An internally shorted terminal strip

Abstract

The application discloses an internal short-circuit type terminal strip, which comprises a shell, a first short-circuit conductor arranged in the shell, and a plurality of mutually independent second short-circuit conductors and a short-circuit conductor selection device arranged in the shell. The two ends of the first short-circuit conductor are respectively connected with a first external wire and a second external wire to realize the connection of the terminal strip to the two wires. The short-circuit conductor selection device is movably connected with the first short-circuit conductor, and is connected with one or more second short-circuit conductors during rotation. The application is provided with a plurality of groups of short-circuit conductors, and one group of short-circuit conductors is selected by the short-circuit conductor selection device to be connected, without additional wiring, so that the short-circuit point can be quickly converted, and the wiring efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of terminal blocks, and more specifically to an internally short-circuited terminal block. Background Technology

[0002] Terminal blocks, as devices for connecting different wires, are widely used in the power industry. Each unit of a terminal block typically connects only one wire to each side. However, in engineering practice, it is often necessary to short-circuit wires connected to different terminal block units. Currently, the common methods for short-circuiting are to connect the two units with an additional wire or to use a specially designed short-circuit conductor. Connecting different units with an additional wire involves complex wiring, and when there are many connections, multiple wires need to be fixed in the same wire mounting slot, which can easily lead to poor contact. When using a specially designed short-circuit conductor, if the two units to be shorted are far apart, a longer short-circuit conductor is required, and this conductor can block connections between other units between those two units. Summary of the Invention

[0003] The purpose of this application is to provide an internal short-circuit terminal block, which solves the problem in the prior art that the terminal block can only short-circuit two wires, resulting in complicated wiring when connecting more wires.

[0004] This invention is achieved through the following technical solution:

[0005] An internal short-circuit terminal block includes a housing, inside which a first short-circuit conductor is disposed. The two ends of the first short-circuit conductor are respectively connected to a first external wire and a second external wire to realize the connection of the terminal block to the two wires.

[0006] It also includes a plurality of independent second shorting conductors disposed within the housing and a shorting conductor selection device, wherein the shorting conductor selection device is movably connected to the first shorting conductor and is connected to one or more second shorting conductors during rotation.

[0007] In one possible implementation, the shorting conductor selection device includes a third shorting conductor and a plurality of shorting protrusions disposed on the side of the third shorting conductor;

[0008] The shorting protrusion is corresponding to one or more second shorting conductors, and the height of each shorting protrusion is different; when the third shorting conductor rotates one revolution, each shorting protrusion contacts the second shorting conductor only once, and the bottom end of the third shorting conductor contacts the first shorting conductor.

[0009] In one possible implementation, the third shorting conductor is cylindrical, the outer casing has a cylindrical channel, the third shorting conductor is disposed in the cylindrical channel, and the axis of the third shorting conductor coincides with that of the cylindrical channel.

[0010] The side of the shorting protrusion closest to the cylindrical channel is set as an arc surface, and the arc surface of the shorting protrusion is in contact with the inner wall of the cylindrical channel. One end of the second shorting conductor is set as an arc surface, and the arc surface of the second shorting conductor is embedded in the cylindrical channel as part of the inner wall, so that when the third shorting conductor rotates, the shorting protrusion is connected to the corresponding second shorting conductor.

[0011] In one possible implementation, a connecting post is provided at the middle position of the first shorting conductor, and the end of the connecting post away from the first shorting conductor is located at the bottom of the cylindrical channel. The bottom end of the third shorting conductor is movably connected to the connecting post on the first shorting conductor so that the third shorting conductor can rotate while maintaining connection with the first shorting conductor.

[0012] In one possible implementation, the end of the third shorting conductor away from the first shorting conductor is provided with a groove to facilitate the rotation of the third shorting conductor.

[0013] In one possible implementation, the housing is provided with a first wiring channel, one end of the first shorting conductor is disposed in the first wiring channel, and the first external wire is disposed in the first wiring channel, and the first external wire is connected to one end of the first shorting conductor in the first wiring channel.

[0014] In one possible implementation, the housing is provided with a second wiring channel, the other end of the first shorting conductor is disposed in the second wiring channel, and the second external wire is disposed in the second wiring channel, and the second external wire is connected to the other end of the first shorting conductor in the second wiring channel.

[0015] In one possible implementation, it further includes a first fastening bolt, and the housing is provided with a first screw hole that mates with the first fastening bolt. The axis of the first screw hole is perpendicular to the axis of the first wiring channel, and the first screw hole communicates with the first wiring channel.

