CN101964273A - Magnetic inductive switch - Google Patents
Magnetic inductive switch Download PDFInfo
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- CN101964273A CN101964273A CN2010105161637A CN201010516163A CN101964273A CN 101964273 A CN101964273 A CN 101964273A CN 2010105161637 A CN2010105161637 A CN 2010105161637A CN 201010516163 A CN201010516163 A CN 201010516163A CN 101964273 A CN101964273 A CN 101964273A
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Abstract
The invention relates to a magnetic inductive switch which comprises a magnet, a moving conductor, a conductor and other components, wherein the moving conductor is made of a ferromagnetic material, arranged between the magnet and the conductor, and used for connecting or disconnecting two contacts of the conductor. When an external magnetic field does not exist or the external magnetic field is not strong enough to overcome the attraction force of the magnet to the moving conductor, the moving conductor always stays in the state of being attracted by the magnet, the moving conductor is at the magnet end at the moment, and a circuit is broken; and when the external magnetic field is greater than the attraction force of the magnet to the moving conductor, the moving conductor can get rid of the attraction state and move toward the direction of the external magnetic field, and the circuit is closed when the moving conductor moves to the conductor end and the two contacts of the conductor are connected. The magnetic inductive switch not only can be used as a unidirectional switch, but also can be used as a bidirectional switch or a multidirectional switch. Compared with a reed switch, the magnetic inductive switch has the advantages of small size, low cost, simple structure, easy manufacturing and convenient use.
Description
Technical field:
The present invention relates to a kind of automatic switch, specifically is a kind of magnetic induction switch.
Background technology:
At present, in electronic circuits such as mobile phone, stored-program control exchange, photocopier, washing machine, refrigerator, door magnetic, electromagnetic relay, electronic scale, liquid level gauge,, can use tongue tube basically as long as use automatic switch.Tongue tube is a kind of a kind of special line switching that utilizes field signal to control.Tongue tube is made up of a pair of flexible tongue, and tongue is sealed in the inert gas filled glass tube, and the tongue end face is folded mutually but left an areolar, and the end face contact is coated with one deck noble metal.When putting on the switch by the magnetic field that permanent magnet or coil produced, make two tongue magnetization of tongue tube, one of them tongue generates the N utmost point on contact position, generate the S utmost point on the contact position of another tongue.When the magnetic attraction that generates had overcome the resistance that the elasticity of tongue produces, tongue contacted conducting under attraction force acts, i.e. closing of circuit.In case magnetic field force is eliminated, tongue separates again because of the elastic force effect, and promptly circuit disconnects.
Tongue tube make and use in have a following problem: tongue tube meets that high-temperature time is long may to cause glass and metallic seal place to split and reveals, therefore must take to reach fast reliable solder technology, to solder technology requirement height; The magnetic field effect that electric current produced of welding can make the dry-reed tube switch action cause the contact to be damaged, and when therefore welding, must take suitable safeguard measure; When tongue tube is used for inductive load, as motor, relay coil etc., its contact is added with instantaneous pressure when opening a way in the contact, can undermine the contact of tongue tube and shorten life-span of tongue tube, must adopt protective circuit; When tongue tube and exciting magnet or coil, when being installed near high-intensity magnetic field interference sources such as transformers, the operating characteristic of tongue tube will be changed, and might cause misoperation; When highly dropping to ground more than tongue tube is by 30cm, its electrical characteristic comprises that startup and releasing value all can change.
Summary of the invention:
The present invention is intended to solve tongue tube manufacturing process difficulty, cost is high and bulky problem.
The mentality of designing of magnetic induction switch of the present invention: the variation of power when magnetic induction switch of the present invention utilizes internal magnetic field that built-in permanent magnet forms and external magnetic field to act on same ferromagnetic substance, ferromagnetic substance is moved in the scope of setting, when ferromagnetic substance moves to magnet one end, circuit disconnects, when ferromagnetic substance moves to conductor one end, circuit is connected, thereby realizes the induction to the external magnetic field.
Design of the present invention: a kind of magnetic induction switch is made up of shell, magnet, conductor and movable conductor.Shell is made by insulating material, and its shape has tubulose and discoid two kinds.For guaranteeing the safe and reliable of magnetic induction switch, can vacuum in the shell, also can be filled with inert gas.
