Anti-loosening fastening switch terminal

Abstract

The utility model belongs to the technical field of electric power equipment, in particular to an anti-loosening fastening switch terminal, which comprises a metal plate, an extrusion plate and a fastening plate, the metal plate is bent to define a wire accommodating cavity, a fastening anti-loosening mechanism is arranged between the metal plate and the extrusion plate, and two ends of the metal plate are overlapped. According to the utility model, the structure design is reasonable, assembly and disassembly are facilitated, the extrusion plate can be rotatably connected to the fastening screw rod, and the extrusion plate is guided and limited, so that the extrusion plate cannot rotate along with the rotation of the fastening screw rod, the arc-shaped groove of the fastening plate always corresponds to a lead, the stability of fastening the lead is improved, and the service life of the lead is prolonged. And meanwhile, the limiting of the guide plate and the guide rail is used for replacing the limiting of a fastening screw rod, so that the looseness of the fastening screw rod caused by the influence of external factors is reduced, the fastening plates of different arc-shaped grooves can be conveniently disassembled, assembled and replaced, the arc-shaped grooves can be just attached to the outer sides of the wires with different thicknesses, and the clamping and fastening effects are better.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to an anti-loosening fastening switch terminal. Background Art

[0002] Terminal blocks are essential components for switches, contactors, and other devices, and are widely used in the power industry to connect wires to electrical equipment. Traditional terminal blocks rely on the mechanical force generated by tightening bolts to hold the wires in place. During operation, vibration and thermal expansion and contraction can cause wire connection points to loosen, resulting in poor contact. This poor contact increases contact resistance and temperatures, potentially damaging electrical equipment and even causing fires.

[0003] After searching: China's patent number CN214099932U is a kind of anti-loosening terminal with temperature compensation function, including a wire accommodating bin for accommodating wires and a fastener for pressing the wires, the fastener is threadedly connected to the wire accommodating bin, and the wire accommodating bin includes two layers of metal plates with different expansion coefficients.

[0004] However, the above-mentioned anti-loosening terminal still has some shortcomings. The anti-loosening terminal is not convenient for convenient and efficient assembly and disassembly, which makes it inconvenient to manufacture the anti-loosening terminal efficiently, reducing production efficiency. It is also inconvenient to replace the fastening plates with different arc surfaces according to the thickness of the wire, which reduces the stability of the fixed wire. Therefore, we propose an anti-loosening fastening switch terminal to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings and to propose an anti-loosening fastening switch terminal.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A switch terminal for preventing loosening and fastening includes a metal plate, an extrusion plate and a fastening plate. The metal plate is bent and enclosed to form a wire-containing cavity. A fastening and anti-loosening mechanism is provided between the metal plate and the extrusion plate. The two ends of the metal plate overlap. A disassembly and replacement mechanism is provided between the extrusion plate and the fastening plate. A guide and limiting mechanism is provided between the metal plate and the extrusion plate. An arc-shaped groove is provided on the top of the fastening plate.

[0008] As a preferred embodiment of the present invention, the fastening and anti-loosening mechanism includes a fastening screw and a threaded groove opened at the bottom of the metal plate. The fastening screw is threadedly sleeved in the threaded groove. The top end of the fastening screw is rotatably connected to a connecting plate, and the connecting plate is detachably fixed to the bottom of the extrusion plate.

[0009] As a preferred embodiment of the present invention, the bottom of the connecting plate is threadedly connected with two screws, and the connecting plate is fixedly connected to the bottom of the extrusion plate by the two screws.

[0010] As a preferred embodiment of the present invention, the bottom of the connecting plate is fixedly connected to a bearing, and the fastening screw is fixedly sleeved in the inner ring of the bearing.

[0011] As a preferred embodiment of the present invention, a nut is fixedly connected to the lower end of the fastening screw, and a cross slot is provided at the bottom of the nut.

[0012] As a preferred embodiment of the present invention, the guide and limiting mechanism includes a guide plate fixedly connected to the front side of the extrusion plate, and two guide rails fixedly connected to the front side of the metal plate, and the guide plate is slidably sleeved on the outer sides of the two guide rails.

[0013] As a preferred embodiment of the present invention, two sliding grooves are provided on the rear side of the guide plate, and the two guide rails are slidably sleeved in the corresponding sliding grooves respectively.

