A quick crimping type terminal without stripping

Abstract

The application relates to the technical field of wiring terminals, in particular to a stripping-free rapid crimping type wiring terminal which comprises an insulating shell, a cavity is arranged in the inside of the insulating shell, a conductive sheet is fixedly installed in the inside of the cavity, two groups of conductive frames are rotationally connected to the two sides of the conductive sheet, a wiring assembly for cutting and breaking the insulating skin of a wire and wrapping the conductor is arranged on the conductive frame, the wiring assembly comprises a limiting conductive block and a plurality of conductive springs which are in contact with each other and are located on the two sides of the limiting conductive block; the limiting conductive block with a triangular prism structure and the conductive springs with a spread-eagle distribution can automatically cut and separate the insulating skin of the wire through a cutting blade, the plurality of conductive springs can automatically wrap the conductor according to the wire diameter, the contact area is greatly increased, the resistance is reduced, the stripping-free efficient wiring can prevent the heating and virtual connection, a waterproof sleeve and a rubber pad form double sealing, the harsh environment such as humidity and dustiness can be adapted, and the connection stability and the whole environment safety are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of terminal block technology, and in particular to a strip-free, quick-crimping terminal block. Background Technology

[0002] Terminal blocks are auxiliary components used to achieve electrical connections. They typically consist of an insulating housing and conductive parts, and can detachably and assemble wires, electrical components, equipment interfaces, etc. They have functions of fixing, conducting current, and providing insulation protection. They are widely used in power, electronic, and electrical equipment to simplify wiring operations and ensure the reliability and safety of circuit connections.

[0003] In actual wiring operations, traditional terminal blocks generally require operators to manually strip the insulation from the ends of the wires using tools, which is cumbersome and inefficient. At the same time, conventional piercing or crimping terminal blocks have a relatively simple structure, mostly only suitable for wires of fixed diameters. They cannot adapt to wires of different diameters for stable bonding, which can easily lead to insufficient conductive contact area and high contact resistance. This can cause circuit overheating, loose connections, and unstable conductivity, seriously affecting the reliability and safety of electrical connections.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that uses a triangular prism-structured limiting conductive block and figure-eight distributed conductive springs to automatically cut and separate the wire insulation via a tangential cutting edge. Multiple conductive springs adaptively wrap the conductor according to the wire diameter, significantly increasing the contact area, reducing resistance, enabling efficient wiring without stripping, and preventing overheating and loose connections. Summary of the Invention

[0005] The purpose of this invention is to provide a strip-free, quick-crimping terminal block to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: a stripping-free quick-connection terminal block, comprising an insulating shell, an internal cavity provided in the insulating shell, and wire inlet holes penetrating the insulating shell on both sides of the cavity, a conductive sheet fixedly installed inside the cavity, and two sets of conductive frames rotatably connected to both sides of the conductive sheet, wherein a wiring assembly is provided on the conductive frame for cutting the insulation of the wire and wrapping and contacting the conductor, the wiring assembly comprising a limiting conductive block and multiple conductive springs in contact with each other on both sides of the limiting conductive block.

[0007] Preferably, the limiting conductive block has a triangular prism structure and is fixedly connected to the conductive frame. Multiple conductive spring strips are fixedly connected at equal intervals on both sides of the limiting conductive block on the conductive frame, and the conductive spring strips are fixedly connected to the corresponding conductive spring sheets.

[0008] Preferably, the conductive springs located on both sides of the limiting conductive block are arranged in an eight-shaped pattern, and the bottom of the two outermost conductive springs are provided with mutually abutting tangential cutting edges.

[0009] Preferably, an insulating cover that is slidably connected to the cavity is fixedly installed on the conductive frame, and the insulating cover is provided with a locking turntable that cooperates with the insulating shell to clamp and lock the conductor by the two sets of conductive frames.

[0010] Preferably, the locking turntable has a capsule-shaped structure, the insulating cover has a rotating groove that is rotatably connected to the locking turntable, and the inner wall of the cavity has a limiting groove that is adapted to the locking turntable. One side of the locking turntable is integrally formed with several anti-slip ridges.

[0011] Preferably, a gear is rotatably connected to the inner wall of the cavity, and an arc-shaped rack that meshes with the gear is fixedly connected to the insulating cover on both sides of the gear. A torsion spring is installed between the gear and the inner wall of the cavity.

[0012] Preferably, a waterproof sleeve is embedded inside the inlet hole, and a rubber pad that slides and connects with the inner wall of the cavity is embedded on the surface of the insulating cover.

[0013] Preferably, the waterproof sleeve includes a rubber sleeve and rubber rings equidistantly distributed along the axial direction on the inner wall of the rubber sleeve, wherein the rubber rings are integrally formed with the rubber sleeve.

