JP2015179598A - circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology for improving a degree of freedom relating to arrangement of mechanism parts without notching a trunk bar at all in a circuit breaker including plug terminals connected to the trunk bar and including internal devices such as a leakage substrate.SOLUTION: The circuit breaker includes three plug terminals 1, 2 and 3 which are connected to the trunk bar, at a power source side within a casing. At least two or more spaces are provided among an inter-groove space 4 formed between grooves into which the trunk bar is inserted within the casing, an upper space 5 formed higher than a groove on a top stage within the casing, and a lower space 6 formed lower than a groove on a bottom stage within the casing. A plurality of internal devices are disposed in these spaces.

Description

  The present invention relates to a circuit breaker for wiring.

  In a circuit breaker provided with a plug terminal connected to the main bar, for example, provided with an internal device such as a leakage detection device, the integration rate increases, and the degree of freedom regarding the arrangement of the mechanism portion decreases.

  As a technology to improve the degree of freedom regarding the arrangement of the mechanism part, in the distribution board of the type in which three main bars are stacked, among the three main bars, the central bar is partially cut out, Among plug-in type circuit breakers that are used by fitting, the space in the housing is expanded by using a portion corresponding to the cutout shape as a non-grooved portion, and the expanded space is used as a storage portion for internal equipment. Is disclosed (Patent Document 1).

  However, the technique of Patent Document 1 requires a notch in the main bar, and there is a problem that it is difficult to apply the technique to an existing distribution board.

JP 2002-75162 A

  The object of the present invention is to solve the above-mentioned problem, and is a circuit breaker having a plug terminal connected to the main bar, which is provided with an internal device such as a leakage circuit board. It is to provide a technique for improving the degree of freedom regarding arrangement.

  The circuit breaker according to claim 1, which has been made to solve the above problem, is a circuit breaker provided with a plug terminal connected to the main bar on the power supply side in the housing, and in the housing, A plurality of inter-groove spaces formed between the groove portions into which the main bar enters, an upper space formed above the uppermost groove portion in the housing, and formed below the lowermost groove portion in the housing. Among the lower spaces, at least two or more spaces are provided, and a plurality of internal devices are arranged in these spaces.

  According to a second aspect of the present invention, there is provided the circuit breaker according to the first aspect, wherein the inter-groove space or the upper space or the lower space is formed in an expansion space formed by expanding the width direction of the housing. It is characterized by having arranged.

  The invention according to claim 3 is the circuit breaker according to claim 1, wherein at least one of the internal devices is a component of a substrate.

  The invention according to claim 4 is the circuit breaker according to claim 1, wherein at least one of the internal devices is a substrate body.

  Invention of Claim 5 is the circuit breaker in any one of Claims 1-4. WHEREIN: The upper space formed above the uppermost groove part in the said housing, and the lowermost groove part An internal device is arranged in at least one of the lower spaces formed below.

  According to a sixth aspect of the present invention, in the circuit breaker according to the fifth aspect, an internal device is arranged in a lower space formed below the lowermost groove in the housing. is there.

  In the wiring circuit breaker according to the present invention, in the wiring circuit breaker provided on the power source side in the housing, a plurality of spaces between the groove portions formed between the groove portions in which the main bar enters, At least two or more spaces among an upper space formed above the upper groove portion and a lower space formed below the lowermost groove portion in the housing are provided, and a plurality of internal devices are provided in these spaces. Since a space that is not normally used is used as a storage space for internal devices, the degree of freedom regarding the arrangement of the mechanism portion is improved without notching the main bar as in the prior art. be able to. In addition, since the element of the leakage detection device has a characteristic that it is vulnerable to heat, it has been necessary to take measures against heat for the bimetal that emits a large amount of heat in the housing. Is separated from the main space in which the bimetal etc. are housed in the housing by a partition wall, so that sufficient heat shielding effect can be obtained by simply placing these elements in the “space between plug terminals” and “expansion space”. Can be obtained.

  According to a second aspect of the present invention, by arranging an internal device in an extended space formed by expanding the space between the groove portions or the upper space or the lower space in the width direction of the casing, The storage space for the internal device can be increased without being affected.

  As in the third or fourth aspect of the present invention, when the constituent elements of the substrate or the substrate body are arranged in the “space between plug terminals” or the “expansion space”, this is an effective heat countermeasure.

  According to the fifth or sixth aspect of the present invention, in the housing, at least any of the upper space formed above the uppermost groove and the lower space formed below the lowermost groove is an internal device. By arranging this, it is possible to secure a larger storage space for the internal device.

It is a whole perspective view of the circuit breaker for wiring of this embodiment. It is side surface sectional drawing of the circuit breaker for wiring of this embodiment. It is a front view of the circuit breaker of this embodiment. It is a principal part enlarged view of the circuit breaker for wiring of this embodiment. It is side surface sectional drawing of the circuit breaker for wiring of other embodiment. It is side surface sectional drawing of the circuit breaker for wiring of other embodiment. It is side surface sectional drawing of the circuit breaker for wiring of other embodiment.

