Columnar conductor connecting structure and circuit board assembly

Abstract

The utility model relates to the field of connectors, in particular to a columnar conductor connecting structure and a circuit board assembly. The columnar conductor connecting structure is used for connecting a columnar conductor to a circuit board and comprises an insulating shell and at least one conductive terminal, and the insulating shell is used for being installed on the circuit board and is provided with at least one embedding groove; the conductive terminals are clamped in the corresponding embedding grooves, and each conductive terminal is provided with at least one electric connection part and at least one clamping fixing part; wherein the electrical connection part is used for being electrically connected with a corresponding part of the circuit board, and the clamping and fixing part is used for clamping and fixing the columnar conductor. According to the utility model, reliable connection between the cylindrical conductor and the circuit board can be conveniently realized.

Description

Columnar conductor connection structure and circuit board assembly Technical Field

[0001] This utility model relates to the field of connectors, specifically to a columnar conductor connection structure and a circuit board assembly. Background Technology

[0002] In the field of electronic equipment manufacturing, electrically connecting cylindrical conductors such as core conductors (such as cable cores) or pins (such as electronic component leads and pins) to printed circuit boards (PCBs) is a key process to ensure the reliability of electrical signal transmission.

[0003] Traditional connection methods mainly rely on direct welding techniques such as wave soldering, reflow soldering, and manual welding. However, these methods suffer from problems such as complex welding processes, strong equipment dependence, insufficient connection reliability, and difficult maintenance.

[0004] Therefore, there is an urgent need to design a connection structure for connecting columnar conductors to circuit boards in order to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a columnar conductor connection structure that can easily realize a reliable connection between the columnar conductor and the circuit board.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a columnar conductor connection structure for connecting columnar conductors to a circuit board, comprising:

[0007] An insulating housing for mounting on the circuit board, having at least one mounting slot;

[0008] At least one conductive terminal, which is fitted into a corresponding mounting slot, has at least one electrical connection portion and at least one mounting and fixing portion; wherein...

[0009] The electrical connection part is used to make an electrical connection with a corresponding part of the circuit board, and the clamping and fixing part is used to clamp and fix the columnar conductor.

[0010] Furthermore, in order to ensure that the conductive terminal can be securely fitted into the mounting groove, a fixing post is provided in the mounting groove, and the conductive terminal also has an elastic locking part, which is fitted into the fixing post and has a constricted opening.

[0011] Furthermore, the end face of the elastic bayonet portion facing the circuit board side is the electrical connection portion.

[0012] Furthermore, two clamping and fixing parts are provided, and the two ends of the elastic jaw part are respectively connected to a clamping and fixing part through an elastic arm.

[0013] Furthermore, the elastic latch portion, the two locking and fixing portions, and the two elastic arms together form a non-closed-loop structure in which the two elastic latch portions are positioned opposite each other with a gap between them.

[0014] Furthermore, the length of the gap is less than the length of the clamping fixing part, and the middle position of the gap in length is exactly opposite to the middle position of the clamping fixing part in length.

[0015] Furthermore, the clamping and fixing part includes two contact arms that are staggered from each other and together form a clamping space.

[0016] Furthermore, the cylindrical conductor is a core conductor or a pin.

[0017] Furthermore, to facilitate easy mounting of the insulating housing onto the circuit board, the insulating housing is provided with at least two mounting pins that mate with mounting holes on the circuit board, and the insulating housing is mounted to the circuit board via these mounting pins; wherein,

[0018] At least one mounting pin is provided with a stop portion that allows it to pass over the mounting hole in the insertion direction and abuts against the stop surface of the mounting hole.

[0019] This utility model also relates to a circuit board assembly, including a columnar conductor, a circuit board, and a columnar conductor connection structure, wherein the columnar conductor is electrically connected to the circuit board through the columnar conductor connection structure.

[0020] By adopting the above technical solution, this utility model has the following beneficial effects:

[0021] This invention pre-installs each conductive terminal within the mounting groove of the insulating housing. The end user simply needs to fix the insulating housing to the circuit board and attach the cylindrical conductor to the mounting part to achieve an electrical connection between the cylindrical conductor and the circuit board. Compared to soldering the cylindrical conductors one by one onto the circuit board, this connection method is simpler, faster, and more reliable. Furthermore, the mounting groove of the insulating housing constrains the conductive terminals, improving integration and miniaturization; it also ensures insulation between adjacent conductive terminals, guaranteeing that the conductive terminals deform in the desired direction. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the columnar conductor connection structure of this utility model;

[0023] Figure 2 is a schematic diagram of the circuit board assembly of this utility model;

[0024] Figure 3 is a structural schematic diagram of the insulating shell of this utility model from one perspective;

[0025] Figure 4 is a structural schematic diagram of the insulating shell of this utility model from another perspective;

