CN204462215U - A kind of single-phase many rates guide rail meter - Google Patents

Abstract

The utility model discloses a single-phase multi-rate guide rail meter, which comprises an upper shell and a bottom shell. A guide rail hook and a hook positioning screw are arranged in the hook installation groove. A guide hole is arranged longitudinally in the middle of the guide rail hook. The head of the hook locking screw passes through the guide hole and is connected to the bottom surface of the guide rail hook installation groove. , the return spring makes the guide rail hook move to the direction of the rail installation groove, and the inner cavity of the bottom case is provided with a terminal block, a power supply PCBA board and a liquid crystal PCBA board in sequence from bottom to top, and the upper case and the bottom case are connected by connecting screws, and the connecting screws A lead sealing plug is arranged on the top; a display window is arranged in the middle of the upper shell, and a liquid crystal lens is fixedly arranged at the display window. The above technical scheme has reasonable structure design, compact structure, small volume, low cost, reasonable lead seal position, and good anti-theft effect.

Description

A single-phase multi-rate rail meter

technical field

The utility model relates to the technical field of electric energy meters, in particular to a single-phase multi-rate rail meter.

Background technique

Single-phase multi-rate rail meter is a product for electric energy metering, usually installed on the standard DIN rail on the market. Due to the unreasonable structure setting of the single-phase multi-rate guide rail meters currently on the market, the installation of the single-phase multi-rate guide rail meter and the guide rail is troublesome, and the overall volume of the single-phase multi-rate guide rail meter is large. The width of the guide rail meter is 75mm. When it is installed in the cabinet or box, it takes up a lot of space, the operation is inconvenient, and the manufacturing cost is high; in addition, the lead seal of the upper case and the bottom case of the existing single-phase multi-rate guide rail meter Using two protruding lead sealing ears, this technical solution increases the volume of the single-phase multi-rate guide rail meter.

Contents of the invention

Aiming at the deficiencies of the existing technology, the purpose of this utility model is to provide a single-phase multi-rate guide rail meter with reasonable structure design, compact structure, small volume, low cost, reasonable lead seal position, and good anti-theft effect.

In order to achieve the above purpose, the utility model provides the following technical solutions: a single-phase multi-rate guide rail meter, including an upper case and a bottom case, a guide rail installation groove is arranged transversely in the middle of the lower end surface of the bottom case, and the bottom case A guide rail hook installation groove is arranged longitudinally in the middle part of the lower end surface of the shell, and a guide rail hook and a hook positioning screw are arranged in the guide rail hook installation groove, and a guide hole is longitudinally arranged in the middle part of the guide rail hook, and the head of the hook locking screw passes through the guide hole It is connected and fixed with the bottom surface of the guide rail hook installation groove, and the guide rail hook is fixedly provided with a return spring, which makes the guide rail hook move toward the direction of the guide rail installation groove, and the inner cavity of the bottom shell is sequentially provided with terminal blocks from bottom to top 1. The power supply PCBA board and the liquid crystal PCBA board, the terminal base and the inner wall of the inner cavity of the bottom case are clamped and fixed, the power supply PCBA board and the bottom case are detachably connected, and the liquid crystal PCBA board and the power supply PCBA board are plugged and fixed to form an electrical connection , the bottom surface of the bottom shell is provided with connecting screws, the upper shell and the bottom shell are connected by connecting screws, and the connecting screws are provided with lead sealing plugs; the middle part of the upper shell is provided with a display window, and fixedly installed at the display window With LCD lens.

By adopting the above technical scheme, the guide rail installation groove and the guide rail hook installation groove are set reasonably, the guide rail hook is easy to install, the operation of connecting with the existing guide rail is simple, and the structure is compact; when installed in the existing cabinet or box, the space occupied is small, And the setting of the lead seal plug is reasonable, and it is convenient to connect with the existing lead seal line. There is no need to set two protruding lead seal ears on the upper shell and the bottom shell, so that the single-phase multi-rate guide rail meter is small in size and low in manufacturing cost. .

The utility model is further configured as follows: the upper shell is provided with a terminal cover and a terminal cover connection block, the left and right ends of the terminal cover connection block are provided with connection holes, and the left and right ends of the terminal cover are integrally provided with two The round shaft matching the connecting hole mentioned above, the terminal cover is clamped with the connecting hole through the round shaft, and the terminal cover can be turned up and down. Through this setting, the terminal cover is set reasonably, the connection is simple, and the use is convenient.

The utility model is further set as follows: the upper shell is located at the position covered by the terminal cover and is provided with a rectangular protrusion, and the middle part of the rectangular protrusion is provided with a lead seal hole, and the terminal cover is aligned with the upper end of the rectangular protrusion and provided with a rectangular protrusion. The block matches the rectangular through hole, and the upper shell is located in the middle of the upper end of the rectangular through hole, and a lead seal groove is provided. The cross section of the lead seal groove and the rectangular through hole is in the shape of a "cross". Through this setting, the structural setting is more reasonable, and the terminal cover lead seal is easy to operate, safe and reliable.

