JPH04285384A - Mechanical joint - Google Patents
Mechanical jointInfo
- Publication number
- JPH04285384A JPH04285384A JP3049773A JP4977391A JPH04285384A JP H04285384 A JPH04285384 A JP H04285384A JP 3049773 A JP3049773 A JP 3049773A JP 4977391 A JP4977391 A JP 4977391A JP H04285384 A JPH04285384 A JP H04285384A
- Authority
- JP
- Japan
- Prior art keywords
- elastic packing
- joint
- ring
- press
- joint pipe
- 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.)
- Granted
Links
- 238000012856 packing Methods 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Joints With Pressure Members (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ステンレス鋼のような
接合管を用いて一般の給水配管、温水配管や、特に空調
システムの冷温水配管を施工するような場合に使用され
るメカニカル継手に関するもので、詳しくは、そのシー
ル構造に関するものである。[Industrial Application Field] The present invention relates to a mechanical joint used when constructing general water supply piping, hot water piping, and especially cold and hot water piping for air conditioning systems using jointed pipes such as stainless steel. More specifically, it relates to its seal structure.
【０００２】0002
【従来の技術】図３は、従来一般のこの種のメカニカル
継手の構造を示すものであり、同図において、１は筒状
の継手本体で、ステンレス鋼管のような接合管２が挿入
される端部には、その外周面に雄ねじ部３が形成された
環状のハウジング部４が連設されているとともに、その
内周には、端部側ほど大径となるように軸線方向に傾斜
したパッキン押圧用の傾斜面５が形成されている。６は
上記ハウジング部４に対応して上記接合管２に外装され
て上記継手本体１との間をシールするための環状の弾性
パッキンである。７は上記接合管２に外嵌された押輪で
あり、その大径部７ａの内面には、上記雄ねじ部３に螺
合する雌ねじ部８が形成されている。９は上記接合管２
に外嵌されて上記両ねじ部３，８の螺合により押輪７を
締付け操作した際、上記弾性パッキン６をハウジング部
４の内側に圧入させて上記の傾斜面５に押し付ける環状
のリテーナ、１０は接合管２に外装された抜け止めリン
グであり、上記押輪７の締付け時に該押輪７における小
径部７ｂ側の内周面に形成の傾斜面１１によって接合管
２に予め施されている溝１２に押し込められるようにな
っている。[Prior Art] Fig. 3 shows the structure of a conventional mechanical joint of this kind. In the figure, 1 is a cylindrical joint body into which a joint pipe 2 such as a stainless steel pipe is inserted. An annular housing part 4 having a male threaded part 3 formed on its outer circumferential surface is connected to the end part, and an annular housing part 4 is provided on the inner periphery thereof and is inclined in the axial direction so that the diameter becomes larger toward the end part. An inclined surface 5 for pressing the packing is formed. Reference numeral 6 denotes an annular elastic packing which is externally mounted on the joint pipe 2 in correspondence with the housing portion 4 and seals between the joint body 1 and the joint body 1. Reference numeral 7 denotes a push ring fitted onto the outside of the joint pipe 2, and a female threaded portion 8 screwed into the male threaded portion 3 is formed on the inner surface of the large diameter portion 7a. 9 is the above joint pipe 2
an annular retainer 10 which press-fits the elastic packing 6 into the inside of the housing part 4 and presses it against the inclined surface 5 when the press ring 7 is tightened by screwing the threaded parts 3 and 8; is a retaining ring externally mounted on the joint pipe 2, and when the push ring 7 is tightened, a groove 12 is formed in the joint pipe 2 in advance by an inclined surface 11 formed on the inner circumferential surface of the push ring 7 on the side of the small diameter portion 7b. It is designed to be pushed into the
【０００３】上記構成のものにおいて、押輪７側の雌ね
じ部８を継手本体１側の雄ねじ部３に螺合して締付け操
作すると、弾性パッキン６がリテーナ９によって軸方向
へ押し移動されて継手本体１のハウジング部４の内側へ
圧入される。このため、弾性パッキン６は傾斜面５に押
圧され、上記接合管２の外周面２Ａに密着するので、該
接合管２の外周面２Ａと継手本体１の内周面との間がシ
ールされる。In the above configuration, when the female threaded portion 8 on the side of the press ring 7 is screwed into the male threaded portion 3 on the side of the joint body 1 and tightened, the elastic packing 6 is pushed and moved in the axial direction by the retainer 9, and the elastic packing 6 is pushed and moved in the axial direction by the retainer 9. It is press-fitted into the inside of the housing part 4 of No. 1. Therefore, the elastic packing 6 is pressed against the inclined surface 5 and comes into close contact with the outer peripheral surface 2A of the joint pipe 2, so that a seal is created between the outer peripheral surface 2A of the joint pipe 2 and the inner peripheral surface of the joint body 1. .
