Terminal for improving contact performance

Abstract

The utility model discloses a terminal of improving contact performance, include: terminal body, the terminal body is provided with the plug cavity, two groups of first elastic arm, the both sides of terminal body are equipped with first hollow position, two groups of first elastic arm symmetry sets up in the both sides of terminal body, two groups of second elastic arm, one end of two groups of second elastic arm is connected with the top of terminal body, is provided with multistage bending elastic structure on second elastic arm, third elastic arm, the second hollow position is equipped in the lower extreme of terminal body, one end of third elastic arm is connected with terminal body, and third abutting portion is formed on third elastic arm, first abutting portion, second abutting portion and third abutting around the axle center of plug cavity form the clamping space all round, the rear end of terminal body is provided with the line pressure portion, the utility model avoids stress concentration in single root, delays metal fatigue fracture.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a terminal that improves contact performance. Background Technology

[0002] As a core component for signal transmission and power conduction in electronic devices, the quality of the connector terminal's contact surface directly affects the reliability and stability of the electrical connection. Currently, connectors mainly achieve conductivity by having abutting arms contact the conductive components. However, the current abutting arm structure is not ideal, making it prone to loosening. Furthermore, under impact or collision, the conductive terminals of the electrical connector often deform improperly due to resonance, causing the multiple abutting arms to momentarily lose contact with the conductive components, leading to malfunctions or even damage to electronic products. Therefore, further improvements to the terminal structure are necessary. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a terminal with improved contact performance, which can achieve clamping and locking of four contacts in the top, bottom, left and right directions, maintain the conductive path in multiple directions, and improve reliability; and the contact in the four directions can generate complementary stress distribution during insertion and removal, avoid stress concentration at a single root, and delay metal fatigue fracture.

[0004] To achieve the above objectives, this utility model provides a terminal with improved contact performance, comprising:

[0005] Terminal body, wherein the terminal body is provided with a insertion cavity;

[0006] Two sets of first elastic arms, with first hollow positions opened on both sides of the terminal body, the two sets of first elastic arms are symmetrically arranged on both sides of the terminal body, the end of the first elastic arm is connected to the terminal body, its front end extends obliquely from the first hollow position into the insertion cavity, and the front end of the first elastic arm is folded back to form a first abutting part.

[0007] Two sets of second elastic arms, one end of which is connected to the top of the terminal body. A multi-stage bending elastic structure is provided on the second elastic arm so that the other end of the second elastic arm is inclined toward the insertion cavity. The second elastic arm is provided with a second abutment part.

[0008] The third elastic arm has a second hollowed-out position at the lower end of the terminal body. One end of the third elastic arm is connected to the terminal body. The third elastic arm is inclined so that the other end of the third elastic arm is inclined toward the insertion cavity, and a third abutment part is formed on the third elastic arm.

[0009] The first abutting part, the second abutting part, and the third abutting part form a clamping space around the axis of the insertion cavity;

[0010] The terminal body has a wire clamping section at its rear end.

[0011] Furthermore, the first elastic arm includes a first connecting portion connected to the terminal body, the first connecting portion being connected to a first bent portion, the first bent portion being connected to a first inclined portion, and the other end of the first inclined portion away from the first bent portion being folded back to form the aforementioned first abutting portion, the first abutting portion also being connected to a guide portion. The combination of the first bent portion and the first inclined portion forms an elastic deformation space, enabling the abutting portion to buffer external forces and maintain stable contact pressure during insertion, avoiding poor contact due to vibration.

[0012] Furthermore, the first elastic arm is also provided with a first reinforcing rib, which is continuously disposed on the first connecting portion, the first bending portion, and the first inclined portion. The reinforcing rib is continuously distributed along the key stress areas of the elastic arm (first connecting portion → first bending portion → first inclined portion), which significantly improves the overall rigidity and avoids plastic deformation or permanent deformation of the elastic arm during insertion, removal, or vibration; at the same time, the reinforcing rib can disperse the stress concentration of the first elastic arm during repeated deformation, reduce the risk of fatigue fracture at the junction of the bending portion and the inclined portion, thereby extending the service life of the terminal.

[0013] Furthermore, the first reinforcing rib has a concave structure. The concave structure can guide the material flow during stamping, making the internal grain distribution of the metal more uniform, reducing stress concentration points, and preventing cracks or fractures in the bending part due to repeated deformation. Compared with the protruding reinforcing rib, the concave design can distribute the load more evenly when under stress, and is especially suitable for high-frequency insertion and extraction or vibration environments.

