Voltage transformer for electric energy meter

Abstract

The utility model discloses a voltage transformer for an electric energy meter, which belongs to the technical field of voltage transformers and comprises a voltage transformer body, wiring assemblies are arranged on two sides of the top of the voltage transformer body, and end covers are arranged on the top of the voltage transformer body and outside the wiring assemblies. Through the arrangement of the wiring assembly, an electric energy meter wiring harness can be connected with the voltage transformer body, after wiring is completed, a user can install the end cover, and at the moment, the wiring harness positioning assembly at the bottom of the end cover can abut against and position the wiring harness, so that the problem that the wiring harness loosens and even falls off in the using process is solved; and the end cover in the device can be stably mounted at the top of the voltage transformer body through cooperative use of the auxiliary positioning assembly and the first clamping assembly, and is used for protecting the joint between the wire harness and the voltage transformer body, so that the problem that the wire harness is loosened and even falls off due to interference of external force is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to a voltage transformer for an electric energy meter. Background Technique

[0002] The purpose of a voltage transformer to transform voltage is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power and electric energy of a line, or to protect valuable equipment, motors and transformers in the line when a line fault occurs. Therefore, the capacity of a voltage transformer is very small, generally only a few volt-amperes or dozens of volt-amperes, and the maximum does not exceed one thousand volt-amperes.

[0003] At present, for the voltage transformers used in electric energy meters on the market, the wire harness connections mostly use bolt fixation, which is prone to looseness or even detachment during long-term use, affecting the normal use of the equipment. Therefore, we need to propose a voltage transformer for an electric energy meter. Content of the Utility Model

[0004] The purpose of the utility model is to provide a voltage transformer for an electric energy meter, which has the advantage of being able to assist in positioning the wire harness connected to the voltage transformer, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides a voltage transformer for an electric energy meter, including a voltage transformer body. On both sides of the top of the voltage transformer body, wiring components are provided. At the top of the voltage transformer body and outside the wiring components, an end cover is provided. At the bottom of the end cover and corresponding to the wiring components, a wire harness positioning component for preventing the wire harness from loosening or detaching is provided. The end cover is fixedly installed on the top of the voltage transformer body through a first clamping component. On both sides of the top of the end cover, decorative covers are provided. The decorative covers are clamped and fixed on the top of the end cover through a second clamping component.

[0006] Preferably, the wiring component includes wiring frames fixedly installed on both sides of the top of the voltage transformer body. A locking tube is threadedly connected to the top of the wiring frame. The top of the locking tube is threadedly connected to a locking rod. The bottom end of the locking rod sequentially penetrates through the locking tube and the wiring frame and extends into the inner cavity of the wiring frame.

[0007] Preferably, the wire harness positioning component includes a positioning block arranged below the end cover. A positioning groove adapted to the wire harness is opened at the bottom of the positioning block. Compression springs are fixedly installed at the four corners of the top of the positioning block. The top ends of the compression springs are fixedly connected to the inner wall of the end cover. A guiding component for improving the moving stability of the positioning block is also provided between the positioning block and the end cover.

[0008] Preferably, the guiding assembly includes guiding rods fixedly installed at the four corners of the top of the positioning block. The compression springs are sleeved outside the guiding rods. A guiding hole corresponding to the guiding rod is formed at the top of the end cover, and the surface of the guiding rod is slidably connected to the inner wall of the guiding hole.

[0009] Preferably, a limiting plate is arranged above the end cover and at the corresponding position of the guiding rod. The top end of the guiding rod penetrates through the guiding hole and extends above the end cover to be fixedly connected to the bottom of the limiting plate.

[0010] Preferably, the end cover is arranged in a "concave" shape, and an auxiliary positioning assembly connected to the voltage transformer body is arranged at the concave part of the end cover.

[0011] Preferably, the auxiliary positioning assembly includes a threaded rod fixedly installed at the center of the top of the voltage transformer body. The top end of the threaded rod penetrates through the end cover and extends outside the end cover to be threadedly connected with a locking nut, and the bottom of the locking nut is attached to the concave part of the end cover.

[0012] Preferably, the first clamping assembly includes first elastic buckles fixedly installed on both sides of the bottom of the end cover. First clamping grooves corresponding to the first elastic buckles are formed at the top of both sides of the voltage transformer body, and the clamping ends of the first elastic buckles are clamped to the inner wall of the first clamping grooves.

