Multi-surface contact connector terminal

Abstract

The utility model discloses a multi-surface contact connector terminal, which comprises a terminal body, two sides of the front end of the terminal body are reversely folded upwards to form a first vertical part and a second vertical part, and the top of the first vertical part is reversely folded to form a first transverse part; the first vertical part is provided with a first hollow position, the first hollow position is provided with a first elastic arm, the rear end of the second vertical part extends to form a second elastic arm, the first transverse part is provided with a third elastic arm bent towards the plugging cavity, and the terminal body is provided with a fourth elastic arm bent towards the plugging cavity. The third elastic arm and the fourth elastic arm are respectively arranged at the upper end and the lower end of the first elastic arm and the second elastic arm and are staggered front and back; the rear end of the terminal body is provided with a wire pressing part. According to the utility model, the contact performance of the elastic arm to the matched terminal can be effectively improved, the elastic arm is not easy to fall off, and the stability of terminal connection is improved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector terminal with multi-faceted contact. Background Technology

[0002] As a core component for signal transmission and power conduction in electronic devices, the quality of the connector terminals' contact surfaces directly affects the reliability and stability of electrical connections. However, due to manufacturing, usage, and environmental factors, various defects often appear on the terminal contact surfaces. For example, connector terminals and mating terminals are not easily aligned during insertion and removal, which can easily cause collisions between the mating surfaces and lead to terminal damage. Furthermore, after repeated insertion and removal, the mating cavity can easily expand and be difficult to recover, affecting contact reliability. Vibration can also cause the terminal contact points to loosen, affecting the use of the equipment. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a multi-faceted contact connector terminal. It adopts four elastic arms and forms elastic bending abutment parts in four directions, which can effectively improve the contact performance of the elastic arms with the mating terminals, making them less prone to falling off and improving the stability of the terminal connection.

[0004] To achieve the above objectives, this utility model provides a multi-faceted contact connector terminal, comprising:

[0005] The terminal body has two front ends that are folded upwards to form a first vertical portion and a second vertical portion. The top of the first vertical portion is folded upwards to form a first horizontal portion. The side of the first horizontal portion away from the first vertical portion is placed directly above the second vertical portion. The terminal body, the first vertical portion, the second vertical portion, and the first horizontal portion form a plug-in cavity.

[0006] A first hollowed-out position is provided on the first vertical part, and a first elastic arm is provided on the first hollowed-out position. The rear end of the second vertical part extends to form a second elastic arm. The first elastic arm and the second elastic arm are inclined towards each other so that their ends are placed in the insertion cavity and are close to each other. A third elastic arm that bends into the insertion cavity is provided on the first horizontal part. A fourth elastic arm that bends into the insertion cavity is provided on the terminal body. The third elastic arm and the fourth elastic arm are respectively placed at the upper and lower ends of the first elastic arm and the second elastic part and are staggered in front and behind.

[0007] The terminal body has a wire clamping section at its rear end.

[0008] Furthermore, the first transverse portion is provided with a second hollow that communicates with the first hollow position, and the second elastic arm is disposed on the second hollow position. The design of the first and second hollow positions can reduce the rigidity of the elastic arm, making it easier to undergo elastic deformation during insertion and removal, thereby reducing the wear of the terminal or mating terminal by the contact pressure, while ensuring stable contact force; it can also disperse the stress concentration at the root connection of the elastic arm, avoid metal fatigue fracture caused by repeated insertion and removal, and extend the terminal life.

[0009] Furthermore, the first and second elastic arms are symmetrically arranged. The first elastic arm includes a first connecting portion and a first abutting portion connected in sequence, and the second elastic arm includes a second connecting portion and a second abutting portion connected in sequence. Both the first and second connecting portions are inclined towards the insertion cavity, so that the first and second abutting portions are placed inside the insertion cavity and are adjacent to each other. The symmetrical distribution of the first and second elastic arms ensures that the insertion and extraction forces are evenly distributed on both sides, avoiding contact misalignment or wear caused by excessive force on one side. This ensures that the contact point between the terminal and the mating terminal is always centered, effectively increasing the contact area between the abutting portion and the mating terminal. The double-bending structure increases the holding force of the first and second abutting portions on the mating terminal, thereby improving its stability. The first and second abutting portions are arranged adjacent to each other in the insertion cavity, forming a "double contact" structure. Even if one side has poor contact due to wear or contamination, the other side can still maintain a conductive path, improving reliability. The symmetrically inclined elastic arms generate complementary stress distribution during insertion and extraction, avoiding stress concentration at a single root and delaying metal fatigue fracture.

