JP5869363B2 - Flexible pipe fittings - Google Patents

Flexible pipe fittings Download PDF

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JP5869363B2
JP5869363B2 JP2012030452A JP2012030452A JP5869363B2 JP 5869363 B2 JP5869363 B2 JP 5869363B2 JP 2012030452 A JP2012030452 A JP 2012030452A JP 2012030452 A JP2012030452 A JP 2012030452A JP 5869363 B2 JP5869363 B2 JP 5869363B2
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flange
phase
flexible pipe
peripheral surface
pipe joint
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JP2013007483A (en
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林　兼芳
兼芳 林
林　茂吉
茂吉 林
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Sankei Giken Co Ltd
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Sankei Giken Co Ltd
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Description

本発明は、フランジのない直管に接続される可撓性管継手に関する。   The present invention relates to a flexible pipe joint connected to a straight pipe without a flange.

フランジのない直管と管継手との接続は、一例として下記特許文献１の如く、雄ネジを有する締付ブッシュと、その先端に設けた環状のテーパパッキンと、継手本体の先端部内面に設けた雌ネジとで構成し、パッキンのテーパ面が継手本体の内部テーパ面に密着した状態で、締付ブッシュを回転して、その外周の雄ネジを継手本体の雌ネジに螺着締結するものが提案されている。   As an example, connection between a straight pipe without a flange and a pipe joint is provided on the inner surface of the end of the joint main body, a fastening bush having a male screw, an annular taper packing provided at the end thereof, as disclosed in Patent Document 1 below. With the female thread of the packing, with the taper surface of the packing in close contact with the internal taper surface of the joint body, rotating the tightening bush and screwing and fastening the male thread on the outer periphery to the female thread of the joint body Has been proposed.

特開平８−２６１３７１号公報JP-A-8-261371

従来の直管と管継手との接続構造は、部品点数が多く且つ、構造が複雑である欠点があった。
また、本出願人の調査によれば可撓性の管継手を直管に、直接締結固定する信頼性の高い従来技術は検索されなかった。
そこで本発明は、構造が簡単で取り扱い易く、直管に接続可能な信頼性の高い管継手を提供することを課題とする。 The conventional connection structure between a straight pipe and a pipe joint has a drawback that the number of parts is large and the structure is complicated.
Further, according to the investigation by the present applicant, a highly reliable conventional technique for directly fastening and fixing a flexible pipe joint to a straight pipe has not been searched.
Therefore, an object of the present invention is to provide a highly reliable pipe joint that is simple in structure and easy to handle and can be connected to a straight pipe.

請求項１に記載の本発明は、フランジの存在しない管(1)の端部に接続される可撓性管継手において、
筒状に形成され、軸方向の端部の外周に小フランジ部(2)が一体に突設された可撓性の継手本体(3)と、
その小フランジ部(2)の軸方向の両平面を挟持すると共に、それぞれ外直径が前記小フランジ部(2)の外直径より大に形成され、その小フランジ部(2)の外周より外側位置で、周方向に離間して複数のボルト孔(4)を有する環状の第１相フランジ(5)と第２相フランジ(6)とを具備し、
前記継手本体(3)の小フランジ部(2)は、その半径方向の端部に環状の剛性体(7)が内装され、
前記第１相フランジ(5)は、その軸方向の端面には、前記小フランジ部(2)の軸方向端面およびその半径方向の外周端面の一部に断面Ｌ字状に当接するＬ字当接部(8)を有し、
第２相フランジ(6)は、その内周面が前記小フランジ部(2)の付根に被嵌され、その軸方向の端面で、前記小フランジ部(2)の前記剛性体(7)に整合する位置に、その剛性体(7)の半径方向の厚みより幅の広い環状の第２凹陥部(12)を有し、
第１相フランジ(5)と第２相フランジ(6)とにより継手本体(3)の小フランジ部(2)を挟持締結したとき、その第２相フランジ(6)の第２凹陥部(12)が前記剛性体(7)の外周近傍の前記可撓性の部材に食い込んで、その小フランジ部(2)を半径方向の中心側に変形し、継手本体(3)の内周面(13)が前記管(1)の外周面に圧接して、管(1)と継手本体(3)との接触部間が液密に形成されることを特徴とする可撓性管継手である。 The present invention as set forth in claim 1 is a flexible pipe joint connected to an end of a pipe (1) having no flange.
A flexible joint body (3) formed in a cylindrical shape and integrally projecting a small flange portion (2) on the outer periphery of the axial end portion;
While sandwiching both axial planes of the small flange portion (2), the outer diameter is formed to be larger than the outer diameter of the small flange portion (2), and is positioned outside the outer periphery of the small flange portion (2). And an annular first phase flange (5) and a second phase flange (6) having a plurality of bolt holes (4) spaced apart in the circumferential direction,
The small flange portion (2) of the joint body (3) is internally provided with an annular rigid body (7) at its radial end.
The first phase flange (5) has an L-shaped contact on its axial end face that is in contact with the axial end face of the small flange portion (2) and a part of its radially outer peripheral end face in an L-shaped cross section. Has a contact (8),
The inner peripheral surface of the second phase flange (6) is fitted on the root of the small flange portion (2), and the axial end surface thereof is attached to the rigid body (7) of the small flange portion (2). In the aligned position, there is an annular second recess (12) wider than the radial thickness of the rigid body (7),
When the small flange portion (2) of the joint body (3) is clamped and fastened by the first phase flange (5) and the second phase flange (6), the second recessed portion (12 ) Bites into the flexible member near the outer periphery of the rigid body (7), deforms the small flange portion (2) to the center side in the radial direction, and the inner peripheral surface (13) of the joint body (3). ) Is press-contacted to the outer peripheral surface of the pipe (1) to form a liquid-tight joint between the contact portions of the pipe (1) and the joint body (3).

