A straight-through terminal for a PCB electrical box

Abstract

The utility model discloses a kind of through terminals for PCB board electric appliance box, it is related to the technical field of terminal, including terminal body, terminal body is equipped with the terminal fixed part of the interference fit with PCB board pad hole.I.e. The terminal is fixed by the interference fit between the terminal fixed part and the PCB board pad hole on the PCB before welding, the position of the terminal is fixed before welding, to ensure that the terminal is not easy to drop when welding, so as to reduce the occurrence of poor welding caused by the terminal drop, improve the reliability of the welded terminal, and solve the technical problems of the terminal drop and the reliability of the welded terminal.

Description

Technical Field

[0001] This utility model relates to the technical field of terminals, and in particular to a through terminal for electrical boxes on PCB boards. Background Technology

[0002] With the rapid development of automotive electronics technology, the number of circuits and components integrated inside automotive electrical boxes has increased dramatically, placing higher demands on the reliability of soldered terminals.

[0003] While traditional soldered terminals can meet basic electrical connection requirements to a certain extent, they are prone to falling off during soldering, which can lead to poor soldering and reduced reliability. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a through terminal for electrical boxes on PCB boards, which solves the technical problems of terminals easily falling off during soldering and reduced reliability of soldered terminals.

[0005] The technical solution of this utility model is implemented as follows: A through terminal for an electrical box on a PCB board includes a terminal body, on which a terminal fixing portion is provided for interference fit with the pad holes on the PCB board. Specifically, the through terminal of this application includes a female end portion, a male end portion, and a terminal fixing portion. One end of the through terminal is the female end portion, and the other end is the male end portion. The female end portion and the male end portion are connected together through the terminal fixing portion to form an integrated terminal that includes both the female end portion and the male end portion. Before soldering, the terminal of this application is fixed in position by interference fit with the pad holes on the PCB board through the terminal fixing portion, ensuring that the terminal is not easily dislodged during soldering. This reduces the occurrence of poor terminal soldering due to dislodged terminals, improves the reliability of the soldered terminal, and solves the technical problems of easy terminal dislodging and reduced reliability during soldering.

[0006] The through-type terminal of this application is made of a high-elasticity copper alloy material. This material possesses high rigidity and fatigue strength. The through-type terminal has a sheet-like structure, and its production involves a single stamping process, resulting in a simple structure and high production efficiency.

[0007] Preferably, the terminal fixing part includes a limiting stage disposed on the terminal body, which can stop and cooperate with the hole wall of the PCB board pad hole. The bottom of the limiting stage is integrally connected to an elastic arm that can be interference-fitted with the PCB board pad hole. The limiting stage is provided to stop and contact the PCB board, limiting the final position of the through terminal of this application. The elastic arm is provided to stop and cooperate with the hole wall of the PCB board pad hole, ensuring that the through terminal of this application is not easily detached from the PCB board.

[0008] The flexible arm is made of a high-elasticity copper alloy. This high-elasticity copper alloy has high rigidity and fatigue strength, providing the flexible arm with lasting elasticity and improving the reliability of the through-type terminal.

[0009] Preferably, the terminal body is provided with two limiting platforms and two elastic arms, and the two limiting platforms and two elastic arms are symmetrically arranged along the terminal body. That is, two symmetrical elastic arms are provided under the limiting platforms. The arrangement of the two elastic arms helps to ensure that the force is uniform when the terminal body is inserted into the PCB board pad hole, thereby ensuring the reliability of the soldered terminal.

[0010] Preferably, the elastic arm is an arc-shaped structure. The main function of the arc-shaped structure is to enhance elasticity during deformation, ensuring that the terminal is not easily dislodged from the PCB board. The distance from the highest point of the arc-shaped structure to the limiting stage is H, where H is less than the thickness of the PCB board and is an interference fit with the PCB board pad holes. This ensures that the elastic arm remains in a deformed state after the through terminal is assembled in place, thereby providing sufficient holding force for the through terminal.

[0011] Preferably, the terminal body is provided with deformation holes, and two deformation holes are symmetrically arranged along the terminal body and located between two elastic arms. The elastic arms and deformation holes together realize the deformation and clamping function during the insertion process of the through terminal.

