JPH0346314Y2 - - Google Patents
Info
- Publication number
- JPH0346314Y2 JPH0346314Y2 JP1986187115U JP18711586U JPH0346314Y2 JP H0346314 Y2 JPH0346314 Y2 JP H0346314Y2 JP 1986187115 U JP1986187115 U JP 1986187115U JP 18711586 U JP18711586 U JP 18711586U JP H0346314 Y2 JPH0346314 Y2 JP H0346314Y2
- Authority
- JP
- Japan
- Prior art keywords
- hose body
- flexible tube
- sealing part
- tube
- sealing
- 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
- 238000007789 sealing Methods 0.000 claims description 50
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000010349 pulsation Effects 0.000 description 29
- 239000012530 fluid Substances 0.000 description 9
- 210000002445 nipple Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は圧力流体供給装置から吐出される圧力
流体の脈動を吸収することにより、該脈動に伴う
騒音をなくすようにした脈動吸収管に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pulsation absorbing tube that eliminates noise accompanying the pulsation by absorbing the pulsation of pressure fluid discharged from a pressure fluid supply device.
［従来の技術］
一般に自動車のパワーステアリング装置及びそ
の他の各種油圧、空気圧装置などの圧力流体装置
においては、ポンプの如き圧力流体供給装置と、
その圧力流体によつて作動する作動装置と、これ
らの装置を連結する圧力伝達用配管及び作動装置
により構成されている。しかしながら、圧力流体
供給装置の吐出口から吐出される圧力流体は通常
圧力脈動を生じているため、圧力伝達用配管が振
動して騒音を生じ、著しいときは前記作動装置の
作動が不安定になるという欠点がある。このため
種々の脈動吸収管が考えられており、一般には脈
動吸収管を内外二重筒構造とし、内外筒の間隔の
一端を封止することにより反射形消音部を設け、
これにより脈動を吸収するものと脈動吸収管の内
径を部分的に絞つてオリフイス部を設け、このオ
リフイスを通過するときのオリフイス効果により
脈動を減衰させるものとに大別される。前者の例
として例えば特開昭61−6494号公報に記載された
第９図に示す脈動吸収管がある。この脈動吸収管
はホース本体ａ内部にその内径より小径の可撓管
ｂを内挿してなる二重管構造である。また可撓管
ｂの中間部外周に巻回された封止部ｃが設けら
れ、さらに封止部ｃに対応する部分のホース本体
ａ外周からソケツトｄをカシメてある。このため
ホース本体ａと可撓管ｂの間は封止部ｃにおいて
分断され、２つの反射形消音部ｅ及びｆが形成さ
れる。このようにすると、２つの反射形消音部を
設けても可撓管ｂを一本だけですますことが可能
なため、組付け等に優れている。[Prior Art] Generally, in pressurized fluid devices such as automobile power steering devices and various other hydraulic and pneumatic devices, a pressure fluid supply device such as a pump,
It consists of an actuating device operated by the pressure fluid, pressure transmission piping and an actuating device that connect these devices. However, since the pressure fluid discharged from the discharge port of the pressure fluid supply device usually generates pressure pulsations, the pressure transmission piping vibrates and generates noise, and in severe cases, the operation of the actuating device becomes unstable. There is a drawback. For this purpose, various pulsation absorption tubes have been considered, and generally, the pulsation absorption tube has a dual-tube structure with an inner and outer tube, and a reflection type muffling section is provided by sealing one end of the gap between the inner and outer tubes.
This can be broadly classified into two types: those that absorb pulsation, and those that partially reduce the inner diameter of the pulsation absorption tube and provide an orifice section, and dampen pulsation by the orifice effect when passing through the orifice. An example of the former is the pulsation absorbing tube shown in FIG. 9, which is described in Japanese Patent Application Laid-Open No. 61-6494. This pulsation absorbing tube has a double tube structure in which a flexible tube b having a smaller diameter than the inner diameter of the hose body a is inserted inside the hose body a. Further, a sealing portion c is provided around the outer periphery of the intermediate portion of the flexible tube b, and a socket d is further crimped from the outer periphery of the hose body a at a portion corresponding to the sealing portion c. Therefore, the hose body a and the flexible tube b are separated at the sealing part c, and two reflective muffling parts e and f are formed. In this way, even if two reflection type muffling parts are provided, only one flexible tube b is required, which is excellent in assembly.
