Wiring terminal capable of being mounted and dismounted repeatedly

Abstract

The utility model relates to the technical field of wiring terminals, in particular to a wiring terminal capable of being mounted and dismounted repeatedly, which comprises a terminal, a rotating ring and the like. And the terminal is rotationally connected with a rotating ring. As the clamping piece is corrugated, the concave-convex curved surface of the corrugated clamping piece forms a continuous wave-shaped contact zone, and compared with plane hard contact of a common clamping piece, clamping force can be dispersed to contact points of a plurality of wave crests and wave troughs; the multi-point flexible support avoids the problems of insulating layer fracturing and wire deformation caused by overlarge local pressure of a common clamping piece, is particularly suitable for thin-wall wires (such as silica gel insulated wires) or multi-strand stranded wires (preventing single-strand wires from being broken by pressing), and when the wires are stressed and shaken, tiny bending of wave crests and wave troughs can be converted into elastic potential energy, so that the elastic potential energy can be converted into elastic potential energy, and the elastic potential energy can be converted into elastic potential energy. And rigid impact force is not directly transmitted, so that fretting wear and instant looseness of a contact interface between the lead and the clamping piece are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of terminal blocks, and in particular to a terminal block that can be repeatedly installed and disassembled. Background Technology

[0002] Terminal blocks are accessories used to achieve electrical connections, and are classified as connectors in industry. With increasing industrial automation and more stringent and precise industrial control requirements, the use of terminal blocks is gradually rising.

[0003] In existing technologies, after the wire is inserted into the terminal, it is usually fixed in the following ways: First, when the wire is inserted into the terminal, hydraulic pliers are used to flatten the terminal, so that the wire is fixed inside the terminal, thereby fixing the wire and the terminal. However, this method is not convenient for disassembling the wire, and the terminal will affect its subsequent use after being squeezed and deformed. Second, existing methods also use bolts to fix the wire and the terminal. However, this method requires the use of auxiliary tools when the operator disassembles and installs the wire, which is not convenient. At the same time, after the screw is turned many times, the screw may strip, which will affect the installation and disassembly of the terminal and the wire.

[0004] Meanwhile, after the existing wires are inserted into the terminals, in order to prevent dust and moisture from entering the terminals, a sealing ring is usually used to seal the gap between the wires and the terminal opening. Although the sealing ring can play a sealing role, the wires will cause serious wear to the sealing ring during the repeated insertion and removal of the wires, thus causing the sealing effect of the sealing ring to fail. Utility Model Content

[0005] To overcome the shortcomings of existing methods that still use bolts to fix the wires and terminals, which require auxiliary tools for workers to disassemble and install the wires, resulting in inconvenience, this utility model provides a terminal block that can be repeatedly installed and disassembled.

[0006] The technical implementation scheme of this utility model is as follows: a terminal block that can be repeatedly installed and disassembled, including a terminal block; it also includes a rotating ring, ropes, clips and spring posts; the rotating ring is rotatably connected to the terminal block; several ropes are fixedly connected to the rotating ring, and one end of the rope passes through the terminal block; a clip is fixedly connected to each terminal block; several spring posts are fixedly connected to each clip, and one end of the spring posts is fixedly connected to the terminal block.

[0007] Furthermore, the clips are designed to be corrugated.

[0008] Furthermore, the troughs on the clips are designed as curved surfaces.

[0009] Furthermore, it also includes a guide ring, a sealing ring, a connecting tube, a connecting rope, a piston rod, and an elastic element; several guide rings are fixedly connected to the terminal; a sealing ring is fixedly connected to the inside of the terminal, and the sealing ring has a liquid storage channel inside; an air bladder is provided on the sealing ring; the liquid storage channel on the sealing ring is connected to several connecting tubes; several connecting ropes are fixedly connected to the rotating ring, and the connecting ropes pass through the guide rings; a piston rod is slidably connected inside each connecting tube, and the piston rod is fixedly connected to one end of the connecting rope; an elastic element is fixedly connected to each piston rod, and one end of the elastic element is fixedly connected to the connecting tube.

[0010] Beneficial effects: Because the clips are corrugated, the concave and convex surfaces of the corrugated clips form a continuous wave-shaped contact band. Compared with the planar hard contact of ordinary clips, the clamping force can be distributed to multiple contact points of crests and troughs. This multi-point flexible support avoids the problems of insulation layer cracking and wire deformation caused by excessive local pressure in ordinary clips. It is especially suitable for thin-walled wires (such as silicone insulated wires) or multi-strand stranded wires (to prevent single strands from being crushed). Furthermore, when the wire is subjected to force and shakes, the slight bending of the crests and troughs will be converted into elastic potential energy instead of directly transmitting rigid impact force, thereby reducing fretting wear and instantaneous loosening at the contact interface between the wire and the clips.

