CN105937933A - Double-precision weighing sensor - Google Patents
Double-precision weighing sensor Download PDFInfo
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- CN105937933A CN105937933A CN201610097050.5A CN201610097050A CN105937933A CN 105937933 A CN105937933 A CN 105937933A CN 201610097050 A CN201610097050 A CN 201610097050A CN 105937933 A CN105937933 A CN 105937933A
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- load cells
- precision load
- mounting seat
- supporting part
- spring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
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- Measurement Of Force In General (AREA)
Abstract
The invention discloses a double-precision weighing sensor comprising a first mounting seat, a first precision weighing sensor, a second mounting seat, a second precision weighing sensor and an elastic supporting element. The elastic supporting element consists of an upper support element, a spring, and a lower support element; the top of the spring is abutted against the upper support element and the bottom of the elastic supporting element is abutted against the lower support element. A guiding and pressing part is arranged at the second mounting seat; and a guiding and supporting part is arranged at the lower supporting element. In a free state, the guiding and pressing part is higher than the guiding and supporting part. When a force is exerted on the second mounting seat, the second precision weighing sensor presses the spring and thus the guiding and pressing part is driven to move down; and when the force exerted on the second mounting seat reaches a preset degree, the guiding and pressing part moves down and then presses the guiding and supporting part. The weighing sensor has the continuous dual-step ranges and has different precision values in ranges at all steps.
Description
Technical field
The invention belongs to load cell structure design field, be specifically related to a kind of double precision LOAD CELLS.
Background technology
Body weight electronic scale in the market, its structure mainly includes support board, display screen, regulation button, power module and forms for supporting the LOAD CELLS of support board, its function is mainly used in human body of weighing, and be usually after carrier body weight exceedes preset value, display screen just starts to show numerical value, and this preset value is usually 5 kilograms；It addition, the maximum range of this kind of body weight electronic scale is usually 180 kilograms, accuracy value only has 100 grams, error is bigger, so this traditional body weight electronic scale is 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 accuracy value can reach 1 gram the least, but its range is usually no more than 10 kilograms, uses so cannot function as scale.
Summary of the invention
It is an object of the invention to provide a kind of double precision LOAD CELLS that there is the continuous range in double rank and there is in the range of each rank different accuracy value.
The technical scheme realizing the object of the invention is: a kind of double precision LOAD CELLS, including crimping the first mounting seat of setting, the first precision LOAD CELLS, the second mounting seat, the second precision LOAD CELLS and elastic supporting piece successively；Elastic supporting piece includes upper supporting part, spring and lower supporting part, and the top of spring is connected on upper supporting part, and the bottom of elastic supporting piece is connected on lower supporting part；Second mounting seat is provided with leads power pressure contact portion, and lower supporting part is provided with leads power support；Under free state, the power pressure contact portion of leading exceeds leads power support；By the second precision LOAD CELLS compression spring during the second mounting seat pressure-bearing stress, and then drive to lead to defeat and meet subordinate and move, when the second mounting seat pressure-bearing stress is to predeterminable level, lead to defeat meeting subordinate and move to be crimped on and lead on power support.
In such scheme, the outer wall of the second mounting seat is provided with the clamping installation portion for installing self entirety.
In such scheme, the range of the first precision LOAD CELLS is more than the range of the second precision LOAD CELLS.
When the present invention weighs in the first rank range, namely the power pressure contact portion of leading not yet is displaced downwardly to be crimped on when leading on power support, although the first precision LOAD CELLS and the second precision LOAD CELLS stress simultaneously, but the second independent check weighing of precision LOAD CELLS can be utilized, namely externally connected with display screen only shows the data that the second precision LOAD CELLS measures, its accuracy value is the accuracy value of the second precision LOAD CELLS, general uses higher precision, and such as accuracy value is 1 gram or less；When weighing in the second range, namely lead to defeat and meet subordinate and move to be crimped on when leading on power support, although the first precision LOAD CELLS and the second precision LOAD CELLS stress simultaneously, but the first independent check weighing of precision LOAD CELLS can be utilized, namely externally connected with display screen only shows the data that the first precision LOAD CELLS measures, its accuracy value is the accuracy value of the second precision LOAD CELLS, general uses relatively low precision, and such as accuracy value is 100 grams or bigger；Additionally; when the present invention weighs in second-order range ability; now lead to defeat and meet subordinate and move to be crimped on and lead on power support; spring deformation is not further added by; namely the pressure being applied on the second precision LOAD CELLS is not further added by; thus effectively protect the second precision LOAD CELLS so that it is will not damage because load is overweight；In addition, the present invention is by selecting spring as the core of elastic supporting piece, can make to lead power pressure contact portion by selecting suitable spring and lead there is between power support suitable clearance distance, the requirement on machining accuracy to the second mounting seat and elastic supporting piece can be reduced, can guarantee that again comfort during use.