また、実開昭60−149595号公報には、封止部を
ホース本体内へ内挿された金属製の内筒と一体に
形成されたものが示されている。 Further, Japanese Utility Model Application Publication No. 60-149595 discloses a hose in which the sealing portion is formed integrally with a metal inner cylinder inserted into the hose body.
［考案が解決しようとする問題点］
ところで上記従来例においては、可撓管ｂの周
囲に封止部ｃを巻回形成する必要があるので、そ
れだけ工数が多くなる。また可撓管ｂ上に封止部
ｃを設ける場合の位置決めを厳格にしなければ、
封止部ｃの設定位置にバラツキが生じ、その結果
反射消音の効率が変動する。そこで本考案は組付
け工数を削減し、かつ加工精度を高めて消音効率
の変動を抑制することを目的とする。[Problems to be Solved by the Invention] In the conventional example described above, it is necessary to wind the sealing part c around the flexible tube b, which increases the number of man-hours accordingly. Also, if the positioning is not strict when providing the sealing part c on the flexible tube b,
Variations occur in the set positions of the sealing portions c, and as a result, the efficiency of reflection silencing varies. Therefore, the purpose of the present invention is to reduce assembly man-hours, improve processing accuracy, and suppress fluctuations in silencing efficiency.
そのうえ、前記特開昭61−6494号公報記載のも
のは、封止部が金属であるため、ホース本体との
接触部は樹脂と金属との接触になつている。この
点は前記実開昭60−149595号公報記載のものも同
様である。しかし、ホース本体と封止部は脈動に
伴つてそれぞれ異なる運動をするので、両者の接
触部には間断なく力が加わることになり、このよ
うな金属と樹脂との接触では樹脂側の疲労が大き
くなり、製品寿命を短くする。そこで、係る部分
の耐疲労性を向上させて製品寿命を長くすること
が望まれる。本考案はかかる要請の実現を目的と
する。 Moreover, since the sealing portion of the hose described in Japanese Unexamined Patent Publication No. 61-6494 is made of metal, the contact portion with the hose body is in contact with resin and metal. This point is also the same as that described in the above-mentioned Japanese Utility Model Application Publication No. 149595/1983. However, since the hose body and the sealing part move differently with the pulsation, force is constantly applied to the contact area between the two, and such contact between metal and resin can cause fatigue on the resin side. becomes larger and shortens product life. Therefore, it is desired to improve the fatigue resistance of such parts and extend the product life. This invention aims to realize such a request.
［問題点を解決するための手段］
本考案の脈動吸収管は、ホース本体と、該ホー
ス本体の内径よりも小さい外径を有し、該ホース
本体内へ挿入されかつ両端が前記ホース本体の各
端部と間隔をもつて配される可撓管と、該可撓管
の外周上全周に亘つて形成されかつ前記ホース本
体の内周面へ密接する封止部とからなり、該封止
部の両側で前記ホース本体の内周面と前記可撓管
の外周面との間に反射形消音部を形成したものに
おいて、前記可撓管を前記封止部と一体に形成す
るとともに、封止部とホース本体との接触部を樹
脂相互の接触としたことを特徴とする。[Means for Solving the Problems] The pulsation absorption tube of the present invention has a hose body and an outer diameter smaller than the inner diameter of the hose body, is inserted into the hose body, and has both ends connected to the hose body. The hose is made up of a flexible tube disposed at intervals from each end, and a sealing portion formed over the entire outer circumference of the flexible tube and in close contact with the inner circumferential surface of the hose main body. A reflection type muffling portion is formed between the inner circumferential surface of the hose body and the outer circumferential surface of the flexible tube on both sides of the stop portion, wherein the flexible tube is formed integrally with the sealing portion, It is characterized in that the contact portion between the sealing portion and the hose body is in mutual contact with the resin.
