Moulded case circuit breaker microswitch push rod structure

Abstract

The utility model discloses a microswitch push rod structure of a molded case circuit breaker. The circuit breaker comprises an operating mechanism, the operating mechanism is arranged in the circuit breaker, and the operating mechanism is composed of a push rod, a lock catch, a jump pin and a side plate; the side plate is arranged on one side of the operating mechanism; a first rotating shaft is arranged at the front end of the ejector rod, and the ejector rod is rotationally mounted at the front end of the side plate through a second rotating shaft; and the lock catch is arranged at the rear end of the side plate. The ejector rod is made of a metal piece and can effectively resist deformation in a high-temperature working environment, the convex points are arranged on the ejector rod, the ejector rod can be prevented from being separated in the long-term working process when the ejector rod is tightly matched with the lining, the anti-deformation reinforcing ribs are further arranged on the ejector rod, the ejector rod can be further prevented from being deformed, and the service life of the ejector rod is prolonged. Therefore, the ejector rod structure is resistant to high-temperature deformation and high in matching performance.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a micro switch push rod structure of a molded case circuit breaker. Background Art

[0002] The micro switch of the molded case circuit breaker uses an operating mechanism to drive a fork, which contacts the micro switch through the fork. When the existing molded case circuit breaker is used in a high temperature environment, adjusting the micro switch will cause the push rod mechanism to be easily deformed, and the matching between the push rod structure and the micro switch will be unstable, resulting in the micro switch being unable to be triggered. Utility Model Content

[0003] The purpose of the utility model is to provide a micro switch push rod structure for a molded case circuit breaker to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a micro switch push rod structure for a molded case circuit breaker, comprising:

[0005] An operating mechanism is provided inside the circuit breaker and is composed of a push rod, a lock catch, a trip catch, and a side plate;

[0006] a side plate, the side plate being arranged on one side of the operating mechanism;

[0007] A push rod, wherein a first rotating shaft is provided at the front end of the push rod, and the push rod is rotatably mounted on the front end of the side plate via a second rotating shaft;

[0008] A lock buckle, the lock buckle being arranged at the rear end of the side panel;

[0009] A jump buckle, wherein the jump buckle is rotatably connected to the side plate and the jump buckle is overlapped with the lock buckle;

[0010] A micro switch is arranged inside the operating mechanism.

[0011] By adopting the above technical solution, when the operating mechanism is re-engaged, the first overlapping point of the tripping buckle overlaps the lock buckle, and the second overlapping point moves the push rod in the direction of overcoming the spring tension, and the bushing triggers the microswitch, causing the microswitch to output a circuit breaker re-engagement ready state signal; and when the operating mechanism is tripped, the first overlapping point on the tripping buckle is disengaged from the lock buckle, and the second overlapping point, through the tension of the spring, causes the bushing to move to release the contact of the microswitch, thereby resetting the microswitch, and the microswitch outputs a circuit breaker tripping state signal; therefore, the state of the operating mechanism can be directly observed by the user through the triggering of the microswitch.

[0012] Preferably, a spring hanging hole is provided on one side of the top of the push rod, and convex points are provided on the other side of both ends of the push rod, and a bushing is installed on the push rod through the convex points.

[0013] By adopting the above technical solution, the push rod is stably and firmly mounted with the bushing via the convex point, thereby preventing the bushing from being separated from the push rod during long-term operation.

[0014] Preferably, a first overlapping point and a second overlapping point are respectively installed at both ends of the jump buckle.

[0015] By adopting the above technical solution, when the operating mechanism is buckled again, the first overlapping point on the jump buckle and the lock buckle will overlap; when the operating mechanism is disengaged, the first overlapping point on the jump buckle and the lock buckle will be separated; in this process, the bushing can control the start of the micro switch.

[0016] Preferably, a second rotating shaft is provided at one end of one side of the side plate close to the first rotating shaft, and a spring is installed on the push rod through the spring hanging hole and the second rotating shaft.

