Interface connector for input and output ends of multi-interface ECU controller

Abstract

The utility model relates to the technical field of electric connectors, in particular to an interface connector for input and output ends of a multi-interface ECU (Electronic Control Unit) controller, which comprises a main shell, a rear cover plate and a plurality of terminal mounting cylinders, and corresponding terminal groups are inserted in the terminal mounting cylinders; at least one positioning column is arranged at the bottom of the rear cover plate; and a positioning locking piece is arranged at the bottom of the main shell. According to the utility model, the rear cover plate is arranged at the connecting end of the connector and the PCB, the rear cover plate is connected with the main shell of the connector through the buckle, the positioning column on the rear cover plate and the positioning locking piece on the main shell are connected with the PCB in a matching manner and are locked and fixed with the PCB, and the connector shell, the terminal group, the rear cover plate and the PCB are connected and fixed together in advance before furnace-passing welding; fixation is firm, and connection stability is kept; and moreover, the positioning locking piece and the positioning column are distributed at different positions of the edge line of the PCB, so that the PCB is kept flat, and the boiler is prevented from tilting in the welding process.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to interface connectors for the input and output terminals of multi-interface ECU controllers. Background Technology

[0002] An electrical connector includes an insulating housing and conductive terminals mounted on the insulating housing. One end of the insulating housing is fixed and accommodates the conductive terminals for mating with other connectors (joints), and the other end extends out of the insulating housing for soldering and fixing to the equipment.

[0003] In the existing technology, the terminals extend out of the housing and are assembled with the PCB board, which is prone to improper assembly. Furthermore, during the reflow soldering process after assembly, there is a risk that the sides of the PCB board may lift up, affecting the soldering quality and leading to the risk of product scrap.

[0004] To address the problems in the existing technology, this utility model provides an interface connector for the input and output terminals of a multi-interface ECU controller. Utility Model Content

[0005] The purpose of this utility model is to provide an interface connector for the input and output terminals of a multi-interface ECU controller, so as to solve the technical problems in the prior art, such as inaccurate positioning when the connector is assembled with the PCB, and the risk of warping during the on-board processing of the PCB.

[0006] The technical solution of this utility model is: an interface connector for the input and output terminals of a multi-interface ECU controller, including a main housing, a rear cover plate and several terminal mounting cylinders, wherein corresponding terminal groups are inserted into the terminal mounting cylinders;

[0007] At least one positioning post is provided at the bottom of the rear cover plate for pre-positioning connection with the PCB board, and the bottom height of the positioning post is lower than the lowest point of the terminal in the terminal group.

[0008] At least two sets of positioning and locking components are provided at the bottom of the main housing. The positioning and locking components are matched and connected with the PCB board and are locked at the connection position after connection.

[0009] Preferably, the positioning and locking component adopts a petal-shaped split structure, with several petal-shaped half-structures being identical; one half-structure includes a fixed end and a lock head connected to the fixed end via a connecting post;

[0010] The fixed end is fixedly connected to the main housing, and the connecting column and the lock head are free ends; the lock head is set in a conical shape, and the maximum diameter of the bottom of the cone is not less than the radial dimension of the connecting column. The lock heads on both sides open freely outward, forming an overall figure-eight shape.

[0011] Preferably, the end section of the main housing is trapezoidal in shape, with the two inclined panels on both sides tilting downwards; the positioning and locking components are located inside the two inclined panels, and the top plane of the positioning and locking components is flush with the rear cover plate.

[0012] Preferably, a partition plate is provided at the bottom of the main housing. The partition plate is vertically arranged and extends downward from the horizontally arranged rear cover plate, stopping at the end of the mating PCB board.

[0013] Preferably, the rear cover plate is connected to the main housing by a pair of interlocking snap fasteners.

[0014] Preferably, each terminal in the terminal group is provided with an interference fit for interference fit with the mounting hole inside the main housing, wherein the interference fit is provided with a textured section with uneven surface.

