Shell structure of three-phase four-wire electric energy meter

Abstract

The utility model discloses a shell structure of a three-phase four-wire electric energy meter. The shell structure comprises a bottom shell and an upper cover arranged on the bottom shell, wherein the bottom shell and the upper cover are matched to form a mounting cavity; the terminal seat is arranged on the bottom shell and is used for connecting a circuit; the terminal cover is movably arranged on the upper cover and is used for covering the terminal seat; the limiting structure is arranged to limit the terminal seat and the bottom shell and is matched with the upper cover to limit separation of the terminal seat and the bottom shell; the bearing structure is arranged to bear the stress on the terminal seat through the upper cover and the bottom shell, and the fixing structure is arranged to be used for fixing the upper cover and the bottom shell. The electric energy meter has the following advantages and effects that the electric energy meter has higher structural strength, and the terminal seat can be prevented from being damaged, so that the service life of the electric energy meter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to a shell structure of a three-phase four-wire electric energy meter. Background Art

[0002] An energy meter is a meter used to measure how much electricity a user consumes, that is, an instrument that measures electrical work. It is usually installed on the main line of a household circuit so that it can measure the energy consumed by the entire household circuit.

[0003] The existing electric energy meter includes a bottom shell, an upper cover arranged on the bottom shell, a terminal seat installed on the bottom shell, a terminal cover installed on the upper cover and covering the terminal seat, and a limiting structure formed between the terminal seat and the bottom shell. The upper cover is fixedly arranged on the bottom shell and cooperates with the limiting structure to limit the separation of the terminal seat and the bottom shell. For some temporary power usage conditions, the lines connecting the electric energy meter are mostly temporarily built and temporarily laid, which leads to the temporary laid lines being easily pulled due to various unexpected situations during use, and the force acting on the lines will be transmitted to the terminal seat through the lines and act on the limiting structure. The existing limiting structure design does not take into account the above-mentioned special working conditions of heavy force, resulting in it not having a good load-bearing capacity, so that after being subjected to force, the terminal seat and the bottom shell are easily separated and damaged, which ultimately affects the service life of the electric energy meter. Utility Model Content

[0004] The utility model aims to provide a three-phase four-wire electric energy meter housing structure, which has a stronger structural strength and can avoid damage to the terminal seat, thereby extending the service life of the electric energy meter.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a three-phase four-wire electric energy meter shell structure, including: a bottom shell, which is arranged on the upper cover of the bottom shell and the bottom shell and the upper cover cooperate to form an installation cavity; a terminal seat, which is arranged on the bottom shell and is used to connect the line; a terminal cover, which is movably arranged on the upper cover and is used to cover the terminal seat; a limiting structure, which is arranged to constitute a limit for both the terminal seat and the bottom shell and cooperates with the upper cover to limit the separation of the terminal seat and the bottom shell; a load-bearing structure, which is arranged to bear the force on the terminal seat through the upper cover and the bottom shell, and a fixing structure, which is arranged to fix both the upper cover and the bottom shell.

[0006] By adopting the above technical solution, the fixing structure is used to fix the upper cover and the bottom shell, and the fixed upper cover is used to fix the terminal block and the bottom shell in cooperation with the set limiting structure. Then, the limiting structure is cooperated with the load-bearing structure to enable the bottom shell and the upper cover to bear the force from the terminal block and realize multi-point force bearing, thereby better dispersing the force on the terminal block, thereby improving the structural strength of the terminal block after installation, avoiding damage to the terminal block when subjected to the force of the line, thereby extending the service life of the electric energy meter.

[0007] It is further configured as follows: the load-bearing structure includes a docking arm connected to the terminal seat, an upper load-bearing arm connected to the upper cover, a lower load-bearing arm connected to the bottom shell, and a connecting structure formed among the docking arm, the upper load-bearing arm and the lower load-bearing arm.

[0008] By adopting the above technical solution, the docking arm, the upper load-bearing arm and the lower load-bearing arm are connected, so that the force on the terminal seat can be transmitted to the upper cover and the bottom shell through the three for bearing, thereby achieving the purpose of improving the structural strength and better dispersing the force.

[0009] It is further configured as follows: the connection structure is a docking hole formed on the docking arm, the upper load-bearing arm and the lower load-bearing arm both extend into the docking hole, and the upper load-bearing arm, the lower load-bearing arm and the docking hole cooperate to limit the reciprocating movement of the terminal seat along the direction in which the line is connected to the terminal seat.

[0010] By adopting the above technical solution, when the terminal seat is subjected to force, the force is transmitted to the docking arm, and then transmitted to the upper load-bearing arm and the lower load-bearing arm through the docking hole for bearing, thereby achieving the purpose of bearing force.

