A threadless terminal

Abstract

The utility model relates to terminal technical field, especially a screwless terminal, including installable U type metal sheet in the inside of plastic shell, the inside fixed mounting of U type metal sheet has the assembling piece through rivet, one end of assembling piece is fixedly connected with arc spring piece, the utility model has the advantages that the arc support piece outer surface is pasted U type metal sheet inner wall, and further consolidates internal structure, in use, the plug -in external force is passed through control piece, arc spring piece and is delivered to assembling piece and U type metal sheet, because integral forming and many positions pasting limit, component is not easy to deform, looseness. Through " integral forming + many positions limit pasting " design, solve traditional terminal metal component easy deformation, loose problem. Copper alloy material quality guarantees the conductivity, after the structural stability promotion, still can maintain stable contact under long -term plug -in, vibration environment, reduces the risk of contact failure, satisfies high reliability electrical equipment long -term use demand, prolongs terminal service life.

Description

Technical Field

[0001] This utility model relates to the field of terminal technology, and in particular to a threadless terminal. Background Technology

[0002] As a key component for electrical connections, threadless terminals are widely used in various electronic devices and electrical control systems. Through the elastic snap-fit ​​structure of the metal sheet, they enable the quick connection of wires or connectors and circuit conduction without the need for threaded fasteners, simplifying wiring operations and improving the convenience and assembly efficiency of electrical connections. They are commonly used components for achieving stable electrical connections in miniaturized and modular electrical equipment.

[0003] Current threadless terminals have structural design flaws, resulting in insufficient stability of connections between metal components. During long-term insertion and removal or when subjected to vibration, the springs are prone to deformation and the metal plates may loosen, leading to poor contact and reduced conductivity. Furthermore, most terminals do not optimize the positioning and limiting of critical components, making it easy for components to shift after assembly. This affects the overall functional reliability of the terminal and makes it difficult to meet the long-term use requirements of high-reliability electrical equipment. Therefore, a threadless terminal is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a threadless terminal to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides a threadless terminal, comprising a U-shaped metal sheet that can be installed inside a plastic housing. An assembly piece is fixedly installed inside the U-shaped metal sheet by rivets. An arc-shaped spring is fixedly connected to one end of the assembly piece. The open end of the arc-shaped spring is located inside the U-shaped metal sheet. The top end of the arc-shaped spring is in contact with the inner wall of the U-shaped metal sheet. A control piece that is slidably connected to the top end of the arc-shaped spring is fixedly connected to the top end of the assembly piece away from the arc-shaped spring. An arc-shaped support piece is fixedly connected to the end of the assembly piece away from the arc-shaped spring. The outer surface of the arc-shaped support piece is in contact with the inner wall of the U-shaped metal sheet. Two symmetrically arranged wiring metal pieces are fixedly connected to the U-shaped metal sheet.

[0007] Preferably, the U-shaped metal sheet, assembly piece, arc-shaped spring piece, arc-shaped support piece, and wiring metal sheet are all made of copper alloy.

[0008] Preferably, in any of the above embodiments, the top of the U-shaped metal sheet is fixedly connected with a snap-fit ​​protrusion, and the U-shaped metal sheet is snapped into the plastic shell through the snap-fit ​​protrusion.

[0009] Preferably, in any of the above solutions, a limiting groove is provided at the top of the U-shaped metal sheet, and the control piece is slidably connected to the U-shaped metal sheet through the limiting groove.

[0010] Preferably, one side of the U-shaped metal sheet has two symmetrically arranged arc-shaped clearance grooves, and the two wiring metal sheets correspond to the two arc-shaped clearance grooves respectively.

[0011] Preferably, the assembly piece, the arc-shaped spring piece, the arc-shaped support piece, and the wiring metal piece are integrally formed structures manufactured by a stamping process.

