CN217933643U

CN217933643U - Shell of circuit breaker arc extinguishing mechanism

Info

Publication number: CN217933643U
Application number: CN202221851838.8U
Authority: CN
Inventors: 连成龙; 管光春; 刘倩倩
Original assignee: Zhejiang Zhenhua Electronics Co ltd
Current assignee: Zhejiang Zhenhua Electronics Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-29
Anticipated expiration: 2032-07-18

Abstract

The utility model relates to a casing of circuit breaker arc extinguishing mechanism relates to moulded case circuit breaker technical field, and it includes half casing on the left side and half casing on the right side, half casing on the left side includes first casing and second casing, half casing on the right side includes third casing and fourth casing, be equipped with the dovetail on first casing and the second casing, be equipped with on third casing and the fourth casing with dovetail sliding connection's forked tail piece, all be equipped with the fastener on first casing and the second casing, all be equipped with the fixture block with the fastener block on third casing and the fourth casing. The function that first casing, second casing, third casing and fourth casing can be dismantled wantonly, be convenient for change the casing that damages can be realized to this application.

Description

Shell of circuit breaker arc extinguishing mechanism

Technical Field

The application relates to the technical field of molded case circuit breakers, in particular to a shell of a circuit breaker arc extinguishing mechanism.

Background

In a contact electric appliance, the process of making and breaking the current by the contact is often accompanied by the generation and extinction of an electric arc. The electric arc is a gas discharge phenomenon, the existence of the electric arc prolongs the time of switching on and off a fault circuit of a switching device, the damage of the short-circuit fault of a power system is aggravated, certain damage is caused to the electric appliance, and a common arc extinguishing mechanism in the electric appliance is used for solving the influence of the electric arc in the electric appliance.

In the related art, a housing for mounting the arc extinguishing mechanism includes a front housing and a rear housing, the front housing is provided with threaded holes, the threaded holes formed in the rear housing correspond to the threaded holes formed in the front housing one to one, and the front housing and the rear housing are connected and fixed by bolts through the threaded holes formed in the housings.

However, the arc extinguishing mechanism on one side is often damaged due to electric arcs in the using process, so that the shell on one side is damaged, when the damaged shell is replaced, all bolts on the front shell need to be unscrewed, the whole front shell or the rear shell needs to be replaced, the replacement is troublesome, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the casing of circuit breaker arc extinguishing mechanism is difficult for changing, the purpose of this application is to provide a casing of circuit breaker arc extinguishing mechanism.

The application provides a pair of circuit breaker arc extinguishing mechanism's casing adopts following technical scheme: the utility model provides a casing of circuit breaker arc extinguishing mechanism, includes half casing on a left side and half casing on the right side, half casing on a left side includes first casing and second casing, half casing on the right side includes third casing and fourth casing, all be equipped with a plurality of screw holes on half casing on a left side and the half casing on the right side, first casing and second casing pass through screw connection, and third casing and fourth casing pass through screw connection, half casing on a left side and half casing on the right side can dismantle the connection.

By adopting the technical scheme, in a casing of circuit breaker arc extinguishing mechanism, including four parts, including first casing, the second casing, third casing and fourth casing, first casing and second casing butt form half casing on the left side, third casing and fourth casing butt form half casing on the right side, half casing on the left side can be dismantled with half casing on the right side and be connected, first casing, the second casing, be equipped with the screw hole on third casing and the fourth casing, screw hole on the first casing and the screw hole one-to-one on the second casing, first casing and second casing pass through screw connection, screw hole on the third casing and the screw hole one-to-one on the fourth casing, third casing and fourth casing pass through screw connection, when having the damage among first casing, the second casing, when having the damage among third casing and the fourth casing, can demolish the casing of damage part, when the arc extinguishing mechanism of one side damages, can demolish this part's casing and overhaul, avoid can dismantle with the whole back-out of bolt on the casing, reduce work load, and improve work efficiency, and can reduce the economic change cost, for the enterprise benefit.

Optionally, dovetail grooves are formed in the side walls of the first shell and the second shell in the thickness direction, dovetail blocks in sliding connection with the dovetail grooves are arranged on the side walls of the third shell and the fourth shell in the thickness direction, and the shape and the size of each dovetail block are matched with the corresponding dovetail groove.

Through adopting above-mentioned technical scheme, the setting of dovetail and forked tail piece, make left half casing can with right half casing sliding connection, and when first casing, the second casing, when arbitrary casing in third casing and the fourth casing need be dismantled, only need the bolt on the casing that will dismantle to screw out, sliding connection through dovetail and forked tail piece, the casing roll-off that will dismantle can, forked tail shape size and dovetail homogeneous phase complex setting, make left half casing and right half casing can only dismantle through the sliding connection roll-off of dovetail and forked tail piece, avoid left half casing and right half casing to separate along the length direction of casing, increase the steadiness of connecting.