請求項２に記載の本発明は、請求項１に記載の可撓性管継手において、
前記環状の第２凹陥部(12)の半径方向の最大直径が、前記小フランジ部(2)の外周直径に整合し、第１相フランジ(5)のＬ字当接部(8)と第２相フランジ(6)とにより継手本体(3)の小フランジ部(2)を挟持締結したとき、第２凹陥部(12)が小フランジ部(2)の外周面を被嵌するように構成された可撓性管継手である。
請求項３に記載の本発明は、請求項１または請求項２に記載の可撓性管継手において、前記第１相フランジ(5)またはそれに隣接する第３相フランジ(23)に、管(1)の外周面に咬着して、第１相フランジ(5)が軸方向に移動しないようにした軸方向拘束手段(22)を設けた可撓性管継手である。 The present invention according to claim 2 is the flexible pipe joint according to claim 1,
The maximum diameter in the radial direction of the annular second recessed portion (12) matches the outer diameter of the small flange portion (2), and the L-shaped contact portion (8) of the first phase flange (5) When the small flange part (2) of the joint body (3) is clamped and fastened with the two-phase flange (6), the second recessed part (12) is configured to fit the outer peripheral surface of the small flange part (2) Flexible pipe joint.
According to a third aspect of the present invention, there is provided the flexible pipe joint according to the first or second aspect, wherein the first phase flange (5) or the third phase flange (23) adjacent thereto is provided with a pipe ( This is a flexible pipe joint provided with axial restraining means (22) which is engaged with the outer peripheral surface of 1) and prevents the first phase flange (5) from moving in the axial direction.

請求項４に記載の本発明は、請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)の内周面に第１凹部(9)を有し、その第１凹部(9)に咬着体(10)を半径方向に移動自在に内装し且つ、その咬着体(10)を半径方向の中心側に押圧する押圧手段(11)を有する可撓性管継手である。
請求項５に記載の発明は、請求項４に記載の可撓性管継手において、
その第１凹部(9)が、前記第１相フランジ(5)の内周面に環状に形成され、
その第１凹部(9)に、互いに周方向に離間して配置される複数の前記咬着体(10)および、各前記咬着体(10)間に介装されるスペーサ(14)と、を具備し、
前記咬着体(10)は、平面が略扇型の複数枚の金属板片(10a) がゴム板(10b)を介して積層され、
その前記咬着体(10)が、第１相フランジ(5)に螺着された前記押圧手段(11)であるボルトにより、管(1)の外周に接離自在に押圧される可撓性管継手である。
請求項６に記載の発明は、請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)に隣接する第３相フランジ(23)の内周面に楔保持部(24)を設け、そこに楔(21)を保持して、各相フランジ間(6)(5)(23)を締結することにより、その楔(21)を管(1)の外周面に咬着する可撓性管継手である。 According to a fourth aspect of the present invention, in the flexible pipe joint according to the third aspect,
The axial direction restraining means (22) has a first recess (9) on the inner peripheral surface of the first phase flange (5), and the biting body (10) is radially arranged in the first recess (9). It is a flexible pipe joint that is movably mounted and has pressing means (11) that presses the biting body (10) toward the center in the radial direction.
The invention according to claim 5 is the flexible pipe joint according to claim 4,
The first recess (9) is annularly formed on the inner peripheral surface of the first phase flange (5),
In the first recess (9), a plurality of the biting bodies (10) that are spaced apart from each other in the circumferential direction, and a spacer (14) interposed between the biting bodies (10), Comprising
The biting body (10) is a laminate of a plurality of metal plate pieces (10a) having a substantially fan-shaped plane through a rubber plate (10b),
Flexibility that the biting body (10) is detachably pressed against the outer periphery of the pipe (1) by a bolt as the pressing means (11) screwed to the first phase flange (5) It is a pipe joint.
The invention according to claim 6 is the flexible pipe joint according to claim 3,
The axial restraining means (22) is provided with a wedge holding portion (24) on the inner peripheral surface of the third phase flange (23) adjacent to the first phase flange (5), and holds the wedge (21) there. Thus, it is a flexible pipe joint for fastening the wedge (21) to the outer peripheral surface of the pipe (1) by fastening the interphase flanges (6), (5) and (23).

請求項７に記載の発明は、請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)の内周面に楔保持部(24)を設け、そこに楔（21）を保持して、両相フランジ(6)(5)間を締結することにより、その楔(21)を管(1)の外周面に咬着する可撓性管継手である。
請求項８に記載の発明は、請求項７に記載の可撓性管継手において、
楔(21)の端面と小フランジ部(2)の端面との間に、その楔(21)の最大径より大なる径の剛性の環状体(25)が介装され、その環状体(25)に整合する環状凹陥部(26)が第１相フランジ(5)の端面に形成された可撓性管継手である。 The invention according to claim 7 is the flexible pipe joint according to claim 3,
The axial direction restraining means (22) is provided with a wedge holding portion (24) on the inner peripheral surface of the first phase flange (5), holding the wedge (21) therein, and the both phase flanges (6) (5 ) Is a flexible pipe joint that bites the wedge (21) to the outer peripheral surface of the pipe (1).
The invention according to claim 8 is the flexible pipe joint according to claim 7,
A rigid annular body (25) having a diameter larger than the maximum diameter of the wedge (21) is interposed between the end face of the wedge (21) and the end face of the small flange portion (2), and the annular body (25 ) Is a flexible pipe joint having an annular recess (26) aligned with the end face of the first phase flange (5).