［考案の作用］
可撓管の外周に一体の封止部を形成したから、
可撓管の長さ方向における封止部の設定位置は、
可撓管に対して常時一定である。そこで可撓管を
ホース本体内に入れ、所定位置において封止部の
外周をホース本体の内周面に密接させる。すると
封止部の両側に所定の反射形消音部が正確に形成
される。そのうえ、ホース本体と封止部の接触部
は樹脂相互の接触になるので、脈動によりホース
本体と封止部が異なる運動を行つても、接触部に
おける双方の疲労は少なくなる。[Operation of the invention] Since an integral sealing part is formed on the outer periphery of the flexible tube,
The setting position of the sealing part in the length direction of the flexible tube is
It is always constant for flexible tubes. Therefore, the flexible tube is inserted into the hose body, and the outer circumference of the sealing portion is brought into close contact with the inner circumferential surface of the hose body at a predetermined position. Predetermined reflective muffling sections are then precisely formed on both sides of the sealing section. Furthermore, since the contact portion between the hose body and the sealing portion is in mutual resin contact, even if the hose body and the sealing portion perform different movements due to pulsation, fatigue of both at the contact portion is reduced.
［実施例］
第１図乃至第３図は本考案の一実施例を示し、
第１図は本考案に係る脈動吸収管を用いた自動車
用パワーステアリング装置のシステム図、第２図
は脈動吸収管の要部の部分断面図、第３図は消音
効果を従来のものと比較して示すグラフである。
なお本実施例においては、圧力流体を油圧装置の
作動オイルとしてあるが、他に適宜流体を用いた
ものにも適用可能であることはもちろんである。[Example] Figures 1 to 3 show an example of the present invention,
Figure 1 is a system diagram of an automobile power steering device using the pulsation absorption tube according to the present invention, Figure 2 is a partial cross-sectional view of the main parts of the pulsation absorption tube, and Figure 3 compares the noise reduction effect with the conventional one. This is a graph shown as follows.
In this embodiment, the pressure fluid is used as the working oil of the hydraulic system, but it goes without saying that the present invention can also be applied to systems using other appropriate fluids.
まず第１図に示すように、脈動吸収管１は自動
車用パワーステアリング装置のパワーステアリン
グ作動部２と、油圧ポンプ３及びオイルタンク４
からなる作動油供給部との間に接続されて使用さ
れる。脈動吸収管１はホース本体５と、ホース本
体５より短くかつこの中へ内挿される可撓管６か
らなる二重構造をなす。可撓管６の外径はホース
本体５の内径よりも小さく、ホース本体５と可撓
管６の間に間隔が形成されるようになつている。
ホース本体５はゴムや合成樹脂等の適宜材料から
なり、本実施例では繊維を一体化して補強されて
いる。可撓管６はゴムや剛性樹脂等適宜の可撓性
の材料からなり、可撓管６の中間部にはホース本
体５の内径と等しい程度の外径を有する封止部７
が一体に形成されている。ホース本体５の外周部
分で封止部７に相当する金属製の締め付けリング
８が巻回されてカシメ固定されている。これによ
りホース本体５の内周面と封止部７の外周とは液
密に接触し、ホース本体５と可撓管６の間隔を左
右に２分して反射形消音部９及び１０を形成す
る。またホース本体５の両端部にはニツプル１１
が接続され、そのフランジ１２によつてカシメ固
定されて一体化されている。ニツプル１１にはパ
イプ１３が接続している。また脈動吸収管１の他
端も同様な構造であり、ニツプル１４が固着され
ている。なお、ホース本体５の両端部内側におい
て可撓管６の各端部はニツプル１１，１４と接続
せず間隔を有している。 First, as shown in FIG.
