CN215266139U

CN215266139U - Plug-in circuit breaker

Info

Publication number: CN215266139U
Application number: CN202023196101.0U
Authority: CN
Inventors: 卢科军; 顾斌斌; 杨安; 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: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-12-21
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a plug-in circuit breaker, includes the circuit breaker casing, is equipped with first wiring end and second binding post respectively at the both ends that the circuit breaker casing is relative, and the circuit breaker casing still is equipped with the button in the one end that is equipped with first wiring end, be equipped with the first arch of drawing on the button, its characterized in that: the circuit breaker casing is equipped with the second in the one end that is equipped with the button and keeps away from first bellied one side of drawing and draws the arch, and first drawing arch and second draw the bellied protruding direction perpendicular to plug-in circuit breaker and insert the direction of rack, and first drawing arch and second draw protruding to the protruding extension of opposite direction to 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 breakers are inserted into a cabinet to control the on-off of a circuit and break the circuit when the circuit fails, so that the circuit is protected, a plurality of plug-in circuit breakers are usually inserted into the cabinet side by side, the circuit breakers are generally pulled out of the cabinet through pull rings or buttons, the space of the circuit breakers is limited due to the fact that the circuit breakers are basically attached to each other, the pull rings or the buttons are arranged to be relatively small, and users are often difficult to pull when pulling.

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 wiring end and second binding post respectively at the both ends that the circuit breaker casing is relative, and the circuit breaker casing still is equipped with the button in the one end that is equipped with first wiring end, be equipped with the first arch of drawing on the button, its characterized in that: the circuit breaker casing is equipped with the second in the one end that is equipped with the button and keeps away from the first bellied one side of drawing and draws the arch, and first drawing arch and second draw the bellied direction perpendicular to plug-in circuit breaker of bellied direction and insert the direction of rack, and first drawing arch and second draw protruding to opposite direction protruding extension.

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, and the below arch of the one end that is equipped with the button at the circuit breaker casing is equipped with the second and draws the arch.

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 second drawing protrusion is provided on the terminal housing.

Preferably, the circuit breaker casing includes upper cover, lower cover and the binding post casing of relative concatenation, the cavity that contact mechanism, protection mechanism and the second binding post that hold the circuit breaker is formed to the relative concatenation of upper cover and lower cover, the binding post casing is connected with upper cover and lower cover respectively.

Preferably, the one end that plug-in circuit breaker was equipped with button and first binding post is the operating surface, and button slidable mounting is outside the circuit breaker casing and one end stretches out the circuit breaker casing in the circuit breaker casing, the part protrusion that the operating surface was equipped with first binding post is in the part that is equipped with the button, and all not protrusion is equipped with first binding post's part in the operating surface when button divide-shut brake sliding operation.

Preferably, the button comprises a pressing plate and a button body connected with 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 shell through the button body to realize the opening and closing operation of the breaker, and when the button is pulled to separate the breaker, the pressing surface of the button is flush with the part of the operating surface, which is provided with the first wiring terminal.

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, the operating surface is provided with a wire connecting hole and a wire disconnecting hole which are used in a matched mode, and the button is provided with an indicating hole for indicating the opening and closing state; the second connecting terminal comprises a power connecting terminal and a signal connecting terminal; and the lower end face is provided with a raised guide convex rib.

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, the first wiring terminal is arranged at the upper side part of the operating surface and is close to the upper end surface provided with the locking hole, and the button is arranged at the lower side part of the operating surface of the circuit breaker housing; the lower protrusion of the button is provided with a first drawing protrusion, and the upper protrusion of one end of the circuit breaker shell provided with the button is provided with a second drawing protrusion.

The utility model discloses a plug-in circuit breaker is equipped with the first arch of drawing on the button, draws the arch being equipped with the second at the circuit breaker casing 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, a detachable terminal module is adopted, so that the circuit breaker can replace different types of first terminal blocks according to the requirement.

