Connection terminal structure and electric energy meter

Abstract

The application provides a wiring terminal structure and an electric energy meter. The wiring terminal structure comprises a fixing sleeve, a wiring frame, a locking screw, a first wiring component and a second wiring component. The wiring frame has a threaded hole and can move along the axial direction of the threaded hole. The locking screw is screwed in the threaded hole to drive the wiring frame to move along the axial direction of the threaded hole. The first wiring component and the second wiring component are at least partially located in the wiring frame. One end of the locking screw passes through the threaded hole and abuts against the first wiring component, and the other end abuts against the fixing sleeve. A through hole corresponding to the locking screw is formed in the fixing sleeve. The first wiring component is used to limit the downward movement of the wiring terminal structure as a whole, and the fixing sleeve is used to limit the upward movement of the wiring terminal structure as a whole, so that the phenomenon of the upward and downward shaking of the wiring terminal structure is avoided, and the overall stability of the wiring terminal structure is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, in particular to a wiring terminal structure and an electric energy meter. BACKGROUND

[0002] At present, in order to facilitate the connection of the power line to the electrical equipment, the power line is usually pressed and connected to the wiring of the electrical equipment by screws. Since this wiring terminal structure is simple and convenient to connect, it is widely used in the wire connection of various electrical equipment.

[0003] However, when the thickness of the connected power line changes, for example, the measurement range of the electric energy meter changes from 60A to 100A to 1.5A to 5A, the original thick power line needs to be replaced with a thin power line. The wiring terminal using the screw pressing method will be difficult to ensure the electrical connection of the thin power line, thereby increasing the wiring loop resistance and causing the overall temperature of the electrical equipment to rise, and even causing the electrical equipment to catch fire. SUMMARY

[0004] The present application provides a wiring terminal structure and an electric energy meter, aiming to solve the technical problem that the current wiring terminal is difficult to adapt to power lines of different sizes.

[0005] In a first aspect, the present application provides a wiring terminal structure, characterized in that it comprises:

[0006] a fixed sleeve;

[0007] a wiring frame having a threaded hole and being movable along the axial direction of the threaded hole;

[0008] a locking screw, which is screwed into the threaded hole to drive the wiring frame to move along the axial direction of the threaded hole;

[0009] a first wiring component and a second wiring component, which are at least partially located in the wiring frame;

[0010] One end of the locking screw passes through the threaded hole and abuts against the first wiring component, and the other end abuts against the fixed sleeve, and the fixed sleeve is provided with a through hole opposite to the locking screw.

[0011] In some embodiments, the wiring frame has a wiring position and a pressing position;

[0012] When the wiring frame is in the wiring position, the second wiring component and the first wiring component are separated from each other in the wiring frame; when the wiring frame is in the pressing position, the second wiring component and the first wiring component abut against each other in the wiring frame;

[0013] When the wiring frame is at any position between the wiring position and the pressing position, the distance between the first wiring component and the fixed sleeve remains unchanged

[0014] In some embodiments, the distance between the first wiring component and the fixing sleeve is less than or equal to the length of the locking screw.

[0015] In some embodiments, the wiring frame is conductive and the fixing sleeve is insulating.

[0016] When the wiring frame is in the crimping position, one side of the first wiring component is in contact with the locking screw and the other side is in contact with the second wiring component, and the side of the second wiring component away from the first wiring component is in contact with the inner wall surface of the wiring frame.

[0017] In some embodiments, the width of the first wiring component is equal to the inner width of the wiring frame.

[0018] In some embodiments, the locking screw has a screw shaft portion and a screw head portion.

[0019] The screw shaft portion is partially screwed into the threaded hole, and the screw head portion is at least partially embedded in the through hole, and the minimum diameter of the through hole is less than the maximum diameter of the screw head portion.

[0020] In some embodiments, the diameter of the through hole gradually decreases in the direction away from the locking screw; and / or

[0021] The diameter of the screw head portion gradually decreases in the direction away from the wiring frame.

[0022] In some embodiments, the outer wall surface of the screw head portion at least partially fits the inner wall surface of the through hole.

[0023] The minimum diameter of the through hole is greater than or equal to the minimum diameter of the screw head portion.

[0024] In a second aspect, the present application provides an electric energy meter, comprising:

[0025] A bottom shell having a plurality of wiring holes, and a plurality of wiring guide grooves inside the bottom shell, the wiring guide grooves corresponding one-to-one to the wiring holes.

