JPH04102711A - Washer - Google Patents
WasherInfo
- Publication number
- JPH04102711A JPH04102711A JP21703790A JP21703790A JPH04102711A JP H04102711 A JPH04102711 A JP H04102711A JP 21703790 A JP21703790 A JP 21703790A JP 21703790 A JP21703790 A JP 21703790A JP H04102711 A JPH04102711 A JP H04102711A
- Authority
- JP
- Japan
- Prior art keywords
- washer
- tightening
- thickness
- deformed
- heated
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000012811 non-conductive material Substances 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 2
- 239000011147 inorganic material Substances 0.000 claims 1
- 239000011368 organic material Substances 0.000 claims 1
- 230000006870 function Effects 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 229920001169 thermoplastic Polymers 0.000 abstract description 3
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、座金の改良に関するもので、詳しくは、熱
の作用によって厚みが変化する座金に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to improvements in washers, and more particularly to washers whose thickness changes under the action of heat.
従来、ねじ結合の緩みを積極的に止める座金として、ね
じ山の接触圧力を殊更大きくし、かつ維持するように、
ばね座金、ゴム座金、などが用いられているが、使用状
態が長期に及ぶと振動などが原因で、次第にねし結合が
緩むことが多い。Conventionally, as a washer that actively prevents the loosening of a screw connection, the contact pressure of the screw thread is particularly increased and maintained.
Spring washers, rubber washers, etc. are used, but after long-term use, the screw connections often loosen due to vibrations and other factors.
また、前記した接触圧力を太き（するために、緊縛時に
は大きなトルクや力を必要とし、ねじ結合の分解時には
、前記した大きな接触圧力から開放するために、大きな
トルクや力を必要としている。In addition, in order to increase the contact pressure described above, large torque and force are required when binding, and when disassembling a screw connection, large torque and force are required to release from the above-mentioned large contact pressure.
前記した従来の座金は、ねじ結合の緊締状態の持続性に
欠けるため、十分な信頼性が得られていないゆ
また、ねじ山に十分な接触圧力を得るために、緊締時に
はそれに応じた大きなトルクやノ〕を必要とし、ねじ結
合の分解時にも、これと同等のトルクや力を使用して前
記接触圧力から開放する必要がある。The conventional washers described above do not have sufficient reliability due to the lack of continuity in the tightened state of the threaded connection.Also, in order to obtain sufficient contact pressure on the threads, a correspondingly large torque is required when tightening. When disassembling a screw connection, it is necessary to release the contact pressure using the same torque or force.
この発明は、ねじ結合の緊締に使用される座金において
、大きなトルクや力を用いることなく、ねじ結合の緊締
または弛緩を容易に行うことができ、かつ、ねじ結合の
緊締状態を確実に持続できる」−分な体重性を持った座
金を提供することを目的とする。In a washer used for tightening a screw connection, the screw connection can be easily tightened or loosened without using large torque or force, and the tightened state of the screw connection can be maintained reliably. The purpose of the present invention is to provide a washer with a weight that is as strong as 100%.
前記の目的を達成するためにこの発明においては、形状
を変形した後加熱すると、変形前の形状に復元する機能
、すなわち形状記憶機能を有する非Ｓｔ性材料を用いて
、座金を形成したものである。In order to achieve the above object, in the present invention, a washer is formed using a non-St material that has a function of restoring the shape to the shape before deformation when heated after being deformed, that is, a shape memory function. be.
そしてこの座金を、電磁波の照射を受けて発熱する材料
から形成することにより、加熱用のエネルギーとして電
磁波が利用される。ここで、該材料を誘電体としたばあ
い、誘電損を発生さセ・る周波数帯域内の高周波電界が
これに加えられる。また、前記材料を赤外線（遠赤外線
を含む。以下同じ）を吸収する高分子材料などの材質と
しまたばあい、該熱線が加熱用のエネルギーとして利用
される。By forming this washer from a material that generates heat when irradiated with electromagnetic waves, the electromagnetic waves are used as heating energy. Here, if the material is a dielectric, a high frequency electric field within a frequency band that causes dielectric loss is applied thereto. Furthermore, if the material is a polymeric material that absorbs infrared rays (including far infrared rays; the same applies hereinafter), the heat rays can be used as energy for heating.
この発明によれば、ねじの結合緊締時に、予め軸線方向
に収縮加工した座金を同方向に加熱伸長ざ−１−ること
により、ねじ山を押圧して接触圧力を高め、焼きばめ同
然の緊締状態を作るはたらきをする。According to this invention, when tightening a screw connection, the washer, which has been previously shrink-processed in the axial direction, is heated and expanded in the same direction, thereby pressing the screw thread and increasing the contact pressure. It functions to create a tense state.
