CN1808661A - Pivoted magnet proximity switch - Google Patents

Abstract

This invention relates to swing arm magnetic switch with switch body and close block, wherein, The switch body has shell, switch axle composed of static and dynamic probes; the shell is located with isolation rack fixed on the supportive axle and static probes; the supportive axle is fixed with reverse main swing arm at an angle around; the main swing arm is fixed with one permanent iron to make the main arm rotate for an angle through the above close block; the dynamic probe is directly fixed on the main swing arm to keep electrical connection to realize dynamic and static probes.

Description

Pivoted magnet proximity switch

Technical field

The present invention relates to a kind of appliance switch that is used for position probing and control, particularly a kind of pivoted magnet proximity switch.

Background technology

In the prior art, the appliance switch kind that is used for position probing and control is a lot, and the most traditional is various travel switches and sensitive switch, and its shortcoming is that detected object and switch needs contact-impact to make switch motion.The switch that need not contact-impact has three classes: the first kind is to adopt electronic type that active element makes near switch; Second class is the magnetic switch that adopts tongue tube, wet reed pipe to make; The 3rd class is the employing electric contact similar with relay to regular tap, controls the non-contact switch that is switched on or switched off with permanent magnet.This type of switch is compared with sensitive switch with traditional various travel switches, overcome the shortcoming that needs to make switch motion by collision, kept the durable advantage in contact, and can make the contact hermetically sealed, be used in humidity, under water, in the various adverse circumstances such as inflammable and explosive, the plateau of burn into.The correlation technique of this type of switch is more, for example, CN2123816Y discloses a kind of contactless travel switch, CN2141122Y discloses a kind of explosion-proof near travel switch, CN2119031Y discloses a kind of Magnetic contact switch, and the structure that their moving contact and fixed contact connected sum disconnect belongs to direct-push, and reliability is general, shock resistance is not strong, and it is bigger that outer magnetic is done.For another example, CN1218587A discloses a kind of magnetic proxymity switch system, and CN2289293Y discloses a kind of permanent magnet proximity switch, and its practicality is relatively poor.Also as, CN2134711Y and CN2225093Y all disclose a kind of contactless travel switch, all are to be converted by sensitive switch.The diversity of the reasonability of its structure, shock resistance, practicality, using method is all very general.

Summary of the invention

The purpose of this invention is to provide a kind of pivoted magnet proximity switch, technical problem to be solved is to make this near the switch compact overall structure, and volume is little, and reliability strengthens.

For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:

A kind of pivoted magnet proximity switch, has the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material or permeability magnetic material make near piece, switch body has the shell of being made by non-magnet material, the switch pair that constitutes by at least one fixed contact and at least one moving contact corresponding with it, its technical scheme is to be provided with insulating support in the described shell, back shaft and above-mentioned fixed contact are installed on this insulating support, be equipped with on the back shaft and can come the insulation of an angle of back rotation or the master pendulum arm of conduction around it, be equipped with at least one on the master pendulum arm by itself and the above-mentioned permanent magnet that makes master pendulum arm come an angle of back rotation near the magneticaction of piece, moving contact directly is installed on and comes back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm of conduction of electric cut-in pressure or be installed on it coming back rotation realization moving contact and fixed contact to connect or disconnect, be connected with acting body, be subjected to master pendulum arm come back rotation to influence to make master pendulum arm that the active force of this acting body is changed and axis body on insulating support comes an angle of back rotation, in the secondary swing arm that can conduct electricity.

In the technique scheme, described insulating support can be hollow form, its fixed cover is loaded in the shell, back shaft passes its two ends of insulating support and is fixed on the inwall of insulating support, master pendulum arm can be the frame-shaped structure of hollow, master pendulum arm can be horizontally set in insulating support, around back shaft come the master pendulum arm of an angle of back rotation can be respectively by the inwall upper limit and the lower limit of insulating support, the long axis of master pendulum arm is vertical with back shaft, master pendulum arm is divided into two parts that are uneven in length or equate by this back shaft, the above-mentioned quantity that is installed on the permanent magnet on the master pendulum arm can be one, it is embedded in the end near piece of being positioned at of master pendulum arm, its N, S utmost point line direction is consistent with the long axis direction of master pendulum arm, the other end of master pendulum arm can be equipped with and make master pendulum arm realize dynamic balancing or statically balanced counterweight, above-mentioned moving contact is installed on it and comes back rotation to realize what moving contact and fixed contact connected or disconnected, be connected with acting body, be subjected to master pendulum arm come back rotation to influence to make master pendulum arm that the active force of this acting body is changed and axis body on insulating support comes an angle of back rotation, in the secondary swing arm that can conduct electricity, the acting body that secondary swing arm is connected with it preferably is positioned at the cavity of the hollow of master pendulum arm.The back shaft that axis body that above-mentioned secondary swing arm rotates around it and master pendulum arm rotate around it can be coaxial, secondary swing arm can be elongated, secondary swing arm is divided into two parts that are uneven in length or equate by back shaft, the acting body that secondary swing arm is connected can be a permanent magnet, this permanent magnet is embedded in the end near piece of being positioned at of secondary swing arm, and be the configuration that repels each other with permanent magnet on the master pendulum arm, the other end of secondary swing arm is equipped with and makes secondary swing arm realize dynamic balancing or statically balanced counterweight, above-mentioned switch pair is made of two fixed contacts and two moving contacts between two fixed contacts, two moving contacts are in the secondary swing arm position of lower wall on its permanent magnet, two fixed contacts corresponding with it can be installed on the insulating support by the fixed contact frame, two moving contacts and secondary swing arm and back shaft electric connection.

Above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, the other end of secondary swing arm is equipped with and makes secondary swing arm realize dynamic balancing or statically balanced counterweight, moving contact and secondary swing arm and back shaft electric connection, the acting body that secondary swing arm is connected can be a spring mechanism, this spring mechanism has stage clip and dials frame, dial frame and be fixed in the position of its permanent magnet madial wall on the master pendulum arm, stage clip is located at and is dialled between frame and the secondary swing arm, the one end is spacing by the spring base of dialling on the frame, and its other end is spacing by the spring base on the end of the permanent magnet on the close master pendulum arm of secondary swing arm.

The back shaft that axis body that above-mentioned secondary swing arm rotates around it and master pendulum arm rotate around it can be coaxial, secondary swing arm is positioned at a side of the permanent magnet on the close master pendulum arm of back shaft, secondary swing arm can be herringbone, its lambdoid two footmuffs are loaded on the back shaft, above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, moving contact and secondary swing arm and back shaft electric connection, the acting body that secondary swing arm is connected can be a spring mechanism, this spring mechanism has the frame and the stage clip between its lambdoid two pin of secondary swing arm of dialling, dial frame and be fixed in the position of its counterweight madial wall on the master pendulum arm, stage clip is located at and is dialled between frame and the secondary swing arm, the one end is spacing by the spring base of dialling on the frame, and its other end is spacing by the spring base of its lambdoid two pin junctions of secondary swing arm.

The back shaft that axis body that above-mentioned secondary swing arm rotates around it and master pendulum arm rotate around it can be coaxial, secondary swing arm is positioned at a side of the permanent magnet on the close master pendulum arm of back shaft, secondary swing arm is herringbone, its lambdoid two footmuffs are loaded on the back shaft, above-mentioned switch pair is made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, moving contact and secondary swing arm and back shaft electric connection, the acting body that secondary swing arm is connected can be an extension spring, the position of this extension spring one end hook its counterweight madial wall on master pendulum arm, its other end is hooked in its lambdoid two pin junctions of secondary swing arm, and back shaft disconnects through the place in extension spring.

The axis body that above-mentioned secondary swing arm rotates around it can be the supporter of the band V-shaped groove on the insulating support, the acting body that secondary swing arm is connected can be a stage clip, above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, secondary swing arm can be cross, its criss-cross two trailing arms have the blade that cooperates with it in the V-shaped groove that inserts on the supporter and constitute the pivot point of secondary swing arm, end near the counterweight on the master pendulum arm in its criss-cross two transverse arms is equipped with above-mentioned moving contact, end near the permanent magnet on the master pendulum arm in its criss-cross two transverse arms is equipped with spring base, one end of above-mentioned stage clip is spacing by this spring base, the other end of stage clip is spacing by the spring base of its permanent magnet madial wall position on the master pendulum arm, be installed on the insulating support moving contact and secondary swing arm and supporter electric connection by the fixed contact frame with corresponding two fixed contacts of moving contact.

