A circuit breaker auxiliary alarm mechanism

Abstract

The utility model provides a kind of auxiliary alarm mechanism of circuit breaker belongs to circuit breaker design technical field, including base, with partition in the middle, partition both ends are respectively equipped with first microswitch and second microswitch, the side of installing first microswitch is also provided with the top bar that can be vertically slid along the side surface of first microswitch, partition other side installs rotatable swing bar, the beneficial effects of the utility model lie in that by split modular design, auxiliary contact and alarm contact are independently arranged, effectively eliminate the mutual interference between signal, to significantly improve the accuracy and reliability of state monitoring.Small in size, compact structure.And using convenient plug-in or buckle type installation, discard the traditional screw connection mode, greatly simplify assembly steps, improve installation and maintenance efficiency.Modular design can also enhance the flexibility of accessory configuration, so that it can better adapt to different models of circuit breaker, improve the versatility and applicability of product.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker design technology, and in particular to an auxiliary alarm mechanism for circuit breakers. Background Technology

[0002] As a crucial protection and control component in power systems, the reliability of circuit breakers directly impacts power supply safety and stability. In practical applications, auxiliary alarm devices play a vital role in status monitoring and signal transmission, indicating the circuit breaker's open / close position or triggering alarm signals. This provides maintenance personnel with equipment status information, facilitating remote monitoring and fault handling.

[0003] In existing technical solutions, the auxiliary alarm device of circuit breakers generally adopts an integrated structural design. This design integrates the auxiliary contacts and alarm contacts into a single modular housing and fixes it to the circuit breaker body through a unified mounting bracket. This structure has certain drawbacks in practical application and installation and maintenance.

[0004] Because the auxiliary contacts and alarm contacts are highly integrated in physical space, the signal lines are densely packed, making them prone to mutual interference. Within the confined shared cavity, the arc or electromagnetic signals generated when the contacts operate may affect the electrical performance of adjacent contacts, leading to false alarms, unstable transmission, or even malfunctions, thus reducing the reliability of condition monitoring. Furthermore, the integrated structure limits design flexibility, making it difficult to adapt to the specific space and functional requirements of different circuit breaker models, resulting in poor versatility.

[0005] In summary, existing auxiliary alarm devices have significant shortcomings in terms of signal independence and ease of installation, and cannot fully meet the higher requirements of modern power systems for circuit breaker accessories. Utility Model Content

[0006] This utility model proposes a circuit breaker auxiliary alarm mechanism to solve the problem that the existing auxiliary alarm devices mentioned in the background art have obvious deficiencies in terms of signal independence and ease of installation.

[0007] The technical solution of this utility model is implemented as follows: A circuit breaker auxiliary alarm mechanism is characterized in that it includes a base with a partition in the middle, a first micro switch and a second micro switch respectively installed on both sides of the partition, a top rod that can slide vertically along the side of the first micro switch is also provided on the side where the first micro switch is installed, and a rotatable swing rod is installed on the other side of the partition. One end of the swing rod extends to the outside of the base, and the other end abuts against the second micro switch. The end closer to the second micro switch is the abutting end, and a torsion spring is provided at the center of the hinge axis of the swing rod. When the push rod is driven to a certain height by an external force, it can contact the first micro switch, causing the first micro switch to work and realize the alarm. When the circuit breaker is open, the rocker arm presses the second micro switch under the action of the torsion spring. When the circuit breaker is closed, the rocker arm disengages from the second micro switch. The opening and closing status of the circuit breaker can be indicated by the change in the state of the switch.

[0008] By adopting the above technical solution, the alarm function module and the contact auxiliary function module can be separated, completely avoiding the problem of electric arcs generated by one function module affecting the other during operation. The split design also increases the flexibility of the adaptation of auxiliary components and makes full use of internal space.

[0009] Preferably, it also includes a first cover plate and a second cover plate installed on the outside of the base, and the first cover plate and the second cover plate are provided with fixing seats that match the fixing column, and the first cover plate and the second cover plate are respectively fitted and connected to the base.

[0010] Preferably, the base is provided with a second flange and an end plate, and the push rod is slidably disposed between the second flange and the end plate, thereby enabling the push rod to slide.

[0011] By adopting the above technical solution, the second flange and the end plate restrict the movement path of the top cover, allowing the top rod to slide along a single track.

[0012] Preferably, the base is further provided with a first flange, and a spring is provided between the first flange and the push rod. One end of the spring abuts against the inner side of the first flange and the other end abuts against the end of the push rod, for applying elastic force to the push rod.

[0013] By adopting the above technical solution, the spring applies a continuous force to the outside of the housing to the push rod, so that the push rod can be fixed in the non-alarm position in its natural state.

