CN108564779B - Concentrator - Google Patents

Concentrator Download PDF

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Publication number
CN108564779B
CN108564779B CN201810702719.8A CN201810702719A CN108564779B CN 108564779 B CN108564779 B CN 108564779B CN 201810702719 A CN201810702719 A CN 201810702719A CN 108564779 B CN108564779 B CN 108564779B
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CN
China
Prior art keywords
pcb
liquid crystal
concentrator
buckle
side wall
Prior art date
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Active
Application number
CN201810702719.8A
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Chinese (zh)
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CN108564779A (en
Inventor
魏伟
黄健
陈欢
林国庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Sanxing Medical and Electric Co Ltd
Original Assignee
Ningbo Sanxing Medical and Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Ningbo Sanxing Medical and Electric Co Ltd filed Critical Ningbo Sanxing Medical and Electric Co Ltd
Priority to CN201810702719.8A priority Critical patent/CN108564779B/en
Publication of CN108564779A publication Critical patent/CN108564779A/en
Application granted granted Critical
Publication of CN108564779B publication Critical patent/CN108564779B/en
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Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20Instruments transformers
    • H01F38/22Instruments transformers for single phase ac
    • H01F38/28Current transformers
    • H01F38/30Constructions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22Bases, e.g. strip, block, panel
    • H01R9/24Terminal blocks
    • H01R9/2425Structural association with built-in components

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The utility model relates to a concentrator, which comprises a terminal box and a current transformer, wherein a functional terminal is arranged in the terminal box, a second PCB (printed Circuit Board) for concentrating conductive columns of the functional terminal is arranged in the terminal box, the functional terminal is electrically connected with the first PCB through the second PCB, and a protective cover is arranged outside the second PCB; the current transformer is inserted in the terminal box and is positioned on the upper side of the functional terminal, and the current transformer is provided with a second pin and is inserted on the second PCB board through the second pin to be electrically connected with the second PCB board. The installation structure design of the functional terminal prevents the situation of installation errors of the functional terminal, and increases the accuracy of the installation of the functional terminal; the design of the protective cover prevents dust, water and the like from contacting the second PCB and the functional terminals, so that the service life of the protective cover is prolonged; the current transformer is inserted in the terminal box, so that the occupied space of the current transformer is reduced, the installation of the current transformer can be realized without screw fixation, and the contact resistance during screw fixation is reduced.

Description

Concentrator
Technical Field
The present utility model relates to a concentrator.
Background
The concentrator is central management equipment and control equipment of a remote centralized meter reading system, is responsible for the functions of timing reading terminal data, command transmission of the system, data communication, network management, event recording, transverse transmission of data and the like, and is central connection point equipment of a connecting terminal, a computer or communication equipment.
In a number of terminal-intensive areas, typically to reduce communication lines, the terminals are connected to a concentrator, which is then connected to a communication controller of a computer via a high-speed line, and thus the concentrator is also an effective device for sharing lines and improving line utilization.
The concentrator is provided with a terminal box and a PCB board, wherein various elements such as a voltage terminal, a functional terminal, a mutual inductor and the like are arranged in the terminal box, the current concentrator, such as an operation panel of an electricity information concentrator of China patent No. CN201220210623.8 (grant notice No. CN 202662155U), is disclosed, the operation panel of the concentrator comprises a shell, a liquid crystal screen, an indicator lamp, an optical communication port, an RS232 communication port, a USB interface, a SIM card box, a control keyboard, a GPRS module, a carrier module, a main terminal and an auxiliary terminal are arranged on the shell, the main terminal comprises a current terminal and a voltage terminal, the auxiliary terminal comprises a remote signaling terminal, an RS485 II cascade terminal, an RS 485I meter reading terminal and a standby terminal, and although the concentrator is provided with various elements and the arrangement mode of the elements, the reasonable connection mode of the elements and the PCB board is not disclosed, so that the elements are more convenient and quick to install and disorder is prevented.
