CN111508790A

CN111508790A - Electronic molded case circuit breaker

Info

Publication number: CN111508790A
Application number: CN202010175508.0A
Authority: CN
Inventors: 向国庆; 刘忠; 陈武奇
Original assignee: Zhejiang Chengdian Electric Co ltd
Current assignee: ANDELI GROUP CO LTD
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-08-07
Anticipated expiration: 2040-03-13
Also published as: CN111508790B

Abstract

The invention discloses an electronic molded case circuit breaker, which comprises a circuit breaker main body and a switch arranged on the circuit breaker main body and used for switching on and off a circuit, a fixed seat is arranged at the position, close to the upper part of the switch, on the outer side of the breaker main body, a telescopic piece is arranged between the fixed seat and the switch, the electronic molded case circuit breaker comprises a circuit breaker body, so as to be different from the prior art, on the premise of not influencing the normal breaking use of the switch, when the breaker is disconnected, the telescopic piece can automatically follow the expansion and switch to a working state, and the automatic insertion and limiting of the telescopic piece are carried out through the automatic ejection limiting mechanism without the need of the manual insertion and positioning when a user ascends, thereby realizing the automatic limit of the switch, effectively preventing the switch from being touched and closed by mistake, having good protection performance, and the circuit breaker switch is greatly convenient to close and protect, multiple climbing is effectively avoided, and the safety performance is good.

Description

Electronic molded case circuit breaker

Technical Field

The invention relates to the technical field of molded case circuit breakers, in particular to an electronic molded case circuit breaker.

Background

A plastic shell breaker is an equipment capable of automatically cutting off current after current exceeds tripping setting, a plastic insulator is used as a shell of the equipment for isolating conductors and grounding metal parts, all parts of the plastic shell are sealed in the plastic shell, an auxiliary contact, an undervoltage release, a shunt release and the like are modularized, the breaker can be used for distributing electric energy, an asynchronous motor is not frequently started, a power supply line, the motor and the like are protected, when the fault occurs, such as serious overload, short circuit, undervoltage and the like, the circuit can be automatically cut off, the function of the breaker is equivalent to the combination of a fuse type switch and an over-under-heat relay and the like, the parts do not need to be changed after the fault current occurs, and the breaker is widely applied at present.

To rural villages and towns user, its circuit breaker is under general condition, it installs in the ammeter case together to communicate the ammeter, and hang on the eminence wall body, in order to avoid child to play, and when the circuit fault in the house, generally all the user overhauls by oneself, when overhauing, for preventing the emergence of electric leakage contact accident, its circuit breaker switch must be transferred to off-state, in order to prevent the emergence of electric leakage contact accident, consequently set up certain safeguard measure on the circuit breaker switch and be indispensable, thereby be used for preventing user's maloperation or give user's warning.

And according to the electronic type moulded case circuit breaker that patent number CN201920578127.X disclosed, including circuit breaker body, front shroud and switch, one side of circuit breaker body is provided with the front shroud, and switch slot has been seted up to the intermediate position department of front shroud, and the inside of switch slot is provided with the switch, and draw-in groove has been seted up to top one side of switch. The utility model discloses in, in the in-process that uses, the accessible torsional spring drives the pivot and rotates, thereby it rotates to drive the bracing piece, the one end block of accessible bracing piece is in the draw-in groove on the switch, thereby can prescribe a limit to the position of switch, prevent that the workman from when carrying out electrical operation, by people's mistake is pulled back the switch, cause the emergence of workman operational danger, can remind for the outsider through such setting up inequality, while simple structure, high reliability, switch inslot portion is provided with elastic block and spring, can be to the bracing piece block to the draw-in groove when inside, play the effect of buffering.

However, in the practical use process, when the household circuit fault causes the breaker to break, the user needs to overhaul the household circuit and the electric appliance at this moment, the breaker is broken for the protection circuit at this moment, but the user still needs to ascend with the help of a ladder to clamp the supporting rod into the clamping groove on the breaker switch, thereby after limiting the breaker switch, the safe overhaul work can be ensured, one-time ascending insertion process is forcibly added, many uncertain factors are increased, certain potential safety hazard exists, and ascending insertion is needed, so that the use of the electronic molded case circuit breaker is relatively inconvenient.

Disclosure of Invention

The invention aims to provide an electronic molded case circuit breaker capable of automatically limiting and fixing a switch so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an electronic molded case circuit breaker comprises a circuit breaker main body and a switch arranged on the circuit breaker main body and used for switching a circuit, wherein a fixed seat is arranged at the position, close to the upper part of the switch, on the outer side of the circuit breaker main body, a telescopic piece is arranged between the fixed seat and the switch, fixed parts are arranged on the fixed seat and the switch, an automatic ejection limiting mechanism is arranged in the telescopic piece, two ends of the telescopic piece are respectively and rotatably connected with the fixed seat and the switch through the fixed parts, so that the electronic molded case circuit breaker is different from the prior art, on the premise that the normal circuit breaking use of the switch is not influenced, the telescopic piece can automatically follow and stretch when the circuit breaker is disconnected, the circuit breaker is switched to a working state, the telescopic piece is automatically inserted and limited through the automatic ejection limiting mechanism, the manual insertion positioning is not required for ascending of, the protection performance is good, the circuit breaker switch is greatly convenient to close and protect, multiple climbing is effectively avoided, and the safety performance is good.

Preferably, the extensible member includes a fixed cylinder and a shifting rod for stretching and retracting and shifting, the shifting rod slides and is arranged in the fixed cylinder, one end of the shifting rod close to the switch extends to the outer side of the fixed cylinder, the shifting rod and one end of the fixed cylinder which are separated from each other are respectively installed on the switch and the fixed seat through the rotation of the fixing piece, and the shifting rod and the fixed cylinder are connected through the extensible member to provide effective synchronous extensible capability and further cooperate with an automatic ejection limiting mechanism to ensure high-efficiency automatic ejection limit of the switch.

Preferably, the fixing seat is movably installed at the outer side of the breaker main body through a screw, the fixing part comprises two fixing pin rods for installation and fixation, the switch is provided with a through mounting groove, the end parts of the fixing cylinder and the shifting rod are respectively fixed with a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively provided with a movable through groove which transversely penetrates, the first mounting seat is positioned in the fixing seat, the second mounting seat is positioned in the mounting groove, the two fixing pin rods respectively penetrate the fixing seat and the switch, the end parts of the fixing pin rods are respectively fixed with a fixing nut through threads, the fixing pin rods respectively penetrate the movable through grooves, and the fixing pin rods are respectively rotatably connected with the first mounting seat and the second mounting seat, so that when the breaker main body is damaged and discarded, the reuse of the telescopic part and each limit part can be ensured, the environmental protection performance is strong.

Preferably, the automatic ejection limiting mechanism comprises an ejection clamping block, a through limiting clamping groove is formed in the outer side of one end, close to the switch, of the fixed cylinder, a shifting groove is formed in the outer side of one end, located in the fixed cylinder, of the shifting rod, the ejection clamping block is arranged in the shifting groove in a sliding mode, an elastic part is fixed to one end, located in the shifting groove, of the shifting clamping block, one end, far away from the shifting clamping block, of the elastic part is fixed to the inner wall of the shifting groove, effective ejection limiting is guaranteed through the automatic ejection limiting mechanism, automatic limiting in the switch disconnection process is guaranteed, manual limiting of people ascending is avoided, and safety is good.

Preferably, the elastic part comprises a compression spring, two ends of the compression spring are respectively fixed with the ejection fixture block and the inner wall of the displacement groove, effective elastic resetting ejection is guaranteed through the elastic part, and effective limiting is guaranteed.

Preferably, the shift lever outside is provided with the direction locating part, the direction locating part includes the direction draw runner, the direction spout has been seted up to the fixed section of thick bamboo inner wall, the direction draw runner is fixed in the shift lever outside, and direction draw runner and direction spout inner wall sliding connection, through the direction locating part to effectively improve the flexible stability of piece use flexible in-process, guarantee that the efficient is automatic ejecting spacing, in order to guarantee convenient and practical.

Preferably, the position that the fixed cylinder outside is close to spacing draw-in groove all is fixed with supplementary piece that resets, supplementary piece that resets is including fixed frame, the activity of fixed frame internalization runs through has the ejector pin that resets, ejector pin one end that resets is located spacing draw-in groove, and the one end outside that the ejector pin that resets is located fixed frame is fixed with the limiting plate, one side that the limiting plate is close to fixed cylinder is fixed with reset spring, reset spring keeps away from the one end and the contact of fixed cylinder of limiting plate, through supplementary piece that resets, then the effectual reset work that has made things convenient for the switch.

Preferably, the end part of the reset ejector rod, which is far away from the fixed cylinder, is fixed with a rubber jacket, and through the rubber jacket, the comfort of resetting and pressing the switch is effectively improved, so that the resetting work of the switch is further facilitated.

Compared with the prior art, the invention has the beneficial effects that:

compared with the prior art, the automatic limiting device is characterized in that on the premise that the normal circuit breaking use of the switch is not influenced, the telescopic piece of the breaker can automatically stretch along with the breaker to be switched to a working state, the telescopic piece is automatically inserted and limited through the automatic ejection limiting mechanism, and the user does not need to ascend and manually insert and position the telescopic piece, so that the automatic limiting of the switch is realized, the switch is effectively prevented from being touched and closed by mistake, the protection performance is good, the closing protection work of the breaker switch is greatly facilitated, the repeated ascending is effectively avoided, and the safety performance is good.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic plan view partially in section of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the three-dimensional partially sectioned structure of FIG. 1 according to the present invention;

FIG. 4 is a schematic structural view of FIG. 1 with FIG. 3 exploded;

FIG. 5 is a schematic view of a portion of the structure of FIG. 4 according to the present invention;

FIG. 6 is a schematic plan view in partial cross-section of FIG. 5 in accordance with the present invention;

FIG. 7 is an enlarged view of the area A of the present invention;

FIG. 8 is an enlarged view of the region B of the present invention;

FIG. 9 is an enlarged view of the region C according to the present invention.

In the figure: 1-a circuit breaker body; 2-a switch; 3-fixing the base; 4-a telescoping member; 5-a fixing piece; 6-automatically ejecting out a limiting mechanism; 7-a fixed cylinder; 8-a shifting rod; 9-fixing the pin rod; 10-mounting grooves; 11-a first mount; 12-a second mount; 13-movable through grooves; 14-a fixing nut; 15-ejecting out a fixture block; 16-a limiting clamping groove; 17-a displacement groove; 18-an elastic member; 19-compression spring; 20-a guide limit; 21-a guide runner; 22-a guide chute; 23-an auxiliary return member; 24-a fixed frame; 25-resetting the ejector rod; 26-a limiting plate; 27-a return spring; 28-rubber jacket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: the electronic molded case circuit breaker comprises a circuit breaker main body 1 and a switch 2 which is arranged on the circuit breaker main body 1 and is used for opening and closing a circuit, wherein the circuit breaker main body 1 and the switch 2 both adopt equipment in the prior art and are not described in detail herein;

the outer side of the breaker main body 1 is provided with a fixed seat 3 near the position above the switch 2, an extensible part 4 is arranged between the fixed seat 3 and the switch 2, the fixed seat 3 and the switch 2 are both provided with a fixed part 5, an automatic ejection limiting mechanism 6 is arranged in the extensible part 4, two ends of the extensible part 4 are respectively connected with the fixed seat 3 and the switch 2 in a rotating way through the fixed part 5, when the switch 2 of the breaker main body 1 is in a closed state and the extensible part 4 is in a normal contraction state, and the automatic ejection limiting mechanism 6 does not perform ejection limiting, in the process, when the switch 2 of the breaker main body 1 is closed due to a household circuit fault, the extensible part 4 stretches out and retracts, and after the extensible part 4 is completely stretched out, the automatic ejection limiting mechanism 6 ejects out to limit the extensible part 4 so as to ensure that the extensible part 4 can not retract and reset, therefore, the disconnected switch 2 is automatically and effectively limited, the person is not required to ascend, the safety is good, and the circuit maintenance work is efficiently protected by the convenient guarantee.

The extensible member 4 includes solid fixed cylinder 7 and the aversion pole 8 that is used for flexible aversion, and solid fixed cylinder 7 is the drum structure but not restricted, and the same reason, aversion pole 8 is the circular rod structure but not restricted, aversion pole 8 slides and sets up in gu fixed cylinder 7, and the one end that aversion pole 8 is close to switch 2 extends to gu fixed cylinder 7 outside, the one end that aversion pole 8 and gu fixed cylinder 7 leave is installed on switch 2 and fixing base 3 through 5 rotations of mounting respectively, and then guarantees the switching of following switch 2 to stretch out and draw back, and through automatic ejecting stop gear 6, thereby accomplish the automation after the disconnection of switch 2 spacing, convenient and practical, and the security is good.

The fixing seat 3 is movably installed outside the breaker main body 1 through a screw, the fixing part 5 comprises two fixing pin rods 9 used for installation and fixation, a through installation groove 10 is formed in the switch 2, the installation groove 10 is a polygonal groove body mechanism but is not limited, a first installation seat 11 and a second installation seat 12 are respectively fixed at the end parts of the fixing cylinder 7 and the shifting rod 8, a movable through groove 13 which transversely penetrates through is respectively formed in each of the first installation seat 11 and the second installation seat 12, the movable through groove 13 is a circular groove, the first installation seat 11 is positioned in the fixing seat 3, the second installation seat 12 is positioned in the installation groove 10, the two fixing pin rods 9 are respectively arranged on the fixing seat 3 and the switch 2 in a penetrating mode, fixing nuts 14 are fixed at the end parts of the fixing pin rods 9 through threads, the fixing pin rods 9 respectively penetrate through the movable through grooves 13, and the groove diameter of the movable through grooves 13 is larger than the rod diameter of the fixing pin rods 9, and the fixed pin rod 9 is respectively connected with the first mounting seat 11 and the second mounting seat 12 in a rotating manner, so that the telescopic part 4 can be conveniently disassembled and assembled while the effective rotating installation is ensured, the telescopic part 4 and each limit part can be ensured to be reused when the breaker main body 1 is damaged and discarded due to faults, and the environmental protection performance is strong.