本発明の可撓性管継手は、第１相フランジ５と、第２相フランジ６とにより継手本体３の小フランジ部２を挟持締結したとき、その第２相フランジ６の第２凹陥部12が剛性体７の外周近傍の可撓性の部材に食い込んで、その小フランジ部２を半径方向中心側に変形し、継手本体３の軸方向の内周面13が管１の外周面に圧接して、管１と継手本体３との接触部間が液密に形成される効果がある。
特に、第１相フランジ５のＬ字当接部８が小フランジ部２の外周に被嵌されて、その締結時に、小フランジ部２が外周方向に変形することを抑制し、結果、小フランジ部２が内周方向に変形されることにより、管１との液密性を確実に保持することができる。
さらには、第２相フランジ６の第２凹陥部12が図２の如く剛性体７の外周近傍の可撓性の部材に食い込んだとき、環状の剛性体７の存在により小フランジ部２の変形部19を定形化し、第１相フランジ５と第２相フランジ６との相対関係を、常に一定にして安定性の高い管継手を提供できる。 When the small flange portion 2 of the joint body 3 is clamped and fastened by the first phase flange 5 and the second phase flange 6, the flexible pipe joint of the present invention has the second recessed portion 12 of the second phase flange 6. Bites into a flexible member near the outer periphery of the rigid body 7 and deforms the small flange portion 2 toward the center in the radial direction, so that the axial inner peripheral surface 13 of the joint body 3 is pressed against the outer peripheral surface of the pipe 1. Thus, there is an effect that the contact portion between the pipe 1 and the joint body 3 is formed in a liquid-tight manner.
In particular, the L-shaped contact portion 8 of the first phase flange 5 is fitted on the outer periphery of the small flange portion 2, and the small flange portion 2 is prevented from being deformed in the outer peripheral direction at the time of fastening. By deforming the portion 2 in the inner circumferential direction, the liquid tightness with the tube 1 can be reliably maintained.
Furthermore, when the second recessed portion 12 of the second phase flange 6 bites into a flexible member near the outer periphery of the rigid body 7 as shown in FIG. 2, the deformation of the small flange portion 2 is caused by the presence of the annular rigid body 7. The portion 19 is shaped, and the relative relationship between the first phase flange 5 and the second phase flange 6 is always kept constant, so that a highly stable pipe joint can be provided.

上記構成において、請求項２に記載のように、第２凹陥部12の半径方向の最大直径を小フランジ部２の外周直径に整合させた場合には、第１相フランジ５のＬ字当接部８と第２相フランジ６の第２凹陥部12とにより、継手本体３の小フランジ部２の外周面を被嵌し、小フランジ部２の変形部19が半径方向外側に広がらないように抑制することができる。
そして、第２凹陥部12の歪みに伴う応力を半径方向中心側に向かわせ、継手本体３の内周面13を管１の外周に圧接して液密性を確実に確保することができる。
上記構成において、請求項３に記載のように、前記第１相フランジ５またはそれに隣接する第３相フランジ23に、管１の外周面に咬着して、第１相フランジ５が軸方向に移動しないようにした軸方向拘束手段22を設けた場合には、さらに確実に液密性を確保することができる。 In the above configuration, when the maximum radial diameter of the second recessed portion 12 is matched with the outer peripheral diameter of the small flange portion 2 as described in claim 2, the L-shaped contact of the first phase flange 5 is achieved. The outer peripheral surface of the small flange portion 2 of the joint body 3 is fitted by the portion 8 and the second recessed portion 12 of the second phase flange 6 so that the deformed portion 19 of the small flange portion 2 does not spread outward in the radial direction. Can be suppressed.
Then, the stress associated with the distortion of the second recessed portion 12 is directed toward the center in the radial direction, and the inner peripheral surface 13 of the joint body 3 can be pressed against the outer periphery of the pipe 1 to ensure liquid tightness.
In the above configuration, as described in claim 3, the first phase flange 5 or the third phase flange 23 adjacent thereto is engaged with the outer peripheral surface of the pipe 1 so that the first phase flange 5 is axially disposed. When the axial direction restraining means 22 that is prevented from moving is provided, the liquid tightness can be more reliably ensured.

