Incoming line locking structure for air switch

Abstract

The utility model discloses an air switch goes in the locking structure of wire, including air switch body, the upper surface fixed mounting of air switch body has two side plates, rotatory installation has the slide bar between two side plates, the surface of slide bar is slidably installed with a plurality of limit block, the surface fixed mounting of slide bar has the protruding piece of through limit block, the side of limit block is equipped with the arc slot, and the both sides of arc slot are equipped with the through groove, and the inside slip installation of through groove has the slide plate, and the fixed mounting of rubber ring has between two slide plates, the inside slip installation of arc slot has a plurality of support rod, and the top fixed mounting of support rod has the top piece of arc shape. Through slide bar, limit block, insert block, top piece, slide plate and rubber ring etc. setting, can to the stable clamping of electric wire, and can adjust the angle and distance between electric wire and wire hole, can also buffer to the electric wire angle adjustment simultaneously, prevent the folding caused by the adjustment angle, reduce the risk of electric wire fatigue fracture.

Description

Technical Field

[0001] This utility model belongs to the field of air switch technology, and in particular relates to an incoming line locking structure for an air switch. Background Technology

[0002] An air switch, also known as an air circuit breaker, is a type of circuit breaker. It is a switch that automatically disconnects when the current in the circuit exceeds the rated current. Air switches are a very important electrical appliance in low-voltage power distribution networks and electric drive systems. They integrate control and multiple protection functions. In addition to contacting and disconnecting circuits, they can also protect against short circuits, severe overloads, and undervoltages in circuits or electrical equipment. They can also be used for infrequent starting of motors.

[0003] In the prior art, Chinese utility model patent CN218447762U discloses an inlet locking structure for an air switch, including an air switch body, a locking structure, and a wire harness structure. The bottom of the air switch body has three outgoing wires, and the top center of the air switch body has three incoming wires. Mounting grooves are installed on both sides of the top of the air switch body. The bottom of each mounting groove is connected to a one-way threaded rod via a rotating shaft, and the top of each one-way threaded rod has a first knob. The outer wall of each one-way threaded rod is threaded with a first threaded block. This utility model adjusts the rotation direction of the second knob, causing the second threaded blocks to move closer together on the outer wall of the two-way threaded rod. The second threaded blocks drive the locking plates, causing the locking plates to move closer together, thus locking the incoming wires. This structure achieves locking of the incoming wires, preventing them from falling off during use.

[0004] In existing technology, the feed line can be locked in place by using a second knob, a two-way threaded rod, and a locking plate to prevent it from coming loose during use. However, there are still some shortcomings in its overall use.

[0005] Firstly, in the traditional case, each incoming line is installed inside the wall at a different angle to the circuit breaker, and finally, they all need to be installed vertically at the circuit breaker's wiring port. When connecting the incoming lines, the staff needs to adjust the angle of each connection point before connecting them, which is time-consuming, labor-intensive, and reduces work efficiency.

[0006] Secondly, if the wiring is perpendicular to the connection port after the angle is adjusted, it will cause a deviation from the reserved wiring direction and result in bending. If no buffer mechanism is set at the bend, the wire will generate mechanical stress when it expands and contracts with heat, causing the conductor to break or the joint to loosen. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this utility model provides an incoming line locking structure for air switches. This utility model solves the problem that the incoming line cannot be pre-fixed for angle adjustment during connection, leading to difficult installation and reduced installation speed. Furthermore, it addresses the technical problem that the lack of a buffer mechanism after angle adjustment during connection can cause wire breakage or loosening of joints due to thermal expansion and contraction.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an inlet locking structure for an air switch, comprising an air switch body, two side plates fixedly mounted on the upper surface of the air switch body, a slide rod rotatably mounted between the two side plates, multiple limiting blocks slidably mounted on the surface of the slide rod, a protrusion penetrating the limiting block fixedly mounted on the surface of the slide rod, an arc-shaped groove formed on the side of the limiting block, through grooves formed on both sides of the arc-shaped groove, a sliding plate slidably mounted inside the through groove, a rubber ring fixedly mounted between two sliding plates, multiple support rods slidably mounted inside the arc-shaped groove, and an arc-shaped top block fixedly mounted at the top of each support rod.

[0009] Optionally, a second spring sleeved on the outside of the support rod is fixedly installed between the top block and the arc-shaped groove.

[0010] Optionally, one end of the slide rod passes through the side plate, and a knob is fixedly installed at the end. The knob is threaded with a limiting screw to limit its movement at the eccentric part.

[0011] Optionally, the slide bar has multiple limiting grooves on its surface, and a plug is slidably installed on one side of the limiting block, which is inserted into the limiting groove.

[0012] Optionally, an installation box is fixedly installed on one side of the limiting block, and the insert block is slidably installed at the bottom of the installation box.

[0013] Optionally, the surface of the mounting box is provided with a sliding groove, and a button is slidably installed inside the sliding groove and fixed to the insert block.

[0014] Optionally, the upper surface of the air switch body is provided with multiple wire inlet holes, and a locking mechanism is provided on both sides of the wire inlet holes.