Accompanying drawing explanation
Fig. 1 is that the first structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Fig. 2 is that double precision LOAD CELLS shown in Fig. 1 is in second-order range and weighs a kind of structural representation of state；
Fig. 3 is the first precision LOAD CELLS and a kind of explosive view of the first screw in double precision LOAD CELLS shown in Fig. 1；
Fig. 4 is the first precision LOAD CELLS shown in Fig. 3 and first screw a kind of explosive view when another angle is observed；
Fig. 5 is the second precision LOAD CELLS and a kind of explosive view of upper supporting part in double precision LOAD CELLS shown in Fig. 1；
Fig. 6 is the second precision LOAD CELLS shown in Fig. 5 and the upper supporting part a kind of explosive view when another angle is observed；
Fig. 7 is that the second structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Fig. 8 is that double precision LOAD CELLS shown in Fig. 7 is in second-order range and weighs a kind of structural representation of state；
Fig. 9 is that the third structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Figure 10 is that double precision LOAD CELLS shown in Fig. 9 is in second-order range and weighs a kind of structural representation of state；
Figure 11 is the first precision LOAD CELLS and a kind of explosive view of capping in double precision LOAD CELLS shown in Fig. 9；
Figure 12 is the first precision LOAD CELLS shown in Figure 11 and the capping a kind of explosive view when another angle is observed；
Figure 13 is that the 4th kind of structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Figure 14 is a kind of structural representation when removing regulation screw and spring of the double precision LOAD CELLS shown in Figure 13；
Figure 15 is a kind of structural representation regulating screw in double precision LOAD CELLS shown in Figure 13；
Figure 16 is that double precision LOAD CELLS shown in Figure 13 is in second-order range and weighs a kind of structural representation of state；
Figure 17 is that the 5th kind of structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Figure 18 is that double precision LOAD CELLS shown in Figure 17 is in second-order range and weighs a kind of structural representation of state；
Figure 19 is that the 6th kind of structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Figure 20 is that double precision LOAD CELLS shown in Figure 19 is in second-order range and weighs a kind of structural representation of state.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of double precision LOAD CELLS, as shown in Fig. 1 to Fig. 6, including the first mounting seat the 1, first precision LOAD CELLS the 2, second mounting seat the 3, second precision LOAD CELLS 4 and the elastic supporting piece 5 crimping setting successively；Elastic supporting piece includes upper supporting part 51, screw thread spring 52 and lower supporting part 53.The top of spring is connected on upper supporting part, and the bottom of elastic supporting piece is connected to lower supporting part；Lower supporting part is provided with leads power support 531.
The diapire of the first mounting seat is provided with the first deck 11, and the roof of the first mounting seat has a plane, for being bonded and fixed at the diapire of external support board；First precision LOAD CELLS is provided with first fixed part the 21, first load deformations 22 and the first resistance strain gage 23 being arranged in the first load deformations, and the first resistance strain gage can be converted into the signal of telecommunication the deformation produced during the first load deformations pressure-bearing stress；First fixed part clamping is arranged in the first deck, and this clamping arranges the assembly operation that can simplify the first precision LOAD CELLS；Second mounting seat is provided with leads power pressure contact portion 31 and mounting plate portion 32, and mounting plate portion is horizontally disposed with, and the power pressure contact portion of leading is the annular boss being downwardly projected formation from mounting plate portion, and the center of mounting plate portion diapire is provided with the second deck 33；Second precision LOAD CELLS is provided with second fixed part the 41, second load deformations 42 and the second resistance strain gage 43 being arranged in the second load deformations, and the second resistor disc is for being converted into the signal of telecommunication the deformation of the second load deformations；Second fixed part clamping is arranged in the second deck；First load deformations crimping of the first precision LOAD CELLS is arranged in the mounting plate portion of the second mounting seat, and the second load deformations crimping of the second precision LOAD CELLS is arranged on upper supporting part.The existence of the first deck and the second deck is so that the installation of the first precision LOAD CELLS and the second precision LOAD CELLS operates more rapid and convenient.