上記構成において、請求項４に記載のように、軸方向拘束手段22として、第１相フランジ５の内周面に第１凹部９を設け、その第１凹部９に咬着体10を半径方向に移動自在に内装し且つ、その咬着体10を半径方向の中心側に押圧する押圧手段11を設けた場合には、より有効な軸方向拘束手段22となる。
上記構成において、請求項５に記載のように、平面が略扇型の複数枚の金属板片10aをゴム板10bを介して積層して咬着体10とし、複数の咬着体10の間にスペーサ14を配置し、各咬着体10をボルトからなる押圧手段11によって押圧した場合には、中間に存在するゴム材によって管１の外周に馴染ませ、管１の外周に傷をつけることを可及的に防止し得る。
それにより、耐久性の高い可撓性管継手を提供できる。
上記構成において、請求項６に記載のように、軸方向拘束手段22として、第１相フランジ５に隣接する第３相フランジ23の内周面に楔保持部24を設け、そこに楔21を保持して、各相フランジ間６，５，23を締結することにより、その楔21を管１の外周面に咬着した場合には、より有効な軸方向拘束手段22となる。 In the above configuration, as described in claim 4, as the axial direction restraining means 22, the first recess 9 is provided on the inner peripheral surface of the first phase flange 5, and the bite body 10 is placed in the first recess 9 in the radial direction. If the pressing means 11 that presses the bite body 10 toward the center in the radial direction is provided, the axial direction restraining means 22 becomes more effective.
In the above configuration, as described in claim 5, a plurality of metal plate pieces 10a each having a substantially fan-shaped plane are laminated via rubber plates 10b to form an occlusal body 10, and When the spacers 14 are arranged on the inner side of the tube 1 and the respective biting bodies 10 are pressed by the pressing means 11 made of bolts, the outer periphery of the tube 1 is adjusted by the rubber material present in the middle, and the outer periphery of the tube 1 is damaged. Can be prevented as much as possible.
Thereby, a highly durable flexible pipe joint can be provided.
In the above configuration, as described in claim 6, as the axial direction restraining means 22, the wedge holding portion 24 is provided on the inner peripheral surface of the third phase flange 23 adjacent to the first phase flange 5, and the wedge 21 is provided there. By holding and fastening the interphase flanges 6, 5, and 23, when the wedge 21 is bitten on the outer peripheral surface of the pipe 1, the axial direction restraining means 22 becomes more effective.

請求項７に記載の発明は、第１相フランジ５の内周面に楔保持部24を設け、そこに楔21を保持して、両相フランジ６，５間を締結することにより、その楔21を管１の外周面に咬着する可撓性管継手である。この場合には、全体の構造をより単純にして、取扱易い可撓性管継手となる。
請求項８に記載の発明は、請求項７に記載の可撓性管継手において、楔21の端面と小フランジ部２の端面との間に、その楔21の最大径より大きな剛性の環状体25が介装され、その環状体25に整合する環状凹陥部26が第１相フランジ５の端面に形成された可撓性管継手である。この場合には、楔21の端面で可撓性管継手の小フランジ部２が損傷することを防止できる。 According to the seventh aspect of the present invention, the wedge holding portion 24 is provided on the inner peripheral surface of the first phase flange 5, the wedge 21 is held there, and the wedges are clamped between the two phase flanges 6 and 5, thereby the wedge. This is a flexible pipe joint that bites 21 to the outer peripheral surface of the pipe 1. In this case, the overall structure is simplified, and the flexible pipe joint is easy to handle.
According to an eighth aspect of the present invention, in the flexible pipe joint according to the seventh aspect, between the end surface of the wedge 21 and the end surface of the small flange portion 2, a rigid annular body having a larger diameter than the maximum diameter of the wedge 21. 25 is a flexible pipe joint in which an annular recessed portion 26 that is fitted to the annular body 25 is formed on the end face of the first phase flange 5. In this case, it is possible to prevent the small flange portion 2 of the flexible pipe joint from being damaged at the end face of the wedge 21.

本発明の管継手の軸に平行な縦断面図であって、締結前の状態を示す。It is a longitudinal cross-sectional view parallel to the axis | shaft of the pipe joint of this invention, Comprising: The state before fastening is shown. 同締結後の状態を示す。The state after the fastening is shown. 同継手に用いられる第２相フランジ６の正面図及びＢ−Ｂ矢視断面図。The front view and BB arrow sectional drawing of the 2nd phase flange 6 used for the joint. 同継手に用いられる第１相フランジ５の正面図及びＢ−Ｂ矢視断面図。The front view and BB arrow sectional drawing of the 1st phase flange 5 used for the joint. 同継手の締結状態を示す斜視図。The perspective view which shows the fastening state of the joint. 本発明の継手の第１相フランジ５の他の例を示す軸直角断面図及びＢ−Ｂ矢視断面図。The axis right angle sectional view and BB arrow sectional view showing other examples of the 1st phase flange 5 of the joint of the present invention. 本発明の他の管継手の軸に平行な縦断面図であって、締結前の状態を示す。It is a longitudinal cross-sectional view parallel to the axis | shaft of the other pipe joint of this invention, Comprising: The state before fastening is shown. 本発明の他の管継手の軸に平行な縦断面図であって、締結前の状態を示す。It is a longitudinal cross-sectional view parallel to the axis | shaft of the other pipe joint of this invention, Comprising: The state before fastening is shown. 同管継手に用いる楔21の正面図および断面図。The front view and sectional drawing of the wedge 21 used for the pipe joint.

次に、図面に基づいて本発明の実施の形態につき説明する。
本発明の可撓性管継手は、図１及び図２，図５に示す如く、軸方向両端に一対の小フランジ部２を有する可撓性の継手本体３と、金属製の第１相フランジ５及び第２相フランジ６とからなる。
その継手本体３は、可撓性材料としてゴム材からなり、その小フランジ部２の半径方向外周端部に金属材からなる環状の剛性体７が埋設されている。この剛性体７の横断面は矩形に形成され、その長辺側が小フランジ部２の外周面に平行に位置する。そして剛性体７の外周を含めて継手本体３内には、タイヤコード15が埋設されている。 Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 2, and 5, the flexible pipe joint of the present invention includes a flexible joint body 3 having a pair of small flange portions 2 at both ends in the axial direction, and a metal first phase flange. 5 and the second phase flange 6.
The joint body 3 is made of a rubber material as a flexible material, and an annular rigid body 7 made of a metal material is embedded in the radially outer peripheral end portion of the small flange portion 2. The cross section of the rigid body 7 is formed in a rectangular shape, and its long side is positioned in parallel with the outer peripheral surface of the small flange portion 2. A tire cord 15 is embedded in the joint body 3 including the outer periphery of the rigid body 7.

