Chip terminal for controller

Abstract

The controller comprises a PCB, a plurality of copper bars and a radiator, the patch terminal comprises a conductive support, a nut gasket and a pair of reinforcing assemblies, the nut gasket and the reinforcing assemblies are installed on the inner side of the conductive support, the conductive support comprises a top plate and a pair of side plates, the tops of the side plates are connected with the top plate, the top plate is connected with the copper bars, and the top plate is connected with the copper bars. The bottom of each side plate is provided with a connecting pin extending outwards, each connecting pin comprises a first pin and a second pin which are oppositely arranged front and back, the opposite inner walls of the first pin and the second pin are connected through an arc-shaped concave part, and the inner wall of the first pin, the arc-shaped concave part and the inner wall of the second pin form a U-shaped groove with an opening facing the outer side. The pair of reinforcing assemblies are arranged in the U-shaped grooves respectively so as to fix the connecting pins, the PCB and the radiator at the same time. According to the SMD terminal, the connection with the PCB is enhanced, the stress generated by the copper bar can be borne, the stability of the controller is improved, and meanwhile, the over-current capability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wiring terminals, in particular to a patch terminal for a controller. Background Art

[0002] The controller generally includes a PCB board with a control circuit arranged inside and a copper busbar for conducting current. The surface of the PCB board is provided with a soldering pad connected to the control circuit, and the electrical conduction between the control circuit and the copper busbar is achieved by arranging a patch terminal between the soldering pad and the copper busbar. At present, the method of soldering the pins of the patch terminal to the soldering pad is generally adopted to achieve a fixed connection and electrical conduction between the copper busbar and the PCB board. If the operation is improper during production, the patch terminal will fall off the PCB board due to cold soldering or desoldering. Or, when a large current is conducted, the copper busbar will often bend due to heat due to excessive current. The stress generated by the bending of the copper busbar will be applied to the patch terminal, causing the patch terminal to tear the copper skin of the soldering pad under the stress of the copper busbar, resulting in product failure. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a patch terminal for a controller which is firmly connected to a PCB board, safe from over-voltage and low in cost.

[0004] To achieve the above object, the utility model adopts the following technical solution: a patch terminal for a controller, the controller includes a PCB board, a plurality of copper bars installed on the front of the PCB board and a radiator installed on the back of the PCB board, the patch terminal is fixedly connected to the copper bars, the PCB board and the radiator, and the patch terminal includes:

[0005] A conductive bracket, comprising a top plate and a pair of side plates arranged opposite to each other, the tops of the pair of side plates are respectively connected to the left and right ends of the top plate, the bottom of each side plate is provided with a connecting pin extending outward, each connecting pin comprises a first pin and a second pin arranged opposite to each other front and back, the opposite inner walls of the first pin and the second pin are connected through an arc-shaped recess, the inner wall of the first pin, the arc-shaped recess and the inner wall of the second pin form a U-shaped groove with an opening facing outward, and a through hole is provided in the middle of the top plate for the connection screw connected to the copper busbar to pass through;

[0006] A nut washer is installed on the inner side of the conductive bracket and is arranged in contact with the bottom surface of the top plate. A threaded through hole corresponding to the through hole is opened in the middle of the nut washer, and the threaded through hole is matched with the thread of the connecting screw; and

[0007] A pair of reinforcing components are respectively placed in one of the U-shaped grooves to simultaneously connect the connecting pins, the PCB board and the heat sink.

[0008] In the above technical solution, it is further preferred that the conductive bracket is an integrally formed part.

[0009] In the above technical solution, it is further preferred that the conductive bracket is a copper plate, and the thickness of the copper plate is 0.5mm-1mm.

[0010] In the above technical solution, it is further preferred that the two end portions of the nut gasket have outwardly protruding clamping portions, and each of the side panels is provided with a clamping groove, and each of the clamping portions can be embedded in the corresponding clamping groove of the side panel.

[0011] In the above technical solution, it is further preferred that the nut gasket is a steel plate, and the thickness of the nut gasket is 1mm-2mm.

[0012] In the above technical solution, it is further preferred that each of the reinforcement components includes an insulating gasket and a reinforcement screw, the insulating gasket is provided with a transition hole for the reinforcement screw to pass through, each of the insulating gaskets includes a first part and a second part connected to the bottom surface of the first part, and in the front-to-back direction, there is a size between the inner wall of the first pin and the inner wall of the second pin, the diameter of the first part is larger than the size, and the diameter of the second part is smaller than the size.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The patch terminal of the present application strengthens the connection with the PCB board, can withstand the stress generated by the copper bus, improve the stability of the controller, and ensure the current passing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a three-dimensional structure of a patch terminal provided in an embodiment of the present application;

[0016] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure in which the patch terminals are installed on the controller;

[0017] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in FIG.

