WO2014188678A1 - 荷重検出装置 - Google Patents
荷重検出装置 Download PDFInfo
- Publication number
- WO2014188678A1 WO2014188678A1 PCT/JP2014/002509 JP2014002509W WO2014188678A1 WO 2014188678 A1 WO2014188678 A1 WO 2014188678A1 JP 2014002509 W JP2014002509 W JP 2014002509W WO 2014188678 A1 WO2014188678 A1 WO 2014188678A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strain
- detection device
- adhesive
- thermal expansion
- expansion coefficient
- Prior art date
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 32
- 239000012790 adhesive layer Substances 0.000 claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 62
- 239000000758 substrate Substances 0.000 claims description 36
- 239000010410 layer Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 239000010935 stainless steel Substances 0.000 description 11
- 229910001220 stainless steel Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 229920006332 epoxy adhesive Polymers 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
- B60N2/0268—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
- B60N2/0272—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for detecting the position of seat parts
Definitions
- the present invention relates to a load detection device that detects a load applied to a strain body by measuring mechanical strain generated in the strain body.
- FIG. 9 is a plan view of a strain generating body of a conventional load detection device.
- the strain body 111 is a stainless steel plate having a glass layer formed on the surface.
- the strain body 111 has a detection hole 112 in the approximate center thereof.
- a power supply electrode 116, a GND electrode 117, an output electrode 118, and a circuit pattern 121 made of a conductor are formed on the surface of the strain generating body 111.
- a compression side strain resistance element 119 and a tension side strain resistance element 120 are formed on the surface of the strain generating body 111.
- the compression side strain resistance element 119 and the tension side strain resistance element 120 are obtained by baking a metal glaze paste formed by printing.
- the resistance values of the compression-side strain resistance element 119 and the tension-side strain resistance element 120 change according to the strain of the strain-generating body 111 that receives the load, and the voltage of the output electrode 118 also changes. Therefore, the load is detected by measuring the voltage of the output electrode 118.
- Patent Document 2 As another conventional load detection device, a configuration described in Patent Document 2 including a strain generating body and a strain gauge attached to the strain generating body is known. Generally, a strain gauge is covered with a resin film to ensure insulation, and is attached to a strain generating body with a resin-based adhesive.
- the load detection device includes a strain generating body, a strain detecting element disposed on the strain generating body, and an adhesive that is positioned between the strain generating body and the strain detecting element and fixes the strain detecting element to the strain generating body. And having a layer.
- the adhesive layer is formed of a glass adhesive.
- FIG. 1 is an exploded perspective view of a load detection device according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of a cross section of the strain resistance element in the embodiment.
- FIG. 3 is a top view of the strain resistance element in the embodiment.
- FIG. 4 is a diagram showing the arrangement of the strain resistance elements on the strain generating body in the embodiment.
- FIG. 5 is a circuit diagram of the load detection device according to the embodiment.
- FIG. 6 is a diagram of a manufacturing process of the strain resistance element in the embodiment.
- FIG. 7 is a schematic diagram illustrating a load detection state of the load detection device according to the embodiment.
- FIG. 8 is a diagram illustrating a simulation result of the load detection device.
- FIG. 9 is a plan view of a strain generating body of a conventional load detecting device.
- FIG. 1 is an exploded perspective view of a load detection device 50 according to the embodiment.
- 2 and 3 are a schematic view of a cross section of the strain resistance elements 12 and 13 and a top view of the strain resistance elements 12 and 13, respectively.
- the load detection device 50 includes a strain generating body 11, strain resistance elements 12 and 13, and adhesive layers 32 and 35.
- the strain body 11 bends when it receives a load.
- the strain body 11 has three through holes 17 and 18.
- the through hole 17 is provided in the center of the strain body 11.
- the two through holes 18 are respectively provided at both ends of the strain body 11.
- a pressing member 19 that transmits a detected load is inserted into the through hole 17.
- a fixing member (not shown) for external attachment is inserted into the two through holes 18.
- the strain resistance element 12 is a strain detection element. When the strain resistance element 12 is distorted, the electric resistance value changes.
- the strain resistance element 12 is disposed on the surface of the strain body 11.
- the adhesive layer 32 is located between the strain body 11 and the strain resistance element 12, and fixes the strain resistance element 12 to the strain body 11.
- the strain resistance element 13 is a strain detection element and is disposed on the surface of the strain generating body 11.