第１相フランジ５と第２相フランジ６は、継手本体３の小フランジ部２の両平面を挟持する共に、夫々の外直径が小フランジ部２の外直径より大に形成され、その小フランジ部２の外側位置で周方向に離間して複数のボルト孔４を有する。第１相フランジ５は、その内周面に環状溝からなる第１凹部９を有し、その第１凹部９に咬着体10が半径方向に移動自在に内装されている。その咬着体10は、この例ではボルトからなる押圧手段11により半径方向の中心側に押圧される。即ち、第１相フランジ５の外周に設けられた複数のネジ孔20に押圧手段11が螺着され、その先端が咬着体10を中心側に押圧する。   The first phase flange 5 and the second phase flange 6 sandwich both the flat surfaces of the small flange portion 2 of the joint body 3 and have outer diameters larger than the outer diameter of the small flange portion 2. A plurality of bolt holes 4 are spaced apart in the circumferential direction at positions outside the portion 2. The 1st phase flange 5 has the 1st recessed part 9 which consists of an annular groove in the internal peripheral surface, and the biting body 10 is incorporated in the 1st recessed part 9 so that a movement to a radial direction is possible. The biting body 10 is pressed toward the center in the radial direction by pressing means 11 made of a bolt in this example. That is, the pressing means 11 is screwed into the plurality of screw holes 20 provided on the outer periphery of the first phase flange 5, and the tip thereof presses the bite body 10 toward the center side.

この咬着体10は、その先端平面が管１の外周に整合する円弧状に形成され且つ、その横断面先端は爪状に突設され、その爪部が管１の外面に咬着する。それによって、第１相フランジ５を管１に対して軸線方向に移動しないように位置決めする。この咬着体10および押圧手段11により、本発明の軸方向拘束手段22を構成する。
第１相フランジ５の一側面には、横断面Ｌ字状の環状のＬ字当接部８が凹陥されている。このＬ字当接部８の内周面は、継手本体３の小フランジ部２の一端面及び外周面に整合する。なお、Ｌ字当接部８の深さは、小フランジ部２の幅よりも小に形成されている。 The bite body 10 is formed in an arc shape whose tip plane is aligned with the outer periphery of the tube 1, and the tip of the cross section projects in a claw shape, and the claw portion bites the outer surface of the tube 1. Thereby, the first phase flange 5 is positioned so as not to move in the axial direction with respect to the pipe 1. The biting body 10 and the pressing means 11 constitute the axial direction restraining means 22 of the present invention.
An annular L-shaped contact portion 8 having an L-shaped cross section is recessed on one side surface of the first phase flange 5. The inner peripheral surface of the L-shaped contact portion 8 is aligned with the one end surface and the outer peripheral surface of the small flange portion 2 of the joint body 3. Note that the depth of the L-shaped contact portion 8 is formed to be smaller than the width of the small flange portion 2.

次に、第２相フランジ６は、その一端面において剛性体７に対向する位置に環状溝からなる第２凹陥部12が形成されている。第２凹陥部12の溝幅は、剛性体７の厚みよりも大きく且つ、第２凹陥部12の半径方向の最大直径は小フランジ部２の最大直径に等しい。そしてこの第２凹陥部12は、第１相フランジ５に対向する。   Next, the second phase flange 6 has a second recessed portion 12 formed of an annular groove at a position facing the rigid body 7 on one end face thereof. The groove width of the second recessed portion 12 is larger than the thickness of the rigid body 7, and the maximum radial diameter of the second recessed portion 12 is equal to the maximum diameter of the small flange portion 2. The second recessed portion 12 faces the first phase flange 5.

（作用）
このようにしてなる継手本体３，第１相フランジ５，第２相フランジ６は、図１に示す如く、フランジのない直管からなる管１の外周に被嵌される。そして第１相フランジ５の押圧手段11がネジ孔20に螺着され、その先端が咬着体10を半径方向中心側に押圧し、その先端縁が管１に咬着する。
さらに、一対の第１相フランジ５，第２相フランジ６間が、複数のボルト17（この例では４つ）とナット18及びワッシャ16とにより軸方向に締結固定される。すると図２に示す如く、剛性体７近傍のゴム材からなる可撓性材料を押しつぶし、第２凹陥部12内に変形部19が進入する。 (Function)
The joint body 3, the first phase flange 5, and the second phase flange 6 thus constructed are fitted on the outer periphery of the pipe 1 made of a straight pipe without a flange, as shown in FIG. Then, the pressing means 11 of the first phase flange 5 is screwed into the screw hole 20, the tip presses the bite body 10 toward the radial center, and the tip edge bites the tube 1.
Further, the pair of first phase flange 5 and second phase flange 6 are fastened and fixed in the axial direction by a plurality of bolts 17 (four in this example), nuts 18 and washers 16. Then, as shown in FIG. 2, the flexible material made of a rubber material in the vicinity of the rigid body 7 is crushed, and the deformed portion 19 enters the second recessed portion 12.

