CN202616152U - Operating mechanism of small circuit breaker - Google Patents
Operating mechanism of small circuit breaker Download PDFInfo
- Publication number
- CN202616152U CN202616152U CN 201220225189 CN201220225189U CN202616152U CN 202616152 U CN202616152 U CN 202616152U CN 201220225189 CN201220225189 CN 201220225189 CN 201220225189 U CN201220225189 U CN 201220225189U CN 202616152 U CN202616152 U CN 202616152U
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- Prior art keywords
- circuit breaker
- block
- miniature circuit
- operating mechanism
- drive plate
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Abstract
The utility model relates to the technical field of circuit breakers and specifically related to an operating mechanism of a small circuit breaker, comprising a handle, a connecting rod, a push rod, a stop block, a support member, a driving plate and a contact arm, as well as a handle shaft and a pivot which are respectively fixed on the inner side of the casing of the small circuit breaker; the handle is mounted on the handle shaft, and the driving plate, the support member and the push rod are sequentially mounted on the pivot; a first end of the connecting rod is eccentrically hinged on the handle, and a second end of the connecting rod is hinged with a first end of the push rod; the stop block and the support member are hinged through a fixed mandrel; the stop block is provided with a stop groove, a second end of the push rod matches with the stop groove, and a first torsion spring is arranged between the driving plate and the support member; and when the push rod drives the stop block to move, the stop block drives the support member to move, and meanwhile, the support member drives the driving plate to move through the first torsion spring. The operating mechanism of the small circuit breaker in the utility model is simple in structure, low in cost and good in stability.
Description
Technical field
The utility model relates to breaker technical field, is specifically related to a kind of operating mechanism of miniature circuit breaker.
Background technology
Miniature circuit breaker is claimed automatic switch again, and it is an existing hand switch effect, can carry out the electrical equipment of decompression, under-voltage, overload, short-circuit protection again automatically.Circuit breaker can automatic shutdown circuit when fault such as serious overload or short circuit takes place in the circuit; Its function is equivalent to the combination of Fuse switch and mistake underheat relay etc.; And after the disjunction fault, generally need not change parts, thereby obtained using widely.
Miniature circuit breaker generally partly is made up of thermo magnetic trip release device, arc quenching system, wiring system, operating mechanism etc., and the performance of operating mechanism directly influences the function of miniature circuit breaker.Existing miniature circuit breaker operating mechanism part is more, and the complex structure tripping force is bigger, easy slide fastener behind the frequent operation, and poor stability, this operating mechanism has not only improved cost, and the production installation process is also inconvenient.
The utility model content
In order to address the above problem, the utility model provide a kind of simple in structure, cost is lower, the stability operating mechanism of miniature circuit breaker preferably.
A kind of operating mechanism of miniature circuit breaker comprises handle, connecting rod, push rod, block, strutting piece, drive plate and contact point arm, also comprises Handle axis and pivot, and said Handle axis and pivot are individually fixed in the shell inboard of miniature circuit breaker;
Said handle is installed on the Handle axis, and said drive plate, strutting piece, push rod are installed on the pivot successively; The first end off-centre of said connecting rod is articulated on the handle, and second end of said connecting rod and first end of said push rod are hinged; Said strutting piece one end is provided with stationary spindle, and first end of said block and said strutting piece are hinged through stationary spindle; Second end of block is provided with the shake-up boss that cooperates with the electromagnetic tripping apparatus of miniature circuit breaker; Offer retaining groove between first end of block and second end; Second end of said push rod cooperates with retaining groove; When closed miniature circuit breaker, second end of push rod drives block along retaining groove and moves and compress block;
Be provided with first torsion spring between said drive plate and the strutting piece, said first torsion spring is installed on pivot, and an end of first torsion spring blocks strutting piece, and the other end of first torsion spring blocks drive plate;
First end of said drive plate is provided with draw-in groove, and first end of said contact point arm is fixed in drive plate through draw-in groove, and second end of said contact point arm is provided with moving contact;
When push rod drove the block motion, block passed through stationary spindle and drives support movements, and simultaneously, strutting piece drives the drive plate motion through first torsion spring, and the moving contact of contact point arm is along with the motion of drive plate is moved to the fixed contact of miniature circuit breaker.
Wherein, said retaining groove is " W " type, and second end of said push rod is provided with the first pressure contact block and second that cooperates with said retaining groove and presses contact block.
Wherein, the operating mechanism of said miniature circuit breaker also comprises the elasticity resistor of anti-stop block slide fastener.
