Novel large-current via hole wiring terminal

Abstract

The utility model discloses a novel large-current via hole wiring terminal, which comprises an insulating base and a conductive assembly, and one end of the insulating base is provided with a plug hole; the conductive assembly is located in the insulating base and comprises a conductive piece and a double-layer metal elastic piece, a wire harness or a copper bar in the power box is clamped through the double-layer metal elastic piece so that the power box can be fixedly connected with the wiring terminal, and insertion connection is achieved through the double-layer metal elastic piece to replace traditional bolt connection. The connection between the power box and the wiring terminal is convenient and fast, and the operation difficulty is reduced; and secondly, the metal elastic sheet adopts a double-layer design, so that the strength and the stability of the metal elastic sheet are enhanced, the conductivity of the metal elastic sheet is also improved, and the metal elastic sheet can bear larger current and is suitable for being applied to a high-power and large-current power box.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, and more specifically to a novel large current through-hole terminal. Background Art

[0002] The power supply box mainly provides operating power for vacuum circuit breakers and other high-voltage switches. The power supply box uses an input voltage of 220V or 380V, which is rectified by a thyristor voltage regulator, and outputs DC. It has the characteristics of outputting DC voltage with multiple gears and large current, or AC voltage, and performs single-open and single-close operations.

[0003] The power box is the control center that directs the reasonable distribution of electric energy among various components in the power supply line. It is the control link that reliably receives the upper power supply and correctly feeds the load electric energy. It is also the key to whether the user is satisfied with the power supply quality.

[0004] The power box is generally assembled in a closed or semi-closed metal cabinet or on a screen according to the requirements of electrical wiring, with switchgear, measuring instruments, protective electrical appliances and auxiliary equipment, to form a low-voltage power box. In normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches; in case of failure or abnormal operation, the circuit can be cut off or alarmed with the help of protective electrical appliances; various parameters in operation can be displayed with the help of measuring instruments, and some electrical parameters can be adjusted, and prompts or signals can be issued for deviations from normal working conditions.

[0005] The conventional power box connector and the wiring harness / copper busbar inside the power box are connected by screws. Specifically, when connecting, you first need to loosen the screws on the connector to facilitate the insertion of the wiring harness or copper busbar in the power box, and then tighten the screws to achieve current conduction. However, as the current increases, especially at the connector end and the equipment copper busbar bolt connection, due to limited contact area and uneven contact pressure distribution, resistance is easily increased, resulting in high temperature at the connection point between the power box and the connector, thereby affecting the overall performance of the product; secondly, this connection method is extremely inconvenient and increases the difficulty of work for operators. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a novel large current through-hole terminal to solve the problem of poor convenience of use of the existing connector for power boxes.

[0007] The technical solution of the utility model is as follows: A new type of high current through-hole terminal, comprising:

[0008] An insulating base, wherein one end of the insulating base is provided with a plug hole;

[0009] A conductive component is located in the insulating base, and includes a conductive part and a double-layer metal spring. One end of the double-layer metal spring is fixedly connected to the conductive part, and the other end of the double-layer metal spring is close to the plug hole for clamping the copper bus or wire harness in the power box.

[0010] Furthermore, the double-layer metal spring sheet includes a first spring sheet group and a second spring sheet group, the second spring sheet group is located inside the first spring sheet group, the first spring sheet group includes two outer spring sheets, the two outer spring sheets are bent relative to each other to form a first clamping opening and a first accommodating space for accommodating the second spring sheet group; the second spring sheet group includes two inner spring sheets, the two inner spring sheets are bent relative to each other to form a second clamping opening and a second accommodating space for accommodating a copper bus or a wiring harness.

[0011] Furthermore, both sides of the conductive member are provided with bayonet ports, the end of the inner spring sheet away from the plug-in hole is provided with a first latching protrusion, the end of the outer spring sheet away from the plug-in hole is provided with a second latching protrusion, and the first latching protrusion and the second latching protrusion are both latched into the bayonet ports.

[0012] Furthermore, it also includes a fixing member and an insulating fixing block, one end of the fixing member passes through the first spring sheet group, the second spring sheet group and the conductive member and is locked in the insulating fixing block.

[0013] Furthermore, the conductive part is arranged along the length direction of the insulating base, and the conductive part includes a base, a first connecting part and a second connecting part, the first connecting part and the second connecting part are both perpendicular to the base, and in the width direction of the insulating base, the projections of the first connecting part and the second connecting part do not overlap.

[0014] Furthermore, the base, the first connecting portion and the second connecting portion are an integral structure.