[0012] Preferably, the terminal body is provided with a reinforcing rib, which is located between two deformation holes. The reinforcing rib connects the two deformation holes and is used to increase the strength and conductivity of the through terminal.

[0013] Preferably, the terminal body includes a female end portion and a male end portion. The bottom of the female end portion is integrally connected to the limiting platform, and the bottom of the elastic arm is integrally connected to the male end portion. That is, the through terminal of this application includes a female end portion, a male end portion, and a terminal fixing portion. One end of the through terminal is the female end portion, and the other end is the male end portion. The female end portion and the male end portion are connected together by the limiting platform and the elastic arm to form an integral terminal that includes both the female end portion and the male end portion.

[0014] The width of the two symmetrical elastic arms is L, which is greater than the width of the male end to ensure that the male end can pass smoothly through the PCB board pad hole. Then, the elastic arms are interference-fitted with each other.

[0015] Preferably, a guide structure is provided at the connection between the elastic arm and the male end portion. The guide structure at the connection between the elastic arm and the male end portion serves to guide the insertion process of the through-type terminal in this application.

[0016] Preferably, the thickness of the female end portion and the male end portion is the same, and the width of the elastic arm is 0.6 to 0.7 times the thickness of either the female end portion or the male end portion. The width of a single elastic arm is 0.6 to 0.7 times the thickness of either the female end portion or the male end portion, thus ensuring the direction of the elastic force generated by the elastic arm. Preferably, the width of a single elastic arm is 0.7 times the thickness of either the female end portion or the male end portion, because this results in higher strength for the elastic arm.

[0017] Preferably, the female end is a tuning fork terminal structure, and the male end is a plug terminal structure. The tuning fork terminal structure of the female end serves as an input and is connected to a fuse or relay plug in the electrical box; the plug terminal structure of the male end serves as an output and is connected to a wiring harness connector, thus completing the process from input to output through a single terminal.

[0018] The tuning fork terminal structure is made of a high-elasticity copper alloy. This high-elasticity copper alloy possesses high rigidity and fatigue strength, providing lasting elasticity to the tuning fork terminal structure and improving the reliability of the through-hole terminal.

[0019] The beneficial effects of this utility model are: Before soldering, the terminal in this application is fixed in position by interference fit between the terminal fixing part and the PCB board pad hole on the PCB board. This ensures that the terminal is not easy to fall off during soldering, thereby reducing the occurrence of poor terminal soldering due to terminal falling off and improving the reliability of the soldered terminal. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the present invention.

[0022] Figure 2 This is an enlarged view of the terminal fixing part of this utility model.

[0023] Figure 3 This is the front view of the present invention.

[0024] Figure 4 This is a schematic diagram showing the connection between the present invention and the solder pad holes on the PCB board.

[0025] In the figure, 1 is the female end, 2 is the male end, 3 is the terminal fixing part, 3-1 is the limiting stage, 3-2 is the elastic arm, 3-3 is the deformation hole, 3-4 is the reinforcing rib, 3-5 is the guide structure, 4 is the PCB board solder pad hole, and 5 is the PCB board. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: A through terminal for an electrical box on a PCB board, such as... Figure 1 , Figure 3 and Figure 4 As shown, the terminal includes a terminal body, on which a terminal fixing portion 3 is provided that is interference-fitted with the PCB board pad hole 4. That is, the through terminal of this application includes a female end portion 1, a male end portion 2, and a terminal fixing portion 3. One end of the through terminal is the female end portion 1, and the other end is the male end portion 2. The female end portion 1 and the male end portion 2 are connected together by the terminal fixing portion 3, forming an integrated terminal that includes both the female end portion 1 and the male end portion 2. Before soldering, the terminal of this application is fixed in position by the interference fit between the terminal fixing portion 3 and the PCB board pad hole 4 on the PCB board 5. This ensures that the terminal is not easily dislodged during soldering, thus reducing the occurrence of poor soldering due to terminal dislodging, improving the reliability of the soldered terminal, and solving the technical problems of easy terminal dislodging and reduced reliability during soldering.

[0028] The through-type terminal of this application is made of a high-elasticity copper alloy material. This material possesses high rigidity and fatigue strength. The through-type terminal has a sheet-like structure, and its production involves a single stamping process, resulting in a simple structure and high production efficiency.

