CN101989504B

CN101989504B - Driving shaft of electric switch

Info

Publication number: CN101989504B
Application number: CN 200910160862
Authority: CN
Inventors: 陈德州
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2009-07-29
Filing date: 2009-07-29
Publication date: 2013-03-20
Anticipated expiration: 2029-07-29
Also published as: DE102010032795B4; DE102010032795A1; CN101989504A

Abstract

The invention provides a driving shaft of an electric switch, which comprises a shaft body, a cam part arranged on one end of the shaft body and a spring, wherein the cam part is provided with a circumferential caulking groove perpendicular to the axis of the shaft body; the spring is sheathed in the circumferential caulking groove; the spring is provided with two ends extending out of the caulking groove; the extending positions of the two ends respectively correspond to the switching-off or switching-on position of the driving shaft; the spring can be a torsion spring or a clamp spring; the spring arranged on one end of the driving shaft can play a role of buffering when the electric switch is converted between the switching-off state and the switching-on state; and in addition, the spring can play a role of stabilizing the position of the driving shaft when the electric switch is in the switching-off or switching-on state.

Description

The driving shaft of electric switch

Technical field

The present invention relates to a kind of driving shaft of electric switch, specifically, relate to a kind of electric switch driving shaft that spring at one end is installed.

Background technology

Usually can use electric switch in the electric power system, thereby by making the electrical contact that matches separate interruptive current, realize protection system, load and user, avoid the purpose of electric fault and misoperation.Usually, separating with again closed of electrical contact all is to finish by means of suitable actuating unit.At present, the operation of the switching of electric switch mainly is that the dependence main spring is actuating force, driving shaft finally is pushed to closes a floodgate or open position, when operator's master cock combined floodgate and separating brake, can bear larger shock loading.

United States Patent (USP) discloses a kind of manual override control mechanism of electric switch for No. 5861784.This device has been installed a torsion spring between driven wheel and slide mechanism, these torsion spring two ends are all fixing, and its effect is that main spring and gear keep relative position stable, but this torsion spring is not installed on the driving shaft.

Summary of the invention

The present invention aims to provide a kind of driving shaft of electric switch, avoids the operator to be subject to excessive shock loading when separating brake or closing operation, increases operation comfort, and makes the position of driving shaft under separating brake or "on" position more stable and accurately put in place.

For achieving the above object, the invention provides a kind of driving shaft of electric switch, it comprises an axis body, cam portion and a spring that is positioned at axis body one end.Wherein, on the cam portion with one with circumferential caulking groove perpendicular to described axis body axis, described spring housing is located in this circumferential caulking groove, this spring has two ends of stretching out from caulking groove, the extended position of an end is corresponding with the open position of driving shaft, and the extended position of another end is corresponding with the closing position of driving shaft.

Open when changing between separating brake and "on" position when electric switch, the spring that is arranged at the driving shaft lower end can play cushioning effect, in addition, opens a sluice gate or during "on" position, this spring can also play the effect of stabilized driving shaft position when electric switch is in.

According to the driving shaft of another kind of electric switch of the present invention, wherein, two ends of spring all have the part of a bending.

According to the driving shaft of another electric switch of the present invention, its medi-spring is torsion spring.

According to the driving shaft of another electric switch of the present invention, its medi-spring also can be jump ring.

When the operator rotates the electric switch driving shaft from separating brake or closes a floodgate to combined floodgate or open position rotation, owing to be arranged on the effect of the spring of driveshaft end, slide block can be subject to the acting in conjunction of elastic force and the cam portion motive force of spring during drive shaft turns, promote slide block and leave initial separating brake or closing position, the so before this main spring work of electric switch, then be that spring of the present invention and cam are worked together, thereby improve operation comfort.And when driving shaft drives slide block movement to approaching combined floodgate or open position, the other end of spring contacts with slide block, what produce on the spring can alleviate the shock loading that acts on the driving shaft with slide block movement opposite direction elastic force, has improved equally the comfortableness of operation.

