Mechanism installation structure of circuit breaker

Abstract

The utility model relates to the technical field of low-voltage apparatus components, in particular to a mechanism mounting structure of a circuit breaker. Comprising a base, a connecting rod, a mechanism spindle, an operating mechanism, a bracket and a pin shaft, the mechanism main shaft is in threaded connection and fixed on the base through the bracket; one end of the connecting rod is fixed on the mechanism main shaft through the pin shaft, the other end of the connecting rod is fixed on the operating mechanism, and the operating mechanism is fixed on the base through threaded connection, so that the effects of simplifying the mounting and dismounting difficulty of the operating mechanism of the circuit breaker and facilitating the maintenance, repair and adjustment of the whole structure are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of low-voltage electrical components, and in particular to a mechanism mounting structure for a circuit breaker. Background Technology

[0002] With increasing user demands for the safety and reliability of universal circuit breakers, the power supply safety of circuit breakers is receiving more and more attention. As a key component of the circuit breaker, the reliability of the operating mechanism directly affects the overall safety performance of the circuit breaker. However, the installation structure of the operating mechanism of existing universal circuit breakers is relatively simple. The existing installation method is not only structurally complex but also has a cumbersome assembly process. During the use of the circuit breaker, when encountering opening or closing failures or mechanism damage requiring replacement, because the main shaft of the traditional operating mechanism is fixed to the operating mechanism body and the moving contact is fixed to the main shaft, the moving contact must be removed one by one before the operating mechanism can be replaced. This disassembly and assembly is troublesome, time-consuming, and labor-intensive. Utility Model Content

[0003] The purpose of this utility model is to provide a circuit breaker mechanism installation structure that addresses the deficiencies in the existing technology, thereby simplifying the installation and disassembly of the circuit breaker operating mechanism and facilitating the maintenance, repair, and adjustment of the entire structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a mechanism mounting structure for a circuit breaker, including a base, a connecting rod, a mechanism spindle, an operating mechanism, a bracket, and a pin; the mechanism spindle is threadedly fixed to the base through the bracket; one end of the connecting rod is fixed to the mechanism spindle through the pin, and the other end is fixed to the operating mechanism, and the operating mechanism is threadedly fixed to the base.

[0005] Furthermore, a cantilever is provided on the main shaft of the mechanism, and a cantilever through hole is provided on the cantilever. The pin passes through the cantilever through hole to fix the connecting rod on the main shaft of the mechanism, and the connecting rod is rotatably connected to the main shaft of the mechanism.

[0006] Furthermore, the base has two semi-circular protrusions and a first threaded insert and a second threaded insert. The main shaft of the mechanism is placed on the semi-circular protrusions of the base. The bracket fixes the main shaft of the mechanism to the base through the first threaded insert. The main shaft of the mechanism is rotatably connected to the base and the bracket. The base is also provided with three square holes for connecting the main shaft of the mechanism and the moving contact assembly.

[0007] Furthermore, the connecting rod is provided with a first connecting rod through hole and a second connecting rod through hole; the pin passes through the cantilever through hole and the second connecting rod through hole to fix the connecting rod to the main shaft of the mechanism, and the connecting rod is rotatably connected to the cantilever; the second connecting rod through hole cooperates with the transmission shaft on the operating mechanism, so that the connecting rod is rotatably connected to the transmission shaft.

[0008] Furthermore, a boss is provided on the left side of the pin, and a pin through hole is provided on the right side of the pin.

[0009] Furthermore, the bracket is provided with an arc, which cooperates with the main shaft of the mechanism; the bracket is also provided with an L-shaped groove, which cooperates with the semi-circular protrusion on the base; the bracket is also provided with three bracket through holes, which cooperate with the first threaded insert; the bracket is threadedly connected and fixed to the base.

[0010] Furthermore, the operating mechanism is provided with a transmission shaft, which cooperates with the second connecting rod through hole of the connecting rod, and the transmission shaft is rotatably connected to the connecting rod.

[0011] Furthermore, the operating mechanism has four through holes that mate with the second threaded insert of the base; the operating mechanism and the base are fixedly connected by threads; the upper side plate of the operating mechanism has two semi-circular grooves that mate with the main shaft of the mechanism.

