CN205159222U - Contactor - Google Patents

Abstract

The utility model provides a contactor, includes the base, sets up yoke and coil in the base, be equipped with the yoke buckle on the base bottom plate for hook the yoke of dress in the base, the both sides of yoke are being equipped with the yoke bolster with cooperation department of yoke buckle, through yoke bolster and yoke buckle joint. The utility model discloses a contactor passes through the fixed and buffer protection of the yoke that the yoke bolster cooperation in buckle and the yoke on the base realized, simple structure, assembly efficiency are high.

Description

Contactor

Technical field

The utility model belongs to Low Voltage Electrical Apparatus, is specifically related to a kind of contactor.

Background technology

Contactor rated operational current 100A and above model, because requiring that its disjunction power is comparatively large, so actuator bears very large impulsive force usually, the counter-force of bearing is also larger, therefore very easily wearing and tearing make its reliability reduce, and comprise actuator's parts such as yoke, contact support, armature.Meanwhile, there is iron loss, the consumption of copper loss homenergic and the special delivery of coil heating energy in yoke, makes yoke become contactor main heating source when coil electricity, and it is good that this just requires the yoke institution where he works to dispel the heat, and can not reduce its degree of protection again simultaneously.

And the complex structure of existing contactor, efficiency of assembling, lacks corresponding operator guards.Coil has coordinated with base body in the fixing general structure by self of base, and this cooperation is stiff, without buffering, matching part is damaged greatly early than other position.Coil rack assembles firm not in pedestal, and the friction that the shake of coil rack produces can reduce the useful life of pedestal.It is complicated that flash barrier in contactor, side hang auxiliary contact group mounting structure, difficult operation.The problems such as in addition, it is few that existing contactor also exists winding wiring terminal, and wiring is inconvenient, arc extinguishing efficiency difference.

Summary of the invention

The purpose of this utility model is the defect overcoming prior art, provides the contactor that a kind of structure is simple, reliability is high, efficiency of assembling is high.

For achieving the above object, the utility model have employed following technical scheme:

A kind of contactor, comprise base 11, be arranged on yoke 12 in base 11 and coil 13, described base 11 base plate is provided with yoke buckle 1103, for hooking the yoke 12 be contained in base 11, the both sides of yoke 12 are being provided with yoke bolster 14 with yoke buckle 1103 cooperation place, by yoke bolster 14 and yoke buckle 1103 clamping.

Preferably, described coil 13 is arranged in base 11 and is positioned at above yoke 12, be provided with the coil limited impression 1302 coordinated with yoke bolster 14, by coil limited impression 1302 and yoke bolster 14 fixed coil the two bottom sides of the coil rack 1301 of coil 13 is corresponding respectively.

Preferably, described yoke bolster 14 comprises and is positioned at middle the first buffer stopper 1401 coordinated with yoke buckle 1103 and the second buffer stopper 1402 for spacing coil 13 being connected to the first buffer stopper 1401 both sides; At the two bottom sides corresponding coil limited impression 1302 coordinated with the second buffer stopper 1402 of yoke bolster 14 and the buckle slot 1303 holding the first buffer stopper 1401 and yoke buckle 1103 of being provided with respectively of the coil rack 1301 of coil 13.

Preferably, base 11 base plate is provided with bottom heat radiation hole 1102.

Preferably, described bottom heat radiation hole 1102 is arranged on the contact-making surface of base 11 base plate and yoke 12.

Preferably, described yoke 12 one-tenth E type, the yoke 12 opening side of E type is upwards placed, the bottom surface of yoke 12 is installed on present 11 base plates, the bottom surface of yoke 12 comprises middle yoke pole-face and the inclined-plane at two ends, described base 11 base plate is provided with the yoke mounting groove 1101 and convex tendon 1105 that coordinate with the inclined-plane at yoke pole-face and two ends respectively, during installation, yoke pole-face is positioned at yoke mounting groove 1101, the inclined-plane at two ends leans against on the convex tendon 1105 at yoke mounting groove 1101 two ends, yoke buckle 1103 blocks yoke 12 from yoke mounting groove 1101 both sides by yoke bolster 14, described bottom heat radiation hole 1102 is arranged in yoke mounting groove 1101.

