Assembly tool for moving contact of frame circuit breaker

Abstract

The utility model discloses a frame circuit breaker moving contact assembly tool, which comprises a clamp, a moving contact piece mounting seat is arranged on the clamping surface of the clamp, the moving contact piece mounting seat comprises a bottom plate and a base station, the cross section of the bottom plate is L-shaped, a clamping groove is arranged on the side surface of the bottom plate, a side plate is connected in the clamping groove, the clamping groove limits the upper and lower positions of the side plate, and the base station is arranged on the clamping surface of the clamp. The side plate is provided with a circular hole, a movable contact piece shaft is inserted in the circular hole, a plurality of movable contact pieces are sleeved on the movable contact piece shaft, the movable contact piece shaft is pressed on the partition plate, and the movable contact piece shaft is positioned by the side plate. When the movable contact piece is installed, the movable contact piece needs to be connected through the movable contact piece shaft firstly, then after the movable contact piece is installed in place, the positions of the movable contact piece shaft and the movable contact piece can be fixed through the side plate, the rigidity and the stability of installation of the movable contact piece are enhanced through the movable contact piece shaft, and the situation of angular deviation of the movable contact piece is reduced.

Description

Technical Field

[0001] This utility model relates to the field of assembly tooling technology for moving contacts, specifically to an assembly tooling for moving contacts of a frame circuit breaker. Background Technology

[0002] During the circuit breaker assembly process, multiple moving contacts need to be pressed into place simultaneously, and then pins are used to string the multiple moving contacts on the same shaft to position them. For example, a moving contact assembly fixture for a molded case circuit breaker provided in patent 202323227417.5 is used because the molded case support 201 and the parts for installing the moving contacts are integrally formed. During the assembly process of this circuit breaker, multiple moving contacts can only be placed on the spring in sequence. After pressing the moving contacts into place, pins are inserted into the pin fixing holes to connect the multiple moving contacts on the same pin, thus completing the installation of the moving contacts.

[0003] The moving contact is first installed on the spring and inside the partition. In order to facilitate the installation of the moving contact between the partitions, there must be a gap between the partition and the moving contact. Moreover, the moving contact is installed on the spring. The spring has poor rigidity, which makes the moving contact prone to angular deviation after installation. This will increase the pressure of the moving contact on the partition when the pressure plate is pressed down, and may even cause the partition to break, resulting in scrap. Therefore, in order to avoid the moving contact tilting when pressed, this moving contact assembly fixture was designed. Utility Model Content

[0004] The purpose of this utility model is to provide a moving contact assembly fixture for a frame circuit breaker. By designing a split moving contact mounting base, the moving contact shaft is positioned by the side plate to ensure that the moving contact is installed in place. During assembly, the moving contacts are first connected together by a pin, and the moving contact shaft is used to improve rigidity, so that multiple moving contacts are vertically distributed, reducing the possibility of the moving contacts tilting under pressure.

[0005] This utility model provides the following technical solution: a frame circuit breaker moving contact assembly fixture, including a clamp, a moving contact mounting seat is provided on the clamping surface of the clamp, the moving contact mounting seat includes a base plate and a base, the cross-section of the base plate is L-shaped, a slot is opened on the side of the base plate, a side plate is connected in the slot, the slot limits the upper and lower movement of the side plate, a circular hole is opened on the side plate, a moving contact shaft is inserted into the circular hole, a plurality of moving contact pieces are also sleeved on the moving contact shaft, the moving contact shaft is pressed on a partition plate, and the side plate positions the moving contact shaft.

[0006] According to the above technical solution, a spring groove is formed at one end of the base, a plurality of partitions are formed on the base, and partition blocks are formed on both sides of the partitions. The partition blocks are located in the spring groove, and two springs are provided in the spring groove. The springs are distributed on both sides of the partition blocks. The partitions and partition blocks separate the springs, so that the springs are evenly distributed on each moving contact piece, and the moving contact piece is subjected to uniform force.

[0007] According to the above technical solution, the fixture includes a base, a positioning plate, and a cylinder mounting plate. The positioning plate is formed on the upper end of the base, and the cylinder mounting plate is formed on the upper end of the positioning plate. The positioning plate is attached to the back of the movable contact mounting seat, and the mounting position of the movable contact mounting seat is positioned by the positioning plate.

