Improved low-voltage molded case circuit breaker operating mechanism guide rod

Abstract

The utility model discloses an improved low-voltage molded case circuit breaker operating mechanism guide rod, which relates to the technical field of circuit breaker parts, and comprises a guide rod body, a positioning piece is arranged at the bottom end of the guide rod body, four second locking grooves are formed in the bottom end of the guide rod body, first locking grooves are formed above the second locking grooves, and the first locking grooves are arranged above the first locking grooves. According to the utility model, the synchronous movement of the plurality of moving blocks is realized through the linkage of the four driving rods, the coordination and stability of each moving block are ensured, and when one moving block slides, the limiting holes drive the driving rods, so that the other moving blocks also move along with the driving rods, thereby keeping the synchronism of the system. Furthermore, when the moving block is close to the guide rod body, an extrusion rod arranged on the moving block is accurately inserted into the first locking groove, the guide rod body is locked through extrusion force, the guide rod body is prevented from retreating, and smooth operation of opening operation is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker component technical field especially relates to an improved low voltage moulded case circuit breaker operating mechanism guide rod. BACKGROUND

[0002] MCC / PC switch basically adopts moulded case circuit breaker, and the moulded case circuit breaker operating mechanism is connected with the operating handle on the MCC / PC switch door through a square guide rod, and the opening and closing operation of the moulded case circuit breaker is carried out by rotating the operating handle.

[0003] However, in the prior art, the front and rear positions of the square guide rod are fixed by one or two bolts on the rotating sleeve of the moulded case circuit breaker operating mechanism, but the bolt tightness is insufficient and the surface of the square guide rod is relatively smooth, so the front and rear positions of the guide rod often change, when the position of the guide rod moves backward to a specific position, the panel inside the moulded case circuit breaker operating mechanism is blocked, so that the panel is stuck, and then the operating handle cannot drive the guide rod to rotate to separate the moulded case circuit breaker, since the switch has a five-proof locking function, the MCC / PC switch cabinet door drawer is difficult to open under the condition that the moulded case circuit breaker is not separated, which causes difficulties in operation and maintenance work for the operation and maintenance personnel, and there are safety risks and equipment hazards. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the problem that the bolt tightness is insufficient and the surface of the square guide rod is relatively smooth in the prior art, the front and rear positions of the guide rod often change, when the position of the guide rod moves backward to a specific position, the panel inside the moulded case circuit breaker operating mechanism is blocked, so that the panel is stuck, and puts forward an improved low voltage moulded case circuit breaker operating mechanism guide rod.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: an improved low voltage moulded case circuit breaker operating mechanism guide rod, including guide rod body, the bottom end of guide rod body is provided with positioning piece, four second locking grooves are opened in the bottom end of guide rod body, the first locking groove is arranged above the second locking groove, the positioning piece is provided with locking mechanism above,

[0006] The locking mechanism includes a frame, the inner side bottom end of the frame is fixedly connected with a bottom plate, four tracks are fixedly connected on the surface of the bottom plate, a guide block is slidably connected in the track, the top of the guide block is fixedly connected with a moving block, two limiting holes are opened on the surface top end of the moving block, a guide hole is opened on the surface of the bottom plate, a guide rod is slidably connected in the guide hole, the top of the guide rod is fixedly connected with a driving rod, and the driving rod is slidably connected with the limiting hole at both ends.

[0007] Preferably, one end of the moving block is fixedly connected with an extrusion rod, and the other end of the extrusion rod abuts against the inner wall of the first locking groove.

[0008] Preferably, one side of the frame is fixedly connected with a fixing frame, and a threaded rod is threadedly connected to the middle of the fixing frame.

[0009] Preferably, one end of the threaded rod is rotatably connected with one of the moving blocks, and the guide block is slidably connected with the track.

[0010] Preferably, the two ends of the driving rod pass through the limiting hole, and the cross section of the guide block is a trapezoidal structure.

