CN2271025Y - Rotating step-by-step machine operating key - Google Patents

Abstract

The utility model relates to a rotating step-by-step machine operating key which comprises a housing, a rotor which is supported in the housing and wound around an axial line, a plurality of stationary switch contacts which are distributed by winding around the rotor in the housing, a movable switch contact which is arranged on the rotor, an actuator carrying out reciprocal motion on an angle, wherein, the actuator is supported in the housing to move around the axial line angularly to drive the rotor in a driving direction to move the movable contact to contact with one or more electrical contacts or to disengage from electrical contact; the rotor is provided with a peripheral annular rib strip for lengthening the surface path of the upper part of the annular rib strip between two rotor ends and for decreasing the accidental dangers of sparking, electric arc or jump spark caused between at least one contact in the stationary contact at the upper part of the rotor end and the movable contact which is disinclined to electrical contact on the end part of the other rotor.

Description

Rotary stepping switch

The utility model relates to a kind of rotary stepping switch.

Rotary stepping switch itself is known, for example as disclosed in the U.S. Patent application 9215713.0 (publication number is 2266187A).This early stage switch comprises the rotor that supporting of a shell is rotated around an axle in the enclosure, four are positioned at the shell scope static switch that son distributes that rotates and touch part, one is contained in epitrochanterian movable switch and touches part, a reciprocating driving-disc on angle, it is supported in the enclosure around this axle and does angular movement so that thereby rotary rotor makes movable switch touch part to be moved into and to touch with static switch that one or more the work electricly contacts or break away from electric contact in the part on driving direction, be arranged on and be used for to make driving-disc one stepping angle to be driven the one-way clutch apparatus that passes to rotor between driving-disc and the rotor, with the unidirectional retaining device that is provided with in the enclosure, this unidirectional retaining device comprises as mutual first and second parts of engagement, so as driving-disc with the reverse non-driving direction of driving direction on rotor is stopped during revolution not rotate.

Movable switch touches on the end that part generally is installed in rotor, and its part extends to the other end of rotor, touches that part of the engagement selectively that part is positioned to movable switch touches part at this static switch in end place and contacts.Static switch one of touch in the part under the higher voltage level with situation that movably switch spare contacts under, other static switch touches the actual ground state that is in of part.Under such voltage difference, particularly in the design of the switch of compactness and/or on switch touches surperficial path between the part, be coated with under the situation of dust/dirt, accidental electric arc that produces or spark may puncture switch and touch part.

According to the utility model, a kind of rotary stepping switch is provided, this switch comprises a shell, supporting is in the enclosure around the rotor of a rotational, a plurality of shell scope static switches that son distributes that rotate that are positioned at touch part, one is contained in epitrochanterian movable switch and touches part, a reciprocating actuator on angle, it is supported in the enclosure does angular movement around this axis, so that rotary rotor on driving direction, thereby making movable switch touch part is moved into and touches with static switch that one or more the work electricly contacts or break away from electric contact in the part, be arranged on and be used for to make actuator one stepping angle to be driven the one-way clutch apparatus that passes to rotor between actuator and the rotor, with the unidirectional retaining device that is provided with in the enclosure, this unidirectional retaining device comprises first and second parts that mesh as mutually, so that actuator with the reverse non-driving direction of driving direction on revolution the time rotor is stopped not rotate, described rotor has the surface apparatus that extends along its periphery so that extend the surperficial path between relative rotor tip on it, whereby, reduce to touch in the part at least one movable switch that touches part and on another rotor tip, do not prepare to do electric contact and touch the accidental spark, the danger of electric arc or arcing of occurring between the part at the static switch on a described rotor tip.

In a preferred embodiment, surface apparatus is projection.

Surface apparatus is preferably provided by an integrally formed rib.

Preferably, movable switch touches part around described another rotor tip setting, and its part extends on the described rotor tip.

The best then is that the position that the described part that surface apparatus touches part at movable switch is traversed it disconnects.

In a concrete structure, static switch one of touches in the part and to be arranged on described other rotor tips and to touch with movable switch that part is electric to be contacted, and another static switch touches some other parts that touch of part or and is arranged on and is used for electric contact of described part of touching part with movable switch out of the ordinary when rotor rotation on the described rotor tip.

In a concrete structure, movable switch touches part and has a middle body and a plurality of integral part that radially extends, these integral parts are converted into the right angle basically so that be placed on the same side of middle body, and whole movable switch touches part and is arranged on tightly on described the other end of rotor.