At present, the installation of a current transformer generally adopts: for example, in chinese patent No. CN201721315865.2 (grant notice No. CN 207318556U), the terminal box assembly of three-phase electric energy meter includes a terminal box, a relay and transformer assembly, 4 voltage connector assemblies and a circuit board; the left side and the right side of the terminal box are respectively provided with a clamping hook and 2 positioning columns, the relay and transformer assembly comprises a relay assembly and 3 current transformers, and each current transformer is provided with 2 connecting pins; each current transformer all is connected with relay assembly electricity, relay assembly, each current transformer, each voltage joint subassembly and circuit board all are connected with the end button box, and trip, 2 reference columns and each connecting needle all are connected with the circuit board, and this patent discloses current transformer's installation, but, current transformer sets up outside the end button box, occupation space is big, and current transformer passes through screw and end button box fixed connection, has increased contact resistance, adopts screw connection easy problem that the screw is not hard up to appear simultaneously, and the reliability is not high. In addition, the problem that the connection error is easy to occur and the connection difficulty is increased is not disclosed; in addition, there is no disclosure that the functional terminal is easily contacted with water, dust, etc., thereby affecting the service life of the functional terminal.
Accordingly, there is a need for further improvements to existing concentrators.
Disclosure of Invention
Aiming at the current state of the art, the utility model provides the concentrator which has reasonable and compact structure, convenient and quick installation and connection of the functional terminal and the current transformer and high reliability.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a concentrator, including end button box and current transformer, be provided with the functional terminal in the end button box, the upside of end button box sets up a PCB board, its characterized in that: a second PCB used for centralizing the conductive columns of the functional terminals is arranged in the terminal box, the functional terminals are electrically connected with the first PCB through the second PCB, and a protective cover is arranged outside the second PCB; the current transformer is inserted in the terminal box and is positioned on the upper side of the functional terminal, and the current transformer is provided with a second pin and is electrically connected with the first PCB through the second pin.
In order to prevent the elastic plate of the protective cover from popping out, the elastic plate is arranged at the lower part of the protective cover, the inner side wall of the end button box is provided with inwards extending guide ribs, and the bottom of the elastic plate abuts against the guide ribs in the assembled state. In this way, the mounting of the protective cover is made more reliable.
In order to facilitate the fixation of the protective cover, one side of the protective cover is in plug-in fit with the end button box, and the other side of the protective cover is fixed on the inner side wall of the end button box through a first buckle structure; or, both sides of the protective cover are clamped and fixed on the end button box.
Further preferably, the elastic plate is located at one side of the protection cover, a first buckle is arranged on the outer side wall of the elastic plate, a protruding block extends outwards on the other outer side wall of the protection cover, and correspondingly, a first buckle hole matched with the first buckle and an insertion hole for inserting the protruding block are formed in the terminal box.
In order to realize the electric connection of the functional terminal and the first PCB, preferably, the second PCB is located below the functional terminal, and the second PCB is provided with a through hole for the conductive column to pass through, the functional terminal is electrically connected with the second PCB through the cooperation of the conductive column and the through hole, and the second PCB is also provided with a pin header electrically connected with the first PCB.
In order to prevent the reverse installation of the current transformer, the terminal box is provided with a containing groove for the current transformer to be inserted therein from top to bottom, the side wall of the containing groove is provided with an opening, one side wall of the current transformer is provided with a rib, and the rib is positioned in the corresponding opening in the assembled state. Thus, the current transformer is accurately installed in the corresponding accommodating groove, and the problem of reverse installation is prevented, so that the installation efficiency is increased.
In order to facilitate the installation of liquid crystal, be provided with the liquid crystal support that has liquid crystal on the first PCB board, one side hook of liquid crystal support is established on the first PCB board, and the opposite side is fixed on the first PCB board through third buckle structure.
In order to facilitate the installation of the liquid crystal support, one side of the liquid crystal support is provided with a hook which extends downwards, the other side of the liquid crystal support is provided with a third buckle, correspondingly, the first PCB is provided with a mounting hole matched with the hook and a second buckle hole matched with the third buckle, and in an assembly completion state, the hook and the third buckle are respectively connected with the corresponding positions of the bottom surface of the PCB in a matching manner. Like this for the liquid crystal support is more firm installs on the PCB board, prevents to appear the liquid crystal support in the use and breaks away from the condition of PCB board.
