CN111755289A - Terminal cover and opening/closing device unit - Google Patents
Terminal cover and opening/closing device unit Download PDFInfo
- Publication number
- CN111755289A CN111755289A CN202010200022.8A CN202010200022A CN111755289A CN 111755289 A CN111755289 A CN 111755289A CN 202010200022 A CN202010200022 A CN 202010200022A CN 111755289 A CN111755289 A CN 111755289A
- Authority
- CN
- China
- Prior art keywords
- opening
- terminal
- electric wire
- closing device
- cover
- 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.)
- Granted
Links
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 description 12
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000002452 interceptive effect Effects 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
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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
Landscapes
- Breakers (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The invention provides a terminal cover capable of more reliably preventing a tool or the like from entering a terminal part of an opening and closing device. The terminal cover (20) has: a cover main body (21) which is provided in the opening/closing device (10), covers a terminal mounting section connected to the electric wire (50), and has an opening (21d) through which the electric wire (50) passes; and a hard resin baffle part (22) which closes the gap between the opening (21d) and the wire (50).
Description
Technical Field
The present invention relates to a terminal cover for covering a terminal portion of an opening/closing device connected to an electric wire, and an opening/closing device unit.
Background
Conventionally, a terminal cover for covering a terminal portion of an opening/closing device is known. The terminal of the opening/closing device is connected to a terminal provided at an end of the electric wire. The terminal cover covers a terminal portion to which an electric wire is connected. The terminal cover is formed with an opening through which the electric wire passes. There is a possibility that various thick and thin wires may be connected to the terminal portion of the opening/closing device. The opening of the terminal cover is formed in such a size that a gap is formed with the electric wire.
In order to prevent a tool, a finger, or the like from entering through a gap between the opening of the terminal cover and the electric wire and coming into contact with the terminal portion, patent document 1 discloses a structure in which a flexible soft resin-made protective cover piece is provided in the opening of the terminal cover.
Patent document 1: japanese laid-open patent publication No. 2012 and 79586
However, since the flexible soft resin protective cover sheet is pushed open by the electric wire and deformed, a gap may be left between the side of the electric wire and the opening, and the entry of a tool or the like may not be prevented. Further, the flexible soft resin cover sheet is easily deformed if a force is applied thereto, and therefore, the flexible soft resin cover sheet is pressed by a tool or the like entering through the gap and deformed, and thus, the tool or the like may not be completely prevented from entering.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to obtain a terminal cover capable of more reliably preventing a tool or the like from entering a terminal portion of an opening/closing device.
In order to solve the above problems and achieve the object, a terminal cover according to the present invention includes: a cover main body which is provided in the opening/closing device, covers a terminal mounting portion connected to the electric wire, and has an opening portion through which the electric wire passes; and a hard resin baffle part for closing the gap between the opening and the wire.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, there is an effect that a terminal cover capable of more reliably preventing a tool or the like from entering a terminal portion of an opening/closing device can be obtained.
Drawings
Fig. 1 is a perspective view of an opening/closing device unit according to embodiment 1 of the present invention.
Fig. 2 is a perspective view of the opening/closing device according to embodiment 1.
Fig. 3 is a plan view of the opening/closing device according to embodiment 1.
Fig. 4 is a sectional view taken along the line IV-IV shown in fig. 3.
Fig. 5 is a perspective view of the opening/closing device unit according to embodiment 1, and is a view showing a state in which one of the terminal covers is removed.
Fig. 6 is a perspective view of the terminal cover according to embodiment 1.
Fig. 7 is a perspective view of the cover main body in embodiment 1.
Fig. 8 is a perspective view of the cover main body shown in fig. 7, as viewed from the back side.
Fig. 9 is an enlarged view of a portion a shown in fig. 8.
Fig. 10 is a front view of the baffle portion in embodiment 1.
Fig. 11 is a perspective view of the baffle unit in embodiment 1.
Fig. 12 is a front view of the terminal cover according to embodiment 1.
Fig. 13 is a cross-sectional view taken along line XIII-XIII shown in fig. 12.