It is used by being connected to a hydraulic oil supply section consisting of. The pulsation absorption tube 1 has a double structure consisting of a hose body 5 and a flexible tube 6 that is shorter than the hose body 5 and inserted into the hose body 5. The outer diameter of the flexible tube 6 is smaller than the inner diameter of the hose body 5, so that a gap is formed between the hose body 5 and the flexible tube 6.
The hose body 5 is made of a suitable material such as rubber or synthetic resin, and in this embodiment is reinforced by integrating fibers. The flexible tube 6 is made of a suitable flexible material such as rubber or rigid resin, and a sealing portion 7 having an outer diameter approximately equal to the inner diameter of the hose body 5 is provided in the middle of the flexible tube 6.
are integrally formed. A metal tightening ring 8 corresponding to the sealing part 7 is wound around the outer circumference of the hose body 5 and fixed by caulking. As a result, the inner circumferential surface of the hose body 5 and the outer circumference of the sealing part 7 are in liquid-tight contact, and the interval between the hose body 5 and the flexible tube 6 is divided into two on the left and right, forming reflective sound-absorbing parts 9 and 10. do. Also, nipples 11 are provided at both ends of the hose body 5.
are connected and fixed by caulking by the flange 12 to be integrated. A pipe 13 is connected to the nipple 11. The other end of the pulsation absorbing tube 1 has a similar structure, and a nipple 14 is fixed thereto. Note that, inside both ends of the hose body 5, each end of the flexible tube 6 is not connected to the nipples 11, 14 and is spaced apart from the nipples 11, 14.
第２図は脈動吸収管１の要部断面図を示し、封
止部７の内径部はほぼホース本体５の内径と同程
度にまで拡大している。また反射形消音部９及び
１０の長さＡ，Ｂは消音すべき脈動波の波長に合
わせて適宜調整されている。この脈動吸収管１を
組立てるのは、まずホース本体５と可撓管６と
別々に形成しておく。このとき可撓管６の中間部
に封止部７を一体成形しておくことは当然であ
る。次に可撓管６をホース本体５内へ挿入し、所
定位置において封止部７に対応する位置でホース
本体５の外周から締め付けリング８をカシメる。
これによりホース本体５の内周と封止部７の外周
が密接し、ホース本体５と可撓管６の間隔はこの
部分で左右に分断される。したがつて可撓管６の
固定工程と同時に反射形消音部９，１０の形成も
なされることになる。その後、ホース本体５の両
端にニツプル１１及び１４を固定すれば脈動吸収
管１が組立てられる。 FIG. 2 shows a sectional view of a main part of the pulsation absorbing tube 1, and the inner diameter of the sealing portion 7 is enlarged to approximately the same extent as the inner diameter of the hose body 5. Further, the lengths A and B of the reflective muffling sections 9 and 10 are adjusted as appropriate according to the wavelength of the pulsating wave to be muffled. To assemble this pulsation absorbing tube 1, first, the hose body 5 and the flexible tube 6 are formed separately. At this time, it is a matter of course that the sealing part 7 is integrally molded in the middle part of the flexible tube 6. Next, the flexible tube 6 is inserted into the hose body 5, and the tightening ring 8 is caulked from the outer periphery of the hose body 5 at a predetermined position corresponding to the sealing portion 7.
As a result, the inner periphery of the hose main body 5 and the outer periphery of the sealing portion 7 are brought into close contact with each other, and the distance between the hose main body 5 and the flexible tube 6 is divided into left and right portions at this portion. Therefore, at the same time as the step of fixing the flexible tube 6, the reflective muffling parts 9 and 10 are formed. Thereafter, the nipples 11 and 14 are fixed to both ends of the hose body 5, and the pulsation absorbing tube 1 is assembled.