  Preferred embodiments of the present invention are shown below.

  In the present embodiment, as shown in FIG. 2, in the circuit breaker provided with three plug terminals 1, 2, and 3 connected to the main bar as shown in FIG. In the housing, a plurality of inter-groove spaces 4 formed in the groove portion into which the main bar enters, an upper space 5 formed above the uppermost groove portion 1 and a lower groove portion 3 are formed below. As shown in FIG. 3, the lower space 6, and the space 4 between the grooves, the upper space 5, and the lower space 6 are expanded into an expansion space 7 formed in the width direction of the housing. For example, a leakage detection device, CT, ZCT, etc.) are arranged.

  These spaces are conventionally empty spaces, and in the present invention, these spaces are used as storage spaces for internal devices. Furthermore, an expanded upper space 15 formed above the expansion space 7 and an expanded lower space 16 formed below the expansion space 7 may be used as a storage space for the internal device. it can. At least two or more of these spaces are provided. In this embodiment, an example in which all of these spaces are provided is shown.

  In the present embodiment, as shown in FIG. 2, a part 8 such as a wiring or an element is accommodated in the upper space 5, a part of the ZCT 9 is accommodated in the lower space 6, and a leakage detection device is provided in the inter-groove space 4. The element 10 is housed.

  Since the lower space 6 is easier to secure than the other spaces, it is preferable to store CT or ZCT here. In the present embodiment, as shown in FIG. 2, the ZCT 9 is disposed obliquely in the lower space 6. With this arrangement, when an electric wire is wired downward from the plug terminals 1, 2, 3 to the ZCT and wired toward the inside of the housing via the ZCT, an unnecessary load is applied to the electric wire. Wiring work can be performed without spending time.

  As shown in FIG. 4, a partition wall 12 is formed between the inter-groove space 4 and the main space 11 in which a bimetal or the like is accommodated in the housing. Since the element 10 of the leakage detection device has a characteristic that it is sensitive to heat, conventionally, a countermeasure against heat is required for the bimetal that emits a high amount of heat in the housing. In the present embodiment, the partition wall 12 is thus made. Since the element 10 of the leakage detecting device is arranged in the space 4 between the grooves partitioned by the above, a sufficient heat shielding effect can be obtained without taking special measures against heat as in the prior art.

  Since the upper and lower lengths of the upper space 5 and the lower space 6 are easy to secure, the upper space 5 is made larger as shown in FIG. 5, and the trip device 13 of the leakage detecting device is arranged here, as shown in FIG. As shown, the lower space 6 is made larger, and the entire board body 14 is arranged with the board surface facing the power supply side (the direction in which the main bar is located when the circuit breaker for wiring is connected to the main bar). You can also In addition, as shown in FIG. 7, a part of the substrate main body 14 can be arranged with the board surface facing the side surface of the housing. CT or ZCT can also be attached to the substrate body 14.

  Normally, an earth leakage board, an earth leakage test button, and the like are arranged in the vicinity of the trip device 13, and the earth leakage test button is provided on the upper surface of the casing. Therefore, as shown in FIG. Thus, all these components can be efficiently arranged.

  In the above embodiment, the handle side is described as the upper side of the circuit breaker for wiring, and the mounting surface is the lower side. However, in use, the handle side is the front side and the mounting surface is the back side. As another type, in which the power supply terminal for inserting the main bar is provided on the bottom side of the circuit breaker for wiring, one end side and the other end side in the longitudinal direction of the housing correspond to the upper side and the lower side of the present embodiment. To do.

1, 2, 3 Plug terminal 4 Space between grooves 5 Upper space 6 Lower space 7 Expansion space 8 Solenoid 9 ZCT
DESCRIPTION OF SYMBOLS 10 Element 11 of an earth leakage detection device Main space 12 Bulkhead 13 Trip device 14 Board body 15 Expanded upper space 16 Expanded lower space

Claims (6)

A circuit breaker provided with a plug terminal connected to the main bar on the power supply side in the housing,
Within the housing, a plurality of inter-groove spaces formed between the grooves into which the main bar enters,
An upper space formed above the uppermost groove in the housing,
Providing at least two or more spaces among lower spaces formed below the lowermost groove in the housing;
A circuit breaker for wiring, wherein a plurality of internal devices are arranged in these spaces.   2. The circuit breaker according to claim 1, wherein an internal device is arranged in an extended space formed by expanding the space between the grooves or the upper space or the lower space in the width direction of the housing.   The circuit breaker according to claim 1, wherein at least one of the internal devices is a component of a substrate.   The circuit breaker according to claim 1, wherein at least one of the internal devices is a substrate body.   The internal device is arranged in at least one of an upper space formed above the uppermost groove and a lower space formed below the lowermost groove in the casing. The circuit breaker for wiring in any one of 1-4.   6. The circuit breaker according to claim 5, wherein an internal device is arranged in a lower space formed below the lowermost groove in the casing.