[0011] Preferably, the positioning member comprises a shell, and the shell is fixedly connected with the bottom plate at the top.

[0012] Preferably, a fixing bolt is threadedly connected to the outer side of the shell, and one end of the fixing bolt abuts against the inner wall of the second locking groove.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1、in the utility model, the linkage of four driving rods realizes the synchronous movement of multiple moving blocks, ensures the coordination and stability of each moving block, whenever a moving block slides, the limiting hole drives the driving rod, so that other moving blocks also follow the movement, thereby maintaining the synchronism of the system, further, when the moving block approaches the guide rod body, the extrusion rod arranged thereon is accurately inserted into the first locking groove, the guide rod body is locked through the extrusion force, the retreat of the guide rod body is prevented, and the smooth operation of the opening and closing operation is ensured.

[0015] 2、in the utility model, the fixing bolt is inserted into the second locking groove to effectively fasten the guide rod body, ensures that the guide rod body does not change position in long-term use, enhances the stability of the system, avoids the deviation caused by vibration or external force interference, the rotation of the threaded rod can push the moving block to move along the predetermined track, in combination with the synergistic effect of the driving rod and the limiting hole, multiple moving blocks and extrusion rods trigger the further locking of the guide rod, ensure that the guide rod is always stably supported, the precise cooperation of the guide block and the track limits the deviation in the vertical direction, ensures the accurate position of the guide rod in multiple movements, in addition, the accurate movement path of the guide rod at the bottom of the driving rod in the guide hole makes the operation of the driving system more stable, avoids the inaccurate guide causing the misoperation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 An overall three-dimensional structure schematic view of an improved low-voltage molded case circuit breaker operating mechanism guide rod is provided for the utility model;

[0017] Figure 2 A partial three-dimensional structure schematic view of an improved low-voltage molded case circuit breaker operating mechanism guide rod is provided for the utility model;

[0018] Figure 3This utility model provides a three-dimensional structural diagram of the disassembled guide rod of the operating mechanism of an improved low-voltage molded case circuit breaker.

[0019] Figure 4 This utility model presents a three-dimensional structural diagram of the locking mechanism of the guide rod of the operating mechanism of an improved low-voltage molded case circuit breaker.

[0020] Legend: 1. Guide rod body; 11. First locking groove; 12. Second locking groove; 2. Locking mechanism; 21. Frame; 211. Fixing bracket; 221. Guide hole; 22. Base plate; 23. Track; 24. Moving block; 241. Limiting hole; 242. Pressing rod; 25. Threaded rod; 26. Drive rod; 27. Guide block; 28. Guide rod; 3. Positioning component; 31. Housing; 32. Fixing bolt. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides an improved low-voltage molded case circuit breaker operating mechanism guide rod, including a guide rod body 1, a positioning element 3 at the bottom end of the guide rod body 1, four second locking grooves 12 at the bottom end of the guide rod body 1, a first locking groove 11 above the second locking grooves 12, and a locking mechanism 2 above the positioning element 3.

[0024] The locking mechanism 2 includes a frame 21, a base plate 22 is fixedly connected to the bottom inner side of the frame 21, four rails 23 are fixedly connected to the surface of the base plate 22, guide blocks 27 are slidably connected inside the rails 23, a moving block 24 is fixedly connected to the top of the guide block 27, two limiting holes 241 are opened at the top of the surface of the moving block 24, a guide hole 221 is opened on the surface of the base plate 22, a guide rod 28 is slidably connected inside the guide hole 221, a drive rod 26 is fixedly connected to the top of the guide rod 28, and both ends of the drive rod 26 are slidably connected to the limiting holes 241.