Wherein, said elasticity resistor is the rubber-like depression bar, and said depression bar one end is fixed in first end of block, and the shell inboard of the other end of said depression bar and miniature circuit breaker touches.
Wherein, said elasticity resistor is for being located at second torsion spring between block and the strutting piece, and said second torsion spring is installed on the stationary spindle of strutting piece, and an end of second torsion spring is pushed down the protrusion piece of block, and the other end of second torsion spring is pushed down the protrusion piece of strutting piece.
Wherein, said connecting rod is a bending bent rod in obtuse angle, and said bent rod comprises first bar that is connected with handle, and second bar that is connected with push rod, and the length of said first bar is less than the length of second bar.
Wherein, second end of said drive plate is provided with the state indicateing arm that shows the moving contact state, and said state indicateing arm comprises closure state indicateing arm and trip status indicateing arm.
Wherein, said operating mechanism also comprises a pull bar, and said pull bar one end and said block are hinged, and the other end of pull bar is positioned at bimetal leaf one side of miniature circuit breaker; After overcurrent continues a period of time, bimetallic sector-meeting distortion, this moment, the bimetal leaf pushing drawing rod was to the opposite direction motion of fixed contact under the effect of deformation force, and pull bar drives the block motion until dropout.
Wherein, said operating mechanism also comprises the resistance spring that a part of tripping force is provided, and said resistance spring first end is fixed in the side of the state indicateing arm of drive plate, and the other end is fixed in the shell inboard of miniature circuit breaker.
Wherein, said strutting piece also is provided with the strutting piece projection, and said drive plate also is provided with the drive plate projection; When drive plate and support movements, strutting piece projection and drive plate projection press each other.
The beneficial effect of the utility model is:
(1) the miniature circuit breaker operating mechanism linkage part of the utility model is less, simple in structure, cost is lower, is connected through first torsion spring between strutting piece and the drive plate, and stability better;
(2) second end of push rod be provided with cooperate with said retaining groove first press contact block and second to press contact block, two designs of pressing contact blocks have effectively reduced the slide fastener that the frequent use because of operating mechanism causes.
Description of drawings
Fig. 1 is the internal structure sketch map of the miniature circuit breaker of application the utility model.
Fig. 2 is the structural representation of operating mechanism of the miniature circuit breaker of the utility model.
The structural representation of the other direction of Fig. 2 of Fig. 3.
Fig. 4 is the structural representation of the miniature circuit breaker of application the utility model.
Description of reference numerals is following:
10-Handle axis; 11-handle;
12-connecting rod; 20-pivot;
21-push rod; 22-block;
23-strutting piece; 24-drive plate;
25-contact point arm; 26-the first torsion spring;
27-depression bar; 28-pull bar;
29-resistance spring; 30-shell;
31-the first binding post; 32-fixed contact;
33-the second binding post; 36-bimetal leaf;
121-the first bar; 122-the second bar;
211-the first presses contact block; 212-the second presses contact block;
221-retaining groove; 222-shake-up boss;
231-stationary spindle; 232-strutting piece projection;
241-draw-in groove; 242-state indicateing arm;
243-closure state indicateing arm; 244-trip status indicateing arm;
245-drive plate projection; 251-moving contact;
341-solenoid; 342-moving iron core;
343-release lever; 351-lead the arc plate;
352-arc control device; 353-insulating barrier;
361-flexible conductor.
Embodiment
For the purpose, technical scheme and the advantage that make utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.
Embodiment one: referring to Fig. 1 to Fig. 4; A kind of operating mechanism of miniature circuit breaker; Comprise handle 11, connecting rod 12, push rod 21, block 22, strutting piece 23, drive plate 24 and contact point arm 25; Also comprise Handle axis 10 and pivot 20, said Handle axis 10 and pivot 20 are individually fixed in shell 30 inboards of miniature circuit breaker;
Said handle 11 is installed on the Handle axis 10, and said drive plate 24, strutting piece 23, push rod 21 are installed on the pivot 20 successively; The first end off-centre of said connecting rod 12 is articulated on the handle 11, and second end of said connecting rod 12 and first end of said push rod 21 are hinged; Said strutting piece 23 1 ends are provided with stationary spindle 231, and first end of said block 22 and said strutting piece 23 are hinged through stationary spindle 231; Second end of block 22 is provided with the shake-up boss 222 that cooperates with the electromagnetic tripping apparatus of miniature circuit breaker; Offer retaining groove 221 between first end of block 22 and second end; Second end of said push rod 21 cooperates with retaining groove 221; When closed miniature circuit breaker, second end of push rod 21 drives blocks 22 along retaining groove 221 and moves and compress block 22;
Be provided with first torsion spring 26 between said drive plate 24 and the strutting piece 23, the other end that the end that said first torsion spring 26 is installed on pivot 20, the first torsion springs 26 blocks strutting piece 23, the first torsion springs 26 blocks drive plate 24;
First end of said drive plate 24 is provided with draw-in groove 241, and first end of said contact point arm 25 is fixed in drive plate 24 through draw-in groove 241, and second end of said contact point arm 25 is provided with moving contact 251;
When push rod 21 drives block 22 motions; Block 22 drives strutting piece 23 motions through stationary spindle 231; Simultaneously, strutting piece 23 drives drive plate 24 motions through first torsion spring 26, and the moving contact 251 of contact point arm 25 is along with the motion of drive plate 24 is moved to the fixed contact 32 of miniature circuit breaker.