[0029] Example 2, based on Example 1, provides a through terminal for an electrical box on a PCB board, such as... Figure 1 and Figure 2As shown, the terminal fixing part 3 includes a limiting platform 3-1 disposed on the terminal body and capable of blocking and engaging with the hole wall of the PCB board pad hole 4. An elastic arm 3-2, capable of interference fit with the PCB board pad hole 4, is integrally connected to the bottom of the limiting platform 3-1. The limiting platform 3-1 is designed to block and contact the PCB board 5, limiting the final position of the through terminal. The elastic arm 3-2 is designed to block and engage with the hole wall of the PCB board pad hole 4, ensuring that the through terminal is not easily dislodged from the PCB board 5.

[0030] The flexible arm 3-2 is made of a high-elasticity copper alloy. This high-elasticity copper alloy has high rigidity and fatigue strength, providing the flexible arm 3-2 with lasting elasticity and improving the reliability of the through-type terminal.

[0031] Example 3, based on Example 2, provides a through terminal for a PCB board electrical box, such as... Figure 2 As shown, the terminal body is provided with two limiting platforms 3-1 and two elastic arms 3-2, which are symmetrically arranged along the terminal body. That is, two symmetrical elastic arms 3-2 are provided under the limiting platforms 3-1. The arrangement of the two elastic arms 3-2 helps to ensure that the force is uniform when the terminal body is inserted into the PCB board pad hole 4, thereby ensuring the reliability of the soldered terminal.

[0032] Example 4, based on Example 3, provides a through terminal for an electrical box on a PCB board, such as... Figure 2 As shown, the elastic arm 3-2 has an arc-shaped structure. The main function of the arc-shaped structure is to enhance elasticity during deformation, ensuring that the terminal is not easily dislodged from the PCB board 5. The distance from the highest point of the arc-shaped structure to the limiting platform 3-1 is H, which is less than the thickness of the PCB board 5 and is interference-fitted with the PCB board pad hole 4. This ensures that the elastic arm 3-2 remains in a deformed state after the through terminal is assembled, thereby providing sufficient holding force for the through terminal.

[0033] Example 5, based on Example 4, provides a through terminal for a PCB board electrical box, such as... Figure 2 As shown, the terminal body is provided with deformation holes 3-3, and the two deformation holes 3-3 are symmetrically arranged along the terminal body, located between the two elastic arms 3-2. The elastic arms 3-2 and the deformation holes 3-3 together realize the deformation and clamping function during the insertion process of the through terminal.

[0034] Example 6, based on Example 5, provides a through terminal for an electrical box on a PCB board, such as... Figure 2As shown, the terminal body is provided with a reinforcing rib 3-4, which is located between two deformable holes 3-3. The reinforcing rib 3-4 is connected between the two deformable holes 3-3, and is used to increase the strength and conductivity of the through terminal.

[0035] Example 7, based on any one of Examples 2 to 6, provides a through terminal for a PCB board electrical box, such as... Figure 1 , Figure 3 and Figure 4 As shown, the terminal body includes a female end portion 1 and a male end portion 2. The bottom of the female end portion 1 is integrally connected to the limiting platform 3-1, and the bottom of the elastic arm 3-2 is integrally connected to the male end portion 2. That is, the through terminal of this application includes a female end portion 1, a male end portion 2, and a terminal fixing portion 3. One end of the through terminal is the female end portion 1, and the other end is the male end portion 2. The female end portion 1 and the male end portion 2 are connected together by the limiting platform 3-1 and the elastic arm 3-2 to form an integral terminal that includes the female end portion 1 and the male end portion 2.

[0036] The width of the two symmetrical elastic arms 3-2 is L, which is greater than the width of the male end 2, so as to ensure that the male end 2 can pass smoothly through the PCB board pad hole 4. Then, the elastic arms 3-2 are interference-fitted with each other.

[0037] Example 8, based on Example 7, provides a through terminal for a PCB board electrical box, such as... Figure 1 and Figure 2 As shown, a guide structure 3-5 is provided at the connection between the elastic arm 3-2 and the male end portion 2. The guide structure 3-5 at the connection between the elastic arm 3-2 and the male end portion 2 is used for guiding the through terminal insertion process of this application.

