Crimp terminal
By designing a guide structure with multi-layer chamfers and rounded corners, the scratching and crushing of the plug terminals when crimping the circuit board is solved, and the stability and low heat generation effect are achieved.
Patent Information
- Application Number
- CN202422305935.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing plug-in terminals are prone to scratch and squeeze the copper foil on the surface of the circuit board when crimping the circuit board, resulting in excessive resistance in the socket, generating high heat generation and reducing product stability.
A crimp terminal is designed with a guide structure with multi-layer chamfers and rounded corners. When the pins come into contact with the circuit board jack, the multi-layer chamfers and rounded corner design is used to avoid friction at sharp edges, reduce plugging and unplugging force, and reduce damage to the copper foil on the surface of the circuit board.
It effectively reduces the plugging and unplugging force, avoids scratching and crushing of copper foil on the surface of the circuit board, reduces the contact impedance and heat generation when conducting large currents, and improves the crimping stability.
Smart Images
Figure CN223194037U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crimping terminals, in particular to a crimping terminal with a multi-layer and multi-chamfered structure. Background Art
[0002] There are many ways to connect communication or electrical connectors to circuit boards. One method involves crimping square, solid-core terminals onto the circuit board, inserting the terminal pins into the board's sockets. However, current terminals can easily scratch and break the copper foil on the board during crimping, resulting in excessive resistance within the socket and high heat generation, which in turn reduces product stability.
[0003] Therefore, in view of this, research and improvement are conducted to address the shortcomings of the existing structure, and a crimping terminal is proposed. Utility Model Content
[0004] The purpose of the present invention is to provide a crimping terminal to solve the problems raised in the above background technology.
[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crimping terminal, comprising a base, a docking portion and a pin portion. The docking portion is connected to the first side of the base, and the pin portion is connected to the second side of the base. The pin portion has one or more pins, each of which is a columnar structure, extending along the crimping direction, one end of which is connected to the base, and the other end has a guide portion. The guide portion includes a bottom surface, a first chamfer and a second chamfer. The bottom surface is perpendicular to the crimping direction. The first chamfer is respectively connected to each side edge of the bottom surface and has a first angle with the bottom surface. The second chamfer is adjacent to two adjacent first chamfers and has a second angle with the bottom surface, and the second angle is greater than the first angle.
[0006] Furthermore, the guide portion further includes a first rounded corner, the first rounded corner is arc-shaped, and two side edges thereof are respectively adjacent to two adjacent first chamfers.
[0007] Furthermore, the length of the second chamfer in the crimping direction is longer than the length of the first chamfer in the crimping direction.
[0008] Furthermore, the second chamfer is closer to the base than the first chamfer.
[0009] Furthermore, the guide portion further includes a second rounded corner, which is arc-shaped, and two side edges of the second rounded corner are respectively adjacent to the adjacent first chamfer and the second chamfer.
[0010] Furthermore, the guide portion further includes a third chamfer, the third chamfer is located on the side edge of the pin and has a third angle with the bottom surface, and the third angle is greater than the second angle.
[0011] Furthermore, the guide portion further includes a third fillet, and the third fillet is arc-shaped, and two side edges thereof are respectively adjacent to the adjacent second chamfer and the third chamfer.
[0012] Furthermore, the length of the third chamfer in the crimping direction is longer than the length of the second chamfer in the crimping direction.
[0013] Furthermore, the third chamfer is closer to the base than the second chamfer.
[0014] Furthermore, the base is a square structure, with opposite crimping surfaces and docking surfaces on both sides. The crimping surface is a plane, and the docking surface is an arc-shaped surface. The docking portion includes a cylindrical structure formed by extending from the docking surface, and the pins of the pin portion are formed by extending from the crimping surface along the crimping direction.
