CN105937993A

CN105937993A - Safety type dual-precision electronic scale

Info

Publication number: CN105937993A
Application number: CN201610098389.7A
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 safety type dual-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. The force guiding element includes a square bearing plate used as a force guiding support part. In a free state, a guiding compressing part of the carrying plate is higher than the force guiding support 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 compressing part compresses the force guiding support part of the force guiding element. According to the invention, the provided electronic scale can be used both as an electronic weight scale and an electronic kitchen scale; and when the weight of the carried object exceeds a maximum range of the electronic kitchen scale, the kitchen electronic scale can be protected from being damaged effectively.

Description

Safety double precision electronic scale

Technical field

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

The technical scheme realizing the object of the invention is: a kind of safety double precision electronic scale, including support board, for supporting First precision of support board weigh assembly, for supporting support board and weigh the second precision of assembly of the first precision is weighed group Part and weighing power of the leading part of assembly for self pressure is passed to the second precision；First precision is weighed assembly bag Include elastic supporting piece；Each second precision weigh assembly include having storage tank deck, be arranged in storage tank second essence Spend force cell, the apical grafting spike on the second precision force cell, cover storage tank bottom opening and have The spring lid of center positioning hole；Described spike is arranged in the center positioning hole of spring lid；The power part of leading includes being provided with buckling groove Diapire, enclose and form the tubular support wall of vestibule and there is the square bearing plate of four circular support holes；This bearing plate is made For leading power of the leading support of power part, the diapire of support board is as leading power pressure contact portion；The diapire crimping leading power part is arranged on deck On top；Each first precision assembly of weighing is arranged in a corresponding vestibule leading power part, and each first precision is weighed assembly bag Include elastic supporting piece, the first precision force cell and there is the elastomeric cap of center spacing hole；Described elastic supporting piece includes Screw thread spring, it is arranged on the upper supporting part on screw thread spring top, is arranged on the lower supporting part of screw thread spring bottom end；Elastomeric cap Neighboring be arranged on tubular support wall；Upper supporting part is through a corresponding support holes and 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；During free state, power of the leading pressure contact portion of support board 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 leads power pressure contact portion pressure It is connected 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 to carrying object 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 explosive view of 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 perspective view of the first precision force cell in electronic scale shown in Fig. 1；

Fig. 7 is a kind of perspective view when another angle is observed of the first precision force cell shown in Fig. 6；

Fig. 8 is a kind of perspective view of the second precision force cell in electronic scale shown in Fig. 1；

Fig. 9 is a kind of perspective view when another angle is observed of the second precision force cell shown in Fig. 8；

Detailed description of the invention

(embodiment 1)

The present embodiment is a kind of safety double precision electronic scale, as shown in Fig. 1 to Fig. 9, 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 first Weigh four the second precision of assembly of precision are weighed assembly 3 and claiming for self pressure is passed to the second precision Lead power part 4 for four of restructuring part.Display screen 11 and regulation switch 12 in the present embodiment are arranged on bearing plate.

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.In the present embodiment, support The bottom of foot is the least significant end of the present embodiment.

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, It is arranged on the locating surface on tubular support wall inwall and there is the square bearing plate 5 of four circular support holes 51；This load-bearing Plate is in the present embodiment as leading power of the leading support 40 of power part, and the diapire of support board is as leading power pressure contact portion 10.Described Locating surface is a horizontal annular face being radially arranged along tubular support wall 42, and diapire 41 crimping leading power part is arranged on deck On 34 tops.

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；First precision force cell 22 is arranged in the buckling groove leading power part diapire 41；Described elastic supporting piece includes spiral shell Bellows spring 211, it is arranged on the upper supporting part 212 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 bonds solid Being scheduled on the locating surface leading power part, lower supporting part 213 is arranged in the center spacing hole 241 of elastomeric cap, lower supporting part Diapire is crimped on the first precision force cell；Upper supporting part is through a corresponding support holes 51 and is bonded and fixed at load On thing plate diapire.

In the present embodiment, as shown in Fig. 6 and Fig. 7, the first precision force cell 22 is conventional weighing mould for kitchen use Block, its range is 0 to 20 kilogram, and precision 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 led on power part diapire 41, the lower supporting part in elastic supporting piece is crimped on the first load deformations On.

In the present embodiment, as shown in Fig. 8 and Fig. 9, 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.

In the present embodiment, the shape of bearing plate 5 is straight tabular, and its area is more than support board.It practice, the present embodiment In bearing plate serve not only as leading power of the leading support 40 of power part, be alternatively arranged as assist support board use；Such as weigh little thing During body, it is directly placed on support board 1 weighing；As when using for weighing scale, then stand directly on bearing plate 5 Weighing, because sole is the dirtiest, this occupation mode can avoid support board 1 of making dirty.

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, namely during less than 20 kilograms, power of the leading pressure contact portion 10 of support board exceeds power of the leading supporting leading power part all the time Portion 40, support board first passes through elastic supporting piece whole pressure of carrying object and passes to the first precision force cell, The second precision force cell is passed to, now by regulation switch or intelligence then through the first precision force cell Control circuit display screen can be made to show the weight amount weighed the first precision assembly weighs, ignore the second precision and weigh assembly Weighing numerical value, 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 the first precision force cell by elastic supporting piece, passes to the second precision the most again Force cell；Support board is also directly passed to the second precision dynamometry remaining pressure of carrying object by leading power part simultaneously Sensor, owing to, during this, the deformation of elastic supporting piece will not increase again, so support board is applied to the first precision and passes Pressure on sensor will not increase again, by selecting suitable screw thread spring, this partial pressure can be made not over first The elastic deformation tolerance range of precision force cell, namely the first precision force cell will not be damaged.Now by tune Joint switch or intelligent control circuit can make display screen show the second precision weigh assembly weigh weight amount, ignore first Precision is weighed the weighing numerical value of assembly, should during weighing precision can reach 100 grams, so the present embodiment can also be made Use for 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 safety double precision electronic scale, weighs assembly including support board, for supporting the first precision of support board； It is characterized in that: also include for supporting support board and weigh the second precision of assembly of the first precision is weighed assembly, Yi Jiyong Weigh power of the leading part of assembly in self pressure is passed to the second precision；First precision assembly of weighing includes elastic bearing Part；Each 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；Described spike is arranged in the center positioning hole of spring lid；The power part of leading includes being provided with the diapire of buckling groove, enclosing Form the tubular support wall of vestibule and there is the square bearing plate of four circular support holes；This bearing plate is as leading power part Leading power support, the diapire of support board is as leading power pressure contact portion；The diapire crimping leading power part is arranged on deck top；Respectively First precision assembly of weighing is arranged in a corresponding vestibule leading power part, and each first precision assembly of weighing includes elastic bearing Part, the first precision force cell and there is the elastomeric cap of center spacing hole；Described elastic supporting piece include screw thread spring, It is arranged on the upper supporting part on screw thread spring top, is arranged on the lower supporting part of screw thread spring bottom end；The neighboring of elastomeric cap It is arranged on tubular support wall；Upper supporting part is through a corresponding support holes and is bonded and fixed on support board diapire, lower Bearing member is arranged in the center spacing hole of elastomeric cap, and the diapire of lower supporting part is crimped on the first precision force cell；From During by state, power of the leading pressure contact portion of support board exceeds power of the leading support leading power part；During support board carrying object, support board Compression elasticity supporting member under 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 and leads power part Power of leading support on.

Safety double precision electronic scale the most according to claim 1, it is characterised in that: support board stress moves down directly During being crimped on and leading on power part, elastic supporting piece is in elastic deformation state.

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