Locking structure for molded case circuit breaker
By introducing a locking structure into the molded case circuit breaker and utilizing the cooperation of the limiting element and the sliding cover, the problem of accidental closing of the circuit breaker during maintenance is solved, achieving safe locking and simplifying the maintenance process, thus ensuring the safety and reliability of the circuit breaker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-27
AI Technical Summary
Existing molded case circuit breakers cannot remain closed during maintenance or troubleshooting, leading to the safety hazard of accidental closing.
Design a locking structure for molded case circuit breakers, including a cover, a lock body, a limiting element, a sliding cover, a trip button, and a micro switch. By cooperating with the limiting element and the sliding cover, the manual or automatic operation state can be switched, ensuring that the circuit breaker remains locked during maintenance.
It effectively prevents accidental circuit breaker closing, avoids electric shock accidents, prevents unauthorized operation, simplifies maintenance procedures, and improves safety and reliability.
Smart Images
Figure CN224053040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model discloses a locking structure belongs to the technical field of molded case circuit breaker, and specifically relates to a locking structure for molded case circuit breaker. BACKGROUND
[0002] Molded case circuit breaker, as the vital safety protection component in low-voltage power system, its operation mechanism is ingenious and efficient. When the circuit encounters abnormal conditions such as overcurrent and short circuit, the device can respond quickly, automatically cut off the circuit, effectively isolate the fault point, and ensure the power equipment and line from damage. Its internal design is ingenious, through current induction and electromagnetic mechanism linkage, once the current exceeds the standard, the fuse mechanism is triggered, and the magnetic attraction force promotes the handle to trip, instantaneously cuts off the power, and ensures safety. In low-voltage power system, various electrical equipment and household power supply scenarios, the molded case circuit breaker has become an indispensable power guardian with the characteristics of simple structure, reliable action and excellent safety performance. It not only can significantly improve the stability and reliability of the power system, but also can effectively reduce the maintenance cost, and is the best in the modern power protection field. Therefore, during use, the operation procedures should be strictly followed, and regular inspection and maintenance should be carried out to ensure that it is always in the best working state.
[0003] The molded case circuit breaker in the prior art cannot maintain the closed state during maintenance or fault elimination, thereby causing safety hazards caused by accidental closing. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a locking structure for molded case circuit breaker, which solves the above-mentioned problems.
[0005] Technical scheme: a locking structure for molded case circuit breaker, the locking structure is installed in the molded case circuit breaker, and the locking structure is composed of a cover body, a lock body, a limiting piece, a sliding cover, a trip button and a micro switch.
[0006] In a further embodiment, the lock body and the sliding cover are installed on the cover body, the limiting piece is installed on the lock body, the trip button is installed on the switch of the molded case circuit breaker and cooperates with the limiting piece, and the micro switch is installed on the cover body.
[0007] In a further embodiment, the micro switch is provided with a plurality of micro switches.
[0008] In a further embodiment, when unlocked, the limiting piece does not contact the sliding cover and the trip button, the sliding cover can realize manual-automatic conversion operation, when the sliding cover is on the right side, the molded case circuit breaker is in an automatic operation state and can be freely slid, when the sliding cover slides to the left side, the molded case circuit breaker is in a manual operation state, and the sliding cover presses the lever of the micro switch to send a manual operation signal to the controller.
[0009] In further embodiments, when locked, the sliding cover cannot be slid, is restricted in the automatic position, the trip button is restricted in the trip position, and the molded case circuit breaker is tripped.
[0010] Compared with the prior art, the utility model has beneficial effects:
[0011] 1. Ensure safety: during maintenance or troubleshooting, the locking structure can prevent the circuit breaker from being accidentally closed, thereby avoiding electric shock or other safety accidents caused by improper operation.
[0012] 2. Prevent misoperation: through the locking mechanism, unauthorized personnel can be prevented from operating the circuit breaker, ensuring that only trained professionals can perform maintenance or troubleshooting.
