CN218241725U

CN218241725U - Reclosing plastic case circuit breaker

Info

Publication number: CN218241725U
Application number: CN202221653177.8U
Authority: CN
Inventors: 陈浩; 徐通通
Original assignee: Zhuowen Information Technology Co ltd
Current assignee: Zhuowen Information Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-01-06
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a reclosing molded case circuit breaker, which comprises a shell, a switching-on and switching-off handle arranged in the shell and a driving mechanism for driving the switching-on and switching-off handle to act, wherein the shell comprises an upper cover, and a switching-on and switching-off indicating mechanism linked with the switching-on and switching-off handle is arranged in the upper cover; the switching-on and switching-off indicating mechanism comprises an indicating turntable which is rotatably clamped on the upper cover and a driving rod which is fixedly connected with the switching-on and switching-off handle, the driving rod is in linkage connection with the indicating turntable, a display window is formed in the upper cover, a switching-off indicating area and a switching-on indicating area are arranged on the indicating turntable, the indicating turntable is driven by the driving rod to rotate when the switching-on and switching-off handle acts, the switching-on and switching-off indicating area is opposite to the display window when the switching-on and switching-off handle is at a switching-on position, and the switching-on indicating area is opposite to the display window when the switching-on and switching-off handle is at a switching-off position. The utility model discloses well reclosing lock moulded case circuit breaker through the structure process optimal design to closing a floodgate indicating mechanism, makes its structure simplify, and the equipment is convenient, instructs accurately, has fine practicality.

Description

Reclosing plastic case circuit breaker

Technical Field

The utility model relates to a reclosing molded case circuit breaker belongs to circuit breaker design technical field.

Background

The reclosing molded case circuit breaker can realize automatic reclosing operation, can realize remote control, enables the circuit breaker to carry out automatic closing and opening, does not need a worker to go to on-site manual opening and closing operation, is more intelligent compared with a conventional molded case circuit breaker, is more convenient to use, and is widely used in a smart power grid at present. In the reclosing molded case circuit breaker, a conventional molded case circuit breaker structure (a contact system, an arc extinguishing system, a tripping protection system, a switching-on and switching-off handle and the like are arranged inside) is usually adopted between a base and a middle base, a reclosing mechanism is arranged between the middle base and an upper cover, and the switching-on and switching-off handle is linked with the reclosing mechanism, so that the purpose of switching-on and switching-off actions of the switching-on and switching-off handle driven by the reclosing mechanism is achieved. At present, most reclosing molded case circuit breakers are provided with an on-off state indicating mechanism which adopts a middle structure of a conventional molded case circuit breaker, and an on-off indicating device of a circuit breaker disclosed in patent document CN205645711U comprises a support, an indicating component and a linkage component, wherein the support is provided with an accommodating cavity for installing the indicating component, a sleeve communicated with the accommodating cavity is arranged on the lower end face of the support, the indicating component comprises a main shaft, an indicating piece and a torsion spring, one end of the torsion spring is clamped in a groove of the indicating piece, the other end of the torsion spring is clamped on the inner wall of the accommodating cavity, the linkage component comprises a linkage rod, a spring sleeved on the upper part of the linkage rod and a roller movably arranged on the lower end of the linkage rod, the upper part of the linkage rod is clamped in the sleeve, the upper end of the linkage rod penetrates through the sleeve and abuts against the lower end face of the indicating piece, the roller abuts against the upper end face of a moving contact of the circuit breaker, the linkage rod acts on the sleeve and slides in the sleeve and can push the indicating piece to rotate around the main shaft, so as to realize on-off indication of the circuit breaker. The switching-on/off indicating device in the patent document can visually indicate the switching-on/off state of the circuit breaker, but the number of the components is relatively large, the structure is relatively complex, the assembly is complicated during production, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

To pointing out not enough in the background art, the utility model aims at providing a reclosing moulded case circuit breaker rational in infrastructure optimizes through the structure to its divide-shut brake indicating mechanism, makes its structure simplify, convenient equipment.