[0018] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the conductive support;

[0019] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the nut gasket in FIG.

[0020] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the insulating gasket.

[0021] Among them: 100, controller; 10, copper busbar; 20, PCB board; 30, heat sink; 40, patch terminal; 1, conductive bracket; 11, top plate; 110, through hole; 12, side plate; 120, snap-in groove; 13, connecting foot; 131, first pin; 132, second pin; 133, arc-shaped recess; 134, U-shaped groove; 2, nut gasket; 21, threaded through hole; 22, snap-in part; 3, reinforcement component; 31, insulating gasket; 311, first part; 312, second part; 313, transition hole; 32, reinforcement screw; 4, connecting screw. DETAILED DESCRIPTION

[0022] To describe the technical content, structural features, achieved purposes and effects of the utility model in detail, the technical solutions in the utility model embodiments will be described below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the utility model embodiments, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0023] The terms “upper”, “lower”, “left” and “right” in this application refer to the attached Figure 1 Up, down, left and right as shown.

[0024] The embodiment of the utility model provides a patch terminal for a controller, such as Figure 2 , 3 As shown, a general controller 100 includes a plurality of copper bars 10 for conducting current, a PCB board 20 on which a control circuit is arranged, and a heat sink 30 for dissipating heat for the PCB board 20. The copper bar 10 is fixedly mounted on the PCB board 20 through a patch terminal 40. At the same time, the patch terminal 40 fixes the PCB board 20 on the heat sink 30. The patch terminal 40 can withstand the stress caused by the deformation of the copper bar 10 to avoid falling off the PCB board, and stably connects the copper bar 10, the PCB board 20 and the heat sink 30 arranged in sequence from top to bottom, thereby increasing the reliability of the controller 100 without affecting the passage of current.

[0025] like Figure 1 , 4 As shown, the patch terminal 40 includes a conductive bracket 1 in the shape of a "J", a nut gasket 2 installed on the conductive bracket 1, a pair of reinforcement components 3 and a connecting screw 4. The conductive bracket 1 includes a top plate 11 and a pair of side plates 12. A through hole 110 for the connecting screw 4 to pass through is opened in the middle of the top plate 11; the pair of side plates 12 are arranged opposite to each other on the left and right, the top of one side plate 12 is connected to the left end of the top plate 11, and the top of the other side plate 12 is connected to the right end of the top plate 11; the bottom of each side plate 12 is provided with a connecting foot 13 extending outward, and the connecting foot 13 is parallel to the top plate 11.

[0026] Each connecting pin 13 includes a first pin 131 and a second pin 132 arranged opposite to each other in front and back. The opposite inner walls of the first pin 131 and the second pin 132 are connected by an arc-shaped recess 133. The inner wall of the first pin 131, the arc-shaped recess 133 and the inner wall of the second pin 132 form a U-shaped groove 134 opening toward the outside.

[0027] The copper busbar 10 is fixedly connected to the top plate 11 by connecting screws 4. After a pair of connecting pins 13 of the conductive bracket 1 are welded to the PCB board 20, they are pressed onto the PCB board 20 by a pair of reinforcing components 3 to prevent the connecting pins 13 from falling off from the PCB board 20 due to desoldering or cold soldering, or the pads of the PCB board 20 from being torn under the stress of the copper busbar 10.

[0028] In the embodiment of the present application, the conductive bracket 1 is an integrally formed part formed by stamping a metal conductive plate; preferably, the conductive bracket 1 is a copper plate with a thickness of 0.5 mm to 1 mm and a tin-plated surface.

[0029] like Figure 1 , 4 As shown in Figures 5 and 6, the nut gasket 2 is installed on the inner side of the conductive bracket 1 and is arranged in contact with the bottom surface of the top plate 11. A threaded through hole 21 corresponding to the through hole 110 is provided in the middle of the nut gasket 2. The threaded through hole 21 is threadedly matched with the connecting screw 4. The nut gasket 2 acts as a nut to be fixed on the conductive bracket 1 when the connecting screw 4 is tightened. The left and right end portions of the nut gasket 2 respectively have a snap-on portion 22 protruding outward, and a pair of side plates 12 are provided with a snap-on groove 120 that matches the snap-on portion 22. Each snap-on portion 22 can be embedded in the snap-on groove 120 of the corresponding side plate 12 to achieve a fixed connection between the nut gasket 2 and the conductive bracket 1. In the embodiment of the present application, the nut gasket 2 is a steel plate with a tin-plated surface and a thickness of 1mm-2mm.