Preferably, the outside of base 11 base plate is provided with the rectangular boss 1106 coordinated with joint cover 15, joint cover 15 is provided with the rectangular opening coordinated with rectangular boss 1106, multiple stage contactor is fixed on joint cover 15 side by side, by the rectangular boss 1106 on respective base 11 with coordinate the installation realizing interlocking fixed mechanism respectively with joint cover 15.

Preferably, described rectangular boss 1106 is provided with counterbore 11061.

Preferably, described base 11 base plate two ends are respectively respectively equipped with three place's rectangular boss 1106 and two the first screw holes 1107, three place's rectangular boss 1106 and two the first screw holes 1107 be arranged in parallel, and two the first screw holes 1107 lay respectively in two gaps between three place's rectangular boss 1106; Article two, joint cover 15 is fixedly connected with base 11 with the second screw hole by the rectangular opening on it.

Preferably, the shut 1104 be positioned on base 11 outside yoke buckle 1103 coordinates with the buckle slot 1303 on coil 13 to be closed buckle slot 1303 and carries out spacing to coil 13.

Contactor of the present utility model coordinates the fixing of the yoke realized and buffer protection by the buckle on base with the yoke bolster in yoke, and structure is simple, efficiency of assembling is high.And coil rack is also fixed by yoke bolster, play the effect of coil rack protection simultaneously.The contact-making surface of floor installation yoke is provided with bottom heat radiation hole, can dispels the heat and can prevent outside foreign material from entering in base.The outside that the outside of base plate is provided with base plate coordinates with joint cover and realizes the installation that two interlock fixed mechanism.

Accompanying drawing explanation

Fig. 1 is the structure chart of the base assembly of the utility model contactor;

Fig. 2 is the structure chart of the base assembly of the utility model contactor;

Fig. 3 is the structure chart of the arc-extinguish chamber assembly of the utility model contactor;

Fig. 4-5 is assembling schematic diagrames of the utility model base and yoke;

Fig. 6 is the assembling schematic diagram of the utility model coil;

Fig. 7-8 is the utility model base and joint cover assembling schematic diagram;

Fig. 9 is the assembling schematic diagram of the utility model coil and protective cover;

Figure 10-12 is structure charts of the utility model protective cover;

Figure 13-14 is assembling schematic diagrames of the utility model coil and lug plate;

Figure 15-17 is assembling schematic diagrames of the utility model pedestal and liner;

Figure 18-19 is structure charts of the utility model pedestal;

Figure 20-21 is structure charts of the utility model contact supporting assembly;

Figure 22 is the structure chart that the utility model contact is supported;

Figure 23 is the structure chart that the utility model contact supports slide block;

Figure 24-26 is assembling schematic diagrames of the utility model arc-extinguish chamber and arc extinguishing cover cap;

Figure 27-28 is structure charts of the utility model short arc sheet;

Figure 29-31 is structure charts of the utility model auxiliary contact group traction piece;

Figure 32-33 is structure charts of the utility model pin rod;

Figure 34 is the assembling schematic diagram of the utility model pin rod;

Figure 35 is the structure chart of the utility model dust cap.

Embodiment

Below in conjunction with the embodiment that accompanying drawing 1 to 35 provides, further illustrate the embodiment of contactor of the present utility model.Contactor of the present utility model is not limited to the description of following examples.

As Figure 1-3, A.C. contactor of the present utility model comprises base assembly 1, base assembly 2 and arc-extinguish chamber assembly 3, and base assembly 2 is arranged on base assembly 1, and arc-extinguish chamber assembly 3 is arranged on base assembly 2.Described base assembly 1 comprises base 11, be arranged on yoke 12 in base 11 and coil 13, and yoke 12 is arranged on the base plate of base 11, and coil 13 is arranged in base 11 and is positioned at above yoke 12.The auxiliary contact group 24 that described base assembly 2 comprises pedestal 21, is arranged on the contact support module 22 in pedestal 21 and is arranged on pedestal 21 sidewall, is provided with flash barrier 23 at the two ends of pedestal 21.Described arc-extinguish chamber assembly 3 comprises arc-extinguish chamber 31, arc extinguishing cover cap 32, dust cap 33, short arc sheet 34, auxiliary contact group traction piece 35, pin rod 36.Arc-extinguish chamber 31 is arranged on pedestal 21, and arc extinguishing cover cap 32 is arranged on arc extinguishing space arc-extinguish chamber 31 being fixedly connected to form contactor by pin rod 36.Arc-extinguish chamber 31 is provided with three short arc sheets 34 of three-phase contactor, same phase the two poles of the earth arc-chute is connected by a short arc sheet 34, is positioned at middle short arc sheet 34 and is provided with auxiliary contact group traction piece 35.

