Plug piece capable of replacing electric energy meter without power cut

Abstract

The utility model relates to a pluggable piece capable of replacing an electric energy meter without power cut, and belongs to the technical field of electric energy meter accessories. Comprising a plugging piece body, two wiring terminal sets are symmetrically installed on the front face of the plugging piece, assembling grooves are formed in the positions, corresponding to the lower ends of the wiring terminal sets, of the plugging piece body, openings are formed in the positions, corresponding to the assembling grooves, of the back face of the plugging piece body, and a rear cover is detachably installed on the openings. A short-circuit assembly is arranged at the position, corresponding to the wiring terminal set, of the rear cover, a pressing piece is arranged above the short-circuit assembly, an open groove is formed in the portion, corresponding to the pressing piece, of the plugging piece body, and the other end of the pressing piece makes contact with the short-circuit assembly. The pressing rod of the plugging piece occupies a small installation space between the wiring terminal groups, the stability of the overall structure of the plugging piece is effectively improved, the profiling arc grooves of the short-circuit pieces are in contact connection with the outer circles of the wiring terminal groups, the contact area of the short-circuit pieces and the wiring terminal groups is effectively increased, and the service life of the short-circuit pieces is prolonged. And the occurrence of power failure caused by poor contact between the short-circuit sheet and the wiring terminal group is reduced.

Description

Technical Field

[0001] The utility model relates to a plug-in component of an electric energy meter that can be replaced without power outage, belonging to the technical field of electric energy meter accessories. Background Art

[0002] The electric energy meter is an instrument used to measure electric energy. The electric energy meter is fixedly installed inside the meter box through a plug-in component. The electric energy meter needs to be replaced or repaired after a certain period of use. Replacement or repair requires the electric energy meter to be removed from the plug-in component. When removing the electric energy meter, it is often necessary to cut off the power supply to the user before carrying out the disassembly operation. After the electric energy meter is replaced or repaired, the power supply to the user is restored. Nowadays, the demand for domestic electricity is huge. Many users have electrical equipment that runs 24 hours a day, which is not suitable for sudden power outages and can easily cause damage to the user's electrical equipment.

[0003] In order to facilitate the replacement of electric meters without power outage, a Chinese patent with patent announcement number CN215116450U discloses a push-type plug connector that can replace electric meters without power outage, including a plug connector body and a short-circuit structure, a cover plate and a wiring assembly arranged on the plug connector body. The short-circuit structure and the wiring assembly are located in the plug connector body, and the cover plate is used to isolate the wiring assembly from the short-circuit structure. The short-circuit structure includes a shorting piece, a torsion rod and a reset spring. During use, when the electric energy meter is installed in the wiring assembly, the electric energy meter presses down the pressing end of the torsion rod to drive the control end of the torsion rod to swing, thereby contacting the shorting piece through the control end, causing the shorting piece to detach from the wiring assembly. When the electric energy meter detaches from the wiring assembly, the elastic force of the reset spring pushes the contact block of the shorting piece to contact the wiring assembly to achieve short-circuiting of the wiring assembly, thereby achieving power outage replacement of the electric energy meter. Although the push-type connector can achieve power outage replacement after the wiring assembly is short-circuited, the short-circuit structure of the push-type connector is relatively complicated. The torsion rod of the short-circuit structure occupies more structural space of the plug-in components between the wiring assemblies, which directly affects the stability of the overall structure of the plug-in components between the wiring assemblies. Secondly, the contact block of the short-circuit piece in the short-circuit structure is cylindrical, and the contact area between the end face of the contact block and the arc-shaped wiring assembly is small, which is prone to poor contact and power outages. Therefore, it is necessary to improve it. Summary of the invention

[0004] The purpose of the utility model is to provide a plug-in component that can realize the replacement of an electric energy meter without power outage on a plug-in component, while ensuring the stability of the plug-in component structure, so as to reduce the problem of power outage caused by poor contact of a short-circuit piece in the plug-in component.

[0005] The technical solution of the utility model is:

[0006] A plug-in component for replacing an electric energy meter without power outage comprises a plug-in component body, characterized in that two terminal groups are symmetrically mounted on the front of the plug-in component, each terminal group comprises a live wire terminal and a neutral wire terminal, an assembly slot is arranged in the plug-in component body corresponding to the lower end of the terminal group, one end of the terminal group extends into the assembly slot, an opening is arranged at a position corresponding to the assembly slot on the back of the plug-in component body, a rear cover is detachably mounted on the opening, a short-circuit assembly is arranged at a position corresponding to the terminal group on the rear cover, the short-circuit assembly extends into the assembly slot, a pressing piece is arranged above the short-circuit assembly, the pressing piece is fixedly mounted on the inner wall of the assembly slot, a slot is arranged on the plug-in component body corresponding to the pressing piece, one end of the pressing piece extends to the outside of the slot, the pressing piece extending to the outside of the slot corresponds to the terminal group, and the other end of the pressing piece contacts the short-circuit assembly.

