Locking and contact area increasing wire terminal, plug sleeve assembly and connecting device

Abstract

The utility model relates to the technical field of plug -in device, especially the wire terminal of preventing loosening and increasing contact area, plug -in sleeve subassembly and connecting device, the utility model discloses wire terminal is equipped with two clamps that keep apart in the one end of the body, and the upper end of clamp is equipped with the wavy bending area, and at least has two inner bending parts, so that the contact area of clamp and the contact area of the plug pin is increased from the original two points to at least two points or more, not only increase contact area, reduce contact resistance, reduce energy loss, and the wavy design can better adapt to the plug pin of different specifications and shapes, improve the versatility and compatibility of plug -in device.

Description

Technical Field

[0001] This utility model relates to the field of connection device technology, and in particular to a plug terminal, plug assembly and connection device that prevents loosening and increases the contact area. Background Technology

[0002] The internal terminals of existing plug-in devices are mainly made of brass, and their shape is relatively simple, commonly featuring two crescent-shaped protrusions on either side of the pins. After repeated plugging and unplugging operations, the brass terminals tend to loosen due to aging, failing to provide sufficient clamping force to the pins. This results in poor contact between the socket and the pins, leading to increased resistance. Under the same current and time conditions, this significantly increases the heat generated, causing the plug-in device to overheat, potentially posing a fire hazard in severe cases. Furthermore, traditional sockets only have two points of contact with the pins, resulting in a very limited contact area. As the socket ages and loosens, the effective contact area further decreases, making it difficult to maintain uniform pressure distribution.

[0003] The prior art, patent number CN202420481158.4, discloses a wall-mounted plug-in device. By setting two arc-shaped protrusions on the second clip, multiple contact points can be formed between the plug pin and the socket. Simultaneously, the contact between the abutting surface and the support portion provides support for the second clip, thereby strengthening the clamping force of the two arc-shaped protrusions on the second clip towards the first clip. However, it still relies on the spring force of the clip itself. After repeated plugging and unplugging operations, the pressure exerted by the abutting surface on the support portion of the second clip can easily cause wear to the support portion, shortening the service life of the socket. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a plug terminal that prevents loosening and increases the contact area, including a body. One end of the body is provided with two spaced-apart clips, and a pin groove is formed between the two clips. The upper end of the clips is provided with a wavy bending area, and the wavy bending area forms at least two inward bends protruding into the pin groove.

[0005] In some possible embodiments, the inner bends of the two clamping pieces are arranged opposite each other, and elastic clamping elements are provided on the outer periphery of the two clamping pieces at the positions of the inner bends.

[0006] In some possible embodiments, the resilient clamping element includes an elastic ring that is fitted onto the outer periphery of the two clamping pieces and located at the inner bend.

[0007] In some possible embodiments, the resilient clamping element includes a clamping clamp that is fitted onto the outer periphery of the two clamping pieces and located at the inner bend.

[0008] In some possible embodiments, the clamp includes two clamping portions located on the outer surface of the inner bend, one end of the two clamping portions being connected by a connecting portion, and the inner bends of two adjacent clamps located on the same side being connected by an elastic pressure plate.

[0009] In some possible embodiments, limiting blocks for limiting the corresponding elastic clamping members are provided on the outer surfaces of the two clamping pieces at positions at both ends of the inner bend.

[0010] In some possible embodiments, a U-shaped tightening part is provided in the pin slot, and the two ends of the U-shaped tightening part are respectively fixedly connected to the two clamping pieces. When the pin is inserted, the U-shaped tightening part can be pressed to force the two clamping pieces to close and clamp the pin.

[0011] This utility model also provides a socket assembly, which includes at least two slots for receiving plug terminals as described in the above embodiments.

[0012] In some possible embodiments, a raised edge is provided on both sides of the inner wall of the insertion compartment and at a position between the two inner bends, the raised edge being able to abut against the elastic pressure plate on the insertion terminal.

[0013] The present invention also provides a connecting device, which includes: a housing, a panel and a plug assembly as described in the above embodiment, the plug assembly being installed inside the housing, the panel being detachably installed on the housing to cover the plug assembly, and the panel having a plug hole at a position corresponding to the plug slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The plug terminal of this utility model has two spaced clips at one end of the main body. The upper end of the clip has a wavy bending area and at least two inner bends, which increases the contact points between the clip and the plug from the original two points to more than two points. This not only increases the contact area, reduces the contact resistance, and reduces energy loss, but also the wavy design can better adapt to plugs of different specifications and shapes, improving the versatility and compatibility of the plugging and unplugging device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1Schematic diagram of the structure of the plug terminal provided in the embodiment of this utility model Figure 1 ;

[0018] Figure 2 Schematic diagram of the structure of the plug terminal provided in the embodiment of this utility model Figure 2 ;

[0019] Figure 3 A cross-sectional view of the plug terminal provided in an embodiment of this utility model;

[0020] Figure 4 A cross-sectional view of the socket assembly provided in an embodiment of this utility model;

[0021] Figure 5 An exploded view of the insertion / removal device provided in an embodiment of this utility model;

[0022] Figure 6 A cross-sectional view of the insertion and removal device provided in an embodiment of this utility model.

