A wiring terminal capable of quick wiring

Abstract

The utility model relates to a wiring terminal, specifically, a wiring terminal capable of quick wiring. The utility model discloses a shell, both sides of the shell are fixedly provided with wiring port. The utility model discloses, after the wire core is inserted into the inside of U type metal sheet, through the manual rotation of the rotating column outside the shell, the two side plates fixed on the insertion rod are driven and synchronously rotate, the two side plates slide along the first inclined plane of the corresponding accommodating groove respectively in the rotating process, the cylinder and the pressing rod are pushed to the direction of moving close to the U type metal sheet, when the side plate rotates to the end face and the end face of the cylinder far from the pressing rod completely contact, the pressing rod end has fully pressed the end of the U type metal sheet far from the mounting base, force the U type metal sheet to have the significant elastic deformation, the two elastic side walls of the U type metal sheet tightly hold the wire core inserted at this moment, effectively prevent the wire core to escape under the action of external force, thereby realize the quick reliable wiring of the wire.

Description

Technical Field

[0001] This utility model relates to a terminal block, specifically, to a terminal block that allows for quick wiring. Background Technology

[0002] Terminal blocks are common basic accessories used to achieve electrical connections. They belong to the category of industrial connectors, and their core function is to ensure the effective transmission of signals and current, thereby enabling the circuit to perform its intended function.

[0003] Currently, mainstream terminal blocks are mainly divided into two categories according to their wiring method: bolt-clamping type and spring-clamping type. The working principle of spring-clamping type (quick terminal block) is that after the wire is inserted, it is clamped in the conductor by the rebound force of the built-in elastic plate. However, this clamping mechanism that relies solely on the elasticity of the spring itself has a significant inherent defect compared to the bolt-clamping method: the initial clamping force it generates is often low and difficult to maintain for a long time. This leads to the potential risk that the wire may be accidentally pulled out of the conductor if it is subjected to unexpected external force (such as pulling or vibration) after installation, which constitutes a safety hazard that cannot be ignored.

[0004] If bolts are used to secure the wires, while providing strong and adjustable clamping force to ensure a secure and reliable connection, it inevitably requires the use of specialized tools such as screwdrivers to tighten the bolts. This method also presents significant operational drawbacks: Firstly, if the operator forgets to bring the tools or brings tools that are incompatible with the bolts, the wiring operation will be completely impossible, requiring time to travel back and forth to retrieve the correct tools, greatly reducing work efficiency. Secondly, because the operation relies on tools, sufficient space must be reserved around the connection point for tool operation (such as the rotation radius), which severely restricts its application in space-constrained environments (such as narrow distribution boxes or densely wired areas), significantly limiting its applicable scenarios. Utility Model Content

[0005] The purpose of this invention is to provide a terminal block that allows for quick wiring, thereby solving the problems mentioned in the background section.

[0006] The initial clamping force generated by the elastic sheet of the spring-clamping terminal block is often low and difficult to maintain for a long time. This leads to a potential risk that the wire may be accidentally pulled out of the conductor if it is subjected to an unexpected external force (such as pulling or vibration) after installation, which constitutes a safety hazard that cannot be ignored.

[0007] To address the above problems, the present invention aims to provide a terminal block for quick wiring, comprising a housing, with wiring ports fixedly provided on both sides of the housing. Inside the housing, U-shaped metal pieces are provided at positions corresponding to the two wiring ports, with the openings of the U-shaped metal pieces facing the corresponding wiring ports. One side of each U-shaped metal piece is fixedly connected to the inner wall of the housing via a mounting block. A conductive rod is fixedly connected between the two U-shaped metal pieces. A pressing mechanism is provided on the housing at positions corresponding to the two U-shaped metal pieces, located on the side of the U-shaped metal piece away from the mounting block. When the wire core passes through the wiring port and is inserted into the corresponding U-shaped metal piece, the pressing mechanism is operated to press the U-shaped metal piece towards the mounting block, causing elastic deformation on the side of the U-shaped metal piece away from the mounting block. The deformed U-shaped metal piece clamps and fixes the wire core placed inside.

