CN103700545A - Electromagnetic switch with self-adaptive contact - Google Patents
Electromagnetic switch with self-adaptive contact Download PDFInfo
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- CN103700545A CN103700545A CN201310657925.9A CN201310657925A CN103700545A CN 103700545 A CN103700545 A CN 103700545A CN 201310657925 A CN201310657925 A CN 201310657925A CN 103700545 A CN103700545 A CN 103700545A
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Abstract
The invention relates to an electromagnetic switch with a self-adaptive contact. The electromagnetic switch comprises a coil assembly, a rubber pad, a locating ring, a return spring A and a contact disk assembly, wherein the coil assembly comprises a coil former, a static iron core A and a static iron core B; a sinking stand for installing the static iron core B is arranged on the coil former; the static iron core B is attached to the sinking stand of the coil former via the return spring A; the static iron core A is mounted in the coil former; the contact disk assembly comprises a movable contact disk assembly and two static contact disk assemblies; the movable contact disk assembly is mounted between the two static contact disk assemblies, positioned and fixed to the coil assembly via the locating ring, and comprises a movable iron core; the cavity of the static iron core B is respectively in clearance fit with the peripheries of the static iron core A and the movable iron core; the rubber pad is positioned between the movable iron core and the inner end surface of the static iron core A. The electromagnetic switch can automatically realize the reliable contact with the largest area of the contact, and is low in the working energy consumption because of the perfect design of the magnetic circuit.
Description
Technical field
The present invention relates to a kind of power on/off of take solenoid is the basic power transmitting device of action, particularly relates to a kind of adaptive electromagnetic switch of contact of hypomegetic conversion motor winding connecting mode.
Background technology
Traditional electromagnetic switch, due to the impact of various factors, makes contact can not realize to greatest extent effectively contact, thereby when transmission current, causes that caloric value is large; When contact is thrown off, also very easily produce electric arc and ablation, adhesion, seriously shortened the life-span of electromagnetic switch.When especially contact is more, more easily cause problems.The general practice is to improve material thermal endurance class and the flow conductivity thereof of contact, does not therefore stint and adopts rare precious metals as platinum, gold, silver etc.; Or as 20 amperes of above electromagnetic switch are added with arc-extinguish chamber, the electromagnetic force producing while utilizing circuit to disconnect, breaks electric arc fast, protection contact.So the electromagnetic switch price of high reliability is always high.
The Chinese invention patent that for example application number is CN98227257.X " the complementary electromagnetic switch of adaptive high frequency converter type mixed type ", the complementary electromagnetic switch of a kind of adaptation high-frequency converter formula mixed type is disclosed, it is characterized in that: (1) this technology is by the sampling to control signal and contacts status, adaptive control and method and high-frequency pulse string converter form, resistance R 1, diode D2, capacitor C2 forms the sample circuit to external control signal vc, and by contact JD1, external control signal Vc is sampled, adopt high-frequency pulse string converter circuit as the source driving signal of electronic power switch device, external control signal is Vc2, vc1, electromagnetic switch control coil DKKX requires consistent with control signal Vc, its two ends 2, 1 receives respectively vc2, on Vc1 two ends, to control signal, it is alternating voltage, use terminal ac2, ac1, now the ac terminal of bridge rectifier zL1 is exactly ac2, ac1, the direct current plus end of bridge rectifier ZL1 meets capacitor c1, resistance R 1, the positive pole of diode D1, the negative pole of diode D2 (contact dc2), the direct current negative terminal of bridge rectifier ZL1 meets capacitor C1, capacitor C2, capacitor c4, the non-dotted end (non-same polarity) of the Nf winding of the emitter of triode Q2 and high frequency transformer T1, the dotted end of Ns2 winding (contact dc1), to control signal, it is direct voltage, with terminal dc2 (corresponding to direct current high level), dc1 (corresponding to direct current low level), now without bridge rectifier zL1 and capacitor C1, the other end of resistance R 1 be connected with the other end of capacitor C2 (contact JD1), contact JD1 also with the positive pole of diode D2, the negative pole of voltage stabilizing didoe D5 is connected, the positive pole of voltage stabilizing didoe D5 is connected (contact JD3) with the base stage of triode Q2, the collector electrode of triode Q2 with resistance R 4, R3, the base stage of triode Q1 connects, the other end of resistance R 4 is connected with capacitor c5, the other end of capacitor C5 is connected with the dotted end of the Nf winding of high frequency transformer T1, the other end of resistance R 3 is connected with the negative pole of diode D1, be connected on the resistance R 2 in addition of this contact, the negative pole of diode D3, the dotted end of the Np winding of high frequency transformer Tl, the non-dotted end (non-same polarity) of Np winding is connected (contact JD4) with the collector electrode of triode Q1, the positive pole of the other end of resistance R 2 and diode D3, the positive pole of capacitor C4 connects (contact JD2), the non-dotted end (non-same polarity) of the Ns1 winding of high frequency transformer T1 is connected with the positive pole of diode D4, the dotted end of Ns1 winding (Same Name of Ends) is connected with capacitor C6, contact (Vg2) is received 3 ends of electronic power switch device DLDZ, the negative pole of diode D4 is connected with the other end of C6, contact (vg1) is received 2 ends of electronic power switch device DLDZ, 2 of electronic power switch device DLDZ, 3 ends are that the input control of electronic power switch device DLDZ drives signal end, Vg2 and Vg1 are exactly the source driving signal of converter, high frequency transformer can be guaranteed control circuit and electric main circuit electrical isolation, to meet safety requirements, simultaneously, as long as change NP umber of turn, just can adapt to different external control signal magnitudes of voltage, and change Nsl umber of turn, also just changed drive signal amplitude, so external strong adaptability, adaptive control and method are except making the complete compatibility of this circuit and electromagnetic switch circuit and service condition, the more important thing is and make electronic power switch only to control signal, dynamically have a response, out of service in off state between most of steady state period, this has not only guaranteed the reliability of circuit, and reduced the requirement to the current capacity of electronic power switch device and power capacity, the two requires all to need only with the pulse capacity of device to select electronic power switch device, compared with conventional method, with mean value