As Figure 4-Figure 6, described base 11 base plate is provided with yoke buckle 1103, for hooking the yoke 12 be contained in base 11, the both sides of yoke 12 are being provided with yoke bolster 14 with yoke buckle 1103 cooperation place, by yoke bolster 14 and yoke buckle 1103 clamping, this yoke bolster 14 connects yoke 12 and base 11, and yoke 12 is fastening with base 11 firmly.Be provided with the yoke projection 1201 of installing yoke bolster 14 in the both sides of yoke 12, the yoke bolster 14 of rubber is enclosed within yoke projection 1201.Described yoke bolster 14 comprises and is integratedly positioned at middle the first buffer stopper 1401 coordinated with yoke buckle 1103 and the second buffer stopper 1402 for spacing coil 13 being connected to the first buffer stopper 1401 both sides.The volume of the first buffer stopper 1401 is less than the second buffer stopper 1402, first buffer stopper 1401 and the second buffer stopper 1402 is cylindrical.At the two bottom sides corresponding coil limited impression 1302 coordinated with the second buffer stopper 1402 of yoke bolster 14 and the buckle slot 1303 holding the first buffer stopper 1401 and yoke buckle 1103 of being provided with respectively of the coil rack 1301 of coil 13.

Described yoke 12 one-tenth E type, the yoke 12 opening side of E type is upwards placed, the bottom surface of yoke 12 is arranged on base 11 base plate, the bottom surface of yoke 12 comprises middle yoke pole-face and the inclined-plane at two ends, described base 11 base plate is provided with the yoke mounting groove 1101 and convex tendon 1105 that coordinate with the inclined-plane at yoke pole-face and two ends respectively, during installation, yoke pole-face is positioned at yoke mounting groove 1101, the inclined-plane at two ends leans against on the convex tendon 1105 at yoke mounting groove 1101 two ends, and yoke buckle 1103 blocks yoke 12 from yoke mounting groove 1101 both sides by the first buffer stopper 1401.Base 11 base plate is provided with bottom heat radiation hole 1102, bottom heat radiation hole 1102 is arranged on the contact-making surface of base 11 base plate and yoke, namely in yoke mounting groove 1101, bottom heat radiation hole 1102 is provided with, bottom heat radiation hole 1102 is multiple, the area that multiple bottom heat radiation hole 1102 surrounds is less than the area that yoke 12 projects on base 11 base plate, so not only ensure that the heat radiation of yoke but also well prevents outside foreign material from entering yoke pole-face in base.Also can be provided with louvre in base 11 both sides, form three groups of holes, three groups of holes, the end, both sides one.

During installation, first buffer stopper 1401 of yoke bolster 14 and the second buffer stopper 1402 are enclosed within three yoke projections 1201 of yoke 12, yoke 12 is installed in yoke mounting groove 1101, and yoke buckle 1103 is stuck on the first middle buffer stopper 1401, completes and fixes the preliminary of yoke 12.Coil 13 is arranged in yoke 12, the yoke arm 1202 of the yoke 12 of E type is through coil 13, the yoke mounting groove 1101 of coil rack 1301 both sides of coil 13 covers and carries out spacing to coil 13 on the second buffer stopper 1402, accommodate the first buffer stopper 1401 and yoke buckle 1103 in buckle slot 1303, the shut 1104 be positioned on base 11 outside yoke buckle 1103 coordinates with buckle slot 1303 to be closed buckle slot 1303 and carries out spacing to coil 13.

The base of the utility model contactor is provided with fastening type structure; for hooking the yoke be mounted in it; the yoke bolster that yoke is being equipped with rubber with the yoke place of being clasped is protected; coil rack is put in above yoke bolster; utilize the shape of the yoke bolster of this rubber with fixed coil; and yoke is fixed further; yoke bolster in yoke is except connecting base; can also as the position-limit mechanism of coil rack; fixed coil also plays a protective role to coil rack, and structure is simple, assembling aspect and long service life.