[0014] Furthermore, the multi-stage bending elastic structure includes a second bending portion connected to the terminal body, a second connecting portion connected to the second bending portion, a third bending portion connected to the second connecting portion, a third connecting portion connected to the third bending portion, a fourth bending portion connected to the third connecting portion, and a fourth connecting portion connected to the fourth bending portion. The fourth connecting portion is folded back to form the aforementioned second abutment portion. The three-stage bending (second / third / fourth bending portions) forms a series elastic system, providing a longer elastic deformation space than single-stage or double-stage bending. Each bending portion can absorb external force in segments, avoiding stress concentration and achieving a progressive buffering effect similar to a "spring array," preventing plastic deformation caused by instantaneous impact. Moreover, the multi-stage bending structure disperses stress to different sections, significantly reducing the fatigue risk of a single bending point and improving its service life.

[0015] Furthermore, the bending directions of the second and fourth bends are opposite to those of the third and second abutment portions. This bidirectional, reversible bending forms a three-dimensional elastic network, resulting in better elastic cushioning and better preventing plastic deformation caused by sudden impacts.

[0016] Furthermore, the bending angle of the second bend is greater than that of the third bend. The second bend bears the main deformation, reducing the number of stress cycles in the small-angle bend (the third bend), thereby delaying metal fatigue.

[0017] Furthermore, the third elastic arm includes a fifth connecting portion connected to the terminal body, a fifth bent portion connected to the fifth connecting portion, a sixth connecting portion connected to the fifth bent portion, a seventh bent portion connected to the sixth connecting portion, and an eighth connecting portion connected to the seventh bent portion. The other end of the eighth connecting portion away from the seventh bent portion is folded back to form the aforementioned third abutment portion. This creates a three-level elastic deformation synergy. The fifth bent portion bears the initial insertion and extraction deformation, the seventh bent portion provides intermediate rigid support, and the folded third abutment portion provides high rigidity in the final contact area, stabilizing the contact pressure. Each level of the bent portion can absorb external force in segments, avoiding stress concentration and achieving a progressive buffering effect similar to a "spring array," preventing plastic deformation caused by instantaneous impact.

[0018] Furthermore, the terminal body also has an upwardly protruding assembly positioning part on its rear side, and a downwardly bent snap-fit ​​arm on its lower side. The assembly positioning part facilitates positioning and prevents excessive insertion from affecting assembly, while the snap-fit ​​arm prevents the terminal from dislodging, making the assembly more stable and less prone to falling off.

[0019] Furthermore, the wire clamping section includes a first wire clamping position and a second wire clamping position arranged at intervals, and a first wire clamping arm and a second wire clamping arm are respectively provided on both sides of the first wire clamping position and the second wire clamping position. These are used to fix the incoming wire, making the connection between the wire and the terminal more secure and less prone to detachment.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention, by setting two first elastic arms, a second elastic arm, and a third elastic arm to form a first contact part, a second contact part, and a third contact part, can clamp and lock the mating conductive parts at four contact points in the up, down, left, and right directions, maintaining the conductive path in multiple directions and improving reliability; and the contact in the four directions can generate complementary stress distribution during insertion and removal, avoiding stress concentration at a single root and delaying metal fatigue fracture.

[0022] In particular, the first elastic arm is provided with continuously arranged concave reinforcing ribs, which are continuously distributed along the key stress areas of the elastic arm (first connecting part → first bending part → first inclined part), significantly improving the overall rigidity and preventing plastic deformation or permanent deformation of the elastic arm during insertion, removal or vibration; at the same time, the reinforcing ribs can disperse the stress concentration of the first elastic arm during repeated deformation, reduce the risk of fatigue fracture at the junction of the bending part and the inclined part, thereby extending the service life of the terminal.

[0023] The second elastic arm, arranged side by side, improves the stability of the upper contact. The multi-stage bending elastic structure of the second elastic arm is a series elastic system formed by three-stage bending (second / third / fourth bending section), providing a longer elastic deformation space than single-stage or double-stage bending. Each bending section can absorb external force in segments, avoiding stress concentration and achieving a progressive buffering effect similar to a "spring array," preventing plastic deformation caused by instantaneous impact. Furthermore, the multi-stage bending structure disperses stress to different sections, significantly reducing the fatigue risk of a single bending point and improving its service life. Attached Figure Description

[0024] To more clearly illustrate the technology in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a terminal for improving contact performance according to this utility model;

[0026] Figure 2 yes Figure 1 A partial schematic diagram from another perspective;

[0027] Figure 3 yes Figure 1 A schematic diagram from another perspective;

[0028] Figure 4 This is a front view schematic diagram of the present invention;

[0029] Figure 5 This is an assembly diagram of the utility model, the connector, and the mating conductor.

