Opening lock for circuit breaker
By introducing a combination structure of combination lock, bracket and tension spring, the problem of circuit breaker trip lock key being easily broken or lost is solved, the stable and reliable operation of the circuit breaker is achieved, the installation process is simplified, and the safety and convenience are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-03-27
AI Technical Summary
Existing circuit breaker trip locks are prone to failure to trip or close due to broken or lost keys, and mounting screws are easily lost inside the operating mechanism, affecting the stability and reliability of the circuit breaker.
It adopts a combination structure of combination lock, bracket and tension spring, which is fixed to the side plate of the mechanism by threaded connection. The combination lock head is matched with thin hexagonal nut, the lock tongue is matched with the groove of the travel mechanism, the tension spring is connected to the lock tongue, and the bracket is designed with L-shaped structure to ensure stable installation and prevent the lock cylinder from rotating.
It improves the safety and reliability of the trip lock, avoids the problem of lost or broken keys, simplifies the installation process, reduces the risk of jamming caused by screws falling into the mechanism, and ensures the stable operation of the circuit breaker.
Smart Images
Figure CN224053119U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of low voltage electrical apparatus, especially relates to a circuit breaker is with opening lock. BACKGROUND
[0002] Frame circuit breaker is a mechanical switch electrical appliance that can connect, carry and break the current under normal circuit condition, and also can connect, carry for a certain time and break the current under the specified abnormal circuit condition. The existing protection device of frame circuit breaker mainly adopts the traditional mechanical lock matched with the key to realize the mechanical locking function of frame circuit breaker. However, a series of situations may occur due to improper operation of the user in actual use, which leads to the imperfect realization of the mechanical locking function of frame circuit breaker. In the case of serious operation failure, the key may even be broken in the lock hole, and the loss of key is also common, which seriously affects the safe and stable power consumption.
[0003] The opening lock is an important component of the universal circuit breaker, which is installed on the cover plate of the operating mechanism of the universal circuit breaker. When the circuit breaker tripping button is pressed, the circuit breaker can be locked in the tripping position by rotating the key lock, and the circuit breaker is prevented from closing. The commonly used opening lock types include three locks and two keys, five locks and three keys, etc. Due to the flexibility of the lock core of the opening lock, the lock core may rotate under the gravity of the lock piece and the vibration of the mechanism during the normal opening and closing of the circuit breaker. When the circuit breaker tripping button is operated, the lock tongue may fall into the limiting groove on the push rod, thereby causing unexpected locking of the circuit breaker and affecting the reliability of the circuit breaker. The existing opening lock is basically installed on the cover plate of the circuit breaker operating mechanism. During actual installation, the installation screw is easily dropped into the operating mechanism, which causes the operating mechanism to be stuck or damaged, and affects the stability of the circuit breaker. SUMMARY
[0004] The utility model discloses a circuit breaker is with opening lock to solve the problem that the key of the opening lock of the prior art is easy to break, or cannot be opened and closed due to the loss of the key, and the installation screw is easily dropped into the operating mechanism, which causes the operating mechanism to be stuck or damaged, and affects the stability of the circuit breaker.
[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of a circuit breaker is with opening lock, which includes a password lock, a bracket and a tension spring. The password lock is fixed on the bracket through thread connection, the bracket is fixed on the side surface of the mechanism side plate through thread connection, and the stroke mechanism is arranged on the front surface of the mechanism side plate. One end of the tension spring is fixed on the bracket, and the other end is fixed on the password lock.
[0006] Further, the password lock comprises a password lock head, a first thin hexagonal nut, a second thin hexagonal nut and a lock tongue; the password lock head is fixed on the support through thread connection with the first thin hexagonal nut.
[0007] Further, the lock tongue is fixed on the password lock through thread connection with the second thin hexagonal nut.
[0008] Further, the lock tongue is matched with the groove of the stroke mechanism.
[0009] Further, a protrusion is arranged on the lock tongue and connected with the lower end of the tension spring.
[0010] Further, two thread holes are arranged on the mechanism side plate and used for installing the support.
[0011] Further, the mechanism side plate is further provided with a side plate groove and used for limiting the support, and is further provided with a square through hole and used for matching the lock tongue with the stroke mechanism.
[0012] Further, the support is provided with a second protrusion matched with the groove.
