WO2001004587A1 - Kraftmesselement für eine waage - Google Patents
Kraftmesselement für eine waage Download PDFInfo
- Publication number
- WO2001004587A1 WO2001004587A1 PCT/EP2000/006011 EP0006011W WO0104587A1 WO 2001004587 A1 WO2001004587 A1 WO 2001004587A1 EP 0006011 W EP0006011 W EP 0006011W WO 0104587 A1 WO0104587 A1 WO 0104587A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recess
- measuring element
- force measuring
- force
- strain gauge
- Prior art date
Links
Classifications
-
- 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
- G01G3/1412—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being parallelogram shaped
Definitions
- the invention relates to a force measuring element for a balance of the type specified in the preamble of claim 1.
- a force measuring element is known from DE 38 02 153 C2.
- the object of the invention is to further improve the linearity of the dependence of the measurement signal derived by means of strain gauges on the force introduced.
- Figure 1 is a schematic representation of a scale with a force measuring element 10
- Figure 2 is a perspective view of the force measuring element
- FIG. 3 shows the side view of a section along the line III-III in Fig. 2;
- FIG. 4 shows an arrangement of a balance with 4 force measuring elements 10
- FIG. 5 shows the connection of the 4 force measuring elements to a Wheatstone bridge according to the prior art
- Figure 6 shows the connection of 4 force measuring elements to a Wheatstone 'see bridge with an embodiment of the invention.
- Fig. 1 shows schematically the structure of a scale.
- Four levers 3, 4, 5, 6 are suspended from the edge 1 of a box 2.
- the levers 5 and 6 engage by means of a hanger 7, 8 on the levers 3, 4 approximately at their center.
- the levers 3, 4 are connected to one another at their free end and there they carry a pin 19 which acts on a force measuring element 10.
- the levers 3 to 6 are in turn loaded at the points indicated by arrows from a plate (not shown) over the cutting edge and pan.
- FIG. 2 shows the force measuring element 10. It is formed by two outer bars 11, 12 and an inner bar 13, which are arranged parallel to one another, have the same length and are connected to one another by a cross bar 14. The shape is E-shaped when viewed from above. As can be seen in FIG. 1, the outer ends of the beams 11, 12 are fastened to a bracket 15 which has a recess 15 'in the middle by means of a recess 15', so that the central beam 13 can lower.
- the force measuring element 10 takes up the load through the pin 19, which is connected to the levers 3 and 4 at their front connection.
- the bars 11, 12, 13 are each provided with an opening 25. This is formed by a circular region 25 'and an oval region 25''which are connected to one another.
- the markedly reduced material cross sections result in bending points 40, 41, 42, 43 (cf. FIG. 3). These result in a parallelogram that bends under load. In this case, the section 50 also deforms in the upper region of the beam 13. Above the opening 25 ′′, a strain gauge 20 is glued on, the electrical resistance of which changes when the region 50 of the Force measuring element 10 (train or pressure) changes
- a recess 51 with a rectangular cross-section open at the top.
- the dimensions are, for example, as follows:
- the length of the beam 13 is approximately 6.6 mm
- 3 has a length (a) of approximately 13 mm and a height of approximately 3.5 mm.
- the width of the two outer bars 10, 11 is approximately 6 mm.
- the width of the middle bar is approx. 12 mm.
- the recess 51 weakens the area 50 above the opening 25.
- FIG. 4 four force measuring elements can be arranged on the edges of a plate 60.
- the force measuring elements can then be connected together to derive a measuring signal in a Wheatstone bridge.
- two force measuring elements had to be arranged in each branch of the Wheatstone 'bridge, in order to create an area Z which is subjected to tension and an area D which is subjected to pressure (respectively with a strain gauge) so that the compensation described could take effect.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Force In General (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20023524U DE20023524U1 (de) | 1999-07-10 | 2000-06-28 | Kraftmesselement für eine Waage |
EP00940411A EP1194753A1 (de) | 1999-07-10 | 2000-06-28 | Kraftmesselement für eine waage |
US10/043,782 US20020104690A1 (en) | 1999-07-10 | 2002-01-09 | Load-sensing element for a scale |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19932289.9 | 1999-07-10 | ||
DE19932289A DE19932289C1 (de) | 1999-07-10 | 1999-07-10 | Kraftmesselement für eine Waage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/043,782 Continuation US20020104690A1 (en) | 1999-07-10 | 2002-01-09 | Load-sensing element for a scale |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001004587A1 true WO2001004587A1 (de) | 2001-01-18 |
Family