[0012] The circuit breaker operating mechanism is simplified by including a base, connecting rod, main shaft, operating mechanism, bracket, and pin. The main shaft is threadedly fixed to the base via the bracket. One end of the connecting rod is fixed to the main shaft via the pin, and the other end is fixed to the operating mechanism, which is threadedly fixed to the base. This design simplifies the installation and disassembly of the circuit breaker operating mechanism and facilitates the maintenance, repair, and adjustment of the entire structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the mechanism installation structure of the circuit breaker of this utility model;

[0015] Figure 2 This is a schematic diagram of the mechanism installation structure of a circuit breaker according to this utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the main shaft of the mechanism mounting structure of a circuit breaker according to the present invention;

[0017] Figure 4 This is a schematic diagram of the mounting structure base of a circuit breaker according to the present invention;

[0018] Figure 5 This is a schematic diagram of the connecting rod of the mechanism installation structure of a circuit breaker according to the present invention;

[0019] Figure 6 This is a schematic diagram of the mounting structure pin of a circuit breaker according to the present invention;

[0020] Figure 7 This is a schematic diagram of the mounting structure support for a circuit breaker according to the present invention;

[0021] Figure 8 This is a schematic diagram of the mechanism installation structure and operating mechanism of a circuit breaker according to the present invention;

[0022] Figure label:

[0023] Base 1, semi-circular protrusion 1-1, first threaded insert 1-2, second threaded insert 1-3, connecting rod 2, first connecting rod through hole 2-1, second connecting rod through hole 2-2, mechanism main shaft 3, cantilever 3-1, cantilever through hole 3-2, operating mechanism 4, transmission shaft 4-1, through hole 4-2, semi-circular groove 4-3, bracket 5, arc 5-1, L-shaped groove 5-2, bracket through hole 5-3, pin 6, boss 6-1, pin through hole 6-2. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] A circuit breaker mechanism mounting structure, such as Figure 1 , 2As shown, it includes a base 1, a connecting rod 2, a mechanism spindle 3, an operating mechanism 4, a bracket 5, and a pin 6; the mechanism spindle 3 is threadedly fixed to the base 1 through the bracket 5; one end of the connecting rod 2 is fixed to the mechanism spindle 3 through the pin 6, and the other end is fixed to the operating mechanism 4, which is threadedly fixed to the base 1.

[0027] Specifically, the base 1, connecting rod 2, main shaft 3, operating mechanism 4, bracket 5, and pin 6 are all designed as independent modules. This allows for rapid location and replacement of damaged components during circuit breaker operation when issues arise, such as failure to close or overtravel requiring replacement, without disassembling the entire circuit breaker or moving contact. The threaded connection and pin fixing make connecting and disassembling the operating mechanism 4, connecting rod 2, and main shaft 3 simple and quick. Disassembly of the operating mechanism can be easily completed by removing the fixing screws and disconnecting the connection between connecting rod 2 and main shaft 3, greatly simplifying the maintenance process. The main shaft 3 is threadedly fixed to the base 1 via bracket 5. This connection method ensures even force distribution on the main shaft, preventing wear and malfunctions caused by uneven force. The connecting rod 2 is fixed to the main shaft 3 via pin 6, a connection that is not only simple and reliable but also easy to disassemble and replace. The modular and easy-to-disassemble features make circuit breaker maintenance simpler and faster, reducing maintenance costs and time. Damaged parts can be quickly located and replaced without disassembling the entire circuit breaker or moving contacts, thus improving maintenance efficiency. During the use of the circuit breaker, when the mechanism fails to close normally or exceeds the travel limit and needs replacement, it is no longer necessary to disassemble the moving contacts. Simply remove the fixing screws of the mechanism, remove the connecting rod connecting the operating mechanism and the main shaft, and remove the pin of the fixing connecting rod to easily complete the disassembly of the operating mechanism. After replacement, insert the fixing pin and re-fix the mechanism to the base. The enlarged main shaft support of the fixing mechanism makes the main shaft of the mechanism more evenly stressed, the connecting rod is less prone to wear, and the connection is more secure. This structure simplifies the installation and disassembly of the circuit breaker operating mechanism, achieving the effect of facilitating the maintenance, repair, and adjustment of the entire structure.

[0028] As a preferred embodiment of the above, such as Figure 3 As shown, a cantilever 3-1 is provided on the main shaft 3 of the mechanism, and a cantilever through hole 3-2 is provided on the cantilever 3-1. The pin 6 passes through the cantilever through hole 3-2 to fix the connecting rod 2 on the main shaft 3 of the mechanism, and the connecting rod 2 is rotatably connected to the main shaft 3 of the mechanism.