[0010] Furthermore, a first bend is provided between the first connecting portion and the first abutting portion, and a second bend is provided between the second connecting portion and the second abutting portion. The first abutting portion and the second abutting portion are arranged in a relatively parallel configuration. The first and second bends serve as deformation fulcrums of the elastic arm, converting the insertion and extraction force into controllable bending deformation (rather than rigid displacement), making the contact pressure of the abutting portion more uniform, avoiding plastic deformation caused by local overload, and extending the insertion and extraction life of the terminal. The two abutting portions are parallel and closely attached to the mating terminal, forming a double contact point. Even if one side has poor contact due to contamination or oxidation, the other side can still maintain a conductive path, reducing contact resistance fluctuations. The bends allow the elastic arm to finely adjust the angle during insertion and extraction, ensuring that the abutting portion always maintains the maximum contact area with the surface of the mating terminal, guaranteeing contact stability.

[0011] Furthermore, the ends of the third and fourth elastic arms are folded back to form a third abutment portion and a fourth abutment portion, respectively. The third and fourth abutment portions are positioned on the upper and lower sides of the first and second elastic portions, respectively, and are staggered front to back. The arrangement of the third and fourth abutment portions, together with the first and second abutment portions, forms four contact points on the mating terminals (up, down, left, and right), maintaining a conductive path in multiple directions and improving reliability. The four-directional contact generates complementary stress distribution during insertion and removal, preventing stress concentration at a single root and delaying metal fatigue fracture. In particular, the staggered structure of the third and fourth abutment portions creates a staggered clamping force on the mating terminals, further improving the stability of the mating terminals and reducing the risk of them falling off under stress.

[0012] Furthermore, the third and fourth abutment portions are bent in opposite directions. This arrangement ensures that the bending direction of the third and fourth abutment portions faces the insertion cavity, thereby increasing the clamping force on the mating terminals, improving connection stability, and preventing detachment.

[0013] Furthermore, an upwardly bent positioning arm is provided at the end of the first transverse portion. The positioning arm enables rapid installation and positioning, improving assembly efficiency.

[0014] Furthermore, the front end of the terminal body forms an inclined guide portion. This guide portion facilitates insertion into the connector housing for assembly, reduces the probability of collision between the front end of the terminal body and the connector housing, and improves assembly efficiency and product quality.

[0015] Furthermore, the wire clamping section includes a first wire clamping position and a second wire clamping position arranged at intervals, with a first wire clamping arm and a second wire clamping arm respectively provided on both sides of the first and second wire clamping positions. This creates two wire clamping positions, improving the stability of the wire and terminal after welding and preventing detachment due to vibration or other factors, thus making the connection between the wire and the terminal more secure.

[0016] Furthermore, the length of the first clamping arm is shorter than the length of the second clamping arm. This allows for fixing the wire at different positions, improving its stability.

[0017] Compared with the prior art, this utility model has the following advantages: By setting a first elastic arm, a second elastic arm, a third elastic arm, and a fourth elastic arm, this utility model can clamp and lock the mating terminals with a four-point structure in all directions, maintaining the conductive path in multiple directions and improving reliability; moreover, 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; in particular, the third and fourth abutting parts adopt a staggered arrangement, which can form a staggered relative clamping force on the mating terminals, further improving the stability of the mating terminals and reducing the risk of the mating terminals falling off due to external force vibration. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the structure of a multi-faceted contact connector terminal according to this utility model;

[0020] Figure 2 yes Figure 1 Another perspective illustration;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a schematic diagram of the assembly of this utility model with the connector housing.