[0008] As a further improvement to this technical solution, the pressing mechanism includes an assembly cylinder fixedly disposed on the inner wall of the housing. A cylindrical cylinder is coaxially slidably disposed inside the assembly cylinder. A pressing rod is coaxially fixedly connected to one side of the cylindrical cylinder near the U-shaped metal sheet. The other end of the pressing rod slides through the bottom of the assembly cylinder and extends outward.

[0009] As a further improvement to this technical solution, a spring sleeved on the pressing rod is provided between the bottom side of the cylinder and the assembly cylinder, and the spring pushes the cylinder away from the U-shaped metal sheet.

[0010] As a further improvement to this technical solution, two receiving grooves are symmetrically opened on the side of the cylinder away from the pressing rod. One side of the receiving groove is set as a first inclined surface, which extends from the side of the cylinder away from the pressing rod to the inner wall of the cylinder near the pressing rod.

[0011] As a further improvement to this technical solution, two slots are symmetrically formed on the side of the cylinder away from the pressing rod. The depth of the slots is less than the depth of the receiving grooves, and the slots are located between the two receiving grooves. Both sides of the slots are provided with second inclined surfaces, which extend from the side of the cylinder away from the pressing rod to the inner wall of the slots near the pressing rod.

[0012] As a further improvement to this technical solution, the pressing mechanism also includes a rotating column rotatably disposed on the outer side wall of the housing via a positioning ring. One end of the rotating column rotatably passes through the side wall of the housing and is fixedly connected to an insertion rod. Two side plates are centrally symmetrically fixedly connected to the circumferential side wall of the insertion rod.

[0013] As a further improvement to this technical solution, when the end of the insertion rod is inserted into the inside of the cylinder, the two side plates are located inside the two receiving slots respectively, and at this time the end of the pressing rod does not contact the U-shaped metal piece.

[0014] As a further improvement to this technical solution, when the operating rod drives the two side plates to rotate, the two side plates slide along the first inclined surface of the corresponding receiving groove until they contact the end of the cylinder away from the pressing rod. During this sliding process, the side plates push the pressing rod closer to and squeeze the U-shaped metal sheet, so that the U-shaped metal sheet deforms and clamps the wire core.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This quick-connect terminal block, after inserting the wire core into the U-shaped metal plate, drives the connected insertion rod and two side plates fixed on the insertion rod to rotate synchronously by manually rotating the rotating column outside the housing. During the rotation, the two side plates slide along the first inclined surface of the corresponding receiving groove, pushing the cylinder and pressing rod towards the U-shaped metal plate. When the side plate rotates to the point where its end face is in full contact with the end face of the cylinder away from the pressing rod, the end of the pressing rod has fully pressed the end of the U-shaped metal plate away from the mounting base, forcing the U-shaped metal plate to undergo significant elastic deformation. At this time, the two elastic side walls of the U-shaped metal plate tightly clamp the inserted wire core, effectively preventing the wire core from coming out under external force, thereby achieving quick and reliable wire connection.

[0017] 2. This quick-connect terminal block, after the side plate is rotated until its end face is in complete contact with the cylinder inlet end face, can continue to rotate the rotating column, so that the two side plates are respectively rotated into the corresponding slots along the second inclined surface. At this time, the side plate and the slot together form a mechanical locking structure, providing an additional locking point. This design can effectively prevent the rotating column from rotating back unexpectedly and avoid the pressure applied to the U-shaped metal sheet by the pressing mechanism from being released unexpectedly, thereby significantly improving the long-term stability and anti-loosening ability after the wiring is completed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the pressing mechanism of this utility model;

[0021] Figure 4 This is a cross-sectional view of the pressing mechanism of this utility model;

[0022] Figure 5 This is an exploded view of the pressing mechanism of this utility model;

[0023] Figure 6 This is a schematic diagram of the overall device and wire assembly of this utility model;

[0024] Figure 7This is a cross-sectional view of the overall device and wire assembly of this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Housing; 11. Wiring port;

[0027] 2. Mounting block; 21. U-shaped metal sheet; 22. Conductive rod;

