CN202513105U - Current-limiting fuse with overcurrent and short circuit protection - Google Patents
Current-limiting fuse with overcurrent and short circuit protection Download PDFInfo
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- CN202513105U CN202513105U CN2012201378485U CN201220137848U CN202513105U CN 202513105 U CN202513105 U CN 202513105U CN 2012201378485 U CN2012201378485 U CN 2012201378485U CN 201220137848 U CN201220137848 U CN 201220137848U CN 202513105 U CN202513105 U CN 202513105U
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Abstract
The utility model discloses a current-limiting fuse, which is used for limiting circuit overcurrent and performing short circuit protection and active control. The current-limiting fuse comprises an insulating shell, a manual switch, a first electromagnetic circuit, a second electromagnetic circuit, a third electromagnetic circuit and a bridge contact system. The manual switch, the first electromagnetic circuit, the second electromagnetic circuit, the third electromagnetic circuit and the bridge contact system are arranged on the insulating shell, a coil of the first electromagnetic circuit adopts a current coil and can sense, compare and respond to incoming current, the current coil is connected with the bridge contact system, a load and a power supply to form a circuit, the circuit can be rapidly cut off in the case of overcurrent or short circuit to protect the load in the circuit, normal operation of the circuit can be restored after contacts are connected via an active control device on the fuse, that is, the connection or disconnection of the contact system can be controlled via application of pulses by the second electromagnetic circuit or the third electromagnetic circuit or via using the manual switch, the state of connection or disconnection can be maintained, and no energy is needed. Thus, the utility model provides a current-limiting fuse with integration of the overcurrent and short circuit safety protection and the active control function.
Description
Affiliated technical field
The utility model relates to a kind of current limliting protector.Especially to exchange or DC current values keeps the current limliting protector of the state that is switched on or switched off as input reference quantity, no energy consumption, furtherly: the function with active or Passive Control can adopt hand-reset.
Background technology
In all kinds of circuit; The disposable elements that the most often uses as overcurrent protection is the electric current fuse that adopts metal wire material fusing mode, is the overcurrent protection switch that has a bimetal leaf as the reusable device of overcurrent protection and have the air switch that heat is threaded off; The principle of these three kinds of overcurrent protective devices is to be utilized thermal effect that electric current produces or realizes defencive function according to the operating chacteristics of I2RT.Wherein: after overcurrent fusing takes place when using the electric current fuse; The electric current fuse that must more renew just can work on; This has increased maintenance cost undoubtedly; Not reusable, its manner of execution is a passive mode, promptly has only when the electric current in the circuit reaches the operating current value of electric current fuse just to fuse; Bimetal leaf overcurrent protection switch is to belong to temporary transient overcurrent protective device, when electric current reduces, will recover and connect circuit automatically, if this moment, fault was not got rid of, also possibly cause circuit to go wrong; The air switch of heat dropout action can be reused, though when electric current reduces, can not return to on-state voluntarily, does not have active control function, can only manually recover.
The current limliting protector that the utility model provides adopts electromagnetic induction principle, through electric current in the current coil response circuit and then the action of promotion contact, realizes overcurrent protection function.Specify for: when the electric current in the circuit reaches setting (operating value); The electromagnetic system of current drives can (several milliseconds) make the contact action and convert off-state is exempted overcurrent or short circuit with other parts in the protective circuit influence in the extremely short time; Thereby realize the function (passive manner of execution) of overcurrent and short-circuit protection; And when the electric current in the circuit during less than the electric current setting of protector, the contact of said current limliting protector can be in on-state for a long time and can not have energy consumption and keep; After circuitry cuts, also need not to consume energy just can also can provide a kind of active control function at the current limliting protector that dissengaged positions the utility model provides by holding contact; Promptly no matter whether the electric current in the circuit reaches operating value, all can convert dissengaged positions into by connection through manual mode or through applying little electric current (or pulse) ACTIVE CONTROL contact.This moment, the contact of current limliting protector can't automatically restore to conducting state, has realized the current limliting insurance function of the utility model when electric current in the circuit during less than setting.
In the time of after fault is excluded, need restarting; Can be through manually or start automatic recovery device and just can make the contact recover on-state, but just operate as normal control and overcome the deficiency of the not re-usable defective of electric current fuse and other current-limiting apparatus again of circuit.The contact of said current limliting protector all need not power consumption during the keeping for a long time of conducting or dissengaged positions, be the bistable state form, so energy-saving and environmental protection.
Therefore the utility model has been realized passive overcurrent and short-circuit protection, ACTIVE CONTROL and reusable function, energy-saving and environmental protection.
The utility model content
For overcome the not reproducible use of electric current fuse, have only passive manner of execution, the action back is irrecoverable and the defective of other types overcurrent protective device; The utility model provides a kind of current limliting protector, realized reusable, can be initiatively or the function of Passive Control and energy-saving and environmental protection.
The utility model solves the scheme that its technical problem adopted: the electromagnetic system that adopts a kind of induction by current; First electromagnetic circuit that said electromagnetic system is provided with coil, iron core, yoke, armature and the extension spring that between yoke and armature, is provided with constitutes is as induction by current, comparison and the responding device of circuit, and said electromagnetic system also is provided with a permanent magnetic circuit that contains permanent magnet; For alternating current circuit, said electromagnetic system also be provided with short-circuited conducting sleeve be used for preventing said armature take place shake exchange the vibrationproof magnet steel with guarantee said armature movement steadily; Said current limliting protector adopts the switch on and off switch of bridging contact system as circuit; Said bridging contact system has and switches on and off two kinds of operating states; When the current value of circuit reaches the operating value of said current limliting protector; Said first electromagnetic circuit and permanent magnetic circuit are superimposed upon the suction that produces on the said armature counter-force greater than said extension spring; Accelerated motion takes place with closed first electromagnetic circuit in said armature, and promotes said bridging contact system through the collets that on said armature, are provided with and cut off circuit, behind closed first electromagnetic circuit of said armature by permanent magnet holding contact system in off-state.Overcurrent can make the contact be transformed into on-state through the active control device that is provided with on the said current limliting protector after eliminating, and it is normal that circuit recovers.
The utility model is provided with a kind of hand switch, and at any time the manual switch contact is for being switched on or switched off state, i.e. manual positive action mode; , the contact is in on-state when converting on-state into by said extension spring holding contact.
The utility model is provided with another electromagnetic circuit and is called second electromagnetic circuit; The suction that during said second electromagnetic circuit energising (or pulse) and permanent magnetic circuit stack back produces on said armature is greater than the counter-force of said extension spring; Accelerated motion takes place with closed magnetic circuit in said armature, and promotes the conversion of said bridging contact system through said collets, makes the bridging contact system transfer disconnection to by connection; Be automatic positive action mode, keep off-state by permanent magnetic circuit behind the said armature closed magnetic circuit.
The utility model also is provided with another electromagnetic circuit and is called the 3rd electromagnetic circuit; On said armature, produce the suction of the counter-force stack of suction and said extension spring during said the 3rd electromagnetic circuit energising (or pulse) greater than permanent magnetic circuit; Action takes place with closed the 3rd electromagnetic circuit in said armature; And promote said bridging contact system through said collets and convert connection into by disconnection, be in on-state by said extension spring holding contact behind closed the 3rd electromagnetic circuit of said armature.
The utility model is in the alternating current circuit; Can in said first electromagnetic system, produce 2 frequency multiplication pulsating fields; Thereby cause said armature that shake and closed problem of unstable take place when action; Pole-shoe face at the said first electromagnetic circuit iron core is provided with short-circuit ring structure, particularly also is provided with in closing of contact position to exchange the vibrationproof magnet steel, has overcome armature described in the alternating current circuit shake and closed problem of unstable take place when action.
The concrete technical scheme of the utility model is a kind of current limliting protector with overcurrent and short-circuit protection; Comprise the first electromagnetic circuit coil (1); The bridging contact system; The current mode coil (1) that it is characterized in that being provided with in the said current limliting protector and bridging contact system are for being connected in series and being connected with electric power loop with load C; One end of the described first electromagnetic circuit coil (1) is electrically connected with an end of power supply; The other end of electromagnetic circuit coil (1) is electrically connected with left movable contact spring (15) in the described bridging contact system, and is electrically connected on the end of load C the other end of the other end electric connection of power supply of load C through left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13) and right movable contact spring (12).
Described a kind of current limliting protector with overcurrent and short-circuit protection; It is characterized in that: the electromagnetic system that is provided with a current mode; Comprise: the first electromagnetic circuit coil (1), the first electromagnetic circuit iron core (3), the first electromagnetic circuit yoke (4), armature (6) and be connected in the extension spring (5) between the first electromagnetic circuit yoke (4) and the armature (6); In insulation crust (22), be provided with permanent magnet (11); Said current mode electromagnetic system can respond to according to the current value that flows into the first electromagnetic circuit coil (1), relatively and response, armature when reaching setting (6) action and by permanent magnet (11) hold mode.
Described a kind of current limliting protector with overcurrent and short-circuit protection; It is characterized in that: the pole-shoe face of the first electromagnetic circuit iron core (3) is provided with short-circuited conducting sleeve (7) described in the alternating current circuit; The length direction center of said static contact spring piece (18) is provided with vibrationproof magnet steel (23), vibrationproof magnet steel (23) and all fixed contacts and static contact spring piece mutually insulated.
Described current limliting protector; It is characterized in that: described bridging contact system comprises left movable contact spring (15), left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13), right movable contact spring (12), collets (8) and armature (6); Armature (6) is fitted together with collets (8), right movable contact spring (12) and left movable contact spring (15) riveting and is insulated from each other; Being fitted together with right moving contact (13) and left moving contact (14) riveting respectively of right movable contact spring (12) and left movable contact spring (15); The relevant position, opposite of right moving contact (13) and left moving contact (14) is respectively arranged with right fixed contact (17) and left fixed contact (16); Right fixed contact (17) and left fixed contact (16) riveting respectively are contained on the static contact spring piece (18), and said bridging contact system switches on and off two states.
Said a kind of current limliting protector with overcurrent and short-circuit protection is characterized in that: also be provided with hand switch, conversion bridge-type contact system is to being switched on or switched off state.
The another technical scheme of the utility model is; Comprise: be provided with the first electromagnetic circuit coil (1); One end of the first electromagnetic circuit coil (1) is electrically connected with an end of power supply; The other end of electromagnetic circuit coil (1) is electrically connected with left movable contact spring (15) in the bridging contact system; And be electrically connected on the end of load C through left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13) and right movable contact spring (12), the other end of the other end electric connection of power supply of load C is characterized in that: the current mode coil 1 that is provided with in the said current limliting protector and bridging contact system are for being connected in series and being connected with electric power loop with load C.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: the electromagnetic system of set current mode; Comprise: the first electromagnetic circuit coil (1), the first electromagnetic circuit iron core (3), the first electromagnetic circuit yoke (4), armature (6) and be connected in the extension spring (5) between the first electromagnetic circuit yoke (4) and the armature (6); Said current mode electromagnetic system is provided with permanent magnet (11); Said current mode electromagnetic system is responded to, relatively and response according to the current value that flows into the first electromagnetic circuit coil (1), armature when meeting or exceeding setting (6) action and by permanent magnet (11) hold mode.
Said can be manually and the current limliting protector of conversion automatically; It is characterized in that: in alternating current circuit; The pole-shoe face of the said first electromagnetic circuit iron core (3) is provided with short-circuited conducting sleeve (7); The length direction center of said static contact spring piece (18) is provided with vibrationproof magnet steel (23), vibrationproof magnet steel (23) and all fixed contacts and static contact spring piece mutually insulated.
Said can be manually and the current limliting protector of conversion automatically; It is characterized in that: described bridging contact system comprises left movable contact spring (15), left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13), right movable contact spring (12), collets (8) and armature (6); Armature (6) is fitted together with collets (8), right movable contact spring (12) and left movable contact spring (15) riveting and is insulated from each other; Being fitted together with right moving contact (13) and left moving contact (14) riveting respectively of right movable contact spring (12) and left movable contact spring (15); The relevant position of right moving contact (13) and left moving contact (14) is respectively arranged with right fixed contact (17) and left fixed contact (16); Right fixed contact (17) and left fixed contact (16) riveting respectively are contained on the static contact spring piece (18), and said bridging contact system switches on and off two states.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: also be provided with hand switch, manual switch bridging contact system is to being switched on or switched off state.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: on the said first electromagnetic circuit iron core (3), also be provided with the second electromagnetic circuit coil (2); The second electromagnetic circuit coil (2) is used for auto-action and is broken circuit by pulsed drive.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: also be provided with the 3rd electromagnetic circuit; Comprise: the 3rd electromagnetic circuit coil (19); The 3rd electromagnetic circuit iron core (20) and the 3rd electromagnetic circuit yoke (21), the 3rd electromagnetic circuit coil (19) is used for auto-action and is connected circuit by pulsed drive.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: place also shared armature (6) about said the 3rd electromagnetic circuit and first electromagnetic circuit with closed magnetic circuit.
Described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: on said the 3rd electromagnetic circuit and first electromagnetic circuit held also shared armature (6) with closed magnetic circuit.
Another technical scheme of the utility model is: a kind of direct current current-limiting protector with control coil; It is characterized in that: comprise an electromagnetic system; It comprises current coil (36), direct current iron core (40), direct current yoke (41), direct current armature (42); The line footpath and the number of turn of current coil (36) are that the cut-off current size of controlling is as required chosen; Also be provided with the rotating insulated mechanism (43) that is used for fixing direct current armature (42), rotating insulated mechanism (43) is provided with spherical insulation push rod (44), and spherical insulation push rod (44) promotes insulation push jack (45) move left and right; To the insulate move left and right of push jack (45) of insulation push jack (45) passes to the movable contact spring (46) that riveting has moving contact (47), and the position, opposite of moving contact (47) is provided with the static contact spring piece (49) that fixed contact (48) have been adorned in riveting; Also be provided with control coil (37), beginning, the end of control coil (37) are drawn separately.
Described a kind of direct current current-limiting protector with control coil; It is characterized in that: the positive pole of DC power supply (30) is connected with an end of static contact spring piece (49); The fixed contact (48) of riveting on the other end of static contact spring piece (49) keeps in touch with moving contact (47) or keeps breaking off; The other end of movable contact spring (46) is fixed in shell (50) and upward and with the top (34) of current coil (36) is connected; Current coil terminal (35) is connected through an end of the current coil leading foot (32) on being arranged on the inner connector (33) of shell (50) and being fixed in shell (50); The other end of current coil leading foot (32) is connected with an end of load (31), and the other end of load (31) is connected with the negative pole of DC power supply (31), forms circuit loop.
The beneficial effect of the utility model is, can be used as the overcurrent protective device of circuit, and said overcurrent protective device can be repeatedly used, but need not after the action power consumption just holding contact be switched on or switched off the position; Can adopt the positive action mode to control the state of contact easily, the positive action mode can be manual or automatic mode.
Description of drawings
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and respective embodiments the utility model is further specified.Among the figure: 1. the first electromagnetic circuit coil, the 2. second electromagnetic circuit coil, the 3. first electromagnetic circuit iron core, the 4. first electromagnetic circuit yoke, 5. extension spring, 6. armature, 7. short-circuited conducting sleeve; 8. collets, 9. hand switch, 10. rotating shaft, 11. permanent magnets, 12. right movable contact springs, 13. right moving contacts, 14. left moving contacts; 15. left movable contact spring, 16. left fixed contacts, 17. right fixed contacts, 18. static contact spring pieces, 19. the 3rd electromagnetic circuit coils, 20. the 3rd electromagnetic circuit iron cores; 21. the 3rd electromagnetic circuit yoke, 22. shells, 23. exchange vibrationproof magnet, 30. DC power supplys, 31. loads, 32. current coil leading foots; 33. connecting line, 34. current coil tops, 35. current coils are terminal, 36. current coils, 37. control coils, 38. control coils are terminal; 39. control coil top, 40. direct current iron cores, 41. direct current yokes, 42. direct current armature, 43 rotating insulated mechanisms, 44. spherical insulation push rods; 45. the insulation push jack, 46. movable contact springs, 47. moving contacts, 48. fixed contacts, 49. static contact spring pieces, 50. insulation crusts.
Fig. 1 is a kind of embodiment 1 principle schematic of the utility model
Fig. 2 is the structural representation that a kind of the utility model can manually be controlled embodiment 1
Fig. 3 is that a kind of the utility model can manual control principle sketch map
Fig. 4 is that a kind of the utility model can manual control embodiment 2 structural representations
Fig. 5 is that a kind of the utility model can manual control embodiment 3 structural representations
Fig. 6 is a kind of high direct voltage type embodiment 4 on-state theory structure sketch mapes of the utility model
Fig. 7 is a kind of high direct voltage type embodiment 4 off-state theory structure sketch mapes of the utility model
Embodiment
In Fig. 1; Circuit is in normal operating conditions following time; Contact system is an on-state; Electric current flows into an end of the first electromagnetic circuit coil 1 from an end A of power supply, and the other end of the first electromagnetic circuit coil 1 is electrically connected on the left movable contact spring 15, and is electrically connected to the end of circuit load C through the bridging contact system that is made up of left movable contact spring 15, left moving contact 14, left fixed contact 16, static contact spring piece 18, right fixed contact 17, right moving contact 13 and right movable contact spring 12; The other end of load C connects the other end B of power supply, forms the loop.
The line footpath and the number of turn of the first electromagnetic circuit coil 1 are that the cut-off current size of controlling is as required chosen, and the bridging contact system can guarantee the reliability of the big electric current of break-make, and fixed contact adopts flexible contact device effectively to reduce break-make electric arc.
In Fig. 2; The radial center of the first electromagnetic circuit coil 1 is provided with the first electromagnetic circuit iron core 3; One end of the said first electromagnetic circuit iron core 3 becomes the pole-shoe face of the first electromagnetic circuit iron core 3 along the working face position that extends axially the first electromagnetic circuit armature 6 of the first electromagnetic circuit coil 1; For alternating current circuit; Also be provided with short-circuited conducting sleeve 7 on the pole-shoe face of the said first electromagnetic circuit iron core 3; The other end of the first electromagnetic circuit iron core 3 extends axially in the hole that the first electromagnetic circuit yoke 4 is provided with and is riveted together along the first electromagnetic circuit coil 1; The first electromagnetic circuit yoke 4 is provided with between the upwardly extending hitch gear that upwardly extending hitch gear and armature 6 is provided with extension spring 5 is installed; Therefore the one side of armature 6 can be close to one side of the cross section of the first electromagnetic circuit yoke 4, and the other end of armature 6 extends through the pole shoe position of the pole shoe of the first electromagnetic circuit iron core 3 to permanent magnet 11 downwards, one side armature 6 is fulcrum and extension spring 5, the first electromagnetic circuit iron core 3 and the first electromagnetic circuit coil, 1 formation clapper-type electromagnetic structure with the cross section of the first electromagnetic circuit yoke 4; Armature 6 is provided with collets 8; On the collets 8 respectively riveting right movable contact spring 12 and left movable contact spring 15 are housed; Insulated from each other and while and armature 6 insulation between right movable contact spring 12 and the left movable contact spring 15; Collets 8 also are provided with chondritic and are installed in the hand switch 9; Hand switch 9 is installed in through rotating shaft 10 on the relevant position of shell 22, can drive the spot wobble that armature is constituted around the first electromagnetic circuit yoke, 4 cross sections on one side through collets 8 during hand switch 9 actions, thereby drives right movable contact spring 12 and left movable contact spring 15 swings; The other end of right movable contact spring 12 and left movable contact spring 15 is porose with moving right contact 13 of riveting dress and left moving contact 14 to extending below and being provided with respectively; The relevant position, opposite of right moving contact 13 and left moving contact 14 is respectively arranged with right fixed contact 17 and left fixed contact 16, and right fixed contact 17 and left fixed contact 16 riveting respectively are contained on the static contact spring piece 18, for alternating current circuit; The length direction center of static contact spring piece 18 also is provided with vibrationproof magnet steel 23, vibrationproof magnet steel 23 and all fixed contacts and static contact spring piece mutually insulated; One end of the first electromagnetic circuit coil 1 and an end of right movable contact spring 12 are welded with lead respectively, the other end of lead be arranged on shell 22 on and outward extending leading-out terminal be connected with as the usefulness that is connected with external circuit.Said mechanism is assembled in the relevant position of insulating material housing 22.
In Fig. 3; Circuit is in normal operating conditions following time; Contact system is an on-state; Electric current flows into an end of the first electromagnetic circuit coil 1 from an end A of power supply, and the other end of the first electromagnetic circuit coil 1 is electrically connected on the left movable contact spring 15, and is electrically connected to the end of circuit load C through the bridging contact system that is made up of left movable contact spring 15, left moving contact 14, left fixed contact 16, static contact spring piece 18, right fixed contact 17, right moving contact 13 and right movable contact spring 12; The other end of load C connects the other end B of power supply, forms the loop.
In Fig. 3; The second electromagnetic circuit coil 2 also is set on the first electromagnetic circuit iron core 3; The said second electromagnetic circuit coil 2 adopts the voltage-type coil; The second electromagnetic circuit coil 2 and the first electromagnetic circuit iron core 3, the first electromagnetic circuit yoke 4 and armature 6 constitute a closed magnetic circuit, and the second electromagnetic circuit coil 2 can adopt pulsed drive.Be provided with the 3rd electromagnetic circuit coil 19, the 3rd electromagnetic circuit iron core 20 and the 3rd electromagnetic circuit yoke 21 and constitute another closed magnetic circuits by upper/lower positions on the opposite of the second electromagnetic circuit coil 2 with armature 6; Said the 3rd electromagnetic circuit coil 19 adopts the voltage-type coil; The 3rd electromagnetic circuit coil 19 can adopt pulsed drive; The two ends of the second electromagnetic circuit coil 2 and the 3rd electromagnetic circuit coil 20 are drawn respectively and are connected the pulse power; Bridging contact system open circuit during the second electromagnetic circuit coil, 2 energized, the bridging contact system connects circuit during the 3rd electromagnetic circuit coil 20 energized, therefore realizes automatic positive action control.
In Fig. 4; The radial center of the first electromagnetic circuit coil 1 is provided with the first electromagnetic circuit iron core 3; One end of the said first electromagnetic circuit iron core 3 becomes the pole-shoe face of the first electromagnetic circuit iron core 3 along the working face position that extends axially the first electromagnetic circuit armature 6 of the first electromagnetic circuit coil 1; For alternating current circuit; Also be provided with short-circuited conducting sleeve 7 on the pole-shoe face of the said first electromagnetic circuit iron core 3; The other end of the first electromagnetic circuit iron core 3 extends axially in the hole that the first electromagnetic circuit yoke 4 is provided with and is riveted together along the first electromagnetic circuit coil 1; The first electromagnetic circuit yoke 4 is provided with between the upwardly extending hitch gear that upwardly extending hitch gear and armature 6 is provided with extension spring 5 is installed; Therefore the one side of armature 6 can be close to one side of the cross section of the first electromagnetic circuit yoke 4, and the other end of armature 6 extends through the pole shoe position of the pole shoe of the first electromagnetic circuit iron core 3 to permanent magnet 11 downwards, one side armature 6 is fulcrum and extension spring 5, the first electromagnetic circuit iron core 3 and the first electromagnetic circuit coil, 1 formation clapper-type electromagnetic structure with the cross section of the first electromagnetic circuit yoke 4; Armature 6 is provided with collets 8; On the collets 8 respectively riveting right movable contact spring 12 and left movable contact spring 15 are housed; Insulated from each other and while and armature 6 insulation between right movable contact spring 12 and the left movable contact spring 15; Collets 8 also are provided with chondritic and are installed in the hand switch 9; Hand switch 9 is installed in through rotating shaft 10 on the relevant position of shell 22, can drive the spot wobble that armature is constituted around the first electromagnetic circuit yoke, 4 cross sections on one side through collets 8 during hand switch 9 actions, thereby drives right movable contact spring 12 and left movable contact spring 15 swings; The other end of right movable contact spring 12 and left movable contact spring 15 is porose with moving right contact 13 of riveting dress and left moving contact 14 to extending below and being provided with respectively; The relevant position, opposite of right moving contact 13 and left moving contact 14 is respectively arranged with right fixed contact 17 and left fixed contact 16, and right fixed contact 17 and left fixed contact 16 riveting respectively are contained on the static contact spring piece 18, for alternating current circuit; The length direction center of static contact spring piece 18 also is provided with vibrationproof magnet steel 23, vibrationproof magnet steel 23 and all fixed contacts and static contact spring piece mutually insulated; One end of the first electromagnetic circuit coil 1 and an end of right movable contact spring 12 are welded with lead respectively, the other end of lead be arranged on shell 22 on and outward extending leading-out terminal be connected with as the usefulness that is connected with external circuit.Said mechanism is assembled in the relevant position of insulating material housing 22.
In Fig. 4; The second electromagnetic circuit coil 2 also is set on the first electromagnetic circuit iron core 3; The said second electromagnetic circuit coil 2 adopts the voltage-type coil; The second electromagnetic circuit coil 2 and the first electromagnetic circuit iron core 3, the first electromagnetic circuit yoke 4 and armature 6 constitute a closed magnetic circuit, and the second electromagnetic circuit coil 2 can adopt pulsed drive.Be provided with the 3rd electromagnetic circuit coil 19, the 3rd electromagnetic circuit iron core 20 and the 3rd electromagnetic circuit yoke 21 and constitute another closed magnetic circuits by upper/lower positions on the opposite of the second electromagnetic circuit coil 2 with armature 6; The other end of armature 6 extends through the pole shoe of pole shoe and permanent magnet 11 of the first electromagnetic circuit iron core 3 downwards up to the pole shoe position of the 3rd electromagnetic circuit iron core 20; Said the 3rd electromagnetic circuit coil 19 adopts the voltage-type coil; The 3rd electromagnetic circuit coil 19 can adopt pulsed drive; The two ends of the second electromagnetic circuit coil 2 and the 3rd electromagnetic circuit coil 20 are drawn respectively and are connected the pulse power; Bridging contact system open circuit during the second electromagnetic circuit coil, 2 energized, the bridging contact system connects circuit during the 3rd electromagnetic circuit coil 20 energized, therefore realizes automatic positive action control.
In Fig. 5; The radial center of the first electromagnetic circuit coil 1 is provided with the first electromagnetic circuit iron core 3; One end of the said first electromagnetic circuit iron core 3 becomes the pole-shoe face of the first electromagnetic circuit iron core 3 along the working face position that extends axially the first electromagnetic circuit armature 6 of the first electromagnetic circuit coil 1; For alternating current circuit; Also be provided with short-circuited conducting sleeve 7 on the pole-shoe face of the said first electromagnetic circuit iron core 3; The other end of the first electromagnetic circuit iron core 3 extends axially in the hole that the first electromagnetic circuit yoke 4 is provided with and is riveted together along the first electromagnetic circuit coil 1; The first electromagnetic circuit yoke 4 is provided with between the upwardly extending hitch gear that upwardly extending hitch gear and armature 6 is provided with extension spring 5 is installed; Therefore the one side of armature 6 can be close to one side of the cross section of the first electromagnetic circuit yoke 4, and the other end of armature 6 extends through the pole shoe position of the pole shoe of the first electromagnetic circuit iron core 3 to permanent magnet 11 downwards, one side armature 6 is fulcrum and extension spring 5, the first electromagnetic circuit iron core 3 and the first electromagnetic circuit coil, 1 formation clapper-type electromagnetic structure with the cross section of the first electromagnetic circuit yoke 4; Armature 6 is provided with collets 8; On the collets 8 respectively riveting right movable contact spring 12 and left movable contact spring 15 are housed; Insulated from each other and while and armature 6 insulation between right movable contact spring 12 and the left movable contact spring 15; Collets 8 also are provided with chondritic and are installed in the hand switch 9; Hand switch 9 is installed in through rotating shaft 10 on the relevant position of shell 22, can drive the spot wobble that armature is constituted around the first electromagnetic circuit yoke, 4 cross sections on one side through collets 8 during hand switch 9 actions, thereby drives right movable contact spring 12 and left movable contact spring 15 swings; The other end of right movable contact spring 12 and left movable contact spring 15 is porose with moving right contact 13 of riveting dress and left moving contact 14 to extending below and being provided with respectively; The relevant position, opposite of right moving contact 13 and left moving contact 14 is respectively arranged with right fixed contact 17 and left fixed contact 16, and right fixed contact 17 and left fixed contact 16 riveting respectively are contained on the static contact spring piece 18, for alternating current circuit; The length direction center of static contact spring piece 18 also is provided with vibrationproof magnet steel 23, vibrationproof magnet steel 23 and all fixed contacts and static contact spring piece mutually insulated; One end of the first electromagnetic circuit coil 1 and an end of right movable contact spring 12 are welded with lead respectively, the other end of lead be arranged on shell 22 on and outward extending leading-out terminal be connected with as the usefulness that is connected with external circuit.Said mechanism is assembled in the relevant position of insulating material housing 22.
In Fig. 5, the first electromagnetic circuit iron core 3 be provided with the second electromagnetic circuit coil 2 and and the upwardly extending hitch gear that is provided with of the upwardly extending hitch gear that is provided with of the upper end of the first electromagnetic circuit iron core 3, the first electromagnetic circuit yoke 4, armature 6 and the first electromagnetic circuit yoke 4 and armature 6 between closed magnetic circuit of extension spring 5 formations of installing.
In Fig. 5, be provided with the 3rd electromagnetic circuit coil 19, the 3rd electromagnetic circuit iron core 20 and the 3rd electromagnetic circuit yoke 21 in the top position of the second electromagnetic circuit coil 2 and constitute another closed magnetic circuits with armature 6.
Fig. 6 is a kind of direct current current-limiting protector embodiment with control coil; In insulation crust 50, be provided with the electromagnetic system of forming by the permanent-magnet steel between current coil 36, direct current iron core 40, direct current yoke 41, direct current armature 42 and direct current armature 42 each pole shoe; In insulation crust 50, also be provided with the rotating insulated mechanism 43 that is used for fixing direct current armature 42; Rotating insulated mechanism 43 is provided with spherical insulation push rod 44; Spherical insulation push rod 44 can promote to insulate push jack 45 move left and right and pass to the movable contact spring 46 that riveting has moving contact 47 are broken off contact system or are connected, and the position, opposite of moving contact 47 is provided with the static contact spring piece 49 that fixed contact 48 has been adorned in riveting; Insulation crust 50 also is provided with control coil 37, and the beginning of control coil 37, end can be drawn separately.
In Fig. 6; Circuit is in normal operating conditions following time; Electric current in the circuit does not reach the operating value of current coil 36; Under the effect of permanent-magnet steel and movable contact spring 46 precompressions; Fixedly the insulation rotating mechanism 43 of direct current armature 42 left side that clockwise rotates pole shoe and direct current yoke 41 under the left side that makes direct current armature 42 go up pole-shoe face down the upper right pole shoe of adhesive, direct current armature 42 with the adhesive of the right upper pole boot upper of direct current yoke 41 and by the permanent-magnet steel hold mode, drive spherical insulation push rod 44 simultaneously to move right, the transmission through insulation push jack 45 makes moving contact 47 and fixed contact 48 connections.At this moment; The positive pole of DC power supply 30 is connected with an end of static contact spring piece 49; The fixed contact 48 of riveting on the other end of static contact spring piece 49 keeps on-state with moving contact 47; The other end of movable contact spring 46 is fixed on the shell 50 and with the top 34 of current coil 36 and is connected, and current coil terminal 35 is connected (connector 33 shown in Figure 6 is the principle signal) through being arranged on shell 50 inner connectors 33 with an end of current coil leading foot 32, and the other end of current coil leading foot 32 is connected with an end of load 31; The other end of load 31 is connected with the negative pole of DC power supply 31, the circuit loop when forming operate as normal.
In Fig. 7; When circuit is in overcurrent or short circuit; Electric current in the circuit reaches the operating value of current coil 36; The electromagnetic attraction that current coil 36 produces is enough to overcome the counter-force that permanent-magnet steel and movable contact spring 46 precompressions are produced, and causes fixedly that the insulation rotating mechanism 43 of direct current armature 42 rotates counterclockwise, make direct current armature 42 upper left pole shoe and direct current yoke 41 upper left pole-shoe face adhesive, direct current armature 42 bottom right pole shoe and direct current yoke 41 the bottom right pole-shoe face adhesive and by the permanent-magnet steel hold mode; Driving spherical insulation push rod 44 simultaneously is moved to the left; Transmission through insulation push jack 45 also is moved to the left movable contact spring 46 and drives moving contact 47 breaks off with fixed contact 48, and therefore circuit loop is cut off, and plays the influence that overcurrent or short circuit are avoided in protective circuit load 31.The line footpath and the number of turn of current coil 36 are that the cut-off current size of controlling is as required chosen.
In Fig. 6 and Fig. 7; Also be provided with control coil 37; As long as between the top 39 of control coil 37 and terminal 38, apply the small voltage pulse, the electromagnetic attraction that control coil 37 is produced just can overcome counter-force make direct current armature 42 is housed the insulation rotating mechanism clockwise or be rotated counterclockwise, and drive spherical insulation push rod 44 and move to the left or to the right; Transmission through insulation push jack 45 is broken off or connection moving contact 47 and fixed contact 48; Through changing the polarity that is connected of control coil top 39 and end 38, just controllable brake contact 47 is disconnection or on-state with fixed contact 48, and by permanent-magnet steel holding contact state.
Claims (16)
1. current limliting protector with overcurrent and short-circuit protection; Comprise the first electromagnetic circuit coil (1); The bridging contact system; The current mode coil (1) that it is characterized in that being provided with in the said current limliting protector and bridging contact system are for being connected in series and being connected with electric power loop with load C; One end of the described first electromagnetic circuit coil (1) is electrically connected with an end of power supply; The other end of electromagnetic circuit coil (1) is electrically connected with left movable contact spring (15) in the described bridging contact system, and is electrically connected on the end of load C the other end of the other end electric connection of power supply of load C through left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13) and right movable contact spring (12).
2. a kind of current limliting protector according to claim 1 with overcurrent and short-circuit protection; It is characterized in that: the electromagnetic system that is provided with a current mode; Comprise: the first electromagnetic circuit coil (1), the first electromagnetic circuit iron core (3), the first electromagnetic circuit yoke (4), armature (6) and be connected in the extension spring (5) between the first electromagnetic circuit yoke (4) and the armature (6); In insulation crust (22), be provided with permanent magnet (11); Said current mode electromagnetic system can respond to according to the current value that flows into the first electromagnetic circuit coil (1), relatively and response, armature when reaching setting (6) action and by permanent magnet (11) hold mode.
3. according to a kind of current limliting protector of claim 1 with overcurrent and short-circuit protection; It is characterized in that: in alternating current circuit; The pole-shoe face of the said first electromagnetic circuit iron core (3) is provided with short-circuited conducting sleeve (7); The length direction center of said static contact spring piece (18) is provided with vibrationproof magnet steel (23), vibrationproof magnet steel (23) and all fixed contacts and static contact spring piece mutually insulated.
4. current limliting protector according to claim 1; It is characterized in that: described bridging contact system comprises left movable contact spring (15), left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13), right movable contact spring (12), collets (8) and armature (6); Armature (6) is fitted together with collets (8), right movable contact spring (12) and left movable contact spring (15) riveting and is insulated from each other; Being fitted together with right moving contact (13) and left moving contact (14) riveting respectively of right movable contact spring (12) and left movable contact spring (15); The relevant position, opposite of right moving contact (13) and left moving contact (14) is respectively arranged with right fixed contact (17) and left fixed contact (16); Right fixed contact (17) and left fixed contact (16) riveting respectively are contained on the static contact spring piece (18), and said bridging contact system switches on and off two states.
5. according to the said a kind of current limliting protector with overcurrent and short-circuit protection of claim 1, it is characterized in that: also be provided with hand switch, conversion bridge-type contact system is to being switched on or switched off state.
One kind have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; Comprise: be provided with the first electromagnetic circuit coil (1); One end of the first electromagnetic circuit coil (1) is electrically connected with an end of power supply; The other end of electromagnetic circuit coil (1) is electrically connected with left movable contact spring (15) in the bridging contact system; And process left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13) and right movable contact spring (12) are electrically connected on the end of load C; The other end of the other end electric connection of power supply of load C is characterized in that: the current mode coil 1 that is provided with in the said current limliting protector and bridging contact system are for being connected in series and being connected with electric power loop with load C.
7. according to claim 6 a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: the electromagnetic system of set current mode; Comprise: the first electromagnetic circuit coil (1), the first electromagnetic circuit iron core (3), the first electromagnetic circuit yoke (4), armature (6) and be connected in the extension spring (5) between the first electromagnetic circuit yoke (4) and the armature (6); Said current mode electromagnetic system is provided with permanent magnet (11); Said current mode electromagnetic system is responded to, relatively and response according to the current value that flows into the first electromagnetic circuit coil (1), armature when meeting or exceeding setting (6) action and by permanent magnet (11) hold mode.
According to claim 6 is said can be manually and the current limliting protector of conversion automatically; It is characterized in that: in alternating current circuit; The pole-shoe face of the said first electromagnetic circuit iron core (3) is provided with short-circuited conducting sleeve (7); The length direction center of said static contact spring piece (18) is provided with vibrationproof magnet steel (23), vibrationproof magnet steel (23) and all fixed contacts and static contact spring piece mutually insulated.
According to claim 6 is said can be manually and the current limliting protector of conversion automatically; It is characterized in that: described bridging contact system comprises left movable contact spring (15), left moving contact (14), left fixed contact (16), static contact spring piece (18), right fixed contact (17), right moving contact (13), right movable contact spring (12), collets (8) and armature (6); Armature (6) is fitted together with collets (8), right movable contact spring (12) and left movable contact spring (15) riveting and is insulated from each other; Being fitted together with right moving contact (13) and left moving contact (14) riveting respectively of right movable contact spring (12) and left movable contact spring (15); The relevant position of right moving contact (13) and left moving contact (14) is respectively arranged with right fixed contact (17) and left fixed contact (16); Right fixed contact (17) and left fixed contact (16) riveting respectively are contained on the static contact spring piece (18), and said bridging contact system switches on and off two states.
10. according to claim 6 a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: also be provided with hand switch, manual switch bridging contact system is to being switched on or switched off state.
11. according to claim 6 a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: on the said first electromagnetic circuit iron core (3), also be provided with the second electromagnetic circuit coil (2); The second electromagnetic circuit coil (2) is used for auto-action and is broken circuit by pulsed drive.
12. according to claim 7 or 12 described a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically; It is characterized in that: also be provided with the 3rd electromagnetic circuit; Comprise: the 3rd electromagnetic circuit coil (19); The 3rd electromagnetic circuit iron core (20) and the 3rd electromagnetic circuit yoke (21), the 3rd electromagnetic circuit coil (19) is used for auto-action and is connected circuit by pulsed drive.
13. according to claim 13 a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: place also shared armature (6) about said the 3rd electromagnetic circuit and first electromagnetic circuit with closed magnetic circuit.
14. according to claim 13 a kind of have overcurrent and a short-circuit protection can be manually and the current limliting protector of conversion automatically, it is characterized in that: on said the 3rd electromagnetic circuit and first electromagnetic circuit held also shared armature (6) with closed magnetic circuit.
15. direct current current-limiting protector with control coil; It is characterized in that: comprise an electromagnetic system; It comprises current coil (36), direct current iron core (40), direct current yoke (41), direct current armature (42); The line footpath and the number of turn of current coil (36) are that the cut-off current size of controlling is as required chosen; Also be provided with the rotating insulated mechanism (43) that is used for fixing direct current armature (42), rotating insulated mechanism (43) is provided with spherical insulation push rod (44), and spherical insulation push rod (44) promotes insulation push jack (45) move left and right; To the insulate move left and right of push jack (45) of insulation push jack (45) passes to the movable contact spring (46) that riveting has moving contact (47), and the position, opposite of moving contact (47) is provided with the static contact spring piece (49) that fixed contact (48) have been adorned in riveting; Also be provided with control coil (37), beginning, the end of control coil (37) are drawn separately.
16. a kind of direct current current-limiting protector according to claim 15 with control coil; It is characterized in that: the positive pole of DC power supply (30) is connected with an end of static contact spring piece (49); The fixed contact (48) of riveting on the other end of static contact spring piece (49) keeps in touch with moving contact (47) or keeps breaking off; The other end of movable contact spring (46) is fixed in shell (50) and upward and with the top (34) of current coil (36) is connected; Current coil terminal (35) is connected through an end of the current coil leading foot (32) on being arranged on the inner connector (33) of shell (50) and being fixed in shell (50); The other end of current coil leading foot (32) is connected with an end of load (31), and the other end of load (31) is connected with the negative pole of DC power supply (31), forms circuit loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201378485U CN202513105U (en) | 2012-04-05 | 2012-04-05 | Current-limiting fuse with overcurrent and short circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201378485U CN202513105U (en) | 2012-04-05 | 2012-04-05 | Current-limiting fuse with overcurrent and short circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513105U true CN202513105U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201378485U Expired - Lifetime CN202513105U (en) | 2012-04-05 | 2012-04-05 | Current-limiting fuse with overcurrent and short circuit protection |
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| Country | Link |
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| CN (1) | CN202513105U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199502A (en) * | 2013-01-29 | 2013-07-10 | 厦门赛尔特电子有限公司 | Initiatively cutting circuit disconnector |
| CN103367065A (en) * | 2012-04-05 | 2013-10-23 | 厦门赛尔特电子有限公司 | Current-limiting fuse with overcurrent and short circuit protection |
| CN111916307A (en) * | 2019-05-09 | 2020-11-10 | 马赛尔·P·霍夫萨埃斯 | Temperature control switch |
| CN112164639A (en) * | 2019-12-12 | 2021-01-01 | 史国民 | Energy-saving circuit breaker |
| CN114006436A (en) * | 2021-11-04 | 2022-02-01 | 傲普(上海)新能源有限公司 | Battery module undervoltage overvoltage overcurrent relay integrated protection circuit |
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2012
- 2012-04-05 CN CN2012201378485U patent/CN202513105U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367065A (en) * | 2012-04-05 | 2013-10-23 | 厦门赛尔特电子有限公司 | Current-limiting fuse with overcurrent and short circuit protection |
| CN103199502A (en) * | 2013-01-29 | 2013-07-10 | 厦门赛尔特电子有限公司 | Initiatively cutting circuit disconnector |
| CN103199502B (en) * | 2013-01-29 | 2015-08-26 | 厦门赛尔特电子有限公司 | A kind of circuit breaker initiatively cutting off circuit |
| CN111916307A (en) * | 2019-05-09 | 2020-11-10 | 马赛尔·P·霍夫萨埃斯 | Temperature control switch |
| CN112164639A (en) * | 2019-12-12 | 2021-01-01 | 史国民 | Energy-saving circuit breaker |
| CN114006436A (en) * | 2021-11-04 | 2022-02-01 | 傲普(上海)新能源有限公司 | Battery module undervoltage overvoltage overcurrent relay integrated protection circuit |
| CN114006436B (en) * | 2021-11-04 | 2023-09-15 | 傲普(上海)新能源有限公司 | Integrated protection circuit of undervoltage, overvoltage and overcurrent relay of battery module |
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