In order to realize the support to the liquid crystal support, the liquid crystal support has downwardly extending's first reference column, be provided with first support piece on the lateral wall of first reference column, offer the first locating hole that supplies first reference column to pass on the first PCB board, under the assembly completion state, the bottom of first support piece with the surface of first PCB board offsets.
The liquid crystal bracket can be supported more stably while the strength of the hook is increased, the outer side wall of the hook is provided with a reinforcing rib plate, and the bottom of the reinforcing rib plate and the bottom of the first supporting piece are on the same plane.
In order to facilitate the installation of liquid crystal, a first groove for the installation of liquid crystal is formed in the liquid crystal support, the edge of the inner side wall of the first groove is in arc transition, and a gap is formed between the inner side wall of the edge of the first groove and the outer side wall of the edge of the liquid crystal when the liquid crystal is in an assembly completion state. Therefore, when the liquid crystal is prevented from moving, the corners of the liquid crystal are damaged, and the service life of the liquid crystal is influenced.
For the convenience with liquid crystal leading-in, prevent the corner perk of liquid crystal simultaneously, be provided with the guide group of convenience with liquid crystal leading-in on the inside wall of first recess, the guide group is including first guide block and second guide block, first guide block and second guide block set up respectively on two inside walls of one of them corner department of first recess, under the liquid crystal in the assembled state, the lateral wall of liquid crystal offsets with the inside wall that corresponds first guide block and second guide block. Therefore, on one hand, liquid crystal is conveniently led in, and on the other hand, the corners of the liquid crystal are conveniently positioned, so that the corners of the liquid crystal are prevented from being tilted.
In order to increase and prevent high-voltage static, the liquid crystal bottom is provided with low-voltage component, insert on the first PCB board and be equipped with high-voltage component, the upper surface undercut of first recess is formed with the second recess, the bottom surface of second recess evaginates in the bottom surface of first recess, just high-voltage component is located the below of second recess bottom surface. Thus, the creepage distance between the low-voltage element at the bottom of the liquid crystal and the high-voltage element below the liquid crystal support is increased, so that the high-voltage element and the low-voltage element are prevented from being interfered, and the situation that the liquid crystal is not displayed is further prevented.
In order to increase the stability of first PCB board installation, the upper portion of end button box is provided with the second reference column, offer the second locating hole that supplies the second reference column to pass on the first PCB board, first PCB board passes through the cooperation of second locating hole and second reference column and installs on the end button box.
In order to increase the installation steadiness of end button box, end button box sets up on the base of concentrator, be provided with the limiting plate that extends along width direction on the base, under the assembly completion state, the lateral wall of end button box offsets with the inside wall of limiting plate and fixes on the base through the second buckle structure.
In order to increase the fixation of the terminal box, a fourth buckle is arranged on the outer side wall of the terminal box, a third buckle hole matched with the fourth buckle is formed in a position corresponding to the fourth buckle on the base, and the terminal box is fixedly connected with the base through the cooperation of the fourth buckle and the third buckle hole.
In order to realize the fixed of first PCB board, be provided with the second buckle on the inside wall of base, offered on the first PCB board with second buckle matched with draw-in groove, be provided with the supporting shoe that is used for supporting first PCB board on the inside wall of base, the supporting shoe is located the lower part of second buckle, under the assembly completion state, first PCB board is located between second buckle and the supporting shoe.
In order to increase the intensity of base, the shaping has the reinforcing plate on the inside wall of base, second buckle and supporting shoe all set up the upper portion at the reinforcing plate inside wall. Thus, the strength of the base is increased while the fixed mounting of the first PCB is realized.
