CN102376500A - Safety insertion self-locking device of plug-in moulded case circuit breaker - Google Patents
Safety insertion self-locking device of plug-in moulded case circuit breaker Download PDFInfo
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- CN102376500A CN102376500A CN2010102639897A CN201010263989A CN102376500A CN 102376500 A CN102376500 A CN 102376500A CN 2010102639897 A CN2010102639897 A CN 2010102639897A CN 201010263989 A CN201010263989 A CN 201010263989A CN 102376500 A CN102376500 A CN 102376500A
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- support
- snap close
- locking device
- arm
- base
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Abstract
The invention discloses a safety insertion self-locking device of a plug-in moulded case circuit breaker, which comprises a circuit breaker body, a base, a limiting part, a support, a lock catch and a spring, wherein the circuit breaker body is provided with an operating mechanism and comprises a connecting rod capable of rotating around a rotating shaft; a limiting step is arranged in the base; the limiting part is rotatablely arranged on a stationary shaft; the limiting part is provided with a connecting arm and a limiting arm; the connecting arm is provided with a waist-shaped hole; a universal driving shaft penetrates into the waist-shaped hole and is connected with one end of the connecting rod; the support is fixed at the bottom part of the circuit breaker body; the support is provided with a check block; the middle part of the lock catch is rotatablely arranged on the support; the upper end of the lock catch extends near the connecting rod and the limiting arm; the lower end of the lock catch is provided with a hook part matched with the limiting step of the base; the lock catch is also provided with a boss matched with the check block of the support; and the spring is connected between the lock catch and the support, so that the boss on the lock catch is abutted with the check block of the support. The safety insertion self-locking device of the plug-in moulded case circuit breaker has higher safety, a small number of parts and simplicity in assembling.
Description
Technical field
The present invention relates to breaker of plastic casing, particularly the safety plug self-locking structure of plug-in type breaker of plastic casing.
Background technology
In order to guarantee operator's safety, relevant criterion has stipulated that clearly the plug-in type breaker of plastic casing that manufactory produces does not allow to connect in the process of inserting and extracting operation.In order to realize this regulation, the plug-in type breaker of plastic casing has two kinds of implementations, mode one in the industry: allow under the on-state to carry out and insert and extract operation, but breaker of plastic casing can automatic brake separating in the operating process, like the NSX series of Schneider company etc.; Mode two: do not allow under the on-state carry out to insert and extract operation, only under gate-dividing state, could carry out insertion and extract operation, like the Tmax series of ABB AB etc.With regard to dual mode relatively, mode two is safer than mode one, because operation can inserted and extract to mode two must just after carrying out sub-switching operation.Though the Tmax series of products of ABB AB can be realized safety plug self-locking, part is many, and assembling is complicated, and cost is higher.
Summary of the invention
The technical problem that the present invention will solve provides a kind of simple in structure, safe and reliable plug-in type breaker of plastic casing safety plug self-locking device, to overcome the above-mentioned defective of prior art.
In order to solve the problems of the technologies described above; The present invention adopts following technical scheme: a kind of safety plug self-locking device of plug-in type breaker of plastic casing; Comprise with lower component: breaker body, breaker body is provided with operating mechanism, and said operating mechanism comprises a connecting rod that can rotate around the axis; Base is provided with a limited step in the base; Locating part is installed in rotation on the fixed axis, and said locating part has a linking arm and a position limit arm, and said linking arm is provided with a mounting hole, and a universal driving shaft is located in the said mounting hole and with an end of said connecting rod and is connected; Support is fixed on the bottom of said breaker body, and said support is provided with a block; Snap close; The middle part of snap close is installed in rotation on the said support; The upper end of snap close extend to said connecting rod and position limit arm near, the lower end of snap close is provided with a hook portion and matches with the limited step of base, also is provided with the boss that matches with the block of said support on the snap close; Spring is connected between snap close and the support, and the boss on the said snap close is resisted against on the block of said support.
Preferably, said snap close is installed on the said support through a connecting axle, and said connecting axle is provided with a plurality of cannelures, and the back-up ring that is used for axial limiting is installed in the cannelure.
Preferably, said support passes through screw on the base plate of breaker body.