Preferably, rotor has a plurality of grooves that movable switch touches the corresponding radially extension of part that are used to hold around its peripheral intervals ground.

Followingly by way of example the present invention is described in detail with reference to accompanying drawing, wherein:

Fig. 1 is the decomposition diagram of the embodiment of the utility model rotary stepping switch;

Fig. 2 is the decomposition diagram of the shell of rotary stepping switch shown in Figure 1;

Fig. 3 is the perspective view of switch shell shown in Figure 2 under assembled state;

Fig. 4 is the cross sectional side view of switch shell shown in Figure 2 under disassembly status;

Fig. 5 is the cross sectional side view of switch shell shown in Figure 4 under assembled state;

Fig. 6 is the decomposition diagram of the shell of traditional rotary stepping switch;

Fig. 7 is the upper casing part perspective view on reverse position of rotary stepping switch 1 shown in Figure 1, accommodates a rotor in it and movably touches part with static switch.

Fig. 8 is the perspective view that movable and static switch shown in Figure 7 touches part;

Fig. 9 A to 9D is the perspective illustration that movable and static switch shown in Figure 8 touches part, and wherein movable switch touches part and touches the switch position that part turns to corresponding different angles with respect to static switch.

Figure 10 A is the cross sectional side view of rotary stepping switch shown in Figure 3 on backward position, and (also distinguishing) shows switch rotor shown in Figure 7; With

Figure 10 B is corresponding to Figure 10 A, but it shows the different a little switch rotor that uses the neither one circular rib.

At first referring to Fig. 1, there is shown one and embody rotary stepping switch 10 of the present utility model, this switch 10 comprises one by a upper casing portion 12 and the plastic casing 11 that lower casing portion 13 forms, and a dividing plate 14 that is clipped between shell portion 12 and 13.Lower casing portion 13 has a diapire 13A and a whole central tubular axle 15 of holding up from it.Axle 15 is passed in the medium pore 16 of formation on the dividing plate 14 and points to a whole central tubular post 17 that hangs down from the roof 12A of upper casing portion 12 with the coaxial heart of its free end 15A.

Now referring to Fig. 2 to 5, shell portion 12 and 13 tightens with 11B at its opposite flank 11A and to be in the same place, so that form the switch shell 11 of assembling.On each shell-side face 11A or 11B, upper casing portion 12 has a central vertical hole 8, and lower casing portion 13 has a upright integral lugs 9 of central authorities of passing corresponding hole 8.Hole 8 and lug 9 have same basically width.Each lug 9 has an outer offset shape free end 9A, form a side direction hook-type protuberance on this free end, the outside of flange 8a that it is arranged to engage the upper end in hole 8 is fastened to shell portion 12 and 13 together by a kind of quick packing interaction tightly thus.

The outside near the hole 8 on each shell-side face 11A or the 11B is provided with an integral lugs of dangling 6, and this lug 6 has the width basic the same with hole 8 and aims at it.Be formed with a vertical groove 7 (if perhaps open side is being sealed then is being the hole) on the outside near the lug 9 on each shell-side face 11A or the 11B, this groove has the width the same basically with lug 9 and aims at it.Under the situation in the hole 8 of upright lug 9 embedding correspondences fast, the lug 6 that is dangling embeds each upper end of corresponding grooves 7 tightly, overcome any undesirable external force whereby, for example install or use in moment of torsion or pulling force, effect stiffened shell portion 12 and the clamping effect together of 13 clampings.

As mentioned above, each upright lug 9 has and the same basically width in corresponding hole 8, and whereby, they are entirely meshed together on the side.Equally, each lug that is dangling 6 is wide like that with corresponding grooves 7 basically, and whereby, they are entirely meshed together on the side.Use two relative lugs 9 and 6 on each shell-side face 11A or 11B, therefore this side intermeshing (vertically) length be lengthened out, and promptly is the length sum of lug 9 and 6.

Obviously, the root of upright lug 9 switch shell 11 making or use in bear a kind of undesirable external force and do the time spent and rupture easily.When being protected by the engagement between lug 6 and the corresponding groove 7 of dangling, the root of upright lug 9 can reduce the danger of this fracture.

