CN2059237U

CN2059237U - Double face digit display electronic steelyard

Info

Publication number: CN2059237U
Application number: CN 89218218
Authority: CN
Inventors: 胡治平; 谢永杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-10-16
Filing date: 1989-10-16
Publication date: 1990-07-11

Abstract

A double face digit display electronic steelyard of the utility model belongs to a weighing appliance of weight. The double face digit display electronic steelyard adopts an electronic weighing of the pulling-crushing parallel strain beam and the double face digit display electronic steelyard is provided with a continuous peeling circuit of large signal simulation, and has the characteristics of shock-overload resistance and eccentric load resistance and dual-purpose alternating current-direct current. The double face digit display electronic steelyard has the characteristics of double face digital display and high precision of a top-loading type electronic scale. The double face digit display electronic steelyard also has the portability of a digital mini electronic scale; the manufacture is easy and the cost is low. The double face digit display electronic steelyard is also provided with a shaping outer housing and a compact modularized inner structure. The double face digit display electronic steelyard is a popularity improved version of the traditional digital electronic scale. This double face digit display electronic steelyard has the advantages of exact metering, high sensibility, light self weight and convenient operation. The double face digit display electronic steelyard is adapted for hanging or handy weighing in folks, business and a farm product market.

Description

Double face digit display electronic steelyard

The utility model belongs to a kind of weighing scale device, is a kind of universal modified of existing digital electronic weigher.

Existing digital electronic weigher can be divided into two classes: closed loop scale and open loop scale.The closed loop scale is the assurance precision, the several load sensors of multiselect, and function is more, thereby complex structure, involves great expense; The open loop scale is simple in structure, and cost is lower, but general precision is not high, and function is less.In recent years, the common issue with of the commercial digital electronic weigher of using on the market is cost height, fetch long price, and trouble is adjusted in operation, and power consumption is bigger, and mostly is upper utensil type (desk-top), Alternating Current Power Supply, and volume is bigger, and use is hung, is guided and supported in inconvenience; And digital minisize electronic scales (CN2035874U) anti-bias load and impact acceleration ability.Thereby limited the universal utilization of electronic scales, influenced the electronic scale weighing intuitive display, rapidly, the performance of advantage that confidence level is good.

The purpose of this utility model is will provide to have open loop scale structure, the two-sided digital display electronics hook scale of closed loop scale precision, performance.It is complied with folks of china, commercial hook and guides and supports the custom of weighing, anti-bias load and impact acceleration, and with low cost, volume is little, and is low in energy consumption, and AC/DC is beneficial to town and country and applies and popularize.

Task of the present utility model is that following mode is finished: custom-designedly hanging inner being in the shell molds of cavity by the metal suspension ring at one, fixed in position has the tension and compression parallel strain beam sensor of good reproducibility, linearity and anti-bias load ability, this sensor is connecting pull bar, steelyard hook by floor stringer, can hook weight weighing.When weighing, by the obtained weight simulating signal of tension and compression parallel strain beam sensor, through filtering, linear amplification, large-signal simulation peeling, decoding, become the binary-coded decimal digital signal, again by the two-sided digital display screen of driving circuit dynamic driving, show simultaneously two identical by weighing weight of heavy numerical value, and have overload to overflow indication.Shock resistance overload mechanism can prevent sensor damages that be hit, and has improved reliability and has prolonged serviceable life.

In conjunction with the accompanying drawings, further specify as follows:

Figure one is two-sided digital display electronics hook scale outside drawing.

Figure two is two-sided digital display electronics hook scale longitudinal sectional view.

Figure three is a two-sided digital display electronics hook scale large-signal simulation peeling circuit diagram continuously.

Among the figure one, two, (1) is the metal suspension ring; (2) shell molds that is hanging for suspension ring (1) is mounted with custom-designed tension and compression parallel strain beam sensor (3) on its internal cavities top base; (4) be floor stringer; (5) be shock resistance overload mechanism; (6) be circuit board, design has large-signal simulation peeling circuit continuously, special-purpose zeroing peeling potentiometer and other circuit modules on it; (7) be pull bar; (8) be steelyard hook; (9) be the box-like cover plate of shell molds, it is for sealing scale body and settle battery design; (10) be the direct current supply battery; (11) for being placed in two digital display screens on the shell molds symmetry side window, be used for showing the numerical value of weighing; (12) be the external AC supply socket,, can directly drive the scale work of electronics hook and charge the battery by custom-designed switch.On the box-like cover plate in shell molds bottom, also leave peeling zeroing hole, so that the utilization screwdriver inserts the zeroing peeling.Side at shell molds also is provided with the self-locking power switch in addition, is convenient to open and close working power.

Figure three is that circuit theory diagrams are removed the peel in the large-signal simulation continuously in the two-sided digital display electronics hook scale circuit block diagram.Analog voltage signal after this circuit line taking amplification and the adjustable bucking voltage superposition that is produced by custom-designed phase inverter are offset tare weight continuously, adjust zero point, and guarantee that unlikely introducing is disturbed and the reduction signal to noise ratio (S/N ratio).

This Double face digit display electronic steelyard, accurate measurement, highly sensitive, from heavy and light, cost is low, uses easy to operately, is suitable for hanging among the people, commercial, the farmers market or guiding and supporting and weigh.

Claims

1, two-sided digital display electronics hook scale belongs to a kind of weighing scale device, by metal suspension ring (1) and hanging inner shell molds (2), floor stringer (4), circuit board (6), pull bar (7), steelyard hook (8), the box-like cover plate (9) that is cavity and formed, it is characterized in that:

(a) between hook scale shell molds (2) inner chamber pedestal and floor stringer (4), tension and compression parallel strain beam sensor (3) is installed;

(b) be provided with shock resistance overload mechanism (5) in hook scale shell molds (2) bottom;

(c) circuit board (6) of hook scale shell molds (2) inner chamber is provided with large-signal simulation peeling circuit continuously.

2, by the described two-sided digital display electronics hook scale of claim 1, it is characterized in that on the window of the symmetrical side of shell molds (2), respectively being provided with a digital display screen (11).

3, by the described two-sided digital display electronics hook scale of claim 1, it is characterized in that dc-battery (10) or AC power (12) are dual-purpose.