In the present embodiment, the second precision force cell is LOAD CELLS for kitchen use, and its range is 0 to 5 kilogram, and accuracy value can reach 1 gram, for the present embodiment, using the scope of weighing of 0 kilogram to 5 kilogram as the first rank range of the present embodiment；Specifically, the shape of described second fixed part be by four edges combination formed rectangular box-like, the shape of the second load deformations is to be combined, by two bases and three straight flanges arranging with this base vertical, " mountain " font formed, second load deformations is arranged in the rectangle frame of the second fixed part, and the inner side edge wall of the end of the center straight flange in three straight flanges of described second load deformations and a frame middle-end of the second fixed part is connected.The planform of this second precision LOAD CELLS is relatively reasonable, it is easy to by impact style processing and manufacturing, and cost is relatively low.
When being used for manufacturing electronic scale, it is generally required to the double precision LOAD CELLS described in four the present embodiment, the first rank range of its finished product is 0 to 20 kilogram, can meet the demand that daily small articles is weighed.
In the present embodiment, the first precision LOAD CELLS is human body weighing's sensor, and its range is 0 kilogram to 50 kilograms, and accuracy value is 100 grams, for the present embodiment, using the scopes of weighing of 5 kilograms to 50 kilograms as the second-order range of the present embodiment；When being used for manufacturing electronic scale, it is generally required to the double precision LOAD CELLS described in four the present embodiment, the second-order range of its finished product is 20 to 200 kilograms, can meet the demand of human body weighing.
In the present embodiment, the first precision LOAD CELLS is structurally similar to the second precision LOAD CELLS, but bigger than the first precision LOAD CELLS on the thickness of size and sheet material used.Specifically, the shape of described first fixed part be by four edges combination formed rectangular box-like, the shape of the first load deformations is to be combined, by a base and three straight flanges arranging with this base vertical, " mountain " font formed, first load deformations is arranged in the frame of the first fixed part, and the inner side edge wall of the end of the center straight flange in three straight flanges of described first load deformations and a frame middle-end of the first fixed part is connected.The first precision LOAD CELLS and the first precision LOAD CELLS in the present embodiment are suitable for, by impact style processing and manufacturing, advantageously reducing manufacturing cost.It addition, the first precision LOAD CELLS used and the second precision LOAD CELLS may be used without the force cell the most widely circulated and price is the cheapest in the present embodiment, thus effectively reduce manufacturing cost.
In the present embodiment, first load deformations is provided with two the first fastener holes 221, the roof of the mounting plate portion of the second mounting seat is provided with two fastening screws adaptive with the first fastener hole, and the first load deformations is spirally connected on the roof being fixed on mounting plate portion by two the first screws 24 adaptive with fastening screw.Specifically, two straight flanges being positioned at straight flange both sides, center in described three straight flanges of first load deformations, it is respectively provided with first fastener hole 221；Two the first screws are rotated with in corresponding fastening screw after corresponding first fastener hole, thus on the diapire being fixed on the first load deformations that is spirally connected of mounting plate portion.This structure, while realizing the first load deformations crimping mounting plate portion, also utilizes the first load deformations direct location and installation plate portion, and its structure more simplifies compact.In concrete practice, also by anchor mode, the top of mounting plate portion can be anchored on the diapire of the first load deformations, two anchor boss protruding upward are such as set on the roof of mounting plate portion, first load deformations arranges two anchor holes, each boss that is anchored passes anchor process after a corresponding anchor hole, and this anchor mode is also effective and feasible.