[0025] The specific setup and function of this embodiment are described below. When a movable block 24 slides along the guide rail, the two limiting holes 241 on its top will connect with the drive rods 26, achieving mechanical transmission through the linkage of the drive rods 26. Specifically, when the movable block 24 slides, its limiting holes 241 drive the two drive rods 26 to move, and these two drive rods 26 are respectively embedded in the limiting holes 241 on the surface of other movable blocks 24, thereby triggering the synchronous action of the other movable blocks 24. Under the coordinated action of the four drive rods 26, an interconnected transmission structure is formed, so that whenever one movable block 24 moves, the other three movable blocks 24 can also maintain synchronous movement, ensuring the coordination and stability of the entire system.

[0026] As the moving block 24 gradually approaches the guide rod body 1, the pressing rod 242 at one end of the moving block 24 precisely inserts into the first locking groove 11 on the guide rod body 1. At this time, the pressing rod 242 exerts a pressing force on the inner wall of the first locking groove 11, thereby achieving the locking effect on the guide rod body 1. This design effectively fixes the front and rear position of the guide rod body 1, preventing the guide rod body 1 from retracting. Retraction of the guide rod may obstruct the operation of the internal sector plate, making it impossible to complete the opening operation. Therefore, the application of the locking mechanism ensures the reliable positioning of the guide rod and the normal use of the opening function.

[0027] Furthermore, this linkage and locking mechanism 2 design has several advantages. On the one hand, the linkage of the four drive rods 26 ensures that the movement of multiple moving blocks 24 is highly consistent, avoiding deviations and malfunctions that may be caused by a single drive. On the other hand, the precise fit between the pressing rod 242 and the locking groove not only firmly fixes the guide rod but also reduces errors in locking and unlocking operations, improving the service life and safety of the equipment.

[0028] Example 2: Figure 2 - Figure 4 As shown, a pressing rod 242 is fixedly connected to one end of the moving block 24, and one end of the pressing rod 242 abuts against the inner wall of the first locking groove 11. A fixing frame 211 is fixedly connected to one side of the frame 21, and a threaded rod 25 is threadedly connected to the middle of the fixing frame 211. One end of the threaded rod 25 is rotatably connected to one of the moving blocks 24, and the guide block 27 is slidably connected to the track 23. Both ends of the drive rod 26 pass through the limiting hole 241, and the guide block 27 has a trapezoidal cross-section. The positioning component 3 includes a housing 31, the top of which is fixedly connected to the bottom plate 22. A fixing bolt 32 is threadedly connected to the outside of the housing 31, and one end of the fixing bolt 32 abuts against the inner wall of the second locking groove 12.

[0029] The effect achieved by the whole embodiment is that when initially installing the connection, by screwing the fixing bolt 32 and inserting it into the second locking groove 12, not only can the guide rod body 1 be effectively fastened, but also the insertion of the fixing bolt 32 into the second locking groove 12 further ensures that the guide rod body 1 will not change position during long-term use. This design ensures the stability after installation, avoids the position deviation of the guide rod due to vibration or external force interference during use, thereby enhancing the overall precision and reliability of the equipment.

[0030] In addition, when the threaded rod 25 is rotated, a moving block 24 can be pushed to move along the predetermined track 23. Under the cooperation of the driving rods 26 and the limiting holes 241, the movement of the moving block 24 can effectively trigger the further locking of the four moving blocks 24 and the extrusion rods 242 on one side of the guide rod body 1. This structural design enables the guide rod to be stably supported during use, preventing it from loosening or position error due to external force changes. In particular, when the moving block 24 moves, the guide block 27 at the bottom will slide inside the track 23, and the precise design of the track 23 will limit the vertical movement space of the guide block 27, thereby ensuring that the guide block 27 will not deviate during multiple movements, ensuring that the guide rod always remains in the predetermined position.

[0031] Meanwhile, the movement path of the guide rod 28 at the bottom of the driving rod 26 inside the guide hole 221 ensures that the driving rod 26 can move accurately along the track of the guide hole 221 when moving, and this design makes the movement of the entire driving system more stable and orderly, avoiding misoperation due to inaccurate guidance.

