A large-current built-in switch and a single-phase electric energy meter

Abstract

The utility model discloses a kind of large current built-in switch and single-phase electric energy meter, it is related to single-phase electric energy meter technical field, including meter buckle assembly, including fuse cover, and the electric energy cover of another side being set to the end of fuse cover;Fuse assembly, including terminal, the fuse wire row of elasticity being connected in the bottom of terminal, and the sub-wire being set to one side of terminal.The beneficial effect of the utility model is through the closure mechanism of special double pressing plate, mandatory requirement operator first closes electric energy cover, can close fuse cover, so that operator will not occur misoperation, avoid live work.In addition in the automatic starting function of electric push rod, it is ensured that in emergency, electric energy meter can respond quickly, realize self-protection, effectively avoid the safety accident possibly caused by circuit overload.

Description

Technical Field

[0001] This utility model relates to the field of single-phase energy meter technology, and in particular to a high-current built-in switch and a single-phase energy meter. Background Technology

[0002] An electricity meter is a critical power metering device used to measure, monitor, and record the electrical energy consumption in a circuit. In particular, high-power electricity meters are often integrated into electrical switching equipment (such as circuit breakers and contactors) to enable real-time monitoring of circuit power usage. These meters not only provide accurate electricity metering data but also support users in effective energy management, monitoring circuit load status, and improving energy efficiency.

[0003] However, most electricity meters currently lack built-in protection against electric shock. This means that strict additional safety measures must be implemented when operating and maintaining these devices to avoid potential electrical accidents. This is especially true for high-power electricity meters embedded in high-voltage circuits, as they are directly connected to high-voltage power sources that could cause serious injury; ensuring safety during installation and maintenance is paramount. Any improper operation could lead to severe electric shock accidents, threatening the lives of operators. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0005] The purpose of this invention is to provide a high-current built-in switch, which aims to solve the problem of accidental short circuits caused by operators accidentally touching the switch during operation of existing electricity meters.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-current built-in switch, which includes a snap-fit ​​assembly, a safety cover, and an energy cover disposed on the other side of the end of the safety cover; The fuse assembly includes a terminal block, a fuse cable strip resiliently connected to the bottom of the terminal block, and a sub-wire disposed on one side of the terminal block.

[0007] As a preferred embodiment of the high-current built-in switch of this utility model, the power cover covers the safety cover; The power cover includes a stud disposed on one side thereon.

[0008] As a preferred embodiment of the high-current built-in switch of this utility model, the safety cover includes an L-shaped cover plate, buckles disposed on both sides of the L-shaped cover plate, and buckle arms disposed on the side wall of the L-shaped cover plate.

[0009] As a preferred embodiment of the high-current built-in switch of this utility model, the L-shaped cover plate includes a hinge hole disposed at its end and a hinge shaft disposed outside the hinge hole, and the hinge hole is hinged in the hinge shaft by a torsion spring.

[0010] As a preferred embodiment of the high-current built-in switch of this utility model, the wiring terminal includes pressing sections disposed on both sides thereof; After the buckle arm is closed, it is pressed against the end face of the pressing section.

[0011] As a preferred embodiment of the high-current built-in switch of this utility model, the terminal block further includes multiple sets of wiring holes, a fixing member disposed at the end of each set of wiring holes, a spring piece disposed inside the wiring hole, and a docking assembly disposed at the bottom of the wiring hole.

[0012] As a preferred embodiment of the high-current built-in switch of this utility model, the docking assembly includes a metal sheet disposed at the bottom of the wiring hole, an extension plate disposed at the bottom of the metal sheet, and a contact cap disposed at the bottom of the extension plate.

[0013] As a preferred embodiment of the high-current built-in switch of this utility model, the fuse bar includes a mating groove that mates with the contact cap, and a downward inclined groove disposed on one side of the fuse bar.

[0014] As a preferred embodiment of the high-current built-in switch of this utility model, the wiring terminal further includes an upper inclined groove that cooperates with the lower inclined groove; It also includes springs disposed inside the upper inclined groove and the lower inclined groove.

[0015] The beneficial effects of this invention are as follows: The special double-plate closing mechanism forces the operator to close the power cover before closing the safety cover, thus preventing accidental operation and avoiding working with live circuits. Simultaneously, this design simplifies and speeds up the maintenance process, eliminating the need for manual disconnection of circuits, significantly improving work efficiency.