[0013] Further, the support is in L-shaped structure, and is provided with a first through hole, a second through hole and a third through hole; the rear part of the password lock head passes through the first through hole and is fixed on the support through the first thin hexagonal nut; the second through hole is matched with thread connection and is used for installing the support on the mechanism side plate; and the third through hole is matched with the tension spring.
[0014] The structure comprising a password lock, a support and a tension spring; the password lock is fixed on the support through thread connection, the support is fixed on the side of a mechanism side plate through thread connection, and a stroke mechanism is arranged on the front surface of the mechanism side plate; one end of the tension spring is fixed on the support, and the other end is fixed on the password lock, so that the problems in the prior art that the key of the disconnecting lock is easy to be broken, the disconnecting lock cannot be opened or closed due to loss of the key, and the screw is easy to drop into the operation mechanism during installation, thereby causing the operation mechanism to be stuck or damaged and affecting the stability of the circuit breaker are solved. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments in the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0016] Figure 1A circuit breaker opening lock and its mounting mode unlocking position structure schematic view of the utility model;
[0017] Figure 2 A circuit breaker opening lock and its mounting mode locking position structure schematic view of the utility model;
[0018] Figure 3 A circuit breaker opening lock and its mounting mode structure schematic view of the utility model;
[0019] Figure 4 A circuit breaker opening lock and its mounting mode password lock and stroke mechanism structure schematic view of the utility model;
[0020] Figure 5 A circuit breaker opening lock and its mounting mode mechanism side plate structure schematic view of the utility model;
[0021] Figure 6 A circuit breaker opening lock and its mounting mode mechanism support schematic view of the utility model;
[0022] Reference signs:
[0023] Password lock 1, password lock head 1-1, first thin hexagonal nut 1-2, lock tongue 1-3, second thin hexagonal nut 1-4, protruding block 1-5, stroke mechanism 2, recess 2-1, mechanism side plate 3, side plate recess 3-1, threaded hole 3-2, square through hole 3-3, support 4, first through hole 4-1, second through hole 4-2, third through hole 4-3, second protruding block 4-4, tension spring 5. Specific implementation
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0025] In the description of the utility model, it should be explained that the orientation or position relationship of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0026] A circuit breaker opening lock, such as Figure 1 , 2As shown, including the password lock 1, support 4 and tension spring 5; the password lock 1 is fixed on the support 4 by threaded connection, the support 4 is fixed on the side of the mechanism side plate 3 by threaded connection, the travel mechanism 2 is opened on the front of the mechanism side plate 3; one end of the tension spring 5 is fixed on the support 4, and the other end is fixed on the password lock 1.
[0027] Specifically, by introducing the password lock 1 to replace the traditional mechanical lock and key, the security risks such as key loss and breakage are avoided, and the safety and convenience of operation are improved. The use of the password lock 1 only needs to remember the password, without carrying the physical key, reducing the security risks caused by improper key management. The support 4 is fixed on the mechanism side plate 3 by threaded connection, which is not only stable and reliable, but also simplifies the installation process and reduces the risk of installing screws into the internal operation mechanism. The support 4 serves as the fixed basis for the password lock 1 and the tension spring 5, ensuring the stability and reliability of the entire disconnecting lock system. One end of the tension spring 5 is fixed on the support 4, and the other end is fixed on the password lock 1, which plays a role in keeping the position of the password lock 1 stable. During the normal opening and closing process of the circuit breaker, the tension of the tension spring 5 helps to prevent unnecessary rotation of the lock core, thereby avoiding unexpected locking caused by accidental falling of the lock tongue into the push rod limiting groove. The combination design of the password lock 1, the support 4 and the tension spring 5 not only improves the safety and reliability of the disconnecting lock, but also enhances its adaptability and flexibility. The support 4 is fixed on the side of the mechanism side plate 3 by threaded connection, and the travel mechanism 2 is opened on the front of the mechanism side plate 3, which solves the problems of key breakage and inability to open and close due to key loss.
[0028] As a preferred embodiment of the above embodiment, as shown in the Figure 4 The password lock includes a password lock head 1-1, a first thin hexagonal nut 1-2, a second thin hexagonal nut 1-4 and a lock tongue 1-3; the password lock head 1-1 is fixed on the support 4 by threaded connection with the first thin hexagonal nut 1-2.