[0014] As a preferred embodiment of the present invention, the disassembly and replacement mechanism includes four screws 2, four threaded holes are provided at the bottom of the fastening plate, four receiving grooves are provided at the bottom of the extrusion plate, and a through groove is provided on the top inner wall of the receiving groove. The screws 2 are movably inserted in the through grooves, the screws 2 are threadedly connected in the corresponding threaded holes, and the nuts of the screws 2 are movably placed in the receiving grooves.

[0015] In the utility model, the anti-loosening fastening switch terminal is buckled on the guide plate on the two guide rails, and the guide rails are located in the slide groove. At the same time, the extrusion plate and the fastening plate are sleeved in the wire accommodating cavity after the metal plate is bent. Then, the fastening screw is rotatably connected with the connecting plate through the bearing. Then, the connecting plate is fixed to the bottom of the extrusion plate through the screw 1, so that the fastening screw and the extrusion plate are rotatably connected. When the fastening screw is rotated by the nut, due to the setting of the thread groove, the fastening screw is rotated upward and is locked in the guide limit mechanism. Under the guide limit of the guide plate and the guide rail, the extrusion plate cannot rotate, so that the arc groove of the fastening plate always corresponds to the wire. The fastening screw drives the connection plate, the extrusion plate and the fastening plate to move upward. Under the action of the arc groove of the fastening plate and the wire accommodating cavity, the wire can be effectively clamped and fixed. The guide limit of the guide plate and the guide rail replaces the fastening screw for limiting, which reduces the loosening of the fastening screw due to external factors, thereby avoiding the problem of loosening and falling apart of the entire terminal assembly, making the anti-loosening fastening better;

[0016] In the utility model, the anti-loosening fastening switch terminal is convenient for disassembling and installing fastening plates with different arc-shaped grooves according to the thickness of the wire by setting the second screw and the threaded hole, so that the arc-shaped groove can fit exactly on the outside of the wires of different thicknesses, thereby achieving a better clamping and fastening effect;

[0017] The utility model has a reasonable structural design and is convenient for assembly and disassembly. At the same time, the extrusion plate can be rotatably connected to the fastening screw, and the extrusion plate is guided and limited, so that the extrusion plate cannot rotate with the rotation of the fastening screw, so that the arc groove of the fastening plate always corresponds to the wire, thereby improving the stability of the fastened wire. At the same time, the fastening screw is limited by the limitation of the guide plate and the guide rail instead of the fastening screw, which reduces the loosening of the fastening screw due to external factors, and is convenient for disassembly and replacement of fastening plates with different arc grooves, so that the arc groove can just fit the outside of wires of different thicknesses, so that the clamping and fastening effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a switch terminal that is tightened to prevent loosening proposed by the utility model;

[0019] Figure 2 This is a cross-sectional view of a switch terminal for preventing loosening and fastening proposed by the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of part A;

[0021] Figure 4 This is an exploded view of a guide and limiting mechanism for preventing loosening and fastening switch terminals proposed by the utility model.

[0022] In the figure: 1. Metal plate; 2. Wire-containing cavity; 3. Fastening and anti-loosening mechanism; 4. Extrusion plate; 5. Guide plate; 51. Slide groove; 6. Guide rail; 7. Disassembly and replacement mechanism; 8. Fastening plate; 9. Arc groove; 31. Connecting plate; 32. Bearing; 33. Screw 1; 34. Fastening screw; 35. Threaded groove; 36. Nut; 37. Cross groove; 71. Screw 2; 72. Storage groove; 73. Through groove; 74. Threaded hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 4A loose-proof and fastening switch terminal includes a metal plate 1, an extrusion plate 4 and a fastening plate 8. The metal plate 1 is bent and enclosed to form a wire-containing cavity 2. A fastening and anti-loosening mechanism 3 is provided between the metal plate 1 and the extrusion plate 4. The two ends of the metal plate 1 overlap. A disassembly and replacement mechanism 7 is provided between the extrusion plate 4 and the fastening plate 8. A guide and limiting mechanism is provided between the metal plate 1 and the extrusion plate 4. An arc groove 9 is provided on the top of the fastening plate 8.