[0015] The utility model provides a crimping terminal, which has the following beneficial effects:
[0016] When the crimping terminal is crimped onto the circuit board, the pin is inserted into the circuit board's socket. The multi-layer chamfers and rounded corners on the surface of the guide prevent the sharp edges of the pin from rubbing against the inner surface of the circuit board's socket, effectively reducing the insertion and removal force, and is less likely to scratch or break the copper foil on the circuit board surface. This effectively reduces contact impedance and heat generation when conducting large currents, and improves its stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the crimping terminal of the utility model;
[0018] Figure 2 The utility model crimping terminal Figure 1 Enlarged structural diagram at point A in the middle.
[0019] In the figure: 1, crimping terminal; 200, base; 201, pin portion; 202, docking portion; 203, guide portion; 2030, bottom surface; 2031, first chamfer; 2032, second chamfer; 2033, third chamfer; D, crimping direction; 2041, first rounded corner; 2042, second rounded corner; 2043, third rounded corner; θ1, first angle; θ2, second angle; θ3, third angle. DETAILED DESCRIPTION
[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0021] like Figures 1 to 2As shown, the crimping terminal 1 includes a base 200, a pin portion 201, and a mating portion 202. The base 200 is connected between the pin portion 201 and the mating portion 202. The pin portion 201 has one or more pins and is disposed on a first side of the base 200, while the mating portion 202 is disposed on a second side of the base 200. For example, the pin portion 201 is disposed on the lower surface of the connector base 200, while the mating portion 202 is disposed on the upper surface of the connector base 200; or the pin portion 201 is disposed on the lower surface of the base 200, while the mating portion 202 is disposed on the front surface of the connector base 200. The base 200, pin portion 201, and mating portion 202 can be an integrated structure. As shown in the figure, the base 200 has a square structure with opposing crimping surfaces and mating surfaces on two sides. The crimping surface is flat, while the mating surface is curved. The mating portion 202 comprises a cylindrical structure extending from the mating surface and configured to engage with a corresponding receptacle of the mating electrical connector for electrical connection. The outer surface of the mating portion 202 may include threads or circumferential grooves to secure or position the mating receptacle. The pins of the pin portion 201 are formed by extending from the crimping surface along a crimping direction D. Each pin is a columnar structure (e.g., a square prism) with one end connected to the base 200 and the other end having a guide portion 203. The guide portion 203 includes a bottom surface 2030, a first chamfer 2031, and a second chamfer 2032. The bottom surface 2030 is perpendicular to the crimping direction D. The first chamfer 2031 connects to each side edge of the bottom surface 2030 and forms a first angle θ1 with the bottom surface. The second chamfer 2032 is adjacent to the two adjacent first chamfers 2031, closer to the base 200 than the first chamfers 2031, and defines a second angle θ2 with the bottom surface 2030. The second chamfer 2032 is not adjacent to the bottom surface 2030, and the second angle θ2 is greater than the first angle θ1. In other words, the second chamfer 2032 is located on the side edges of the adjacent two sides of the columnar structure. The length of the second chamfer 2032 in the crimping direction D is longer than the length of the first chamfer 2031 in the crimping direction D.
[0022] A first rounded corner 2041 may be included between two adjacent first chamfers 2031. The first rounded corner 2041 is arc-shaped, with two sides adjacent to the two adjacent first chamfers 2031. A second rounded corner 2042 may be included between the adjacent first chamfer 2031 and the adjacent second chamfer 2032. The second rounded corner 2042 is arc-shaped, with two sides adjacent to the adjacent first chamfer 2031 and the adjacent second chamfer 2032.
[0023] The guide portion 203 may further include a third chamfer 2033 located on adjacent side edges of the columnar pin, closer to the base 200 than the second chamfer 2032, and forming a third angle θ3 with the bottom surface 2030. The third chamfer 2033 does not abut the bottom surface 2030, and the third angle θ3 is greater than the second angle θ2. A third fillet 2043 may be located between adjacent second and third chamfers 2032, 2033. The third fillet 2043 is arc-shaped, with two sides adjacent to the adjacent second and third chamfers 2032, 2033, respectively. The length of the third chamfer 2033 in the crimping direction D is longer than the length of the second chamfer 2032 in the crimping direction D.