capacity or effective value capacity, to easily also reduce cost, because pulse capacity is the several times of average size or effective value capacity, therefore same device can be used compared with low capacity level, and can make full use of the antisurge capacity of electronic power switch device, to overcome the surge impact of conducting momentary load to switch, guaranteed reliability of operation, (2) adopt coupling inductor to connect or the separated detection sampling that disconnects two states as electromagnetic switch contact (head) is closed, 1 end (main electrode) of one end of the Nc winding of high frequency transformer T1 and electronic power switch device DLDz, a contact (head) Vj2 of the other end of the Nc winding of high frequency transformer T1 and electromagnetic switch DK is connected in parallel, another contact (head) Vj1 of electromagnetic switch DK is connected in parallel with 2 ends (another main electrode) of electronic power switch device DLDZ, no matter the contact (head) of electromagnetic switch DK is normally opened contact NO or normally-closed contact NC, all that electronic power switch device DLDZ two main electrodes (in conjunction with Nc winding in T1) are directly in parallel with electromagnetic switch DK two contacts (head), (as the D.C. contactor) that is direct current to electromagnetic switch DK contact load circuit, with power fet MOSFET, or insulated gate triode TGBT, or Darlington triode GTR, now require Vj2 to connect direct current high level, vj1 connects direct current low level.(as A.C. contactor) to electromagnetic switch DK contact load circuit for exchanging, with two inverse parallels of unidirectional thyristor SCR, or bidirectional thyristor TRIAC, the Ns1 winding of high frequency transformer T1 and diode D4, capacitor C6 forms the driving signal end (Vg2 of DLDz, Vg1), to thyristor device burst signal, C6 gets very little value, to non-thyristor device level signal, C6 gets very large value, making signal is the pulse of certain amplitude, the size of pulse amplitude is required to determine by electronic power switch device DLDz optimal drive, in addition, to unidirectional thyristor SCR, be used in alternating current circuit, use two SCR inverse parallels to be connected together, now high frequency transformer T1 also will have another winding Nsl and another diode D4, another capacitor C6 forms and Vg2, Vg1 is another source driving signal of electricity isolation completely, vg2, vg1 meets the trigger electrode G of a SCR, negative electrode C, trigger electrode connects high voltage, Vg2, Vgl meets the trigger electrode G of another scR, negative electrode C, trigger electrode connects high voltage.To bidirectional thyristor TRIAC, with vg1, Vg2, meet trigger electrode G, the main pole M1 of TRIAC, trigger electrode is by low voltage, and the non-dotted end of the Ns2 winding of T1, the collector electrode JD4 of triode Q1 form the sample circuit to T1, and sampled signal is delivered in signal processing control circuit XCKD and gone.
Obviously, above-mentioned patent lays particular emphasis on the field of power electronics, and the present invention is applicable to the plate of electric machinery.
Summary of the invention
The object of the invention is to overcome the problems referred to above that prior art exists, propose the adaptive electromagnetic switch of a kind of contact.Electromagnetic switch of the present invention can realize the reliable contact of contact maximum area automatically; Perfect magnetic Circuit Design, makes the work energy consumption of this electromagnetic switch very little; Exquisite component structural, has significantly weakened the operation noise of this electromagnetic switch.
The present invention realizes by the following technical solutions:
The adaptive electromagnetic switch of a kind of contact, comprise line bag assembly, rubber blanket, centring ring, return spring A and tactile disk assembly, it is characterized in that: described line bag assembly comprises bobbin, static iron core A and static iron core B, bobbin is provided with the heavy stand that static iron core B is installed, static iron core B is fitted in by return spring A on the heavy stand of bobbin, and static iron core A is inlaid in bobbin; Described tactile disk assembly comprises that movable contact disc assembly and two stationary contact dishes form, and movable contact disc assembly is arranged between two stationary contact dishes compositions, and described tactile disk assembly is fixing by centring ring and line bag assembly location; Described movable contact disc assembly has comprised moving iron core, and the inner chamber of described static iron core B coordinates with the periphery of static iron core A and the peripheral clearance of moving iron core respectively; Described rubber blanket is between moving iron core and the inner face of static iron core A.
Described static iron core A comprises two binding strap B, the A punching of multi-disc static iron core and two static iron core A partitions, described multi-disc static iron core A punching is fixed between two static iron core A partitions, and described multi-disc static iron core A punching and two static iron core A partitions form static iron core A by two binding strap B colligations; The orientation free silicon steel plate that static iron core A punching is thick 0.35mm is washed into, and the epoxy phenolic laminated glass fabric plate that static iron core A partition is thick 0.5mm is washed into, the noise level when binding strap B being closely wound around can reduce electromagnetic switch operation greatly.
The dual-side of the pair of parallel of described static iron core A punching is provided with four symmetrical bandage grooves, the dual-side of another pair of parallel is provided with two symmetrical grooves, distance between groove floor and static iron core A punching bottom is 1.5mm, groove floor is protruded the thrust end of the 1mm that has an appointment, can unhinderedly fit to the end face of static iron core B with the time static iron core A that guarantees that the present invention moves.
The orientation free silicon steel plate that described static iron core B is thick 0.35mm is through being washed at a high speed.The middle part of described static iron core B is provided with the rectangle mold cavity that holds static iron core A, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding the rectangular indentation of the binding strap B of static iron core A, and described static iron core B is by rectangle mold cavity and rectangular indentation and static iron core A implementation matched in clearance.Not only significantly reduced thus the additional air gap of magnetic circuit, eddy current and noise that also the interior alternating current of weakened line bag causes to greatest extent.
Described line bag assembly also comprises line bag and foundation ring, and line jacket is contained on bobbin, is provided with the labyrinth passage of twice symmetry in the end face of this side of installation end of bobbin, and described foundation ring is arranged in labyrinth passage by the lug on foundation ring; In described bobbin, be provided with the rectangle mold cavity that holds static iron core A, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding the rectangular channel of the binding strap B of static iron core A.