The axis body that above-mentioned secondary swing arm rotates around it can be the supporter of the band V-shaped groove on the insulating support, secondary swing arm can be herringbone, its lambdoid two pin have the blade that cooperates with it in the V-shaped groove that inserts on the supporter and constitute the pivot point of secondary swing arm, above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the counterweight on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, moving contact and secondary swing arm and supporter electric connection, the acting body that secondary swing arm is connected can be an extension spring, the position of this extension spring one end hook its permanent magnet madial wall on master pendulum arm, its other end are hooked in its lambdoid two pin junctions of secondary swing arm.

The axis body that above-mentioned secondary swing arm rotates around it can be the supporter of the band V-shaped groove on the insulating support, i.e. the secondary swing arm of the acting body that secondary swing arm is connected itself for making by elastic metallic material, above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the counterweight on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, moving contact and secondary swing arm and supporter electric connection, secondary swing arm has pulling-on piece and is positioned at the resilient legs of two embowments of pulling-on piece side, these two resilient legs have the blade that cooperates with it in the V-shaped groove that inserts on the supporter and constitute the pivot point of secondary swing arm, and pulling-on piece is connected with the position of its permanent magnet madial wall of master pendulum arm.

The axis body that above-mentioned secondary swing arm rotates around it can be the supporter of the band V-shaped groove on the insulating support, i.e. the secondary swing arm of the acting body that secondary swing arm is connected itself for making by elastic metallic material, above-mentioned switch pair can be made of two fixed contacts and a moving contact between two fixed contacts, moving contact is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm, two fixed contacts corresponding with it are installed on the insulating support by the fixed contact frame, moving contact and secondary swing arm, supporter, the master pendulum arm and the back shaft electric connection of conduction, secondary swing arm has pulling-on piece and is positioned at the resilient legs of two embowments of pulling-on piece side, these two resilient legs have the blade that cooperates with it in the V-shaped groove that inserts on the supporter and constitute the pivot point of secondary swing arm, and pulling-on piece is connected with the position of its counterweight madial wall of master pendulum arm.

Above-mentioned insulating support can be hollow form, its fixed cover is loaded in the shell, back shaft passes its two ends of insulating support and is fixed on the inwall of insulating support, master pendulum arm can be the frame-shaped structure of hollow, master pendulum arm is horizontally set in insulating support, the long axis of master pendulum arm is vertical with back shaft, master pendulum arm is divided into two parts that are uneven in length or equate by this back shaft, the above-mentioned quantity that is installed on the permanent magnet on the master pendulum arm can be one, it is embedded in the end near piece of being positioned at of master pendulum arm, its N, S utmost point line direction is consistent with the long axis direction of master pendulum arm, the other end of master pendulum arm can be equipped with and make master pendulum arm realize dynamic balancing or statically balanced counterweight, above-mentioned switch pair is made of two fixed contacts and two moving contacts corresponding with it, two moving contacts directly are installed on and come back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm of conduction of electric cut-in pressure, be on the master pendulum arm position of lower wall on its permanent magnet, two fixed contacts corresponding with it are installed on the inwall of insulating support by the fixed contact frame, the master pendulum arm that comes an angle of back rotation around back shaft is respectively by two fixed contact upper limits and lower limit, two moving contacts and master pendulum arm and back shaft electric connection.

Above-mentioned work package can be an elastic mechanism, this elastic mechanism is positioned at the cavity of the hollow of master pendulum arm, it has retractable stem stem and is set in stage clip on the stem stem, and the blade that stretch out its permanent magnet madial wall position on blade that stretches out on the insulating support and the master pendulum arm enters respectively and cooperates with it in the V-shaped groove at stem stem two ends and stem stem and stage clip is spacing.Work package can be permanent magnet, this permanent magnet by the insulating support support fixation and with master pendulum arm on the permanent magnet configuration that repels each other.Two of can also be to be made by permeability magnetic material of work package attract pieces, and these two attract piece to be located at respectively on the insulating support and above-mentioned two corresponding positions of fixed contact.Work package can also be fixed contact itself.Fixed contact adopts and not only to conduct electricity but also the material of magnetic conduction, and the method that also can adopt electric conducting material and permeability magnetic material to combine is made.Certainly, work package can also be other structure.

Above-mentioned insulating support can comprise two sections insulators of the inwall both sides of being fixed in shell and be fixed in shell its away near the interlude insulator on the inwall of an end of piece, above-mentioned master pendulum arm can be frame-shaped structure, master pendulum arm can be vertical setting in the enclosure, the long axis of master pendulum arm is vertical with back shaft, the quantity that is installed on the permanent magnet on the master pendulum arm can be one, it is embedded in the side of master pendulum arm, its N, S utmost point line direction becomes 90 ° with the long axis of master pendulum arm, back shaft passes the endoporus of this permanent magnet, its two ends are fixed on two sections insulators of insulating support, above-mentioned switch pair can be made of two fixed contacts and two moving contacts corresponding with it, two moving contacts directly are installed on and come back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm of conduction of electric cut-in pressure, be in the position of its permanent magnet madial wall on the master pendulum arm, two fixed contacts corresponding with it are located on the madial wall of interlude insulator of insulating support, come the master pendulum arm of back rotation spacing by two fixed contacts respectively around back shaft, two moving contacts and master pendulum arm and back shaft electric connection, above-mentioned work package is not only conducted electricity but also above-mentioned two fixed contacts that the material of magnetic conduction or the method that adopts electric conducting material and permeability magnetic material to combine are made for adopting.

The above-mentioned quantity that is installed on the permanent magnet on the master pendulum arm can be two, they are embedded in the side of master pendulum arm, its N, S pole field direction same polarity or heteropolarity configuration, their N, S utmost point line direction become 90 ° with the long axis of master pendulum arm, and back shaft passes between these two blocks of permanent magnets its two ends and is fixed on two sections insulators of insulating support.Above-mentioned work package is not only conducted electricity but also at least one above-mentioned fixed contact that the material of magnetic conduction or the method that adopts electric conducting material and permeability magnetic material to combine are made for adopting.

The present invention by be installed on the external movement object near piece (outer magnetic) and be installed in switch body on the stationary object (being the insulating support installed of shell and Qi Nei, switch pair, master pendulum arm etc.) and constitute, have relative motion near piece and switch body.Be loaded on permanent magnet on the master pendulum arm near the magnetic drive switch body inside of piece by magnetic field, make master pendulum arm come angle of back rotation, directly or indirectly drive moving contact and fixed contact is switched on or switched off.The present invention compares near switch with the electronic type that the first kind employing active element in the above-mentioned background technology is made, and itself need not working power, and operating voltage range is wide, and anti-overvoltage capabilities is strong, and pressure drop is little, and is easy to use, good reliability.It is compared with the magnetic switch that second class adopts tongue tube, the reed pipe that wets is made in the above-mentioned background technology, and the electric contact capacity is big, withstand voltage height, and contact resistance is little.It is compared with the similar switch that other need not contact-impact, because the present invention has adopted unique master pendulum arm formula structure, make the switch compact overall structure, simply, volume is little, and system configuration is reasonable, reliability strengthens greatly, moreover, be furnished with balance weight on the master pendulum arm, strengthened the shock resistance and the practicality of switch.The present invention can replace travel switch fully, its be more suitable for moist, under water, adverse circumstances such as inflammable and explosive, the plateau of burn into use.Use near switch even there is the non-magnet material isolation also not influence this in switch body with between near piece, this point is that travel switch is not accomplished.It can make difformity, size, and mounting means near switch, adopt the working method of cable or binding post outlet method and monostable (automatically reseting) or bistable state (non-automatic resetting), to adapt to the needs of different occasions.

Description of drawings

Fig. 1 is the front view of first embodiment of the invention.

Fig. 2 is the vertical view (not painting near piece) of first embodiment of the invention.

Fig. 3 is the front view of second embodiment of the invention.

Fig. 4, Fig. 5 are respectively front view, the vertical view (not painting near piece) of third embodiment of the invention.

Fig. 6, Fig. 7 are respectively front view, the vertical view (not painting near piece) of four embodiment of the invention.

Fig. 8, Fig. 9 are respectively front view, the vertical view (not painting near piece) of fifth embodiment of the invention.

Figure 10, Figure 11 are respectively front view, the vertical view (not painting near piece) of sixth embodiment of the invention.

Figure 12, Figure 13 are respectively front view, the vertical view (not painting near piece) of seventh embodiment of the invention.

Figure 14, Figure 15 are respectively front view, the vertical view (not painting near piece) of eighth embodiment of the invention.