In the present embodiment, the roof of upper supporting part is spirally connected on the diapire being arranged on the second load deformations by two the second screws 44；Specifically, the top of upper supporting part is provided with two installation screws 514, and the second load deformations is provided with two second fastenings 421；The top of upper supporting part is directly anchored on the diapire of the second load deformations by two second screws 44 adaptive with installation screw.In the present embodiment, two straight flanges being positioned at straight flange both sides, center in described three straight flanges of second load deformations, it is respectively provided with second fastener hole.Certainly, described upper supporting part also can be fixedly installed on the diapire of the second load deformations by anchor mode.Such as, the roof of upper supporting part arranges two anchor boss protruding upward, after each anchor boss passes corresponding second fastener hole, then carry out anchoring process.This structure, while realizing the second load deformations crimping upper supporting part, also utilizes the second load deformations directly to position upper supporting part, and its structure more simplifies compact.
The periphery wall on upper supporting part top is provided with the annular pressure contact portion 511 of evagination, and the bottom of upper supporting part is provided with spacing traveller portion 512；The basic configuration of lower supporting part is discoideus, and the center is provided with the tube shape bulge 532 with sliding chamber projecting upwards formation；Spring housing is located on tube shape bulge, and the top of spring is connected on the annular pressure contact portion of upper supporting part；The spacing traveller portion 512 of upper supporting part can slide up and down in the sliding chamber of tube shape bulge 532, namely plays guide effect.Leading and have the annular bearing surface adaptive with leading power pressure contact portion on the roof of power support, tube shape bulge is positioned at the center of this annular bearing surface.
In the present embodiment, leading power pressure contact portion and mounting plate portion is made into integration, and enclose formation one cavity, the second deck, the second precision LOAD CELLS and upper supporting part are respectively positioned in this cavity.The advantage of this structure is to protect the second precision LOAD CELLS and upper supporting part, prevents extraneous factor from disturbing it.In concrete practice, it is possible to power pressure contact portion will be led and mounting plate portion each makes split part, and be finally assemblied at together, be also feasible.
Under free state, the power pressure contact portion of leading exceeds leads power support；When the second mounting seat pressure-bearing stress by the second precision LOAD CELLS compression spring, and then drive to lead to defeat and meet subordinate and move, when the second mounting seat pressure-bearing stress is to predeterminable level, lead to defeat meeting subordinate and move to be crimped on and lead on power support.
This relatively reasonable in structure, preferably spring can be accurately positioned, prevent its eccentric displacement, it addition, this structure is especially suitable for quickly assembling and later maintenance replacing.In addition, this structure is also fully utilized by the performance advantage of spring, by selecting suitable spring, so that during free state, the bottom of power of the leading pressure contact portion of the second mounting seat is in suitably sized with the gap on power of the leading support top of lower supporting part, it is generally preferred 1 millimeter to 5 millimeters, preferably preferred size is 2 millimeters to 3 millimeters, significantly can fall to people when human body weighs sense in excessive gap, because power of leading pressure contact portion now have to be displaced downwardly to be crimped on lead on power support, namely move down whole above-mentioned gap size；Too small gap may require that higher machining accuracy, improves technology difficulty and manufacturing cost.
In the present embodiment, the range of the first precision LOAD CELLS is greater than the range of the second precision LOAD CELLS, in other words the maximum of the first precision LOAD CELLS value of weighing is greater than the maximum of the second precision LOAD CELLS and weighs value, by choosing suitable spring, and select suitable power of leading pressure contact portion and the distance led between power support, second precision LOAD CELLS pressure can be limited in its range ability, thus prevent the second precision LOAD CELLS because of overweight and by crushing；The advantage of this limiter protected mode is: owing to the elastic deformation of strain gauge load cell is the least; such as in the present embodiment, the deformation difference in height in the whole range of the second precision LOAD CELLS is calculated in microns; if using rigid support to replace the spring in the present embodiment; then the gap between power of leading pressure contact portion and power of the leading support of lower supporting part of the second mounting seat also must be weighed with micron; this is the most too high to requirement on machining accuracy; and the material caused in view of the error in materials processing molding and the temperature difference expands change, industrial it is difficulty with；If but use spring to amplify deformation, just can effectively reduce requirement on machining accuracy and manufacturing cost.
The outer wall of the present embodiment the second mounting seat is provided with the clamping installation portion 34 for installing self entirety, and this clamping installation portion is the wedge shape latch outwardly formed from the second mounting seat outer wall.The present embodiment is in use, the general plastic feet with internal circuit board and power module with the use of, the advantage of this structure is, if reserving hole clipping in plastic feet, then directly can be installed in hole clipping by this clamping installation portion, its assembly operation is very convenient fast.