The utility model is further configured as follows: the terminal base is provided with a row of connection terminals, and each connection terminal is provided with a connection locking screw. Through this setting, the wiring terminal is set reasonably and the wiring operation is convenient.

The utility model is further set as follows: the end surface of the power supply PCBA board is welded with a female row, the lower end of the liquid crystal PCBA board is welded with a pin row matching the female row, and the liquid crystal PCBA board forms a circuit through the pin row and the female row. connect. With this setting, the liquid crystal PCBA board and the power supply PCBA board are conveniently assembled and disassembled, and the maintenance is simple.

The utility model is further configured as: the middle part of the upper end surface of the upper shell is bonded with a nameplate. Through this setting, the position of the nameplate is set reasonably and easy to check.

The utility model is further set as: after the upper shell and the bottom shell are connected, the width of the whole single-phase multi-rate guide rail is 36mm. With this arrangement, the single-phase multi-rate rail meter is small in size and low in manufacturing cost.

The utility model has the advantages that: compared with the prior art, the utility model has a reasonable structure setting, reasonable setting of the guide rail installation groove and the guide rail hook installation groove, convenient installation of the guide rail hook, simple connection operation with the existing guide rail, and compact structure; It takes up little space when connecting to the existing cabinet or box, and the lead seal plug is set reasonably, and it is convenient to connect with the existing lead seal line, and there is no need to set two protruding lead seal ears on the upper shell and the bottom shell , making the single-phase multi-rate rail meter small in size and low in manufacturing cost.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is an exploded schematic diagram of an embodiment of the utility model.

detailed description

Referring to Fig. 1 and Fig. 2, a single-phase multi-rate guide rail meter disclosed by the utility model includes an upper case 1 and a bottom case 2, and a guide rail installation groove 21 is arranged transversely in the middle part of the lower end surface of the bottom case 2, so that A guide rail hook installation groove 22 is arranged longitudinally in the middle part of the lower end surface of the bottom shell 2, and a guide rail hook 3 and a hook positioning screw 4 are arranged in the guide rail hook installation groove 22, and a guide hole 31 is longitudinally arranged in the middle part of the guide rail hook 3, and the hook lock The head of tightening screw 4 passes guide hole 31 and is connected and fixed with guide rail hook installation groove 22 bottom surfaces, and described guide rail hook 3 is fixedly provided with back-moving spring 5, and this back-moving spring 5 makes guide rail hook 3 move toward rail installation groove 21 directions, The inner cavity of the bottom case 2 is provided with a terminal base 6, a power supply PCBA board 7 and a liquid crystal PCBA board 8 sequentially from bottom to top, the terminal base 6 is clamped and fixed with the inner wall of the inner cavity of the bottom housing 2, and the power supply PCBA The board 7 is detachably connected to the bottom case 2, the liquid crystal PCBA board 8 is plugged and fixed with the power supply PCBA board 7 to form an electrical connection, the bottom surface of the bottom case 2 is provided with a connecting screw 9, and the upper case 1 and the bottom case 2 are connected through The screw 9 is connected, and the connecting screw 9 is provided with a lead sealing plug 10; the middle part of the upper shell 1 is provided with a display window 11, and a liquid crystal lens 12 is fixedly provided at the display window 11.

The tail of the hook locking screw 4 restricts the guide rail hook 3 from falling, and the bottom case 2 can be directly clamped on the existing DIN standard guide rail by using the return spring 5 and the guide rail hook 3, and the existing guide rail is arranged on the guide rail The inside of the hook 3 can prevent the single-phase multi-rate guide rail table from falling from the guide rail when the bit spring 5 has an accident; the power supply PCBA board 7 is directly fixed on the bottom shell 2 with existing screws, and the liquid crystal PCBA board 8 and the power supply PCBA The boards 7 are connected by pin headers; the lead seal plug 10 is socketed with the connecting screw 9, and the lead seal plug 10 is provided with a threading hole. After the lead seal plug 10 is assembled, if it is taken out again, it will cause irreparable damage , Can play the function of anti-theft electricity.

In order to make the structure of the utility model more reasonable, preferably, the upper case 1 in this embodiment is provided with a terminal cover 13 and a terminal cover connection block 14, the terminal cover connection block 14 is integrally arranged with the upper case 1, and the terminal cover Connecting holes 141 are provided on the left and right ends of the connecting block 14, and the left and right ends of the terminal cover 13 are integrally provided with two circular shafts 131 matching the connecting holes 141, and the terminal cover 13 is snapped into the connecting holes 141 through the circular shafts 131 , and the terminal cover 13 can be turned up and down. When the terminal cover 13 is turned up to an angle of about 80 degrees, it will be stuck, and the terminal cover 13 will not fall automatically. Together, it can play the function of anti-theft electricity.

The upper case 1 is located at the cover position of the terminal cover 13 and is integrally provided with a rectangular bump 15, and the middle part of the rectangular bump 15 is provided with a lead seal hole 151, and the terminal cover 13 is aligned with the upper end of the rectangular bump 15 and is provided with a rectangular bump. 15 match the rectangular through hole 131, and the upper shell 1 is located in the middle of the upper end of the rectangular through hole 131 with a lead seal groove 132, the cross section of the lead seal groove 132 and the rectangular through hole 131 is in the shape of a "cross".