[0012] Preferably, in any of the above solutions, the snap-fit ​​protrusion is integrally formed with the U-shaped metal sheet, and the height of the snap-fit ​​protrusion is adapted to the depth of the plastic shell slot.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. During assembly, rivets secure the assembly piece inside the U-shaped metal sheet. Because the assembly piece, arc-shaped spring, arc-shaped support piece, and wiring metal piece are all integrally stamped, the connection strength of each component is high. The open end of the arc-shaped spring is placed inside the U-shaped metal sheet, with its top edge fitting against the inner wall of the U-shaped metal sheet, forming bidirectional support. The control piece slides against the U-shaped metal sheet through a limiting groove, restricting the displacement of the arc-shaped spring. The outer surface of the arc-shaped support piece fits against the inner wall of the U-shaped metal sheet, further reinforcing the internal structure. During use, the insertion and extraction force is transmitted to the assembly piece and U-shaped metal sheet through the control piece and arc-shaped spring. Due to the integral molding and multi-part fitting and limiting, the components are not easily deformed or loosened. The "integrated molding + multi-part limiting and fitting" design solves the problem of easy deformation and loosening of traditional terminal metal components. The copper alloy material ensures conductivity, and the improved structural stability allows for stable contact even under long-term insertion / extraction and vibration environments, reducing the risk of poor contact, meeting the long-term use requirements of high-reliability electrical equipment, and extending the terminal's service life.

[0014] 2. When installing terminals, the snap-fit ​​protrusion on the top of the U-shaped metal piece allows for quick insertion into the plastic housing without the need for additional fasteners. During wiring, pressing the control piece bends the arc-shaped spring clip; after inserting the wire, releasing the clip allows it to spring back and clamp the wire. The wiring metal piece corresponds to the arc-shaped clearance groove, providing space for wiring operations. Due to its one-piece molded structure, the wiring metal piece is precisely positioned, making connection to external wiring easier. The snap-fit ​​protrusion enables quick assembly of terminals and housings, simplifying the installation process; the limiting groove and arc-shaped clearance groove optimize operating space and guidance, making wiring easier; the one-piece molded structure ensures component positioning accuracy, improving assembly and wiring efficiency. Compared to traditional terminals, this reduces installation time, is suitable for automated production lines or operations in confined spaces, and its precise structure reduces wiring error rates, improving the overall reliability of electrical connections. Attached Figure Description

[0015] Figure 1 This is a first-view structural diagram of the assembly of this utility model; Figure 2 This is a second-view structural diagram of the assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the U-shaped metal sheet of this utility model; Figure 4 This is a schematic diagram of the arc-shaped spring sheet of this utility model.

[0016] In the diagram: 1-U-shaped metal piece, 2-assembly piece, 3-arc-shaped spring piece, 4-control piece, 5-arc-shaped support piece, 6-wiring metal piece, 7-clamping protrusion, 8-limiting groove, 9-arc-shaped clearance groove. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0018] like Figures 1 to 4 As shown, a threadless terminal includes a U-shaped metal piece 1 that can be installed inside a plastic housing. An assembly piece 2 is fixedly installed inside the U-shaped metal piece 1 by rivets. An arc-shaped spring piece 3 is fixedly connected to one end of the assembly piece 2. The open end of the arc-shaped spring piece 3 is located inside the U-shaped metal piece 1. The top end of the arc-shaped spring piece 3 is in contact with the inner wall of the U-shaped metal piece 1. A control piece 4 that is slidably connected to the top end of the arc-shaped spring piece 3 is fixedly connected to the top end of the assembly piece 2 away from the arc-shaped spring piece 3. An arc-shaped support piece 5 is fixedly connected to the end of the assembly piece 2 away from the arc-shaped spring piece 3. The outer surface of the arc-shaped support piece 5 is in contact with the inner wall of the U-shaped metal piece 1. Two symmetrically arranged wiring metal pieces 6 are fixedly connected to the U-shaped metal piece 1.

[0019] As an optional technical solution of this utility model, the U-shaped metal sheet 1, the assembly piece 2, the arc-shaped spring piece 3, the arc-shaped support piece 5, and the wiring metal sheet 6 are all made of copper alloy. Copper alloy has excellent conductivity, which can reduce resistance loss during current transmission and ensure stable and efficient conduction of the terminal. At the same time, copper alloy has good corrosion resistance, which can reduce the performance degradation of the terminal caused by oxidation and corrosion in the use environment, extend the service life of the terminal, and ensure the long-term reliability of the electrical connection.

[0020] As an optional technical solution of this utility model, the top of the U-shaped metal sheet 1 is fixedly connected with a snap-fit ​​protrusion 7. The U-shaped metal sheet 1 is snapped into the plastic shell through the snap-fit ​​protrusion 7. The snap-fit ​​protrusion 7 provides a convenient and stable connection between the terminal and the plastic shell, which can achieve quick assembly without additional fasteners and simplify the installation process. Moreover, the snap-fit ​​structure can effectively limit the displacement of the U-shaped metal sheet 1 in the plastic shell, prevent the terminal from loosening or falling off due to vibration, external force, etc., and ensure the stability of the overall connection between the terminal and the equipment.

