CN105937951A - Adjustable dual-step weighing sensor - Google Patents
Adjustable dual-step weighing sensor Download PDFInfo
- Publication number
- CN105937951A CN105937951A CN201610097048.8A CN201610097048A CN105937951A CN 105937951 A CN105937951 A CN 105937951A CN 201610097048 A CN201610097048 A CN 201610097048A CN 105937951 A CN105937951 A CN 105937951A
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- China
- Prior art keywords
- mounting seat
- load cells
- spike
- leading
- contact portion
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Classifications
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/62—Over or under weighing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/23—Support or suspension of weighing platforms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
Abstract
The invention discloses an adjustable dual-step weighing sensor comprising a first mounting seat, a first precision weighing sensor, a first support leg, an elastic support element, a second mounting seat, a second precision weighing sensor and a second support leg. The first mounting seat is provided with a guiding and pressing part; and the second mounting seat is provided with a mounting plate part and a guiding and supporting part for transmitting the pressure to the mounting plate part. In addition, the weighing sensor also includes an adjusting mechanism for adjusting the height of the elastic support element. In a free state, the guiding and pressing part is higher than the guiding and supporting part. When forces are exerted on the first mounting seat, the first mounting seat presses the elastic support element and thus moves down; and when the forces exerted on the first mounting seat reach a preset degree, the guiding and pressing part of the first mounting seat moves down and then presses the guiding and supporting part. The adjustable dual-step 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 scalable double rank 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 scalable double rank 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 scalable double rank LOAD CELLS, including crimping the first mounting seat of setting, the first precision LOAD CELLS, first spike, elastic supporting piece, the second mounting seat, the second precision LOAD CELLS and second spike successively；First mounting seat is provided with leads power pressure contact portion；Second mounting seat is provided with mounting plate portion and for self pressure being passed to power of the leading support of mounting plate portion；Also include the governor motion for regulating elastic supporting piece height；The periphery wall of the first mounting seat is provided with the stopper section of evagination, and the periphery wall leading power support is provided with external screw thread district；Governor motion includes regulating spiral cover, and this regulation rotation upper part of the cover inwall is provided with the annular anticreep pressure contact portion of convex, and the inwall of bottom is provided with and leads the internal threaded regions that power support external screw thread district is adaptive；Described anticreep pressure contact portion is set in being positioned on the periphery wall above stopper section of the first mounting seat, and is crimped on stopper section；Under external force, described stopper section can slide up and down between power support top at anticreep pressure contact portion and leading；Under free state, the power pressure contact portion of leading exceeds leads power support；Elasticity of compression supporting member during the first mounting seat pressure-bearing stress and move down；When the first mounting seat pressure-bearing stress is to predeterminable level, the leading of the first mounting seat is defeated and is met subordinate and move to be crimped on and lead on power support.
In technique scheme, governor motion also includes, to top spiral cover, being located at top spiral cover rotation in the external screw thread district leading power support, and apical grafting being on regulation spiral cover.
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 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 first 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 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 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 first precision LOAD CELLS is not further added by; thus effectively protect the first precision LOAD CELLS so that it is will not damage because load is overweight；In addition, the present invention is by selecting spring as 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 rank LOAD CELLS shown in Fig. 1 are in second-order range and weigh a kind of structural representation of state；
Fig. 3 is the first precision LOAD CELLS and a kind of explosive view of first spike in double rank LOAD CELLS shown in Fig. 1；
Fig. 4 is the first precision LOAD CELLS shown in Fig. 3 and first spike 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 second spike in double rank LOAD CELLS shown in Fig. 1；
Fig. 6 is the second precision LOAD CELLS shown in Fig. 5 and second spike 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 rank LOAD CELLS shown in Fig. 7 are in second-order range and weigh a kind of structural representation of state；
Fig. 9 is the second precision LOAD CELLS and a kind of explosive view of second spike in double rank LOAD CELLS shown in Fig. 7；
Figure 10 is the second precision LOAD CELLS shown in Fig. 7 and second spike a kind of explosive view when another angle is observed；
Figure 11 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 12 is a kind of structural representations when removing regulation screw of double rank LOAD CELLS shown in Figure 11；
Figure 13 is a kind of structural representation regulating screw in double rank LOAD CELLS shown in Figure 11；
Figure 14 is that double rank LOAD CELLS shown in Figure 11 are in second-order range and weigh a kind of structural representation of state；
Figure 15 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 16 is that double rank LOAD CELLS shown in Figure 15 are in second-order range and weigh 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 rank LOAD CELLS shown in Figure 17 are in second-order range and weigh a kind of structural representation of state.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of scalable double rank LOAD CELLSs, as shown in Fig. 1 to Fig. 6, including first 2, first spike 3 of mounting seat the 1, first precision LOAD CELLS, elastic supporting piece the 4, second mounting seat the 5, second precision LOAD CELLS 6 and second spike 7 that crimp setting successively.