The terminal base 6 is provided with a row of connection terminals 16 , and each connection terminal 16 is provided with a connection locking screw 17 .

The upper end of the power supply PCBA 7 is welded with a female row, the lower end of the liquid crystal PCBA 8 is welded with a pin row matching the female row, and the liquid crystal PCBA 8 is electrically connected by plugging the pin row and the female row.

A nameplate 18 is glued to the middle of the upper end surface of the upper shell 1 . The liquid crystal lens 12 on the upper case 1 is ultrasonically welded, and the nameplate 18 is directly pasted on the upper case 1 with existing glue.

After the upper shell 1 and the bottom shell 2 are connected, the width of the entire single-phase multi-rate guide rail is 36mm.

The utility model has reasonable structural arrangement, reasonable arrangement of guide rail installation grooves and guide rail hook installation grooves, convenient installation of guide rail hooks, simple connection with existing guide rails, and compact structure; it occupies little space when installed in existing cabinets or boxes , and the setting of the lead seal plug is reasonable, and it is convenient to connect with the existing lead seal line. There is no need to set two protruding lead seal ears on the upper shell and the bottom shell, so that the single-phase multi-rate guide rail meter is small in size and low in manufacturing cost. Low.

The specific description of the utility model in the foregoing embodiments is only used to further illustrate the utility model, and cannot be interpreted as limiting the protection scope of the utility model. Technical engineers in the field make some non-essential modifications to the utility model according to the content of the utility model Improvements and adjustments all fall within the protection scope of the present utility model.

Claims (7)

1. single-phase many rates guide rail meter, comprise upper casing (1) and drain pan (2), a guide rails assembling groove (21) is horizontally arranged with in the middle part of described drain pan (2) lower surface, it is characterized in that: in the middle part of described drain pan (2) lower surface, be vertically arranged with guide rail hook mounting groove (22), and in guide rail hook mounting groove (22), be provided with guide rail hook (3) and hook dog screw (4), described guide rail hook (3) middle part is vertically arranged with pilot hole (31), the head of locked by hooks screw (4) is linked up with mounting groove (22) bottom surface through pilot hole (31) and guide rail and is connected and fixed, described guide rail hook (3) is fixedly installed back-moving spring (5), this back-moving spring (5) makes guide rail hook (3) direction guiding rail mounting groove (21) direction move, terminal base (6) is disposed with from the bottom up in the inner chamber of described drain pan (2), power supply PCBA board (7) and liquid crystal PCBA board (8), described terminal base (6) connects and fixes with the inner chamber internal face of drain pan (2), power supply PCBA board (7) and drain pan (2) removably connect, described liquid crystal PCBA board (8) is fixed to form with power supply PCBA board (7) grafting and is electrically connected, described drain pan (2) lower surface is provided with attachment screw (9), upper casing (1) is connected by attachment screw (9) with drain pan (2), and attachment screw (9) is provided with lead sealing plug (10), described upper casing (1) middle part is provided with display window (11), and is fixedly installed liquid crystal lens (12) at this display window (11) place.

2. the single-phase many rates guide rail meter of one according to claim 1, it is characterized in that: described upper casing (1) is provided with terminal cap (13) and terminal cap contiguous block (14), described terminal cap contiguous block (14) left and right both ends of the surface are provided with connecting hole (141), described terminal cap (13) two ends, left and right are wholely set two circular shafts (131) mated with described connecting hole (141), terminal cap (13) is by circular shaft (131) and connecting hole (141) clamping, and terminal cap (13) can spin upside down.

3. the single-phase many rates guide rail meter of one according to claim 1 and 2, it is characterized in that: described upper casing (1) is positioned at terminal cap (13) covering position and has been wholely set rectangular cam (15), and rectangular cam (15) middle part is provided with lead seal hole (151), described terminal cap (13) is aimed at rectangular cam (15) upper end and is provided with the rectangular through-hole (131) of mating with rectangular cam (15), and upper casing (1) is positioned at rectangular through-hole (131) upper center position is provided with lead sealing groove (132), described lead sealing groove (132) is " ten " font with the xsect of rectangular through-hole (131).

4. the single-phase many rates guide rail meter of one according to claim 3, it is characterized in that: described terminal base (6) is provided with row's connection terminal (16), each connection terminal (16) is provided with a wiring lock-screw (17).

5. the single-phase many rates guide rail meter of one according to claim 4, it is characterized in that: it is female that described power supply PCBA board (7) upper surface is welded with row, liquid crystal PCBA board (8) lower surface is welded with and describedly arranges female row's pin mate, and liquid crystal PCBA board (8) is by arranging pin and arranging female plug and connect to form and be electrically connected.

6. the single-phase many rates guide rail meter of one according to claim 5, is characterized in that: be bonded with nameplate (18) in the middle part of the upper surface of described upper casing (1).

7. a kind of single-phase many rates guide rail meter according to claim 1 or 5, is characterized in that: the wide 36mm of whole single-phase many rates guide rail meter after described upper casing (1) is connected with drain pan (2).