CN2197737Y - Small size integrated switch - Google Patents

Abstract

The utility model provides a small size integrated switch which is mainly composed of a turn knob, a three-phase double-break switch, a fixed contact disc assembly, an integrated rotor, etc. The small size integrated switch is a changeover switch which is matched with a variable-speed electric motor to convert wire connection in order to change the electrode of the motor. The on-off circuit of a power supply is separated from the pole changing circuit which has no power conversion; the utility model can control the multi-speed asynchronous machines with two speed levels, three speed levels and four speed levels. The small size integrated switch has the advantages of simple structure, reliable performance, convenient operation, flexible conversion, small size, low manufacturing cost, etc.

Description

Small size integrated switch

Miniature integrated switch described in the utility model is a kind ofly to match with the speed change asynchronous machine, in empty load of motor, load down conversion three-phase winding connection mode, makes a kind of novel, the change over switch that the small size multispeed asynchronous motor is suitable for of motor pole-changing.

At present the used control switch of multispeed asynchronous motor belongs to the variable connector that all there is arc-control device on every road, so phase complex structure, size, weight is big, cost is higher.The utility model design is mainly the cheap energy-saving multi-speed blower fan of " 93216805.1 " number patent.The control of variable-pole multi-speed asynchronous machines such as " 93213946.9 " number patent permanent power multi-change speed bench drill and " 88107625.2 " number patent energy-saving multi-speed asynchronous motor provides new way.Wait the multispeed asynchronous motor of exerting oneself at a high speed owing to contain in the above-mentioned patent, permanent merit multispeed asynchronous motor, the energy-saving multi-speed asynchronous machine is always drawn line end for 6～18 that 2 fast machines wherein, 3 fast machines and 4 fast machines are general, and its gear is 2 grades～4 grades.When using traditional universal seclector, cam controller or electromagnetic contactor, establish get multispeed asynchronous motor be 2 speed 6 or 4 speed 18,, then the current interruption contact sum of change over switch will be 3+6=9 head or 18 * 4=72 head.Each in addition shifted all dynamic/static contacts are all with on-off circuit breaking arc simultaneously, so the easy scaling loss of contact, required total current interruption dynamic/static contact quantity is very big.At existing problem in the conventional switch technology, the design of Shi Hangxin is developed and a kind ofly is applicable to that the miniature integrated switch of multispeed asynchronous motor is very necessary.

For satisfying the characteristics of blower fan, bench drill, energy-saving multi-speed asynchronous machine multilead end, reduce the change over switch volume, and satisfy the needs of multiplex circuit conversion, the utility model adopts integrated combinational circuit structure, the load current interruption circuit of multispeed asynchronous motor pole-changing circuit and break-make three phase mains is separated, all can control by the utility model switch no matter multispeed asynchronous motor is 2 speed, 3 speed or 4 speed.This miniature integrated switch is a kind of multistation change over switch, by switch knob (knob) multi-state position speed change, possesses 2 fast 2 speed change positions, 3 fast 3 speed change positions, 4 fast 4 speed change positions, and the K03 type two-direction switch that inserts a cheapness of can connecting when needing rotating gets final product.

The utility model provides a kind of miniature integrated switch, its structure is shown in each accompanying drawing, mainly by knob (or main handle is the gear joystick), the three-phase double-break switch, integrated rotor, the dish assembling of fixed contact garden waits parts to form, knob drives square shaft by dog screw, square shaft drives integrated rotor and unifies with the latter, integrated rotor top, the square shaft place of knob below is embedded with 3 little cam garden sheets, driven by square shaft, can manually control the break-make operating mode of movable contact spring break-make external circuit operating mode on the integrated rotor and three-phase double-break switch, and control break-make gear figure place.For example when upper, middle and lower 3 cam bits, every has 2 half garden shape small gaps that are mutually 180 ° of angles, and when small gap is with respect to middle square hole displacement hexagonal angle successively on 3 cam bits of upper, middle and lower, cooperation by moving contact rack, promptly can obtain every half-twist angle and just disconnect, every Rotate 180 ° angle is with regard to the double speed asynchronous machine three-phase double-break switch of conducting; If with upper, middle and lower 3 cam bits be designed to last slice be mutually hexagonal angle 3 half garden shape small gaps arranged, and middle sheet and following sheet all are whole gardens, then can obtain 60 ° of angles of every rotation just disconnection, every rotation hexagonal angle with regard to conducting three speed asynchronous machines once three-phase double-break switch; If every of 3 cam bit are opened 4 half garden shape small gaps at an angle of 90 mutually, and upper, middle and lower 3 cam bits are successively during the displacement hexagonal angle, then can obtain every rotation 45 and just disconnect, the half-twist angle is with regard to conducting four speed asynchronous machine three-phase double-break switches once.The three-phase double-break switch is by 3 basic modules of universal seclector that are mutually the hexagonal angle distribution, is that dynamic/static contact, moving contact rack and spring assembly are constituted in fact.Integrated rotor embeds a plurality of gardens dish mainly by armature spindle (being square shaft) on the axle, be embedded with movable contact spring on each garden dish, and internal connection line is all arranged between each movable contact spring, and number is coiled in the garden, how fast the movable contact spring number average is relevant with gear number and power traction outlet terminal sum.Usually the double speed machine has 6 lead terminals, additional power source A, B, a C3 terminal, totally 9 terminals, because the double speed machine has 2 gears, so integrated internal rotor just has 2 groups of independently internal connection lines, as adopt 3 garden dishes, and be mutually 60 ° of angles on the dish of every garden and distribute, be embedded with 6 movable contact springs and can satisfy the demand.Three machines and four speed asynchronous machine can the rest may be inferred trot, usually for four fast machines of 18 lead ends, take into account power line, total lead end subnumber of every kind of rotating speed is 18+3=21, need 7 garden dishes altogether, be mutually 30 ° of angles distributions on each garden dish and be embedded with 12 movable contact springs, its internal rotor has 4 groups of independence wiring totally 21 * 4=84, this and 12 * 7=84 equate, so 7 garden dishes can be satisfied the demand.