[0017] By adopting the above technical solution, the spring cooperates between the second rotating shaft and the spring hanging hole, and the push rod can move through the rotation of the trip buckle, so that the push rod can drive the bushing to move, thereby triggering the micro switch, and when tripped, the push rod can be reset by the spring.

[0018] Preferably, a bushing insertion hole is provided on one side of the bushing, a movable push rod is provided on the micro switch, and the bushing is overlapped with the movable push rod.

[0019] By adopting the above technical solution, when the operating mechanism is re-engaged, the bushing will squeeze the movable push rod and trigger the micro switch; when the operating mechanism is disengaged, the bushing will not squeeze the movable push rod to close the micro switch.

[0020] Preferably, the push rod is made of metal, and a reinforcing rib is provided on the top of the push rod.

[0021] By adopting the above technical solution, since the push rod is a metal part and is provided with reinforcing ribs, the strength of the push rod can be improved and the push rod can be prevented from deformation. In addition, there are convex points on the push rod, and the bushing is stably and firmly installed on the push rod through the convex points, so that the bushing can further limit the deformation of the push rod; therefore, the push rod will not be deformed in a high temperature resistant environment, and the matching is strong.

[0022] Preferably, rotation holes are provided at the bottoms of both sides of the push rod, and the push rod is rotatably connected to the side plate via a first rotating shaft.

[0023] By adopting the above technical solution, the push rod can rotate on the side plate, and the spring can limit the rotation range of the push rod, which can be overlapped in conjunction with the jump buckle.

[0024] Preferably, a connecting shaft is provided on one end of one side of the side plate close to the first rotating shaft, and the jump buckle is rotatably connected to the side plate via the connecting shaft.

[0025] By adopting the above technical solution, the jump buckle rotates along the connecting axis to achieve overlapping between the lock buckle, the jump buckle and the push rod.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the push rod structure of the micro switch of the molded case circuit breaker is made of a metal part, which can effectively resist deformation in a high-temperature working environment, and a convex point is provided on the push rod, which can prevent separation during long-term work when tightly matched with the bushing, and the push rod is also provided with anti-deformation reinforcement ribs, which can further prevent the push rod from deformation. Therefore, the push rod structure is not only resistant to high-temperature deformation, but also has strong matching performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is the overall side structural diagram of the circuit breaker of the utility model;

[0028] Figure 2 This is a three-dimensional diagram of the operating mechanism of the utility model;

[0029] Figure 3 This is a partial diagram of the operating mechanism of the utility model;

[0030] Figure 4 This is a three-dimensional diagram of the jump button of the utility model;

[0031] Figure 5 This is a three-dimensional diagram of the micro switch of the utility model;

[0032] Figure 6 This is a three-dimensional diagram of the top rod of the utility model;

[0033] Figure 7 This is a three-dimensional diagram of the bushing of the present utility model.

[0034] In the figure: 1. Bushing; 2. Push rod; 3. First rotating shaft; 4. Spring; 5. Second rotating shaft; 6. Micro switch; 7. Lock; 8. Jump buckle; 9. Side panel; 10. First overlapping point; 11. Second overlapping point; 12. Movable push rod; 13. Bump; 14. Spring hanging hole; 15. Bushing socket. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-7 The present invention provides an embodiment of a molded case circuit breaker micro switch push rod structure, comprising:

[0037] The operating mechanism is arranged inside the circuit breaker and consists of a top rod 2, a lock 7, a tripping buckle 8 and a side plate 9;

[0038] Side plate 9, side plate 9 is arranged on one side of the operating mechanism;

[0039] A push rod 2, a first rotating shaft 3 is provided at the front end of the push rod 2, and the push rod 2 is rotatably mounted on the front end of the side plate 9 through the second rotating shaft 3;

[0040] The lock buckle 7 is provided at the rear end of the side plate 9;

[0041] The jump buckle 8 is rotatably connected to the side plate 9, and the jump buckle 8 overlaps the lock buckle 7;

[0042] The micro switch 6 is arranged inside the operating mechanism.

