CN107424868A - D.C. contactor with decompression protection mechanism - Google Patents
D.C. contactor with decompression protection mechanism Download PDFInfo
- Publication number
- CN107424868A CN107424868A CN201710438699.3A CN201710438699A CN107424868A CN 107424868 A CN107424868 A CN 107424868A CN 201710438699 A CN201710438699 A CN 201710438699A CN 107424868 A CN107424868 A CN 107424868A
- Authority
- CN
- China
- Prior art keywords
- contactor
- seal casinghousing
- push rod
- contacting plate
- stationary contacts
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
Abstract
The invention discloses a kind of D.C. contactor with decompression protection mechanism; including seal casinghousing; two stationary contacts being arranged side by side, the moving contacting plate and a push rod being vertically arranged of an activity are installed, push rod can drive moving contacting plate to connect or disconnect with two stationary contacts respectively in the inner chamber of seal casinghousing；Positioning is socketed with a base housing outside the bottom of seal casinghousing, base housing is encircled into a sealed chamber together with the bottom outer wall of seal casinghousing, gas medium is filled with sealed chamber, and sealed chamber can also be with the intracavity inter-connection of seal casinghousing, so while arc-extinguishing medium components unchanged is ensured, significantly reduce the air pressure inside of D.C. contactor, so that electric arc smoothly extinguishes, so as to ensure that the final disconnection of D.C. contactor, improve the ability of D.C. contactor cut-out abnormal load, emphasis is reduction of the risk that D.C. contactor damages under abnormal load, the security of D.C. contactor and corollary apparatus is ensured.
Description
Technical field
The present invention relates to contactor technical field, specifically provides a kind of D.C. contactor with decompression protection mechanism.
Background technology
In order to lift the load capacity of D.C. contactor, the conventional treatment mode of manufacturer is all to employ sealing structure to set
Meter, includes ceramic seal and sealant pouring and sealing.However, just because of D.C. contactor structure is designed into a seal cavity, when
When load abnormal or dysfunction cause D.C. contactor not disconnect normally, electric arc sustained combustion between contact, gas medium by
Thermal expansion and then influence seal cavity internal pressure and gradually increase, and after pressure increases to a certain degree, D.C. contactor knot
Structure can not bear and burst damage, so as to influence the normal use of corollary apparatus.
In view of this, it is special to propose the present invention.
The content of the invention
In order to overcome drawbacks described above, the invention provides a kind of D.C. contactor with decompression protection mechanism, improve
D.C. contactor cuts off the ability of abnormal load, has ensured the security of D.C. contactor and corollary apparatus.
The present invention in order to solve its technical problem used by technical scheme be：A kind of direct current with decompression protection mechanism
Contactor, including seal casinghousing, be provided with the inner chamber of the seal casinghousing two stationary contacts being arranged side by side, an activity it is dynamic
Contact chip and a push rod being vertically arranged, the moving contacting plate and two stationary contacts are vertically positioned opposite respectively, described
The upside of push rod is connected with the moving contacting plate, and the push rod can also drive the moving contacting plate respectively with described in two
Stationary contact connects, or drives the moving contacting plate to be disconnected respectively with two stationary contacts；In the bottom of the seal casinghousing
Outer positioning is socketed with a base housing, and the base housing is encircled into an annular seal space together with the bottom outer wall of the seal casinghousing
Room, gas medium is filled with the sealed chamber, and the sealed chamber can also be connected with the inner chamber of the seal casinghousing
It is logical.
As a further improvement on the present invention, realize that the sealed chamber can also be connected with the inner chamber of the seal casinghousing
Logical structure is：Run through on the bottom wall of the seal casinghousing and offer an openings, and position and set on the openings
There is a metallic membrane that can close the openings, the compressive resistance of the metallic membrane is less than the limit of the D.C. contactor
Air pressure, and the sealed chamber can use the situation that the metallic membrane ruptures under the limit air pressure, so with institute
State the intracavity inter-connection of seal casinghousing.
As a further improvement on the present invention, the push rod is the hollow structure that upper and lower ends are in open-like shape, and institute
The lower open mouth end for stating push rod is also corresponding with the openings.