[0015] Preferably, a sealing cylinder is provided on the outer wall of the terminal mounting cylinder.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This invention features a rear cover plate at the connector-PCB connection end. The rear cover plate is connected to the main housing of the connector via a snap-fit ​​mechanism. Positioning pins on the rear cover plate and positioning locking components on the main housing cooperate to connect to and lock the PCB. Before reflow soldering, the connector housing, terminal group, rear cover plate, and PCB are pre-connected and fixed together, ensuring a secure and stable connection. Furthermore, the positioning locking components and positioning pins are distributed at different positions along the edge of the PCB, keeping the PCB flat and preventing it from warping during reflow soldering. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 A three-dimensional schematic diagram of the interface connector provided by this utility model;

[0020] Figure 2 An exploded view of the interface connector provided by this utility model;

[0021] Figure 3 A schematic diagram of the port plan of the interface connector provided by this utility model;

[0022] Figure 4 This is a structural schematic diagram of the positioning and locking component provided by this utility model;

[0023] The components are: 1. Main housing; 2. Terminal mounting cylinder; 3. Rear cover plate; 4. Terminal group; 5. Positioning and locking component; 6. Sealing cylinder; 7. Positioning post; 8. Buckle; 9. Interference fit; 10. Spacer plate; 51. Fixed end; 52. Connecting post; 53. Lock head. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments:

[0025] like Figure 1 As shown, an interface connector for the input / output terminals of a multi-interface ECU controller is provided. One end of the connector is assembled and connected to a PCB board. The connector includes a main housing 1, a rear cover plate 3, and several terminal mounting cylinders 2. Corresponding terminal groups 4 are inserted into the terminal mounting cylinders 2.

[0026] Terminal group 4 is arranged and inserted on the rear cover plate 3. The other end of terminal group 4 passes through the main housing 1 and extends into the terminal mounting cylinder 2 on the other side for electrical connection with mating terminals. The rear cover plate 3 makes the connection between the connector and the PCB board more stable.

[0027] At least two sets of positioning locking members 5 are provided at the bottom of the main housing 1. The positioning locking members 5 are mated and connected with the PCB board and are locked at the connection position after connection. In addition, at least one positioning post 7 is provided at the bottom of the rear cover plate 3 for pre-positioning connection with the PCB board. The bottom height of the positioning post 7 is lower than the lowest point of the terminal in the terminal group.

[0028] As attached Figure 3 As shown, the middle positioning post 7 first contacts the PCB board for positioning, and the positioning locking parts 5 on both sides mate and connect with the assembly holes on the PCB board. In this way, the PCB board is kept flat and prevented from warping during reflow soldering.

[0029] Each terminal in the terminal group 4 is provided with an interference portion 9 for interference fit with the mounting hole inside the main housing 1. The interference portion 9 is provided with a textured section with uneven surface, so that the terminal is locked tightly to the outer injection-molded main housing and does not wobble.

[0030] As attached Figure 3 As shown, the overall cross-sectional shape of the end of the main housing 1 is trapezoidal, with the two inclined panels on both sides tilting downwards to ensure uniform distribution of fluid materials during the injection molding process. For example, during the glue-filling process of installing the connector and ECU controller housing, the inclined slope structure helps the glue to flow along the slope, achieving uniform glue thickness on the sealing surface and realizing good sealing performance.

[0031] The positioning and locking element 5 is located inside the inclined panels on both sides, and the top plane of the positioning and locking element 5 is flush with the rear cover plate 3. (See attached diagram) Figure 2 Combined with the appendix Figure 3As shown, the rear cover plate 3 is connected to the main housing 1 by a pair of interlocking snap fasteners 8. The main housing 1, terminal group 4, rear cover plate 3 and PCB board are fixed together in advance before reflow soldering by the positioning locking member 5, positioning post 7 and snap fasteners 8.