[0007] The short-circuit assembly comprises a base, a base rod and a short-circuit piece. The base is provided with a slide groove, in which the base rod is movably mounted. A short-circuit piece is fixedly mounted at one end of the base rod, and a reset spring is mounted on the base rod between the short-circuit piece and the base.

[0008] The cross section of the slide groove of the base is rectangular, the cross section of the base rod is rectangular, and the base rod and the slide groove are matched and limitedly slidably connected.

[0009] The shorting piece is in the shape of a long strip, and both ends of the shorting piece are respectively provided with contoured arc grooves corresponding to the live wire terminal or the neutral wire terminal, and a force-bearing inclined surface is provided on the shorting piece between the two contoured arc grooves.

[0010] The pressing part includes an upper cover, a cylinder and a pressure rod. The cylinder is fixedly installed at the bottom end of the upper cover. The cylinder is a long rectangular body. A variable diameter installation groove is opened in the cylinder. A pressure rod is movably installed in the installation groove. One end of the pressure rod extends to the outside of the upper cover, and the other end of the pressure rod extends to the outside of the cylinder. A flange is arranged on the pressure rod, and the flange is in contact with the upper cover.

[0011] The end of the pressure rod extending to the outside of the cylinder is provided with a push inclined surface, and the push inclined surface is in contact with and connected to the force-bearing inclined surface.

[0012] The beneficial effects of the utility model compared with the prior art are:

[0013] The plug-in component of the non-stop replaceable electric energy meter cooperates with the upper cover, cylinder and pressure rod of the pressing component through the base, base rod and short-circuit piece of the short-circuit assembly. When the electric energy meter is removed from the terminal group, the downward pressure on the pressure rod is released during the upward movement of the electric energy meter. Under the elastic force of the reset spring, the short-circuit piece cooperates with the push inclined surface and the force inclined surface to push the pressure rod upward. When the pressure rod moves upward, the short-circuit piece moves forward, and the contoured arc groove of the short-circuit piece contacts the terminal group, so that the live wire terminal and the neutral wire terminal are connected. The short-circuit piece is short-circuited. When the electric energy meter is installed, the electric energy meter presses down the pressure rod, and the pressure rod pushes the short-circuit piece to disengage from the terminal group, and the short-circuit piece is disconnected, thereby realizing the replacement of the meter without power outage; the pressure rod of the plug-in component occupies less installation space between the terminal groups, effectively increasing the stability of the overall structure of the plug-in component, and the contoured arc groove of the short-circuit piece is in contact with the outer circle of the terminal group, effectively increasing the contact area between the short-circuit piece and the terminal group, reducing the occurrence of power outages due to poor contact between the short-circuit piece and the terminal group. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0016] Figure 3 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the short-circuit assembly and the pressing piece in the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the rear cover and the short-circuit assembly in the utility model;

[0019] Figure 6 It is a schematic cross-sectional structural diagram of the shorting piece and the pressing member in the utility model when the shorting piece is in a non-shorting working state;

[0020] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of the shorting piece and the pressing piece in the shorting working state.

[0021] In the figure: 1. plug-in body; 2. live wire terminal; 3. neutral wire terminal; 4. assembly groove; 5. rear cover; 6. base; 7. base rod; 8. short-circuit; 9. contoured arc groove; 10. force-bearing inclined surface; 11. reset spring; 12. upper cover; 13. cylinder; 14. pressure rod; 15. installation groove; 16. flange; 17. push inclined surface. DETAILED DESCRIPTION

[0022] As attached Figure 1-7 Shown

[0023] The plug-in component of the non-power-off replaceable electric energy meter comprises a plug-in component body 1, and two terminal groups are symmetrically inserted on the front of the plug-in component, and each terminal group comprises a live wire terminal 2 and a neutral wire terminal 3 respectively.

[0024] An assembly groove 4 is provided in the plug body 1 corresponding to the lower end of the wiring terminal group, and one end of the wiring terminal group extends into the assembly groove 4 .

[0025] An opening is provided on the back of the plug body 1 at a position corresponding to the assembly groove 4, and a rear cover 5 is fixedly mounted on the opening by bolts.