When shell is tubulose, one end fixed magnets of pipe, magnet is a permanent magnetic material, its effect is the absorption movable conductor, the shape of magnet, size should be complementary with shape, size and the weight of the movable conductor that is adsorbed, do not having under the situation of external magnetic field, magnet can adsorb movable conductor with lucky that to return be optimal selection to the attraction of movable conductor from the conductor position.The other end fixed conductor of pipe, conductor is made up of two discrete contacts, and the height of two contacts and distance should guarantee can contact simultaneously with two contacts when movable conductor moves to conductor one end, and external circuits can be distinguished in two contacts.Movable conductor places between magnet and the conductor, and can move between magnet and conductor, its role is to be switched on or switched off two contacts of conductor.For reducing contact resistance, the movable conductor surface can be covered with electric conductivity good metal such as gold, silver, copper.
When shell when being discoid, the center fixation magnet of disk has circular orbit to be used to place movable conductor between disc centre and the edge, circular orbit outside fixed conductor.Magnet is made by permanent magnetic material, its role is to adsorb movable conductor, the shape of magnet, size should be complementary with shape, size and the weight of the movable conductor that is adsorbed, do not having under the situation of external magnetic field, magnet can adsorb movable conductor with lucky that to return be optimal selection to the attraction of movable conductor from the conductor position.Conductor is made up of two discrete ring-like circles that distribute along the circular orbit outer circumference, the height of two ring-like circles and distance should guarantee can contact simultaneously with two ring-like circles when movable conductor moves to conductor one end, two ring-like circle difference external circuitses, the effect of conductor is to be switched on or switched off external circuits.Movable conductor is made by ferrimagnet, places in the circular orbit between magnet and the conductor, and can move radially in circular orbit or move as circumference along circular orbit, its role is to be switched on or switched off two ring-like circles of conductor.For reducing contact resistance, the movable conductor surface can be covered with electric conductivity good metal such as gold, silver, copper.
Magnetic induction switch of the present invention is to realize automatic switch in the following way.
When not having external magnetic field or external magnetic field to be not enough to overcome magnet to the attraction of movable conductor, movable conductor is in all the time by the state of magnet absorption, and at this moment, movable conductor is at magnet one end, and circuit disconnects.When the attraction of external magnetic field greater than magnet during to the attraction of movable conductor, the movable conductor externally effect in magnetic field is moved to conductor one end and contacts simultaneously with two contacts (or two ring-like circles) of conductor, this moment closing of circuit.When eliminate or the attraction of external magnetic field when being not enough to overcome magnet to the attraction of movable conductor the external magnetic field, movable conductor is moved to the magnet direction by the attraction disengaging conductor of magnet, and is in once more by the magnet absorption state, at this moment, movable conductor is at magnet one end, and circuit disconnects.
According to such design, magnetic induction switch of the present invention can be made single-way switch, bidirectional switch and multi-direction switch.
Magnetic induction switch of the present invention is compared with tongue tube, and is not high to manufacture process requirement, and volume is little, cost is low, simple in structure, easy to manufacture, easy to use.
Description of drawings:
Fig. 1 is the structural representation of magnetic induction single-way switch
Fig. 2 is the structural representation of magnetic induction bidirectional switch
Fig. 3 is the structural representation of magnetic induction multi-direction switch
Among the figure: 1-magnet 2-movable conductor 3-conductor 4-straight tube 5-loam cake 6-lower cover 7-upper casing 8-lower casing
Embodiment:
Be described further below in conjunction with accompanying drawing:
As shown in Figure 1, magnetic induction single-way switch of the present invention is made up of magnet 1, movable conductor 2, conductor 3, straight tube 4, loam cake 5, lower cover 6.Straight tube 4 is cylindrical blank pipes of a both ends open, and loam cake 5 is stepped cylindrical, is used for cooperating with straight tube 4, and wherein the big column diameter equals the external diameter of straight tube 4, and the diameter of small column equals the internal diameter of straight tube 4, and loam cake 5 should be able to guarantee to cooperate closely after being pressed into straight tube 4.Loam cake 5 centre bits are equipped with counterbore and are used for fixing magnet 1.Magnet 1 is magnetic bead, magnetic post, magnet ring or other shape of being made by permanent magnetic material, its role is to adsorb movable conductor 2, the shape of magnet 1, size should be complementary with shape, size and the weight of the movable conductor 2 that is adsorbed, do not having under the situation of external magnetic field, the attraction of 1 pair of movable conductor 2 of magnet can be adsorbed movable conductor 2 with lucky that to return be optimal selection from conductor 3 positions.Movable conductor 2 is spheroids that ferrimagnet is made, and the diameter of spheroid is equal to or slightly less than the internal diameter of straight tube 4, and movable conductor 2 places in the straight tube 4 and can move in straight tube 4.Lower cover 6 is stepped cylindrical, is used for cooperating with straight tube 4, and wherein the big column diameter equals the external diameter of straight tube 4, and the diameter of small column equals the internal diameter of straight tube 4, and lower cover 6 should be able to guarantee to cooperate closely after being pressed into straight tube 4.Lower cover 6 fixed conductors 3.Conductor 3 is made up of two contacts, and external circuits can be distinguished in two contacts.