[0043] When the operating mechanism is re-locked, the first overlapping point 10 of the tripping buckle 8 overlaps with the lock buckle 7, and the second overlapping point 11 moves the push rod 2 in the direction of overcoming the tension of the spring 4, and the bushing 1 triggers the microswitch 6, so that the microswitch 6 outputs a circuit breaker re-locking ready state signal; when the operating mechanism is tripped, the first overlapping point 10 on the tripping buckle 8 is disengaged from the lock buckle 7, and the second overlapping point 11, through the tension of the spring 4, causes the bushing 1 to move and release the contact of the microswitch 6, thereby resetting the microswitch 6, and the microswitch 6 outputs a circuit breaker tripping state signal; therefore, the state of the operating mechanism can be directly observed by the user through the triggering of the microswitch 6.

[0044] In this embodiment, a spring hanging hole 14 is provided on one side of the top of the push rod 2, and a protrusion 13 is provided on the other side of the two ends of the push rod 2. The push rod 2 is installed with the bushing 1 through the protrusion 13. The push rod 2 is stably and firmly installed with the bushing 1 through the protrusion 13, so that the bushing 1 can be prevented from detaching from the push rod 2 during long-term work; and the bushing 1 has different models, which can match one or more micro switches 6 and micro switches 6 of different models, so that the bushing 1 can be adjusted according to different quantities and different models of micro switches 6, so the model of the bushing 1 is not limited in this application.

[0045] In this embodiment, a first overlapping point 10 and a second overlapping point 11 are respectively installed at both ends of the jump buckle 8. When the operating mechanism is buckled again, the first overlapping point 10 on the jump buckle 8 will overlap with the lock buckle 7; when the operating mechanism is disengaged, the first overlapping point 10 on the jump buckle 8 will be separated from the lock buckle 7; in this process, the bushing 1 can control the start of the micro switch 6.

[0046] In this embodiment, a second rotating shaft 5 is provided on one end of the side plate 9 close to the first rotating shaft 3, and the push rod 2 is installed with a spring 4 through the spring hanging hole 14 and the second rotating shaft 5. The spring 4 cooperates between the second rotating shaft 5 and the spring hanging hole 14. When the push rod 2 is moved by the rotation of the trip buckle 8, the push rod 2 can drive the bushing 1 to move, thereby triggering the micro switch 6, and when the trip is triggered, the push rod 2 can be reset by the spring 4.

[0047] In this embodiment, a bushing socket 15 is opened on one side of the bushing 1, and a movable push rod 12 is provided on the micro switch 6. The bushing 1 and the movable push rod 12 are overlapped. When the operating mechanism is buckled again, the bushing 1 will squeeze the movable push rod 12 and trigger the micro switch 6; when the operating mechanism is disengaged, the bushing 1 will not squeeze the movable push rod 12 to close the micro switch 6.

[0048] In this embodiment, the push rod 2 is made of metal and a reinforcing rib is provided on the top of the push rod 2. Since the push rod 2 is a metal part and the reinforcing rib is provided on the push rod 2, the strength of the push rod 2 can be improved and the push rod 2 can be prevented from being deformed. A protrusion 13 is provided on the push rod 2, and the bushing 1 is stably and firmly installed on the push rod 2 through the protrusion 13, so that the bushing 1 can further limit the deformation of the push rod 2; therefore, the push rod 2 will not be deformed in a high temperature resistant environment and has a strong matching performance.

[0049] In this embodiment, rotation holes are provided at the bottom of both sides of the top rod 2, and the top rod 2 is rotatably connected to the side plate 9 through the first rotating shaft 3, so that the top rod 2 can rotate on the side plate 9, and the spring 4 can limit the rotation range of the top rod 2 and can cooperate with the jump buckle 8 for overlap.

