A guide rail table

Abstract

The present invention discloses a rail meter, aiming to provide a first insulating baffle to separate the relay and the short-circuit copper bar, so as to achieve the insulation isolation of the neutral wire and the live wire. The technical solution is as follows: A rail meter includes an upper shell and a lower shell. At one end inside the lower shell, there is a strong electricity terminal block, and at the other end, there is a weak electricity terminal block. The strong electricity terminal block is provided with 4 mutually isolated terminal slots, and strong electricity terminals are arranged in the terminal slots. Along the length direction of the strong electricity terminal block, the 4 terminal slots are sequentially divided into 2 live wire slots and 2 neutral wire slots. It also includes a relay and a short-circuit copper bar. The output conductive sheet and the input conductive sheet of the relay are respectively inserted into 2 live wire slots and electrically connected to the strong electricity terminals. The two ends of the short-circuit copper bar are respectively inserted into 2 neutral wire slots and electrically connected to the strong electricity terminals. A first insulating baffle is arranged between the relay and the short-circuit copper bar, belonging to the technical field of electric energy meters.

Description

Technical Field

[0001] The present invention belongs to the technical field of electricity meters, and more specifically, relates to a rail-mounted meter. Background Art

[0002] A rail-mounted meter is an electricity meter installed using a rail. It is small in size, convenient to install, and has good reliability, and is suitable for most electricity meter management systems.

[0003] CN210894457U discloses a rail-mounted electricity meter housing, including a lower housing, a conductive plate, a terminal block, and an upper cover. The lower housing has a strong electricity inlet side and a weak electricity outlet side. The weak electricity outlet side has an integral side wall formed integrally with the lower housing. A plurality of terminal slots are formed inside the integral side wall. The terminal block is adapted to be within the terminal slots. An insulating partition is formed between each adjacent two terminal slots. A transverse connecting plate is formed at a position below the insulating partition. A lateral socket of the terminal slot is formed above the transverse connecting plate. An installation post extending longitudinally upward is provided on the bottom plate of the lower housing. The conductive plate is inserted into the terminal block through the lateral socket and is fixedly installed on the installation post by means of screw installation. A lateral inlet communicating with the terminal slot is opened on the outer side surface of the integral side wall.

[0004] In the above rail-mounted electricity meter housing, an insulating partition is provided between the terminal slots, but there is no insulation isolation between the live wire conductive plate and the neutral wire conductive plate, which is likely to generate capacitive current and has potential safety hazards.

[0005] Therefore, the technical problem to be solved by this application is: how to insulate and isolate the live wire conductive plate and the neutral wire conductive plate. Summary of the Invention

[0006] The main object of the present invention is to provide a rail-mounted meter, aiming to provide a first insulating baffle to separate the relay and the short-circuit copper bar, so as to achieve insulation isolation between the neutral wire and the live wire.

[0007] According to a first aspect of the present invention, there is provided a rail-mounted meter, including an upper case and a lower case. At one end inside the lower case, a strong electricity terminal block is provided, and at the other end, a weak electricity terminal block is provided. The strong electricity terminal block has 4 mutually isolated terminal slots, and strong electricity terminals are provided in the terminal slots. Along the length direction of the strong electricity terminal block, the 4 terminal slots are sequentially divided into 2 live wire slots and 2 neutral wire slots. It further includes a relay and a short-circuit copper bar. The output conductive piece and the input conductive piece of the relay are respectively inserted into 2 live wire slots and electrically connected to the strong electricity terminals. The two ends of the short-circuit copper bar are respectively inserted into 2 neutral wire slots and electrically connected to the strong electricity terminals. A first insulating baffle is provided between the relay and the short-circuit copper bar.

[0008] In a specific embodiment of the present invention, a base is provided at the bottom of the high-voltage terminal block, the first insulating baffle is arranged on the base, and the first insulating baffle extends to the high-voltage terminal block to divide the base into two regions, and the relay and the short-circuit copper bar are respectively fixed in the two regions.

[0009] In a specific embodiment of the present invention, a second insulating baffle is provided on the base, and the second insulating baffle extends to the first insulating baffle to enclose the short-circuit copper bar.

[0010] In a specific embodiment of the present invention, the high-voltage terminal block and the relay are both connected to the base by means of buckles.

[0011] In a specific embodiment of the present invention, a current transformer is provided on the output conductive piece of the relay.

[0012] In a specific embodiment of the present invention, locking holes corresponding to the terminal slots are provided at the top of the high-voltage terminal block, an opening is provided on the upper shell, and a lead seal cover for covering the locking holes is provided on the opening.

[0013] In a specific embodiment of the present invention, a main control module is provided in the lower shell, and the high-voltage terminal block and the low-voltage terminal block are respectively connected to the main control module.

[0014] In a specific embodiment of the present invention, a SIM card communication module is provided in the upper shell, an interface for inserting and taking out the SIM card is provided on the upper shell, and the SIM card communication module is connected to the main control module.