Described line bag is that electromagnetic wire is close around forming, and leading-out terminal is through the fairlead of offering on bobbin.
Described foundation ring is that the epoxy phenolic laminated glass fabric plate of thick about 1mm is washed into.Lug on foundation ring embeds after the labyrinth passage of bobbin, rotates to an angle and completes installation; And can make hot melt deformation process by the bobbin labyrinth passage mouth that enhancing nylon is made, prevent that foundation ring from coming off.
Described rubber blanket is that the General Purpose Rubber plate of thick 0.5mm is washed into.Have soft and elastomeric advantage, the direct contact while moving iron core with static iron core A adhesive for isolating, eliminates the machinery noise therefore causing.
Described return spring A is taper stage clip.For maintaining static iron core B, can be fitted in reliably in the heavy stand of bobbin, avoid occurring possible air gap fluctuation, the conical design of its large small end, also can avoid interfering with other parts, moreover can be with the better compression stroke adapting to less than 6mm of enough spring forces.
Described centring ring forms for strengthening nylon injection-molding.Centring ring is provided with inner stopper and male half coupling.Centring ring can be used for accurately tactile disk assembly location being wrapped to the correspondence position of assembly online, and inner stopper and male half coupling can be installed stationary contact dish endoporus in distolateral cylindrical and tactile disk assembly with bobbin respectively and coordinate.
Described stationary contact dish forms and comprises contact, flexible member and the split pin on stationary contact dish of stationary contact dish and circumference uniform distribution.Described stationary contact dish is provided with contact installing hole, and described flexible member is sleeved on contact, and contact is positioned on stationary contact dish by split pin through contact installing hole.
The center of described contact has for locking, press or the through hole of weld load lead-out wire, and described contact is copper plate, and the surface of contact is silver-plated processing.
Described contact is comprised of shoulder and axial region, has the radially groove centered by through hole on described shoulder, the positioning end that radially a side of groove is split pin, arc chute when radially the opposite side of groove is contact and movable contact spring disengaging; Described flexible member is sleeved on axial region, and axial region is arranged on stationary contact dish by split pin through in contact installing hole, leaves the gap of 0.2～0.3mm between described axial region and contact installing hole.
Described stationary contact dish is stamped to form by epoxy phenolic laminated glass fabric plate, or injection molded by thermosetting engineering plastics.
Described flexible member is rubber parts or spring.While adopting spring, generally also comprise the thin packing ring shielding, avoided stationary contact dish or other parts to cause damage.
Described movable contact disc assembly comprises movable contact dish composition and moves iron core, described movable contact dish forms and comprises movable contact dish, pad, spring pad A and multi-disc movable contact spring, the middle part of described movable contact dish is provided with moving iron core installation cavity, described moving iron core is successively through being fixed on movable contact dish after pad, moving iron core installation cavity and spring pad A, described multi-disc movable contact spring be take and moved iron core and as the center of circle, by tangential direction, be distributed on the both sides of movable contact dish, and the through hole riveted joint that the movable contact spring of both sides arranges by inner side is an electric and mechanical integral body.
Described moving iron core comprises two binding strap A, the moving lamination of multi-disc and two moving iron core partitions, the moving lamination of described multi-disc is fixed between two moving iron core partitions, the moving lamination of described multi-disc and two moving iron core partitions form moving iron core by two binding strap A colligation, the epoxy phenolic laminated glass fabric plate that moving iron core partition is thick 0.5mm is washed into, the noise level when binding strap A being closely wound around can reduce electromagnetic switch operation greatly.
The dual-side of the pair of parallel of described moving lamination is provided with four symmetrical bandage grooves, and a wherein side of dual-side is provided with back stop slot, between two bandage grooves of described back stop slot on same side; The dual-side of another pair of parallel is provided with two symmetrical grooves, distance between groove floor and moving lamination bottom is 1.5mm, groove floor is protruded the thrust end of the 1mm that has an appointment, and moving iron core can smoothly fit to the end face of static iron core B when guaranteeing that the present invention moves.
The middle part of described spring pad A is provided with bent tongue piece.
Described tactile disk assembly also comprises spring pad, packing ring, plain washer, return spring B, stay pipe and pipe type rivet, and described movable contact disc assembly is arranged between two stationary contact dishes compositions by spring pad, packing ring, plain washer, return spring B, stay pipe and pipe type rivet.Packing ring, spring pad and return spring B, be used under the prerequisite of not damaging stationary contact dish and movable contact dish, guarantees that the movable contact spring of movable contact disc assembly and the contact of one group of stationary contact dish composition have contact enough under normally off, to realize good electric connection.Stay pipe, packing ring, plain washer and pipe type rivet are for being accurately combined into global facility by each component parts of tactile disk assembly, wherein plain washer is the damage of pipe type rivet to stationary contact dish when preventing from riveting, and the endoporus of pipe type rivet is the installing hole of the adaptive electromagnetic switch of contact simultaneously.
operation principle:
The lead-out wire of load two states accesses respectively the contact of corresponding one group of stationary contact dish composition of this alternating electromagnetic switch.Generally, effect because of return spring A and return spring B, flexible member on the contact being acted on produces certain metamorphosis, servo-actuated contact can produce certain inclination angle in the scope in its installing hole gap, the movable contact spring that coordinates that movable contact dish forms is realized good reliably closing with the contact that wherein one group of stationary contact dish forms, form normally off, access this group stationary contact dish and form the load lead-out wire of contact separately, become the default conditions of load lead-out wire.When needs load lead-out wire state changes, line bag conduction (alternating current, direct current all can), produce (alternation or constant) magnetic field, along line bag,------------------------static iron core B---additional air gap---line bag forms complete magnetic linkage to additional air gap to static iron core A to main air gap to moving iron core to additional air gap to static iron core B to additional air gap, according to magnetic pole two like magnetic poles repel each other, the characteristic that there is a natural attraction between the sexes, moving iron core and static iron core A moment are compressed main gas length to minimum value, force the flexible member on other one group of contact to produce certain metamorphosis, servo-actuated contact can produce certain inclination angle equally in the scope in its installing hole gap, the other movable contact spring and this group contact that coordinate movable contact dish to form are realized good reliably closing again, complete the change of load lead-out wire state.
