CN204614745U - The locker of the operating mechanism of circuit breaker - Google Patents

The locker of the operating mechanism of circuit breaker Download PDF

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Publication number
CN204614745U
CN204614745U CN201520267682.2U CN201520267682U CN204614745U CN 204614745 U CN204614745 U CN 204614745U CN 201520267682 U CN201520267682 U CN 201520267682U CN 204614745 U CN204614745 U CN 204614745U
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China
Prior art keywords
assembly
tripping
sheet metal
metal component
latch components
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Active
Application number
CN201520267682.2U
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Chinese (zh)
Inventor
李勇
孙吉升
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Zhejiang Chint Electrics Co Ltd
Shanghai Dianke Electrical Technology Co Ltd
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Zhejiang Chint Electrics Co Ltd
Shanghai Dianke Electrical Technology Co Ltd
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Application filed by Zhejiang Chint Electrics Co Ltd, Shanghai Dianke Electrical Technology Co Ltd filed Critical Zhejiang Chint Electrics Co Ltd
Priority to CN201520267682.2U priority Critical patent/CN204614745U/en
Application granted granted Critical
Publication of CN204614745U publication Critical patent/CN204614745U/en
Priority to RU2017140334A priority patent/RU2696014C2/en
Priority to EP16785895.0A priority patent/EP3291276B1/en
Priority to US15/569,166 priority patent/US10199196B2/en
Priority to PCT/CN2016/079970 priority patent/WO2016173464A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of locker of operating mechanism of circuit breaker, and this locker is made up of tripping, sheet metal component and the bearing be arranged on sheet metal component.Tripping has snap close face, this snap close face comprises arc surface.Sheet metal component can rotate, and bearing is arranged on sheet metal component, and bearing contacts with snap close face.The snap close face of the locker of the operating mechanism of circuit breaker of the present utility model comprises arc surface, and this arc surface makes the arm of force of spring force to remain unchanged, thus reduces the risk occurring self-locking.

Description

The locker of the operating mechanism of circuit breaker
Technical field
The utility model relates to Low Voltage Electrical Apparatus, more particularly, relates to the locker in the operating mechanism of device for switching.
Background technology
Circuit breaker is the device for switching played a protective role main in low-voltage network, and circuit breaker transships and short-circuit protection for circuit provides.Moulded case circuit breaker is one wherein, and Large Copacity breaker of plastic casing refers to that rated current meets or exceeds the circuit breaker of 800A, this circuit breaker is generally three poles and quaternary structure, and namely this circuit breaker has three groups or four groups of contacts, corresponding three-phase or four circuitry phases.In order to meet selective protection requirement certain in electric power system, circuit breaker must have certain short circuit withstand capacity.Therefore, the contact assembly of Large Copacity breaker of plastic casing, especially the transmission component of multipole must have higher strength and stiffness, meets the contact pressure of multipole, the isoparametric homogeneity of the excess of stroke.On the other hand, consider cost and application market, the operating mechanism overwhelming majority of Large Copacity breaker of plastic casing is manual operation pattern, under the requirement meeting dependent manual operation power, the power output of operating mechanism is often limited, therefore manual operating mechanism of breaker often requires that power output is high as far as possible, can ensure again the homogeneity of multipole contact parameter.
The latching device of operating mechanism is used for operating mechanism to be locked in closing position or open position, and in time operating mechanism is loosened when needs are threaded off and threads off, therefore the stability of latching device and response speed for operating mechanism performance have important effect.For the stability of latching device, especially need the situation avoiding occurring self-locking (also referred to as " fast knot "), if there is latching device self-locking, so latching device cannot be threaded off, and operating mechanism can be caused to damage.
Utility model content
The utility model is intended to propose a kind of locker can avoiding locking phenomenon.
According to an embodiment of the present utility model, propose a kind of locker of operating mechanism of circuit breaker, this locker is made up of tripping, sheet metal component and the bearing be arranged on sheet metal component.Tripping has snap close face, this snap close face comprises arc surface.Sheet metal component can rotate, and bearing is arranged on sheet metal component, and bearing contacts with snap close face.
