A snap-fit ​​connection structure for connecting circuit boards and core conductors

Abstract

This utility model relates to the field of circuit board and core conductor connection, specifically to a snap-fit ​​connection structure for connecting a circuit board and a core conductor. The snap-fit ​​connection structure includes a housing and at least one connecting terminal; wherein the connecting terminal passes through the housing in the thickness direction and is integrally connected to the housing, and the housing has a first side and a second side on its two sides in the thickness direction; a snap-fit ​​portion is provided at the end of the connecting terminal near the first side, and at least one elastic arm is provided at the end near the second side; the circuit board is snapped onto the second side of the housing, and its solder pads are pressed against the elastic arm for electrical connection; the core conductor is snapped onto the snap-fit ​​portion and electrically connected to the snap-fit ​​portion. This utility model can achieve a convenient and reliable connection between the circuit board and the core conductor using a snap-fit ​​method.

Description

Technical Field

[0001] This utility model relates to the field of circuit board and core conductor connection, specifically to a snap-fit ​​connection structure for connecting circuit board and core conductor. Background Technology

[0002] In the field of electronic equipment manufacturing, a reliable connection between the circuit board and the conductor core is a crucial step in enabling electrical signal transmission and power supply. Traditionally, this connection relies primarily on soldering, where molten solder is used to fix the conductor core to pads or vias on the circuit board. However, this soldering method has many drawbacks in practical applications, such as complex processes, low efficiency, the risk of thermal damage, and insufficient connection reliability.

[0003] Therefore, there is an urgent need to design a non-welded connection structure for the circuit board and the core conductor to solve the above-mentioned technical problems. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a snap-fit ​​connection structure for connecting circuit boards and core conductors. It can achieve convenient and reliable connection between circuit boards and core conductors by snap-fitting.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a snap-fit ​​connection structure for connecting a circuit board and a core conductor, comprising a housing and at least one connection terminal; wherein,

[0006] The connecting terminal passes through the housing in the thickness direction and is connected to the housing as a whole. The housing has a first side and a second side on both sides in the thickness direction.

[0007] The end of the connecting terminal near the first side is provided with a locking part, and the end near the second side is provided with at least one elastic arm.

[0008] The circuit board is clipped onto the second side of the housing, and the pads thereon are pressed together with the elastic arm for electrical connection; the core conductor is clipped onto the clipping part and is electrically connected to the clipping part.

[0009] Furthermore, in order to avoid the trouble of manually removing the insulation layer when the core conductor is wrapped with an insulation layer, the clamping part is configured to cut the insulation layer and establish an electrical connection with the core conductor during the process of the core conductor being clamped in.

[0010] Furthermore, the mounting part is provided with an inlet channel and a limiting hole arranged sequentially along the insertion direction of the core conductor. The width of the inlet channel gradually decreases along the inlet direction and forms a constriction at the end. The width of the constriction is smaller than the diameter of the limiting hole.

[0011] Furthermore, in order to prevent the core conductor from detaching from the mounting part, a mounting connection structure for connecting the circuit board and the core conductor also includes a pressure cap, which is connected to the housing and covers the first side of the housing.

[0012] Furthermore, to facilitate the assembly of the core conductor, the pressure cap is provided with constraint grooves corresponding to the connecting terminals, and the core conductor is constrained in the corresponding constraint grooves. The pressure cap is also provided with a clearance window to avoid the mounting portion.

[0013] The pressure cap is provided with an avoidance window to avoid the mounting part.

[0014] Furthermore, the pressure cap is connected to the outer shell by a snap-fit ​​method.

[0015] Furthermore, one of the cover and the outer shell is provided with a first elastic hook. During the assembly process, the other of the cover and the outer shell passes over the first elastic hook and hooks with the first elastic hook.

[0016] Furthermore, the connecting terminal and the housing are injection molded as a single unit.

[0017] Furthermore, at least one pair of opposite sides of the outer casing are respectively provided with second elastic hooks, and the circuit board passes over the second elastic hooks and hooks with the second elastic hooks during the assembly process.

[0018] Furthermore, the end of the elastic arm is provided with a contact area that contacts the solder pad.

[0019] After adopting the above technical solution, the circuit board is clipped onto the second side of the housing. The elastic arm of the connecting terminal then achieves electrical connection with the corresponding pad on the circuit board. The core conductor is clipped onto the clipping part of the connecting terminal, thus achieving electrical connection between the core conductor and the circuit board. In this way, the core conductor and the circuit board are electrically connected separately through the connecting terminals, achieving an electrical connection between the core conductor and the circuit board. Compared to soldering, this clip-on connection method is convenient to operate, eliminates the risk of thermal damage, and provides a reliable connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a snap-fit ​​connection structure for connecting a circuit board and a core conductor according to the present invention.

[0021] Figure 2 This is an exploded view of a snap-fit ​​connection structure for connecting a circuit board and a core conductor according to the present invention.

