CN214313090U

CN214313090U - Plug-in circuit breaker

Info

Publication number: CN214313090U
Application number: CN202023117974.8U
Authority: CN
Inventors: 卢科军; 顾斌斌; 杨安; 王周石; 李书贤; 赵帅帅
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-09-28
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a plug-in circuit breaker, includes the circuit breaker casing, is equipped with first wiring end and second wiring end 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, still is equipped with the protection casing in the button outside, the protection casing is including the baffle that is used for sheltering from the press surface of button to and be located two flanks of button both sides respectively, and the one end and the baffle of two flanks are connected, and the other end is connected with the circuit breaker casing, the protection casing is equipped with first drawing opening and second in the top and the below of button and draws the opening.

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 used for being installed in the cabinet, controlling the on-off of the circuit and breaking the circuit when the circuit fails, so that the circuit is protected. Often, a plurality of plug-in circuit breakers are installed in the cabinet side by side, and because the space is compact, the buttons of the circuit breakers beside are easily touched by mistake. Particularly, a circuit breaker with automatic operation has an influence on system operation due to misoperation caused by manual misoperation or accidental collision of external objects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a bayonet circuit breaker with protection casing.

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

Preferably, the protection casing and circuit breaker casing fixed connection, a cavity is formed with the circuit breaker casing to the protection casing, the cavity can hold the button and carry out pressing and drawing operation of divide-shut brake.

Preferably, the baffle of the protective cover is provided with an opening for pressing the button.

Preferably, the protection casing becomes U font structure, two flanks respectively with baffle both ends are connected and are formed U font structure, and the protection casing of U font structure is drawn the opening and is drawn the opening with the second in the top and the below of button is formed first.

Preferably, the button comprises a pressing plate and a button body which are vertically connected into a T shape, the front side of the pressing plate is a pressing surface, and the button body is connected with the rear side of the pressing plate into a T shape, so that a first drawing gap and a second drawing gap are respectively formed above and below the rear side of the pressing plate.

Preferably, two flanks on be equipped with spacing boss, be equipped with spacing draw-in groove on the circuit breaker casing, the protection casing passes through spacing boss and spacing draw-in groove cooperation joint fixed mounting on the circuit breaker casing.

Preferably, the circuit breaker casing respectively is equipped with a protection curb plate in the both sides of button, two flanks and two protection curb plate one-to-ones of button both sides, two flanks flush with the lateral surface that corresponds the protection curb plate, the inboard top of two flanks is equipped with respectively to the first spacing arm that extends between two protection curb plates, the inboard below of two flanks is equipped with respectively to the spacing arm of second that extends between two protection curb plates, is equipped with the limiting plate between the first spacing arm of two flanks, forms first drawing opening between limiting plate and the baffle.

Preferably, the circuit breaker shell is equipped with two spacing arm grooves of spacing arm complex with the second on the operating surface of button, is equipped with limit baffle between two spacing arm grooves, and is equipped with inside the blocking protruding muscle at circuit breaker shell for the depth of insertion of the spacing arm of restriction second.

Preferably, a button hole for installing a button is formed in the operating surface of the breaker shell, a limiting arm groove is formed in the junction of the lower side wall of the button hole and the two protective side plates, so that a limiting baffle is formed on the lower side wall of the button hole, and the blocking convex rib is formed by a guide convex rib in sliding fit with the button.

Preferably, the outer sides of the two first limiting arms are provided with first limiting bosses, the outer sides of the two second limiting arms are provided with second limiting bosses, and the inner sides of the two protective side plates are respectively provided with first limiting clamping grooves and second limiting clamping grooves corresponding to the first limiting bosses and the second limiting bosses.

Preferably, the shield is a transparent insulating part.

Preferably, the opening corresponds to a portion of the pressing surface of the button, and an area of the opening is smaller than an area of the pressing surface.

The utility model discloses a plug-in circuit breaker installs the protection casing in the button outside, prevents the maloperation to the button, or prevents that button and external object from interfering, just the protection casing is equipped with in the top and the below of button and draws the opening and the second draws the opening, does not hinder the operation of extracting the circuit breaker from the rack.

In addition, protection casing and circuit breaker casing fixed connection, a cavity is formed with the circuit breaker casing to the protection casing, the cavity can hold the button and carry out pressing and drawing operation of divide-shut brake.

In addition, the baffle of protection casing is equipped with the opening that is used for pressing the button, does not hinder the user to press the button and carry out the combined floodgate operation.