In one embodiment, operating mechanism comprises: tripping assembly, left plate assembly, right plate assembly, latch components, axle assembly, lever assembly and spindle assemblies.Tripping assembly, latch components and lever assembly are arranged between left plate assembly and right plate assembly, and axle assembly and spindle assemblies run through left plate assembly and right plate assembly and extend to outside left plate assembly and right plate assembly.Tripping assembly, latch components, axle assembly, lever assembly and spindle assemblies link.Wherein, tripping assembly comprises tripping; Latch components comprises the sheet metal component rotated around the axis and the bearing be arranged on sheet metal component; Latch components restriction tripping assembly; Axle assembly comprises semiaxis, and sheet metal component contacts with semiaxis, axle assembly restriction latch components.
In one embodiment, tripping assembly comprises tripping, upper connecting rod and lower link, and upper connecting rod is riveted in tripping, and lower link is riveted on connecting rod.Second end of tripping is hook-type, and the outside of hook-type forms the second inclined-plane, and this second inclined-plane is snap close face.
In one embodiment, latch components comprises sheet metal component, bearing, latch components spring and rotating shaft.Sheet metal component is arranged in rotating shaft, and latch components spring housing is in rotating shaft, and latch components spring applies spring force to sheet metal component, and bearing is arranged on sheet metal component, bearing and the second contact of incline plane, latch components restriction tripping assembly.
In one embodiment, axle assembly comprises semiaxis, and the two ends of semiaxis are arranged on left plate assembly and right plate assembly respectively, and sheet metal component contacts with axle assembly.
In one embodiment, there is the arm of force in the second inclined-plane of tripping and bearing touch, and latch components spring utilizes this arm of force generation moment to order about sheet metal component and rotates around the axis, and makes the end of sheet metal component compress semiaxis.
In one embodiment, snap close face comprises arc surface, and arc surface makes the arm of force remain unchanged.
The snap close face of the locker of the operating mechanism of circuit breaker of the present utility model comprises arc surface, and this arc surface makes the arm of force of spring force to remain unchanged, thus reduces the risk occurring self-locking.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the structure chart of the operating mechanism of the circuit breaker adopting locker of the present utility model.
Fig. 2 a and Fig. 2 b discloses the structure chart of tripping assembly in the operating mechanism of the circuit breaker shown in Fig. 1.
Fig. 3 a discloses the structure chart of left plate assembly and latch components in the operating mechanism of the circuit breaker shown in Fig. 1.
Fig. 3 b discloses the structure chart of left plate assembly and latch components from another angle.
Fig. 4 a discloses the structure chart of the first embodiment of latch components.
Fig. 4 b discloses the structure chart of the second embodiment of latch components.
Fig. 5 discloses the structure chart of right plate assembly in the operating mechanism of the circuit breaker shown in Fig. 1.
Fig. 6 a and Fig. 6 b discloses the structure chart of lever assembly in the operating mechanism of the circuit breaker shown in Fig. 1.
Fig. 7 a and Fig. 7 b discloses the structure chart of spindle assemblies in the operating mechanism of the circuit breaker shown in Fig. 1.
Fig. 8 discloses the operating mechanism of the circuit breaker shown in Fig. 1 and the assembly structure figure of circuit breaker.
Fig. 9 discloses the operating mechanism of the circuit breaker shown in Fig. 1 and the assembly structure figure of circuit breaker.
Figure 10 a and Figure 10 b discloses the operating mechanism shown in Fig. 1 and drives moving contact to carry out the process of closing a floodgate.
Figure 11 a and Figure 11 b discloses the operating mechanism shown in Fig. 1 and drives moving contact to carry out the process of separating brake.
Figure 12 a and Figure 12 b discloses the operation principle of locker.
Embodiment
Shown in figure 1, Fig. 1 discloses the structure chart of the operating mechanism of the circuit breaker adopting locker of the present utility model.Operating mechanism 107 comprises tripping assembly 100, left plate assembly 101, latch components 102, axle assembly 103, right plate assembly 104, lever assembly 105 and spindle assemblies 106.
