CN1048577C - Device for fastening affix in circuit breaker - Google Patents

Abstract

The present invention relates to a device for fastening a built-in affix in a circuit breaker. In order to easily carry out position adjustment when a built-in affix, such as a pressure loss and tripping device, etc., is arranged on a main body of a breaker, an intermediate cushion block 23 is embedded across the side wall 2 of a main body cover 1 and an assembling part 6a inserted into a base 6 of an assembling window 3 when the built-in affix 5 is arranged on the main body cover 1 of the breaker, and the intermediate cushion block 23 is used as an intermediate body to position the built-in affix 5 on the main body cover 1. Therefore, the position relationship of the built-in affix 5 relative to the main body cover 1 can be changed by only replacing the intermediate block 23. Compared with the structure that the built-in affix is directly embedded in the main body cover in the past, position adjustment becomes very simple.

Description

The erecting device of the built-in accessories of circuit-breaker

The present invention relates to distribution with circuit-breakers such as circuit breaker, residual current circuit breaker in order to built-in accessories are installed to the device on the circuit-breaker main body cover.

In the circuit breaker that distribution etc. uses, its inside is equipped with following annex: detect the on off state of main circuit auxiliary contact, detect the alarm contact that whether trips, make the no-voltage trip device of circuit breaker trip, the voltage trip device of remote operation circuit breaker etc. behind the brownout that predicts main circuit.These built-in accessories normally by a part of setting-in of its pedestal (shell of the member of built-in accessories is housed) is located to the breaker body shell, are pushed down and are fixed with the body cover that covers on the main body cover.

Fig. 2 and Fig. 3 illustrate this built-in accessories (at this moment being the no-voltage trip device) that are inlaid on the breaker body shell, and Fig. 2 is a plane graph, and Fig. 3 is its longitudinal section.In Fig. 2, on the limit wall 2 (Fig. 2) of the main body cover 1 of circuit breaker, from figure the face of the body cover combination of not drawing, open a square assembling window 3, the cross section is that square rectangular groove 4 is opened in before and after it on (Fig. 2 about) relative wall 3a.

On the one hand, outstanding forwards, backwards with the raised line 6a that above-mentioned rectangular groove 4 is chimeric, be arranged on the side of base 6 of no-voltage trip device 5 with being integral.Therefore, no-voltage trip device 5 is positioned on the main body cover 1 by raised line 6a is embedded in the rectangular groove 4 as shown like that, with body cover be pressed in raised line 6a above fixed.

Carry out briefly bright at this according to Fig. 3 to the internal structure of no-voltage trip device 5 and the work of triping.Secured core 8 and movable core 9 relatively are arranged on the center of the コ font yoke 7 that is fixed on the pedestal 6, and solenoid 10 and permanent magnet 11 are arranged on its outside.Joystick 12 connects yoke 7 and secured core 8 is fixed on the movable core 9, and back-moving spring 13 (Fig. 2) folder that is made of compression helical spring is inserted between the end 12a and yoke 7 of this joystick 12.

Separate Button Handle 14 and the handle 15 that resets is bearing in the upper and lower of pedestal 6 one ends freely by pivot 16 and 17 is rotatable respectively, the spring 18 of triping that is made of extension spring hangs over to be separated between Button Handle 14 and the yoke 7.Separating Button Handle 14 has three arm 14a, 14b, 14c, and arm 14a is relative with the end 12a of joystick 12, and arm 14b is relative with the tripping operation transverse arm 19 of a release gear part that constitutes circuit breaker.The handle 15 that resets has and the relative arm 15a of tripping operation transverse arm 19, is being connected from pivot 17 certain Dian Chu and the arm 14c that separates Button Handle 14 with connecting rod 20.

The main circuit voltage of circuit breaker is added on the solenoid 10 of above-mentioned such no-voltage trip device 5 at ordinary times, and movable core 9 is adsorbed on the secured core 8 by both magnetic fluxs of solenoid 10 and permanent magnet 11.So, be pressed in movable core 9 all-in-one-piece joysticks 12 on the Button Handle 14 of separating be held in illustrated position against trying hard to keep of trip spring 18, also remain on illustrated position with the handle 15 that resets of handlebar 14 interlocks by connecting rod 20.