[0015] Furthermore, it also includes a fastening assembly, which is used to connect the cable to the conductive member. The fastening assembly includes a bolt, a nut, a circular gasket and an elastic gasket. The circular gasket and the elastic gasket are both sleeved on the bolt, and the bolt passes through the first connecting part or the second connecting part and is locked to the nut.

[0016] Furthermore, a cover plate is provided at the rear end of the insulating base, and the cover plate is rotatably connected to the insulating base.

[0017] Furthermore, elastic buckles are provided at both upper and lower ends of the insulating base, and a through groove penetrating the wall thickness of the insulating base is provided on the outer side of the elastic buckle, and the elastic buckle is used to buckle with the side wall of the power box.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] (1) Compared with the traditional wiring terminals for power supply boxes, the utility model provides a new type of high-current through-hole wiring terminal, including an insulating base and a conductive component, and a plug-in hole is provided at one end of the insulating base; the conductive component is located in the insulating base, and the conductive component includes a conductive part and a double-layer metal spring, and the double-layer metal spring clamps the wiring harness or copper bus in the power supply box so that the power supply box and the wiring terminal are fixedly connected. By using the double-layer metal spring to achieve plug-in connection instead of the traditional bolt connection, the connection between the power supply box and the wiring terminal is convenient and quick, and the operation difficulty is reduced; secondly, the metal spring adopts a double-layer design, which enhances the strength and stability of the metal spring, and also improves the conductive performance of the metal spring, so that it can carry a larger current and is suitable for high-power and high-current power supply box applications.

[0020] (2) The utility model provides a new type of high-current through-hole terminal block, in which one end of the double-layer metal spring is fixedly connected to the conductive member, and the other end of the double-layer metal spring is close to the plug hole, so as to clamp the copper busbar or wire harness in the power box. This design makes the insertion and connection of the copper busbar or wire harness simpler and faster, and the operator does not need to use screws or other tools for fixing, which reduces the difficulty of operation and the error rate. At the same time, due to the use of double-layer metal springs for fixing, the connection reliability is enhanced, and the failure and maintenance requirements caused by poor contact are reduced, thereby reducing maintenance costs, reducing local temperature rise problems, and helping to maintain the stability of the internal temperature of the power box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic structural diagram of a novel high-current via-hole terminal in an embodiment of the utility model;

[0023] Figure 2 This is a wiring diagram of a novel high-current via-hole terminal in an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure decomposition of a novel high-current via-hole terminal in an embodiment of the utility model;

[0025] Figure 4 It is a cross-sectional view of a novel high-current via terminal in an embodiment of the utility model.

[0026] In the figure, 1. insulating base; 11. plug-in hole; 12. elastic buckle; 13. through slot; 2. conductive component; 21. conductive member; 21a. base; 21b. first connecting part; 21c. second connecting part; 22. double-layer metal spring; 221. first spring group; 2211. outer spring; 2212. first clamping opening; 2213. first accommodating space; 2214. second clamping protrusion; 222. second spring group; 2221. inner spring; 2222. second clamping opening; 2223. second accommodating space; 2224. first clamping protrusion; 3. fixing member; 4. fastening component; 41. bolt; 42. nut; 43. circular gasket; 44. elastic gasket; 5. cover plate; 6. side wall of power box; 7. copper busbar; 8. insulating fixing block. DETAILED DESCRIPTION

[0027] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0028] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0029] See also Figure 1 to Figure 4 As shown, an embodiment of the utility model provides a new type of large current through-hole terminal, including an insulating base 1 and a conductive component 2, wherein a plug-in hole 11 is provided at one end of the insulating base 1; the conductive component 2 is located in the insulating base 1, and the conductive component 2 includes a conductive member 21 and a double-layer metal spring 22, wherein one end of the double-layer metal spring 22 is fixedly connected to the conductive member 21, and the other end of the double-layer metal spring 22 is close to the plug-in hole 11, so as to clamp the copper bus 7 or wiring harness in the power box.

[0030] Conventional power supply box terminals are usually fixedly connected to the wiring harness or copper busbar 7 in the power supply box by bolts 41. This connection method requires manual tightening of the bolts 41, which is cumbersome and time-consuming. Compared with conventional power supply box terminals, the new high-current through-hole terminal provided in the embodiment of the utility model includes an insulating base 1 and a conductive component 2, and a plug-in hole 11 is provided at one end of the insulating base 1; the conductive component 2 is located in the insulating base 1, and the conductive component 2 includes a conductive member 21 and a double-layer metal spring 22, and the wiring harness or copper busbar 7 in the power supply box is clamped by the double-layer metal spring 22, so that the power supply box and the terminal are fixedly connected, and the double-layer metal spring 22 is used to achieve plug-in connection instead of the traditional bolt 41 connection, so that the connection between the power supply box and the terminal is convenient and fast, and the difficulty of operation is reduced; secondly, the metal spring adopts a double-layer design, which enhances the strength and stability of the metal spring, and also improves the conductivity of the metal spring, and can carry a larger current, which is suitable for high-power and high-current power supply box applications.