[0028] 3. Pressing mechanism; 31. Assembly cylinder; 32. Pressing rod; 33. Rotating column; 34. Positioning ring; 35. Insert rod; 351. Side plate; 36. Cylinder; 361. Receiving groove; 362. Slot; 37. Spring;

[0029] 4. Electrical wires. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide a terminal block that can be quickly wired, including a housing 1 made of insulating plastic. Both sides of the housing 1 are fixedly provided with wiring ports 11. The inner diameter of the wiring ports 11 is larger than the outer diameter of the wires 4 that are compatible with the device. U-shaped metal pieces 21 are provided inside the housing 1 at positions corresponding to the two wiring ports 11. The openings of the U-shaped metal pieces 21 face the corresponding wiring ports 11. One side of the U-shaped metal pieces 21 is fixedly connected to the inner wall of the housing 1 through a mounting block 2. A conductive rod 22 made of conductive metal is fixedly connected between the two U-shaped metal pieces 21.

[0033] Reference Figure 5 and Figure 6 When using this terminal block to connect two wires 4, the operator first strips the insulation from the ends of the two wires 4 to be connected to expose the wire cores. Then, the exposed wire cores of the two wires 4 are inserted into the corresponding U-shaped metal pieces 21 through the terminal block 11, so that the wire cores contact the U-shaped metal pieces 21. At this time, the two wires 4 are electrically connected through the U-shaped metal pieces 21 and the conductive rod 22.

[0034] In order to fix the wire core of the wire 4 inside the corresponding U-shaped metal piece 21, a pressing mechanism 3 is provided on the housing 1 at the position corresponding to the two U-shaped metal pieces 21. The pressing mechanism 3 is located on the side of the U-shaped metal piece 21 away from the mounting block 2. After the wire core of the wire 4 passes through the terminal 11 and is inserted into the corresponding U-shaped metal piece 21, the operator operates the pressing mechanism 3 to press the U-shaped metal piece 21 towards the mounting block 2, so that the side of the U-shaped metal piece 21 away from the mounting block 2 undergoes elastic deformation. The deformed U-shaped metal piece 21 will reduce its internal space, so that the U-shaped metal piece 21 clamps and fixes the wire core of the wire 4 inside, thereby preventing the wire core of the wire 4 from coming out of the U-shaped metal piece 21 under the action of external force, and realizing the effect of connecting the two wires 4 through this terminal.

[0035] The structure of the pressing mechanism 3 is described in detail below, with reference to... Figures 3-5 The pressing mechanism 3 includes an assembly cylinder 31 fixedly mounted on the inner wall of the housing 1. A cylinder 36 is coaxially slidably mounted inside the assembly cylinder 31. A pressing rod 32 is coaxially fixedly connected to the side of the cylinder 36 near the U-shaped metal piece 21. The other end of the pressing rod 32 slides through the bottom of the assembly cylinder 31 and extends outward. A spring 37 is provided between the cylinder 36 and the bottom side inside the assembly cylinder 31 and is sleeved on the pressing rod 32. The spring 37 pushes the cylinder 36 away from the U-shaped metal piece 21. Two receiving grooves 361 are symmetrically opened on the side of the cylinder 36 away from the pressing rod 32. One side of the receiving groove 361 is set as a first inclined surface. The first inclined surface extends from the side of the cylinder 36 away from the pressing rod 32 to the inner wall of the cylinder 36 near the pressing rod 32.

[0036] The pressing mechanism 3 also includes a rotating column 33 that is rotatably mounted on the outer wall of the housing 1 via a positioning ring 34. One end of the rotating column 33 rotatably passes through the side wall of the housing 1 and is fixedly connected to an insertion rod 35. Two side plates 351 are symmetrically fixedly connected to the circumferential side wall of the insertion rod 35.

[0037] When the terminal block is not yet connected to the wire 4, the end of the plug 35 is inserted into the cylinder 36, and the two side plates 351 are located in the corresponding two receiving slots 361. At this time, the spring 37 is in the extended state, pushing the cylinder 36 and the pressing rod 32 away from the U-shaped metal piece 21, ensuring that the end of the pressing rod 32 does not contact the U-shaped metal piece 21. The U-shaped metal piece 21 maintains its original open shape, which facilitates the insertion of the wire core of the wire 4.

