A solderless terminal for PCB

Abstract

The utility model discloses a kind of for PCB exempts from welding type terminal, including terminal main body, the terminal main body bottom is equipped with several pins, pin includes the guide section, the compliance section, the retaining section and the connecting section sequentially arranged from bottom to top, the guide section lower end uses the structure that width gradually increases from bottom to top, the guide section upper end uses the structure that both sides edge is parallel, the compliance section uses the structure that width gradually increases from bottom to top, the retaining section uses the structure that both sides edge is parallel, it is related to connector technical field, the guide section upper end uses the structure that both sides edge is parallel, the compliance section uses the structure that width gradually increases from bottom to top, the retaining section uses the structure that both sides edge is parallel, to increase the contact area of fish eye terminal outside and PCB end hole, increase retaining force, simultaneously, fish eye terminal interior is arranged elastomer, further increase the strength of fish eye hole, avoid the tear of fish eye hole outer wall, further enhance the retaining force of fish eye terminal, fish eye terminal and PCB hole need not welding also can be stably connected.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, specifically a solderless terminal for PCB. Background Technology

[0002] In the field of electronic connectors, fisheye terminals are increasingly widely used due to their advantages such as low insertion force, no soldering required, short processing time, vibration resistance, tolerance compensation, and minimal damage to PCB holes. Different fisheye terminal designs exist on the market. Currently, existing fisheye terminals, during insertion into the PCB's plated through-holes, are compressed and deformed inwards by the simply supported beam structure on both sides of the terminal when they contact the inner wall of the PCB's plated hole. This deformation generates sufficient contact force, providing reliable terminal retention and conductivity. However, most existing fisheye terminals use a rounded outer wall structure with a rounded through-hole in the center. Due to insufficient external support points and a lack of internal support structure, the retention force of the fisheye terminal inserted into the PCB hole is insufficient, making it prone to loosening and detachment. Currently, the most common solution is to add a soldering process to fix the fisheye terminal to the PCB hole; however, this method undoubtedly increases costs significantly and makes the assembly process more complex. Utility Model Content

[0003] The purpose of this invention is to provide a solderless terminal for PCBs to solve the problems mentioned in the background art.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A solderless terminal for PCB includes a terminal body with a plurality of pins at the bottom. Each pin includes a guide section, a conforming section, a retaining section, and a connecting section arranged sequentially from bottom to top. The lower end of the guide section has a structure in which the width gradually increases from bottom to top, and the upper end of the guide section has a structure with parallel sides. The conforming section has a structure in which the width gradually increases from bottom to top, and the retaining section has a structure with parallel sides.

[0006] Preferably, the connection points between the lower end and the upper end of the guide segment, the connection points between the upper end of the guide segment and the compliant segment, the connection points between the compliant segment and the holding segment, the connection points between the holding segment and the connecting segment, and the connection points between the connecting segment and the terminal body are all rounded.

[0007] Preferably, a fisheye hole is provided at the center of the pin, and the fisheye hole is provided inside the compliant section, the retaining section and the connecting section.

[0008] Preferably, the fisheye hole is provided with a plurality of elastic bodies, which are disposed inside the retaining section, and the two ends of the elastic bodies are respectively connected to the two side walls of the fisheye hole.

[0009] Preferably, the elastomer adopts one of the following structures: linear, arc-shaped, m-shaped, and n-shaped.

