CN102983042B - Electromagnetic relay capable of reducing foreign matter contamination - Google Patents
Electromagnetic relay capable of reducing foreign matter contamination Download PDFInfo
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- CN102983042B CN102983042B CN201210429804.4A CN201210429804A CN102983042B CN 102983042 B CN102983042 B CN 102983042B CN 201210429804 A CN201210429804 A CN 201210429804A CN 102983042 B CN102983042 B CN 102983042B
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Abstract
The invention discloses an electromagnetic relay capable of reducing foreign matter contamination. The electromagnetic relay capable of reducing the foreign matter contamination comprises a relay main body part and a shell. The shell is covered outside the relay main body part. The relay main body part comprises a movable contact and a stationary contact which are matched. An air hole capable of communicating air inside and outside the shell is formed in the shell. A raised boss is arranged around the periphery of the air hole and on the inner side of the shell, and a blocking piece is covered on the boss to block the air hole from communicating the air inside and outside the shell. A through groove is arranged in one section of the boss so that the air hole can communicate the air inside and outside the door through the through groove, and the through groove is arranged at the position of the boss enabling flowing air not be directly toward the movable contact and the stationary contact. According to the structure, dust, water vapor and the like entering the inside of the relay from the air hole can be prevented from directly falling to the surfaces of the movable contact and the stationary contact, and therefore electrical reliability of the relay is improved. Besides, positioning and supporting between the shell and the relay main body are enhanced, and therefore compressive strength of the shell of the relay is improved.
Description
Technical field
The present invention relates to a kind of electromagnetic relay, particularly relate to a kind of electromagnetic relay that can reduce foreign and by air-vent, dynamic and static contact be polluted.
Background technology
Existing non-plastic package type electromagnetic relay and electromagnetic relay, its shell all leaves air-vent, for linking up atmosphere inside and outside relay, especially when the dynamic and static contact of relay is energized continuously, the air themperature of relay inside can rise, and now air-vent can make relay inner air and outer air exchange, and avoids relay Inside Air Temperature too high, and discharge the pernicious gas of the inner reduction relay performance produced due to the energising of dynamic and static contact of relay in time, thus guarantee relay performance.
But, the air-vent of relay is inside and outside communication relay while atmosphere, outside dust, steam etc. also enter relay inside easily via its air-vent, especially when dust, steam etc. directly drop on the dynamic and static contact of relay, especially can the electric property of grievous injury relay, therefore, how to alleviate the infringement to relay performance such as dust, steam entering relay inside from relay air-vent, ensure the cleanliness factor of the dynamic and static contact surface of relay, thus guarantee the properties of product of relay, always be a difficult problem for relay manufacturer.
And, existing relay, due to compact conformation, relay inner space is narrow and small, shell is often difficult to be located preferably and support in relay, and the compression strength of a lot of customer requirement relay1 case meets: evenly apply a certain size force value (such as 500N) in cover top portion by the direction that shell loads, shell does not have crackle or other defect making product degenerate.Therefore, the compression strength how improving shell also numerous relay manufacturer paid close attention to.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, a kind of electromagnetic relay that can reduce foreign substance pollution is provided, by the improvement to breather hole structure, on the one hand, the dust, steam etc. entering relay inside from air-vent can be avoided directly to fall dynamic and static contact surface, thus promote relay electrical reliability; On the other hand, also enhance the location between shell and relay body and support, thus improve the compression strength of relay1 case.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electromagnetic relay that can reduce foreign substance pollution, comprises relay main body part and shell; Jacket is outside relay main body part, and described relay main body part includes the dynamic and static contact of matching; Described shell is provided with the air-vent that can be communicated with shell inner air and outer air; The periphery around air-vent inside the shell establishes bossed boss, and a block piece covers on boss to intercept the connection of air-vent to shell inner air and outer air; Boss wherein one section be set to groove, to make air-vent be communicated with shell inner air and outer air by this groove, described groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact.
Described block piece and shell are structure as a whole.
Described block piece be located in relay main body part with the platform of the corresponding section, position of air-vent, when shell matches with relay main body part, the boss of shell rides in the platform in relay main body part.
Described relay main body part also comprises base, matches with described base in the bottom of described shell, and the position corresponding with air-vent in the base established by described platform, and when shell matches with base, the boss of shell rides on the platform of base.
Described air-vent is located at the roof body place of shell, and the boss of described protuberance is located at the inner side of the roof body of shell.
Described boss is circulating type shape, and air-vent is trapped among central authorities by boss.
Described boss is half circulating type shape, and the boss of half circulating type shape is connected on the sidewall bodies place of a side of shell, and air-vent is trapped among central authorities by the sidewall bodies of a side of boss and shell jointly.
A kind of electromagnetic relay that can reduce foreign substance pollution of the present invention, be provided with air-vent on shell, establish bossed boss around air-vent inside the shell, air-vent is trapped among central authorities by boss, and a block piece covers on boss to intercept the connection of air-vent to shell inner air and outer air; Boss is provided with groove, and groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact, for being communicated with the internal environment of air-vent extraneous air and relay; Block piece can be into a single integrated structure with shell, also can being that relay main body part or base are provided with the platform matched with the boss of the air-vent periphery of shell, developing mutually during for assembling with the boss of the air-vent periphery on shell.
When shell and relay main body part (comprise electromagnet portion and base portion is graded) are assembled, the boss of the air-vent periphery on shell is pressed on the platform set by relay main body part or base, boss due to the air-vent periphery on shell is that air-vent is enclosed in central authorities, and groove is located at the air making to flow through not have direct towards dynamic, the position of the boss in fixed contact direction, therefore dynamic, just obstruct is defined between fixed contact and air-vent, make the dust of the outside of relay, even if steam etc. pass through air-vent, also directly cannot fall relay to move, on fixed contact, and can only accumulate on the regional area of the platform set by relay base.
The invention has the beneficial effects as follows: because the periphery around air-vent that have employed inside the shell establishes bossed boss, a block piece covers on boss to intercept the connection of air-vent to shell inner air and outer air; Boss wherein one section be set to groove, shell inner air and outer air is communicated with by this groove to make air-vent, described groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact, like this, just between dynamic and static contact and air-vent, just define obstruct, even if make the dust of the outside of relay, steam etc. pass through air-vent, also cannot directly fall on the dynamic and static contact of relay, thus decrease the pollution level of the dynamic and static contact of relay by extraneous foreign matter, improve the electrical reliability of relay; Due to have employed block piece is designed to be located in relay main body part with the platform of the corresponding section, position of air-vent, when shell matches with relay main body part, the boss of shell rides in the platform in relay main body part, or platform established the position corresponding with air-vent in the base, when shell matches with base, the boss of shell rides on the platform of base; This structure, because the boss of the air-vent periphery of shell is structurally comparatively solid, after itself and relay assemble, define and fit with the large face of the platform set by main part or base, thus make the location between shell and relay body and support become stable and solid, thus improve the compression strength of relay1 case.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But a kind of electromagnetic relay that can reduce foreign substance pollution of the present invention is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of D structure of the present invention;
Fig. 2 is the structural representation of shell of the present invention;
Fig. 3 is the schematic diagram that shell of the present invention and relay main body part assemble when position;
Fig. 4 is the top plan view after the present invention assembles;
Fig. 5 is the elevation cross-sectional view after the present invention assembles.
Embodiment
Embodiment, shown in accompanying drawing, a kind of electromagnetic relay that can reduce foreign substance pollution of the present invention, comprises relay main body part 20 and shell 1; Shell 1 covers on outside relay main body part 20, and described relay main body part 20 includes the dynamic and static contact 3 of matching; Described shell 1 is provided with the air-vent 11 that can be communicated with shell inner air and outer air; The periphery around air-vent inside shell 1 establishes bossed boss 12, block piece 21 to cover on boss 12 to intercept the connection of air-vent to shell inner air and outer air; Boss 12 wherein one section be set to groove 13, shell inner air and outer air is communicated with by this groove 13 to make air-vent, described groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact, such as groove 13 is located at the side of the position that to cooperatively interact away from dynamic and static contact 3, and it is direct towards direction, dynamic and static contact that the groove 13 of this position makes the air flow through not have.
In the present embodiment, block piece 21 for be located in relay main body part with the platform of the corresponding section, position of air-vent, and this platform 21 is the positions corresponding with air-vent be located in base 2, when shell 1 matches with base 2, the boss 12 of shell rides on the platform 21 of base.
Certainly, block piece also can for be located in the miscellaneous part of relay main body part with the platform of the corresponding section, position of air-vent, such as magnetic circuit part is medium; Block piece also can be structure as a whole with shell, boss.
Described air-vent 11 is located at roof body 14 place of shell 1, and the boss 12 of described protuberance is located at the inner side of the roof body 14 of shell.
Described boss 12 is half circulating type shape, and the boss 12 of half circulating type shape is connected on sidewall bodies 15 place of a side of shell, and air-vent 11 is trapped among central authorities by the sidewall bodies 15 of a side of boss 12 and shell jointly.Certainly, also can be that boss is designed to circulating type shape, air-vent be trapped among central authorities by the boss of circulating type shape.
A kind of electromagnetic relay that can reduce foreign substance pollution of the present invention, be provided with air-vent 11 on shell 1, bossed boss 12 is established around air-vent inside the shell, air-vent 11 is trapped among central authorities by boss 12, and a block piece 21 covers on boss 12 to intercept the connection of air-vent 11 pairs of shell inner air and outer air; Boss 12 is provided with groove 13, groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact, for being communicated with the internal environment of air-vent extraneous air and relay, outside air can enter in boss circle by air-vent 11, then lead to outside boss circle by boss circle by groove 13, boss circle is equipped with in the shell 1 of each parts of relay outward just, like this, just achieves the circulation of outside air and enclosure interior and relay inside; Base 2 is provided with the platform 21 matched with the boss 12 of shell air-vent periphery, develops mutually during for assembling with the boss 12 of the air-vent periphery on shell.
When shell and relay main body part (comprising electromagnet portion and base portion) are assembled, the boss 12 of the air-vent periphery on shell is pressed on the platform 21 set by base, boss 12 due to the air-vent periphery on shell is that air-vent is enclosed in central authorities, and groove 13 is located at the air making to flow through not have direct towards dynamic, the position of the boss in fixed contact direction, therefore dynamic, just obstruct is defined between fixed contact 3 and air-vent 11, make the dust of the outside of relay, even if steam etc. pass through air-vent, also directly cannot fall relay to move, on fixed contact 3, and can only accumulate on the regional area 211 of the platform set by relay base.
When the dust, steam etc. of relay outside enter relay inside by air-vent 11, because air-vent is enclosed in central authorities with the platform 21 of base by the projection 12 of shell, therefore extraneous foreign matter cannot directly be fallen on dynamic and static contact 3, and can only accumulate on the regional area 211 on base platform 21, thus avoid the dynamic and static contact of relay 3 by from extraneous foreign substance pollution, affect relay electric property.Comparatively solid in projection 12 structure due to the air-vent periphery of shell 1, after assembling, it is pressed on the platform 21 of base, thus makes the location between shell 1 and relay body and support become stable and solid, improves the compression strength index of relay1 case.
Above-described embodiment is only used for further illustrating a kind of electromagnetic relay that can reduce foreign substance pollution of the present invention; but the present invention is not limited to embodiment; every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all fall in the protection range of technical solution of the present invention.
Claims (6)
1. an electromagnetic relay for foreign substance pollution be can reduce, relay main body part and shell comprised; Jacket is outside relay main body part, and described relay main body part includes the dynamic and static contact of matching; Described shell is provided with the air-vent that can be communicated with shell inner air and outer air; It is characterized in that: the periphery around air-vent inside the shell establishes bossed boss, a block piece be arranged on the parts of electromagnetic relay covers on boss to intercept the connection of air-vent to shell inner air and outer air; When shell matches with relay main body part, the block piece be arranged on relay block rides on the boss of shell; Boss wherein one section be set to groove, to make air-vent be communicated with shell inner air and outer air by this groove, described groove is located at the position that the air making to flow through does not have the direct boss towards direction, dynamic and static contact.
2. the electromagnetic relay that can reduce foreign substance pollution according to claim 1, it is characterized in that: described block piece be located in relay main body part with the platform of the corresponding section, position of air-vent, when shell matches with relay main body part, the boss of shell rides in the platform in relay main body part.
3. the electromagnetic relay that can reduce foreign substance pollution according to claim 2, it is characterized in that: described relay main body part also comprises base, match with described base in the bottom of described shell, the position corresponding with air-vent in the base established by described platform, when shell matches with base, the boss of shell rides on the platform of base.
4. the electromagnetic relay that can reduce foreign substance pollution according to claim 1 or 2 or 3, is characterized in that: described air-vent is located at the roof body place of shell, and the boss of described protuberance is located at the inner side of the roof body of shell.
5. the electromagnetic relay that can reduce foreign substance pollution according to claim 4, is characterized in that: described boss is circulating type shape, and air-vent is trapped among central authorities by boss.
6. the electromagnetic relay that can reduce foreign substance pollution according to claim 4, it is characterized in that: described boss is half circulating type shape, the boss of half circulating type shape is connected on the sidewall bodies place of a side of shell, and air-vent is trapped among central authorities by the sidewall bodies of a side of boss and shell jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429804.4A CN102983042B (en) | 2012-10-29 | 2012-10-29 | Electromagnetic relay capable of reducing foreign matter contamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429804.4A CN102983042B (en) | 2012-10-29 | 2012-10-29 | Electromagnetic relay capable of reducing foreign matter contamination |
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| Publication Number | Publication Date |
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| CN102983042A CN102983042A (en) | 2013-03-20 |
| CN102983042B true CN102983042B (en) | 2015-07-08 |
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| CN201210429804.4A Active CN102983042B (en) | 2012-10-29 | 2012-10-29 | Electromagnetic relay capable of reducing foreign matter contamination |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426687B (en) * | 2013-08-14 | 2015-10-28 | 厦门宏发电声股份有限公司 | A kind of clapper-type electromagnetic relay |
| CN108630470A (en) * | 2018-06-15 | 2018-10-09 | 厦门宏发汽车电子有限公司 | A kind of breather hole structure and its switch of switch |
Citations (5)
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|---|---|---|---|---|
| CN201117574Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay water proof air-permeable structure |
| CN201117572Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay water proof air-permeable structure |
| CN201117573Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay with water proof air-permeable structure |
| CN201397768Y (en) * | 2009-04-26 | 2010-02-03 | 宁波赛特勒电子有限公司 | Microminiature high power relay having a cover casing with a plurality of breathable vortex holes |
| CN202839466U (en) * | 2012-10-29 | 2013-03-27 | 厦门宏发电声股份有限公司 | Electromagnetic relay capable of reducing foreign matter pollution |
-
2012
- 2012-10-29 CN CN201210429804.4A patent/CN102983042B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117574Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay water proof air-permeable structure |
| CN201117572Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay water proof air-permeable structure |
| CN201117573Y (en) * | 2007-09-18 | 2008-09-17 | 厦门宏发电声有限公司 | Electromagnetic relay with water proof air-permeable structure |
| CN201397768Y (en) * | 2009-04-26 | 2010-02-03 | 宁波赛特勒电子有限公司 | Microminiature high power relay having a cover casing with a plurality of breathable vortex holes |
| CN202839466U (en) * | 2012-10-29 | 2013-03-27 | 厦门宏发电声股份有限公司 | Electromagnetic relay capable of reducing foreign matter pollution |
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| CN102983042A (en) | 2013-03-20 |
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Effective date of registration: 20160420 Address after: 710000 Shaanxi city of Xi'an province high tech Zone Guangde Road No. 8 building two layer Patentee after: Xi'an Hongfa Electrical Appliance Co., Ltd. Address before: 361000, No. 91-101 South South Road, Jimei Industrial Zone, Xiamen, Fujian Patentee before: Xiamen Hongfa Electroacoustic Co., Ltd. |