[0032] A partition plate 10 is provided at the bottom of the main housing 1. The partition plate 10 is vertically arranged and extends downward from the horizontally arranged rear cover plate 3. The rear cover plate 3 is parallel to the PCB board, and the partition plate 10 stops at the end of the mating PCB board. The positioning locking member 5 is positioned and locked at both ends, and the end is formed by the partition plate 10 to form a vertical side blocking plane to prevent the PCB from tilting.

[0033] Specifically, refer to the appendix Figure 4 As shown, the positioning and locking component 5 adopts a petal-shaped split structure, with several petal-shaped half-structures forming an identical structure; refer to the attached diagram. Figure 3 The example provides a schematic diagram of an embodiment in which the positioning locking member 5 is configured as a two-half structure, one half of which includes a fixed end 51 and a lock head 53 connected to the fixed end 51 by a connecting post 52.

[0034] The fixed end 51 is fixedly connected to the main housing 1, while the connecting post 52 and the lock head 53 are free ends. The lock head 53 is set in a conical shape, and the maximum diameter of the bottom of the cone is not less than the radial dimension of the connecting post 52. The lock heads 53 on both sides open freely outward, forming an overall figure-eight shape.

[0035] When mating with the PCB board, the free ends of the two halves of the structure come together in the middle, pass through the mounting hole of the PCB board, and are released freely, opening into an "eight" shape, and abutting against the mounting hole. Furthermore, the diameter of the bottom locking head 53 is larger than the diameter of the upper connecting post 52, and it penetrates and locks into the mounting hole of the PCB board.

[0036] In addition, a sealing cylinder 6 is provided on the outer wall of the terminal mounting cylinder 2. Unlike openings inside the terminal mounting cylinder 2, the sealing cylinder 6 can release pressure to balance the internal and external pressures when the connectors are mated, making it easier to plug and unplug the connectors and requiring less effort. Furthermore, it can maintain a seal when mated with a mating connector, such as a wire harness connector, to meet the connector sealing requirements.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. An interface connector for the input / output terminals of a multi-interface ECU controller, characterized in that, It includes a main housing, a rear cover plate, and several terminal mounting cylinders, wherein corresponding terminal groups are inserted into the terminal mounting cylinders; At least one positioning post is provided at the bottom of the rear cover plate for pre-positioning connection with the PCB board, and the bottom height of the positioning post is lower than the lowest point of the terminal in the terminal group. At least two sets of positioning and locking components are provided at the bottom of the main housing. The positioning and locking components are matched and connected with the PCB board and are locked at the connection position after connection.

2. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 1, characterized in that, The positioning and locking component adopts a petal-shaped split structure, with several petal-shaped half-structures being identical; one half-structure includes a fixed end and a lock head connected to the fixed end via a connecting post. The fixed end is fixedly connected to the main housing, and the connecting column and the lock head are free ends; the lock head is set in a conical shape, and the maximum diameter of the bottom of the cone is not less than the radial dimension of the connecting column. The lock heads on both sides open freely outward, forming an overall figure-eight shape.

3. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 1, characterized in that, The main housing end section is generally trapezoidal, with the two inclined panels on both sides tilting downwards; the positioning and locking components are located inside the two inclined panels, and the top plane of the positioning and locking components is flush with the rear cover plate.

4. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 3, characterized in that, A partition plate is provided at the bottom of the main housing. The partition plate is vertically arranged and extends downward from the horizontally arranged rear cover plate, stopping at the end of the mating PCB board.

5. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 1, characterized in that, The rear cover plate is connected to the main housing by a pair of interlocking snap fasteners.

6. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 1, characterized in that, Each terminal in the terminal group is provided with an interference fit for interference fit with the mounting hole inside the main housing; wherein, the interference fit is provided with a textured section with undulating edges.

7. The interface connector for the input / output terminals of a multi-interface ECU controller according to claim 1, characterized in that, A sealing cylinder is provided on the outer wall of the terminal mounting cylinder.

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