As a further improvement on the present invention, realize the push rod can also drive the moving contacting plate respectively with two institutes
Stationary contact connection is stated, or the structure for driving the moving contacting plate to be disconnected respectively with two stationary contacts is：It is additionally provided with driving
Coil, dynamic iron core and back-moving spring, wherein, the driving coil positioning is arranged at the inner chamber bottom of the seal casinghousing, institute
State dynamic iron core to be movably placed in the space that the driving coil surrounds, the downside tight fit of the push rod is placed through the dynamic iron core
In, the back-moving spring is sheathed on outside the bottom of the push rod；When the driving coil is powered, the driving coil produces magnetic
Power causes the dynamic iron core to drive the push rod to move straight up, and and then cause the moving contacting plate respectively with described in two
Stationary contact connects；When the driving coil powers off, motion is multiple straight down in the presence of the back-moving spring for the push rod
Position, and and then the moving contacting plate is disconnected with two stationary contacts respectively.
The beneficial effects of the invention are as follows：It is equivalent by by the intracavity inter-connection of the sealed chamber and the seal casinghousing
In increasing arc extinguishing space, so while arc-extinguishing medium components unchanged is ensured, the interior of D.C. contactor is significantly reduced
Portion's air pressure so that electric arc smoothly extinguishes, and so as to ensure that the final disconnection of D.C. contactor, it is different to improve D.C. contactor cut-out
The ability often loaded, emphasis are reduction of the risk that D.C. contactor damages under abnormal load, have ensured D.C. contactor and matched somebody with somebody
The security of covering device.In addition, using the intracavity inter-connection of the sealed chamber and the seal casinghousing, contact week is also reduced
Medium temperature is enclosed, has further ensured the security of D.C. contactor and corollary apparatus.
Brief description of the drawings
Fig. 1 is the cross-sectional view of D.C. contactor of the present invention；
Fig. 2 is the mplifying structure schematic diagram in A portions shown in Fig. 1.
With reference to accompanying drawing, make the following instructions：
1 --- seal casinghousing 2 --- stationary contact
3 --- moving contacting plate 4 --- push rods
5 --- base housing 6 --- metallic membranes
10 --- openings
Embodiment
Referring to figure to a preferred embodiment of the present invention will be described in detail.
Embodiment 1：
Refer to shown in accompanying drawing 1, it is the cross-sectional view of D.C. contactor of the present invention.Described direct current connects
Tentaculum includes seal casinghousing 1, and the dynamic of the activity of two stationary contacts being arranged side by side 2, one is provided with the inner chamber of the seal casinghousing 1
The push rod 4 that contact chip 3 and one is vertically arranged, the moving contacting plate 3 and two stationary contacts 2 are vertically positioned opposite respectively,
The upside of the push rod 4 is connected with the moving contacting plate 3, and the push rod 4 can also drive the moving contacting plate 3 respectively with
Two stationary contacts 2 connect, or drive the moving contacting plate 3 to be disconnected respectively with two stationary contacts 2；Particularly, exist
Positioning is socketed with a base housing 5, the bottom of the base housing 5 and the seal casinghousing 1 outside the bottom of the seal casinghousing 1
Outer wall is encircled into a sealed chamber together, and gas medium is filled with the sealed chamber and (is preferably used and the seal casinghousing
Identical gas medium in inner chamber, such as hydrogen), and the sealed chamber can also be with the intracavity inter-connection of the seal casinghousing 1.
Compared to prior art, by by the intracavity inter-connection of the sealed chamber and seal casinghousing, being equivalent to and increasing arc extinguishing space,
So while arc-extinguishing medium components unchanged is ensured, the air pressure inside of D.C. contactor is significantly reduced so that electric arc is suitable
Profit is extinguished, and so as to ensure that the final disconnection of D.C. contactor, improves the ability of D.C. contactor cut-out abnormal load, emphasis
The risk that D.C. contactor damages under abnormal load is reduction of, has ensured the security of D.C. contactor and corollary apparatus.This
Outside, the intracavity inter-connection of the sealed chamber and the seal casinghousing is used, also reduces contact ambient temperature, further
The security of D.C. contactor and corollary apparatus is ensured.
In the present embodiment, it is preferred that realize that the sealed chamber can also be with the intracavity inter-connection of the seal casinghousing 1
Structure be：Run through on the bottom wall of the seal casinghousing 1 and offer an openings 10, and position and set on the openings 10
The metallic membrane 6 of the openings can be closed by being equipped with one, and the compressive resistance of the metallic membrane 6 is less than the D.C. contactor
Limit air pressure, and the sealed chamber can use the situation that the metallic membrane 6 ruptures under the limit air pressure, and then
With the intracavity inter-connection (specifically see shown in accompanying drawing 2) of the seal casinghousing 1.
