CN111383865A - Circuit breaker for wiring - Google Patents
Circuit breaker for wiring Download PDFInfo
- Publication number
- CN111383865A CN111383865A CN201911335924.6A CN201911335924A CN111383865A CN 111383865 A CN111383865 A CN 111383865A CN 201911335924 A CN201911335924 A CN 201911335924A CN 111383865 A CN111383865 A CN 111383865A
- Authority
- CN
- China
- Prior art keywords
- mounting rail
- engaging portion
- pressing plate
- wiring
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010586 diagram Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 101100183151 Dictyostelium discoideum mccb gene Proteins 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H2071/0292—Housing or frames containing grooves or slots for guiding movable parts
Landscapes
- Breakers (AREA)
- Distribution Board (AREA)
Abstract
The invention provides a circuit breaker for wiring, which can not slide off from a mounting rail due to self weight and can slide on the mounting rail. The wiring breaker (1) is a wiring breaker whose back side is detachably mounted on a mounting rail (2), and comprises a fixed engagement part (12), a movable engagement part (20), and a pressing plate (30). The fixed engaging portion (12) engages with one protruding portion (4) of a pair of protruding portions (4, 5) provided on the mounting rail (2). The movable engaging portion (20) is engageable with the other protruding portion (5) of the pair of protruding portions (4, 5) so as to be able to engage/disengage. The pressing plate (30) is biased in a direction toward the fixed engaging portion (12) and the movable engaging portion (20), and presses the pair of protruding portions (4, 5) against the fixed engaging portion (12) and the movable engaging portion (20).
Description
Technical Field
The present invention relates to a circuit breaker for wiring, the back side of which is detachably attached to a mounting rail.
Background
The wiring breaker is mounted on a mounting rail fixed to a ground surface of a distribution board, for example, when the wiring breaker is installed in the distribution board. As the mounting rail, a metal rail such as an iec (international Electrotechnical commission) rail is used. IEC tracks are also known as DIN (Deutsche Industrie Normen) tracks.
The wiring breaker is provided with a pair of engaging portions that engage with a pair of protruding portions provided on the mounting rail. For example, patent document 1 discloses a wiring breaker including: an engaging portion that engages with one of the protruding portions in the mounting rail; and a rail holder, the front end of which can be engaged with/disengaged from the other protruding part in the mounting rail.
Patent document 1: japanese laid-open patent publication No. 9-7486
In the wiring breaker described in patent document 1, the rail holder is biased toward the engagement portion by a spring, and a rail holding force, which is a force of holding the mounting rail by the wiring breaker, depends on a load of the spring mounted on the rail holder.
The wiring breaker is required to be slidable on the mounting rail from the viewpoint of workability, and is required not to slide off the mounting rail due to its own weight when the mounting rail is mounted in the vertical direction. However, in the circuit breaker for wiring described in patent document 1, if the rail holding force is selected so as to be slidable on the mounting rail, there is a possibility that the circuit breaker may slip off the mounting rail due to its own weight.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a circuit breaker for wiring, which does not slide off a mounting rail due to its own weight and is slidable on the mounting rail.
In order to solve the above-described problems and achieve the object, a wiring breaker according to the present invention is detachably attached to a mounting rail on a back surface side, and includes a fixed engagement portion, a movable engagement portion, and a pressing plate. The fixed engaging portion engages with one of a pair of protruding portions provided on the mounting rail. The movable engaging portion is engageable with and disengageable from the other of the pair of projecting portions. The pressing plate is biased in a direction toward the fixed engaging portion and the movable engaging portion, and presses the pair of protruding portions against the fixed engaging portion and the movable engaging portion.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, there is an effect that the wiring breaker can be slid on the mounting rail without slipping off the mounting rail due to its own weight.
Drawings
Fig. 1 is a perspective view showing an external appearance of a wiring breaker according to embodiment 1 of the present invention in a state of being mounted on a mounting rail.
Fig. 2 is an exploded perspective view of the wiring breaker according to embodiment 1.
Fig. 3 is a side view of the wiring breaker according to embodiment 1 in a state of being mounted on a mounting rail.
Fig. 4 is a rear view showing a part of the wiring breaker according to embodiment 1 in a state of being mounted on a mounting rail.
Fig. 5 is a diagram for explaining an operation of sliding the wiring breaker according to embodiment 1 on the mounting rail.
