Flow divider with preset screw

Abstract

A shunt with a preset screw comprises a manganese-copper plate, rectangular red copper plates are welded to the left side and the right side of the manganese-copper plate, threaded holes are symmetrically formed in the positions, close to the manganese-copper plate, of the two red copper plates, through holes are symmetrically formed in the positions, away from the manganese-copper plate, of the two red copper plates, a pressing rivet bolt is fixed in each through hole in a pressing rivet mode, and a pressing rivet head of each pressing rivet bolt is matched with the corresponding through hole. The lower side of a pressing rivet head of the pressing rivet bolt is flush with the lower side of the red copper plate, a screw of the pressing rivet bolt vertically extends upwards and exceeds the through hole, and an annular recess surrounding the through hole is formed in the position, corresponding to the joint of each through hole and the screw, of the upper side of the red copper plate. The method comprises the following steps that a squeeze riveter is prepared, a punch of the squeeze riveter is provided with a receding hole and an annular boss, a bottom die of the squeeze riveter is a plane bottom die, a squeeze riveting bolt to be subjected to squeeze riveting and a red copper plate through hole are positioned and pre-assembled, the squeeze riveter is started to complete squeeze riveting, and an annular recess is formed in the joint of the through hole and the screw. The problem that when a traditional flow divider is used, a bolt head cannot be fixed due to space limitation is solved.

Description

Technical Field

[0001] The utility model relates to a diverter with a preset screw. Background Art

[0002] A diverter is an essential component in intelligent circuit breakers, power supplies, disconnect switches, and test instruments. For its mechanical structure, reference can be made to Chinese Patent CN208270633U. Generally, a manganese copper plate is used as the resistance material, and copper plates are welded on both sides of the manganese copper plate for current access, and sampling is carried out near the manganese copper plate. In the prior art, the diverter is provided with wiring holes for current access at the outer sides where the two copper plates are far away from each other, and threaded holes for sampling are provided near the manganese copper plate. The defect of the prior art is that the diverter needs to be connected to the current through connection with a pressing plate, and there are also wiring holes on the pressing plate. The diverter and the pressing plate are fixedly connected by screwing with bolts and nuts. When the diverter and the pressing plate are screwed and fastened with bolts and nuts, generally, the bolt head needs to be fixed first, and then the nut is rotated. However, the installation position space of the diverter is limited, and the condition for fixing the bolt head is often not available, so it is difficult to complete the fastening operation during use. Moreover, due to the low strength of copper itself, deformation is likely to occur, and the bolt is prone to relative rotation with the copper plate in the traditional way of presetting bolts. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a diverter with a preset screw, which solves the problem that the bolt head cannot be fixed due to limited space during the use of the traditional diverter by presetting screws at the current wiring holes of the traditional diverter through a riveting process.

[0004] To solve the above technical problem, the utility model provides a diverter with a preset screw, which includes a horizontally arranged rectangular manganese copper plate. Horizontally arranged rectangular copper plates are symmetrically welded on both the left and right sides of the manganese copper plate. The two copper plates have the same size and are flush with the front and back sides of the manganese copper plate. Threaded holes vertically penetrating the copper plates are symmetrically provided on both the left and right sides of the two copper plates near the manganese copper plate in the left - right direction. Through holes vertically penetrating the copper plates are symmetrically provided on both the left and right sides of the two copper plates far away from the manganese copper plate in the left - right direction. It is characterized in that: a riveting bolt is press - riveted and fixed in each of the through holes. The riveting head of the riveting bolt is matched with the through hole. The lower side of the riveting head of the riveting bolt is flush with the lower side of the copper plate. The screw of the riveting bolt extends vertically upward and exceeds the through hole. A circular indentation surrounding the through hole is provided at the position corresponding to the connection of each through hole and the screw on the upper side of the copper plate.

[0005] For the sake of simplicity in explaining the problem, hereinafter, a diverter with a preset screw described in the utility model is simply referred to as this diverter.

[0006] The method for presetting screws of this diverter includes the following steps:

[0007] (1) Prepare a riveting machine, a punch of the riveting machine is provided with a clearance hole matching the screw of the riveting bolt, the bottom die of the riveting machine is a flat bottom die, and an annular boss arranged around the clearance hole is provided at the position of the punch of the riveting machine corresponding to the clearance hole;

[0008] (2) Prepare the splitter body that has been processed and has a screw that is ready for use;

[0009] (3) The screw of the rivet bolt to be riveted is passed through the corresponding through hole of the diverter copper plate from bottom to top, so that the rivet head of the rivet bolt is positioned and pre-assembled at the lower side of the corresponding through hole of the copper plate;

[0010] (4) The diverter body and the preassembled rivet bolts are transferred to the bottom die of the rivet machine. After adjusting to the target position, the rivet machine is started. The punch of the rivet machine is pressed down. The rivet head of the rivet nut cooperates with the through hole under the extrusion force and is flush with the bottom of the copper plate after riveting. At the same time, the annular boss on the punch of the rivet machine forms an annular recess at the connection between the through hole and the screw on the upper side of the copper plate.