As Figure 7-8, be provided with the rectangular boss 1106 coordinated with joint cover 15 and the first screw hole 1107 in the outside of base 11 base plate of A.C. contactor, in order to coordinate with joint cover 15, interlocking device be installed; Three place's rectangular boss 1106 and two the first screw holes 1107 are respectively respectively equipped with at base 11 base plate two ends, rectangular boss 1106 is provided with counterbore 11061, three place's rectangular boss 1106 and two the first screw holes 1107 be arranged in parallel, and two the first screw holes 1107 lay respectively in two gaps between three place's rectangular boss 1106; Joint cover 15 is provided with the rectangular opening and the second screw hole that coordinate with rectangular boss 1106 and the first screw hole 1107.As shown in Figure 8, two A.C. contactors are fixed on joint cover 15 side by side, be fixedly connected with joint cover 15 respectively by respective base 11, realize location by the rectangular boss 1106 on base 11 and the rectangular opening on joint cover 15 and support, contactor and joint cover 15 are fixed by the first screw hole 1107 and the second screw hole by screw, realize the installation of two interlocking fixed mechanisms.

As shown in Fig. 6,9-12, described base 11 entirety forms the cavity holding coil 13, coil 13 is enclosed within yoke 12, coil 13 entirety is sunken in base 11, coil 13 two ends are provided with two baffle plates, and utilize the base wall 1108 of base 11 two ends and both sides, two ends to do position-limit mechanism, which limit coil 13 all degrees of freedom in a plane.At the installation terminal screw place of coil 13, namely terminal screw groove 1304 place is provided with terminal screw protective cover 16.Described terminal screw protective cover 16 comprises the protective block 1601 coordinated with the terminal screw groove 1304 of coil 13, and prolong the first protective plate 1602 that protective block 1601 roof extends and the second protective plate 1603 prolonging the extension of protective block 1601 sidewall, first protective plate 1602 bottom surface is provided with protective cover boss 1604, the second protective plate 1603 both sides side is provided with the protective cover chimb 1605 fastening coil.Coil 13 is provided with the protective cover draw-in groove 1305 coordinated with protective cover boss 1604, the side of both sides, terminal screw groove 1304 side is provided with the side groove 1306 coordinated with protective cover chimb 1605.During installation, protective block 1601 is arranged in terminal screw groove 1304, the space holding screw is left between bottom protective block 1601 and bottom terminal screw groove 1304, protective cover boss 1604 on first protective plate 1602 inserts in the protective cover draw-in groove 1305 of coil 13, and protective cover chimb 1605 fastens coil 13 by side groove 1306.Contactor of the present utility model expands winding wiring mode, safety easy to assembly by the lug plate inserting coil rack from the side.Be provided with terminal screw protective cover at terminal screw place to ensure personal security, by the coil baffle plate in base side wall and pedestal, coil fixed.

As illustrated in figs. 13-14, coil rack 1301 both sides of coil 13 are provided with the lug plate 17 inserting coil rack 1301 from the side, lug plate 17 two ends are respectively provided with a terminal screw installing hole 1701, side side be provided with two with the lug plate buckle 1702 of coil rack 1301 clamping, opposite side side is provided with four enamelled wire joint pins 1703, two one group totally two groups, an enamelled wire binding post 1703 in one group is for being fastened, another enamelled wire binding post 1703 is for welding, two T-shaped lug plate buckles 1702 and two groups of enamelled wire joint pins 1703 are symmetrical arranged relative to line sheet median plane 1704.The both sides of coil 13 are provided with the lug plate mounting groove installing lug plate 17, lug plate mounting groove is on the position coordinating T-shaped lug plate buckle 1702, extend again two T-shaped lug plate draw-in grooves 1307 more a little bigger a little than lug plate buckle 1702, for coordinating lug plate buckle 1702 link sheet 17.Described lug plate buckle 1702 comprises the triangle of front end or trapezoidal buckle Access Division 17021, and the bayonet 17022 be connected with buckle Access Division 17021, and the width of bayonet is less than buckle Access Division 17021; Described lug plate draw-in groove 1307 comprises the rectangle draw-in groove 13071 and the draw-in groove inclined-plane opening 13072 corresponding with bayonet 17022 that coordinate with buckle Access Division 17021, and lug plate buckle 1702 inserts in rectangle draw-in groove 13071 fixing by draw-in groove inclined-plane opening 13072.