Preferably, respectively be provided with a spring carrier arm on said snap close and the support, said spring is an extension spring, and the two ends of extension spring are connected on the said spring carrier arm.
Further, said snap close is provided with a side arm, and said side arm is stretched from the relative epitaxial lateral overgrowth of said boss, and side arm is provided with a circular hole and matches with said connecting axle.
Preferably, the upper end of said snap close has a bend, and the two ends of bend are respectively equipped with arc surface.
Preferably, the end of said position limit arm is provided with arc surface.
Preferably, the end face of said limited step is the inclined-plane, and the bottom surface of limited step is parallel with the bottom surface of said base.
With technological compared with techniques, the present invention has following beneficial effect: only after executing the separating brake action, just can insert and extract operation, fail safe is higher; Number of parts is few, and assembling is simple.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 be the present invention when operating mechanism is in "on" position (on-state), breaker body can not insert the sketch map of base.
Fig. 2 be the present invention when on-state, the sketch map that breaker body can not be extracted from base.
Fig. 3 be the present invention when the disjunction state, breaker body can insert the sketch map of base.
Fig. 4 be the present invention when the disjunction state, the sketch map that breaker body can be extracted from base.
Fig. 5 is the assembly relation sketch map of snap close and support.
Fig. 6 is the structural representation of support.
Fig. 7 is the structural representation of connecting axle.
Fig. 8 is the structural representation of snap close.
Fig. 9 is the structural representation of locating part.
Embodiment
As shown in Figure 1, the safety plug self-locking device of a kind of plug-in type breaker of plastic casing of the present invention comprises with lower component:
A breaker body 20 which is provided with the operating mechanism 30 that is used to operate moving contact, makes closing of power circuit breaker or disjunction.Operating mechanism 30 comprises a connecting rod 9 of 11 rotations around the shaft.
A base 10 is provided with a limited step 102 in the base 10, the end face 101 of limited step is the inclined-plane, and bottom surface 103 (see figure 2)s of limited step are then parallel with the bottom surface of base 10.
A locating part 2, locating part 2 are installed in rotation on the fixed axis 1.The structure of locating part 2 is as shown in Figure 9, and it has a linking arm 204 and a position limit arm 205, and linking arm 204 is provided with a mounting hole 201, and the end of position limit arm 205 is provided with arc surface 203.In conjunction with Fig. 1, wear a universal driving shaft 12 in the mounting hole 201 of linking arm 204, universal driving shaft 12 is connected with an end of connecting rod 9, and 202 of the circular holes on the locating part 2 are used to wear fixed axis 1.
A support 4 is fixed on the base plate of breaker body 20 through two screws 3.The structure of support 4 is as shown in Figure 6, which is provided with two screw holes 403,404, is used to wear screw 3.Also be provided with a circular hole 401, a spring carrier arm 402 and a block 405 on the support 4.
A snap close 5, the middle part of snap close 5 is installed in rotation on the support 4 through a connecting axle 6, and the upper end of snap close 5 extends near the position limit arm of connecting rod 9 and locating part 2, and under this state, locating part 2 can stop the rotation of snap close 5.The structure of snap close 5 is as shown in Figure 8; Its upper end has a bend 508, and the two ends of bend 508 are respectively equipped with arc surface 505 and 506, and the lower end of snap close is provided with a hook portion 502; A boss 503 and a side arm 507 are extended to both sides respectively in the middle part of snap close; Side arm 507 is provided with a circular hole 501, in addition, also is provided with a spring carrier arm 504 on the snap close 5.
A spring 8 is connected between snap close 5 and the support 4.
In conjunction with reference to Fig. 5-Fig. 8, when snap close 5 is installed in 4 last times of support, connecting axle 6 is located in the circular hole 401,501.Connecting axle 6 is provided with a plurality of cannelures 601, and back-up ring 7 is stuck in these cannelures 601, is used for connecting axle 6 is carried out axial limiting.Obviously, this is not unique version, such as, those skilled in the art can expect at an easy rate, adopts the multidiameter end to add back-up ring or nut, also can realize the installation of snap close.The two ends of spring 8 are connected on the spring carrier arm 402 of spring carrier arm 504 and support 4 of snap close 5, so that the boss 503 on the snap close is resisted against on the block 405 of support.Spring 8 is an extension spring here; But those skilled in the art also can replace with a torsion spring with extension spring 8 at an easy rate, and on connecting axle 6, an end of torsion spring withstands on the support 4 with torsion spring set; The other end withstands on the snap close 5, and the boss 503 on the snap close is resisted against on the block 405 of support.