Description of the reference numerals
10 shutter, 10a main surface, 11 terminal portion, 11a terminal mounting portion, 11b inter-electrode partition wall, 11c terminal portion mounting surface, 12 shutter operation portion, 20 terminal cover, 21 cover main body, 21a opposite wall, 21b outer side wall, 21c different inter-electrode partition wall, 21d outlet, 21e groove, 21f engaging portion, 21g end surface, 21h 1 side, 22 baffle portion, 22a front surface, 22b notch, 22c boss, 22d opposite side, 30 shutter unit, 31 screw, 32 rotation axis, 50 wire, 50a terminal.
Detailed Description
Hereinafter, a terminal cover and an opening/closing device unit 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 of an opening/closing device unit according to embodiment 1 of the present invention. The opening/closing device unit 30 includes an opening/closing device 10 and a terminal cover 20.
Fig. 2 is a perspective view of the opening/closing device according to embodiment 1. Fig. 3 is a plan view of the opening/closing device according to embodiment 1. Fig. 4 is a sectional view taken along the line IV-IV shown in fig. 3. The opening/closing device 10 is provided with a terminal portion 11 for connecting an electric wire 50. The opening/closing device 10 has a rectangular parallelepiped shape. In a plan view shown in fig. 3, a plurality of terminal portions 11 are provided in a row on one side of the opening/closing device 10 and on the other side opposite thereto.
The terminal portion 11 is provided with a terminal portion mounting surface 11c for mounting the terminal mounting portion 11 a. The inter-electrode partition walls 11b are formed between the terminal portions 11. The wire 50 is connected to the terminal mounting portion 11a by using the screw 31. More specifically, the terminal 50a attached to the tip of the electric wire 50 is fixed to the terminal attachment portion 11a using the screw 31. The terminal portion installation surface 11c is a surface parallel to the direction in which the electric wire 50 extends, that is, the direction indicated by the arrow X.
An opening/closing operation portion 12 is provided on the main surface 10a of the opening/closing device 10. By operating the opening/closing operation portion 12, the electric wire 50 connected to the terminal portion 11 on one side of the opening/closing device 10 can be electrically connected to or disconnected from the electric wire 50 connected to the other side. In the opening/closing device 10, when an overcurrent flows between the electric wire 50 connected to the terminal portion 11 on one side of the opening/closing device 10 and the electric wire 50 connected to the other side, the electric connection is also cut off.
Fig. 5 is a perspective view showing the opening/closing device unit according to embodiment 1, and is a view showing a state in which one of the terminal covers is removed. Fig. 6 is a perspective view of the terminal cover according to embodiment 1. The terminal cover 20 has a cover main body 21 and a shutter portion 22. The terminal cover 20 covers the terminal portion 11 so that the terminal 50a and the terminal mounting portion 11a are not exposed to the outside in a state where the electric wire 50 is connected to the terminal mounting portion 11 a.
Fig. 7 is a perspective view of the cover main body in embodiment 1. Fig. 8 is a perspective view of the cover main body shown in fig. 7, as viewed from the back side. The cover main body 21 is formed of a hard resin. The hard resin is, for example, an ABS resin (acrylonitrile butadiene styrene resin).
The cover main body 21 is integrally formed with opposing walls 21a, an outer side wall 21b, and different inter-electrode partition walls 21 c. The opposing wall 21a is parallel to the terminal mounting surface 11c of the opening/closing device 10. The outer side wall 21b and the inter-electrode partition wall 21c are side walls extending from the opposing wall 21a toward the terminal portion installation surface 11c and covering both sides of the electric wire 50.
Fig. 9 is an enlarged view of a portion a shown in fig. 8. The engagement portions 21f are formed on the outer side wall 21b and the different inter-electrode partition walls 21 c. The engaging portion 21f is a recess formed in a surface of the outer wall 21b facing the different inter-electrode partition walls 21c or a surface of the different inter-electrode partition walls 21c facing each other. The projection formed on the shutter portion 22 is fitted into the engagement portion 21 f. The engaging portion 21f may be formed as a projection and fitted into a recess formed in the shutter portion 22. A groove 21e is formed in the outer side wall 21b and the inter-electrode partition wall 21c, and the groove 21e is used for releasing a pin used for molding the engaging portion 21f when the cover body 21 is molded after molding.