Magnetic induction single-way switch of the present invention is to realize automatic switch in the following way.
When not having external magnetic field or external magnetic field to be not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 is in all the time by magnet 1 adsorbed state, and at this moment, movable conductor 2 is at magnet 1 one ends, and movable conductor 2 does not contact with conductor 3, and promptly circuit disconnects.When putting on the magnetic induction switch by the external magnetic field that permanent magnet or coil produced, if the magnetic attraction that generates is during greater than the attraction of 1 pair of movable conductor 2 of magnet, the movable conductor 2 externally effect in magnetic field is moved to conductor 3 one ends and contacts simultaneously with two contacts of conductor 3, i.e. closing of circuit.When the attraction of elimination of external magnetic field force or external magnetic field was not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 was recovered absorbed state under the effect of magnet 1, and promptly circuit disconnects.
Magnetic induction single-way switch of the present invention can only be in the induction of a direction realization to the external magnetic field.
As shown in Figure 2, magnetic induction bidirectional switch of the present invention is made up of magnet 1, movable conductor 2, conductor 3, straight tube 4, lower cover 6.
Magnetic induction bidirectional switch of the present invention is to realize automatic switch in the following way.
When not having external magnetic field or external magnetic field to be not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 is in the state that is adsorbed by magnet 1 all the time, and at this moment, movable conductor 2 is in straight tube 4 middle parts, movable conductor 2 does not contact with the conductor 3 at straight tube 4 two ends, and circuit disconnects.When putting on a certain end of magnetic induction bidirectional switch by the external magnetic field that permanent magnet or coil produced, if the external magnetic field is to the attraction of movable conductor 2 attraction greater than 1 pair of movable conductor 2 of magnet, the movable conductor 2 externally effect in magnetic field is moved to these direction conductor 3 one ends and contacts simultaneously with two contacts of this end conductor 3, i.e. closing of circuit.When the attraction of elimination of external magnetic field force or external magnetic field was not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 was recovered absorbed state again under the effect of magnet 1, and promptly circuit disconnects.The attraction that external magnetic field and external magnetic field, two ends is arranged simultaneously when straight tube 4 two ends is during all greater than the attraction of 1 pair of movable conductor 2 of magnet, and movable conductor 2 moves and contacts the closing of circuit of this end with two contacts of this end conductor 3 to the big end of magnetic field intensity.
Magnetic induction bidirectional switch of the present invention can be in the induction of both direction realization to the external magnetic field.
As shown in Figure 3, magnetic induction multi-direction switch of the present invention is made up of magnet 1, movable conductor 2, conductor 3, upper casing 7, lower casing 8.