Wherein, said retaining groove 221 is " W " type, and second end of said push rod 21 is provided with the first pressure contact block 211 and second that cooperates with said retaining groove 221 and presses contact block 212.Second presses contact block 212 that corresponding pressure touch can be provided after the first pressure contact block 211 is threaded off because of factors such as frequent operations, reduces the slide fastener between push rod 21 and the retaining groove 221.
Wherein, the operating mechanism of said miniature circuit breaker also comprises the elasticity resistor of anti-stop block 22 slide fasteners.
Wherein, said elasticity resistor is a rubber-like depression bar 27, and said depression bar 27 1 ends are fixed in first end of block 22, and the other end of said depression bar 27 and the shell of miniature circuit breaker 30 inboards touch.Depression bar 27 has played certain anti-slide fastener effect, and is convenient to install.
Wherein, said connecting rod 12 is bending bent rods in obtuse angle, and said bent rod comprises first bar 121 that is connected with handle 11, and second bar 122 that is connected with push rod 21, and the length of said first bar 121 is less than the length of second bar 122.Thisly be designed with the interlock that is beneficial between connecting rod 12 and the push rod 21.
Wherein, second end of said drive plate 24 is provided with the state indicateing arm 242 that shows moving contact 251 states, and said state indicateing arm 242 comprises closure state indicateing arm 243 and trip status indicateing arm 244.State indicateing arm 242 corresponding miniature circuit breaker shell 30 positions have corresponding aperture; Closure state indicateing arm 243 shows that with Green Marker trip status indicateing arm 244 shows with red-label, when being in different conditions, can see the color that this state is corresponding from aperture position, has very visual indication effect.
Wherein, said operating mechanism also comprises a pull bar 28, and said pull bar 28 1 ends and said block 22 are hinged, and the other end of pull bar 28 is positioned at bimetal leaf 36 1 sides of miniature circuit breaker; After overcurrent continued a period of time, bimetal leaf 36 can be out of shape, and this moment, bimetal leaf 36 pushing drawing rods 28 were to the opposite direction motion of fixed contact 32 under the effect of deformation force, and pull bar 28 drives block 22 motions until dropout.
Wherein, said operating mechanism also comprises the resistance spring 29 that a part of tripping force is provided, and said resistance spring 29 first ends are fixed in the side of the state indicateing arm 242 of drive plate 24, and the other end is fixed in shell 30 inboards of miniature circuit breaker.When the miniature circuit breaker failover need be threaded off, resistance spring 29 can provide suitable tripping force, effectively avoids accidents.
Wherein, said strutting piece 23 also is provided with strutting piece projection 232, and said drive plate 24 also is provided with drive plate projection 245; When drive plate 24 moved with strutting piece 23, strutting piece projection 232 pressed with drive plate projection 245 each other.
Use the miniature circuit breaker of the operating mechanism of the utility model to comprise shell 30, fixed contact 32, electromagnetic tripping apparatus, arc-extinguishing mechanism, operating mechanism, and first binding post 31 and second binding post 33 that are fixed in shell; Moving contact 251 is electrically connected with second binding post 33;
Electromagnetic tripping apparatus comprises solenoid 341, moving iron core 342 and release lever 343; Fixed contact 32 is electrically connected with first binding post 31 through solenoid 341; Said moving iron core 342 is arranged in solenoid 341 can be with respect to solenoid 341 turnover; Promptly moving iron core 342 can move at the inner chamber of solenoid 341, and release lever 343 is fixed in the moving iron core 342, and said release lever 343 is equipped with the shake-up boss 222 of block 22.