Realize the utility model discloses purpose technical scheme is:

a reclosing molded case circuit breaker comprises a shell, a switching-on and switching-off handle arranged in the shell and a driving mechanism for driving the switching-on and switching-off handle to act, wherein the shell comprises an upper cover, and a switching-on and switching-off indicating mechanism linked with the switching-on and switching-off handle is arranged in the upper cover; the switching-off and switching-on indicating mechanism comprises an indicating turntable which is rotatably clamped on the upper cover and a driving rod which is fixedly connected with the switching-off and switching-on handle, the driving rod is in linkage connection with the indicating turntable, a display window is formed in the upper cover, a switching-off indicating area and a switching-on indicating area are arranged on the indicating turntable, the switching-off and switching-on handle drives the indicating turntable to rotate through the driving rod when acting, the switching-off indicating area is opposite to the display window when the switching-off and switching-on handle is at a switching-on position, and the switching-on indicating area is opposite to the display window when the switching-off and switching-on handle is at a switching-on position.

Among the above-mentioned technical scheme, the shaping of center department has the bellied location axle that makes progress and centers on the instruction carousel two at least arc card holes that the location axle set up, two at least arc card holes distribute and encircle on the same circumference of location axle, cover on the shaping have with location axle grafting complex locating hole and at least two buckles that correspond the joint with each arc card hole, buckle downwardly extending blocks arc card hole and makes the instruction carousel rotate upper cover relatively in the angle of injecing, the angle of injecing with drive during the divide-shut handle action the turned angle phase-match of instruction carousel.

In the technical scheme, the lower part of the indicating turntable is provided with two limiting columns protruding downwards, the driving rod is transversely fixed on the side part of the opening and closing handle, and the end part of the driving rod extends into a gap between the two limiting columns.

In the above technical solution, a positioning sleeve is formed on the upper cover and coaxially arranged with the positioning shaft, and a positioning convex ring coaxially sleeved with the positioning sleeve is formed on the indicating turntable; the periphery of the lower end of the positioning sleeve abuts against the upper plane of the indicating turntable, and the lower end face of the positioning sleeve is an arc surface protruding downwards.

In the above technical scheme, the number of the arc-shaped clamping holes is 2 to 3, and the number of the corresponding buckles is 2 to 3.

The utility model discloses has positive effect: the utility model discloses well reclosing lock moulded case circuit breaker structure is through the optimal design, specifically through fixing the actuating lever on the divide-shut handle, and then links through actuating lever and instruction carousel, drives the rotation of instruction carousel when the divide-shut handle moves, when the divide-shut handle reachs the position of separating brake the relative this state of current circuit breaker of separating brake indication zone with the display window is the state of separating brake, when the divide-shut handle is in the position of closing brake the relative this state of current circuit breaker of display window in the combined brake indication zone with the display window is the state of closing brake; and the indicating rotary disc is connected with the upper cover in a clamping manner to realize the installation of the indicating rotary disc, so that an additional connecting part between the indicating rotary disc and the upper cover is omitted, the assembling process is simplified, and the production cost is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic diagram of a three-dimensional structure of a medium reclosing molded case circuit breaker of the present invention;

fig. 2 is a partial sectional view of the switching-on/switching-off indicating mechanism of the present invention;

FIG. 3 is a partial view of the upper cover of the present invention where the opening and closing indication mechanism is installed;

fig. 4 is a top view of the indicating dial of the present invention;

fig. 5 is a perspective view of the indicating dial of fig. 4.

The reference symbols shown in the figures are: the device comprises a shell 1, an upper cover 11, a display window 111, a positioning hole 112, a buckle 113, a positioning sleeve 114, a switching-on/off handle 2, a driving rod 21, an indicating turntable 3, a switching-off indicating area 31, a switching-on indicating area 32, a positioning shaft 33, an arc-shaped clamping hole 34, a limiting column 35 and a positioning convex ring 36.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings; wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