Describe in the face of operation principle of the present invention down.
At first with reference to Fig. 1, under illustrated state, breaker body 20 separates with base 10, and operating mechanism is in "on" position.At this moment, if breaker body 20 is inserted in the base 10, then the hook portion 502 of snap close can be run into the limited step 102 in the base; Inclined-plane 101 can apply an anticlockwise torque to snap close 5; Make snap close 5 have the trend that rotates counterclockwise around connecting axle 6, but, stop snap close 5 to rotate counterclockwise because boss 503 on the snap close and the block 405 on the support contradict each other; Thereby make snap close 5 receive stopping of limited step 102 and can't insert in the base 10, guarantee operator's safety.
Refer again to Fig. 2, under illustrated state, breaker body 20 is to be inserted in the base 10, and operating mechanism 30 is in "on" position.At this moment; If breaker body 20 is extracted from base 10, then the hook portion 502 of snap close can be run into the bottom surface 103 of limited step, and bottom surface 103 can apply a clockwise torque to snap close; Snap close is clockwise rotated around connecting axle 6; But snap close is as long as rotate a very little angle, and the arc surface 505 of snap close upper end will be run into the arc surface 203 on the locating part, can't continue to clockwise rotate; Thereby the hook portion 502 that makes snap close receives stopping of limited step bottom surface 103 and can't from base 10, extract, and guarantees operator's safety.
With reference to Fig. 3, under illustrated state, breaker body 20 separates with base 10, and operating mechanism is in the disjunction state.Under the disjunction state; The universal driving shaft 12 that links to each other with connecting rod 9 slides into locating part mounting hole 201 bottom; Promote locating part 2 and rotate counterclockwise certain angle (with respect to "on" position); Make the bend 508 of the position limit arm 205 of locating part, make locating part 2 no longer cause obstruction the rotation of snap close 5 away from the snap close upper end; On the other hand, the end face of connecting rod 9 contacts with arc surface 506 on the snap close 5, promotes snap close 5 and has clockwise rotated certain angle (with respect to "on" position).At this moment, if breaker body 20 is inserted in the base 10, because the change of snap close 5 angles own, the hook portion 502 of snap close just in time can be avoided limited step 102, and therefore, breaker body 20 can successfully insert in the base 10.
With reference to Fig. 4, under illustrated state, breaker body 20 is to be inserted in the base 10, and operating mechanism is in the disjunction state."on" position with respect to Fig. 1, Fig. 2; Under the disjunction state of Fig. 3, Fig. 4; The position limit arm 205 of locating part is away from the bend 508 of snap close 5 upper ends; Make locating part 2 no longer cause obstruction to the rotation of snap close 5, snap close 5 has clockwise rotated certain angle under the promotion of connecting rod 9, makes the hook portion 502 of snap close lower end just in time avoid limited step 102.At this moment, if breaker body 20 is extracted from base 10, then snap close 5 can not hindered, thereby breaker body 20 can successfully be extracted from base 10.
So, the present invention increases several parts seldom again through a very simple structure except that breaker body and base, just can guarantee that the plug-in type breaker of plastic casing only just can insert and extract operation behind sub-switching operation, guarantees handling safety.
Claims (8)
1. the safety plug self-locking device of a plug-in type breaker of plastic casing is characterized in that, comprises with lower component:
Breaker body (20), breaker body are provided with operating mechanism (30), and said operating mechanism (30) comprises a connecting rod (9) of (11) rotation around the shaft;
Base (10) is provided with a limited step (102) in the base;
Locating part (2); Be installed in rotation on the fixed axis (1); Said locating part (2) has a linking arm (204) and a position limit arm (205); Said linking arm (204) is provided with a mounting hole (201), and a universal driving shaft (12) is located in the said mounting hole (201) and with an end of said connecting rod (9) and is connected;
Support (4) is fixed on the bottom of said breaker body (20), and said support (4) is provided with a block (405);
Snap close (5); The middle part of snap close is installed in rotation on the said support (4); The upper end of snap close (5) extend to said connecting rod (9) and position limit arm (205) near; The lower end of snap close (5) is provided with a hook portion (502) and matches with the limited step (102) of base, also is provided with the boss (503) that matches with the block (405) of said support on the snap close (5);
Spring (8) is connected between snap close (5) and the support (4), and the boss (503) on the said snap close is resisted against on the block (405) of said support.