[0011] By rotating the rotating ring as described above, the clamps can hold and release the wires, allowing workers to easily install and remove the wires. This avoids the following problems found in existing technologies: First, existing methods typically involve placing the wire into the terminal and then using hydraulic pliers to flatten the terminal, thus fixing the wire inside the terminal. This method is inconvenient for wire removal, and the deformation of the terminal under pressure will affect its subsequent use. Second, existing methods also use bolts to fix the wire to the terminal. This method requires auxiliary tools when workers are removing and installing wires, making it inconvenient. In addition, after repeated turning, the screws may strip, affecting the installation and removal of the terminal and the wire.

[0012] The adjustable design of the air bladder prevents it from contacting the wire during repeated insertion and removal, thus avoiding friction between the wire and the air bladder. This also solves the problem in existing technologies where a sealing ring is used to seal the gap between the wire and the terminal port. Although the sealing ring can play a sealing role, it can cause severe wear to the sealing ring during repeated insertion and removal, leading to the failure of the sealing effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the terminal block of the present invention that can be repeatedly installed and disassembled;

[0014] Figure 2 This is a schematic diagram of the internal structure of the terminal disclosed in the present utility model of a repeatedly installable and detachable wiring terminal.

[0015] Figure 3 This is an enlarged view of point A of the terminal block that can be repeatedly installed and disassembled according to this utility model.

[0016] The meanings of the reference numerals in the figure are as follows: 1-terminal, 2-rotating ring, 3-rope, 4-clamp, 41-arc surface, 5-spring column, 6-guide ring, 7-sealing ring, 71-airbag part, 8-connecting tube, 9-connecting rope, 10-piston rod, 11-elastic element, 01-wire. Detailed Implementation

[0017] 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.

[0018] Example 1

[0019] A type of terminal block 1 that can be repeatedly installed and removed, such as Figure 1-3 As shown, it includes terminal 1;

[0020] It also includes a rotating ring 2, ropes 3, clips 4, and spring posts 5; the rotating ring 2 is rotatably connected to the terminal 1; three ropes 3 are fixedly connected to the rotating ring 2 in a ring-shaped and equidistant arrangement, and one end of each rope 3 passes through the terminal 1; each terminal 1 is fixedly connected to a clip 4; each clip 4 is fixedly connected to two spring posts 5 that are symmetrically distributed on the left and right, and one end of each spring post 5 is fixedly connected to the terminal 1.

[0021] Clip 4 is designed to be corrugated.

[0022] The troughs on clip 4 are set as arc surfaces 41.

[0023] It also includes a guide ring 6, a sealing ring 7, a connecting tube 8, a connecting rope 9, a piston rod 10, and an elastic element 11; two guide rings 6 are fixedly connected to the terminal 1 in a vertically symmetrical arrangement; a sealing ring 7 is fixedly connected to the inside of the terminal 1, and the sealing ring 7 has a liquid storage channel inside; an air bladder 71 is provided on the sealing ring 7; the liquid storage channel on the sealing ring 7 is connected to two connecting tubes 8 in a vertically symmetrical arrangement; two connecting ropes 9 are fixedly connected to the rotating ring 2 in a vertically symmetrical arrangement, and the connecting ropes 9 pass through the guide ring 6; a piston rod 10 is slidably connected inside each connecting tube 8, and the piston rod 10 is fixedly connected to one end of the connecting rope 9; an elastic element 11 is fixedly connected to each piston rod 10, and one end of the elastic element 11 is fixedly connected to the connecting tube 8.

[0024] When using the terminal block 1 that can be repeatedly installed and removed, firstly, hydraulic oil is stored in both the sealing ring 7 and the connecting pipe 8, and the airbag 71 is initially inflated.

[0025] Next, when it is necessary to install terminal 1 and wire 01, the operator will rotate the rotating ring 2 clockwise by 90 degrees. During this process, the rotating ring 2 will pull the rope 3, which in turn will pull the clamp 4 closer to the rotating ring 2, and the spring column 5 will be compressed. At the same time, the rotating ring 2 will also pull the connecting rope 9 to slide on the guide ring 6, and the piston rod 10 will move synchronously with the connecting rope 9. The elastic element 11 will be compressed, and as the internal space of the connecting tube 8 increases, the hydraulic oil will no longer squeeze the air bladder 71. Therefore, the air bladder 71 will change from an inflated state to a normal state. Then, the operator can strip the wire 01 to the appropriate length and insert the stripped part of the wire 01 completely into terminal 1. During this process, since the air bladder 71 and the clamp 4 are far away from the end of the wire 01, the air bladder 71 and the clamp 4 will not rub or limit the wire 01 when it is inserted, so that the wire 01 can be quickly inserted into terminal 1.