- the adhesive layer 35 is positioned between the strain body 11 and the strain resistance element 13 and fixes the strain resistance element 13 to the strain body 11.
- the load detection device 50 further includes a control circuit 14, a connector case 15, and a wiring electrode 16.
- the connector case 15 includes a control circuit 14.
- the connector case 15 is attached to the strain body 11.
- the wiring electrode 16 electrically connects the strain resistance elements 12 and 13 and the control circuit 14.
- the strain resistance element 12 includes a support substrate 30, an insulating layer 31, a power supply terminal 20, an output terminal 21, a thick film resistor pattern 22, a ground terminal 23, and a thick film resistor pattern 24. is doing.
- the support substrate 30 is made of metal and has flexibility.
- the insulating layer 31 is provided on the surface of the support substrate 30.
- the power supply terminal 20, the output terminal 21, the ground terminal 23, and the thick film resistance patterns 22 and 24 are formed in the insulating layer 31.
- the strain resistance element 13 includes a support substrate 33, an insulating layer 34, a power supply terminal 20, an output terminal 26, a thick film resistance pattern 27, a ground terminal 23, and a thick film resistance pattern 28.
- the support substrate 33 is made of metal and has flexibility.
- the insulating layer 34 is provided on the surface of the support substrate 33.
- the power supply terminal 20, the output terminal 26, the ground terminal 23, and the thick film resistance patterns 27 and 28 are formed on the insulating layer 34.
- FIG. 4 is a diagram showing the arrangement of the strain resistance elements 12 and 13 on the strain generating body 11 in the embodiment.
- FIG. 5 is a circuit diagram of the load detection device 50 according to the embodiment.
- the strain resistance element 12 includes a thick film resistor pattern 22 connected in parallel between the power supply terminal 20 and the output terminal 21, and a thick film resistor pattern 24 connected in parallel between the output terminal 21 and the ground terminal 23.
- the bridge circuit 25 is configured.
- the strain resistive element 13 includes a thick film resistor pattern 27 connected in parallel to the power supply terminal 20 and the output terminal 26, and a thick film resistor pattern 28 connected in parallel between the output terminal 26 and the ground terminal 23. 29 is configured.
- strain resistance element 12 and the strain resistance element 13 are electrically at the same potential, they are regarded as the same terminal in the electric circuit diagram.
- the strain resistance element 12 and the strain resistance element 13 together constitute a full bridge circuit.
- the control circuit 14 is electrically connected to the power supply terminal 20, the output terminals 21 and 26, and the ground terminal 23 through the wiring electrode 16.
- FIG. 6 is a diagram of a manufacturing process of the strain resistance elements 12 and 13 in the embodiment.
- One stainless plate 36 includes a plurality of support substrates 30 and 33.
- An insulating layer 31, a power supply terminal 20, an output terminal 21, a thick film resistor pattern 22, a ground terminal 23, and a thick film resistor pattern 24 are respectively formed on the plurality of support substrates 30.
- a power supply terminal 20, a ground terminal 23, an output terminal 26, a thick film resistor pattern 27, and a thick film resistor pattern 28 are formed on the plurality of support substrates 33, respectively.
- the specific manufacturing method is as follows. First, a large-sized stainless steel plate 36 is prepared, and a glass paste is printed on the upper surface of the stainless steel plate 36 to form insulating layers 31 and 34. Next, a metal glaze paste is printed on the upper surfaces of the insulating layers 31 and 34 to form thick film resistance patterns 22, 24, 27 and 28. Before and after this, a conductor paste is applied to form the power supply terminal 20, the output terminals 21, 26, and the ground terminal 23. Thereafter, the large-sized stainless steel plate 36 is divided into pieces to produce the strain resistance elements 12 and 13.
- one large-sized stainless steel plate 36 produces a plurality of strain resistance elements 12 and 13 by a printing method.
- the printing method it is more efficient to produce many strain resistance elements 12 and 13 at a time.
- the strain generating element 11 is restricted in size reduction due to the attachment method or the like, but the strain resistance elements 12 and 13 do not have such restriction.
- the strain resistance elements 12 and 13 are formed from the stainless steel plate 36. More strain resistance elements 12 and 13 can be created.
