A connector terminal

Abstract

The utility model belongs to the technical field of connector, specifically speaking is a kind of connector terminal, including male terminal and female terminal, and female terminal is equipped with the plug-in end, its inside has clamping contact part, and clamping contact part includes the first electric contact point and the second electric contact point of swingable with male terminal plug-in part contact, and the inclined surface of oblique arrangement, first elbow, second elbow, first energy storage deformation part and second energy storage deformation part, and the boss is equipped in plug-in end inner wall, when male terminal is inserted, the inclined surface is pressed and drives first elbow to swing with boss as fulcrum, makes the second electric contact point of second elbow end pass through inclined surface through -hole and abuts with plug-in part, forms double-point contact, the utility model is designed through swing contact and double energy storage deformation part, increases contact area and pressure, reduces contact resistance, improves the conductivity stability, the anti-vibration and the plug-in life, especially suitable for the harsh working condition of high vibration, high current load.

Description

Technical Field

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

[0002] Connector terminals, as core components of electrical connection systems, are widely used in automotive, industrial control, communication equipment, and consumer electronics. Their core function is to achieve stable and reliable mechanical locking and electrical signal transmission between male and female terminals. Male terminals typically include a plug and a wire harness connection end, while female terminals have corresponding plug cavities and wire harness interfaces. The two achieve circuit conduction through mating. Under conditions of high vibration, high current load, and frequent plugging and unplugging, the stability, conductivity, and plugging / unplugging life of the terminal connection directly affect the performance and safety of the entire electrical system. Therefore, connector terminals not only need to ensure sufficient contact pressure to reduce contact resistance, but also need to have good vibration resistance, size adaptability, and durability to meet the increasingly demanding requirements of industrial applications.

[0003] Current connector terminals have the following drawbacks: In automotive electronics, industrial equipment, and other fields, electrical connections between male and female terminals often employ simple elastic clips or single-point contact structures. A single contact point or surface is prone to increased contact resistance due to fretting under long-term vibration, severely affecting the stability and safety of signal and current transmission. Furthermore, to achieve sufficient contact force, a large insertion and extraction force is often required, which not only increases the difficulty of connector mating but also exacerbates mechanical wear of the terminals. Therefore, connector terminals struggle to simultaneously meet the requirements of low contact resistance, high vibration resistance, long lifespan, and ease of operation in applications with frequent vibration, frequent insertion and extraction, and high requirements for current transmission stability. Therefore, this paper proposes a new type of connector terminal to address these issues. Utility Model Content

[0004] To overcome the shortcomings of existing connector terminals, a new type of connector terminal is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is: the connector terminal of this utility model includes a male terminal and a female terminal. The female terminal includes a first wire harness connection end for connecting with an external wire harness and a plug-in end for plugging into the male terminal. The plug-in end is provided with a clamping contact part for electrically connecting and fixing the plug-in part of the male terminal to the plug-in end. The clamping contact portion includes a first energy storage deformation portion and a second energy storage deformation portion. One end of the first energy storage deformation portion is connected to the plug-in end, and the other end extends inclinedly into the plug-in end and is connected to a slope. The other end of the slope is connected to one end of the second energy storage deformation portion. The other end of the second energy storage deformation portion is connected to a first crank arm that extends inclinedly into the plug-in end inlet. The other end of the first crank arm is connected to a second crank arm that bends towards the slope. A second electrical contact point is provided at one end of the second crank arm near the slope. A through hole is provided on the slope for the second electrical contact point to pass through. A first electrical contact point is formed on the second energy storage deformation portion near the inner wall of the plug-in end. When the plug portion on the male terminal is inserted into the plug terminal, the first energy storage deformation portion and the second energy storage deformation portion deform and contract, the inclined plane rotates in the opposite direction of its inclination direction, the plug portion contacts and abuts against the first electrical contact point, and the first crank arm rotates towards the inclined plane, so that the second electrical contact point passes through the through hole and contacts and abuts against the plug portion, so that the clamping contact portion provides a clamping force that can clamp the plug portion in the plug terminal to form a multi-point electrical connection and clamping force.

[0006] Preferably, a protrusion is provided on the inner wall of the plug-in end opposite to the first electrical contact point. When the plug-in part is inserted into the plug-in end, the protrusion increases the rotation stroke of the inclined surface and increases the compression of the first energy storage deformation part, thereby increasing the contact pressure between the first electrical contact point and the plug-in part.

[0007] Preferably, a boss is provided on the inner wall of the plug-in end opposite to the first crank arm. When the plug-in part is inserted into the plug-in end and the inclined surface is pressed to rotate around the first energy storage deformation part, the first crank arm abuts against the boss. The boss increases the rotation stroke of the first crank arm, thereby increasing the contact pressure between the second electrical contact point and the plug-in part.