[0023] Reference numerals: 10 for plug terminal, 11 for body, 12 for clip, 13 for plug groove, 14 for wavy bending area, 15 for inner bend, 16 for limiting block, 20 for elastic clamping member, 21 for elastic ring, 22 for clamping clamp, 23 for clamping part, 24 for connecting part, 25 for elastic pressure plate, 30 for outer shell, 31 for plug compartment, 32 for protruding edge, 40 for panel, 41 for plug hole. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0025] Reference Figures 1 to 3The plug terminal 10 shown, which prevents loosening and increases the contact area, includes a body 11. Two spaced-apart clips 12 are provided at one end of the body 11, forming a pin groove 13 between the clips 12. Each clip 12 has a wavy bending area 14 at its upper end, forming at least two inwardly curved portions 15 protruding into the pin groove 13. The body 11 and clips 12 can be integrally molded from brass. During production, this shape can be achieved using special molds and processing techniques, and the apex and trough of the waves can be rounded to ensure smooth contact between the inwardly curved portions 15 and the pins, preventing scratches to the pins or affecting the contact effect. The wavy bending area 14 at the upper end of the clip 12 can gradually increase in size from top to bottom, gradually approaching and pressing the pin. This increases the contact points between the clip 12 and the pin from one point to at least two points. The wavy design not only increases the contact area, reduces contact resistance, reduces energy loss, and improves power transmission efficiency, but also reduces heat generation, effectively extending the service life of the connection device. The wavy design can also better adapt to pins of different specifications and shapes, improving the versatility and compatibility of the connection device, providing users with a more convenient and reliable power experience, while reducing electrical damage caused by connection device failure and lowering maintenance costs.

[0026] In some possible embodiments, refer to Figures 1 to 3 As shown, the inner bends 15 of the two clamping pieces 12 are arranged opposite each other, and elastic clamping elements 20 are provided on the outer periphery of the two clamping pieces 12 at the positions of the inner bends 15. When the pin is inserted, the rebound force generated by the elastic clamping elements 20 can significantly enhance the clamping force of the two clamping pieces 12 on the pin, making the pin more stable after insertion and ensuring effective contact between the clamping pieces 12 and the pin; the pin slot 13 with the plug terminal can better adapt to pins of different specifications and shapes, improving the versatility and compatibility of the plugging and unplugging device.

[0027] In some possible embodiments, refer to Figure 1 As shown, the elastic clamping member 20 includes an elastic ring 21, which is fitted around the outer periphery of the two clamping plates 12 and located at the inner bend 15. The elastic ring 21 can be a ring-shaped stainless steel spring, but its shape is not limited to a ring and can be adjusted according to the specific shape of the plug terminal. When the plug is inserted, the elastic ring 21 is stretched, and the rebound force generated by the spring according to Hooke's Law can significantly enhance the clamping force of the clamping plates 12 on the plug, ensuring that the plug is more secure after insertion. At the same time, it provides constant pressure for the contact between the plug and the clamping plates 12, effectively reducing current fluctuations and heat generation problems caused by poor contact, reducing fire risk, and improving electrical safety.

[0028] In some possible embodiments, refer to Figures 2 to 4As shown, the elastic clamping member 20 includes a clamping clamp 22, which is fitted around the outer periphery of the two clamping pieces 12 and located at the inner bend 15. The clamping clamp 22 can clamp the outer periphery of the clamping pieces 12 to reduce the outward elastic force of the clamping pieces 12, making the insertion of the pin more stable.

[0029] In some possible embodiments, the clamp 22 includes two clamping portions 23 located on the outer surface of the inner bend 15. One end of the two clamping portions 23 is connected by a connecting portion 24. The inner bends 15 of two adjacent clamps 22 located on the same side are connected by an elastic pressure plate 25. The elastic pressure plate 25 is bent outward and can abut against the inner wall of the mounting chamber of the plug assembly. When the plug is inserted, it can also provide inward pressure on the clamping plate 12, further improving the clamping force.

[0030] In some possible embodiments, to prevent the clamp 22 from slipping out of the inner bend 15, limiting blocks 16 for limiting the elastic clamping member 20 are provided on the outer surfaces of the two clamping pieces 12 at both ends of the inner bend 15. When the elastic clamping member 20 is worn or damaged, it is easy to remove and replace it. Of course, the clamping part 23 can also be fixed to the outer surface of the inner bend 15 by welding.

[0031] In some possible embodiments, a U-shaped tightening part is also provided in the pin slot 13. The U-shaped tightening part is located in the middle or lower part between the two clamping pieces 12. The two ends of the U-shaped tightening part are fixedly connected to the two clamping pieces 12 respectively. When the pin is inserted, the end of the pin can press against the U-shaped tightening part and pull the two clamping pieces 12 inward and close them together so that the two clamping pieces 12 clamp the pin.