[0029] Specifically, the threaded connection of the password lock head 1-1 and the first thin hexagonal nut 1-2 realizes the stable fixation of the password lock on the support 4, which is not only simple and reliable, but also easy to install and disassemble, facilitating subsequent maintenance and replacement, ensuring the stability and durability of the password lock during the operation of the circuit breaker, avoiding the security risks caused by loose or damaged locks. The lock tongue 1-3 can ensure that the lock tongue can smoothly extend and lock the circuit breaker after the correct password is input. When unlocking is needed, the lock tongue can be quickly and reliably retracted, improving the operation convenience and safety of the disconnecting lock, and avoiding the problems of unexpected locking or inability to unlock caused by lock tongue jamming or damage.
[0030] As a preferred embodiment of the above embodiment, as shown in the Figure 4As shown, the locking tongue 1-3 is fixed on the password lock 1 through thread connection with the second thin hexagonal nut 1-4.
[0031] Specifically, the stable locking tongue fixing method helps to improve the overall safety of the disconnecting lock. When the locking tongue is correctly extended and locked, it can effectively prevent the circuit breaker from closing under unexpected circumstances, thereby protecting the safety of the circuit and equipment. Thread connection allows the locking tongue 1-3 to be easily removed and replaced when needed.
[0032] As a preferred embodiment of the above, as shown in Figure 1 As shown, the locking tongue 1-3 cooperates with the groove 2-1 of the travel mechanism 2.
[0033] Specifically, through the precise cooperation of the locking tongue 1-3 and the groove 2-1 of the travel mechanism 2, it is ensured that when the password lock is correctly opened, the locking tongue can be accurately inserted into the groove, thereby achieving reliable locking of the circuit breaker. The close cooperation of the locking tongue 1-3 and the groove 2-1 helps to reduce the shaking or vibration of the circuit breaker during operation, thereby ensuring its stable operating state.
[0034] As a preferred embodiment of the above, as shown in Figure 4 As shown, the locking tongue 1-3 is provided with a protrusion 1-5, and the protrusion 1-5 is connected with the lower end of the tension spring 5.
[0035] Specifically, the protrusion 1-5 allows the lower end of the tension spring 5 to be stably connected to the locking tongue 1-3. This connection ensures that the tension spring 5 can uniformly and stably act on the locking tongue 1-3 when providing tension, thereby avoiding the problem of unstable movement or locking failure of the locking tongue due to uneven tension. The connection of the tension spring 5 to the locking tongue 1-3 through the protrusion 1-5 allows the locking tongue to quickly and reliably reset after unlocking. This reset capability is crucial for ensuring the normal operation of the circuit breaker and avoiding misoperation. When the password lock is unlocked and the locking tongue is withdrawn from the groove of the travel mechanism, the tension of the tension spring 5 will immediately act on the protrusion 1-5, causing the locking tongue to quickly return to the initial position, preparing for the next locking operation. The direct connection of the protrusion 1-5 to the lower end of the tension spring 5 reduces the need for additional connecting parts, thereby improving the compactness of the entire disconnecting lock structure. This not only helps to save space, but also reduces potential failure points caused by excessive connecting parts.
[0036] As a preferred embodiment of the above, as shown in Figure 5 As shown, the mechanism side plate 3 is provided with two threaded holes 3-2 and is used to install the bracket 4.
[0037] Specifically, through the installation position of the bracket 4, the problems of key breakage and inability to open and close the circuit breaker due to key loss are further solved.
[0038] As a preferred embodiment of the above, as shown in Figure 5 The mechanism side plate 3 is also provided with a side plate groove 3-1 for limiting the bracket 4, and is provided with a square-shaped through hole 3-3 for the cooperation of the lock tongue 1-3 and the stroke mechanism 2.
