CN102842462B - Electromagnetic contactor - Google Patents
Electromagnetic contactor Download PDFInfo
- Publication number
- CN102842462B CN102842462B CN201110420975.6A CN201110420975A CN102842462B CN 102842462 B CN102842462 B CN 102842462B CN 201110420975 A CN201110420975 A CN 201110420975A CN 102842462 B CN102842462 B CN 102842462B
- Authority
- CN
- China
- Prior art keywords
- housing
- electromagnetic contactor
- cross bar
- gap
- foreign matter
- 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.)
- Expired - Fee Related
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention obtains a kind of electromagnetic contactor that the foreign matter entered from the gap between fixed contact therefor and housing can be carried out sealing up for safekeeping.This electromagnetic contactor (90) is normally arranging under posture, be set to cross bar (22) displacement in the horizontal direction keeping movable contact (23), it has: housing (10), and described cross bar (22) and movable contact (23) are housed in central portion by it; Paired fixed contact therefor (21), it is configured on described housing (10) in the mode clamping described cross bar (22) up and down, and fixes across gap (10b) between this housing (10); And accepting groove, it is formed in the scope relative with described gap (10b) of described cross bar (22), catches the foreign matter (30) fallen from described gap (10b).
Description
Technical field
The present invention relates to and a kind ofly utilize the on/off of electromagnet and circuit carried out to the electromagnetic contactor of switch.
Background technology
Current, disclose a kind of dust guard of electromagnetic contactor, the inner side of its steam vent offered on the extinguishing arc partition wall (covering between longitudinal wall) of explosion chamber's cover (extinguishing arc cover), parallel with extinguishing arc partition wall and invade with extinguishing arc partition wall to be provided with short strip shape foreign matter across appropriate intervals and prevent wall, in the dust guard of this electromagnetic contactor, by invade at foreign matter prevent wall the face relative with extinguishing arc partition wall around with dykes and dams shape around arranging flank, make to be formed as concavity with the opposite face of extinguishing arc partition wall, thus the foreign matter entered from steam vent is caught in this recess, make this foreign matter can not prevent surrounding's landing of wall (such as along with the switch vibration of electromagnetic contactor from foreign matter intrusion, with reference to patent documentation 1).
In addition, disclose a kind of electromagnetic contactor, it has: housing, and it at least has longitudinal wall of 2 fore-and-aft directions, top fixed contact therefor, it is configured in the top between described longitudinal wall, has the fixed contact towards the terminal in described housing front and the configuration of the central portion near between described longitudinal wall, lower stationary contact part, it is configured in the bottom between described longitudinal wall, has the fixed contact towards the terminal in described housing front and the configuration of the central portion near between described longitudinal wall, movable contact, it is configured in the central portion between described longitudinal wall, has the moving contact relatively configured with described upper and lower fixed contact for a pair, and extinguishing arc cover, it has between radiator grille and a pair longitudinal wall and covers, cover described fixed contact and moving contact, this radiator grille covers between described longitudinal wall in described movable contact front, cover between this pair longitudinal wall and protrude from this radiator grille, insert the center side end extending to each terminal of described upper and lower fixed contact therefor between described longitudinal wall, the feature of this electromagnetic contactor is, described longitudinal wall arranges the groove chimeric with the sidepiece covered between described longitudinal wall, till making the leading section covered between described a pair longitudinal wall extend to the inside of the center side end of each terminal of described upper and lower fixed contact therefor, the upper surface covered between described longitudinal wall is provided with inclined plane, its from the sidepiece covered between described longitudinal wall and leading section towards this longitudinal wall between the central portion that covers tilt downwards, if because small foreign matter drops down onto on the upper surface covered between longitudinal wall, then this small foreign matter is moved to the central portion covered between longitudinal wall by inclined plane, even if so between the groove of the sidepiece covered between longitudinal wall and longitudinal wall, and there is minim gap between the leading section covered between the center side end of terminal and longitudinal wall, also small foreign matter will be made to invade in electromagnetic contactor by minim gap by the switch vibration of electromagnetic contactor, reduce the generation of the action failure of contact conducting failure or electromagnet (such as, with reference to patent documentation 2).
Patent documentation 1: Japanese Unexamined Patent Publication 05-002962 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2006-310184 publication
Summary of the invention
But, according to above-mentioned prior art, although the foreign matter invaded from explosion chamber's cover (extinguishing arc cover) can be sealed up for safekeeping, the foreign matter entered cannot be sealed up for safekeeping from the gap between fixed contact therefor and housing.Therefore, there is following problems, namely, entering inner foreign matter causes foreign matter to spread due to the vibration etc. of the switch vibration of electromagnetic contactor or the cross-ventilation produced due to switch, other control appliances, scattering foreign matter is nipped between moving contact and fixed contact near contacts, causes loose contact.