[0023] The diagram includes:

[0024] 1. Terminal body; 11. Arc structure; 12. Fourth elastic arm; 121. Fourth abutment part; 13. Guide part; 14. Wire pressing part; 141. First wire pressing position; 142. Second wire pressing position; 143. First wire pressing arm; 144. Second wire pressing arm; 2. First vertical part; 21. First hollow position; 22. First elastic arm; 221. First connecting part; 222. First abutment part; 223. First bent part; 3. Second vertical part; 31. Second elastic arm; 311. Second connecting part; 312. Second abutment part; 313. Second bent part; 4. First horizontal part; 41. Third elastic arm; 411. Third abutment part; 42. Second hollow; 43. Positioning arm; 5. Insertion cavity; 6. Connector housing; 61. Mounting through groove. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Please see Figures 1 to 4 The present invention provides a multi-faceted contact connector terminal, including a terminal body 1;

[0029] like Figures 1 to 3 As shown, in this embodiment, the front ends of the terminal body 1 are folded upwards on both sides to form a first vertical part 2 and a second vertical part 3. The top of the first vertical part 2 is folded upwards to form a first horizontal part 4. The other side of the first horizontal part 4 away from the first vertical part 2 is placed directly above the second vertical part 3. The terminal body 1, the first vertical part 2, the second vertical part 3, and the first horizontal part 4 form a insertion cavity 5. As shown in the figure, the bends between the terminal body and the first vertical part 2, the bends between the first vertical part 2 and the first horizontal part 4, and the bends between the terminal body and the second vertical part 3 are all set as arc structures 11. By setting the bends as arc structures 11, the terminal body 1 will not collide with the inner wall of the connector housing 6 when it is inserted into the connector housing 6, and a certain gap can be formed. During insertion and removal, a certain amount of micro-deformation space can be increased to offset the instantaneous stress, protect the metal fatigue of the terminal body 1, and improve its service life.

[0030] A first hollowed-out position 21 is provided on the first vertical part 2, and a first elastic arm 22 is provided on the first hollowed-out position 21. The rear end of the second vertical part 3 extends to form a second elastic arm 31. The first elastic arm 22 and the second elastic arm 31 are inclined towards each other, so that their ends are placed in the insertion cavity 5 and are close to each other. Specifically, with the extended axis of the insertion cavity 5 as a reference, the first elastic arm 22 and the second elastic arm 31 are symmetrically arranged on both sides of the extended axis. The first elastic arm 22 includes a first connecting part 221 and a first abutting part 222 connected in sequence, and the second elastic arm 31 includes a second connecting part 311 and a second abutting part 312 connected in sequence. The first connecting part 221 and the second connecting part 311 are both inclined towards the insertion cavity 5, so that the first abutting part 222 and the second abutting part 312 are placed in the insertion cavity 5 and are close to each other. Furthermore, in this In this embodiment, a first bending portion 223 is provided between the first connecting portion 221 and the first abutting portion 222, and a second bending portion 313 is provided between the second connecting portion 311 and the second abutting portion 312. The first abutting portion 222 and the second abutting portion are arranged in a relatively parallel manner. As a result, the first elastic arm 22 and the second elastic arm 31 are symmetrically distributed, so that the insertion and extraction force is evenly distributed on both sides, avoiding contact misalignment or wear caused by excessive force on one side. At the same time, the arrangement of the first bending portion 223 and the second bending portion 313 makes the first abutting portion 222 and the second abutting portion 312 parallel to each other, ensuring that the contact point between the terminal and the mating terminal is always centered. This can effectively increase the contact area between the abutting portion and the mating terminal, and the double bending structure can increase the holding force of the first abutting portion 222 and the second abutting portion 312 on the mating terminal, thereby improving its stability.