[0030] like Figure 1 , 6As shown, a pair of reinforcement components 3 are respectively placed in a U-shaped groove 134 to fasten the connection between the connecting foot 13, the PCB board 20 and the heat sink 30. Each reinforcement component 3 includes an insulating gasket 31 and a reinforcement screw 32 matched with the insulating gasket 31. The insulating gasket 31 includes a first portion 311 and a second portion 312 connected to the lower side of the first portion 311, and also includes a transition hole 313 for the reinforcement screw 32 to pass through.

[0031] like Figure 1 , 4 As shown in , 5, in the front-to-back direction, there is a dimension D between the inner wall of the first pin 131 and the inner wall of the second pin 132, the diameter of the first part 311 is larger than the dimension D, and the diameter of the second part 312 is smaller than the dimension D; a through hole (not shown in the figure) for the second part 312 to pass through is provided on the PCB board 20, the diameter of the second part 312 is smaller than or equal to the diameter of the through hole, and the diameter of the first part 311 is larger than the diameter of the through hole; a threaded hole threadedly matched with the reinforcing screw 32 is provided on the heat sink 30. The second part 312 passes through the U-shaped groove 134 and then is embedded in the through hole of the PCB board 20. Each reinforcing screw 32 passes through the insulating gasket 31 and then is threadedly connected to the heat sink 30 on the back of the PCB board 20. When the reinforcing screw 32 is tightened, the connecting foot 13 is pressed against the front of the PCB board 20 by the first part 311, and the PCB board 20 is pressed against the heat sink 30 by the connecting foot 13, so as to achieve a fixed connection with the heat sink 30. The first part 311 blocks between the reinforcing screw 32 and the connecting foot 13, and cuts off the current conduction between the reinforcing screw 32 and the conductive bracket 1. The second part 312 blocks between the PCB board 20 and the reinforcing screw 32, and cuts off the current conduction between the reinforcing screw 32 and the PCB board 20. A pair of reinforcing components 3 realizes the reinforcement of the patch terminal 40 connected to the PCB board 20, and the insulating gasket 31 is used to avoid affecting the power supply of the patch terminal 40. The patch terminal 40 can strengthen the connection between the conductive bracket 1 and the PCB board 20, and withstand the stress of the copper bus 10, further improving the stability of the assembled product.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and the scope of protection required by the utility model is defined by the attached claims, description and their equivalents.

Claims

1. A patch terminal for a controller, the controller comprising a PCB board, a plurality of copper bars mounted on the front of the PCB board, and a radiator mounted on the back of the PCB board, the patch terminal is fixedly connected to the copper bars, the PCB board and the radiator, characterized in that: The patch terminal comprises: A conductive bracket, comprising a top plate and a pair of side plates arranged opposite to each other, the tops of the pair of side plates are respectively connected to the left and right ends of the top plate, the bottom of each side plate is provided with a connecting pin extending outward, each connecting pin comprises a first pin and a second pin arranged opposite to each other front and back, the opposite inner walls of the first pin and the second pin are connected through an arc-shaped recess, the inner wall of the first pin, the arc-shaped recess and the inner wall of the second pin form a U-shaped groove with an opening facing outward, and a through hole is provided in the middle of the top plate for the connection screw connected to the copper busbar to pass through; A nut washer is installed on the inner side of the conductive bracket and is arranged in contact with the bottom surface of the top plate. A threaded through hole corresponding to the through hole is opened in the middle of the nut washer, and the threaded through hole is matched with the thread of the connecting screw; and A pair of reinforcing components are respectively placed in one of the U-shaped grooves to simultaneously connect the connecting pins, the PCB board and the radiator.

2. The patch terminal according to claim 1, characterized in that: The conductive bracket is an integrally formed part.

3. The patch terminal according to claim 2, characterized in that: The conductive support is a copper plate, and the thickness of the copper plate is 0.5mm-1mm.

4. The patch terminal according to claim 1, characterized in that: The two ends of the nut gasket are provided with outwardly protruding clamping parts, and each of the side plates is provided with a clamping groove, and each of the clamping parts can be embedded in the corresponding clamping groove of the side plate.

5. The patch terminal according to claim 4, characterized in that: The nut gasket is a steel plate, and the thickness of the nut gasket is 1mm-2mm.

6. The patch terminal according to claim 1, characterized in that: Each of the reinforcement components includes an insulating gasket and a reinforcement screw. The insulating gasket is provided with a transition hole for the reinforcement screw to pass through. Each of the insulating gaskets includes a first part and a second part connected to the bottom surface of the first part. In the front-to-back direction, there is a size between the inner wall of the first pin and the inner wall of the second pin. The diameter of the first part is larger than the size, and the diameter of the second part is smaller than the size.

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