As shown in fig. 1 to 5, the reclosing molded case circuit breaker in the embodiment includes a housing 1, a switching handle 2 disposed in the housing 1, and a driving mechanism for driving the switching handle 2 to move, where the housing 1 includes an upper cover 11, and a switching indication mechanism linked with the switching handle 2 is installed in the upper cover 11; the switching-on/off indicating mechanism comprises an indicating turntable 3 and a driving rod 21, wherein the indicating turntable 3 is rotatably clamped on the upper cover 11, the driving rod 21 is fixedly connected with the switching-on/off handle 2, the driving rod 21 is in linkage connection with the indicating turntable 3, a display window 111 is formed in the upper cover 11, a switching-off indicating area 31 and a switching-on indicating area 32 are arranged on the indicating turntable 3, the indicating turntable 3 is driven to rotate through the driving rod 21 during the action of the switching-on/off handle 2, the switching-on/off handle 2 is located at a switching-on position, the switching-on indicating area 31 is opposite to the display window 111, and the switching-on indicating area 32 is opposite to the display window 111 when the switching-on/off handle 2 is located at a switching-on position. In the embodiment, the driving rod 21 is fixed on the opening and closing handle 2, and then the driving rod 21 is linked with the indicating turntable 3, so that the indicating turntable 3 is driven to rotate when the opening and closing handle 2 acts, when the opening and closing handle 2 reaches the opening position, the opening indicating area 31 is opposite to the display window 111, so that the current state of the circuit breaker is the opening state, and when the opening and closing handle 2 is at the closing position, the closing indicating area 32 is opposite to the display window 111, so that the current state of the circuit breaker is the closing state; and through setting up that the dial 3 links to each other with upper cover 11 with the mode of joint, save extra adapting unit between the two, simplify the equipment process, practice thrift manufacturing cost. The opening indication area 31 is marked with an opening character, and the closing indication area 32 is marked with a closing character.

As shown in fig. 2 to 5, in this embodiment, an upward protruding positioning shaft 33 and at least two arc-shaped clamping holes 34 surrounding the positioning shaft 33 are formed in the center of the indication dial 3, the at least two arc-shaped clamping holes 34 are distributed on the same circumference surrounding the positioning shaft 33, a positioning hole 112 in insertion fit with the positioning shaft 33 and at least two buckles 113 correspondingly clamped with the arc-shaped clamping holes 34 are formed in the upper cover 11, the buckles 113 extend downward and are clamped into the arc-shaped clamping holes 34, so that the indication dial 3 can rotate relative to the upper cover 11 within a limited angle, and the limited angle is matched with a rotation angle of the indication dial 3 when the opening and closing handle 2 acts. The rotation center of the indication rotary disc 3 is positioned by the matching of the positioning shaft 33 and the positioning hole 112, the indication rotary disc 3 and the upper cover 11 can be quickly assembled and connected by the matching of the buckle 113 and the arc-shaped clamping hole 34, and the rotation angle (also the limited angle) of the indication rotary disc 3 relative to the upper cover 11 is limited by the relative rotation angle of the buckle 113 in the arc-shaped clamping hole 34, the rotation angle of the indication rotary disc 3 relative to the upper cover 11 is matched by setting the limited angle and the rotation angle of the indication rotary disc 3 driven when the opening and closing handle 2 acts, so that the buckle 113 just moves to the corresponding end part in the arc-shaped clamping hole 34 when the opening and closing handle 2 reaches the opening and closing position, the indication rotary disc 3 is limited under the state, and the accuracy of the opening and closing state indication is not influenced by deflection.

Further, as shown in fig. 2, two limiting posts 35 protruding downward are arranged at the lower part of the indicating dial 3, the driving rod 21 is fixed at the side part of the opening and closing handle 2 along the transverse direction, and the end part of the driving rod extends into a gap between the two limiting posts 35, when the opening and closing handle 2 acts, the driving rod 21 generates thrust to the limiting posts 35 at the corresponding side, so as to drive the indicating dial 3 to rotate; in order to enhance the strength of the limiting column 35, a reinforcing rib can be arranged between the limiting column 35 and the indicating rotary disc 3. The driving rod 21 can be a stainless steel rod or an iron rod, and can be fixed on the split-combination handle 2 in the modes of interference riveting, threaded connection, welding and the like.