The dish assembling of fixed contact garden is made up of several garden dish seats, garden dish seat number is constantly equal to integrated rotor garden dish number, fixed contact number on each garden dish seat all equals 3(and three equal value), for guaranteeing that contact is reliable between the dynamic/static contact, on each fixed contact garden post, be with the garden spring, for making water conservancy diversion reliable, fixed contact and garden dish seat are gone up between the binding post and are provided with soft wiring, integrated rotor moving contact has many group back panel wirings, by moving, sliding contact between the fixed contact, asynchronous machine pole-changing wiring under every kind of rotating speed shelves is all connected with the three-phase external power, so all fixed contact binding posts on the dish seat of fixed contact garden have only a fixed position, but integrated rotor moving contact group has a plurality of positions, and its positional number is constantly equal to asynchronous machine gear number.

The dish assembling of fixed contact garden is fastening by 3 long spiro nails, constitutes a garden ring-shaped sleeve, and it is double to play the switch housing effect, thereby realizes minimum parts in addition, minimum dimension microminiaturization switch.

The speed-change and gearshift of miniature integrated switch, or be its energising, power process, must moving earlier by the three-phase double-break switch during outage, then integrated rotor carries out the change poles wiring; Must be under no electrician's condition during energising, integrated rotor carries out the pole-changing wiring, then three-phase double-break switch energized.This function is to drive square shaft by knob, and the Automatic Program that coaxial both the mechanical mats of 3 cam bits on the square shaft and integrated rotor close guarantees.

The utility model has 12 accompanying drawings, wherein:

Accompanying drawing 1 is the general assembly drawing of miniature integrated switch.

Accompanying drawing 2 is three-phase double-break switch assembling assumption diagrams.

Accompanying drawing 3 is vertical views of accompanying drawing 2.

Accompanying drawing 4 is integrated rotor assembly drawings.

Accompanying drawing 5 is end views of accompanying drawing 4.

Accompanying drawing 6 is wiring construction figure of double speed asynchronous machine 2P=4.

Accompanying drawing 7 is wiring construction figure of double speed asynchronous machine 2P=2.

Accompanying drawing 8 is double speed asynchronous machine 2P=4 equivalent measuring figure.

Accompanying drawing 9 is equivalent measuring figure of double speed asynchronous machine 2P=2.

Accompanying drawing 10 is to join the integrated internal rotor winding diagram of double speed asynchronous machine.

Accompanying drawing 11 is the dish assemblings of fixed contact garden.

Accompanying drawing 12 is miniature integrated switch general assembly drawings.

Among the figure: 1, knob 2, three-phase double-break switch 3, cover plate 4, top board 5, fixed contact garden dish assembling 6, integrated rotor 7, base plate 8, nut 9, packing ring 10, long spiro nail 11, garden base plate 12, screw 13, fixed contact 14, dynamic/static contact seat 15, moving contact spring 16, moving contact 17, moving contact rack 18, trip bolt 19, cam (assembling) 20, cam 21, cam 22, contact base screw 23, contact flap 24, garden cover plate 25, knob screw 26, armature spindle 27, garden dish 28, internal connection line 29, movable contact spring 30, quilting rivet 31, garden dish seat 32, garden spring 33, fixed contact 34, soft wiring 35, square head screw 36, packing ring 37, lead-out wire hole 38, fixed contact assembling (column) 39, integrated rotor 40, switch case 41, ratchet detent mechanism 42, three-phase double-break switch 43, handle