[0025] Further, refer to Figure 1 、 Figure 2 and Figure 4 The fastening and anti-loosening mechanism 3 includes a fastening screw 34 and a threaded groove 35 opened at the bottom of the metal plate 1. The fastening screw 34 is threadedly sleeved in the threaded groove 35. The top end of the fastening screw 34 is rotatably connected to the connecting plate 31, and the connecting plate 31 is detachably fixed to the bottom of the extrusion plate 4.

[0026] The above scheme is adopted: the guide plate 5 is buckled on the two guide rails 6, and the guide rails 6 are located in the slide groove 51. At the same time, the extrusion plate 4 and the fastening plate 8 are sleeved in the wire accommodating cavity 2 after the metal plate 1 is bent, and then the fastening screw 34 is rotatably connected to the connecting plate 31 through the bearing 32. Then, the connecting plate 31 is fixed to the bottom of the extrusion plate 4 through the screw 1 33, so that the fastening screw 34 is rotatably connected to the extrusion plate 4. When the fastening screw 34 is rotated by the nut 36, due to the setting of the thread groove 35, the fastening screw 34 is rotationally moved upward, and the fastening screw 34 drives the connecting plate 31, the extrusion plate 4 and the fastening plate 8 to move upward. Under the action of the arc groove 9 of the fastening plate 8 and the wire accommodating cavity 2, the wire can be effectively clamped and fixed.

[0027] Furthermore, the bottom of the connecting plate 31 is threadedly connected to two screws 33, and the connecting plate 31 is fixedly connected to the bottom of the extrusion plate 4 by the two screws 33, which facilitates the connection and fixation of the connecting plate 31 and the extrusion plate 4.

[0028] Furthermore, a bearing 32 is fixedly connected to the bottom of the connecting plate 31 , and a fastening screw 34 is fixedly sleeved in the inner ring of the bearing 32 , so that the fastening screw 34 can be rotatably connected to the bottom of the connecting plate 31 .

[0029] Furthermore, a nut 36 is fixedly connected to the lower end of the fastening screw 34 , and a cross slot 37 is provided at the bottom of the nut 36 to facilitate the rotation of the fastening screw 34 by a screwdriver.

[0030] Further, refer to Figure 1 and Figure 4The guide and limiting mechanism includes a guide plate 5 fixedly connected to the front side of the extrusion plate 4, and two guide rails 6 fixedly connected to the front side of the metal plate 1. The guide plate 5 is slidably mounted on the outside of the two guide rails 6. Two sliding grooves 51 are provided on the rear side of the guide plate 5, and the two guide rails 6 are slidably mounted in the corresponding sliding grooves 51 respectively.

[0031] The above scheme is adopted: under the guide limit of the guide plate 5 and the guide rail 6 in the guide limit mechanism, the extrusion plate 4 cannot rotate, so that the arc groove 9 of the fastening plate 8 always corresponds to the wire, and the fastening screw 34 drives the connecting plate 31, the extrusion plate 4 and the fastening plate 8 to move upward. Under the action of the arc groove 9 of the fastening plate 8 and the wire accommodating cavity 2, the wire can be effectively clamped and fixed, and the guide limit of the guide plate 5 and the guide rail 6 replaces the fastening screw 34 for limiting, reducing the loosening of the fastening screw 34 due to external factors, thereby avoiding the problem of loosening and falling apart of the entire terminal assembly, and making the anti-loosening fastening better.

[0032] Further, refer to Figure 1-Figure 3 The disassembly and replacement mechanism 7 includes four screws 71, four threaded holes 74 are provided at the bottom of the fastening plate 8, four receiving grooves 72 are provided at the bottom of the extrusion plate 4, and a through groove 73 is provided on the top inner wall of the receiving groove 72. The screws 71 are movably inserted into the through groove 73, and the screws 71 are threadedly connected to the corresponding threaded holes 74. The nuts of the screws 71 are movably placed in the receiving groove 72.

[0033] The above solution is adopted: according to the thickness of the wire, the setting of the second screw 71 and the threaded hole 74 is used to facilitate the disassembly and installation of the fastening plate 8 with different arc grooves 9, so that the arc groove 9 can fit exactly on the outside of wires of different thicknesses, so that the clamping and fastening effect is better.