Compared with prior art, its advantage is in the present invention:
1, in the present invention, electromagnetic switch can realize the reliable contact of contact maximum area automatically; Perfect magnetic Circuit Design, makes the work energy consumption of this electromagnetic switch very little; Exquisite component structural, has significantly weakened the operation noise of this electromagnetic switch.
2, the present invention adopts described static iron core A to comprise two binding strap B, the A punching of multi-disc static iron core and two static iron core A partitions, described multi-disc static iron core A punching is fixed between two static iron core A partitions, and described multi-disc static iron core A punching and two static iron core A partitions form static iron core A by two binding strap B colligations; The orientation free silicon steel plate that static iron core A punching is thick 0.35mm is washed into, static iron core A partition is that thick 0.5mm, all the other sizes are washed into the epoxy phenolic laminated glass fabric plate of static iron core A punching, the noise level when binding strap B being closely wound around can reduce electromagnetic switch operation greatly.
3, the present invention adopts the orientation free silicon steel plate that described static iron core B is thick 0.35mm to be washed into through high speed, the middle part of described static iron core B is provided with the rectangle mold cavity that holds static iron core A, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding the rectangular indentation of the binding strap B of static iron core A, and described static iron core B is matched in clearance by rectangle mold cavity and rectangular indentation and static iron core A; Not only significantly reduced thus the additional air gap of magnetic circuit, eddy current and noise that also the interior alternating current of weakened line bag causes to greatest extent.
4, to adopt described foundation ring be that the epoxy phenolic laminated glass fabric plate of thick about 1mm is washed in the present invention.Lug on foundation ring embeds after the labyrinth passage of bobbin, rotates to an angle and completes installation; And can make hot melt deformation process by the bobbin labyrinth passage mouth that enhancing nylon is made, prevent that foundation ring from coming off.
5, to adopt described rubber blanket be that the General Purpose Rubber plate of thick about 0.5mm is washed in the present invention.Have soft and elastomeric advantage, the direct contact while can be used for isolating moving iron core with static iron core A adhesive, eliminates the machinery noise therefore causing.
6, to adopt described return spring A be taper stage clip in the present invention.Can be used for keeping static iron core B can be fitted in reliably in the heavy stand of bobbin, avoid occurring possible air gap fluctuation, the conical design that has large small end, also can avoid interfering with other parts, moreover can be with the better compression stroke adapting to less than 6mm of enough spring forces.
7, the present invention adopts described centring ring to form for strengthening nylon injection-molding.Centring ring is provided with inner stopper and male half coupling.Centring ring can be used for accurately tactile disk assembly location being wrapped to the correspondence position of assembly online, and inner stopper and male half coupling can be installed stationary contact dish endoporus in distolateral cylindrical and tactile disk assembly with bobbin respectively and coordinate.
8, the present invention adopts described stationary contact dish composition to comprise contact, flexible member and the split pin on stationary contact dish of stationary contact dish and circumference uniform distribution, described stationary contact dish is provided with contact installing hole, described flexible member is sleeved on contact, and contact inserts in contact installing hole and is arranged on stationary contact dish by split pin; Described stationary contact dish is stamped to form by epoxy phenolic laminated glass fabric plate or is injection molded by thermosetting engineering plastics; Even and if end face also can meet instructions for use with respect to the perpendicularity of installing hole completely 0.3, generally other electromagnetic switch must < 0.1.
9, the present invention adopts the center of described contact to have for locking, press or the through hole of weld load lead-out wire, and described contact is copper plate, and the surface of contact needs silver-plated; Described contact is comprised of shoulder and axial region, has the radially groove centered by through hole on described shoulder, the positioning end that radially a side of groove is split pin, arc chute when radially the opposite side of groove is contact and movable contact spring disengaging; Described flexible member is sleeved on axial region, leaves the gap of 0.2～0.3mm between described axial region and contact installing hole; In the time of adapting to well the contact of contact, movable contact spring in appropriate scope of activities with respect to the perpendicularity of installing hole and the technological fluctuation of position degree.The through hole of contact inside, can, for general unthreaded hole, as pressing or weld load lead-out wire, also can be screwed hole, be used as the lug plate endoporus of locking load lead-out wire.
10, to adopt described flexible member be rubber parts or spring in the present invention; To the requirement of flexible member, be that elasticity is high, good reliability, when adopting rubber parts, there is elastic damping large, can avoid the mechanical shock of Contact completely, as ethylene propylene diene rubber, because of gel content high, elasticity is fine, the 5-8 consistency of can being exposed to the sun, high-low temperature resistant; When adopting spring, have that impulse stroke is large, temperature affects little feature.During practical application, can choose flexibly as required, both guarantee well to contact reliably between contact and movable contact spring, guarantee again to manufacture upper good manufacturability.
11, the present invention adopts described tactile disk assembly also to comprise spring pad, packing ring, plain washer, return spring B, stay pipe and pipe type rivet, and described movable contact disc assembly is arranged between two stationary contact dishes compositions by spring pad, packing ring, plain washer, return spring B, stay pipe and pipe type rivet.Packing ring, spring pad and return spring B, for stationary contact dish and movable contact dish not being caused under the prerequisite of damage, guarantee that the movable contact spring of movable contact disc assembly and the contact of one group of stationary contact dish composition have contact enough under normally off, to realize good electric connection.Stay pipe, packing ring, plain washer and pipe type rivet are for being accurately combined into global facility by each component parts of tactile disk assembly, wherein plain washer is the damage of pipe type rivet to stationary contact dish when preventing from riveting, and the endoporus of pipe type rivet is the installing hole of the adaptive electromagnetic switch of contact simultaneously.