[0038] Example 9, based on Example 8, provides a through terminal for a PCB board electrical box, such as... Figure 1 , Figure 3 and Figure 4 As shown, the female end portion 1 and the male end portion 2 have the same thickness, and the width of the elastic arm 3-2 is 0.6 to 0.7 times the thickness of either the female end portion 1 or the male end portion 2. The width of a single elastic arm 3-2 being 0.6 to 0.7 times the thickness of either the female end portion 1 or the male end portion 2 ensures the direction of the elastic force generated by the elastic arm 3-2. Preferably, the width of a single elastic arm 3-2 is 0.7 times the thickness of either the female end portion 1 or the male end portion 2, because this results in higher strength for the elastic arm 3-2.

[0039] Example 10, based on Example 9, provides a through terminal for a PCB board electrical box, such as... Figure 1 , Figure 3 and Figure 4As shown, the female end portion 1 is a tuning fork terminal structure, and the male end portion 2 is a plug terminal structure. The female end portion 1, as a tuning fork terminal structure, serves as an input and is connected to a fuse or relay plug in the electrical box; the male end portion 2, as a plug terminal structure, serves as an output and is connected to a wiring harness connector, completing the process from input to output through a single terminal.

[0040] The tuning fork terminal structure is made of a high-elasticity copper alloy. This high-elasticity copper alloy possesses high rigidity and fatigue strength, providing lasting elasticity to the tuning fork terminal structure and improving the reliability of the through-hole terminal.

[0041] In Example 10, the through terminal of this application is directly stamped in one step. The through terminal includes a female end portion 1, a male end portion 2, and a terminal fixing portion 3. The terminal fixing portion 3 includes a limiting platform 3-1, an elastic arm 3-2, a deformation hole 3-3, and a reinforcing rib 3-4. Before soldering the through terminal of this application, the through terminal of this application is inserted into the pad hole 4 of the PCB board. At this time, the limiting platform 3-1 makes contact with the PCB board 5 at the position of the pad hole 4, restricting the final position of the through terminal of this application. The elastic arm 3-2 is in a blocking fit with the hole wall of the pad hole 4 of the PCB board to ensure that the through terminal of this application is not easily detached from the PCB board 5.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pass-through terminal for a PCB board electrical box comprising a terminal body, characterized by, The terminal body is provided with a terminal fixing part (3) that is interference-fitted with the PCB board solder pad hole (4); The terminal fixing part (3) includes a limiting platform (3-1) disposed on the terminal body and capable of blocking and cooperating with the hole wall of the PCB board pad hole (4). The bottom of the limiting platform (3-1) is integrally connected with an elastic arm (3-2) capable of interference fit with the PCB board pad hole (4). The terminal body is provided with two limiting platforms (3-1) and two elastic arms (3-2), and the two limiting platforms (3-1) and two elastic arms (3-2) are symmetrically arranged along the terminal body.

2. The pass-through terminal for a PCB board appliance box according to claim 1, characterized in that: The elastic arm (3-2) has an arc-shaped structure.

3. The pass-through terminal for a PCB board appliance box according to claim 2, characterized in that: The terminal body is provided with a deformation hole (3-3), and the two deformation holes (3-3) are symmetrically arranged along the terminal body and are located between the two elastic arms (3-2).

4. The pass-through terminal for a PCB board appliance box according to claim 3, characterized in that: The terminal body is provided with reinforcing ribs (3-4), which are located between two deformation holes (3-3).

5. The pass-through terminal for a PCB appliance box according to any one of claims 1 to 4, characterized in that: The terminal body includes a female end portion (1) and a male end portion (2). The bottom of the female end portion (1) is integrally connected to the limiting platform (3-1), and the bottom of the elastic arm (3-2) is integrally connected to the male end portion (2).

6. The pass-through terminal for a PCB board appliance box according to claim 5, characterized in that: A guide structure (3-5) is provided at the connection between the elastic arm (3-2) and the male end portion (2).

7. The pass-through terminal for a PCB board appliance box according to claim 6, characterized in that: The thickness of the female end portion (1) and the male end portion (2) is the same, and the width of the elastic arm (3-2) is 0.6 to 0.7 times the thickness of the female end portion (1) or the male end portion (2).

8. The pass-through terminal for a PCB board appliance box according to claim 7, characterized in that: The female end portion (1) is a tuning fork terminal structure, and the male end portion (2) is a plug terminal structure.

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