CN215266141U

CN215266141U - Plug-in circuit breaker

Info

Publication number: CN215266141U
Application number: CN202023254091.1U
Authority: CN
Inventors: 卢科军; 杨安; 顾斌斌; 赵帅帅; 王周石; 李书贤
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-21
Anticipated expiration: 2030-12-28

Abstract

The utility model provides a plug-in circuit breaker, includes the circuit breaker casing, is equipped with first wiring terminal and second binding post respectively at the relative both ends of circuit breaker casing, and the circuit breaker casing still is equipped with the button in the one end that is equipped with first wiring terminal, is equipped with the guard flap that is used for keeping apart the wire between first wiring terminal and button, the one side of keeping away from guard flap on the button is equipped with the first arch of drawing, one side that guard flap kept away from the button is equipped with the second and draws the arch to the user can operate simultaneously first drawing arch and second and draw the arch, so that can extract the circuit breaker from the rack with great strength.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field especially relates to a plug-in circuit breaker.

Background

The plug-in circuit breaker is inserted into the cabinet to control the on-off of the circuit and break the circuit when the circuit fails, so that the circuit is protected. The button and the wiring terminal of the plug-in circuit breaker are arranged on the same side, and the compact space layout causes that the operation of the button is influenced by a connected wire, particularly the normal switching-on and switching-off operation of the button is influenced by the circuit breaker with automatic operation, so that a protective baffle is arranged between the button and the wiring terminal in the prior art. However, since the circuit breaker is generally pulled out of the cabinet by the button, when the protective barrier is provided, the user cannot easily pull out the circuit breaker from the cabinet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a plug-in circuit breaker.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a plug-in circuit breaker, includes the circuit breaker casing, is equipped with first binding post and second binding post respectively at the relative both ends of circuit breaker casing, and the circuit breaker casing still is equipped with the button in the one end that is equipped with first binding post, is equipped with the protective baffle who is used for keeping apart the wire between first binding post and button, the one side of keeping away from protective baffle on the button is equipped with the first arch of drawing, one side that protective baffle kept away from the button is equipped with the second and draws the arch.

Preferably, the circuit breaker housing is of a cuboid structure and comprises an operating surface and a rear end surface which are oppositely arranged, an upper end surface and a lower end surface which are oppositely arranged, and a first side surface and a second side surface which are oppositely arranged, the operating surface is provided with a button and a first wiring terminal, the rear end surface is provided with a second wiring terminal, the upper end surface is provided with a locking hole for extending a locking protrusion of the locking mechanism, and the button is arranged at the upper side part of the operating surface of the circuit breaker housing and is close to the upper end surface provided with the locking hole; first binding post sets up in the downside part of operation face, is equipped with the first arch of drawing in the top arch of button, draws the arch at the below arch of guard flap to be equipped with the second.

Preferably, the terminal module comprises a separately removable terminal module including a terminal housing and a first terminal disposed within the terminal housing.

Preferably, the protective baffle and the terminal housing are integrally formed.

Preferably, the circuit breaker casing includes upper cover, lower cover and the binding post casing of relative concatenation, the relative concatenation of upper cover and lower cover forms the cavity that holds contact mechanism, protection mechanism and the second binding post of circuit breaker, the binding post casing is connected with upper cover and lower cover respectively, binding post casing one end stretches into in the cavity, protective baffle is fixed with circuit breaker casing joint.

Preferably, the circuit breaker casing is formed with two protection flanks in the both sides of button, two protection flanks respectively with upper cover and lower cover integrated into one piece, guard flap is fixed with protection flank joint.

Preferably, the protective baffle is plate-shaped, is arranged on the upper side wall of the wiring terminal shell and protrudes out of one side of the wiring terminal shell, wherein the wiring terminal shell is provided with a wiring hole, the protective flank is provided with a first clamping hole, the two side edges of the protective baffle are correspondingly provided with first limiting convex ribs, and the first limiting convex ribs are clamped in the first clamping hole.

Preferably, the button is linked with the locking mechanism, and after the breaker is opened, the locking protrusion of the locking mechanism can be driven to retract into the shell of the breaker by pulling the button.

Preferably, an avoiding groove is formed on the second drawing protrusion of the protective baffle.

Preferably, the protective baffle provided with the second drawing bulge is integrally injection-molded with the circuit breaker shell; or the protective baffle is clamped and fixed with the breaker shell.

The utility model discloses a plug-in circuit breaker is equipped with the first arch of drawing on the button, is equipped with the second on guard flap and draws the arch to the user can the concurrent operation first draw the arch and draw the arch with the second, so that can extract the circuit breaker from the rack with great strength.