Fig. 6 is a diagram showing a relationship between a pressing plate and a pressing spring in the circuit breaker for wiring according to embodiment 2 of the present invention.
Fig. 7 is a diagram showing a relationship between a pressing plate and a leaf spring in the wiring breaker according to embodiment 3 of the present invention.
Fig. 8 is an enlarged view of the area indicated by a frame in fig. 7.
Description of the reference numerals
1. 1A, 1B wiring circuit breaker, 2 mounting rail, 3 base part, 4, 5 extending part, 4a, 4B, 5a, 5B surface, 10A, 10B circuit breaker main body, 11 operating handle, 12 fixed clamping part, 13A, 13B frame, 14 base part, 14a, 15a projecting part, 15 cover part, 17 front surface, 18A, 18B back surface, 20 movable clamping part, 21 main body part, 22 clamping claw, 30A, 30B pressing plate, 31A, 31B, 32a, 32B, 50A, 50B, 51A, 51B recess, 40A, 40B pressing spring, 41A, 41B leaf spring.
Detailed Description
Hereinafter, a wiring breaker according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the present embodiment.
Embodiment 1.
Fig. 1 is a perspective view showing an external appearance of a wiring breaker according to embodiment 1 of the present invention in a state of being mounted on a mounting rail. Fig. 2 is an exploded perspective view of the wiring breaker according to embodiment 1. As shown in fig. 1, the wiring breaker 1 according to embodiment 1 is attached to a mounting rail 2 on the back side.
The mounting rail 2 has: a base part 3 having a U-shaped cross section; and a pair of projecting portions 4, 5 projecting from a pair of end portions in the base portion 3. The mounting rail 2 is a metal rail such as an IEC rail, which is also called a DIN rail.
The wiring breaker 1 is a breaker that protects wiring from overcurrent or short-Circuit current, and is also called mccb (molded Case Circuit breakers). The wiring breaker 1 is detachably mounted on the mounting rail 2 on the rear surface 18 side.
The wiring breaker 1 includes a breaker main body 10, a movable engagement portion 20, and a pressing plate 30. The breaker main body 10 has a structure for breaking an electric circuit when an overcurrent or a short-circuit current is detected, and an operation handle 11 for opening and closing the electric circuit is provided on the front surface 17 side. As shown in fig. 2, the breaker body 10 includes a housing 13 including a base portion 14 and a cover portion 15, and the housing 13 has a structure for interrupting an electric circuit when an overcurrent or a short-circuit current is detected.
The breaker body 10 is provided with a fixed engaging portion 12 on the rear surface 18 side for engaging with the protruding portion 4 of the mounting rail 2. The fixed engaging portion 12 is provided on the rear surface 18 side of the housing 13. The breaker body 10 has a structure in which the movable engaging portion 20 is movably attached to the rear surface 18 side. Specifically, the base portion 14 and the cover portion 15 have a pair of projections 14a and 15a projecting in directions opposite to each other, and the movable engaging portion 20 is movably held by the breaker main body 10 by the projections 14a and 15 a. The movable engaging portion 20 includes a main body portion 21 movably held by the breaker main body 10, and an engaging claw 22 continuous to the main body portion 21, and the engaging claw 22 is engaged with the protruding portion 5 of the mounting rail 2.
The pressing plate 30 is biased in a direction toward the fixed engaging portion 12 and the movable engaging portion 20, and presses the pair of protruding portions 4 and 5 against the fixed engaging portion 12 and the movable engaging portion 20 as shown in fig. 1. Thereby, the wiring breaker 1 is held by the mounting rail 2. The movable engaging portion 20 is movably attached to the breaker main body 10 in a direction opposite to the fixed engaging portion 12. By moving the movable engaging portion 20 in a direction away from the fixed engaging portion 12, the engagement with the protruding portion 5 can be released, and the wiring breaker 1 can be detached from the mounting rail 2. In addition, the movable engaging portion 20 is engaged with the breaker main body 10 in the state shown in fig. 1, and by releasing the engagement, the movable engaging portion 20 can be moved in a direction away from the fixed engaging portion 12.
The movable engaging portion 20 has elasticity. Therefore, in the state shown in fig. 1, the movable engaging portion 20 has an elastic force in a direction toward the fixed engaging portion 12 of the breaker main body 10, and a load is always applied to the fixed engaging portion 12 of the breaker main body 10.