It is further preferred that the push rod 4 is the hollow structure that upper and lower ends are in open-like shape, and the push rod 4
Lower open mouth end is also corresponding with the openings 10.
In the present embodiment, it is preferred that realize the push rod 4 can also drive the moving contacting plate 3 respectively with two institutes
State stationary contact 2 to connect, or the structure for driving the moving contacting plate 3 to disconnect with two stationary contacts 2 respectively is：It is additionally provided with drive
Moving winding, dynamic iron core and back-moving spring, wherein, the driving coil positioning is arranged at the inner chamber bottom of the seal casinghousing,
The dynamic iron core is movably placed in the space that the driving coil surrounds, and the downside tight fit of the push rod 4 is placed through described move
In iron core, the back-moving spring is sheathed on outside the bottom of the push rod 4；When the driving coil is powered, the driving coil
Producing magnetic force causes the dynamic iron core to drive the push rod 4 to move straight up, and and then cause the moving contacting plate 3 respectively with
Two stationary contacts 2 connect, and the D.C. contactor is in Operating In Persistent Current Mode state；It is described to push away when the driving coil powers off
Bar 4 in the presence of the back-moving spring straight down motion reset, and and then cause the moving contacting plate 3 respectively with two institutes
State stationary contact 2 to disconnect, the D.C. contactor, which is in, disconnects working condition.
The pressure release principle explanation of the D.C. contactor：First, by the seal casinghousing inner chamber of existing D.C. contactor because of nothing
Pressure when method is born its internal pressure and is damaged is defined as the limit air pressure P of D.C. contactormax, by the metal film
The compressive resistance of piece is defined as P, and P<Pmax；When the air pressure in the inner chamber of seal casinghousing 1 gradually increases to P, the metal
Crack damage can occur for diaphragm 6, realize the intracavity inter-connection of the sealed chamber and the seal casinghousing 1, the sealed chamber
Interior gas will be entered in the inner chamber of the seal casinghousing 1 by the openings 10 and the push rod 4.And by by described in
The intracavity inter-connection of sealed chamber and the seal casinghousing 1, is equivalent to and increases arc extinguishing space, so ensure arc-extinguishing medium into
While dividing constant, the air pressure inside of D.C. contactor is significantly reduced so that electric arc smoothly extinguishes, so as to ensure that direct current
The final disconnection of contactor, improves the ability of D.C. contactor cut-out abnormal load, and emphasis is reduction of under abnormal load directly
The risk of contactor damage is flowed, has ensured the safety of D.C. contactor and corollary apparatus.In addition, use the sealed chamber and institute
The intracavity inter-connection of seal casinghousing 1 is stated, also reduces contact ambient temperature, has further ensured D.C. contactor and supporting
The safety of device.
Described above is only the preferred embodiment of the present invention, but is not intended to limit the invention, it is noted that for this
For the those of ordinary skill of technical field, without departing from the technical principles of the invention, some improvement can also be made
And modification, these improvement and modification also should be regarded as within the scope of the present invention.
Claims (4)
1. a kind of D.C. contactor with decompression protection mechanism, including seal casinghousing (1), the inner chamber of the seal casinghousing (1)
In be provided with two stationary contacts being arranged side by side (2), one activity moving contacting plate (3) and a push rod being vertically arranged (4), it is described
Moving contacting plate (3) and two stationary contacts (2) are vertically positioned opposite respectively, and the upside of the push rod (4) connects with described move
Contact (3) is connected, and the push rod (4) can also drive the moving contacting plate (3) to connect respectively with two stationary contacts (2)
It is logical, or drive the moving contacting plate (3) to be disconnected respectively with two stationary contacts (2)；It is characterized in that：In the capsul
Positioned outside the bottom of body (1) and be socketed with a base housing (5), outside the bottom of the base housing (5) and the seal casinghousing (1)
Wall is encircled into a sealed chamber together, gas medium is filled with the sealed chamber, and the sealed chamber can also be with institute
State the intracavity inter-connection of seal casinghousing (1).
2. the D.C. contactor according to claim 1 with decompression protection mechanism, it is characterised in that：Realize the sealing
Chamber can also be with the structure of the intracavity inter-connection of the seal casinghousing (1)：Run through on the bottom wall of the seal casinghousing (1)
Offer an openings (10), and positioning is provided with one and can close the metal film of the openings on the openings (10)
Piece (6), the compressive resistance of the metallic membrane (6) is less than the limit air pressure of the D.C. contactor, and the sealed chamber can
Use the situation that the metallic membrane (6) ruptures under the limit air pressure, so with the inner chamber phase of the seal casinghousing (1)
Connection.