[0014] The beneficial effects of this invention are as follows:

[0015] (1) The present invention uses a triangular prism limiting conductive block in conjunction with multiple sets of conductive springs arranged in a figure-eight pattern, as well as the tangential cutting edge on the two outer sets of conductive springs. During the wire clamping process, it can automatically cut the insulation sheath and separate it from the conductor. Multiple sets of conductive springs expand outward in sequence and fit tightly against the conductor surface. It can adapt to wires of different diameters and form a large-area wrapping conductive contact, effectively increasing the conductive contact area and reducing the contact resistance. It not only saves the stripping process and improves the wiring efficiency, but also avoids problems such as heat generation and loose connection caused by poor contact, and greatly improves the stability and conductivity reliability of electrical connection.

[0016] (2) This invention achieves synchronous and symmetrical deflection of the insulating covers and conductive frame on both sides through the linkage of gears, arc racks and torsion springs, ensuring that the insulation on both sides of the conductor is cut synchronously and effectively, so that the insulation can be smoothly separated from the conductor, and the conductive spring can effectively contact the conductor; in addition, the capsule-shaped locking turntable and the limiting slot lock the position, quickly realizing the fixation of the wiring state. The operation is simple and the locking is firm, which can effectively resist the risk of loosening caused by external pulling force and equipment vibration. At the same time, the waterproof sleeve with multi-level rubber rings built into the inlet hole and the rubber gasket at the insulating cover form a double sealing structure, which realizes multi-level waterproof, dustproof and anti-loosening protection after the conductor is connected, improving the safety and service life of the terminal in humid, dusty and vibrating conditions. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the insulating shell of the present invention;

[0020] Figure 3 This is a schematic diagram of the gear structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the insulating shell of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection between the conductive frame and the insulating cover of the present invention;

[0023] Figure 6 This is a schematic diagram showing the installation and distribution of the limiting conductive block and the conductive spring sheet of the present invention.

[0024] Legend:

[0025] 1. Insulating shell; 11. Cavity; 12. Cable inlet; 13. Limiting slot; 14. Gear; 15. Torsion spring; 16. Rubber sleeve; 17. Rubber ring;

[0026] 2. Conductive sheet; 21. Conductive frame; 22. Limiting conductive block; 23. Conductive spring; 24. Conductive spring strip; 25. Cutting edge;

[0027] 3. Insulating cover; 31. Locking turntable; 32. Arc-shaped rack. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figures 1-6 As shown, the process of pre-stripping the insulation from the ends of wires is cumbersome and inefficient; moreover, it is mostly only compatible with wires of a fixed diameter and cannot stably fit wires of different diameters, easily leading to insufficient conductive contact area and high contact resistance. The following solutions can address these issues:

[0030] This embodiment of a stripping-free quick-connection terminal block includes an insulating housing 1. The insulating housing 1 has a cavity 11 inside, which extends through the top and bottom sides of the insulating housing 1 for the installation of an insulating cover 3 to facilitate the deflection of the drive conductive frame 21 to complete the wire connection. Both sides of the cavity 11 have inlet holes 12 that extend through the insulating housing 1. A conductive sheet 2 is fixedly installed inside the cavity 11, and two sets of conductive frames 21 are rotatably connected to both sides of the conductive sheet 2. The conductive sheet 2 is used to connect multiple conductive frames 21 inside the cavity 11, and after the auxiliary conductive frame 21 is connected to the wire, it facilitates the connection of the two sets of wires.

[0031] The conductive frame 21 is equipped with a wiring assembly for cutting the insulation of the wire and wrapping the conductor in contact. The wiring assembly includes a limiting conductive block 22 and multiple conductive springs 23 that are in contact with each other on both sides of the limiting conductive block 22. By tightly fitting multiple sets of conductive springs 23 against the surface of the conductor, it can adapt to wires of different diameters and form a large-area wrapping conductive contact, effectively increasing the conductive contact area, reducing contact resistance, avoiding problems such as overheating and poor connection caused by poor contact, and greatly improving the stability and conductivity reliability of the electrical connection.

[0032] The limiting conductive block 22 has a triangular prism structure and is fixedly connected to the conductive frame 21. The limiting conductive block 22 with triangular prism structure is used to push multiple conductive spring pieces 23 to expand outward in sequence and fit tightly against the conductor surface, adapting to wires of different diameters. Multiple conductive spring strips 24 are fixedly connected at equal intervals on the conductive frame 21 and on both sides of the limiting conductive block 22. The conductive spring strips 24 are fixedly connected to the corresponding conductive spring pieces 23. The conductive spring strips 24 are used to connect the conductive spring pieces 23 and the conductive frame 21, and the bending deformation of the conductive spring strips 24 assists in the contact between the multiple conductive spring pieces 23 and the arc surface of the conductor.

