CN113451961A

CN113451961A - Terminal box

Info

Publication number: CN113451961A
Application number: CN202110812244.XA
Authority: CN
Inventors: 龙浪清; 黄文亮
Original assignee: Guangdong Power Grid Co Ltd; Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-09-28

Abstract

The invention provides a junction box, which relates to the field of power construction and comprises a shell, a plurality of voltage units, a plurality of current units and a plurality of voltage units, wherein each voltage unit comprises a voltage incoming line terminal, three voltage outgoing line terminals and a voltage clamping piece, which are arranged in the shell; the two voltage units are provided with a current unit, the current unit comprises two current incoming line terminals, two current outgoing line terminals and a current clamping piece, the current clamping pieces are arranged on the current incoming line terminals and the current outgoing line terminals, and the current clamping piece is provided with a second clamping state tightly attached to the current incoming line terminals or the current outgoing line terminals and a second wire inserting state spaced from the current incoming line terminals or the current outgoing line terminals. The junction box provided by the invention has the advantages that the wiring difficulty is reduced, the fault rate is reduced, and the number of screws used by the junction box is reduced.

Description

Terminal box

Technical Field

The invention relates to the technical field of electric power, in particular to a junction box.

Background

When a user needs to be measured and connected through a mutual inductor, the junction box is used for fixing a secondary wire through screws, the voltage end is connected with the voltage piece to open and break the voltage, the current end is connected with the current piece to open and short secondary current, a hidden fault is easily generated, and loss is caused to a power supply enterprise. The terminal box wiring process in the existing market is loaded down with trivial details, uses the screw many during terminal box wiring, needs to screw up the screw many times, and secondary line and wire contact surface are little moreover, if careless in the operation process has appeared, also can appear virtual phenomenon of connecing, can bring very big puzzlement for user and operating personnel.

Disclosure of Invention

The invention aims to provide a junction box, which reduces the wiring difficulty and the number of screws used by the junction box.

In order to achieve the purpose, the invention adopts the following technical scheme:

a junction box, comprising:

a housing;

a plurality of voltage units, each voltage unit including a voltage inlet terminal, three voltage outlet terminals, and a voltage clamping member disposed within the housing, the voltage clamping members being disposed on the voltage inlet terminal and the voltage outlet terminals, the voltage clamping members having a first clamping state in close contact with the voltage inlet terminal or the voltage outlet terminal and a first wire insertion state spaced from the voltage inlet terminal or the voltage outlet terminal;

a plurality of current cell, two it is equipped with one to press from both sides in the middle of the voltage cell current cell, current cell includes two electric current incoming line terminals, two electric current outgoing line terminals and electric current clamping piece, electric current incoming line terminal with all be provided with on the electric current outgoing line terminal the electric current clamping piece, the electric current clamping piece have with electric current incoming line terminal or the second that electric current outgoing line terminal closely laminated presss from both sides tight state and with electric current incoming line terminal or electric current outgoing line terminal spaced second plug wire state.

Preferably, the housing includes a wire inlet end and a wire outlet end, the voltage unit further includes a voltage wire inlet arranged at the wire inlet end and three voltage wire outlets arranged at the wire outlet end, the voltage wire inlet is internally provided with the voltage wire inlet terminal, and the voltage wire outlet is internally provided with the voltage wire outlet terminal;

the current unit further comprises two current incoming ports arranged at the incoming line ends and two current outgoing ports arranged at the outgoing line ends, the current incoming line terminals are arranged in the current incoming ports, and the current outgoing line terminals are arranged in the current outgoing lines.

Preferably, the current clamping member includes an elastic portion and a clamping portion connected to the elastic portion, and the elastic portion is configured to provide a clamping force to the clamping portion so that the clamping portion can be tightly attached to the current inlet terminal or the current outlet terminal.

Preferably, the elastic part comprises a first mounting plate, a second mounting plate and a bending plate connected with the first mounting plate and the second mounting plate, the first mounting plate is fixedly arranged on the current inlet terminal or the current outlet terminal, and the clamping part is connected with the free end of the second mounting plate.