[0014] Preferably, one end of the push rod extends outside the base. When the push rod is subjected to force, it compresses the spring and contacts the switch spring, thereby achieving the purpose of switching the state of the micro switch contact to generate an alarm. After the alarm is completed, the spring applies a reverse force to the push rod and returns it to its original position.

[0015] By adopting the above technical solution, when the circuit breaker trips, the push rod moves upward to close the first micro switch, thereby achieving the effect of alarm function.

[0016] Preferably, the rocker arm has a through hole, and the rocker arm is rotatably sleeved on the hinge shaft through the through hole, and the rocker arm has a groove.

[0017] Preferably, the side of the second micro switch is provided with an inclined spring.

[0018] Preferably, one end of the torsion spring abuts against the groove and the other end abuts against the third flange formed on the base, configured such that when the circuit breaker is in the open state, the abutting end of the swing arm is connected to the second micro switch.

[0019] By adopting the above technical solution, the torsion spring's function is to apply a force to the abutting end of the rocker arm when the circuit breaker contact leaves the protruding end of the rocker arm, so that the inclined spring is in a compressed state, which means the second micro switch is in the closed state. When the circuit breaker contact has not left the protruding end of the rocker arm, the abutting end will always be in a position away from the inclined spring, thus realizing the circuit breaker's opening and closing indication function, which is the contact auxiliary function.

[0020] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The beneficial effects of this utility model lie in its modular design, which independently arranges the auxiliary contacts and alarm contacts, effectively eliminating mutual interference between signals and thus significantly improving the accuracy and reliability of status monitoring. It is small in size and compact in structure. Furthermore, it adopts convenient plug-in or snap-on installation, abandoning the traditional screw connection method, greatly simplifying the assembly process and improving installation and maintenance efficiency. The modular design also enhances the flexibility of accessory configuration, enabling it to better adapt to different types of circuit breakers, improving the product's versatility and applicability. Attached Figure Description

[0021] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall external appearance of this utility model; Figure 2 This is a schematic diagram of the first cover plate of this utility model; Figure 3 This is a schematic diagram of the second cover plate of this utility model; Figure 4 This is a schematic diagram of the base of this utility model; Figure 5 This is a schematic diagram of the swing arm of this utility model; Figure 6 This is a schematic diagram of the push rod of this utility model; Figure 7 This is a schematic diagram of the alarm structure connection of this utility model; Figure 8 This is a schematic diagram of the auxiliary contact structure connection of this utility model.

[0023] in: 1. Base; 101. Partition plate; 102. Fixing column; 103. Hinge shaft; 104. First flange; 1041. Spring; 105. Second flange; 106. Third flange; 107. End plate; 108. First micro switch; 1081. Switch spring; 109. Second micro switch; 1091. Tilt spring; 2. First cover plate; 201. Fixing base; 3. Second cover plate; 4. Top rod; 5. Swing rod; 501. Torsion spring; 502. Groove; 503. Through hole; 504. Abutment end. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] See Figure 1 - Figure 8 A circuit breaker auxiliary alarm mechanism, comprising: like Figure 1 The circuit breaker auxiliary alarm device shown has a casing made of Figure 2 and Figure 3 The first cover plate 2 and the second cover plate 3 shown are mounted on the fixed post 102 by the fixed seat 201. Figure 3 The base 1 shown is divided into two parts by a partition 101. One part is equipped with parts for indicating the opening and closing of the circuit breaker, and the other part is equipped with parts for indicating the tripping alarm of the circuit breaker. The opening and closing indication function of the circuit breaker is mainly realized by the on and off of the first micro switch 108, and the tripping alarm indication function of the circuit breaker is mainly realized by the on and off of the second micro switch 109.

[0026] The opening / closing indication function of the first microswitch 108 is achieved by the separation and contact between the switch spring 1081 and the body of the first microswitch 108. When the switch spring 1081 moves away from the body of the first microswitch 108, the first microswitch 108 is in an open circuit state. When the switch spring 1081 is deformed by pressure and contacts the body of the first microswitch 108, the microswitch is in an open circuit state and an alarm is triggered. The operating principle of the second microswitch 109 is the same as that of the first microswitch 108, and will not be described in detail here.

