CN212725183U

CN212725183U - Circuit breaker for direct current circuit

Info

Publication number: CN212725183U
Application number: CN202021642774.1U
Authority: CN
Inventors: 蔡青山
Original assignee: Guangzhou Qinzheng Power Technology Co ltd
Current assignee: Guangzhou Qinzheng Power Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-03-16
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a circuit breaker for a direct current circuit, which comprises a breaker main body, a socket, a contact block, a spring strip, a locking piece, a top pin, a supporting plate and a screw, the breaker main body is fixed above the socket, the supporting plate is fixed below the socket through screws, the contact block, the spring strip, the locking piece and the ejector pin are all positioned in the socket, the outline of the socket is in a long strip shape, two groups of fool-proof shafts are arranged at two ends of the upper surface of the socket, two groups of socket holes are arranged between the two groups of fool-proof shafts, an inner groove is arranged in the socket, an accommodating groove is arranged in the socket at the lower side of the socket hole and is communicated with the inner space of the inner groove, two groups of baffle plates are respectively arranged at two sides of the outlet part of the accommodating groove, a pin groove is arranged in the right side of the socket, the entrance of the pin slot is positioned on the lower surface of the socket, and eight groups of seat threaded holes are formed in the bottom surface of the socket. This circuit breaker for direct current circuit, it is convenient to change simple connection, is fit for generally using widely.

Description

Circuit breaker for direct current circuit

Technical Field

The utility model belongs to the technical field of the circuit breaker, concretely relates to circuit breaker for direct current circuit.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, the circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, automatically cutting off a circuit when serious overload or short circuit, undervoltage and other faults occur, and the circuit breaker has the function equivalent to the combination of a fuse type switch, an over-and-under-heat relay and the like.

The existing circuit breaker is usually connected through a wire, screws connected with two ends of the existing circuit breaker need to be loosened to release the wire in the replacement process, then the wire is inserted into two ends of a new circuit breaker and is screwed and fixed through the screws, the connection operation is complex, and the fixing strength is general.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker for direct current circuit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circuit breaker for direct current circuit, includes circuit breaker main part, socket, contact block, spring strip, locking plate, knock pin, layer board and screw, the circuit breaker main part is fixed in the socket top, the layer board passes through the screw fixation in the socket below, contact block, spring strip, locking plate and knock pin all are located inside the socket, the profile of socket is rectangular form, open at the upper surface both ends of socket has two sets of slow-witted axles of preventing, and it has two sets of seat holes to open between two sets of slow-witted axles of preventing, the inside the opening of socket of seat hole downside has the holding tank, the inner space intercommunication of holding tank and inside groove, the export part both sides of holding tank respectively are equipped with two sets of baffles, the inside cotter way that opens in socket right side, the entry in cotter way is located the lower surface of socket, the socket bottom.

Preferably, the locking piece is located inside the inner groove, a pressing block is arranged at one end, located outside the socket, of the locking piece, a spring groove is formed in one side, back to the pressing block, of the spring strip, and two groups of buckling grooves are formed in the middle of the locking piece.

Preferably, the contact block is located inside the accommodating groove, a block groove is formed inside the contact block, block holes are formed in the contact block on the upper side and the lower side of the block groove, a block threaded hole is formed in the part, protruding out of the socket, of the contact block, and the locking piece penetrates through the block groove in the contact block.

Preferably, the ejector pin is inserted into the pin groove, the spring strip is located inside the spring groove in the locking piece, the middle of the ejector pin is located inside the right side of the spring groove, one end of the spring strip abuts against the left edge of the spring groove, and the other end of the spring strip abuts against the side wall of the ejector pin.

Preferably, the supporting plate is provided with a plate connecting hole and a plate fixing hole, and the supporting plate penetrates through the plate connecting hole through a screw to be screwed into the seat threaded hole to be fixed with the socket.

Preferably, circuit breaker main part lower surface is equipped with two sets of fool-proof holes, is equipped with two sets of axle of inserting between two sets of fool-proof holes, it has the axial trough to open on the excircle part of axle to insert, it is located block hole and spring inslot portion to insert the axle, the right side edge card of catching groove in the locking plate goes into the axial trough inside, prevent that the fool-proof hole is located prevents the fool off-axial side.

The utility model discloses a technological effect and advantage: according to the circuit breaker for the direct current circuit, the locking piece is matched with the shaft groove on the excircle of the insertion shaft through the buckling groove in the locking piece to complete the connection of the breaker main body and the socket, and the locking can be released by pushing the pressing block; two groups of contact blocks in the socket complete the connection of a lead and an insertion shaft, the insertion shaft and the contact blocks have larger contact area, and the probability of virtual connection is lower; the baffle separates the wire junction of two sets of contact blocks, avoids peeling off the problem that the bare conductor of crust contacts each other and appears the short circuit.