3. the D.C. contactor according to claim 2 with decompression protection mechanism, it is characterised in that：The push rod (4)
For upper and lower ends be in open-like shape hollow structure, and the lower open mouth end of the push rod (4) also with the openings (10) phase
It is corresponding.
4. the D.C. contactor according to claim 1 with decompression protection mechanism, it is characterised in that：Realize the push rod
(4) moving contacting plate (3) can also be driven to be connected respectively with two stationary contacts (2), or drive the moving contacting plate
(3) structure disconnected respectively with two stationary contacts (2) is：Driving coil, dynamic iron core and back-moving spring are additionally provided with, wherein,
The driving coil positioning is arranged at the inner chamber bottom of the seal casinghousing, and the dynamic iron core is movably placed in the driving coil
In the space surrounded, the downside tight fit of the push rod (4) is placed through in the dynamic iron core, and the back-moving spring is sheathed on described
Outside the bottom of push rod (4)；When the driving coil is powered, the driving coil produces magnetic force and causes the dynamic iron core to drive institute
State push rod (4) to move straight up, and and then the moving contacting plate (3) is connected with two stationary contacts (2) respectively；When
During the driving coil power-off, motion resets the push rod (4) straight down in the presence of the back-moving spring, and and then makes
The moving contacting plate (3) is obtained to disconnect with two stationary contacts (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438699.3A CN107424868A (en) | 2017-06-12 | 2017-06-12 | D.C. contactor with decompression protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438699.3A CN107424868A (en) | 2017-06-12 | 2017-06-12 | D.C. contactor with decompression protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107424868A true CN107424868A (en) | 2017-12-01 |
Family
ID=60428209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710438699.3A Pending CN107424868A (en) | 2017-06-12 | 2017-06-12 | D.C. contactor with decompression protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107424868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545622A (en) * | 2018-12-14 | 2019-03-29 | 安徽华成电子科技有限公司 | A kind of device in sealing contact explosion-proof early warning structure of losing heart |
| EP4266341A1 (en) * | 2022-04-19 | 2023-10-25 | Xiamen Hongfa Electric Power Controls Co., Ltd. | Relay with pressure relief assembly for the contact chamber |
Citations (5)
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|---|---|---|---|---|
| CN202094604U (en) * | 2011-05-20 | 2011-12-28 | 浙江省电力公司台州电业局 | Improved protection device for pressure release of transformers |
| JP2014203811A (en) * | 2013-04-10 | 2014-10-27 | 株式会社デンソー | Electromagnetic solenoid device |
| CN204614727U (en) * | 2015-04-15 | 2015-09-02 | 诸暨久城环境科技有限公司 | A kind of pressure adjustable type pressure switch |
| US20160365210A1 (en) * | 2015-06-12 | 2016-12-15 | Tyco Electronics Corporation | Pressure-controlled electrical relay device |
| CN206921754U (en) * | 2017-06-12 | 2018-01-23 | 昆山国力源通新能源科技有限公司 | D.C. contactor with decompression protection mechanism |
-
2017
- 2017-06-12 CN CN201710438699.3A patent/CN107424868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202094604U (en) * | 2011-05-20 | 2011-12-28 | 浙江省电力公司台州电业局 | Improved protection device for pressure release of transformers |
| JP2014203811A (en) * | 2013-04-10 | 2014-10-27 | 株式会社デンソー | Electromagnetic solenoid device |
| CN204614727U (en) * | 2015-04-15 | 2015-09-02 | 诸暨久城环境科技有限公司 | A kind of pressure adjustable type pressure switch |
| US20160365210A1 (en) * | 2015-06-12 | 2016-12-15 | Tyco Electronics Corporation | Pressure-controlled electrical relay device |
| CN206921754U (en) * | 2017-06-12 | 2018-01-23 | 昆山国力源通新能源科技有限公司 | D.C. contactor with decompression protection mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545622A (en) * | 2018-12-14 | 2019-03-29 | 安徽华成电子科技有限公司 | A kind of device in sealing contact explosion-proof early warning structure of losing heart |
| EP4266341A1 (en) * | 2022-04-19 | 2023-10-25 | Xiamen Hongfa Electric Power Controls Co., Ltd. | Relay with pressure relief assembly for the contact chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |