CN101834096A - Magnetic hold relay for vehicles - Google Patents
Magnetic hold relay for vehicles Download PDFInfo
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- CN101834096A CN101834096A CN 201010165350 CN201010165350A CN101834096A CN 101834096 A CN101834096 A CN 101834096A CN 201010165350 CN201010165350 CN 201010165350 CN 201010165350 A CN201010165350 A CN 201010165350A CN 101834096 A CN101834096 A CN 101834096A
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- permanent magnet
- magnetic
- relay
- vehicles
- iron core
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Abstract
The invention discloses a magnetic hold relay for vehicles, comprising armature iron, a coil, yoke iron, a permanent magnet and an iron core, wherein the dimension of the permanent magnet is less than that of the yoke iron and the iron core, which makes the permanent magnet present an I shape with the yoke iron and the iron core. When the magnetic hold relay for the vehicles is turned off, the armature iron, the yoke iron, the permanent magnet and the iron core form a closure magnetic circuit together with a magnetic circuit air gap generated because the dimension of the permanent magnet is reduced, thereby providing a discharge path for the intrinsic magnetic field of the permanent magnet. The magnetic hold relay for the vehicles solves the existing technical problems the remanent magnetic force of the permanent magnet of the traditional magnetic hold relay disturbs the relay but can not resist vibration impact on the vehicle.
Description
Technical field
The invention belongs to automotive electronics part technical field, relate in particular to a kind of magnetic hold relay for vehicles.
Background technology
Magnetic hold relay for vehicles is the electronic device that is applied in than on the automobile of higher-end, often is used in aspects such as the control of car load power supply, security protection.Because of the operational environment on the automobile more abominable, as impact, vibration, high temperature, mist of oil etc., so, now have only minority manufacturers such as TYCO to develop the magnetic latching relay that can be used on the automobile for the having relatively high expectations of relay.Magnetic latching relay belongs to bistable relay, it is defined as: when importing the energizing quantity of a pulse to relay, the relay response also changes its state, when removing this energizing quantity, relay still keeps this state, needs the other suitable excitation of input just can turn back to original state.
The magnetic latching relay operation principle is, when relay input coil pulse voltage, at this moment,
Coil produces magnetic force+permanent magnet magnetic force＞spring counter-force, the armature adhesive, the contact conducting, armature, iron core, permanent magnet, yoke form a closed magnet loop under the effect of permanent magnet at this moment, when the coil pulse loss of voltage, relay relies on still holding contact conducting state of this closed-loop path.
When reverse impulse voltage of relay input coil, at this moment
Coil produces magnetic force-permanent magnet magnetic force＜spring counter-force, armature is decontroled under the effect of spring counter-force, the contact disconnects, air gap between armature, iron core, permanent magnet, yoke, armature and the iron core still has a closed magnet loop under the effect of permanent magnet at this moment, but this loop is owing to (the air non-magnet material that exists of air gap, magnetic resistance is very big), whole magnetic field magnetic force has reduced much, but still there is a downward power in this magnetic field to armature, is referred to as remaining magnetic force.Remaining magnetic force is harmful to relay itself.Such as, when automobile has bigger jolting under steam, under the effect of vibratory impulse, at this moment
Vibration force+remaining magnetic force＞spring counter-force, the armature adhesive, the contact conducting, this is that we do not wish situation about taking place.Therefore, how the remaining magnetic force of permanent magnet is controlled at the key issue that minimum state becomes magnetic latching relay.
Summary of the invention
The purpose of this invention is to provide a kind of magnetic hold relay for vehicles, to solve the problem that influences this relay reliability in the prior art owing to existing of remaining magnetic force.
Technical scheme of the present invention is, a kind of magnetic hold relay for vehicles, comprise armature, coil, yoke, permanent magnet and iron core, the size of described permanent magnet is less than described yoke and iron core, make this permanent magnet and described yoke and iron core be " worker " font, when described magnetic hold relay for vehicles disconnects, described armature, yoke, permanent magnet and iron core and form closed magnetic circuit because the size of described permanent magnet is dwindled the magnetic air gap of generation are for the intrinsic magnetic field of described permanent magnet provides the approach of releasing.
Further, described permanent magnet is with respect to yoke and iron core, and respectively there are 2 mm clearance both sides.
The remaining magnetic force that the invention solves existing magnetic latching relay permanent magnet can not be resisted the existing technical problem of vibratory impulse on the automobile to the interference of relay.
Description of drawings
Magnetic hold relay for vehicles structure front elevational schematic in Fig. 1 embodiment of the invention.
Magnetic hold relay for vehicles part-structure front elevational schematic in Fig. 2 embodiment of the invention.
Magnetic hold relay for vehicles structural upright schematic diagram in Fig. 3 embodiment of the invention.
Embodiment
The present invention can not resist the existing technical problem of vibratory impulse on the automobile for the remaining magnetic force that solves existing magnetic latching relay permanent magnet to the interference of relay, and develops a kind of magnetic hold relay for vehicles of new construction.According to above-mentioned purpose, the invention provides a kind of magnetic hold relay for vehicles, can reduce the remaining magnetic force of permanent magnet, reduce of the harmful effect of remaining magnetic force as possible to relay.
Permanent magnet magnetic force exists all the time and when relay adhesive and maintenance, all needs permanent magnet that certain magnetic field intensity is arranged, and this is indispensable.When relay during in adhesive and hold mode, require the magnetic field intensity of permanent magnet to be the bigger the better, and when relay is in release condition, require the magnetic field intensity of magnet the smaller the better, this is the community of a contradiction.