2. safety plug self-locking device according to claim 1; It is characterized in that; Said snap close (5) is installed on the said support (4) through a connecting axle (6), and said connecting axle (6) is provided with a plurality of cannelures (601), and the back-up ring (7) that is used for axial limiting is installed in the cannelure (601).
3. safety plug self-locking device according to claim 1 is characterized in that said support (4) is fixed on the base plate of breaker body (20) through screw (3).
4. safety plug self-locking device according to claim 1 is characterized in that, respectively is provided with a spring carrier arm (504 on said snap close (5) and the support (4); 402); Said spring (8) is an extension spring, and the two ends of extension spring are connected on the said spring carrier arm (504,402).
5. safety plug self-locking device according to claim 2; It is characterized in that; Said snap close (5) is provided with a side arm (507), and said side arm (507) is stretched from the relative epitaxial lateral overgrowth of said boss (503), and side arm (507) is provided with a circular hole (501) and matches with said connecting axle (6).
6. safety plug self-locking device according to claim 1 is characterized in that the upper end of said snap close (5) has a bend (508), and the two ends of bend (508) are respectively equipped with arc surface (505,506).
7. safety plug self-locking device according to claim 1 is characterized in that the end of said position limit arm (205) is provided with arc surface (203).
8. safety plug self-locking device according to claim 1 is characterized in that the end face (101) of said limited step (102) is the inclined-plane, and the bottom surface of limited step (103) are parallel with the bottom surface of said base (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010263989.7A CN102376500B (en) | 2010-08-24 | 2010-08-24 | Safety insertion self-locking device of plug-in moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010263989.7A CN102376500B (en) | 2010-08-24 | 2010-08-24 | Safety insertion self-locking device of plug-in moulded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376500A true CN102376500A (en) | 2012-03-14 |
| CN102376500B CN102376500B (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010263989.7A Active CN102376500B (en) | 2010-08-24 | 2010-08-24 | Safety insertion self-locking device of plug-in moulded case circuit breaker |
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| Country | Link |
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| CN (1) | CN102376500B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190167A (en) * | 2023-05-04 | 2023-05-30 | 深圳市脉联电子有限公司 | Electric shock prevention structure and circuit breaker thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805294A (en) * | 1955-12-09 | 1957-09-03 | Lota T E Circuit Breaker Compa | Mounting block for circuit breaker |
| CN1077818A (en) * | 1992-04-23 | 1993-10-27 | 梅兰日兰公司 | Draw-out molded case circuit breaker |
| CN200953291Y (en) * | 2006-09-12 | 2007-09-26 | 上海电器股份有限公司人民电器厂 | Interlocking device for draw type plastic case circuit breaker |
-
2010
- 2010-08-24 CN CN201010263989.7A patent/CN102376500B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805294A (en) * | 1955-12-09 | 1957-09-03 | Lota T E Circuit Breaker Compa | Mounting block for circuit breaker |
| CN1077818A (en) * | 1992-04-23 | 1993-10-27 | 梅兰日兰公司 | Draw-out molded case circuit breaker |
| CN200953291Y (en) * | 2006-09-12 | 2007-09-26 | 上海电器股份有限公司人民电器厂 | Interlocking device for draw type plastic case circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190167A (en) * | 2023-05-04 | 2023-05-30 | 深圳市脉联电子有限公司 | Electric shock prevention structure and circuit breaker thereof |
| CN116190167B (en) * | 2023-05-04 | 2023-07-07 | 深圳市脉联电子有限公司 | Electric shock prevention structure and circuit breaker thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102376500B (en) | 2014-05-14 |
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