Concrete enforcement of the present utility model is shown in accompanying drawing 1～accompanying drawing 11.To be used in the pole-changing number is 2Pi=4/2,8/4,6/4; 8/6; The double speed asynchronous machine of 12/6 all different sizes.The double speed asynchronous machine of all above-listed five kinds of specifications, all have identical (1), (2), (3), (4), (5), (6) totally six lead ends in numbering, common multipole number is a delta connection, and few number of poles is the 2Y wiring, can be summed up as shown in accompanying drawing 6 and accompanying drawing 7.Can change and line up the equivalent accompanying drawing 8 and the wiring of accompanying drawing 9.Analysis chart 8 and Fig. 9 circuit, be not difficult to find out that three gardens can using each garden dish to contain 6 uniform movable contact springs are coiled and constitute that the back panel wiring between three gardens dishes as shown in figure 10.

The assembling of piece number 5 fixed contact gardens dish as shown in figure 11 in the accompanying drawing 1, it is to be made of 7 parts: garden dish seat 31 adopts plastics to form through punching block hot pressing, garden spring 32 adopts the coiling of high-quality spring steel wire, fixed contact 33 adopts brass to hold in both hands car system, soft wiring 34 adopts the multiply annealed copper wire, square head screw 35 plays self-align double binding post effect, and packing ring 36 and nut 8 are as the wiring securing member of miniature integrated switch.

Miniature integrated switch shown in the accompanying drawing 1, the accompanying drawing 12 variant slightly with structure compares, allow the omission switch housing, allow and omit the ratchet detent mechanism, thereby simplify and dwindle switch size, but when omitting ratchet, for the piece number 15 of three-phase double-break switch in the accompanying drawing 2, should adopt the moving contact spring of high-tension.Because the parts fixed contact garden of accompanying drawing 1 miniature integrated switch dish assembling 5 must be adopted moldings, can consider to adopt accompanying drawing 12 miniature integrated switchs during a small amount of or single production.

Claims (6)

1, a kind of miniature integrated switch is characterized in that this switch mainly is made of institutes such as knob 1, three-phase double-break switch 2, fixed contact garden dish assembling 5, integrated rotor 6, base plates 7; Long spiro nail 10, nut 8, packing ring 9 make up three-phase double-break switch 2, fixed contact garden dish assembling 5, integrated rotor 6 and base plate 7 in aggregates by cover plate 3 and top board 4.

2, miniature integrated switch according to claim 1 is characterized in that three-phase double-break switch 2 is to be fixed on the garden base plate 11 by garden base plate 11, dynamic/static contact seat 14, nationality contact base screw 22; By being loaded on the dynamic/static contact seat 14, moving contact 16 is inlaid in 17 li of moving contact racks to fixed contact 13 in pairs, by moving contact spring 15 moving contact 16 is pressed on every pair of fixed contact; Half garden shape small gap, three cams of having arc angle about 15 degree in garden on the diverse location of cam 19, cam 20 and cam 21 all are flush-mounted on the armature spindle 26, and the three-phase circuit of break-make power supply and the pole-changing changing-over circuit of multispeed asynchronous motor multilead end are separated.

3, miniature integrated switch according to claim 1, it is characterized in that integrated rotor 6 coils 27 by armature spindle 26 and garden and forms, the garden dish is provided with internal connection line 28, movable contact spring 29 and quilting rivet 30, total the increase that garden dish number is counted both with multispeed electric machine lead-out wire number of terminals and multispeed electric machine gear increases; Internal connection line group number is constantly equal to multispeed asynchronous motor gear number, has 2 or 3 or 4 three numbers to choose.

4, miniature integrated switch according to claim 1, it is characterized in that fixed contact garden dish assembling 5, it is by garden dish seat 31, fixed contact 33 and garden spring 32 is inserted in the garden post of fixed contact 33, again its afterbody burn-on soft wiring 34, adopt nut 8, packing ring 36 to be anchored on to constitute on the square head screw 35.Garden dish number in the fixed contact garden dish assembling 5 is constantly equal to the number of garden dish 27.

5, miniature integrated switch according to claim 1, it is characterized in that knob 1 and armature spindle 26 both rigid connections, thus in the break-make of three-phase double-break switch and integrated rotor in many cover back panel wirings a certain cover coil between the break-make of assembling lead-out wire terminal on 5 with the fixed contact garden and exist mechanical interlocking.

6, miniature integrated switch according to claim 1 is characterized in that fixed contact garden dish assembling 5 can use three column fixed contacts assemblings 38 to replace.

Images