[0026] Figure 5 is a schematic diagram of the structure of the conductive terminal of this utility model;

[0027] Figure 6 is a schematic diagram of the circuit board structure of this utility model;

[0028] In the diagram, 1 is a columnar conductor; 2 is a circuit board; 21 is a mounting hole; 3 is an insulating shell; 31 is an insert groove; 32 is a fixing post; 33 is a mounting pin; 331 is a locking part; 4 is a conductive terminal; 41 is an electrical connection part; 42 is a snap-fit ​​fixing part; 421 is a contact arm; 43 is a flexible snap-fit ​​part; 44 is a flexible arm; and 5 is a gap. Detailed Implementation

[0029] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] Example 1

[0031] As shown in Figures 1 to 6, a columnar conductor connection structure is used to connect a columnar conductor 1 to a circuit board 2, comprising:

[0032] An insulating housing 3, for mounting on a circuit board 2, is provided with at least one mounting groove 31;

[0033] At least one conductive terminal 4 is fitted into a corresponding mounting slot 31, and has at least one electrical connection portion 41 and at least one mounting and fixing portion 42; wherein...

[0034] The electrical connection part 41 is used for electrical connection with the corresponding part of the circuit board 2, and the clamping and fixing part 42 is used for clamping and fixing the columnar conductor 1.

[0035] Specifically, each conductive terminal 4 is pre-installed in the mounting groove 31 of the insulating housing 3. The end user only needs to fix the insulating housing 3 onto the circuit board 2 and install the columnar conductor 1 into the mounting and fixing part 42 to achieve an electrical connection between the columnar conductor 1 and the circuit board 2. Compared with soldering the columnar conductor 1 onto the circuit board 2 one by one, this connection method is simple, convenient, quick, and has high connection reliability.

[0036] In addition, by constraining the conductive terminal 4 through the mounting groove 31 of the insulating housing 3, the integration can be improved and miniaturization can be achieved; moreover, the insulation between adjacent conductive terminals 4 can be guaranteed, ensuring that the conductive terminal 4 deforms in the expected direction.

[0037] In the examples shown in Figures 1 to 4, four mounting slots 31 and four conductive terminals 4 are provided, but the number is not limited to these.

[0038] In this embodiment, the electrical connection part 41 and the corresponding part of the circuit board 2 can be electrically connected by welding, by pressing, or by bonding with conductive adhesive. There are multiple connection methods.

[0039] It should be noted that when the electrical connection between the electrical connection part 41 and the circuit board 2 is achieved by welding, the welding difficulty between the two is significantly lower than that between the columnar conductor 1 and the circuit board 2 due to the high degree of fit and large contact area between the electrical connection part 41 and the circuit board 2. The connection reliability between the two is also significantly higher than that between the columnar conductor 1 and the circuit board 2.

[0040] In this embodiment, as shown in Figures 1, 2, and 5, the clamping fixing part 42 may include, but is not limited to, two contact arms 421 that together form a clamping space for clamping the peripheral wall of the columnar conductor 1. Preferably, the two contact arms 421 that together form the clamping space are staggered, so that the clamping fixing part 42 can be formed by cutting and stamping the sheet material, reducing the molding difficulty.

[0041] In this embodiment, the cylindrical conductor 1 can be a core conductor, a pin, etc.

[0042] In this embodiment, there are various ways to mount the insulating housing 3 onto the circuit board 2, such as clip-on or insert-on. As an example, as shown in Figures 1, 2, and 4, the insulating housing 3 is provided with at least two mounting pins 33 that mate with the mounting holes 21 on the circuit board 2. The insulating housing 3 is mounted to the circuit board 2 via the mounting pins 33; wherein,

[0043] At least one mounting pin 33 is provided with a stop portion 331 that allows it to pass over the mounting hole 21 in the insertion direction and abuts against the stop surface of the mounting hole 21.

[0044] This method of connecting the insulating housing 3 to the circuit board 2 is simple to operate and can prevent the insulating housing 3 from detaching from the circuit board 2.

[0045] Example 2

[0046] Based on Embodiment 1, as shown in Figure 3, a fixing post 32 is provided in the mounting groove 31, and the conductive terminal 4 also has an elastic latch 43, which is latched onto the fixing post 32 and has a constricted opening.

[0047] In this way, the conductive terminal 4 can be firmly installed in the mounting groove 31, which can effectively prevent the conductive terminal 4 from shifting in the mounting groove 31, resulting in poor contact or disconnection between the columnar conductor 1 and the circuit board 2.

[0048] In this embodiment, preferably, as shown in FIG5, the end face of the elastic latch portion 43 facing the circuit board 2 is the electrical connection portion 41. That is, each conductive terminal 4 has two electrical connection portions 41.