次に本実施例における脈動吸収管１の作用を説
明する。油圧ポンプ３から圧送された作動オイル
は、油圧管１３を通つてニツプル１１からホース
本体５内へ入り、可撓管６を経て反対側のニツプ
ル１４からパワーステアリング作動部２へ供給さ
れる。このときホース本体５内に入つた作動オイ
ルの本流Ｃは脈動状であるが、これから別れた分
流Ｄは、ニツプル１１と可撓管６の端部間に間隔
があるので、ここから反射形消音部９内へ入る。
しかし反射形消音部９は封止部７外周によつて行
き止まり状となつているので、封止部７において
反転し戻り、本流Ｃと合流する。さらに封止部７
内部に入つた本流Ｅは、封止部７が拡大室となつ
て逆にオリフイス部を形成しているため、ここで
矢示Ｆのような広がつた流れを形成して通過す
る。また可撓管６を通過した本流Ｇには、一度反
射形消音部１０内に入つてから反転して来た分流
Ｈが合流する。ゆえにホース本体５の入口側にお
いて脈動状であつた本流Ｃは、逆オリフイス部１
５による逆オリフイス効果並びに反射形消音部
９，１０による反転効果により脈動の減衰を受け
る。したがつて出口側の本流Ｈは整流されたもの
となる。その結果、第３図に示すように従来品と
比べ大きな減衰率が得られる。 Next, the operation of the pulsation absorbing tube 1 in this embodiment will be explained. The hydraulic oil pumped from the hydraulic pump 3 passes through the hydraulic pipe 13, enters the hose body 5 from the nipple 11, passes through the flexible pipe 6, and is supplied to the power steering operating section 2 from the nipple 14 on the opposite side. At this time, the main flow C of the working oil that has entered the hose body 5 is in a pulsating manner, but the branch flow D that separates from the main flow D is formed by a reflective noise reduction method because there is a gap between the nipple 11 and the end of the flexible tube 6. Enter section 9.
However, since the reflective muffling section 9 has a dead end shape due to the outer periphery of the sealing section 7, it turns around and returns at the sealing section 7, and merges with the main stream C. Furthermore, the sealing part 7
The main flow E that has entered the interior forms an expanded flow as shown by the arrow F, and passes through the sealing portion 7, which serves as an enlarged chamber and conversely forms an orifice portion. Further, the main flow G that has passed through the flexible tube 6 is joined by a branch flow H that has once entered the reflection type muffling section 10 and then reversed. Therefore, the main flow C that was pulsating on the inlet side of the hose body 5 is caused by the reverse orifice part 1.
The pulsation is attenuated by the reverse orifice effect caused by 5 and the reversal effect caused by the reflective mufflers 9 and 10. Therefore, the main flow H on the outlet side is rectified. As a result, as shown in FIG. 3, a larger attenuation factor can be obtained compared to the conventional product.
しかも、封止部７が可撓管６と一体に形成され
た樹脂製部分であるから、ホース本体５と封止部
７との接触部は樹脂相互となる。ゆえに、作動オ
イルの脈動により、ホース本体５と封止部７が異
なる運動を行つても、ホース本体５と封止部７の
接触部における双方の疲労は少なくなり、製品の
寿命が延びる。 Moreover, since the sealing part 7 is a resin part formed integrally with the flexible tube 6, the contact area between the hose body 5 and the sealing part 7 is made of resin. Therefore, even if the hose main body 5 and the sealing part 7 perform different movements due to the pulsation of the working oil, the fatigue of both the contact parts of the hose main body 5 and the sealing part 7 is reduced, and the life of the product is extended.
第４図乃至第８図には他の実施例を示す。これ
ら各実施例はいずれも前実施例における可撓管６
の封止部７部分を示すものである。したがつて前
記実施例と同一部材及び同一部分については同一
の符号を付して説明に代えるものとする。まず第
４図に示すものは、可撓管６周囲に２条に形成さ
れた凸条２０，２１からなる。このためホース本
体５の外周に締め付けリング８をカシメると、凸
条２０と２１がホース本体５の壁部に食い込み、
かつホース本体５の一部が凹部２２内へ入るの
で、取付位置が堅固になると共に、使用中にホー
ス本体５と可撓管６が相対的にズレることがな
い。 Other embodiments are shown in FIGS. 4 to 8. In each of these embodiments, the flexible tube 6 in the previous embodiment is
This shows the sealing portion 7 portion of the figure. Therefore, the same members and parts as in the previous embodiment will be designated by the same reference numerals and will not be described. First, the one shown in FIG. 4 consists of two protrusions 20 and 21 formed around the flexible tube 6. For this reason, when the tightening ring 8 is caulked around the outer circumference of the hose body 5, the protrusions 20 and 21 bite into the wall of the hose body 5.