[0029] Specifically, by setting a cantilever 3-1 on the main shaft 3 of the mechanism and opening a cantilever through hole 3-2 on the cantilever, the connecting rod 2 can be rotatably connected to the main shaft 3 of the mechanism via the pin 6. This not only increases the flexibility of the mechanism but also allows the connecting rod 2 to maintain a certain angle change when transmitting power, thus adapting to the needs of different working conditions. The cantilever 3-1 makes the connection between the main shaft 3 of the mechanism and the connecting rod 2 more compact, reducing unnecessary space occupation and making the entire mechanism easier and faster to install and disassemble. The cantilever through hole 3-2 allows the pin 6 to easily pass through and fix the connection between the connecting rod 2 and the main shaft 3 of the mechanism. When it is necessary to disassemble or replace parts, simply loosen the pin 6 to quickly separate the connecting rod 2 and the main shaft 3 of the mechanism, simplifying the installation and maintenance process. The flexibility of the rotatable connection and the compact structure enable the circuit breaker to maintain more stable and accurate operation during opening and closing, thereby improving its overall performance. The ease of installation and maintenance reduces the maintenance cost of the circuit breaker. Maintenance personnel can quickly locate and replace damaged parts, reducing losses caused by downtime for maintenance.

[0030] As a preferred embodiment of the above, such as Figure 4 As shown, the base 1 has two semi-circular protrusions 1-1, a first threaded insert 1-2, and a second threaded insert 1-3. The main shaft 3 of the mechanism is placed on the semi-circular protrusions 1-1 of the base 1. The bracket 5 fixes the main shaft 3 of the mechanism to the base 1 through the first threaded insert 1-2. The main shaft 3 of the mechanism is rotatably connected to the base 1 and the bracket 5. The base 1 is also provided with three square holes for connecting the main shaft 3 of the mechanism and the moving contact assembly.

[0031] Specifically, the two semi-circular protrusions 1-1 on the base 1 provide a stable support surface for the main shaft 3, ensuring the stability and accuracy of the main shaft during rotation, reducing wear and deformation caused by uneven force on the main shaft, and improving the overall performance and reliability of the circuit breaker. The first threaded insert 1-2 allows the bracket 5 to easily fix the main shaft 3 on the base 1, which is not only firm and reliable, but also easy to disassemble and replace, reducing maintenance costs and time. The main shaft 3 is connected to the base 1 and the bracket 5 by a rotating connection, which allows the main shaft to maintain a certain degree of flexibility when transmitting power. The three square holes on the base 1 make the connection between the main shaft 3 and the moving contact assembly more convenient, further making the installation and maintenance of the circuit breaker simpler and faster, reducing the difficulty of operation and time costs.

[0032] As a preferred embodiment of the above, such as Figure 5As shown, the connecting rod 2 is provided with a first connecting rod through hole 2-1 and a second connecting rod through hole 2-2; the pin 6 passes through the cantilever through hole 3-2 and the second connecting rod through hole 2-2 to fix the connecting rod 2 to the main shaft 3 of the mechanism, and the connecting rod 2 is rotatably connected to the cantilever 3-1; the second connecting rod through hole 2-2 cooperates with the transmission shaft 4-1 on the operating mechanism 4, so that the connecting rod 2 is rotatably connected to the transmission shaft 4-1.

[0033] Specifically, by setting two through holes on the connecting rod 2, a rotational connection between the connecting rod 2 and the main shaft 3 and the operating mechanism 4 is achieved. The second connecting rod through hole 2-2 cooperates with the transmission shaft 4-1 on the operating mechanism 4, ensuring a tight connection and effective transmission between the connecting rod 2 and the transmission shaft. The rotational connection method makes the connection between the connecting rod 2 and the main shaft 3 and the operating mechanism 4 more convenient, reducing the difficulty of installation and adjustment. When it is necessary to adjust or replace parts, it is only necessary to loosen the connecting parts of the main shaft 6 or the transmission shaft 4-1 to easily complete the relevant operations.

[0034] As a preferred embodiment of the above, such as Figure 6 As shown, a boss 6-1 is provided on the left side of the pin 6, and a pin through hole 6-2 is provided on the right side of the pin 6.

[0035] Specifically, the design of the boss 6-1 on the left side of the pin 6 increases the contact area between the pin and the connecting rod 2 and the cantilever 3-1, thereby improving the stability and firmness of the connection. The design of the pin through hole 6-2 on the right side of the pin 6 makes the installation and disassembly of the pin more convenient.