[0015] Optionally, the locking mechanism includes movable grooves on both sides of the inlet hole, a semi-circular clamping block is slidably installed inside the movable groove, a semi-circular threaded sleeve is fixedly installed on the top of the clamping block, and nuts are threadedly engaged on the surfaces of the two threaded sleeves.

[0016] In summary, compared with the prior art, the incoming line interlocking structure for an air switch provided by this utility model has the following beneficial effects:

[0017] 1. This utility model, through the setting of sliding rod, limiting block, insertion block, top block, sliding plate and rubber ring, can stably clamp different types of wires, and can adjust the angle and distance between the wire and the inlet hole, which speeds up the connection speed of the wire, thereby increasing work efficiency. At the same time, it can buffer the wire while adjusting the angle to prevent bending caused by the adjustment angle, reduce the risk of wire fatigue breakage, and greatly improve the use effect.

[0018] 2. This utility model, through the setting of movable groove, clamping block, threaded sleeve and nut, can lock the connected wires a second time, to prevent the connected wires from falling off after long-term use, improve the stability of the connection and avoid related electrical safety accidents. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 3 This is a top view of the structure of this utility model;

[0022] Figure 4 for Figure 1 Enlarged structural diagram at point A in the diagram;

[0023] Figure 5 for Figure 2 Enlarged structural diagram at point B in the diagram;

[0024] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure at point CC;

[0025] Figure 7 for Figure 6 Enlarged structural diagram at point D in the diagram;

[0026] Figure 8 for Figure 3 Enlarged structural diagram at point E in the diagram;

[0027] Figure 9 This is a schematic diagram of the clamping block structure of this utility model.

[0028] In the diagram: air switch body 10; inlet hole 11; side plate 12; slide rod 13; limit block 14; limit groove 15; mounting box 16; slide groove 17; button 18; plug block 19; first spring 20; protrusion 21; knob 22; limit screw 23; support rod 24; top block 25; second spring 26; through groove 27; sliding plate 28; rubber ring 29; moving groove 30; clamping block 31; threaded sleeve 32; nut 33. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] refer to Figure 1 and Figure 8 An inlet locking structure for an air switch includes an air switch body 10, with a plurality of inlet holes 11 on the top of the air switch body 10 for connecting wires into the air switch body 10.

[0031] Further reference Figure 1 , Figure 4 and Figure 5 Two side plates 12 are fixedly installed on the upper surface of the air switch body 10. A slide rod 13 is rotatably installed between the two side plates 12. A protrusion 21 is fixedly installed on the side of the slide rod 13, and multiple limit blocks 14 slide through the slide rod 13 for pre-fixing the wire. Since the protrusion 21 also passes through the limit block 14, the limit block 14 can slide on the surface of the slide rod 13 without rotating. An arc-shaped groove is opened on the side of the limit block 14, and through grooves 27 are opened on both sides of the arc-shaped groove. A sliding plate 28 is slidably installed inside the through groove 27. An arc-shaped rubber ring 29 is fixedly installed between the two sliding plates 28. When connecting the wire, the wire connector is inserted between the rubber ring 29 and the arc-shaped groove of the limit block 14. As the wire is inserted, pull it downwards, causing the rubber ring 29 to expand outwards automatically. Simultaneously, the sliding plate 28 is pulled out of the through groove 27. Because the rubber ring 29 is flexible, it adheres to the surface of the wire, achieving rapid pre-fixation. This prevents wire fraying during connection and facilitates subsequent wiring. It should be noted that the rubber ring 29 is installed between two sliding plates 28, which slide inside the through groove 27. This allows the rubber ring 29 to fix wires of different thicknesses while ensuring its fixing effect. It also prevents the rubber ring 29 from stretching to its maximum limit when fixing thicker wires, thus avoiding tensile fatigue and ensuring the fixing effect of thinner wires.

[0032] Further reference Figure 1 , Figure 4 , Figure 6 and Figure 7The upper surface of the slide rod 13 is provided with multiple limiting grooves 15. An installation box 16 is fixedly installed on one side of the limiting block 14. A sliding groove 17 is provided on the surface of the installation box 16. A button 18 is slidably installed inside the sliding groove 17. An insert 19 that cooperates with the limiting groove 15 is slidably installed on the top of the installation box 16. The insert 19 and the button 18 are fixed to each other. A first spring 20 is fixedly installed between the upper surface of the insert 19 and the lower surface of the inner cavity of the installation box 16. After the wire is pre-fixed, the button 18 is pushed upward. The button 18 drives the insert 19 to move upward, so that the insert 19 disengages from the limiting groove 15 and squeezes the first spring 20, so that the first spring 20 undergoes elastic deformation. This allows the limiting block 14 to slide on the surface of the slide rod 13 to adjust the position of the wire pre-entry hole 11, which facilitates the subsequent electrofusion connection work. After the distance adjustment is completed, the button 18 is released, so that the deformed first spring 20 is reset. The insert 19 is pushed downward and inserted into the limiting groove 15 to complete the limiting.