Drawings

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

FIG. 2 is a schematic view of the underside structure of the present invention;

fig. 3 is a schematic diagram of the structure of the separated state of the present invention;

fig. 4 is a schematic structural diagram of the main body of the circuit breaker of the present invention;

fig. 5 is a schematic view of the upper side structure of the socket of the present invention;

FIG. 6 is a schematic view of the cross-section of the socket of the present invention;

fig. 7 is a schematic view of the structure of the lower side of the socket of the present invention;

fig. 8 is a schematic structural view of the contact block of the present invention;

fig. 9 is a schematic structural view of the locking plate of the present invention;

fig. 10 is a schematic view of the structure of the support plate of the present invention.

In the figure: the circuit breaker comprises a breaker main body 1, a 101 fool-proof hole, a 102 plug shaft, a 103 shaft groove, a 2 socket, a 201 fool-proof shaft, a 202 seat hole, a 203 inner groove, a 204 accommodating groove, a 205 baffle, a 206 seat threaded hole, a 207 pin groove, a 3 contact block, a 301 block hole, a 302 block groove, a 303 threaded hole, a 4 spring strip, a 5 locking piece, a 501 buckling groove, a 502 spring groove, a 503 pressing block, a 6 ejector pin, a 7 supporting plate, a 701 plate connecting hole, a 702 plate fixing hole and 8 screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a circuit breaker for DC circuit as shown in figures 1-10, which comprises a breaker main body 1, a socket 2, a contact block 3, a spring strip 4, a locking piece 5, a top pin 6, a support plate 7 and a screw 8, wherein the breaker main body 1 is fixed above the socket 2, the support plate 7 is fixed below the socket 2 through the screw 8, the contact block 3, the spring strip 4, the locking piece 5 and the top pin 6 are all positioned inside the socket 2, the outline of the socket 2 is strip-shaped, two groups of fool-proof shafts 201 are arranged at two ends of the upper surface of the socket 2, two groups of seat holes 202 are arranged between the two groups of fool-proof shafts 201, an inner groove 203 is arranged inside the socket 2, an accommodating groove 204 is arranged inside the socket 2 at the lower side of the seat holes 202, the accommodating groove 204 is communicated with the inner space of the inner groove 203, two groups of baffles 205 are respectively arranged at two, a pin slot 207 is formed in the right side of the socket 2, the entrance of the pin slot 207 is positioned on the lower surface of the socket 2, and eight groups of socket threaded holes 206 are formed in the bottom surface of the socket 2.

Specifically, the locking piece 5 is located inside the inner groove 203, one end of the locking piece 5 located outside the socket 2 is provided with a pressing block 503, one side of the spring strip 4 back to the pressing block 503 is internally provided with a spring groove 502, the middle of the locking piece 5 is provided with two groups of buckle grooves 501, and the locking piece 5 is made of an insulating material and has certain mechanical strength, such as engineering plastics.

Specifically, the contact block 3 is located inside the receiving groove 204, a block groove 302 is formed inside the contact block 3, block holes 301 are formed inside the contact block 3 on the upper side and the lower side of the block groove 302, a block threaded hole 303 is formed in a portion, protruding out of the socket 2, of the contact block 3, the locking piece 5 penetrates through the block groove 302 in the contact block 3, and the diameter of the block hole 301 corresponds to that of the insertion shaft 102.

Specifically, the knock pin 6 is inserted in the pin groove 207, the spring bar 4 is located in the spring groove 502 of the locking piece 5, the middle of the knock pin 6 is located in the right side of the spring groove 502, one end of the spring bar 4 abuts against the left edge of the spring groove 502, the other end of the spring bar 4 abuts against the side wall of the knock pin 6, and the upper end of the knock pin 6 is of an inclined blade-shaped structure, so that the knock pin is beneficial to shoveling the spring bar 4 during assembly.

Specifically, the supporting plate 7 is provided with a plate connecting hole 701 and a plate fixing hole 702, the supporting plate 7 is screwed into the seat threaded hole 206 through the plate connecting hole 701 by a screw 8 to be fixed with the socket 2, and the socket 2 and the supporting plate 7 are both made of engineering plastics.