[0016] When the first fastening bolt is placed in the first screw hole, it presses the wiring portion of the first external wire onto one end of the first short-circuiting conductor, thereby fixing the first external wire to the first short-circuiting conductor.

[0017] In one possible implementation, a second fastening bolt is also included, and the housing is provided with a second threaded hole that mates with the second fastening bolt. The axis of the second threaded hole is perpendicular to the axis of the second wiring channel, and the second threaded hole communicates with the second wiring channel.

[0018] When the second fastening bolt is placed in the second screw hole, it presses the wiring portion of the second external wire onto the other end of the first short-circuit conductor, thereby fixing the second external wire to the first short-circuit conductor.

[0019] In one possible implementation, the housing is provided with a plurality of through holes that mate one-to-one with the second shorting conductor, so that external wires can be connected to the second shorting conductor through the through holes.

[0020] This application provides an internal shorting terminal block with multiple sets of shorting conductors. A shorting conductor selection device selects one set of shorting conductors for connection, eliminating the need for additional wiring and enabling quick switching of shorting points, thus improving wiring efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of a first structure of an internally short-circuited terminal block provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of a second structure of an internally short-circuited terminal block provided in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the short-circuit conductor selection device provided in an embodiment of this application.

[0025] The markings and corresponding component names in the attached diagram are as follows:

[0026] 1-Outer casing, 2-First fastening bolt, 3-Second fastening bolt, 4-First external conductor, 5-Second external conductor, 6-First shorting conductor, 7-Shorting conductor selection device, 8-Second shorting conductor, 9-Third shorting conductor, 10-Groove, 11-Shorting protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0028] Example

[0029] like Figure 1 and Figure 2As shown, an internal short-circuit terminal block includes a housing 1, inside which a first short-circuit conductor 6 is disposed. The two ends of the first short-circuit conductor 6 are respectively connected to a first external wire 4 and a second external wire 5 to realize the connection of the terminal block to the two wires.

[0030] The internal short-circuit terminal block also includes a plurality of independent second short-circuit conductors 8 disposed in the housing 1 and a short-circuit conductor selection device 7. The short-circuit conductor selection device 7 is movably connected to the first short-circuit conductor 6, and the short-circuit conductor selection device 7 is connected to one or more second short-circuit conductors 8 during rotation.

[0031] Multiple independent second shorting conductors 8 can be evenly arranged around the shorting conductor selection device 7, or arranged in one, two, or more rows around the shorting conductor selection device 7. When the shorting conductor selection device 7 rotates, it contacts different second shorting conductors 8, thereby realizing the selection function. Only the units to be shorted need to be pre-connected to different second shorting conductors 8, and different units can be selected for shorting during use without additional wiring, thus achieving quick shorting and avoiding complex wiring. This application provides an internal shorting terminal block for wire connection and facilitates shorting between different units.

[0032] like Figure 3 As shown, the shorting conductor selection device 7 includes a third shorting conductor 9 and a plurality of shorting protrusions 11 disposed on the side of the third shorting conductor 9. Each shorting protrusion 11 corresponds to one or more second shorting conductors 8, and each shorting protrusion 11 has a different height. When the third shorting conductor 9 rotates one revolution, each shorting protrusion 11 contacts the second shorting conductor 8 only once, and the bottom end of the third shorting conductor 9 contacts the first shorting conductor 6.

[0033] The shorting conductor selection device 7 has three shorting protrusions 11, half the number of the second shorting conductor 8. The angle between the centers of the protrusions is 45°, and the angle of the protrusion body itself is less than 45°, ensuring that at most one shorting protrusion 11 is connected to the second shorting conductor 8 at any given time. For example, as... Figure 1 The shorting conductor selection device 7 shown can be equipped with three shorting protrusions 11, each corresponding to two second shorting conductors 8. However, each shorting protrusion 11 can only be connected to one second shorting conductor 8 at most. When the shorting conductor selection device 7 is rotated, the shorting protrusions 11 also rotate with the device, thereby connecting and disconnecting the shorting protrusions 11 from the second shorting conductors 8. It is worth noting that different shorting protrusions 11 can be arranged in a row or positioned in different directions to achieve different combinations of shorting.

[0034] In one possible implementation, the third shorting conductor 9 is cylindrical, and a cylindrical channel is provided on the outer shell 1. The third shorting conductor 9 is disposed within the cylindrical channel, and the axis of the third shorting conductor 9 coincides with that of the cylindrical channel. The side of the shorting protrusion 11 near the cylindrical channel is set as an arc surface, and the arc surface of the shorting protrusion 11 fits against the inner wall of the cylindrical channel. One end of the second shorting conductor 8 is set as an arc surface, and the arc surface of the second shorting conductor 8 is embedded in the cylindrical channel as part of the inner wall, so that when the third shorting conductor 9 rotates, the shorting protrusion 11 communicates with the corresponding second shorting conductor 8.