Fig. 6 shows a traditional rotary stepping switch, and wherein upper casing portion and lower casing portion tighten together by two rivets on the opposite side of switch shell.Therefore employed rivet must be made with metal material, uses this rivet can be expensive.Hit and the switch shell of plastics is sustained damage when flat in that the rivet end that they are less is installed.It is also understood that, use rivet to be certain to increase the size of switch.

Now referring to Fig. 7 and 8.Rotary stepping switch 10 also comprises the switch mechanism 18 and the driving mechanism 19 that is positioned within lower casing portion 13 scopes that are positioned at upper casing portion 12 scopes.

Switch mechanism 18 disposes static switch that the isogonism of groove 21 scopes of four each correspondingly-shaped that are arranged in upper casing portion 12 separates and touches part 20 and one and be bearing in a movable switch that is roughly on the columnar rotor 23 and touch part 22.Rotor 23 forms the part of switch mechanisms 18, and unitary rotor preferably.

It all is to form with the copper sheet of a bending that static switch touches part 20, and be divided into two groups of 20A and 20B, preceding group of 20A of a formation is positioned at a darker groove 21A (part 20A is touched in the bottom), and back group of 20B of three formations is positioned at corresponding more shallow groove 21B (part 20B is touched on top) relatively.Be formed with four otch 24 in the corresponding bight of upper casing portion 12, each otch all provides for the import of preparing and corresponding static switch touches the lead that part 20 is connected.

Rotor 23 has a central axis hole 23A; Axle 15 passes its extension and rotates thereon so that supporting rotor 23.Rotor 23 comprises that also is arranged on the rotor 23 annular projection overall circumference rib 23B at half length place approximately.Movable switch touches part 22 and is provided with a copper coin, and this copper coin has middle body 22A and four longitudinal edge wing 22B and 22C that isogonism separates of a packing ring sample.The twice that limit wing 22C is about other three limit wing 22B is so long.All limit wing 22B and 22C all upwards are folded into perpendicular to middle body 22A and extend, and form the configuration of a jar thus.Switch touches part 22 just from the following end half one that closely is arranged on rotor 23 coaxially like this, and its short limit wing 22B arrives right-hand behind rotor rib 23B, and higher limit wing 22C arrives the top of rotor 23.The rib 23B of rotor crosses its part at higher limit wing 22C and disconnects.Rotor 23 has four perpendicular grooves 23C that are spacedly distributed around its periphery to be used to hold and to touch part limit wing 22B and 22C accordingly, makes that touching part limit wing 22B and 22C just in time entirely embeds in the corresponding grooves 23C and with the periphery surface of rotor and flush.

Shown in Fig. 9 A to 9D, switch touches part 20 and 22 structure and layout arrangement and is designed to multiple different switch combination is provided touches part 20A (live wire L) and other static switches touch any one electric bridge joint among the part 20B (load-1 ,-2 and-3) so that provide across static switch by suitably using movable switch to touch part 22.Movable switch touches part 22B and is arranged to have four stable angle switch positions (touch part 22B by static switch and define,, such as described later), higher touches part limit wing 22C and corresponding static switch touches part 20A and 20B aligns.

In each position in four position of the switch, the lower stationary switch touches that part 20A touches the suitable limit wing 22B of part 22 with movable switch or 22C is electric contacts.On the position of the switch shown in Fig. 9 A to 9C, suitable one of also touching among the part 20B with the static switch in top of the higher limit wing 22C that movable switch touches part 22 becomes electric the contact, causes the lower stationary switch to touch part 20A thus and touches part 20B with the static switch in top selectively and become to be electrically connected.In the position of the switch shown in Fig. 9 D, the static switch that movable switch touches the higher limit wing 22C of part 22 and bottom touches part 20A and aligns, but does not align with static any one that touch among the part 20B in top, causes the closed condition of rotary stepping switch 10 whereby.

Shown in Fig. 1 and 7, the lower end of rotor 23 is divided into four segments 26, and these segments strengthen on the both direction radially outward reaching axially downwards.One by Fig. 1 on the angle direction shown in the arrow X, each segment expands gradually radially outward and axially passing through on the both direction downwards.This shaping surface or surperficial die mould have formed first ring and second ring that four continuous asymmetric teeth 28 that axially extended by the lower end edge from rotor 23 form that outward extending four the continuous asymmetric teeth 27 of peripheral radial by the son 23 that rotates form downwards.Each asymmetric tooth 27 and 28 shorter side are positioned on the imaginary plane by the axis of rotor 23.

