A contact bracket assembly device for frame circuit breaker

Abstract

The present invention discloses a contact bracket assembly device for a frame circuit breaker, which is characterized in that it includes a base, a positioning cover, a limit block and a cushion block. A groove is provided in the middle of the base to facilitate making way for the assembled moving contact, and positioning grooves are provided on both sides of the groove. The limit block is arranged in the positioning groove to limit the left and right directions of the contact bracket; the positioning cover is arranged on the base and connected and fixed to the base, and the positioning cover is pressed on the contact bracket to provide positioning and keep the moving contact horizontal on the assembly device. The present invention has a simple structure, and can install or replace the matching limit block and positioning cover according to the model and specification of the moving contact to be assembled. It can assemble moving contact brackets of different models and specifications, has high versatility, is easy to adjust, and improves the utilization rate. It solves the problem that the contact bracket assembly cannot be kept horizontal, which affects the subsequent assembly, ensures the assembly quality of the moving contact, and improves the efficiency of subsequent production assembly and the performance of the frame circuit breaker.

Description

Technical Field

[0001] The invention relates to a contact bracket assembly device for a frame circuit breaker, belonging to the technical field of low-voltage electrical appliances. Background Art

[0002] The frame circuit breaker contact consists of a contact, a contact support, a spring, a shaft and a clamp. When the moving contact is installed in the base, the contact bracket needs to be assembled on the basis of the assembled contact. The assembly quality of the contact bracket directly affects the assembly of subsequent parts. The traditional contact bracket assembly method is to assemble directly without using an assembly device. This assembly method not only makes it impossible for the contact bracket to maintain horizontality, but also makes it impossible for the bottom plate to fit smoothly after the moving contact is installed in the base and tightened. It may even cause the assembled moving contact to be reworked during subsequent assembly. These directly affect the overall performance of the circuit breaker and reduce production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing contact bracket is assembled by direct assembly, the contact bracket cannot be kept horizontal, and the assembly quality is low.

[0004] In order to solve the above problems, the technical solution of the present invention is to provide a frame circuit breaker contact bracket assembly device, which is characterized by comprising a base, a positioning cover, a limit block and a cushion block, wherein a groove is provided in the middle of the base to facilitate making way for the assembled moving contact, positioning grooves are provided on both sides of the groove, and the limit block is provided in the positioning groove to limit the left and right directions of the contact bracket;

[0005] The positioning cover is arranged on the base and connected and fixed to the base. The inner side of the positioning cover is provided with a recessed portion and a circular hole for facilitating the moving contact to make way. The positioning cover is pressed on the contact bracket to provide positioning and keep the moving contact horizontal on the assembly device. The positioning cover and the base form a space for assembling the contact bracket. The front and rear sides of the base are provided with operation windows.

[0006] The cushion block is arranged on the positioning cover and is connected and fixed to the positioning cover and the moving contact.

[0007] Preferably, a U-shaped boss is provided in the groove, and the U-shaped boss is arranged along the front-to-back direction for positioning the contact bracket.

[0008] Preferably, a protrusion is provided on the lower surface of the positioning cover, and the positioning groove is L-shaped and provided on the side and bottom surface of the base, and the positioning cover is adapted to the part of the positioning groove located on the side surface of the base through the protrusion.

[0009] Preferably, boss 1 is provided at the bottom of the limit block, boss 2 is provided on the side, the limit block is arranged in the positioning groove through boss 1 and boss 2, and a limit groove for limiting the contact bracket is provided on the side of the limit block opposite to boss 2.

[0010] Preferably, the base is arranged on a support plate.

[0011] Preferably, the cushion block is fixed to the positioning cover and the moving contact by screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention has a simple structure, and can install or replace the matching limit block and positioning cover according to the model and specification of the moving contact to be assembled, and can assemble moving contact brackets of different models and specifications, with high versatility, convenient adjustment, and improved utilization. The positioning cover and the moving contact are fixed in place by the pad, and then the bolts of the assembled contact bracket are tightened. This solves the problem that the contact bracket assembly cannot maintain horizontality and affects the subsequent assembly, ensures the assembly quality of the moving contact, and improves the efficiency of subsequent production assembly and the performance of the frame circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of assembling a moving contact support by using a frame circuit breaker contact support assembly device of the present invention;

[0015] Figure 2 for Figure 1 Side view of;

[0016] Figure 3 A schematic structural diagram of a contact bracket assembly device for a frame circuit breaker of the present invention;

[0017] Figure 4 is a schematic diagram of the base structure;

[0018] Figure 5 It is a schematic diagram of the positioning cover structure;

[0019] Figure 6 It is a schematic diagram of the limit block structure. DETAILED DESCRIPTION

[0020] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0021] like Figure 3 As shown, a frame circuit breaker contact bracket assembly device of the present invention comprises a base 1, a positioning cover 2, a limit block 3 and a cushion block 4. The base 1 is located at the bottom of the device, and a support plate 5 of appropriate size is installed below it to facilitate the fixing of the device and avoid problems such as wear and position deviation caused by frequent movement of the device.