Figure 16, Figure 17 are respectively front view, the vertical view (not painting near piece) of ninth embodiment of the invention.

Figure 18 is the front view of tenth embodiment of the invention.

Figure 19 is the vertical view (not painting near piece) of tenth embodiment of the invention.

Figure 20 is the front view (not painting near piece) of eleventh embodiment of the invention.

Figure 21 is the front view (not painting near piece) of twelveth embodiment of the invention.

Figure 22 is the front view (not painting near piece) of thirteenth embodiment of the invention.

Figure 23 is the front view of fourteenth embodiment of the invention.

Figure 24 is the right view (not painting near piece) of fifteenth embodiment of the invention.

Figure 25 is the front view of fifteenth embodiment of the invention.

Figure 26 is the front view of sixteenth embodiment of the invention.

Embodiment

As shown in Figure 1 and Figure 2, first embodiment of the present invention have the switch body that is installed on the stationary object, be installed on the external movement object A by permanent magnetic material or permeability magnetic material make near piece 7.Switch pair (or contact sets), insulating support 2, back shaft 16, the master pendulum arm 3 that switch body has the shell 1 made by non-magnet material, be made of at least one fixed contact and at least one moving contact corresponding with it, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.Fixed contact moving contact corresponding with it constitutes such switch pair or the contact sets that existing travel switch, push-button switch, sensitive switch or relay adopts, and can be designed to comprise several to Chang Kai and/or normally-closed contact type.Moving contact and fixed contact connect or disconnect and can adopt the single-break mode, also can adopt the double break point mode.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it in the present embodiment.Shell 1 can be made by non-magnet materials such as copper, aluminium, non-magnetic stainless steel, pottery, glass, rubber, plastics, and its shape can be tubular, as cylindrical shape, square tube shape, can also be other shape, and present embodiment is cylinder (bolt) shape.Be provided with insulating support 2 in the shell 1, insulating support can be the structure of hollow, can be tubular, as cylindrical shape, square tube shape, can also be other shape, the inner chamber of its exterior contour and shell matches, and back shaft 16 and above-mentioned two fixed contacts are installed on the insulating support 2, and back shaft 16 passes its two ends of insulating support and is fixed in (perhaps the two ends of back shaft are by the spacing support of the inwall of insulating support) on the inwall of insulating support.Be equipped with on the back shaft 16 and can come the insulation of an angle of back rotation (rotation) or the master pendulum arm 3 of conduction around it.Master pendulum arm 3 can be made by metal material, also can be made of plastics.Be equipped with one on the master pendulum arm 3 by it and above-mentionedly make master pendulum arm come the permanent magnet 4 of an angle of back rotation near the magneticaction of piece 7.It is that the reciprocating motion of being abutted against nearly piece 7 realizes that master pendulum arm 3 comes back rotation around back shaft 16, the extension of master pendulum arm or master pendulum arm or permanent magnet 4 be respectively by the inwall upper limit and the lower limit of insulating support 2 when master pendulum arm 3 came back rotation around back shaft 16, thereby make master pendulum arm 3 come angle of back rotation around back shaft 16.Above-mentioned moving contact is installed on it to come back rotation to realize that moving contact and fixed contact are that connect or disconnect, that be connected with acting body, be subjected to coming back rotation to influence to make master pendulum arm that the active force of this acting body is changed and coming in the secondary swing arm 9 angle of back rotation, that can conduct electricity around the axis body on the insulating support of master pendulum arm.Above-mentioned master pendulum arm 3 is the frame-shaped structure of hollow, also can be other shape.Master pendulum arm is horizontally set in insulating support, the long axis of master pendulum arm 3 (along the axis of length sides direction) is vertical with back shaft 16, and master pendulum arm 3 is divided into two parts that are uneven in length or equate by this back shaft.Above-mentioned permanent magnet 4 is embedded in the end near piece of being positioned at of master pendulum arm 3, and its N, S utmost point line direction are consistent with the long axis direction of master pendulum arm, and the other end of master pendulum arm can be equipped with and make master pendulum arm realize dynamic balancing or statically balanced counterweight 15.The back shaft 16 that axis body that above-mentioned secondary swing arm 9 rotates around it and master pendulum arm 3 rotate around it is coaxial, and secondary swing arm 9 can be (sheet) strip, and secondary swing arm 9 is divided into two parts that are uneven in length or equate by back shaft 16.The acting body that secondary swing arm is connected with it is positioned at the cavity of the hollow of master pendulum arm 3.The acting body that secondary swing arm 9 is connected is a permanent magnet 8, and this permanent magnet is embedded in the end near piece of being positioned at of secondary swing arm, and is the configuration that repels each other (the interior stain of permanent magnet is represented same polarity in the accompanying drawing) with permanent magnet 4 on the master pendulum arm.The other end of secondary swing arm 9 can be equipped with and make secondary swing arm realize dynamic balancing or statically balanced counterweight 10.Above-mentioned two moving contact 6A, 6B are in the secondary swing arm position of lower wall on its permanent magnet 8, and two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D.The cable 12 (as three-core cable) or the binding post that make dynamic and static contact and external circuit electric connection are housed in the shell.Two moving contact 6A, 6B by secondary swing arm 9, back shaft 16 and a heart yearn in the cable 12 realize being electrically connected (connection) lead to.Two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively.It is hermetically sealed that cable outlet end 13 and embedding 14 are accomplished switch body, and enclosure is filled with insulating gas or vacuumized.Bolt type shell clamp nut 11A, 11B are fixed on the shell 1 of switch body on the fixed object B.Can make by permanent magnet near piece 7, also can make, be fixed on the moving object A by good magnetic conductor (as iron, magnetic stainless steel etc.), with moving object A along the reciprocating motion of the diagram direction of arrow.If made by permanent magnet, it has same polarity (repelling each other) and two kinds of configuration modes of heteropolarity (inhaling mutually) with permanent magnet 4 near piece 7.

If adopt same polarity (repelling each other) configuration mode near piece 7 and permanent magnet 4, when near piece 7 with moving object A along diagram direction of arrow reciprocating motion during through permanent magnet 4, near the magnetic repulsion between piece 7 and the permanent magnet 4 permanent magnet 4 is produced and the rightabout movement tendency of moving object A, thereby make master pendulum arm 3 come angle of back rotation around back shaft 16.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to coming angle of back rotation with master pendulum arm 3 rightabouts, be switched on or switched off with fixed contact 5A and 5B respectively thereby drive moving contact 6A, 6B.

If adopt heteropolarity (inhaling mutually) configuration mode near piece 7 and permanent magnet 4, when near piece 7 with moving object A along diagram direction of arrow reciprocating motion during through permanent magnet 4, make the movement tendency of permanent magnet 4 generations and moving object A equidirectional near the magnetic attraction between piece 7 and the permanent magnet 4, thereby make master pendulum arm 3 come angle of back rotation around back shaft 16.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to coming angle of back rotation with master pendulum arm 3 rightabouts, be switched on or switched off with fixed contact 5A and 5B respectively thereby drive moving contact 6A, 6B.

If when adopting good magnetic conductor to make near piece 7, to have only suction and do not have repulsion, effect is suitable with the permanent magnet of inhaling configuration mutually, is that operating distance is littler.

The work system of the alternative existing fork-shaped rocking arm bistable state travel switch of present embodiment, its range of application is wider, and is safer.The work system of the work system of also alternative existing rocking arm monostable travel switch and pillar monostable travel switch is done spacing usefulness.

As shown in Figure 3, second embodiment of the present invention have the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material make near piece 7.Switch body is with first embodiment.Adopt two permanent magnet 7A, 7B configurations near piece 7, permanent magnet 7A inhales configuration mutually with permanent magnet 4, the configuration that repels each other of permanent magnet 7B and permanent magnet 4.