Driving mechanism 19 comprises a reciprocating driving-disc 30 on angle, and this driving-disc has a medium pore 30A, and axle 15 passes this hole rotates dish thereon so that supporting driving-disc.Driving-disc 30 has the upright collar 31 of the central authorities around hole 30A.The collar 31 is divided into four same fan-shaped section, each fan-shaped section passes through on the angle direction shown in the arrow Y in by Fig. 1 and upwards tilts gradually, whereby, just be formed with a ring that forms by four upwardly extending vertically continuous asymmetric teeth 32 around the top of the collar 31.The shorter side of each asymmetric tooth 32 is positioned at the imaginary plane by the axis of the collar 31.

Tooth 28 has identical asymmetric triangular profile with tooth 32, they point to corresponding rightabout X and Y like this, make them complementary mutually, and mutual secure engagement when tooth 32 rotates with respect to tooth 28 on the Y direction, and side is not meshing with each other or is in relaxed state when tooth 32 rotates on directions X.

Driving-disc 30 is pushed dividing plate 14 to from dividing plate 14 belows vertically by a helical spring 33, this helical spring be arranged on the axle 15 on and with its opposite two ends acting in conjunction between the diapire 13A of driving-disc 30 and lower casing portion 13.The collar 31 of driving-disc 30 passes the hole 16 of dividing plate 14 and meshes under the situation of interlock mutually at corresponding ring that collar tooth 32 constitutes and rotor tooth 28 with rotor 23, thereby provides a kind of one-way clutch effect between rotor 23 and driving-disc 30.This structure makes the collar 30 always flexibly push rotor 23 to by helical spring 33.

Lower casing portion 13 has an opening on its sidewall 13B, the form of this opening is the screw thread stay pipe 34 that extends laterally of an integral body, the effect of this pipe 34 is that ((not shown) cooperates, and in the mode known to common in the prior art rotary stepping switch 10 that assembles is bearing on the wall of an electric equipment (not shown) with a screw thread copper nut.

Driving-disc 30 has a segment that radially swells 36 on 90 °, described segment 36 has relative circumferential end limit 36A and 36B.Article one, pearl string or pelletron 37 enter in the switch shell 11 by stay pipe 34, and the inner of removing the pearl string is fixed on the near-end limit 36B of segment 36 by the mode that is engaged in integral tubular bearing 38 scopes of dangling from the end limit 36B of segment.

Helical spring 33 has last radial leg 33A and following radial leg 33B, and last leg 33A radially outwards refers to so that mesh bearing 38 (not shown), and leg 33B radially inwardly refers to so that be engaged in the vertical line of rabbet joint 15B scope that forms on axle 15 down.Helical spring 33 pressurizes in advance so that push driving-disc 30 to an angle stop place on the arrow directions X shown in Fig. 1, and on this position, segment end limit 36A is reclining with the solid strut 40 that uprightly comes out from the diapire 13A of lower house 13.

When operation, pulling pelletron 37 is so that overcome moment of torsion bias effect rotating drive dish 30 on driving direction Y of helical spring 33.When segment end limit 36B ran into just in time the lower house sidewall 13B in stay pipe 34 back, driving-disc 30 can be stopped eventually.At this moment, driving-disc 30 has been rotated and has been a bit larger tham 90 °, and rotor 23 also is so, and rotor 23 is by being meshing with each other on driving direction Y and 30 one-tenth driven engagements of driving-disc between tooth 28 and 32.

The rotation of rotor 23 on direction Y can not be subjected to three static switches in top to touch the obstruction of part 20B, and these switches touch part and just slip over corresponding tooth 27.At the end of the pulling action of pelletron 37, rotor 23 and also have movable switch to touch part 22 to have rotated about 90 ° and arrive the next position of the switch.

In case loosen pelletron 37, driving-disc 30 is rotating back into its stop place on direction X under the effect of helical spring 33.The engagement of rotor 23 by the relatively pine between the tooth 28 and 32 of correspondence by driving-disc 30 make its on direction X originally a little the back change a bit, but the short side of touching the corresponding next tooth 27 on the periphery of part 20B and rotor 23 when the static switch in top will stop when tightly meshing very soon, defines a stable angle switch position for movable switch touches part 22 whereby.This can cause touching single direction ratchet of appearance or stopping function between part 20B and the rotor tooth 27 at the static switch in top.

