Circuit board plug connector

Abstract

The utility model provides a circuit board plug connector, which comprises a shell and at least one pin arranged in the shell, a limiting structure is arranged between the pin and the shell, the limiting structure comprises a positioning part arranged on one side of the pin or the shell and a limiting groove arranged on the other side of the pin or the shell, and the positioning part can be inserted into the limiting groove. The plug connector can overcome the defects that in the prior art, the effective contact area between a contact pin and a circuit board is reduced due to deformation of the contact pin, and the problems that resistance is increased or signal integrity is degraded easily occur.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board connectors, and particularly relates to a circuit board plug-in connector. Background Art

[0002] The plug-in connectors on the circuit board achieve signal transmission and power supply between different components or modules through detachable connection. As shown in the figure, the plug-in connector includes a housing and a plurality of pins arranged above the housing. The pins are combined with the conductive pads on the circuit board by welding or crimping to form a stable mechanical support and circuit conduction. During the connection process, the force used by the operator cannot be guaranteed to be the same each time, and the downward pressure easily causes the pins to deform, resulting in a relatively low flatness between adjacent pins. The uneven pins lead to a reduction in the effective contact area between the pins and the circuit board, and problems such as an increase in resistance or deterioration of signal integrity are likely to occur. Summary of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the pins deform in the prior art, resulting in a reduction in the effective contact area between the pins and the circuit board, and problems such as an increase in resistance or deterioration of signal integrity are likely to occur, so as to provide a circuit board plug-in connector that can effectively improve the flatness of the pins during welding.

[0004] To this end, the utility model provides a circuit board plug-in connector, including a housing and at least one pin arranged inside the housing. A limiting structure is arranged between the pin and the housing. The limiting structure includes a positioning portion arranged on one side of the pin or the housing and a limiting groove arranged on the other side and capable of inserting the positioning portion.

[0005] Further: The positioning portion is arranged on the pin, and the limiting groove is arranged on the housing.

[0006] Further: The pin includes an insertion rod inserted into the housing and an extension rod arranged in an "L" shape with the insertion rod. The positioning portion is arranged at the extension rod, and the positioning portion is arranged in the middle of the extension rod and extends towards the limiting groove.

[0007] Further: Both sides of the limiting groove are provided with abutting portions that are in abutting connection with the side wall of the positioning portion.

[0008] Further: The positioning portion is formed by stamping.

[0009] Further: The cross-section of the pin is rectangular.

[0010] Further: The cross-section of the pin is circular.

[0011] Further: The cross-section of the pin is square.

[0012] Further: The distance between adjacent pins is 0.5 mm - 5 mm.

[0013] The technical solution of the present utility model has the following advantages:

[0014] 1. For a circuit board connector provided by the present utility model, during the welding process, the pins are combined with the conductive pads on the circuit board by welding or crimping to form a stable mechanical support and circuit conduction. Compared with the prior art, a positioning portion and a limiting groove are provided between the pins and the housing. The positioning portion is clamped in the limiting groove, enabling the positioning portion and the limiting groove to be fixed to each other, thereby preventing the flatness between a plurality of pins arranged in an array from being reduced due to the deformation of the pins during transportation or welding.

[0015] 2. For a circuit board connector provided by the present utility model, the positioning portion is provided on the pins, and the limiting groove is opened in the housing. During the assembly process, multiple pins can be first assembled onto the housing, and then the assembled pins and the housing are placed together on a riveting press to punch the position of the positioning portion of the pins, so that the positioning portion is punched downward and abuts against the limiting groove. After the positioning portion is limited on the left and right by the limiting groove, the deformation of the pins can be effectively prevented, making the distance between adjacent pins more accurate and the flatness higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Structural schematic diagram of a connector for two square pins;

[0018] Figure 2 Structural schematic diagram of a connector for three square pins;

[0019] Figure 3 Structural schematic diagram of a connector for two round pins;

[0020] Figure 4 Structural schematic diagram of a connector for three round pins;

[0021] Figure 5 Cross-sectional schematic diagram of a connector for square pins;

[0022] Figure 6 Cross-sectional schematic diagram of a connector for round pins.

[0023] Description of the reference numerals:

[0024] 1. Housing; 2. Pin; 21. Insertion rod; 22. Extension rod; 3. Limiting structure; 31. Positioning part; 32. Limiting groove; 4. Contact part. Detailed implementation manners

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Embodiment

[0030] This embodiment provides a circuit board connector, including a housing 1 and at least one pin 2 disposed inside the housing 1. A limiting structure 3 is disposed between the pin 2 and the housing 1. The limiting structure 3 includes a positioning part 31 disposed on one of the pin 2 or the housing 1 and a limiting groove 32 disposed on the other side and capable of inserting the positioning part 31.

[0031] The above specific improvement is as follows: Figures 1-6As shown, during the welding process, the pin 2 is combined with the conductive pad on the circuit board by welding or crimping to form a stable mechanical support and electrical conduction. Compared with the prior art, a positioning portion 31 and a limiting groove 32 are provided between the pin 2 and the housing 1. The positioning portion 31 is clamped in the limiting groove 32, which can fix the positioning portion 31 and the limiting groove 32, thereby preventing the flatness of a plurality of pins 2 arranged in an array from being reduced due to the deformation of the pin 2 during transportation or welding.