Lower casing 8 profiles are flat cylinder, and the center has a recessed little hollow cylinder to be used for fixing magnet 1, and magnet 1 is cylinder, spheroid or other shape that permanent magnetic material is made, and its role is to adsorb movable conductor 2.Between lower casing 8 recessed little hollow cylinder and lower casing 8 edges, it is the recessed cannelure of rectangle that cross sectional shape is arranged, and cannelure is used to place movable conductor 2.Movable conductor 2 is spheroids of being made by ferrimagnet, and its diameter is less than the height of lower casing 8 cannelures and the width of cannelure bottom.Lateral surface at lower casing 8 cannelures has conductor 3, conductor 3 does not connect mutually by two and the ring-like circle that embeds the ring shaped slot outer circumference is formed, the height of two ring-like circles and distance must guarantee can contact with two ring-like circles simultaneously when movable conductor 2 moves to the ring shaped slot outside, and two ring-like circles can be distinguished external circuits.Upper casing 7 is the plane with lower casing 8 buckling surfaces, and last lower casing fastens the circular orbit of a sealing of formation between recessed cannelure of back lower casing 8 and upper casing 7 buckling surfaces, and movable conductor 2 can move radially in circular orbit or move as circumference along circular orbit.Last lower casing connected mode can be to fasten, be threaded, bond or screw down.
Two ring-like circles of conductor 3 are installed at lower casing 8 recessed rectangular channel outer circumference faces earlier, magnet 1 is put into the recessed hollow cylinder of lower casing 8, guarantee to be connected firmly.Movable conductor 2 is put in the recessed cannelure of lower casing 8, upper casing 7 is anchored on the lower casing 8, last lower casing fastens the circular orbit of a sealing of formation between the recessed cannelure of back lower casing 8 and upper casing 7 buckling surfaces, movable conductor 2 both can move radially in circular orbit, also can move as circumference along circular orbit.
Magnetic induction multi-direction switch of the present invention is to realize automatic switch in the following way.
When not having external magnetic field or external magnetic field to be not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 is subjected to the attraction of magnet 1, is adsorbed to the circular orbit inboard all the time, and at this moment, circuit disconnects.When putting on the magnetic induction multi-direction switch by the external magnetic field that permanent magnet or coil produced, if the magnetic attraction that generates is during greater than the attraction of 1 pair of movable conductor 2 of magnet, the movable conductor 2 externally effect lower edge circular orbit in magnetic field moves to external magnetic-field direction, when movable conductor 2 moves to when contacting simultaneously with two ring-like circles of circular orbit outer conductors 3 closing of circuit.When the attraction of elimination of external magnetic field force or external magnetic field was not enough to overcome the attraction of 1 pair of movable conductor 2 of magnet, movable conductor 2 was adsorbed to the inboard of circular orbit again under the effect of magnet 1, and circuit disconnects.
Magnetic induction multi-direction switch of the present invention can be in the induction of circumferencial direction realization to the external magnetic field.
Same principle, under the constant situation of other structure, the characteristic of utilizing magnet and ferrimagnet to conduct electricity changes the magnet of magnetic induction switch of the present invention into ferrimagnet, and movable conductor changes magnet into, then can realize the induction to outside ferromagnetic substance.
Claims (3)
1. a magnetic induction switch is made up of magnet (1), movable conductor (2), conductor (3) etc., it is characterized in that movable conductor (2) places between magnet (1) and the conductor (3).
2. magnetic induction switch as claimed in claim 1 is characterized in that magnet (1) is a permanent magnetic material.
3. magnetic induction switch as claimed in claim 1 is characterized in that movable conductor (2) is a ferrimagnet, and the surface is covered with the electric conductivity good metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105161637A CN101964273A (en) | 2010-10-15 | 2010-10-15 | Magnetic inductive switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105161637A CN101964273A (en) | 2010-10-15 | 2010-10-15 | Magnetic inductive switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101964273A true CN101964273A (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105161637A Pending CN101964273A (en) | 2010-10-15 | 2010-10-15 | Magnetic inductive switch |
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|---|---|
| CN (1) | CN101964273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849396A (en) * | 2019-11-19 | 2020-02-28 | 国网浙江淳安县供电有限公司 | Pressing plate on-off state detection device and pressing plate anti-misoperation system |
-
2010
- 2010-10-15 CN CN2010105161637A patent/CN101964273A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849396A (en) * | 2019-11-19 | 2020-02-28 | 国网浙江淳安县供电有限公司 | Pressing plate on-off state detection device and pressing plate anti-misoperation system |
| CN110849396B (en) * | 2019-11-19 | 2024-05-28 | 国网浙江淳安县供电有限公司 | Pressing plate switching state detection device and pressing plate error prevention system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110202 |