[0039] Specifically, the bracket 4 can be accurately aligned and fixed on the mechanism side plate 3 during installation through the arrangement of the side plate groove 3-1, which not only simplifies the installation process, but also ensures the stability and reliability of the bracket 4 during subsequent use. By limiting the movement range of the bracket 4, the side plate groove 3-1 effectively prevents the bracket from loosening or shifting due to vibration or external force, and the cooperation of the side plate groove 3-1 and the bracket 4 not only provides precise limiting function, but also enhances the connection strength between the mechanism side plate 3 and the bracket 4 by increasing the contact area and friction, further improving the stability and durability of the entire disconnecting lock system. The square-shaped through hole 3-3 allows the lock tongue 1-3 to smoothly pass through the mechanism side plate 3 and cooperate with the groove or corresponding components of the stroke mechanism 2, which not only simplifies the connection process between the lock tongue and the stroke mechanism, but also ensures that the lock tongue can accurately reach the designated position during operation, thereby realizing reliable locking function. By designing the cooperation point of the lock tongue 1-3 and the stroke mechanism at the square-shaped through hole 3-3, the operator can intuitively observe the movement state of the lock tongue when inputting the password and unlocking, improving the convenience of operation and enabling the operator to more easily determine whether the disconnecting lock is in the locked or unlocked state. The side plate groove 3-1 and the square-shaped through hole 3-3 also consider the optimization of space layout, and reasonably arrange the positions and shapes of these components to make the structure of the entire disconnecting lock system more compact and reasonable, not only saving space, but also improving the overall aesthetics and practicality of the system.
[0040] As a preferred embodiment of the above, as shown in Figure 1 The bracket 4 is provided with a second protrusion 4-4 cooperating with the groove 3-1.
[0041] Specifically, the bracket 4 can be accurately aligned and fixed on the mechanism side plate 3 during installation through the arrangement of the side plate groove 3-1, which not only simplifies the installation process, but also ensures the stability and reliability of the bracket 4 during subsequent use. By limiting the movement range of the bracket 4, the side plate groove 3-1 effectively prevents the bracket from loosening or shifting due to vibration or external force, and the cooperation of the side plate groove 3-1 and the bracket 4 not only provides precise limiting function, but also enhances the connection strength between the mechanism side plate 3 and the bracket 4 by increasing the contact area and friction, further improving the stability and durability of the entire disconnecting lock system. The square-shaped through hole 3-3 allows the lock tongue 1-3 to smoothly pass through the mechanism side plate 3 and cooperate with the groove or corresponding components of the stroke mechanism 2, which not only simplifies the connection process between the lock tongue and the stroke mechanism, but also ensures that the lock tongue can accurately reach the designated position during operation, thereby realizing reliable locking function. By designing the cooperation point of the lock tongue 1-3 and the stroke mechanism at the square-shaped through hole 3-3, the operator can intuitively observe the movement state of the lock tongue when inputting the password and unlocking, improving the convenience of operation and enabling the operator to more easily determine whether the disconnecting lock is in the locked or unlocked state. The side plate groove 3-1 and the square-shaped through hole 3-3 also consider the optimization of space layout, and reasonably arrange the positions and shapes of these components to make the structure of the entire disconnecting lock system more compact and reasonable, not only saving space, but also improving the overall aesthetics and practicality of the system.
[0042] As a preferred embodiment of the above, as shown in Figure 6As shown, the bracket 4 is in an L-shaped structure, and is provided with a first through hole 4-1, a second through hole 4-2, and a third through hole 4-3. The password lock head 1-1 passes through the first through hole 4-1 at the back and is fixed on the bracket 4 through the first thin hexagonal nut 1-2. The second through hole 4-2 is matched with the threaded connection to install the bracket 4 to the mechanism side plate 3. The third through hole 4-3 is matched with the pull spring 5 connection.
[0043] Specifically, by adopting the L-shaped structure design of the bracket 4, not only sufficient strength and stability are provided, but also the space layout is optimized, so that the bracket 4 can support and fix the password lock head 1-1 and the connection with other components at the same time, thereby ensuring the stability of the entire split lock system. The design of the first through hole 4-1 enables the rear part of the password lock head 1-1 to pass through and be fixed on the bracket 4. Through the threaded connection of the first thin hexagonal nut 1-2, the password lock head 1-1 is firmly fixed on the bracket 4, ensuring the stability and accuracy of the password lock head 1-1 during operation. The design of the second through hole 4-2 enables the bracket 4 to be conveniently installed to the mechanism side plate 3. Through the threaded connection, the bracket 4 can be firmly fixed at the predetermined position of the mechanism side plate 3. The design of the third through hole 4-3 provides convenience for the connection of the pull spring 5. Through the third through hole 4-3, the lower end of the pull spring 5 can be easily connected to the bracket 4, thereby realizing the reset function of the lock tongue 1-3. The L-shaped structure and the three through holes thereon optimize the space utilization of the bracket 4. Through reasonable layout and size design, the bracket 4 not only meets the connection requirements of the password lock head 1-1, the mechanism side plate 3, and the pull spring 5, but also ensures the compactness and beauty of the entire split lock system.
