotated, so that the mold member 5 can be seen, which has an effect of making it easy to distinguish. When the upper plug terminal 3 is rotated in the state shown in FIG. 2, the upper mold member 5 contacts the lower terminal body 4, so that the terminal bodies 4 of both plug terminals correspond to the same conductive bar. Like never to be located.

Further, (1) the rotation operation portion 7 of the plug terminal 3 is provided on the front surface (or bottom surface) of the case, in other words, in a hidden place in the mounted state in which the conductive bar is inserted into the plug terminal 3, and ( 2) Cover 1 at the tip of cover 11.
When the cover 1 is closed, a closing portion 15 is provided to hide the rotation operation portion 7 of the plug terminal 3, and when the cover 11 is closed, the rotation operation portion 7 is mistakenly operated or bumped somewhere during work to plug the plug. The position of the terminal 3 does not shift, and there is no possibility that the operating portion or the plug terminal is damaged by being operated by mistake when the plug terminal is inserted in the conductive bar. It should be noted that if at least one of the configurations (1) and (2) described above is present, the same operation is performed. This rotation operation part 7
If the color is set to a color different from that of Case 1, the place where the operation is performed can be identified instantly. For example, in the case of exclusive use for 100V, if the upper plug terminal 3 is immovably fitted, the rotation operation part has the same color as the case, and only the rotation operation part of the lower plug terminal 3 is changed in color, There is no fear of making a mistake.

Further, as shown in FIG. 2, a conductive bar is displayed on the inside of the cover 11 which is a terminal position regulating member (N, L1,
L2) is convenient because the cover 11 is always seen when the plug terminal 3 is moved. Further, when the label is displayed on the inside of the cover 11, there is no fear of being confused because the seal is removed or it is hard to see due to dirt as in the case of being displayed on the outside of the case 1.

Further, 100V-200V switching, L1-
Two moving plug terminals 3 are provided for balancing the pole of L2, but in addition to this, an L terminal dedicated to 100V is used.
In order to balance the poles of 1-L2, a fixed plug terminal 3 is provided as a common terminal in the groove on the upper side, and the moving plug terminal 3 is provided as shown in the lower row of FIG.
Alternatively, the rotary cover 11 may be provided in a size of 2/3 and a cover for opening the middle and lower parts may be provided. In addition, in this embodiment, the terminal position restricting member is the rotary cover 11 having the case 1 and the locking portion 16 that is locked by the urging force, but it is integrally molded through the case and the elastic piece (flexible portion). Alternatively, a detachable detachable type may be used, and if the cover 11 is transparent, the position of the plug terminal can be seen at a glance.

(Second Embodiment) FIGS. 10 to 12 show a second embodiment. In the second embodiment, the lower plug terminal is a fixed terminal (not shown) arranged in the lower groove, and the position changeable plug terminal 3 is only the upper one. Therefore, according to the conductive bar arrangement described above, it is possible to obtain 200V when the plug terminal 3 is on the middle side and 100V when the plug terminal 3 is on the upper side, and it is possible to switch between 100V and 200V.

The cover 21, which is a terminal position regulating member, is detachable from the case 1 and has a substantially U-shaped cross section as shown in FIG. Since the rotational movement path of the plug terminal 3 passes through the outside of the case 1 as in the above embodiment, the plug terminal 3 cannot be rotated unless the cover 21 is removed. A protrusion 22 is provided on the inside of the cover 21, and the cover 21 cannot be fitted unless the protrusion 22 is provided on the side where the plug terminal 3 is not provided. For this reason, when the plug terminal 3 is on the upper side, the cover 21 is turned upside down so that the inner protrusion 22 does not come in the lower side.

Then, a window hole 14 is provided on the upper surface of the case 1 so that the outside of both horizontal pieces of the cover 21 can be seen so that a display with characters or colors of 100V or 200V can be performed. .

(Third Embodiment) FIGS. 13 and 14 show a third embodiment. In this embodiment, the two plug terminals 3 are detachable and are attached to the front end of the case 1 so as to be removable. The cover 31, which is a terminal position restricting member, has a structure that opens to the front of the case 1 and is engaged with the engaging portion 33.
In this embodiment, the cover 31 is opened forward as shown in FIG. 13, the plug terminal 3 is once removed outward in the lateral direction of the case 1 and moved vertically as shown in FIG. 14, and then the plug terminal 3 is fitted into the fixed position again. It is supposed to be crowded. A protrusion 32 is provided on the inner surface of the cover 31 so that the cover 31 can be closed only when the plug terminal 3 is in the proper position.

