Plug-in current type test terminal

Abstract

The utility model provides a plug-in current type test terminal. The plug-in current type test terminal comprises a shell, a wire pressing frame and a conductive plug-in, the two wire pressing frames are installed in the shell in the mode that the two wire pressing frames are opposite to each other, conductive connecting columns are arranged on the tops of the wire pressing frames, first installation holes are formed in the conductive connecting columns, and grooves are formed in inner cavities of the first installation holes. The conductive plug-in comprises a plug-in body, the plug-in body is provided with an insertion rod matched with the first installation hole, the insertion rod is provided with a second installation hole, the extension direction of the second installation hole is perpendicular to the direction in which the insertion rod is inserted into the first installation hole, a conductive block and an elastic component are installed in the second installation hole, and the first end of the elastic component is connected with the conductive block. The second end of the elastic component is connected with the bottom of the second mounting hole; the conductive block is in sliding fit with the second mounting hole; rapid connection and disconnection of the current type test terminal can be realized by plugging and unplugging the conductive plug-in, and installation and disassembly are simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an insertion-type current-type test terminal. Background Art

[0002] In power production accidents, there are a large number of accident cases caused by loose current terminals. If the secondary circuit of the current transformer is open, it will cause the transformer core to be saturated and the current waveform to be distorted. In addition, the overvoltage in the secondary circuit of the current transformer will generate arcs and heat, which will quickly melt and carbonize the terminal block. The operation of the relay protection device will cause large-scale power outages, equipment burning, and casualties. The current test terminals used in the secondary circuit of the current transformer are often in poor contact during operation due to some reasons (the terminal block screws are not tightened in place when the equipment is put into operation, the fasteners that are under stress for a long time are aged and broken, and the unit vibrates during operation, etc.), resulting in instantaneous opening of the secondary circuit of the current. Therefore, in the work of the secondary circuit of the current transformer, it is a basic job for the power maintenance personnel to check the circuit and tighten the terminal block screws of all current circuits. However, the sliding current test terminals that are widely used in actual production have the problem of the middle sliding connecting piece being broken due to repeated stress aging over the years, and some connecting pieces not being properly fastened due to negligence of personnel. The sliding connecting piece is connected to the wire frames on both sides by bolts, which makes installation and disassembly inconvenient, and there is a safety hazard of loose bolts. Utility Model Content

[0003] The utility model aims to provide a plug-in current type test terminal, which can realize rapid connection and disconnection of the current type test terminal by plugging and pulling out the conductive plug-in, thereby simplifying installation and disassembly. At the same time, the structure of the groove and the conductive block clamping connection replaces the bolt fastening connection in the prior art, so that the connection is more reliable and the safety hazard caused by loose bolts is avoided.

[0004] In order to realize the above technical features, the purpose of the utility model is achieved as follows:

[0005] An insertion type current type test terminal comprises a housing, a wire pressing frame and a conductive plug-in;

[0006] The two wire pressing frames are installed in the housing at opposite sides of each other, a conductive connecting column is provided on the top of the wire pressing frame, a first mounting hole is provided on the conductive connecting column, and a groove is provided in the inner cavity of the first mounting hole;

[0007] The conductive plug-in comprises a plug-in body, a plug-in body is provided with an insertion rod adapted to the first mounting hole, a second mounting hole is provided on the insertion rod, the extension direction of the second mounting hole is perpendicular to the direction in which the insertion rod is inserted into the first mounting hole, a conductive block and an elastic component are installed in the second mounting hole, a first end of the elastic component is connected to the conductive block, a second end of the elastic component is connected to the bottom of the second mounting hole, and the conductive block and the second mounting hole form a sliding fit;

[0008] There are two insertion rods, and the conductive blocks installed in the second mounting holes on the two insertion rods are connected via wires.

[0009] The elastic component is a spring.

[0010] The end of the insertion rod is provided with a guide angle.

[0011] The conductive connecting column provided by the utility model is provided with a first mounting hole, and the inner cavity of the first mounting hole is provided with a groove, and the conductive block can be retracted into the second mounting hole along the extension direction of the second mounting hole. When the conductive plug-in is inserted and connected, when the second mounting hole is just aligned with the groove, the elastic component pushes the conductive block into the groove and clamps it, so that the wire pressing frame in the shell is connected through the conductive plug-in. When the current type test terminal needs to be disconnected, the conductive plug-in is pulled out, and the conductive block is squeezed and compressed back into the second mounting hole, and then the conductive plug-in is pulled out of the first mounting hole to achieve disconnection. Therefore, the current type test terminal can be quickly connected and disconnected by plugging and pulling out the conductive plug-in, which simplifies installation and disassembly. At the same time, the structure of clamping the groove and the conductive block replaces the bolt-tightening connection in the prior art, so that the connection is more convenient and reliable, and the safety hazard caused by loose bolts is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 A schematic diagram of the structure of an insertion-type current-type test terminal provided by an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the structure of a wire pressing frame provided in an embodiment of the utility model;

[0015] Figure 3 The embodiment of the utility model provides Figure 2 Middle M partial enlarged view;

[0016] Figure 4 A schematic diagram of the structure of a conductive plug-in provided in an embodiment of the utility model;

[0017] In the figure: housing 1, wire pressing frame 2, conductive plug-in 3, conductive connecting column 2a, first mounting hole 2b, groove 2c, plug-in body 3a, plug-in rod 3b, second mounting hole 3c, conductive block 3d, elastic component 3e, wire 3f, guide angle 3g. DETAILED DESCRIPTION

[0018] The implementation modes of the present utility model are further described below in conjunction with the accompanying drawings.