The automatic ejection limiting mechanism 6 comprises an ejection clamping block 15, the ejection clamping block 15 is of a cylindrical clamping column structure but is not limited, a through limiting clamping groove 16 is formed in the outer side of one end, close to the switch 2, of the fixed cylinder 7, a shifting groove 17 is formed in the outer side of one end, located in the fixed cylinder 7, of the shifting rod 8, the shifting groove 17 is of a circular groove structure but is not limited, the ejection clamping block 15 is slidably arranged in the shifting groove 17, an elastic element 18 is fixed to one end, located in the shifting groove 17, of the shifting clamping block, one end, far away from the shifting clamping block, of the elastic element 18 is fixed to the inner wall of the shifting groove 17, when the switch 2 is turned off in use, the turned-off switch 2 drives the fixed cylinder 7 and the shifting rod 8 to rotate, the shifting rod 8 is shifted and extended out, when the switch 2 is completely turned off, the ejection clamping block 15 just moves to the position of the limiting clamping groove, the ejection clamping block 15 is ejected out and is inserted into the limiting clamping groove 16 to effectively limit the displacement rod 8, so that the disconnection switch 2 is automatically limited to avoid mistaken touch resetting.

The elastic piece 18 comprises a compression spring 19, in order to avoid influencing effective circuit-breaking protection of the switch 2, the elasticity of the compression spring 19 is slightly low, namely the extrusion action of the ejection fixture block 15 and the inner wall of the fixed cylinder 7 is not strong, so that efficient automatic displacement of the displacement rod 8 is facilitated, and two ends of the compression spring 19 are respectively fixed with the inner walls of the ejection fixture block 15 and the displacement groove 17, so that effective elastic displacement capacity is guaranteed, and effective automatic ejection and limiting are guaranteed.

The outer side of the shifting rod 8 is provided with a guiding limiting part 20, the guiding limiting part 20 comprises a guiding sliding strip 21, the guiding sliding strip 21 is of an arc strip structure but is not limited, the inner wall of the fixed cylinder 7 is provided with a guiding sliding groove 22, the guiding sliding strip 21 is fixed on the outer side of the shifting rod 8, and the guiding sliding strip 21 is in sliding connection with the inner wall of the guiding sliding groove 22, when in use, because the groove diameter of the movable through groove 13 is larger than the rod diameter of the fixed pin rod 9 in order to ensure that the telescopic part 4 rotates efficiently to ensure the efficient closing of the switch 2, when in use, the shifting rod 8 and the fixed cylinder 7 can deflect relatively when in telescopic use, so as to influence the efficient insertion of the ejection clamping block 15 and the limiting clamping groove 16, thereby influencing the stable automatic limiting, when in this situation, the stable telescopic use of the telescopic part 4 can be effectively ensured through the guiding limiting part 20, thereby ensuring the efficient and stable ejection limiting use, effective automatic ejection limiting is guaranteed.

The outer side of the fixed cylinder 7 close to the position of the limit clamping groove 16 is fixed with an auxiliary reset part 23, the auxiliary reset part 23 comprises a fixed frame 24, a reset ejector rod 25 penetrates through the fixed frame 24, the reset ejector rod 25 is of a circular rod structure but is not limited, one end of the reset ejector rod 25 is positioned in the limit clamping groove 16, a limit plate 26 is fixed on the outer side of one end of the reset ejector rod 25 positioned in the fixed frame 24, the limit plate 26 is of a circular plate structure but is not limited, a reset spring 27 is fixed on one side of the limit plate 26 close to the fixed cylinder 7, one end of the reset spring 27 far away from the limit plate 26 is in contact with the fixed cylinder 7, when the disconnected switch 2 needs to be closed and reset, the end of the reset ejector rod 25 is pressed to drive the reset ejector rod to shift, the reset spring 27 contracts, and then the ejector fixture block 15 is ejected out of the limit clamping, the ejection limiting function of the shifting rod 8 is cancelled, the switch 2 is pulled to reset, and the automatic ejection limiting mechanism 6 is convenient and practical to use and effectively and conveniently cancelled and limited.