Fig. 2 a and Fig. 2 b discloses the structure chart of tripping assembly.Shown in figure 2a and Fig. 2 b, tripping assembly 100 comprises tripping 204.The first end of tripping 204 has the first hole 207, and rotating shaft 208 is riveted in the first hole 207.The middle part of tripping 204 has pin shaft hole, and upper connecting rod 201, through pin shaft hole, is riveted in tripping 204 by bearing pin 203.Have spacing hole in the position near pin shaft hole, position-limitting pin 205 is riveted in spacing hole.Due to shown in Fig. 2 a be riveted position-limitting pin 205 after state, therefore spacing hole is stopped, the position of spacing hole and the position at position-limitting pin 205 place.Second end of tripping 204 is hook-type, and the inner side of hook-type forms the first inclined-plane 256, the outside of hook-type forms the second inclined-plane 253.It should be noted that, although 253 are known as the second inclined-plane, " inclined-plane " circular arc should be actually, or at least comprise the arc surface of a part.The upper end of upper connecting rod 201 is riveted in tripping 204, and the middle part of upper connecting rod 201 has pin shaft hole, and lower link 202, through pin shaft hole, is riveted on upper connecting rod 201 by bearing pin 203.The lower end of upper connecting rod 201 has connecting hole 236.As shown in Figure 2 b, the upper end of lower link 202 has connecting hole 283, and lower link 202 is riveted on upper connecting rod 201 through connecting hole 283 by pivot pin, and the lower end of lower link 202 has connecting hole 282.
Lateral plate component comprises left plate assembly 101 and right plate assembly 104.Left plate assembly 101 and right plate assembly 104 have symmetrical structure.Shown in figure 1, tripping assembly 100, latch components 102, axle assembly 103, lever assembly 105 and spindle assemblies 106 all between left plate assembly 101 and right plate assembly 104.Further, the two ends of latch components 102, axle assembly 103, lever assembly 105 and spindle assemblies 106 are arranged on left plate assembly 101 and right plate assembly 104 respectively.Fig. 3 a and Fig. 3 b discloses the structure of left plate assembly, and wherein Fig. 3 a and Fig. 3 b discloses the structure of left plate assembly respectively from different angles.As shown in the figure, left plate assembly 101 comprises left plate 209.Left plate 209 forms bending hole 210 in bottom near the position at two ends, and bending hole 210 comprises the extension board vertical with side plate 209, and is opened in the hole on extension board.On bending hole 210, riveted joint has nut 211.Bending hole 210 and nut 211 are for being installed to circuit breaker by operating mechanism 107.Left plate 209 has installing hole 212 at middle part near the position of bottom, and installing hole 212 is for installing rotating shaft 213, and rotating shaft 213 is rotating shafts of lever assembly 105, and lever assembly 105 213 rotates around the shaft.As shown in Figure 3 b, rotating shaft 213 is minor axises, and rotating shaft 213 has end cap towards the end inside left plate 209.Left plate 209 has installing hole 215 at the second end near the position at top, and the rotating shaft 217 of latch components 102 is arranged in installing hole 215, thus latch components 102 is installed on left plate assembly 101.Left plate 209 has half axis hole 226, half axis hole 226 for assembling axle assembly 103 at the second end near the position of bottom.Left plate 209 has a semicircular breach 299 in the position of the bottom near first end, and this breach 299, for holding spindle assemblies 106, has an installing hole 290 above breach 299, and installing hole 290 is fixed for the screw for spindle assemblies 106.Left plate 209 has tripping installing hole 280 in the position at the top near first end, and tripping installing hole 280 is for holding the rotating shaft 208 of tripping assembly 100.
Fig. 5 discloses the structure chart of right plate assembly.Right plate assembly 104 and left plate assembly 101 have symmetrical structure, right plate 309 have with the bending hole 310 of left plate 209 symmetry, nut 311, for install rotating shaft 213 installing hole 312, for install the rotating shaft 217 of latch components 102 installing hole 315, for assemble axle assembly 103 half axis hole 227, for hold spindle assemblies 106 semicircular breach 399, for fix for the screw of spindle assemblies 106 installing hole 291, for holding the tripping installing hole 281 of the rotating shaft 208 of tripping assembly 100.