[0019] See attached Figure 1-4 A plug-in current type test terminal, comprising a housing 1, a wire pressing frame 2 and a conductive plug-in 3; two wire pressing frames 2 are installed in the housing 1 at opposite sides of each other, a conductive connecting column 2a is provided on the top of the wire pressing frame 2, a first mounting hole 2b is provided on the conductive connecting column 2a, and a groove 2c is provided in the inner cavity of the first mounting hole 2b; the conductive plug-in 3 comprises a plug-in body 3a, a plug-in body 3a is provided with a plug-in rod 3b adapted to the first mounting hole 2b, a second mounting hole 3c is provided on the plug-in rod 3b, and the second mounting hole The extension direction of 3c is perpendicular to the direction in which the insertion rod 3b is inserted into the first mounting hole 2b, and a conductive block 3d and an elastic component 3e are installed in the second mounting hole 3c, the first end of the elastic component 3e is connected to the conductive block 3d, and the second end of the elastic component 3e is connected to the bottom of the second mounting hole 3c, and the conductive block 3d and the second mounting hole 3c form a sliding fit; there are two insertion rods 3b, and the conductive blocks 3d installed in the second mounting holes 3c on the two insertion rods 3b are connected by a wire 3f.

[0020] The conductive connecting column 2a of the current type test terminal of the utility model is provided with a first mounting hole 2b, and the inner cavity of the first mounting hole 2b is provided with a groove 2c, and the conductive block 3d can be retracted into the second mounting hole 3c along the extension direction of the second mounting hole 3c. When the conductive plug-in 3 is inserted and connected, when the second mounting hole 3c is just aligned with the groove 2c, the elastic component 3e pushes the conductive block 3d into the groove 2c and clamps it, so that the wire pressing frame 2 in the shell 1 is connected through the conductive plug-in 3. When the current type test terminal needs to be disconnected, the conductive plug-in 3 is pulled out, and the conductive block 3d is squeezed and compressed back into the second mounting hole 3c, and then the conductive plug-in 3 is pulled out of the first mounting hole 2b to achieve disconnection. Therefore, the current type test terminal can be quickly connected and disconnected by plugging and pulling out the conductive plug-in 3, which simplifies installation and disassembly. At the same time, the structure of clamping the groove 2c and the conductive block 3d replaces the bolt fastening connection in the prior art, which makes disassembly and assembly more convenient and reliable, and avoids the safety hazards caused by loose bolts.

[0021] Furthermore, the elastic component 3e is a spring. The function of the elastic component is: when the insertion rod 3b is inserted into the first mounting hole 2b, due to the thrust of the inner wall of the first mounting hole 2b on the conductive block 3d, the conductive block 3d shrinks along the extension direction of the second mounting hole 3c and approaches the second mounting hole, the elastic component 3e is squeezed and has elastic force, and when the second mounting hole 3c is just aligned with the groove 2c, the elastic component 3e pushes the conductive block 3d into the groove 2c and snaps it in place. It can be understood that the elastic component 3e can also be a spring sheet, elastic rubber, etc.

[0022] Furthermore, a guide angle 3g is provided at the end of the insertion rod 3b so that the insertion rod 3b can be inserted into the first mounting hole 2b more smoothly.

Claims

1. An insertion type current type test terminal, characterized in that: It comprises a housing (1), a wire pressing frame (2) and a conductive plug-in (3); The two wire pressing frames (2) are installed in the housing (1) at opposite sides of each other, a conductive connection column (2a) is provided on the top of the wire pressing frame (2), a first installation hole (2b) is provided on the conductive connection column (2a), and a groove (2c) is provided in the inner cavity of the first installation hole (2b); The conductive plug-in (3) comprises a plug-in body (3a), the plug-in body (3a) is provided with an insertion rod (3b) adapted to the first mounting hole (2b), the insertion rod (3b) is provided with a second mounting hole (3c), the extension direction of the second mounting hole (3c) is perpendicular to the direction in which the insertion rod (3b) is inserted into the first mounting hole (2b), a conductive block (3d) and an elastic component (3e) are installed in the second mounting hole (3c), a first end of the elastic component (3e) is connected to the conductive block (3d), a second end of the elastic component (3e) is connected to the bottom of the second mounting hole (3c), and the conductive block (3d) and the second mounting hole (3c) form a sliding fit; There are two insertion rods (3b), and the conductive blocks (3d) installed in the second mounting holes (3c) on the two insertion rods (3b) are connected via a wire (3f).

2. The plug-in current test terminal according to claim 1, characterized in that: The elastic component (3e) is a spring.

3. The plug-in current test terminal according to claim 1, characterized in that: The end of the insertion rod (3b) is provided with a guide angle (3g).

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