[0008] Preferably, the length between the contact point between the boss and the first crank arm and the second energy storage deformation part is a, where a is the lever arm that drives the second electrical contact point to contact the plug-in part, and the length a is four-fifths of the length of the first crank arm.

[0009] Preferably, the first wire harness connection end on the female terminal includes at least one first wire harness fixing lug and its inner wall is provided with a protruding rib.

[0010] Preferably, the male terminal is further provided with a second wire harness connection end, the second wire harness connection end including at least one second wire harness fixing ear and having a protruding rib on its inner wall.

[0011] The beneficial effects of this utility model are: This invention provides a connector terminal. Through a structure consisting of a beveled surface, a crank arm, and a dual energy storage deformation section for clamping the contact portion, when the male terminal is inserted, the beveled surface is pressed, causing the first crank arm to swing around the boss as a fulcrum. This causes the second electrical contact point at the end of the second crank arm to actively swing and pass through the through hole to abut against the insertion portion, forming a multi-point contact that works in conjunction with the first electrical contact point. This increases the effective contact area and contact pressure, reduces contact resistance, and improves conductivity stability and current carrying capacity. The dual energy storage deformation section not only provides the driving force for the swing of the second electrical contact point and stores energy, but also gives the terminal excellent elastic compensation capabilities, enabling it to adapt to the dimensional tolerances of the insertion portion and maintain stable contact in a vibration environment. The structure of lever arm a ensures efficient lever transmission, achieving reliable contact with a smaller insertion and extraction force, thus improving the terminal's insertion and extraction life and mechanical durability. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of the structure of the present invention after the male terminal and the female terminal are connected; Figure 2 This is a cross-sectional view of the female terminal of this utility model; Legend: 1. Male terminal; 101. Plug-in portion; 102. Second wire harness connection end; 1021. Second wire harness fixing ear; 2. Female terminal; 3. First wire harness connection end; 301. First wire harness fixing ear; 4. Plug-in end; 5. Clamping contact portion; 501. First electrical contact point; 502. Second electrical contact point; 503. Inclined surface; 504. First crank arm; 505. Second crank arm; 506. Through hole; 507. First energy storage deformation portion; 508. Second energy storage deformation portion; 6. Protrusion; 7. Boss. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] Specific implementation examples are given below.

[0015] Please see Figures 1-2The connector terminal of this utility model includes a male terminal 1 and a female terminal 2. The female terminal 2 includes a first wire harness connection end 3 for connecting with an external wire harness and a plug-in end 4 for plugging into the male terminal 1. The plug-in end 4 is provided with a clamping contact part 5 for electrically connecting and fixing the plug-in part 101 of the male terminal 1 to the plug-in end 4. The clamping contact portion 5 includes a first energy storage deformation portion 507 and a second energy storage deformation portion 508. One end of the first energy storage deformation portion 507 is connected to the plug-in end 4, and the other end extends obliquely into the plug-in end 4 and is connected to an inclined surface 503. The other end of the inclined surface 503 is connected to one end of the second energy storage deformation portion 508. The other end of the second energy storage deformation portion 508 is connected to a first crank arm 504 that extends obliquely into the entrance of the plug-in end 4. The other end of the first crank arm 504 is connected to a second crank arm 505 that bends toward the inclined surface 503. A second electrical contact point 502 is provided at one end of the second crank arm 505 near the inclined surface 503. A through hole 506 is provided on the inclined surface 503 for the second electrical contact point 502 to pass through. A first electrical contact point 501 is formed on the second energy storage deformation portion 508 near the inner wall of the plug-in end 4. When the plug portion 101 on the male terminal 1 is inserted into the plug terminal 4, the first energy storage deformation portion 507 and the second energy storage deformation portion 508 deform and contract, the inclined surface 503 rotates in the opposite direction of its inclination, the plug portion 101 contacts and abuts against the first electrical contact point 501, and the first crank arm 504 rotates towards the inclined surface 503, so that the second electrical contact point 502 passes through the through hole 506 and contacts and abuts against the plug portion 101, so that the clamping contact portion 5 provides a clamping force that can clamp the plug portion 101 in the plug terminal 4 to form a multi-point electrical connection; A boss 7 is provided on the inner wall of the plug end 4 opposite to the first crank arm 504. When the plug part 101 is inserted into the plug end 4 and the inclined surface 503 is pressed to make it rotate around the first energy storage deformation part 507, the first crank arm 504 abuts against the boss 7. The boss 7 increases the rotation stroke of the first crank arm 504, thereby increasing the contact pressure between the second electrical contact point 502 and the plug part 101. During operation, when the insertion portion 101 of the male terminal 1 is inserted into the insertion end 4 of the female terminal 2, the insertion portion 101 first contacts the inclined surface 503 of the clamping contact portion 5. Due to the inclined surface 503 being inclined, the insertion force of the insertion portion 101 compresses the inclined surface 503, causing it to swing around the first energy storage deformation portion 507. This results in the first energy storage deformation portion 507 being compressed and storing elastic potential energy. At the same time, the swing of the inclined surface 503 drives the first crank arm 504 to move towards the boss 7. After the first crank arm 504 abuts against the boss 7, it acts as a fulcrum, causing the second crank arm 505 to move towards the second energy storage deformation portion. 508 is a pivot point that swings, thereby driving the second electrical contact point 502 to pass through the through hole 506 on the inclined surface 503 and approach the plug-in part 101 and finally abut against the surface of the plug-in part 101. During this process, the first electrical contact point 501 always maintains contact with the plug-in part 101, while the swinging action of the second electrical contact point 502 ensures additional contact with the plug-in part 101, realizing two-point electrical connection. The deformation of the first energy storage deformation part 507 and the second energy storage deformation part 508 provides the necessary elasticity and restoring force to ensure tight contact and stability during the insertion and removal process.