[0016] The following technical solution is also provided: a single-phase energy meter, including a meter body, including a base box, two sets of electric push rods disposed on both sides of the inner side of the base box, and a display screen disposed on the inner side of the base box.

[0017] The beneficial effects of this utility model are as follows: the automatic start function of the electric actuator ensures that the energy meter can respond quickly and achieve self-protection in emergency situations. Therefore, the single-phase energy meter has an automatic power-off protection function, which effectively avoids safety accidents that may be caused by circuit overload and further improves the safety performance of the energy meter. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional view of the high-current built-in switch and single-phase energy meter in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the high-current built-in switch and single-phase energy meter after opening in this utility model.

[0021] Figure 3 for Figure 1 Enlarged schematic diagram of the internal structure of the body at point A in the middle.

[0022] Figure 4 This is an enlarged schematic diagram of the connection structure of the insurance component. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0026] Reference Figures 1-4 This embodiment provides a high-current built-in switch, including a snap-fit ​​assembly 1, a safety cover 11, and an energy cover 12 disposed on the other side of the end of the safety cover 11; The fuse assembly 2 includes a terminal block 21, a fuse cable 22 flexibly connected to the bottom of the terminal block 21, and a sub-wire 23 disposed on one side of the terminal block 21.

[0027] As an optional embodiment, the power cover 12 covers the safety cover 11; The power cover 12 includes a stud 121 disposed on one side thereof.

[0028] In this embodiment, the electricity meter has an embedded circuit board, electronic components, and other parts to achieve real-time monitoring of the circuit's power usage. A safety cover 11 is located on the upper surface of the electricity meter to protect the internal components. Above the safety cover 11 is an electricity cover 12, which protects the wiring of external electrical switching equipment connected to the electricity meter.

[0029] Specifically, the safety cover 11 is horizontally hinged to the top of the electricity meter, while the electricity cover 12 is vertically hinged to the side wall of the electricity meter, so that the closing directions of the two are offset. During use, the safety cover 11 must be closed first before the electricity cover 12 can be closed, so that the electricity cover 12 can cover the safety cover 11, thereby achieving a double protection for the components inside the electricity meter.

[0030] As an optional embodiment, the L-shaped cover plate 111 includes a hinge hole disposed at its end and a hinge shaft disposed outside the hinge hole, wherein the hinge hole is hinged to the hinge shaft by a torsion spring.

[0031] In this embodiment, the L-shaped cover plate 111 is L-shaped, which can better fit the structure of closing at the upper and lower ends of the energy meter, ensuring good sealing of the electronic components inside the energy meter after the L-shaped cover plate 111 is closed. The L-shaped cover plate 111 has outwardly protruding buckles 112 on both sides, which can be snapped onto the sides of the energy meter. Two sets of electric push rods 32 are provided at the positions where the buckles 112 snap onto the sides of the energy meter. The electric push rods 32 can be electrically controlled to effectively lift the buckles 112, thus disengaging the buckles 112 from the energy meter.

[0032] Specifically, two sets of latching arms 113 protrude outward from the side of the L-shaped cover plate 111. After the L-shaped cover plate 111 is closed, the latching arms 113 can effectively cover both sides of the terminal block 21, so that the terminal block 21 and the fuse bar 22 are tightly connected together, and the electrical connection between the terminal block 21 and the fuse bar 22 is realized.

[0033] In this embodiment, the power cover 12 is longitudinally hinged to the side wall of the power meter. A set of studs 121 protrudes from the side of the power cover 12, and a mating interface also protrudes from the side of the power meter. After the safety cover 11 is first covered, the buckles 112 on both sides of the cover are snapped into the sides of the power meter. Then, the power cover 12 is closed, and after the studs 121 and the mating interface are connected, the cover is tightened with bolts, thus achieving double fixation of the power cover 12 and the safety cover 11.

[0034] As an alternative embodiment, the L-shaped cover 111 includes a hinge hole disposed at its end; The electricity meter includes a hinge shaft located outside the hinge hole, and the hinge hole is hinged to the hinge shaft by a torsion spring.

[0035] In this embodiment, one side of the L-shaped cover plate 111 is provided with a hinge hole to enable the L-shaped cover plate 111 to rotate. A hinge shaft is provided at the corresponding position on the electricity meter, allowing the hinge hole and hinge shaft to be fitted together. A torsion spring is added to both the hinge hole and the hinge shaft. When the latch 112 is no longer restricted by the side wall of the electricity meter, the L-shaped cover plate 111 can be flipped under the action of the torsion spring.