Latch components 102 comprises sheet metal component 219, locating shaft 220, bearing 221, latch components spring 222 and rotating shaft 217.Shown in figure 3a and Fig. 3 b, Primary Reference Fig. 3 b, it should be noted that, in order to more clearly express the mounting structure of latch components 102, Fig. 3 b and Fig. 3 a use two different angles to disclose structure that lateral plate component 101 and latch components 102, Fig. 3 b clearly disclose latch components.Fig. 4 a discloses the structure of sheet metal component 219 in latch components, locating shaft 220 and bearing 221.Sheet metal component 219 comprises the consistent panel beating sheet of two plate shapes, and two panels panel beating sheet is arranged at certain intervals, and two locating shafts 220 are fixed two panel beating sheets and formed sheet metal component 219.Bearing 221 is clipped between two panel beating sheets, and the two ends of bearing 221 are arranged on a panel beating sheet respectively.Bearing 221 is between two locating shafts 220.The upper end of sheet metal component 219 has axis hole, and by this axis hole, sheet metal component 219 is arranged in rotating shaft 217, and sheet metal component 219 can 217 rotate around the shaft.In rotating shaft 217, also cover has latch components spring 222, and latch components spring 222 is clipped between two panel beating sheets equally.Bearing 221 coordinates with the second inclined-plane 253 of tripping assembly 100, makes latch components 102 can carry out spacing to tripping assembly 100.Fig. 4 b discloses the structure chart of another embodiment of latch components, in the structure shown in Fig. 4 b, sheet metal component 219A comprises the inconsistent panel beating sheet of two plate shapes, wherein a slice panel beating sheet has bending pin, and another sheet panel beating sheet does not bend pin, two panels panel beating sheet has equally the hole that corotation axle 217 passes.Two panels panel beating sheet is arranged at certain intervals, and is connected by a sheet part, does not re-use locating shaft.In other words, sheet metal component 219A is single parts, the two panels panel beating sheet comprising sheet part and connected by sheet part.Bearing 221A is clipped between two panel beating sheets.
Shown in figure 1, axle assembly 103 comprises semiaxis 223.The two ends of semiaxis 223 are arranged on half axis hole 226 on the side plate 209 of left plate assembly 101 respectively, and in half axis hole 227 on the side plate 209 of right plate assembly 104.Axle assembly 103 have two fault receiving elements, Fisrt fault receiving element 224 and the second fault receiving element 225.Fisrt fault receiving element 224 and the second fault receiving element 225 are all between left plate assembly 101 and right plate assembly 104, wherein Fisrt fault receiving element 224 is arranged near the side plate interior sides of left plate assembly 101, and the second fault receiving element 225 is arranged near the side plate interior sides of right plate assembly 104.Axle assembly 103 and latch components 102 form the secondary snap close of operating mechanism jointly.
Fig. 6 a and Fig. 6 b discloses the structure chart of lever assembly.Lever assembly 105 comprises panel beating bending part 228, and panel beating bending part 228 bending forms roof and two sidewalls, and roof and two sidewalls form the structure of a semi-surrounding.The roof of panel beating bending part 228 is riveted installation shaft 229, installation shaft 229 is for fitting operation handle 230.Panel beating bending part 228 has a mounting groove 233 separately at the intersection of roof and two sidewalls.Spring fitting axle 232 is housed between two mounting grooves 233.The upper end of lever assembly spring 231 is connected on spring fitting axle 232.In the illustrated embodiment in which, two lever assembly springs 231 are had to be set up in parallel.Lever assembly spring 231 surround by panel beating bending part 228.The lower end of lever assembly spring 231 has connecting hole 234, and connecting hole 234 aligns with the connecting hole 236 of upper connecting rod 201 lower end.Connecting axle 235, through connecting hole 234 and connecting hole 236, makes lever assembly spring 231 be connected with the upper connecting rod 201 of tripping assembly 100, thus lever assembly 105 and tripping assembly 101 link.Panel beating bending part 228 forms the extension 258 of shallow hook-type at the first end of the bottom of two sidewalls, and the extension 258 of this shallow hook-type has the moulding of similar " boots ".The extension 258 of this shallow hook-type plays and carries out spacing effect to the rotation of lever assembly 105.Panel beating bending part 228 is formed with semicircular breach 241 in the bottom of two sidewalls near the position of the second end, and this semicircular breach 241 is for holding rotating shaft 213.Lever assembly 105 213 rotates around the shaft.
Fig. 7 a and Fig. 7 b discloses the structure chart of spindle assemblies.Spindle assemblies 106 comprises main shaft 237.Main shaft 237 has multiple cantilever 238, and in one embodiment, multiple cantilever 238 is welded on main shaft 237.The moving contact component of the corresponding multiple pole of multiple cantilever 238 difference, corresponds to polyphase circuit in other words.Each cantilever 238 has connecting hole.Main shaft 237 also have a pair main shaft locating part 239 and 240.This pair main shaft locating part 239 and 240 is arranged on the both sides of one of them of multiple cantilever 238, and this is symmetrical relative to this cantilever 238 to the position of main shaft locating part 239 and 240 on main shaft 237.Main shaft locating part 239 and 240 corresponds to a wherein circuitry phase.The end of main shaft locating part 239 and 240 has the guide vane end stop 259 of bending, the guide vane end stop 259 of this bending can coordinate with the extension 258 of the shallow hook-type of " boots " moulding on panel beating bending part 228, utilizes spindle assemblies 106 to carry out spacing to the slewing area of lever assembly 105.Fig. 7 b discloses the installation fitting of spindle assemblies.Installation fitting comprises two parts: Part I 242 and Part II 243.Part I 242 and Part II 243 are an entirety.Part I 242 forms a circular hole, and the diameter in this hole mates with main shaft 237, and main shaft 237 passes from this hole.Part II 243 is positioned at the top of Part I 242, and Part II 243 has screw.Left plate assembly 101 and right plate assembly 104 are installed an installation fitting respectively.Align respectively at semicircular breach 299 or 399 in hole on Part I 242, for accommodation main shaft 237.Screw on Part II 243 aims at installing hole 290 or installing hole 291 respectively, and installation fitting, through installing hole and screw, is installed on left plate assembly and right plate assembly together with main shaft by screw.
Composition graphs 1, Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6 a, Fig. 6 b, Fig. 7 a and Fig. 7 b, tripping assembly 100, left plate assembly 101, latch components 102, axle assembly 103, right plate assembly 104, lever assembly 105 and spindle assemblies 106 are assembled into operating mechanism 107 in such a way.The two ends of the rotating shaft 208 of tripping assembly 100 are arranged on the tripping installing hole 280 (being positioned on left plate 209) of left plate assembly 101 and the tripping installing hole 281 (being positioned on right plate 309) of right plate assembly 104 respectively.The semicircular breach 241 of the both sides sidewall bottom of the panel beating bending part 228 of lever assembly 105 is erected in the rotating shaft 213 of left plate assembly 101 and right plate assembly 104 respectively.As elucidated before, rotating shaft 213 is minor axises, and two rotating shafts 213 are arranged on left plate 209 and right plate 309 respectively, and rotating shaft 213 has end cap towards the end of inner side, the diameter of end cap is greater than rotating shaft, and end cap carries out horizontal spacing to the sidewall of panel beating bending part 228.Connecting hole 234 bottom lever assembly spring 231 in lever assembly 105 aligns with the connecting hole 236 of upper connecting rod 201 lower end, and lever assembly spring 231, through connecting hole 234 and connecting hole 236, is connected with upper connecting rod 201 by connecting axle 235.The main shaft 237 of spindle assemblies 106, through the hole on the Part I 242 of two installation fittings, makes main shaft 237 be connected on two installation fittings.Main shaft 237 is placed to the semicircular indentations 299 (being arranged on left plate 209) of left plate assembly 101 and the semicircular indentations 399 (being positioned on right plate 309) of right plate assembly 104, and the screw on the Part II 243 of two installation fittings aims at the installing hole 290 (being positioned on left plate 209) on left plate assembly 101 and the installing hole 291 (being positioned on right plate 309) on right plate assembly 104 respectively.Installation fitting, through the screw on the Part II 243 of two installation fittings and installing hole 290,291, is fixed on left plate assembly and right plate assembly by screw, also completes the assembling of spindle assemblies 106 and left plate assembly 101 and right plate assembly 104.One of them cantilever 238 of spindle assemblies 106 is connected with the lower link 202 of tripping assembly 100, connecting hole on cantilever 238 is connected (bearing pin 246 discloses in