[0038] After the operator inserts the wire core of the wire 4 into the U-shaped metal piece 21, the operator manually rotates the rotating column 33 on the outside of the housing 1. The rotating column 33 drives the insertion rod 35 and the two side plates 351 fixed thereon to rotate synchronously. The two side plates 351 slide along the first inclined surface of the corresponding receiving groove 361. Due to the action of the first inclined surface, the side plates 351 will continuously apply a pushing force towards the U-shaped metal piece 21 to the cylinder 36 while rotating. Under the action of the inclined surface pushing force of the side plates 351, the cylinder 36 overcomes the resistance of the spring 37 and begins to slide towards the U-shaped metal piece 21. The cylinder 36 drives the pressing rod 32 fixed to it to move synchronously. At this time, the spring 37 is compressed by the cylinder 36 and the spring 37 stores elastic potential energy.

[0039] The side plate 351 eventually rotates to a position where it is in complete contact with the end face of the cylinder 36 away from the pressing rod 32 (i.e., the inlet end face of the cylinder 36) (i.e., the end of the travel of the receiving groove 361). During this process, the end of the continuously moving pressing rod 32 has fully pressed the end of the U-shaped metal piece 21 away from the mounting block 2, forcing the U-shaped metal piece 21 to undergo significant elastic deformation. At this time, the distance between the two opposite sidewalls of the U-shaped metal piece 21 is reduced to less than the outer diameter of the wire core 4 due to elastic deformation, so that the two elastic sidewalls of the U-shaped metal piece 21 can form a strong clamping force on the wire core 4 inserted therein. In order to further improve the reliability of the connection, refer to Figure 2 Several barbs are closely arranged and fixedly connected on the opposite sidewalls inside the U-shaped metal sheet 21. These barbs are designed to be inclined away from the terminal 11. Therefore, when the sidewall of the U-shaped metal sheet 21 clamps the wire core of the wire 4, these inclined barbs can effectively wedge into the surface of the wire core to form a mechanical interlock, which increases the stability of the wire core fixed inside the U-shaped metal sheet 21.

[0040] It should be emphasized that when the barb squeezes the wire core of wire 4, it can achieve a secure insertion without causing structural damage to the wire core of wire 4, thus achieving reliable clamping and fixing. When the wire core of wire 4 is pulled by external force, it can also effectively prevent it from accidentally coming out of the U-shaped metal piece 21. Thus, by operating the pressing mechanism 3, the two wires 4 have achieved a stable and reliable electrical connection.

[0041] To further improve the stability after wiring, two slots 362 are symmetrically opened on the side of the cylinder 36 away from the pressing rod 32. The depth of the slots 362 is less than the depth of the receiving grooves 361, and the slots 362 are located between the two receiving grooves 361. Both sides of the slots 362 are provided with second inclined surfaces, which extend from the side of the cylinder 36 away from the pressing rod 32 to the inner wall of the slots 362 near the pressing rod 32.

[0042] When the side plate 351 is rotated to a position where it is in full contact with the end face of the cylinder 36 away from the pressing rod 32, the operator can continue to rotate the rotating column 33 so that the two side plates 351 are respectively rotated into the two slots 362 along the second inclined plane. At this time, a slight change will occur: the residual elastic force of the spring 37 will push the cylinder 36 to move a certain distance away from the U-shaped metal piece 21. This distance is equal to the depth of the slot 362. The cylinder 36 drives the pressing rod 32 to retract slightly at the same time, so that the two opposite side walls of the U-shaped metal piece 21 open slightly. However, this slight opening displacement only causes a slight reduction in the clamping force. This reduction is completely within the range of the elastic deformation redundancy of the U-shaped metal piece 21 and the clamping force design redundancy. Therefore, the wire core of the wire 4 is still firmly and reliably clamped.