[0022] like Figure 4As shown, a groove 11 is processed in the middle of the base 1 to make room for the assembled moving contact 7. A U-shaped boss 14 is processed in the groove 11. The U-shaped boss 14 is arranged along the front-back direction to position the contact bracket 8. Positioning grooves 12 are processed on both sides of the groove 11. The positioning grooves 12 are L-shaped and arranged on the side and bottom of the base 1. They mainly play the role of supporting and fixing and making room for the moving contact 7. Figure 6 As shown, the bottom of the limit block 3 is processed with a boss 1 31, and the side is processed with a boss 2 32. The limit block 3 is installed in the positioning grooves 12 opened on both sides of the base 1 through the boss 1 31 and the boss 2 32. The side of the limit block 3 opposite to the boss 2 32 is provided with a limit groove 33 for limiting the contact bracket 8. The limit blocks 3 on the left and right sides are relatively arranged, and the matching limit blocks 3 are selected according to the different models and specifications of the moving contacts 7 to provide left and right direction limit for the installation and fastening of the contact bracket 8.

[0023] The positioning cover 2 is located above the base 1. Figure 5 As shown, the two sides of the lower surface of the positioning cover 2 are processed with protrusions 23, which are adapted to the part of the positioning groove 12 located on the side of the base 1. The middle of the positioning cover 2 is provided with a recessed portion 21 and a circular hole 22 for making way for the moving contact 7. According to the different types and specifications of contacts, a plurality of positioning covers 2 with circular holes 22 of different types and specifications are provided. The circular hole 22 passes through the moving contact 7 from above and presses on the contact bracket 8 to provide positioning and keep the moving contact 7 horizontal in the device, thereby ensuring the position accuracy and stability of the moving contact 7. The positioning cover 2 and the base 1 form a space for assembling the contact bracket 8, and the front and rear sides of the base 1 are processed with an operation window 13.

[0024] The cushion block 4 is placed on the positioning cover 2 and can be moved freely according to the moving contact 7 of different models and specifications. The moving contact 7, the positioning cover 2 and the cushion block 4 are fixed by screws 6.

[0025] The assembly device has a simple structure and can be used to assemble moving contact brackets 8 of different models and specifications. It has high versatility and is easy to adjust, thereby increasing the utilization rate. Figure 1 and Figure 2 As shown, this assembly device installs or replaces the matching limit block 3 according to the model and specification of the movable contact 7 to be assembled, places the movable contact 7 with the assembled contact bracket 8 and the unfastened bolt 9 in the groove 11 of the device, and then covers the device with the positioning cover 2 and uses the screw 6 to fix the pad 4, the positioning cover 2 and the movable contact 7 in place, and then tightens the bolt 9 of the assembled contact bracket 8 through the operation window 13. The problem that the assembly of the contact bracket 8 cannot be kept horizontal and affects the subsequent assembly is solved, the assembly quality of the movable contact 7 is guaranteed, and the efficiency of the subsequent production assembly and the performance of the frame circuit breaker are improved.

Claims

1. A contact bracket assembly device for a frame circuit breaker, characterized in that: The invention comprises a base (1), a positioning cover (2), a limiting block (3) and a cushion block (4); a groove (11) is provided in the middle of the base (1) for facilitating the movement of the assembled moving contact (7); positioning grooves (12) are provided on both sides of the groove (11); and the limiting block (3) is arranged in the positioning groove (12) for limiting the left and right directions of the contact bracket (8); The positioning cover (2) is arranged on the base (1) and is connected and fixed to the base (1). The inner side of the positioning cover (2) is provided with a recessed portion (21) and a circular hole (22) for facilitating the moving contact (7) to make way. The positioning cover (2) is pressed on the contact support (8) to provide positioning and keep the moving contact (7) horizontal on the assembly device. The positioning cover (2) and the base (1) form a space for assembling the contact support (8). The front and rear sides of the base (1) are provided with operation windows (13); The cushion block (4) is arranged on the positioning cover (2) and is connected and fixed to the positioning cover (2) and the moving contact (7); The lower surface of the positioning cover (2) is provided with a protrusion (23); the positioning groove (12) is L-shaped and is provided on the side and bottom surfaces of the base (1); the positioning cover (2) is adapted to the part of the positioning groove (12) located on the side surface of the base (1) through the protrusion (23); The bottom of the limit block (3) is provided with a boss 1 (31), and the side thereof is provided with a boss 2 (32); the limit block (3) is arranged in the positioning groove (12) through the boss 1 (31) and the boss 2 (32); and a limit groove (33) for limiting the contact bracket (8) is arranged on the side of the limit block (3) opposite to the boss 2 (32); The limit blocks (3) on the left and right sides are arranged relatively to each other, and the suitable limit blocks (3) are selected according to the movable contacts (7) of different models and specifications, and the contact brackets (8) are installed and fastened to provide limit in the left and right directions.

2. A frame circuit breaker contact bracket assembly device as claimed in claim 1, characterized in that: A U-shaped boss (14) is provided in the groove (11), and the U-shaped boss (14) is arranged along the front-to-back direction for positioning the contact bracket (8).

3. A frame circuit breaker contact bracket assembly device as claimed in claim 1, characterized in that: The base (1) is arranged on a support plate (5).

4. A frame circuit breaker contact support assembly device as claimed in claim 1, characterized in that: The cushion block (4) is connected and fixed to the positioning cover (2) and the moving contact (7) via screws (6).

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