CN2157506Y

CN2157506Y - Domestic balance for weighing person

Info

Publication number: CN2157506Y
Application number: CN 93203254
Authority: CN
Inventors: 翁茂源
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-10
Filing date: 1993-02-10
Publication date: 1994-02-23
Anticipated expiration: 2003-02-10

Abstract

The utility model relates to a domestic balance for weighing a person comprising a lever system 1, a weighing spring 2, a banner shape knife-edge 3, a swing-rod assembly 4, a rack bar 5, a gear 6 and a scale display disc 7. The lever system can make the metering weighing spring produce a deformation amount after accepting a force; the deformation amount can be converted into a displacement amount by the banner shape knife-edge. The display disc can be rotated after the linear amplification of the swing-rod assembly and the transmission of the rack bar and the gear. The swing-rod assembly of the utility model is provided with an eccentric shaft sleeve rod with adjustable arm length; the amplification factor can be changed by rotating the sleeve rod so that the accuracy difference can be corrected or adjusted. The utility model has the advantages of simple structure and convenient adjustment.

Description

Domestic balance for weighing person

The utility model discloses a kind of is human body weighing's instrument of feature to use the element that can produce elastic deformation.

Mechanical type family expenses body-building weighing scales treasure in the existing known technology claims bathroom scale again, and its range of weighing is 0-100 or 120 kg, and minimum indicating value scale is 0.5 kilogram, and trueness error is 0.5 kilogram 1/200 during full scale.Because it is very difficult that its reasons in structure will improve weighing precision again, nonetheless to being positioned at vertically arranged computation weigh spring, the making accuracy requirement of main part in addition such as big small lever still needs very harsh, and assembling back weighing precision does not reach when requiring and can't proofread and correct.Simultaneously, owing to the surface corrosion of computation weigh spring under the influence of environment for use causes that the deformation set that line directly changes and long-time repeated load causes is all multifactor, cause this type of family expenses body-building weighing scales treasure to cannot say for sure to demonstrate,prove accuracy requirement in term of life.The Japan special permission Room discloses 0.2 kilogram of a kind of minimum indicating value scale in 1988 among the clear 63-25519 of disclosed patent gazette on February 3,0.2 kilogram of full scale time error, i.e. 1/500 two computation weigh spring composite structures.Its principle of work: a weak computation weigh spring works during from the 0-30 kilogram, and the amount of movement of scale display panel is controlled at than narrow range; The strong computation weigh spring of another works when scope is weighed in the practicality of 30 kilograms-weighing capacity, and the corresponding broad of amount of movement of scale display panel not only can improve indicating accuracy but also can conveniently look the purpose of reading thereby reach simultaneously.Precision in the use can't be proofreaied and correct after malfunctioning and manufacturing cost increases more shortcoming but it still exists.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art and proposes a kind of adjustment by simple structure and proofread and correct the weighing precision deviation that causes because of computation weigh spring linear error or the trueness error of levelling in term of life, thereby provide a kind of manufacturing more convenient, performance is perfect family expenses body-building body weight device further.

The purpose of this utility model can reach by following technical measures: by leverage, and weighing spring, the flag-shaped edge of a knife, oscillating bar assembly, tooth bar, gear and scale display panel are formed, and make the computation weigh spring produce deflection behind the lever stress.Described deflection is after the flag-shaped edge of a knife is converted to displacement, and through the linear amplification of oscillating bar assembly, and through tooth bar, gear drive drives display panel and rotates.The utility model oscillating bar assembly is the adjustable oscillating bar assembly of a brachium.Arm end in adjustable arm is provided with an excentric shaft loop bar.Because the brachium of fork can adjust, so the linear amplification coefficient of fork also respective change thereupon, thereby make the weighing precision deviation obtain proofreading and correct.

The utility model will be described in detail embodiment in conjunction with following accompanying drawing.

Fig. 1 is that fork and scale display structure transmit synoptic diagram.

Fig. 2 is the oscillating bar assembly structural representation.

Referring to Fig. 1, under the human body weight effect, make computation weigh spring 2 under suffered load, produce deflection by leverage 1, after the deflection of computation weigh spring 2 is converted to the displacement of the flag-shaped edge of a knife 3, through oscillating bar assembly 4 linear amplifications, the adjustment of its amplification coefficient can realize different installation sites on oscillating bar assembly 4 one arm ends by the eccentric bushing among Fig. 28, and then passes to gear 6 through tooth bar 5, and gear 6 and scale display panel 7 be coaxial fixedlys connected concentric rotation.When display panel scale numerical value overlaps with the capping cursor line and stops operating, promptly directly demonstrate human body weight.When precision is malfunctioning when assembling back precision determination becomes poor or after using, eccentric bushing in the oscillating bar assembly 8 can be taken out, again be inserted in after rotating required angle position, thereby can be under the constant state of other any conditions, change an end brachium of oscillating bar assembly, thereby the linear amplification coefficient of fork also changes thereupon, has realized the correction of accuracy error.

Claims

1, a kind of family expenses body-building weighing scales treasure, by leverage 1, weighing spring 2, the flag-shaped edge of a knife 3, oscillating bar assembly 4, tooth bar 5, gear 6 is formed with scale display panel 7, make the computation weigh spring produce deflection after leverage are stressed, described deflection is converted to displacement through the flag-shaped edge of a knife, through the linear amplification of oscillating bar assembly, and through tooth bar, gear drive, the drive display panel rotates, and it is characterized in that: described oscillating bar assembly 4 is the adjustable oscillating bar assembly of a brachium.

2, family expenses body-building weighing scales treasure as claimed in claim 1, it is characterized in that: the arm end of described adjustable arm is provided with an excentric shaft loop bar 8.