JPS6140329B2 - - Google Patents
Info
- Publication number
- JPS6140329B2 JPS6140329B2 JP9521480A JP9521480A JPS6140329B2 JP S6140329 B2 JPS6140329 B2 JP S6140329B2 JP 9521480 A JP9521480 A JP 9521480A JP 9521480 A JP9521480 A JP 9521480A JP S6140329 B2 JPS6140329 B2 JP S6140329B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- spring
- shaped
- deck
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 210000000569 greater omentum Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- -1 Cr steel Chemical class 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Force In General (AREA)
Description
【発明の詳細な説明】
本発明は荷重変換器、さらに詳しくはひずみゲ
ージを用いた荷重変換器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a load transducer, and more particularly to a load transducer using a strain gauge.
従来のこの種のひずみゲージを用いた荷重変換
器は、第１図及び第２図に示すような形状にNi
―Cr鋼や、ジユラルミン、ベリリウム銅などの
特殊金属を用いて一体に成形又は加工されたロー
ドセルタイプの荷重変換器１０であつたから、精
度が１／３０００乃至１／１００００と高精度である反
面、材質や
加工の面でコストが高くなるという欠点があつ
た。本発明は上述の点に鑑みて為されたものであ
り、その目的とするところは、クランク状に折曲
されたデツキプレート形状（JIS G3352により規
定あり）の一対のスペーサーでロバーバル機構を
形成するとにより量産形状としてのコストを低減
させると同時に、スペーサーの精度を高め、機械
的強度を持たせて、荷重変換器としての精度とコ
スト低下を図ることにある。以下、本発明の実施
例を図に基づいて説明する。第３図において、１
はデツキプレート形状板であり、その上下に、凸
部４があり、これにばね板２の切欠部８及び凹部
６を挿入することにより、位置決めを行う。そし
てそのまま凸部４をかしめるか、もしくは、当て
板３を置き、その係止凹部５を凸部４に挿入し
て、デツキプレート形状板１、ばね板２、当て板
３の間の位置決めを行なつて、デツキプレート形
状板１と当て板３との間で抵抗溶接、又は、ばね
板２と当て板３、デツキプレート形状板１とばね
板２との間でシーム溶接をするなどの方法で相互
に固定をしてロバーバル機構としたものである。
第４図はその組立図であり、７はばね板２に貼る
ひずみゲージ９の位置を表わしている。このよう
に、片側のばね板２、あるいは上下両方のばね板
２にひずみゲージを貼つて４図で示すＡ側を固定
してＢ側に荷重がかかつたときに、ばね板２の変
形によるひずみ値をひずみゲージ９の抵抗値で読
んで荷重変換器とするものである。 Conventional load transducers using this type of strain gauge are made of Ni in the shape shown in Figures 1 and 2.
- Since it was a load cell type load transducer 10 that was integrally molded or processed using special metals such as Cr steel, duralumin, and beryllium copper, it had a high accuracy of 1/3000 to 1/10000, but on the other hand, The disadvantage was that the cost was high in terms of materials and processing. The present invention has been made in view of the above points, and its purpose is to form a roberval mechanism with a pair of spacers in the shape of a deck plate bent into a crank shape (defined by JIS G3352). The aim is to reduce the cost of the mass-produced shape, and at the same time improve the precision of the spacer and give it mechanical strength, thereby reducing the precision and cost of the spacer as a load converter. Embodiments of the present invention will be described below based on the drawings. In Figure 3, 1
is a deck plate-shaped plate, which has convex portions 4 on the top and bottom thereof, and positioning is performed by inserting the notch portion 8 and the concave portion 6 of the spring plate 2 into the convex portions 4. Then, either caulk the convex part 4 as it is, or place the caul plate 3 and insert the locking recess 5 into the convex part 4 to determine the position between the deck plate-shaped plate 1, the spring plate 2, and the caul plate 3. Then, resistance welding is performed between the deck plate-shaped plate 1 and the patch plate 3, or seam welding is performed between the spring plate 2 and the patch plate 3, or between the deck plate-shaped plate 1 and the spring plate 2. They are fixed to each other to form a roberval mechanism.
FIG. 4 is an assembly diagram of the same, and 7 represents the position of the strain gauge 9 attached to the spring plate 2. In this way, when a strain gauge is pasted on one side of the spring plate 2 or both the upper and lower spring plates 2 and the A side shown in Figure 4 is fixed and a load is applied to the B side, the deformation of the spring plate 2 The strain value is read by the resistance value of the strain gauge 9 and used as a load converter.