In addition, adopt detachable wiring terminal module for the circuit breaker can change the first binding post of different types as required, guard flap and binding post integrated into one piece, convenient assembling.

Drawings

Fig. 1 is a schematic perspective view of a plug-in type circuit breaker according to an embodiment;

FIG. 2 is a schematic view of the structure of the removal button of FIG. 1;

FIG. 3 is a side view of the first embodiment;

FIG. 4 is a schematic diagram of an internal structure of a plug-in circuit breaker according to an embodiment;

fig. 5 is a schematic view of a partial structure of a circuit breaker housing according to an embodiment.

Detailed Description

The following description will further describe a specific embodiment of the plug-in circuit breaker according to the present invention with reference to the embodiments shown in the drawings. The plug-in circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, an embodiment of a plug-in circuit breaker includes a circuit breaker housing 1, and a contact mechanism and a protection mechanism disposed in the circuit breaker housing 1, wherein a first connection terminal 31 and a second connection terminal 12 are respectively disposed at two opposite ends of the circuit breaker housing 1, the first connection terminal 31 and the second connection terminal 12 are respectively used for connecting wires, and a button 2 is disposed at one end of the circuit breaker housing 1 where the first connection terminal 31 is disposed. The plug-in circuit breakers are inserted into the cabinet side by side to control the on-off of the circuit and break the circuit when the circuit fails, so that the circuit is protected. The circuit breaker shell 1 is of a cuboid structure and comprises an operation surface and a rear end surface which are oppositely arranged, an upper end surface and a lower end surface which are oppositely arranged, and a first side surface and a second side surface which are oppositely arranged; the operation surface is provided with a button 2 and a first wiring terminal 31, the rear end surface is provided with a second wiring terminal 12, the upper end surface is provided with a locking hole 16 for the locking protrusion of the locking mechanism 6 to extend out, and the locking mechanism 6 is used for being matched with the cabinet. The first connection terminal 31 is generally a wire inlet terminal, and the second connection terminal 12 is a wire outlet terminal; of course, the first connection terminal 31 may also be an incoming/outgoing line terminal, and the second connection terminal 12 may be an incoming line terminal.

As shown in fig. 1-2, a protective baffle 4 for isolating the wires is arranged between the first connection terminal 31 and the button 2, so as to prevent the wires connected with the first connection terminal 31 from influencing the operation of the button 2; keep away from one side of guard shield 4 on the button 2 and be equipped with first drawing arch 21, one side that guard shield 4 kept away from button 2 is equipped with the second and draws arch 41 to the user can operate simultaneously first drawing arch 21 and second and draw arch 41, so that can extract the circuit breaker from the rack with great strength.

In the preferred embodiment shown in fig. 1-3, the button 2 is disposed at the upper part of the operation surface of the circuit breaker housing 1, near the upper end surface provided with the locking hole 16, and the button 2 is slidably mounted in the circuit breaker housing 1 and has one end extending out of the circuit breaker housing 1; first binding post 31 sets up the downside part at the operation panel, and guard shield 4 protrusion in operation panel is located between first binding post 31 and the button 2, and the top arch of button 2 is equipped with first arch 21 of drawing, and the below arch of guard shield 4 is equipped with the second and draws arch 41, and the first arch direction perpendicular to plug-in circuit breaker that draws arch 21 and second draw arch 41 inserts the direction of rack, and first drawing arch 21 and second draw arch 41 to the protruding extension of opposite direction.

When a user needs to operate the breaker to switch on, the button 2 can be pressed from one side of the operation surface to switch on the breaker; in a closing state, a user can pull the button 2 through the first pulling protrusion 21 to open the circuit breaker; after the user pulls the board button and makes the circuit breaker open the floodgate, need great strength can only extract the circuit breaker from the rack, only operate first drawing protruding 21 and difficultly extract the circuit breaker, can follow the upper and lower both sides at this moment and operate first drawing protruding 21 and second together and draw protruding 41 to can extract the circuit breaker with great strength. In the embodiment, the button 2 is arranged on the upper side part of the operation surface of the circuit breaker shell 1, the first wiring terminal 31 is arranged on the lower side part of the operation surface, the first drawing protrusion 21 is arranged above the button, and the second drawing protrusion 41 is arranged on the lower side of the protective baffle 4; obviously, button 2 sets up in the downside part of the operating surface of circuit breaker housing 1, and first binding post 31 sets up in the upside part of operating surface, and corresponding first drawing arch 21 locates the below of button, and the second is drawn arch 41 and is located guard flap 4 top side, also belongs to the utility model discloses a protection scope.