[0013] Preferably, the second clamping assembly includes second elastic buckles fixedly installed on both sides of the bottom of the decorative cover. Second clamping grooves corresponding to the second elastic buckles are formed at the top of the end cover, and the clamping ends of the second elastic buckles are clamped to the inner wall of the second clamping grooves.

[0014] Preferably, insertion grooves are formed on both sides of the end cover, and the insertion grooves are arranged corresponding to the positioning grooves.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] Through the arrangement of the wiring assembly, the present utility model can connect the wire harness of the electric energy meter to the voltage transformer body. After the wiring is completed, the user can install the end cover. At this time, the wire harness positioning assembly at the bottom of the end cover will tightly position the wire harness to prevent the wire harness from loosening or even falling off during use. Moreover, in this device, the end cover can be stably installed on the top of the voltage transformer body through the cooperation of the auxiliary positioning assembly and the first clamping assembly to protect the connection between the wire harness and the voltage transformer body and prevent the wire harness from loosening or even falling off due to external force interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the wiring assembly of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the second clamping assembly of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the wire harness positioning assembly of the present utility model.

[0021] In the figure: 1, the main body of the voltage transformer; 2, the end cover; 3, the decorative cover; 4, the wiring rack; 5, the locking tube; 6, the locking rod; 7, the positioning block; 8, the positioning groove; 9, the compression spring; 10, the guide rod; 11, the guide hole; 12, the limiting plate; 13, the threaded rod; 14, the locking nut; 15, the first elastic buckle; 16, the first card slot; 17, the second elastic buckle; 18, the second card slot; 19, the insertion slot. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a voltage transformer for an electric energy meter, including the main body 1 of the voltage transformer. On both sides of the top of the main body 1 of the voltage transformer, a wiring assembly is provided. The wiring assembly includes a wiring rack 4 fixedly installed on both sides of the top of the main body 1 of the voltage transformer. The top of the wiring rack 4 is threadedly connected with a locking tube 5. The top end of the locking tube 5 is threadedly connected with a locking rod 6. The bottom end of the locking rod 6 sequentially passes through the locking tube 5 and the wiring rack 4 and extends into the inner cavity of the wiring rack 4.

[0024] Through the setting of the wiring assembly, one end of the wire harness connected to the electric energy meter can be connected to the main body 1 of the voltage transformer. When connecting the wire harness, the user can insert one end of the wire harness into the inner cavity of the wiring rack 4, and then the user can tighten the locking rod 6. The rotation of the locking rod 6 will cause its bottom end to sequentially pass through the locking tube 5 and the wiring rack 4 and extend into the inner cavity of the wiring rack 4 to abut against one end of the wire harness, thereby installing and fixing one end of the wire harness on the top of the main body 1 of the voltage transformer.

[0025] Preferably, a end cover 2 is provided at the top of the voltage transformer body 1 and outside the wiring assembly. The end cover 2 is arranged in a "concave" shape, and an auxiliary positioning assembly connected to the voltage transformer body 1 is arranged at the concave part of the end cover 2. The auxiliary positioning assembly includes a threaded rod 13 fixedly installed at the center of the top of the voltage transformer body 1. The top end of the threaded rod 13 penetrates through the end cover 2 and extends to the outside of the end cover 2, and is threadedly connected with a locking nut 14. The bottom of the locking nut 14 fits against the concave part of the end cover 2. The end cover 2 is fixedly installed at the top of the voltage transformer body 1 through a first clamping assembly. The first clamping assembly includes first elastic buckles 15 fixedly installed on both sides of the bottom of the end cover 2. First clamping grooves 16 corresponding to the first elastic buckles 15 are formed at the top of both sides of the voltage transformer body. The clamping ends of the first elastic buckles 15 are clamped with the inner walls of the first clamping grooves 16.

[0026] Through the setting of the end cover 2, the connection part of the wire harness and the wiring assembly can be protected to prevent the wire harness from loosening or falling off from the top of the voltage transformer body 1 due to external interference, and it can also prevent the user from accidentally touching the connection part of the wire harness and the wiring assembly and causing an electric shock risk. When installing the end cover 2, the user can tighten the end cover 2 on the top of the voltage transformer body 1. At this time, the clamping ends of the first elastic buckles 15 on both sides of the bottom of the end cover 2 will snap into the inner cavity of the first clamping grooves 16, thereby clamping and fixing the end cover 2 on the top of the voltage transformer body 1.