Drawings

Fig. 1 is a schematic structural diagram of a plug-in circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a plug-in circuit breaker with a protective cover according to an embodiment of the present invention;

fig. 3 is a perspective view of a protective cover according to an embodiment of the present invention;

fig. 4 is another perspective view of a protective cover according to an embodiment of the present invention;

fig. 5 is a schematic view of an assembly structure of the plug-in circuit breaker and the protective cover according to the embodiment of the present invention;

fig. 6 is a schematic diagram of a partial internal structure of a plug-in circuit breaker according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1-4, the utility model discloses a plug-in circuit breaker, plug-in circuit breaker 1 relative both ends are equipped with first wiring end 21 and second wiring end 22 respectively, and first wiring end 21 and second wiring end 22 are used for connecting wire respectively, and plug-in circuit breaker 1 is equipped with button 3 in the one end that is equipped with first wiring end 21, is equipped with in the button 3 outside and installs protection casing 4, and protection casing 4 is used for preventing mistake touching button 3.

The following describes the embodiment of the plug-in circuit breaker according to the present invention with reference to fig. 1 to 6. The plug-in circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, in an embodiment of a plug-in circuit breaker, a first terminal 21 and a second terminal 22 are respectively arranged at two opposite ends of the plug-in circuit breaker 1, the first terminal 21 and the second terminal 22 are respectively used for connecting wires, and the plug-in circuit breaker 1 is provided with a button 3 at one end provided with the first terminal 21. 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 plug-in circuit breaker 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 3 and a first wiring end 21, the rear end surface is provided with a second wiring end 22, the upper end surface is provided with a locking hole for extending a locking protrusion of the locking mechanism 6, and the locking mechanism 6 is used for being matched with the cabinet. The first terminal 21 is generally a wire inlet terminal, and the second terminal 22 is a wire outlet terminal; of course, the first terminal 21 may also be used as an incoming/outgoing line terminal, and the second terminal 22 may be used as an incoming/outgoing line terminal. Because a plurality of plug-in circuit breakers are often arranged in the cabinet side by side, buttons of the circuit breakers beside are easy to be touched by mistake due to compact space.

As shown in fig. 2-4, the improvement point of the present application is that a protective cover 4 is further installed outside the push button 3 of the plug-in circuit breaker for preventing the push button 3 from being touched by mistake. The protection casing 4 is including being used for sheltering from the baffle 41 of button 3's press surface 31 to and be located two flanks 42 of button 3 both sides respectively, and the one end and the baffle 41 of two flanks 42 are connected, and the other end is connected with the circuit breaker casing, the protection casing 4 is equipped with first drawing opening and second drawing opening in the top and the below of button 3. The shutter 41 is used to prevent the button 3 from being touched by mistake, and the first drawing opening and the second drawing opening are used for the user to operate to pull the circuit breaker out of the cabinet.

The button 3 comprises a pressing plate 34, the front side of the pressing plate 34 is a pressing surface 31, the baffle 41 is opposite to the pressing surface 31, the rear side of the pressing plate 34 is linked with an operating mechanism in the shell of the circuit breaker through a button main body 33 to realize the opening and closing operation of the circuit breaker, the button main body is in linear sliding fit with the shell of the circuit breaker, a first drawing notch 32 convenient for drawing the button 3 is arranged above the rear side of the pressing plate 34, and a user can draw the button 3 through the first drawing notch 32 to open the circuit breaker. An avoiding inclined plane 18 is further arranged at the junction of the operating surface of the circuit breaker shell provided with the button 3 and the upper end surface of the circuit breaker shell, so that a user can draw the button 3 conveniently.

Preferably, a second drawing gap convenient for drawing the button 3 is further arranged above the rear side of the pressing plate 34, and when a user pulls the plate button to open the breaker and needs a large force to draw the breaker out of the cabinet, the first drawing gap 32 and the second drawing gap can be operated together from the upper side and the lower side of the button 3, so that the breaker can be drawn out with a large force.

Preferably, the button 3 is T-shaped, and includes a pressing plate 34 and a button body 33 vertically connected to form a T-shape, and the button body 33 is connected to the rear side of the pressing plate 34 to form a T-shape, so that a first drawing gap 32 and a second drawing gap are formed above and below the rear side of the pressing plate 34, respectively, for a user to operate, and the circuit breaker can be drawn out with a large force.

As shown in fig. 3-4, in the first embodiment of the protection cover 4, the protection cover 4 of this embodiment is in a U-shaped structure, the protection cover 4 includes a baffle 41 and two side wings 42 connected to two ends of the baffle 41, respectively, the baffle 41 is located in front of the button 3 and is disposed opposite to the pressing surface 31 of the button 3, the two side wings 42 are located on two sides of the button 3, respectively, the two side wings 42 are connected to the circuit breaker housing, and the protection cover 4 in the U-shaped structure forms a first drawing opening and a second drawing opening above and below the button 3 and respectively correspond to the first drawing notch 32 and the second drawing notch of the button 3, so that after the protection cover 4 is disposed, the user is not affected to operate the button to draw out the circuit breaker.