The present invention proposes in view of the above problems, its object is to, obtains a kind of electromagnetic contactor foreign matter entered from the gap between fixed contact therefor and housing can sealed up for safekeeping.In order to solve above-mentioned problem, realizing object, the invention provides a kind of electromagnetic contactor,
It is normally being arranged under posture, is set to keep the cross bar of movable contact to horizontal direction displacement, and it is characterized in that having: housing, described cross bar and movable contact are housed in central portion by it; Paired fixed contact therefor, it configures on the housing in the mode clamping described cross bar up and down, and fixes across gap between this housing; And accepting groove, it is formed in the scope relative with described gap of described cross bar, catches the foreign matter fallen from described gap.
The effect of invention
According to the present invention, realize following effect, that is, the foreign matter entered from the gap between fixed contact therefor and housing can be sealed up for safekeeping.
Accompanying drawing explanation
Fig. 1 is the front view of the execution mode representing electromagnetic contactor involved in the present invention.
Fig. 2 is the profile of the A-A line along Fig. 1.
Fig. 3 is the profile that foreign matter under the non-power status of the electromagnetic contactor representing execution mode falls path.
Fig. 4 is the profile that foreign matter under the "on" position of the electromagnetic contactor representing execution mode falls path.
Embodiment
Below, based on accompanying drawing, describe the execution mode of electromagnetic contactor involved in the present invention in detail.In addition, the present invention can't help present embodiment and limited.
Execution mode
Fig. 1 is the front view of the execution mode representing electromagnetic contactor involved in the present invention,
Fig. 2 is the profile of the A-A line along Fig. 1, and Fig. 3 is the profile that foreign matter under the non-power status of the electromagnetic contactor representing execution mode falls path, and Fig. 4 is the profile that foreign matter under the "on" position of the electromagnetic contactor representing execution mode falls path.
As shown in Figure 1 to 4, the electromagnetic contactor 90 of execution mode has: housing 10; Contactor mechanism 20, it is accommodated and is configured in the central portion of housing 10; Cover body 11, it is installed on the housing 10, and covers contactor mechanism 20; And not shown electromagnetism movement device, it is installed on the housing 10 (right side in Fig. 2 ~ Fig. 4), makes contactor mechanism 20 carry out action.Housing 10 and cover body 11 are formed by utilizing glass fiber-reinforced insulating material.The electromagnetic contactor 90 of execution mode, as normally arranging posture, as shown in Figure 2 to 4, is arranged on the inside of control panel etc., makes cross bar 22 described later displacement in the horizontal direction.
Contactor mechanism 20 has paired fixed contact therefor 21, cross bar 22 and movable contact 23.Paired fixed contact therefor 21 is formed as U-shaped separately, and peristome, towards central authorities, configures in the mode clamping cross bar 22 up and down and fixes in the housing 10.The close centre of fixed contact therefor 21 a slice 21a is wherein fastened with fixed contact 21c, and another sheet 21b is provided with terminal screw 21d.The electromagnetic contactor 90 of execution mode has four pairs of fixed contact therefors 21.
Cross bar 22 is configured in the central portion of housing 10, to the left and right free displacement of Fig. 2, can be driven and (horizontal direction) displacement to the left and right by not shown described electromagnetism movement device.The movable contact 23 maintaining elongated plate-like is inserted in the square window 22a of cross bar 22, make the central part of this movable contact 23 in the base place of square window 22a, this movable contact 23 has a pair moving contact 23a contacting with each fixed contact 21c/be separated at two ends.
The central portion of movable contact 23 engages with one end of contact spring 24.Contact spring 24 is slightly compressed, and its other end engages with the top margin of square window 22a.Under electromagnetism movement device is non-energized (open position) the i.e. state of Fig. 2 and Fig. 3, movable contact 23 by contact spring 24 by being pressed on the base of square window 22a.
Below, the action of electromagnetic contactor 90 is described.If flow through electric current in the magnet exciting coil of not shown electromagnetism movement device, then cross bar 22 and movable contact 23 are to the right displacement of Fig. 2, as shown in Figure 4, become the on-position that fixed contact 21c is contacted with moving contact 23a, electromagnetic contactor 90 becomes "on" position.
If the failure of current of described magnet exciting coil, then utilize the back-moving spring of electromagnetism movement device to make cross bar 22 displacement to the left, as shown in Figure 3, become the open position that fixed contact 21c is separated with moving contact 23a, electromagnetic contactor 90 becomes non-power status.
Below, the characteristic structural of the electromagnetic contactor 90 of execution mode is described.Between wherein a slice 21a and the partition wall 10a of housing 10 of fixed contact therefor 21, there is small gap 10b (for this bulk article of electromagnetic contactor 90, be difficult to the size of each parts is formed as just the same and makes the gap between parts be zero, small gap 10b will inevitably be produced between this synthetic resin of housing 10 and this metal parts of fixed contact therefor 21).