[0016] By setting the first electrical contact point 501 and the second electrical contact point 502, and utilizing the cooperative action of the inclined surface 503, the first crank arm 504, the second crank arm 505, the first energy storage deformation part 507, and the second energy storage deformation part 508, reliable clamping and electrical connection of the plug part 101 are achieved. The swinging contact of the second electrical contact point 502 enhances the contact area and pressure, reduces contact resistance, and improves conductivity and signal transmission stability. The elastic design of the first energy storage deformation part 507 and the second energy storage deformation part 508 allows tolerance compensation, adapts to plug parts 101 of different sizes, and provides buffering during insertion and removal, extending the service life of the terminals. The boss 7, as a fulcrum, optimizes force transmission, making the movement of the second electrical contact point 502 more efficient and ensuring the reliability of the connector in a vibration environment.

[0017] Furthermore, a protrusion 6 is provided on the inner wall of the plug-in end 4 opposite to the first electrical contact point 501. When the plug-in part 101 is inserted into the plug-in end 4, the protrusion 6 increases the rotational stroke of the inclined surface 503 and increases the compression of the first energy storage deformation part 507, thereby increasing the contact pressure between the first electrical contact point 501 and the plug-in part 101. During operation, when the plug-in part 101 of the male terminal 1 is inserted into the plug-in end 4, the first electrical contact point 501 contacts the plug-in part 101, and the protrusion 6, as a supporting structure, applies a reverse force to the first electrical contact point 501, increasing the contact pressure of the first electrical contact point 501 on the plug-in part 101, ensuring the tightness of the electrical connection, enhancing the fixation and contact pressure of the first electrical contact point 501, preventing poor contact caused by vibration or insertion / extraction force, improving the reliability and safety of the connection, and the protrusion 6 increases the electrical connection points with the plug-in part 101, making the connection more stable through multi-point electrical connection.

[0018] Furthermore, the length between the contact point of the boss 7 and the first crank arm 504 and the second energy storage deformation part 508 is 'a', where 'a' is the lever arm that drives the second electrical contact point 502 to contact the plug-in part 101, and the length of 'a' is four-fifths of the length of the first crank arm 504. During operation, when the plug-in part 101 inserts into the plug-in end 4 and presses against the inclined surface 503, the first crank arm 504 swings with the boss 7 as the fulcrum. The length of lever arm 'a', being four-fifths of the length of the first crank arm 504, provides an optimized leverage ratio. This allows the swing of the first crank arm 504 to be efficiently transmitted to the second energy storage deformation part 508 through lever arm 'a', causing the second crank arm 505 to... Sufficient force and stroke drive the second electrical contact 502 to abut against the plug portion 101. During this process, the second energy storage deformation portion 508 deforms, storing and releasing energy to ensure that the contact action of the second electrical contact 502 is smooth and powerful. By setting the length of the lever arm a to four-fifths of the length of the first crank arm 504, a highly efficient leverage effect is achieved, generating a large contact force with a small input force. This improves the reliability and efficiency of the contact between the second electrical contact 502 and the plug portion 101, avoids insufficient contact, and enhances the mechanical and electrical performance of the terminal. At the same time, the lever arm a also reduces the insertion and extraction force, making the connector easier to operate.