12, the present invention adopts the material of movable contact dish identical with stationary contact dish, the tangential uniform movable contact spring in both sides is fixed on movable contact dish by rivet, the identical movable contact spring of installing hole is without insulation, the movable contact spring of adjacent position should keep the gap of > 0.5mm, when avoiding movable contact spring to depart from contact between three-phase arcing may.Movable contact spring is that copper coin is washed into, and as required, also can carve the arc chute that quantity does not wait.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is line bag assembly structure schematic diagram of the present invention
Fig. 3 is line bag assembly explosive view of the present invention
Fig. 4 is tactile disk assembly structure schematic diagram of the present invention
Fig. 5 is tactile disk assembly explosive view of the present invention
Fig. 6 is movable contact disc assembly explosive view of the present invention
Fig. 7 is that stationary contact dish of the present invention forms structural representation
Fig. 8 is that stationary contact dish of the present invention forms stereogram
Fig. 9 is that stationary contact dish of the present invention forms upward view
Figure 10 is structure of contact terminal schematic diagram of the present invention
Figure 11 is the moving core structure schematic diagram of the present invention
Figure 12 is the moving lamination structural representation of the present invention
Mark in figure: 1, line bag assembly, 2, rubber blanket, 3, centring ring, 4, return spring A, 5, tactile disk assembly, 51, movable contact disc assembly, 52, stationary contact dish forms, 53, spring pad, 54, packing ring, 55, plain washer, 56, return spring B, 57, stay pipe, 58, pipe type rivet, 111, bobbin, 112, static iron core A, 113, static iron core B, 114, line bag, 115, foundation ring, 116, labyrinth passage, 117, lug, 118, binding strap B, 119, rectangular channel, 120, static iron core A partition, 511, moving iron core, 512, movable contact dish, 513, pad, 514, spring pad A, 515, multi-disc movable contact spring, 521, stationary contact dish, 522, contact, 523, flexible member, 524, split pin, 5111, binding strap A, 5112, moving iron core partition, 5113, bandage groove, 5114, back stop slot, 5221, shoulder, 5222, axial region.
Embodiment
Below in conjunction with Figure of description, the present invention is further detailed:
Embodiment 1:
The adaptive electromagnetic switch of a kind of contact, comprise line bag assembly 1, rubber blanket 2, centring ring 3, return spring A4 and tactile disk assembly 5, described line bag assembly 1 comprises bobbin 111, static iron core A112 and static iron core B113, described bobbin 111 is provided with the heavy stand that static iron core B113 is installed, described static iron core B113 is fitted on the heavy stand of bobbin 111 by return spring A4, described static iron core A112 is contained in bobbin 111, described tactile disk assembly 5 comprises that movable contact disc assembly 51 and two stationary contact dishes form 52, described movable contact disc assembly 51 is arranged on two stationary contact dishes and forms between 52, described movable contact disc assembly 51 is fixing with line bag assembly 1 location by centring ring 3, described movable contact disc assembly 51 has comprised moving iron core 511, the inner chamber of described static iron core B113 coordinates with the periphery of static iron core A112 and the peripheral clearance of moving iron core 511 respectively, described rubber blanket 2 is between moving iron core 511 and the inner face of static iron core A112.
In the present invention, described static iron core A112 comprises two binding strap B118, the A punching of multi-disc static iron core and two static iron core A partitions 120, described multi-disc static iron core A punching is fixed between two static iron core A partitions 120, and described multi-disc static iron core A punching and two static iron core A partitions 120 form static iron core A by two binding strap B118 colligations; The orientation free silicon steel plate that static iron core A punching is thick 0.35mm is washed into, the thick about 0.5mm of static iron core A partition 120, the noise level when binding strap B118 being closely wound around can reduce electromagnetic switch operation greatly.
In the present invention, the dual-side of the pair of parallel of described static iron core A punching is provided with four symmetrical bandage grooves, the dual-side of another pair of parallel is provided with two symmetrical grooves, distance between groove floor and static iron core A punching bottom is 1.5mm, groove floor is protruded the thrust end of the 1mm that has an appointment, and static iron core A112 can farthest fit to the end face of static iron core B113 when guaranteeing that the present invention moves.
In the present invention, the orientation free silicon steel plate that described static iron core B113 is thick about 0.35mm is through being washed at a high speed, the middle part of described static iron core B113 is provided with the rectangle mold cavity that holds static iron core A112, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding the rectangular indentation of the binding strap B118 of static iron core A112, and described static iron core B113 is matched in clearance by rectangle mold cavity and rectangular indentation and static iron core A112.Not only significantly reduced thus the additional air gap of magnetic circuit, eddy current and noise that also the interior alternating current of weakened line bag causes to greatest extent.
In the present invention, described line bag assembly also comprises line bag 114 and foundation ring 115, described line bag 114 is sleeved on bobbin 111, the inside that bobbin 111 is positioned at installation end is provided with the labyrinth passage 116 of twice symmetry, and described foundation ring 115 is arranged in labyrinth passage 116 by the lug 117 on foundation ring 115; In described bobbin 111, be provided with the rectangle mold cavity that holds static iron core A112, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding the rectangular channel 119 of the binding strap B118 of static iron core A112.
In the present invention, described line bag 114 is close around forming for electromagnetic wire, and leading-out terminal is through the fairlead of offering on bobbin 111.
In the present invention, described foundation ring 115 forms for the epoxy phenolic laminated glass fabric plate punching of thick about 1mm.Lug 117 on foundation ring 115 embeds after the labyrinth passage 116 of bobbin 111, rotates to an angle and completes installation; And can make hot melt deformation process by the bobbin labyrinth passage mouth that enhancing nylon is made, prevent that foundation ring from coming off.
In the present invention, described rubber blanket 2 is washed into for the General Purpose Rubber plate of thick about 0.5mm.Have soft and elastomeric advantage, the direct contact while can be used for isolating moving iron core 511 with static iron core A112 adhesive, eliminates the machinery noise therefore causing.
In the present invention, described return spring A4 is taper stage clip.For keeping static iron core B113 to be fitted in reliably in the heavy stand of bobbin 111, avoid occurring possible air gap fluctuation have the conical design of large small end, can avoid interfering with other parts, more can provide at the compression stroke less than 6mm enough spring forces.