[0015] In a specific embodiment of the present invention, an SMA antenna, an infrared receiver and an infrared transmitter are provided on the upper shell, and the SMA antenna, the infrared receiver and the infrared transmitter are respectively connected to the main control module.

[0016] In a specific embodiment of the present invention, a liquid crystal display screen, a plurality of indicator lights and a plurality of buttons are provided on the upper shell, and the liquid crystal display screen, the indicator lights and the buttons are respectively connected to the main control module.

[0017] One of the technical solutions in the above technical solutions of the present invention has at least the following advantages or beneficial effects:

[0018] In actual use, the two live wire slots are respectively used as the live wire input end and the live wire output end, and the relay is used to control the opening and closing of the live wire, while the two neutral wire slots are connected in series through the short-circuit copper bar to keep the neutral wire unobstructed;

[0019] By arranging the first insulating baffle between the short-circuit copper bar and the relay, the present invention avoids the generation of capacitive current between the short-circuit copper bar and the conductive piece of the relay, realizes the insulation isolation between the neutral wire and the live wire, and improves the safety performance of the rail meter. Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the drawings and embodiments;

[0021] Figure 1 is a three-dimensional structure diagram of the first embodiment of the present invention;

[0022] Figure 2 is another three-dimensional structure diagram of the first embodiment of the present invention;

[0023] Figure 3 is a three-dimensional structure diagram of the first embodiment of the present invention with the upper shell removed;

[0024] Figure 4 is a three-dimensional structure diagram of the first embodiment of the present invention with the upper shell, main control module, weak current terminal block and lower shell removed. Detailed Description of the Embodiments

[0025] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0027] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, or a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components, indirect communication or the interaction relationship between two components.

[0030] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0031] Referring to Figures 1 to 4 As shown, in an embodiment of the present invention, a rail meter includes an upper case 1 and a lower case 2. One end inside the lower case 2 is provided with a strong electrical terminal block 3, and the other end is provided with a weak electrical terminal block 4. The strong electrical terminal block 3 is internally provided with 4 mutually isolated terminal slots 31. Strong electrical terminals are provided in the terminal slots 31. Along the length direction of the strong electrical terminal block 3, the 4 terminal slots 31 are sequentially divided into 2 live wire slots and 2 neutral wire slots.

[0032] It further includes a relay 32 and a short-circuit copper bar 33. The output conductive piece and the input conductive piece of the relay 32 are respectively inserted into 2 live wire slots to be electrically connected to the strong electrical terminals. The two ends of the short-circuit copper bar 33 are respectively inserted into 2 neutral wire slots to be electrically connected to the strong electrical terminals. In actual use, the 2 live wire slots are respectively used as the live wire input end and the live wire output end, and the relay 32 is used to control the disconnection and closing of the live wire, while the 2 neutral wire slots are connected in series through the short-circuit copper bar 33 to keep the neutral wire unobstructed.

[0033] The present invention sets a first insulating baffle 34 between the short-circuit copper bar 33 and the relay 32 to avoid capacitive current generation between the conductive pieces of the short-circuit copper bar 33 and the relay 32, realize the insulation isolation between the neutral wire and the live wire, and improve the safety performance of the rail meter.

[0034] In this embodiment, the upper case 1 and the lower case 2 can be snapped together. The bottom of the lower case 2 is provided with a card slot 21 for clamping an external rail, and one side of the card slot 21 is provided with an elastically telescopic pressing block 22 for pressing tightly against the external rail.

[0035] Specifically, a base 35 is provided at the bottom of the high-voltage terminal block 3, and the first insulating baffle 34 is arranged on the base 35. The first insulating baffle 34 extends to the high-voltage terminal block 3 to divide the base 35 into two areas. The relay 32 and the short-circuit copper bar 33 are respectively fixed in the two areas. The volume of the guide rail table is generally small, and the internal space of the lower shell 2 is relatively narrow, which is not conducive to carrying out installation work inside. Therefore, a base 35 is set to facilitate the installation of the short-circuit copper bar 33 and the relay 32. After the short-circuit copper bar 33 and the relay 32 are fixed to the base 35, the high-voltage terminal block 3 is installed in the lower shell 2 together with the base 35.

[0036] Preferably, a second insulating baffle 36 is provided on the base 35 , and the second insulating baffle 36 extends to the first insulating baffle 34 to surround the short-circuit copper bar 33 , so that the short-circuit copper bar 33 is completely surrounded, and has a good insulation shielding effect.

[0037] Preferably, the high-voltage terminal block 3 and the relay 32 are connected to the base 35 by snap-fitting, which is convenient for installation.

[0038] Preferably, a mutual inductor 37 is provided on the output conductive sheet of the relay 32. As a specific manifestation of this embodiment, the mutual inductor 37 is a through-type mutual inductor 37, which is convenient for installation.

[0039] In a specific implementation, the high-voltage terminals in the high-voltage terminal block 3 are first installed, and then the short-circuit copper bar 33 and the relay 32 are installed on the base 35. When installing the relay 32, pay attention to first putting the mutual inductor 37 on the output conductive sheet of the relay 32, and then install the high-voltage terminal block 3 and the base 35 together to form an assembly, and finally install the assembly into the lower shell 2.