なお、デツキプレート形状板の形としては、第
３図のものの他、第５図、第６図、第７図などの
ものが考えられる。また、当て板は第８図のよう
なフラツト板や第９図のような切欠板でも同様の
効果が得られるものである。 In addition to the shape of the deck plate shown in FIG. 3, other shapes such as those shown in FIG. 5, FIG. 6, and FIG. 7 can be considered. Furthermore, the same effect can be obtained by using a flat plate as shown in FIG. 8 or a notched plate as shown in FIG. 9 as the backing plate.
本発明は上述のようにデツキプレート形状板の
上下にばね板を設置したので、曲げに対する機械
的強度及び、第４図におけるスペースｌとl′が同
一寸法精度で、負荷がかかつたときに寸法ｌが狂
わない。また、寸法ｌの板金加工は、曲げ部がな
いことから、高精度のものが得られる。さらに、
凸部と凹部のハメ合せ構造のため、組立に際して
治具が不要である。そして、全て板金構造である
ために、大量生産をすることが出来、低コストに
なるという利点がある。 In the present invention, since spring plates are installed above and below the deck plate shape plate as described above, the mechanical strength against bending and the spaces l and l' in Fig. 4 have the same dimensional accuracy and when a load is applied. Dimension l does not go out of order. Further, since there is no bent part in the sheet metal processing having the dimension l, high accuracy can be obtained. moreover,
Due to the fitting structure of the convex part and the concave part, no jig is required during assembly. Since the entire structure is made of sheet metal, it has the advantage of being mass-produced and reducing costs.
第１図は従来のロードセルタイプの荷重変換器
を示す斜視図、第２図は従来例を示す斜視図、第
３図は本発明の一実施例を示す分解斜視図、第４
図は同上の斜視図、第５図乃至第７図は同上に使
用するデツキプレート形状板の斜視図、第８図及
び第９図は同上に使用する当て板を示す斜視図で
あり、１はデツキプレート形状板、２はばね板、
４は凸部、８は切欠部、９はひずみゲージであ
る。
FIG. 1 is a perspective view showing a conventional load cell type load converter, FIG. 2 is a perspective view showing a conventional example, FIG. 3 is an exploded perspective view showing an embodiment of the present invention, and FIG.
The figure is a perspective view of the same as above, FIGS. 5 to 7 are perspective views of a deck plate-shaped plate used in the same, FIGS. 8 and 9 are perspective views showing a patch plate used in the same, Detsuki plate shaped plate, 2 is a spring plate,
4 is a convex portion, 8 is a notch portion, and 9 is a strain gauge.
Claims (1)
クランク状に折曲されたデツキプレート形状板の
上下にばね板を一対設置してデツキプレート形状
板とばね板とで平行四辺形を形作つてロバーバル
機構と成し、ばね板にひずみゲージを貼着して成
ることを特徴とする荷重変換器。 ２ デツキプレート形状板とばね板の結合におい
て、デツキプレート形状板に設けた凸部にばね板
の切欠部を挿入して位置決めを成し、ばね板とデ
ツキプレート形状板を固定したことを特徴とする
特許請求の範囲第１項記載の荷重変換器。[Claims] 1. In a load converter with a sheet metal structure, a pair of spring plates are installed above and below a pair of deck plate-shaped plates bent into a crank shape, and the deck plate-shaped plates and the spring plate form a parallelogram. A load transducer characterized in that it is formed into a Roberval mechanism, and a strain gauge is attached to a spring plate. 2. In the connection of the deck plate-shaped plate and the spring plate, the notch of the spring plate is inserted into the convex part provided on the deck plate-shaped plate to achieve positioning, and the spring plate and the deck plate-shaped plate are fixed. A load transducer according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9521480A JPS5720630A (en) | 1980-07-11 | 1980-07-11 | Load transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9521480A JPS5720630A (en) | 1980-07-11 | 1980-07-11 | Load transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5720630A JPS5720630A (en) | 1982-02-03 |
| JPS6140329B2 true JPS6140329B2 (en) | 1986-09-09 |
Family
ID=14131491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9521480A Granted JPS5720630A (en) | 1980-07-11 | 1980-07-11 | Load transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720630A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184433A (en) * | 1985-02-12 | 1986-08-18 | Kubota Ltd | Load cell |
| JPS6227635A (en) * | 1985-07-29 | 1987-02-05 | Ee & D:Kk | Load cell |
| FR2647901A1 (en) * | 1989-05-30 | 1990-12-07 | Terraillon | CONSTRAINED GAUGE WEIGHING DEVICE |
| DE4407066C2 (en) * | 1993-03-04 | 1999-03-11 | Yazaki Corp | Strain sensor for a vehicle load measuring device |
-
1980
- 1980-07-11 JP JP9521480A patent/JPS5720630A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5720630A (en) | 1982-02-03 |
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