On the diapire of the first mounting seat, it is provided with power of the leading pressure contact portion 11 of annular and is positioned at the first deck 12 leading power pressure contact portion center；In the present embodiment, described in lead the diapire of power pressure contact portion 11 be a planar annular, the roof of the first mounting seat also 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；First resistance strain gage can be converted into the signal of telecommunication the deformation produced during the first load deformations pressure-bearing stress；Described first fixed part clamping is arranged in the first deck, and the first load deformations crimping is arranged on the top of first spike.
In the present embodiment, the first 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 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 rectangle 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 planform of this first 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 rank LOAD CELLS described in four the present embodiment, the scope of weighing of 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 basic configuration of first spike is cylindrical, and the top of the periphery wall of first spike is provided with the annular pressure contact portion 32 of evagination, and bottom is as traveller portion 33；The roof of first spike is provided with protruding upward two location and couples boss 34, and each location couples boss and is provided with screw；Two straight flanges being positioned at straight flange both sides, center in described three straight flanges of first load deformations, are respectively provided with first fastener hole 221；Two the first screws 31 are rotated with in a corresponding location couples the screw of boss after corresponding first fastener hole 221, thus the top of first spike are spirally connected on the diapire being fixed on the first load deformations.This structure, while realizing first load deformations first spike of crimping, also utilizes the first load deformations direct position first support foot, and its structure more simplifies compact.
In concrete practice, also by anchor mode, the top of first spike can be fixed in the first load deformations, two anchor boss protruding upward are such as set on the roof of first spike, first load deformations arranges two anchor holes, each boss that is anchored passes anchor process after a corresponding anchor hole, and this mode is also effective and feasible.
Second mounting seat is provided with mounting plate portion 51, for self pressure being passed to power of the leading support 52 of mounting plate portion, being positioned at the holding part 56 enclosing formation containing cavity 55 below mounting plate portion.In the present embodiment, leading power support top end face is a planar annular adaptive with leading power pressure contact portion diapire.
Mounting plate portion is horizontally disposed with, and the diapire of mounting plate portion is provided with the second deck 54, and the roof of mounting plate portion is provided with the tube shape bulge 53 with sliding chamber protruding upward；The power support of leading is the annular boss projecting upwards formation from mounting plate portion, and described first spike, elastic supporting piece and tube shape bulge 53 are located in the cavity that this annular boss surrounds.This structure makes to lead power support under coordinating with the first mounting seat; elastic supporting piece, first spike and the first precision LOAD CELLS can be trapped among wherein; elastic supporting piece and the first precision LOAD CELLS had certain protective effect so that it is be not easily susceptible to extraneous factor interference.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, elastic supporting piece is screw thread spring；Elastic supporting piece is set on tube shape bulge, and the top of elastic supporting piece is connected on the diapire of annular pressure contact portion 32 of first spike, and the bottom of elastic supporting piece is connected on the roof of mounting plate portion；The traveller portion 33 of first spike is positioned in the sliding chamber of tube shape bulge, and can slide up and down along sliding chamber.This structure makes the first mounting seat when load pressurized, the first precision LOAD CELLS and first spike can be passed through self bearing pressure transmission to elastic supporting piece, make to be shortened by compression as the screw thread spring of elastic supporting piece, so that the first mounting seat moves down；When the first mounting seat pressure-bearing stress exceedes predeterminable level, power of the leading pressure contact portion of the first mounting seat is crimped on being displaced downwardly on power of the leading support of the second mounting seat.
