Auxiliary terminal positioning structure of electric energy meter

Abstract

The utility model relates to an auxiliary terminal positioning structure of an electric energy meter. The auxiliary terminal positioning structure comprises a terminal connecting disc and an electric connecting piece, the surface of the terminal connecting disc is provided with at least two limiting connecting grooves, and an electric connecting piece is arranged between the two limiting connecting grooves; the limiting connecting groove comprises two side faces and an end face. A buckle limiting groove is formed in the side face of the limiting connecting groove, an inserting groove is formed in the end face of the limiting connecting groove, an inserting limiting groove is formed in the inner wall of the inserting groove, and a power connecting hole is formed in the inserting groove. A plug-in terminal is arranged in the limiting connecting groove, a buckle limiting block is arranged on the plug-in terminal, the buckle limiting block is matched with the buckle limiting groove, a plug-in head is arranged on the plug-in terminal, a plug-in limiting block is arranged on the plug-in head, and the plug-in limiting block is matched with the plug-in limiting groove; an electric power connecting wire is fixed on the plugging terminal, and the plugging electric power head is inserted into the electric power connecting hole and is connected with the electric connecting piece; and the installation stability of the terminal of the electric energy meter and the safety of electric energy transmission are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric energy meter especially relates to a kind of electric energy meter auxiliary terminal positioning structure. BACKGROUND

[0002] As the core equipment of electric energy measurement and settlement, the reliability, security and accuracy of electric energy meter are crucial. In modern smart grid, electric energy meter not only needs to complete basic measurement function, but also needs to bear advanced tasks such as load control, data acquisition, information interaction, rate switching. The realization of these functions depends largely on the auxiliary terminal set on electric energy meter. In the automatic assembly production line of electric energy meter, auxiliary terminal module is usually grabbed and installed to the predetermined position of meter shell by mechanical hand as an independent component. The existing positioning structure is often too simple (such as only relying on one or two cylindrical positioning pins), and small misalignment may occur due to mechanical deviation or vibration in high-speed assembly process. This misalignment may cause the pins on the terminal module and the pads or sockets on the circuit board to be unable to accurately align, thereby causing problems such as insertion difficulty, virtual welding and even damage to the pins, which seriously affects the production yield and efficiency. SUMMARY

[0003] To solve the above problems, the utility model provides a kind of electric energy meter auxiliary terminal positioning structure.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] A kind of electric energy meter auxiliary terminal positioning structure, including terminal connecting disc and the electric connection piece being set in terminal connecting disc;The surface of the terminal connecting disc is provided with at least two limit connection grooves, and the electric connection piece is between two limit connection grooves;The limit connection groove includes two sides oppositely arranged, and the end surface connecting the two sides;Buckle limit slot is opened in the side of the limit connection groove, and the end surface of the limit connection groove is provided with insertion slot, and the inner wall of the insertion slot is provided with insertion limit slot, and the insertion slot is provided with electric power connection hole;Insertion terminal is arranged in the limit connection groove, buckle limit block is arranged on the insertion terminal, buckle limit block cooperates with buckle limit slot, insertion head is arranged on the head of the insertion terminal, insertion limit block is arranged on the insertion head, and insertion limit block cooperates with insertion limit slot;Electric power connection wire is fixed on the insertion terminal, the electric power connection wire passes through insertion terminal and insertion head and forms insertion power head on insertion head, the insertion power head is inserted into electric power connection hole and connected with electric connection piece.

[0006] Further specifically, the buckle limit block and the buckle limit slot are respectively provided with two and one-to-one correspondence, and the two buckle limit blocks are respectively located on the two sides of the insertion terminal and symmetrically arranged.

[0007] Further, the buckle limiting block is located at the upper or lower part of the side of the plug-in terminal to form a fool-proof structure.

[0008] Further, the four plug-in limiting blocks are evenly distributed around the plug-in head.

[0009] Further, a sealing top disc is arranged at the top of the buckle limiting slot, and a sealing isolation pad is arranged on one side of the sealing top disc and is crimped on the plug-in terminal.

[0010] Further, a first fixed connection hole is arranged on the plug-in terminal, and a second fixed connection hole is arranged on the sealing top disc and the sealing isolation pad, and the first fixed connection hole and the second fixed connection hole are fixed by a fixed screw.

[0011] Further, the sealing top disc and the terminal connecting disc are connected through a rotating shaft.