[0008] According to the above technical solution, a cylinder is installed on the upper end of the cylinder mounting plate, a push rod is connected to the telescopic end of the cylinder, and a pressure block is connected to the lower end of the push rod. The pressure block presses multiple movable contact pieces between the partition plates. The height of the pressure block is controlled by the telescopic movement of the cylinder to press the movable contact pieces.

[0009] According to the above technical solution, a groove is provided inside the pressure block, and a contact point is formed on the moving contact piece. The groove is sleeved on the contact point of the moving contact piece, and the contact point is protected by avoiding the contact point on the moving contact piece through the groove.

[0010] According to the above technical solution, the pressure block is formed with multiple clamping plates, which are distributed on both sides of the groove. The clamping plates are inserted between the moving contact pieces, and the clamping plates are inserted between the moving contact pieces to separate the moving contact pieces and ensure the gap between the moving contact pieces.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] (1) For the split type of moving contact plate mounting base, the moving contact plates need to be connected together by pins to make the moving contact plates vertically distributed. Then, the moving contact plates are pressed into the partition by the clamp, which reduces the possibility of the moving contact plates tilting. At the same time, the pressing pressure will be transmitted to the moving contact plate shaft through the moving contact plate, reducing the pressure between the moving contact plate and the partition and reducing the possibility of the partition being damaged.

[0013] (2) At the same time, partition blocks are formed on the partition plate to separate the springs, so that the moving contact piece is subjected to stable force and evenly distributed.

[0014] (3) A clamping plate is formed on the pressure block and inserted between the moving contact pieces to ensure the uniform distribution of the moving contact pieces and prevent the moving contact pieces from shifting. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram showing the completed installation of the circuit breaker of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the circuit breaker of this utility model;

[0018] Figure 3 This is a schematic diagram of the moving contact mounting base of the circuit breaker according to this utility model;

[0019] Figure 4 This is an assembly diagram of the clamp and circuit breaker of this utility model;

[0020] Figure 5 This is an assembly diagram of the clamp and circuit breaker from another perspective of this utility model;

[0021] Figure 6 This is an exploded view of the clamp and circuit breaker of this utility model;

[0022] Figure 7 This is a perspective view of the pressing block of this utility model;

[0023] In the diagram: 1. Fixture; 11. Base; 12. Cylinder mounting plate; 13. Positioning plate; 2. Cylinder; 21. Push rod; 3. Pressure block; 31. Groove; 32. Clamping plate; 4. Moving contact piece; 41. Moving contact piece shaft; 5. Moving contact piece mounting seat; 51. Base; 511. Partition plate; 512. Partition block; 513. Spring; 52. Base plate; 521. Slot; 6. Side plate. 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] Please see Figures 1 to 6This utility model provides a technical solution: a moving contact assembly fixture for a frame circuit breaker, including a clamp 1. A moving contact mounting base 5 is provided on the clamping surface of the clamp 1. The moving contact mounting base 5 includes a base plate 52 and a base 51. The base plate 52 has an L-shaped cross-section. A slot 521 is provided on the side of the base plate 52, and a side plate 6 is embedded in the slot 521. The slot 521 limits the upper and lower positioning of the side plate 6. A circular hole is provided on the side plate 6, and a moving contact shaft 41 is inserted into the circular hole. Multiple moving contact pieces 4 are also sleeved on the moving contact shaft 41. The moving contact shaft 41 is pressed against a partition plate 511, and the side plate 6 positions the moving contact shaft 41. In this split-type moving contact mounting base 5, when installing the moving contact pieces 4, multiple moving contact pieces 4 are first inserted into a partition plate 511 via the moving contact shaft 41. This design enhances the rigidity of the movable contact 4. By supporting the movable contact 4 with the movable contact shaft 41, the movable contact 4 is kept vertical, allowing it to move downwards together. This prevents the movable contact 4 from tilting during assembly. After the movable contact 4 and the movable contact shaft 41 are pressed into place, the side plate 6 is embedded in the slot 521. The side plate 6 positions the movable contact 4 and the movable contact shaft 41, ensuring proper installation. Compared to existing assembly fixtures, which involve inserting pins after multiple movable contacts are installed, this design improves the process by inserting pins into multiple movable contacts before pressing. This results in better rigidity of the multiple movable contacts 4 during pressing, reducing the likelihood of tilting. Simultaneously, the movable contact shaft 41 can limit the movement of the movable contact 4, ensuring it remains vertical at all times.

