CN202330491U

CN202330491U - Three-phase kilowatt-hour meter without manual welding

Info

Publication number: CN202330491U
Application number: CN201120508225XU
Authority: CN
Inventors: 周树山; 吕新伟; 李先怀; 郑小平
Original assignee: Wasion Group Co Ltd
Current assignee: Wasion Group Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-07-11
Anticipated expiration: 2021-12-08

Abstract

The utility model discloses a three-phase kilowatt-hour meter without manual welding, which comprises an ammeter box, a PCB (printed circuit board) and all electronic components arranged on the PCB, and is characterized in that: the electronic components are all arranged on a front face of the PCB and are automatically welded through wave welding or paste reflow welding. According to the three-phase kilowatt-hour meter without manual welding, the production efficiency and the product qualification rate can be effectively improved, and some defects caused by manual welding can be avoided.

Description

The three-phase electric energy meter of no manual welding

Technical field

The utility model relates to a kind of three-phase electric energy meter.

Background technology

Three-phase electric energy meter generally all has the electronic devices and components on watchcase, pcb board and this pcb board; But the crest welding has all been adopted in the electronic devices and components welding at present on the pcb board; The paster reflow soldering, three kinds of modes of manual welding and the welding technology of depositing, manual welding is exactly that the workpeople takes electric soldering iron on the other hand; Take solder stick on the other hand, the electronic devices and components that are inserted on the pcb board are welded one by one.Manual welding is applicable to that mainly the electronic devices and components on the pcb board can't weld under the once completion situation through crest, or the pros and cons of pcb board all is designed with electronic devices and components, just can only one side be carried out wave-soldering, another side just must the situation of manual welding under.But along with the progress in epoch, the traditional hand welding can not have been satisfied the demand that the three-phase electric energy meter modernization is produced fast, and when producing in enormous quantities, manual welding causes three-phase electric energy meter that following a plurality of defective is arranged:

1, manual welding labor intensive, production efficiency is low, and cost of labor is high, and the production cycle is long;

2, manual welding reliability is low, occurs rosin joint easily, and bad connection causes doing over again;

3, the solder joint consistance of manual welding is poor, and workman's welding familiarity and peopleware are variant, and weld horizontal is uneven, has influenced the measuring accuracy and welding aesthetic of electric energy meter;

4, manual welding in stacking and production run, causes pcb board and electronic devices and components to receive secondary damage because be manually-operated easily, has reduced product percent of pass.

The utility model content

The purpose of the utility model is to provide a kind of and can effectively enhances productivity and the no manual welding three-phase electric energy meter of product percent of pass.

The three-phase electric energy meter of this no manual welding that the utility model provides; Comprise electric meter box, pcb board and be installed in all electronic devices and components on the pcb board; Said electronic devices and components all are arranged in the front of pcb board, weld automatically through wave-soldering or paster Reflow Soldering.

The utility model is compared its advantage with existing electric energy meter:

1, the production efficiency of three-phase electric energy meter has improved, and cost of labor has reduced, and the production cycle has shortened;

2, the whole aircraft reliability of three-phase electric energy meter has improved, because of doing over again of bringing of manual welding defective do not existed;

3, the consistance of three-phase electric energy meter is better, and the electrical energy meter accuracy deviation of bringing because of the manual welding mass discrepancy has reduced;

4, the three-phase electric energy meter pcb board and the electronic devices and components secondary damage that bring of manually-operated do not existed yet, and fraction defective greatly reduces.

Description of drawings

Fig. 1 is the blast schematic internal view of the utility model.

Fig. 2 is the pcb board front view (FV) of the utility model three-phase electric energy meter.

Fig. 3 is pcb board reverse side figure.

Embodiment

Can find out from Fig. 1-Fig. 3; The utlity model has watchcase (1,2), pcb board 3 and electronic devices and components 4; Wherein watchcase comprises box 2 and end box 1, and electronic devices and components 4 are meant that all are welded on the electronic devices and components on the pcb board, such as transformer, LCDs, backlight, connector, electric capacity, voltage dependent resistor (VDR) etc.; All these electronic devices and components all are inserted in the front of pcb board 3; The reverse side of pcb board (3) does not have any electronic devices and components, accomplishes through crest welder or with the disposable welding of paster reflow soldering then, and the pcb board that will weld electronic devices and components then is installed in end box 1 the inside; Cover box 2, the three-phase electric energy meter of the utility model do not have manual welding that Here it is.The utility model production efficiency is high, and all production run just has only four steps, has significantly reduced production process; Saved the manual welding process procedure; Also avoid the many disadvantages brought because of manual welding technology, improved reliability of products, consistance; Simultaneously also improve production efficiency and product quality and precision, reduced production cost.

Claims

1. three-phase electric energy meter that does not have manual welding; Comprise electric meter box (1,2), pcb board (3) and be installed in all electronic devices and components (4) on the pcb board; It is characterized in that said electronic devices and components all are arranged in the front of pcb board (3), weld automatically through wave-soldering or paster Reflow Soldering.