A resilient push-pull type quick wiring device

Abstract

The utility model provides a kind of elastic push-pull type quick wiring device, by being equipped with insulating handle, split type wire clamp device and elastic push-pull locking sleeve, split type wire clamp device is connected with insulating handle, split type wire clamp device includes two sector-shaped clamping bodies, one end of sector-shaped clamping body inside surface is equipped with sector-shaped recess, two sector-shaped clamping bodies are mutually symmetrical and are based on two sector-shaped recesses to form the concave semispherical shape clamping port for embedding, semispherical shape clamping port is used for clamping the circuit conductive component of ball type, elastic push-pull locking sleeve, elastic push-pull locking sleeve is connected between split type wire clamp device and insulating handle, elastic push-pull locking sleeve is equipped with telescopic spring inside, telescopic spring is used for adjusting the telescopic length of split type wire clamp device to control the opening size of semispherical shape clamping port, to make that clamping port can be closely fitted the surface of ball type circuit conductive component, to realize the stable clamping of large area, the accuracy of electrical characteristic test is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of intercity EMU vehicle commissioning, and in particular to a flexible push-pull type quick wiring device. Background Technology

[0002] In the production and testing of power distribution switchgear, electrical characteristic testing is a crucial step in ensuring product quality. Most power distribution switchgear manufacturers in the industry commonly use test clamps to quickly clamp the terminals during electrical characteristic testing. Compared to traditional threaded connections, this test clamp connection method has a significant advantage in operating speed, effectively improving testing efficiency and meeting the rapid testing needs of large-scale production.

[0003] However, test clamps have some insurmountable drawbacks in practical use. Firstly, the clamping force of the test clamps is relatively large, making it difficult to open and close them quickly and effortlessly during manual operation. This not only increases the operator's workload but may also prolong the operation time, affecting the overall testing efficiency. Secondly, when the clamping force is insufficient, the holding force during testing is inadequate, failing to ensure a stable connection between the test clamps and the terminals, thus severely affecting the accuracy of the test data and consequently the accurate assessment of the switchgear's electrical performance. Thirdly, when the terminals are hemispherical, using traditional test clamps for connection testing results in a small contact area under high-current testing conditions, leading to uneven current density distribution, increased contact resistance, and affecting the accuracy of the test data, failing to truly reflect the electrical characteristics of the distribution switchgear. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an elastic push-pull type quick wiring device that allows the clamp to fit tightly against the surface of the spherical circuit conductive component, thereby achieving stable clamping over a large area and significantly improving the accuracy of electrical characteristic testing.

[0005] To achieve the above objectives, a first aspect of this utility model provides a flexible push-pull type quick-connection device, comprising: Insulated handle; The split-type wire clamp device is connected to the insulating handle. The split-type wire clamp device includes two fan-shaped clamps. One end of the inner side of the fan-shaped clamp is provided with a fan-shaped groove. The two fan-shaped clamps are symmetrically interlocked with each other and based on the interlocking of the two fan-shaped grooves to form a concave hemispherical clamping opening. The hemispherical clamping opening is used to clamp spherical circuit conductive components. The elastic push-pull locking sleeve is fitted onto the connection between the split-type wire clamp device and the insulating handle. The elastic push-pull locking sleeve is equipped with a telescopic spring, which is used to adjust the extension and retraction length of the split-type wire clamp device to control the opening size of the hemispherical clamp.

[0006] In some embodiments, the outer side of the fan-shaped clamp is provided with a first locking thread, and the inner side of the elastic push-pull locking sleeve is provided with a second locking thread. The second locking thread and the first locking thread mesh with each other. Both the first locking thread and the second locking thread are used to lock the connection between the split-type wire clamp device and the elastic push-pull locking sleeve in a rotating manner.

[0007] In some embodiments, the distance between the first locking thread and the second locking thread is a pitch length of 1 to 2.

[0008] In some embodiments, the first structural thickness of the fan-shaped clamp body near the fan-shaped groove is greater than the second structural thickness of the fan-shaped clamp body away from the fan-shaped groove, and the hemispherical clamp mouth forms an inverted conical interface based on the size relationship between the first structural thickness and the second structural thickness.

[0009] In some embodiments, one end of the insulating handle is provided with a mounting groove, and the end of the fan-shaped clamp away from the fan-shaped groove is located in the mounting groove.

[0010] In some embodiments, when the telescopic spring is in a free state, the elastic push-pull locking sleeve engages with the hemispherical clamp so that the hemispherical clamp is at the first opening size.

