A tight-fitting capacitor pin

Abstract

The utility model relates to capacitor pin technical field, and disclose a kind of tight fit type capacitor pin, including capacitor body, the bottom of capacitor body is equipped with pin main body, the bottom of pin main body is equipped with guide chamfer, the surface of pin main body is provided with first fixed component and second fixed component;The tight fit type capacitor pin, by setting first fixed component, can provide additional friction when pin main body is inserted into PCB hole, so that capacitor body can be firmly fixed on PCB before welding, prevent falling or displacement, by setting second fixed component, can be filled in cavity mode when welding, the fixing strength after welding is enhanced, ensure that capacitor body is connected stable in use, reduce contact failure.

Description

Technical Field

[0001] This utility model relates to the field of capacitor pin technology, specifically a tight-fit capacitor pin. Background Technology

[0002] Capacitor leads are an important component of capacitors. They refer to the conductive metal terminals extending from the capacitor body and are used to mechanically fix and electrically connect the capacitor to a circuit (such as a PCB board). Their core function is to transmit electrical signals and energy, enabling the capacitor to be connected to the circuit and perform functions such as filtering, coupling, and energy storage. Common materials are conductive metals such as copper and iron-nickel alloys. The form can be designed as through-hole, surface mount, etc., according to assembly requirements. The surface is often treated with tin plating to improve solderability and corrosion resistance.

[0003] The existing capacitor leads are not securely fixed to the circuit board during assembly. They are prone to falling off or shifting before soldering, which affects assembly efficiency and soldering quality, and may lead to malfunctions such as poor contact during capacitor use. Utility Model Content

[0004] This invention provides a tight-fit capacitor pin that can be fixed before soldering, thus solving the problem mentioned in the background art that the pin is prone to falling off or shifting before soldering.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tight-fit capacitor pin, including a capacitor body, a pin body mounted on the bottom of the capacitor body, a guide chamfer mounted on the bottom end of the pin body, and a first fixing component and a second fixing component provided on the surface of the pin body, the angle of the guide chamfer being 30°-45°.

[0006] As an optional solution of this utility model, the first fixing component is a barb, with the tip of the barb facing away from the capacitor body.

[0007] As an optional solution of this utility model, there are multiple barbs, and the multiple barbs are evenly distributed along the axial direction of the pin body.

[0008] As an optional solution of this utility model, the barb and the lead body are integrally formed, and the barb is made of conductive metal material.

[0009] As an optional solution of this utility model, the first fixing component is a knurled structure, which is a straight knurled or mesh knurled structure that extends along the axial direction of the lead body.

[0010] As an optional solution of this utility model, the knurling depth is 0.1-0.3mm and the knurling width is 0.2-0.5mm.

[0011] As an optional solution of this utility model, the second fixing component includes a frustum fixedly sleeved on the surface of the pin body. The top of the frustum has a plurality of first liquid inlet grooves, the inner side of the frustum has a plurality of connecting grooves, the inside of the pin body has a cavity, and the surface of the pin body has a plurality of second liquid inlet grooves.

[0012] As an optional solution of this utility model, the connecting groove and the second liquid inlet groove are respectively arranged, and the connecting groove is interconnected with the cavity through the second liquid inlet groove.

[0013] This utility model has the following beneficial effects: This tight-fit capacitor pin design, by incorporating a first fixing component, provides additional friction when the pin body is inserted into the PCB hole, ensuring the capacitor body is firmly fixed to the PCB board before soldering, preventing it from falling off or shifting. By incorporating a second fixing component, the solder fills the cavity during soldering, enhancing the fixation strength after soldering, ensuring stable connection of the capacitor body during use, and reducing contact failures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of the second fixing component in Embodiment 1 of this utility model.

[0016] Figure 3 This is a partial cross-sectional view of the pin body in Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0018] In the diagram: 1. Capacitor body; 2. Lead body; 3. Guide chamfer; 4. First fixing component; 5. Second fixing component; 41. Barbs; 42. Knurled texture; 51. Frustum; 52. First inlet tank; 53. Connecting tank; 54. Cavity; 55. Second inlet tank. Detailed Implementation

[0019] 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.

[0020] Example 1 Please see Figure 1-3 A tight-fit capacitor lead includes a capacitor body 1, a lead body 2 mounted on the bottom of the capacitor body 1, a guide chamfer 3 mounted on the bottom end of the lead body 2, and a first fixing component 4 and a second fixing component 5 provided on the surface of the lead body 2. The angle of the guide chamfer 3 is 30°-45°. By setting the guide chamfer 3, it can guide the lead body 2 when it is inserted into the PCB hole, thereby reducing the assembly difficulty. By setting the first fixing component 4 and the second fixing component 5, temporary fixation before soldering and reinforcement after soldering can be achieved, comprehensively improving the connection stability between the lead body 2 and the PCB board and solving the problem of traditional leads being easy to fall off and shift.