Optionally, a clamping piece is arranged on one side, close to the right half shell, of the left half shell, a clamping hole is formed in the clamping piece, and a clamping block clamped with the clamping hole in the clamping piece is arranged on one side, close to the left half shell, of the right half shell.

Through adopting above-mentioned technical scheme, the setting of card hole and fixture block joint on the fastener for half left casing is more firm with being connected of half right casing, avoids half left casing and half right casing to separate through the sliding connection of dovetail and dovetail piece.

Optionally, the clamping piece is fixedly connected with a first fixing seat, the clamping piece is fixedly connected with a second fixing seat, the first fixing seat is connected with the left half shell through a screw, and the second fixing seat is connected with the right half shell through a screw.

Through adopting above-mentioned technical scheme, when fastener or fixture block damage, the accessible is dismantled first fixing base or second fixing base, dismantles fastener or fixture block and gets off to change, avoids because of the damage of fastener or fixture block, and need whole first casing, second casing, third casing or the fourth casing of changing, reduces the replacement cost.

Optionally, the clip is connected to the first fixing seat through a connector.

Through adopting above-mentioned technical scheme, the setting of connecting piece for fastener accessible connecting piece is connected with first fixing base, thereby makes fastener accessible connecting piece overturn, realizes the joint and the separation of fastener and fixture block.

Optionally, the first casing and the third casing extend on being close to the lateral wall of screw hole and have the locating plate, be equipped with on the lateral wall that second casing and fourth casing are close to the screw hole and supply locating plate grafting complex constant head tank.

Through adopting above-mentioned technical scheme, the locating plate of first casing can be pegged graft in the constant head tank of second casing, and the locating plate of third casing can be pegged graft in the constant head tank of fourth casing for the screw hole of first casing and the screw hole one-to-one of second casing, the screw hole of third casing and the screw hole one-to-one of fourth casing let the lock of bolt go into more accurately and convenient.

Optionally, the first casing is equipped with the chimb on keeping away from the side edge of third casing, and the third casing is kept away from and is equipped with the chimb on the side edge of first casing, and the side edge that the fourth casing was kept away from to the second casing is equipped with chimb shape size homogeneous phase complex concave edge, and the side edge that the second casing was kept away from to the fourth casing is equipped with chimb shape size homogeneous phase complex concave edge.

Through adopting above-mentioned technical scheme, fix when first casing and second casing butt and not lock the bolt, third casing and fourth casing butt and not lock the bolt and fix, chimb and concave edge shape size homogeneous phase complex set up for but the chimb joint is in the concave edge, thereby avoid taking place to shift between first casing and second casing, third casing and the fourth casing, first casing and second casing of better location, third casing and fourth casing.

Optionally, one side of the convex edge, which is far away from the first shell and the third shell, is provided with a turned edge which is turned outwards, and one side of the concave edge, which is far away from the second shell and the fourth shell, is provided with a cover edge which is mutually buckled with the turned edge.

Through adopting above-mentioned technical scheme, when not locking the screw on half casing on the left side and half casing on the right side, the setting that turn-ups and lid limit buckled mutually can make the lock of first casing and second casing more firm for the lock of third casing and fourth casing is more firm, and the lock of the screw of being convenient for goes into.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the setting that falls into first casing, second casing, third casing and fourth casing with circuit breaker arc extinguishing mechanism's casing, when the casing damages because of electric arc, can dismantle the casing of the part that damages gets off and change, need not to lift whole casing off and just can change for it is more convenient to dismantle, and reduces the replacement cost, improves work efficiency.

2. The dovetail groove is formed in the left half shell, the dovetail block is arranged on the right half shell, the dovetail groove and the dovetail block are connected in a sliding mode, and through the arrangement of the dovetail groove and the dovetail block, when any shell in the first shell, the second shell, the third shell and the fourth shell is damaged, the dovetail groove and the dovetail block on the shell can be matched, and the damaged shell can be directly slid out to be replaced.

3. Be equipped with the fastener on half casing on the left side, be equipped with the fixture block on half casing on the right side, through the joint of fastener and fixture block, avoid half casing on the left side and half casing on the right side to break away from through the sliding fit of dovetail and dovetail, half casing on the left side and half casing on the right side can be better fixed.

4. Be equipped with the chimb on first casing and the third casing, be equipped with the concave edge on second casing and the fourth casing, chimb and concave edge shape size homogeneous phase complex setting for during first casing and second casing butt, during third casing and fourth casing butt, prevent to take place to shift between the casing, first casing, second casing, third casing and the fourth casing of better location make things convenient for the lock of bolt to go into.