[0027] Specifically, on the side where the first micro switch 108 is installed, a first flange 104, a second flange 105, and an end plate 107 are also provided on the partition 101. The first flange 104 is located at the edge of the partition 101 on the left side of the first micro switch 108, and the second flange 105 is installed below the first micro switch 108. The first flange 104 is L-shaped, so the spring 1041 can be installed inside the first flange 104. The spring 1041, the second flange 105, and the switch spring 1081 of the first micro switch 108 form an irregular groove 502. The upper part of the push rod 4 has the same shape as the irregular groove 502, but its size is slightly smaller than this irregular groove 502. Under the limiting action of the end plate 107 and the second flange 105, the push rod 4 can only move up and down in the direction of the spring force of the spring 1041. The lower half of the push rod 4 extends outward to the outside of the circuit breaker housing. When the push rod 4 moves upward to a certain position against the elastic force of the spring 1041, the inclined surface of the push rod 4 will press against the switch spring 1081 of the first micro switch 108. When it continues to move upward to the limit position, the switch spring 1081 contacts the first micro switch 108 to form a circuit, and the first micro switch 108 can give the corresponding indication signal.

[0028] Specifically, on the side where the second micro switch 109 is installed, a hinge shaft 103 is also provided on the partition 101. After the rocker arm 5 is rotatably installed on this hinge shaft 103 through the through hole 503, the torsion spring 501 is sleeved on the hinge shaft 103. One end of the torsion spring 501 abuts against the third flange 106, and the other end is embedded in the groove 502, forming a force that continuously pushes the abutting end 504 of the rocker arm 5 towards the third flange 106. The second micro switch 109 is provided in the direction path of this force. Thus, under the action of the torsion spring 501, the abutting end 504 continuously applies pressure to the inclined spring 1091 of the second micro switch 109, so that the inclined spring 1091 is always in contact with the body of the second micro switch 109. When the other end of the lever 5 is subjected to a horizontal force from the third flange 106, the lever 5 rotates in the opposite direction to the spring force of the torsion spring 501, causing the inclined spring 1091 to separate from the body of the second micro switch 109, thereby breaking the circuit.

[0029] Specifically, the third flange 106 is located below the second micro switch 109, at the edge of the base 1; when the base 1 is connected to the first cover plate 2 and the second cover plate 3, it is only necessary to align the positions of the fixing seat 201 and the fixing post 102, and then forcefully fit the fixing seat 201 onto the fixing post 102 to achieve quick fixation.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circuit breaker auxiliary alarm mechanism, characterized in that, The system includes a base (1) with a partition (101) in the middle. A first micro switch (108) and a second micro switch (109) are respectively installed on both sides of the partition (101). A top rod (4) that can slide vertically along the side of the first micro switch (108) is also provided on the side where the first micro switch (108) is installed. A rotatable swing rod (5) is installed on the other side of the partition (101). One end of the swing rod (5) extends to the outside of the base (1) and the other end abuts against the second micro switch (109). The end near the second micro switch (109) is the abutting end (504). A torsion spring (501) is provided at the center of the hinge shaft (103) of the swing rod (5). When the push rod (4) is driven to a certain height by external force, it can contact the first micro switch (108) to make the first micro switch (108) work to realize the alarm; When the circuit breaker is open, the swing arm (5) presses the second micro switch (109) under the action of the torsion spring (501). When the circuit breaker is closed, the swing arm (5) disengages from the second micro switch (109). The opening and closing status of the circuit breaker can be indicated by the change in the state of the switch.

2. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that, It also includes a first cover plate (2) and a second cover plate (3) installed on the outside of the base (1). The first cover plate (2) and the second cover plate (3) are provided with a fixing seat (201) that matches the fixing column (102). The first cover plate (2) and the second cover plate (3) are respectively fitted and connected to the base (1).

3. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: The base (1) is provided with a second flange (105) and an end plate (107). The push rod (4) is slidably disposed between the second flange (105) and the end plate (107), thereby enabling the push rod (4) to slide.

4. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: The base (1) is also provided with a first flange (104), and a spring (1041) is provided between the first flange (104) and the push rod (4). One end of the spring (1041) abuts against the inner side of the first flange (104) and the other end abuts against the end of the push rod (4) to apply elastic force to the push rod (4).

5. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: One end of the push rod (4) extends to the outside of the base (1). When the push rod (4) is subjected to force, the push rod (4) compresses the spring (1041) and touches the switch spring (1081) to achieve the purpose of switching the state of the micro switch contact to generate an alarm. After the alarm is completed, the spring (1041) applies a reverse force to the push rod (4) and restores the push rod (4) to its original position.

6. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: The swing rod (5) is provided with a through hole (503), and the swing rod (5) is rotatably sleeved on the hinge shaft (103) through the through hole (503). The swing rod (5) is provided with a groove (502).

7. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: The second micro switch (109) has an inclined spring (1091) on its side.

8. The circuit breaker auxiliary alarm mechanism according to claim 1, characterized in that: One end of the torsion spring (501) abuts in the groove (502) and the other end abuts in the third flange (106) formed on the base (1), and is configured such that when the circuit breaker is in the open state, the abutting end (504) of the swing arm (5) is connected to the second micro switch (109).

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