Quick disconnect terminal block and terminal strip

Abstract

The utility model relates to electrical connection technical field especially a kind of quick plug-in wiring terminal device and wiring terminal row.The quick plug-in wiring terminal device includes wiring holder, conductive copper sheet, plunger and hard conductive metal, hard conductive metal is installed in plunger, its one end is cutting section, is equipped with cutting edge, sawtooth and elastic deformation part;The other end is connecting section, and end portion is equipped with spherical contact head;Conductive copper sheet is door type structure, and its below is equipped with vibration damping washer, plunger is locked by the female limiting structure of the public limiting structure on it and the female limiting structure of wiring holder buckling;When using, cable with insulating layer is directly inserted, plunger is pressed down, and hard conductive metal can be driven to pierce insulating layer and engage locking, while buffering through elastic deformation part, spherical contact head and conductive copper sheet are tightly engaged, realize stripping-free, fast and reliable connection.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a quick-plug terminal block device and a terminal block. Background Technology

[0002] In the field of electrical connections, terminal blocks are key components for ensuring reliable connection and disconnection of wires. There are two traditional wiring methods. The first is screw connection, which requires tightening screws one by one using a screwdriver or similar tool, a cumbersome and time-consuming process. It is extremely inefficient, especially when connecting multiple wires or performing frequent connection and disconnection operations. Over time, the screws can loosen, leading to poor contact, electrical faults, and affecting equipment safety. The second method is soldering connection, which provides a more stable connection, but the soldering process requires specialized equipment and skills, making it more difficult to operate. Disassembling and replacing wires after soldering is very difficult, hindering equipment maintenance and upgrades. Furthermore, the high temperatures generated during soldering can damage surrounding electronic components, posing a safety hazard.

[0003] To overcome the above problems, pluggable quick-connect terminals have appeared on the market. These terminals have improved wiring efficiency and simplified operation to some extent. However, they still have the following shortcomings in practical use: a. Some pluggable terminals require a large insertion and extraction force, making operation less smooth and easily causing operator fatigue, and may even damage the terminals or wires; b. Some terminals have an unreasonable structural design. After frequent insertion and removal, their locking mechanism or conductive parts are prone to wear and deformation, resulting in decreased connection reliability and increased contact resistance.

[0004] c. Most existing quick-connect terminals still require pre-stripping of the wire insulation, failing to truly achieve stripping-free operation, and lack an effective design to maintain stable connection under vibration.

[0005] Therefore, there is an urgent need for a terminal block device that can achieve quick plugging and unplugging without wire stripping, and has high reliability, long life and easy operation, so as to meet the higher requirements of modern electrical equipment for connection efficiency and stability. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a quick plug-in / plug-out terminal block device to address the issues of poor user experience, insufficient reliability, and limited functionality in the existing technology mentioned above.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a quick-plug terminal block device, comprising: The terminal block has an inlet hole at its front end for the cable to pass through; A conductive copper sheet is fixedly disposed inside the terminal block; A lever is rotatably disposed in a terminal block. The end of the lever is provided with a protruding male limiting structure, and the terminal block is provided with a recessed female limiting structure that cooperates with the male limiting structure at a corresponding position. A hard conductive metal is installed inside the lever and extends out of the lever at both ends. The hard conductive metal includes a cutting segment and a connecting segment connected in sequence. The cutting segment is located on one side of the lever and has a cutting edge on its inner edge. The connecting segment is located on the other side of the lever and its end is in contact with a conductive copper sheet.

[0008] The terminal block and its inlet hole provide the channel for wire entry and the mounting carrier for all internal components, determining the external interface form and installation method of the terminals. The fixed conductive copper sheet serves as the common conductive position for the entire terminal device, providing a low-resistance and stable current flow path and acting as the carrier for realizing electrical functions. The rotatable lever and male / female limiting structure enable quick insertion and removal; the connection status can be controlled simply by pressing or lifting the lever with a finger, completely eliminating the need for external tools such as screwdrivers. The cooperation of the male and female limiting structures provides clear and reliable mechanical locking and unlocking feedback at the end of the operation, preventing loose connections caused by misjudgment. The hard conductive metal installed inside the lever is integrated into the movable lever. The cutting edge on the inner edge of the cutting section will actively pierce the wire insulation layer during the downward pressing of the lever, and the end of the connection section will directly contact the fixed conductive copper sheet, thereby connecting the wire to the circuit.

[0009] According to one embodiment of the present invention, there are two symmetrically arranged paddles, and each paddle has two hard conductive metals arranged in front and behind along the cable insertion direction.

[0010] Two symmetrically arranged levers allow wires to be inserted simultaneously from both the left and right sides. Each lever has two rigid conductive metal parts located at the front and back along the cable insertion direction, which can form a more stable clamp.