[0011] In some embodiments, when the telescopic spring is in a compressed state, the elastic push-pull locking sleeve engages with the insulating handle so that the hemispherical clamp is at a second opening size, which is larger than the first opening size.

[0012] In some embodiments, the fan-shaped clamp is made of copper T2.

[0013] Furthermore, in some embodiments, the insulating handle is made of fiberglass FR4.

[0014] Furthermore, in some embodiments, the material of the elastic push-pull locking sleeve is POM.

[0015] According to an embodiment of this utility model, a flexible push-pull type quick-connection device has at least the following beneficial effects: By adopting a split-type wire clamp device, its two fan-shaped clamps can be symmetrically fitted together based on the fan-shaped grooves to form a concave hemispherical clamping opening. This unique structural design allows the clamping opening to tightly fit the surface of the spherical circuit conductive component, thereby achieving stable clamping over a large area. This effectively solves the problem of inaccurate test data caused by the small contact area of ​​traditional test clamps, significantly improving the accuracy of electrical characteristic testing. Secondly, the setting of the flexible push-pull locking sleeve and the ingenious application of its internal telescopic spring not only realizes the flexible adjustment of the telescopic length of the split-type wire clamp device, but also allows for precise control of the opening size of the hemispherical clamping opening according to different test requirements and the size of the conductive component, making the clamping operation more convenient and efficient, while ensuring the firmness and reliability of the clamping, avoiding the situation where unstable clamping affects the test results. In addition, the equipped insulating handle provides good insulation protection for the operator, ensuring safety during the testing process. This makes the entire device not only improve the testing efficiency and accuracy, but also provide strong protection for the personal safety of the operator.

[0016] Other features and advantages of this invention will be set forth in the following description and will be apparent in part from the description. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of the elastic push-pull type quick-connection device provided in some embodiments of this utility model; Figure 2 This is an exploded view of the structure of the elastic push-pull quick-connect device provided in some embodiments of this utility model; Figure 3 This is a cross-sectional view of a flexible push-pull quick-connect device provided in some embodiments of this utility model; Figure 4 This is a cross-sectional view of a flexible push-pull quick-connect device provided in some other embodiments of the present invention; Figure 5 This is a schematic diagram of the clamping between the quick-connect device and the conductive components of the circuit provided in other embodiments of this utility model.

[0019] Reference numerals: Insulating handle 100, mounting groove 110, split-type wire clamp device 200, fan-shaped clamp body 210, fan-shaped groove 211, hemispherical clamp 220, first locking thread 230, elastic push-pull locking sleeve 300, telescopic spring 310, second locking thread 320. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, the use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] In existing electrical characteristic testing, test clamps have some insurmountable drawbacks in practical use. Firstly, the clamping force of test clamps is relatively large, making it difficult to open and close them quickly and effortlessly during manual operation. This not only increases the operator's workload but may also prolong operation time, affecting overall testing efficiency. Secondly, when the clamping force is insufficient, the holding force during testing is inadequate, failing to ensure a stable connection between the test clamp and the terminal block, thus severely impacting the accuracy of test data and consequently affecting the accurate assessment of the switchgear's electrical performance. Thirdly, when the terminal block is hemispherical, using traditional test clamps for connection testing results in a small contact area under high-current testing conditions, leading to uneven current density distribution, increased contact resistance, and affecting the accuracy of test data, failing to truly reflect the electrical characteristics of the distribution switchgear.

[0024] Based on this, the present invention provides a flexible push-pull type quick wiring device, which allows the clamp to fit tightly against the surface of the spherical circuit conductive component, thereby achieving stable clamping over a large area and significantly improving the accuracy of electrical characteristic testing.

[0025] Firstly, referring to Figures 1 to 5 As shown, Figure 1 This is an overall structural diagram of the elastic push-pull type quick-connection device provided in some embodiments of this utility model. Figure 2 This is an exploded view of the structure of the elastic push-pull quick-connect device provided in some embodiments of this utility model. Figure 3 This is a cross-sectional view of a flexible push-pull quick-connect device provided in some embodiments of this utility model. Figure 4 This is a cross-sectional view of a flexible push-pull quick-connect device provided in other embodiments of this utility model. Figure 5 This is a schematic diagram illustrating the clamping relationship between the quick-connect device and the conductive components of the circuit according to other embodiments of the present invention. The elastic push-pull quick-connect device includes an insulating handle 100, a split-type wire clamp device 200, and an elastic push-pull locking sleeve 300. The split-type wire clamp device 200 is connected to the insulating handle 100 and includes two fan-shaped clamps 210. One end of the inner surface of each fan-shaped clamp has a fan-shaped groove 211. The two fan-shaped clamps are symmetrically interlocked. Based on the two fan-shaped grooves 211 fitting together to form a concave hemispherical clamp 220, the hemispherical clamp 220 is used to clamp spherical circuit conductive components (such as: side expansion sleeves). The elastic push-pull locking sleeve 300 is sleeved at the connection between the split wire clamp device 200 and the insulating handle 100. The elastic push-pull locking sleeve 300 is provided with a telescopic spring 310, which is used to adjust the telescopic length of the split wire clamp device 200 to control the opening size of the hemispherical clamp 220.