[0030] The diagram includes:

[0031] 1. Terminal body; 11. First opening; 12. Insertion cavity; 121. Clamping area; 13. Front frame structure; 14. First cutout; 15. Second cutout; 16. Assembly positioning part; 17. Snap-fit ​​arm; 18. Wire pressing part; 181. First wire pressing position; 182. Second wire pressing position; 183. First wire pressing arm; 184. Second wire pressing arm; 2. Connecting conductive component; 3. First elastic arm; 31. First abutment part; 32. First connecting part; 33. First bending part; 34. 35. Inclined portion; 36. Guide portion; 4. First reinforcing rib; 5. Second elastic arm; 61. Second abutting portion; 42. Second bending portion; 43. Second connecting portion; 44. Third bending portion; 45. Third connecting portion; 46. Fourth bending portion; 47. Fourth connecting portion; 5. Third elastic arm; 51. Third abutting portion; 52. Fifth connecting portion; 53. Fifth bending portion; 54. Sixth connecting portion; 55. Seventh bending portion; 56. Eighth connecting portion; 6. Connector; 61. Mounting cavity. Detailed Implementation

[0032] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0035] Please see Figures 1 to 5 An embodiment of this utility model provides a terminal with improved contact performance, including a terminal body 1:

[0036] like Figure 1As shown, the left and right sides of the terminal body 1 in this embodiment are folded back to form a hollow frame structure, and a first opening 11 is formed at the upper end of the terminal body 1. A hollow insertion cavity 12 is formed in the center of the terminal body 1. The insertion cavity 12 is used to insert the mating conductive member 2, such as the square mating conductive member 2 shown in the figure. Of course, the shape of the insertion cavity 12 matches the mating conductive member 2 and varies accordingly depending on the shape of the mating conductive member 2.

[0037] A front frame structure 13 is formed on the terminal body 1, which is used for guiding and supporting the conductive part 2.

[0038] A set of first elastic arms 3 is provided at each of the left and right ends of the terminal body 1, two sets of second elastic arms 4 are provided side by side at the upper end of the terminal body 1, and a set of third elastic arms 5 is provided at the lower end of the terminal body 1, thereby forming a clamping and conducting connection with the conductive component 2; the specific arrangement of these components is as follows:

[0039] The terminal body 1 has first cutouts 14 on both sides. Two sets of first elastic arms 3 are symmetrically arranged on both sides of the terminal body 1. The end of the first elastic arm 3 is connected to the terminal body 1, and its front end extends obliquely from the first cutout 14 into the insertion cavity 12. The front end of the first elastic arm 3 is folded back to form a first abutment portion 31. Specifically, the first elastic arm 3 includes a first connecting portion 32 connected to the terminal body 1. The first connecting portion 32 is connected to a first bending portion 33. The first bending portion 33 is connected to a first inclined portion 34. The other end of the first inclined portion 34 away from the first bending portion 33 is folded back to form the aforementioned first abutment portion. The first abutting part 31 is also connected to the guide part 35, thereby forming an inclined arrangement from the first connecting part 32 towards the axis of the insertion cavity 12. In order to improve the overall rigidity of the first elastic arm 3, the first elastic arm 3 is also provided with a first reinforcing rib 36. The first reinforcing rib 36 is continuously arranged on the first connecting part 32, the first bending part 33 and the first inclined part 34. The reinforcing rib is continuously distributed along the key stress area of ​​the first elastic arm 3 (first connecting part 32 → first bending part 33 → first inclined part 34), which significantly improves the overall rigidity and avoids plastic deformation or permanent deformation of the elastic arm during insertion, removal or vibration.

[0040] Preferably, the first reinforcing rib 36 has a concave structure. The concave structure can guide the material flow during stamping, making the internal grain distribution of the metal more uniform, reducing stress concentration points, and preventing cracks or fractures in the bending part due to repeated deformation. Compared with the protruding reinforcing rib, the concave design can distribute the load more evenly when under stress, which is especially suitable for high-frequency insertion or vibration environments.