Now, circuit breaker is in on-state, and in a single day main circuit voltage be lower than setting, and the magnetic flux of solenoid 10 reduces, and the attraction of movable core 9 has not been resisted the power of triping from trip spring 18, and movable core 9 is drawn back from secured core 8.Simultaneously, separate Button Handle 14, meanwhile, knock tripping operation transverse arm 19, its left direction in figure is moved with arm 14b with power clockwise direction driving in figure of trip spring 18.

At this moment, in a single day tripping operation transverse arm 19 arrives position shown in dotted lines in Figure 3, and the locking of release gear is thrown off moment in this, and travelling contact 21 is illustrated the on off mechanism of not drawing and drives, and disconnects in the moment of the open position shown in the point of arrival line.Here, the on off mechanism that drives travelling contact 21 is to constitute like this, and promptly it also acts on tripping operation transverse arm 19, and finally moves it the position shown in the chain-dotted line among the figure.As a result, bear the power that the tripping operation transverse arm 19 of the power of separating Button Handle 14 bears on off mechanism specifically at first, the reset arm 15a of handle 15 of collision rotates its counter-clockwise direction in figure.Accompany therewith, separate Button Handle 14 and also rotate to counter-clockwise direction against the power of trip spring 18, because arm 14a and joystick 12 leave, movable core 9 contacts with secured core 8 once more by the power of back-moving spring 13.

Subsequently, the release gear of circuit breaker is reset by the break-make handle of not drawing in the application drawing after (locking again), tripping operation transverse arm 19 resets to solid line position among the figure, movable core 9 bears the power of trip spring 18 once more by joystick 12, as main circuit voltage recovery at this moment, then keep being adsorbed on the secured core 8 always.That is to say that illustrated no-voltage trip device 5 automatically resets by on off mechanism after the tripping operation action.

Yet, as mentioned above, in the mounting structure of in the past built-in accessories, be that a part with base 6 directly embeds main body cover 1 and locatees, position relation between built-in accessories and the breaker body structure division, specifically, if for example built-in accessories are the such no-voltage trip devices 5 of diagram, then its arm 14b and gap A between the tripping operation transverse arm 19 that separates Button Handle 14 will be in the dimensional tolerance of regulation.

But,, in order to ensure the precision of above-mentioned position relation, just must select the combination of breaker body and built-in accessories and carry out various variations tests, so the efficient of assembling work reduces greatly because that each size of breaker body, each annex exists is discrete.

That is to say, excessive as above-mentioned gap A, when tripping operation action takes place, will trip by the rotation of separating Button Handle 14 before transverse arm 19 moves to the position that the locking that makes release gear throws off at arm 14b, arm 15a contacts with the transverse arm 19 that trips from opposite direction.As a result, make tripping operation transverse arm 19 be locked in this position, the tripping operation action has just stopped midway.A is too small as the gap, its result makes the arm 15a of the handle 15 that resets shown in Figure 3 and the gap B between the tripping operation transverse arm 19 become big, after the locking of release gear is thrown off, move to its final position even bear the tripping operation transverse arm 19 of the power of on off mechanism, do not push down arm 15a fully yet, the result makes leaving gap between movable core 9 and the secured core 8, and main circuit voltage can not be finished resetting of no-voltage trip device 5 after recovering.

Therefore, the assembling device that the purpose of this invention is to provide the such circuit breaker built-in accessories of position relation between a kind of structure division that can adjust built-in accessories and breaker body simply.

For achieving the above object, the present invention is pedestal setting-in one intermediate washer across breaker body shell and built-in accessories, makes this intermediate washer as mediator, and above-mentioned built-in accessories are positioned on the aforementioned body shell.

In the present invention, not that pedestal with built-in accessories directly is assemblied on the breaker body shell and locatees, but, this intermediate washer is located as mediator across their setting-ins one intermediate washer.Therefore, as changing the installation site that intermediate washer just can change the relative breaker body shell of built-in accessories, compare with the combination that changes built-in accessories and breaker body, operation becomes very simple.