Arc-extinguishing mechanism comprise be connected with second binding post 33 lead arc plate 351; And with lead the arc control device 352 that arc plate 351 is connected; Lead arc plate 351 inner surfaces and be provided with insulating barrier 353 near the position of fixed contact 32; The said arc plate 351 of leading is fixed in the shell with arc control device 352, the said arcing direction of arc plate 351 when being arranged on corresponding said moving contact 251 and breaking off with fixed contact 32 of leading.
Wherein, said miniature circuit breaker also comprises the bimetal leaf 36 that is electrically connected with second binding post 33, and moving contact 251 is electrically connected through flexible conductor 361 with bimetal leaf 36.
After overcurrent continues a period of time; Bimetal leaf 36 can be crooked to second binding post, 33 directions; This moment, bimetal leaf 36 pushing drawing rods 28 were to the motion of second binding post, 33 directions under the effect of deformation force, and pull bar 28 drives block 22 motions until dropout; Moving contact 251 breaks off with fixed contact 32, thereby realizes excess current protective function.
Electric current increases rapidly when short trouble appears in miniature circuit breaker; Moving iron core 342 in the electromagnetic tripping apparatus produces electromagnetic force under the magnetic field of solenoid 341; Electromagnetic force promotes the shake-up boss 222 that 343 moments of release lever push block 22; Make and thread off between block 22 and the push rod 21 that moving contact 251 breaks off with fixed contact 32, thereby realizes short-circuit protection function.
When moving contact 251 broke off with fixed contact 32, the arc spark of generation was introduced arc control device 352 by leading arc plate 351, its energy is subtracted go out, and adds the setting of insulating barrier 353, has guaranteed the quick arc extinguishing of miniature circuit breaker and the safety of use.
Embodiment two:
The difference part of present embodiment and embodiment one is: said elasticity resistor is for being located at second torsion spring between block 22 and the strutting piece 23; Said second torsion spring is installed on the stationary spindle 231 of strutting piece 23; One end of second torsion spring is pushed down the protrusion piece of block 22, and the other end of second torsion spring is pushed down the protrusion piece of strutting piece 23.Second torsion spring acts on block 22 and strutting piece 23, has effectively avoided between block 22 and the push rod 21 slide fastener easily, simplicity of design, and barrier effect is better.
The beneficial effect of the utility model is:
(1) the miniature circuit breaker operating mechanism linkage part of the utility model is less, simple in structure, cost is lower, is connected through first torsion spring 26 between strutting piece 23 and the drive plate 24, and stability better;
(2) second end of push rod 21 be provided with cooperate with said retaining groove 221 first press contact block 211 and second to press the design of 212, two pressures of contact block contact block effectively to reduce the slide fastener that the frequent use because of operating mechanism causes.
Above content is merely the preferred embodiment of the utility model; For those of ordinary skill in the art; According to the thought of the utility model, the part that on embodiment and range of application, all can change, this description should not be construed as the restriction to the utility model.
Claims (10)
1. the operating mechanism of a miniature circuit breaker is characterized in that: comprise handle, connecting rod, push rod, block, strutting piece, drive plate and contact point arm, also comprise Handle axis and pivot, it is inboard that said Handle axis and pivot are individually fixed in the shell of miniature circuit breaker;
Said handle is installed on the Handle axis, and said drive plate, strutting piece, push rod are installed on the pivot successively; The first end off-centre of said connecting rod is articulated on the handle, and second end of said connecting rod and first end of said push rod are hinged; Said strutting piece one end is provided with stationary spindle, and first end of said block and said strutting piece are hinged through stationary spindle; Second end of block is provided with the shake-up boss that cooperates with the electromagnetic tripping apparatus of miniature circuit breaker; Offer retaining groove between first end of block and second end; Second end of said push rod cooperates with retaining groove; When closed miniature circuit breaker, second end of push rod drives block along retaining groove and moves and compress block;
Be provided with first torsion spring between said drive plate and the strutting piece, said first torsion spring is installed on pivot, and an end of first torsion spring blocks strutting piece, and the other end of first torsion spring blocks drive plate;
First end of said drive plate is provided with draw-in groove, and first end of said contact point arm is fixed in drive plate through draw-in groove, and second end of said contact point arm is provided with moving contact;
When push rod drove the block motion, block passed through stationary spindle and drives support movements, and simultaneously, strutting piece drives the drive plate motion through first torsion spring, and the moving contact of contact point arm is along with the motion of drive plate is moved to the fixed contact of miniature circuit breaker.