[0041] One end of each of the two sets of second elastic arms 4 is connected to the top of the terminal body 1, as shown in the figure. In this embodiment, the two sets of second elastic arms 4 are arranged side by side on both sides of the first opening 11, so that the two are not interfered with by each other and can work independently. This structure gives the upper end of the terminal body 1 a dual elastic conduction function, thereby further improving its conduction stability.

[0042] A multi-stage bending elastic structure is provided on the second elastic arm 4, causing the other end of the second elastic arm 4 to tilt towards the insertion cavity 12. The second elastic arm 4 is provided with a second abutment portion 41, such as... Figure 2 As shown, the multi-stage bending elastic structure includes a second bending portion 42 connected to the terminal body 1, a second connecting portion 43 connected to the second bending portion 42, a third bending portion 44 connected to the second connecting portion 43, a third connecting portion 45 connected to the third bending portion 44, a fourth bending portion 46 connected to the third connecting portion 45, and a fourth connecting portion 47 connected to the fourth bending portion 46. The fourth connecting portion 47 is folded back to form the second abutting portion 41. The bending directions of the second bending portion 42 and the fourth bending portion 46 are opposite to the bending directions of the third bending portion 44 and the second abutting portion 41. The bending angle of the second bending portion 42 is greater than the bending angle of the third bending portion 44. The three-stage bending (second / third / fourth bending section 46) forms a series elastic system, providing a longer elastic deformation space than single or double-stage bending. Each bending section can absorb external force in segments, avoiding stress concentration and achieving a progressive buffering effect similar to a "spring array," preventing plastic deformation caused by instantaneous impact. Furthermore, the multi-stage bending structure disperses stress to different sections, significantly reducing the fatigue risk of a single bending point and improving its service life.

[0043] like Figure 3 As shown, a second cutout 15 is provided at the lower end of the terminal body 1. One end of the third elastic arm 5 is connected to the terminal body 1. The third elastic arm 5 is inclined so that the other end of the third elastic arm 5 is inclined toward the insertion cavity 12, and a third abutment portion 51 is formed on the third elastic arm 5. Specifically, the third elastic arm 5 includes a fifth connecting portion 52 connected to the terminal body 1, a fifth bending portion 53 connected to the fifth connecting portion 52, a sixth connecting portion 54 connected to the fifth bending portion 53, a seventh bending portion 55 connected to the sixth connecting portion 54, and an eighth connecting portion 56 connected to the seventh bending portion 55. The other end of the eighth connecting portion 56 away from the seventh bending portion 55 is folded back to form the aforementioned third abutment portion 51. This creates a three-level elastic deformation synergy. The fifth bend 53 bears the initial insertion and extraction deformation, the seventh bend 55 provides intermediate rigid support, and the third abutment part 51 has high rigidity in the final contact area, stabilizing the contact pressure. Each bend can absorb external force in segments, avoiding stress concentration and achieving a gradual buffering effect similar to a "spring array", preventing plastic deformation caused by instantaneous impact.

[0044] like Figure 4 As shown, the first abutting part 31, the second abutting part 41 and the third abutting part 51 form a clamping area 121 around the axis of the insertion cavity 12;

[0045] The terminal body 1 also has an upwardly protruding mounting and positioning part 16 on its rear side, and a downwardly bent snap-fit ​​arm 17 on its lower side, such as... Figure 5 As shown, the assembly positioning part 16 can facilitate positioning and avoid excessive insertion that may affect assembly, while the snap-fit ​​arm 17 can prevent the terminal from dislodging, making the assembly more stable and less prone to falling off.

[0046] The terminal body 1 has a wire pressing part 18 at its rear end. The wire pressing part 18 includes a first wire pressing position 181 and a second wire pressing position 182 that are spaced apart from each other. A first wire pressing arm 183 and a second wire pressing arm 184 are respectively provided on both sides of the first wire pressing position 181 and the second wire pressing position 182.

[0047] During assembly, such as Figure 5 As shown, the present invention is directly inserted from the rear of the mounting cavity 61 of the connector 6. The assembly positioning part 16 abuts against the rear wall of the mounting cavity 61, and the snap-fit ​​arm 17 abuts against the wall in the middle of the mounting cavity 61. This achieves abutment positioning and fixation of the present invention from two directions. In use, the mating conductive part 2 is directly inserted into the insertion cavity 12, and the first abutment part 31, the second abutment part 41 and the third abutment part 51 abut against and clamp the mating conductive part 2 from four directions: up, down and left and right.