Gap 10b is in the end face 10c direction normally arranged towards housing 10 under posture of the electromagnetic contactor 90 shown in Fig. 1 ~ Fig. 4.As shown in Figures 3 and 4, if the foreign matter of insulating properties 30 drops down onto end face 10c, then due to the switch of electromagnetic contactor 90 vibrates, miscellaneous equipment produces vibration and the flowing of surrounding air, foreign matter 30 enters gap 10b sometimes.
As shown in Figure 3, under the non-power status (open position) of electromagnetic contactor 90, enter the foreign matter 30 in the gap 10b between housing 10 and fixed contact therefor 21, fall into the inside of housing 10 due to gravity.As the characteristic structural of the electromagnetic contactor 90 of present embodiment, on cross bar 22, be in all relative with the gap 10b scope of on-position, open position at movable contact 23 and fixed contact therefor 21, form accepting groove 40.
Accepting groove 40 has: widening portion 40c, and it has inclined plane 40a, 40b; And falling hole 40d, it is formed in the bottom of widening portion 40c, and width is narrower.The geomery of widening portion 40c is set as, when electromagnetic contactor 90 is non-power status (open position), make foreign matter 30 fall on the 40a of inclined plane, when electromagnetic contactor 90 is "on" position (on-position), foreign matter is fallen on the 40b of inclined plane.
The foreign matter 30 fallen in widening portion 40c moves on inclined plane 40a, 40b, accommodates and seals up for safekeeping in falling hole 40d, thus captured.When the compact electromagnetic contactor 90 of 10A level, falling hole 40d formation width is 1mm, the degree of depth is the size of about 3mm, if foreign matter 30 is once fall into falling hole 40d, then can not due to electromagnetic contactor 90 switch vibration or miscellaneous equipment vibration and fly out from falling hole 40d.
In addition, when the switch motion of electromagnetic contactor 90, produce cross-ventilation due to the action of cross bar 22 and movable contact 23 in housing 10 inside, but this convection current is merely through the widening portion 40c of cross bar 22, falling hole 40d is not by the impact of convection current, and foreign matter 30 also can not fly out due to convection current.
In addition, the foreign matter 30 sealed up for safekeeping in falling hole 40d is objects less than the gap 10b between housing 10 and fixed contact therefor 21, and before electromagnetic contactor 90 arrives life time, falling hole 40d can not be filled up by foreign matter 30.As described above, by the foreign matter entered from outside 30 is sealed up for safekeeping in falling hole 40d, thus foreign matter 30 can be reduced be attached to probability on fixed contact 21c, moving contact 23a, reduce the loose contact of electromagnetic contactor 90.
Claims (2)
1. an electromagnetic contactor, it is normally being arranged under posture, is set to keep the cross bar of movable contact to horizontal direction displacement,
It is characterized in that having:
Housing, described cross bar and movable contact are housed in central portion by it;
Paired fixed contact therefor, it configures on the housing in the mode clamping described cross bar up and down, and fixes across gap between this housing; And
Accepting groove, it is formed in below the gravity direction in described gap of described cross bar, relative with described gap, catches the foreign matter fallen from described gap.
2. electromagnetic contactor according to claim 1, is characterized in that,
Described accepting groove has: widening portion, its no matter described cross beam displacement to on-position, the open position of described movable contact and fixed contact therefor, below the gravity direction all spreading to described gap; And the falling hole that width is narrow, it is formed in the bottom of this widening portion, for sealing described foreign matter up for safekeeping.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011140874A JP5419928B2 (en) | 2011-06-24 | 2011-06-24 | Magnetic contactor |
| JP2011-140874 | 2011-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102842462A CN102842462A (en) | 2012-12-26 |
| CN102842462B true CN102842462B (en) | 2015-09-30 |
Family
ID=47369718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110420975.6A Expired - Fee Related CN102842462B (en) | 2011-06-24 | 2011-12-15 | Electromagnetic contactor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5419928B2 (en) |
| CN (1) | CN102842462B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745886B (en) * | 2014-01-14 | 2015-11-25 | 德力西电气有限公司 | A kind of protective cover and shell mechanism increasing contactor insulation performance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58103444U (en) * | 1982-01-08 | 1983-07-14 | 三菱電機株式会社 | electromagnetic switchgear |
| JP3172428B2 (en) * | 1996-03-26 | 2001-06-04 | 三菱電機株式会社 | Gas insulated switchgear |
| JP3804250B2 (en) * | 1998-02-13 | 2006-08-02 | 三菱電機株式会社 | Switch |
-
2011
- 2011-06-24 JP JP2011140874A patent/JP5419928B2/en not_active Expired - Fee Related
- 2011-12-15 CN CN201110420975.6A patent/CN102842462B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP5419928B2 (en) | 2014-02-19 |
| JP2013008580A (en) | 2013-01-10 |
| CN102842462A (en) | 2012-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20171215 |