When moving object A with permanent magnet 7A, 7B when the directions X shown in Fig. 3 moves, permanent magnet 7A is earlier through permanent magnet 4, magnetic field suction makes the movement tendency of permanent magnet 4 generations and moving object A equidirectional, thereby makes master pendulum arm 3 rotate an angle around back shaft 16 to a direction.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to rotating an angle with master pendulum arm 3 rightabouts, make moving contact 6B and fixed contact 5B connection.At this moment, moving object A continues to move to the directions X shown in Fig. 3 with permanent magnet 7A, 7B, permanent magnet 7B is then through permanent magnet 4, magnetic field repulsive force produces and the rightabout movement tendency of moving object A permanent magnet 4, thereby makes master pendulum arm 3 rotate an angle around back shaft 16 to another direction.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to rotating an angle with master pendulum arm 3 rightabouts, secondary swing arm 9 makes moving contact 6A and fixed contact 5A connection.Moving object A is being with permanent magnet 7A, 7B to return, when the Y direction shown in Fig. 3 is moved, permanent magnet 7B is earlier through permanent magnet 4, magnetic field repulsive force produces and the rightabout movement tendency of moving object A permanent magnet 4, thereby makes master pendulum arm 3 rotate an angle around back shaft 16 to a direction.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to rotating an angle with master pendulum arm 3 rightabouts, secondary swing arm 9 makes moving contact 6B and fixed contact 5B connection.At this moment, moving object A continues to move to the Y direction shown in Fig. 3 with permanent magnet 7A, 7B, permanent magnet 7A is through permanent magnet 4, magnetic field suction makes the movement tendency of permanent magnet 4 generations and moving object A equidirectional, thereby makes master pendulum arm 3 rotate an angle around back shaft 16 to another direction.Simultaneously, permanent magnet 4 can promote permanent magnet 8 by magnetic repulsion, make secondary swing arm 9 around back shaft 16 to rotating an angle with master pendulum arm 3 rightabouts, make moving contact 6A and fixed contact 5A connection.By above course of action as can be seen, no matter moving object A still moves to the Y direction to the motion of the directions X shown in Fig. 3, this near switch always in the S interval shown in Fig. 3 (promptly two permanent magnet 7A, 7B centre-to-centre spacing) moving contact 6B and fixed contact 5B connect moving contact 6B and fixed contact 5B disconnection the S interval outside.Perhaps can be conversely speaking, this near switch always in the S interval moving contact 6A and fixed contact 5A disconnect moving contact 6A and fixed contact 5A connection the S interval outside.This using method is identical with existing wheeled monostable travel switch using method, better effects if, and almost not wearing and tearing, and also the distance in the S interval shown in Fig. 3 can arbitrarily be adjusted.The adjustment of the distance in this S interval is then very difficult for existing wheeled monostable travel switch, and when this distance was very big, the wearing and tearing of travel switch wheel were very serious.

As Fig. 4, shown in Figure 5, the 3rd embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The back shaft 16 that axis body that secondary swing arm 9 rotates around it and master pendulum arm 3 rotate around it is coaxial.The above structure of present embodiment is with embodiment one (or embodiment two), different is that above-mentioned switch pair is made of two fixed contacts and a moving contact 6A corresponding with it, and moving contact 6A is installed on an end (other end of secondary swing arm is equipped with and makes secondary swing arm realize dynamic balancing or statically balanced counterweight 10) of the permanent magnet 4 on the close master pendulum arm of secondary swing arm.Two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, and moving contact 6A is between two fixed contact 5A, 5B.Moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by secondary swing arm 9, back shaft 16 with a heart yearn in the cable 12.The acting body that secondary swing arm 9 is connected is a spring mechanism, and this spring mechanism has stage clip 18A and dials frame 17A.Dial frame 17A and be fixed in the position of its permanent magnet 4 madial walls on the master pendulum arm 3, stage clip 18A is located at and dials between frame 17A and the secondary swing arm 9, the one end is spacing by the spring base of dialling on the frame 17A, and its other end is spacing by the spring base on the end of the permanent magnet 4 on the close master pendulum arm of secondary swing arm 9.Like this, stir stage clip 18A by dialling frame 17A when master pendulum arm 3 comes back rotation, make secondary swing arm 9 come back rotation, drive moving contact and between two fixed contacts, switch.The using method of present embodiment is identical with embodiment two with embodiment one.

As Fig. 6, shown in Figure 7, the 4th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The back shaft 16 that axis body that secondary swing arm 9 rotates around it and master pendulum arm 3 rotate around it is coaxial.The above structure of present embodiment is with embodiment one (or embodiment two), above-mentioned secondary swing arm 9 that different is is positioned at a side of the permanent magnet 4 on the close master pendulum arm of back shaft 16, secondary swing arm 9 can be (sheet) herringbone, its lambdoid two footmuffs are loaded on the back shaft 16, come back rotation in order to secondary swing arm 9 around back shaft 16.Above-mentioned switch pair is made of two fixed contact 5A, 5B and a moving contact 6A corresponding with it, and moving contact 6A is installed on an end of the permanent magnet 4 on the close master pendulum arm of secondary swing arm 9.Two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, and moving contact 6A is between two fixed contact 5A, 5B.Moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by secondary swing arm 9, back shaft 16 with a heart yearn in the cable 12.The acting body that secondary swing arm 9 is connected is a spring mechanism, and this spring mechanism has the frame 17B and the stage clip 18B between its lambdoid two pin of secondary swing arm of dialling.Dial frame 17B and be fixed in the position of its counterweight 15 madial walls on the master pendulum arm, stage clip 18B is located at and dials between frame 17B and the secondary swing arm 9, and the one end is spacing by the spring base of dialling on the frame 17B, and its other end is spacing by the spring base of its lambdoid two pin junctions of secondary swing arm 9.Like this, stir stage clip 18B by dialling frame 17B when master pendulum arm 3 comes back rotation, make secondary swing arm 9 come back rotation, drive moving contact and between two fixed contacts, switch.The using method of present embodiment is identical with embodiment two with embodiment one.

As Fig. 8, shown in Figure 9, the 5th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The back shaft 16 that axis body that secondary swing arm 9 rotates around it and master pendulum arm 3 rotate around it is coaxial.The above structure of present embodiment is with embodiment one (or embodiment two), above-mentioned secondary swing arm 9 that different is is positioned at a side of the permanent magnet 4 on the close master pendulum arm of back shaft 16, secondary swing arm 9 can be (sheet) herringbone, its lambdoid two footmuffs are loaded on the back shaft 16, come back rotation in order to secondary swing arm 9 around back shaft 16.Above-mentioned switch pair is made of two fixed contact 5A, 5B and a moving contact 6A corresponding with it, moving contact 6A is installed on an end of the permanent magnet 4 on the close master pendulum arm of secondary swing arm 9, two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, and moving contact 6A is between two fixed contact 5A, 5B.Moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by secondary swing arm 9, back shaft 16 with a heart yearn in the cable 12.The acting body that secondary swing arm 9 is connected is an extension spring 19, the position of these extension spring 19 1 end hooks its counterweight 15 madial walls on master pendulum arm, and its other end is hooked in its lambdoid two pin junctions of secondary swing arm 9.Back shaft 16 disconnects through the place in extension spring 19.Like this, by the secondary swing arm 9 of extension spring 19 pullings, make secondary swing arm come back rotation when master pendulum arm 3 comes back rotation, drive moving contact and between two fixed contacts, switch.The using method of present embodiment is identical with embodiment two with embodiment one.

As Figure 10, shown in Figure 11, the 6th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The above structure of present embodiment is with embodiment one (or embodiment two), different is that the axis body that secondary swing arm 9 rotates around it is the supporter 21A of the band V-shaped groove on the insulating support 2, this supporter is an overall structure (perhaps being the branch body structure), it vertically passes the cavity of the hollow of master pendulum arm 3, and its two ends are fixed on the inwall of insulating support.The acting body that secondary swing arm 9 is connected is a stage clip 20.Above-mentioned switch pair is by two fixed contact 5A, 5B and a moving contact 6A corresponding with it constitute, secondary swing arm 9 can be (sheet) cross, its criss-cross two trailing arms have the blade that cooperates with it in the V-shaped groove that inserts on the supporter 21A and constitute the pivot point of secondary swing arm, end near the counterweight 15 on the master pendulum arm in its criss-cross two transverse arms is equipped with above-mentioned moving contact 6A (two the fixed contact 5As corresponding with it, 5B is by fixed contact frame 5C, 5D is installed on the insulating support 2, moving contact 6A is positioned at two fixed contact 5A, between the 5B), end near the permanent magnet 4 on the master pendulum arm in its criss-cross two transverse arms is equipped with spring base, one end of above-mentioned stage clip 20 is spacing by this spring base, and the other end of stage clip 20 is spacing by the spring base of its permanent magnet 4 madial wall positions on the master pendulum arm.Like this, when master pendulum arm 3 came back rotation around back shaft 16, it was that pivot point comes back rotation with its blade that stage clip 20 makes secondary swing arm 9, thereby drive moving contact and fixed contact are switched on or switched off.The supporter 21A of band V-shaped groove is made by electric conducting material, and moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by a heart yearn in secondary swing arm 9, supporter 21A and the cable 12.The using method of present embodiment is identical with embodiment two with embodiment one.