【０００４】また、上記押輪７の締付けによって抜け止
めリング１０が上記押輪７の小径部７ｂ側の傾斜面１１
により接合管２側の溝１２に押し込められ、接合管２の
引き抜けが阻止される。[0004] Further, by tightening the press ring 7, the retaining ring 10 is attached to the inclined surface 11 on the small diameter portion 7b side of the press ring 7.
As a result, the joint tube 2 is pushed into the groove 12 on the side of the joint tube 2, and the joint tube 2 is prevented from being pulled out.
【０００５】[0005]
【発明が解決しようとする課題】上記したような構成の
従来のメカニカル継手は、継手本体１のハウジング部４
の内面に形成した傾斜面５に弾性パッキン６を押し付け
る構成であるために、押輪７の締付トルクと弾性パッキ
ン６の面圧との関係が図４のように比例関係となり、押
輪７による締付量が増すにつれて操作がしにくくなり、
さらに押輪７の進み量が大きくなると、図５のように弾
性パッキン６の面圧が急激に大きくなり、一定の面圧を
保つ位置にセットしにくいという難点がある。[Problems to be Solved by the Invention] In the conventional mechanical joint configured as described above, the housing portion 4 of the joint body 1
Since the elastic packing 6 is pressed against the inclined surface 5 formed on the inner surface of the press ring 7, the relationship between the tightening torque of the push ring 7 and the surface pressure of the elastic packing 6 is proportional as shown in FIG. As the amount increases, it becomes difficult to operate,
Further, as the amount of advance of the push ring 7 increases, the surface pressure on the elastic packing 6 increases rapidly as shown in FIG. 5, and there is a problem in that it is difficult to set the elastic packing 6 at a position where a constant surface pressure is maintained.
【０００６】とくに、上記傾斜面５によって弾性パッキ
ン６を変形させるので、弾性パッキン６の拘束面（接触
面）６ａが自由面（比接触面）６ｂに比して大きくなる
ので、シール性が流体の温度変化の影響を受けやすい傾
向にある。すなわち、弾性パッキン６の線膨脹係数は１
．５×１０−４／℃と金属の線膨脹係数１．２〜１．８
×１０−５／℃に比べて大きいことから、上記拘束面６
ａが大きいと、流体温度の高い状態で体積膨脹が自由面
に限定されることから、面圧が著しく上昇して弾性パッ
キン６の劣化が進み易くなり、逆に流体温度が低くなる
と、面圧が著しく小さくなってシール性の低下を来すこ
とになる。たとえば常温組付け時での弾性パッキン６の
面圧が６０ｋｇｆ／ｃｍ２ の場合、流体温度が８５℃
では面圧が１２０ｋｇｆ／ｃｍ２ と大きくなり、流体
温度が５℃では面圧が８ｋｇｆ／ｃｍ２ と著しく小さ
くなる。したがって、水圧１０ｋｇｆ／ｃｍ２ 下で使
用する場合、低温時に漏れが生じるおそれがある。In particular, since the elastic packing 6 is deformed by the inclined surface 5, the constraint surface (contact surface) 6a of the elastic packing 6 becomes larger than the free surface (specific contact surface) 6b, so that the sealing performance is improved by the fluid. tends to be easily affected by temperature changes. That is, the linear expansion coefficient of the elastic packing 6 is 1
．． 5×10-4/°C and linear expansion coefficient of metal 1.2-1.8
×10-5/℃, the above-mentioned restraining surface 6
If a is large, the volume expansion will be limited to the free surface when the fluid temperature is high, so the surface pressure will increase significantly and deterioration of the elastic packing 6 will progress more easily.On the contrary, when the fluid temperature is low, the surface pressure will increase. becomes significantly smaller, resulting in a decrease in sealing performance. For example, if the surface pressure of the elastic packing 6 is 60 kgf/cm2 when assembled at room temperature, the fluid temperature is 85°C.
In this case, the surface pressure becomes as large as 120 kgf/cm2, and when the fluid temperature is 5°C, the surface pressure becomes extremely small as 8 kgf/cm2. Therefore, when used under a water pressure of 10 kgf/cm2, there is a risk of leakage occurring at low temperatures.