Compared with the prior art, the utility model has the advantages that: the second PCB used for centralizing the conductive columns of the functional terminals is arranged in the terminal box of the concentrator, so that the subsequent electric connection with the first PCB is facilitated, the connection of the functional terminals is more convenient, the installation efficiency is improved, the situation that the functional terminals are installed in error is prevented, and the accuracy of the installation of the functional terminals is improved; the protective cover is arranged outside the second PCB, so that dust, water and the like are prevented from contacting the second PCB and the functional terminals, the service lives of the second PCB and the functional terminals are prolonged, and the reliability is high; the current transformer is inserted in the terminal box, namely, the current transformer is arranged in the terminal box, so that the occupied space of the current transformer in the concentrator is reduced, the space utilization rate of the concentrator is increased, in addition, the current transformer can be installed without screw fixation, the installation is quick, the contact resistance of screw fixation is reduced, and the structural design is more reasonable and compact.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an exploded perspective view of an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of FIG. 2 at another angle;
fig. 4 is a schematic view of the structure of the terminal box (with voltage terminals and functional terminals installed) according to the embodiment of the present utility model;
FIG. 5 is a schematic view of an end box according to an embodiment of the present utility model;
FIG. 6 is a schematic view of an exploded view of an end box according to an embodiment of the present utility model;
FIG. 7 is a schematic perspective exploded view of a portion of the structure of FIG. 2;
FIG. 8 is a schematic view of a portion of a structure of an embodiment of the present utility model;
FIG. 9 is a schematic view of the exploded perspective of FIG. 8;
FIG. 10 is a schematic view of a portion of the structure of FIG. 8;
FIG. 11 is a schematic view of the exploded perspective view of FIG. 10;
FIG. 12 is a schematic view showing a structure of a liquid crystal display bracket according to an embodiment of the present utility model;
FIG. 13 is a schematic view of the structure of FIG. 12 at another angle;
fig. 14 is a schematic view of another angle of fig. 13.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 14, a concentrator of an embodiment of the present utility model includes a base 1, a terminal box 3 provided on the base 1, and a current transformer 30, a functional terminal 32 and a voltage terminal 31 are provided in the terminal box 3, wherein,
the upside of terminal box 3 sets up first PCB board 2, be provided with in the terminal box 3 to be used for concentrating the second PCB board 34 of the conductive post 321 of function terminal 32, function terminal 32 is connected with first PCB board 2 electricity through second PCB board 34, specifically, function terminal 32 has downwardly extending conductive post 321, offer the perforation 342 that supplies conductive post 321 to pass on the second PCB board 34, function terminal 32 realizes being connected with the electricity of second PCB board 34 through the cooperation of conductive post 321 and perforation 342, still be equipped with the row needle 341 of being connected with first PCB board 2 electricity on the second PCB board 34. In addition, the second PCB 34 is detachably connected with a protective cover 35, the terminal box 3 is provided with a cover plate 38 that is matched with the protective cover 35, the second PCB 34 and the functional terminal 32 are located in the space of the protective cover 35, and the cover plate 38 is provided with a through hole 381 through which the pin 3411 of the pin 341 passes.
In this embodiment, the lower portion of the protective cover 35 is provided with an elastic plate 36, and the inner side wall of the terminal box 3 is provided with a guide rib 37 extending inward, and in the assembled state, the bottom of the elastic plate 36 abuts against the guide rib 37. In order to realize the installation of the protection cover and the terminal box, one side of the protection cover 35 is in plug-in fit with the terminal box 3, and the other side of the protection cover is fixed on the inner side wall of the terminal box 3 through a first fastening structure; . Specifically, the elastic plate 36 is located at one side of the protection cover 35, a first buckle 351 is disposed on an outer side wall of the elastic plate 36, a protrusion 352 extends outwards on an outer side wall of the protection cover 35, correspondingly, a first buckle hole 300 matched with the first buckle 351 and an insertion hole 305 for inserting the protrusion 352 therein are disposed on the terminal box, and the first buckle 351 and the first buckle hole 300 form the first buckle structure; alternatively, both sides of the protection cover 35 are fastened and fixed to the terminal box 3.