As shown in Figure 12 and Figure 13, the 7th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The above structure of present embodiment is with embodiment one (or embodiment two), different is that the axis body that secondary swing arm 9 rotates around it is the supporter 21B of the band V-shaped groove on the insulating support 2, this supporter is an overall structure (perhaps being the branch body structure), it vertically passes the cavity of the hollow of master pendulum arm 3, and its two ends are fixed on the inwall of insulating support.Secondary swing arm 9 is herringbone in the form of sheets, and its lambdoid two pin have the blade that cooperates with it in the V-shaped groove that inserts on the supporter 21B and constitute the pivot point of secondary swing arm.Above-mentioned switch pair is made of two fixed contact 5A, 5B and a moving contact 6A corresponding with it, moving contact 6A is installed on an end of the counterweight 15 on the close master pendulum arm of secondary swing arm 9, two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, and moving contact 6A is between two fixed contact 5A, 5B.Moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by a heart yearn in secondary swing arm 9, supporter 21B and the cable 12.The acting body that secondary swing arm 9 is connected is an extension spring 22, the position of these extension spring 22 1 end hooks its permanent magnet 4 madial walls on master pendulum arm, and its other end is hooked in its lambdoid two pin junctions of secondary swing arm 9.Like this, when master pendulum arm 3 came back rotation around back shaft 16, it was that pivot point comes back rotation with its blade that extension spring 22 makes secondary swing arm 9, thereby drive moving contact and fixed contact are switched on or switched off.The supporter 21B of band V-shaped groove is made by electric conducting material.The using method of present embodiment is identical with embodiment two with embodiment one.

As Figure 14, shown in Figure 15, the 8th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The above structure of present embodiment is with embodiment one (or embodiment two), and different is that the axis body that secondary swing arm 9 rotates around it is the supporter 21C of the band V-shaped groove on the insulating support 2.This supporter is an overall structure (perhaps being the branch body structure), and it vertically passes the cavity of the hollow of master pendulum arm 3, and its two ends are fixed on the inwall of insulating support.The acting body that secondary swing arm 9 is connected is promptly own for the secondary swing arm 9 of being made by elastic metallic material.Above-mentioned switch pair is made of two fixed contact 5A, 5B and a moving contact 6A corresponding with it, moving contact 6A is installed on an end of the counterweight 15 on the close master pendulum arm of secondary swing arm 9, two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, moving contact 6A is between two fixed contact 5A, 5B, and moving contact 6A realizes electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by a heart yearn in secondary swing arm 9, supporter 21C and the cable 12.Secondary swing arm 9 has pulling-on piece 9C and is positioned at resilient legs 9A, the 9B of two embowments of pulling-on piece side, these two resilient legs have the blade that cooperates with it in the V-shaped groove that inserts on the supporter 21C and constitute the pivot point of secondary swing arm, and pulling-on piece 9C is connected with the position of its permanent magnet 4 madial walls of master pendulum arm 3.Like this, when master pendulum arm 3 came back rotation around back shaft 16, it was that pivot point comes back rotation with its blade that pulling-on piece makes secondary swing arm 9, drove moving contact and fixed contact and was switched on or switched off.The using method of present embodiment is identical with embodiment two with embodiment one.

As Figure 16, shown in Figure 17, the 9th embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, be connected with secondary swing arm 9, the axis body of acting body.The above structure of present embodiment is with embodiment one (or embodiment two), and different is that the axis body that secondary swing arm 9 rotates around it is the supporter 21D of the band V-shaped groove on the insulating support 2.This supporter is an overall structure (perhaps being the branch body structure), and it vertically passes the cavity of the hollow of master pendulum arm 3, and its two ends are fixed on the inwall of insulating support.Secondary swing arm 9 with acting body promptly be the secondary swing arm of making 9 itself by elastic metallic material.Above-mentioned switch pair is made of two fixed contact 5A, 5B and a moving contact 6A corresponding with it, moving contact 6A is installed on an end of the permanent magnet 4 on the close master pendulum arm of secondary swing arm 9, two fixed contact 5A, the 5Bs corresponding with it are installed on the insulating support 2 by fixed contact frame 5C, 5D, and moving contact 6A is between two fixed contact 5A, 5B.Moving contact (6A) is realized electric connection (two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively) by the master pendulum arm 3 and the back shaft 16 of secondary swing arm 9, supporter 21D, conduction with a heart yearn in the cable 12.Secondary swing arm 9 has pulling-on piece 9F and is positioned at resilient legs 9D, the 9E of two embowments of pulling-on piece side, these two resilient legs have the blade that cooperates with it in the V-shaped groove that inserts on the supporter 21D and constitute the pivot point of secondary swing arm, and pulling-on piece 9F is connected with the position of its counterweight 15 madial walls of master pendulum arm.Like this, when master pendulum arm 3 came back rotation around back shaft 16, it was that pivot point comes back rotation with its blade that pulling-on piece makes secondary swing arm 9, drove moving contact and fixed contact and was switched on or switched off.The using method of present embodiment is identical with embodiment two with embodiment one.

As Figure 18, shown in Figure 19, the of the present invention ten embodiment have the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material or permeability magnetic material make near piece 7.Switch pair (or contact sets), insulating support 2, back shaft 16, the master pendulum arm 3 that switch body has the shell 1 made by non-magnet material, be made of at least one fixed contact and at least one moving contact corresponding with it, be installed on permanent magnet 4 and counterweight 15 on the master pendulum arm, make moving contact and fixed contact when connection, keep the two to electrically contact the work package of pressure.Fixed contact moving contact corresponding with it constitutes such switch pair or the contact sets that existing travel switch, push-button switch, sensitive switch or relay adopts, and can be designed to comprise several to Chang Kai and/or normally-closed contact type.Moving contact and fixed contact connect or disconnect and can adopt the single-break mode, also can adopt the double break point mode.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it in the present embodiment.Be provided with insulating support 2 in the shell 1, back shaft 16 and above-mentioned fixed contact are installed on this insulating support 2, be equipped with on the back shaft 16 and can come the master pendulum arm 3 of the conduction of an angle of back rotation around it.Be equipped with one on the master pendulum arm 3 by it and above-mentionedly make master pendulum arm come the permanent magnet 4 of an angle of back rotation near the magneticaction of piece 7.Above-mentioned two moving contacts directly are installed on it and come back rotation to realize on the master pendulum arm 3 of the conduction that moving contact and fixed contact connect or disconnect.Above-mentioned insulating support 2 is hollow form, and its fixed cover is loaded in the shell 1, and back shaft 16 passes its two ends of insulating support and is fixed on the inwall of insulating support, and master pendulum arm 3 is the frame-shaped structure of hollow, also can be other shape, and master pendulum arm 3 is made by metal material.Master pendulum arm is horizontally set in insulating support, the long axis of master pendulum arm is vertical with back shaft 16, master pendulum arm is divided into two parts that are uneven in length or equate by this back shaft, the above-mentioned quantity that is installed on the permanent magnet 4 on the master pendulum arm 3 is one, it is embedded in the end near piece of being positioned at of master pendulum arm, its N, S utmost point line direction are consistent with the long axis direction of master pendulum arm, and the other end of master pendulum arm 3 is equipped with and makes master pendulum arm realize dynamic balancing or statically balanced counterweight 15.Above-mentioned two moving contact 6A, 6B directly are installed on the master pendulum arm position of lower wall on its permanent magnet, and two fixed contact 5A, the 5Bs corresponding with it are installed on the inwall of insulating support 2 by fixed contact frame 5C, 5D.Come the master pendulum arm 3 of an angle of back rotation respectively by two fixed contact 5A, 5B upper limit and lower limit around back shaft 16.Two moving contact 6A, 6B realize electric connection by master pendulum arm 3, back shaft 16 with a heart yearn in the cable 12, and two fixed contact 5A, 5B then realize electric connection by two heart yearns in addition of fixed contact frame 5C, 5D and cable 12 respectively.Simultaneously, work package can be an elastic mechanism in the present embodiment, and this elastic mechanism is positioned at the cavity of the hollow of master pendulum arm 3.It has retractable stem stem 25 and the stage clip 24 that is set on the stem stem.The blade 23 that stretch out its permanent magnet 4 madial wall positions on blade 26 that stretches out on the insulating support 2 and the master pendulum arm 3 enters respectively in the V-shaped groove at stem stem two ends and cooperates with it, and stem stem 25 and stage clip 24 is spacing.Like this, master pendulum arm 3 drives moving contact 6A, 6B and fixed contact 5A, 5B and is switched on or switched off with rotating around back shaft 16 near the reciprocating motion of piece 7.Present embodiment is the bistable operation mode.It is simple in structure, and volume can dwindle.The using method of present embodiment is identical with embodiment two with embodiment one.