- the load detection device 50 As compared with the case where the compression-side strain resistance element 119 and the tension-side strain resistance element 120 are directly formed on the strain-generating body 111 as in Patent Document 1 of the prior art, the load detection device 50 according to the embodiment is In addition, productivity is higher when the strain resistance elements 12 and 13 are attached to the strain generating body 11.
- the load detection device 50 having the above configuration operates as follows.
- FIG. 7 is a schematic diagram showing a load detection state of the load detection device 50 in the embodiment.
- the load detection device 50 is attached as an example between a vehicle seat (not shown) and a seat rail (not shown), and measures the load of a person sitting on the vehicle seat. Used for.
- a fixing member (not shown) provided in the seat rail is inserted into the through-holes 18 provided on both ends of the strain body 11, and the load detection device 50 is fixed to the seat rail.
- a pressing member 19 is inserted into the through hole 17 provided in the center of the strain body 11. The front end side of the pressing member 19 is fixed to the lower part of the vehicle seat.
- the strain generating body 11 supported at both ends by a fixing member (not shown). The center part of the is bent downward. Then, the resistance value of the strain resistance elements 12 and 13 is changed by this bending, and the detection signal corresponding to the load is formed by electrically processing the change of the resistance value by the control circuit 14.
- the load detection device 50 can form a detection signal corresponding to the magnitude of the detection load by differentially processing the signals output from the output terminals 21 and 26 by the control circuit 14.
- the strain body 11 of the load detection device 50 of the present embodiment is made of carbon steel, and the support substrates 30 and 33 are made of stainless steel. If the thermal expansion coefficient of the adhesive layers 32 and 35 for bonding the strain body 11 and the support substrates 30 and 33 is different from the thermal expansion coefficient of the strain body 11 or the thermal expansion coefficient of the support substrates 30 and 33, The adhesive layers 32 and 35 may crack, and the strain body 11 and the support substrates 30 and 33 may be peeled off. For this reason, the material of the adhesive used for the adhesive layers 32 and 35 is preferably a material having a thermal expansion coefficient close to that of the strain generating body 11 and the support substrates 30 and 33. Thereby, the adhesive strength between the strain body 11 and the support substrates 30 and 33 is ensured.
- the glass adhesive is an adhesive using a glass-based material, for example, water glass (sodium silicate aqueous solution).
- the support substrates 30 and 33 made of stainless steel and having a thermal expansion coefficient of 11.5 ppm / K and the strain body 11 made of carbon steel and having a thermal expansion coefficient of 10.3 ppm / K are bonded.
- a glass adhesive having a thermal expansion coefficient in the range of 6.3 ppm / K to 15.5 ppm / K as 35 the adhesive strength can be ensured.
- the upper limit of the thermal expansion coefficient of the adhesive layers 32 and 35 is set to a value 4 ppm / K larger than the thermal expansion coefficient of the strain-generating body 11 and the support substrates 30 and 33 having the lower thermal expansion coefficient.
- the lower limit of the thermal expansion coefficient of 35 is more effective when the value is 4 ppm / K lower than the thermal expansion coefficient of the strain generating body 11 and the supporting substrates 30 and 33, which has the higher thermal expansion coefficient.
- the thermal expansion coefficient of the strain body 11 is 10.3 ppm / K and the thermal expansion coefficients of the support substrates 30 and 33 are 11.5 ppm / K
- the thermal expansion coefficient of the adhesive layers 32 and 35 is 7. If the glass adhesive is in the range of 0.5 ppm / K to 14.3 ppm / K, the strain-generating body 11 and the support substrates 30 and 33 are bonded more firmly.
- the Young's modulus of the adhesive layers 32 and 35 is larger than the Young's modulus when a resin adhesive is used.
- the transmission loss caused by the adhesive layers 32 and 35 is suppressed when the deflection generated in the strain body 11 due to the load to be detected is transmitted to the support substrates 30 and 33, the strain of the strain body 11 is suppressed.
- the detection sensitivity of the strain resistance elements 12 and 13 with respect to bending increases. As the detection sensitivity increases, the measurement resolution improves. If the resolution is improved, the load can be detected with high accuracy even if the deformation of the strain-generating body 11 is small with respect to the load. Therefore, the strain can be set so that the deformation of the strain-generating body 11 with respect to the load is small. 50 size reduction can be achieved.
- FIG. 8 is a diagram showing a simulation result of the load detection device 50 according to the embodiment.