Preferably, the clamping portion is provided with a sliding groove, the first mounting plate is configured to extend into the sliding groove and slide in the sliding groove, the current clamping element is in the second clamping state, the first mounting plate is tightly attached to the inner upper wall of the sliding groove, and the current clamping element is in the second wire plugging state, and a wire plugging interval is reserved between the first mounting plate and the inner upper wall of the sliding groove.

Preferably, the first mounting plate is of an arc-shaped structure, and the first mounting plate is made of an elastic material.

Preferably, the current unit further includes a short-circuit current connection bar for short-circuiting a current flowing through the current unit.

Preferably, a voltage measuring hole is formed in the housing, and a voltage measuring tool can penetrate into the voltage measuring hole and measure the voltage of the voltage unit.

Preferably, the junction box further comprises an anti-opening cover, the anti-opening cover is arranged on the shell, and the anti-opening cover is used for shielding the voltage measuring hole.

Preferably, the shell is provided with a first mark, a second mark, a third mark and a fourth mark.

The invention has the beneficial effects that:

the voltage unit is in a one-in three-out mode, the current unit is in a two-in two-out mode, the situation of wrong wiring is prevented, the voltage clamping piece is arranged on the voltage inlet wire terminal or the voltage outlet wire terminal, wires connected in or out of the junction box can be clamped through the voltage clamping piece, screws are not needed for fixing, the number of the used screws is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of a housing provided in an embodiment of the junction box of the present invention;

fig. 2 is a schematic structural diagram of a current clamp provided in an embodiment of the junction box of the present invention.

In the figure:

1. a housing; 11. a voltage measuring hole;

2. a voltage unit; 21. a voltage inlet; 22. a voltage outlet;

3. a current unit; 31. a current inlet; 32. a current outlet;

4. a current clamp; 41. an elastic portion; 411. a first mounting plate; 412. a second mounting plate; 42. a clamping portion; 43. and (4) a flow guide strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the embodiments of the present invention, the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a junction box, which relates to the field of power construction, and as shown in fig. 1 and fig. 2, the junction box comprises a shell 1, a plurality of voltage units 2 and a plurality of current units 3, wherein each voltage unit 2 comprises a voltage incoming line terminal, three voltage outgoing line terminals and a voltage clamping piece which are arranged in the shell 1, the voltage incoming line terminals and the voltage outgoing line terminals are both provided with the voltage clamping pieces, and each voltage clamping piece is provided with a first clamping state tightly attached to the voltage incoming line terminal or the voltage outgoing line terminal and a first wire plugging state spaced from the voltage incoming line terminal or the voltage outgoing line terminal; a current unit 3 is clamped between the two voltage units 2, the current unit 3 comprises two current inlet terminals, two current outlet terminals and a current clamping piece 4, the current clamping piece 4 is arranged on each of the current inlet terminals and the current outlet terminals, and the current clamping piece 4 has a second clamping state tightly attached to the current inlet terminals or the current outlet terminals and a second wire plugging state spaced from the current inlet terminals or the current outlet terminals.

The voltage unit 2 of this embodiment is one and advances three play forms, and current unit 3 is two and advances two play forms, so set up the condition that has prevented wrong wiring and has taken place, all be provided with the voltage clamping piece on voltage incoming wire terminal, voltage outgoing line terminal, current incoming wire terminal and the current outgoing line terminal, can press from both sides the wire that the tight terminal box of clamp inserted or connect out through the voltage clamping piece, and also need not use the screw fixation, reduced the use quantity of screw, improved work efficiency.

Particularly, the shell 1 comprises a wire inlet end and a wire outlet end, the voltage unit 2 further comprises a voltage wire inlet 21 arranged at the wire inlet end and three voltage wire outlet 22 arranged at the wire outlet end, a voltage wire inlet terminal is arranged in the voltage wire inlet 21, and a voltage wire outlet terminal is arranged in the voltage wire outlet 22; the current unit 3 further includes two current inlet ports 31 disposed at the inlet ends and two current outlet ports 32 disposed at the outlet ends, wherein a current inlet terminal is disposed in the current inlet port 31, and a current outlet terminal is disposed in the current outlet port 32. The number of the voltage inlet 21 is equal to the number of the voltage inlet terminals, the number of the voltage outlet 22 is equal to the number of the voltage outlet terminals, the number of the current inlet 31 is equal to the number of the current inlet terminals, and the number of the current outlet 32 is equal to the number of the current outlet terminals.