As seen in figs. 15-17, be provided with the cavity holding contact support module 22 in pedestal 21, pedestal 21 housing that be fixedly connected to form contactor relative to the cavity of base 11, yoke 12, coil 13 and contact support module 22 are arranged in housing.The coil 13 being provided with yoke 12 in base 11 and being arranged in yoke 12, contact supporting assembly 22 is arranged in pedestal 21, and pedestal 21 is connected with base 11, and contact supporting assembly 22 is arranged on coil 13; Be provided with four pieces of protruding coil baffle plates 2102 in the corresponding position at inner four angles of pedestal 21, push down four angles of the coil 13 be arranged in base 11, coil 13 is fixed in the housing of contactor.

At pedestal 21 inner support contact support module 22 place, i.e. the installation initial position of contact support module 22, is provided with the liner 25 that two are played cushioning effect, to reduce impulsive force when contact support resets.Two place's liner installing holes 2101 of installation two liners 25 are provided with in pedestal 21, liner 25 is arranged in liner installing hole 2101, is arranged on contact support module 22 sentences with the sports limiting of pedestal 21 impact capacity absorbed when contact support module 22 resets with liner installing hole 2101 clamping.Described liner 25 comprises pad 2501, be positioned at two liner snap fits 2502 in the middle part of pad 2501 bottom surface and be positioned at two liner support protrusion 2503 at two ends, pad 2501 bottom surface, and pad 2501 end face is provided with two arc convex closures 2504.Be provided with the liner draw-in groove 21011 coordinated with liner snap fit 2502 in the liner installing hole 2101 of pedestal 21, be provided with the support slot 21012 coordinated with liner support protrusion 2503 in liner installing hole 2101 both sides.Pedestal 21 both sides sidewall is also provided with the slideway 2107 supporting slide block 2206 to coordinate with the contact of contact support module 22.

As depicted in figs. 18-19, the A.C. contactor of the present embodiment is multiple pole contactor, on pedestal 21 heterogeneous contactor each pole terminal block between be connected with flash barrier 23, increase ramp creepage distance by flash barrier 23.Three are respectively respectively equipped with for installing the wiring board slot 2103 of terminal block at the two ends of the base plate outer wall of pedestal 21 cavity, the terminal block of three-phase contactor respectively, between adjacent wiring board slot 2103, be positioned at pedestal 21 base plate two ends sidewall and be provided with the first flash barrier mounting groove 2104, flash barrier 23 can insert from the first flash barrier mounting groove 2104 one end open, and utilizes the installing hole of pedestal and with pedestal mating parts (as: arc-extinguish chamber), it is limited in this position securely.Be provided with the second flash barrier mounting groove 3102 at arc-extinguish chamber 31 correspondence position of arc-extinguish chamber assembly 3, when arc-extinguish chamber 31 is fixedly connected with pedestal 21, the first flash barrier mounting groove 2104 is inserted at the two ends of flash barrier 23 respectively and the second flash barrier mounting groove 3102 internal fixtion is installed.Described first flash barrier mounting groove 2104 and the second flash barrier mounting groove 3102 are T-shaped mounting groove, and the side of described flash barrier 23 correspondence is T-shaped installation portion.

The lateral wall of pedestal 21 both sides is provided with the auxiliary assembling groove group 2105 for hanging auxiliary contact group 24, often the auxiliary assembling groove group 2105 of group comprises two for coordinating the auxiliary assembling long recess 21051 of auxiliary buckle and two short grooves 21052 of the auxiliary assembling for spacing auxiliary contact, the length of auxiliary assembling long recess 21051 is longer than the short groove of auxiliary assembling 21052, four grooves makes auxiliary contact group 24 be fixed on pedestal sidewall jointly.Also being provided with the support rim 2106 for supporting auxiliary contact group 24 in lateral wall one end of pedestal 21 both sides, in the middle part of support rim 2106, being provided with supporting and location groove 21061.Two short grooves 21052 of auxiliary assembling are between two auxiliary assembling long recess 21051 in the horizontal direction; In vertical direction, two auxiliary assembling long recess 21051 are between two short grooves 21052 of auxiliary assembling and support rim 2106.