fig. 11) by bearing pin 246 with the connecting hole 282 of lower link 202 lower end, form bar linkage structure, spindle assemblies 106 realizes being connected with tripping assembly 100.For the polyphase circuit with multi-polar structure, spindle assemblies 106 has multiple cantilever 238, the corresponding pole of each cantilever 238, operating mechanism 107 is arranged in the structure of wherein a certain pole.To being connected by the lower link in the cantilever 238 of pole and the tripping assembly of operating mechanism.For left plate assembly 101 and right plate assembly 104, except being fixed by means of the rotating shaft 217 of latch components 102, at the other end relative to latch components 102, also there is another fixed axis 247.Fixed axis 247 is same to be fixed by screw through the hole be positioned on left plate assembly and right plate assembly, and left plate assembly 101 and right plate assembly 104 are fixed together by fixed axis 247 together with rotating shaft 217.
With reference to figure 8 and Fig. 9, disclose the assembly structure figure of operating mechanism 107 and circuit breaker 108.Fig. 8 and Fig. 9 is the structure chart after the top cover of removal circuit breaker.Shown in figure 8 and Fig. 9, circuit breaker 108 comprises pedestal 109 and middle cover 159.In the illustrated embodiment in which, circuit breaker 108 is multipole circuit breakers, has the multipole moving contact 110 of corresponding polyphase circuit.Operating mechanism 107 is arranged on the moving contact of a wherein pole.Nut 211 on the left plate assembly 101 of screw 249 and operating mechanism and right plate assembly 104 coordinates, and left plate assembly 101 and right plate assembly 104 is fixed on middle cover 159, thus is installed to by operating mechanism 107 on the moving contact of a wherein pole.Multipole moving contact 110 is connected respectively on the cantilever 238 of the correspondence of spindle assemblies 106 by bearing pin 250, the moving contact 110 of each pole is connected to cantilever 238 corresponding with it.Bearing pin 250 is fixed in the connecting hole on cantilever 238.With reference to figure 7a, each cantilever 238 has two connecting holes, wherein the connecting hole of top is used for being connected with tripping assembly, and the connecting hole of below is used for being connected with moving contact.Operating grip 230 is arranged on lever assembly 105, and more particularly, operating grip 230 is arranged in installation shaft 229.
Figure 10 a and Figure 10 b discloses aforesaid operating mechanism and drives moving contact to carry out the process of closing a floodgate.Figure 10 a mainly discloses the making process of operating mechanism, and Figure 10 b discloses the process that operating mechanism drives switch on of moving contact.When closing a floodgate, the tail end of the tripping 204 in tripping assembly 100, the outside of hook-type formed the second inclined-plane 253 withstood by bearing 221 and limit by bearing 221.The sheet metal component 219 of latch components 102 limit by the semiaxis 223 of axle assembly 103.Lever assembly 105 213 counterclockwise movement around the shaft under manpower effect, such as, Manual-pushing operating grip 230 drives lever assembly to rotate.In the embodiment shown in Figure 10 a and Figure 10 b, illustrated combined floodgate direction as indicated with an arrow, is that lever assembly is rotated counterclockwise.After promotion lever assembly 105 rotates counterclockwise, lever assembly spring 231 drives upper connecting rod 201 with bearing pin 203 for axis of rotation, and upper connecting rod 201 rotates clockwise around bearing pin 203.Upper connecting rod 201 drives lower link 202 to move.Lower link 202 drives the cantilever 238 (this cantilever 238 connects in tripping assembly 100) of spindle assemblies 106 by bearing pin 246, cantilever 238 drives main shaft 237 to rotate around the axle center 106A of main shaft further, and main shaft 237 rotates clockwise around axle center 106A.The rotation of main shaft 237 drives other cantilever 238 to link, and each cantilever 238 drives each moving contact 110 to complete combined floodgate by bearing pin 250.Each moving contact 110 rotates counterclockwise around respective center of rotation 255.Get back to Fig. 2 a, the limited pin 205 of the extreme position that upper connecting rod 201 rotates clockwise limited, when upper connecting rod 201 turn to contact with position-limitting pin 205 time, upper connecting rod 201 no longer rotates.So after having closed a floodgate, upper connecting rod 201 is undertaken spacing by position-limitting pin 205.
