JPH10179476A - Freely expansion tube - Google Patents
Freely expansion tubeInfo
- Publication number
- JPH10179476A JPH10179476A JP34005396A JP34005396A JPH10179476A JP H10179476 A JPH10179476 A JP H10179476A JP 34005396 A JP34005396 A JP 34005396A JP 34005396 A JP34005396 A JP 34005396A JP H10179476 A JPH10179476 A JP H10179476A
- Authority
- JP
- Japan
- Prior art keywords
- outer tube
- tube
- ring
- fitting groove
- contact surface
- 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.)
- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000013011 mating Effects 0.000 claims 1
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Electric Vacuum Cleaner (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気掃除機に使用
される伸縮自在管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic tube used for a vacuum cleaner.
【０００２】[0002]
【従来の技術】従来、この種伸縮自在管としては、実開
昭４９−５８１６４号公報や実開昭５１−８３８３４号
公報に示されるものが知られている。これらの従来技術
においては、外管の先端部に雄螺子部を形成すると共
に、外管に嵌入する内パイプ外周に締付リングを嵌合
し、締付リングには軸方向に締め付けられた際に重合す
るテーパー状の割口を形成されている。締付リングは、
雄螺子部に螺合する雌螺子部を有する締付ナットに嵌合
し、締付リングを雄螺子部に螺合することにより締付リ
ングを締め付けて締付リング内面を内管外周に圧接し、
内管を外管に対して固定するようになっている。2. Description of the Related Art Conventionally, as this kind of telescopic tube, those shown in Japanese Utility Model Laid-Open No. 49-58164 and Japanese Utility Model Laid-Open No. 51-83834 are known. In these prior arts, a male screw portion is formed at the tip of the outer tube, and a tightening ring is fitted around the inner pipe that fits into the outer tube. And a tapered slit which is superimposed on the substrate. The tightening ring
The tightening ring is tightened by screwing the tightening ring to the male screw portion by fitting a tightening nut having a female screw portion to be screwed to the male screw portion to press the inner surface of the tightening ring against the inner tube outer periphery. ,
The inner tube is fixed to the outer tube.
【０００３】しかしながら、締付リングの割口には、互
いに重合するテーパー状部が形成されているが、割口の
幅が全長にわたり同一のため、締付ナットの雌螺子部を
外管の雄螺子部に螺合して締め付けても割口が完全に閉
塞されることがなく、この部分からの空気漏れが生じて
気密性が悪い問題があった。[0003] However, the slit of the tightening ring is formed with a tapered portion which overlaps with each other. Even if it is screwed into the screw portion and tightened, the slit is not completely closed, and air leaks from this portion, resulting in poor airtightness.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記問題点
に鑑みなされたもので、内外管の接合部の締付強度を低
下させることなく、気密性を向上し得る伸縮自在管を提
供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a telescopic tube capable of improving hermeticity without lowering the tightening strength of the joint between the inner and outer tubes. That is the task.
【０００５】[0005]
【課題を解決するための手段】本発明の第１の手段は、
螺子部を有する外管と、該外管に摺動自在に嵌合する内
管と、該内管の外周面に摺動自在に嵌合される締付リン
グと、該締付リングに形成した嵌合溝に嵌合され、前記
外管の螺子部に螺合する螺子部を有する締付ナットとを
備え、前記締付リングに軸方向に割口を形成し、該割口
の両側面の軸方向に交差する面に当接面を形成すると共
に、前記締付リングの外管側に位置する当接面を有する
側面側の嵌合溝を、外管側に向かって幅広に形成したこ
とを特徴とする。A first means of the present invention is as follows.
An outer tube having a screw portion, an inner tube slidably fitted to the outer tube, a clamping ring slidably fitted to the outer peripheral surface of the inner tube, and a clamping ring formed on the outer ring. A tightening nut fitted in the fitting groove and having a screw portion screwed to the screw portion of the outer tube, a slit is formed in the tightening ring in the axial direction, and both sides of the split hole are formed. A contact surface is formed on a surface intersecting in the axial direction, and a fitting groove on a side surface having a contact surface located on the outer tube side of the tightening ring is formed wider toward the outer tube. It is characterized by.
【０００６】本発明の第２の手段は、螺子部を有する外
管と、該外管に摺動自在に嵌合する内管と、該内管の外
周面に摺動自在に嵌合される締付リングと、該締付リン
グに形成した嵌合溝に嵌合され、前記外管の螺子部に螺
合する螺子部を有する締付ナットとを備え、前記締付リ
ングに軸方向に割口を形成し、割口の両側面の少なくと
も一方の側面から他方の側面に向かって突部を形成して
該突部と他方の側面とが対向する面を当接せしめると共
に、前記締付リングの一方の側面側の嵌合溝を、外管側
に向かって幅広に形成したことを特徴とする。A second means of the present invention is an outer tube having a screw portion, an inner tube slidably fitted to the outer tube, and slidably fitted to an outer peripheral surface of the inner tube. A tightening ring, and a tightening nut fitted in a fitting groove formed in the tightening ring and having a screw portion that is screwed into a screw portion of the outer tube. Forming a mouth, forming a protrusion from at least one side surface of the both sides of the split mouth toward the other side surface, abutting a surface where the protrusion portion and the other side surface face each other, and the tightening ring. The fitting groove on one side is formed to be wider toward the outer tube.
【０００７】本発明の第３の手段は、螺子部を有する外
管と、該外管に摺動自在に嵌合する内管と、該内管の外
周面に摺動自在に嵌合される締付リングと、該締付リン
グに形成した嵌合溝に嵌合され、前記外管の螺子部に螺
合する螺子部を有する締付ナットとを備え、前記締付リ
ングに軸方向に割口を形成し、該割口の両側面の軸方向
に交差する面に当接面を形成すると共に、前記締付リン
グの外管側に位置する当接面を有する側面側の嵌合溝
を、外管側に向かって幅広に形成すると共に、締付リン
グの外管側に位置する当接面を有する外管側端縁を、遊
端側に向かって幅広に形成したことを特徴とする。According to a third aspect of the present invention, there is provided an outer tube having a screw portion, an inner tube slidably fitted to the outer tube, and a slidably fitted outer peripheral surface of the inner tube. A tightening ring, and a tightening nut fitted in a fitting groove formed in the tightening ring and having a screw portion screwed into a screw portion of the outer tube. Forming a mouth, forming a contact surface on a surface intersecting the axial direction of both side surfaces of the split opening, and forming a fitting groove on a side surface side having a contact surface located on the outer tube side of the tightening ring. The outer ring side edge having a contact surface located on the outer tube side of the tightening ring is formed wider toward the free end side while being formed wider toward the outer tube side. .
【０００８】本発明の第４の手段は、螺子部を有する外
管と、該外管に摺動自在に嵌合する内管と、該内管の外
周面に摺動自在に嵌合される締付リングと、該締付リン
グに形成した嵌合溝に嵌合され、前記外管の螺子部に螺
合する螺子部を有する締付ナットとを備え、前記締付リ
ングに軸方向に割口を形成し、該割口の両側面の軸方向
に交差する面に当接面を形成し、前記締付リングの外管
側に位置する当接面を有する側面側の嵌合溝を、外管側
に向かって幅広に形成すると共に、前記締付リングの外
管側に位置する当接面を有する突出部を、遊端側に向か
って幅広に形成したことを特徴とする。According to a fourth aspect of the present invention, there is provided an outer tube having a screw portion, an inner tube slidably fitted to the outer tube, and a slidably fitted outer peripheral surface of the inner tube. A tightening ring, and a tightening nut fitted in a fitting groove formed in the tightening ring and having a screw portion that is screwed into a screw portion of the outer tube. Forming a mouth, forming a contact surface on a surface intersecting the axial direction of both sides of the split opening, and forming a fitting groove on a side surface having a contact surface located on the outer tube side of the tightening ring, It is characterized in that the projection is formed wider toward the outer tube, and the protrusion having a contact surface located on the outer tube side of the tightening ring is formed wider toward the free end.
【０００９】[0009]
【発明の実施の形態】１は合成樹脂製の外管で、一端部
外周に雄螺子部２を形成すると共に、一端部内周に端部
に向かって漸次径大となるテーパー部３を形成してい
る。４は合成樹脂製の内管で、前記外管１内に摺動自在
に嵌合されるようになっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes an outer tube made of a synthetic resin having a male screw portion 2 formed on the outer periphery of one end and a tapered portion 3 gradually increasing in diameter toward the end formed on the inner periphery of one end. ing. Reference numeral 4 denotes an inner tube made of a synthetic resin, which is slidably fitted in the outer tube 1.
【００１０】５は前記内管４の外周面に摺動自在に嵌合
する締付リングで、軸方向に割口６を形成し、後述する
締付ナット15によって締め付けることにより縮径されて
外管１と内管４とを任意の位置で固定するようになって
いる。前記締付リング５の割口６には、割口６一側面の
外管１側端部に、当接面７を有する第１突部８を割口６
他側面に向かって突設すると共に、割口６他側面に、第
１突部８の当接面７が当接する当接面９を有する第１凹
部10を形成している。Reference numeral 5 denotes a tightening ring which is slidably fitted on the outer peripheral surface of the inner tube 4 and has a slit 6 formed in the axial direction, which is reduced in diameter by being tightened by a tightening nut 15 which will be described later. The tube 1 and the inner tube 4 are fixed at an arbitrary position. A first protrusion 8 having an abutting surface 7 is provided on the side of the outer tube 1 on one side of the side of the slit 6.
A first recess 10 having a contact surface 9 with which the contact surface 7 of the first projection 8 comes into contact is formed on the other surface of the slit 6 so as to project toward the other side surface.
【００１１】11は前記割口６一側面から割口６他側面に
向かって突設された第２突部、12は前記割口６他側面に
形成された第２凹部で、第２突部11と第２凹部12が対向
する面には、第１突部８の当接面７と第１凹部10の当接
面９が当接した状態で、少許の間隙が形成されている。Reference numeral 11 denotes a second projecting portion projecting from one side surface of the slit 6 toward the other side surface of the slit 6, and reference numeral 12 denotes a second recess formed on the other side surface of the slit 6; A small gap is formed on the surface where the 11 and the second concave portion 12 face each other in a state where the contact surface 7 of the first projection 8 and the contact surface 9 of the first concave portion 10 are in contact with each other.
【００１２】13は前記締付リング５の外管１側端部に形
成された傾斜面、14は前記締付リング５外周に形成され
た嵌合溝で、前記割口６一側面側が外管１側端部に向か
って漸次幅広に形成されている。Reference numeral 13 denotes an inclined surface formed at the end of the tightening ring 5 on the outer tube 1 side, and reference numeral 14 denotes a fitting groove formed on the outer periphery of the tightening ring 5. The width is gradually increased toward one end.
【００１３】15は前記締付リング５が嵌入する締付ナッ
トで、内周面には、締付リング５の嵌合溝14に嵌合する
環状リブ16及び前記外管１の雄螺子部２に螺合する雌螺
子部17が形成されている。Reference numeral 15 denotes a tightening nut into which the tightening ring 5 is fitted. On the inner peripheral surface, an annular rib 16 which fits into the fitting groove 14 of the tightening ring 5 and the male screw portion 2 of the outer tube 1 are provided. Is formed with a female screw portion 17 that is screwed into the female screw portion.
【００１４】而して、外管１に対して内管４を摺動させ
て任意の長さに調整し、締付ナット15の雌螺子部17を外
管４の雄螺子部２に螺合して締め付けると、外管１のテ
ーパー部３が締付リング５の傾斜面13に当接し、締付リ
ング５を縮径して締付リング５内周を内管４外周に圧接
させ、外管１に対して内管４を固定する。Then, the inner tube 4 is slid with respect to the outer tube 1 to adjust the length to an arbitrary length, and the female screw portion 17 of the tightening nut 15 is screwed into the male screw portion 2 of the outer tube 4. Then, the tapered portion 3 of the outer tube 1 comes into contact with the inclined surface 13 of the tightening ring 5, the diameter of the tightening ring 5 is reduced, and the inner circumference of the tightening ring 5 is pressed against the outer circumference of the inner tube 4. The inner tube 4 is fixed to the tube 1.
【００１５】この状態においては、締付リング５の割口
６一側面側の嵌合溝14が外管１側に向かって漸次幅広に
形成されているため、図１に示すごとく、締付リング５
の割口６一側面側が外管１のテーパー部３に圧接されて
軸方向に変位し、第１突部８の当接面７が第１凹部10の
当接面９に圧接される。従って、割口６は完全に閉塞さ
れ、気密性が保持される。当接面７は割口６側面から突
出する第１突部８に形成したので、軸方向への変位量が
大きくなり、第１凹部10の当接面９への圧接力が大きく
なって気密性を一層向上することができる。In this state, since the fitting groove 14 on one side of the slit 6 of the tightening ring 5 is formed gradually wider toward the outer tube 1 side, as shown in FIG. 5
The one side surface of the slit 6 is pressed against the tapered portion 3 of the outer tube 1 and is displaced in the axial direction, so that the contact surface 7 of the first projection 8 is pressed against the contact surface 9 of the first concave portion 10. Therefore, the slit 6 is completely closed, and airtightness is maintained. Since the contact surface 7 is formed in the first projection 8 projecting from the side surface of the slit 6, the amount of displacement in the axial direction becomes large, and the pressure contact force of the first concave portion 10 on the contact surface 9 becomes large, so that airtightness is obtained. Properties can be further improved.
【００１６】尚、図５に示すごとく、第１突部８の外管
１側端部を、遊端側になるに従って漸次外管１側に向か
って幅広になるように形成してもよい。この構成であれ
ば、第１突部８の軸方向への変位量がより大きくなり、
当接面７、９の圧接力を一層増大させて、気密性を向上
することができる。As shown in FIG. 5, the end of the first projection 8 on the outer tube 1 side may be formed so as to gradually become wider toward the outer tube 1 toward the free end. With this configuration, the amount of displacement of the first protrusion 8 in the axial direction becomes larger,
The pressure contact force of the contact surfaces 7, 9 can be further increased, and the airtightness can be improved.
【００１７】[0017]
【発明の効果】本発明の請求項１の構成によれば、締付
強度を低下させることなく、気密性を向上することがで
きる等の効果を奏する。According to the structure of the first aspect of the present invention, there are obtained effects such as improvement in airtightness without lowering the tightening strength.
【００１８】本発明の請求項２の構成によれば、締付強
度を低下させることなく、気密性をより向上させること
ができる等の効果を奏する。According to the configuration of the second aspect of the present invention, there is an effect that the airtightness can be further improved without lowering the tightening strength.
【００１９】本発明の請求項３の構成によれば、締付強
度を低下させることなく、気密性をより向上させること
ができる等の効果を奏する。According to the configuration of the third aspect of the present invention, there is an effect that the airtightness can be further improved without lowering the tightening strength.
【００２０】本発明の請求項４の構成によれば、締付強
度を低下させることなく、気密性をより一層向上させる
ことができる等の効果を奏する。According to the structure of the fourth aspect of the present invention, there is an effect that the airtightness can be further improved without lowering the tightening strength.
【図１】本発明の一実施の形態の締付リングの締付状態
を示す要部断面図である。FIG. 1 is a sectional view of a main part showing a tightened state of a tightening ring according to an embodiment of the present invention.
【図２】同締付リングを締め付けていない状態を示す要
部断面図である。FIG. 2 is a sectional view of a main part showing a state in which the tightening ring is not tightened.
【図３】同締付リングの側面図である。FIG. 3 is a side view of the tightening ring.
【図４】同締付リングの他の方向から見た側面図であ
る。FIG. 4 is a side view of the fastening ring viewed from another direction.
【図５】同他の実施の形態の締付リングの側面図であ
る。FIG. 5 is a side view of a tightening ring according to another embodiment.
１ 外管 ２ 雄螺子部 ４ 内管 ５ 締付リング ６ 割口 ７ 当接面 ８ 第１突部 ９ 当接面 10 第１凹部 14 嵌合溝 15 締付ナット 16 環状リブ Reference Signs List 1 outer tube 2 male screw portion 4 inner tube 5 tightening ring 6 split opening 7 abutment surface 8 first protrusion 9 abutment surface 10 first recess 14 fitting groove 15 tightening nut 16 annular rib
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鹿野 裕隆 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hirotaka Kano 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.
Claims (4)
在に嵌合する内管と、該内管の外周面に摺動自在に嵌合
される締付リングと、該締付リングに形成した嵌合溝に
嵌合され、前記外管の螺子部に螺合する螺子部を有する
締付ナットとを備え、前記締付リングに軸方向に割口を
形成し、該割口の両側面の軸方向に交差する面に当接面
を形成すると共に、前記締付リングの外管側に位置する
当接面を有する側面側の嵌合溝を、外管側に向かって幅
広に形成したことを特徴とする伸縮自在管。An outer tube having a screw portion, an inner tube slidably fitted to the outer tube, a clamping ring slidably fitted to an outer peripheral surface of the inner tube, A fastening nut fitted in a fitting groove formed in the attachment ring and having a threaded portion screwed to the threaded portion of the outer tube. A contact surface is formed on a surface intersecting the axial direction on both side surfaces of the mouth, and a fitting groove on a side surface having a contact surface located on the outer tube side of the tightening ring is formed toward the outer tube side. A telescopic tube characterized by being formed wide.