[0019] Furthermore, the first wire harness connection end 3 on the female terminal 2 includes at least one first wire harness fixing ear 301 and its inner wall is provided with ribs; during operation, when the wire harness is inserted into the first wire harness connection end 3, the first wire harness fixing ear 301 fixes the outer sheath and conductor of the wire harness by crimping or riveting, while the ribs on the inner wall increase the friction and interlocking force with the surface of the wire harness, preventing the wire harness from loosening under tension or vibration. The ribs are sawtooth or wavy structures, embedded in the surface of the wire harness, providing mechanical locking and electrical contact.

[0020] Furthermore, the male terminal 1 is also provided with a second wire harness connection end 102. The second wire harness connection end 102 includes at least one second wire harness fixing ear 1021 and its inner wall is provided with a rib. During operation, when the wire harness is inserted into the second wire harness connection end 102, the second wire harness fixing ear 1021 fixes the wire harness by crimping, while the rib on the inner wall increases the friction and mechanical locking force with the wire harness, ensuring electrical connection and mechanical fixation between the wire harness and the male terminal 1. The design of the rib makes it difficult for the wire harness to loosen after insertion, and it can maintain stable connection even in high vibration environment.

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A connector terminal, comprising a male terminal (1) and a female terminal (2), characterized in that: The female terminal (2) includes a first wire harness connection end (3) for connecting with an external wire harness and a plug end (4) for plugging into the male terminal (1). The plug end (4) is provided with a clamping contact part (5) for electrically connecting and fixing the plug part (101) of the male terminal (1) to the plug end (4). The clamping contact part (5) includes a first energy storage deformation part (507) and a second energy storage deformation part (508). One end of the first energy storage deformation part (507) is connected to the plug-in end (4), and the other end extends obliquely into the plug-in end (4) and is connected to a slope (503). The other end of the slope (503) is connected to one end of the second energy storage deformation part (508), and the other end of the second energy storage deformation part (508) is connected to a first bend extending obliquely into the inlet of the plug-in end (4). The first crank arm (504) is connected to a second crank arm (505) that bends toward the inclined plane (503) at the other end. A second electrical contact point (502) is provided at one end of the second crank arm (505) near the inclined plane (503). A through hole (506) is provided on the inclined plane (503) for the second electrical contact point (502) to pass through. A first electrical contact point (501) is formed on the second energy storage deformation part (508) near the inner wall of the plug end (4). When the plug portion (101) on the male terminal (1) is inserted into the plug terminal (4), the first energy storage deformation portion (507) and the second energy storage deformation portion (508) deform and shrink, the inclined surface (503) rotates in the opposite direction of its inclined direction, the plug portion (101) contacts and abuts against the first electrical contact point (501), the first crank arm (504) rotates towards the inclined surface (503), so that the second electrical contact point (502) passes through the through hole (506) and contacts and abuts against the plug portion (101), so that the clamping contact portion (5) provides a clamping force that can clamp the plug portion (101) in the plug terminal (4) to form a multi-point electrical connection.

2. A connector terminal according to claim 1, characterized in that: A protrusion (6) is provided on the inner wall of the plug end (4) opposite to the first electrical contact point (501). When the plug part (101) is inserted into the plug end (4), the protrusion (6) increases the rotation stroke of the inclined surface (503) and increases the compression of the first energy storage deformation part (507), so as to increase the contact pressure between the first electrical contact point (501) and the plug part (101).

3. A connector terminal according to claim 1, characterized in that: A boss (7) is provided on the inner wall of the plug end (4) opposite to the first crank arm (504). When the plug part (101) is inserted into the plug end (4) and the pressing slope (503) is pressed to make it rotate around the first energy storage deformation part (507), the first crank arm (504) abuts against the boss (7). The boss (7) increases the rotation stroke of the first crank arm (504) so ​​as to increase the contact pressure between the second electrical contact point (502) and the plug part (101).

4. A connector terminal according to claim 3, characterized in that: The length between the contact point between the boss (7) and the first crank arm (504) and the second energy storage deformation part (508) is a, where a is the lever arm that drives the second electrical contact point (502) to contact the plug part (101), and the length of a is four-fifths of the length of the first crank arm (504).

5. A connector terminal according to claim 1, characterized in that: The first wire harness connection end (3) on the female terminal (2) includes at least one first wire harness fixing ear (301) and its inner wall is provided with a protruding rib.

6. A connector terminal according to claim 1, characterized in that: The male terminal (1) is also provided with a second wire harness connection terminal (102), the second wire harness connection terminal (102) includes at least one second wire harness fixing ear (1021) and its inner wall is provided with a protruding rib.

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