[0032] Reference Figure 4 The socket assembly shown includes a socket 31, in which the plug terminal 10 of the above embodiment is accommodated.

[0033] In some possible embodiments, refer to Figure 4 As shown, both sides of the inner wall of the insertion compartment 31 are provided with protruding edges 32 located between the two inner bends 15. The area between two adjacent inner bends 15 of the wavy bending area 14 is the outer bend, that is, the protruding edges 32 are provided at the corresponding positions of the outer bends. The protruding edges 32 can abut against the elastic pressing sheet 25 to suppress the deformation of the elastic pressing sheet 25. Of course, in other embodiments where the elastic pressing sheet 25 is not provided, the degree of outward protrusion of the outer bend can be increased. In this case, the outer wall of the outer bend directly abuts against the protruding edges 32 to improve the clamping force of the clamping piece 12.

[0034] Reference Figures 5 to 6The connecting device shown includes a housing 30, a panel 40, and a socket assembly as described in the above embodiment. The socket assembly is installed inside the housing 30, and the panel 40 is detachably installed on the housing 30 to cover the socket assembly. A socket hole 41 is provided on the panel 40 at a position corresponding to the pin slot 13. The specific structure of the housing 30 and the panel 40 of the connecting device can be referred to in the prior art, such as the safe plugging and unplugging device disclosed in patent number CN105938952B, which will not be detailed in this application. This connecting device can better adapt to different specifications and shapes of pins, providing a stable and reliable electrical connection for both standard and non-standard pins. This design significantly improves the versatility and compatibility of the connecting device, providing users with a convenient and reliable power experience in various power usage scenarios, eliminating the need to worry about the matching problem between the pins and the connecting device.

[0035] This utility model discloses a plug terminal, socket assembly, and connecting device that prevents loosening and increases the contact area. The clamp is designed in a wave shape with at least two inner bends 15, increasing the contact points between the clamp 12 and the pin from two to more than two. This not only increases the contact points, reduces contact resistance, and decreases energy loss, but the wave shape also better accommodates pins of different specifications and shapes, improving the versatility and compatibility of the connecting device. Furthermore, an elastic clamping member 20 is fitted outside the inner bends 15. When the pin is inserted, the rebound force generated by the elastic clamping member 20 significantly enhances the clamping force of the clamp 12 on the pin, making the pin more secure and ensuring effective contact between the clamp 12 and the pin.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A plug terminal that prevents loosening and increases the contact area, characterized in that, Includes a body (11), one end of which is provided with two spaced clips (12), and a pin groove (13) is formed between the two clips (12). The upper end of the clips (12) is provided with a wave bending area (14), and the wave bending area (14) forms at least two inwardly curved portions (15) protruding into the pin groove (13).

2. The anti-loosening and increased contact area plug terminal according to claim 1, characterized in that, The inner bends (15) of the two clamping pieces (12) are arranged opposite each other, and elastic clamping members (20) are provided on the outer periphery of the two clamping pieces (12) and at the position of the inner bends (15).

3. The lockwire terminal of claim 2, wherein: The elastic clamping member (20) includes an elastic ring (21), which is fitted on the outer periphery of the two clamping pieces (12) and located at the inner bend (15).

4. The lockwire terminal of claim 2, wherein: The elastic clamping member (20) includes a clamping clamp (22), which is fitted on the outer periphery of the two clamping pieces (12) and located at the inner bend (15).

5. The lockwire terminal of claim 4, wherein: The clamp (22) includes two clamping parts (23) located on the outer surface of the inner bend (15). One end of the two clamping parts (23) is connected by a connecting part (24). The inner bends (15) of two adjacent clamps (22) located on the same side are connected by an elastic pressure plate (25).

6. The lockwire terminal of claim 2, wherein: On the outer surface of the two clamping pieces (12) and at both ends of the inner bend (15), there are limiting blocks (16) for limiting the corresponding elastic clamping member (20).

7. The lockwire terminal of claim 1, wherein: A U-shaped tightening part is provided in the pin slot (13). The two ends of the U-shaped tightening part are fixedly connected to the two clamps (12) respectively. When the pin is inserted, the U-shaped tightening part can be pressed to force the two clamps (12) to close and clamp the pin.

8. A bushing assembly, comprising: Includes at least two slots (31) for accommodating the plug terminals as described in any one of claims 1 to 7.

9. The bushing assembly of claim 8, wherein, The insert (31) has protruding edges (32) on both sides of the inner wall and between the two inner bends (15), and the protruding edges (32) can abut against the elastic pressure plate (25) on the plug terminal.

10. A connection device, characterized in that include: The housing (30), the panel (40), and the socket assembly as described in claim 8 or 9, wherein the socket assembly is installed inside the housing (30), the panel (40) is detachably installed on the housing (30) to cover the socket assembly, and the panel (40) has a socket hole (41) at a position corresponding to the pin slot (13).

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