在に嵌合する内管と、該内管の外周面に摺動自在に嵌合
される締付リングと、該締付リングに形成した嵌合溝に
嵌合され、前記外管の螺子部に螺合する螺子部を有する
締付ナットとを備え、前記締付リングに軸方向に割口を
形成し、割口の両側面の少なくとも一方の側面から他方
の側面に向かって突部を形成して該突部と他方の側面と
が対向する面を当接せしめると共に、前記締付リングの
一方の側面側の嵌合溝を、外管側に向かって幅広に形成
したことを特徴とする伸縮自在管。2. An outer tube having a screw portion, an inner tube slidably fitted to the outer tube, a clamping ring slidably fitted to an outer peripheral surface of the inner tube, and A fastening nut fitted in a fitting groove formed in the attachment ring and having a threaded portion screwed to the threaded portion of the outer tube, wherein a slit is formed in the fastening ring in the axial direction, A projection is formed from at least one side of the both side surfaces of the side surface to the other side surface so that the surface where the projection and the other side surface are in contact with each other, and the one side of the tightening ring is fitted. A telescopic tube wherein the mating groove is formed wider toward the outer tube.
在に嵌合する内管と、該内管の外周面に摺動自在に嵌合
される締付リングと、該締付リングに形成した嵌合溝に
嵌合され、前記外管の螺子部に螺合する螺子部を有する
締付ナットとを備え、前記締付リングに軸方向に割口を
形成し、該割口の両側面の軸方向に交差する面に当接面
を形成すると共に、前記締付リングの外管側に位置する
当接面を有する側面側の嵌合溝を、外管側に向かって幅
広に形成すると共に、締付リングの外管側に位置する当
接面を有する外管側端縁を、遊端側に向かって幅広に形
成したことを特徴とする伸縮自在管。3. An outer tube having a screw portion, an inner tube slidably fitted to the outer tube, a clamping ring slidably fitted to an outer peripheral surface of the inner tube, and A fastening nut fitted in a fitting groove formed in the attachment ring and having a threaded portion screwed to the threaded portion of the outer tube. A contact surface is formed on a surface intersecting the axial direction on both side surfaces of the mouth, and a fitting groove on a side surface having a contact surface located on the outer tube side of the tightening ring is formed toward the outer tube side. A telescopic tube having a wide width and an outer tube side edge having a contact surface located on the outer tube side of the tightening ring formed wider toward a free end side.
在に嵌合する内管と、該内管の外周面に摺動自在に嵌合
される締付リングと、該締付リングに形成した嵌合溝に
嵌合され、前記外管の螺子部に螺合する螺子部を有する
締付ナットとを備え、前記締付リングに軸方向に割口を
形成し、該割口の両側面の軸方向に交差する面に当接面
を形成し、前記締付リングの外管側に位置する当接面を
有する側面側の嵌合溝を、外管側に向かって幅広に形成
すると共に、前記締付リングの外管側に位置する当接面
を有する突出部を、遊端側に向かって幅広に形成したこ
とを特徴とする伸縮自在管。4. An outer tube having a screw portion, an inner tube slidably fitted to the outer tube, a clamping ring slidably fitted to an outer peripheral surface of the inner tube, A fastening nut fitted in a fitting groove formed in the attachment ring and having a threaded portion screwed to the threaded portion of the outer tube. A contact surface is formed on a surface intersecting in the axial direction on both side surfaces of the mouth, and a fitting groove on a side surface having a contact surface located on the outer tube side of the tightening ring is widened toward the outer tube side. And a projecting portion having a contact surface located on the outer tube side of the tightening ring is formed wider toward the free end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34005396A JPH10179476A (en) | 1996-12-19 | 1996-12-19 | Freely expansion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34005396A JPH10179476A (en) | 1996-12-19 | 1996-12-19 | Freely expansion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10179476A true JPH10179476A (en) | 1998-07-07 |
Family
ID=18333280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34005396A Withdrawn JPH10179476A (en) | 1996-12-19 | 1996-12-19 | Freely expansion tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10179476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1326522A4 (en) * | 2000-09-29 | 2007-04-11 | Oreck Holdings Llc | HANDLE AND DRAIN COUPLING ASSEMBLY FOR FLOOR MACHINES |
| JPWO2014106885A1 (en) * | 2013-01-07 | 2017-01-19 | 国立大学法人神戸大学 | Axial flow blood pump |
-
1996
- 1996-12-19 JP JP34005396A patent/JPH10179476A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1326522A4 (en) * | 2000-09-29 | 2007-04-11 | Oreck Holdings Llc | HANDLE AND DRAIN COUPLING ASSEMBLY FOR FLOOR MACHINES |
| JPWO2014106885A1 (en) * | 2013-01-07 | 2017-01-19 | 国立大学法人神戸大学 | Axial flow blood pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD01 | Notification of change of attorney |
Effective date: 20051226 Free format text: JAPANESE INTERMEDIATE CODE: A7421 |
|
| A761 | Written withdrawal of application |
Effective date: 20060822 Free format text: JAPANESE INTERMEDIATE CODE: A761 |