[0011] It is further configured as follows: a first guiding slope and a second guiding slope are respectively formed on the upper bearing arm and the lower bearing arm. When the upper bearing arm and the lower bearing arm are located in the docking hole, the first guiding slope and the second guiding slope abut against each other to drive the upper bearing arm and the lower bearing arm to move away from each other and press against the docking hole wall.

[0012] By adopting the above technical solution, the upper load-bearing arm and the lower load-bearing arm move away from each other under the action of the first guide bevel and the second guide bevel during the process of being inserted into the docking hole, and then are squeezed against the wall of the docking hole, so as to achieve precise positioning of the installation position of the terminal seat, compensate for the assembly tolerance formed between the assembly structures, and further improve the processing quality of the electric energy meter.

[0013] It is further configured as follows: the limiting structure includes a limiting slot having an opening and formed on the bottom shell, and a limiting plug formed on the terminal seat and inserted into the limiting slot, and the opening of the limiting slot faces the upper cover.

[0014] By adopting the above technical solution, the limiting plug block is inserted into the limiting slot to form the limiting installation of both the terminal seat and the bottom shell.

[0015] It is further configured as follows: the terminal cover is plugged into the bottom shell, a detachable locking assembly for locking the terminal cover is provided between the upper cover and the terminal cover, and when the locking assembly is in a locked state, the terminal cover is disposed on the terminal seat.

[0016] By adopting the above technical solution, the plug-in fixing method facilitates the opening and closing operations of the terminal cover, and the locking component is provided to prevent the terminal cover from being accidentally opened, thereby avoiding misoperation and safety hazards.

[0017] It is further configured that: the locking assembly includes a locking pin slidably arranged on the upper cover and a locking slot arranged on the terminal cover corresponding to the position of the locking pin and for the locking pin to be inserted, and the locking pin has a tendency to move toward the locking slot.

[0018] By adopting the above technical solution, when the electric energy meter is in use, the locking pin is oriented and inserted into the locking slot under the action of gravity to lock the terminal cover. When the terminal cover is to be opened, the locking pin is moved out of the locking slot.

[0019] In summary, the utility model has the following beneficial effects: the utility model has stronger structural strength, can avoid damage to the terminal seat, thereby extending the service life of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a partial exploded view of an embodiment;

[0022] Figure 3 It is a partial structural schematic diagram of an embodiment;

[0023] Figure 4 is another partial exploded view of the embodiment;

[0024] Figure 5 FIG. 2 is another partial structural diagram of an embodiment.

[0025] In the figure: 1. bottom shell; 2. upper cover; 3. terminal seat; 4. terminal cover; 51. docking arm; 52. upper load-bearing arm; 53. lower load-bearing arm; 54. docking hole; 6. first guide slope; 7. second guide slope; 81. limit slot; 82. limit plug; 9. locking assembly; 91. locking pin; 92. locking slot; 10. fixing screw. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] refer to Figures 1 to 5 A three-phase four-wire electric energy meter shell structure includes: a bottom shell 1, an upper cover 2 covered on the bottom shell 1, and the bottom shell 1 and the upper cover 2 cooperate to form an installation cavity; a terminal seat 3, arranged on the bottom shell 1 and used to connect the line; a terminal cover 4, movably arranged on the upper cover 2 and used to cover the terminal seat 3; a limiting structure, arranged to constitute a limit for both the terminal seat 3 and the bottom shell 1, and cooperate with the upper cover 2 to limit the separation of the terminal seat 3 from the bottom shell 1; a load-bearing structure, arranged to bear the force on the terminal seat 3 through the upper cover 2 and the bottom shell 1, and a fixing structure, arranged to fix the upper cover 2 and the bottom shell 1.

[0028] The load-bearing structure includes a docking arm 51 integrally connected to the terminal seat 3, an upper load-bearing arm 52 integrally connected to the upper cover 2, a lower load-bearing arm 53 integrally connected to the bottom shell 1, and a connection structure formed among the docking arm 51, the upper load-bearing arm 52 and the lower load-bearing arm 53. The connection structure is a docking hole 54 formed in the docking arm 51, the upper load-bearing arm 52 and the lower load-bearing arm 53 both extend into the docking hole 54, and the upper load-bearing arm 52, the lower load-bearing arm 53 and the docking hole 54 cooperate to limit the reciprocating movement of the terminal seat 3 along the direction in which the line is connected to the terminal seat 3.