As another improvement point of the present invention, the protective cover 4 is fixedly connected to the circuit breaker housing, and the protective cover 4 and the circuit breaker housing form a cavity, and the cavity can accommodate the button 3 for pressing and pulling operations of the opening and closing. The plug-in circuit breaker 1 may be connected to the protective cover 4 through a housing or any part of the housing, which is not limited herein.

Preferably, the shutter 41 of the protection cover 4 is provided with an opening 421 for pressing the button 3. When a user needs to operate the breaker to switch on, the button 3 can be pressed through the opening 421, only a small object just touches the button 3 through the opening 421, the button can be pressed by mistake, and the position, which is not the opening 421, touched by a large object or the small object can be blocked by the baffle 41, so that the button 3 is prevented from being touched by mistake. Preferably, the opening 421 corresponds to a portion of the pressing surface 31 of the button 3, and an area of the opening 421 is smaller than an area of the pressing surface 31. When a user needs to operate the breaker opening, the breaker can be opened through the first drawing gap 32 of the first drawing opening operation button 3. After the circuit breaker is opened, when a user needs to pull out the circuit breaker, the first drawing gap 32 and the second drawing gap of the opening operating button 3 can be drawn through the first drawing opening and the second drawing opening, and the circuit breaker can be pulled out with large force.

Preferably, the protective cover 4 is fixedly mounted with the circuit breaker housing in a clamping manner. The two side wings 42 of the protective cover 4 are respectively provided with a limiting boss, the side surface of the breaker shell is provided with a limiting clamping groove matched with the limiting boss, and the protective cover 4 can be fixedly connected with the breaker shell through the limiting boss and the limiting clamping groove on the plug-in breaker 1.

Specifically, as shown in fig. 3 to 6, in the preferred embodiment, two protection side plates 17 are respectively disposed on two sides of the button 3 of the circuit breaker housing, the two side wings 42 correspond to the two protection side plates 17 on two sides of the button 3 one by one, and the two protection side plates 17 are provided with limiting slots matched with the limiting bosses. Preferably, two flanks 42 level with the lateral surface that corresponds protection curb plate 17, the inboard top of two flanks 42 is equipped with respectively to the first spacing arm 43 that extends between two protection curb plates 17, the inboard below of two flanks 42 is equipped with respectively to the spacing arm 47 of second that extends between two protection curb plates 17, be equipped with limiting plate 44 between the first spacing arm 43 of two flanks 42 to improve the intensity of protection casing, form first drawing opening between limiting plate 44 and the baffle 41. The outer sides of the two first limiting arms 43 are provided with first limiting bosses 46, the outer sides of the two second limiting arms 47 are provided with second limiting bosses 45, and the inner sides of the two protective side plates 17 are respectively provided with first limiting clamping grooves 12 and second limiting clamping grooves 13 corresponding to the first limiting bosses 46 and the second limiting bosses 45 so as to fixedly install the protective cover on the shell of the circuit breaker.

Preferably, the circuit breaker casing is equipped with the preceding terminal surface of button 3 and is the operating surface, the operating surface is the plane, is equipped with the button hole that is used for installing button 3 on the operating surface, and be equipped with on the operating surface with two spacing arm grooves of the spacing arm of second 47 complex, is equipped with limit baffle 14 between two spacing arm grooves for the protection casing improves the intensity of protection casing, and is equipped with in circuit breaker casing inside and blocks protruding muscle 19, is used for restricting the depth of insertion of the spacing arm of second 47. Preferably, the limit baffle 14 is a lower side wall of the button hole 11, a limit arm groove is formed at a junction of the lower side wall of the button hole 11 and the two protection side plates 17, so that the lower side wall of the button hole 11 forms the limit baffle 14, a blocking convex rib 19 corresponding to the limit arm groove is arranged in the breaker shell and used for limiting the insertion depth of the second limit arm 47, the blocking convex rib 19 is formed by a guide convex rib in sliding fit with the button 3, and the button 3 moves when being pressed and pulled and is matched with the guide convex rib. Two flanks 42 of the protection cover 4 are assembled between two protection side plates 17, a first limit boss 46 and a second limit boss 45 are respectively clamped in the first limit clamping groove 12 and the second limit clamping groove 13, a second limit arm 47 is clamped between the lower side wall of the button hole 11 and the two protection side plates 17 and is limited and protected by a limit baffle 14, and the first limit arm 43 is protected by a limit plate 44.

Preferably, the protective cover 4 is a transparent insulating part.