Measure provided by the invention promptly is: since permanent magnet magnetic force is an objective reality, under certain conditions, also be sustained, will make full use of when the relay adhesive; And relay then will be set up a passage of releasing to permanent magnet magnetic force when release condition, to reduce or to reduce the harmful effect of permanent magnet suction to relay.
In conjunction with shown in Figure 2, the magnetic circuit when magnetic hold relay for vehicles of the present invention is in adhesive work is made up of armature 1, coil 2, yoke 3, permanent magnet 4, iron core 5 as Fig. 1; Magnetic circuit is by armature 1, yoke 3, permanent magnet 4, iron core 5 during relay disconnection work, and magnetic air gap 7 is formed; The relay magnetic field magnetic line is 6-1.Magnetic hold relay for vehicles, wherein the width of permanent magnet 4 and yoke 3, iron core 5 comparatively speaking, its width is wanted little 4mm.Magnetic hold relay for vehicles after permanent magnet 4, yoke 3, iron core 5 assemblings are finished, each side has the gap 8 of 2mm.
When relay is in release condition, the periphery at iron core 5, permanent magnet 4, yoke 38 places in the gap forms closed-loop path, a magnetic field, the magnetic line of force is 6-2, the approach of releasing is provided for the intrinsic magnetic field of permanent magnet 4, reduce the influence of 4 pairs of armature 1 of permanent magnet, guarantee relay when release condition, not because of vibration, the impact adhesive of chance.
When relay is in attracting state, because of coil 2 energisings produce a bigger coil magnetic field, at this moment, armature 1, coil 2 magnetic fields, iron core 5, permanent magnet 4, yoke 3 are formed closed-loop path, a magnetic field, even after coil 2 outages, the magnetic field of permanent magnet still can be kept relay and is in closure state in above-mentioned closed-loop path.And the magnetic field of releasing that gap 8 is produced is much smaller than the magnetic field that coil is produced because of energising, when the relay closes state, and the main field assimilation that is produced by adhesive and for the adhesive parameter of relay, almost influence maybe can not ignored.
The present invention is owing to taked above technical measures, set up a leakage path for the intrinsic magnetic field of permanent magnet 4, reduce permanent magnet 4 influence to armature 1 when off-state, the situation of misoperation does not take place because of vibration, impact, and reduced product and proofreaied and correct difficulty, improved production efficiency and product quality, effect is fairly obvious.
Claims (2)
1. magnetic hold relay for vehicles, comprise armature, coil, yoke, permanent magnet and iron core, it is characterized in that, the size of described permanent magnet is less than described yoke and iron core, make this permanent magnet and described yoke and iron core be " worker " font, when described magnetic hold relay for vehicles disconnects, described armature, yoke, permanent magnet and iron core and form closed magnetic circuit because the size of described permanent magnet is dwindled the magnetic air gap of generation are for the intrinsic magnetic field of described permanent magnet provides the approach of releasing.
2. magnetic hold relay for vehicles according to claim 1 is characterized in that described permanent magnet is with respect to yoke and/or iron core, and respectively there are 2 mm clearance both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165350 CN101834096B (en) | 2010-04-29 | 2010-04-29 | Magnetic hold relay for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165350 CN101834096B (en) | 2010-04-29 | 2010-04-29 | Magnetic hold relay for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834096A true CN101834096A (en) | 2010-09-15 |
| CN101834096B CN101834096B (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010165350 Active CN101834096B (en) | 2010-04-29 | 2010-04-29 | Magnetic hold relay for vehicles |
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| Country | Link |
|---|---|
| CN (1) | CN101834096B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628934A (en) * | 2021-08-10 | 2021-11-09 | 上海沪工汽车电器有限公司 | Large current magnetic latching relay |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470510A (en) * | 1967-11-07 | 1969-09-30 | American Mach & Foundry | Magnetic latch relay |
| US20010033213A1 (en) * | 2000-01-20 | 2001-10-25 | Swartzentruber Brent James | Electrical relay contactor |
| US6677842B1 (en) * | 1999-09-29 | 2004-01-13 | Tyco Electronics Logistics Ag | Load disconnecting switch especially for use in motor vehicles |
| JP2006278057A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Latching relay |
| CN201032616Y (en) * | 2007-03-09 | 2008-03-05 | 刘新广 | Bistable permanent-magnet folding device |
-
2010
- 2010-04-29 CN CN 201010165350 patent/CN101834096B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470510A (en) * | 1967-11-07 | 1969-09-30 | American Mach & Foundry | Magnetic latch relay |
| US6677842B1 (en) * | 1999-09-29 | 2004-01-13 | Tyco Electronics Logistics Ag | Load disconnecting switch especially for use in motor vehicles |
| US20010033213A1 (en) * | 2000-01-20 | 2001-10-25 | Swartzentruber Brent James | Electrical relay contactor |
| JP2006278057A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Latching relay |
| CN201032616Y (en) * | 2007-03-09 | 2008-03-05 | 刘新广 | Bistable permanent-magnet folding device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628934A (en) * | 2021-08-10 | 2021-11-09 | 上海沪工汽车电器有限公司 | Large current magnetic latching relay |
| CN113628934B (en) * | 2021-08-10 | 2024-07-23 | 上海沪工汽车电器有限公司 | High-current magnetic latching relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101834096B (en) | 2012-12-19 |
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