In particular, the current cell 3 further comprises a shorting current connection strip for shorting the current flowing through the current cell 3. Set up short circuit current connection strip, need not the short circuit even piece when changing metering device in order to change, avoid the secondary of taking load current transformer to open a way, prevent that the staff from touching electrified body by mistake. The position of the shell 1 corresponding to the current unit 3 is provided with a jack, so that a short-circuit current connecting strip can be conveniently inserted.

In particular, as shown in fig. 1, a voltage measuring hole 11 is provided on the housing 1, and a voltage measuring tool can go deep into the voltage measuring hole 11 and measure the voltage of the voltage unit 2. The voltage measuring hole 11 is arranged, so that the constructor can measure the voltage of the voltage unit 2 conveniently.

In particular, the junction box further includes an opening prevention cover provided on the case 1 for shielding the voltage measuring hole 11. The cover is prevented from being opened, so that the voltage measuring hole 11 is shielded, the touch of a person is prevented, and electricity stealing by an electricity thief is prevented from being illegally connected. Meanwhile, the anti-uncovering cover also has a dustproof effect.

In particular, the housing 1 is provided with a first mark, a second mark, a third mark and a fourth mark. Set up four phase place signs, divide into four regions with casing 1, be three phase place wiring area and a ground connection region respectively, make constructor can distinguish the wiring area at a glance, not only prevent to connect wrong wire, still improved wiring efficiency.

Specifically, as shown in fig. 2, current clamp 4 includes an elastic portion 41 and a clamping portion 42 connected to elastic portion 41, and elastic portion 41 is configured to provide clamping force to clamping portion 42 to make it fit closely to a current inlet terminal or a current outlet terminal. The elastic part 41 provides clamping force so that the clamping part 42 clamps the wires connected in or out of the junction box, and the structure is convenient and the disassembly and the assembly are convenient. In the present embodiment, the current clamping member 4 and the voltage clamping member have the same structure, and in other embodiments, the current clamping member 4 and the voltage clamping member have different structures as long as the clamping of the wires can be ensured.

Specifically, as shown in fig. 2, the elastic portion 41 includes a first mounting plate 411, a second mounting plate 412, and a bending plate connecting the first mounting plate 411 and the second mounting plate 412, the first mounting plate 411 is fixedly disposed on a current inlet terminal or a current outlet terminal, and the clamping portion 42 is connected to a free end of the second mounting plate 412. The free end of the second mounting plate 412 is connected to the clamping portion 42, so that the clamping portion 42 is connected to the elastic portion 41, and the elastic portion 41 can provide clamping force for the clamping portion 42 conveniently.

Specifically, as shown in fig. 2, a sliding groove is formed in the clamping portion 42, the first mounting plate 411 is configured to extend into the sliding groove and be capable of sliding in the sliding groove, when the current clamping member 4 is in the second clamping state, the first mounting plate 411 is closely attached to the inner upper wall of the sliding groove, and when the current clamping member 4 is in the second wire insertion state, a wire insertion space is formed between the first mounting plate 411 and the inner upper wall of the sliding groove. When the current clamping member 4 is in the second wire plugging state, the wire is inserted into the sliding slot, the first mounting plate 411 is pushed to slide upwards along the sliding slot, and the first mounting plate 411 abuts against the inner upper wall of the sliding slot, so that the clamping portion 42 clamps the wire. The clamping part 42 is adopted to clamp the lead, and the lead body cannot be damaged.

Specifically, the first mounting plate 411 has an arc-shaped structure, and the first mounting plate 411 is made of an elastic material. Set up first mounting panel 411 to the arc structure and adopt elastic material to make, make things convenient for first mounting panel 411 to slide along the spout.