[0012] Further, the second fixed connection hole is a countersunk hole.

[0013] Further, the limiting connection slot is provided with two rows of limiting connection slots located on the opposite sides of the terminal connecting disc, and the electrical connecting piece is located between the two rows of limiting connection slots.

[0014] The utility model discloses a beneficial effect is: through the buckle limiting slot of limiting connection slot and the buckle limiting block of plug-in terminal cooperation, the plug-in limiting block of limiting connection slot end surface plug-in slot and the plug-in limiting block of plug-in terminal plug-in head cooperation, realized the positioning of plug-in terminal, effectively prevent its loose or wrong loading, simultaneously, the plug-in power head formed by the power connection line on the plug-in terminal is inserted into the power connection hole in the plug-in slot and is connected with the electrical connecting piece, guarantees the reliable conduction of external line and internal electrical connecting piece, overall ensures the stability of electric energy meter terminal installation and the safety of electric energy transmission. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure diagram of the utility model electric energy meter auxiliary terminal positioning structure Figure One ;

[0016] Figure 2 It is the structure diagram of the utility model electric energy meter auxiliary terminal positioning structure Figure Two ;

[0017] Figure 3 It is the structure diagram of the utility model plug-in terminal.

[0018] In the figure: 10, terminal connecting plate; 20, electrical connecting piece; 30, limiting connecting groove; 31, buckle limiting groove; 32, plug-in groove; 40, plug-in terminal; 41, buckle limiting block; 42, plug-in head; 43, plug-in limiting block; 44, first fixed connecting hole; 50, power connecting line; 51, power head; 60, sealing top disc; 61, sealing isolation pad; 62, second fixed connecting hole; 63, rotating shaft. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The direction of movement is also a relative direction of movement, and does not limit the absolute direction of movement. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figure 1 , Figure 2The application provides an auxiliary terminal positioning structure of an electric energy meter, which is composed of a terminal connecting plate 10, an electric connecting piece 20 and a plug-in terminal 40. The terminal connecting plate 10 serves as a main structure, and at least two limiting connection grooves 30 are arranged on the surface of the terminal connecting plate 10 (the number of the limiting connection grooves 30 can be adjusted according to the wiring requirements of the electric energy meter, such as the incoming line and the outgoing line), and the electric connecting piece 20 is embedded in the terminal connecting plate 10 and located between the limiting connection grooves 30, thereby providing a channel for the subsequent electric energy transmission of the plug-in terminal 40. The plug-in terminal 40 is used for connecting the external line and the internal electric connecting piece 20, and one end of the plug-in terminal 40 is fixedly connected to the electric power connecting line 50 by crimping or screwing, and the other end of the plug-in terminal 40 is embedded in the limiting connection groove 30, thereby achieving the positioning and electric connection.

[0023] The limiting connection groove 30 and the plug-in terminal 40 are matched by a double positioning structure to ensure the installation accuracy. The two side surfaces of the limiting connection groove 30 are provided with buckle limiting grooves 31. Figure 3 The plug-in terminal 40 is provided with buckle limiting blocks 41 at the corresponding positions, and the plug-in terminal 40 and the buckle limiting blocks 41 can effectively prevent the terminal from being pulled out from the side and limit the horizontal movement. The end surface of the limiting connection groove 30 is provided with a plug-in groove 32, and the inner wall of the plug-in groove 32 is provided with a plug-in limiting groove. The plug-in head 42 of the head of the plug-in terminal 40 is provided with corresponding plug-in limiting blocks 43 around the plug-in head 42, and the plug-in limiting blocks 43 are uniformly arranged around the plug-in head 42. The plug-in terminal 40 is fixedly connected to the electric power connecting line 50. The electric power connecting line 50 passes through the plug-in terminal 40 and the plug-in head 42 to form a plug-in electric power head 51 at the end of the plug-in head 42. After the plug-in electric power head 51 is inserted into the electric power connecting hole in the plug-in groove 32, the plug-in electric power head 51 is in close contact with the electric connecting piece 20, thereby finally forming a complete electric conduction path, and the positioning stability and the electric conduction reliability are considered.