[0050] In this embodiment, a connecting shaft is set on one side of the side plate 9 near one end of the first rotating shaft 3, and the jump buckle 8 is rotatably connected to the side plate 9 through the connecting shaft. The jump buckle 8 rotates along the connecting shaft to achieve overlap between the lock buckle 7, the jump buckle 8 and the top rod 2.

[0051] Working principle: When the operating mechanism is re-locked, the first overlapping point 10 on the tripping buckle 8 overlaps with the lock buckle 7, and the second overlapping point 11 pushes the push rod 2 in the direction of overcoming the tension of the spring 4. The bushing 1 will squeeze the movable push rod 12 on the micro switch 6, thereby starting the micro switch 6, so that the micro switch 6 outputs the circuit breaker re-locking ready state signal; when the operating mechanism is tripped, the first overlapping point 10 on the tripping buckle 8 disengages from the lock buckle 7, the second overlapping point 11 will release the tension of the spring 4, the bushing 1 will leave the movable push rod 12 on the micro switch 6, and the micro switch 6 will reset, so that the micro switch 6 outputs the circuit breaker tripping state signal.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or scope of the present invention. Therefore, the embodiments of the present invention are illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and scope of equivalents of the claims be encompassed within the present invention. Any reference numerals in the claims should not be construed as limiting the claim to which they relate.

Claims

1. A micro switch push rod structure for a molded case circuit breaker, characterized in that: include: An operating mechanism, the operating mechanism being arranged inside the circuit breaker, the operating mechanism comprising a top rod (2), a lock catch (7), a trip catch (8) and a side plate (9); A side plate (9), the side plate (9) being arranged on one side of the operating mechanism; A push rod (2), wherein a first rotating shaft (3) is provided at the front end of the push rod (2), and the push rod (2) is rotatably mounted on the front end of the side plate (9) via a second rotating shaft (3); A lock buckle (7), wherein the lock buckle (7) is arranged at the rear end of the side plate (9); A jump buckle (8), wherein the jump buckle (8) is rotatably connected to the side plate (9), and the jump buckle (8) is overlapped with the lock buckle (7); A micro switch (6), wherein the micro switch (6) is arranged inside the operating mechanism.

2. The micro switch push rod structure of a molded case circuit breaker according to claim 1, characterized in that: A spring hanging hole (14) is provided on one side of the top of the push rod (2), and convex points (13) are provided on the other side of both ends of the push rod (2). The push rod (2) is mounted with a bushing (1) via the convex points (13).

3. The micro switch push rod structure of a molded case circuit breaker according to claim 1, characterized in that: A first overlapping point (10) and a second overlapping point (11) are respectively installed at both ends of the jump buckle (8).

4. The micro switch push rod structure of a molded case circuit breaker according to claim 2, characterized in that: A second rotating shaft (5) is provided at one end of one side of the side plate (9) close to the first rotating shaft (3), and a spring (4) is installed on the top rod (2) through the spring hanging hole (14) and the second rotating shaft (5).

5. The micro switch push rod structure of a molded case circuit breaker according to claim 2, characterized in that: A bushing insertion hole (15) is provided on one side of the bushing (1), a movable push rod (12) is provided on the micro switch (6), and the bushing (1) and the movable push rod (12) are overlapped.

6. The micro switch push rod structure of a molded case circuit breaker according to claim 1, characterized in that: The material of the push rod (2) is a metal piece, and a reinforcing rib is provided on the top of the push rod (2).

7. The micro switch push rod structure of a molded case circuit breaker according to claim 1, characterized in that: Rotation holes are provided at the bottoms of both sides of the push rod (2), and the push rod (2) is rotatably connected to the side plate (9) via a first rotating shaft (3).

8. The micro switch push rod structure of a molded case circuit breaker according to claim 4, characterized in that: A connecting shaft is provided on one end of one side of the side plate (9) close to the first rotating shaft (3), and the jump buckle (8) is rotatably connected to the side plate (9) via the connecting shaft.

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