Preferably, a manner of implementing the protective baffle 4 provided with the second drawing protrusion 41 is that the protective baffle 4 is integrally injection-molded with the circuit breaker housing 1 (not shown in the figure), such as integrally molded with the upper cover 14 and/or the lower cover 13 of the circuit breaker housing 1; or the protective baffle 4 is clamped and fixed with the circuit breaker shell 1.

Preferably, as shown in another embodiment shown in fig. 1 to 3, the plug-in circuit breaker of this embodiment includes an independently detachable terminal module 3, the terminal module 3 includes a terminal housing 30 and a first terminal 31 disposed in the terminal housing 30, the protective shutter 4 is integrally formed with the terminal housing 30, and the protective shutter 4 is shaped like a plate and disposed on an upper side wall of the terminal housing 30 and protrudes from a side of the terminal housing 30 where the terminal hole 311 is disposed. Binding post casing 30 and the circuit breaker casing 1 joint of binding post module 3 are fixed, and first binding post 31 is connected with the conductor electricity in the circuit breaker casing 1 for the circuit breaker can change different wiring terminal types as required. For example, a terminal with a binding screw is adopted, or a plug-in type terminal without the binding screw is adopted (an elastic piece is arranged in the terminal, the conductor can be directly inserted and fixed by the elastic piece, and the elastic piece is pushed through a wire inserting hole during the wire disconnecting process to pull out the conductor). Guard flap 4 and binding post integrated into one piece, convenient assembling just is convenient for shelter from the wire, draws the dodging groove 43 that is equipped with the screwdriver of dodging the wire or taking out stitches on arch 41 at guard flap 4's second, because the structure compactness very of circuit breaker operating face sets up after arch 41 is drawn to the second and dodges groove 43, under the condition that does not influence user's original use, is convenient for be used for extracting the circuit breaker. Obviously, as another embodiment, the first connection terminal 31 may be directly disposed in the circuit breaker housing 1 composed of the upper cover 14 and the lower cover 13 without providing a separate detachable terminal module 3.

Specifically, as shown in fig. 2, the circuit breaker housing 1 includes the upper cover 14, the lower cover 13 and the binding post housing 30 that splice relatively, the cavity that holds the contact mechanism, the protection mechanism and the second binding post 12 of circuit breaker is formed to the relative concatenation of upper cover 14 and lower cover 13, binding post housing 30 one end stretches into in the cavity, is connected fixedly with upper cover 14 and lower cover 13 respectively. The protection mechanism may be one or more of a short circuit protection mechanism, an overload protection mechanism, or an earth leakage protection mechanism, or other types of protection mechanisms.

As shown in fig. 3 to 5, the protective barrier 4 is fixed to the circuit breaker case 1 by clipping. Breaker housing 1 is formed with two protection flanks 15 in button 2's both sides, two protection flanks 15 respectively with upper cover 14 and lower cover 13 integrated into one piece, guard flap 4 is fixed with protection flank 15 joint. Be equipped with first joint hole 17 on protection flank 15, correspond on the both sides side of protective barrier 4 and be equipped with first spacing protruding muscle 42, first spacing protruding muscle 42 joint is at first joint hole 17 internal fixation protective barrier 4 and binding post module 3.

Preferably, the button 2 includes a pressing plate and a button body connected to the pressing plate, the front side of the pressing plate is a pressing surface, the rear side of the pressing plate is linked with an operating mechanism in the breaker housing through the button body to realize the opening and closing operation of the breaker, the button body is in linear sliding fit with the breaker housing, and the first drawing protrusion 21 is formed above the pressing plate and protrudes from the button body. The pressing surface of the pressing button 2 enables the circuit breaker to be switched on, the indicating hole 22 is formed in the pressing surface of the pressing button 2 and used for checking the switching-on and switching-off state of the circuit breaker, and the indicating piece or the indicating lamp can be checked through the indicating hole 22 to determine the switching-on and switching-off state of the circuit breaker.

Preferably, a locking mechanism 6 is arranged inside the circuit breaker housing 1, and the locking mechanism 6 comprises a locking protrusion which extends out of a locking hole 16 on the upper end surface of the circuit breaker housing 1 and is used for being in limit fit with a cabinet to fix the circuit breaker in the cabinet; after the circuit breaker is opened, the pull button 2 can drive the locking protrusion of the locking mechanism 6 to retract into the circuit breaker shell 1. For example, the locking mechanism 6 may include a locking member provided with a locking projection and an elastic member for driving the locking projection of the locking member to protrude from the locking hole 16. After the circuit breaker is opened, when the drawing button 2 slides, the button 2 drives the locking piece to retract into the circuit breaker shell 1 by overcoming the elasticity of the elastic piece, so that the circuit breaker can be pulled out of the cabinet. The button 2 may drive the locking element directly or in an indirect manner.