[0048] 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, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A terminal for improving contact performance, characterized in that, include: Terminal body (1), wherein the terminal body (1) is provided with a plug cavity (12); Two sets of first elastic arms (3), the terminal body (1) has first hollow positions (14) on both sides, the two sets of first elastic arms (3) are symmetrically arranged on both sides of the terminal body (1), the end of the first elastic arm (3) is connected to the terminal body (1), its front end extends obliquely from the first hollow position (14) into the insertion cavity (12), and the front end of the first elastic arm (3) is folded back to form a first abutting part (31); Two sets of second elastic arms (4), one end of the two sets of second elastic arms (4) is connected to the top of the terminal body (1), and a multi-level bending elastic structure is provided on the second elastic arm (4) so ​​that the other end of the second elastic arm (4) is inclined toward the insertion cavity (12). The second elastic arm (4) is provided with a second abutment part (41). The third elastic arm (5) has a second hollowed-out position (15) at the lower end of the terminal body (1). One end of the third elastic arm (5) is connected to the terminal body (1). The third elastic arm (5) is inclined so that the other end of the third elastic arm (5) is inclined toward the insertion cavity (12) and a third abutment part (51) is formed on the third elastic arm (5). The first abutting part (31), the second abutting part (41) and the third abutting part form a clamping area (121) around the axis of the insertion cavity (12); The terminal body (1) has a wire clamping part (18) at its rear end.

2. The terminal for improving contact performance according to claim 1, characterized in that, The first elastic arm (3) includes a first connecting portion (32) connected to the terminal body (1), the first connecting portion (32) is connected to a first bending portion (33), the first bending portion (33) is connected to a first inclined portion (34), the other end of the first inclined portion (34) away from the first bending portion (33) is folded back to form the aforementioned first abutting portion (31), and the first abutting portion (31) is also connected to a guide portion (35).

3. A terminal for improving contact performance according to claim 2, characterized in that, The first elastic arm (3) is also provided with a first reinforcing rib (36), which is continuously provided on the first connecting part (32), the first bending part (33) and the first inclined part (34).

4. A terminal for improving contact performance according to claim 3, characterized in that, The first reinforcing rib (36) has an inward concave structure.

5. A terminal for improving contact performance according to claim 1, characterized in that, The multi-stage bending elastic structure includes a second bending portion (42) connected to the terminal body (1), a second connecting portion (43) connected to the second bending portion (42), a third bending portion (44) connected to the second connecting portion (43), a third connecting portion (45) connected to the third bending portion (44), a fourth bending portion (46) connected to the third connecting portion (45), and a fourth connecting portion (47) connected to the fourth bending portion (46). The fourth connecting portion (47) is folded back to form the aforementioned second abutment portion (41).

6. A terminal for improving contact performance according to claim 5, characterized in that, The bending directions of the second bending portion (42) and the fourth bending portion (46) are opposite to the bending directions of the third bending portion (44) and the second abutting portion (41).

7. A terminal for improving contact performance according to claim 5, characterized in that, The bending angle of the second bending portion (42) is greater than the bending angle of the third bending portion (44).

8. A terminal for improving contact performance according to claim 1, characterized in that, The third elastic arm (5) includes a fifth connecting part (52) connected to the terminal body (1), a fifth bending part (53) connected to the fifth connecting part (52), a sixth connecting part (54) connected to the fifth bending part (53), a seventh bending part (55) connected to the sixth connecting part (54), and an eighth connecting part (56) connected to the seventh bending part (55). The other end of the eighth connecting part (56) away from the seventh bending part (55) is folded back to form the aforementioned third abutment part (51).

9. A terminal for improving contact performance according to claim 1, characterized in that, The terminal body (1) is also provided with an upwardly protruding assembly positioning part (16) on the rear side, and a downwardly bent snap-fit ​​arm (17) is provided on the lower side of the terminal body (1).

10. A terminal for improving contact performance according to claim 9, characterized in that, The pressure part (18) includes a first pressure position (181) and a second pressure position (182) arranged at intervals. A first pressure arm (183) and a second pressure arm (184) are respectively arranged on both sides of the first pressure position (181) and the second pressure position (182).

Images