[0026] The wiring terminal structure as described in the first aspect, the wiring frame is installed in the wiring guide groove and can move along the wiring guide groove, and the fixing sleeve is detachably connected with the bottom shell.

[0027] In some embodiments, the bottom shell has a plurality of guide walls inside, and adjacent guide walls jointly define a wiring guide groove at the wiring hole.

[0028] In some embodiments, the side of the guide wall away from the wiring guide groove is provided with a clamping block, and the side of the fixing sleeve facing the bottom shell is provided with a clasp.

[0029] The side of the fixing sleeve facing the bottom shell abuts against the guide wall, and the clasp is clamped with the clamping block.

[0030] In some embodiments, the one side of the fixing sleeve towards the bottom shell is also provided with a plurality of guide columns, and the inside of the bottom shell is provided with a plurality of guide holes;

[0031] The guide column corresponds to the guide hole, and the guide column cooperates with the guide hole.

[0032] In the application, the first and second wiring components are arranged in the wiring frame. The locking screw is installed in the threaded hole of the wiring frame, and the through hole corresponding to the locking screw is arranged on the fixing sleeve. When the locking screw is rotated through the through hole, the wiring frame can move along the axis direction of the threaded hole. The first wiring component is fixed at one end of the locking screw, and the second wiring component is finally abutted on the side of the first wiring component away from the locking screw, so that the first and second wiring components are in contact and conductive connection. Since the actual locking object during locking is the wiring frame, the power cord is not biased, so the application can be adapted to power cords of different diameters and ensure the electrical connection of the wiring terminal structure.

[0033] In addition, one end of the locking screw passes through the threaded hole and abuts on the first wiring component, and the other end abuts on the fixing sleeve. The positions of the locking screw, the first wiring component and the fixing sleeve are relatively fixed. After the first and second wiring components are locked, the first wiring component can limit the downward movement of the wiring terminal structure as a whole, and the fixing sleeve can limit the upward movement of the wiring terminal structure as a whole, avoiding the up-and-down shaking of the wiring terminal structure. This not only ensures the stability of the wiring terminal structure as a whole, but also facilitates the introduction of the second wiring component (such as a power cord or a test copper bar) from outside. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 is a structural schematic view of the wiring terminal structure provided in the embodiments of the application;

[0036] Figure 2 is a structural schematic view of the wiring position of the wiring frame provided in the embodiments of the application;

[0037] Figure 3 is a structural schematic view of the wiring position of the wiring frame provided in the embodiments of the application;

[0038] Figure 4is another structural schematic view of the wiring terminal structure provided in the embodiments of the present application;

[0039] Figure 5 is another structural schematic view of the wiring terminal structure provided in the embodiments of the present application;

[0040] Figure 6 is an assembly schematic view of the electric energy meter provided in the embodiments of the present application;

[0041] Figure 7 is an explosion schematic view of the electric energy meter provided in the embodiments of the present application;

[0042] Figure 8 is a top view of the electric energy meter provided in the embodiments of the present application;

[0043] Figure 9 is a cross-sectional schematic view of the present application at A-A; Figure 8

[0044] Figure 10 is a structural schematic view of the fixing sleeve provided in the embodiments of the present application.

[0045] wherein, 10 is the fixing sleeve, 11 is the through hole, 12 is the buckle, 121 is the dismounting groove, 13 is the guide column, 20 is the wiring frame, 21 is the threaded hole, 30 is the locking screw, 31 is the screw rod part, 32 is the screw head part, 40 is the first wiring component, 50 is the second wiring component, 60 is the bottom shell, 61 is the wiring hole, 62 is the wiring guide groove, 63 is the guide wall, 631 is the clamping block, and 64 is the guide hole.

[0046] d1: the width of the first wiring component;

[0047] d2: the inner width of the wiring frame;

[0048] D1: the minimum diameter of the through hole;

[0049] D2: the maximum diameter of the screw head part;

[0050] D3: the minimum diameter of the screw head part. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0052] ​In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0053] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, for purposes of explanation, specific details are set forth. It will be apparent to those skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features presented herein.

[0054] The present application provides a wiring terminal structure and an electric energy meter, which are described in detail below.

[0055] First, refer to Figure 1 , Figure 1 A structure of a wiring terminal structure in an embodiment of the present application is shown, wherein the wiring terminal structure comprises:

[0056] A fixing sleeve 10;

[0057] A wiring frame 20, the wiring frame 20 has a threaded hole 21 and can move along the axis direction of the threaded hole 21;

[0058] A locking screw 30, the locking screw 30 is screwed into the threaded hole 21 to drive the wiring frame 20 to move along the axis direction of the threaded hole 21;

[0059] The first and second wiring components 40 and 50 are at least partially located in the wiring frame 20;

[0060] One end of the locking screw 30 passes through the threaded hole 21 and abuts against the first wiring component 40, and the other end abuts against the fixing sleeve 10, which is provided with a through hole 11 opposite to the locking screw 30.