Preferably, as shown in fig. 1-2, the operating surface is provided with a wire connection hole 312 and a wire disconnection hole 311 which are used in a matched manner, and the button 2 is provided with an indication hole 22 for indicating the opening and closing state; the second connection terminal 12 comprises a power connection terminal 121 and a signal connection terminal 122, the power connection terminal 121 is used for being connected to an L phase and an N phase of a power supply, and the signal connection terminal 122 is used for communicating a circuit breaker and an external upper computer and transmitting information such as opening and closing signals, current signals or voltage signals.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a plug-in circuit breaker, includes circuit breaker casing (1), is equipped with first binding post (31) and second binding post (12) respectively at the both ends that circuit breaker casing (1) is relative, and circuit breaker casing (1) still is equipped with button (2), its characterized in that in the one end that is equipped with first binding post (31): be equipped with between first binding post (31) and button (2) and be used for keeping apart protective baffle (4) of wire, the one side of keeping away from protective baffle (4) on button (2) is equipped with first drawing arch (21), one side that button (2) were kept away from in protective baffle (4) is equipped with the second and draws arch (41).

2. Plug-in circuit breaker according to claim 1, characterized in that: the circuit breaker shell (1) is of a cuboid structure and comprises an operation surface and a rear end surface which are oppositely arranged, an upper end surface and a lower end surface which are oppositely arranged, and a first side surface and a second side surface which are oppositely arranged, wherein the operation surface is provided with a button (2) and a first wiring terminal (31), the rear end surface is provided with a second wiring terminal (12), the upper end surface is provided with a locking hole (16) for a locking protrusion of a locking mechanism (6) to extend out, and the button (2) is arranged at the upper side part of the operation surface of the circuit breaker shell (1) and is close to the upper end surface provided with the locking hole (16); the first wiring terminal (31) is arranged on the lower side portion of the operation face, a first drawing protrusion (21) is arranged above the button (2) in a protruding mode, and a second drawing protrusion (41) is arranged below the protective baffle (4) in a protruding mode.

3. Plug-in circuit breaker according to claim 1, characterized in that: the terminal module comprises an independent detachable terminal module (3), wherein the terminal module (3) comprises a terminal housing (30) and a first terminal (31) arranged in the terminal housing (30).

4. A plug-in circuit breaker according to claim 3, characterized in that: the protective baffle (4) and the wiring terminal shell (30) are integrally formed.

5. Plug-in circuit breaker according to claim 4, characterized in that: breaker housing (1) is including upper cover (14), lower cover (13) and binding post casing (30) of relative concatenation, upper cover (14) and lower cover (13) splice relatively and form the cavity that holds contact mechanism, protection machanism and second binding post (12) of circuit breaker, binding post casing (30) are connected with upper cover (14) and lower cover (13) respectively, binding post casing (30) one end stretches into in the cavity, guard flap (4) are fixed with breaker housing (1) joint.

6. Plug-in circuit breaker according to claim 5, characterized in that: breaker housing (1) is formed with two protection flank (15) in the both sides of button (2), two protection flank (15) respectively with upper cover (14) and lower cover (13) integrated into one piece, guard flap (4) are fixed with protection flank (15) joint.

7. Plug-in circuit breaker according to claim 6, characterized in that: protection shield (4) become platelike, locate the last lateral wall of binding post casing (30), protrusion is equipped with one side of wiring hole (311) in binding post casing (30) be equipped with first joint hole (17) on protection flank (15), correspond on the both sides side of protection shield (4) and be equipped with first spacing protruding muscle (42), first spacing protruding muscle (42) joint is in first joint hole (17).

8. Plug-in circuit breaker according to claim 1, characterized in that: the button (2) is linked with the locking mechanism (6), and after the breaker is opened, the locking protrusion which can drive the locking mechanism (6) by pulling the button (2) is retracted into the breaker shell (1).

9. Plug-in circuit breaker according to claim 1, characterized in that: an avoiding groove (43) is arranged on the second drawing bulge (41) of the protective baffle (4).

10. Plug-in circuit breaker according to claim 1, characterized in that: the protective baffle (4) provided with the second drawing bulge (41) and the breaker shell (1) are integrally formed in an injection molding mode; or the protective baffle (4) is clamped and fixed with the breaker shell (1).