[0024] The buckle limiting blocks 41 and the buckle limiting grooves 31 are respectively provided with two buckle limiting blocks 41 and two buckle limiting grooves 31, and the two buckle limiting blocks 41 are symmetrically arranged on the two sides of the plug-in terminal 40. That is, the two buckle limiting blocks 41 are fixedly arranged on the opposite sides of the plug-in terminal 40 and symmetrically arranged with the central axis of the plug-in terminal 40 as the reference. Correspondingly, the two buckle limiting grooves 31 are also synchronously arranged on the two opposite side surfaces of the limiting connection groove 30, and the positions of the buckle limiting grooves 31 are completely aligned with the buckle limiting blocks 41. Therefore, the forces on the two sides of the plug-in terminal 40 are balanced, the inclination of the terminal caused by unilateral buckling is avoided, the horizontal fixing strength is greatly improved, the terminal is prevented from loosening or being pulled out due to vibration or external force in use, and the basis for the stability of the subsequent electric connection is provided.

[0025] The buckle limiting block 41 needs to be arranged on the upper part or lower part of the side surface of the plug-in terminal 40, rather than in the middle position, and forms position matching constraint with the buckle limiting groove 31 on the side surface of the limiting connection groove 30. Since the buckle limiting groove 31 needs to correspond to the buckle limiting block 41, the position of the buckle limiting groove 31 on the side surface of the limiting connection groove 30 will also be in the upper part or lower part, consistent with the position of the block on the plug-in terminal 40. When the plug-in terminal 40 is installed by the operator, if the plug-in terminal 40 is upside down due to incorrect operation, the buckle limiting block 41 on the side surface of the plug-in terminal 40 will be completely out of position due to the upside down position, and cannot be inserted into the buckle limiting groove 31 on the side surface of the limiting connection groove 30, so that the plug-in terminal 40 cannot be smoothly inserted into the limiting connection groove 30, thereby achieving the anti-fumble effect.

[0026] The plug-in limiting block 43 and the plug-in limiting groove are respectively arranged in one-to-one correspondence, and the four plug-in limiting blocks 43 are uniformly distributed around the plug-in head 42, that is, the four plug-in limiting blocks 43 are arranged at intervals along the outer peripheral wall of the plug-in head 42, and the angle between adjacent limiting blocks is 90 degrees, forming a symmetrical and balanced distribution, thereby forming constraint from four directions of the plug-in head 42, and being embedded in the four plug-in limiting grooves arranged on the inner wall of the plug-in groove 32 in one-to-one correspondence. At the same time, the one-to-one correspondence design of the four groups of structures can also ensure the position of the plug-in head 42 through multi-point alignment during installation, prevent the plug-in head 42 from being skewed in the plug-in groove 32, and further improve the positioning accuracy.

[0027] A sealing top disc 60 is arranged on the top of the buckle limiting groove 31, and a sealing isolation pad 61 is arranged on one side of the sealing top disc 60. When the plug-in terminal 40 is installed in place, the sealing isolation pad 61 will be directly crimped on the surface of the plug-in terminal 40, thereby blocking dust, water vapor and other external impurities from entering the inside of the limiting connection groove 30 through physical adhesion, and avoiding the influence of pollution on the electrical connection part to ensure the conductivity reliability.

[0028] In order to ensure the positioning in the axial direction, a first fixed connection hole 44 is arranged on the plug-in terminal 40, and a second fixed connection hole 62 is arranged on the sealing top disc 60 and the sealing isolation pad 61 in correspondence. During installation, the fixed screw is screwed into the first fixed connection hole 44 after passing through the second fixed connection hole 62, and the sealing top disc 60, the sealing isolation pad 61 and the plug-in terminal 40 are tightly adhered by the fastening force of the fixed screw, thereby strengthening the sealing effect and preventing the displacement of the sealing part during use, and further ensuring the stability of the overall structure.

[0029] The sealing top disc 60 is connected with the terminal connecting disc 10 through the rotating shaft 63, the sealing top disc 60 can be turned to open, the sealing top disc 60 is not lost or inconvenient to store after being disassembled; when overhauling, the sealing top disc 60 is turned to contact the internal part of the limiting connecting groove 30, the operation is more convenient, the connection relationship between the two is maintained, the complexity of component assembly is reduced; the second fixed connecting hole 62 is a counterbore hole, the head of the fixing screw can be completely embedded in the counterbore hole, the head does not protrude from the surface of the sealing top disc 60, the head of the screw does not interfere with other components, and the surface of the overall structure is more flat.