[0011] Furthermore, each of the cut segments of the hard conductive metal has a triangular cross-section, with the cutting edge located at the top of the triangle and serrations on both sides of the base of the triangle.

[0012] When two rigid conductive metals are pressed down from the front and rear sides of the conductor, their bevels guide the cable to center. As the pressing depth increases, an increasing radial clamping force is generated. The apex of the triangle is the sharpest, first contacting and piercing the insulation layer, ensuring ease of penetration. Once the insulation layer is pierced, the serrations embed into the insulation material. Due to the directional design of the serrations, the rigid conductive metals can move with less resistance relative to the cable when moving downwards, but strongly resist the upward pulling of the cable, thus forming a reliable locking effect and effectively preventing the conductor from loosening due to external force or vibration.

[0013] According to one embodiment of the present invention, the hard conductive metal is integrally shaped as " The cut segment and the connecting segment are perpendicular to each other.

[0014] This design adapts to the rotational movement of the paddle, achieving a compact structure. The rotation center of the paddle, the point of action of the cutting section, and the point of action of the connecting section form a lever system, optimizing the conversion between operating force and contact force. The vertical layout allows the stress generated when the cutting section performs mechanical piercing and locking functions to be spatially separated from the stress generated when the connecting section performs electrical contact functions, reducing mutual interference.

[0015] According to one embodiment of the present invention, the end of the connecting segment is provided with a spherical contact head, and the conductive copper sheet is provided with a contact concave surface that mates with the spherical contact head at the corresponding position.

[0016] The concave surface and the ball head cooperate to form an adaptive positioning contact pair. Even with certain assembly tolerances or long-term wear, the ball head can automatically adjust its position within the concave surface to always maintain a good contact state.

[0017] Furthermore, the connecting segment is provided with an elastic deformation section near the spherical contact head.

[0018] After the lever is locked, the elastic deformation part is in a compressed or bent state, and its restoring force continues to act on the spherical contact head, ensuring that there is always sufficient positive pressure between it and the concave surface of the conductive copper sheet to resist pressure relaxation that may be caused by vibration and thermal expansion and contraction. In addition, during long-term use, the contact surface will experience micro-wear, and the presence of the elastic deformation part can compensate for the small amount of wear, keep the contact pressure basically unchanged, and thus maintain the stability of the contact resistance. Furthermore, in a vibrating environment, micro-relative movement will occur at the connection point, and the elastic deformation part can absorb this micro-kinetic energy, buffer the impact, and reduce the occurrence of fretting wear.

[0019] According to one embodiment of the present invention, the conductive copper sheet has a gate-shaped structure, and the terminal block is provided with a vibration damping pad located below the conductive copper sheet.

[0020] The portal structure provides a stable support frame for internal components, preventing overall deformation caused by external stress and affecting contact alignment; vibration damping pads can protect the internal structure when subjected to impact.

[0021] According to one embodiment of the present invention, the male limiting structure is a cylindrical boss, and the female limiting structure is a cylindrical groove.

[0022] When the lever is pressed down to its end, the cylindrical boss slides into the groove, producing a noticeable sudden change in force and usually accompanied by a slight knocking sound, providing the operator with auditory and tactile feedback so that they can clearly know that the connection has been reliably locked.

[0023] A terminal block is also provided, including multiple quick-plug terminal devices as described above, wherein the terminal blocks of the multiple quick-plug terminal devices are integrally formed or detachably connected.

[0024] The beneficial effects of this utility model are: By utilizing hard conductive metals with triangular transverse cross sections set at the front and rear, a highly efficient wedge-shaped self-increasing force clamping structure is formed. This structure generates radially increasing clamping force during the pressing process. Combined with the sawtooth structure on the cutting section, it achieves bidirectional interlocking and reliable anchoring of the cable insulation layer, providing excellent vibration resistance and pull-out resistance, and preventing the conductor from loosening. The fit between the spherical contact head and the contact concave surface ensures low-resistance and stable point contact even with assembly tolerances; while the elastic deformation part set on the connecting section continuously provides and maintains optimal contact pressure after locking, ensuring long-term stability of contact resistance. The vibration damping pad located below the conductive copper sheet can efficiently absorb and dissipate externally transmitted mechanical vibration and impact energy. The locking fit between the cylindrical boss and the groove not only provides clear click-locking feedback, but its uniform contact stress distribution also ensures the wear resistance of the locking mechanism itself under frequent operation, extending its service life. Each terminal unit is compact and performs well. By integrating multiple such units into one piece or connecting them detachably, the terminal block achieves linear expansion of functionality. Users can flexibly select a single terminal or terminal blocks of different lengths according to the actual number of wires to build a neat, standardized, and highly reliable modular wiring system. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the quick-plug terminal block device of this utility model.