In addition, the part which is provided with the first wiring terminal and does not protrude out of the operation surface when the button is switched on and off in a sliding mode, and the button is prevented from being touched by mistake during wiring.

Drawings

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

fig. 2 is a side view of the plug-in circuit breaker of the first embodiment;

fig. 3 is a schematic structural view of an operation surface of the plug-in type circuit breaker according to the first embodiment;

fig. 4 is a schematic structural view of a rear end surface of the plug-in type circuit breaker according to the first embodiment;

fig. 5 is a side view of the plug-in type circuit breaker of the second 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 first drawing protrusion 21 is disposed on the button 2, a second drawing protrusion 32 is disposed on one side of the circuit breaker housing 1 away from the first drawing protrusion 21 and at one end where the button 2 is disposed, a protruding direction of the first drawing protrusion 21 and the second drawing protrusion 32 is perpendicular to a direction in which the plug-in circuit breaker is inserted into the cabinet, and the first drawing protrusion 21 and the second drawing protrusion 32 are protrudingly extended in opposite directions, so that a user can simultaneously operate the first drawing protrusion 21 and the second drawing protrusion 32, so that the circuit breaker can be pulled out from the cabinet with a large force.

As shown in fig. 1-4, in the first preferred embodiment, 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; the first connecting terminal 31 is arranged at the lower side part of the operation surface, a first drawing bulge 21 is convexly arranged above the button 2, and a second drawing bulge 32 is convexly arranged below one end of the circuit breaker shell 1, which is provided with the button 2.

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 pulling plate button makes the circuit breaker open the brake, need great strength can only extract the circuit breaker from the rack, only operate first draw protruding 21 difficult to extract the circuit breaker, can follow the circuit breaker about both sides operate first draw protruding 21 and second draw protruding 32 together this moment to can extract the circuit breaker with great strength.

Preferably, as shown in fig. 1 to 3, the plug-in circuit breaker of the present embodiment includes a separately detachable terminal module 3, and the terminal module 3 includes a terminal housing 30 and a first terminal 31 disposed in the terminal housing 30. 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).

Breaker housing 1 includes upper cover 14, lower cover 13 and the 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 mechanism and the second binding post 12 of circuit breaker, binding post casing 30 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. 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.

Preferably, as shown in fig. 1-2, the end of the plug-in circuit breaker provided with the button 2 and the first connection terminal 31 is an operation surface, the button 2 is slidably mounted in the circuit breaker housing 1, and one end of the button extends out of the circuit breaker housing 1, the part of the operation surface provided with the first connection terminal 31 protrudes out of the part provided with the button 2, and the part of the operation surface provided with the first connection terminal 31 does not protrude out of the operation surface when the switch 2 is opened and closed, so that the button 2 is prevented from being touched by mistake during wiring.

Specifically, the button 2 comprises a pressing plate 24 and a button main body 25 connected with the pressing plate 24, the front side of the pressing plate 24 is a pressing surface 23, the rear side of the pressing plate 24 is linked with an operating mechanism in the breaker shell through the button main body 25 to realize the opening and closing operation of the breaker, the button main body 25 is in linear sliding fit with the breaker shell, and the first drawing protrusion 21 is formed by protruding the upper part of the pressing plate 24 from the button main body 25. When the pressing surface 23 of the button 2 is pressed to close the circuit breaker, the pressing surface 23 of the button 2 moves towards one end of the second connecting terminal 12 to drive the circuit breaker to close; when the button 2 is pulled to open the circuit breaker, the pressing surface 23 on the front side of the button 2 is flush with or close to the level of the portion of the operating surface where the first connecting terminal 31 is arranged (slightly retracted towards one end of the second connecting terminal 12), so that the circuit breaker can be conveniently pulled out of the cabinet by operating the first pulling protrusion 21 and the second pulling protrusion 32.

