Search

CN-224231842-U - Three-phase electric energy meter junction box with stable installation

CN224231842UCN 224231842 UCN224231842 UCN 224231842UCN-224231842-U

Abstract

The application discloses a junction box for a three-phase electric energy meter, which comprises a junction box body and an upper cover arranged on the junction box body, wherein a junction terminal connected with a live wire or a zero wire is arranged in the junction box body, the junction box also comprises a junction lug, the bottom of the upper cover is provided with a mounting groove for fixing the junction lug, the junction lug comprises a connecting end and a junction terminal, a wire is fixed on the junction end in advance, a wire fixing groove is further formed in the upper cover, one side of the wire fixing groove is communicated with the mounting groove, the other side of the wire fixing groove penetrates through the top of the upper cover, the junction terminal is inserted into the wire fixing groove along the slotting direction of the wire fixing groove, the connecting end is inserted into the mounting groove along the slotting direction of the mounting groove and is connected with the upper cover, the wire is fixed on one side of the junction terminal, an operator can press the junction lug at the same time, the connection stability between the wire and the junction terminal is not affected, and the inconvenience of wire connection operation after the upper cover and the junction box body are assembled is avoided.

Inventors

  • GAO XIAOYONG
  • GAO HUAIYU

Assignees

  • 乐清市长佳仪器仪表有限公司

Dates

Publication Date
20260512
Application Date
20250427

Claims (10)

  1. 1. The utility model provides an install stable three-phase electric energy meter terminal box, includes terminal box body (1) and installs upper cover (2) on terminal box body (1), install binding post (12) that are connected with live wire or zero line in terminal box body (1), a serial communication port, still include lug (4), the bottom of upper cover (2) is provided with mounting groove (22) that are used for fixed lug (4), lug (4) include link (41) and wiring end (42), be fixed with the wire in advance on wiring end (42), still open solid wire groove (23) in upper cover (2), one side and mounting groove (22) of solid wire groove (23) are linked together, and the opposite side of solid wire groove (23) runs through the top of upper cover (2), wiring end (42) insert in solid wire groove (23) along the fluting direction of solid wire groove (22), link (41) insert in mounting groove (22) along the fluting direction of mounting groove (22) to be connected with upper cover (2).
  2. 2. The junction box for the three-phase electric energy meter with stable installation according to claim 1, wherein the groove walls of the wire fixing grooves (23) are close to the junction of the wires and the wiring terminal (42).
  3. 3. The three-phase electric energy meter junction box with stable installation according to claim 1, wherein the wiring terminal (42) and the lead wire are fixedly welded, a heat insulation opening (413) is arranged at the joint of the connecting end (41) and the wiring terminal (42), a heat insulation hole (412) penetrating through the connecting end (41) is formed, and the heat insulation hole (412) is located on one side close to the heat insulation opening (413).
  4. 4. A three-phase electric energy meter junction box with stable installation according to claim 3, characterized in that the number of the heat insulation openings (413) is two, the two heat insulation openings (413) are respectively positioned at two sides of the terminal (42), and the opening shapes of the two heat insulation openings (413) are different.
  5. 5. A three-phase electric energy meter junction box with stable installation according to claim 3, characterized in that a threaded hole (411) for fixing the connecting end (41) is formed on one side of the connecting end (41) far away from the terminal (42), and the axis projection of the threaded hole (411) and the axis projection of the heat insulation hole (412) are not overlapped along the direction of inserting the connecting piece (4) into the installation groove (22).
  6. 6. The junction box for the three-phase electric energy meter, which is stable to install, according to claim 1, is characterized in that a junction cavity (3) is formed by enclosing between the junction box body (1) and the upper cover (2), a yielding port (24) is arranged on one side, facing the junction cavity (3), of the top of the upper cover (2), one side of the yielding port (24) is communicated with the junction cavity (3), and the other side of the yielding port (24) is communicated with the wire fixing groove (23).
  7. 7. The three-phase electric energy meter junction box of claim 1, wherein a connecting piece (21) is arranged at the bottom of the upper cover (2), a notch (211) is arranged at one end of the connecting piece (21), a fixing hole (212) is arranged at one end, far away from the notch (211), of the connecting piece (21), a first fastening bolt (213) and a second fastening bolt (214) are further arranged at the bottom of the upper cover (2), the first fastening bolt (213) sequentially penetrates through the notch (211) and the upper cover (2) and is in threaded connection with the junction box body (1) and the junction terminal (12) respectively, and the second fastening bolt (214) sequentially penetrates through the fixing hole (212) and the threaded hole (411) and is in threaded connection with the upper cover (2).
  8. 8. The three-phase electric energy meter junction box with stable installation according to claim 7, characterized in that the notch (211) is provided as a half-waist hole (2111).
  9. 9. The stable-installation three-phase electric energy meter junction box according to claim 7, characterized in that the fixing hole (212) is provided as a kidney-shaped hole (2121).
  10. 10. The three-phase electric energy meter junction box with stable installation according to claim 1, wherein a waterproof groove (15) is arranged on one side of the junction box body (1) facing the upper cover (2), and a waterproof strip (28) embedded in the waterproof groove (15) is fixed on one side of the upper cover (2) facing the junction box body (1).