The terminal box 3 is provided with a connecting plate 33 for centralizing first pins 311 for connecting the voltage terminals 31 in a pairing manner, the connecting plate 33 is provided with a plurality of slots 331 for inserting the first pins 311 for connecting the voltage terminals 31 in a pairing manner, the voltage terminals 31 are connected with the connecting plate 33 through the cooperation of the first pins 311 and the slots 331, the first pins 311 are exposed out of the slots 331 and are connected with the first PCB 2, the connecting plate 33 is positioned at the inserting end of the voltage terminals 31, the connecting plate 33 extends along the length direction of the first PCB 2, the slots 331 are formed in the outer side wall of the connecting plate 33, and the voltage terminals 31 can be electrically connected with the first PCB 2 through the first pins 311. Further, the connection plate 33 has a stopper plate 332 extending downward thereon.
Specifically, the longitudinal section of the first pin 311 is substantially L-shaped, the first pin 311 includes a socket 3111 and pins 3112 disposed on the socket 3111 and extending toward the first PCB 2, wires connected to the voltage terminals 31 are disposed on the upper portion of the socket 3111, the slot 331 includes a groove 3311 for inserting the socket 3111 and a through slot 3312 for passing through the pin wire assembly, and the first pin 311 is inserted into the slot 331 and connected to the first PCB 2. The pin and wire assembly comprises a pin 3112, a wire and a connecting portion connected with the pin 3112 and the wire.
The current transformer 30 is inserted in the terminal box 3 and located at the upper side of the functional terminal 32, and the current transformer 30 is provided with a second pin 302 and is inserted on the first PCB 2 through the second pin 302 to be electrically connected with the first PCB 2. In this embodiment, the terminal box 3 is formed with a receiving slot 301 into which the current transformer 30 is inserted from top to bottom, an opening 3010 is formed on a side wall of the receiving slot 301, and a rib 303 is formed on a side wall of the current transformer 30, where the rib 303 is vertically disposed, and in an assembled state, the rib 303 is located in the corresponding opening 3010.
As shown in fig. 8 to 14, a liquid crystal bracket 4 with a liquid crystal 40 is disposed on the first PCB 2, a first groove 400 for mounting the liquid crystal 40 is disposed on the liquid crystal bracket 4, corners of inner side walls of the first groove 400 are in arc transition, and a gap 401 is formed between inner side walls of corners of the first groove 400 and outer side walls of corresponding corners of the liquid crystal 40 when the liquid crystal 40 is in an assembled state. The existence of the gap 401 enables the corners of the liquid crystal to be separated from the corners of the corresponding liquid crystal support, so that the corners of the liquid crystal are prevented from being damaged when the liquid crystal moves, and the service life of the liquid crystal is prolonged.
In order to facilitate the guiding of the liquid crystal into the first groove, a guiding group 44 for guiding the liquid crystal 40 is disposed on the inner sidewall of the first groove 400, the guiding group 44 includes a first guiding block 441 and a second guiding block 442, the first guiding block 441 and the second guiding block 442 are disposed on two inner sidewalls of one corner of the first groove 400, respectively, and in the assembled state of the liquid crystal 40, the outer sidewall of the liquid crystal 40 abuts against the inner sidewalls of the corresponding first guiding block 441 and second guiding block 442. In addition, a low-voltage element is disposed at the bottom of the liquid crystal 40, and a high-voltage element is inserted on the first PCB 2 and is located below the liquid crystal support 4, and a second groove 4000 is formed by downwardly recessing the upper surface of the first groove 400, wherein the bottom surface of the second groove 4000 protrudes outside the bottom surface of the first groove 400, i.e. the bottom surface of the second groove 4000 is lower than the bottom surface of the first groove 400, so that the high-voltage element is located below the bottom surface of the second groove 4000. Thus, the creepage distance between the high-voltage element at the bottom of the liquid crystal support and the low-voltage element at the bottom of the liquid crystal is increased, the high-voltage element and the low-voltage element are prevented from being interfered, the generated high-voltage static electricity is prevented from causing the liquid crystal to be incapable of displaying, and the service life of the liquid crystal is prolonged. Further, a first space 5 through which the flexible circuit board 4001 of the liquid crystal 40 passes is formed between the second groove and the liquid crystal.