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 gap on power of the leading pressure contact portion of the first mounting seat and power of the leading support top of the second mounting seat is in suitably sized, 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.
Second precision LOAD CELLS is provided with second fixed part the 61, second load deformations 62 and the second resistance strain gage 63 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, and the second load deformations is less than described mounting plate portion, and for its deformation slot milling, the second load deformations crimping is arranged on the top of second spike.
In the present embodiment, the second 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 rank 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 second precision LOAD CELLS is structurally similar to the first 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 second fixed part be by four edges combination formed rectangular box-like, the shape of the second load deformations is to be combined, by a base and three straight flanges arranging with this base vertical, " mountain " font formed, second load deformations is arranged in the 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 first precision LOAD CELLS and the second precision LOAD CELLS in the present embodiment are suitable for, by impact style processing and manufacturing, advantageously reducing manufacturing cost.
In the present embodiment, 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, thus effectively reduce manufacturing cost.
In the present embodiment, the basic configuration of second spike is cylindric, and its bottom is provided with rubber slipmat 71.Second spike in the present embodiment is fixedly installed on the second precision LOAD CELLS by screw connection manner, and specifically, the top of second spike is provided with two installation screws 72, and the second load deformations is provided with two the second fastener holes 621；The top of second spike is directly anchored on the diapire of the second load deformations by two second screws 73 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 second spike also can be fixedly installed in the second load deformations by anchor mode.Such as, the roof of second spike 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 the two or two spike of crimping, also utilizes the second load deformations directly to position second spike, and its structure more simplifies compact.
In the present embodiment, holding part and mounting plate portion are made into integration, and the second precision LOAD CELLS and second spike are arranged in this containing cavity, and the bottom of second spike also extends downwardly from this containing cavity.The advantage of this structure is to protect the second precision LOAD CELLS and second spike, prevents extraneous factor from disturbing it.The present embodiment is to be formed integrally part, in concrete practice leading power support, mounting plate portion and holding part, it is possible to it each makes split part, is finally assemblied at together, be also feasible.
In the present embodiment, being provided with containing cavity bottom opening at holding part bottom center, this opening part is provided with the capping 58 for blocking containing cavity bottom opening, is provided with center hole 581 at cap central；The bottom of second spike extends downwardly from the center hole of capping, and leave gap between the inwall of the periphery wall of second spike and cap central circular hole, thus ensure that the second mounting seat does not directly contact with second spike, prevent leading power support and self pressure is directly passed to second spike by holding part, it is ensured that lead that power support passes sequentially through mounting plate portion self pressure, the second precision LOAD CELLS passes to second spike.It addition, capping with holding part with the use of, the first precision LOAD CELLS being pointed in containing cavity is preferably protected.
In the present embodiment, the range of the first precision LOAD CELLS is less than the range of the second precision LOAD CELLS, in other words the maximum of the first precision LOAD CELLS value of weighing is less 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, first precision LOAD CELLS pressure can be limited in its range ability, thus prevent the first 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 first 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 the second mounting seat of the first 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 57 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.