When being in separating brake or "on" position when electric switch, an end of the spring on the driving shaft is subjected to the promotion of slide block in addition, and driving shaft is reversed, and accurately reaches to close a floodgate or open position, and is stabilized on this position.

Description of drawings

The following drawings is only done the present invention and is schematically illustrated and explain, not delimit the scope of the invention, wherein:

Fig. 1 is the stereogram of a kind of electric switch driving shaft of the present invention;

Fig. 2 is the schematic diagram of a kind of spring in the electric switch driving shaft of the present invention;

Fig. 3 is the schematic diagram of the another kind of spring in the electric switch driving shaft of the present invention;

Fig. 4 is the schematic diagram that the driving shaft of a kind of electric switch of the present invention is in closing position;

Fig. 5 is the schematic diagram that the driving shaft of a kind of electric switch of the present invention is in open position.

Label declaration

10 driving shafts, 12 axis bodies, 14 cam portions, 16 caulking grooves

18 springs 182 close a floodgate and hold 184 separating brake ends

20 slide blocks

Embodiment

Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention, identical label represents same or analogous parts in each figure, and in the literary composition alleged as above, inferior position relation, the relative position relation that only refers to each parts shown in the accompanying drawing does not represent its absolute position.

As shown in Figure 1, driving shaft 10 has an axis body 12 and a cam portion 14 that is positioned at axis body 12 lower ends, on the cam portion 14 with one with perpendicular to axis body 12 and along the caulking groove 16 that cam portion 14 is circumferentially offered, be set in the spring 18 in the caulking groove 16.This spring 18 has two ends of stretching out from caulking groove 16, one is the combined floodgate end 182 corresponding with the closing position of driving shaft 10, and another is the separating brake end 184 corresponding with the open position of driving shaft 10.

Figure 2 shows that the schematic diagram of a kind of spring 18 in the driving shaft of the present invention, in the figure, spring 18 is a torsion spring, and this torsion spring has two ends, one is that the combined floodgate end 182, corresponding with the closing position of driving shaft is the separating brake end 184 corresponding with the open position of driving shaft.

Spring 18 not only can be torsion spring, also can be other forms of spring, be a jump ring in the spring 18 as shown in Figure 3, and this jump ring has two ends, one is that the combined floodgate end 182, corresponding with the closing position of driving shaft is the separating brake end 184 corresponding with the open position of driving shaft.

The driving shaft 10 that describes a kind of electric switch of the present invention in detail below in conjunction with Fig. 4 and Fig. 5 turns to the operating process of open position from closing position.

As shown in Figure 4, the driving shaft 10 of electric switch and a slide block 20 cooperate to be installed, and the cam portion 14 of driving shaft 10 1 ends places slide block 20.When electric switch was in closing position shown in Figure 4, combined floodgate end 182 and the slide block 20 of spring 18 kept in touch, and separating brake end 184 does not contact with slide block 20.And when electric switch was in as shown in Figure 5 open position, separating brake end 184 and the slide block 20 of spring 18 kept in touch, and the end 182 that closes a floodgate does not contact with slide block 20.

At closing position shown in Figure 4, slide block 20 is along the combined floodgate end 182 of downward direction pressuring spring 18 among Fig. 4, and spring 18 accumulation of energys have one along the elastic restoring force of upward direction among Fig. 4 on it.When the operating state of electric switch need to switch to gate-dividing state from "on" position, the operator was along direction of arrow rotating driveshaft 10 shown in Figure 4, and the cam portion 14 of driving shaft one end also rotates thereupon, and upwards and promote slide block 20 and move up.Elastic force on the spring combined floodgate end 182 is when slide block 20 moves upward, promoting driving shaft 10 separates with slide block 20, at this moment, driving shaft 10 can produce a very large power to slide block 20, the direction of the elastic restoring force of end 182 is consistent with slide block 20 directions of motion owing to close a floodgate, therefore the reaction force of 20 pairs of driving shafts 10 of spring 18 buffer sliding block has increased the comfort level that operates.