2. the operating mechanism of a kind of miniature circuit breaker according to claim 1, it is characterized in that: said retaining groove is " W " type, second end of said push rod be provided with cooperate with said retaining groove first press contact block and second to press contact block.
3. the operating mechanism of a kind of miniature circuit breaker according to claim 1 is characterized in that: the operating mechanism of said miniature circuit breaker also comprises the elasticity resistor of anti-stop block slide fastener.
4. the operating mechanism of a kind of miniature circuit breaker according to claim 3; It is characterized in that: said elasticity resistor is the rubber-like depression bar; Said depression bar one end is fixed in first end of block, and the shell inboard of the other end of said depression bar and miniature circuit breaker touches.
5. the operating mechanism of a kind of miniature circuit breaker according to claim 3; It is characterized in that: said elasticity resistor is for being located at second torsion spring between block and the strutting piece; Said second torsion spring is installed on the stationary spindle of strutting piece; One end of second torsion spring is pushed down the protrusion piece of block, and the other end of second torsion spring is pushed down the protrusion piece of strutting piece.
6. the operating mechanism of a kind of miniature circuit breaker according to claim 3; It is characterized in that: said connecting rod is a bending bent rod in obtuse angle; Said bent rod comprises first bar that is connected with handle; And second bar that is connected with push rod, the length of said first bar is less than the length of second bar.
7. the operating mechanism of a kind of miniature circuit breaker according to claim 3 is characterized in that: second end of said drive plate is provided with the state indicateing arm that shows the moving contact state, and said state indicateing arm comprises closure state indicateing arm and trip status indicateing arm.
8. the operating mechanism of a kind of miniature circuit breaker according to claim 3, it is characterized in that: said operating mechanism also comprises a pull bar, and said pull bar one end and said block are hinged, and the other end of pull bar is positioned at bimetal leaf one side of miniature circuit breaker; After overcurrent continues a period of time, bimetallic sector-meeting distortion, this moment, the bimetal leaf pushing drawing rod was to the opposite direction motion of fixed contact under the effect of deformation force, and pull bar drives the block motion until dropout.
9. the operating mechanism of a kind of miniature circuit breaker according to claim 7; It is characterized in that: said operating mechanism also comprises the resistance spring that a part of tripping force is provided; Said resistance spring first end is fixed in the side of the state indicateing arm of drive plate, and the other end is fixed in the shell inboard of miniature circuit breaker.
10. according to the operating mechanism of each described a kind of miniature circuit breaker of claim 1 to 9, it is characterized in that: said strutting piece also is provided with the strutting piece projection, and said drive plate also is provided with the drive plate projection; When drive plate and support movements, strutting piece projection and drive plate projection press each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225189 CN202616152U (en) | 2012-05-18 | 2012-05-18 | Operating mechanism of small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225189 CN202616152U (en) | 2012-05-18 | 2012-05-18 | Operating mechanism of small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616152U true CN202616152U (en) | 2012-12-19 |
Family
ID=47349825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220225189 Expired - Lifetime CN202616152U (en) | 2012-05-18 | 2012-05-18 | Operating mechanism of small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616152U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709125A (en) * | 2012-05-18 | 2012-10-03 | 东莞基业电气设备有限公司 | Operating mechanism of small circuit breaker |
| CN107248486A (en) * | 2017-08-09 | 2017-10-13 | 南京云凯防雷科技股份有限公司 | A kind of back-up protection device of new big through-flow releasing structure |
| CN108963926A (en) * | 2018-06-06 | 2018-12-07 | 荣马电器有限公司 | A kind of high-strength bus duct and preparation method thereof |
-
2012
- 2012-05-18 CN CN 201220225189 patent/CN202616152U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709125A (en) * | 2012-05-18 | 2012-10-03 | 东莞基业电气设备有限公司 | Operating mechanism of small circuit breaker |
| CN102709125B (en) * | 2012-05-18 | 2014-06-18 | 东莞基业电气设备有限公司 | Operating mechanism of small circuit breaker |
| CN107248486A (en) * | 2017-08-09 | 2017-10-13 | 南京云凯防雷科技股份有限公司 | A kind of back-up protection device of new big through-flow releasing structure |
| CN107248486B (en) * | 2017-08-09 | 2019-10-11 | 南京云凯防雷科技股份有限公司 | A kind of back-up protection device of novel big through-flow releasing structure |
| CN108963926A (en) * | 2018-06-06 | 2018-12-07 | 荣马电器有限公司 | A kind of high-strength bus duct and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |