CN105937991A

CN105937991A - Double-precision electronic scale

Info

Publication number: CN105937991A
Application number: CN201610098387.8A
Authority: CN
Inventors: 申俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-20
Filing date: 2016-01-20
Publication date: 2016-09-14

Abstract

The invention discloses a double-precision electronic scale comprising a carrying plate, a first precision weighing assembly for supporting the carrying plate, a second precision weighing assembly for supporting the carrying plate and the first precision weighing assembly, and a force guiding element for transmitting a pressure exerted on the element to the second precision weighing assembly. The first precision weighing assembly includes an elastic support element. In a free state, a guiding and pressing part of the carrying plate is higher than a guiding and supporting part of the force guiding element. When the carrying plate carries an object, the carrying plate presses the elastic support element down under the force and thus moves down; after the force applied on the carrying plate reaches a certain degree, the guiding and pressing part moves down and presses the guiding and supporting part of the force guiding element. According to the invention, the provided electronic scale can be used both as an electronic weighing scale and an electronic kitchen scale; and when the weight of the carried object exceeds a maximum range of the kitchen electronic scale, the kitchen electronic scale can be protected from being damaged effectively.

Description

Double precision electronic scale

Technical field

The invention belongs to electronic balance structure design field, be specifically related to a kind of double precision electronic scale.

Background technology

Body weight electronic scale in the market, its structure mainly includes support board, display screen, regulation switch, power module With the LOAD CELLS composition for supporting support board, its function is mainly used in human body of weighing, and is usually when object to be claimed After weight exceedes preset value, display screen just starts to show numerical value, and this preset value is usually 5 kilograms；It addition, this kind of body weight The maximum range of electronic scale is usually 180 kilograms, and scale division value is 100 grams, and error is relatively big, so this traditional body weight Electronic scale, on ordinary days in addition to weighing in, substantially cannot function as its use, especially cannot be used for using as electronic scale. And existing electronic scale, its scale division value can reach 1 gram, but its range is usually no more than 50 kilograms, so not Can use as scale.The most also having scale division value to can reach 2 grams, range can reach the electronic scale of 150 kilograms, System uses the force cell that precision is higher and range is bigger to make, but its price is much more expensive, it is impossible to universal.

Summary of the invention

It is an object of the invention to provide a kind of cost relatively low, both can be as wide range, body weight electronic scale that precision is low, again Can be as small-range, the double precision electronic scale of electronic scale that precision is high.

The technical scheme realizing the object of the invention is: a kind of double precision electronic scale, including support board, for supporting support board The first precision weigh assembly, for support support board and the first precision weigh the second precision of assembly weigh assembly and Weigh power of the leading part of assembly for self pressure is passed to the second precision；First precision assembly of weighing includes elastic Bearing member；Support board is provided with leads power pressure contact portion；Each second precision assembly of weighing includes having the deck of storage tank, is arranged on A spike on the second precision force cell of the second precision force cell in storage tank, apical grafting, cover accommodating Trench bottom opening and there is the spring lid of center positioning hole；Prop up spike to be arranged in the center positioning hole of spring lid, the end of a spike End is the least significant end of this electronic scale；The power part of leading includes diapire and supporting walls, and the top of supporting walls, as leading power support, is led The diapire crimping of power part is arranged on deck top；Each first precision weigh assembly include elastic supporting piece, first precision survey Force transducer and the elastomeric cap with center spacing hole；Described elastic supporting piece includes screw thread spring, is arranged on screw thread spring The upper supporting part on top, being arranged on the lower supporting part of screw thread spring bottom end, the neighboring of elastomeric cap is fixedly installed on support On wall, the top of upper supporting part is bonded and fixed on support board diapire；Lower supporting part is arranged on the center spacing hole of elastomeric cap In, the diapire of lower supporting part is crimped on the first precision force cell；First precision force cell crimping is arranged on to be led On power part diapire；During free state, power of the leading pressure contact portion of support board exceeds power of the leading support leading power part；Support board carries During object, compression elasticity supporting member under support board stress and move down, support board is in stress to after to a certain degree, and it is led to defeat and connects Subordinate moves to be crimped on power of the leading support leading power part.

In such scheme, during support board stress moves down until being crimped on and leading on power part, elastic supporting piece is in elasticity Deformed state.

In such scheme, the diapire of support board is as leading power pressure contact portion.

In such scheme, the bottom of a spike is the least significant end of this electronic scale.

The present invention in use, while having concurrently as body weight electronic scale and electronic scale, moreover it is possible at object to be claimed Weight when exceeding the maximum range of electronic scale, effectively prevent from damaging electronic scale.It addition, the present invention can use On market, existing cheap force cell is made, so greatly reducing cost, it is easy to universal.

Accompanying drawing explanation

Fig. 1 is a kind of perspective view of the present invention；

Fig. 2 is a kind of perspective view when another angle is observed of the electronic scale shown in Fig. 1；

Fig. 3 is that electronic scale shown in Fig. 1 is as a kind of structural representation during electronic scale；

Fig. 4 is a kind of close-up schematic view in Fig. 3 at A；

Fig. 5 is that electronic scale shown in Fig. 1 is as a kind of structural representation during body weight electronic scale；

Fig. 6 is a kind of close-up schematic view in Fig. 5 at B；

Fig. 7 is a kind of perspective view of the first precision force cell in electronic scale shown in Fig. 1；

Fig. 8 is a kind of perspective view when another angle is observed of the first precision force cell shown in Fig. 7；

Fig. 9 is a kind of perspective view of the second precision force cell in electronic scale shown in Fig. 1；

Figure 10 is a kind of perspective view when another angle is observed of the second precision force cell shown in Fig. 9.

Detailed description of the invention

(embodiment 1)

The present embodiment is a kind of double precision electronic scale, as shown in Fig. 1 to Figure 10, including support board 1, display screen 11, Regulation switch 12, assembly 2 of weighing for four the first precision supporting support board, for supporting support board and the first precision Four the second precision of assembly of weighing are weighed assembly 3 and weighing group for self pressure is passed to the second precision Lead power part 4 for four of part.

In the present embodiment, the weigh concrete structure of assembly 3 of the second precision is as follows: include having storage tank 33 and draw-in groove Deck 34, the second precision force cell 31 being arranged in draw-in groove, apical grafting are on the second precision force cell 31 Prop up spike 32, cover storage tank 33 bottom opening and there is the spring lid 35 of center positioning hole 351；In the present embodiment Prop up spike 32 and include that cylindrical metal props up bracer 321 and is bonded in the slipmat 322 of bracer 321 bottom, described support Block 321 is arranged in the center positioning hole of spring lid, slipmat low go out spring lid.The concrete structure of described spring lid be include inner ring, Outer ring and connect inner ring and a plurality of spiral arm of outer ring, center positioning hole is arranged on inner ring, and its effect is positioning metal Prop up bracer, allow metal support block that self pressure is transmitted vertically downward, the most also avoid deck self pressure Directly pass to metal support block by spring lid, owing to its structure and technique effect are well known to those skilled in the art already, It is no longer carefully stated by the present embodiment.Structure this spring lid 35 similar of following elastomeric cap 24.

Power of leading part 4 in the present embodiment include being provided with the diapire 41 of buckling groove, enclose formed vestibule tubular support wall 42, Being arranged on the locating surface on tubular support wall inwall, this locating surface is a horizontal loops being radially arranged along tubular support wall 42 Shape face, diapire 41 crimping leading power part is arranged on deck 34 top.

In the present embodiment, the top of tubular support wall 42 is as leading power support 40, and the diapire of support board is defeated as leading Meet portion 10.

In the present embodiment, each first precision assembly 2 of weighing is arranged in a corresponding vestibule leading power part 4, and it is specifically tied Structure is as follows: includes elastic supporting piece the 21, first precision force cell 22 and has the elastomeric cap of center spacing hole 241 24；Described elastic supporting piece includes screw thread spring 211, the upper supporting part 212 being arranged on screw thread spring top, is arranged on The lower supporting part 213 of screw thread spring bottom end, screw thread spring is connected by trip bolt with upper supporting part and lower supporting part； The neighboring of elastomeric cap crimps and is bonded and fixed on the locating surface leading power part, and lower supporting part 213 is arranged on elastomeric cap In center spacing hole 241, upper supporting part is bonded and fixed on support board diapire.

First precision force cell 22 is arranged in the buckling groove leading power part diapire 41, and the diapire of lower supporting part is crimped on On first precision force cell.

In the present embodiment, as shown in Fig. 7 and Fig. 8, the first precision force cell 22 is conventional weighing mould for kitchen use Block, its range is 0 to 20 kilogram, and scale division value is 1 gram；This first precision force cell include the first fixed part 221, First load deformations 222 and the first resistance strain gage 223.First fixed part clamping of this first precision force cell Being fixed in the buckling groove leading power part diapire 41, the lower supporting part in elastic supporting piece is crimped in the first load deformations.