In the present embodiment, the power support of leading is provided with static contact 71, and the power pressure contact portion of leading is provided with moving contact 72, when this lead power pressure contact portion be crimped on lead on power support time, moving contact crimping be arranged on static contact, both realize electrical connection.In concrete practice, when moving contact and static contact electrical contact, produces one signal of telecommunication to connected external central control circuit, when central control circuit receives this signal, show the data that the second precision LOAD CELLS measures on a display screen；When central control circuit does not receives this signal, show the data that the first precision LOAD CELLS measures on a display screen；In other words, this dynamic/static contact combines the signal switch automatically can changed as display screen video data；This structure, can simplify the programming of CPU element in central control circuit.In concrete practice, also can use other structure, replace the combination of this dynamic/static contact for example with tongue tube, proximity switch etc..
The operation principle of the present embodiment is:
The pressure that first mounting seat affords self all passes to the mounting plate portion of the second mounting seat by the first precision LOAD CELLS；Second mounting seat is in free state namely when not bearing pressure, and it is led power pressure contact portion and exceeds power of the leading support of lower supporting part；
Compression spring during the second mounting seat pressure-bearing stress thus move down, when the first mounting seat pressure-bearing stress is less than 5 kilogram, namely time in the first rank range ability, by selecting suitable spring and selecting suitable power of leading pressure contact portion and lead the spacing of power support, during so that weigh in this rank range, the power pressure contact portion of leading will not be crimped onto and cause on support, now mounting plate portion suffered by self all pressure transmission give the second precision LOAD CELLS, during Gai, first precision LOAD CELLS and the second precision LOAD CELLS all bear whole pressure, but external display screen only shows the data that the second precision LOAD CELLS measures, its accuracy value is the accuracy value that the second precision LOAD CELLS has, in the present embodiment, accuracy value in this range is 1 gram；
When the first mounting seat pressure-bearing stress is less than 50 kilograms and is more than or equal to 5 kilogram, namely time in second-order range ability, the power pressure contact portion of leading can be crimped on leads on power support, the pressure that now the second mounting seat is born, only having sub-fraction and pass to the second precision LOAD CELLS, remaining major part is then directly passed on power of the leading support of lower supporting part by leading power pressure contact portion；Due to during this, first precision LOAD CELLS bears whole pressure, so external display screen only shows the data that the first precision LOAD CELLS measures, its accuracy value is the accuracy value that the first precision LOAD CELLS has, in the present embodiment, the accuracy value in this range is 100 grams；In this second-order range ability, the deformation of spring no longer increases, namely the pressure that the second precision LOAD CELLS is born is in preset range, so that the second precision LOAD CELLS will not damage because of overweight during Gai.
The structure design of the present embodiment is relatively reasonable, it is possible to reduces requirement on machining accuracy, reduces manufacturing cost and technology difficulty；Additionally can also effectively prevent the second precision LOAD CELLS because of overweight and crushing；In addition the outer wall of the present embodiment the second mounting seat is provided with the clamping installation portion for installing self entirety, when assembling, can entire card be contained on external plastic feet, facility simple to operation.
(embodiment 2)
The present embodiment is essentially identical with above-described embodiment 1, and difference is: as shown in Fig. 7 to Fig. 8, and the present embodiment also includes the governor motion 6 for regulating elastic supporting piece whole height；The periphery wall of lower supporting part is provided with the stopper section 533 of evagination, and the periphery wall leading power pressure contact portion is provided with external screw thread district 311；Governor motion includes regulating spiral cover 61 and to top spiral cover 62, and the inwall of this regulation spiral cover bottom is provided with the annular anticreep pressure contact portion 611 of convex, and the inwall on top is provided with and leads the internal threaded regions 612 that power pressure contact portion external screw thread district is adaptive；Described anticreep pressure contact portion is set in being positioned on the periphery wall below stopper section of lower supporting part, is also screwed in top spiral cover in the external screw thread district leading power pressure contact portion, is positioned at the top of regulation spiral cover, and is connected to regulate on spiral cover；Under external force, described stopper section can slide up and down between power support top leading power pressure contact portion bottom and leading.During free state, lower supporting part is under the reseting elasticity effect of spring, make its anticreep pressure contact portion apical grafting on stopper section, when the first mounting seat pressure-bearing stress, stress is shortened by spring, power of the leading pressure contact portion of the second mounting seat moves down by drive regulation spiral cover with to top spiral cover, and anticreep pressure contact portion 611 now moves down the most therewith, is positioned at the lower section of stopper section 533.