As shown in figure 20, the 11 embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, is installed on permanent magnet 4 and counterweight 15 on the master pendulum arm.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it.Two moving contacts directly are installed on it and come back rotation to realize on the master pendulum arm 3 of the conduction that moving contact and fixed contact connect or disconnect.The above structure of present embodiment is with embodiment ten, and the work package that different is in the present embodiment can also be permanent magnet 27, this permanent magnet 27 by insulating support 2 support fixation and with master pendulum arm on permanent magnet 4 configuration that repels each other.The magnetic repulsion of permanent magnet 27 and permanent magnet 4 can make the pressure that electrically contacts that keeps suitable between the dynamic and static contact.The using method of present embodiment is identical with embodiment two with embodiment one.

As shown in figure 21, the 12 embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, is installed on permanent magnet 4 and counterweight 15 on the master pendulum arm.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it.Two moving contacts directly are installed on it and come back rotation to realize on the master pendulum arm 3 of the conduction that moving contact and fixed contact connect or disconnect.The above structure of present embodiment is with embodiment ten, the work package that different is in the present embodiment can also be that two of being made by permeability magnetic material attract piece 28A, 28B, and these two attract piece to be located at respectively on the insulating support 2 and above-mentioned two corresponding positions of fixed contact 5A, 5B.Attract piece 28A, the size of 28B, shape, position by regulating two, can make the pressure that electrically contacts that keeps suitable between the dynamic and static contact.The using method of present embodiment is identical with embodiment two with embodiment one.

As shown in figure 22, the 13 embodiment of the present invention have switch body, near piece 7.Switch body has shell 1, switch pair, insulating support 2, back shaft 16, master pendulum arm 3, is installed on permanent magnet 4 and counterweight 15 on the master pendulum arm.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it.Two moving contacts directly are installed on it and come back rotation to realize on the master pendulum arm 3 of the conduction that moving contact and fixed contact connect or disconnect.The above structure of present embodiment is with embodiment ten, and the work package that different is in the present embodiment can also be fixed contact 5A, 5B itself.Fixed contact 5A, 5B adopt and not only to conduct electricity but also the material of magnetic conduction, and the method that also can adopt electric conducting material and permeability magnetic material to combine is made.By regulating what of permeability magnetic material, when moving contact 6A and fixed contact 5A or moving contact 6B and fixed contact 5B were connected, permanent magnet 4 kept suitable suction with fixed contact so that between the dynamic and static contact maintenance necessity electrically contact pressure.Certainly, work package can also be other structure, and is not limited only to above-mentioned four kinds of execution modes.

As shown in figure 23, the 14 embodiment of the present invention have the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material or permeability magnetic material make near piece 7.Switch pair, insulating support 2, back shaft 16, the master pendulum arm 3 that switch body has the shell 1 made by non-magnet material, be made of at least one fixed contact and at least one moving contact corresponding with it, be installed on permanent magnet 4, work package on the master pendulum arm.Fixed contact moving contact corresponding with it constitutes such switch pair or the contact sets that existing travel switch, push-button switch, sensitive switch or relay adopts, and can be designed to comprise several to Chang Kai and/or normally-closed contact type.Moving contact and fixed contact connect or disconnect and can adopt the single-break mode, also can adopt the double break point mode.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it in the present embodiment.Be provided with insulating support 2 in the shell 1, back shaft 16 and above-mentioned fixed contact are installed on this insulating support 2, be equipped with on the back shaft 16 and can come the master pendulum arm 3 of the conduction of an angle of back rotation around it.Be equipped with one on the master pendulum arm 3 by it and above-mentionedly make master pendulum arm come the permanent magnet 4 of an angle of back rotation near the magneticaction of piece 7.Above-mentioned two moving contacts directly are installed on it and come back rotation to realize on the master pendulum arm 3 of the conduction that moving contact and fixed contact connect or disconnect.Above-mentioned insulating support 2 comprise two sections insulators of the inwall both sides of being fixed in shell 1 and be fixed in shell its away near the interlude insulator on the inwall of an end of piece.Above-mentioned master pendulum arm 3 is a frame-shaped structure, master pendulum arm is vertical setting in the enclosure, and the long axis of master pendulum arm 3 is vertical with back shaft 16, and the quantity that is installed on the permanent magnet 4 on the master pendulum arm 3 is one, it is embedded in the side of master pendulum arm, and its N, S utmost point line direction become 90 ° with the long axis of master pendulum arm.Its two ends of endoporus that back shaft 16 passes this permanent magnet 4 are fixed on the two ends section insulator of insulating support.Permanent magnet 4 is accomplished static balance and dynamic balancing with master pendulum arm 3 integral body.Above-mentioned two moving contact 6A, 6B directly are installed on the position of its permanent magnet madial wall on the master pendulum arm, and two fixed contact 5A, the 5Bs corresponding with it are located on the madial wall of interlude insulator of insulating support 2.Come the master pendulum arm 3 of back rotation spacing by two fixed contact 5A, 5B respectively around back shaft 16.Two moving contact 6A, 6B realize electric connection by master pendulum arm 3 and back shaft 16 with a heart yearn in the cable 12, and two fixed contact 5A, 5B then realize electric connection with two heart yearns in addition of cable 12 respectively.Cable 12 horizontal outlets, it is hermetically sealed that cable outlet end 13 and embedding 14 are accomplished switch body.Shell 1 with switch body during use is fixed on the fixed object by its screw hole.Above-mentioned work package is two fixed contacts itself, fixed contact 5A and 5B can be respectively with not only conducting electricity but also the material of magnetic conduction, the method that also can adopt electric conducting material and permeability magnetic material to combine is made.By regulating what of permeability magnetic material, when moving contact 6A and fixed contact 5A or moving contact 6B and fixed contact 5B are connected, permanent magnet 4 keeps suitable suction with fixed contact, so that keep necessary electrically contacting pressure and keep stable state between the dynamic and static contact, present embodiment is the bistable state mode.When near piece 7 with moving object A along direction of arrow reciprocating motion shown in Figure 23 during through switch body, magnetic force orders about master pendulum arm 3 and rotates around back shaft 16, thereby drives moving contact 6A and fixed contact 5A or moving contact 6B and fixed contact 5B connection, disconnection.Present embodiment can make switch body realize flattening, and volume is little.The using method of present embodiment is identical with embodiment two with embodiment one.

As Figure 24, shown in Figure 25, the 15 embodiment of the present invention have the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material or permeability magnetic material make near piece 7.Switch pair, insulating support 2, back shaft 16, the master pendulum arm 3 that switch body has the shell 1 made by non-magnet material, be made of at least one fixed contact and at least one moving contact corresponding with it, be installed on permanent magnet 4, work package on the master pendulum arm.The switch pair is made of two fixed contact 5A, 5B and two moving contact 6A, the 6B corresponding with it.The above structure of present embodiment is with embodiment 14, the quantity that different is is installed on the permanent magnet 4 on the master pendulum arm 3 is two, be permanent magnet 4A and permanent magnet 4B, they are embedded in the side of master pendulum arm 3, its N, S pole field direction same polarity configuration (referring to the stain in permanent magnet 4A, the 4B among the figure, stain is represented same polarity).Their N, S utmost point line direction become 90 ° with the long axis of master pendulum arm.Back shaft 16 passes between these two blocks of permanent magnets its two ends and is fixed on two sections insulators of insulating support, and permanent magnet 4A and permanent magnet 4B and master pendulum arm 3 integral body are accomplished static balance and dynamic balancing.Above-mentioned two moving contact 6A, 6B are in the position of its two permanent magnet madial walls on the master pendulum arm.The using method of present embodiment is identical with embodiment two with embodiment one.