In addition, since a portion of the hose body 5 enters into the recess 22, the mounting position is secured and the hose body 5 and the flexible tube 6 are not displaced relative to each other during use.
第５図は上記第４図の実施例に対して凹部２２
相当部に金属板等からなる補強プレート２３を埋
設一体化したものである。これにより締め付けリ
ング８のカシメを強くしても可撓管６側の変形を
防止できる。これと同様な目的で、第６図に示す
第１図乃至第２図のものと同様の封止部７を用い
る場合、この締め付けリング８によるカシメ相当
部に、補強板３０を埋設しておくようにすること
もできる。 FIG. 5 shows a recess 22 in the embodiment shown in FIG. 4 above.
A reinforcing plate 23 made of a metal plate or the like is embedded and integrated in the corresponding part. Thereby, even if the tightening ring 8 is strongly caulked, deformation of the flexible tube 6 side can be prevented. When using a sealing part 7 similar to the one shown in FIGS. 1 and 2 shown in FIG. 6 for the same purpose, a reinforcing plate 30 is buried in the part corresponding to the caulking by this tightening ring 8. You can also do it like this.
第７図は封止部７を内厚部４０としたものであ
る。したがつて可撓管６の貫通孔（作動オイル通
路）には変化がなく逆オリフイス効果率は生じな
いが、その代りに前記の如く締め付けリング８の
カシメに対する変形防止手段となり得る。 In FIG. 7, the sealing part 7 is made into an inner thick part 40. Therefore, the through hole (operating oil passage) of the flexible tube 6 does not change and the reverse orifice effect does not occur, but instead it can serve as a means for preventing deformation of the tightening ring 8 against caulking as described above.
第８図は上記第７図の実施例に加えて、さらに
貫通孔側へ肥大させた肉厚部５０を形成し、これ
によりオリフイス部５１を設けたものである。こ
のようにすると、オリフイス部５１におけるオリ
フイス効果によつて脈動を減衰できる。そのうえ
同時に締め付けリング８のカシメ時における変形
防止もできることは当然である。 In addition to the embodiment shown in FIG. 7, FIG. 8 shows an embodiment in which a thick wall portion 50 is further enlarged toward the through-hole side, thereby providing an orifice portion 51. In this way, the pulsation can be attenuated by the orifice effect in the orifice portion 51. Moreover, it goes without saying that deformation of the tightening ring 8 during caulking can also be prevented at the same time.
［考案の効果］
本考案に係る脈動吸収管は、ホース本体の内周
面と可撓管の外周面との間に形成された間隔を封
止するための封止部を可撓管と一体的に形成して
ある。ゆえに可撓管の外周に封止部を組付ける工
数を不要とし、工数削減を図ることができる。し
かも封止部の位置は成形型によつて定まるので、
別体の封止部を可撓管の外周に組付ける従来の場
合に比べ、可撓管の長さ方向における封止部の取
付位置を極めて精度よくすることができる。ゆえ
に封止部の位置がバラつかず変動することがない
ので、常に一定の脈動吸収効果を維持できる。[Effect of the invention] The pulsation absorbing tube according to the present invention has a sealing part for sealing the gap formed between the inner circumferential surface of the hose body and the outer circumferential surface of the flexible tube, which is integrated with the flexible tube. It is formed according to Therefore, there is no need to assemble the sealing portion around the outer periphery of the flexible tube, and the number of steps can be reduced. Moreover, the position of the sealing part is determined by the mold, so
Compared to the conventional case in which a separate sealing part is attached to the outer periphery of the flexible tube, the attachment position of the sealing part in the length direction of the flexible tube can be extremely accurately attached. Therefore, since the position of the sealing portion does not vary or fluctuates, a constant pulsation absorption effect can be maintained at all times.