[0010] Preferably, the terminal body is provided in a plurality of parts, and the plurality of terminal bodies are connected in sequence to form a combined terminal.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] In this invention, the upper end of the guide section adopts a structure with parallel sides, the conforming section adopts a structure with the width gradually increasing from bottom to top, and the holding section adopts a structure with parallel sides, thereby increasing the contact area between the fisheye terminal and the PCB end hole and increasing the holding force. At the same time, an elastomer is set inside the fisheye terminal to further increase the strength of the fisheye hole, avoid tearing of the outer wall of the fisheye hole, and further enhance the holding force of the fisheye terminal. The fisheye terminal and the PCB hole can be stably connected without soldering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the pin structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the combined terminal structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the No. 1 fisheye terminal in this embodiment of the present invention;

[0017] Figure 5 This is a front view of the first fisheye terminal in an embodiment of this utility model;

[0018] Figure 6 This is a vertical sectional view of the first fisheye terminal in an embodiment of this utility model;

[0019] Figure 7 This is a cross-sectional view of the first fisheye terminal in an embodiment of this utility model;

[0020] Figure 8 This is a schematic diagram of the overall structure of the No. 2 fisheye terminal in this embodiment of the present invention;

[0021] Figure 9 This is a front view of the second fisheye terminal in this embodiment of the present invention;

[0022] Figure 10 This is a vertical sectional view of the second fisheye terminal in this embodiment of the present invention;

[0023] Figure 11This is a cross-sectional view of the second fisheye terminal in this embodiment of the present invention;

[0024] Figure 12 This is a schematic diagram of the overall structure of the No. 3 fisheye terminal in this embodiment of the present invention;

[0025] Figure 13 This is a front view of the third fisheye terminal in this embodiment of the present invention;

[0026] Figure 14 This is a vertical sectional view of the third fisheye terminal in this embodiment of the present invention;

[0027] Figure 15 This is a cross-sectional view of the third fisheye terminal in this embodiment of the present invention;

[0028] Figure 16 This is a schematic diagram of the overall structure of the fourth fisheye terminal in this embodiment of the present invention;

[0029] Figure 17 This is a front view of the fourth fisheye terminal in this embodiment of the present invention;

[0030] Figure 18 This is a vertical sectional view of the fourth fisheye terminal in this embodiment of the present invention;

[0031] Figure 19 This is a cross-sectional view of the fourth fisheye terminal in this embodiment of the present invention;

[0032] Figure 20 This is a front view of the fifth fisheye terminal in an embodiment of this utility model;

[0033] Figure 21 This is a vertical sectional view of the No. 5 fisheye terminal in the embodiment of this utility model;

[0034] Figure 22 This is a cross-sectional view of the No. 5 fisheye terminal in the embodiment of this utility model;

[0035] Figure 23 This is a front view of the sixth fisheye terminal in an embodiment of this utility model;

[0036] Figure 24 This is a vertical sectional view of the sixth fisheye terminal in the embodiment of this utility model;

[0037] Figure 25 This is a cross-sectional view of the sixth fisheye terminal in the embodiment of this utility model;

[0038] Figure 26 This is a front view of the fisheye terminal No. 7 in this embodiment of the present invention;

[0039] Figure 27 This is a vertical sectional view of the No. 7 fisheye terminal in the embodiment of this utility model;

[0040] Figure 28 This is a front view of the No. 8 fisheye terminal in an embodiment of this utility model;

[0041] Figure 29 This is a vertical sectional view of the No. 8 fisheye terminal in the embodiment of this utility model;

[0042] In the diagram: 01, terminal body; 02, pin; 1, guide section; 2, conforming section; 3, retaining section; 4, connecting section; 5, fisheye hole; 6, elastomer. Detailed Implementation

[0043] The specific embodiments of this utility model are described in detail below.

[0044] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values ​​are listed as 1 and 2, and the maximum range values ​​are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.

[0045] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0046] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0047] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0048] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0049] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.

[0050] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.

[0051] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.

[0052] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.

[0053] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0054] Example:

[0055] A type of solderless terminal for PCBs, such as Figure 1-3 As shown, the terminal body 01 is provided with several pins 02 at the bottom of the terminal body 01. Each pin 02 includes a guide section 1, a conforming section 2, a retaining section 3 and a connecting section 4 arranged sequentially from bottom to top. The lower end of the guide section 1 adopts a structure in which the width gradually increases from bottom to top, and the upper end of the guide section 1 adopts a structure in which the two sides are parallel. The conforming section 2 adopts a structure in which the width gradually increases from bottom to top, and the retaining section 3 adopts a structure in which the two sides are parallel.