In the present invention, described centring ring 3 forms for strengthening nylon injection-molding.Centring ring 3 is provided with inner stopper and male half coupling.Centring ring 3 can be used for accurately tactile disk assembly 5 location being fixed on online bag assemblies 1, and inner stopper and male half coupling can be installed stationary contact dish endoporus in distolateral cylindrical and tactile disk assembly 5 with bobbin 111 respectively and coordinate.
In the present invention, described stationary contact dish forms 52 and comprises contact 522, flexible member 523 and the split pin 524 on stationary contact dish 521 of stationary contact dish 521 and circumference uniform distribution, described stationary contact dish 521 is provided with contact installing hole, described flexible member 523 is sleeved on contact 522, and contact 522 is arranged on stationary contact dish 521 by split pin 524 through in contact installing hole.
In the present invention, the center of described contact 522 has for locking, press or the through hole of weld load lead-out wire, and described contact 522 is copper plate, and the surface of contact 522 needs silver-plated.
In the present invention, described contact 522 is comprised of shoulder 5221 and axial region 5222, on described shoulder 5221, have the radially groove centered by through hole, radially groove is the location notch of split pin 524 first, and radially another of groove is the arc chute of contact 522 while departing from movable contact spring 515; Described flexible member 523 is sleeved on axial region 5222, and axial region 5222 is arranged on stationary contact dish 521 by split pin 524 through in contact installing hole, leaves the gap of 0.2～0.3mm between described axial region 5222 and contact installing hole.
In the present invention, described stationary contact dish 521 is stamped to form by epoxy phenolic laminated glass fabric plate or is injection molded by thermosetting engineering plastics.
In the present invention, described flexible member 523 is rubber parts.
In the present invention, described movable contact disc assembly 51 comprises movable contact dish composition and moves iron core 511, described movable contact dish forms and also comprises movable contact dish 512, pad 513, spring pad A514 and moving iron core 511, the middle part of described movable contact dish 511 is provided with moving iron core 511 installation cavitys, described moving iron core 511 is successively through pad 513, after moving iron core installation cavity and spring pad A514, be fixed on movable contact dish 512, described multi-disc movable contact spring 515 be take and moved iron core 511 and as the center of circle, by tangential direction, be distributed on the both sides of movable contact dish 512, the through hole riveted joint that the movable contact spring 515 of movable contact dish 512 both sides arranges by inner side is electric and mechanical integral body.
In the present invention, described moving iron core 511 comprises two binding strap A5111, the moving lamination of multi-disc and two moving iron core partitions 5112, the moving lamination of described multi-disc is fixed between two moving iron core partitions 5112, the moving lamination of described multi-disc and two moving iron core partitions 5112 form moving iron core by two binding strap A5111 colligation, and moving iron core partition 5112 is washed into for the epoxy phenolic laminated glass fabric plate of thick about 0.5mm.
In the present invention, the dual-side of the pair of parallel of described moving lamination is provided with four symmetrical bandage grooves 5113, and a wherein side of dual-side is provided with back stop slot 5114, between two bandage grooves 5113 of described back stop slot 5114 on same side; The dual-side of another pair of parallel is provided with two symmetrical grooves, distance between groove floor and moving lamination bottom is 1.5mm, groove floor is protruded the thrust end of the 1mm that has an appointment, and moving iron core 511 can fully fit to the end face of static iron core B113 when guaranteeing that the present invention moves.
In the present invention, the middle part of described spring pad A514 is provided with bent tongue piece 5115.
In the present invention, described tactile disk assembly 5 also comprises spring pad 53, packing ring 54, plain washer 55, return spring B56, stay pipe 57 and pipe type rivet 58, and described movable contact disc assembly 51 is arranged on two stationary contact dishes by spring pad 53, packing ring 54, plain washer 55, return spring B56, stay pipe 57 and pipe type rivet 58 and forms between 52.Packing ring 54, spring pad 53 and return spring B56, be used under the prerequisite of not damaging stationary contact dish and movable contact dish, guarantees that the movable contact spring of movable contact disc assembly and the contact of one group of stationary contact dish composition have contact enough under normally off, to realize good electric connection.Stay pipe 57, packing ring 54, plain washer 55 and pipe type rivet 58 are for being accurately combined into global facility by each component parts of tactile disk assembly, wherein plain washer is that pipe type rivet injures stationary contact dish when preventing from riveting, and the endoporus of pipe type rivet is the installing hole of the adaptive electromagnetic switch of contact simultaneously.
The present invention is when concrete use, bobbin is for strengthening nylon injection-molding part, apart from the rectangle mold cavity that holds mm * 12,19.2mm * 19.2 mm of line bag, with hold φ 29 mm * 1.4 mm static iron core B outside, in the parallel walls of the rectangular inner cavity of its 15.2 mm * 15.2 mm, also be designed with the rectangular channel of 4 symmetrical road 2.4 mm * 1.3 mm, in order to dodge and locate colligation static iron core A 2 mm * 0.9 mm without latitude glass tape, and install on the heavy stand wall of end face one side and be provided with 2 roads as the labyrinth passage of foundation ring, location lug.
Line bag is that the electromagnetic wire QZY-2/180 of 434 circle wire diameter φ 0.31 mm is close around forming, electromagnetic wire height 12 mm, and net weight 32g, leading-out terminal is through the fairlead of bobbin.
Static iron core A consists of static iron core A punching, static iron core A partition and binding strap B.Wherein the material of 40 static iron core A punching is the orientation free silicon steel plate of thick 0.35 mm, leaves the bandage groove of 2 symmetrical road 2 mm * 1 mm, with hold thick 0.9 mm without latitude glass tape (being binding strap B); Two side-thrust ends wide * height is 1 mm * 1 mm.Thick 0.5 mm of static iron core A partition, size is with static iron core A punching.