[0027] When the end cover 2 is clamped and fixed on the top of the voltage transformer body 1, the threaded rod 13 on the top of the voltage transformer body 1 will pass through the end cover 2 and extend to the outside of the end cover 2. The user can tighten the locking nut 14 on the top end of the threaded rod 13, thereby further fixing the end cover 2 on the top of the voltage transformer body 1. Through the combined use of the auxiliary positioning assembly and the first clamping assembly, the end cover 2 can be stably installed on the top of the voltage transformer body 1.

[0028] Among them, a wire harness positioning assembly for preventing the wire harness from loosening or falling off is arranged at the bottom of the end cover 2 and at the corresponding position of the wiring assembly. The wire harness positioning assembly includes a positioning block 7 arranged below the end cover 2. A positioning groove 8 adapted to the wire harness is formed at the bottom of the positioning block 7. Compression springs 9 are fixedly installed at the four corners of the top of the positioning block 7. The top ends of the compression springs 9 are fixedly connected to the inner wall of the end cover 2.

[0029] By setting the wire harness positioning assembly, when the end cover 2 is installed and fixed on the top of the voltage transformer body 1, the positioning groove 8 will be stuck on the surface of the wire harness, and as the end cover 2 moves downward, the positioning block 7 will be pressed against the surface of the wire harness, and under the reaction force of the voltage transformer body 1, the positioning block 7 will squeeze the compression spring 9 upward, and the reaction force generated by the contraction of the compression spring 9 will act on the positioning block 7, pressing the positioning block 7 tightly and fixing it on the top of the voltage transformer body 1, so as to further position the wire harness tightly and prevent the connection between the wire harness and the wiring assembly from loosening or even falling off due to external personnel pulling the wire harness.

[0030] In addition, both sides of the end cover 2 are provided with a through slot 19, and the through slot 19 is arranged corresponding to the positioning slot 8. Through the setting of the through slot 19, a space for the wiring harness to be inserted can be provided. When the end cover 2 is installed after one end of the wiring harness is connected to the wiring assembly, the bottom of the end cover 2 will not be unable to fit tightly with the top of the voltage transformer body 1 due to the presence of the wiring harness.

[0031] It is worth noting that a guide assembly for improving the moving stability of the positioning block 7 is also provided between the positioning block 7 and the end cover 2. The guide assembly includes guide rods 10 fixedly installed at the four corners of the top of the positioning block 7, and the compression spring 9 is sleeved on the outside of the guide rods 10. A guide hole 11 corresponding to the guide rod 10 is provided on the top of the end cover 2, and the surface of the guide rod 10 is slidably connected to the inner wall of the guide hole 11. A limit plate 12 is provided above the end cover 2 and at the corresponding position of the guide rod 10. The top end of the guide rod 10 passes through the guide hole 11 and extends to the top of the end cover 2 and is fixedly connected to the bottom of the limit plate 12.

[0032] By setting the guide component, the stability of the movement of the positioning block 7 can be improved. When the positioning block 7 is pushed by the upward reaction force of the voltage transformer body 1, the guide rod 10 will be driven to slide in the inner cavity of the guide hole 11, thereby improving the stability of the movement of the positioning block 7. In this embodiment, the compression spring 9 is sleeved on the surface of the guide rod 10, and the guide rod 10 can play an auxiliary supporting role for the compression spring 9 to prevent it from lateral bending during the compression process. In this embodiment, a limit plate 12 is installed at the top of the guide rod 10, which can limit the guide rod 10 and prevent the guide rod 10 from moving downward too much and causing it to be disconnected from the guide hole 11.

[0033] Furthermore, decorative covers 3 are provided on both sides of the top of the end cover 2, and the decorative cover 3 is fixed to the top of the end cover 2 by a second clamping assembly. The second clamping assembly includes second elastic clips 17 fixedly installed on both sides of the bottom of the decorative cover 3. A second clamping groove 18 is opened at the top of the end cover 2 and at the corresponding position of the second elastic clip 17. The clamping end of the second elastic clip 17 is clamped with the inner wall of the second clamping groove 18.