[0056] In one possible implementation, the connection points between the lower end of the guide segment 1 and the upper end of the guide segment 1, the connection points between the upper end of the guide segment 1 and the compliant segment 2, the connection points between the compliant segment 2 and the retaining segment 3, the connection points between the retaining segment 3 and the connecting segment 4, and the connection points between the connecting segment 4 and the terminal body 01 are all rounded.

[0057] In one possible implementation, a fisheye hole 5 is provided at the center of the pin 02, and the fisheye hole 5 is provided inside the compliant section 2, the retaining section 3 and the connecting section 4.

[0058] In one possible implementation, a plurality of elastic bodies 6 are provided inside the fisheye hole 5, and the plurality of elastic bodies 6 are located inside the retaining section 3, with both ends of the elastic bodies 6 connected to the two side walls of the fisheye hole 5 respectively.

[0059] In one possible implementation, the elastomer 6 adopts one of the following structures: linear, arc-shaped, m-shaped, or n-shaped.

[0060] In one possible implementation, a plurality of terminal bodies 01 are provided, and the plurality of terminal bodies 01 are connected in sequence to form a combined terminal.

[0061] In one possible implementation, such as Figure 4-7 As shown, the first fisheye terminal is a 4.8*0.8H fisheye needle, in which an arched elastic body 6 is connected to the inner side of the retaining section 3.

[0062] Furthermore, the single arched structure, with its thinned upper and lower sides designed for elastic deformation, ensures retention force after durability testing.

[0063] In one possible implementation, such as Figure 8-11 As shown, the second fisheye terminal is a 0.63x0.63 arched blind hole fisheye terminal, wherein three arched elastic bodies 6 are connected in sequence along the vertical direction on the inner side of the retaining section 3, and the opening direction of the middle elastic body 6 is opposite to the opening direction of the other two elastic bodies 6.

[0064] Furthermore, the bi-directional arched structure and elastic deformation ensure retention force after durability verification.

[0065] In one possible implementation, such as Figure 12-15 As shown, the third fisheye terminal is a 1.5x0.6 arched blind hole fisheye terminal. Three arched elastic bodies 6 are connected in sequence along the vertical direction inside the fisheye hole 5. The opening direction of the middle elastic body 6 is opposite to the opening direction of the other two elastic bodies 6. In addition, the two ends of the middle elastic body 6 are connected to the two inner ends of the retaining section 3. The other two elastic bodies 6 are connected to the compliant section 2 and the end of the connecting section 4 near the retaining section 3, respectively.

[0066] In one possible implementation, such as Figure 16-19 As shown, the fourth fisheye terminal is a 2.8x0.8 arched blind hole fisheye terminal. Three arched elastic bodies 6 are connected in sequence along the vertical direction inside the fisheye hole 5. The opening direction of the middle elastic body 6 is opposite to the opening direction of the other two elastic bodies 6. In addition, the two ends of the middle elastic body 6 are connected to the two inner ends of the retaining section 3. The other two elastic bodies 6 are connected to the compliant section 2 and the end of the connecting section 4 near the retaining section 3, respectively.

[0067] In addition, as shown in the figure, the difference between the No. 3 fisheye terminal and the No. 4 fisheye terminal is that the No. 3 fisheye terminal is composed of three terminal bodies 01, with two pins 02 connected to the lower end of each terminal body 01, while the No. 4 fisheye terminal is composed of two terminal bodies 01, with two pins 02 connected to the lower end of each terminal body 01.

[0068] Moreover, the multi-directional arched structure and elastic deformation ensure retention force after durability verification.