[0029] The upper bearing arm 52 and the lower bearing arm 53 are respectively provided with a first guiding slope 6 and a second guiding slope 7. When the upper bearing arm 52 and the lower bearing arm 53 are located in the docking hole 54, the first guiding slope 6 and the second guiding slope 7 abut against each other to drive the upper bearing arm 52 and the lower bearing arm 53 to move away from each other and press against the wall of the docking hole 54.

[0030] The limiting structure includes a limiting slot 81 with an opening formed in the bottom shell 1 and a limiting plug 82 integrally formed in the terminal block 3 and inserted into the limiting slot 81, and the opening of the limiting slot 81 faces the upper cover 2. The fixing structure is a plurality of fixing screws for fixing the upper cover 2 and the bottom shell 1, and the fixing screws pass through the upper cover 2 and are threadedly connected with the bottom shell 1.

[0031] The terminal cover 4 is plugged into the bottom shell 1, and a detachable locking assembly 9 for locking the terminal cover 4 is provided between the upper cover 2 and the terminal cover 4. When the locking assembly 9 is in a locked state, the terminal cover 4 is covered on the terminal seat 3. The locking assembly 9 includes a locking pin 91 slidably provided on the upper cover 2 and a locking slot 92 provided on the terminal cover 4 at a position corresponding to the locking pin 91 and for inserting the locking pin 91. When the electric energy meter is in a vertical use state, the locking pin 91 has a tendency to move toward the locking slot 92 under the action of gravity.

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A three-phase four-wire electric energy meter housing structure, characterized in that: include: A bottom shell (1) is arranged on an upper cover (2) of the bottom shell (1) and the bottom shell (1) and the upper cover (2) cooperate to form an installation cavity; a terminal seat (3) is arranged on the bottom shell (1) and is used to connect a circuit; a terminal cover (4) is movably arranged on the upper cover (2) and is used to cover the terminal seat (3); a limiting structure is arranged to constitute a limit for both the terminal seat (3) and the bottom shell (1) and cooperates with the upper cover (2) to limit the separation of the terminal seat (3) and the bottom shell (1); a load-bearing structure is arranged to bear the force on the terminal seat (3) through the upper cover (2) and the bottom shell (1); and a fixing structure is arranged to fix both the upper cover (2) and the bottom shell (1).

2. The three-phase four-wire electric energy meter housing structure according to claim 1 is characterized in that: The load-bearing structure comprises a docking arm (51) connected to the terminal seat (3), an upper load-bearing arm (52) connected to the upper cover (2), a lower load-bearing arm (53) connected to the bottom shell (1), and a connecting structure formed among the docking arm (51), the upper load-bearing arm (52) and the lower load-bearing arm (53).

3. The housing structure of the three-phase four-wire electric energy meter according to claim 2 is characterized in that: The connection structure is a docking hole (54) formed on the docking arm (51), the upper load-bearing arm (52) and the lower load-bearing arm (53) both extend into the docking hole (54), and the upper load-bearing arm (52), the lower load-bearing arm (53) and the docking hole (54) cooperate to limit the reciprocating movement of the terminal seat (3) along the direction in which the line is connected to the terminal seat (3).

4. The three-phase four-wire electric energy meter housing structure according to claim 3 is characterized in that: A first guiding inclined surface (6) and a second guiding inclined surface (7) are respectively formed on the upper bearing arm (52) and the lower bearing arm (53); when the upper bearing arm (52) and the lower bearing arm (53) are located in the docking hole (54), the first guiding inclined surface (6) and the second guiding inclined surface (7) abut against each other to drive the upper bearing arm (52) and the lower bearing arm (53) to move in opposite directions and abut against the wall of the docking hole (54).

5. The housing structure of the three-phase four-wire electric energy meter according to claim 1 is characterized in that: The limiting structure comprises a limiting slot (81) having an opening and formed on the bottom shell (1) and a limiting plug (82) formed on the terminal seat (3) and inserted into the limiting slot (81), wherein the opening of the limiting slot (81) faces the upper cover (2).

6. The three-phase four-wire electric energy meter housing structure according to claim 1, characterized in that: The terminal cover (4) is plugged into the bottom shell (1), and a detachable locking component (9) for locking the terminal cover (4) is provided between the upper cover (2) and the terminal cover (4); when the locking component (9) is in a locked state, the terminal cover (4) is covered on the terminal seat (3).

7. The three-phase four-wire electric energy meter housing structure according to claim 6 is characterized in that: The locking assembly (9) comprises a locking pin (91) slidably arranged on the upper cover (2) and a locking slot (92) arranged on the terminal cover (4) at a position corresponding to the locking pin (91) and for the locking pin (91) to be inserted, and the locking pin (91) has a tendency to move toward the locking slot (92).

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