[0027]

[0028]

[0029]

[0030]

[0031]

As described above, the circuit breaker for wiring according to the present invention has the plug terminal whose position can be changed in the vertical direction at the front end portion of the case, and allows the position change of the plug terminal only when it is opened. Together with the plug terminal
Since the cover that does not close unless it is in the position is provided, the position of the plug terminal can be easily changed by moving the cover , which is the terminal position restricting member , from the case to the outside. Further , the cover , which is the terminal position restricting member , cannot be returned to the inside of the case unless the plug terminal is moved to the correct position, so that the plug terminal can be correctly positioned. Therefore, unlike the conventional case, there is no possibility that the plug terminal at a halfway position is forcibly inserted into the conductive bar and damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which plug terminals are arranged in an upper stage and a middle stage in the first embodiment.

FIG. 2 is a perspective view showing a state in which a cover is opened.

FIG. 3 is a perspective view showing a state in which the middle plug terminal is being moved to a lower stage.

FIG. 4 is a perspective view showing a state in which the middle plug terminal is being moved to a lower stage.

FIG. 5 is a perspective view showing a state where the movement to the lower stage is completed.

FIG. 6 is a perspective view showing a state in which plug terminals are arranged in a middle stage and a lower stage in the first embodiment.

FIG. 7 is a perspective view showing a front surface and a rear surface of a plug terminal.

FIG. 8 is a perspective view showing a front surface and a rear surface of a modified plug terminal.

FIG. 9 is a perspective view showing a front surface and a rear surface of a plug terminal of another modification.

FIG. 10 is a perspective view showing a state in which a cover is removed in the second embodiment.

FIG. 11 is a perspective view showing a state where the upper plug terminal is being moved to the middle tier.

FIG. 12 is a perspective view of a cover.

FIG. 13 is a perspective view showing a state in which a cover is rotated in the third embodiment.

FIG. 14 is a perspective view showing a state in which the middle plug terminal is being moved to a lower stage.

[Explanation of symbols]

1 Case of Wiring Circuit Breaker 2 Groove to which Conductive Bar is Connected 3 Plug Terminal 4 Terminal Body 5 Molding Member 6 Circular Protrusion 7 Rotation Operating Section 8 Indication showing Direction of Plug Terminal 11 Terminal Position Restricting Member in First Embodiment Rotatable cover 12 Side surface 13 of cover 14 Stranded wire 14 Window portion 15 Closing portion 16 Locking portion 21 Cover 22 which is a terminal position regulating member in the second embodiment 31 Protrusion 31 Terminal position regulating member in the third embodiment Cover 32 protrusion 33 engaging portion

Claims (11)

(57) [Claims] The front end of claim 1 Case, the repositionable plug terminal in the vertical direction, with the first time allows for repositioning of the plug terminal by opening, either the plug terminal
A breaker for wiring, which is provided with a cover that does not close unless it is in a fixed position . 2. A closure part for hiding the operation part of the plug terminal,
The circuit breaker according to claim 1, which is provided at a tip of the bar . 3. The circuit breaker for wiring according to claim 1, wherein the operating portion of the plug terminal is provided on the front surface or the bottom surface of the case. 4. The plug terminal is rotatably provided together with the mold member at the front end of the case, and the rotation path thereof passes outside the case.
A circuit breaker for wiring according to any one of 3 to 3. 5. The circuit breaker for wiring according to claim 4, wherein the rotary shaft of the plug terminal is hollow and a twisted wire of the plug terminal is passed through the hollow shaft. 6. The circuit breaker according to claim 1, wherein the plug terminal is provided with two terminal bodies at an angle. 7. The circuit breaker for wiring according to claim 4, wherein an indicator indicating the direction of the plug terminal is provided on the rotary operation portion of the plug terminal. 8. A plug terminal, together with its molding member, is provided at the front end of the case so as to be removable.
2. The circuit breaker for wiring according to claim 1, wherein the movement path thereof passes through the outside of the case. 9. The circuit breaker according to claim 1, wherein the cover is rotatably attached to a front end portion of the case. 10. The cover according to claim 1, wherein the cover can be attached to the case vertically in two directions with one touch, and the direction of attachment is determined to be one direction depending on the position of the plug terminal. The circuit breaker according to any one of claims. 11. A plug end whose position can be changed in the vertical direction.
The child according to any one of claims 1 to 10, wherein two or more children are provided.
Circuit breaker for wiring.