[0022] Figure 3This is a schematic diagram of the snap-fit ​​connection structure for connecting a circuit board and a core conductor without a pressure cap, according to the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the connection terminal connecting the core conductor and the circuit board of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the connection terminal of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the pressure cap of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the shell of this utility model;

[0027] In the picture:

[0028] 11. Outer shell; 12. First side; 13. Second elastic hook;

[0029] 21. Connecting terminal; 211. Mounting part; 211. Inlet channel; 2111. Closure; 212. Limiting hole; 22. Flexible arm; 221. Contact area;

[0030] Circuit board; 31. Solder pads;

[0031] Core conductor;

[0032] 5. Cover; 51. Constraint groove; 52. Avoidance window; 53. First elastic hook. Detailed Implementation

[0033] 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.

[0034] Example 1: As Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, a snap-fit ​​connection structure for connecting a circuit board and a core conductor includes a housing 1 and at least one connection terminal 2; wherein,

[0035] The connecting terminal 2 passes through the housing 1 in the thickness direction and is connected to the housing 1 as a whole. The two sides of the housing 1 in the thickness direction are the first side 11 and the second side 12, respectively.

[0036] The end of the connecting terminal 2 near the first side 11 is provided with a locking part 21, and the end near the second side 12 is provided with at least one elastic arm 22.

[0037] The circuit board 3 is mounted on the second side 12 of the housing 1, and the solder pad 31 on it is pressed and electrically connected to the elastic arm 22; the core conductor 4 is mounted on the mounting part 21 and electrically connected to the mounting part 21.

[0038] Specifically, when circuit board 3 is snapped onto the second side of housing 1, the elastic arm 22 of connecting terminal 2 is electrically connected to the corresponding pad 31 of circuit board 3. When core conductor 4 is snapped onto the snap-fit ​​part 21 of connecting terminal 2, the snap-fit ​​part 21 of connecting terminal 2 is electrically connected to core conductor 4. Thus, core conductor 4 and circuit board 3 are electrically connected via connecting terminal 2, achieving an electrical connection between core conductor 4 and circuit board 3. Compared to soldering, this snap-fit ​​connection method is convenient to operate, eliminates the risk of thermal damage, and ensures a reliable connection.

[0039] In this embodiment, when the core conductor 4 is wrapped with an insulating layer, the mounting part 21 is configured to cut through the insulating layer and establish an electrical connection with the core conductor 4 during the insertion process. The insulating layer can be enameled wire or the like. When the core conductor 4 does not have an insulating layer, the core conductor 4 directly establishes an electrical connection with the mounting part 21.

[0040] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, the mounting part 21 is provided with an inlet channel 211 and a limiting hole 212 arranged sequentially along the insertion direction of the core conductor 4. The width of the inlet channel 211 gradually decreases along the inlet direction, forming a constriction 2111 at the end. The width of the constriction 2111 is smaller than the diameter of the limiting hole 212. When the core conductor 4 is wrapped with an insulating layer, the core conductor 4 moves along the inlet channel 211 to the constriction 2111 where it is pierced by the insulating layer and then limited by the limiting hole 212. Since the width of the constriction 2111 is smaller than the diameter of the core conductor 4, the core conductor 4 can pierce the insulating layer as it passes through it.

[0041] After the core conductor 4 enters the limiting hole 212, it is limited by the limiting hole 212. The closing end 2111 can also constrain the core conductor 4 and prevent the core conductor 4 from leaving the limiting hole 212.

[0042] It should be noted that when the core conductor 4 has no insulation layer, it will open the constriction 2111 and enter the limiting hole 212 without damaging it. However, when the core conductor 4 has an insulation layer, although the constriction 2111 can be opened during insertion into the limiting hole 212, the insulation layer will still be punctured.

[0043] In this embodiment, the connecting terminal 2 and the housing 1 can be connected as a whole in a variety of ways, preferably by injection molding the two into a whole structure.

[0044] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, at least one pair of opposite sides of the outer casing 1 are provided with second elastic hooks 13, and the circuit board 3 passes over the second elastic hooks 13 and hooks with the second elastic hooks 13 during the assembly process.

[0045] like Figure 2 , Figure 4 and Figure 5 As shown, the connecting terminal 2 also has an insert portion connected between the mounting portion 21 and the elastic arm 22. The insert portion is horizontal and is embedded in the housing 1. The mounting portion 21 and the insert portion are set at an angle, which can be 90 degrees. Each connecting terminal 2 can have one or two elastic arms 22. The elastic arms 22 of the same connecting terminal 2 can contact the same pad 31 or different pads 31, depending on the actual situation. In order to increase the contact area between the elastic arm 22 and the pad 31 and increase the reliability of the electrical connection, the end of the elastic arm 22 is provided with a contact area 221 for contacting the pad 31.