As shown in figure 26, the 16 embodiment of the present invention is similar to the 15 embodiment, different only be permanent magnet 4A and the permanent magnet 4B that is embedded in the side of master pendulum arm 3, its N, S pole field direction heteropolarity configuration (referring to the stain in permanent magnet 4A, the 4B among the figure, stain is represented same polarity).Present embodiment can only be used permanent magnet near piece 7, and it is consistent with diagram that its N, S pole field direction need keep.Work package is a fixed contact 5A.Fixed contact 5A can be with not only conducting electricity but also the material of magnetic conduction, and the method that also can adopt electric conducting material and permeability magnetic material to combine is made, and making it has a suitable suction with permanent magnet 4A.And fixed contact 5B only uses the non-magnetic material of conduction, and 4B does not have suction with permanent magnet.When near piece 7 with moving object A along the direction of arrow shown in Figure 26 during away from switch body, the suction of permanent magnet 4A and fixed contact 5A makes master pendulum arm 3 rotate counterclockwise around back shaft 16, drives moving contact 6A and fixed contact 5A connection.When near piece 7 with moving object A along the direction of arrow shown in Figure 26 when the switch body, permanent magnet 4A with inhales mutually near piece 7, permanent magnet 4B with repel each other near piece 7, master pendulum arm 3 is clockwise rotated, drive moving contact 6B and fixed contact 5B connection around back shaft 16.Present embodiment is a monostable switch.

Claims (16)

1, a kind of pivoted magnet proximity switch, has the switch body that is installed on the stationary object, be installed on the external movement object by permanent magnetic material or permeability magnetic material make near piece, switch body has the shell of being made by non-magnet material, the switch pair that constitutes by at least one fixed contact and at least one moving contact corresponding with it, it is characterized in that being provided with in the described shell (1) insulating support (2), back shaft (16) and above-mentioned fixed contact are installed on this insulating support (2), be equipped with on the back shaft (16) and can come the insulation of an angle of back rotation or the master pendulum arm (3) of conduction around it, be equipped with at least one on the master pendulum arm (3) by itself and the above-mentioned permanent magnet (4) that makes master pendulum arm come an angle of back rotation near the magneticaction of piece, moving contact directly is installed on and comes back rotation to realize that moving contact and fixed contact connect or disconnect with it to keep the master pendulum arm (3) of the conduction of electric cut-in pressure to go up or be installed on it by work package coming back rotation realization moving contact and fixed contact to connect or disconnect, be connected with acting body, be subjected to master pendulum arm come back rotation to influence to make master pendulum arm that the active force of this acting body is changed and axis body on insulating support comes an angle of back rotation, in the secondary swing arm (9) that can conduct electricity.

2, according to claim 1 near switch, it is characterized in that above-mentioned insulating support (2) is hollow structure, its fixed cover is loaded in the shell (1), back shaft (16) passes its two ends of insulating support and is fixed on the inwall of insulating support, master pendulum arm (3) is the frame-shaped structure of hollow, master pendulum arm is horizontally set in insulating support, the master pendulum arm (3) that comes an angle of back rotation around back shaft (16) is respectively by the inwall upper limit and the lower limit of insulating support, the long axis of master pendulum arm is vertical with back shaft (16), master pendulum arm (3) is divided into two parts that are uneven in length or equate by this back shaft, the above-mentioned quantity that is installed on the permanent magnet (4) on the master pendulum arm (3) is one, it is embedded in the end near piece of being positioned at of master pendulum arm (3), its N, S utmost point line direction is consistent with the long axis direction of master pendulum arm, the other end of master pendulum arm is equipped with and makes master pendulum arm realize dynamic balancing or statically balanced counterweight (15), above-mentioned moving contact is installed on it and comes back rotation to realize what moving contact and fixed contact connected or disconnected, be connected with acting body, be subjected to master pendulum arm come back rotation to influence to make master pendulum arm that the active force of this acting body is changed and axis body on insulating support comes an angle of back rotation, in the secondary swing arm (9) that can conduct electricity, the acting body that secondary swing arm is connected with it is positioned at the cavity of the hollow of master pendulum arm (3).

3, according to claim 2 near switch, it is characterized in that the back shaft (16) that axis body that above-mentioned secondary swing arm (9) rotates around it and master pendulum arm (3) rotate around it is coaxial, secondary swing arm (9) is elongated, secondary swing arm (9) is divided into two parts that are uneven in length or equate by back shaft (16), the acting body that secondary swing arm (9) is connected is a permanent magnet (8), this permanent magnet is embedded in the end near piece of being positioned at of secondary swing arm, and be the configuration that repels each other with permanent magnet (4) on the master pendulum arm, the other end of secondary swing arm (9) is equipped with and makes secondary swing arm realize dynamic balancing or statically balanced counterweight (10), above-mentioned switch pair is by two fixed contact (5A, 5B) and two moving contact (6A between two fixed contacts, 6B) constitute, two moving contact (6A, 6B) be in the position that its permanent magnet (8) is gone up lower wall in the secondary swing arm, two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2) two moving contact (6A, 6B) with secondary swing arm (9) and back shaft (16) electric connection.

4, according to claim 2 near switch, it is characterized in that the back shaft (16) that axis body that above-mentioned secondary swing arm (9) rotates around it and master pendulum arm (3) rotate around it is coaxial, secondary swing arm (9) is elongated, secondary swing arm is divided into two parts that are uneven in length or equate by back shaft, above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the permanent magnet (4) on the close master pendulum arm of secondary swing arm, two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), the other end of secondary swing arm is equipped with and makes secondary swing arm realize dynamic balancing or statically balanced counterweight (10), moving contact (6A) and secondary swing arm (9) and back shaft (16) electric connection, the acting body that secondary swing arm is connected is a spring mechanism, this spring mechanism has stage clip (18A) and dials frame (17A), dial frame (17A) and be fixed in the position of its permanent magnet madial wall on the master pendulum arm, stage clip (18A) is located at and is dialled between frame (17A) and the secondary swing arm (9), the one end is spacing by the spring base of dialling on the frame (17A), and its other end is spacing by the spring base on the end of the permanent magnet on the close master pendulum arm of secondary swing arm.

5, according to claim 2 near switch, it is characterized in that the back shaft (16) that axis body that above-mentioned secondary swing arm (9) rotates around it and master pendulum arm (3) rotate around it is coaxial, secondary swing arm (9) is positioned at a side of the permanent magnet on the close master pendulum arm of back shaft, secondary swing arm (9) is herringbone, its lambdoid two footmuffs are loaded on the back shaft (16), above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm, two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), moving contact (6A) and secondary swing arm (9) and back shaft (16) electric connection, the acting body that secondary swing arm (9) is connected is a spring mechanism, this spring mechanism has the frame (17B) and the stage clip (18B) between its lambdoid two pin of secondary swing arm of dialling, dial frame (17B) and be fixed in the position of its counterweight madial wall on the master pendulum arm, stage clip (18B) is located at and is dialled between frame (17B) and the secondary swing arm (9), the one end is spacing by the spring base of dialling on the frame (17B), and its other end is spacing by the spring base of its lambdoid two pin junctions of secondary swing arm (9).

6, according to claim 2 near switch, it is characterized in that the back shaft (16) that axis body that above-mentioned secondary swing arm (9) rotates around it and master pendulum arm (3) rotate around it is coaxial, secondary swing arm is positioned at a side of the permanent magnet on the close master pendulum arm of back shaft, secondary swing arm (9) is herringbone, its lambdoid two footmuffs are loaded on the back shaft (16), above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm (9), two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), moving contact (6A) and secondary swing arm (9) and back shaft (16) electric connection, the acting body that secondary swing arm (9) is connected is an extension spring (19), the position of these extension spring (19) one end hooks its counterweight madial wall on master pendulum arm, its other end is hooked in its lambdoid two pin junctions of secondary swing arm, and back shaft (16) disconnects through the place in extension spring (19).

7, according to claim 2 near switch, it is characterized in that the axis body that above-mentioned secondary swing arm (9) rotates around it is the supporter (21A) of the band V-shaped groove on the insulating support (2), the acting body that secondary swing arm (9) is connected is a stage clip (20), above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, secondary swing arm (9) is cross, its criss-cross two trailing arms have the blade that cooperates with it in the V-shaped groove on the insertion supporter (21A) and constitute the pivot point of secondary swing arm, end near the counterweight on the master pendulum arm in its criss-cross two transverse arms is equipped with above-mentioned moving contact (6A), end near the permanent magnet on the master pendulum arm in its criss-cross two transverse arms is equipped with spring base, one end of above-mentioned stage clip (20) is spacing by this spring base, the other end of stage clip (20) is spacing by the spring base of its permanent magnet madial wall position on the master pendulum arm, with corresponding two the fixed contact (5A of moving contact (6A), 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2) moving contact (6A) and secondary swing arm (9) and supporter (21A) electric connection.