The operator handles driving shaft 10 and continues to rotate along the direction shown in the arrow among Fig. 4, the end 182 that closes a floodgate disengages fully with slide block 20, and the accumulation of energy of spring 18 obtains discharging, and slide block 20 is under the promotion of cam portion 14, move rapidly, make electric switch enter gate-dividing state shown in Figure 5.During electric switch entered gate-dividing state, separating brake end 184 and the slide block 20 of spring 18 came in contact.Because the effect of the elastic force of spring 18, separating brake end 184 is when contacting with slide block 20, can produce the active force along downward direction among Fig. 5 to slide block 20, avoided driving shaft 10 when entering gate-dividing state, because of the strength that moves upward of slide block 20 excessive, it is excessive and make the operator bear excessive impulsive force to make it act on power on the driving shaft 10, has increased the comfort level of operation.

Above-mentioned explanation, the driving shaft 10 of having described a kind of electric switch of the present invention moves to the detailed process of open position from closing position.If instead demand motive axle 10 turns to closing position shown in Figure 4 from open position shown in Figure 5 along the direction shown in the arrow the figure, the concrete course of work is just in time with above-mentioned opposite to the process of separating brake from closing a floodgate, and does not repeat them here.

In addition, from Fig. 4 and spring 18 shown in Figure 5 and the relative position of slide block 20, can find out, when electric switch is in combined floodgate or open position, the combined floodgate end 182 of spring 18 or the elasticity of separating brake end 184 produce a power of separating with slide block 20, this is tried hard to recommend moving driving shaft 10 and is fixed on firmly on the position of separating brake or combined floodgate, avoids driving shaft 10 arbitrarily to depart from the service position.

In addition in a kind of driving shaft of the present invention, the combined floodgate end 182 of spring 18 and separating brake end 184 are all such as Fig. 2 or the part with a bending shown in Figure 3, when driving shaft 10 rotated, the combined floodgate end 182 of spring 18 and separating brake end 184 were with slide block 20 contacts or separate soft, smooth and easy like this.

From above-mentioned description as can be known, when the operator rotates electric switch driving shaft 10 from separating brake or closing position to closing a floodgate or open position when rotating, owing to be arranged on the effect of the spring 18 of driving shaft 10 ends, slide block 20 can be subject to the acting in conjunction of elastic force and cam portion 14 motive forces of spring 18 when driving shaft 10 rotated, when promotion slide block 20 leaves initial separating brake or closing position, spring 18 can bring the resistance that the operator slowly increases, and has improved the comfortableness of operation.Equally, when driving shaft 10 band movable sliders 20 move to combined floodgate or open position, the other end of spring 18 contacts with slip 20, and what produce on the spring 18 can alleviate the shock loading that acts on the driving shaft 10 with the opposite elastic force of slide block 20 directions of motion, has improved equally the comfortableness of operation.

When being in separating brake or "on" position when electric switch, the motive force of spring 18 acts on the driving shaft 10 in addition, driving shaft 10 is pressed on the slide block 20 of electric switch, has played the effect of stabilize drive shaft 10 separating brakes or closing position.

Above listed a series of detailed description only is specifying for feasibility embodiment of the present invention; they are not to limit protection scope of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention does and all should be included within protection scope of the present invention.

Claims

1. the driving shaft of an electric switch, this driving shaft comprises:

An axis body;

A cam portion that is positioned at axis body one end;

It is characterized in that,

On the described cam portion with one with circumferential caulking groove perpendicular to described axis body axis, be arranged with a spring in the described caulking groove, this spring has two ends of stretching out from described caulking groove, open position with described driving shaft of the extended position of these two ends is corresponding, and another closing position with described driving shaft is corresponding.

2. driving shaft as claimed in claim 1, two described ends of wherein said spring all have the part of a bending.

3. driving shaft as claimed in claim 1 or 2, wherein said spring is torsion spring.

4. driving shaft as claimed in claim 1 or 2, wherein said spring is jump ring.