[0026] A short-circuit assembly is installed on the rear cover 5 at a position corresponding to the terminal group. The short-circuit assembly includes a base 6, a base rod 7 and a short-circuit piece 8. One end of the base 6 is fixedly installed on the rear cover 5. The base 6 is a long rectangular body. A slide groove is provided on the end surface of the other end of the base 6. The cross-section of the slide groove of the base 6 is rectangular. A base rod 7 is movablely mounted in the slide groove. The cross-section of the base rod 7 is rectangular. The purpose of such a setting is that the base rod 7 and the slide groove can slide in the axial direction, and the slide groove can limit the base rod 7 in the circumferential direction.

[0027] One end of the base rod 7 extends to the outside of the slide groove of the base 6, and a short-circuit piece 8 is fixedly installed on the end of the base rod 7 extending to the outside of the slide groove. The short-circuit piece 8 is in the shape of a long strip, and both ends of the short-circuit piece 8 are respectively provided with a contoured arc groove 9 corresponding to the live wire terminal 2 or the neutral wire terminal 3. The inner wall of the contoured arc groove 9 is in contact with the outer circle of the live wire terminal 2 or the neutral wire terminal 3. The purpose of such arrangement is to effectively increase the contact area between the short-circuit piece 8 and the live wire terminal 2 or the neutral wire terminal 3, and reduce the occurrence of poor contact between the short-circuit piece 8 and the terminal.

[0028] A force-bearing inclined surface 10 is provided on the short-circuit piece 8 between the two contoured arc grooves 9 , the short-circuit assembly extends into the assembly groove 4 , and a return spring 11 is sleeved on the base rod 7 between the short-circuit piece 8 and the base 6 .

[0029] A pressing piece is arranged above the short-circuit assembly, and the pressing piece includes an upper cover 12, a cylinder 13 and a pressure rod 14. The upper cover 12 of the pressing piece is fixedly mounted on the top inner wall of the assembly groove 4, and the cylinder 13 is fixedly mounted on the lower end of the upper cover 12 by bolts. The cylinder 13 is a long rectangular body, and a variable diameter mounting groove 15 is opened in the cylinder 13. A pressure rod 14 is movably installed in the mounting groove 15. The pressure rod 14 is a long rectangular body, and one end of the pressure rod 14 extends to the outside of the upper cover 12. A slot is opened on the plug-in component body 1 corresponding to the pressure rod 14 of the pressing piece, and the pressure rod 14 extending to the outside of the upper cover 12 passes through the slot, so as to facilitate the contact between the pressure rod 14 and the electric energy meter, and the pressure rod 14 passing through the slot is arranged corresponding to the terminal group.

[0030] A flange 16 is provided on the pressure rod 14 in the cylinder 13 , and the flange 16 is in contact with and connected to the upper cover 12 .

[0031] The other end of the pressure rod 14 extends to the outside of the cylinder 13. A push slope 17 is provided on the end of the pressure rod 14 extending to the outside of the cylinder 13. The push slope 17 is in contact with the force-bearing slope 10. When in use, the push slope 17 and the force-bearing slope 10 cooperate with each other to slide.

[0032] When the plug-in component replaces the electric energy meter without power outage, the staff first moves the electric energy meter upward along the terminal group. In the process of the electric energy meter moving upward along the terminal group, the electric energy meter gradually releases the pressure on the pressure rod 14. When the pressure rod 14 is released, under the elastic force of the reset spring 11, the short-circuit piece 8 moves forward in the axial direction of the base rod 7, and the force-bearing inclined surface 10 of the short-circuit piece 8 cooperates with the push inclined surface 17 of the pressure rod 14, so as to lift the pressure rod 14 upward, and the pressure rod 14 moves upward from the slot of the plug-in component body 1. At this time, when the short-circuit piece 8 moves forward in the axial direction of the base rod 7, the two contoured arc grooves 9 of the short-circuit piece 8 gradually reduce the distance between the live wire terminal 2 and the neutral wire terminal 3 respectively, until the flange 16 of the pressure rod 14 contacts the upper cover 12, and the upper cover 12 gives a limit to the pressure rod 14 through the flange 16. At this time, the electric energy meter is out of contact with the pressure rod 14, and the two contoured arc grooves 9 of the short-circuit piece 8 are respectively It is in contact with the outer circle of the live wire terminal 2 and the neutral wire terminal 3, so as to realize the short circuit of the live wire terminal 2 and the neutral wire terminal 3. After the short circuit of the live wire terminal 2 and the neutral wire terminal 3 is completed, the electric energy meter continues to be moved upward until the electric energy meter is completely detached from the terminal group, thereby the operation of replacing the electric energy meter can be performed. When the electric energy meter is reinstalled on the terminal group, the staff moves the electric energy meter downward along the axial direction of the terminal group. After the electric energy meter contacts the pressure rod 14, the electric energy meter drives the pressure rod 14 to move downward, and the short circuit piece 8 retreats through the force-bearing inclined surface 10 of the short circuit piece 8 and the push inclined surface 17 of the pressure rod 14 through the cooperation. The two contoured arc grooves 9 of the short circuit piece 8 are respectively detached from the live wire terminal 2 and the neutral wire terminal 3. During the entire short circuit or disconnection process of the short circuit piece 8, the force-bearing inclined surface 10 of the short circuit piece 8 and the push inclined surface 17 of the pressure rod 14 always maintain contact and connection. The pressure rod 14 of the plug-in component occupies less installation space between the terminal groups, effectively increasing the stability of the overall structure of the plug-in component; the contoured arc groove 9 of the short-circuit piece 8 is in contact and connected with the outer circle of the terminal group, effectively increasing the contact area between the short-circuit piece 8 and the terminal group, and reducing the occurrence of power outages due to poor contact between the short-circuit piece 8 and the terminal group.