The cover main body 21 is provided with an end surface 21g, and the end surface 21g closes a region surrounded by the opposing wall 21a, the outer wall 21b, and the inter-electrode partition walls 21c, or a region surrounded by the opposing wall 21a and the pair of inter-electrode partition walls 21 c.
An outlet 21d serving as an opening is formed in the end face 21 g. The electric wire 50 connected to the terminal mounting portion 11a passes through the outlet 21 d. The outlet 21d is a recess recessed toward the opposing wall 21a from the 1 side 21h on the opposite side to the opposing wall 21a side in the end face 21 g. According to this shape of the outlet 21d, if the terminal cover 20 is attached to the opening/closing device 10 from the 1-side 21h side, the cover main body 21 and the electric wire 50 can be prevented from interfering with each other.
Fig. 10 is a front view of the baffle portion in embodiment 1. Fig. 11 is a perspective view of the baffle unit in embodiment 1. The baffle portion 22 is formed of a hard resin. The hard resin is, for example, ABS resin.
The baffle portion 22 has a front surface 22a for preventing tools, fingers, and the like from entering the terminal portion 11. A cutout 22b is provided in an opposite side 22d of the front surface 22a, which is the side opposite to the electric wire 50, and the cutout 22b is formed so as to be recessed in a direction away from the electric wire 50. The slits 22b have a shape in which the interval becomes narrower as the distance from the electric wire 50 increases. The baffle portion 22 is formed with a projection 22c inserted into the engagement portion 21f of the cover main body 21.
Fig. 12 is a front view of the terminal cover according to embodiment 1. Fig. 13 is a cross-sectional view taken along line XIII-XIII shown in fig. 12. By inserting the projection 22c of the flap 22 into the engagement portion 21f of the cover main body 21, the flap 22 is supported rotatably about the rotation shaft 32 as shown in fig. 12 and 13. The rotation shaft 32 is perpendicular to the direction in which the electric wire 50 passing through the outlet 21d extends and is parallel to the opposing wall 21 a.
According to the switchgear unit 30 described above, if the terminal cover 20 is attached so as to cover the terminal portion 11 of the switchgear 10, the shutter portion 22 rotates according to the thickness of the electric wire 50, and the gap between the outlet 21d and the electric wire 50 is closed. In particular, the gap on the side of the wall 21a facing the wire 50 is closed. The notch 22b is formed in the shutter portion 22, thereby closing the gap on the outer wall 21b side and the gap on the inter-electrode partition wall 21c side with respect to the electric wire 50. The flap 22 rotates in a direction contacting the electric wire 50 by its own weight. As described above, since the gap formed between the outlet 21d and the electric wire 50 is substantially closed, it is possible to prevent the tool or the like from entering the terminal mounting portion 11 a. Further, since the shutter 22 rotates to close the gap according to the thickness of the electric wire 50 by simply attaching the terminal cover 20 to the opening/closing device 10, the workability of the operation of covering the terminal portion 11 to close the gap can be improved.
Further, since the shutter portion 22 is formed of a hard resin, it is not easily deformed even when pressed by a tool or the like, and thus it is possible to more reliably prevent the tool or the like from entering the terminal attachment portion 11 a.
Although the present invention has been described in terms of what is presently considered to be the most practical and preferred embodiment, the opening/closing device 10 is merely an example and is not limited thereto. Any device may be used as long as it has a terminal for wiring, such as a wattmeter measuring instrument or a wiring breaker.
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 (4)
1. A terminal cover, comprising:
a cover main body which is provided in the opening/closing device, covers a terminal mounting portion connected to an electric wire, and has an opening portion through which the electric wire passes; and
and a hard resin barrier portion that closes the gap between the opening and the wire.
2. The terminal cover according to claim 1,
the baffle portion is rotatably supported by the cover main body.
3. The terminal cover according to claim 1 or 2,
a notch is provided on an edge of the shutter portion opposite to the electric wire, the notch being formed by being recessed in a direction away from the electric wire,
the notches are shaped such that the distance between the notches becomes narrower as the notches proceed in a direction away from the electric wire.