Preferably, an indication hole is formed in the pressing surface 23 of the button 2 and used for checking the switching-on and switching-off state of the circuit breaker, and an indication piece or an indication lamp can be checked through the indication hole so as 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. 3-4, 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 switching-on/off 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. As shown in fig. 2, a raised guide rib 17 is provided on the lower end surface for guiding the insertion of the circuit breaker into the cabinet.

As shown in fig. 5, the second embodiment is substantially the same as the first embodiment except that the second drawing projection 32 is located above the circuit breaker and the first drawing projection 21 on the push button 2 is located below the circuit breaker. Specifically, the circuit breaker housing 1 is a cuboid structure, and includes 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 extending a locking protrusion of the locking mechanism 6, the first wiring terminal 31 is arranged at the upper side part of the operation surface and is close to the upper end surface provided with the locking hole 16, and the button 2 is arranged at the lower side part of the operation surface of the circuit breaker housing 1; a first drawing protrusion 21 is convexly arranged below the button 2, and a second drawing protrusion 32 is convexly arranged above one end of the circuit breaker housing 1, which is provided with the button 2.

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 wiring end (11) and second binding post (12) respectively at circuit breaker casing (1) relative both ends, and circuit breaker casing (1) still is equipped with button (2) in the one end that is equipped with first wiring end (11), be equipped with on button (2) first draw protruding (21), its characterized in that: the circuit breaker shell (1) is equipped with the second at the one end that is equipped with button (2) and keeps away from first one side of drawing protruding (21) and draw protruding (32), and the protruding direction perpendicular to plug-in circuit breaker of protruding (32) is drawn to first drawing protruding (21) and second inserts the direction of rack, and first drawing protruding (21) and second draw protruding (32) to opposite direction protruding extension.

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); first binding post (31) set up the downside part at the operation panel, are equipped with first drawing arch (21) in the top arch of button (2), and the below arch that is equipped with the one end of button (2) in circuit breaker casing (1) is equipped with the second and draws arch (32).

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 second drawing protrusion (32) is arranged on the terminal housing (30).

5. A plug-in circuit breaker according to claim 3, 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 mechanism and second binding post (12) of circuit breaker, binding post casing (30) are connected with upper cover (14) and lower cover (13) respectively.

6. Plug-in circuit breaker according to claim 1, characterized in that: one end that plug-in circuit breaker was equipped with button (2) and first binding post (31) is the operation panel, and button (2) slidable mounting is outside in circuit breaker casing (1) and one end stretches out circuit breaker casing (1), the part protrusion that the operation panel was equipped with first binding post (31) is in the part that is equipped with button (2), and button (2) divide-shut brake sliding operation is time all not protruding the part that is equipped with first binding post (31) in the operation panel.

7. Plug-in circuit breaker according to claim 6, characterized in that: the button (2) comprises a pressing plate (24) and a button body (25) connected with the pressing plate (24), the front side of the pressing plate (24) is a pressing surface (23), the rear side of the pressing plate (24) is linked with an operating mechanism in a breaker shell through the button body (25) to realize the opening and closing operation of the breaker, and when the button (2) is pulled to open the breaker, the pressing surface (23) of the button (2) is flush with the part of the operating surface, which is provided with the first wiring terminal (31).

8. Plug-in circuit breaker according to claim 2, 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 2, characterized in that: a wire connecting hole (312) and a wire disconnecting hole (311) which are used in a matched mode are formed in the operating surface, and an indicating hole (22) used for indicating the opening and closing state is formed in the button (2); the second connecting terminal (12) comprises a power connecting terminal (121) and a signal connecting terminal (122); and a raised guide convex rib (17) is arranged on the lower end surface.

10. 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, the first wiring terminal (31) is arranged on the upper side part of the operation surface and is close to the upper end surface provided with the locking hole (16), and the button (2) is arranged on the lower side part of the operation surface of the circuit breaker shell (1); the lower protrusion of the button (2) is provided with a first drawing protrusion (21), and the upper protrusion of one end of the breaker shell (1) provided with the button (2) is provided with a second drawing protrusion (32).