In the present embodiment, as shown in Fig. 9 and Figure 10, the second precision force cell 31 is that conventional body weight weighs Sensor, its range is 5 kilograms to 180 kilograms, and scale division value is 100 grams；This second precision force cell 31 wraps Include the second fixed part the 311, second load deformations 312 and the second resistance strain gage 313.This second precision force-measuring sensing Second fixed part 311 of device is fixed in the draw-in groove of deck 34, and bracer 321 apical grafting is in the second load deformations On 312.

Under free state, namely not placing on support board in time claiming object, in elastic supporting piece, the top of upper supporting part exceeds Lead the top of tubular support wall 42 in power part, so that the diapire 10 of support board exceeds the top leading power part.Work as loading Place wait claiming object and in time claiming thing heavily less than 20 kilograms on plate, by selecting suitable screw thread spring, can make to carry Thing plate is in stress folding process, and support board diapire exceeds all the time leads power part, and is in the elastic deformation scope of screw thread spring Within.Support board passes to the first precision force cell whole pressure of object to be claimed by elastic supporting piece, then Pass to the second precision force cell again, display screen can be made to show the now by regulation switch or intelligent control circuit One precision is weighed the weight amount that assembly weighs, and ignores the second precision and weighs the weighing numerical value of assembly, should during indexing Value can reach 1 gram, so the present embodiment can use as electronic scale.

When, in time claiming weight of object more than 20 kilograms, support board will move down until being crimped on and lead on power part, specifically It is crimped on the top as the tubular support wall 42 leading power support 40 as the support board diapire leading power pressure contact portion 10 simultaneously On end and the first precision is weighed on the upper supporting part in assembly.Its operation principle is: support board is the portion of object to be claimed Partial pressure passes to the first precision force cell by elastic supporting piece, passes to the second precision force-measuring sensing the most again Device；Support board is also directly passed to the second precision force cell remaining pressure of object to be claimed by leading power part simultaneously, Owing to, during this, the deformation of elastic supporting piece will not increase again, survey so passing to the first precision by elastic supporting piece The partial pressure of force transducer also will not increase again, by selecting suitable screw thread spring, can make this partial pressure will not More than the elastic deformation tolerance range of the first precision force cell, namely the first precision force cell will not be damaged.This Time switched by regulation or intelligent control circuit can make display screen show the weight amount weighed the second precision assembly weighs, Ignore the first precision to weigh the weighing numerical value of assembly, should during scale division value can reach 100 grams, so the present embodiment is also Can use as body weight electronic scale.

Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not to this The restriction of the embodiment of invention.For those of ordinary skill in the field, the most also may be used To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And this Belong to obvious change that the connotation of the present invention extended out a bit or variation still falls within protection scope of the present invention.

Claims

1. a double precision electronic scale, weighs assembly including support board, for supporting the first precision of support board；It is special Levy and be: also include for supporting support board and weigh the second precision of assembly of the first precision is weighed assembly and for handle Self pressure passes to the second precision and weighs power of the leading part of assembly；First precision assembly of weighing includes elastic supporting piece； Support board is provided with leads power pressure contact portion；Each second precision assembly of weighing includes having the deck of storage tank, is arranged on storage tank In the second precision force cell, the apical grafting spike on the second precision force cell, cover bottom storage tank Opening and there is the spring lid of center positioning hole；Prop up spike to be arranged in the center positioning hole of spring lid；The power part of leading include diapire and Supporting walls, the top of supporting walls is as leading power support, and the diapire crimping leading power part is arranged on deck top；Each first Precision assembly of weighing includes elastic supporting piece, the first precision force cell and has the elastomeric cap of center spacing hole；Described Elastic supporting piece includes screw thread spring, the upper supporting part being arranged on screw thread spring top, is arranged under screw thread spring bottom end Supporting member, the neighboring of elastomeric cap is fixedly installed on supporting walls, and the top of upper supporting part is bonded and fixed at the bottom of support board On wall；Lower supporting part is arranged in the center spacing hole of elastomeric cap, and the diapire of lower supporting part is crimped on the first precision dynamometry and passes On sensor；First precision force cell crimping is arranged on to be led on power part diapire；During free state, leading of support board is defeated The portion of connecing exceeds power of the leading support leading power part；Support board carrying object time, compression elasticity supporting member under support board stress and move down, Support board is in stress to after to a certain degree, and it is led to defeat and meets subordinate and move to be crimped on power of the leading support leading power part.

Double precision electronic scale the most according to claim 1, it is characterised in that: support board stress moves down until crimping During leading on power part, elastic supporting piece is in elastic deformation state.

Double precision electronic scale the most according to claim 1, it is characterised in that: the diapire of support board is defeated as leading Meet portion.

Double precision electronic scale the most according to claim 1, it is characterised in that: the bottom of a spike is this electronic scale Least significant end.