Binding post for motor controller

Abstract

The utility model discloses a binding post for a motor controller, which comprises an L-shaped body formed by a connecting column and an extension plate, the extension plate is arranged at one end of the connecting column and extends outwards, two ends of the connecting column are respectively provided with a connecting screw hole, and the extension plate is provided with a through hole arranged along the columnar direction of the connecting column. According to the utility model, the binding post is L-shaped, and the L-shaped binding post is arranged between the cylindrical binding post and the T-shaped binding post, so that the risk that a PCB and components thereof are damaged when a top bolt is locked by the cylindrical binding post is avoided; the problem that when a T-shaped binding post is used, the contact area between the binding post and the PCB is too large, and the layout of a driving circuit is not facilitated can be solved; the problem that the cost of the overcurrent copper sheet of the PCB needs to be increased due to the use of a T-shaped binding post can be avoided; therefore, the binding post of the utility model can effectively combine the advantages of a cylindrical binding post and a T-shaped binding post.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile motor controllers, in particular to a terminal for a motor controller. Background Art

[0002] The battery power input and three-phase motor drive output of the electric tricycle motor controller on the market use two types of terminal blocks: one is a cylindrical terminal block and the other is a T-type terminal block.

[0003] The structure of the cylindrical terminal is as described in the patent with patent application number CN202222787479.0 and the name is a motor controller terminal structure. The method usually adopted is to tap the corresponding bolt thread holes at both ends of its cylinder (the diameter is selected according to the size of the overcurrent), and then use a copper bolt to lock one end of the terminal upright on the corresponding hole position of the PCB board, and use solder to solder the copper bolt to the copper sheet at the bottom of the PCB board. When the other end is connected to the outside, the connected copper terminal (or gourd piece) can be locked with a bolt. The advantage of the cylindrical terminal is that the product processing and assembly process is simple and the cost is low; the disadvantage is that when the terminal is connected and locked with the outside, the torque it is subjected to may cause deformation of the PCB board and damage to the corresponding components. Therefore, there is a certain risk in using cylindrical terminals.

[0004] As the name implies, the T-type terminal is in the shape of a "T". Such as the structure recorded in the patent with patent application number CN202220155311.5 and name "terminal". The method usually adopted by this structure is to open corresponding bolt through holes on both sides. When installing the PCB board, align the holes on both sides with the holes on the PCB board and install it in an inverted shape to the corresponding position, and then use bolts with T-shaped insulating pads to lock the holes of the T-type terminal and the holes of the PCB board into the heat dissipation base. The advantage of the T-type terminal is that the torque applied when the terminal is locked with the outside will not damage the PCB board and related components; the disadvantage of the T-type terminal is that the area occupied by the inverted installation on the PCB board is large, which not only affects the circuit layout, but also increases the corresponding cost.

[0005] From the above, it can be seen that the cylindrical terminal in the prior art still has the problem of low deformation resistance or too large installation area of ​​T-shaped terminal during use. Therefore, it is necessary to provide a terminal structure that can combine the advantages of the above two types of terminal. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a terminal for a motor controller, which solves the shortcomings of the cylindrical terminal or T-shaped terminal in the prior art during use and can effectively combine the advantages of the two terminals.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a terminal for a motor controller, comprising an L-shaped body composed of a connecting column and an extension plate, wherein the extension plate is arranged at one end of the connecting column and extends outward, connecting screw holes are respectively provided at both ends of the connecting column, and a through hole is provided on the extension plate along the columnar direction of the connecting column.

[0008] When the terminal provided by the utility model is installed:

[0009] The L-shaped body is set vertically, and one end of the extension plate is set as the bottom of the connection column. During installation, align the hole position of the connection screw hole starting from the bottom of the connection column with the hole position opened on the PCB board, and use the corresponding type of copper screw to lock the connection column on the PCB board from the bottom of the PCB board upward, and solder the copper bolt to the copper sheet on the PCB board with solder; then, use a T-shaped insulating pad bolt to penetrate through the through hole on the extension plate and the hole position of the PCB board, and lock the extension plate to the heat dissipation base to complete the fixed connection between the terminal and the PCB board. The connection screw set at the top of the connection column can be used to fix the connection column and the controller housing, realize the connection of the housing, and complete the assembly operation.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The terminal arranged in the utility model is L-shaped, and the L-shaped terminal is between the cylindrical and T-shaped terminals, which not only avoids the risk of damage to the PCB and its components when the cylindrical terminal is used to lock the top bolts; it can also avoid the problem that when using the T-shaped terminal, the contact area between the terminal and the PCB board is too large, which is not conducive to the layout of the driving circuit; and it can also avoid the problem that the cost of the overcurrent copper sheet of the PCB board needs to be increased due to the use of the T-shaped terminal; so that the terminal of the utility model can effectively combine the advantages of the cylindrical terminal and the T-shaped terminal.

[0012] Furthermore, the connecting column is a cylindrical structure, and the extension plate is an elliptical plate structure extending outward from one end of the cylinder.

[0013] Furthermore, an annular boss is provided outside the connecting column and protrudes outward along its circumference, and the boss is provided close to the other end of the connecting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the utility model;

[0015] Figure 2 for Figure 1 Section view along line AA.