このとき小フランジ部２の外周面は、第１相フランジ５のＬ字当接部８及び第２凹陥部12の最大直径の内壁に保持され、小フランジ部２が半径方向外周に変形するのを防止する。そして前記、押しつぶしに伴い、小フランジ部２を内周面側に変形させ、その内周面13と管１とを圧着し、液密性を確保する。この例では、図５に示す如く、継手本体３の両端に夫々一対づつの第１相フランジ５と第２相フランジ６とが配置されている。
なお、継手本体３の一方側はフランジ付きの管１に連結することも可能である。 At this time, the outer peripheral surface of the small flange portion 2 is held by the L-shaped abutting portion 8 of the first phase flange 5 and the inner wall of the maximum diameter of the second recessed portion 12, and the small flange portion 2 is deformed to the outer periphery in the radial direction. To prevent. Then, along with the crushing, the small flange portion 2 is deformed to the inner peripheral surface side, and the inner peripheral surface 13 and the tube 1 are pressure-bonded to ensure liquid tightness. In this example, as shown in FIG. 5, a pair of a first phase flange 5 and a second phase flange 6 are disposed at both ends of the joint body 3.
Note that one side of the joint body 3 can be connected to a pipe 1 with a flange.

次に、図６は第１相フランジ５の他の例であり、この例が図１，図２，図４のそれと異なる点は、咬着体10及びスペーサ14である。
咬着体10は、平面が略扇型の複数枚の金属板片10aと、各金属板片10a間を接続するゴム板10bとからなる。そしてこの例では、３つの咬着体10の間にスペーサ14が介装されている。このスペーサ14によって、３つの咬着体10を周方向に位置決めする。そして押圧手段11をネジ孔20に螺着することにより、各咬着体10を半径方向中心側に押圧し、その金属板片10aが管１の外周に咬着される。このときゴム板10bの弾性の作用により、各金属板片10aの先端が管１の外周に均等に締結される。 Next, FIG. 6 shows another example of the first phase flange 5, and this example is different from that of FIGS. 1, 2, and 4 in the bite body 10 and the spacer 14.
The biting body 10 is composed of a plurality of metal plate pieces 10a having a substantially fan-shaped plane and a rubber plate 10b connecting the metal plate pieces 10a. In this example, a spacer 14 is interposed between the three biting bodies 10. The spacers 14 position the three bites 10 in the circumferential direction. Then, by screwing the pressing means 11 into the screw hole 20, each biting body 10 is pressed toward the center in the radial direction, and the metal plate piece 10 a is bitten on the outer periphery of the tube 1. At this time, the tip of each metal plate piece 10a is evenly fastened to the outer periphery of the tube 1 by the elastic action of the rubber plate 10b.

次に、図７は本発明の軸方向拘束手段22の他の例であり、この例が図１のそれと異なる点は、第１相フランジ５に隣接する第３相フランジ23の内周面に楔保持部24を斜めの傾斜面として設け、その傾斜面に整合する背を有する楔21を、そこに保持して、各相フランジ間６，５，23を締結することにより、その楔21を軸方向に押圧し、それを管１の外周面に咬着するものである。   Next, FIG. 7 shows another example of the axial direction restraining means 22 of the present invention. This example is different from that of FIG. 1 in that the inner peripheral surface of the third phase flange 23 adjacent to the first phase flange 5 is used. The wedge holding portion 24 is provided as an inclined inclined surface, and a wedge 21 having a back aligned with the inclined surface is held there, and the wedges 21 are fastened by fastening the interphase flanges 6, 5, 23. It is pressed in the axial direction and bites it on the outer peripheral surface of the tube 1.

次に、図８は本発明の軸方向拘束手段22の他の例であり、第１相フランジ５に楔保持部24を有し、その楔保持部24に楔21を保持するものである。それと供に、その楔21と小フランジ部２との間に環状体25を介装する。この環状体25は、肉厚のリングプレートからなり、その外直径が楔21の最大直径よりも大に形成されている。さらに、この環状体25に整合するように、第１相フランジ５に環状凹陥部26を設ける。この環状体25は、楔21の端面が小フランジ部２の端面を損傷しないよう両者間に介在させるものである。そして、第１相フランジ５と第２相フランジ６との間をボルト17およびナット18で締結することにより、管継手を締結固定するものである。このように構成することにより、継手の全体構造を単純化し、その締結が容易であると共に、締結を迅速に行えるものである。   Next, FIG. 8 shows another example of the axial direction restraining means 22 of the present invention, in which the first phase flange 5 has a wedge holding portion 24 and the wedge holding portion 24 holds the wedge 21. At the same time, an annular body 25 is interposed between the wedge 21 and the small flange portion 2. The annular body 25 is made of a thick ring plate and has an outer diameter larger than the maximum diameter of the wedge 21. Further, an annular recess 26 is provided in the first phase flange 5 so as to be aligned with the annular body 25. The annular body 25 is interposed between the end faces of the wedge 21 so that the end face of the wedge 21 is not damaged. And a pipe joint is fastened and fixed by fastening between the 1st phase flange 5 and the 2nd phase flange 6 with the volt | bolt 17 and the nut 18. FIG. By comprising in this way, the whole structure of a joint is simplified, the fastening is easy, and it can fasten rapidly.