[0026] like Figure 3 As shown, a spring groove is formed at one end of the base 51, and multiple partitions 511 are formed on the base 51. The partitions 511 separate different moving contact pieces 4 and springs 513 to prevent the springs 513 from intersecting. Partition blocks 512 are formed on both sides of the partitions 511. The partition blocks 512 are located in the spring grooves, and two springs 513 are provided in the spring grooves. The springs 513 are distributed on both sides of the partition blocks 512. The partition blocks 512 separate the two springs 513 in the partitions 511 to prevent the two springs 513 between the partitions 511 from getting close together, and further make the spring force on the moving contact piece 4 evenly distributed.

[0027] The fixture 1 includes a base 11, a positioning plate 13, and a cylinder mounting plate 12. The positioning plate 13 is formed on the upper end of the base 11, and the cylinder mounting plate 12 is formed on the upper end of the positioning plate 13. The positioning plate 13 is attached to the back of the movable contact mounting seat 5. The positioning plate 13 positions the movable contact mounting seat 5 so that the movable contact 4 is just in the pressing position.

[0028] like Figures 4 to 6As shown, a cylinder 2 is installed on the upper end of the cylinder mounting plate 12. A push rod 21 is connected to the telescopic end of the cylinder 2. A pressure block 3 is connected to the lower end of the push rod 21. The extension and retraction of the push rod 21 is controlled by the cylinder 2, so that the pressure block 3 moves to the surface of the movable contact piece 4. The pressure block 3 presses multiple movable contact pieces 4 between the partition plates 511.

[0029] like Figure 7 As shown, a groove 31 is provided inside the pressure block 3, and silver contacts are formed on the moving contact piece 4. The groove 31 is fitted onto the contacts of the moving contact piece 4, and the groove 31 protects the contacts on the moving contact piece 4.

[0030] Multiple clamping plates 32 are formed on the pressure block 3. The clamping plates 32 are distributed on both sides of the groove 31. The clamping plates 32 are inserted between the moving contact pieces 4. When the moving contact pieces 4 are pressed, the clamping plates 32 are used to separate the moving contact pieces 4, ensuring the uniformity of the gap between the moving contact pieces 4 and preventing the moving contact pieces 4 from tilting or shifting.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixture for assembling moving contacts of a frame circuit breaker, comprising a clamp, characterized in that: The clamping surface of the fixture is provided with a movable contact plate mounting seat. The movable contact plate mounting seat includes a base plate and a base. The cross-section of the base plate is L-shaped. A slot is opened on the side of the base plate. A side plate is connected in the slot. The slot limits the upper and lower movement of the side plate. A circular hole is opened on the side plate. A movable contact plate shaft is inserted into the circular hole. Multiple movable contact plates are also sleeved on the movable contact plate shaft. The movable contact plate shaft is pressed against the partition plate. The side plate positions the movable contact plate shaft.

2. The assembly fixture for the moving contact of a frame circuit breaker according to claim 1, characterized in that: One end of the base is formed with a spring groove, and multiple partitions are formed on the base. Partition blocks are formed on both sides of the partitions. The partition blocks are located in the spring groove, and two springs are provided in the spring groove, with the springs distributed on both sides of the partition blocks.

3. The assembly fixture for the moving contact of a frame circuit breaker according to claim 1, characterized in that: The fixture includes a base, a positioning plate, and a cylinder mounting plate. The positioning plate is formed on the upper end of the base, and the cylinder mounting plate is formed on the upper end of the positioning plate. The positioning plate is attached to the back of the moving contact plate mounting seat.

4. The frame circuit breaker moving contact assembly fixture according to claim 3, characterized in that: A cylinder is mounted on the upper end of the cylinder mounting plate. A push rod is connected to the telescopic end of the cylinder. A pressure block is connected to the lower end of the push rod. The pressure block presses multiple movable contact pieces between the partition plates.

5. The assembly fixture for the moving contact of a frame circuit breaker according to claim 4, characterized in that: The pressure block has a groove, and the movable contact piece has a contact point formed on it. The groove is fitted onto the contact point of the movable contact piece.

6. The assembly fixture for the moving contact of a frame circuit breaker according to claim 4, characterized in that: The pressure block has multiple clamping plates formed on it, which are distributed on both sides of the groove and are inserted between the moving contact pieces.

Images