[0031] A third elastic arm 41 bent toward the insertion cavity 5 is provided in the first transverse portion 4, and a fourth elastic arm 12 bent toward the insertion cavity 5 is provided in the terminal body 1. The third elastic arm 41 and the fourth elastic arm 12 are respectively located at the upper and lower ends of the first elastic arm 22 and the second elastic portion and are staggered in front and behind. In this embodiment, preferably, the ends of the third elastic arm 41 and the fourth elastic arm 12 are folded back to form a third abutment portion 411 and a fourth abutment portion 121, respectively. The third abutment portion 411 and the fourth abutment portion 121 are respectively located on the upper and lower sides of the first elastic portion and the second elastic portion, and the third abutment portion 411 and the fourth abutment portion 121 are staggered in front and behind, wherein the folding of the third abutment portion 411 and the fourth abutment portion 121 is opposite to each other. Figure 3 As shown, the bending position of the third abutment portion 411 is downward and the bending position of the fourth abutment portion 121 is upward. This allows the bending portions of the third abutment portion 411 and the fourth abutment portion 121 to face the insertion cavity 5, thereby increasing the clamping force on the mating terminals, improving the stability of the connection, and making it less likely to fall off.

[0032] Furthermore, the first transverse portion 4 is provided with a second hollow 42 communicating with the first hollow position 21, and the third elastic arm 41 is disposed in the second hollow 42. The second elastic arm 31 extends from the second vertical portion 3, thus it is also in a suspended state with hollowed-out edges. This hollowed-out design reduces the rigidity of the elastic arm, making it easier to undergo elastic deformation during insertion and removal, thereby reducing the wear of the terminal or mating terminal by contact pressure, while ensuring stable contact force. It also disperses stress concentration at the root connection of the elastic arm, avoiding metal fatigue fracture caused by repeated insertion and removal, and extending the terminal life.

[0033] In this embodiment, to facilitate assembly and positioning with the connector housing, an upwardly bent positioning arm 43 is provided at the end of the first transverse portion 4. The positioning arm 43 enables rapid installation and positioning, improving assembly efficiency.

[0034] The front end of the terminal body 1 is provided with an inclined guide portion 13, which facilitates insertion into the connector housing 6 for assembly, reduces the probability of collision between the front end of the terminal body 1 and the connector housing 6, and improves assembly efficiency and finished product quality.

[0035] To secure the wire, a wire clamping portion 14 is provided at the rear end of the terminal body 1. The wire clamping portion 14 includes a first wire clamping position 141 and a second wire clamping position 142 spaced apart. A first wire clamping arm 143 and a second wire clamping arm 144 are respectively provided on both sides of the first wire clamping position 141 and the second wire clamping position 142. The length of the first wire clamping arm 143 is shorter than the length of the second wire clamping arm 144. This creates two wire clamping positions, improving the stability of the wire after welding to the terminal and preventing it from easily falling off due to vibration or other factors, thus making the connection between the wire and the terminal more secure.

[0036] The working principle of this utility model can be briefly described as follows: Figure 4As shown, multiple mounting slots 61 for accommodating terminal bodies 1 are provided on the connector housing. During assembly, the wires are first welded to the terminal bodies 1 for fixation. Then, the first crimping arm 143 and the second crimping arm 144 are folded in sequence to tightly wrap around different positions of the wires, achieving secondary fixation of the wires. Then, the guide part 13 is aligned with the rear opening of the mounting slot 61 and directly inserted into the interface. The guide part 13 is inclined, meaning that the diameter of the guide part 13 gradually increases from the outside to the inside. This makes the diameter of the guide part 13 smaller than the rear opening of the mounting slot 61, allowing for easy insertion and avoiding collision between the guide part 13 and the inner wall of the rear opening, ensuring the stability of the terminal body 1 structure. After the terminal body 1 is inserted, the upwardly bent positioning arm 43 will abut and position against the connector housing 6, preventing the terminal body 1 from falling out of the rear opening. In use, simply insert the guide part 13 into the connector housing 6. When the mating terminal is inserted into the insertion cavity 5, the first elastic arm 22 and the second elastic arm 31 clamp the left and right sides of the mating terminal under their own elasticity. The first abutment part 222 and the second abutment part 312 will completely and tightly abut against the left and right end faces of the mating terminal to achieve good contact. The third elastic arm 41 and the fourth elastic arm 12 will apply vertical clamping force to the mating terminal, especially forming a staggered clamping in front and behind, which makes the clamping of the mating terminal more stable. This four-contact staggered clamping structure has good clamping performance. It will not come off when subjected to vibration or the contact points of the terminal will not be affected, and it will not affect the use of the equipment. Moreover, the contact in the four directions, together with the inclined connecting parts and bending parts set in each elastic arm, can generate complementary stress distribution during insertion and removal, avoid stress concentration in a single root, and delay metal fatigue fracture.