As shown in fig. 2, in this embodiment, a positioning sleeve 114 coaxially disposed with the positioning shaft 33 is formed on the upper cover 11, a positioning convex ring 36 coaxially sleeved with the positioning sleeve 114 is formed on the indicating turntable 3, and the positioning of the indicating turntable 3 is enhanced by the cooperation between the positioning convex ring 36 and the positioning sleeve 114; the periphery of the lower end of the positioning sleeve 114 abuts against the upper plane of the indicating turntable 3, and the lower end face of the positioning sleeve 114 is a downward convex arc surface, so that the contact surface between the lower end of the positioning sleeve 114 and the indicating turntable 3 is reduced, and further the friction resistance between the positioning sleeve 114 and the indicating turntable 3 is reduced, so that the indicating turntable 3 can rotate flexibly.

As shown in fig. 5, the number of the arc-shaped fastening holes 34 in this embodiment is 2, and the number of the corresponding fasteners 113 is 2; in practical applications, the number of the arc-shaped fastening holes 34 may also be set to 3, and the corresponding number of the fasteners 113 is also set to 3.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. A reclosing molded case circuit breaker comprises a shell (1), a switching-on and switching-off handle (2) arranged in the shell (1) and a driving mechanism for driving the switching-on and switching-off handle (2) to act, wherein the shell (1) comprises an upper cover (11), and a switching-on and switching-off indicating mechanism linked with the switching-on and switching-off handle (2) is arranged in the upper cover (11); the switching-on/off indicating mechanism is characterized by comprising an indicating turntable (3) and a driving rod (21), wherein the indicating turntable (3) is rotatably clamped on an upper cover (11) and the driving rod (21) is fixedly connected with a switching-on/off handle (2) in a fixing mode, the driving rod (21) is in linkage connection with the indicating turntable (3), a display window (111) is formed in the upper cover (11), a switching-off indicating area (31) and a switching-on indicating area (32) are arranged on the indicating turntable (3), the switching-on/off handle (2) drives the indicating turntable (3) to rotate through the driving rod (21) during action, the switching-on/off handle (2) is located at a switching-on position, the switching-off indicating area (31) is opposite to the display window (111), and the switching-on indicating area (32) is opposite to the display window (111) when the switching-on/off handle (2) is located at a switching-on position.

2. The reclosure molded case circuit breaker according to claim 1, wherein the indicating turntable (3) is formed with a positioning shaft (33) protruding upward and at least two arc-shaped clamping holes (34) formed around the positioning shaft (33) at the center, the at least two arc-shaped clamping holes (34) are distributed on the same circumference surrounding the positioning shaft (33), the upper cover (11) is formed with a positioning hole (112) in insertion fit with the positioning shaft (33) and at least two buckles (113) correspondingly clamped with the arc-shaped clamping holes (34), the buckles (113) extend downward and are clamped into the arc-shaped clamping holes (34) so that the indicating turntable (3) can rotate relative to the upper cover (11) within a limited angle, and the limited angle is matched with the rotation angle of the indicating turntable (3) driven when the opening and closing handle (2) acts.

3. The reclosure molded case circuit breaker according to claim 2, wherein the lower portion of the indicating dial (3) is provided with two limiting posts (35) protruding downward, the driving rod (21) is fixed on the side portion of the opening and closing handle (2) along the transverse direction, and the end portion of the driving rod extends into the gap between the two limiting posts (35).

4. The reclosing molded case circuit breaker according to claim 2, wherein the upper lid (11) is formed with a positioning sleeve (114) coaxially disposed with the positioning shaft (33), and the indicating rotary disc (3) is formed with a positioning convex ring (36) coaxially sleeved with the positioning sleeve (114); the periphery of the lower end of the positioning sleeve (114) is abutted against the upper plane of the indicating turntable (3), and the lower end face of the positioning sleeve (114) is a circular arc surface protruding downwards.

5. The reclosure molded case circuit breaker according to claim 2, wherein the number of the arc-shaped catching holes (34) is 2 to 3, and the number of the corresponding catching hooks (113) is 2 to 3.