The present embodiment also includes the governor motion 8 for regulating elastic supporting piece height；The periphery wall of the first mounting seat is provided with the stopper section 13 of evagination, and the periphery wall leading power support is provided with external screw thread district 521；Governor motion includes regulating spiral cover 81 and to top spiral cover 82；This regulation rotation upper part of the cover inwall is provided with the annular anticreep pressure contact portion 811 of convex, and the inwall of bottom is provided with and leads the internal threaded regions 812 that power support external screw thread district is adaptive；Described anticreep pressure contact portion is set in being positioned on the periphery wall above stopper section of the first mounting seat, and is crimped on stopper section；Top spiral cover rotation is located in the external screw thread district leading power support, in the present embodiment, top spiral cover is positioned at the lower section of regulation spiral cover, and apical grafting is on regulation spiral cover.Under external force, described stopper section can slide up and down between power support top at anticreep pressure contact portion and leading.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 rank LOAD CELLSs due to weighing scale and kitchen scale simultaneously, the spring that concordance is difficult to ensure that will cause the height of four LOAD CELLSs slightly to be distinguished, and impact assembles and uses, even when user picks up electronic scale observation, the most at grade, pole is unsightly in the bottom of each second spike；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.
In the present embodiment, leading power support top and be provided with static contact 91, power of the leading pressure contact portion of the first mounting seat is provided with the moving contact 92 adaptive with this static contact；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:
First mounting seat is in free state namely when not bearing pressure, and the top of the first mounting seat and the power pressure contact portion of leading thereof all exceed the top leading power support；
Compression spring during the first 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, namely first mounting seat bear whole pressure, and pass to the first precision LOAD CELLS successively, first spike, spring, the mounting plate portion of the second mounting seat, second precision LOAD CELLS and second spike；Showing, now by external central control circuit, the data that the first precision LOAD CELLS measures, its accuracy value is up to 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; owing to spring deformation is not further added by; first precision LOAD CELLS stress is not further added by, thus effectively protects the first precision LOAD CELLS will not be because of overweight crushing；Actually, now in the first mounting seat pressure, 5 kilograms (actually this force value size is determined by pre-set springs deformation degree, can be slightly larger than 5 kilograms) are had to pass to the first precision LOAD CELLS, first spike, spring, the mounting plate portion of the second mounting seat, the second precision LOAD CELLS and second spike successively；Remaining pressure is then by leading power pressure contact portion and leading power support and pass to mounting plate portion, the second precision LOAD CELLS and second spike successively；At this moment showing, by central control circuit, the data that the second precision LOAD CELLS measures, its accuracy value only has 100 grams.
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 first 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 substantially the same manner as Example 1, difference is: as shown in Fig. 7 to Figure 10, in the present embodiment, the planform of the second precision LOAD CELLS, second spike and capping is different with embodiment 2, and the second precision LOAD CELLS in the present embodiment is still provided with second fixed part the 61, second load deformations 62 and the second resistance strain gage 63 for detecting the second load deformations deflection being arranged in the second load deformations；But the shape of the second precision LOAD CELLS in the present embodiment is similar to instead " G " font, its second fixed part approximation " C " font, the shape of the second load deformations is similar to less " C " font, and is connected with the second fixed part, and combination forms anti-" G " font.The range of this kind the second 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.
In the present embodiment, the second fixed part in second precision LOAD CELLS is still installed in the second deck on mounting plate portion diapire, the present embodiment no longer uses the second screw that the second load deformations and second spike are spirally connected and are fixed together, but the second load deformations is directly crimped on the top being arranged on second spike；But the assembling mode top of second spike and the second load deformations being joined directly together by screw connection manner is still feasible.
Capping in the present embodiment includes interior cover region 582, outer cover region 583 and connects interior cover region and a plurality of spiral elastic arm 584 of outer cover region, and center hole is arranged at inner cap district center, and the outer wall of second spike is adhesively fixed in centrally disposed circular hole.Little owing to spiral elastic arm can be made sufficiently thin, this kind of structure can fully reduce the power transmitted between second spike outer wall 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 second precision LOAD CELLS, and simplifies assembly operation, can reduce manufacturing cost further.
(embodiment 3)
The present embodiment is substantially the same manner as Example 1, difference is: as shown in Figure 11 to Figure 14, the present embodiment no longer arranges static contact 91 and moving contact 92, and the top of the periphery wall of first spike no longer arranges annular pressure contact portion 32, and bottom is not the most re-used as traveller portion 33 and uses.