[0027] Figure 2 yes Figure 1 Sectional view in the AA direction.

[0028] Figure 3 yes Figure 2 Sectional view in the BB direction.

[0029] Figure 4 This is a schematic diagram of the quick-plug terminal block device of this utility model in the open state of the lever.

[0030] Figure 5 yes Figure 4 Sectional view in the CC direction.

[0031] Figure 6 This is a schematic diagram of the terminal block structure of this utility model.

[0032] In the diagram: 1. Terminal block; 11. Inlet hole; 12. Female limiting structure; 2. Conductive copper sheet; 21. Contact concave surface; 3. Paddle; 31. Male limiting structure; 4. Hard conductive metal; 41. Cutting section; 411. Cutting edge; 412. Elastic deformation part; 413. Serration; 42. Connecting section; 421. Spherical contact head; 5. Vibration damping pad. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0034] Example 1 like Figure 1 and Figure 2 As shown, a quick-plug terminal block device includes a terminal block 1, a conductive copper sheet 2, a lever 3, and a rigid conductive metal 4. The terminal block 1 has an inlet hole 11 for a cable to pass through at its front end. The conductive copper sheet 2 is fixedly installed inside the terminal block 1. The lever 3 is rotatably installed inside the terminal block 1. The end of the lever 3 has a protruding male limiting structure 31. The terminal block 1 has a corresponding recessed female limiting structure 12 that cooperates with the male limiting structure 31. The rigid conductive metal 4 is installed inside the lever 3 and extends out of the lever 3 at both ends. The rigid conductive metal 4 includes a cutting section 41 and a connecting section 42 connected in sequence. The cutting section 41 is located on one side of the lever 3 and has a cutting edge 411 on its inner edge. The connecting section 42 is located on the other side of the lever 3 and its end contacts the conductive copper sheet 2.

[0035] The conductive copper sheet 2 has a gate-shaped structure, and the terminal block 1 contains a vibration damping pad 5 located below the conductive copper sheet 2. Two levers 3 are symmetrically arranged, and each lever 3 contains two rigid conductive metal pieces 4 arranged front and rear along the cable insertion direction. The male limiting structure 31 is a cylindrical boss, and the female limiting structure 12 is a cylindrical groove. The rigid conductive metal pieces 4 are generally shaped like a "..." The cut section 41 and the connecting section 42 are perpendicular to each other. The end of the connecting section 42 is provided with a spherical contact head 421, and the conductive copper sheet 2 is provided with a contact concave surface 21 that mates with the spherical contact head 421 at the corresponding position. An elastic deformation part 412 is provided on the connecting section 42 near the spherical contact head 421.

[0036] Specifically, the quick-connect terminal block device of this embodiment includes a terminal block 1, two levers 3, four rigid conductive metals 4, and one conductive copper sheet 2. The terminal block 1 is used to install the levers 3 and the conductive copper sheet 2, and also provides a cable inlet hole 11. Each terminal block 1 has two cylindrical grooves (female limiting structure 12) at its end. The levers 3 are symmetrically arranged left and right within the terminal block 1, each lever 3 has two rigid conductive metals 4 embedded in it, and each lever 3 has two cylindrical bosses (male limiting structure 31) at its end. When the lever 3 is fully pressed down, the bosses at the front and rear of the lever 3 close with the grooves on the terminal block 1, and the lever 3 is locked.

[0037] like Figure 3 As shown, the cross-section of the cutting section 41 is triangular, with the cutting edge 411 located at the top of the triangle and serrations 413 on both sides of the base of the triangle. Two hard conductive metals 4 are arranged front and rear inside each lever 3, and the inclined surfaces of their triangular cross-sections cooperate with each other to form a wedge mechanism that clamps the cable from the front and rear direction when the lever 3 is pressed down, so that the cable is firmly locked.

[0038] The elastic deformation part 422, provided on the connecting section 42, undergoes elastic deformation during the pressing of the lever 3. Its functions are twofold: first, to buffer the contact impact, making operation smoother and less strenuous; and second, to provide continuous restoring force after locking, ensuring that the spherical contact head 421 remains tightly pressed against the contact concave surface 21 of the conductive copper sheet 2, achieving an adaptive, low-resistance electrical connection. The elastic deformation part 422 can be implemented using a wave-shaped structure, a bent spring sheet structure, or a partially thinned structure.

[0039] The copper core of the cable is connected to the conductive copper sheet 2 through two parallel paths. The main path involves the copper core directly contacting the bottom surface of the conductive copper sheet 2; the redundant path involves the copper core being connected to the conductive copper sheet 2 through a rigid conductive metal 4. This dual-path connection significantly improves connection reliability. Simultaneously, the vibration damping pad 5 absorbs externally transmitted mechanical vibration energy, preventing wear or loosening of contact points due to fretting.