[0011] The method has simple steps and is easy to process. A boss structure is set on the riveting machine to form an annular recess at the through hole of the copper plate, so that the copper at this location enters the thread after deformation, thereby preventing the riveting bolt and the copper plate from rotating relative to each other.

[0012] Advantages of this shunt: This shunt pre-sets a screw at the current wiring hole of the traditional shunt through a riveting process, solving the problem that the bolt head cannot be fixed due to limited space when using the traditional shunt. In addition, the shunt is more convenient to use because it comes with a screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present shunt.

[0014] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle.

[0015] Figure 3 This is another structural schematic diagram of the present shunt. DETAILED DESCRIPTION

[0016] See also Figures 1-3, a flow divider with a preset screw, comprising a horizontally arranged rectangular manganese copper plate 1, with horizontally arranged rectangular copper plates 2 symmetrically welded on the left and right sides of the manganese copper plate 1, the two copper plates 2 have the same size and are flush with the front and rear sides of the manganese copper plate 1, the two copper plates 2 are symmetrically provided with threaded holes 3 that penetrate the copper plates 2 in the vertical direction near the manganese copper plate 1 in the left and right directions, and the two copper plates 2 are symmetrically provided with through holes 4 that penetrate the copper plates 2 in the vertical direction away from the manganese copper plate 1 in the left and right directions, characterized in that: a rivet bolt 5 is fixed with pressure rivet in each through hole 4, the rivet head 52 of the rivet bolt 5 cooperates with the through hole 4, the lower side of the rivet head 52 of the rivet bolt 5 is flush with the lower side of the copper plate 2, the screw 51 of the rivet bolt 5 extends vertically upward and exceeds the through hole 4, and an annular recess 21 arranged around the through hole 4 is provided at the upper side of the copper plate 2 corresponding to the connection between each through hole 4 and the screw 51.

[0017] Advantages of this shunt: This shunt pre-sets a screw at the current wiring hole of the traditional shunt through a riveting process, solving the problem that the bolt head cannot be fixed due to limited space when using the traditional shunt. In addition, the shunt is more convenient to use because it comes with a screw.

[0018] A method for presetting a screw of a flow divider for presetting a screw, comprising the following steps:

[0019] (1) Prepare a riveting machine, a clearance hole matching the screw rod 51 of the riveting bolt 5 is set on the riveting machine punch, the bottom die of the riveting machine is a flat bottom die, and an annular boss arranged around the clearance hole is set at the position of the riveting machine punch corresponding to the clearance hole;

[0020] (2) Prepare the splitter body that has been processed and has a screw that is ready for use;

[0021] (3) The screw rod 51 of the rivet bolt 5 to be riveted is passed from bottom to top through the corresponding through hole 4 of the diverter copper plate 2, so that the rivet head 52 of the rivet bolt 5 is pre-positioned at the lower side of the through hole 4 of the corresponding copper plate 2;

[0022] (4) The diverter body and the preassembled rivet bolt 5 are transferred to the bottom die of the rivet machine. After adjusting to the target position, the rivet machine is started. The punch of the rivet machine is pressed down. The rivet head 52 of the rivet nut cooperates with the through hole 4 under the action of the extrusion force and is flush with the bottom of the copper plate 2 after riveting. At the same time, the annular boss on the punch of the rivet machine forms an annular recess 21 at the connection between the through hole 4 and the screw 51 on the upper side of the copper plate 2.

[0023] Advantages of this method: This method has simple steps and is easy to process. By setting a boss structure on the riveting machine, an annular recess 21 is formed at the through hole 4 of the copper plate 2, so that the copper at this location enters the thread after deformation, preventing the riveting bolt 5 and the copper plate 2 from rotating relative to each other.

Claims

1. A flow divider with a preset screw, comprising a horizontally arranged rectangular manganese copper plate, with horizontally arranged rectangular copper plates symmetrically welded on both sides of the manganese copper plate, the two copper plates have the same size and are flush with the front and rear sides of the manganese copper plate, the two copper plates are symmetrically provided with threaded holes penetrating the copper plates in the vertical direction near the manganese copper plates in the left and right directions, and the two copper plates are symmetrically provided with through holes penetrating the copper plates in the vertical direction away from the manganese copper plates in the left and right directions, characterized in that: A rivet bolt is fixed by riveting in each of the through holes, the rivet head of the rivet bolt cooperates with the through hole, the lower side of the rivet head of the rivet bolt is flush with the lower side of the copper plate, the screw rod of the rivet bolt extends vertically upward and exceeds the through hole, and an annular recess arranged around the through hole is provided at the upper side of the copper plate corresponding to the connection between each through hole and the screw rod.

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