[0035] When multiple shorting protrusions 11 are arranged around the third shorting conductor 9, the third shorting conductor 9 will not tilt because it is supported by the shorting protrusions 11 on all four sides. However, when there are no shorting protrusions 11 within a certain arc surface on the side of the third shorting conductor 9 (for example, when multiple shorting protrusions 11 are arranged in a row), the third shorting conductor 9 may tilt. Therefore, limiting discs can be provided at the top and bottom of the third shorting conductor 9. These limiting discs do not contact any of the second shorting conductors 8, and the diameter of the limiting discs is the same as the inner diameter of the cylindrical channel, to prevent the third shorting conductor 9 from tilting while ensuring that the third shorting conductor 9 can rotate normally.

[0036] In one possible implementation, a connecting post is provided at the middle position of the first shorting conductor 6, and the end of the connecting post away from the first shorting conductor 6 is provided at the bottom of the cylindrical channel. The bottom end of the third shorting conductor 9 is movably connected to the connecting post on the first shorting conductor 6 so that the third shorting conductor 9 can rotate when it is connected to the first shorting conductor 6.

[0037] In one possible implementation, a groove 10 is provided at the end of the third shorting conductor 9 furthest from the first shorting conductor 6 to facilitate rotation of the third shorting conductor 9. A screwdriver can be used to select which shorting protrusions 11 connect to the corresponding second shorting conductors 8, thus selecting which second shorting conductors 8 the third shorting conductor 9 connects to. By selecting the shorting conductor selection device 7 of any terminal block unit to connect to the same conductor, shorting between different terminal block units can be achieved. When other units need to be shorted, the second shorting conductor 8 inside another terminal block can be selected. When none of the three protrusions are connected to the second shorting conductor 8 inside the terminal block, the terminal block unit is not shorted to other units.

[0038] In one possible implementation, the housing 1 is provided with a first wiring channel, one end of the first shorting conductor 6 is disposed in the first wiring channel, and the first external wire 4 is disposed in the first wiring channel, and the first external wire 4 is connected to one end of the first shorting conductor 6 in the first wiring channel.

[0039] In one possible implementation, the housing 1 is provided with a second wiring channel, the other end of the first shorting conductor 6 is disposed in the second wiring channel, and the second external wire 5 is disposed in the second wiring channel, and the second external wire 5 is connected to the other end of the first shorting conductor 6 in the second wiring channel.

[0040] In one possible implementation, the internal short-circuit terminal block further includes a first fastening bolt 2, and the housing 1 is provided with a first screw hole that mates with the first fastening bolt 2. The axis of the first screw hole is perpendicular to the axis of the first wiring channel, and the first screw hole communicates with the first wiring channel.

[0041] When the first fastening bolt 2 is placed in the first screw hole, it presses the wiring portion of the first external wire 4 onto one end of the first shorting conductor 6, thereby fixing the first external wire 4 to the first shorting conductor 6.

[0042] Optionally, the diameter of the first wiring channel is slightly larger than the greater of the widths of the first external conductor 4 and the first shorting conductor 6, and this, combined with the first fastening bolt 2, secures the first external conductor 4 and the first shorting conductor 6. For example, if the diameter of the first external conductor 4 is A, and the width of the first shorting conductor 6 perpendicular to the channel is B, and A > B, then the diameter of the first wiring channel can be set to 1.1A or 1.2A. This ensures that the first external conductor 4 can extend into the first wiring channel and can be stacked on the first shorting conductor 6. Then, the first fastening bolt 2 is tightened, applying a compressive force to the first external conductor 4 to fix it in place. Limiting the diameter of the first wiring channel ensures that the first external conductor 4 and the first shorting conductor 6 remain in contact when the first fastening bolt 2 is pressed down.

[0043] In one possible implementation, the internal short-circuit terminal block further includes a second fastening bolt 3, and the housing 1 is provided with a second screw hole that mates with the second fastening bolt 3. The axis of the second screw hole is perpendicular to the axis of the second wiring channel, and the second screw hole communicates with the second wiring channel.

[0044] When the second fastening bolt 3 is installed in the second screw hole, it presses the wiring portion of the second external wire 5 onto the other end of the first short-circuit conductor 6, thereby fixing the second external wire 5 to the first short-circuit conductor 6.

[0045] The setup of the second wiring channel is similar to that of the first wiring channel, and will not be described in detail here.