Preferably, as shown in fig. 2, the current clamping member 4 further includes a current guiding strip 43, the current guiding strip 43 is disposed between the two current clamping members 4, and two ends of the current guiding strip 43 respectively penetrate through the sliding grooves of the two clamping portions 42 and abut against the first mounting plate. The wire is inserted into the gap between the guide strip 43 and the chute. The guide strips 43 are brass nickel-plated guide strips 43, and the brass nickel-plated guide strips 43 not only enhance the conductivity, but also have low price and reduce the cost.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A junction box, comprising:

a housing (1);

a plurality of voltage units (2), wherein each voltage unit (2) comprises a voltage inlet terminal, three voltage outlet terminals and a voltage clamping piece which are arranged in the shell (1), the voltage inlet terminals and the voltage outlet terminals are respectively provided with the voltage clamping pieces, and the voltage clamping pieces have a first clamping state closely attached to the voltage inlet terminals or the voltage outlet terminals and a first wire plugging state spaced from the voltage inlet terminals or the voltage outlet terminals;

a plurality of current cell (3), two it is equipped with one to press from both sides in the middle of voltage cell (2) current cell (3), current cell (3) include two electric current incoming line terminals, two electric current outgoing line terminals and electric current clamping piece (4), electric current incoming line terminal with all be provided with on the electric current outgoing line terminal electric current clamping piece (4), electric current clamping piece (4) have with electric current incoming line terminal or the second that electric current outgoing line terminal closely laminated presss from both sides tight state and with electric current incoming line terminal or the second plug wire state of electric current outgoing line terminal interval.

2. The terminal box according to claim 1, characterized in that the housing (1) comprises an incoming line end and an outgoing line end, the voltage unit (2) further comprises a voltage incoming line port (21) provided at the incoming line end and three voltage outgoing line ports (22) provided at the outgoing line end, the voltage incoming line terminal is provided in the voltage incoming line port (21), the voltage outgoing line terminal is provided in the voltage outgoing line port (22);

the current unit (3) further comprises two current incoming ports (31) arranged at the incoming line ends and two current outgoing ports (32) arranged at the outgoing line ends, wherein the current incoming line terminals are arranged in the current incoming ports (31), and the current outgoing line terminals are arranged in the current outgoing line ports (32).

3. Junction box according to claim 1, characterised in that the current clamp (4) comprises a resilient part (41) and a clamping part (42) connected to the resilient part (41), the resilient part (41) being adapted to provide the clamping part (42) with a clamping force against the current inlet terminal or the current outlet terminal.

4. The junction box according to claim 3, characterized in that said elastic portion (41) comprises a first mounting plate (411), a second mounting plate (412) and a bent plate connecting said first mounting plate (411) and said second mounting plate (412), said first mounting plate (411) being fixedly arranged on said current inlet terminal or said current outlet terminal, said clamping portion (42) being connected to a free end of said second mounting plate (412).

5. The junction box of claim 4, wherein the clamping portion (42) is provided with a sliding slot, the first mounting plate (411) is configured to extend into the sliding slot and slide in the sliding slot, when the current clamping member (4) is in the second clamping state, the first mounting plate (411) is closely attached to the inner upper wall of the sliding slot, and when the current clamping member (4) is in the second wire plugging state, a wire plugging interval exists between the first mounting plate (411) and the inner upper wall of the sliding slot.

6. The junction box according to claim 4, characterized in that said first mounting plate (411) is of an arc-shaped configuration, said first mounting plate (411) being made of an elastic material.

7. Junction box according to claim 1, characterized in that the current cell (3) further comprises a shorting current connection bar for shorting the current flowing through the current cell (3).

8. Junction box according to claim 1, characterized in that a voltage measuring hole (11) is provided on the housing (1), a voltage measuring tool being able to reach deep into the voltage measuring hole (11) and measure the voltage of the voltage unit (2).

9. The junction box according to claim 8, further comprising an anti-opening cover provided on the housing (1) for covering the voltage measuring hole (11).

10. Junction box according to claim 1, characterized in that a first, a second, a third and a fourth marking are provided on the housing (1).