- the horizontal axis of FIG. 8 shows the Young's modulus of the adhesive that bonds the strain body 11 and the support substrate 30, and the vertical axis shows the detection standardized with a detection sensitivity of 1 when a glass adhesive is used as the adhesive. Shows sensitivity.
- the result of FIG. 8 is obtained by simulation.
- FIG. 8 shows (A) an epoxy-based adhesive as a resin-based adhesive at 25 ° C., (B) an epoxy-based adhesive at 85 ° C., and (C) the glass adhesive of the embodiment.
- the respective detection sensitivities are shown.
- FIG. 8 shows the detection sensitivity in the case of bonding using a material having a Young's modulus of 40 GPa although no material is specified in addition to these materials.
- the Young's modulus of (A) is 9 GPa
- the Young's modulus of (B) is 8 GPa
- the Young's modulus of (C) is 70 GPa.
- the detection sensitivity of the standardized strain resistance elements 12 and 13 is about 0.87 when the material (A) is used, and about 0.77 when the material (B) is used. It can be seen that the Young's modulus of the film greatly changes at 10 GPa or less.
- the detection sensitivity greatly changes when the temperature of the usage environment changes, so the detection accuracy of the load detection device 50 decreases. End up.
- the adhesive layers 32 and 35 are formed with a glass adhesive as in the embodiment, the temperature dependency of the Young's modulus of the glass adhesive is very small. Even if the value changes greatly, the change in detection sensitivity is small.
- the detection accuracy of the load detection device 50 can be improved by forming the adhesive layers 32 and 35 with a glass adhesive.
- the bending of the strain generating body 11 is affected by the size of the strain generating body 11, and as the length of the strain generating body 11 is longer, the width is narrower, or the thickness is thinner, the deflection when receiving a load increases.
- the detection sensitivity of the adhesive layers 32 and 35 formed of the glass adhesive shown in (C) is the adhesive layers 32 and 35 formed of the epoxy adhesive shown in (B).
- the detection sensitivity is about 1.3 times that of the above. Therefore, when the glass adhesive is used, the epoxy adhesive is used even when the flexure of the strain generating body 11 is 1 / 1.3 times that when the epoxy adhesive is used. It becomes possible to obtain the same detection sensitivity.
- the strain body 11 and the support substrate 30 are bonded to each other by the glass adhesive so that the flexure of the strain body 11 is 1 / 1.3 times that when the epoxy adhesive is used. Even if the strain body 11 is formed, it is possible to obtain the same detection sensitivity as when an epoxy adhesive is used, and the load detection device 50 can be downsized.
- the material of the strain-generating body 11 is carbon steel and the support substrates 30 and 33 are stainless steel.
- the present invention is not limited to this, and the thermal expansion coefficient of the adhesive is the thermal expansion coefficient of the strain-generating body 11. If the thermal expansion coefficient of the supporting substrates 30 and 33 is within 4 ppm / K, the effect of the embodiment can be obtained.
- the support substrates 30 and 33 are formed of a metal material, the difference in thermal expansion coefficient from the glass adhesive is not large, which is particularly useful.
- the load detection device relates to a load detection device that detects a load applied to a strain body, and is particularly useful in a load detection device for measuring a load from a vehicle seat.