[0033] The conductive springs 23 located on both sides of the limiting conductive block 22 are arranged in an eight-shaped pattern. The bottom of the two outermost conductive springs 23 is provided with mutually abutting tangential cutting edges 25. The tangential cutting edges 25 are used to strip the insulation of the hard core wire. The two sets of conductive frames 21 deflect relative to each other. The conductive springs 23 on the conductive frames 21 and located on both sides of the limiting conductive block 22 clamp and abut against the wire. The insulation of the wire is cut through the tangential cutting edges 25 on the corresponding conductive springs 23. The two sets of outer conductive springs 23 abut against the inner conductor, which is a hard conductor, so that the conductive springs 23 on both sides of the limiting conductive block 22 can be smoothly expanded and deflected.

[0034] As the limiting conductive block 22 continues to descend, it causes the two sets of outer conductive spring strips 24 to bend and deform. Simultaneously, the triangular prism structure of the limiting conductive block 22 causes the free side of the conductive spring piece 23 to undergo expansion deformation, and pushes the cut insulation skin to separate from the conductor. This causes multiple conductive spring pieces 23 on both sides of the limiting conductive block 22 to contact the conductor from the outside to the inside. The multiple conductive spring pieces 23 form a wrapping clamping contact with conductors of different wire diameters, increasing the wiring contact area.

[0035] An insulating cover 3 is fixedly installed on the conductive frame 21 and slidably connected to the cavity 11. It is used to deflect the two sets of conductive frames 21 relative to each other. The insulating cover 3 is provided with a locking turntable 31 that cooperates with the insulating shell 1 to make the two sets of conductive frames 21 clamp and lock the conductor.

[0036] The locking turntable 31 has a capsule-shaped structure. The insulating cover 3 has a rotating groove that is rotatably connected to the locking turntable 31. The inner wall of the cavity 11 has a limiting slot 13 that is adapted to the locking turntable 31. After the insulating cover 3 slides into the insulating housing 1, the locking turntable 31 on the insulating cover 3 is rotated so that the arc edge on the locking turntable 31 rotates into the limiting slot 13, thereby locking the rotation clamp of the two sets of conductive frames 21, quickly realizing the fixation of the wiring state. The operation is simple and the locking is firm. It can effectively resist the risk of loosening caused by external force pulling and equipment vibration. One side of the locking turntable 31 is integrally formed with several anti-slip ridges to assist the anti-slip property of the insulating cover 3 when the locking turntable 31 is compressed.

[0037] Gear 14 is rotatably connected to the inner wall of cavity 11. Arc-shaped racks 32 that mesh with gear 14 are fixedly connected to the insulating covers 3 on both sides of gear 14. Pressing the insulating covers 3 on the top and bottom sides of insulating housing 1, combined with gear 14 and two sets of arc-shaped racks 32 that are staggered and mesh with it, causes the two sets of insulating covers 3 to rotate synchronously relative to each other with the corresponding conductive frame 21, ensuring that the insulation on both sides of the wire is cut synchronously and effectively, so that the insulation can be smoothly separated from the conductor, and the conductive spring 23 can effectively contact the conductor.

[0038] A torsion spring 15 is installed between the gear 14 and the inner wall of the cavity 11. It is used to assist the two sets of insulating covers 3 in resetting when the arc edge on the turntable 31 is separated from the limiting slot 13, and to maintain the two sets of insulating covers 3 in a non-contact state before wiring, thereby improving the protection of the tangential cutting edge 25 on the conductive spring 23.

[0039] Example 2: Please refer to Figure 2 and Figure 4 As shown, the following solutions address the problem of poor waterproofing and dustproofing in humid and dusty environments due to the lack of a proper sealing structure, which makes it difficult to guarantee the stability of electrical connections and the safety of use:

[0040] In this embodiment, a waterproof sleeve is embedded inside the inlet hole 12, and a rubber pad that slides and connects with the inner wall of the cavity 11 is embedded on the surface of the insulating cover 3. The rubber pad is used to increase the sealing between the insulating cover 3 and the insulating shell 1.

[0041] The waterproof sleeve includes a rubber sleeve 16 and rubber rings 17 equidistantly distributed along the axial direction on the inner wall of the rubber sleeve 16. The rubber rings 17 and the rubber sleeve 16 are integrally formed. One end of the wire passes through the waterproof sleeve in the inlet hole 12 and enters the cavity 11. The multiple rubber rings 17 on the inner wall of the waterproof sleeve abut against the wire insulation, which is used for multi-level waterproof connection after the wire is threaded. With the rubber pad, multi-level waterproof, dustproof and anti-loosening protection is achieved after the wire is connected, which improves the safety and service life of the terminal under humid, dusty and vibrating conditions.