In order to facilitate the installation of the liquid crystal support, one side of the liquid crystal support 4 is hooked on the first PCB 2, and the other side of the liquid crystal support is fixed on the first PCB 2 through a third fastening structure. Specifically, one side of the liquid crystal support 4 is provided with a hook 41 extending downwards, the other side of the liquid crystal support 4 is provided with a third buckle 42, correspondingly, the first PCB 2 is provided with a mounting hole 26 matched with the hook 41, and a second buckle hole 25 matched with the third buckle 42, and in the assembled state, the hook 41 and the third buckle 42 are respectively connected with corresponding positions on the surface of the first PCB 2 in a matched manner.
In this embodiment, in order to conveniently realize the positioning support of the liquid crystal bracket, the liquid crystal bracket 4 has a first positioning post 431 extending downward, a first supporting member 43 is disposed on an outer sidewall of the first positioning post 431, a first positioning post 431 extending downward is disposed at a bottom of the first supporting member 43, a first positioning hole 27 through which the first positioning post 431 passes is formed on the first PCB 2, and in an assembled state, the bottom of the first supporting member 43 abuts against a surface of the first PCB 2. Further, the outer side wall of the hanger 41 is provided with a reinforcing rib 411, and the bottom of the reinforcing rib 411 is on the same plane as the bottom of the first support 43. In this embodiment, the presence of the first support and the first positioning column makes a second space 6 for mounting the electronic component formed between the liquid crystal bracket 4 and the first PCB board 2, thereby increasing the space utilization.
In addition, the liquid crystal support 4 is provided with clamping pins for fixing the liquid crystal 40 in the first groove 400, the clamping pins include a first clamping pin 461 and a second clamping pin 462, the first clamping pin 461 is disposed on a side wall opposite to the positioning block 45, and at least two second clamping pins 462 are respectively disposed on the other two side walls of the liquid crystal support 4. Two opposite bar-shaped holes 402 are formed on the inner side wall of the first groove 400, and an elastic plate 47 is formed through the bar-shaped holes 402, and the elastic plate 47 extends upwards and bends to form a second clamping leg 462.
One side of the first groove 400 in this embodiment is provided with a positioning block 45 for restricting the detachment of the liquid crystal 40, the positioning block 45 is disposed opposite to the first guiding block 441, and the inner side wall of the positioning block 45 is provided with a guiding surface for guiding the liquid crystal 40, and when the liquid crystal 40 is in an assembled state, the outer side wall of the liquid crystal 40 abuts against the inner side wall of the positioning block 45, so as to prevent the corner of the liquid crystal from tilting. In addition, in the present embodiment, the first guiding block 441 is further configured to cooperate with the positioning block 45 to position the liquid crystal. In this embodiment, the terminal box 3 is detachably fixed on one side of the base 1 in the length direction, the base 1 is provided with a limiting plate 14 extending along the width direction, and in the assembled state, the outer side wall of the terminal box 3 abuts against the inner side wall of the limiting plate 14 and is fixed on the base 1 through a second fastening structure. Specifically, a fourth buckle 39 is provided on the outer side wall of the terminal box 3, a third buckle hole 13 matched with the fourth buckle 39 is provided on the base 1 at a position corresponding to the fourth buckle 39, and the terminal box 3 is fixedly connected with the base 1 through the matching of the fourth buckle 39 and the third buckle hole 13.
In order to realize the fixed of first PCB board, be provided with second buckle 11 on the inside wall of base 1, offered on the first PCB board 2 with second buckle 11 matched with draw-in groove 21, be provided with the supporting shoe 111 that is used for supporting first PCB board 2 on the inside wall of base 1, supporting shoe 111 is located the lower part of second buckle 11, under the assembly completion state, first PCB board 2 is located between second buckle 11 and the supporting shoe 111. In this embodiment, the inner sidewall of the base 1 is formed with a reinforcing plate 19, and the second buckle 11 and the supporting block 111 are disposed on the upper portion of the inner sidewall of the reinforcing plate 19.