[0043] The main purpose of setting the slot 362 is to significantly reduce the possibility of accidental rotation of the rotating column 33. Once the side plate 351 is engaged in the slot 362, they form an additional mechanical locking point, which effectively prevents accidental rotation of the rotating column 33 and the accidental release of the pressure applied by the pressing mechanism 3 to the U-shaped metal piece 21. This improves the long-term stability and anti-loosening reliability of the terminal block after wiring is completed.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-connect terminal block, comprising a housing (1), characterized in that: Both sides of the housing (1) are fixedly provided with wiring ports (11). Inside the housing (1), U-shaped metal pieces (21) are provided at positions corresponding to the two wiring ports (11). The openings of the U-shaped metal pieces (21) face the corresponding wiring ports (11). One side of the U-shaped metal pieces (21) is fixedly connected to the inner wall of the housing (1) through a mounting block (2). A conductive rod (22) is fixedly connected between the two U-shaped metal pieces (21). The housing (1) is provided with corresponding... Each position is provided with a pressing mechanism (3). The pressing mechanism (3) is located on the side of the U-shaped metal sheet (21) away from the mounting block (2). When the wire core of the wire (4) passes through the terminal (11) and is inserted into the corresponding U-shaped metal sheet (21), the pressing mechanism (3) is operated to press the U-shaped metal sheet (21) toward the mounting block (2), so that the side of the U-shaped metal sheet (21) away from the mounting block (2) undergoes elastic deformation. The deformed U-shaped metal sheet (21) clamps and fixes the wire core of the wire (4) placed inside.

2. The quick-connect terminal block according to claim 1, characterized in that: The pressing mechanism (3) includes an assembly cylinder (31) fixedly installed on the inner wall of the housing (1). A cylinder (36) is coaxially slidably installed inside the assembly cylinder (31). A pressing rod (32) is coaxially fixedly connected to one side of the cylinder (36) near the U-shaped metal sheet (21). The other end of the pressing rod (32) slides through the bottom of the assembly cylinder (31) and extends outward.

3. The quick-connect terminal block according to claim 2, characterized in that: A spring (37) sleeved on the pressing rod (32) is provided between the bottom side of the cylinder (36) and the assembly cylinder (31), and the spring (37) pushes the cylinder (36) away from the U-shaped metal piece (21).

4. The quick-connect terminal block according to claim 2, characterized in that: The cylinder (36) has two symmetrically arranged receiving grooves (361) on the side away from the pressing rod (32). One side of the receiving groove (361) is set as a first inclined surface, which extends from the side of the cylinder (36) away from the pressing rod (32) to the inner wall of the cylinder (36) near the pressing rod (32).

5. The quick-connect terminal block according to claim 4, characterized in that: Two slots (362) are symmetrically provided on the side of the cylinder (36) away from the pressing rod (32). The depth of the slots (362) is less than the depth of the receiving groove (361), and the slots (362) are located between the two receiving grooves (361). Both sides of the slots (362) are provided with second inclined surfaces, which extend from the side of the cylinder (36) away from the pressing rod (32) to the inner wall of the slots (362) near the pressing rod (32).

6. The quick-connect terminal block according to claim 2, characterized in that: The pressing mechanism (3) also includes a rotating column (33) that is rotatably disposed on the outer side wall of the housing (1) via a positioning ring (34). One end of the rotating column (33) rotatably passes through the side wall of the housing (1) and is fixedly connected to a plug rod (35). Two side plates (351) are centrally symmetrically fixedly connected to the circumferential side wall of the plug rod (35).

7. The quick-connect terminal block according to claim 6, characterized in that: When the end of the insert rod (35) is inserted into the inside of the cylinder (36), the two side plates (351) are located inside the two receiving slots (361) respectively, and at this time the end of the pressing rod (32) does not contact the U-shaped metal piece (21).

8. The quick-connect terminal block according to claim 6, characterized in that: When the operating rod (35) drives the two side plates (351) to rotate, the two side plates (351) slide along the first inclined surface of the corresponding receiving groove (361) until they contact the end of the cylinder (36) away from the pressing rod (32). During this sliding process, the side plates (351) push the pressing rod (32) to approach and squeeze the U-shaped metal sheet (21), so that the U-shaped metal sheet (21) deforms and clamps the wire core (4).

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