[0061] Specifically, the position of the fixing sleeve 10 remains unchanged to limit the positions of the locking screw 30 and the wiring frame 20 from moving upward. In some embodiments of the present application, the fixing sleeve 10 can be fixed on the housing of the electrical equipment near the connection of the power line, for example, at the bottom shell 60 of the meter installation terminal structure. In some embodiments of the present application, the fixing sleeve 10 can also be directly fixed on the first wiring component 40, so that the fixing sleeve 10 and the first wiring component 40 remain relatively fixed. In some embodiments of the present application, the fixing sleeve 10 and the first wiring component 40 remain relatively fixed, for example, when the fixing sleeve 10 and the first wiring component 40 are both installed in the bottom shell 60 of the meter, the positions of the fixing sleeve 10 and the first wiring component 40 are relatively fixed. In some embodiments of the present application, the fixing sleeve 10 can be in the shape of a strip structure to facilitate the limitation of the locking screw 30 on the wiring frame 20 arranged in a straight line.

[0062] It can be understood that the shape of the fixing sleeve 10 can also be approximately rectangular, circular or triangular, etc.; or, a plurality of fixing sleeves 10 can also be provided, each corresponding to one wiring frame 20, so that each fixing sleeve 10 limits the locking screw 30 on one wiring frame 20.

[0063] The wiring frame 20 is used to accommodate the first and second wiring components 40 and 50, and the wiring frame 20 can move along the axis direction of the threaded hole 21. When the wiring frame 20 moves in the direction close to the fixing sleeve 10, the position of the first wiring component 40 remains fixed, the second wiring component 50 can contact the inner wall of the wiring frame 20, and the second wiring component 50 can continue to move close to the first wiring component 40 along with the movement of the wiring frame 20, and finally the first and second wiring components 40 and 50 are tightly abutted and electrically connected in the wiring frame 20.

[0064] It should be noted that the wiring frame 20 does not rotate with the locking screw 30 when the locking screw 30 rotates. In some embodiments of the present application, the wiring frame 20 can be limited by the fixing sleeve 10, for example, the fixing sleeve 10 extends to both sides of the wiring frame 20 and is provided with a baffle, so that the wiring frame 20 is limited by the baffle and cannot rotate with the locking screw 30; for another example, the fixing sleeve 10 can be provided with a sliding column, and the wiring frame 20 is provided with a sliding hole and cooperates with the sliding column, so that the wiring frame 20 is limited by the sliding column and can only move along the axis direction of the threaded hole 21 without self-rotation. In some embodiments of the present application, the wiring frame 20 can be limited by the electric appliance shell, for example, a wiring guide groove 62 is arranged in the bottom shell 60 of the electric energy meter, and after the wiring frame 20 is installed in the wiring guide groove 62, the wiring frame 20 can only move without self-rotation.

[0065] Exemplarily, the shape of the wiring frame 20 can be a square frame structure, a circular frame structure, a triangular frame structure or a regular polygon frame structure, etc.

[0066] The first wiring component 40 is relatively fixed with the fixing sleeve 10, and the second wiring component 50 can move with the wiring frame 20. Generally, the first wiring component 40 is an internal electrical connection component of the electric appliance, and the second wiring component 50 is an external electrical connection component, for example, the first wiring component 40 can be a wiring copper plate of an internal mutual inductor of the electric energy meter, and the second wiring component 50 can be a power supply line or a test copper rod outside the electric energy meter; for another example, the first wiring component 40 can be a wiring copper plate inside the circuit breaker, and the second wiring component 50 can be a power supply line outside the circuit breaker.

[0067] The locking screw 30 is used to drive the wiring frame 20 to move along the axis direction of the threaded hole 21, for example, when the locking screw 30 rotates clockwise, the wiring frame 20 can move in the direction close to the fixing sleeve 10; when the locking screw 30 rotates counterclockwise, the wiring frame 20 can move in the direction away from the fixing sleeve 10. Exemplarily, the locking screw 30 can be a hexagonal socket screw, a cross slot screw, a set screw, a lifting ring screw, a press-in screw, a slotted screw or a keyway screw, etc.

