Connector torsion spring

Abstract

The utility model relates to the technical field of connectors, in particular to a connector torsion spring which comprises a reed body with two open ends and a cylindrical structure, end pieces are arranged at the two ends of the reed body, a plurality of elastic pieces arranged at intervals are connected between the two end pieces, and the elastic pieces twist in the same direction in the circumferential direction. The middle part of each elastic sheet is provided with a contact part used for abutting against a connector pin, and the width of the contact part is larger than the width of the two ends of the elastic sheet. According to the torsion spring of the connector provided by the utility model, the width of the contact part is large, so that the contact area with a pin is increased, the contact reliability is improved, and the structure ensures that a larger current is borne and the plugging force is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector torsion spring. Background Art

[0002] Connector torsion springs are conductive contact terminals used to connect to pins in electrical connectors. Due to their many advantages, they are widely used to transmit high-current power supply systems, and are especially used in power supply systems for new energy vehicles. The electrical connectors in new energy vehicles are the signal transmission nerves of the vehicle wiring harness, and the crown spring terminals in the connectors play an important role. The middle part of the torsion spring in the prior art contacts the pin, playing the role of conducting the circuit. Its contact area is small, resulting in a large contact resistance, and the contact points are generally concentrated in the middle of the cylinder, so there are fewer contact points and the insertion and removal force is large, which cannot meet the increasingly high requirements for contact resistance and insertion and removal force in large current transmission in automobiles. Therefore, in order to solve the problems of poor tensile strength and conductivity of existing electrical connector contacts, it is necessary to provide a connector torsion spring with stable contact and excellent conductivity. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a connector torsion spring.

[0004] The purpose of the utility model can be achieved by the following technical solution: a connector torsion spring, comprising a spring body with two ends open and a cylindrical structure, end plates are provided at both ends of the spring body, a plurality of spaced spring plates are connected between the two end plates, and the spring plates are twisted in the same direction around the circumferential direction, and a contact portion for abutting against a connector pin is provided in the middle of each spring plate, and the width of the contact portion is greater than the width of the two ends of the spring plate.

[0005] Preferably, both side edges of the contact portion are respectively provided with a first protruding portion and a second protruding portion.

[0006] Preferably, both the first protrusion and the second protrusion are provided with rounded corners.

[0007] Preferably, the width L1 of the spring is 0.59 mm ± 0.05 mm.

[0008] Preferably, the width L2 of the contact portion is 1.01 mm±0.05 mm.

[0009] Preferably, the spacing distance L3 between adjacent contact portions is 0.32 mm ± 0.05 mm.

[0010] Preferably, the reed body is made of beryllium copper and has a nickel-plated surface.

[0011] The beneficial effects of the present invention are as follows: the connector torsion spring provided by the present invention, when the pin is inserted into the jack of the torsion spring, the pin contacts the middle part of the spring piece, the width of the contact part is large, so that the contact surface with the pin is increased, the spring piece tightly wraps the pin, thereby improving the contact reliability, and the structure ensures that it can carry a larger current and the plug-in and pull-out force is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a connector torsion spring of the utility model.

[0014] Figure 2 This is a schematic diagram of the expanded spring body of a connector torsion spring of the present invention.

[0015] Figure 3 This is a schematic diagram of the end face of a connector torsion spring of the present utility model.

[0016] Figure 4 for Figure 2 A partial enlarged view of point A in the middle.

[0017] Figure 5 This is another structural schematic diagram of a connector torsion spring of the present utility model.

[0018] The reference numerals shown in the figure indicate: 1, end piece; 2, spring piece; 3, contact portion; 31, first protruding portion; 32, second protruding portion. DETAILED DESCRIPTION

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] The following will be combined with specific embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] See Figures 1 to 5 As shown, the structure of the present invention is as follows: a connector torsion spring, comprising a cylindrical spring body with open ends, end pieces 1 provided at both ends of the spring body, a plurality of spaced spring pieces 2 connected between the end pieces 1, and the spring pieces 2 twisting in the same direction around the circumference. The middle portion of each spring piece 2 is provided with a contact portion 3 for abutting against a connector pin, and the width of the contact portion 3 is greater than the width of the ends of the spring piece 2. Specifically, when a connector pin is inserted into the receptacle of the torsion spring, the pin contacts the middle portion of the spring piece 2. The wide contact portion 3 increases the contact surface with the pin, allowing the spring piece to tightly wrap around the pin, improving contact reliability. The structure ensures that it can carry a higher current and more stable insertion and removal forces.