As shown in figures 20-21, contact support module 22 comprises contact support 2201, contact supports spring 2202, contact bolster 2203, armature 2204, contact support transverse axis 2205, contact supports slide block 2206.Contact supports that 2201 one end are connected with armature 2204, the other end is provided with dynamic tactile bridge, both sides are provided with contact and support slide block 2206, contact support 2201 and armature 2204 cooperation place are provided with contact and support spring 2202 and contact bolster 2203, during in order to absorb armature adhesive, the impulsive force that armature is supported contact.Contact supports that transverse axis 2205 is through armature 2204 bottom mounting apertures, and two ends and contact support that slide block 2206 is connected, support the transverse axis convex closure 22052 at transverse axis 2205 two ends and armature 2204 to extrude to cushion contact between contact support 2201 to support the counter-force that spring 2202 produces by contact, be fixed in contact support slide block 2206.Contact supports that slide block 2206 is as contact support module 22 movement parts guide, makes it move by short program.2204 one-tenth, armature E font, open at one end and yoke 12 open at one end are oppositely arranged, and the coil 13 of contactor can drive armature 2204 to be with moving contact support module 22 to slide up and down, and realizes the disjunction of contactor.

As shown in figures 20-21, described contact bolster 2203 is cylindrical, and one end side is provided with the buffering projection 22031 of multiple circle, and the other end is provided with bolster mounting groove 22032, is provided with bolster boss 22033 in bolster mounting groove 22032.Described contact supports the strip that transverse axis 2205 bends for middle part slightly upward, and two ends are provided with the transverse axis convex closure 22052 supporting slide block 2206 to coordinate with contact, and contact is supported to be provided with step tooth 22051 between the middle part of transverse axis 2205 and the transverse axis convex closure 22051 at two ends.

As shown in figure 22, described contact supports that the first contact that 2201 one end are provided with installation armature 2204 supports groove 22011, contact bolster 2203 is arranged on the first contact and supports in the middle part of groove 22011, support to be provided with the first contact support boss 22012 coordinated with the bolster mounting groove 22032 of contact bolster 2203 in the middle part of groove 22011 at the first contact, in the first contact support boss 22012, be provided with the second contact coordinated with bolster boss 22033 support groove 22013; Support that four angles place of groove 22011 is provided with installation four contacts and supports that the 3rd contact of spring 2202 supports groove 22014 at the first contact.Be provided with in the both sides of contact support 2201 and the 4th contact support groove 22016 that contact supports slide block 2206 is installed, the sidewall of the first contact support boss 22012 is provided with the 5th contact supporting transverse axis 2205 to coordinate with contact and supports groove 22015, the 4th contact supports with the 5th contact, groove 22016 supports that groove 22015 communicates.

As shown in figure 23, described contact supports that slide block 2206 comprises slide block connecting portion 22061 and the skid portion 22062 of L-type setting; The slide block lug 22065 of assembling is extended in slide block connecting portion 22061 both sides, the sidewall that slide block connecting portion 22061 is connected with contact support 2201 is provided with the transverse axis draw-in groove 22063 that contact supports transverse axis 2205 is installed, also be provided with the slide block stopper slot 22064 supporting the male cooperation in groove 22016 with the 4th contact, be provided with slide block fixing lug boss 22068 in skid portion 22062 and the top of slide block connecting portion 22061 junction.22062 one-tenth, skid portion convex, the side comprising the first rectangular portion 22066 and the second rectangular portion 22067, first rectangular portion 22066 is the spigot surface coordinated with pedestal 21.