[0068] In the embodiments of the present application, the first wiring component 40 and the second wiring component 50 are arranged in the wiring frame 20. The threaded hole 21 of the wiring frame 20 is provided with the locking screw 30, and the fixing sleeve 10 is provided with the through hole 11 opposite to the locking screw 30. When the locking screw 30 is rotated through the through hole 11, the wiring frame 20 can move along the axis direction of the threaded hole 21. The first wiring component 40 is fixed at one end of the locking screw 30, and the second wiring component 50 is finally abutted against the first wiring component 40 away from the locking screw 30, so that the first wiring component 40 and the second wiring component 50 are in contact and conductive connection. Since the actual locking object is the wiring frame 20 during the locking process, the power cord is not pressed and biased, and thus the power cord with different diameters can be adapted, and the electrical connection of the wiring terminal structure is ensured.

[0069] Meanwhile, one end of the locking screw 30 passes through the threaded hole 21 and abuts against the first wiring component 40, and the other end abuts against the fixing sleeve 10. The positions of the locking screw 30, the first wiring component 40 and the fixing sleeve 10 are relatively fixed. After the first wiring component 40 and the second wiring component 50 are locked, the first wiring component 40 can limit the downward movement of the whole wiring terminal structure, and the fixing sleeve 10 can limit the upward movement of the whole wiring terminal structure, so as to avoid the up-and-down shaking of the wiring terminal structure. The stability of the whole wiring terminal structure is ensured, and the second wiring component 50 (such as a power cord or a test copper rod) can be conveniently introduced. For example, when the external power cord is connected, the power cord can be conveniently inserted into the wiring frame 20 and electrically connected without shaking of the wiring terminal structure. For another example, when the electrical equipment (such as an electric energy meter) is tested before leaving the factory, the test copper rod can be quickly inserted into the wiring frame 20. The locking screw 30 can be rotated through the through hole 11 by using an automatic tool, so that the first wiring component 40 and the second wiring component 50 are in contact and conductive connection, and finally the automatic verification is realized to improve the production efficiency of the electrical equipment.

[0070] In some embodiments of the present application, continuing to refer to Figure 2 and Figure 3 , Figure 2 a structure diagram of the wiring position of the wiring frame 20 in the embodiments of the present application is shown, Figure 3Fig. 1 shows a schematic view of a structure of a wire pressing position of the wire frame 20 in the embodiment of the present application, wherein the wire frame 20 has a wire connecting position and a wire pressing position, when the wire frame 20 is in the wire connecting position, the second wire connecting part 50 and the first wire connecting part 40 are separated from each other in the wire frame 20; when the wire frame 20 is in the wire pressing position, the second wire connecting part 50 and the first wire connecting part 40 are pressed against each other in the wire frame 20. When the wire frame 20 is in any position between the wire connecting position and the wire pressing position, the distance between the first wire connecting part 40 and the fixed sleeve 10 remains unchanged.

[0071] It should be noted that the wire connecting position and the wire pressing position of the wire frame 20 can be adjusted by the locking screw 30, for example, when the locking screw 30 is counterclockwise rotated so that the upper surface of the first wire connecting part 40 is in contact with the inner top wall of the wire frame 20, at this time, the wire frame 20 is in the wire connecting position and leaves enough space for the second wire connecting part 50 outside to be inserted; when the locking screw 30 is clockwise rotated so that the wire frame 20 drives the second wire connecting part 50 to move upward, and the upper surface of the second wire connecting part 50 is pressed against the lower surface of the first wire connecting part 40, at this time, the wire frame 20 is in the wire pressing position and makes the first wire connecting part 40 and the second wire connecting part 50 fully electrically contact.

[0072] Meanwhile, in the above embodiment, when the wire frame 20 is in any position between the wire connecting position and the wire pressing position, the distance between the first wire connecting part 40 and the fixed sleeve 10 remains unchanged, since the position of the fixed sleeve 10 is fixed, the position of the first wire connecting part 40 is also fixed, that is, when the wire frame 20 is in the wire connecting position or the wire pressing position by rotating the locking screw 30, only the locking screw 30 needs to be rotated without applying pressure to the first wire connecting part 40 by the locking screw 30 to make it contact with the second wire connecting part 50, thereby avoiding the bending or shaking phenomenon of the first wire connecting part 40, which is beneficial to prevent the bending deformation of the first wire connecting part 40 in the process of electrical connection, thereby reducing the service life of the electrical equipment.

