CN105973396A

CN105973396A - Safety electronic scale

Info

Publication number: CN105973396A
Application number: CN201610098414.1A
Authority: CN
Inventors: 申俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-20
Filing date: 2016-01-20
Publication date: 2016-09-28

Abstract

The invention discloses a safety electronic scale. The safety electronic scale comprises a loading plate, a first precision weighing component which is used for supporting the loading plate, a second precision weighing component which is used for supporting the loading plate and the first precision weighing component, and a force transmitting member which is used for transmitting the received pressure to the second precision weighing component. The first precision weighing component comprises an elastic support member. The force transmitting member comprises a tubular supporting wall which forms a cavity. The tubular supporting wall crimps the top end of a cassette. The top end of the tubular supporting wall is used as a force transmitting support part. The bottom wall of the loading plate is used as a force transmitting crimp part. In a free state, the force transmitting crimp part of the loading plate is higher than the force transmitting support part of the force transmitting member. When the loading plate carries an object, the stressed loading plate presses the elastic support member and moves down. After the loading plate is stressed to a certain extent, the force transmitting crimp part crimps the force transmitting support part of the force transmitting member. The safety electronic scale provided by the invention can be used as a weight electronic scale and a kitchen electronic scale.

Description

Safty electronic scale

Technical field

The invention belongs to electronic balance structure design field, be specifically related to a kind of Safty 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 Safty electronic scale of electronic scale that precision is high.

The technical scheme realizing the object of the invention is: a kind of Safty 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；Second precision is weighed the deck that assembly includes having storage tank, the second precision force-measuring sensing being arranged in storage tank Spike on the second precision force cell of device, apical grafting, cover storage tank bottom opening and there is center positioning hole Spring lid；Prop up spike to be arranged in the center positioning hole of spring lid；The power part of leading includes enclosing the tubular support wall forming vestibule, This tubular support wall pressure is connected on deck roof；The top of tubular support wall is as leading power support, and the diapire of support board is made For leading power pressure contact portion；First precision assembly of weighing includes elastic supporting piece, the first precision force cell, is arranged on first Precision force cell one end and load boss upwardly, it is arranged on the first accurate sensor other end and to lower process Support rim；Described elastic supporting piece includes screw thread spring, the upper supporting part being arranged on screw thread spring top, is arranged on The lower supporting part of screw thread spring bottom end；The roof of load boss is bonded and fixed on support board diapire, the diapire of support rim Being crimped on the upper supporting part in elastic supporting piece, lower supporting part is crimped on the roof of deck；During free state, loading Power of the leading pressure contact portion of plate exceeds power of the leading support leading power part；During support board carrying object, under support board stress, compression elasticity props up Bearing member and move down, support board is in stress to after to a certain degree, and it is led power pressure contact portion and is 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 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 side-looking structural representation of the present invention；

Fig. 2 is a kind of side-looking structural representation when being in another state of the electronic scale shown in Fig. 1；

Fig. 3 is a kind of perspective view of the second precision force cell in electronic scale shown in Fig. 1；

Fig. 4 is a kind of perspective view when another angle is observed of the second precision force cell shown in Fig. 3.

Detailed description of the invention

(embodiment 1)

The present embodiment is a kind of Safty electronic scale, as shown in Fig. 1 to Fig. 4, including support board 1, for a carrier First precision of plate weigh assembly 2, for support support board and the first precision weigh the second precision of assembly weigh assembly 3, And weigh power of the leading part 4 of assembly for self pressure is passed to the second precision；In the present embodiment, the first precision Weigh assembly and the second precision is weighed the equal only one of which of quantity of assembly.

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 Propping up spike 32 and include that cylindrical metal props up bracer 321 and the supporting plate 323 being made into integration with a bracer, supporting plate 323 is positioned at and props up The bottom of spike, less than spring lid, the area of supporting plate is relatively big, can be stable support the complete of whole electronic scale and carrying object Portion's weight.The concrete structure of described spring lid is to include inner ring, outer ring and connect inner ring and a plurality of spiral arm of outer ring, in Hole, heart location is arranged on inner ring, and its effect is that positioning metal props up bracer, allows metal support block vertical for self pressure Going down, the most also avoids deck that self pressure is directly passed to metal support block by spring lid, owing to it is tied Structure and technique effect are well known to those skilled in the art already, and it is no longer carefully stated by the present embodiment.Supporting plate is as support The bottom of foot, is the least significant end of the present embodiment.

Power of leading part 4 in the present embodiment includes enclosing the tubular support wall 42 forming vestibule, and this tubular support wall pressure connects setting On the roof of deck 34.Power of leading part 4 and the second precision in the present embodiment weigh the deck 34 in assembly by injection Molding mode is made into integration.In the present embodiment, the top of tubular support wall 42 as leading power support 40, support board Diapire is as leading power pressure contact portion 10.