As shown in Figure 3, described arc-extinguish chamber assembly 3 comprises arc-extinguish chamber 31, arc extinguishing cover cap 32, dust cap 33, short arc sheet 34, auxiliary contact group traction piece 35, pin rod 36.Arc-extinguish chamber 31 is arranged on pedestal 21, and arc extinguishing cover cap 32 is arranged on arc extinguishing space arc-extinguish chamber 31 being fixedly connected to form contactor by pin rod 36.Arc-extinguish chamber 31 is provided with three short arc sheets 34 of three-phase contactor, the arc-chute of same phase two poles is connected by a short arc sheet 34, is positioned at middle short arc sheet 34 and is provided with auxiliary contact group traction piece 35.Arc extinguishing cover cap 32 top is provided with through hole 3204, and auxiliary contact group traction piece 35 one end can pass from through hole 3204, and through hole is sealed to prevent dust from entering contactor inside with the boss clamping on arc extinguishing cover cap 32 by dust cap 33.

As shown in figs 24-26, arc structure is provided with between phase and phase at arc-extinguish chamber assembly 3, this arc structure is divided into the second arc block reinforcement 3201 on arc extinguishing cover cap 32, and the first arc block reinforcement 3101 on arc-extinguish chamber 31, first arc block reinforcement 3101 and the second arc block reinforcement 3201 are engaged mutually, considerably increase creepage distance between phase and phase.Three short arc sheets 34 are arranged on arc-extinguish chamber 31, the arc structure of the first arc block reinforcement 3101 and the second arc block reinforcement 3201 formation is equipped with in the both sides of each short arc sheet 34, be provided with step surface inside two the first arc block reinforcements 3101 of each short arc sheet 34 both sides, the second arc block reinforcement 3201 is inserted on the step surface in the second arc block reinforcement 3201 and is mutually engaged.Be provided with the second flash barrier mounting groove 3102, second flash barrier mounting groove 3102 at the correspondence position at arc-extinguish chamber 31 two ends and fix flash barrier 23 with the first flash barrier mounting groove 2104 of pedestal 21.Arc-extinguish chamber 31 is provided with the first pin rod hole 3103 of installing pin rod 36, and on arc extinguishing cover cap 32, correspondence position is provided with pin rod erection column 3202.

As shown in Figure 27-28, the arc-chute of same phase two poles is connected by a short arc sheet 34, described short arc sheet 34 one-tenth " W " font, and to shorten the arcing time, in the middle part of short arc sheet 34, both sides have a bit of rectangular channel 3403 for installing contact traction piece 35.Short arc sheet 34 comprises middle short arc brace 3401 and is positioned at the hook part 3402 at short arc brace two ends, is provided with rectangular channel 3403 in the both sides of short arc brace 3401.Described short arc sheet 34 is one-body molded, is bent upwards again and forms hook part 3402 after short arc brace 3401 two ends are bent downwardly respectively, and the end that hook part 3402 is bent upwards is vertical with short arc brace 3401 and higher than short arc brace 3401.

As shown in figures 29-31, described auxiliary contact group traction piece 35 is arranged on middle short arc sheet 34, auxiliary contact group traction piece 35 is provided with the installation cavity 3501 of a rectangle, installation cavity 3501 base is provided with a little installation gap makes short arc sheet 34 can loading in side, the inwall installing cavity 3501 is provided with the traction piece positioning convex coordinated with rectangular channel 3403, motion spring 3503 is arranged on to be installed in cavity 3501, one end is connected with short arc sheet 34, and the other end is connected with installation cavity 3501 base.Auxiliary contact group traction piece 35 carries motion spring, provides counter-force to be resetted by main noddle on contactor support.

As illustrated in figs. 32-34, described pin rod 36 is for fixing arc-extinguish chamber 31 and arc extinguishing cover cap 32, comprise pin rod axle and be enclosed within the reaction spring composition on pin rod axle, the lock shaft of crossing pin rod axle is provided with in one end of pin rod axle, pin rod is screwed in the mechanism coordinated with arc-extinguish chamber, fixing arc-extinguish chamber 31 and arc extinguishing cover cap 32.