Drawings

FIG. 1 is a schematic view of the overall structure of a housing according to an embodiment of the present application;

FIG. 2 is a schematic view of an embodiment of the present application embodying dovetail blocks and dovetail groove structures;

FIG. 3 is a schematic view of a positioning plate and a positioning slot according to an embodiment of the present application;

FIG. 4 is a schematic view of a clip and a latch according to an embodiment of the present application;

fig. 5 is an exploded schematic view of an embodiment of the present application.

In the figure, 1, a left half shell; 11. a first housing; 111. a first fixed seat; 112. clamping the piece; 113. clamping holes; 114. a connecting member; 115. a dovetail groove; 116. a convex edge; 117. flanging; 118. a threaded hole; 119. positioning a plate; 12. a second housing; 121. positioning a groove; 122. concave edges; 123. covering edges; 2. a right half shell; 21. a third housing; 211. a second fixed seat; 212. a clamping block; 213. a dovetail block; 22. and a fourth housing.

Detailed Description

The present application is described in further detail below with reference to fig. 1-5.

Example (b): a shell of a circuit breaker arc extinguishing mechanism, referring to fig. 1, comprises a left half shell 1 and a right half shell 2, wherein the left half shell 1 comprises a first shell 11 and a second shell 12, and the right half shell 2 comprises a third shell 21 and a fourth shell 22.

Referring to fig. 2, a dovetail groove 115 is formed in the left half casing 1, a dovetail block 213 having a shape and a size that are matched with the shape and the size of the dovetail groove 115 is formed in the right half casing 2, the dovetail block 213 on the third casing 21 can be slid into the dovetail groove 115 of the first casing 11 to fix the first casing 11 and the third casing 21, the dovetail block 213 on the fourth casing 22 can be slid into the dovetail groove 115 of the second casing 12 to fix the second casing 12 and the fourth casing 22, and the dovetail block 213 is provided with a shape and a size that are matched with the dovetail groove 115 to prevent the left half casing 1 and the right half casing 2 from being separated in the length direction.

Referring to fig. 3, the positioning plates 119 are disposed on the threaded holes 118 of the first housing 11 and the third housing 21, and the positioning grooves 121 are disposed on the threaded holes 118 of the second housing 12 and the fourth housing 22, so that when the first housing 11 is fastened to the second housing 12 and the third housing 21 is fastened to the fourth housing 22, the first housing 11 can be better positioned on the second housing 12 by the fastening of the positioning plates 119 and the positioning grooves 121, and the third housing 21 is positioned on the fourth housing 22, so that the threaded holes 118 on the first housing 11 and the second housing 12 are in one-to-one correspondence, and the threaded holes 118 on the third housing 21 and the fourth housing 22 are in one-to-one correspondence, thereby facilitating the locking of the bolts.

Referring to fig. 3, a convex edge 116 is disposed on a side edge of the first housing 11 away from the third housing 21, a convex edge 116 is disposed on a side edge of the third housing 21 away from the first housing 11, a concave edge 122 matched with the shape and size of the convex edge 116 is disposed on a side edge of the second housing 12 away from the fourth housing 22, and a concave edge 122 matched with the shape and size of the convex edge 116 is disposed on a side edge of the fourth housing 22 away from the second housing 12. A flange 117 turned outwards is arranged on one side of the convex edge 116 away from the first shell 11 and the third shell 21, and a cover edge 123 buckled with the flange 117 is arranged on one side of the concave edge 122 away from the second shell 12 and the fourth shell 22. When first casing 11 and second casing 12 butt, third casing 21 and fourth casing 22 butt, half left casing 1 and half right casing 2 sliding connection, and when not locking the bolt on half left casing 1 and the half right casing 2, chimb 116 and concave edge 122 butt, turn-ups 117 and lid limit 123 lock each other, can avoid first casing 11, second casing 12, third casing 21 and fourth casing 22 butt when together, take place horizontal and vertical removal, be convenient for the lock of bolt to go into.

Referring to fig. 4, a first fixing seat 111 is disposed on each of the first housing 11 and the second housing 12, a second fixing seat 211 is disposed on each of the third housing 21 and the fourth housing 22, a fixture block 212 is fixedly disposed on the second fixing seat 211, a clamping element 112 is clamped to the fixture block 212, a flexible connecting element 114 is disposed between the clamping element 112 and the first fixing seat 111, and the clamping element 112 can be turned over on the first fixing seat 111 through the connecting element 114. Threaded holes 118 are formed in the first fixed seat 111 and the second fixed seat 211, and the first fixed seat 111 and the second fixed seat 211 are connected with the first shell 11, the second shell 12, the third shell 21 and the fourth shell 22 through bolts. The clip 112 is provided with a clip hole 113, and the clip hole 113 can allow the clip 212 to pass through, so that the clip 112 is clipped with the clip 212, thereby fixing the left half shell 1 and the right half shell 2, and avoiding the separation between the left half shell 1 and the right half shell 2 through the sliding connection between the dovetail groove 115 and the dovetail block 213.