In the present embodiment, the first precision assembly 2 of weighing is arranged in the vestibule that tubular support wall encloses formation, the first precision The concrete structure of assembly 2 of weighing is as follows: includes elastic supporting piece the 21, first precision force cell 22, be arranged on One precision force cell one end and load boss 25 upwardly, it is arranged on the first accurate sensor other end and downwards The support rim 26 of projection；Described elastic supporting piece includes screw thread spring 211, is arranged on the upper supporting on screw thread spring top Part 212, being arranged on the lower supporting part 213 of screw thread spring bottom end, the top of screw thread spring and upper supporting part are solid by screw Fixed connected, the bottom of screw thread spring is fixedly linked also by screw with lower supporting part；The roof bonding of load boss 25 is solid Being scheduled on support board diapire, the diapire of support rim 26 crimps and is fixed on the upper supporting part in elastic supporting piece, under Supporting member crimps and is fixed on the roof of deck 34.

The first precision force cell in the present embodiment is a kind of cantilevered force cell known to those skilled in the art, is Conventional Weighing module for kitchen use, its range is 0 to 20 kilogram, and precision is 1 gram；

In the present embodiment, as shown in Fig. 3 and Fig. 4, the second precision force cell 31 is that conventional body weight weighs Sensor, its range is 5 kilograms to 180 kilograms, and precision (also referred to as scale division value) is 100 grams；This second precision is surveyed Force transducer 31 includes the second fixed part the 311, second load deformations 312 and the second resistance strain gage 313.This is second years old Second fixed part 311 of precision force cell is fixed in the draw-in groove of deck 34, and bracer 321 apical grafting is the In two load deformations 312.

The operation principle of the present embodiment is: when carrying the pressure of object suffered by support board less than the first precision force cell During maximum range, under the supporting of elastic supporting piece, power of the leading pressure contact portion 10 of support board exceed all the time lead power part lead power Support 40, namely the diapire of support board exceeds the top of tubular support wall all the time, support board is whole pressures of carrying object Power first passes through the first precision force cell and passes to elastic supporting piece, then through elastic supporting piece pressure transmission To the second precision force cell；Display screen can be made to show the first precision now by regulation switch or intelligent control circuit The weight amount that assembly of weighing weighs, ignores the second precision and weighs the weighing numerical value of assembly, should during weighing precision can Reach 1 gram, so the present embodiment can use as electronic scale.

When the pressure carrying object suffered by support board is more than the maximum range of the first precision force cell, leading of support board Power pressure contact portion 10 is crimped on simultaneously leads power of the leading support 40 of power part and the first precision is weighed on assembly；Support board is holding The partial pressure of object carrier passes to elastic supporting piece, then through elastic supporting piece by the first precision force cell The second precision force cell is given pressure transmission；Support board is also straight by leading power part for remaining pressure of carrying object simultaneously Connect and pass to the second precision force cell, owing to, during this, the deformation of elastic supporting piece will not increase, so carrying again Thing plate is applied to the pressure on the first accurate sensor and will not increase again, by selecting suitable screw thread spring, can make this Partial pressure is not over the elastic deformation tolerance range of the first precision force cell, namely will not damage the first precision survey Force transducer.Now by regulation switch or intelligent control circuit can make display screen show the second precision weigh assembly weigh Weight amount, ignore the first precision and weigh the weighing numerical value of assembly, should during weighing precision can reach 100 grams, So the present embodiment is also used as body weight electronic scale and uses.

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 Safty 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； Second precision is weighed the deck that assembly includes having storage tank, the second precision force cell being arranged in storage tank, top The spike that is connected on the second precision force cell, cover storage tank bottom opening and there is the spring of center positioning hole Lid；Prop up spike to be arranged in the center positioning hole of spring lid；The power part of leading includes enclosing the tubular support wall forming vestibule, this pipe Shape supporting walls is crimped on deck roof；The top of tubular support wall is as leading power support, and the diapire of support board is as leading Power pressure contact portion；First precision assembly of weighing includes elastic supporting piece, the first precision force cell, is arranged on the first precision Force cell one end and load boss upwardly, be arranged on the first accurate sensor other end and to lower process Support boss；Described elastic supporting piece includes screw thread spring, the upper supporting part being arranged on screw thread spring top, is arranged on screw thread The lower supporting part of spring bottom end；The roof of load boss is bonded and fixed on support board diapire, the diapire crimping of support rim On upper supporting part in elastic supporting piece, lower supporting part is crimped on the roof of deck；During free state, support board The power pressure contact portion of leading exceeds power of the leading support leading power part；During support board carrying 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 power pressure contact portion and is crimped on power of the leading support leading power part.

Safty 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.

Safty 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.