[0034] In this embodiment, a decorative cover 3 is provided at the top of the end cover 2, which can cover and decorate the top of the guide rod 10 and the limiting plate 12, preventing the top of the guide rod 10 and the limiting plate 12 from being directly exposed to the outside and causing an unsightly problem. When installing the decorative cover 3, the user can press the decorative cover 3 on the top of the end cover 2. When the bottom of the decorative cover 3 fits with the top of the end cover 2, the clamping end of the second elastic buckle 17 will snap into the inner cavity of the second clamping groove 18, so as to realize the purpose of clamping and fixing the decorative cover 3 on the top of the end cover 2.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voltage transformer for an electric energy meter, characterized in that, Including: The voltage transformer body (1); A wiring component arranged on both sides of the top of the voltage transformer body (1). An end cover (2) is arranged on the top of the voltage transformer body (1) and outside the wiring component. A wiring harness positioning component for preventing the wiring harness from loosening or falling off is arranged at the corresponding position of the wiring component at the bottom of the end cover (2); Among them, the end cover (2) is fixedly installed on the top of the voltage transformer body (1) through a first clamping component. Decorative covers (3) are arranged on both sides of the top of the end cover (2), and the decorative covers (3) are clamped and fixed on the top of the end cover (2) through a second clamping component.

2. The voltage transformer for an electric energy meter according to claim 1, characterized in that: The wiring component includes wiring brackets (4) fixedly installed on both sides of the top of the voltage transformer body (1). A locking tube (5) is threadedly connected to the top of the wiring bracket (4). A locking rod (6) is threadedly connected to the top end of the locking tube (5). The bottom end of the locking rod (6) sequentially penetrates through the locking tube (5) and the wiring bracket (4) and extends into the inner cavity of the wiring bracket (4).

3. The voltage transformer for an electric energy meter according to claim 1, characterized in that: The wiring harness positioning component includes a positioning block (7) arranged below the end cover (2). A positioning groove (8) adapted to the wiring harness is opened at the bottom of the positioning block (7). Compression springs (9) are fixedly installed at the four corners of the top of the positioning block (7). The top ends of the compression springs (9) are fixedly connected to the inner wall of the end cover (2). A guiding component for improving the moving stability of the positioning block (7) is further arranged between the positioning block (7) and the end cover (2).

4. The voltage transformer for an electric energy meter according to claim 3, characterized in that: The guiding component includes guiding rods (10) fixedly installed at the four corners of the top of the positioning block (7). The compression springs (9) are sleeved outside the guiding rods (10). Guiding holes (11) corresponding to the guiding rods (10) are opened at the top of the end cover (2). The surface of the guiding rod (10) is slidably connected to the inner wall of the guiding hole (11).

5. A voltage transformer for an electric energy meter according to claim 4, characterized in that: A limiting plate (12) is arranged above the end cover (2) and at the corresponding position of the guiding rod (10). The top end of the guiding rod (10) penetrates through the guiding hole (11) and extends above the end cover (2) and is fixedly connected to the bottom of the limiting plate (12).

6. The voltage transformer for a watt-hour meter according to claim 1, characterized in that: The end cover (2) is arranged in a "concave" shape, and an auxiliary positioning component connected to the voltage transformer body (1) is arranged at the concave part of the end cover (2).

7. A voltage transformer for an electric energy meter according to claim 6, characterized in that: The auxiliary positioning component includes a threaded rod (13) fixedly installed at the center of the top of the voltage transformer body (1). The top end of the threaded rod (13) penetrates through the end cover (2) and extends outside the end cover (2) and is threadedly connected with a locking nut (14). The bottom of the locking nut (14) is attached to the concave part of the end cover (2).

8. A voltage transformer for an electric energy meter according to claim 1, characterized in that: The first clamping component includes first elastic buckles (15) fixedly installed on both sides of the bottom of the end cover (2). First clamping grooves (16) corresponding to the first elastic buckles (15) are opened at the top of both sides of the voltage transformer body. The clamping end of the first elastic buckle (15) is clamped with the inner wall of the first clamping groove (16).

9. A voltage transformer for an electric energy meter according to claim 1, characterized in that: The second clamping component includes second elastic buckles (17) fixedly installed on both sides of the bottom of the decorative cover (3). Second clamping grooves (18) are formed at the top of the end cover (2) corresponding to the second elastic buckles (17), and the clamping ends of the second elastic buckles (17) are clamped with the inner walls of the second clamping grooves (18).

10. A voltage transformer for an electric energy meter according to claim 3, characterized in that: Insertion grooves (19) are formed on both sides of the end cover (2), and the insertion grooves (19) are arranged corresponding to the positioning grooves (8).

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