Description

Three-phase electric energy meter junction box with stable installation Technical Field The application relates to the technical field of electric energy meter junction boxes, in particular to a three-phase electric energy meter junction box with stable installation. Background The electric energy meter junction box is used as an important component in the electric power metering equipment, and the main function of the electric energy meter junction box is to realize stable connection of the electric energy meter and an external circuit, and along with development of an electric power system and diversification of electricity demand, higher requirements are provided for installation stability, wiring convenience and structural reliability of the junction box. As shown in fig. 1, an electric energy meter junction box in the prior art generally includes a junction box body 1 and an upper cover 2 fixed on the junction box body, a junction terminal 11 for connecting a live wire and a null wire is arranged in the junction box body 1, after the upper cover 2 is fixedly connected with the junction box body 1, a junction cavity 3 is formed by mutually enclosing between the top of the upper cover 2 and the top of the junction box body 1, a wire fixing groove 12 is arranged on one side of the junction box body 1 positioned in the junction cavity 3, a wire connecting lug 4 is arranged in the wire fixing groove 12, the wire connecting lug 4 comprises a terminal 42 and a connecting end 41, the connecting end 41 of the wire connecting lug 4 is embedded in the wire fixing groove 12, the terminal 42 of the wire connecting lug 4 is used for being connected with a wire, and the wire is used for being connected with a circuit board in the electric energy meter. However, in the actual installation process of the lug 4, if an operator fixes the wire on the wire terminal 42 in advance, then the operator needs to hold the wire terminal 42 to enable the connection end 41 to be embedded into the wire fixing groove 12, and the operator needs to press the wire terminal 42 into the wire fixing groove 12, when the wire terminal 42 of the lug 4 is pressed, the operator is easy to press the connection part of the wire and the lug 4, which easily results in the risk that the connection part of the wire and the wire terminal 42 is damaged due to the installation of the lug 4, if the operator firstly embeds the connection end 41 of the lug 4 into the wire fixing groove 2 and then connects the wire terminal 42 with the wire, the lug 4 is located in the wire fixing groove 3 due to the small size of the lug 4, which is inconvenient for the operator to wire, and construction difficulty and time cost are increased. Disclosure of Invention The three-phase electric energy meter junction box is stable in installation, and is convenient to connect wires in the three-phase electric energy meter junction box. The above-mentioned application purpose of the application is realized through the following technical scheme: The utility model provides an install stable three-phase electric energy meter terminal box, includes terminal box body and installs the upper cover on the terminal box body, this internally mounted of terminal box has the binding post that is connected with live wire or zero line, still includes the lug, the bottom of upper cover is provided with the mounting groove that is used for fixed lug, the lug includes link and wiring end, be fixed with the wire on the terminal in advance, still open the solid wire casing in the upper cover, one side and the mounting groove of solid wire casing are linked together, and the opposite side of solid wire casing runs through the top of upper cover, the wiring end inserts in the solid wire casing along the fluting direction of solid wire casing, the link inserts in the mounting groove along the fluting direction of mounting groove to be connected with the upper cover. Through adopting above-mentioned technical scheme, set up the lug in the upper cover, operating personnel fixes the wire on the terminal of lug in advance, insert the wiring end in the wire fixing groove again, the wire on the terminal passes through mounting groove and wire fixing groove in proper order, and finally the top of upper cover wears out, the link inserts and fixes in the mounting groove, because the wire is fixed on one side of wiring end, and then operating personnel can press the link installation lug, can not influence the stability of being connected between wire and the wiring end, the inconvenience that the preceding embedding link of having avoided in the traditional mode and connecting wire again brought has also reduced the risk of damaging wire junction because of pressing the wiring end, the installation degree of difficulty and time cost have been reduced, make three-phase electric energy meter terminal box internal connection more stable, it is convenient. Optionally, the groove walls of the wire fixing grooves