In this embodiment, it is preferable that the side wing 42 is flush with the outer side surface of the protective side plate 17, and it is needless to say that the side wing 42 is disposed inside or outside the side plate 17. In addition, set up spacing draw-in groove on the flank 42, set up spacing boss on curb plate 17, perhaps the protection casing is connected with circuit breaker casing with other modes and all belongs to the utility model discloses a protection scope.

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 the circuit breaker casing, is equipped with first wiring end (21) and second wiring end (22) respectively at the both ends that the circuit breaker casing is relative, and the circuit breaker casing still is equipped with button (3), its characterized in that in the one end that is equipped with first wiring end (21): still be equipped with protection casing (4) in button (3) outside, protection casing (4) are including baffle (41) that are used for sheltering from press surface (31) of button (3) to and be located two flank (42) of button (3) both sides respectively, and the one end and the baffle (41) of two flank (42) are connected, and the other end is connected with the circuit breaker casing, protection casing (4) are equipped with first drawing opening and second in the top and the below of button (3) and draw the opening.

2. Plug-in circuit breaker according to claim 1, characterized in that: protection casing (4) and circuit breaker casing fixed connection, protection casing (4) and circuit breaker casing form a cavity, the cavity can hold button (3) and carry out pressing and drawing operation of divide-shut brake.

3. Plug-in circuit breaker according to claim 1, characterized in that: an opening (421) for pressing the button (3) is arranged on the baffle (41) of the protective cover (4).

4. A plug-in circuit breaker as claimed in claim 1, 2 or 3, characterized in that: protection casing (4) become U font structure, two flank (42) respectively with baffle (41) both ends are connected and are formed U font structure, and protection casing (4) of U font structure are drawn the opening and are drawn the opening with the second in the top and the below of button (3) first drawing.

5. Plug-in circuit breaker according to claim 1, characterized in that: the button (3) comprises a pressing plate (34) and a button main body (33) which are vertically connected into a T shape, the front side of the pressing plate (34) is a pressing surface (31), and the button main body (33) and the rear side of the pressing plate (34) are connected into the T shape, so that a first drawing gap (32) and a second drawing gap are formed above and below the rear side of the pressing plate (34) respectively.

6. Plug-in circuit breaker according to claim 4, characterized in that: two flank (42) on be equipped with spacing boss, be equipped with spacing draw-in groove on the circuit breaker casing, protection casing (4) are through spacing boss and spacing draw-in groove cooperation joint fixed mounting on the circuit breaker casing.

7. Plug-in circuit breaker according to claim 6, characterized in that: the circuit breaker casing respectively is equipped with a protection curb plate (17) in the both sides of button (3), two flanks (42) and two protection curb plate (17) one-to-one of button (3) both sides, two flanks (42) flush with the lateral surface that corresponds protection curb plate (17), the inboard top of two flanks (42) is equipped with respectively to first spacing arm (43) that extend between two protection curb plates (17), the inboard below of two flanks (42) is equipped with respectively to the spacing arm (47) of second that extend between two protection curb plates (17), be equipped with limiting plate (44) between first spacing arm (43) of two flanks (42), form first drawing opening between limiting plate (44) and baffle (41).

8. Plug-in circuit breaker according to claim 7, characterized in that: the circuit breaker shell is equipped with two spacing arm grooves of second spacing arm (47) complex on the operating surface of button (3), is equipped with between two spacing arm grooves spacing baffle (14), and is equipped with inside the circuit breaker shell and blocks protruding muscle (19) for the depth of insertion of restriction second spacing arm (47).

9. Plug-in circuit breaker according to claim 8, characterized in that: the operating surface of the breaker shell is provided with a button hole (11) for installing the button (3), a limiting arm groove is formed in the junction of the lower side wall of the button hole (11) and the two protective side plates (17), so that the lower side wall of the button hole (11) forms a limiting baffle (14), and the blocking convex rib (19) is formed by a guide convex rib in sliding fit with the button (3).

10. Plug-in circuit breaker according to claim 7, characterized in that: the outer sides of the two first limiting arms (43) are provided with first limiting bosses (46), the outer sides of the two second limiting arms (47) are provided with second limiting bosses (45), and the inner sides of the two protective side plates (17) are respectively provided with first limiting clamping grooves (12) and second limiting clamping grooves (13) corresponding to the first limiting bosses (46) and the second limiting bosses (45).

11. Plug-in circuit breaker according to claim 1, characterized in that: the protective cover (4) is a transparent insulating part.

12. A plug-in circuit breaker according to claim 3, characterized in that: the opening (421) corresponds to a portion of the pressing surface (31) of the button (3), and the area of the opening (421) is smaller than the area of the pressing surface (31).