[0031] Specifically, one end of the double-layer metal spring 22 is fixedly connected to the conductive member 21, and the other end of the double-layer metal spring 22 is close to the plug hole 11, so as to clamp the copper busbar 7 or the wiring harness in the power supply box. This design makes the insertion and connection of the copper busbar 7 or the wiring harness simpler and faster, and the operator does not need to use screws or other tools for fixing, which reduces the difficulty of operation and the error rate. At the same time, since the double-layer metal spring 22 is used for fixing, the connection reliability is enhanced, and the failure and maintenance requirements caused by poor contact are reduced, thereby reducing the maintenance cost, reducing the problem of local temperature rise, and helping to maintain the stability of the internal temperature of the power supply box.

[0032] Preferably, the double-layer metal spring 22 includes a first spring group 221 and a second spring group 222. This hierarchical design not only enhances the stability of the overall structure of the double-layer metal spring 22, but also enables the double-layer metal spring 22 to disperse stress layer by layer when subjected to external force, thereby improving durability.

[0033] Specifically, the second spring sheet group 222 is located in the first spring sheet group 221, and the first spring sheet group 221 includes two outer spring sheets 2211, which are bent relative to each other to form a first clamping opening 2212 and a first accommodating space 2213 for accommodating the second spring sheet group 222; the first clamping opening 2212 is directly used to clamp the copper bus 7 or the wiring harness in the power supply box, and the second spring sheet group 222 includes two inner spring sheets 2221, which are bent relative to each other to form a second clamping opening 2222 and a second accommodating space 2223 for accommodating the copper bus 7 or the wiring harness. The second clamping opening 2222 is also used to clamp the copper bus 7 or the wiring harness in the power supply box. This double-layer clamping design not only improves the stability of the clamping, but also makes the clamping more uniform, reducing the risk of looseness or poor contact caused by improper clamping.

[0034] It is worth mentioning that since the inner spring clip 2221 and the outer spring clip 2211 work together to clamp the copper bus 7 or wiring harness in the power box, compared with traditional terminal blocks, the current can be better distributed and conducted when passing through, reducing the generation of resistance and heat, thereby improving the overall conductive efficiency.

[0035] Preferably, both sides of the conductive member 21 are provided with bayonet holes, the end of the inner spring piece 2221 away from the plug hole 11 is provided with a first bayonet protrusion 2224, the end of the outer spring piece 2211 away from the plug hole 11 is provided with a second bayonet protrusion 2214, and the first bayonet protrusion 2224 and the second bayonet protrusion 2214 are both bayoneted into the bayonet holes. This design enhances the connection firmness of the inner spring piece 2221, the outer spring piece 2211 and the conductive member 21, and effectively prevents the inner spring piece 2221 or the outer spring piece 2211 from shifting due to external force impact during use.

[0036] The novel high current via terminal provided by the embodiment of the utility model further comprises a fixing member 3 and an insulating fixing block 8 , one end of the fixing member 3 passes through the first spring sheet group 221 , the second spring sheet group 222 and the conductive member 21 and is locked in the insulating fixing block 8 .

[0037] Preferably, the conductive member 21 is arranged along the length direction of the insulating base 1, and the conductive member 21 includes a base 21a, a first connecting portion 21b and a second connecting portion 21c, the first connecting portion 21b and the second connecting portion 21c are both perpendicular to the base 21a, and in the width direction of the insulating base 1, the projections of the first connecting portion 21b and the second connecting portion 21c do not overlap. Specifically, the base 21a, the first connecting portion 21b and the second connecting portion 21c are an integrated structure. This design allows the first connecting portion 21b and the second connecting portion 21c to be staggered, so as to facilitate the separate connection of the wiring harness.

[0038] Specifically, it also includes a fastening assembly 4, which is used to connect the cable to the conductive member 21. The fastening assembly 4 includes a bolt 41, a nut 42, a circular gasket 43 and an elastic gasket 44. The circular gasket 43 and the elastic gasket 44 are both sleeved on the bolt 41, and the bolt 41 passes through the first connecting part 21b or the second connecting part 21c and is locked on the nut 42.