The pressing plate 30 is movably disposed on the breaker main body 10 in a state of being biased by the pressing spring 40. Specifically, one end of the pressing spring 40 is attached to the recess 31 provided on the surface of the pressing plate 30 facing the back surface 18 of the frame 13, and the other end of the pressing spring 40 is attached to the recess 50 provided on the back surface 18 of the frame 13. In a state where the pressing spring 40 is attached between the pressing plate 30 and the base portion 14, the cover portion 15 is attached to the base portion 14, whereby the pressing plate 30 is movably disposed on the breaker main body 10 in a state where it is biased by the pressing spring 40.
Further, if the cover portion 15 is attached to the base portion 14, the pressing plate 30 is sandwiched between the base portion 14 and the cover portion 15, and therefore, the pressing plate 30 does not fall off from the frame body 13 after the base portion 14 is attached to the cover portion 15.
Here, a state in which the wiring breaker 1 is mounted on the mounting rail 2 will be described. Fig. 3 is a side view of the wiring breaker according to embodiment 1 in a state of being mounted on a mounting rail, and fig. 4 is a rear view of a part of the wiring breaker according to embodiment 1 in a state of being mounted on a mounting rail.
As shown in fig. 3 and 4, in a state where the wiring breaker 1 is mounted on the mounting rail 2, one surface 4a of the extension portion 4 of the mounting rail 2 is engaged with the fixed engagement portion 12, and one surface 5a of the extension portion 5 of the mounting rail 2 is engaged with the engagement claw 22 of the movable engagement portion 20. The other surface 4b of the extension portion 4 of the mounting rail 2 and the other surface 5b of the extension portion 5 of the mounting rail 2 are in contact with the pressing plate 30 and pressed by the pressing plate 30 biased by the pressing spring 40.
Therefore, when no external force is applied to the wiring breaker 1, the engagement between the protruding portions 4 and 5 and the fixed engagement portion 12 and the movable engagement portion 20 is maintained by the holding force generated by the pressing spring 40. When the wiring breaker 1 is mounted on the mounting rail 2 mounted vertically in the extending direction, the pressing spring 40 having a holding force that prevents the wiring breaker 1 from sliding off the mounting rail 2 due to its own weight is selected, whereby the wiring breaker 1 can be prevented from sliding off the mounting rail 2 due to its own weight.
Next, an operation of sliding the wiring breaker 1 on the mounting rail 2 will be described. Fig. 5 is a diagram for explaining an operation of sliding the wiring breaker according to embodiment 1 on the mounting rail.
When the wiring breaker 1 mounted on the mounting rail 2 is slid in the extending direction of the mounting rail 2, first, the front surface 17 of the wiring breaker 1 mounted on the mounting rail 2 is pressed against the mounting rail 2. Thereby, as shown in fig. 5, the pressing plate 30 is pressed by the mounting rail 2, and the pressing spring 40 mounted to the pressing plate 30 contracts.
Therefore, the mounting rail 2 moves toward the front surface 17 of the wiring breaker 1, and the pair of protruding portions 4 and 5 of the mounting rail 2 are separated from the fixed engaging portion 12 and the movable engaging portion 20. This releases the engagement between the protruding portions 4 and 5 and the fixed engagement portion 12 and the movable engagement portion 20, and the wiring breaker 1 can be easily slid along the mounting rail 2.
As described above, when an external force is not applied to the wiring breaker 1, a load in a direction parallel to the mounting rail 2 and a load in a direction perpendicular to the mounting rail 2 are applied to the mounting rail 2, and the wiring breaker 1 is fixed to the mounting rail 2. Therefore, the wiring breaker 1 can be prevented from slipping off the mounting rail 2 due to its own weight. Further, by pressing the front surface 17 of the wiring breaker 1 in the direction perpendicular to the mounting rail 2, the load of the mounting rail 2 in the parallel direction is released. Therefore, in the wiring breaker 1, by pressing the wiring breaker 1 toward the mounting rail 2, the holding force of the wiring breaker 1 with respect to the mounting rail 2 can be adjusted, and the wiring breaker 1 can be easily slid on the mounting rail 2 at a desired timing.
As described above, the wiring breaker 1 according to embodiment 1 is a wiring breaker having the rear surface 18 side detachably attached to the mounting rail 2, and includes the fixed engagement portion 12, the movable engagement portion 20, and the pressing plate 30. The fixed engaging portion 12 engages with one of the pair of protruding portions 4, 5 provided on the mounting rail 2. The movable engaging portion 20 is engageable with and disengageably engageable with the other projecting portion 5 of the pair of projecting portions 4, 5. The pressing plate 30 is biased in a direction toward the fixed engaging portion 12 and the movable engaging portion 20, and presses the pair of protruding portions 4 and 5 against the fixed engaging portion 12 and the movable engaging portion 20. Accordingly, even when the wiring breaker 1 is mounted on the mounting rail 2 mounted in the vertical direction, the wiring breaker 1 does not slide off the mounting rail 2 due to its own weight, and can easily slide on the mounting rail 2 by pressing the wiring breaker 1.
Further, since the pressing plate 30 is biased by the pressing spring 40, the wiring breaker 1 does not have a complicated structure, and the wiring breaker 1 can have a holding force that can be adjusted with respect to the mounting rail 2.
Fig. 6 is a diagram showing a relationship between a pressing plate and a pressing spring in the circuit breaker for wiring according to embodiment 2 of the present invention. As shown in fig. 6, in the pressing plate 30A of the wiring breaker 1A according to embodiment 2, a recess 31A and a recess 31b are formed at a position close to the fixed engaging portion 12 and a position close to the movable engaging portion 20 in the longitudinal direction of the pressing plate 30A. Recesses 50a and 50b are formed in the rear surface 18A of the frame 13A of the wiring breaker 1A.
The breaker main body 10A differs from the breaker main body 10 in that 2 recesses 50A and 50b are formed instead of the recess 50. The pressing plate 30A is different from the pressing plate 30 in that 2 recesses 31a and 31b are formed instead of the recess 31.
One end of the pressing spring 40A is attached to the recess 31a of the pressing plate 30A, and the other end is attached to the recess 50A of the frame 13A. One end of the pressing spring 40b is attached to the recess 31b of the pressing plate 30A, and the other end is attached to the recess 50b of the frame 13A. Thereby, the pressing plate 30A is biased in the direction toward the fixed engaging portion 12 and the movable engaging portion 20 by the 2 pressing springs 40A and 40 b.
As described above, in the wiring breaker 1A according to embodiment 2, the pressing plate 30A is biased in the direction toward the fixed engagement portion 12 and the movable engagement portion 20 by the 2 pressing springs 40A and 40 b. The pressing spring 40a is disposed at a position close to the fixed engaging portion 12, and the pressing spring 40b is disposed at a position close to the movable engaging portion 20. Therefore, when the front surface 17 of the wiring breaker 1A is pressed against the mounting rail 2, the pressing plate 30A can be prevented from being inclined. In the example shown in fig. 6, the number of the pressing springs is 2, but the number of the pressing springs may be 3 or more.
As described above, in the wiring breaker 1A according to embodiment 2, since the pressing plate 30A is biased by the plurality of pressing springs 40A and 40b, the pressing plate 30A can be prevented from being inclined when the wiring breaker 1A is pressed. Therefore, when the front surface 17 of the wiring breaker 1A is pressed against the mounting rail 2, it is possible to suppress a state in which one of the fixed engaging portion 12 and the movable engaging portion 20 is engaged with one of the pair of protruding portions 4 and 5, and to slide the wiring breaker 1A along the mounting rail 2 with high accuracy.
Fig. 7 is a diagram showing a relationship between a pressing plate and a leaf spring in the wiring breaker according to embodiment 3 of the present invention. Fig. 8 is an enlarged view of the area indicated by a frame in fig. 7. As shown in fig. 7 and 8, in the pressing plate 30B of the wiring breaker 1B according to embodiment 3, recesses 32a and 32B are formed at positions close to the fixed engaging portion 12 and at positions close to the movable engaging portion 20 in the longitudinal direction of the pressing plate 30B. In addition, recesses 51a and 51B are formed in the rear surface 18B of the frame 13B in the wiring breaker 1B.
The breaker body 10B is different from the breaker body 10 in that recesses 51a and 51B are formed instead of the recess 50. The pressing plate 30B is different from the pressing plate 30 in that recesses 32a and 32B are formed instead of the recess 31.
One end of the plate spring 41a is attached to the recess 32a of the pressing plate 30B, and the other end is attached to the recess 51a of the frame 13B. One end of the plate spring 41B is attached to the recess 32B of the pressing plate 30B, and the other end is attached to the recess 51B of the frame 13B. Thereby, the pressing plate 30B is biased in the direction toward the fixed engaging portion 12 and the movable engaging portion 20 by the 2 plate springs 41a and 41B.