[0032] Based on the above embodiment: The positioning portion 31 is provided on the pin 2, and the limiting groove 32 is provided on the housing 1.

[0033] The above specific improvement is as follows Figures 1-4 As shown, the positioning portion 31 is provided on the pin 2, and the limiting groove 32 is opened in the housing 1. During the assembly process, multiple pins 2 can be first assembled onto the housing 1, and then the assembled pins 2 and the housing 1 are placed together on a riveting press to punch the position of the positioning portion 31 of the pin 2, so that the positioning portion 31 is punched downward and pressed into the limiting groove 32. After the positioning portion 31 is limited left and right by the limiting groove 32, the deformation of the pin 2 can be effectively prevented, making the distance between adjacent pins 2 more accurate and the flatness higher.

[0034] Based on the above embodiment: The pin 2 includes an insertion rod 21 inserted into the housing 1 and an extension rod 22 arranged in an "L" shape with the insertion rod 21. The positioning portion 31 is provided at the extension rod 22, and the positioning portion 31 is provided in the middle of the extension rod 22 and extends toward the limiting groove 32.

[0035] Based on the above embodiment: On both sides of the limiting groove 32, there are provided abutting portions 4 that are in abutting connection with the side wall of the positioning portion 31.

[0036] Based on the above embodiment: The positioning portion 31 is formed by stamping.

[0037] The above specific improvement is as follows Figures 4-6As shown, the pin 2 includes an insertion rod 21 and an extension rod 22. The insertion rod 21 and the extension rod 22 are integrally formed. The insertion rod 21 is inserted into the shell 1. The extension rod 22 and the insertion rod 21 are arranged perpendicular to each other and extend toward the outside. Interference parts 4 are arranged on both sides of the limiting groove 32. The width of the limiting groove 32 is slightly larger than the width of the extension rod 22 (the width of the limiting groove 32 will be about 0.1 mm larger than the extension rod 22). When the positioning part 31 is stamped, the positioning part 31 arranged on the extension rod 22 will be pressed into the limiting groove 32 and limited by the limiting groove 32, but there will be no interference between the two (if there is no gap between the positioning part 31 and the limiting groove 32, the positioning part 31 will be crushed). Through the setting of the limiting groove 32, the position of the extension rod 22 can be effectively fixed to prevent the distance between the pins 2 from changing or the flatness from being reduced due to the deformation of the extension rod 22 during the assembly process.

[0038] Based on the above embodiment: the cross section of the plug pin 2 is rectangular.

[0039] Based on the above embodiment: the cross section of the pin 2 is circular.

[0040] Based on the above embodiment: the cross section of the plug pin 2 is a square.

[0041] On the basis of the above embodiment: the distance between adjacent pins 2 is 0.5 mm-5 mm.

[0042] The above specific improvements are: Figures 1-4 As shown, the square pin 2 usually has a larger cross-sectional area, a more stable contact point, can provide a lower contact resistance, and is more suitable for large current or high-frequency signal transmission (such as power interface, high-speed signal interface); while the round pin 2 has relatively fewer contact points, but has a lower manufacturing cost, and is suitable for ordinary signal transmission or low-power consumption scenarios. During use, users can install connectors of different specifications according to different scenarios; if the spacing between adjacent pins 2 is too small, the pin 2 may be unevenly stressed during plugging and unplugging, causing deformation or breakage. Reasonable spacing ensures uniform distribution of plugging and unplugging force and extends the life of the connector.

[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A circuit board connector, characterized in that: The invention comprises a housing (1) and at least one plug pin (2) arranged inside the housing (1); a limiting structure (3) is arranged between the plug pin (2) and the housing (1); the limiting structure (3) comprises a positioning portion (31) arranged on one side of the plug pin (2) or the housing (1) and a limiting groove (32) arranged on the other side and capable of being inserted into the positioning portion (31).

2. A circuit board connector according to claim 1, characterized in that: The positioning portion (31) is arranged on the insertion pin (2), and the limiting groove (32) is arranged on the housing (1).

3. A circuit board connector according to claim 2, characterized in that: The insertion pin (2) comprises an insertion rod (21) inserted into the housing (1) and an extension rod (22) arranged in an "L"-shaped structure with the insertion rod (21); the positioning portion (31) is arranged at the extension rod (22); the positioning portion (31) is arranged in the middle of the extension rod (22) and extends toward the limiting groove (32).

4. A circuit board connector according to claim 3, characterized in that: The limiting groove (32) is provided with abutment portions (4) on both sides thereof, which are abutted against the side walls of the positioning portion (31).

5. A circuit board connector according to claim 4, characterized in that: The positioning portion (31) is formed by stamping.

6. A circuit board connector according to any one of claims 1 to 5, characterized in that: The cross section of the plug pin (2) is rectangular.

7. A circuit board connector according to any one of claims 1 to 5, characterized in that: The cross section of the insertion pin (2) is circular.

8. A circuit board connector according to any one of claims 1 to 5, characterized in that: The cross section of the plug pin (2) is square.

9. A circuit board connector according to claim 1, characterized in that: The distance between adjacent pins (2) is 0.5 mm to 5 mm.

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