[0023] like Figure 2 、 Figure 4 As shown, the edges of both sides of the contact portion 3 are respectively provided with a first protrusion 31 and a second protrusion 32, so that the contact portion 3 forms a parallelogram structure. By designing the first protrusion 31 and the second protrusion 32 on the contact portion 3, the first protrusion 31 and the second protrusion 32 form a larger contact area after twisting, which is beneficial to increase the contact area with the pin. Compared with the existing torsion spring, the connector torsion spring provided by the utility model has a larger contact area regardless of forward and reverse twisting, which will better ensure the insertion and extraction force, and adjacent spring pieces will not interfere with each other during twisting.

[0024] Furthermore, the first protrusion 31 and the second protrusion 32 are both provided with rounded corners to prevent the spring 2 from scratching the pin after being twisted.

[0025] Furthermore, the width L1 of the spring piece 2 is 0.59 mm±0.05 mm.

[0026] Furthermore, the width L2 of the contact portion 3 is 1.01 mm±0.05 mm.

[0027] Furthermore, the spacing distance L3 between adjacent contact portions 3 is 0.32 mm±0.05 mm.

[0028] Furthermore, the reed body is made of beryllium copper and nickel-plated. Beryllium copper has high strength and hardness, high elasticity, low hysteresis, corrosion resistance, and good thermal and electrical conductivity. Nickel plating enhances wear resistance, making it more durable during use. In addition, nickel plating can also improve the appearance and texture of the product to a certain extent.

[0029] For specific use, refer to Figure 2 As shown, the raw material is punched out into a spring body of corresponding length through a stamping die, and then rolled into a cylindrical structure that matches the diameter of the pin (reference Figure 5 As shown), the cylindrical spring body is twisted to make the spring 2 twist in the same direction around the circumference (refer to Figure 1 As shown in the figure, the prepared torsion spring is then installed in the female end of the connector. When the connector pin is inserted into the jack of the torsion spring, the pin contacts the middle of the spring piece 2. The wide contact portion 3 increases the contact surface with the pin, and the spring piece 2 tightly wraps the pin, improving contact reliability. The structure ensures that it can carry a larger current and a more stable insertion and extraction force.

[0030] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A connector torsion spring, characterized in that: The invention comprises a spring body with two ends open and a cylindrical structure, wherein end pieces (1) are provided at both ends of the spring body, a plurality of spaced spring pieces (2) are connected between the two end pieces (1), and the spring pieces (2) are twisted in the same direction around the circumference, and a contact portion (3) for contacting with a connector pin is provided in the middle of each spring piece (2), and the width of the contact portion (3) is greater than the width of the two ends of the spring piece (2).

2. A connector torsion spring according to claim 1, characterized in that: The two side edges of the contact portion (3) are respectively provided with a first protruding portion (31) and a second protruding portion (32).

3. A connector torsion spring according to claim 2, characterized in that: The first protrusion (31) and the second protrusion (32) are both provided with rounded corners.

4. The connector torsion spring according to claim 1, characterized in that: The width L1 of the spring (2) is 0.59 mm ± 0.05 mm.

5. The connector torsion spring according to claim 1, characterized in that: The width L2 of the contact portion (3) is 1.01 mm ± 0.05 mm.

6. The connector torsion spring according to claim 1, characterized in that: The spacing distance L3 between adjacent contact portions (3) is 0.32 mm ± 0.05 mm.

7. The connector torsion spring according to claim 1, characterized in that: The reed body is made of beryllium copper and has a nickel-plated surface.

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