なお、前記座金を予め軸線方向Ｃ＝伸長加工してねじの
緊締時に組み込んでおくと、ねじ結合の分解時に咳座金
を加熱収縮して、緊締部分に遊隙を与えて緊締解除のは
たらきをする。Note that if the washer is stretched in the axial direction C in advance and incorporated when tightening the screw, the washer will be heated and shrunk when the screw connection is disassembled, providing play in the tightening part and functioning to release the tightening. .
この発明によれば、前記座金を電磁波の照射を受けて発
熱する材料から形成すると、エネルギ・−の伝達媒体な
しに、非接触かつ直接に加熱されて初期の所定の厚みに
復元される。また前記材料を、赤外線の照射を受けると
このエネルギーを吸収して発熱する高分子材料としたば
あい、前記熱線の照射を受けて前記座金が加熱され、初
期の所定の厚みに復元される。According to this invention, when the washer is made of a material that generates heat when irradiated with electromagnetic waves, it is heated non-contact and directly without an energy transmission medium, and is restored to its initial predetermined thickness. If the material is a polymeric material that absorbs energy and generates heat when irradiated with infrared rays, the washer is heated by the irradiation with the heat rays and restored to its initial predetermined thickness.
以下添付図面に基づき、この発明を特定の実施例につい
て説明する。The present invention will be described below with reference to specific embodiments with reference to the accompanying drawings.
この発明の第１の実施例は、熱可塑性形状記憶樹脂を材
料とした座金であって、たとえば、スチレンモノマーと
ブタジェンモノマーとの共重合体からなる座金１を予め
厚みｔに収縮加工しておき、被挟持材３を介してボルト
２の締結対象材４への螺合を進め、前記座金１が該ボル
ト頭下面２ａに接した時点で核部にマイクロ波を照射し
、そのエネルギーを吸収した前記座金１の誘電損を生起
させることにより、７０〜９０℃程度に加熱昇温して伸
長変形がなされて、加工前の厚みｔ＋Δｔに復元する。A first embodiment of the present invention is a washer made of a thermoplastic shape memory resin. For example, a washer 1 made of a copolymer of styrene monomer and butadiene monomer is shrink-processed in advance to a thickness t. Then, the bolt 2 is screwed into the material 4 to be fastened through the material 3 to be clamped, and when the washer 1 comes into contact with the lower surface 2a of the bolt head, the core is irradiated with microwaves and the energy is absorbed. By causing a dielectric loss in the washer 1, the washer 1 is heated to a temperature of about 70 to 90°C, elongated and deformed, and restored to the thickness t+Δt before processing.
その結果、該座金１がねじ山に圧接して焼きばめ同然の
緊締状態が実現される。As a result, the washer 1 comes into pressure contact with the screw thread, achieving a tightening condition similar to that of a shrink fit.
この発明の第２の実施例は、熱可塑性形状記憶樹脂を材
料とした座金１の表面に、波長域がおよそ４μｍ〜１ｍ
ｒｎの遠赤外線を照射し７、そのエネルギーを吸収した
前記座金１が加熱昇温しで、変形がなされるもので、第
１の例と同じく予め収縮加工した座金を加熱伸長により
ねし結合の緊締状態をつくりだすものである。The second embodiment of the present invention has a wavelength range of about 4 μm to 1 m on the surface of the washer 1 made of thermoplastic shape memory resin.
The washer 1 is irradiated with far infrared rays of rn, and the washer 1 absorbs the energy and is heated and deformed.As in the first example, the washer 1, which has been previously shrink-processed, is heated and stretched to form a threaded connection. This creates a tense situation.
この発明の第３の実施例は、前述の第１の実施例と同様
の材料を用いた座金１について一２逆に予め厚みをｔ＋
Δｔ６に伸長加工しておき、被挟持＋４３と前記座金１
とを介してボルト２の締結対象材４への螺合を進め、緊
締した使用状態にあるねし結合を分解する際に、前記座
金１の部分にマイクロ波を照射し、該座金１が生起する
誘電損により加熱収縮させることにより、加工前の厚み
ｔに復元する。その結果、咳座金１がボルト頭下面２ａ
から離間することにより、ねじ山への圧接作用が消滅し
て、ねじの緊締固着とその維持は解除される。In a third embodiment of the present invention, a washer 1 made of the same material as in the first embodiment has a thickness t +
It is extended to Δt6, and the clamped +43 and the washer 1 are
When the bolt 2 is screwed into the material 4 to be fastened through the bolt 2 and the threaded joint in the tightened state of use is disassembled, the washer 1 is irradiated with microwaves and the washer 1 is activated. By heating and shrinking due to dielectric loss, the thickness t before processing is restored. As a result, the cough washer 1 is attached to the lower surface 2a of the bolt head.
By separating from the thread, the pressing action on the screw thread disappears, and the tightening of the screw and its maintenance are released.