ID=7914331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006011 WO2001004587A1 (de) | 1999-07-10 | 2000-06-28 | Kraftmesselement für eine waage |
Country Status (4)
Country | Link |
---|---|
US (1) | US20020104690A1 (de) |
EP (1) | EP1194753A1 (de) |
DE (2) | DE19932289C1 (de) |
WO (1) | WO2001004587A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7214892B2 (en) * | 2005-03-15 | 2007-05-08 | Metro Corporation | Scale lever assembly |
US7235746B2 (en) * | 2005-03-09 | 2007-06-26 | Metro Corporation | Modular apparatus for electronic scales and a method for assembling same |
DE102011013658B4 (de) | 2011-02-10 | 2012-12-13 | Panasonic Industrial Devices Europe Gmbh | Vorrichtung zur Signalauswertung von Wägezellen mit Dehnmessstreifen |
PL238220B1 (pl) * | 2015-08-27 | 2021-07-26 | Megaterm Plus Spolka Z Ograniczona Odpowiedzialnoscia | Polimerowa belka pomiarowa |
CN110709682A (zh) * | 2017-07-06 | 2020-01-17 | 美蓓亚三美株式会社 | 应变仪和多轴力传感器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0080702A2 (de) * | 1981-12-01 | 1983-06-08 | Bizerba-Werke Wilhelm Kraut GmbH & Co. KG. | Kraftmessvorrichtung |
JPS61128132A (ja) * | 1984-11-28 | 1986-06-16 | Tokyo Electric Co Ltd | ロ−ドセル |
EP0447782A2 (de) * | 1990-03-15 | 1991-09-25 | Bizerba-Werke Wilhelm Kraut GmbH & Co. KG. | Biegekraftaufnehmer, insbesondere für Waagen |
US5183125A (en) * | 1988-01-26 | 1993-02-02 | Soehnle-Waagen Gmbh & Co. | Load-sensing element for a balance |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0083351A1 (de) * | 1981-07-08 | 1983-07-13 | S.E.O.P. | Kraftsensorvorrichtungen |
US4593778A (en) * | 1983-06-21 | 1986-06-10 | Kabushiki Kaisha Ishida Koki Seisakusho | Weighing machine with dummy load cell for error correction |
EP0248965A1 (de) * | 1986-06-09 | 1987-12-16 | Esselte Moreau S.A. | Kraftaufnehmer für ein Wageinstrument |
US4655305A (en) * | 1985-06-24 | 1987-04-07 | Revere Corporation Of America | Strain gage type platform sensor |
EP0227850B1 (de) * | 1985-12-20 | 1988-06-15 | Hottinger Baldwin Messtechnik Gmbh | Kraftaufnehmer |
CH675477A5 (de) * | 1988-04-12 | 1990-09-28 | Scaime |
-
1999
- 1999-07-10 DE DE19932289A patent/DE19932289C1/de not_active Expired - Fee Related
-
2000
- 2000-06-28 WO PCT/EP2000/006011 patent/WO2001004587A1/de not_active Application Discontinuation
- 2000-06-28 EP EP00940411A patent/EP1194753A1/de not_active Withdrawn
- 2000-06-28 DE DE20023524U patent/DE20023524U1/de not_active Expired - Lifetime
-
2002
- 2002-01-09 US US10/043,782 patent/US20020104690A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0080702A2 (de) * | 1981-12-01 | 1983-06-08 | Bizerba-Werke Wilhelm Kraut GmbH & Co. KG. | Kraftmessvorrichtung |
JPS61128132A (ja) * | 1984-11-28 | 1986-06-16 | Tokyo Electric Co Ltd | ロ−ドセル |
US5183125A (en) * | 1988-01-26 | 1993-02-02 | Soehnle-Waagen Gmbh & Co. | Load-sensing element for a balance |
EP0447782A2 (de) * | 1990-03-15 | 1991-09-25 | Bizerba-Werke Wilhelm Kraut GmbH & Co. KG. | Biegekraftaufnehmer, insbesondere für Waagen |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 322 (P - 511) 31 October 1986 (1986-10-31) * |
See also references of EP1194753A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20020104690A1 (en) | 2002-08-08 |
DE19932289C1 (de) | 2001-01-04 |
DE20023524U1 (de) | 2004-09-16 |
EP1194753A1 (de) | 2002-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3802153C2 (de) | ||
EP0225485B1 (de) | Blattfeder aus Faser-Kunststoff-Verbundwerkstoff | |
CH638310A5 (en) | Force transducer | |
WO2000023770A1 (de) | Gleiswaage | |
WO2001004587A1 (de) | Kraftmesselement für eine waage | |
DE3141767A1 (de) | Kraftwandler | |
DE3702271A1 (de) | Biegekraftaufnehmer, insbesondere fuer waagen | |
DE2147097A1 (de) | Waage | |
CH353555A (de) | Kraftmesseinrichtung | |
EP0504341B1 (de) | Lastmessvorrichtung | |
DE3701372C2 (de) | ||
DE2501078A1 (de) | Vorrichtung zum anbringen eines messgeraetes | |
DE3405127C2 (de) | ||
DE3226046A1 (de) | Lastzelle | |
DE3744194A1 (de) | Gabelstapler mit waegeeinrichtung | |
DE102005033527B4 (de) | Vorrichtung zur Erfassung von Kräften und/oder Momenten | |
DE2932597C2 (de) | Meßelement für die Ermittlung der Größe einer im Bereich einer Fläche angreifenden Last mit Hilfe von Dehnmeßstreifen | |
DE1549244A1 (de) | Wiegevorrichtung | |
DE2215620B2 (de) | Einrichtung zur Ermittlung der Belastung eines Trägers, einer Stütze oder dgl. mittels Kraftmeßdosen | |
DE3873901T2 (de) | Vorrichtung zur messung des gewichts. | |
DE1052708B (de) | Kraftmesseinrichtung | |
DE2129214A1 (de) | Messwertwandler, insbesondere fuer die kraftmessung | |
DE2810412C2 (de) | Elektromechanischer Meßwertaufnehmer mit einer Krafteinleitung | |
EP1200807B1 (de) | Lastmesseinrichtung für ein lastaufnahmemittel eines aufzugs | |
DE1275783B (de) | Waegevorrichtung fuer Schienenfahrzeuge |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2000940411 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10043782 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2000940411 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000940411 Country of ref document: EP |