[0073] In some embodiments of the present application, reference is made to Figure 2 and Figure 3, the distance between the first wiring component 40 and the fixing sleeve 10 is less than or equal to the length of the locking screw 30. Preferably, the distance between the first wiring component 40 and the fixing sleeve 10 is less than the length of the locking screw 30, that is, the locking screw 30 can be partially embedded in the fixing sleeve 10, for example, the head of the locking screw 30 can be partially embedded in the through hole 11 and abut against the inner wall of the through hole 11, so as to limit the rotation movement of the locking screw 30 through the through hole 11, and prevent the locking screw 30 from being deviated during the rotation process; or, the lower part of the locking screw 30 can be partially embedded on the first wiring component 40, for example, a circular groove is arranged on the first wiring component 40, and the lower part of the locking screw 30 is matched in the circular groove, so as to limit the rotation movement of the locking screw 30 through the circular groove.

[0074] In some embodiments of the present application, referring back to Figure 2 and Figure 3 , the wiring frame 20 is conductive, and the fixing sleeve 10 is insulating. When the wiring frame 20 is in the crimping position, one side of the first wiring component 40 is in contact with the locking screw 30, and the other side is in contact with the second wiring component 50, and the side of the second wiring component 50 away from the first wiring component 40 is in contact with the inner wall of the wiring frame 20.

[0075] It should be noted that, since the wiring terminal structure comprises the fixing sleeve 10, the fixing sleeve 10 is insulating, which can ensure the insulation performance of the wiring terminal structure and avoid the phenomenon of electric shock, and also make the wiring frame 20 conductive, which not only can generate current between the first wiring component 40 and the second wiring component 50, but also can transmit the current from the second wiring component 50 to the first wiring component 40 through the wiring frame 20, which is conducive to enhancing the electrical connection between the first wiring component 40 and the second wiring component 50, avoiding the phenomenon that the electrical connection between the first wiring component 40 and the second wiring component 50 is poor, which makes the overall temperature of the electrical equipment rise too high, and even directly causes the electrical equipment to burn.

[0076] In some embodiments of the present application, referring back to Figure 2 and Figure 3 , the width d1 of the first wiring component 40 is equal to the inner width d2 of the wiring frame 20, that is, the two sides of the first wiring component 40 are in contact with the two inner walls of the wiring frame 20. In combination with the embodiment that the side of the second wiring component 50 away from the first wiring component 40 is in contact with the inner wall of the wiring frame 20, at this time, the upper surface of the first wiring component 40 is in electrical contact with the locking screw 30, the lower surface is in electrical contact with the second wiring component 50, and the left and right side surfaces are in electrical contact with the two inner walls of the wiring frame 20, so the current flowing into the second wiring component 50 can flow into the first wiring component 40 through the four side surfaces of the first wiring component 40, thereby further enhancing the electrical connection between the first wiring component 40 and the second wiring component 50.

[0077] It can be understood that the first wiring member 40 has a rectangular cross-sectional shape, so that the current can flow from the four peripheral conductive contact surfaces of the first wiring member 40. In addition, the first wiring member 40 can have a circular cross-sectional shape, a regular hexagonal cross-sectional shape, or the like.

[0078] In some embodiments of the present application, referring to Figure 4 , Figure 4 Another structural schematic diagram of the wiring terminal structure in the embodiments of the present application is shown, wherein the locking screw 30 has a screw rod portion 31 and a screw head portion 32, the screw rod portion 31 is partially screwed into the threaded hole 21, and the screw head portion 32 is at least partially embedded in the through hole 11. The minimum diameter D1 of the through hole 11 is smaller than the maximum diameter D2 of the screw head portion 32.

[0079] Specifically, since the screw head portion 32 is embedded in the through hole 11, the through hole 11 can limit the rotational movement of the locking screw 30, avoiding the phenomenon of deviation of the locking screw 30. At the same time, since the minimum diameter D1 of the through hole 11 is smaller than the maximum diameter D2 of the screw head portion 32, it can be ensured that the locking screw 30 is tightly pressed against the fixing sleeve 10, avoiding the phenomenon that the screw head portion 32 of the locking screw 30 completely penetrates the through hole 11.

[0080] It can be understood that for some embodiments of the present application, for example, for the embodiment in which the locking screw 30 is a jacking screw, the locking screw 30 can only include the screw rod portion 31, and the end of the screw rod portion 31 away from the wiring frame 20 is tightly pressed against the through hole 11.

[0081] In some embodiments of the present application, the diameter of the screw head portion 32 can remain unchanged, and the diameter of the through hole 11 gradually decreases in the direction away from the locking screw 30, so as to tightly press the screw head portion 32 with a fixed diameter in the through hole 11.

[0082] In some embodiments of the present application, the diameter of the through hole 11 can remain unchanged, and the diameter of the screw head portion 32 gradually decreases in the direction away from the wiring frame 20, so that the smaller part of the screw head portion 32 can be embedded in the through hole 11, thereby tightly pressing the screw head portion 32 in the through hole 11.

[0083] It can be understood that, as Figure 4 shown, the diameter of the through hole 11 can gradually decrease in the direction away from the locking screw 30, and the diameter of the screw head portion 32 gradually decreases in the direction away from the wiring frame 20, so that the screw head portion 32 is substantially completely fitted and tightly pressed in the through hole 11.

[0084] In some embodiments of the present application, continuing to refer to Figure 4The outer wall surface of the screw head 32 at least partially matches the inner wall surface of the through hole 11, and the minimum diameter D1 of the through hole 11 is greater than or equal to the minimum diameter D3 of the screw head 32.

[0085] It should be noted that, since the screw head 32 of the locking screw 30 matches the through hole 11, and the screw rod 31 of the locking screw 30 matches the threaded hole 21, the upper and lower ends of the locking screw 30 are stable, and the stability of the locking screw 30 during rotation can be ensured. In addition, when the minimum diameter D1 of the through hole 11 is equal to the minimum diameter D3 of the screw head 32, the surface of the screw head 32 is almost flush with the surface of the fixed sleeve 10, and when the minimum diameter D1 of the through hole 11 is greater than the minimum diameter D3 of the screw head 32, the surface of the screw head 32 will be slightly higher than the surface of the fixed sleeve 10. The above two modes can expose the structure (such as a cross slot) on the surface of the screw head 32, so that the rotating tool (such as a screwdriver, a wrench, etc.) or the automatic tool matches the structure (such as a cross slot) on the surface of the screw head 32, thereby facilitating the rotation of the locking screw 30.

[0086] It can be understood that the minimum diameter D1 of the through hole 11 can also be slightly smaller than the minimum diameter D3 of the screw head 32, so that the surface of the screw head 32 is slightly lower than the surface of the fixed sleeve 10. Alternatively, referring to Figure 5 , Figure 5 Another structure of the wiring terminal structure in the embodiment of the application is shown, wherein the maximum diameter of the through hole 11 can also be smaller than the minimum diameter D3 of the screw head 32, so that the screw head 32 directly abuts against the lower surface of the fixed sleeve 10.

[0087] Further, in order to better implement the wiring terminal structure in the embodiment of the application, based on the wiring terminal structure, the application further provides an electric energy meter, referring to Figure 6 and Figure 7 , Figure 6 A kind of assembly schematic diagram of electric energy meter in the embodiment of the application is shown, Figure 7 A kind of explosion schematic diagram of electric energy meter in the embodiment of the application is shown, wherein the electric energy meter includes:

[0088] Bottom shell 60, bottom shell is equipped with multiple wiring holes 61, and the inside of bottom shell has multiple wiring guide slots 62, and wiring guide slot 62 corresponds to wiring hole 61 one by one;

[0089] As the wiring terminal structure of any embodiment of claim, wiring frame 20 is installed in wiring guide slot 62 and can move along wiring guide slot 62, and fixed sleeve 10 and bottom shell 60 are detachably connected.

[0090] Specifically, the bottom shell 60 is used to mount electrical components inside the electric energy meter, for example, the bottom shell 60 can mount a mutual inductor and a circuit board. Among them, the wiring hole 61 on the bottom shell 60 can facilitate the insertion of the second electrical connection component into the electric energy meter, and the wiring guide groove 62 on the bottom shell 60 can limit the movement of the wiring frame 20 along the axis direction of the threaded hole 21, so that after the second electrical connection component is inserted into the wiring frame 20 through the wiring hole 61, the first wiring component 40 and the second wiring component 50 are in full electrical contact by moving the wiring frame 20.

[0091] In the embodiments of the present application, by arranging the first wiring component 40 and the second wiring component 50 in the wiring frame 20, since the locking screw 30 is mounted in the threaded hole 21 of the wiring frame 20, and the through hole 11 opposite to the locking screw 30 is arranged on the fixing sleeve 10, when the locking screw 30 is rotated through the through hole 11, the wiring frame 20 can move in the wiring guide groove 62, the first wiring component 40 abuts on one end of the locking screw 30 and remains stationary, and the second wiring component 50 will eventually abut on the side of the first wiring component 40 away from the locking screw 30 by moving the wiring frame 20, so that the first wiring component 40 and the second wiring component 50 are in contact and conductive connection. Since the actual locking object during the locking process is the wiring frame 20, it can be adapted to power lines of different diameters and ensure the electrical connectivity of the wiring terminal structure.