[0021] As an optional technical solution of this utility model, a limiting groove 8 is provided on the top of the U-shaped metal sheet 1. The control piece 4 is slidably connected to the U-shaped metal sheet 1 through the limiting groove 8. The limiting groove 8 provides precise guidance for the sliding of the control piece 4, so that the control piece 4 moves along a fixed trajectory during the pressing and resetting process, avoiding the control piece 4 from deviating or getting stuck, ensuring the stable and smooth operation of the pressing control arc spring 3, thereby ensuring the reliability of the terminal wiring and disconnection actions and improving the convenience of terminal use.

[0022] As an optional technical solution of this utility model, two symmetrically arranged arc-shaped clearance grooves 9 are provided on one side of the U-shaped metal sheet 1. The two wiring metal sheets 6 correspond to the two arc-shaped clearance grooves 9 respectively. The arc-shaped clearance grooves 9 of the U-shaped metal sheet 1 are correspondingly arranged with the wiring metal sheets 6. The arc-shaped clearance grooves 9 provide sufficient space for wiring operations, which facilitates the connection of wires or external connectors with the wiring metal sheets 6 and avoids wiring difficulties and poor contact due to narrow space. At the same time, the arc design of the clearance groove can guide and limit the wires, making the wiring more regular and improving the wiring efficiency and connection stability.

[0023] As an optional technical solution of this utility model, the assembly piece 2, the arc-shaped spring piece 3, the arc-shaped support piece 5, and the wiring metal piece 6 are integrally formed by stamping process, which makes the connection between the components tight and the structural strength high. It can effectively resist external impact and vibration, and reduce the risk of loosening and deformation between components. Moreover, the stamping process has high precision, which can ensure the accurate size and position of each component, ensure good internal structural coordination of the terminal, improve the consistency and reliability of the overall performance of the terminal, and facilitate mass production and reduce manufacturing costs.

[0024] As an optional technical solution of this utility model, the snap-fit ​​protrusion 7 and the U-shaped metal sheet 1 are integrally formed. The height of the snap-fit ​​protrusion 7 is adapted to the depth of the plastic shell slot. The snap-fit ​​protrusion 7 and the U-shaped metal sheet 1 are integrally formed and the height is adapted to the plastic shell slot. The integrally formed snap-fit ​​protrusion 7 has high structural strength and is not easy to break or deform, ensuring the long-term reliability of snap-fit ​​with the plastic shell. The height adaptation design allows the snap-fit ​​protrusion 7 to be accurately embedded in the plastic shell slot, realizing a tight and stable connection between the terminal and the shell. This not only ensures assembly efficiency, but also effectively prevents the terminal from shaking inside the shell, improving the overall installation stability of the terminal.

[0025] A type of threadless terminal, the working principle of which is as follows: 1): During assembly, rivets fix the assembly piece 2 inside the U-shaped metal piece 1. Because the assembly piece 2, the arc-shaped spring piece 3, the arc-shaped support piece 5, and the wiring metal piece 6 are stamped as one piece, the connection strength of each component is high.

[0026] 2): The open end of the arc-shaped spring piece 3 is placed inside the U-shaped metal piece 1, and the top end is attached to the inner wall of the U-shaped metal piece 1 to form a two-way support.

[0027] 3): The control piece 4 is slidably connected to the U-shaped metal piece 1 through the limiting groove 8, which restricts the offset of the arc-shaped spring piece 3; the outer surface of the arc-shaped support piece 5 is attached to the inner wall of the U-shaped metal piece 1 to further strengthen the internal structure.