Claims

1. A plug-in component for replacing an electric energy meter without power outage, comprising a plug-in component body (1), characterized in that: Two terminal blocks are symmetrically mounted on the front of the plug-in component, each terminal block comprising a live wire terminal block (2) and a neutral wire terminal block (3). An assembly slot (4) is arranged in the plug-in component body (1) corresponding to the lower end of the terminal block, one end of the terminal block extends into the assembly slot (4), an opening is arranged on the back of the plug-in component body (1) at a position corresponding to the assembly slot (4), a rear cover (5) is detachably mounted on the opening, a short-circuit assembly is mounted on the rear cover (5) at a position corresponding to the terminal block, the short-circuit assembly extends into the assembly slot (4), a pressing piece is arranged above the short-circuit assembly, the pressing piece is fixedly mounted on the inner wall of the assembly slot (4), a slot is arranged on the plug-in component body (1) corresponding to the pressing piece, one end of the pressing piece extends to the outside of the slot, the pressing piece extending to the outside of the slot corresponds to the terminal block, and the other end of the pressing piece contacts the short-circuit assembly.

2. The plug-in component of the non-stop replaceable electric energy meter according to claim 1, characterized in that: The short-circuit assembly comprises a base (6), a base rod (7) and a short-circuit piece (8). The base (6) is provided with a slide groove, in which the base rod (7) is movably mounted. The short-circuit piece (8) is fixedly mounted at one end of the base rod (7), and a return spring (11) is mounted on the base rod (7) between the short-circuit piece (8) and the base (6).

3. The plug-in component of the non-power-off replaceable electric energy meter according to claim 2, characterized in that: The cross section of the slide groove of the base (6) is rectangular, the cross section of the base rod (7) is rectangular, and the base rod (7) is connected to the slide groove in a limited sliding manner.

4. The plug-in component of the non-power-off replaceable electric energy meter according to claim 2, characterized in that: The shorting piece (8) is in the shape of a long strip, and two ends of the shorting piece (8) are respectively provided with contoured arc grooves (9) corresponding to the live wire terminal (2) or the neutral wire terminal (3), and a force-bearing inclined surface (10) is provided on the shorting piece (8) between the two contoured arc grooves (9).

5. The plug-in component of the non-stop replaceable electric energy meter according to claim 1, characterized in that: The pressing member comprises an upper cover (12), a cylinder (13) and a pressing rod (14); the cylinder (13) is fixedly mounted on the bottom end of the upper cover (12); the cylinder (13) is a long rectangular body; a mounting groove (15) with a variable diameter is provided in the cylinder (13); a pressing rod (14) is movably mounted in the mounting groove (15); one end of the pressing rod (14) extends to the outside of the upper cover (12); the other end of the pressing rod (14) extends to the outside of the cylinder (13); a flange (16) is provided on the pressing rod (14); and the flange (16) is in contact with and connected to the upper cover (12).

6. The plug-in component of the non-stop replaceable electric energy meter according to claim 5, characterized in that: A push inclined surface (17) is provided on the end of the pressure rod (14) extending to the outside of the cylinder (13), and the push inclined surface (17) is in contact with and connected to the force-bearing inclined surface (10).

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