CN101989504A

CN101989504A - Driving shaft of electric switch

Info

Publication number: CN101989504A
Application number: CN200910160862XA
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: 2011-03-23
Anticipated expiration: 2029-07-29
Also published as: CN101989504B; DE102010032795B4; DE102010032795A1

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, realize protection system, load and user, avoid the purpose of electric fault and misoperation by making the electrical contact that matches separate interruptive current.Usually, separating with closed again of electrical contact all is to finish by means of suitable actuating unit.At present, the operation of the folding lock of electric switch mainly is that the dependence main spring is an actuating force, driving shaft finally is pushed to closes a floodgate or the separating brake position, when operator's master cock combined floodgate and separating brake, can bear bigger 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 subjected 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 stable more 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, a cam portion and a spring that is positioned at axis body one end.Wherein, have on the cam portion 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 separating brake 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 a torsion spring.

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

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

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 the separating brake 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 the separating brake 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 is represented 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 is not represented 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, have on the cam portion 14 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 and the corresponding combined floodgate end 182 of the closing position of driving shaft 10, and another is and the corresponding separating brake end 184 in the separating brake 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 to be and the corresponding separating brake end 184 in the separating brake position of driving shaft with 182, one at the corresponding combined floodgate end of the closing position of driving shaft.

Spring 18 not only can be a 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 to be and the corresponding separating brake end 184 in the separating brake position of driving shaft with 182, one at the corresponding combined floodgate end of the closing 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 separating brake 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, the 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 separating brake position, the 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, spring 18 accumulation of energys, on it tool capable one along among Fig. 4 upward to elastic restoring force.When the operating state of electric switch need be when "on" position switches to gate-dividing state, the operator is 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 big 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 of operating.

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, the 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 a active force to slide block 20 along downward direction among Fig. 5, 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 separating brake position from closing position.If instead need driving shaft 10 to turn to closing position shown in Figure 4 from separating brake position shown in Figure 5 along the direction shown in the arrow the figure, the concrete course of work is just in time opposite with above-mentioned process from the separating brake that closes a floodgate, and does not repeat them here.

In addition, from Fig. 4 and the spring 18 shown in Figure 5 and the relative position of slide block 20, as can be seen, when electric switch is in combined floodgate or separating brake 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 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 rotate electric switch driving shaft 10 from separating brake or closing position to closing a floodgate or during the separating brake rotated position, owing to be arranged on the effect of the spring 18 of driving shaft 10 ends, slide block 20 can be subjected to the acting in conjunction of the 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 drive slide blocks 20 move to combined floodgate or separating brake position, the other end of spring 18 contacts with slip 20, and what produced 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 the comfortableness of operation equally.

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 at feasibility embodiment of the present invention; they are not in order to restriction protection scope of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention done 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,

Have on the described cam portion 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, separating brake 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 are torsion spring.

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