Static iron core B is that the orientation free silicon steel plate of 4 thick 0.35 mm is washed at a high speed, external diameter φ 29 mm.Also there is size the rectangle inside of 15.2 mm * 15.2 mm with 4 breach of the rectangular channel of bobbin, and leaves symmetrical argon arc weld groove, and the gap of its inner chamber and static iron core A is 0.2 mm.
Foundation ring is that the epoxy phenolic laminated glass fabric plate of thick about 1mm is washed into, and foundation ring lug is wide * and height is 4 mm * 1.5 mm, embeds after the labyrinth passage of bobbin, rotate approximately 16 ° of angles and complete installation.
Described rubber blanket is that the General Purpose Rubber plate 1615 of soft, high resiliency, thick 0.5 mm is washed into, and long * wide is 15 mm * 15 mm.
Described return spring A is taper stage clip, wire diameter φ 1 mm, small end center circle φ 23.5 mm, 45 ° of taperings, number of active coils 2, natural height 10 mm.Adapt to the compression stroke less than 6 mm completely.
Described centring ring is also to strengthen the moulding that nylon is made, the male half coupling of the inner stopper of φ 36.5 mm and φ 37 mm is installed stationary contact dish endoporus in distolateral cylindrical and tactile disk assembly with bobbin respectively and is coordinated, effective depth between seam is that 7mm. centring ring external diameter is φ 42 mm, and seam height is 3 mm.
Described tactile disk assembly comprises that 2 stationary contact dishes form, movable contact disc assembly, 6 packing rings, plain washer 6 and 3 groups of spring pads, return spring, stay pipe and pipe type rivet 6 mm * 32 mm.Packing ring is the thin steel pad of the Q235 of φ 14 mm * φ 6.3 mm * 0.5 mm; Spring pad is the thin steel pad of the Q235 of φ 14 mm * φ 9.3 mm * 0.5 mm; Return spring wire diameter φ 1.2 mm, center circle φ 11 mm, number of active coils 2, natural height 15 mm, pressure 8N when service position (height 9 mm), to the minimal-contact pressure of contact under default conditions for (contact area of single contact is 28.4mm
2) 0.07MPa.Stay pipe is the stainless steel tube of φ 9 mm * 18, mm * 1.2 mm, and two ends polish.
Stationary contact dish is comprised of stationary contact dish, and the flexible member of circumference uniform distribution (O type circle), contact and split pin 0.6 * 4 form.
Stationary contact dish is washed into by the epoxy phenolic laminated glass fabric plate of thick about 3mm, and installing hole is of a size of uniform 3 φ 6.3 mm through holes in the center circle of φ 68 mm.
Contact material is copper plate, and thick 0.05～0.07 mm of electroplate, is divided into two sections of contact shoulder and contact axial regions.Contact shoulder is the cylinder of φ 6.5 mm * 2.5 mm, wide 0.6 mm of radially groove opening, dark 7.6 mm; Contact axial region is the cylinder of φ 4 mm * 9.5 mm, and the installing hole on stationary contact dish has the gap of 0.2～0.3mm.Contact center is φ 1.5 mm through holes.Because of the yield strength >=58.8MPa of red copper, add the adaptive characteristic of upper contact head, the splendid silver coating of electric conductivity can be not destroyed, can fully guarantee tens thousand of the above life-spans of this type electromagnetic switch.
Movable contact disc assembly by movable contact dish form, pad, moving iron core and spring pad A form.Pad is that the Q235 sheet metal of thick approximately 0.5 mm is washed into, and needs the pitch-dark processing of electrophoresis, in case eddy current short circuit.Spring pad A is also formed by the punching press of Q235 sheet metal, the stretching of thick approximately 0.5 mm, convex edge internal diameter φ 36 mm, high 1.5 mm; Wide 3 mm of its tongue piece, spacing 11 mm.
Movable contact dish composition consists of movable contact dish, movable contact spring and rivet.The material of movable contact dish is identical with stationary contact dish; The tangential uniform movable contact spring in both sides is fixed on movable contact dish by 12 rivets 2.5 * 9, the gap of adjacent position movable contact spring is 0.65mm, and movable contact spring is of a size of 25 mm * 2, mm * 7 mm, two ends circular arc R3.5 mm transition, installing hole centre-to-centre spacing 20 mm, equally must electroplate 0.05～0.07 mm.
Moving iron core forms by moving lamination, moving iron core partition and binding strap A, and institutional framework is substantially with static iron core A.The material of moving lamination is with static iron core sheet, and except many, the back stop slot of wide 3.2 mm, dark 5.5 mm, its shape approximation is in static iron core A punching; The epoxy phenolic laminated glass fabric plate that moving iron core partition is thick about 0.5mm is washed into, and size is with moving lamination.With static iron core, A is the same, and moving iron core also must be with being closely wound around without latitude glass tape, the thick bandage groove depth that is approximately no more than, i.e. thick approximately 0.9 mm.
Embodiment 2:
And the difference of embodiment 1 is: the shoulder 5222 of described contact 522 and the flexible member between contact installing hole 523 are spring, and both ends of the spring is with spring pad, other parts of avoiding wearing and tearing.
Claims (10)
1. the adaptive electromagnetic switch of contact, comprise line bag assembly (1), rubber blanket (2), centring ring (3), return spring A(4) and tactile disk assembly (5), it is characterized in that: described line bag assembly (2) comprises bobbin (111), static iron core A(112) and static iron core B(113), described bobbin (111) is provided with installs static iron core B(113) heavy stand, described static iron core B(113) by return spring A(4) be fitted on the heavy stand of bobbin (111) described static iron core A(112) be arranged in bobbin (111); Described tactile disk assembly (5) comprises that movable contact disc assembly (51) and two stationary contact dishes form (52), described movable contact disc assembly (51) is arranged on two stationary contact dishes and forms between (52), and described tactile disk assembly (5) is fixing with line bag assembly (1) location by centring ring (3); Described movable contact disc assembly (51) has comprised moving iron core (511), described static iron core B(113) inner chamber respectively with static iron core A(112) periphery and the peripheral clearance of moving iron core (511) coordinate; Described rubber blanket (2) is positioned at moving iron core (511) and static iron core A(112) inner face between.
2. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described static iron core A(112) comprise two binding strap B(118), the A punching of multi-disc static iron core and two static iron core A partitions (120), described multi-disc static iron core A punching is fixed between two static iron core A partitions (120), and described multi-disc static iron core A punching and two static iron core A partitions (120) are by two binding strap B(118) colligation formation static iron core A; The orientation free silicon steel plate that static iron core A punching is thick 0.35mm is washed into, static iron core A partition (118) is washed into for the epoxy phenolic laminated glass fabric plate of thick 0.5mm, the dual-side of the pair of parallel of described static iron core A punching is provided with four symmetrical bandage grooves, the dual-side of another pair of parallel is provided with two symmetrical grooves, distance between groove floor and static iron core A punching bottom is 1.5mm, and groove floor is protruded the thrust end of the 1mm that has an appointment.
3. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described static iron core B(113) for orientation free silicon steel plate is through being washed at a high speed, described static iron core B(113) middle part is provided with and holds static iron core A(113) rectangle mold cavity, two parallel walls of described rectangular inner cavity are provided with symmetrical for guiding static iron core A(112) binding strap B(118) rectangular indentation, described static iron core B(113) by rectangle mold cavity and rectangular indentation and static iron core A(112) be matched in clearance.
4. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described line bag assembly (1) also comprises line bag (114) and foundation ring (115), described line bag (114) is sleeved on bobbin (111), the installation end one side inside of bobbin (111) is provided with the labyrinth passage of twice symmetry, and described foundation ring (115) are arranged in labyrinth passage by the lug (117) on foundation ring (115); In described bobbin (111), be provided with and hold static iron core A(112) rectangle mold cavity, two parallel walls of described rectangular inner cavity are provided with symmetrical Si road for guiding static iron core A(112) binding strap B(118) rectangular channel (119).
5. according to the adaptive electromagnetic switch of a kind of contact described in claims 4, it is characterized in that: described line bag (114) is close around forming for electromagnetic wire, and leading-out terminal is through the fairlead of offering on bobbin (111); Described foundation ring (115) is washed into for epoxy phenolic laminated glass fabric plate, described rubber blanket (2) is washed into for General Purpose Rubber plate, described return spring A(4) be taper stage clip, described centring ring (3) forms for strengthening nylon injection-molding, and centring ring (3) is provided with inner stopper and male half coupling.
6. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described stationary contact dish forms (52) and comprises stationary contact dish (521), and the contact (522) of circumference uniform distribution on stationary contact dish (521), flexible member (523) and split pin (524), described stationary contact dish (521) is provided with contact installing hole, described flexible member (523) is sleeved on contact (522), contact (522) is arranged on stationary contact dish (521) by split pin (524) through in contact installing hole, the center of described contact (522) has for locking, press or the through hole of weld load lead-out wire, described contact (522) is copper plate, the surface of contact (522) is provided with silver-plated.
7. according to the adaptive electromagnetic switch of a kind of contact described in claims 6, it is characterized in that: described contact (522) is comprised of shoulder (5221) and axial region (5222), on described shoulder (5221), have the radially groove centered by through hole, radially a side of groove is the positioning end of split pin (524), arc chute when radially the opposite side of groove is contact (522) and movable contact spring (515) disengaging; Described flexible member (523) is sleeved on axial region (5222), axial region (5222) is upper through being arranged on stationary contact dish (521) by split pin (524) in contact installing hole, leaves the gap of 0.2～0.3mm between described axial region (5222) and contact installing hole; Described flexible member (523) is rubber parts or spring.
8. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described movable contact disc assembly (51) comprises movable contact dish composition and moves iron core (511), described movable contact dish forms and comprises movable contact dish (512), pad (513), spring pad A(514) and multi-disc movable contact spring (515), the middle part of described movable contact dish (512) is provided with moving iron core installation cavity, described moving iron core (511) is successively through pad (513), moving iron core (511) installation cavity and spring pad A(514) after be fixed on movable contact dish (512), described multi-disc movable contact spring (515) be take and moved iron core (511) and as the center of circle, by tangential direction, be distributed on the both sides of movable contact dish (512).
9. according to the adaptive electromagnetic switch of a kind of contact described in claims 1 or 8, it is characterized in that: described moving iron core (511) comprises two binding strap A(5111), the moving lamination of multi-disc and two moving iron core partitions (5112), the moving lamination of described multi-disc is fixed between two moving iron core partitions (5112), the moving lamination of described multi-disc and two moving iron core partitions (5112) are by two binding strap A(5111) colligation forms moving iron core, moving iron core partition (5112) is washed into for the epoxy phenolic laminated glass fabric plate of thick 0.5mm, the dual-side of the pair of parallel of described moving lamination is provided with symmetrical four bandage grooves (5113), a wherein side of dual-side is provided with back stop slot (5114), described back stop slot (5113) is positioned between two the bandage grooves (5114) on same side, the dual-side of another pair of parallel is provided with two symmetrical grooves, and the distance between groove floor and moving lamination bottom is 1.5mm, and groove floor is protruded the thrust end of the 1mm that has an appointment.
10. according to the adaptive electromagnetic switch of a kind of contact described in claims 1, it is characterized in that: described tactile disk assembly (5) also comprises spring pad (53), packing ring (54), plain washer (55), return spring B(56), stay pipe (57) and pipe type rivet (58), described movable contact disc assembly (51) is by spring pad (53), packing ring (54), plain washer (55), return spring B(56), stay pipe (57) and pipe type rivet (58) be arranged on two stationary contact dishes and form between (52).
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| CN103700545B (en) | 2016-02-24 |
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Denomination of invention: Contact adaptive electromagnetic switch Effective date of registration: 20220110 Granted publication date: 20160224 Pledgee: Qianwei branch of Bank of China Ltd. Pledgor: LESHAN DONGFENG AUTOMOBILE ELECTRICAL APPLIANCE Co.,Ltd. Registration number: Y2022510000012 |
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