[0092] In some embodiments of the present application, continuing to refer to Figure 8 and Figure 9 , Figure 8 a top view of the electric energy meter in the embodiments of the present application is shown, Figure 9 a sectional view of the A-A in the embodiments of the present application is shown, Figure 8 wherein the bottom shell 60 has a plurality of guide walls 63 inside, and every two guide walls 63 are respectively located on the two sides of the corresponding wiring hole 61, so as to jointly define the wiring guide groove 62 at the wiring hole 61 through the adjacent guide walls 63.

[0093] In some embodiments of the present application, continuing to refer to Figure 9 and Figure 10 , Figure 10 a structural schematic view of the fixing sleeve 10 in the embodiments of the present application is shown, wherein the side of the guide wall 63 away from the wiring guide groove 62 is provided with a clamping block 631, and the side of the fixing sleeve 10 facing the bottom shell 60 is provided with a buckle 12, the side of the fixing sleeve 10 facing the bottom shell 60 abuts on the guide wall 63, and the buckle 12 is engaged with the clamping block 631, so as to detachably fix the fixing sleeve 10 on the bottom shell 60.

[0094] It can be understood that the fixing sleeve 10 can also be detachably mounted on the bottom shell 60 by other connection modes, for example, screw connection.

[0095] In some embodiments of the present application, referring to Figure 10 The fixing sleeve 10 is further provided with a dismounting groove 121. After a rod-shaped structure (for example, a flat screwdriver) is inserted into the dismounting groove 121, the buckle 12 can be pried open, so that the buckle 12 is separated from the clamping block 631, thereby facilitating the dismounting of the fixing sleeve 10 through the dismounting groove 121.

[0096] Further, in some embodiments of the present application, referring to Figure 9 and Figure 10 The fixing sleeve 10 is further provided with a plurality of guide columns 13 on the side facing the bottom shell 60. The bottom shell 60 is internally provided with a plurality of guide holes 64. The guide columns 13 and the guide holes 64 correspond to each other, and the guide columns 13 and the guide holes 64 are matched. During the installation of the fixing sleeve 10, the guide columns 13 on the fixing sleeve 10 can be inserted into the guide holes 64, so that the fixing sleeve 10 moves along the extension direction of the guide holes 64. Then, the buckle 12 of the fixing sleeve 10 is clamped with the clamping block 631 on the guide wall 63, so that the buckle 12 and the clamping block 631 are clamped before the buckle 12 and the clamping block 631 are clamped, thereby achieving the purpose of pre-fixing the fixing sleeve 10.

[0097] In the above embodiments, the description of each embodiment has its own focus. The parts not described in detail in a certain embodiment can be seen from the detailed description of other embodiments above, and will not be described here.

[0098] The above has described the basic concept. Obviously, for those skilled in the art, the above detailed disclosure is only used as an example, and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0099] Meanwhile, specific words are used in the present application to describe the embodiments of the present application. As "one embodiment", "an embodiment", and / or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "one alternative embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be properly combined.

[0100] For simplicity of the descriptions of the present disclosure and to aid in the understanding of one or more inventive embodiments, the foregoing description of embodiments of the application may sometimes refer to a plurality of features in connection with an individual embodiment, figure, or description of an embodiment. However, this description does not imply that the application requires more features than those explicitly mentioned in the claims. In fact, an embodiment of the application can include fewer features than are described in the foregoing disclosure.

[0101] Some embodiments use numerical values to describe components, quantities of attributes. It should be understood that such numerical values used in the description of embodiments are in some examples modified by the terms "about", "approximately", or "generally". Unless otherwise stated, "about", "approximately", or "generally" indicate that the described value allows for a variation of ±20%. Accordingly, numerical values used in the specification and claims of some embodiments are approximations. Variation in these values is a result of reasonable measurement precision and variation in the individual embodiments to which the embodiments are applied. In some embodiments, numerical values should be considered to be defined with the specified degree of precision and using the normal rounding techniques of the art. Although the numerical ranges and parameters setting forth the broadest scope of some embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. The numerical values set forth in the specific examples are provided to be as precise as reasonably possible. However, some variations may occur depending on the standard variation and applicable rule of each relevant art.