In the present embodiment, the center of first spike is provided with adjustment hole 35, the center of the tube shape bulge 53 of mounting plate portion, is additionally provided with the circle from mounting plate portion is protruding upward and couples pylon 59, and the roof center of this connection pylon is provided with connection screw 591；Tube shape bulge couples pylon and encloses formation annular spacing groove 592 with circle；The bottom of spring is positioned at this annular spacing groove, and is connected in mounting plate portion, and the top of spring is connected on the diapire of first spike.
Being used in the present embodiment regulates the governor motion 8 of elastic supporting piece height and no longer includes regulating spiral cover 81 and to top spiral cover 82, only include regulating screw 83, this regulation screw is sequentially provided with the portion of screwing 831, slide connecting part 832 and the spiro union portion 833 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 first spike is stepped hole, is the bigger less slide opening district 352 of crimping porose area 351 and aperture, aperture the most successively, and the diapire of crimping porose area is as electrolysis 353, 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 591 coupling pylon 59；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 832 is then positioned in slide opening district；Under external force, described first spike can slide up and down under the guide effect of regulation screw slide connecting part 832.This structure connects first spike and the mounting plate portion of the second mounting seat by using regulation screw so that first spike and spring will not be lost 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 first mounting seat and power of the leading support of the second mounting seat, its structure comparison compact and reasonable.
(embodiment 4)
The present embodiment is substantially the same manner as Example 4, difference is: as shown in Figure 15 to Figure 16, owing to regulation screw 83 is enclosed Tibetan wherein by the first mounting seat with leading power support, again cannot tune after overall package, so the governor motion 8 in the present embodiment also includes regulating spiral cover 81 and to top spiral cover 82；The periphery wall of the first mounting seat is provided with the stopper section 13 of evagination, and the periphery wall leading power support is provided with external screw thread district 521；This regulation rotation upper part of the cover inwall is provided with the annular anticreep pressure contact portion 811 of convex, and the inwall of bottom is provided with and leads the internal threaded regions 812 that power support external screw thread district is adaptive；Described anticreep pressure contact portion is set in being positioned on the periphery wall above stopper section of the first mounting seat, and is crimped on stopper section；Top spiral cover rotation is located in the external screw thread district leading power support, in the present embodiment, top spiral cover is positioned at the lower section of regulation spiral cover, and apical grafting is on regulation spiral cover.Under external force, described stopper section can slide up and down between power support top at anticreep pressure contact portion and leading.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 rank LOAD CELLSs due to weighing scale and kitchen scale simultaneously, the spring that concordance is difficult to ensure that will cause the height of four LOAD CELLSs slightly to be distinguished, and impact assembles and uses, even when user picks up electronic scale observation, the most at grade, pole is unsightly in the bottom of each second spike；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.
Additionally, in the present embodiment, lead power support top and be provided with static contact 91, power of the leading pressure contact portion of the first mounting seat is provided with the moving contact 92 adaptive with this static contact；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..
(embodiment 5)
The present embodiment is substantially the same manner as Example 5, difference is: as shown in Figure 17 to Figure 18, in the present embodiment, the planform of the second precision LOAD CELLS, second spike and capping is different with embodiment 5, and the second precision LOAD CELLS in the present embodiment is still provided with second fixed part the 61, second load deformations 62 and the second resistance strain gage 63 for detecting the second load deformations deflection being arranged in the second load deformations；But the shape of the second precision LOAD CELLS in the present embodiment is similar to instead " G " font, its second fixed part approximation " C " font, the shape of the second load deformations is similar to less " C " font, and is connected with the second fixed part, and combination forms anti-" G " font.The range of this kind the second 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.
In the present embodiment, the second fixed part in second precision LOAD CELLS is still installed in the second deck on mounting plate portion diapire, the present embodiment no longer uses the second screw that the second load deformations and second spike are spirally connected and are fixed together, but the second load deformations is directly crimped on the top being arranged on second spike；But the assembling mode top of second spike and the second load deformations being joined directly together by screw connection manner is still feasible.