[0013] 3. Simplify maintenance process: the locking structure allows maintenance personnel to easily lock the circuit breaker and easily unlock it through the release device after completing maintenance, simplifying the maintenance process. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a schematic diagram of the utility model.
[0015] Figure 2 is a schematic diagram of the locked state of the utility model.
[0016] Figure 3 is a schematic diagram of the unlocked state of the utility model Figure 1 .
[0017] Figure 4 is a schematic diagram of the unlocked state of the utility model Figure 2 .
[0018] Figure 5 is an axonometric view of the molded case circuit breaker of the utility model.
[0019] Figure 6 is a partial schematic diagram of the utility model.
[0020] Reference signs: cover 1, lock body 2, limiting piece 3, sliding cover 4, trip button 5, micro switch 6. DETAILED DESCRIPTION
[0021] The technical solutions of the utility model will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0024] A locking structure for a molded case circuit breaker includes: a cover 1, a lock body 2, a limiting member 3, a sliding cover 4, a trip button 5, and a micro switch 6.
[0025] In one embodiment, such as Figures 1 to 6 As shown, the locking structure is installed inside the molded case circuit breaker, and the locking structure consists of a cover 1, a lock body 2, a limiting member 3, a sliding cover 4, a trip button 5, and a micro switch 6;
[0026] In one embodiment, such as Figures 1 to 6 As shown, the lock body 2 and the sliding cover 4 are mounted on the cover body 1, the limiting member 3 is mounted on the lock body 2, the trip button 5 is mounted on the switch of the molded case circuit breaker and cooperates with the limiting member 3, and the micro switch 6 is mounted on the cover body 1.
[0027] In one embodiment, such as Figures 1 to 6 As shown, the micro switch 6 has several units.
[0028] In one embodiment, such as Figures 1 to 6 As shown, the top of the cover 1 is provided with an upper cover.
[0029] Working principle: the utility model discloses can realize locking tripping button 5 and manual operation cover plate. By cover 1, lock body 2, limiting piece 3, sliding cover 4, tripping button 5, microswitch 6 are formed. Lock body 2 and sliding cover 4 are installed on cover 1, limiting piece 3 is installed on lock body 2, when unlocking, lock body 2 and sliding cover 4 tripping button 5 do not contact, and sliding cover 4 can slide freely, realizes hand automatic conversion, and tripping button 5 can carry out tripping operation, only press the lever of microswitch 6;When locking, sliding cover 4 can not slide, and is limited in automatic position, and tripping button 5 is limited in tripping position, and molded case circuit breaker trips.
[0030] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived from still fall within the scope of the utility model.
Claims
1. A locking structure for a molded case circuit breaker, characterized by, The locking structure is installed in the plastic shell circuit breaker, and is composed of a cover, a lock body, a limiting piece, a sliding cover, a trip button and a micro switch. The lock body and the sliding cover are installed on the cover, the limiting piece is installed on the lock body, the trip button is installed on the switch of the plastic shell circuit breaker and cooperates with the limiting piece, and the micro switch is installed on the cover.
2. The locking structure for a molded case circuit breaker according to claim 1, wherein The micro switch is provided with a plurality of.
3. The locking structure for a molded case circuit breaker according to claim 1, wherein When being unlocked, the limiting piece does not contact the sliding cover and the trip button, the sliding cover realizes manual-automatic conversion operation, the sliding cover is at the right side, the plastic shell circuit breaker is in an automatic operation state, when the sliding cover slides to the left side, the plastic shell circuit breaker is in manual operation, the sliding cover presses the lever of the micro switch to send a manual operation signal to a controller.
4. The locking structure for a molded case circuit breaker according to claim 1, wherein When being locked, the sliding cover cannot slide and is limited in an automatic position, the trip button is limited in a tripping position, and the plastic shell circuit breaker is in a tripping state.