[0026] It should be noted that by adopting the split-type wire clamp device 200, its two fan-shaped clamps 210 can be symmetrically fitted together based on the fan-shaped grooves 211 to form a concave hemispherical clamp 220. This unique structural design allows the clamp to fit tightly against the surface of the spherical conductive component of the circuit, thereby achieving stable clamping over a large area. This effectively solves the problem of inaccurate test data caused by the small contact area of ​​traditional test clamps, and significantly improves the accuracy of electrical characteristic testing. Secondly, the setting of the elastic push-pull locking sleeve 300 and the ingenious application of its internal telescopic spring 310 not only realizes the flexible adjustment of the telescopic length of the split-type wire clamp device 200, but also allows for precise control of the opening size of the hemispherical clamp 220 according to different test requirements and the size of the conductive component. This makes the clamping operation more convenient and efficient, while ensuring the firmness and reliability of the clamping, and avoiding the occurrence of test results being affected by unstable clamping. In addition, the insulated handle 100 provides good insulation protection for operators, ensuring safety during the testing process. This makes the entire device not only improve testing efficiency and accuracy, but also provide strong protection for the personal safety of operators.

[0027] It is worth noting that, referring again Figure 5 As shown, the aforementioned side-expansion sleeve has a "ball-head" shape, making it unsuitable for common circuit testing tools such as alligator clips and power test clamps. Furthermore, because the side-expansion sleeve carries a high current of 600A, the testing tool must be robust and have a sufficiently large contact area. Therefore, this embodiment of the invention utilizes a split-type wire clamp device 200, whose hemispherical clamp 220 is a "concave spherical" type. This increases the conductive contact area when docking with the side-expansion sleeve and allows for quick docking and insertion / removal.

[0028] Furthermore, refer to Figure 3 and Figure 4 As shown, the outer side of the fan-shaped clamp 210 is provided with a first locking thread 230, and the inner side of the elastic push-pull locking sleeve 300 is provided with a second locking thread 320. The second locking thread 320 and the first locking thread 230 mesh with each other. Both the first locking thread 230 and the second locking thread 320 are used to lock the connection between the split-type wire clamp device 200 and the elastic push-pull locking sleeve 300 by rotation.

[0029] It should be noted that, through the threaded design of the fan-shaped clamp body and the inner side of the elastic push-pull locking sleeve 300 engaging with each other, after the elastic push-pull locking sleeve 300 is inserted into the side expansion sleeve, the operator can hold the insulating handle 100 and then use the rotation of the elastic push-pull locking sleeve 300 to quickly lock the split-type wire clamp device 200. This is not only easy to install and highly efficient, but also the axial clamping force generated by the threaded advance is uniform and adjustable, which can effectively protect the wire and reduce contact resistance. At the same time, the combination of the thread self-locking characteristics and the continuous compensation effect of the elastic push-pull locking sleeve 300 significantly enhances the resistance to vibration loosening and creep resistance, ensuring the electrical stability and safety of long-term connections. The overall structure is compact and reliable, reducing operation and maintenance costs.

[0030] In one possible embodiment, the distance between the first locking thread 230 and the second locking thread 320 is a pitch length of 1 to 2.

[0031] Furthermore, the first structural thickness of the end of the fan-shaped clamp near the fan-shaped groove 211 is greater than the second structural thickness of the end of the fan-shaped clamp away from the fan-shaped groove 211, and the hemispherical clamp 220 forms an inverted cone-shaped interface based on the size relationship between the first structural thickness and the second structural thickness.