[0046] Example 2: Based on Example 1, as follows Figures 1 to 7 As shown, a snap-fit ​​connection structure for connecting a circuit board and a core conductor also includes a pressure cap 5, which is connected to the housing 1 and presses against the first side 11 of the housing 1. The overall snap-fit ​​connection structure is relatively small in size; in a specific example, it is 12.55 mm long, 10.8 mm wide, and 4.5 mm high, but other dimensions can be set as needed.

[0047] Specifically, by pressing the core conductor 4 with the pressure cap 5, the core conductor 4 can be better prevented from detaching from the mounting part 21, thereby further improving the reliability of the connection between the core conductor 4 and the connecting terminal 2.

[0048] In this embodiment, preferably, as follows: Figure 1 , Figure 2 and Figure 6 As shown, the pressure cover 5 is provided with a constraint groove 51 corresponding to each of the connecting terminals 2. The core conductor 4 is constrained in the corresponding constraint groove 51. The pressure cover 5 is provided with a clearance window 52 to avoid the mounting part 21 of each connecting terminal 2 at the position opposite to the mounting part 21.

[0049] Specifically, during assembly, the core conductor 4 can be pre-fitted into the elongated constraint groove 51 of the pressure cap 5. During the capping process, the core conductor 4 is engaged into the mounting part 21 under the pressure of the cap 5. This further reduces assembly difficulty and improves assembly efficiency compared to directly fitting the core conductor 4 into the mounting part 21 and then straightening it. The clearance window 52 serves two purposes: firstly, it prevents the pressure cap 5 from being interfered with by the mounting part 21 during the capping process; secondly, it allows observation of whether the core conductor 4 is properly engaged within the mounting part 21.

[0050] In this embodiment, the pressure cap 5 can be connected to the outer casing 1 in various ways, such as screw connection, snap-fit, adhesive bonding, etc. Figure 1 and Figure 2 In the example shown, the pressure cap 5 is connected to the outer shell 1 by a snap-fit ​​mechanism. A first elastic hook 53 can be provided on one of the pressure cap 5 and the outer shell 1. During assembly, the other of the pressure cap 5 and the outer shell 1 passes over the first elastic hook 53 and engages with it. The snap-fit ​​mechanism between the pressure cap 5 and the outer shell 1 further improves the ease of assembly and disassembly.

[0051] 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 snap-fit ​​connection structure for connecting a circuit board and a core conductor, characterized in that, Includes a housing (1) and at least one connecting terminal (2); wherein, The connecting terminal (2) passes through the outer shell (1) in the thickness direction and is connected to the outer shell (1) as a whole. The outer shell (1) has a first side (11) and a second side (12) on both sides in the thickness direction. The end of the connecting terminal (2) near the first side (11) is provided with a locking part (21), and the end near the second side (12) is provided with at least one elastic arm (22). The circuit board (3) is clipped onto the second side (12) of the housing (1), and the pads (31) thereon are pressed together with the elastic arm (22) for electrical connection; the core conductor (4) is clipped onto the clipping part (21) and is electrically connected to the clipping part (21).

2. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1, characterized in that, When the core conductor (4) is wrapped with an insulating layer, the latching part (21) is configured to cut through the insulating layer and establish an electrical connection with the core conductor (4) during the process of the core conductor (4) being latched in.

3. A snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1 or 2, characterized in that, The mounting part (21) is provided with an inlet channel (211) and a limiting hole (212) arranged sequentially along the insertion direction of the core conductor (4). The width of the inlet channel (211) gradually decreases along the inlet direction and forms a closing opening (2111) at the end. The width of the closing opening (2111) is smaller than the diameter of the limiting hole (212).

4. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1, characterized in that, It also includes a pressure cap (5), which is connected to the housing (1) and covers the first side (11) of the housing (1).

5. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 4, characterized in that, The pressure cap (5) is provided with a constraint groove (51) corresponding to the connection terminal (2) one by one. The core conductor (4) is constrained in the corresponding constraint groove (51). The pressure cap (5) is provided with a clearance window (52) to avoid the mounting part (21).

6. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 4, characterized in that, The pressure cap (5) is connected to the outer shell (1) by a snap-fit ​​method.

7. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 6, characterized in that, One of the cover (5) and the outer shell (1) is provided with a first elastic hook (53). During the assembly process, the other of the cover (5) and the outer shell (1) passes over the first elastic hook (53) and hooks with the first elastic hook (53).

8. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1, characterized in that, The connecting terminal (2) and the outer shell (1) are injection molded as an integral structure.

9. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1, characterized in that, The outer casing (1) is provided with at least one pair of opposite sides respectively with second elastic hooks (13), and the circuit board (3) passes over the second elastic hooks (13) and hooks with the second elastic hooks (13) during the assembly process.

10. The snap-fit ​​connection structure for connecting a circuit board and a core conductor according to claim 1, characterized in that, The end of the elastic arm (22) is provided with a contact area (221) that contacts the pad (31).

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