Figure 11 a and Figure 11 b discloses aforesaid operating mechanism and drives moving contact to carry out the process of separating brake.Figure 11 a mainly discloses the separating brake process of operating mechanism, and Figure 11 b discloses the process that operating mechanism drives moving contact separating brake.When carrying out separating brake, lever assembly 105 213 clockwise movement around the shaft under manpower effect, such as, Manual-pushing operating grip 230 drives lever assembly to rotate.In the embodiment shown in Figure 11 a and Figure 11 b, illustrated separating brake direction as indicated with an arrow, is that lever assembly is rotated clockwise.After promotion lever assembly 105 rotates clockwise, lever assembly spring 231 drives upper connecting rod 201 with bearing pin 203 for axis of rotation, and upper connecting rod 201 rotates counterclockwise around bearing pin 203.Upper connecting rod 201 drives lower link 202 to move.Lower link 202 drives the cantilever 238 (this cantilever 238 is connected with tripping assembly 100) of spindle assemblies 106 by bearing pin 246, cantilever 238 drives main shaft 237 to rotate around the axle center 106A of main shaft further, and main shaft 237 rotates counterclockwise around axle center 106A.The rotation of main shaft 237 drives other cantilever 238 to link, and each cantilever 238 drives each moving contact 110 to complete separating brake by bearing pin 250.Each moving contact 110 rotates clockwise around respective center of rotation 255.In conjunction with reference to figure 7a, the extreme position that main shaft 237 rotates counterclockwise determined by main shaft locating part 239,240 and fixed axis 247.With reference to figure 11a and Figure 11 b, when main shaft locating part 239,240 contacts with fixed axis 247, spindle unit no longer rotates.
As elucidated before, tripping assembly 100, latch components 102 and axle assembly 103 form latching device.More specifically, the sheet metal component 219 in the second inclined-plane 253 (i.e. snap close face) of tripping assembly 100 second end, latch components 102 and bearing 211 form locker.Figure 12 a and Figure 12 b discloses the operation principle of locker.As shown in the figure, when the second inclined-plane 253 of tripping 204 is withstood by bearing 221 and locks, there is arm of force L5, latch components spring 222 utilizes this arm of force L5 generation moment to order about sheet metal component 219 and 217 rotates counterclockwise around the shaft, and the end 219A of sheet metal component 219 compresses semiaxis 223.The latch components spring 222 be enclosed within rotating shaft 217 utilizes arm of force L5 to produce moment.When detaining (reset) again, for ensureing that bearing reliably can enter into the second inclined-plane 253 and lock with it, tripping 204 must be made to there is stroke, in the process of detaining again, bearing 221 can compress face 204A in tripping 204 and the second inclined-plane 253, and with face 204A and the second inclined-plane 253 tangent.Mention above, the second inclined-plane 253 is an arc surface or the arc surface at least comprising a part, and therefore, the face 253 of circular arc can ensure that arm of force L5 keeps substantially constant, to prevent the generation of self-locking (also referred to as " fast knot ") phenomenon.
The snap close face of the locker of the operating mechanism of circuit breaker of the present utility model comprises arc surface, and this arc surface makes the arm of force of spring force to remain unchanged, thus reduces the risk occurring self-locking.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.

Claims (7)

1. a locker for the operating mechanism of circuit breaker, is characterized in that, this locker is made up of tripping, sheet metal component and the bearing be arranged on sheet metal component;
Described tripping has snap close face, this snap close face comprises arc surface;
Described sheet metal component can rotate, and described bearing is arranged on sheet metal component, and described bearing contacts with snap close face.