この発明によれば、ねじの結合緊締時に、予め軸線方向
に収縮加工した座金を同方向に加熱伸長し、ねじ山を押
圧して緊締状態をつくる構成であり、また座金を予め軸
線方向に伸長加工してねじの緊締時に組み込み、その分
解時に該座金を加熱収縮して、緊締部分に遊隙を与える
構成であるから、螺合緊締は焼きばめに匹敵する信転性
の高いねし結合が実現できる。また、結合緊締と結合解
除の際に要する大きなトルクや力は、熱作用により自動
的に行い、人力によらないから、作業性に優れている。According to this invention, when tightening a screw connection, a washer that has been previously contracted in the axial direction is heated and expanded in the same direction, and the threads are pressed to create a tightened state. The washer is processed and assembled when tightening the screw, and when it is disassembled, the washer is heated and shrunk to provide play in the tightened part, so screw tightening is a threaded connection with high reliability comparable to shrink fit. can be realized. Further, the large torque and force required for tightening and releasing the connection are automatically generated by heat action and do not rely on human power, resulting in excellent workability.
さらに、この発明によれば、座金は電磁波の照射を受け
て発熱する材料から形成することにより、エネルギーの
伝達媒体なしに直接加熱する構成であるから、非接触で
操作性の高い作業が実現できる。Furthermore, according to the present invention, the washer is made of a material that generates heat when irradiated with electromagnetic waves, so that it is directly heated without an energy transmission medium, making it possible to perform non-contact work with high operability. .
第１図はこの発明の一実施例を示す平面図、第２図は収
縮状態を示す同断面図、
第３図は伸長状態を示す同断面図、
第４図は非緊締状態を示す要部説明図、第５図は緊締状
態を示す要部説明図、
である。
なお、図中次の符号はそれぞれ次の部分を示す。
ｌ・・・座金 ２・・・ボルト２ａ・・・ボ
ルト頭下面Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the same showing the contracted state, Fig. 3 is a cross-sectional view of the same showing the extended state, and Fig. 4 is a main part showing the non-tensioned state. An explanatory diagram, FIG. 5 is an explanatory diagram of main parts showing a tightened state. In addition, the following symbols in the figure indicate the following parts, respectively. l...Washer 2...Bolt 2a...Bottom surface of bolt head
Claims (5)
復元する機能を有する、非導電性材料からなるる座金。(1) A washer made of a non-conductive material that has the function of restoring the shape before deformation when heated after being deformed.
は有機の材料であることを特徴とする、第１請求項に記
載の座金。(2) The washer according to claim 1, wherein the material is an inorganic or organic material that generates heat when irradiated with electromagnetic waves.
誘電体であることを特徴とする、第２請求項に記載の座
金。(3) The washer according to claim 2, wherein the material is a dielectric that generates heat due to dielectric loss under a high frequency electric field.
ると、このエネルギーを吸収して発熱する材質であるこ
とを特徴とする、第２請求項に記載の座金。(4) The washer according to claim 2, wherein when the material is irradiated with infrared rays (including far infrared rays), the material absorbs this energy and generates heat.
に収縮または伸長するように形成したことを特徴とする
、第１請求項、第２請求項、第３請求項、または第４請
求項に記載の座金。(5) Claim 1, Claim 2, Claim 3, or Claim 4, characterized in that the thickness is changed by heating and the product is formed so as to contract or expand in the axial direction of the screw connection. The washer described in Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21703790A JPH04102711A (en) | 1990-08-20 | 1990-08-20 | Washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21703790A JPH04102711A (en) | 1990-08-20 | 1990-08-20 | Washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04102711A true JPH04102711A (en) | 1992-04-03 |
Family
ID=16697852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21703790A Pending JPH04102711A (en) | 1990-08-20 | 1990-08-20 | Washer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04102711A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6696185B1 (en) | 1995-07-07 | 2004-02-24 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and fastening method therefor |
| DE10355798A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Screw bolt detaching tool for use in engine construction, has stop ring between drive shaft and head part of barrel extruder, and screw bolt that can be easily detached from drive shaft if ring is destroyed |
| CN105984510A (en) * | 2015-03-23 | 2016-10-05 | 福特全球技术公司 | Vehicle body structure |
| TWI568941B (en) * | 2015-04-16 | 2017-02-01 | Production method of leak - use adapter |
-
1990
- 1990-08-20 JP JP21703790A patent/JPH04102711A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6696185B1 (en) | 1995-07-07 | 2004-02-24 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and fastening method therefor |
| DE10355798A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Screw bolt detaching tool for use in engine construction, has stop ring between drive shaft and head part of barrel extruder, and screw bolt that can be easily detached from drive shaft if ring is destroyed |
| CN105984510A (en) * | 2015-03-23 | 2016-10-05 | 福特全球技术公司 | Vehicle body structure |
| TWI568941B (en) * | 2015-04-16 | 2017-02-01 | Production method of leak - use adapter |
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