[0042] Example 3: Please refer to Figures 1-6 As shown, the present invention also proposes a method for using a stripping-free quick-crimping terminal block, comprising the following steps:

[0043] Step 1: One end of the wire passes through the waterproof sleeve in the inlet hole 12 into the cavity 11. Multiple rubber rings 17 on the inner wall of the waterproof sleeve abut against the wire insulation, which is used for multi-level waterproof connection after the wire is threaded. Press the insulating caps 3 on the top and bottom sides of the insulating shell 1. The gear 14 and two sets of arc-shaped racks 32 that are staggered and mesh with it cause the two sets of insulating caps 3 to rotate synchronously relative to the corresponding conductive frame 21. The conductive springs 23 on the two sets of conductive frames 21 and located on both sides of the limiting conductive block 22 clamp and abut against the wire. The insulation of the wire is cut by the cutting edge 25 on the corresponding conductive spring 23.

[0044] Step 2: The two sets of outer conductive springs 23 contact the inner conductor, and as the limiting conductive block 22 continues to descend, it causes the two sets of outer conductive spring strips 24 to bend and deform. At the same time, the triangular prism structure of the limiting conductive block 22 causes the free side of the conductive springs 23 to undergo expansion deformation, and pushes the cut insulation to separate from the conductor. As a result, multiple conductive springs 23 on both sides of the limiting conductive block 22 contact the conductor from the outside to the inside. The multiple conductive springs 23 form a wrapping clamping contact with conductors of different wire diameters, increasing the wiring contact area.

[0045] Step 3: After the insulating cover 3 slides into the insulating housing 1, rotate the locking turntable 31 on the insulating cover 3 so that the arc edge on the locking turntable 31 rotates into the limit slot 13, thereby locking the rotation clamp of the two sets of conductive frames 21 and maintaining the stability of the wiring.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stripping-free quick-connect crimp terminal block, comprising an insulating housing (1), characterized in that, The insulating shell (1) has a cavity (11) inside, and both sides of the cavity (11) have inlet holes (12) that penetrate the insulating shell (1). A conductive sheet (2) is fixedly installed inside the cavity (11), and two sets of conductive frames (21) are rotatably connected to both sides of the conductive sheet (2). The conductive frame (21) is provided with a wiring assembly for cutting the insulation of the wire and wrapping the conductor. The wiring assembly includes a limiting conductive block (22) and multiple conductive springs (23) that are in contact with each other on both sides of the limiting conductive block (22).

2. The stripping-free quick-connect crimp terminal block according to claim 1, characterized in that, The limiting conductive block (22) has a triangular prism structure and is fixedly connected to the conductive frame (21). Multiple conductive spring strips (24) are fixedly connected at equal intervals on the conductive frame (21) and on both sides of the limiting conductive block (22), and the conductive spring strips (24) are fixedly connected to the corresponding conductive spring pieces (23).

3. The stripping-free quick-connect crimp terminal block according to claim 2, characterized in that, The conductive springs (23) located on both sides of the limiting conductive block (22) are arranged in an eight-shaped pattern, and the bottom of the two outermost conductive springs (23) are provided with mutually abutting tangential cutting edges (25).

4. The stripping-free quick-connect crimp terminal block according to claim 1, characterized in that, An insulating cover (3) that is slidably connected to the cavity (11) is fixedly installed on the conductive frame (21). The insulating cover (3) is provided with a locking turntable (31) that cooperates with the insulating shell (1) to cause the two sets of conductive frames (21) to clamp and lock the conductor.

5. The stripping-free quick-crimping terminal block according to claim 4, characterized in that, The locking turntable (31) has a capsule-shaped structure. The insulating cover (3) has a rotating groove that is rotatably connected to the locking turntable (31). The inner wall of the cavity (11) has a limiting slot (13) that is compatible with the locking turntable (31). One side of the locking turntable (31) has several anti-slip ridges integrally formed.

6. A stripping-free quick-crimping terminal block according to claim 4, characterized in that, A gear (14) is rotatably connected to the inner wall of the cavity (11). An arc-shaped rack (32) that meshes with the gear (14) is fixedly connected to the insulating cover (3) on both sides of the gear (14). A torsion spring (15) is installed between the gear (14) and the inner wall of the cavity (11).

7. A stripping-free quick-connect crimp terminal block according to claim 4, characterized in that, A waterproof sleeve is embedded inside the inlet hole (12), and a rubber pad that slides and connects with the inner wall of the cavity (11) is embedded on the surface of the insulating cover (3).

8. A stripping-free quick-connect crimp terminal block according to claim 7, characterized in that, The waterproof sleeve includes a rubber sleeve (16) and rubber rings (17) distributed equidistantly along the axial direction on the inner wall of the rubber sleeve (16), wherein the rubber rings (17) are integrally formed with the rubber sleeve (16).

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