The advantage of this kind of structure is: in concrete practice, spring is owing to being restricted by its processing technique, its concordance is difficult to ensure that, typically can use four double precision LOAD CELLSs due to weighing scale and kitchen scale simultaneously, the spring that concordance is difficult to ensure that may result in the height of four LOAD CELLSs and slightly distinguishes, and impact assembles and uses, even when user picks up electronic scale observation, the bottom of each lower supporting part may not at grade, and pole is unsightly；The present embodiment uses governor motion to adjust the whole height of elastic supporting piece, even if so that the present embodiment uses the slightly larger spring of error, also has only to a regulation spiral cover to be rotated in place, can ensure the concordance of whole height.It addition, this structure is so that the present embodiment is in whole attached state, will not be scattered mutually and cause losing parts.
(embodiment 3)
The present embodiment is essentially identical with above-described embodiment 2, difference is: as shown in Fig. 9 to Figure 12, and the first precision LOAD CELLS in the present embodiment is still provided with the first fixed part, the first load deformations and the first resistance strain gage for detecting the first load deformations deflection being arranged in the first load deformations；But the shape of the first precision LOAD CELLS in the present embodiment is similar to instead " G " font, its first fixed part approximation " C " font, the shape of the first load deformations is similar to less " C " font, and is connected with the first fixed part, and combination forms anti-" G " font.The range of this kind the first precision LOAD CELLS is the most same as in Example 1 with accuracy value, and this structure also can be made by impact style, and its manufacturing process is simpler.The bottom adhesive of the first mounting seat is fixed with capping 12, and capping and the first mounting seat enclose formation one containing cavity 13, and the first deck and the first precision LOAD CELLS are positioned in this containing cavity；Capping includes center hole 121, interior cover region 122, outer cover region 123 and connects interior cover region and a plurality of spiral elastic arm 124 of outer cover region, and center hole is arranged at inner cap district center；The center of mounting plate portion is provided with the cylinder table 321 projecting upwards formation, and the periphery wall of cylinder table is bonded and fixed in center hole, and the first load deformations crimping is arranged on the roof of cylinder table.Capping with holding part with the use of, the first precision LOAD CELLS being pointed in containing cavity is preferably protected.Additionally, little owing to spiral elastic arm can be made sufficiently thin, this kind of structure can fully reduce the power transmitted between the cylinder table 321 of the first mounting seat and the second mounting seat by capping so that it is the error caused affects for the precision in second-order range, reaches the degree ignored.
The present embodiment reduce further the structural requirement to the first precision LOAD CELLS, and simplifies assembly operation, can reduce manufacturing cost further.
(embodiment 4)
The present embodiment is substantially the same manner as Example 1, and difference is: as shown in Figure 13 to Figure 16, and the present embodiment no longer arranges static contact and moving contact, and the periphery wall of upper supporting part no longer arranges annular pressure contact portion, and bottom is not the most re-used as traveller portion and uses.
In the present embodiment, the center of upper supporting part is provided with adjustment hole 513, the center of the tube shape bulge of lower supporting part, is additionally provided with the circle from mounting plate portion is protruding upward and couples pylon 534, and the roof center of this connection pylon is provided with connection screw 535；Tube shape bulge couples pylon and encloses formation annular spacing groove 536 with circle；The bottom of spring is positioned at this annular spacing groove, and is connected on lower supporting part, and the top of spring is connected on the diapire of upper supporting part.