そのうえ、ホース本体と封止部との接触部を樹
脂相互の接触にすることができるので、脈動吸収
に伴う接触部の疲労を少なくでき、製品の寿命を
長くすることができる。 Furthermore, since the contact portion between the hose body and the sealing portion can be brought into contact with the resin, fatigue of the contact portion due to pulsation absorption can be reduced, and the life of the product can be extended.
第１図乃至第８図は実施例を示し、第１図乃至
第３図は実施例に係り、第１図は使用状態を一部
切欠いて示すシステム図、第２図は要部の断面
図、第３図は消音効果を示すグラフである。第４
図乃至第８図はそれぞれ他の実施例における要部
の断面図である。第９図は従来例の要部の断面図
である。
符号の説明、１……脈動吸収管、５……ホース
本体、６……可撓管、７……封止部、９，１０…
…反射形消音部。
Figures 1 to 8 show an embodiment, Figures 1 to 3 relate to the embodiment, Figure 1 is a system diagram with a partial cutaway showing the state of use, and Figure 2 is a sectional view of main parts. , FIG. 3 is a graph showing the silencing effect. Fourth
8 through 8 are sectional views of main parts in other embodiments, respectively. FIG. 9 is a sectional view of the main parts of the conventional example. Explanation of symbols, 1... Pulsation absorption tube, 5... Hose body, 6... Flexible tube, 7... Sealing part, 9, 10...
...Reflective sound deadening section.
Claims (1)
い外径を有し、該ホース本体内へ挿入されかつ両
端が前記ホース本体の各端部と間隔をもつて配さ
れる可撓管と、該可撓管の外周上全周に亘つて形
成されかつ前記ホース本体の内周面へ密接する封
止部とからなり、該封止部の両側で前記ホース本
体の内周面と前記可撓管の外周面との間に反射形
消音部を形成したものにおいて、前記可撓管を前
記封止部と一体に形成するとともに、封止部とホ
ース本体との接触部を樹脂相互の接触としたこと
を特徴とする脈動吸収管。 a hose body, a flexible tube having an outer diameter smaller than an inner diameter of the hose body, inserted into the hose body and having both ends spaced apart from each end of the hose body; It consists of a sealing part formed over the entire outer circumference of the flexible tube and in close contact with the inner circumferential surface of the hose body, and on both sides of the sealing part, the inner circumferential surface of the hose body and the flexible tube are In the product in which a reflective sound damping part is formed between the hose body and the outer peripheral surface, the flexible tube is formed integrally with the sealing part, and the contact part between the sealing part and the hose body is made into mutual resin contact. A pulsating absorption tube featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187115U JPH0346314Y2 (en) | 1986-12-03 | 1986-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187115U JPH0346314Y2 (en) | 1986-12-03 | 1986-12-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391793U JPS6391793U (en) | 1988-06-14 |
| JPH0346314Y2 true JPH0346314Y2 (en) | 1991-09-30 |
Family
ID=31137292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986187115U Expired JPH0346314Y2 (en) | 1986-12-03 | 1986-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346314Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8827034B2 (en) * | 2013-01-18 | 2014-09-09 | Halla Visteon Climate Control Corporation | Pressure pulsation dampening device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616494A (en) * | 1984-06-20 | 1986-01-13 | 東海ゴム工業株式会社 | Pulsation absorbing hose |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149595U (en) * | 1984-03-15 | 1985-10-04 | 豊田工機株式会社 | Pressure fluid supply hose |
-
1986
- 1986-12-03 JP JP1986187115U patent/JPH0346314Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616494A (en) * | 1984-06-20 | 1986-01-13 | 東海ゴム工業株式会社 | Pulsation absorbing hose |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6391793U (en) | 1988-06-14 |
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