[0036] Reference Figure 4 In some embodiments, the terminal block 21 includes pressing sections 211 disposed on both sides thereof; After the buckle arm 113 is closed, it is pressed against the end face of the pressing section 211.

[0037] In this embodiment, two sets of symmetrical pressing sections 211 protrude outward from both ends of the terminal 21, and the pressing sections 211 correspond to the latching arms 113 on both sides of the L-shaped cover plate 111. When the latching arms 113 close with the L-shaped cover plate 111, the latching arms 113 can press down on the pressing sections 211 on both sides of the terminal 21. Under the pressing action of the latching arms 113, the pressing sections 211 can drive the terminal 21 to press down, so that the terminal 21 and the fuse bar 22 are connected. This allows the line current of the external electrical switching equipment to directly reach the circuit board of the energy meter after the connection between the terminal 21 and the fuse bar 22, realizing real-time monitoring of the circuit's power usage.

[0038] As an optional embodiment, the terminal block 21 further includes multiple sets of wiring holes 212, a fixing member 213 disposed at the end of each set of wiring holes 212, a spring piece 214 disposed inside the wiring hole 212, and a mating assembly 215 disposed at the bottom of the wiring hole 212.

[0039] As an optional embodiment, the docking assembly 215 includes a metal sheet 2151 disposed at the bottom of the wiring hole 212, an extension plate 2152 disposed at the bottom of the metal sheet 2151, and a contact cap 2153 disposed at the bottom of the extension plate 2152.

[0040] In this embodiment, the terminal block 21 has multiple sets of linear array wiring holes 212, and the wiring holes 212 can hold the wires of external electrical switching equipment to realize the connection of the wires.

[0041] A spring tab 214 extends downward from the end of the wiring hole 212. The spring tab 214 can elastically press the sub-wire 23 into the wiring hole 212. A fixing member 213 is threadedly connected to the end of the wiring hole 212. After the fixing member 213 is threadedly connected, the sub-wire 23 is fixed in the wiring hole 212. A metal plate 2151 is fixedly snapped onto the bottom inner side of the wiring hole 212. When the sub-wire 23 is inserted, the metal plate 2151 is electrically connected to the sub-wire 23, and the bottom of the metal plate 2151 directly contacts the extension plate 2152. The bottom of the extension plate 2152 has a downward protruding contact cap 2153. When the sub-wire 23 is inserted into the wiring hole 212, the contact cap 2153 also becomes energized.

[0042] As an optional embodiment, the safety cable strip 22 includes a mating groove 221 that mates with the contact cap 2153, and a downward inclined groove 222 disposed on one side of the safety cable strip 22.

[0043] As an optional embodiment, the terminal block 21 further includes an upper inclined groove 216 that mates with the lower inclined groove 222; It also includes springs M disposed inside the upper inclined groove 216 and the lower inclined groove 222.

[0044] In this embodiment, as Figure 4 As shown, the mating groove 221 and the contact cap 2153 cooperate. When the terminal 21 is pressed down, the contact cap 2153 contacts the terminal cap 2153 to achieve current connection.

[0045] Preferably, the extension plate 2152 and the contact cap 2153 contain electrically conductive materials, and the cap end of the contact cap 2153 is conductive, so that after contacting the mating groove 221, it supplies power to the fuse bar 22.

[0046] Specifically, multiple sets of downward-sloping slots 222, corresponding to the number of contact caps 2153 at the upper terminal block 21, are provided on one side of the fuse bar 22. Similarly, an equal number of upward-sloping slots 216 are provided through the bottom of the wiring hole 212. Springs M are installed in the downward-sloping slots 222 and the upward-sloping slots 216. When the latch arm 113 is raised along with the L-shaped cover plate 111, and the latch arm 113 can no longer press down on the pressing section 211, the spring M can lift the upward-sloping slots 216, so that the cap end of the contact cap 2153 no longer contacts the mating slot 221, thereby disconnecting the current.

[0047] When in use, when the operator is performing maintenance, the power cover 12 must first be released from the power meter lock, and then the buckles 112 on both sides of the L-shaped cover 111 are fastened and connected. Then, the L-shaped cover 111 is allowed to flip down under the reset of the built-in torsion spring, so that the latch arm 113 rises with the L-shaped cover 111. When the latch arm 113 cannot be pressed down on the pressing section 211, the spring M can lift the upper inclined groove 216, so that the cap end of the contact cap 2153 is no longer in contact with the mating groove 221, thereby achieving the disconnection of current.