[0032] The use method and working principle of the device are as follows: when initially installing, the fixing bolt 32 is screwed and inserted into the second locking groove 12. The fixing bolt 32 not only fastens the guide rod body 1, but also further ensures that the guide rod body 1 will not change position during multiple uses by inserting into the second locking groove 12.

[0033] In addition, when the threaded rod 25 is rotated, a moving block 24 can be pushed to move. When the moving block 24 slides, the two driving rods 26 are moved by the two limiting holes 241 at the top of the moving block 24. With the movement of the two driving rods 26, the limiting holes 241 inside the other moving block 24 surface will also produce corresponding movement. Under the cooperation of the four driving rods 26, when one moving block 24 moves, the other three moving blocks 24 will move synchronously. As the moving block 24 gradually approaches the guide rod body 1, the extrusion rod 242 at one end will be inserted into the first locking groove 11 and extrude the inside of the first locking groove 11, thereby completing the locking of the guide rod body 1. This can effectively prevent the guide rod body 1 from changing position, avoid the guide rod body 1 moving backward and blocking the internal sector plate, and ensure that the device can be used normally.

[0034] During the movement of the moving block 24, the guide block 27 at the bottom of the moving block 24 slides in the track 23, and the track 23 can limit the movement space of the guide block 27 in the vertical direction, so as to ensure that the moving block 24 will not be deviated after multiple movements. In addition, the guide rod 28 at the bottom of the driving rod 26 moves in the guide hole 221, so as to guide the driving rod 26 to move stably along the track of the guide hole 221.

[0035] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. An improved low-voltage molded case circuit breaker operating mechanism guide rod, comprising a guide rod body (1), the bottom end of the guide rod body (1) is provided with a positioning piece (3), characterized in that: The guide rod body (1) is provided with four second locking grooves (12) at the bottom end, a first locking groove (11) is arranged above the second locking groove (12), and a locking mechanism (2) is arranged above the positioning piece (3); The locking mechanism (2) comprises a frame (21), the inner side of the frame (21) is fixedly connected with a bottom plate (22) at the bottom end, the surface of the bottom plate (22) is fixedly connected with four tracks (23), the inside of the track (23) is slidably connected with a guide block (27), the top of the guide block (27) is fixedly connected with a moving block (24), two limiting holes (241) are formed at the top end of the surface of the moving block (24), a guide hole (221) is formed in the surface of the bottom plate (22), a guide rod (28) is slidably connected in the guide hole (221), the top of the guide rod (28) is fixedly connected with a driving rod (26), and both ends of the driving rod (26) are slidably connected with the limiting holes (241).

2. An improved low voltage molded case circuit breaker operating mechanism guide rod as claimed in claim 1 wherein: One end of the moving block (24) is fixedly connected with an extrusion rod (242), and the extrusion rod (242) abuts against the inner wall of the first locking groove (11).

3. An improved low voltage molded case circuit breaker operating mechanism guide rod as claimed in claim 1 wherein: One side of the frame (21) is fixedly connected with a fixing frame (211), and the middle of the fixing frame (211) is threadedly connected with a threaded rod (25).

4. An improved low voltage molded case circuit breaker operating mechanism guide rod as claimed in claim 3 wherein: One end of the threaded rod (25) is rotatably connected with one of the moving blocks (24), and the guide block (27) is slidably connected with the track (23).

5. The improved low voltage molded case circuit breaker operating mechanism guide rod of claim 1, wherein: Both ends of the driving rod (26) pass through the limiting holes (241), and the guide block (27) is in a trapezoidal structure.

6. An improved low voltage molded case circuit breaker operating mechanism guide rod as claimed in claim 1 wherein: The positioning piece (3) comprises a shell (31), and the top of the shell (31) is fixedly connected with the bottom plate (22).

7. An improved low voltage molded case circuit breaker operating mechanism guide rod as claimed in claim 6 wherein: The outer side of the shell (31) is threadedly connected with a fixing bolt (32), and one end of the fixing bolt (32) abuts against the inner wall of the second locking groove (12).

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