[0037] 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 multi-faceted contact connector terminal characterized by, The utility model relates to a terminal body (1) is provided with the first vertical part (2) and the second vertical part (3) of the upper folding of the front end both sides of terminal body (1), the top folding of the first vertical part (2) forms the first horizontal part (4), and the first horizontal part (4) is placed in the direct overhead of the other side of first vertical part (2) away from the second vertical part (3), and terminal body (1), first vertical part (2), second vertical part (3) and first horizontal part (4) form the plug-in cavity (5); The first hollow position (21) is arranged on the first vertical part (2), and the first elastic arm (22) is arranged on the first hollow position (21), the rear end of the second vertical part (3) extends to form the second elastic arm (31), the first elastic arm (22) and the second elastic arm (31) are opposite to each other and are inclined, and the ends of the first elastic arm (22) and the second elastic arm (31) are placed in the plug-in cavity (5) and are adjacent to each other, the third elastic arm (41) is arranged on the first horizontal part (4) and is bent towards the plug-in cavity (5), the fourth elastic arm (12) is arranged on the terminal body (1) and is bent towards the plug-in cavity (5), and the third elastic arm (41) and the fourth elastic arm (12) are respectively arranged on the upper and lower ends of the first elastic arm (22) and the second elastic arm (31) and are arranged in a front-rear staggered manner. The rear end of the terminal body (1) is provided with a wire pressing portion (14). The first horizontal part (4) is provided with a second hollow (42) in communication with the first hollow position (21), and the second elastic arm (31) is arranged on the second hollow (42).

2. A multi-faceted contact connector terminal according to claim 1, wherein, The first elastic arm (22) and the second elastic arm (31) are arranged in a symmetrical manner, the first elastic arm (22) comprises a first connecting portion (221) and a first abutting portion (222) connected in sequence, the second elastic arm (31) comprises a second connecting portion (311) and a second abutting portion (312) connected in sequence, the first connecting portion (221) and the second connecting portion (311) are inclined towards the plug-in cavity (5), so that the first abutting portion (222) and the second abutting portion (312) are placed in the plug-in cavity (5) and are adjacent to each other.

3. A multi-faceted contact connector terminal according to claim 1, wherein, A first bending portion (223) is arranged between the first connecting portion (221) and the first abutting portion (222), a second bending portion (313) is arranged between the second connecting portion (311) and the second abutting portion (312), and the first abutting portion (222) and the second abutting portion (312) are arranged in a parallel manner.

4. A multi-faceted contact connector terminal according to claim 3, wherein, The ends of the third elastic arm (41) and the fourth elastic arm (12) are respectively folded to form a third abutting portion (411) and a fourth abutting portion (121), the third abutting portion (411) and the fourth abutting portion (121) are respectively arranged on the upper and lower sides of the first elastic portion and the second elastic portion, and the third abutting portion (411) and the fourth abutting portion (121) are arranged in a front-rear staggered manner.

5. A multi-faceted contact connector terminal according to claim 3, wherein, The folding directions of the third abutting portion (411) and the fourth abutting portion (121) are opposite to each other.

6. A multi-faceted contact connector terminal according to claim 5, wherein, The end of the first horizontal part (4) is provided with a positioning arm (43) bent upwards.

7. A multi-faceted contact connector terminal according to claim 1, wherein The front end of the terminal body (1) forms an inclined guide portion (13).

8. A multi-faceted contact connector terminal according to claim 1, wherein, ​ 9. A multi-faceted contact connector terminal according to Claim 1, wherein, The wire pressing part (14) comprises a first wire pressing position (141) and a second wire pressing position (142) arranged at intervals in front and back, and a first wire pressing arm (143) and a second wire pressing arm (144) are arranged on both sides of the first wire pressing position (141) and the second wire pressing position (142) respectively.

10. A multi-faceted contact connector terminal according to claim 9, wherein, The length of the first wire pressing arm (143) is less than the length of the second wire pressing arm (144).

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