なお、楔21は図９に示す如く、その正面図において円形の一部を欠切して半径方向に縮小できるように構成したものである。
本発明者の実験によれば、図８の構造により可撓性管継手と管１とを締結固定したとき、その締結状態は図７におけるそれと変わることがなかった。即ち、図７の実施例と図８の実施例は、その締結構造において同等である。 In addition, as shown in FIG. 9, the wedge 21 is configured so that it can be reduced in the radial direction by cutting out a part of a circle in the front view.
According to the experiment by the present inventor, when the flexible pipe joint and the pipe 1 are fastened and fixed by the structure of FIG. 8, the fastening state is not different from that in FIG. That is, the embodiment of FIG. 7 and the embodiment of FIG. 8 are equivalent in the fastening structure.

１ 管
２ 小フランジ部
３ 継手本体
４ ボルト孔
５ 第１相フランジ
６ 第２相フランジ
７ 剛性体
８ Ｌ字当接部
９ 第１凹部 DESCRIPTION OF SYMBOLS 1 Pipe 2 Small flange part 3 Joint main body 4 Bolt hole 5 1st phase flange 6 2nd phase flange 7 Rigid body 8 L-shaped contact part 9 1st recessed part

10 咬着体
10a 金属板片
10b ゴム板
11 押圧手段
12 第２凹陥部
13 内周面
14 スペーサ
15 タイヤコード
16 ワッシャ
17 ボルト 10 bite body
10a Metal plate
10b rubber plate
11 Pressing means
12 Second recess
13 Inner peripheral surface
14 Spacer
15 Tire cord
16 Washer
17 volts

18 ナット
19 変形部
20 ネジ孔
21 楔
22 軸方向拘束手段
23 第３相フランジ
24 楔保持部
25 環状体
26 環状凹陥部 18 nuts
19 Deformation part
20 Screw holes
21 wedges
22 Axial restraint
23 Third phase flange
24 Wedge holder
25 toroids
26 Annular recess

Claims (8)