Capping in the present embodiment includes interior cover region 582, outer cover region 583 and connects interior cover region and a plurality of spiral elastic arm 584 of outer cover region, and center hole is arranged at inner cap district center, and the outer wall of second spike is adhesively fixed in centrally disposed circular hole.Little owing to spiral elastic arm can be made sufficiently thin, this kind of structure can fully reduce the power transmitted between second spike outer wall 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 second 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 (2)
1. a scalable double rank LOAD CELLS, it is characterised in that: include crimping successively setting the first mounting seat,
First precision LOAD CELLS, first spike, elastic supporting piece, the second mounting seat, the second precision LOAD CELLS and
Second spike；First mounting seat is provided with leads power pressure contact portion；Second mounting seat is provided with mounting plate portion and for suffered by self
Pressure transmission is to power of the leading support of mounting plate portion；Also include the governor motion for regulating elastic supporting piece height；First
The periphery wall of mounting seat is provided with the stopper section of evagination, and the periphery wall leading power support is provided with external screw thread district；Governor motion
Including regulation spiral cover, this regulation rotation upper part of the cover inwall is provided with the annular anticreep pressure contact portion of convex, the inwall of bottom sets
There is the internal threaded regions adaptive with leading power support external screw thread district；Described anticreep pressure contact portion is set in only being positioned at of the first mounting seat
On periphery wall above stopper, and it is crimped on stopper section；Under external force, described stopper section can be at anticreep pressure contact portion
And lead and slide up and down between power support top；Under free state, the power pressure contact portion of leading exceeds leads power support；First peace
Dress seat pressure-bearing stress time elasticity of compression supporting member and move down；When the first mounting seat pressure-bearing stress is to predeterminable level, the first peace
The leading of dress seat is defeated and is met subordinate and move to be crimped on and lead on power support.
Scalable the most according to claim 1 double rank LOAD CELLS, it is characterised in that: governor motion also includes
To top spiral cover, top spiral cover rotation is located in the external screw thread district leading power support, and apical grafting is on regulation spiral cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097048.8A CN105937951A (en) | 2016-01-20 | 2016-01-20 | Adjustable dual-step weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097048.8A CN105937951A (en) | 2016-01-20 | 2016-01-20 | Adjustable dual-step weighing sensor |
Publications (1)
| Publication Number | Publication Date |
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| CN105937951A true CN105937951A (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097048.8A Withdrawn CN105937951A (en) | 2016-01-20 | 2016-01-20 | Adjustable dual-step weighing sensor |
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| CN (1) | CN105937951A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246433Y (en) * | 2007-10-28 | 2009-05-27 | 辽宁同泽减震器有限公司 | Harmonic tremor peak-avoiding vibration damper |
| CN101865235A (en) * | 2010-07-07 | 2010-10-20 | 南京捷诺环境技术有限公司 | Vibration isolation buffer for resisting strong impact |
| CN201716099U (en) * | 2010-07-06 | 2011-01-19 | 颜海君 | Novel electronic scale |
| CN102980689A (en) * | 2012-11-29 | 2013-03-20 | 昆山洺九机电有限公司 | Overload-proof load sensor |
| CN104838243A (en) * | 2014-07-23 | 2015-08-12 | 王雅苹 | Electronic scale |
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2016
- 2016-01-20 CN CN201610097048.8A patent/CN105937951A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246433Y (en) * | 2007-10-28 | 2009-05-27 | 辽宁同泽减震器有限公司 | Harmonic tremor peak-avoiding vibration damper |
| CN201716099U (en) * | 2010-07-06 | 2011-01-19 | 颜海君 | Novel electronic scale |
| CN101865235A (en) * | 2010-07-07 | 2010-10-20 | 南京捷诺环境技术有限公司 | Vibration isolation buffer for resisting strong impact |
| CN102980689A (en) * | 2012-11-29 | 2013-03-20 | 昆山洺九机电有限公司 | Overload-proof load sensor |
| CN104838243A (en) * | 2014-07-23 | 2015-08-12 | 王雅苹 | Electronic scale |
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Application publication date: 20160914 |