[0040] like Figure 4 and Figure 5 As shown, when the lever 3 is opened upwards, the hard conductive metal 4 rotates upwards with the lever 3; when the lever 3 is pressed down, the hard conductive metal 4 is pressed downwards with the lever 3; during the pressing process, the cutting edge 411 of the cutting section 41 pierces the cable insulation layer and forms a tight contact with the cable copper core wire, and the serrations 413 bite into the insulation layer. When fully pressed down, the male limiting structure 31 and the female limiting structure 12 engage and lock. At this time, the spherical contact head 421 is in close contact with the contact concave surface 21, and the cutting section 41 also maintains reliable contact with the cable copper core wire.

[0041] Specific work process: Initially, paddle 3 is in the open position (e.g., Figure 4 ,5 The insulated cable is directly inserted into the inlet hole 11. After both cables are inserted, the copper core of the cable initially contacts the bottom surface of the conductive copper sheet 2, and the circuit on both sides is temporarily connected but not locked. At this time, the lever 3 is pressed, and the lever 3 drives the hard conductive metal 4 to rotate downward. During the pressing process, the cutting segments 41 of the two hard conductive metals 4 set at the front and rear act simultaneously: the cutting edge 411 at the top of its triangular cross section pierces the cable insulation layer, and the serration 413 then bites the insulation layer and forms a front and rear clamp; at the same time, the connecting segment 42 moves towards the conductive copper sheet 2, and the spherical contact head 421 at its end gradually presses into the contact concave surface 21. The elastic deformation part 422 on the connecting segment 42 undergoes elastic deformation to store energy; when the lever 3 moves to the end point, the male limit structure 31 clicks into the female limit structure 12, and the device is locked; after locking, the residual restoring force of the elastic deformation part 422 maintains the tight contact between the spherical contact head 421 and the contact concave surface 21, and at the same time, through " The shape structure also helps maintain the clamping force of the cut section 41 on the cable.

[0042] Example 2 like Figure 6 As shown, a terminal block includes multiple quick-plug terminal devices according to Embodiment 1. The terminal blocks 1 of the multiple quick-plug terminal devices can be integrally formed or detachably connected by means of clips, screws, etc., to form a multi-circuit, high-density wiring solution suitable for distribution boxes, control cabinets, and other applications.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A quick-plug terminal block device, characterized in that, include: The terminal block (1) has an inlet hole (11) at its front end for the cable to pass through. A conductive copper sheet (2) is fixedly disposed inside the terminal block (1); The lever (3) is rotatably disposed in the terminal block (1). The end of the lever (3) is provided with a protruding male limiting structure (31), and the terminal block (1) is provided with a recessed female limiting structure (12) that cooperates with the male limiting structure (31) at the corresponding position. Hard conductive metal (4) is installed inside the lever (3) and extends out of the lever (3) at both ends. The hard conductive metal (4) includes a cutting section (41) and a connecting section (42) connected in sequence. The cutting section (41) is located on one side of the lever (3) and its inner edge is provided with a cutting edge (411). The connecting section (42) is located on the other side of the lever (3) and its end is in contact with the conductive copper sheet (2).

2. The quick-connect terminal block device according to claim 1, characterized in that: The paddles (3) are two in number and symmetrically arranged. Each paddle (3) has two hard conductive metals (4) arranged in front and behind along the cable insertion direction.

3. The quick-connect terminal block device according to claim 2, characterized in that: Each of the cut segments (41) of the hard conductive metal (4) has a triangular cross-section, with the cutting edge (411) located at the top of the triangle and serrations (413) on both sides of the base of the triangle.

4. The quick-connect terminal block device according to claim 1, characterized in that: The hard conductive metal (4) is generally in the shape of " The cut segment (41) and the connecting segment (42) are perpendicular to each other.

5. The quick-connect terminal block device according to claim 1, characterized in that: The end of the connecting section (42) is provided with a spherical contact head (421), and the conductive copper sheet (2) is provided with a contact concave surface (21) that cooperates with the spherical contact head (421) at the corresponding position.

6. The quick-connect terminal block device according to claim 5, characterized in that: An elastic deformation part (422) is provided on the connecting section (42) near the spherical contact head (421).

7. The quick-connect terminal block device according to claim 1, characterized in that: The conductive copper sheet (2) has a gate-shaped structure, and the terminal block (1) is provided with a vibration damping pad (5) located below the conductive copper sheet (2).

8. The quick-connect terminal block device according to claim 1, characterized in that: The male limiting structure (31) is a cylindrical boss, and the female limiting structure (12) is a cylindrical groove.

9. A terminal block, characterized in that, It includes multiple quick-plug terminal blocks as described in any one of claims 1-8, wherein the terminal blocks (1) of the multiple quick-plug terminal blocks are integrally formed or detachably connected.

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