[0032] It should be noted that in this embodiment of the invention, the structural thickness of the fan-shaped clamp near the groove end is greater than that of the end away from the groove, thereby forming an inverted conical clamp. This structure significantly enhances the radial locking force and axial tensile strength of the clamp on the spherical conductive circuit component, effectively preventing the wire from loosening. The inverted conical interface guides the conductive circuit component to slide in and utilizes the wedge effect to achieve a self-locking effect that tightens as it is pulled, while also improving stress distribution and enhancing connection reliability and safety.

[0033] In one possible embodiment, one end of the insulating handle 100 is provided with a mounting groove 110, and the end of the fan-shaped clamp away from the fan-shaped groove 211 is located in the mounting groove 110.

[0034] Among them, reference Figure 1 As shown, when the telescopic spring 310 is in a free state, the elastic push-pull locking sleeve 300 is fitted onto the hemispherical clamp 220 so that the hemispherical clamp 220 is at the first opening size. When the telescopic spring 310 is in a compressed state, the elastic push-pull locking sleeve 300 is fitted onto the insulating handle 100 so that the hemispherical clamp 220 is at the second opening size, which is larger than the first opening size.

[0035] It should be noted that, in this embodiment of the utility model, the deformation of the telescopic spring 310 in both free and compressed states drives the elastic push-pull locking sleeve 300 to precisely position and engage with the hemispherical clamp 220 or the insulating handle 100, thereby automatically controlling the clamp to switch between a locked state with the first opening size and a released state with the second opening size. This enables rapid clamping and disassembly of wires, significantly improving operational efficiency. The structure utilizes spring force to automatically maintain the locking state, effectively preventing accidental loosening caused by operational vibrations, while also avoiding wear caused by traditional threaded tightening operations, thus improving the reliability and service life of the device.

[0036] In one possible embodiment, the fan-shaped clamp is made of copper T2, the insulating handle 100 is made of fiberglass FR4, and the elastic push-pull locking sleeve 300 is made of POM.

[0037] It should be understood that in this utility model, "at least one (item)" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A flexible push-pull type quick-connection device, characterized in that, include: Insulated handle; The split-type wire clamp device is connected to the insulating handle. The split-type wire clamp device includes two fan-shaped clamp bodies. One end of the inner side of each fan-shaped clamp body is provided with a fan-shaped groove. The two fan-shaped clamp bodies are symmetrically interlocked with each other and interlocked based on the two fan-shaped grooves to form a concave hemispherical clamping opening. The hemispherical clamping opening is used to clamp spherical circuit conductive components. An elastic push-pull locking sleeve is fitted onto the connection between the split-type wire clamp device and the insulating handle. The elastic push-pull locking sleeve is equipped with a telescopic spring, which is used to adjust the telescopic length of the split-type wire clamp device to control the opening size of the hemispherical clamp.

2. The quick-connection device according to claim 1, characterized in that, The outer side of the fan-shaped clamp is provided with a first locking thread, and the inner side of the elastic push-pull locking sleeve is provided with a second locking thread. The second locking thread and the first locking thread mesh with each other. Both the first locking thread and the second locking thread are used to lock the connection between the split-type wire clamp device and the elastic push-pull locking sleeve in a rotating manner.

3. The quick-connection device according to claim 2, characterized in that, The distance between the first locking thread and the second locking thread is a pitch length of 1 to 2.

4. The quick-connect device according to claim 1, characterized in that, The first structural thickness of the fan-shaped clamp body near the fan-shaped groove is greater than the second structural thickness of the fan-shaped clamp body away from the fan-shaped groove, and the hemispherical clamping opening forms an inverted conical interface based on the size relationship between the first structural thickness and the second structural thickness.

5. The quick-connection device according to claim 4, characterized in that, One end of the insulating handle is provided with an assembly groove, and the end of the fan-shaped clamp away from the fan-shaped groove is located in the assembly groove.

6. The quick-connection device according to claim 1, characterized in that, When the telescopic spring is in a free state, the elastic push-pull locking sleeve is fitted onto the hemispherical clamp so that the hemispherical clamp is at the first opening size.

7. The quick-connection device according to claim 6, characterized in that, When the telescopic spring is in a compressed state, the elastic push-pull locking sleeve is fitted onto the insulating handle so that the hemispherical clamp is in a second opening size, which is larger than the first opening size.

8. The quick-connect device according to claim 1, characterized in that, The fan-shaped clamp is made of T2 copper.

9. The quick-connect device according to claim 1, characterized in that, The insulating handle is made of fiberglass FR4.

10. The quick-connect device according to claim 1, characterized in that, The material of the elastic push-pull locking sleeve is POM.

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