[0039] Preferably, a cover plate 5 is provided at the rear end of the insulating base 1 , and the cover plate 5 is rotatably connected to the insulating base 1 .

[0040] Preferably, both upper and lower ends of the insulating base 1 are provided with elastic buckles 12, and the outer side of the elastic buckle 12 is provided with a through groove 13 penetrating the wall thickness of the insulating base 1, and the elastic buckle 12 is used to buckle with the side wall 6 of the power box. Specifically, when the insulating base 1 is pushed from outside the power box to be inserted into the power box, the elastic buckle 12 is pressed by the side wall 6 of the power box so that the elastic buckle 12 is bent and enters the inner cavity of the insulating base 1. When the insulating base 1 is pushed to the specified position, the elastic buckle 12 rebounds due to its own elastic force to restore deformation, so that the elastic buckle 12 automatically buckles with the side wall 6 of the power box, thereby preventing the terminal from falling off from the power box.

[0041] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0043] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A new type of high current through-hole terminal, characterized in that: include: An insulating base (1), wherein one end of the insulating base (1) is provided with a plug hole (11); A conductive component (2), the conductive component (2) being located in the insulating base (1), the conductive component (2) comprising a conductive part (21) and a double-layer metal spring (22), one end of the double-layer metal spring (22) being fixedly connected to the conductive part (21), and the other end of the double-layer metal spring (22) being close to the plug hole (11) for clamping a copper busbar (7) or a wiring harness in a power supply box.

2. A novel high current via terminal as claimed in claim 1, characterized in that: The double-layer metal spring sheet (22) comprises a first spring sheet group (221) and a second spring sheet group (222), wherein the second spring sheet group (222) is located inside the first spring sheet group (221), wherein the first spring sheet group (221) comprises two outer spring sheets (2211), wherein the two outer spring sheets (2211) are bent relative to each other to form a first clamping opening (2212) and a first accommodating space (2213) for accommodating the second spring sheet group (222); and the second spring sheet group (222) comprises two inner spring sheets (2221), wherein the two inner spring sheets (2221) are bent relative to each other to form a second clamping opening (2222) and a second accommodating space (2223) for accommodating a copper busbar (7) or a wiring harness.

3. A novel high current via terminal as claimed in claim 2, characterized in that: Both sides of the conductive member (21) are provided with bayonet ports, one end of the inner spring sheet (2221) away from the plug hole (11) is provided with a first latching protrusion (2224), and one end of the outer spring sheet (2211) away from the plug hole (11) is provided with a second latching protrusion (2214), and both the first latching protrusion (2224) and the second latching protrusion (2214) are latched into the bayonet ports.

4. A novel high current via terminal as claimed in claim 2, characterized in that: It also comprises a fixing member (3) and an insulating fixing block (8), wherein one end of the fixing member (3) passes through the first spring sheet group (221), the second spring sheet group (222) and the conductive member (21) and is locked in the insulating fixing block (8).

5. A novel high current via terminal as claimed in claim 2, characterized in that: The conductive member (21) is arranged along the length direction of the insulating base (1), and the conductive member (21) comprises a base (21a), a first connecting portion (21b) and a second connecting portion (21c), the first connecting portion (21b) and the second connecting portion (21c) are both perpendicular to the base (21a), and in the width direction of the insulating base (1), the projections of the first connecting portion (21b) and the second connecting portion (21c) do not overlap.

6. A novel high current via terminal as claimed in claim 5, characterized in that: The base (21a), the first connecting portion (21b) and the second connecting portion (21c) are an integrated structure.

7. A novel high current via terminal as claimed in claim 5, characterized in that: The invention also comprises a fastening assembly (4), wherein the fastening assembly (4) is used to connect the cable to the conductive member (21), and the fastening assembly (4) comprises a bolt (41), a nut (42), a circular gasket (43) and an elastic gasket (44), wherein the circular gasket (43) and the elastic gasket (44) are both sleeved on the bolt (41), and the bolt (41) passes through the first connecting portion (21b) or the second connecting portion (21c) and is locked on the nut (42).

8. A novel high current via terminal as claimed in claim 5, characterized in that: A cover plate (5) is provided at the rear end of the insulating base (1), and the cover plate (5) is rotatably connected to the insulating base (1).

9. A novel high current via terminal as claimed in claim 5, characterized in that: The upper and lower ends of the insulating base (1) are both provided with elastic buckles (12), and the outer side of the elastic buckle (12) is provided with a through groove (13) penetrating the wall thickness of the insulating base (1), and the elastic buckle (12) is used to buckle with the side wall (6) of the power box.

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