[0028] In summary, during assembly, the rivet secures the assembly piece 2 to the inside of the U-shaped metal sheet 1. Because the assembly piece 2, the arc-shaped spring piece 3, the arc-shaped support piece 5, and the wiring metal sheet 6 are all integrally stamped, the connection strength of each component is high. The open end of the arc-shaped spring piece 3 is placed inside the U-shaped metal sheet 1, with its top end fitting against the inner wall of the U-shaped metal sheet 1, forming bidirectional support. The control piece 4 is slidably connected to the U-shaped metal sheet 1 through the limiting groove 8, limiting the offset of the arc-shaped spring piece 3. The outer surface of the arc-shaped support piece 5 fits against the inner wall of the U-shaped metal sheet 1, further reinforcing the internal structure. During use, the insertion and extraction force is transmitted to the assembly piece 2 and the U-shaped metal sheet 1 through the control piece 4 and the arc-shaped spring piece 3. Due to the integral molding and multi-part fitting and limiting, the components are not easily deformed or loosened. The "integrated molding + multi-part limiting and fitting" design solves the problem of easy deformation and loosening of traditional terminal metal components. The copper alloy material ensures conductivity, and the improved structural stability allows for stable contact even under long-term insertion / removal and vibration conditions, reducing the risk of poor contact and meeting the long-term use requirements of high-reliability electrical equipment. This extends the terminal's lifespan. During terminal installation, the snap-fit ​​protrusion 7 on the top of the U-shaped metal piece 1 allows for quick insertion into the plastic housing without additional fasteners. For wiring, pressing the control piece 4 bends the arc-shaped spring 3; after inserting the wire, releasing the spring 3 causes it to spring back and clamp the wire. The wiring metal piece 6 corresponds to the arc-shaped clearance groove 9, providing space for wiring operations. Due to its one-piece molding structure, the wiring metal piece 6 is precisely positioned, making connection to external wiring easier. The snap-fit ​​protrusion 7 enables quick assembly of the terminal and housing, simplifying the installation process; the limiting groove 8 and arc-shaped clearance groove 9 optimize operating space and guidance, making wiring easier; the one-piece molding structure ensures component positional accuracy, improving assembly and wiring efficiency. Compared to traditional terminals, this reduces installation time, is suitable for automated production lines or operations in confined spaces, and its precise structure reduces wiring error rates, improving the overall reliability of electrical connections.

Claims

1. A threadless terminal, characterized in that: Includes a U-shaped metal sheet (1) that can be installed inside a plastic housing. An assembly piece (2) is fixedly installed inside the U-shaped metal sheet (1) by rivets. An arc-shaped spring piece (3) is fixedly connected to one end of the assembly piece (2). The open end of the arc-shaped spring piece (3) is located inside the U-shaped metal sheet (1). The top end of the arc-shaped spring piece (3) is in contact with the inner wall of the U-shaped metal sheet (1). A control piece (4) that is slidably connected to the top end of the arc-shaped spring piece (3) is fixedly connected to the end of the assembly piece (2) away from the arc-shaped spring piece (3). An arc-shaped support piece (5) is fixedly connected to the outer surface of the arc-shaped support piece (5). The inner wall of the arc-shaped support piece (5) is in contact with the inner wall of the U-shaped metal sheet (1). Two symmetrically arranged wiring metal pieces (6) are fixedly connected to the U-shaped metal sheet (1).

2. A threadless terminal according to claim 1, characterized in that: The U-shaped metal sheet (1), assembly piece (2), arc-shaped spring piece (3), arc-shaped support piece (5), and wiring metal sheet (6) are all made of copper alloy.

3. A threadless terminal according to claim 2, characterized in that: The top of the U-shaped metal sheet (1) is fixedly connected with a snap-fit ​​protrusion (7), and the U-shaped metal sheet (1) is snapped into the plastic shell through the snap-fit ​​protrusion (7).

4. A threadless terminal according to claim 3, characterized in that: The top of the U-shaped metal sheet (1) has a limiting groove (8), and the control piece (4) is slidably connected to the U-shaped metal sheet (1) through the limiting groove (8).

5. A threadless terminal according to claim 4, characterized in that: Two symmetrically arranged arc-shaped clearance grooves (9) are provided on one side of the U-shaped metal sheet (1), and the two wiring metal sheets (6) correspond to the two arc-shaped clearance grooves (9) respectively.

6. A threadless terminal according to claim 5, characterized in that: The assembly piece (2), the arc-shaped spring piece (3), the arc-shaped support piece (5), and the wiring metal piece (6) are integrally formed structures made by stamping process.

7. A threadless terminal according to claim 6, characterized in that: The snap-fit ​​protrusion (7) is integrally formed with the U-shaped metal sheet (1), and the height of the snap-fit ​​protrusion (7) is adapted to the depth of the plastic shell slot.

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