[0033] Further reference Figure 2 One end of the slide bar 13 passes through the side plate 12, and a knob 22 is fixedly connected to the end. A limit screw 23 is threadedly installed at the eccentric part of the knob 22. When the wire is connected to the air switch body 10, it needs to be installed vertically at the wire inlet hole 11 to facilitate installation. Therefore, the angle of the pre-fixed wire needs to be adjusted. At this time, the knob 22 can be rotated to drive the slide bar 13 connected to it to rotate, thereby driving the limit block 14 to rotate and adjust the angle of the wire for easy connection. After the angle is adjusted, the limit screw 23 can be rotated so that the limit screw 23 is screwed into the inside of the knob 22 and can abut against the side plate 12 to limit and ensure the electrofusion connection is carried out.

[0034] Further reference Figure 3 , Figure 5 and Figure 8 Multiple support rods 24 are slidably installed inside the arc-shaped groove of the limiting block 14. An arc-shaped second spring 26 is fixedly installed at the outer end of the support rod 24. A second spring 26 sleeved on the outside of the support rod 24 is fixedly installed between the second spring 26 and the limiting block 14. When the wire passes through the inside of the rubber ring 29, the surface away from the rubber ring 29 is in contact with the surface of the top block 25. As the support rod 24 drives the top block 25 to slide inside the limiting block 14, and under the elastic support of the second spring 26, the wire bends when the angle is adjusted during connection, which can play a buffering role and reduce the risk of wire fatigue breakage.

[0035] Further reference Figure 1 and Figure 8 and Figure 9Movable grooves 30 are provided on both sides of the inlet hole 11. A semi-circular clamping block 31 is slidably installed inside the movable groove 30. A semi-circular threaded sleeve 32 is fixedly installed on the top of the clamping block 31. The two clamping blocks 31 and the threaded sleeve 32 can form a complete circle. A nut 33 is threaded on the surface of the threaded sleeve 32. The clamping block 31 and the threaded sleeve 32 can be disassembled from the movable groove 30. Before the wire is connected, the clamping block 31 and the threaded sleeve 32 can be replaced with those that are compatible with the wire to ensure the tightness of the wire ear loop. Before the wire is connected to the inlet hole 11, it needs to pass through the nut 33 and then the wiring work is carried out. After the wire is connected, the clamping block 31 and the threaded sleeve 32 are centered and slid to form a cylinder. Finally, the nut 33 is screwed into the threaded sleeve 32, so that the threaded sleeve 32 drives the clamping block 31 to clamp the wire and lock it to prevent the wire from falling off during use and improve the use effect.

[0036] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0037] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0038] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. An incoming line interlocking structure for an air switch, comprising an air switch body (10), characterized in that, Two side plates (12) are fixedly installed on the upper surface of the air switch body (10). A slide rod (13) is rotatably installed between the two side plates (12). Multiple limit blocks (14) are slidably installed on the surface of the slide rod (13). A protrusion (21) penetrating the limit block (14) is fixedly installed on the surface of the slide rod (13). An arc-shaped groove is opened on the side of the limit block (14). Through grooves (27) are opened on both sides of the arc-shaped groove. A sliding plate (28) is slidably installed inside the through groove (27). A rubber ring (29) is fixedly installed between the two sliding plates (28). Multiple support rods (24) are slidably installed inside the arc-shaped groove. An arc-shaped top block (25) is fixedly installed at the top of the support rod (24).

2. The incoming line interlocking structure for an air switch according to claim 1, characterized in that, A second spring (26) sleeved on the outside of the support rod (24) is fixedly installed between the top block (25) and the arc groove.

3. The incoming line interlocking structure for an air switch according to claim 1, characterized in that, One end of the slide bar (13) passes through the side plate (12), and a knob (22) is fixedly installed at the end. The knob (22) is threaded with a limiting screw (23) to limit its position.

4. The incoming line interlocking structure for an air switch according to claim 1, characterized in that, The slide bar (13) has multiple limiting grooves (15) on its surface, and the limiting block (14) has a plug (19) that is slidably installed on one side of the limiting block (14) and inserted into the limiting groove (15).

5. The incoming line interlocking structure for an air switch according to claim 4, characterized in that, An installation box (16) is fixedly installed on one side of the limiting block (14), and the insert (19) is slidably installed on the bottom of the installation box (16).

6. The incoming line interlocking structure for an air switch according to claim 5, characterized in that, The surface of the mounting box (16) is provided with a groove (17), and a button (18) is slidably installed inside the groove (17) and fixed to the insert (19).

7. The incoming line interlocking structure for an air switch according to claim 1, characterized in that, The upper surface of the air switch body (10) is provided with multiple inlet holes (11), and locking mechanisms are provided on both sides of the inlet holes (11).

8. The incoming line interlocking structure for an air switch according to claim 7, characterized in that, The locking mechanism includes movable grooves (30) on both sides of the inlet hole (11). A semi-circular clamping block (31) is slidably installed inside the movable groove (30). A semi-circular threaded sleeve (32) is fixedly installed on the top of the clamping block (31). Nuts (33) are threadedly fitted on the surfaces of the two threaded sleeves (32).

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