[0040] In a specific embodiment of the present invention, a locking hole corresponding to the terminal slot 31 is provided on the top of the high-voltage terminal row 3, and the cable and the high-voltage terminal in the terminal slot 31 are locked together through the locking hole. An opening is provided on the upper shell 1, and the locking hole is exposed through the opening. In order to prevent users from privately connecting or removing wires, a lead sealing cover 11 for covering the locking hole is provided on the opening; the lead sealing cover 11 can be in the form of an upper and lower flip cover or a sliding cover.

[0041] In a specific embodiment of the present invention, a main control module 5 is provided in the lower shell 2, and the high-current terminal block 3 and the low-current terminal block 4 are respectively connected to the main control module 5; the high-current terminal block 3 can supply power to the main control module 5, and the low-current terminal block 4 is used to communicate with the main control module 5 or output low-current.

[0042] It should be noted that a pulse module is provided in the main control module 5, and the output and input of the electrical energy pulse signal can be realized through the weak current terminal block 4; an RS485 communication module is also provided in the main control module 5, and the weak current terminal block 4 can be used as the RS485 communication interface.

[0043] Preferably, a SIM card communication module is provided in the upper shell 1, an interface 12 for inserting and taking out the SIM card is provided on the upper shell 1, and the SIM card communication module is connected to the main control module 5 to realize the data communication function by inserting the SIM card.

[0044] Preferably, an SMA antenna 13, an infrared receiver 14 and an infrared transmitter 15 are provided on the upper shell 1, and the SMA antenna 13, the infrared receiver 14 and the infrared transmitter 15 are respectively connected to the main control module 5;

[0045] A wireless communication module is provided in the main control module 5, and the wireless communication module inputs and outputs signals through the SMA antenna 13;

[0046] An infrared communication module is provided in the main control module 5, and the infrared communication module receives signals through the infrared receiver 14 and sends signals through the infrared transmitter 15.

[0047] In a specific embodiment of the present invention, a liquid crystal display screen 16, several indicator lights 17 and several buttons 18 are provided on the upper shell 1, and the liquid crystal display screen 16, the indicator lights 17 and the buttons 18 are respectively connected to the main control module 5; relevant information is displayed through the liquid crystal display screen 16, and various prompts are made through the indicator lights 17, such as communication networking prompts, alarm prompts and pulse indications, and control instructions are input or the display content of the liquid crystal display screen 16 is switched through the buttons 18.

[0048] 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 principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A guide rail table, comprising an upper shell and a lower shell. One end inside the lower shell is provided with a strong electricity terminal row, and the other end is provided with a weak electricity terminal row. The strong electricity terminal row is internally provided with 4 mutually isolated terminal slots, and strong electricity terminals are arranged in the terminal slots. Along the length direction of the strong electricity terminal row, the 4 terminal slots are sequentially divided into 2 live wire slots and 2 neutral wire slots. It is characterized in that, It also includes a relay and a short - circuit copper bar. The output conductive piece and the input conductive piece of the relay are respectively inserted into two live - wire slots and electrically connected to the high - voltage terminals. The two ends of the short - circuit copper bar are respectively inserted into two neutral - wire slots and electrically connected to the high - voltage terminals. A first insulating baffle is arranged between the relay and the short - circuit copper bar; A base is provided at the bottom of the high - voltage terminal block. The first insulating baffle is arranged on the base. The first insulating baffle extends to the high - voltage terminal block and divides the base into two regions. The relay and the short - circuit copper bar are respectively fixed in the two regions; A second insulating baffle is provided on the base. The second insulating baffle extends to the first insulating baffle and encloses the short - circuit copper bar; A current transformer is provided on the output conductive piece of the relay.

2. The guide rail table according to claim 1, wherein The high - voltage terminal block and the relay are both connected to the base by means of buckles.

3. The guide rail table according to claim 1, characterized in that, Locking holes corresponding to the terminal slots are provided at the top of the high - voltage terminal block. An opening is provided on the upper shell, and a lead - seal cover for covering the locking holes is provided on the opening.

4. The guide rail table according to claim 1, characterized in that, A main control module is provided inside the lower shell. The high - voltage terminal block and the low - voltage terminal block are respectively connected to the main control module.

5. The guide rail table according to claim 4, wherein, A SIM - card communication module is provided inside the upper shell. An interface for inserting and removing the SIM card is provided on the upper shell. The SIM - card communication module is connected to the main control module.

6. The guide rail table according to claim 4, characterized in that An SMA antenna, an infrared receiver, and an infrared transmitter are provided on the upper shell. The SMA antenna, the infrared receiver, and the infrared transmitter are respectively connected to the main control module.

7. The guide rail table according to claim 4, wherein A liquid - crystal display screen, several indicator lights, and several buttons are provided on the upper shell. The liquid - crystal display screen, the indicator lights, and the buttons are respectively connected to the main control module.

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