[0102] Each patent, patent application, patent publication, and other material, such as articles, books, specifications, publications, documents, and the like, referenced herein are hereby incorporated by reference in their entirety for the teachings relevant to the sentence and / or paragraph in which the reference is made. Discrepancies between art- incorporated descriptions, definitions, and / or terminology and that in the present application are intended to be resolved in favor of the description, definitions, and / or terminology in the present application. Any material, if any, that is not consistent between the present application and the incorporated material, including any material that limits the broadest scope of the claims of the present application, is hereby superseded by the description, definitions, and / or terminology in the present application.

[0103] The above describes in detail the wiring terminal structure and the electric energy meter provided by the embodiments of the present application. The principles and implementation manners of the present application are described by using specific examples. The above embodiment descriptions are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In summary, the content of the present application should not be understood as a limitation.

Claims

1. A terminal structure characterized by comprising: Comprising: a fixing sleeve (10); a terminal frame (20) having a threaded hole (21) and being movable along the axis of the threaded hole (21); a locking screw (30) screwed in the threaded hole (21) to drive the terminal frame (20) to move along the axis of the threaded hole (21); a first terminal component (40) and a second terminal component (50) at least partially located in the terminal frame (20); wherein one end of the locking screw (30) passes through the threaded hole (21) and abuts against the first terminal component (40), and the other end abuts against the fixing sleeve (10) having a through hole (11) opposite to the locking screw (30); the terminal frame (20) has a terminal position and a pressing position; when the terminal frame (20) is at the terminal position, the second terminal component (50) and the first terminal component (40) are separated from each other in the terminal frame (20); when the terminal frame (20) is at the pressing position, the second terminal component (50) and the first terminal component (40) abut against each other in the terminal frame (20); when the terminal frame (20) is at any position between the terminal position and the pressing position, the distance between the first terminal component (40) and the fixing sleeve (10) remains unchanged.

2. The terminal structure of claim 1, wherein the terminal frame (20) is conductive, and the fixing sleeve (10) is insulating; when the terminal frame (20) is at the pressing position, one side of the first terminal component (40) is in contact with the locking screw (30), and the other side is in contact with the second terminal component (50), and the side of the second terminal component (50) away from the first terminal component (40) is in contact with the inner wall of the terminal frame (20); the distance between the first terminal component (40) and the fixing sleeve (10) is less than or equal to the length of the locking screw (30), and the width of the first terminal component (40) is equal to the inner width of the terminal frame (20).

3. The terminal structure of claim 1, wherein the locking screw (30) has a screw rod part (31) and a screw head part (32); the screw rod part (31) is partially screwed in the threaded hole (21), and the screw head part (32) is at least partially embedded in the through hole (11), and the minimum diameter of the through hole (11) is less than the maximum diameter of the screw head part (32).

4. The terminal structure of claim 3 wherein, the diameter of the through hole (11) gradually decreases in the direction away from the locking screw (30); and / or the diameter of the screw head part (32) gradually decreases in the direction away from the terminal frame (20).

5. The terminal structure of claim 3 wherein, the outer wall of the screw head part (32) at least partially matches the inner wall of the through hole (11); the minimum diameter of the through hole (11) is greater than or equal to the minimum diameter of the screw head part (32).

6. An electric energy meter, characterized by Comprising: A bottom shell (60) is provided with a plurality of wire holes (61), and a plurality of wire guide slots (62) are formed inside the bottom shell (60) and correspond to the wire holes (61) one by one; The wire frame (20) is mounted in the wire guide slot (62) and is movable along the wire guide slot (62), and the fixing sleeve (10) is detachably connected with the bottom shell (60).

7. The electric energy meter of claim 6, wherein, The bottom shell (60) is internally provided with a plurality of guide walls (63), and adjacent guide walls (63) jointly define the wire guide slot (62) at the wire hole (61).

8. The electric energy meter of claim 7, wherein, The side of the guide wall (63) away from the wire guide slot (62) is provided with a clamping block (631), and the side of the fixing sleeve (10) facing the bottom shell (60) is provided with a buckle (12). The side of the fixing sleeve (10) facing the bottom shell (60) is abutted against the guide wall (63), and the buckle (12) is clamped with the clamping block (631).

9. The electric energy meter of claim 8, wherein, The side of the fixing sleeve (10) facing the bottom shell (60) is further provided with a plurality of guide columns (13), and the bottom shell (60) is internally provided with a plurality of guide holes (64); The guide column (13) corresponds to the guide hole (64) one by one, and the guide column (13) cooperates with the guide hole (64).

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