The end part of the reset ejector rod 25 far away from the fixed cylinder 7 is fixed with a rubber outer sleeve 28, so that the comfort of the reset ejector rod 25 during pressing is effectively improved, and the comfortable closing reset of the switch 2 is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Electronic type moulded case circuit breaker, include circuit breaker main part (1) and install switch (2) that are used for circuit switching on and off on circuit breaker main part (1), its characterized in that: the circuit breaker is characterized in that a fixing seat (3) is installed at a position, close to the top of a switch (2), of the outer side of a circuit breaker main body (1), a telescopic piece (4) is arranged between the fixing seat (3) and the switch (2), fixing pieces (5) are arranged on the fixing seat (3) and the switch (2), an automatic ejection limiting mechanism (6) is arranged in the telescopic piece (4), and two ends of the telescopic piece (4) are rotatably connected with the fixing seat (3) and the switch (2) through the fixing pieces (5) respectively.

2. The electronic molded case circuit breaker of claim 1, wherein: expansion part (4) including a fixed cylinder (7) and shift lever (8) that are used for flexible aversion, shift lever (8) slide to set up in a fixed cylinder (7), and shift lever (8) extend to a fixed cylinder (7) outside near the one end of switch (2), shift lever (8) and a fixed cylinder (7) one end that leaves are passed through mounting (5) respectively and are rotated and install on switch (2) and fixing base (3).

3. The electronic molded case circuit breaker according to claim 2, wherein: the fixing seat (3) is movably arranged outside the breaker main body (1) through a screw, the fixing part (5) comprises two fixing pin rods (9) used for installation and fixation, a through mounting groove (10) is formed in the switch (2), the end parts of the fixing cylinder (7) and the shifting rod (8) are respectively fixed with a first mounting seat (11) and a second mounting seat (12), the first mounting seat (11) and the second mounting seat (12) are respectively provided with a movable through groove (13) which transversely penetrates through, the first mounting seat (11) is positioned in the fixing seat (3), the second mounting seat (12) is positioned in the mounting groove (10), the two fixing pin rods (9) respectively penetrate through the fixing seat (3) and the switch (2), the end parts of the fixing pin rods (9) are respectively fixed with a fixing nut (14) through threads, the fixing pin rods (9) respectively penetrate through the movable through grooves (13), and the fixed pin rod (9) is respectively connected with the first mounting seat (11) and the second mounting seat (12) in a rotating way.

4. The electronic molded case circuit breaker according to claim 3, wherein: automatic ejecting stop gear (6) are including ejecting fixture block (15), the one end outside that solid fixed cylinder (7) are close to switch (2) is seted up through spacing draw-in groove (16), aversion recess (17) have been seted up in the one end outside that aversion pole (8) are located solid fixed cylinder (7), ejecting fixture block (15) slide to set up in aversion recess (17), and the one end that the aversion fixture block is located aversion recess (17) is fixed with elastic component (18), the one end that the aversion fixture block was kept away from in elastic component (18) is fixed with aversion recess (17) inner wall.

5. The electronic molded case circuit breaker of claim 4, wherein: the elastic piece (18) comprises a compression spring (19), and two ends of the compression spring (19) are respectively fixed with the inner walls of the ejection fixture block (15) and the displacement groove (17).

6. The electronic molded case circuit breaker of claim 5, wherein: the outside of shifting rod (8) is provided with direction locating part (20), direction locating part (20) are including direction draw runner (21), direction spout (22) have been seted up to fixed section of thick bamboo (7) inner wall, direction draw runner (21) are fixed in the shifting rod (8) outside, and direction draw runner (21) and direction spout (22) inner wall sliding connection.

7. The electronic molded case circuit breaker of claim 6, wherein: the position that a fixed section of thick bamboo (7) outside is close to spacing draw-in groove (16) all is fixed with supplementary piece (23) that resets, supplementary piece (23) that resets is including fixed frame (24), fixed frame (24) internalization runs through has reset ejector pin (25), reset ejector pin (25) one end is located spacing draw-in groove (16), and the one end outside that reset ejector pin (25) are located fixed frame (24) is fixed with limiting plate (26), one side that limiting plate (26) are close to fixed section of thick bamboo (7) is fixed with reset spring (27), reset spring (27) keep away from the one end and the contact of fixed section of thick bamboo (7) of limiting plate (26).

8. The electronic molded case circuit breaker of claim 7, wherein: and rubber outer sleeves (28) are fixed at the end parts of the reset ejector rods (25) far away from the fixed cylinder (7).