Being used in the present embodiment regulates the governor motion of elastic supporting piece height and only includes regulating screw 63, this regulation screw is sequentially provided with the portion of screwing 631, slide connecting part 632 and the spiro union portion 633 adaptive with adjustment hole from top to bottom, screwing the external diameter external diameter more than slide connecting part in portion, the shape of slide connecting part is the cylinder that outer wall is smooth；The adjustment hole of described upper supporting part is stepped hole, is the bigger less slide opening district 5132 of crimping porose area 5131 and aperture, aperture the most successively, and the diapire of crimping porose area is as electrolysis 5133, and slide opening district is the circular hole that hole wall is smooth；Described spiro union portion is spirally connected and is fixed in the connection screw coupling pylon；During free state, under the top pressure effect of spring, the portion of screwing is positioned in crimping porose area, and the diapire screwing portion is crimped on the diapire of crimping porose area, namely on described electrolysis；Slide connecting part is then positioned in slide opening district；Under external force, slide connecting part can slide up and down in slide opening district, so that upper supporting part can move up and down under the guide effect of regulation screw slide connecting part.This structure connects upper supporting part and lower supporting part by using regulation screw so that elastic supporting piece will not lose parts because of split；Simultaneously by this regulation screw of turn, can directly adjust the clearance distance between power of the leading pressure contact portion of the second mounting seat and power of the leading support of lower supporting part, its structure comparison compact and reasonable.
(embodiment 5)
The present embodiment is substantially the same manner as Example 4, difference is: as shown in Figure 17 to Figure 18, owing to regulation screw is enclosed Tibetan wherein by the second mounting seat and lower supporting part, it is impossible to again tune after overall package, so the governor motion in the present embodiment also includes regulating spiral cover 61 and to top spiral cover 62；The periphery wall of lower supporting part is provided with the stopper section 533 of evagination, and the periphery wall leading power pressure contact portion is provided with external screw thread district 311；The inwall of regulation spiral cover bottom is provided with the annular anticreep pressure contact portion 611 of convex, and the inwall on top is provided with and leads the internal threaded regions 612 that power pressure contact portion external screw thread district is adaptive；Described anticreep pressure contact portion is set in being positioned on the periphery wall below stopper section of lower supporting part, is also screwed in top spiral cover in the external screw thread district leading power pressure contact portion, is positioned at the top of regulation spiral cover, and is connected to regulate on spiral cover；Under external force, described stopper section can slide up and down between power support top leading power pressure contact portion bottom and leading.During free state, lower supporting part is under the reseting elasticity effect of spring, make its anticreep pressure contact portion apical grafting on stopper section, when the first mounting seat pressure-bearing stress, stress is shortened by spring, power of the leading pressure contact portion of the second mounting seat moves down by drive regulation spiral cover with to top spiral cover, and anticreep pressure contact portion 611 now moves down the most therewith, is positioned at the lower section of stopper section 533.
The advantage of this kind of structure is: in concrete practice, spring is owing to being restricted by its processing technique, its concordance is difficult to ensure that, typically can use four double precision LOAD CELLSs due to weighing scale and kitchen scale simultaneously, the spring that concordance is difficult to ensure that may result in the height of four LOAD CELLSs and slightly distinguishes, and impact assembles and uses, even when user picks up electronic scale observation, the bottom of each lower supporting part may not at grade, and pole is unsightly；The present embodiment uses governor motion to adjust the whole height of elastic supporting piece, even if so that the present embodiment uses the slightly larger spring of error, also has only to a regulation spiral cover to be rotated in place, can ensure the concordance of whole height.It addition, this structure is so that the present embodiment is in whole attached state, will not be scattered mutually and cause losing parts.
(embodiment 6)
The present embodiment is substantially the same manner as Example 5, difference is: as shown in Figure 19 to Figure 20, and the first precision LOAD CELLS in the present embodiment is still provided with the first fixed part, the first load deformations and the first resistance strain gage for detecting the first load deformations deflection being arranged in the first load deformations；But the shape of the first precision LOAD CELLS in the present embodiment is similar to instead " G " font, its first fixed part approximation " C " font, the shape of the first load deformations is similar to less " C " font, and is connected with the first fixed part, and combination forms anti-" G " font.The range of this kind the first precision LOAD CELLS is the most same as in Example 1 with accuracy value, and this structure also can be made by impact style, and its manufacturing process is simpler.The bottom adhesive of the first mounting seat is fixed with capping 12, and capping and the first mounting seat enclose formation one containing cavity 13, and the first deck and the first precision LOAD CELLS are positioned in this containing cavity；Capping includes center hole 121, interior cover region 122, outer cover region 123 and connects interior cover region and a plurality of spiral elastic arm 124 of outer cover region, and center hole is arranged at inner cap district center；The center of mounting plate portion is provided with the cylinder table 321 projecting upwards formation, and the periphery wall of cylinder table is bonded and fixed in center hole, and the first load deformations crimping is arranged on the roof of cylinder table.Capping with holding part with the use of, the first precision LOAD CELLS being pointed in containing cavity is preferably protected.Additionally, little owing to spiral elastic arm can be made sufficiently thin, this kind of structure can fully reduce the power transmitted between the cylinder table 321 of the first mounting seat and the second mounting seat by capping so that it is the error caused affects for the precision in second-order range, reaches the degree ignored.