[0036] As a preferred embodiment of the above, such as Figure 7 As shown, the bracket 5 is provided with an arc 5-1, which cooperates with the main shaft 3 of the mechanism; the bracket 5 is also provided with an L-shaped groove 5-2, which cooperates with the semi-circular protrusion 1-1 on the base 1; the bracket 5 is also provided with three bracket through holes 5-3, which cooperate with the first threaded insert 1-2; the bracket 5 is threadedly connected and fixed to the base 1.

[0037] Specifically, the arc 5-1 design on the bracket 5 closely matches the outer contour of the main shaft 3 of the mechanism, providing stable support and guidance, ensuring the stability and accuracy of the main shaft during rotation. The L-shaped groove 5-2 matches the semi-circular protrusion 1-1 on the base 1, further enhancing the connection stability between the bracket 5 and the base 1, preventing displacement or deformation of the bracket under stress. Through the design of the arc 5-1 and the L-shaped groove 5-2, the bracket 5 can be easily positioned and installed with the main shaft 3 and the base 1, reducing installation difficulty, improving installation efficiency, and ensuring accurate matching between the components of the circuit breaker. The three bracket through holes 5-3 match the first threaded insert 1-2, and the bracket 5 is fixed to the base 1 through threaded connection. It is not only firm and reliable, but also has a self-locking function, preventing performance degradation caused by loosening during long-term use. The position of the bracket 5 fully considers the optimization of spatial layout, ensuring the compactness and coordination between the components of the circuit breaker. The design that facilitates installation and positioning reduces the maintenance cost of the circuit breaker and reduces losses caused by downtime for maintenance.

[0038] As a preferred embodiment of the above, such as Figure 8 As shown, the operating mechanism 4 is provided with a transmission shaft 4-1, which cooperates with the second connecting rod through hole 2-2 of the connecting rod 2, and the transmission shaft 4-1 is rotatably connected to the connecting rod 2.

[0039] Specifically, the rotating connection design between the drive shaft 4-1 and the second connecting rod through hole 2-2 of the connecting rod 2 ensures that the operating mechanism 4 can efficiently transmit power to the connecting rod 2, thereby driving the circuit breaker to perform opening and closing operations. The rotating connection method allows the connecting rod 2 to maintain a stable movement trajectory under the drive of the operating mechanism 4, avoiding performance degradation caused by shaking or deviation. When it is necessary to adjust or replace parts, the relevant operations can be easily completed by simply loosening the connecting part between the drive shaft 4-1 and the connecting rod 2, which improves the convenience of maintenance.

[0040] As a preferred embodiment of the above, such as Figure 8 As shown, the operating mechanism 4 has four through holes 4-2 that cooperate with the second threaded insert 1-3 of the base 1; the operating mechanism 4 and the base 1 are fixed by a threaded connection; the upper side plate of the operating mechanism 4 has two semi-circular grooves 4-3 that cooperate with the main shaft 3 of the mechanism.

[0041] Specifically, the four through holes 4-2 on the operating mechanism 4 are engaged with the second threaded insert 1-3 of the base 1 and fixed by threaded connection. This connection method has a self-locking function, ensuring a firm connection between the operating mechanism and the base. The upper side plate of the operating mechanism 4 is provided with two semi-circular grooves 4-3, which are closely matched with the outer contour of the main shaft 3 of the mechanism, providing stable support and guidance. The threaded connection between the four through holes 4-2 and the second threaded insert 1-3 simplifies the installation process and reduces the installation difficulty. At the same time, the engagement of the semi-circular grooves 4-3 with the main shaft 3 of the mechanism also facilitates the precise positioning and adjustment of the operating mechanism, improving the accuracy and efficiency of installation.