Specifically, 1 lower surface of circuit breaker main part is equipped with two sets of fool-proof holes 101, is equipped with two sets of axle 102 of inserting between two sets of fool-proof holes 101, it has axle slot 103 to open on the excircle part of axle 102 to insert, it is inside that axle 102 is located block hole 301 and spring groove 502 to insert, inside the right side edge card of catching groove 501 in the locking plate 5 goes into axle slot 103, fool-proof hole 101 is located the fool-proof axle 201 outside, and insert axle 102 and accomplish the joint through axle slot 103.

The working principle of the circuit breaker for the direct current circuit is that an external circuit is firstly connected with an O-shaped terminal in a crimping mode at the end part, soldering tin needs to be filled at the crimping position of the O-shaped terminal to avoid virtual connection, then screws are threaded into the block threaded holes 303 through the holes of the O-shaped terminals, three sets of the block threaded holes 303 are arranged on each set of the contact blocks 3, which is beneficial for connecting a plurality of sets of wires, when the breaker main body 1 is connected, the pressing block 503 is firstly pushed towards the socket 2, when the locking piece 5 moves, the round part at the left end of the buckling groove 501 is aligned with the block hole 301 for accommodating the plug shaft 102, then the breaker main body 1 is inserted, the fool-proof hole 101 and the fool-proof shaft 201 are arranged to prevent the user from inserting the breaker main body 1 reversely, after the inserting shaft 102 enters the block hole 301 and the catching groove 501, stopping pressing the pressing block 503, the rebound of the spring strip 4 will push the right edge of the catching slot 501 in the locking piece 5 to snap into the shaft slot 103 to complete the locking of the breaker main body 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a circuit breaker for direct current circuit, includes circuit breaker main part (1), socket (2), contact block (3), spring strip (4), locking plate (5), knock pin (6), layer board (7) and screw (8), its characterized in that: the circuit breaker comprises a breaker main body (1) and is characterized in that the breaker main body is fixed above a socket (2), a supporting plate (7) is fixed below the socket (2) through a screw (8), a contact block (3), a spring strip (4), a locking piece (5) and a top pin (6) are all located inside the socket (2), the outline of the socket (2) is in a long strip shape, two groups of foolproof shafts (201) are arranged at two ends of the upper surface of the socket (2), two groups of base holes (202) are formed between the two groups of foolproof shafts (201), an inner groove (203) is formed inside the socket (2), an accommodating groove (204) is formed inside the socket (2) on the lower side of the base holes (202), the inner space of the accommodating groove (204) is communicated with the inner groove (203), two groups of baffles (205) are respectively arranged on two sides of an outlet portion of the accommodating groove (204), a pin groove (207) is formed inside the right side of the socket (, eight groups of seat threaded holes (206) are formed in the bottom surface of the socket (2).

2. A circuit breaker for direct current circuits according to claim 1, characterized in that: the locking piece (5) is located inside the inner groove (203), one end, located outside the socket (2), of the locking piece (5) is provided with a pressing block (503), one side, back to the pressing block (503), of the spring strip (4) is internally provided with a spring groove (502), and the middle of the locking piece (5) is provided with two groups of buckling grooves (501).

3. A circuit breaker for direct current circuits according to claim 1, characterized in that: the contact block (3) is located inside the accommodating groove (204), a block groove (302) is formed in the contact block (3), block holes (301) are formed in the contact block (3) on the upper side and the lower side of the block groove (302), a block threaded hole (303) is formed in the part, protruding out of the socket (2), of the contact block (3), and the locking piece (5) penetrates through the block groove (302) in the contact block (3).

4. A circuit breaker for direct current circuits according to claim 1, characterized in that: the ejector pin (6) is inserted in the pin groove (207), the spring strip (4) is located in the spring groove (502) in the locking piece (5), the middle of the ejector pin (6) is located in the right side of the spring groove (502), one end of the spring strip (4) is ejected on the left edge of the spring groove (502), and the other end of the spring strip (4) is ejected on the side wall of the ejector pin (6).

5. A circuit breaker for direct current circuits according to claim 1, characterized in that: the supporting plate (7) is provided with a plate connecting hole (701) and a plate fixing hole (702), and the supporting plate (7) penetrates through the plate connecting hole (701) through a screw (8) and is screwed into the seat threaded hole (206) to be fixed with the socket (2).

6. A circuit breaker for direct current circuits according to claim 1, characterized in that: breaker main part (1) lower surface is equipped with two sets of fool-proof holes (101), is equipped with two sets of axle (102) of inserting between two sets of fool-proof holes (101), it has axle slot (103) to open on the excircle part of axle (102) to insert, it is inside that axle (102) are located block hole (301) and spring groove (502) to insert axle, the right side edge card of catching groove (501) in locking plate (5) is gone into inside axle slot (103), prevent that fool hole (101) are located and prevent that fool axle (201) outside.