[0021] Furthermore, the first fixing component 4 is a barb 41, with the tip of the barb 41 facing away from the capacitor body 1. By setting the barb 41, it can form a one-way engagement with the hole wall when inserted into the PCB hole. The additional friction force generated by the reaction force of the hole wall on the barb is used to achieve preliminary fixing before soldering and prevent the capacitor body 1 from falling off due to vibration or flipping during the assembly process.

[0022] The number of barbs 41 is 3-6, and the 3-6 barbs 41 are evenly distributed along the axial direction of the pin body 2; this can make the pin body 2 and the PCB hole wall bear forces evenly, avoid excessive local stress that could damage the hole wall, and at the same time ensure consistent friction in all directions, thus improving the stability and reliability of the fixation.

[0023] It should also be noted that the barb 41 and the pin body 2 are integrally formed, and the barb 41 is made of conductive metal material; the integrally formed barb 41 and the pin body 2 can enhance the connection strength and prevent the barb 41 from falling off; the conductive metal material can ensure that the conductivity of the pin body 2 is not affected.

[0024] Furthermore, the second fixing component 5 includes a frustum 51 fixedly sleeved on the surface of the pin body 2. The top of the frustum 51 has multiple first liquid inlet grooves 52, and the inner side of the frustum 51 has multiple connecting grooves 53. The interior of the pin body 2 has a cavity 54, and the surface of the pin body 2 has multiple second liquid inlet grooves 55. The frustum 51 can form a secondary positioning with the PCB hole, which further increases the stability between the pin body 2 and the PCB board. The first liquid inlet grooves 52, connecting grooves 53, second liquid inlet grooves 55 and cavity 54 can form a solder flow channel, which can guide the solder to flow smoothly into the cavity 54 during soldering, providing a structural basis for soldering reinforcement.

[0025] The connecting groove 53 and the second liquid inlet groove 55 are respectively set. The connecting groove 53 is interconnected with the cavity 54 through the second liquid inlet groove 55. The interconnected connecting groove 53, the second liquid inlet groove 55 and the cavity 54 can ensure that the solder can be fully filled into the cavity 54. After the solder cools down, it forms a firm mechanical bond with the pin body 2 and the PCB board, which greatly improves the welding strength and connection stability and prevents poor contact during long-term use.

[0026] Example 2 This second embodiment is an improvement upon the first embodiment. The difference between it and the first embodiment is that... (Please refer to...) Figure 4 The first fixing component 4 is a knurled structure 42, which is a straight-knurled or mesh-knurled structure extending along the axial direction of the lead body 2. The knurling depth of the knurling structure 42 is 0.1-0.3mm, and the knurling width of the knurling structure 42 is 0.2-0.5mm. The knurling structure 42 increases the contact friction with the PCB hole wall by increasing the surface roughness of the lead, thus achieving stable fixing before soldering. The straight-knurled or mesh-knurled processing technology is mature, adaptable to different assembly scenarios, and does not affect the smoothness of lead insertion.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tight-fit capacitor lead, comprising a capacitor body (1), characterized in that: The bottom of the capacitor body (1) is equipped with a lead body (2), and the bottom end of the lead body (2) is equipped with a guide chamfer (3). The surface of the lead body (2) is provided with a first fixing component (4) and a second fixing component (5). The angle of the guide chamfer (3) is 30°-45°.

2. The tight-fit capacitor pin according to claim 1, characterized in that: The first fixing component (4) is a barb (41), and the tip of the barb (41) is set toward the side away from the capacitor body (1).

3. The tight-fit capacitor pin according to claim 2, characterized in that: The number of the barbs (41) is multiple, and the multiple barbs (41) are evenly distributed along the axial direction of the pin body (2).

4. The tight-fit capacitor pin according to claim 2, characterized in that: The barb (41) and the pin body (2) are integrally formed, and the barb (41) is made of conductive metal material.

5. The tight-fit capacitor pin according to claim 1, characterized in that: The first fixing component (4) is a knurled structure (42), which is a straight knurled or mesh knurled structure that extends along the axial direction of the pin body (2).

6. The tight-fit capacitor pin according to claim 5, characterized in that: The knurling structure (42) has a knurling depth of 0.1-0.3 mm and a knurling width of 0.2-0.5 mm.

7. The tight-fit capacitor pin according to claim 1, characterized in that: The second fixing component (5) includes a frustum (51) fixedly sleeved on the surface of the pin body (2). The top of the frustum (51) is provided with a plurality of first liquid inlet grooves (52), the inner side of the frustum (51) is provided with a plurality of connecting grooves (53), the inside of the pin body (2) is provided with a cavity (54), and the surface of the pin body (2) is provided with a plurality of second liquid inlet grooves (55).

8. The tight-fit capacitor lead according to claim 7, characterized in that: The connecting groove (53) and the second liquid inlet groove (55) are respectively provided, and the connecting groove (53) is connected to the cavity (54) through the second liquid inlet groove (55).

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