[0042] During installation, the main shaft 3 is first placed on the semi-circular protrusion 1-1 of the base 1, and lubricating oil is applied to make the rotation of the main shaft 3 more stable, the force more even, and extend its service life. Then, the bracket 5 is clamped onto the main shaft 3 and the semi-circular protrusion 1-1, and the main shaft 3 is fixed to the base with a threaded connection. The through hole 2-1 on one side of the connecting rod 2 mates with the through hole 3-2 on the cantilever 3-1 of the main shaft 3. The pin 6 passes through the first connecting rod through hole 2-1 and the cantilever through hole 3-2 in sequence to fix the connecting rod 2 to the main shaft 3. A pin is inserted into the through hole of pin 6-2 to limit the pin 6. The connecting rod 2 and the cantilever 3-1 are rotatably connected. The through hole 2-2 on one side of the connecting rod 2 is fitted onto the operating mechanism and inserted during the assembly of the operating mechanism. The connecting rod 2 and the transmission shaft 4-1 of the operating mechanism are rotatably connected. Finally, the operating mechanism 4 is fixed to the base 1 with threads, thus completing the assembly of the mechanism. This structure facilitates quick and easy disassembly and replacement of the mechanism. When the operating mechanism is damaged or needs replacement, it is no longer necessary to disassemble the moving contact assembly. Simply remove the mechanism fixing screws, remove the pin retaining ring, and pull out the pin to easily complete the disassembly. After replacing the mechanism, insert the pin, re-lock the retaining ring, and install the fixing screws to complete the replacement. This mechanism features an enlarged fixing bracket, making the main shaft rotation more stable, the force distribution more even, and the connecting rod less prone to wear. This structure also facilitates the installation, maintenance, repair, and adjustment of the circuit breaker mechanism.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanism mounting structure for a circuit breaker, characterized in that: Includes base (1), connecting rod (2), main shaft of mechanism (3), operating mechanism (4), bracket (5), and pin (6); The main shaft (3) of the mechanism is threadedly fixed to the base (1) through the bracket (5); One end of the connecting rod (2) is fixed to the main shaft (3) of the mechanism by the pin (6), and the other end is fixed to the operating mechanism (4). The operating mechanism (4) is fixed to the base (1) by a threaded connection.

2. The mechanism mounting structure of the circuit breaker according to claim 1, characterized in that, A cantilever (3-1) is provided on the main shaft (3) of the mechanism, and a cantilever through hole (3-2) is provided on the cantilever (3-1). The pin (6) passes through the cantilever through hole (3-2) to fix the connecting rod (2) on the main shaft (3) of the mechanism. The connecting rod (2) is rotatably connected to the main shaft (3) of the mechanism.

3. The mechanism mounting structure of the circuit breaker according to claim 1, characterized in that, The base (1) has two semi-circular protrusions (1-1) and a first threaded insert (1-2) and a second threaded insert (1-3). The main shaft (3) of the mechanism is placed on the semi-circular protrusion (1-1) of the base (1). The bracket (5) fixes the main shaft (3) of the mechanism on the base (1) through the first threaded insert (1-2). The main shaft (3) of the mechanism is rotatably connected to the base (1) and the bracket (5). The base (1) is also provided with three square holes for connecting the main shaft (3) of the mechanism and the moving contact assembly.

4. The mechanism mounting structure of the circuit breaker according to claim 2, characterized in that, The connecting rod (2) is provided with a first connecting rod through hole (2-1) and a second connecting rod through hole (2-2); the pin (6) passes through the cantilever through hole (3-2) and the second connecting rod through hole (2-2) to fix the connecting rod (2) to the main shaft (3) of the mechanism, and the connecting rod (2) is rotatably connected to the cantilever (3-1); the second connecting rod through hole (2-2) cooperates with the transmission shaft (4-1) on the operating mechanism (4) so ​​that the connecting rod (2) is rotatably connected to the transmission shaft (4-1).

5. The mechanism mounting structure of the circuit breaker according to claim 1, characterized in that, A boss (6-1) is provided on the left side of the pin (6), and a pin through hole (6-2) is provided on the right side of the pin (6).

6. The mechanism mounting structure of the circuit breaker according to claim 3, characterized in that, The bracket (5) is provided with an arc (5-1), which cooperates with the main shaft (3) of the mechanism; the bracket (5) is also provided with an L-shaped groove (5-2), which cooperates with the semi-circular protrusion (1-1) on the base (1); the bracket (5) is also provided with three bracket through holes (5-3), which cooperate with the first threaded insert (1-2); the bracket (5) is threadedly connected and fixed to the base (1).

7. The mechanism mounting structure of the circuit breaker according to claim 4, characterized in that, The operating mechanism (4) is provided with a transmission shaft (4-1), which is engaged with the second connecting rod through hole (2-2) of the connecting rod (2), and the transmission shaft (4-1) is rotatably connected to the connecting rod (2).

8. The mechanism mounting structure of the circuit breaker according to claim 3, characterized in that, The operating mechanism (4) has four through holes (4-2) that cooperate with the second threaded insert (1-3) of the base (1); the operating mechanism (4) and the base (1) are fixed by threaded connection; the upper side plate of the operating mechanism (4) has two semi-circular grooves (4-3) that cooperate with the main shaft (3) of the mechanism.

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