Referring to fig. 5, when any one of the first housing 11, the second housing 12, the third housing 21 and the fourth housing 22 is damaged, the bolt corresponding to the part can be rotated out, the clip 112 is turned up from the clip 212, and then the damaged housing can be replaced by sliding the clip 115 on the left housing 1 and the dovetail block 213 on the right housing 2, so that the whole housing is not required to be replaced, and the replacement is more convenient and faster, and meanwhile, the replacement cost is reduced.

The implementation principle of the embodiment of the application is as follows: divide into first casing 11 with circuit breaker arc extinguishing mechanism's casing, second casing 12, third casing 21 and fourth casing 22, dovetail 115 has been seted up on first casing 11 and the second casing 12, be equipped with dovetail 213 on third casing 21 and the fourth casing 22, dovetail 115 and dovetail 213 sliding fit, be equipped with fastener 112 on first casing 11 and the second casing 12, card hole 113 has been seted up on the fastener 112, be equipped with fixture block 212 on third casing 21 and the fourth casing 22, fixture hole 113 can supply fixture block 212 to pass, make fastener 112 and fixture block 212 joint, make first casing 11, second casing 12, the fixing between third casing 21 and the fourth casing 22 is more firm. When the shell of the circuit breaker arc extinguishing mechanism is damaged due to electric arcs, the corresponding bolt on the damaged shell can be screwed out, the clamping piece 112 is turned up from the clamping block 212, the corresponding damaged shell slides out and is detached through the sliding connection of the dovetail groove 115 and the dovetail block 213, and the damaged shell is replaced.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a casing of circuit breaker arc extinguishing mechanism which characterized in that: including half casing (1) on the left side and half casing (2) on the right side, half casing (1) on the left side includes first casing (11) and second casing (12), half casing (2) on the right side includes third casing (21) and fourth casing (22), all be equipped with a plurality of screw holes (118) on half casing (1) on the left side and half casing (2) on the right side, first casing (11) and second casing (12) pass through the screw connection, and third casing (21) and fourth casing (22) pass through the screw connection, half casing (1) on the left side and half casing (2) on the right side can dismantle the connection.

2. The housing of an arc extinguishing mechanism of a circuit breaker according to claim 1, wherein: the dovetail groove (115) is formed in the side walls of the first shell (11) and the second shell (12) along the thickness direction, the dovetail blocks (213) in sliding connection with the dovetail groove (115) are arranged in the side walls of the third shell (21) and the fourth shell (22) along the thickness direction, and the dovetail blocks (213) are matched with the dovetail groove (115) in shape and size.

3. The housing of an arc extinguishing mechanism for a circuit breaker of claim 1, wherein: the clamping device is characterized in that a clamping piece (112) is arranged on one side, close to the right half shell (2), of the left half shell (1), a clamping hole (113) is formed in the clamping piece (112), and a clamping block (212) clamped with the clamping hole (113) is arranged on one side, close to the left half shell (1), of the right half shell (2).

4. The housing of an arc extinguishing mechanism of a circuit breaker according to claim 3, wherein: the clamping piece (112) is fixedly connected with a first fixing seat (111), the clamping block (212) is fixedly connected with a second fixing seat (211), the first fixing seat (111) is connected with the left half shell (1) through a screw, and the second fixing seat (211) is connected with the right half shell (2) through a screw.

5. The housing of an arc extinguishing mechanism of a circuit breaker according to claim 3, wherein: the clamping piece (112) is connected with the first fixed seat (111) through a connecting piece (114).

6. The housing of an arc extinguishing mechanism of a circuit breaker according to claim 1, wherein: the side walls of the first shell (11) and the third shell (21) close to the threaded hole (118) extend to form positioning plates (119), and the side walls of the second shell (12) and the fourth shell (22) close to the threaded hole (118) are provided with positioning grooves (121) for the positioning plates (119) to be inserted and matched.

7. The housing of an arc extinguishing mechanism for a circuit breaker of claim 1, wherein: be equipped with chimb (116) on the side edge of third casing (21) is kept away from in first casing (11), be equipped with chimb (116) on the side edge of first casing (11) is kept away from in third casing (21), the side edge that fourth casing (22) are kept away from in second casing (12) is equipped with concave edge (122) with chimb (116) shape size homogeneous phase complex, the side edge that second casing (12) are kept away from in fourth casing (22) is equipped with concave edge (122) with chimb (116) shape size homogeneous phase complex.

8. The housing of an arc extinguishing mechanism of a circuit breaker according to claim 7, wherein: one side that first casing (11) and third casing (21) are kept away from in chimb (116) is equipped with turn-ups (117) that turn over to the outside, one side that second casing (12) and fourth casing (22) are kept away from in chimb (122) is equipped with lid limit (123) of turn-ups (117) mutual lock.