The present embodiment reduce further the structural requirement to the first precision LOAD CELLS, and simplifies assembly operation, can reduce manufacturing cost further.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the obvious change that these connotations belonging to the present invention are extended out or variation still fall within protection scope of the present invention.
Claims (3)
1. a double precision LOAD CELLS, it is characterised in that: include crimping successively the first mounting seat of setting, first
Precision LOAD CELLS, the second mounting seat, the second precision LOAD CELLS and elastic supporting piece；Elastic supporting piece includes
Supporting member, spring and lower supporting part, the top of spring is connected on upper supporting part, and the bottom of elastic supporting piece is connected to down
On supporting member；Second mounting seat is provided with leads power pressure contact portion, and lower supporting part is provided with leads power support；Under free state, lead power
Pressure contact portion exceeds leads power support；By the second precision LOAD CELLS compression spring during the second mounting seat pressure-bearing stress, enter
And drive lead defeat connect subordinate move, when the second mounting seat pressure-bearing stress is to predeterminable level, lead defeat connect subordinate move to crimping
Leading on power support.
Double precision LOAD CELLS the most according to claim 1, it is characterised in that: on the outer wall of the second mounting seat
It is provided with the clamping installation portion for installing self entirety.
Double precision LOAD CELLS the most according to claim 1, it is characterised in that: the first precision LOAD CELLS
Range more than the range of the second precision LOAD CELLS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097050.5A CN105937933A (en) | 2016-01-20 | 2016-01-20 | Double-precision weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097050.5A CN105937933A (en) | 2016-01-20 | 2016-01-20 | Double-precision weighing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105937933A true CN105937933A (en) | 2016-09-14 |
Family
ID=57153078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097050.5A Withdrawn CN105937933A (en) | 2016-01-20 | 2016-01-20 | Double-precision weighing sensor |
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| Country | Link |
|---|---|
| CN (1) | CN105937933A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1371954A2 (en) * | 2002-06-14 | 2003-12-17 | Soehnle-Waagen GmbH & Co. KG | Scale |
| CN201251473Y (en) * | 2008-07-07 | 2009-06-03 | 广州电测仪器厂 | Integrated self-supporting weighing sensor |
| CN103024112A (en) * | 2012-12-31 | 2013-04-03 | 温州市海宝仪器有限公司 | Method for weighing by cellphone and cellphone electronic scale |
| CN203824632U (en) * | 2013-12-27 | 2014-09-10 | 苏州市海神达机械科技有限公司 | Novel multifunctional electronic scale |
| CN104838243A (en) * | 2014-07-23 | 2015-08-12 | 王雅苹 | Electronic scale |
-
2016
- 2016-01-20 CN CN201610097050.5A patent/CN105937933A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1371954A2 (en) * | 2002-06-14 | 2003-12-17 | Soehnle-Waagen GmbH & Co. KG | Scale |
| CN201251473Y (en) * | 2008-07-07 | 2009-06-03 | 广州电测仪器厂 | Integrated self-supporting weighing sensor |
| CN103024112A (en) * | 2012-12-31 | 2013-04-03 | 温州市海宝仪器有限公司 | Method for weighing by cellphone and cellphone electronic scale |
| CN203824632U (en) * | 2013-12-27 | 2014-09-10 | 苏州市海神达机械科技有限公司 | Novel multifunctional electronic scale |
| CN104838243A (en) * | 2014-07-23 | 2015-08-12 | 王雅苹 | Electronic scale |
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Application publication date: 20160914 |