2. the locker of the operating mechanism of circuit breaker as claimed in claim 1, it is characterized in that, described operating mechanism comprises: tripping assembly, left plate assembly, right plate assembly, latch components, axle assembly, lever assembly and spindle assemblies;
Tripping assembly, latch components and lever assembly are arranged between left plate assembly and right plate assembly, and axle assembly and spindle assemblies run through left plate assembly and right plate assembly and extend to outside left plate assembly and right plate assembly;
Tripping assembly, latch components, axle assembly, lever assembly and spindle assemblies link;
Wherein, tripping assembly comprises tripping; Latch components comprises the sheet metal component rotated around the axis and the bearing be arranged on sheet metal component; Latch components restriction tripping assembly; Axle assembly comprises semiaxis, and described sheet metal component contacts with semiaxis, axle assembly restriction latch components.
3. the locker of the operating mechanism of circuit breaker as claimed in claim 2, it is characterized in that, described tripping assembly comprises tripping, upper connecting rod and lower link, and upper connecting rod is riveted in tripping, and lower link is riveted on connecting rod;
Second end of tripping is hook-type, and the outside of hook-type forms the second inclined-plane, and this second inclined-plane is snap close face.
4. the locker of the operating mechanism of circuit breaker as claimed in claim 3, it is characterized in that, described latch components comprises sheet metal component, bearing, latch components spring and rotating shaft;
Sheet metal component is arranged in rotating shaft, and latch components spring housing is in rotating shaft, and latch components spring applies spring force to sheet metal component, and bearing is arranged on sheet metal component, bearing and described second contact of incline plane, latch components restriction tripping assembly.
5. the locker of the operating mechanism of circuit breaker as claimed in claim 4, it is characterized in that, described axle assembly comprises semiaxis, and the two ends of semiaxis are arranged on left plate assembly and right plate assembly respectively, and described sheet metal component contacts with axle assembly.
6. the locker of the operating mechanism of circuit breaker as claimed in claim 4, it is characterized in that, there is the arm of force in the second inclined-plane of tripping and bearing touch, latch components spring utilizes this arm of force generation moment to order about sheet metal component and rotates around the axis, and makes the end of sheet metal component compress semiaxis.
7. the locker of the operating mechanism of circuit breaker as claimed in claim 6, it is characterized in that, described snap close face comprises arc surface, and arc surface makes the described arm of force remain unchanged.
CN201520267682.2U 2015-04-28 2015-04-28 The locker of the operating mechanism of circuit breaker Active CN204614745U (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201520267682.2U CN204614745U (en) 2015-04-28 2015-04-28 The locker of the operating mechanism of circuit breaker
RU2017140334A RU2696014C2 (en) 2015-04-28 2016-04-22 Two-stage mechanical interlocking mechanism for automatic circuit breaker actuator
EP16785895.0A EP3291276B1 (en) 2015-04-28 2016-04-22 Secondary latch mechanism for operating mechanism of circuit breaker
US15/569,166 US10199196B2 (en) 2015-04-28 2016-04-22 Two-level latch mechanism for operation mechanism of circuit breaker
PCT/CN2016/079970 WO2016173464A1 (en) 2015-04-28 2016-04-22 Secondary latch mechanism for operating mechanism of circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520267682.2U CN204614745U (en) 2015-04-28 2015-04-28 The locker of the operating mechanism of circuit breaker

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CN204614745U true CN204614745U (en) 2015-09-02

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CN201520267682.2U Active CN204614745U (en) 2015-04-28 2015-04-28 The locker of the operating mechanism of circuit breaker

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016173464A1 (en) * 2015-04-28 2016-11-03 上海电科电器科技有限公司 Secondary latch mechanism for operating mechanism of circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016173464A1 (en) * 2015-04-28 2016-11-03 上海电科电器科技有限公司 Secondary latch mechanism for operating mechanism of circuit breaker
US10199196B2 (en) 2015-04-28 2019-02-05 Seari Electric Technology Co., Ltd. Two-level latch mechanism for operation mechanism of circuit breaker

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