As described above, in the wiring breaker 1B according to embodiment 3, the pressing plate 30B is biased in the direction toward the fixed engagement portion 12 and the movable engagement portion 20 by the 2 plate springs 41a and 41B. The plate spring 41a is disposed at a position close to the fixed engaging portion 12, and the plate spring 41b is disposed at a position close to the movable engaging portion 20. Therefore, when the front surface 17 of the wiring breaker 1B is pressed against the mounting rail 2, the pressing plate 30B can be prevented from being inclined. In the example shown in fig. 7 and 8, the number of leaf springs is 2, but the number of leaf springs may be 3 or more.
As described above, in the wiring breaker 1B according to embodiment 3, since the pressing plate 30B is biased by the plurality of leaf springs 41a and 41B, the pressing plate 30B can be prevented from being inclined when the wiring breaker 1B is pressed. Therefore, when the front surface 17 of the wiring breaker 1B is pressed against the mounting rail 2, it is possible to suppress a state in which one of the fixed engaging portion 12 and the movable engaging portion 20 is engaged with one of the pair of protruding portions 4 and 5, and to slide the wiring breaker 1B along the mounting rail 2 with high accuracy.
The configuration described in the above embodiment is an example of the content of the present invention, and may be combined with other known techniques, and a part of the configuration may be omitted or modified without departing from the scope of the present invention.
Claims (3)
1. A circuit breaker for wiring, the back side of which can be detachably mounted on a mounting rail,
the circuit breaker for wiring is characterized by comprising:
a fixed engaging portion that engages with one of a pair of protruding portions provided on the mounting rail;
a movable engaging portion that is engageable with and disengageably engageable with the other of the pair of protruding portions; and
and a pressing plate that is biased in a direction toward the fixed engaging portion and the movable engaging portion and presses the pair of protruding portions against the fixed engaging portion and the movable engaging portion.
2. The wiring circuit breaker according to claim 1,
the pressing plate is provided with more than or equal to 1 pressing spring for applying force to the pressing plate.
3. The wiring circuit breaker according to claim 1,
the pressing plate is provided with a plurality of plate springs for applying force to the pressing plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-248317 | 2018-12-28 | ||
| JP2018248317A JP2020107580A (en) | 2018-12-28 | 2018-12-28 | Wiring circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111383865A true CN111383865A (en) | 2020-07-07 |
Family
ID=71216919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911335924.6A Withdrawn CN111383865A (en) | 2018-12-28 | 2019-12-23 | Circuit breaker for wiring |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2020107580A (en) |
| CN (1) | CN111383865A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08149615A (en) * | 1994-11-18 | 1996-06-07 | Kawamura Electric Inc | Equipment fitting panel |
| US20070115089A1 (en) * | 2005-11-21 | 2007-05-24 | Anand Krishnamurthy | Thermal circuit breaker |
| JP2007220383A (en) * | 2006-02-15 | 2007-08-30 | Fuji Electric Fa Components & Systems Co Ltd | Rail mounting structure of electric equipment |
| CN103140911A (en) * | 2010-09-21 | 2013-06-05 | 松下电器产业株式会社 | Circuit breaker |
| CN107293454A (en) * | 2016-04-13 | 2017-10-24 | 富士电机机器制御株式会社 | Circuit-breaker |
-
2018
- 2018-12-28 JP JP2018248317A patent/JP2020107580A/en active Pending
-
2019
- 2019-12-23 CN CN201911335924.6A patent/CN111383865A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08149615A (en) * | 1994-11-18 | 1996-06-07 | Kawamura Electric Inc | Equipment fitting panel |
| US20070115089A1 (en) * | 2005-11-21 | 2007-05-24 | Anand Krishnamurthy | Thermal circuit breaker |
| JP2007220383A (en) * | 2006-02-15 | 2007-08-30 | Fuji Electric Fa Components & Systems Co Ltd | Rail mounting structure of electric equipment |
| CN103140911A (en) * | 2010-09-21 | 2013-06-05 | 松下电器产业株式会社 | Circuit breaker |
| CN107293454A (en) * | 2016-04-13 | 2017-10-24 | 富士电机机器制御株式会社 | Circuit-breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020107580A (en) | 2020-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200707 |
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| WW01 | Invention patent application withdrawn after publication |