[0069] In one possible implementation, such as Figure 20-22 As shown, the No. 5 fisheye terminal is a 2.8x0.8_N-shaped blind hole fisheye terminal, wherein an n-shaped elastic body 6 is connected to the inner side of the retaining section 3.

[0070] In one possible implementation, such as Figure 23-25 As shown, the No. 6 fisheye terminal is a 2.8x0.8_M-shaped blind hole fisheye terminal, wherein two M-shaped elastic bodies 6 are connected to the inner side of the retaining section 3, and the opening directions of the two M-shaped elastic bodies 6 are opposite.

[0071] In one possible implementation, such as Figure 26-27 As shown, the No. 7 fisheye terminal is a 2.8x0.8 three-section I blind hole fisheye terminal. Three linear elastomers 6 are connected to the inside of the fisheye hole 5. The two ends of the middle elastomer 6 are connected to the two inner ends of the retaining section 3. The other two elastomers 6 are connected to the outer walls of the conforming section 2 and the connecting section 4, respectively. The ends of the other two elastomers 6 near the retaining section 3 are inclined outward.

[0072] In one possible implementation, such as Figures 28-29 As shown, the No. 8 fisheye terminal is a 2.8x0.8_2 segment type I blind hole fisheye terminal, wherein two linear elastomers 6 are connected to the inner side of the fisheye hole 5. The two elastomers 6 are respectively connected to the inner walls of both ends of the fisheye hole 5, and the adjacent ends of the two elastomers 6 are inclined in opposite directions.

[0073] By adopting the above technical solution:

[0074] The upper end of the guide section 1 adopts a structure with parallel sides, the conforming section 2 adopts a structure with the width gradually increasing from bottom to top, and the holding section 3 adopts a structure with parallel sides, thereby increasing the contact area between the fisheye terminal and the PCB end hole and increasing the holding force. At the same time, an elastomer 6 is set inside the fisheye terminal to further increase the strength of the fisheye hole, avoid tearing of the outer wall of the fisheye hole, and further enhance the holding force of the fisheye terminal. The fisheye terminal and the PCB hole can be stably connected without soldering.

[0075] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 solderless terminal for PCBs, characterized in that: The device includes a terminal body (01), and the bottom of the terminal body (01) is provided with a plurality of pins (02). The pins (02) include a guide section (1), a conforming section (2), a retaining section (3) and a connecting section (4) arranged sequentially from bottom to top. The lower end of the guide section (1) adopts a structure in which the width gradually increases from bottom to top. The upper end of the guide section (1) adopts a structure in which the two sides are parallel. The conforming section (2) adopts a structure in which the width gradually increases from bottom to top. The retaining section (3) adopts a structure in which the two sides are parallel.

2. The solderless terminal for PCB as described in claim 1, characterized in that: The lower end of the guide section (1) is connected to the upper end of the guide section (1), the upper end of the guide section (1) is connected to the compliant section (2), the compliant section (2) is connected to the retaining section (3), the retaining section (3) is connected to the connecting section (4), and the connecting section (4) is connected to the terminal body (01). All of these are rounded.

3. The solderless terminal for PCB as described in claim 1, characterized in that: A fish-eye hole (5) is provided at the center of the pin (02), and the fish-eye hole (5) is provided inside the compliant section (2), the retaining section (3) and the connecting section (4).

4. A solderless terminal for PCB as described in claim 3, characterized in that: The fisheye hole (5) is provided with a plurality of elastic bodies (6), which are located inside the retaining section (3). The two ends of the elastic bodies (6) are respectively connected to the two side walls of the fisheye hole (5).

5. A solderless terminal for PCB as described in claim 4, characterized in that: The elastomer (6) adopts one of the following structures: linear, arc-shaped, m-shaped, or n-shaped.

6. A solderless terminal for PCB as described in claim 1, characterized in that: The terminal body (01) is provided in several parts, and the several terminal bodies (01) are connected in sequence to form a combined terminal.

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