[0030] The limiting connecting groove 30 is provided with two rows of limiting connecting grooves 30 located on the opposite sides of the terminal connecting disc 10, the electric connecting piece 20 is located between the two rows of limiting connecting grooves 30, and the electric connecting piece 20 can be a PCB board; the electric connecting piece 20 is arranged at the middle position, so that the plug-in terminals 40 in the two rows of limiting connecting grooves 30 can be more conveniently connected with the electric connecting piece 20, the internal structure of the terminal connecting disc 10 is simplified, the overall layout is more compact, and the internal space of the terminal connecting disc 10 is fully utilized.

[0031] The electric energy meter auxiliary terminal positioning structure is centrally arranged through the two rows of limiting connecting grooves 30 on the two sides of the terminal connecting disc 10 and the electric connecting piece 20, the double positioning and fool-proof design of buckling and plugging are combined, the precision and error prevention of terminal installation are realized, the sealing and stability of the connection are guaranteed by the sealing top disc 60 and the fixing structure, and finally the effects of reliable terminal conduction, convenient installation and reasonable space utilization are achieved.

[0032] It should be emphasized that: the above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical scheme of the present application.

Claims

1. An auxiliary terminal positioning structure of an electric energy meter, characterized by comprising: The utility model provides a terminal connecting disc (10) and the electric connector (20) of setting in terminal connecting disc (10), terminal connecting disc (10) surface is equipped with at least two limit connection groove (30), and the electric connector (20) between two limit connection groove (30), limit connection groove (30) includes two opposite sides and the end face of connecting two sides, buckle limit slot (31) is seted up in the side of limit connection groove (30), and the end face of limit connection groove (30) is provided with the plug-in slot (32), and the inner wall of plug-in slot (32) is provided with the plug-in limit slot, and the electric power connection hole is seted up in the plug-in slot (32), the plug-in terminal (40) is seted up in limit connection groove (30), and the buckle limit block (41) is seted up on plug-in terminal (40), and the buckle limit block (41) is matched with buckle limit slot (31), and the plug-in head (42) is seted up in the head of plug-in terminal (40), and the plug-in limit block (43) is seted up on plug-in head (42), and the plug-in limit block (43) is matched with plug-in limit slot, and the electric power connection wire (50) is fixed on plug-in terminal (40), and the electric power connection wire (50) passes through plug-in terminal (40) and plug-in head (42) and forms plug-in electric power head (51) on plug-in head (42), and plug-in electric power head (51) is inserted into electric power connection hole and is connected with electric connector (20).

2. The auxiliary terminal positioning structure for an electric energy meter according to claim 1, wherein The buckle limit block (41) and the buckle limit slot (31) are respectively provided with two and one-to-one correspondence, and the two buckle limit blocks (41) are respectively located on the two sides of the plug-in terminal (40) and are symmetrically arranged.

3. The auxiliary terminal positioning structure for an electric energy meter according to claim 2, wherein The buckle limit block (41) is located on the upper part or the lower part of the side of the plug-in terminal (40) to form a foolproof structure.

4. The auxiliary terminal positioning structure for an electric energy meter according to claim 1, wherein The plug-in limit block (43) and the plug-in limit slot are respectively provided with four and one-to-one correspondence, and the four plug-in limit blocks (43) are uniformly distributed around the plug-in head (42).

5. The auxiliary terminal positioning structure for an electric energy meter according to claim 1, wherein A sealing top disc (60) is arranged on the top of the buckle limit slot (31), and a sealing isolation pad (61) is arranged on one side of the sealing top disc (60), and the sealing isolation pad (61) is crimped on the plug-in terminal (40).

6. The auxiliary terminal positioning structure for an electric energy meter according to claim 5, wherein A first fixed connection hole (44) is arranged on the plug-in terminal (40), a second fixed connection hole (62) is arranged on the sealing top disc (60) and the sealing isolation pad (61), and the first fixed connection hole (44) and the second fixed connection hole (62) are fixed by a fixed screw.

7. The auxiliary terminal positioning structure for an electric energy meter according to claim 5, wherein The sealing top disc (60) and the terminal connecting disc (10) are connected by a rotating shaft (63).

8. The auxiliary terminal positioning structure for an electric energy meter according to claim 6, wherein The second fixed connection hole (62) is a countersunk hole.

9. The auxiliary terminal positioning structure for an electric energy meter according to claim 1, wherein The limit connection groove (30) is provided with two rows located on the opposite sides of the terminal connecting disc (10), and the electric connector (20) is located between the two rows of limit connection grooves (30).

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