[0034] In the present invention, when in use, the guide plate 5 is buckled on the two guide rails 6, and the guide rails 6 are located in the slide groove 51, and the extrusion plate 4 and the fastening plate 8 are sleeved in the wire-containing cavity 2 after the metal plate 1 is bent, and then the fastening screw 34 is rotatably connected to the connecting plate 31 through the bearing 32, and then the connecting plate 31 is fixed to the bottom of the extrusion plate 4 through the screw 33, so that the fastening screw 34 is rotatably connected to the extrusion plate 4. When the fastening screw 34 is rotated by the nut 36, the fastening screw 34 is threadedly sleeved in the thread groove 35, which not only fixes the two metal plates 1, but also makes the metal plate 1 opened and the fastening screw 34 is tightened. The rod 34 can be rotatably moved upward. Under the guide limit of the guide plate 5 and the guide rail 6 in the guide limit mechanism, the extrusion plate 4 cannot rotate, so that the arc groove 9 of the fastening plate 8 always corresponds to the wire. The fastening screw 34 drives the connecting plate 31, the extrusion plate 4 and the fastening plate 8 to move upward. Under the action of the arc groove 9 of the fastening plate 8 and the wire accommodating cavity 2, the wire can be effectively clamped and fixed, and the guide limit of the guide plate 5 and the guide rail 6 replaces the fastening screw 34 for limiting, reducing the loosening of the fastening screw 34 due to external factors, thereby avoiding the problem of loosening and falling apart of the entire terminal assembly, and making the anti-loosening fastening better.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A switch terminal for preventing loosening and fastening, characterized in that: The invention comprises a metal plate (1), an extrusion plate (4) and a fastening plate (8), wherein the metal plate (1) is bent and enclosed to form a line-containing cavity (2), a fastening and anti-loosening mechanism (3) is provided between the metal plate (1) and the extrusion plate (4), the two ends of the metal plate (1) overlap, a disassembly and replacement mechanism (7) is provided between the extrusion plate (4) and the fastening plate (8), a guide and limiting mechanism is provided between the metal plate (1) and the extrusion plate (4), and an arc groove (9) is provided on the top of the fastening plate (8).

2. The anti-loosening fastening switch terminal according to claim 1, characterized in that: The fastening and anti-loosening mechanism (3) comprises a fastening screw (34) and a threaded groove (35) provided at the bottom of the metal plate (1); the fastening screw (34) is threadedly sleeved in the threaded groove (35); the top end of the fastening screw (34) is rotatably connected to a connecting plate (31); and the connecting plate (31) is detachably fixedly connected to the bottom of the extrusion plate (4).

3. The anti-loosening fastening switch terminal according to claim 2, characterized in that: The bottom of the connecting plate (31) is threadedly connected to two screws (33), and the connecting plate (31) is fixedly connected to the bottom of the extrusion plate (4) by the two screws (33).

4. The anti-loosening fastening switch terminal according to claim 2, characterized in that: The bottom of the connecting plate (31) is fixedly connected to a bearing (32), and the fastening screw (34) is fixedly sleeved in the inner ring of the bearing (32).

5. The anti-loosening fastening switch terminal according to claim 2, characterized in that: The lower end of the fastening screw (34) is fixedly connected to a nut (36), and a cross slot (37) is provided at the bottom of the nut (36).

6. The anti-loosening fastening switch terminal according to claim 1, characterized in that: The guide and limiting mechanism comprises a guide plate (5) fixedly connected to the front side of the extrusion plate (4) and two guide rails (6) fixedly connected to the front side of the metal plate (1), wherein the guide plate (5) is slidably sleeved on the outside of the two guide rails (6).

7. The anti-loosening fastening switch terminal according to claim 6, characterized in that: Two sliding grooves (51) are provided on the rear side of the guide plate (5), and the two guide rails (6) are respectively slidably sleeved in the corresponding sliding grooves (51).

8. The anti-loosening fastening switch terminal according to claim 1, characterized in that: The disassembly and replacement mechanism (7) includes four screws (71), four threaded holes (74) are provided at the bottom of the fastening plate (8), four receiving grooves (72) are provided at the bottom of the extrusion plate (4), and a through groove (73) is provided on the top inner wall of the receiving groove (72). The screws (71) are movably inserted into the through groove (73), the screws (71) are threadedly connected to the corresponding threaded holes (74), and the nuts of the screws (71) are movably placed in the receiving groove (72).

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