[0044] When installing, first, the lock head 1-1 of the password lock 1 is locked and then passes through the through hole 4-1 on the support 4, is fixed on the support 4 by screwing the first thin hexagonal nut 1-2, then the lock tongue 1-3 is fixed on the lock 1 by screwing the second thin hexagonal nut 1-4. Then, the upper end of the tension spring 5 is sleeved on the hole 4-3 of the support 4, the lower part of the tension spring is sleeved on the lock tongue 1-3, the protrusion 4-4 is clamped into the groove 3-1 of the mechanism side plate 3, and the support 4 is fixed on the mechanism side plate 3 by screwing through the second through hole 4-2 and the third through hole 4-3. Under the action of the tension spring, the lock tongue can be more stable in the unlocking state, and the problem of unexpected self-locking of the disconnecting lock is solved. When the circuit breaker is operated, the lock tongue can be prevented from falling due to vibration. In the locking state, the tension spring tension line is located on one side of the disconnecting lock core shaft, so that the lock tongue locking is more stable. In the locking state, the tension spring tension line is located on the other side of the disconnecting lock core shaft, so that the lock tongue does not fall due to gravity, affecting the circuit breaker opening and closing operation. The connecting part of the disconnecting lock and the mechanism is located on the side of the mechanism, which can prevent the screws from falling into the mechanism and causing the mechanism to be stuck and unable to work when the disconnecting lock is installed. By fixing the lock tongue on the password lock head and cooperating with the travel mechanism arranged on the mechanism side plate, only when the password is accurately input and the lock head is opened, the locking of the travel mechanism can be released. Compared with the ordinary disconnecting lock, the lock solves the problems of key breakage and key loss affecting the opening and closing of the circuit breaker.
[0045] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A circuit breaker with a tripping lock characterized in that: It comprises a password lock (1), a bracket (4) and a tension spring (5); The password lock (1) is fixed on the bracket (4) by threaded connection, the bracket (4) is fixed on the side of the mechanism side plate (3) by threaded connection, and the travel mechanism (2) is opened on the front of the mechanism side plate (3); One end of the tension spring (5) is fixed on the bracket (4), and the other end is fixed on the password lock (1).
2. The opening lock for a circuit breaker according to claim 1, characterized by The password lock comprises a password lock head (1-1), a first thin hexagonal nut (1-2), a second thin hexagonal nut (1-4) and a lock tongue (1-3); The password lock head (1-1) is fixed on the bracket (4) by threaded connection with the first thin hexagonal nut (1-2).
3. The opening lock for a circuit breaker according to claim 2, characterized in that The lock tongue (1-3) is fixed on the password lock (1) by threaded connection with the second thin hexagonal nut (1-4).
4. The opening lock for a circuit breaker according to claim 3, wherein The lock tongue (1-3) cooperates with the groove (2-1) of the travel mechanism (2).
5. The opening lock for a circuit breaker according to claim 4, wherein The lock tongue (1-3) is provided with a protrusion (1-5), and the protrusion (1-5) is connected with the lower end of the tension spring (5).
6. The opening lock for a circuit breaker according to claim 1, wherein The mechanism side plate (3) is provided with two threaded holes (3-2) and is used for installing the bracket (4).
7. The opening lock for a circuit breaker according to claim 2, wherein The mechanism side plate (3) is also provided with a side plate groove (3-1) and is used for limiting the bracket (4), and the mechanism side plate (3) is also provided with a square through hole (3-3) and is used for cooperation between the lock tongue (1-3) and the travel mechanism (2).
8. The opening lock for a circuit breaker according to claim 7, characterized by The bracket (4) is provided with a second protrusion (4-4) which cooperates with the side plate groove (3-1).
9. The opening lock for a circuit breaker according to claim 2, wherein The bracket (4) is in L-shaped structure, and the bracket (4) is provided with a first through hole (4-1), a second through hole (4-2) and a third through hole (4-3); The rear of the password lock head (1-1) passes through the first through hole (4-1) and is fixed on the bracket (4) by the first thin hexagonal nut (1-2); The second through hole (4-2) cooperates with threaded connection to install the bracket (4) on the mechanism side plate (3); and the third through hole (4-3) cooperates with the tension spring (5) connection.