In order to realize the positioning of the first PCB, the upper part of the terminal box 3 is provided with a second positioning column 304, the first PCB 2 is provided with a second positioning hole 24 for the second positioning column 304 to pass through, and the first PCB 2 is mounted on the terminal box 3 through the cooperation of the second positioning hole 24 and the second positioning column 304. In addition, the inner sidewall of the base 1 is provided with a second supporting member 12 for supporting the first PCB 2, the top of the second supporting member 12 is substantially on the same plane with the top of the supporting block 111, so as to support the first PCB, the second supporting member 12 has a post 121 extending upward, the first PCB 2 is provided with a through hole 22 through which the post 121 passes, and the first PCB 2 is disposed on the base 1 by the cooperation of the post 121 and the through hole 22.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (19)

1. The utility model provides a concentrator, including end button box (3) and current transformer (30), be provided with functional terminal (32) in end button box (3), the upside of end button box (3) sets up first PCB board (2), its characterized in that: a second PCB (34) for centralizing the conductive columns (321) of the functional terminals (32) is arranged in the terminal box (3), the second PCB (34) is positioned below the functional terminals (32), the functional terminals (32) are electrically connected with the first PCB (2) through the second PCB (34), and a protective cover (35) is arranged outside the second PCB (34); the current transformer (30) is inserted in the terminal box (3) and is positioned on the upper side of the functional terminal (32), and the current transformer (30) is provided with a second pin (302) and is electrically connected with the first PCB (2) through the second pin (302).
2. The concentrator as in claim 1, wherein: the lower part of the protective cover (35) is provided with an elastic plate (36), the inner side wall of the end button box (3) is provided with a guide rib (37) extending inwards, and the bottom of the elastic plate (36) is propped against the guide rib (37) when the assembly is completed.
3. The concentrator as in claim 2, wherein: one side of the protective cover (35) is in plug-in fit with the end button box (3), and the other side of the protective cover is fixed on the inner side wall of the end button box (3) through a first buckle structure; or, both sides of the protective cover (35) are clamped and fixed on the end button box (3).
4. A concentrator as claimed in claim 3, wherein: the elastic plate (36) is located on one side of the protection cover (35), a first buckle (351) is arranged on the outer side wall of the elastic plate (36), a protruding block (352) is outwards extended on the other outer side wall of the protection cover (35), and correspondingly, a first buckling hole (300) matched with the first buckle (351) and an inserting hole (305) for inserting the protruding block (352) are formed in the terminal box.
5. The concentrator as in claim 2, wherein: the second PCB (34) is provided with a through hole (342) for the conductive post (321) to pass through, the functional terminal (32) is electrically connected with the second PCB (34) through the cooperation of the conductive post (321) and the through hole (342), and the second PCB (34) is also provided with a pin array (341) electrically connected with the first PCB (2).
6. The concentrator as in claim 1, wherein: the terminal box (3) is provided with a containing groove (301) in which the power supply transformer (30) is inserted from top to bottom.
7. The concentrator as defined in claim 6, wherein: an opening (3010) is formed in the side wall of the accommodating groove (301), a rib (303) is formed in one side wall of the current transformer (30), and the rib (303) is located in the corresponding opening (3010) in the assembled state.
8. The concentrator of any one of claims 1 to 7, wherein: the liquid crystal display device is characterized in that a liquid crystal bracket (4) with liquid crystal (40) is arranged on the first PCB (2), one side of the liquid crystal bracket (4) is hooked on the first PCB (2), and the other side of the liquid crystal bracket is fixed on the first PCB (2) through a third fastening structure.
9. The concentrator as recited in claim 8, wherein: one side of liquid crystal support (4) has couple (41) of downwardly extending, the opposite side of liquid crystal support (4) is provided with third buckle (42), correspondingly, set up on first PCB board (2) with couple (41) matched with mounting hole (26) to and with third buckle (42) matched with second knot hole (25), under the assembly completion state, couple (41) and third buckle (42) respectively with the corresponding position cooperation of the bottom surface of first PCB board (2) is connected.