[0046] In one possible implementation, the housing 1 is provided with a plurality of through holes that mate one-to-one with the second shorting conductor 8, so that external wires can be connected to the second shorting conductor 8 through the through holes.

[0047] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An internally short-circuited terminal block, characterized in that, Includes a housing (1), inside which a first short-circuit conductor (6) is provided, and the two ends of the first short-circuit conductor (6) are respectively connected to a first external wire (4) and a second external wire (5) to realize the connection of the terminal block to the two wires; It also includes a plurality of independent second short-circuit conductors (8) disposed in the housing (1) and a short-circuit conductor selection device (7), wherein the short-circuit conductor selection device (7) is movably connected to the first short-circuit conductor (6), and the short-circuit conductor selection device (7) is connected to one or more second short-circuit conductors (8) during rotation; The shorting conductor selection device (7) includes a third shorting conductor (9) and a plurality of shorting protrusions (11) disposed on the side of the third shorting conductor (9). The shorting protrusion (11) is provided in correspondence with one or more second shorting conductors (8), and the height of each shorting protrusion (11) is different; when the third shorting conductor (9) rotates one revolution, each shorting protrusion (11) contacts the second shorting conductor (8) only once, and the bottom end of the third shorting conductor (9) contacts the first shorting conductor (6).

2. The internal short-circuit terminal block according to claim 1, characterized in that, The third short-circuit conductor (9) is cylindrical, and a cylindrical channel is provided on the outer shell (1). The third short-circuit conductor (9) is disposed in the cylindrical channel, and the axis of the third short-circuit conductor (9) coincides with that of the cylindrical channel. The side of the shorting protrusion (11) near the cylindrical channel is set as an arc surface, and the arc surface of the shorting protrusion (11) fits against the inner wall of the cylindrical channel. One end of the second shorting conductor (8) is set as an arc surface, and the arc surface of the second shorting conductor (8) is embedded in the cylindrical channel as part of the inner wall, so that when the third shorting conductor (9) rotates, the shorting protrusion (11) communicates with the corresponding second shorting conductor (8).

3. The internal short-circuit terminal block according to claim 1, characterized in that, A connecting post is provided at the middle position of the first shorting conductor (6). The end of the connecting post away from the first shorting conductor (6) is located at the bottom of the cylindrical channel. The bottom end of the third shorting conductor (9) is movably connected to the connecting post on the first shorting conductor (6) so that the third shorting conductor (9) can rotate when it is connected to the first shorting conductor (6).

4. The internal short-circuit terminal block according to claim 3, characterized in that, The third shorting conductor (9) has a groove (10) at the end away from the first shorting conductor (6) to facilitate the rotation of the third shorting conductor (9).

5. The internal short-circuit terminal block according to claim 1, characterized in that, The outer casing (1) is provided with a first wiring channel, one end of the first short-circuiting conductor (6) is provided in the first wiring channel, and the first external wire (4) is provided in the first wiring channel. The first external wire (4) is connected to one end of the first short-circuiting conductor (6) in the first wiring channel.

6. The internal short-circuit terminal block according to claim 5, characterized in that, The outer casing (1) is provided with a second wiring channel, the other end of the first short-circuiting conductor (6) is provided in the second wiring channel, and the second external wire (5) is provided in the second wiring channel. The second external wire (5) is connected to the other end of the first short-circuiting conductor (6) in the second wiring channel.

7. The internal short-circuit terminal block according to claim 6, characterized in that, It also includes a first fastening bolt (2), and the outer shell (1) is provided with a first screw hole that mates with the first fastening bolt (2). The axis of the first screw hole is perpendicular to the axis of the first wiring channel, and the first screw hole is connected to the first wiring channel. When the first fastening bolt (2) is placed in the first screw hole, it presses the wiring part of the first external wire (4) onto one end of the first short-circuit conductor (6) to achieve the fixation of the first external wire (4) and the first short-circuit conductor (6).

8. The internal short-circuit terminal block according to claim 6, characterized in that, It also includes a second fastening bolt (3), and the outer shell (1) is provided with a second screw hole that mates with the second fastening bolt (3). The axis of the second screw hole is perpendicular to the axis of the second wiring channel, and the second screw hole is connected to the second wiring channel. When the second fastening bolt (3) is placed in the second screw hole, it presses the wiring part of the second external wire (5) onto the other end of the first short-circuit conductor (6) to achieve the fixation of the second external wire (5) and the first short-circuit conductor (6).

9. The internal short-circuit terminal block according to claim 1, characterized in that, The outer casing (1) is provided with a plurality of through holes that mate with the second short-circuit conductor (8) so that external wires can be connected to the second short-circuit conductor (8) through the through holes.

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