Because the rotary driving force of helical spring 33 is more much better than than the engaging force between tooth 28 and 32, driving-disc 30 will continue to be turned back to the stop place, and corresponding tooth 28 breaks away from engagement and rotation and passes through corresponding tooth 28 on the rotor 23 on its tooth 32 and the rotor 23.In case be turned back to its stop place, driving-disc 30 has just rotated backward about 90 °, and its tooth 32 is meshed with the tooth 28 of rotor 23, but at a tooth place of back (90 °).Rotary stepping switch 10 just is ready to and can have carried out step-by-step operation next time like this.

Referring to Fig. 8, the figure shows on off state again, in this state, movable switch touches touching part 20B than flash wing 22C and the 2nd the static switch in top and becoming electric and contact of part 22.In this state, the 1st two tips of touching part 20B with the static switch in the 3rd top relative both sides just in time movable switch touch part 22 corresponding than minor face wing 22B above, and close with it, between them, be formed with corresponding little clearance G (Figure 10 B).

Now referring to Figure 10 B.Though the lower stationary switch touches part 20A, also have movable switch to touch part 22, therefore also have at the described short part limit wing 22B that touches on the opposite side and be under the voltage status, if but do not have ring-shaped rotor rib 23B (rotor 23 '), then accidental spark, electric arc or the arcing meeting that occurs would be skipped from described and short touched part limit wing 22B to the No. 1 and No. 3 static switch in each top touches clearance G between the tip of aligning of part 20B.Shown in Figure 10 A, rotor rib 23B is arranged in the clearance G, its effect be lengthening at the clearance G place along the vertical-path (leakage path) on the surface of rotor 23, avoid whereby or reduce at least touching the possibility that occurs undesirable like this spark, electric arc or arcing between part 20 and 22 at the adjacent switch of being forbidden to have electric contact.

This surface elongation that provides by rotor rib 23B can obtain in any other mode, for example uses a ring-shaped groove that forms around this periphery on the periphery of rotor 23 to replace rotor rib 23B.

The utility model only is described by way of example, but also can make various other changes and/or modification to described embodiment under the situation of this professional those of ordinary skill scope of the present utility model described in detail in not breaking away from the appended claim book.

Claims (8)

1. rotary stepping switch, it comprises a shell, supporting is in the enclosure around the rotor of a rotational, a plurality of shell scope static switches that son distributes that rotate that are positioned at touch part, one is contained in epitrochanterian movable switch and touches part, a reciprocating actuator on angle, it is supported in the enclosure does angular movement around this axis, so that rotary rotor on driving direction, thereby making movable switch touch part is moved into and touches with static switch that one or more the work electricly contacts or break away from electric contact in the part, be arranged on and be used for to make actuator one stepping angle to be driven the one-way clutch apparatus that passes to rotor between actuator and the rotor, with the unidirectional retaining device that is provided with in the enclosure, this unidirectional retaining device comprises first and second parts that mesh as mutually, so that actuator with the reverse non-driving direction of driving direction on revolution the time rotor is stopped not rotate, it is characterized in that: described rotor has the surface apparatus that extends along its periphery so that extend the surperficial path between relative rotor tip on it.

2. rotary stepping switch as claimed in claim 1 is characterized in that: surface apparatus is projection.

3. rotary stepping switch as claimed in claim 2 is characterized in that: surface apparatus is provided by an integrally formed rib.

4. rotary stepping switch as claimed in claim 1 is characterized in that: movable switch touches part around described another rotor tip setting, and its part extends on the described rotor tip.

5. rotary stepping switch as claimed in claim 4 is characterized in that: the position that the described part that surface apparatus touches part at movable switch is traversed it disconnects.

6. rotary stepping switch as claimed in claim 4, it is characterized in that: static switch one of touches in the part and to be arranged on described another rotor tip and to touch with movable switch that part is electric to be contacted, and another static switch touches some other parts that touch of part or and is arranged on and is used for electric contact of described part of touching part with movable switch out of the ordinary when rotor rotation on the described rotor tip.

7. rotary stepping switch as claimed in claim 1, it is characterized in that: movable switch touches part and has a middle body and a plurality of integral part that radially extends, these integral parts are converted into the right angle basically so that be placed on the same side of middle body, and whole movable switch touches part and closely is arranged on described another end of rotor.

8. rotary stepping switch as claimed in claim 7 is characterized in that: rotor has a plurality of grooves that movable switch touches the corresponding radially extension of part that are used to hold around its peripheral intervals ground

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