Below with reference to accompanying drawings, the present invention will be described in conjunction with the embodiments.

Fig. 1 is the perspective view of the major part of expression embodiments of the invention;

Fig. 2 is the plane graph of the major part of expression prior art example;

Fig. 3 is the sectional arrangement drawing of Fig. 2.

In Fig. 1 with in the prior art example, partly represent accordingly with prosign.

In Fig. 1, on the sidewall of breaker body shell 1, from figure on the combined face of the lid main body do not drawn (among the figure above) open an assembling window 3, the cross section is that square rectangular groove 4 is arranged on the wall 3a before and after it.At this moment the built-in accessories 5 that outward appearance is illustrated as box-shaped also are the no-voltage trip devices, with the 6a of department of assembly and the pedestal 6 formation one of no-voltage trip device of the cuboid of assembling window 3 tablings, above it and front-back to offer the cross section of matching with rectangular groove 4 be square rectangular groove 22.Here, the size of the 6a of department of assembly is to set like this, promptly inserts under the state of assembling window 3 at it, becomes with one side with the top of main body cover sidewall 2 above it, and (about among the figure) direction leaves very little gap (adjustment surplus) with assembling between the window 3 before and after it.The 23rd, across the middle cushion block with ester moulding of main body cover 1 and pedestal 6 setting-ins, leg 23a, 23b and the mid portion 23c of both sides are combined into a shape.

For the built-in accessories among the figure 5 are installed on the main body cover 1, the 6a of department of assembly of pedestal 6 will be injected in the assembling window 3 of main body cover 1, it is relative and in former and later two square grooves of forming, the mid portion 23c of cushion block 23 imbeds the horizontal component of the rectangular groove 22 among the figure in the middle of making that the leg 23a of middle cushion block 23 and 23b are injected rectangular groove 4 and rectangular groove 22 closely.Like this, just making built-in accessories 5 is the relative main body cover of mediator 1 location with middle cushion block 23.The body cover that 6a of department of assembly under this state and middle cushion block 23 promptly are coated on the main body cover 1 is subsequently pushed down and is fixed.

In such structure, as the width dimensions C of leg 23a of cushion block 23 is little in the middle of making, and makes the width dimensions D of leg 23b big, then the 6a of department of assembly in assembling window 3 in figure the solid arrow direction move.Otherwise, as make width dimensions C big, and width dimensions D is little, then the 6a of department of assembly in assembling window 3 in figure the dotted arrow direction move.That is to say,, can in the interstice coverage between assembling window 3 and the 6a of department of assembly, freely change built-in accessories 5 and concern with respect to the position of main body cover 1 at fore-and-aft direction by the cooperation (but the C+D value is certain) of width dimensions C, D.

Thereby, prepared the middle cushion block 23 of the above-mentioned cooperation of multiple change, as from wherein selecting suitable cushion block for use, just can in prescribed limit, adjust said gap A among Fig. 3 at an easy rate.At this moment big or small different as width C, D by the reversing of middle cushion block 23 front and back is used, can be used cushion block in the middle of same 23 as two kinds of different sizes.

It is situations of no-voltage trip device that built-in accessories 5 have been shown in illustrated embodiment, but the present invention can be applicable to various built-in accessories, and its position adjustment is not limited to fore-and-aft direction, can adjust too the front, rear, left and right direction.

As mentioned above, according to the present invention, by with middle cushion block as mediator, built-in accessories are positioned on the main body cover of circuit breaker, the position that cushion block just can be adjusted between the structure division of built-in accessories and breaker body in the middle of only changing concerns, the method that changes the cooperation of built-in accessories and breaker body with in the past heuristic is repeatedly compared, and installation time can shorten greatly.

Claims (1)

1, a kind of erecting device of built-in accessories of circuit-breaker, it is characterized in that above-mentioned built-in accessories being positioned on the aforementioned body shell as mediator with cushion block in the middle of this across the main body cover of circuit-breaker and the pedestal setting-in one middle cushion block of built-in accessories.

Images