Abstract
Description
12,13 歪抵抗素子
14 制御回路
15 コネクタケース
16 配線電極
17 貫通孔
18 貫通孔
19 押圧部材
20 電源端子
21,26 出力端子
22,24,27,28 厚膜抵抗パターン
23 接地端子
25,29 ハーフブリッジ回路
30,33 支持基板
31,34 絶縁層
32,35 接着層
36 ステンレス板
50 荷重検出装置
111 起歪体
112 検出孔
116 電源電極
117 GND電極
118 出力電極
119 圧縮側歪抵抗素子
120 引張側歪抵抗素子
121 回路パターン
Claims (6)
- 起歪体と、
前記起歪体に配置された歪検出素子と、
前記起歪体と前記歪検出素子との間に位置し、ガラス接着剤で形成され、前記歪検出素子を前記起歪体に固定する接着層と、を備えた、
荷重検出装置。 - 前記起歪体は金属で構成され、
前記歪検出素子は、
可撓性を有する金属で構成された支持基板と、
前記支持基板の表面に設けられた絶縁層と、
前記絶縁層の表面に形成された抵抗パターンとを有し、
前記接着層は前記起歪体と前記支持基板との間に位置する、
請求項1記載の荷重検出装置。 - 前記支持基板の熱膨張係数と前記接着層の熱膨張係数との差が4.0×10ppm/K以下である、
請求項1に記載の荷重検出装置。 - 前記起歪体の熱膨張係数と前記接着層の熱膨張係数との差が4.0ppm/K以下である、
請求項1に記載の荷重検出装置。 - 前記支持基板の熱膨張係数と前記接着層の熱膨張係数との差が4.0×10ppm/K以下である、
請求項4に記載の荷重検出装置。 - 前記接着層のヤング率が70GPa以上である、
請求項1に記載の荷重検出装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/786,873 US20160061670A1 (en) | 2013-05-21 | 2014-05-13 | Load detector |
JP2015518068A JPWO2014188678A1 (ja) | 2013-05-21 | 2014-05-13 | 荷重検出装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-106876 | 2013-05-21 | ||
JP2013106876 | 2013-05-21 |
Publications (1)
Publication Number | Publication Date |
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WO2014188678A1 true WO2014188678A1 (ja) | 2014-11-27 |
Family
ID=51933248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/002509 WO2014188678A1 (ja) | 2013-05-21 | 2014-05-13 | 荷重検出装置 |
Country Status (3)
Country | Link |
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US (1) | US20160061670A1 (ja) |
JP (1) | JPWO2014188678A1 (ja) |
WO (1) | WO2014188678A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01210485A (ja) * | 1988-02-18 | 1989-08-24 | Honda Motor Co Ltd | 力学量検出素子 |
JPH0455341A (ja) * | 1990-06-25 | 1992-02-24 | Nippon Electric Glass Co Ltd | 接着用ガラス組成物 |
JPH04204224A (ja) * | 1990-11-30 | 1992-07-24 | Teraoka Seiko Co Ltd | セラミック又は石英ロードセル |
JPH05141907A (ja) * | 1991-09-24 | 1993-06-08 | Tokyo Electric Co Ltd | 歪センサ及びその製造方法並びにその歪センサを使用したロードセル秤 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58142206A (ja) * | 1982-02-18 | 1983-08-24 | Tokyo Electric Co Ltd | 歪センサ |
WO2006123708A1 (ja) * | 2005-05-19 | 2006-11-23 | Matsushita Electric Industrial Co., Ltd. | 歪検出装置 |
US7878074B1 (en) * | 2008-07-17 | 2011-02-01 | Strain Measurement Devices, Inc. | Eccentric load sensing device used to sense differential pressures |
USRE45883E1 (en) * | 2008-10-09 | 2016-02-09 | Panasonic Intellectual Property Management Co., Ltd. | Tubular sensor with an inner projection |
US8258413B2 (en) * | 2008-11-19 | 2012-09-04 | Aisin Seiki Kabushiki Kaisha | Vehicle seat load detection device having interspace to receive projecting portion scraped off from press-fitted shaft member |
JP2010120570A (ja) * | 2008-11-21 | 2010-06-03 | Aisin Seiki Co Ltd | 車両用シート装置 |
JP5233622B2 (ja) * | 2008-12-02 | 2013-07-10 | アイシン精機株式会社 | 車両シート用乗員荷重センサ |
-
2014
- 2014-05-13 JP JP2015518068A patent/JPWO2014188678A1/ja active Pending
- 2014-05-13 WO PCT/JP2014/002509 patent/WO2014188678A1/ja active Application Filing
- 2014-05-13 US US14/786,873 patent/US20160061670A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01210485A (ja) * | 1988-02-18 | 1989-08-24 | Honda Motor Co Ltd | 力学量検出素子 |
JPH0455341A (ja) * | 1990-06-25 | 1992-02-24 | Nippon Electric Glass Co Ltd | 接着用ガラス組成物 |
JPH04204224A (ja) * | 1990-11-30 | 1992-07-24 | Teraoka Seiko Co Ltd | セラミック又は石英ロードセル |
JPH05141907A (ja) * | 1991-09-24 | 1993-06-08 | Tokyo Electric Co Ltd | 歪センサ及びその製造方法並びにその歪センサを使用したロードセル秤 |
Also Published As
Publication number | Publication date |
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JPWO2014188678A1 (ja) | 2017-02-23 |
US20160061670A1 (en) | 2016-03-03 |
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