As shown in Fig. 3,35, described dust cap 33 is installed with arc extinguishing cover cap 32 snap fit, described dust cap 33 comprises the dust-proof sliding tray 3301 at middle part, dust-proof sliding tray 3301 one end is provided with the first baffle plate 3302, both sides are respectively equipped with second plate washer 3303, be provided with dust-proof location division 3304 at the first baffle plate 3302 with the intersection of the second plate washer 3303 of both sides, be provided with inverted "L" shaped dust-proof buckling end 3305 at dust-proof sliding tray 3301 other end.The middle part of described arc extinguishing cover cap 32 outer surface is provided with through hole 3204, the two ends of through hole 3204 are two locating convex blocks 3203 coordinated with dust-proof location division 3304 respectively, locating convex block 3203 leaves gap, the other end is the fastening boss 3205 coordinated with dust-proof buckling end 3305, is provided be provided with two pits of depression in the both sides of through hole 3204.During assembling, dust-proof location division 3304 embeds spacing assembling in the groove with locating convex block 3203 end, then presses dust-proof buckling end 3305 and itself and locating convex block 3203 buckle are fixed, namely complete assembling.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.

Claims (10)

1. a contactor, comprise base (11), be arranged on yoke (12) in base (11) and coil (13), it is characterized in that: described base (11) base plate is provided with yoke buckle (1103), for hooking the yoke (12) be contained in base (11), the both sides of yoke (12) are being provided with yoke bolster (14) with yoke buckle (1103) cooperation place, by yoke bolster (14) and yoke buckle (1103) clamping.

2. contactor according to claim 1, it is characterized in that: described coil (13) is arranged in base (11) and is positioned at yoke (12) top, the two bottom sides of the coil rack (1301) in coil (13) respectively correspondence is provided with the coil limited impression (1302) coordinated with yoke bolster (14), by coil limited impression (1302) and yoke bolster (14) fixed coil.

3. contactor according to claim 2, is characterized in that: described yoke bolster (14) comprises and is positioned at middle the first buffer stopper (1401) coordinated with yoke buckle (1103) and the second buffer stopper (1402) for spacing coil (13) being connected to the first buffer stopper (1401) both sides; The two bottom sides of the coil rack (1301) in coil (13) respectively correspondence is provided with the coil limited impression (1302) coordinated with second buffer stopper (1402) of yoke bolster (14) and the buckle slot (1303) holding the first buffer stopper (1401) and yoke buckle (1103).

4. contactor according to claim 1, is characterized in that: on base (11) base plate, be provided with bottom heat radiation hole (1102).

5. contactor according to claim 4, is characterized in that: described bottom heat radiation hole (1102) is arranged on the contact-making surface of base (11) base plate and yoke (12).

6. contactor according to claim 5, it is characterized in that: described yoke (12) becomes E type, yoke (12) the opening side of E type is upwards placed, the bottom surface of yoke (12) is installed on present (11) base plate, the bottom surface of yoke (12) comprises middle yoke pole-face and the inclined-plane at two ends, described base (11) base plate is provided with the yoke mounting groove (1101) and convex tendon (1105) that coordinate with the inclined-plane at yoke pole-face and two ends respectively, during installation, yoke pole-face is positioned at yoke mounting groove (1101), the inclined-plane at two ends leans against on the convex tendon (1105) at yoke mounting groove (1101) two ends, yoke buckle (1103) blocks yoke (12) from yoke mounting groove (1101) both sides by yoke bolster (14), described bottom heat radiation hole (1102) is arranged in yoke mounting groove (1101).

7. contactor according to claim 1, it is characterized in that: the outside of base (11) base plate is provided with the rectangular boss (1106) coordinated with joint cover (15), joint cover (15) is provided with the rectangular opening coordinated with rectangular boss (1106), multiple stage contactor is fixed on joint cover (15) side by side, by the rectangular boss (1106) on respective base (11) with coordinate with joint cover (15) installation realizing interlocking fixed mechanism respectively.

8. contactor according to claim 7, is characterized in that: described rectangular boss (1106) is provided with counterbore (11061).

9. the contactor according to claim 7 or 8, it is characterized in that: described base (11) base plate two ends are respectively respectively equipped with three place's rectangular boss (1106) and two the first screw holes (1107), three place's rectangular boss (1106) and two the first screw holes (1107) be arranged in parallel, and two the first screw holes (1107) lay respectively in two gaps between three place's rectangular boss (1106); Article two, joint cover (15) is fixedly connected with base (11) with the second screw hole by the rectangular opening on it.

10. contactor according to claim 3, is characterized in that: coordinate buckle slot (1303) is closed with the buckle slot (1303) on coil (13) at the shut (1104) be positioned on base (11) in yoke buckle (1103) outside and carry out spacing to coil (13).