フランジの存在しない管(1)の端部に接続される可撓性管継手において、
筒状に形成され、軸方向の端部の外周に小フランジ部(2)が一体に突設された可撓性の継手本体(3)と、
その小フランジ部(2)の軸方向の両平面を挟持すると共に、それぞれ外直径が前記小フランジ部(2)の外直径より大に形成され、その小フランジ部(2)の外周より外側位置で、周方向に離間して複数のボルト孔(4)を有する環状の第１相フランジ(5)と第２相フランジ(6)とを具備し、
前記継手本体(3)の小フランジ部(2)は、その半径方向の端部に環状の剛性体(7)が内装され、
前記第１相フランジ(5)は、その軸方向の端面には、前記小フランジ部(2)の軸方向端面およびその半径方向の外周端面の一部に断面Ｌ字状に当接するＬ字当接部(8)を有し、
第２相フランジ(6)は、その内周面が前記小フランジ部(2)の付根に被嵌され、その軸方向の端面で、前記小フランジ部(2)の前記剛性体(7)に整合する位置に、その剛性体(7)の半径方向の厚みより幅の広い環状の第２凹陥部(12)を有し、
第１相フランジ(5)と第２相フランジ(6)とにより継手本体(3)の小フランジ部(2)を挟持締結したとき、その第２相フランジ(6)の第２凹陥部(12)が前記剛性体(7)の外周近傍の前記可撓性の部材に食い込んで、その小フランジ部(2)を半径方向の中心側に変形し、継手本体(3)の内周面(13)が前記管(1)の外周面に圧接して、管(1)と継手本体(3)との接触部間が液密に形成されることを特徴とする可撓性管継手。 In the flexible pipe joint connected to the end of the pipe (1) without the flange,
A flexible joint body (3) formed in a cylindrical shape and integrally projecting a small flange portion (2) on the outer periphery of the axial end portion;
While sandwiching both axial planes of the small flange portion (2), the outer diameter is formed to be larger than the outer diameter of the small flange portion (2), and is positioned outside the outer periphery of the small flange portion (2). And an annular first phase flange (5) and a second phase flange (6) having a plurality of bolt holes (4) spaced apart in the circumferential direction,
The small flange portion (2) of the joint body (3) is internally provided with an annular rigid body (7) at its radial end.
The first phase flange (5) has an L-shaped contact on its axial end face that is in contact with the axial end face of the small flange portion (2) and a part of its radially outer peripheral end face in an L-shaped cross section. Has a contact (8),
The inner peripheral surface of the second phase flange (6) is fitted on the root of the small flange portion (2), and the axial end surface thereof is attached to the rigid body (7) of the small flange portion (2). In the aligned position, there is an annular second recess (12) wider than the radial thickness of the rigid body (7),
When the small flange portion (2) of the joint body (3) is clamped and fastened by the first phase flange (5) and the second phase flange (6), the second recessed portion (12 ) Bites into the flexible member near the outer periphery of the rigid body (7), deforms the small flange portion (2) to the center side in the radial direction, and the inner peripheral surface (13) of the joint body (3). ) Are in pressure contact with the outer peripheral surface of the pipe (1), so that a liquid-tight space is formed between the contact portions of the pipe (1) and the joint body (3). 請求項１に記載の可撓性管継手において、
前記環状の第２凹陥部(12)の半径方向の最大直径が、前記小フランジ部(2)の外周直径に整合し、第１相フランジ(5)のＬ字当接部(8)と第２相フランジ(6)とにより継手本体(3)の小フランジ部(2)を挟持締結したとき、第２凹陥部(12)が小フランジ部(2)の外周面を被嵌するように構成された可撓性管継手。 The flexible pipe joint according to claim 1, wherein
The maximum diameter in the radial direction of the annular second recessed portion (12) matches the outer diameter of the small flange portion (2), and the L-shaped contact portion (8) of the first phase flange (5) When the small flange part (2) of the joint body (3) is clamped and fastened with the two-phase flange (6), the second recessed part (12) is configured to fit the outer peripheral surface of the small flange part (2) Flexible pipe fittings. 請求項１または請求項２に記載の可撓性管継手において、
前記第１相フランジ(5)またはそれに隣接する第３相フランジ(23)に、管(1)の外周面に咬着して、第１相フランジ(5)が軸方向に移動しないようにした軸方向拘束手段(22)を設けた可撓性管継手。 In the flexible pipe joint according to claim 1 or 2,
The first phase flange (5) or the third phase flange (23) adjacent thereto is engaged with the outer peripheral surface of the pipe (1) so that the first phase flange (5) does not move in the axial direction. A flexible pipe joint provided with axial restraint means (22). 請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)の内周面に第１凹部(9)を有し、その第１凹部(9)に咬着体(10)を半径方向に移動自在に内装し且つ、その咬着体(10)を半径方向の中心側に押圧する押圧手段(11)を有する可撓性管継手。 The flexible pipe joint according to claim 3,
The axial direction restraining means (22) has a first recess (9) on the inner peripheral surface of the first phase flange (5), and the biting body (10) is radially arranged in the first recess (9). A flexible pipe joint that is movably mounted and has pressing means (11) that presses the biting body (10) toward the center in the radial direction. 請求項４に記載の可撓性管継手において、
その第１凹部(9)が、前記第１相フランジ(5)の内周面に環状に形成され、
その第１凹部(9)に、互いに周方向に離間して配置される複数の前記咬着体(10)および、各前記咬着体(10)間に介装されるスペーサ(14)と、を具備し、
前記咬着体(10)は、平面が略扇型の複数枚の金属板片(10a) がゴム板(10b)を介して積層され、
その前記咬着体(10)が、第１相フランジ(5)に螺着された前記押圧手段(11)であるボルトにより、管(1)の外周に接離自在に押圧される可撓性管継手。 The flexible pipe joint according to claim 4,
The first recess (9) is annularly formed on the inner peripheral surface of the first phase flange (5),
In the first recess (9), a plurality of the biting bodies (10) that are spaced apart from each other in the circumferential direction, and a spacer (14) interposed between the biting bodies (10), Comprising
The biting body (10) is a laminate of a plurality of metal plate pieces (10a) having a substantially fan-shaped plane through a rubber plate (10b),
Flexibility that the biting body (10) is detachably pressed against the outer periphery of the pipe (1) by a bolt as the pressing means (11) screwed to the first phase flange (5) Pipe fittings. 請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)に隣接する第３相フランジ(23)の内周面に楔保持部(24)を設け、そこに楔(21)を保持して、各相フランジ間(6)(5)(23)を締結することにより、その楔(21)を管(1)の外周面に咬着する可撓性管継手。 The flexible pipe joint according to claim 3,
The axial restraining means (22) is provided with a wedge holding portion (24) on the inner peripheral surface of the third phase flange (23) adjacent to the first phase flange (5), and holds the wedge (21) there. A flexible pipe joint for fastening the wedge (21) to the outer peripheral surface of the pipe (1) by fastening the interphase flanges (6), (5) and (23). 請求項３に記載の可撓性管継手において、
前記軸方向拘束手段(22)が、第１相フランジ(5)の内周面に楔保持部(24)を設け、そこに楔(21)を保持して、両相フランジ(6)(5)間を締結することにより、その楔(21)を管(1)の外周面に咬着する可撓性管継手。 The flexible pipe joint according to claim 3,
The axial direction restraining means (22) is provided with a wedge holding portion (24) on the inner peripheral surface of the first phase flange (5), holds the wedge (21) therein, and the both phase flanges (6) (5 ), The flexible pipe joint that bites the wedge (21) to the outer peripheral surface of the pipe (1). 請求項７に記載の可撓性管継手において、
楔(21)の端面と小フランジ部(2)の端面との間に、その楔(21)の最大径より大なる径の剛性の環状体(25)が介装され、その環状体(25)に整合する環状凹陥部(26)が第１相フランジ(5)の端面に形成された可撓性管継手。
The flexible pipe joint according to claim 7,
A rigid annular body (25) having a diameter larger than the maximum diameter of the wedge (21) is interposed between the end face of the wedge (21) and the end face of the small flange portion (2), and the annular body (25 ) A flexible pipe joint in which an annular recess (26) matching with the first phase flange (5) is formed.
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CN104565621A (en) * 2014-12-22 2015-04-29 洛阳能源密封件有限公司 Vibration-resistant flange connecting sealing structure

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JPS4985620U (en) * 1972-11-13 1974-07-24
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JPS6120986U (en) * 1984-07-12 1986-02-06 東洋ゴム工業株式会社 Structure of pipe fitting
JPH0529597Y2 (en) * 1988-04-05 1993-07-28
JPH04203582A (en) * 1990-11-29 1992-07-24 Bridgestone Corp Connecting fixture for pipe coupling
JP4211877B2 (en) * 1998-05-13 2009-01-21 コスモ工機株式会社 Pipe fitting
JP2001336542A (en) * 2000-05-31 2001-12-07 Musashi Seimitsu Ind Co Ltd Rod connection structure and caulking device therefor
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JP5046085B2 (en) * 2006-08-31 2012-10-10 日立オートモティブシステムズ株式会社 Method for manufacturing joining rod and cylinder device

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