[0026] Next, the staff rotates the rotating ring 2 counterclockwise by 90 degrees to reset it. The spring column 5 changes from the compressed state to the normal state. During the change of the spring column 5, it will drive the clamp 4 to move closer to the wire 01. Then the clamp 4 will contact the wire 01. Under the action of the spring column 5, the clamp 4 will clamp and fix the wire 01. At the same time, since the clamp 4 is set as corrugated, the concave and convex curved surface of the corrugated clamp 4 forms a continuous wave-shaped contact band. Compared with the planar hard contact of the ordinary clamp 4, the clamping force can be distributed to multiple contact points of wave crests and troughs. This multi-point flexible support avoids the problem of insulation layer cracking and wire 01 deformation caused by excessive local pressure of the ordinary clamp 4. It is especially suitable for thin-walled wires 01 (such as silicone insulated wires) or multi-strand stranded wires (to prevent single strands from being crushed). When the wire 01 is shaken by force, the small bending of the wave crests and troughs will be converted into elastic potential energy instead of directly transmitting rigid impact force, thereby reducing the micro-motion wear and instantaneous loosening of the contact interface between the wire 01 and the clamp 4.

[0027] At the same time, since the trough of the clip 4 is set as an arc surface 41, the trough of the clip 4 is not too sharp, which would cause the trough on the clip 4 to easily crush the insulation layer on the wire 01 or damage the wire 01 (especially thin wire 01) when the clip 4 clamps the wire 01.

[0028] Meanwhile, by rotating the rotating ring 2 as described above, the clamping plate 4 clamps and fixes the wire 01, allowing the operator to easily install and remove the wire 01. This avoids the following problems in the prior art: First, the existing method usually involves placing the wire 01 into the terminal 1 and then using hydraulic pliers to flatten the terminal 1 to fix the wire 01 inside the terminal 1. This method is not convenient for removing the wire 01, and the subsequent use of the terminal 1 will be affected after the terminal 1 is deformed by compression. Second, the existing method also uses bolts to fix the wire 01 to the terminal 1. This method requires the use of auxiliary tools when the operator removes and installs the wire 01, which is not convenient. In addition, after the screw is turned many times, the screw may strip, which will affect the installation and removal of the terminal 1 and the wire 01.

[0029] Meanwhile, when the rotating ring 2 rotates 90 degrees counterclockwise to reset, since the connecting rope 9 no longer pulls the piston rod 10, the elastic element 11 will change from a compressed state to a normal state. During the change of the elastic element 11, the piston rod 10 will move to the left to reset. The reset piston rod 10 will then squeeze the hydraulic oil in the connecting pipe 8, causing the hydraulic oil in the connecting pipe 8 to enter the reservoir in the sealing ring 7. The hydraulic oil will then force the air bladder 71 to expand, so that the expanded air bladder 71 contacts the wire 01 and seals the gap between the wire 01 and the terminal 1 port, thereby preventing dust and moisture from entering the terminal 1 through the gap, causing the wire 01 wiring part to become damp, which in turn leads to rust and corrosion of the wiring part, thus causing problems such as poor electrical connection.

[0030] Thus, by adjusting the airbag part 71, the airbag part 71 will not come into contact with the wire 01 during the reciprocating insertion and removal process, thereby avoiding friction between the wire 01 and the airbag part 71. At the same time, it also solves the problem in the prior art where the existing sealing ring is used to seal the gap between the wire 01 and the terminal 1 port. Although the sealing ring can play a sealing role, the wire 01 will cause serious wear to the sealing ring during the reciprocating insertion and removal process, resulting in the failure of the sealing effect of the sealing ring.

[0031] It should be noted that when it is necessary to repeatedly plug and unplug wire 01, the operator can do so by rotating the rotating ring 2.

[0032] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A terminal block that can be repeatedly installed and removed, comprising a terminal (1); characterized in that: It also includes a rotating ring (2), a rope (3), a clamp (4) and a spring post (5); the rotating ring (2) is rotatably connected to the terminal (1); several ropes (3) are fixedly connected to the rotating ring (2), and one end of the rope (3) passes through the terminal (1); a clamp (4) is fixedly connected to each terminal (1); several spring posts (5) are fixedly connected to each clamp (4), and one end of the spring post (5) is fixedly connected to the terminal (1).

2. A terminal block that can be repeatedly installed and disassembled according to claim 1, characterized in that: The clip (4) is set to be corrugated.

3. A terminal block that can be repeatedly installed and disassembled according to claim 1, characterized in that: The troughs on the clip (4) are set as arc surfaces (41).

4. A terminal block that can be repeatedly installed and disassembled according to claim 3, characterized in that: It also includes a guide ring (6), a sealing ring (7), a connecting tube (8), a connecting rope (9), a piston rod (10), and an elastic element (11); several guide rings (6) are fixedly connected to the terminal (1); a sealing ring (7) is fixedly connected to the inside of the terminal (1), and a liquid storage channel is provided inside the sealing ring (7); an air bladder (71) is provided on the sealing ring (7); several connecting tubes (8) are connected to the liquid storage channel on the sealing ring (7); several connecting ropes (9) are fixedly connected to the rotating ring (2), and the connecting ropes (9) pass through the guide ring (6); a piston rod (10) is slidably connected inside each connecting tube (8), and one end of the piston rod (10) is fixedly connected to the connecting rope (9); an elastic element (11) is fixedly connected to each piston rod (10), and one end of the elastic element (11) is fixedly connected to the connecting tube (8).

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