8, according to claim 2 near switch, it is characterized in that the axis body that above-mentioned secondary swing arm (9) rotates around it is the supporter (21B) of the band V-shaped groove on the insulating support (2), secondary swing arm (9) is herringbone, its lambdoid two pin have the blade that cooperates with it in the V-shaped groove on the insertion supporter (21B) and constitute the pivot point of secondary swing arm, above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the counterweight on the close master pendulum arm of secondary swing arm (9), two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), moving contact (6A) and secondary swing arm (9) and supporter (21B) electric connection, the acting body that secondary swing arm (9) is connected is an extension spring (22), the position of these extension spring (22) one end hooks its permanent magnet madial wall on master pendulum arm, its other end are hooked in its lambdoid two pin junctions of secondary swing arm (9).

9, according to claim 2 near switch, it is characterized in that the axis body that above-mentioned secondary swing arm (9) rotates around it is the supporter (21C) of the band V-shaped groove on the insulating support (2), the acting body that secondary swing arm (9) is connected i.e. secondary swing arm (9) itself for being made by elastic metallic material, above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the counterweight on the close master pendulum arm of secondary swing arm (9), two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), moving contact (6A) and secondary swing arm (9) and supporter (21C) electric connection, secondary swing arm (9) has pulling-on piece (9C) and is positioned at the resilient legs (9A of two embowments of pulling-on piece side, 9B), these two resilient legs have the blade that cooperates with it in the V-shaped groove on the insertion supporter (21C) and constitute the pivot point of secondary swing arm, and pulling-on piece (9C) is connected with the position of its permanent magnet madial wall of master pendulum arm (3).

10, according to claim 2 near switch, it is characterized in that the axis body that above-mentioned secondary swing arm (9) rotates around it is the supporter (21D) of the band V-shaped groove on the insulating support (2), the acting body that secondary swing arm (9) is connected i.e. secondary swing arm (9) itself for being made by elastic metallic material, above-mentioned switch pair is by two fixed contact (5A, 5B) and the moving contact (6A) between two fixed contacts constitute, moving contact (6A) is installed on an end of the permanent magnet on the close master pendulum arm of secondary swing arm (9), two the fixed contact (5As corresponding with it, 5B) by fixed contact frame (5C, 5D) be installed on the insulating support (2), moving contact (6A) and secondary swing arm (9), supporter (21D), the master pendulum arm (3) and back shaft (16) electric connection of conduction, secondary swing arm (9) has pulling-on piece (9F) and is positioned at the resilient legs (9D of two embowments of pulling-on piece side, 9E), these two resilient legs have the blade that cooperates with it in the V-shaped groove on the insertion supporter (21D) and constitute the pivot point of secondary swing arm, and pulling-on piece (9F) is connected with the position of its counterweight madial wall of master pendulum arm.

11, according to claim 1 near switch, it is characterized in that above-mentioned insulating support (2) is hollow structure, its fixed cover is loaded in the shell (1), back shaft (16) passes its two ends of insulating support and is fixed on the inwall of insulating support, master pendulum arm (3) is the frame-shaped structure of hollow, master pendulum arm is horizontally set in insulating support, the long axis of master pendulum arm is vertical with back shaft (16), master pendulum arm (3) is divided into two parts that are uneven in length or equate by this back shaft, the above-mentioned quantity that is installed on the permanent magnet (4) on the master pendulum arm (3) is one, it is embedded in the end near piece of being positioned at of master pendulum arm, its N, S utmost point line direction is consistent with the long axis direction of master pendulum arm, the other end of master pendulum arm (3) is equipped with and makes master pendulum arm realize dynamic balancing or statically balanced counterweight (15), above-mentioned switch pair is by two fixed contact (5A, 5B) and two the moving contact (6As corresponding with it, 6B) constitute, two moving contact (6A, 6B) directly be installed on to come back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm (3) of the conduction of electric cut-in pressure, be on the master pendulum arm position of lower wall on its permanent magnet, two the fixed contact (5As corresponding with it, 5B) be installed on the inwall of insulating support (2) by the fixed contact frame, come the master pendulum arm (3) of an angle of back rotation respectively by two fixed contact (5A around back shaft (16), 5B) upper limit and lower limit, two moving contact (6A, 6B) with master pendulum arm (3) and back shaft (16) electric connection.

12, according to claim 11 near switch, it is characterized in that above-mentioned work package is an elastic mechanism, this elastic mechanism is positioned at the cavity of the hollow of master pendulum arm (3), it has retractable stem stem (25) and is set in stage clip (24) on the stem stem, and blade that stretches out on the insulating support (2) and master pendulum arm (3) are gone up and cooperated with it in the V-shaped groove that the blade that stretches out its permanent magnet madial wall position enters the stem stem two ends respectively and stem stem and stage clip is spacing.

13, according to claim 11 near switch, it is characterized in that above-mentioned work package is permanent magnet (27), this permanent magnet (27) by insulating support (2) support fixation and with master pendulum arm on permanent magnet (4) configuration that repels each other.

14, according to claim 11 near switch, it is characterized in that above-mentioned work package is two fixed contacts (5A, 5B) itself with conduction and magnetic conduction dual-use function; Perhaps be two attraction pieces (28A, 28B) being made by permeability magnetic material, these two attraction pieces are located at insulating support (2) respectively and are gone up and the corresponding position of above-mentioned two fixed contacts (5A, 5B).

15, according to claim 1 near switch, its that it is characterized in that above-mentioned insulating support (2) comprises two sections insulators of the inwall both sides of being fixed in shell (1) and be fixed in shell is away near the interlude insulator on the inwall of an end of piece, above-mentioned master pendulum arm (3) is a frame-shaped structure, master pendulum arm is vertical setting in the enclosure, the long axis of master pendulum arm (3) is vertical with back shaft (16), the quantity that is installed on the permanent magnet (4) on the master pendulum arm (3) is one, it is embedded in the side of master pendulum arm, its N, S utmost point line direction becomes 90 ° with the long axis of master pendulum arm, its two ends of endoporus that back shaft (16) passes this permanent magnet (4) are fixed on two sections insulators of insulating support, above-mentioned switch pair is by two fixed contact (5A, 5B) and two the moving contact (6As corresponding with it, 6B) constitute, two moving contact (6A, 6B) directly be installed on to come back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm (3) of the conduction of electric cut-in pressure, be in the position of its permanent magnet madial wall on the master pendulum arm, two the fixed contact (5As corresponding with it, 5B) be located on the madial wall of interlude insulator of insulating support (2), come the master pendulum arm (3) of back rotation respectively by two fixed contact (5A around back shaft (16), 5B) spacing, two moving contact (6A, 6B) with master pendulum arm (3) and back shaft (16) electric connection, above-mentioned work package is not only conducted electricity but also above-mentioned two fixed contacts that the material of magnetic conduction or the method that adopts electric conducting material and permeability magnetic material to combine are made for adopting.

16, according to claim 1 near switch, its that it is characterized in that above-mentioned insulating support (2) comprises two sections insulators of the inwall both sides of being fixed in shell (1) and be fixed in shell is away near the interlude insulator on the inwall of an end of piece, above-mentioned master pendulum arm (3) is a frame-shaped structure, master pendulum arm is vertical setting in the enclosure, the long axis of master pendulum arm (3) is vertical with back shaft (16), the quantity that is installed on the permanent magnet (4) on the master pendulum arm (3) is two, they are embedded in the side of master pendulum arm (3), its N, S pole field direction same polarity or heteropolarity configuration, their N, S utmost point line direction becomes 90 ° with the long axis of master pendulum arm, back shaft (16) passes between these two blocks of permanent magnets its two ends and is fixed on two sections insulators of insulating support, above-mentioned switch pair is by two fixed contact (5A, 5B) and two the moving contact (6As corresponding with it, 6B) constitute, two moving contact (6A, 6B) directly be installed on to come back rotation to realize that moving contact and fixed contact connect or disconnect by work package with it to keep on the master pendulum arm (3) of the conduction of electric cut-in pressure, be in the position of its permanent magnet madial wall on the master pendulum arm, two the fixed contact (5As corresponding with it, 5B) be located on the madial wall of interlude insulator of insulating support (2), come the master pendulum arm (3) of back rotation respectively by two fixed contact (5A around back shaft (16), 5B) spacing, two moving contact (6A, 6B) with master pendulum arm (3) and back shaft (16) electric connection, above-mentioned work package is not only conducted electricity but also at least one above-mentioned fixed contact that the material of magnetic conduction or the method that adopts electric conducting material and permeability magnetic material to combine are made for adopting.

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