[0049] As shown in Figure 5, the opening of the elastic latch 43 faces the circuit board 2, that is, the end faces on both sides outside the opening are used as the electrical connection parts 41.

[0050] In this embodiment, preferably as shown in Figures 1, 2, and 5, two clamping fixing parts 42 are provided. Each end of the elastic latching part 43 is connected to a clamping fixing part 42 via an elastic arm 44. Fixing the same cylindrical conductor 1 with two clamping fixing parts 42 enhances the robustness of the mechanical connection and the reliability of the electrical connection between the conductive terminal 4 and the cylindrical conductor 1. Furthermore, each clamping fixing part 42 is connected to one end of the elastic latching part 43 via an elastic arm 44. The presence of the elastic arm 44 provides the clamping fixing part 42 with a certain amount of room to maneuver, compensating for machining tolerances and deformation during long-term use, improving adaptability, and balancing contact pressure to prevent the conductive terminal 4 from tilting or shifting due to uneven force.

[0051] More preferably, as shown in Figures 1, 2, and 5, the elastic latch portion 43, the two locking portions 42, and the two elastic arms 44 together form a non-closed-loop structure in which the two elastic latch portions 43 are positioned opposite each other with a gap 5 between them. The length of the gap 5 is less than the length of the locking portions 42, and the middle position of the gap 5 in length is directly opposite the middle position of the locking portions 42 in length. In this way, the entire conductive terminal 4 is a symmetrical structure in a non-closed loop. The non-closed-loop structure avoids the rigid constraint of a closed loop, and the stress distribution of the elastic arms 44 and the elastic latch portion 43 is more uniform, reducing the risk of fatigue fracture. It also has self-adjusting capability and is suitable for scenarios with high requirements for tolerance compatibility, vibration resistance, and long-term reliability.

[0052] In addition, in each conductive terminal 4, the orientation of the two locking parts 42 is opposite to the orientation of the opening of the elastic latch part 43.

[0053] Example 3

[0054] As shown in Figure 1, a circuit board assembly includes a columnar conductor 1, a circuit board 2, and a columnar conductor connection structure as described in Embodiment 1 or Embodiment 2. The columnar conductor 1 is electrically connected to the circuit board 2 through the columnar conductor connection structure.

[0055] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A columnar conductor connection structure for connecting a columnar conductor (1) to a circuit board (2), characterized in that, include: An insulating housing (3) is used to be mounted on the circuit board (2) and is provided with at least one mounting slot (31); at least one conductive terminal (4) is fitted into the corresponding mounting slot (31) and has at least one electrical connection part (41) and at least one mounting fixing part (42); wherein the electrical connection part (41) is used to electrically connect with the corresponding part of the circuit board (2) and the mounting fixing part (42) is used to fix the columnar conductor (1).

2. The columnar conductor connection structure according to claim 1, characterized in that, A fixing post (32) is provided in the mounting groove (31), and the conductive terminal (4) also has an elastic snap-fit ​​part (43), which is snapped into the fixing post (32) and has a constricted opening.

3. The columnar conductor connection structure according to claim 2, characterized in that, The end face of the elastic bayonet portion (43) facing the circuit board (2) is the electrical connection portion (41).

4. The columnar conductor connection structure according to claim 2, characterized in that, Two clamping and fixing parts (42) are provided, and the two ends of the elastic jaw part (43) are respectively connected to a clamping and fixing part (42) through an elastic arm (44).

5. The columnar conductor connection structure according to claim 4, characterized in that, The elastic latch (43), the two latching and fixing parts (42), and the two elastic arms (44) together form a non-closed-loop structure in which the two elastic latches (43) are positioned opposite each other with a gap (5).

6. The columnar conductor connection structure according to claim 5, characterized in that, The length of the gap (5) is less than the length of the clamping fixing part (42), and the middle position of the gap (5) in length is directly opposite the middle position of the clamping fixing part (42) in length.

7. The columnar conductor connection structure according to claim 1, characterized in that, The clamping and fixing part (42) includes two contact arms (421) that are offset from each other and together form a clamping space.

8. The columnar conductor connection structure according to claim 1, characterized in that, The columnar conductor (1) is a core conductor or a pin.

9. The columnar conductor connection structure according to claim 1, characterized in that, The insulating housing (3) is provided with at least two mounting pins (33) that mate with mounting holes (21) on the circuit board (2), and the insulating housing (3) is mounted on the circuit board (2) by the mounting pins (33); wherein, at least one mounting pin (33) is provided with a backstop (331) that allows it to pass over the mounting hole (21) in the insertion direction and abuts against the backstop of the mounting hole (21).

10. A circuit board assembly, characterized in that, It includes a columnar conductor (1), a circuit board (2), and a columnar conductor connection structure as described in any one of claims 1-9, wherein the columnar conductor (1) is electrically connected to the circuit board (2) through the columnar conductor connection structure.

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