[0024] The specific operation is as follows: when the crimping terminal 1 is crimped onto the circuit board, the pin 201 is inserted into the circuit board's socket. The multi-layer chamfers and rounded corners provided on the surface of the guide portion 203 prevent the sharp edges of the pin 201 from rubbing against the inner surface of the circuit board's socket, effectively reducing the insertion and removal force, and is less likely to scratch or break the copper foil on the circuit board surface. This effectively reduces contact impedance and heat generation when conducting large currents, and improves its stability.
[0025] In summary, if Figures 1 to 2 As shown, the pin 201 of the crimping terminal has a guide portion 202 with a multi-layer chamfered structure, which can effectively reduce the insertion and extraction force, and is not easy to scratch and squeeze the copper foil on the surface of the circuit board, thereby improving its crimping stability.
[0026] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.
Claims
1. Crimp terminal, characterized in that, The crimping terminal (1) comprises: a base (200); a docking portion (202) connected to a first side of the base (200); and a pin portion (201) connected to a second side of the base (200); the pin portion (201) comprises one or more pins, each of which is a columnar structure and extends along a crimping direction (D), one end of which is connected to the base (200) and the other end of which has a guide portion (203); the guide portion (203) comprises: a bottom surface (2030), the bottom surface The surface (2030) is perpendicular to the crimping direction (D); a first chamfer (2031), the first chamfer (2031) is respectively connected to each side of the bottom surface (2030) and has a first angle (θ1) with the bottom surface (2030); and a second chamfer (2032), the second chamfer (2032) is adjacent to two adjacent first chamfers (2031) and has a second angle (θ2) with the bottom surface (2030), and the second angle (θ2) is greater than the first angle (θ1).
2. The crimping terminal according to claim 1, wherein: The guide portion (203) further comprises a first rounded corner (2041), wherein the first rounded corner (2041) is arc-shaped, and two side edges thereof are respectively adjacent to two adjacent first chamfers (2031).
3. The crimping terminal according to claim 1, wherein: The length of the second chamfer (2032) in the crimping direction (D) is longer than the length of the first chamfer (2031) in the crimping direction (D).
4. The crimping terminal according to claim 1, wherein: The second chamfer (2032) is closer to the base (200) than the first chamfer (2031).
5. The crimping terminal according to claim 1, wherein: The guide portion (203) further comprises a second rounded corner (2042), wherein the second rounded corner (2042) is arc-shaped, and two side edges thereof are respectively adjacent to the adjacent first chamfer (2031) and the second chamfer (2032).
6. The crimping terminal according to claim 1, wherein: The guide portion (203) further comprises a third chamfer (2033), the third chamfer (2033) being located on the side edge of the pin and having a third included angle (θ3) with the bottom surface (2030), the third included angle (θ3) being greater than the second included angle (θ2).
7. The crimping terminal according to claim 6, wherein: The guide portion (203) further comprises a third rounded corner (2043), the third rounded corner (2043) being arc-shaped, and two side edges thereof being adjacent to the adjacent second chamfer (2032) and the third chamfer (2033).
8. The crimping terminal according to claim 6, wherein: The length of the third chamfer (2033) in the crimping direction (D) is longer than the length of the second chamfer (2032) in the crimping direction (D).
9. The crimping terminal according to claim 6, wherein: The third chamfer (2033) is closer to the base (200) than the second chamfer (2032).
10. The crimping terminal according to claim 7, wherein: The base (200) is a square structure, and has opposite crimping surfaces and butt joint surfaces on both sides. The crimping surface is a plane, and the butt joint surface is an arc-shaped surface. The butt joint portion (202) includes a cylindrical structure formed by extending from the butt joint surface. The pins of the pin portion (201) are formed by extending from the crimping surface along the crimping direction (D).