4. An opening/closing device unit, comprising:
the terminal cover of any one of claims 1 to 3; and
the opening and closing device of the terminal installation part is covered by the terminal cover,
the opening/closing device has a terminal portion mounting surface provided with the terminal mounting portion in parallel with a direction in which the electric wire passing through the opening portion extends,
the terminal cover has: an opposing wall opposing the terminal portion mounting surface; a pair of side walls extending from the opposite walls toward the terminal portion mounting surface and covering both sides of the electric wire; and an end face which closes a region surrounded by the opposing walls and the pair of side walls,
the opening is a recess formed in the end surface and recessed toward the opposing wall from 1 side of the end surface that is opposite to the opposing wall side,
the baffle portion is rotatably supported by the cover main body around a rotation axis that is perpendicular to a direction in which the electric wire passing through the opening portion extends and that is parallel to the opposing wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-060922 | 2019-03-27 | ||
| JP2019060922A JP7101633B2 (en) | 2019-03-27 | 2019-03-27 | Terminal cover and switchgear unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111755289A true CN111755289A (en) | 2020-10-09 |
| CN111755289B CN111755289B (en) | 2024-04-02 |
Family
ID=72639723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010200022.8A Active CN111755289B (en) | 2019-03-27 | 2020-03-20 | Terminal cover and opening/closing device unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7101633B2 (en) |
| CN (1) | CN111755289B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593983A (en) * | 2021-07-30 | 2021-11-02 | 山西辉煌腾达科技有限公司 | Reversible KBO control and protection switch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4295141B2 (en) * | 2004-03-12 | 2009-07-15 | 株式会社吉野工作所 | Work heating apparatus and work heating method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498240U (en) * | 1991-01-19 | 1992-08-25 | ||
| JPH0672143U (en) * | 1993-03-23 | 1994-10-07 | 河村電器産業株式会社 | Circuit breaker terminal cover |
| JPH11167854A (en) * | 1997-12-04 | 1999-06-22 | Mitsubishi Electric Corp | Electromagnetic contactor provided with terminal cover |
| KR20030039215A (en) * | 2001-11-12 | 2003-05-17 | 엘지산전 주식회사 | terminal cover at Circuit Breaker |
| CN205140888U (en) * | 2015-10-20 | 2016-04-06 | 乐清市海达胶塑配件厂 | Circuit breaker housing and circuit breaker |
| KR101868322B1 (en) * | 2017-01-31 | 2018-06-15 | 김성복 | the terminal cover of a circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2505514Y2 (en) * | 1991-12-25 | 1996-07-31 | 川重鉄道車両エンジニアリング株式会社 | Duct bushing for vehicle |
-
2019
- 2019-03-27 JP JP2019060922A patent/JP7101633B2/en active Active
-
2020
- 2020-03-20 CN CN202010200022.8A patent/CN111755289B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498240U (en) * | 1991-01-19 | 1992-08-25 | ||
| JPH0672143U (en) * | 1993-03-23 | 1994-10-07 | 河村電器産業株式会社 | Circuit breaker terminal cover |
| JPH11167854A (en) * | 1997-12-04 | 1999-06-22 | Mitsubishi Electric Corp | Electromagnetic contactor provided with terminal cover |
| KR20030039215A (en) * | 2001-11-12 | 2003-05-17 | 엘지산전 주식회사 | terminal cover at Circuit Breaker |
| CN205140888U (en) * | 2015-10-20 | 2016-04-06 | 乐清市海达胶塑配件厂 | Circuit breaker housing and circuit breaker |
| KR101868322B1 (en) * | 2017-01-31 | 2018-06-15 | 김성복 | the terminal cover of a circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593983A (en) * | 2021-07-30 | 2021-11-02 | 山西辉煌腾达科技有限公司 | Reversible KBO control and protection switch |
| CN113593983B (en) * | 2021-07-30 | 2023-12-08 | 国网安徽省电力有限公司亳州供电公司 | Reversible KBO control and protection switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020161381A (en) | 2020-10-01 |
| JP7101633B2 (en) | 2022-07-15 |
| CN111755289B (en) | 2024-04-02 |
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