10. The concentrator as in claim 9, wherein: the liquid crystal support (4) is provided with a first supporting piece (43) extending downwards, a first positioning column (431) extending downwards is arranged at the bottom of the first supporting piece (43), a first positioning hole (27) for the first positioning column (431) to pass through is formed in the first PCB (2), and the bottom of the first supporting piece (43) abuts against the surface of the first PCB (2) in an assembly completion state.
11. The concentrator as in claim 10, wherein: a reinforcing rib plate (411) is arranged on the outer side wall of the hook (41), and the bottom of the reinforcing rib plate (411) and the bottom of the first support piece (43) are on the same plane.
12. The concentrator as recited in claim 8, wherein: the liquid crystal display device is characterized in that a first groove (400) for installing the liquid crystal (40) is formed in the liquid crystal support (4), the corners of the inner side walls of the first groove (400) are in arc transition, and a gap (401) is formed between the inner side walls of the corners of the first groove (400) and the outer side walls of the corresponding corners of the liquid crystal (40) when the liquid crystal (40) is in an assembled state.
13. The concentrator as in claim 12, wherein: the liquid crystal display device is characterized in that a guide group (44) for conveniently guiding the liquid crystal (40) is arranged on the inner side wall of the first groove (400), the guide group (44) comprises a first guide block (441) and a second guide block (442), the first guide block (441) and the second guide block (442) are respectively arranged on the two inner side walls of one corner of the first groove (400), and the outer side wall of the liquid crystal (40) is propped against the inner side walls of the corresponding first guide block (441) and second guide block (442) when the liquid crystal (40) is in an assembling state.
14. The concentrator as in claim 12, wherein: the bottom of the liquid crystal display (40) is provided with a low-voltage element, the first PCB (2) is inserted with a high-voltage element, the upper surface of the first groove (400) is downwards sunken to form a second groove (4000), the bottom surface of the second groove (4000) is outwards protruded from the bottom surface of the first groove (400), and the high-voltage element is positioned below the bottom surface of the second groove (4000).
15. The concentrator as in claim 1, wherein: the upper portion of end button box (3) is provided with second reference column (304), offer second locating hole (24) that supply second reference column (304) to pass on first PCB board (2), first PCB board (2) are installed on end button box (3) through the cooperation of second locating hole (24) and second reference column (304).
16. The concentrator as in claim 15, wherein: the end button box (3) is arranged on a base (1) of the concentrator, a limiting plate (14) extending along the width direction is arranged on the base (1), and the outer side wall of the end button box (3) abuts against the inner side wall of the limiting plate (14) and is fixed on the base (1) through a second buckle structure in an assembly completion state.
17. The concentrator as in claim 16, wherein: the end button box (3) is provided with a fourth buckle (39) on the outer side wall, a third buckle hole (13) matched with the fourth buckle (39) is formed in a position, corresponding to the fourth buckle (39), of the base (1), and the end button box (3) is fixedly connected with the base (1) through the cooperation of the fourth buckle (39) and the third buckle hole (13).
18. The concentrator as in claim 17, wherein: be provided with second buckle (11) on the inside wall of base (1), set up on first PCB board (2) with second buckle (11) matched with draw-in groove (21), be provided with on the inside wall of base (1) and be used for supporting shoe (111) of first PCB board (2), supporting shoe (111) are located the lower part of second buckle (11), under the assembly completion state, first PCB board (2) are located between second buckle (11) and supporting shoe (111).
19. The concentrator as in claim 18, wherein: the base (1) is provided with a reinforcing plate (19) formed on the inner side wall, and the second buckle (11) and the supporting block (111) are arranged on the upper portion of the inner side wall of the reinforcing plate (19).
CN201810702719.8A 2018-06-30 2018-06-30 Concentrator Active CN108564779B (en)

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