[0016] In the figure: main body 1, connecting column 11, extension plate 12, through hole 13, boss 14, connecting screw hole 15. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] like Figure 1 , 2 As shown, a terminal for a motor controller includes an L-shaped body 1 composed of a connecting column 11 and an extension plate 12, wherein the extension plate 12 is arranged at one end of the connecting column 11 and extends outward, and connecting screw holes 15 are respectively provided at both ends of the connecting column 11, and a through hole 13 is provided on the extension plate 12 along the columnar direction of the connecting column 11. The connecting column 11 can adopt a cylindrical structure in the prior art, or a square columnar structure, a hexagonal columnar structure, and a columnar structure of other shapes. The purpose is to ensure that the PCB board and the housing can be smoothly connected when there is a certain distance. To this end, it is only necessary to set threaded holes for use with bolts at both ends of the connecting column 11, and the structure of the connecting column 11 can be designed according to design requirements. In the utility model, in order to make the stability of the connecting column 11 better, the connecting column 11 of the utility model is a cylindrical structure. In order to improve the shortcomings of the existing cylindrical terminal, the utility model is further provided with an extension plate 12 extending outward at one end of the connecting column 11. The purpose of the extension plate 12 is to disperse the stress points when the connecting column 11 is connected to the PCB board, thereby improving the anti-deformation ability of the connection point between the PCB board and the terminal. To this end, it is only necessary to ensure that the extension plate 12 extends outward along one end of the connecting column 11 and forms an L-shaped body 1 with the connecting column 11. Therefore, the structure of the extension plate 12 can also adopt a square plate, a circular plate, a rectangular plate, etc. according to design requirements. In the utility model, in order to make the use effect of the extension plate 12 better and the anti-deformation ability of the extension plate 12 with the through hole 13 is better, the extension plate 12 of the utility model is an elliptical plate structure extending outward along one end of the cylinder.

[0019] During installation, one end of the connecting post 11 is fixed to the PCB board, and the other end needs to be fixed to the housing of the controller (the installation position of the connecting post in the controller can refer to the installation position of the connecting post in the patent application number CN202220155311.5). In order to achieve a sealed connection between the connecting post 11 and the housing, an O-ring is usually installed on the connecting post 11. However, the cylindrical connecting post 11 is not conducive to the fixation of the sealing ring. The method of opening a recessed groove on the cylinder for clamping the sealing ring in the prior art also has the problem of being unstable. Figure 1 , 2As shown, in order to avoid this problem, the utility model is provided with a circular annular boss 14 protruding outward along the circumference of the connecting column 11, and the boss 14 is arranged near the other end of the connecting column 11. The annular boss 14 can block the sealing ring, and the distance between the boss 14 and the other end of the connecting column 11 can be set according to the thickness of the housing and the thickness of the sealing ring, so that the connecting column 11 and the housing can achieve a sealed connection.

[0020] In this embodiment, based on design requirements, the length H of the connecting column 11 is 38-40 mm, and the diameter G of the connecting column 11 is 10-12 mm; the distance E between the boss 14 and the upper end of the connecting column 11 is 6 mm, the outer diameter F of the boss 14 is 12.5-14.5 mm, and the thickness D of the boss 14 is 4-6 mm; the distance B between the center line of the through hole 13 and the center line of the connecting column 11 is 10-12 mm, and the depth C of the through hole 13 is 2.5-3 mm.

[0021] Based on the above structure, the installation steps of the terminal, PCB board and shell are as follows:

[0022] The L-shaped body 1 is set vertically, and one end of the extension plate 12 is set as the bottom of the connecting column 11. During installation, align the hole position of the connecting screw hole 15 starting from the bottom of the connecting column 11 with the hole position opened on the PCB board, and use a copper screw of the corresponding model to lock the connecting column 11 on the PCB board from the bottom of the PCB board upward, and solder the copper bolt to the copper sheet on the PCB board; then, use a T-shaped insulating pad bolt to penetrate through the through hole 13 on the extension plate 12 and the hole position of the PCB board, and lock the extension plate 12 to the heat dissipation base to complete the fixed connection between the terminal and the PCB board. An O-type sealing ring is put on the boss 14 position on the connecting column 11 to form a sealed state with the hole position of the shell for fixed connection, realize the connection of the shell, and complete the assembly operation.

[0023] The terminal arranged in the utility model is L-shaped, and the L-shaped terminal is between the cylindrical and T-shaped terminals, which not only avoids the risk of damage to the PCB and its components when the cylindrical terminal is used to lock the top bolts; it can also avoid the problem that when using the T-shaped terminal, the contact area between the terminal and the PCB board is too large, which is not conducive to the layout of the driving circuit; and it can also avoid the problem that the cost of the overcurrent copper sheet of the PCB board needs to be increased due to the use of the T-shaped terminal; so that the terminal of the utility model can effectively combine the advantages of the cylindrical terminal and the T-shaped terminal.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A terminal for a motor controller, characterized in that: The invention comprises an L-shaped body (1) composed of a connecting column (11) and an extension plate (12), wherein the extension plate (12) is arranged at one end of the connecting column (11) and extends outward, connecting screw holes (15) are respectively arranged at both ends of the connecting column (11), and a through hole (13) is arranged along the columnar direction of the connecting column (11) on the extension plate (12).

2. A terminal for a motor controller according to claim 1, characterized in that: The connecting column (11) is a cylindrical structure, and the extending plate (12) is an elliptical plate structure extending outwards from one end of the cylinder.

3. A terminal for a motor controller according to claim 1 or 2, characterized in that: An annular boss (14) is provided outside the connecting column (11) and is protruded outwardly along its circumference. The boss (14) is arranged close to the other end of the connecting column (11).

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