[0048] In summary, the high-current built-in switch of this utility model, through a special double pressure plate closing mechanism, forces the operator to close the power cover 12 before closing the safety cover 11, so that the operator will not make mistakes and avoid working with electricity.

[0049] Reference Figures 1-4 This embodiment provides a single-phase energy meter, including a meter body 3, a base box 31, two sets of electric push rods 32 disposed on both sides of the inner side of the base box 31, and a display screen 33 disposed inside the base box 31.

[0050] In this embodiment, the electric actuator 32 cooperates with the buckle 112. When the electric actuator 32 detects that the circuit current is greater than the high-end threshold of 150A of the single-phase energy meter of this device, the electric actuator 32 will be activated.

[0051] When the circuit board inside the electricity meter is overloaded, the electric push rod 32 is electrically activated, which opens the latches 112 on both sides of the L-shaped cover 111, thereby automatically opening the L-shaped cover 111. Finally, the spring M can lift the upper inclined groove 216, so that the cap end of the contact cap 2153 no longer contacts the mating groove 221, thus disconnecting the current.

[0052] At this time, the electricity meter is in a power-off protection state, effectively avoiding potential safety accidents caused by circuit overload. Simultaneously, this design makes the maintenance process simpler and faster, eliminating the need for operators to manually disconnect circuits one by one, greatly improving work efficiency. Furthermore, the automatic start function of the electric actuator 32 ensures that the electricity meter can respond quickly in emergencies, achieving self-protection and further enhancing the safety performance of the electricity meter.

[0053] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-current built-in switch, characterized in that: include, The snap-fit ​​assembly (1) includes a safety cover (11) and an energy cover (12) disposed on the other side of the end of the safety cover (11). The fuse assembly (2) includes a terminal block (21), a fuse busbar (22) elastically connected to the bottom of the terminal block (21), and a sub-wire (23) disposed on one side of the terminal block (21).

2. The high-current built-in switch as described in claim 1, characterized in that: The power cover (12) covers the safety cover (11); The power cover (12) includes a stud (121) disposed on one side thereof.

3. The high-current built-in switch as described in claim 1 or 2, characterized in that: The safety cover (11) includes an L-shaped cover plate (111), buckles (112) disposed on both sides of the L-shaped cover plate (111), and buckle arms (113) disposed on the side wall of the L-shaped cover plate (111).

4. The high-current built-in switch as described in claim 3, characterized in that: The L-shaped cover plate (111) includes a hinge hole at its end and a hinge shaft outside the hinge hole, wherein the hinge hole is hinged to the hinge shaft by a torsion spring.

5. The high-current built-in switch as described in claim 4, characterized in that: The terminal block (21) includes pressing sections (211) disposed on both sides thereof; After the buckle arm (113) is closed, it is pressed against the end face of the pressing section (211).

6. The high-current built-in switch as described in claim 4 or 5, characterized in that: The terminal block (21) also includes multiple sets of wiring holes (212), a fixing member (213) disposed at the end of each set of wiring holes (212), a spring piece (214) disposed inside the wiring hole (212), and a docking assembly (215) disposed at the bottom of the wiring hole (212).

7. The high-current built-in switch as described in claim 6, characterized in that: The docking assembly (215) includes a metal sheet (2151) disposed at the bottom of the wiring hole (212), an extension plate (2152) disposed at the bottom of the metal sheet (2151), and a contact cap (2153) disposed at the bottom of the extension plate (2152).

8. The high-current built-in switch as described in claim 7, characterized in that: The safety cable bar (22) includes a mating groove (221) that mates with the contact cap (2153) and a downward inclined groove (222) disposed on one side of the safety cable bar (22).

9. The high-current built-in switch as described in claim 8, characterized in that: The terminal block (21) also includes an upper inclined groove (216) that cooperates with the lower inclined groove (222). It also includes springs (M) disposed inside the upper inclined groove (216) and the lower inclined groove (222).

10. A single-phase electricity meter, characterized in that: Includes the high-current built-in switch as described in any one of claims 1 to 9, and further includes: The watch body (3) includes a base box (31), two sets of electric actuators (32) disposed on the two sides of the inner side of the base box (31), and a display screen (33) disposed on the inner side of the base box (31).

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