【０００７】本発明は上記のような問題点を解消するた
めになされたもので、押輪の締付け操作を容易にして一
定の面圧を確保でき、しかも流体の温度変化に関係なく
、適正なシール性を維持させることができるメカニカル
継手を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and is capable of facilitating the tightening operation of the push ring to ensure a constant surface pressure, and also to ensure proper sealing regardless of fluid temperature changes. The purpose of this invention is to provide a mechanical joint that can maintain its properties.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
、本発明に係るメカニカル継手は、接合管が挿入される
端部にねじ部を有する環状ハウジング部が連設された筒
状の継手本体と、上記接合管に嵌合されて上記ねじ部に
螺合するねじ部が形成された押輪と、上記筒状継手本体
のハウジング部に対応して上記接合管に外装された環状
の弾性パッキンと、上記両ねじ部の螺合による押輪の締
付けにより上記弾性パッキンを上記ハウジング部の内側
へ圧入させる環状のリテーナとを備えたメカニカル継手
において、上記筒状継手本体のハウジング部の内周面に
上記接合管の外周面に平行な弾性パッキン用押圧面を形
成して、上記押輪の締付けにともない弾性パッキンを径
方向に圧縮させて互いに平行な面に押圧させるように構
成したものである。[Means for Solving the Problems] In order to achieve the above object, a mechanical joint according to the present invention has a cylindrical joint body connected with an annular housing portion having a threaded portion at the end into which a joint pipe is inserted. a press ring that is fitted into the joint pipe and is formed with a threaded portion that is screwed into the threaded portion; and an annular elastic packing that is sheathed on the joint pipe in correspondence with the housing portion of the cylindrical joint main body. , a mechanical joint comprising an annular retainer for press-fitting the elastic packing into the inside of the housing part by tightening a press ring by screwing together the two threaded parts; A pressing surface for the elastic packing is formed parallel to the outer peripheral surface of the joint pipe, and as the press ring is tightened, the elastic packing is compressed in the radial direction and pressed against the mutually parallel surfaces.
【０００９】[0009]
【作用】本発明によれば、押輪の締付け時に継手本体の
ハウジング部の内側に圧入される弾性パッキンが継手本
体のハウジング部の内周面に形成された押圧面により押
圧されて、その径方向（厚さ方向）へ変形するのみであ
るから、一定の締付トルクで容易に締付け作業を行なえ
るうえ、押圧面と接合管の外周面との間隔で弾性パッキ
ンに対する圧縮率が決まり、一定の面圧が得られやすく
なり、さらに、弾性パッキンの自由面が大きくとれるの
で、流体の温度変化があっても、弾性パッキンの局部的
な面圧変化を小さくすることができる。[Operation] According to the present invention, when the press ring is tightened, the elastic packing that is press-fitted into the inside of the housing portion of the joint body is pressed by the pressing surface formed on the inner peripheral surface of the housing portion of the joint body, and the elastic packing is pressed in the radial direction. Since the deformation only occurs in the (thickness direction), it is easy to tighten with a constant tightening torque, and the compression ratio for the elastic packing is determined by the distance between the pressing surface and the outer circumferential surface of the joint pipe. It becomes easier to obtain a surface pressure, and since the free surface of the elastic packing can be increased, even if there is a temperature change in the fluid, local changes in the surface pressure of the elastic packing can be reduced.
【００１０】0010
【実施例】以下、本発明の一実施例を図面にもとづいて
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明の一実施例によるメカニカル
継手を示す半截断面図であり、同図において、図３に示
す従来例と同一部所には、同一の符号を付して、それら
の説明を省略する。FIG. 1 is a half-cut sectional view showing a mechanical joint according to an embodiment of the present invention, and in the same figure, the same parts as in the conventional example shown in FIG. The explanation will be omitted.
【００１２】図１において、継手本体１の内周面には、
上記接合管２の外周面２Ａに平行な上記弾性パッキン用
の押圧面２１が形成されており、また、押輪７の締付け
完了時にリテーナ９が継手本体１の端面１ａと押輪７の
開口端面７Ｃに当接するように設定されている。２２は
上記継手本体１の開口端部内縁に形成された弾性パッキ
ン案内用のテーパ面であり、これに対応して弾性パッキ
ン６の一端外縁にもテーパ面２３（図２）が形成されて
いる。２４は上記抜け止めリング１０に対応して押輪７
の内周面に、接合管２の外周面２Ａに沿うように形成さ
れた平行面であり、図２に示すように、この平行面２４
の軸方向の長さＬは、押輪７の締付け時に抜け止めリン
グ１０がナット７の傾斜面１１に押圧されないように締
付け長ｌよりも大に設定されている。In FIG. 1, the inner circumferential surface of the joint body 1 includes:
A pressing surface 21 for the elastic packing is formed parallel to the outer peripheral surface 2A of the joint pipe 2, and when the push ring 7 is tightened, the retainer 9 is pressed against the end surface 1a of the joint body 1 and the open end surface 7C of the push ring 7. are set to touch each other. 22 is a tapered surface for guiding the elastic packing formed on the inner edge of the opening end of the joint body 1, and correspondingly, a tapered surface 23 (FIG. 2) is also formed on the outer edge of one end of the elastic packing 6. . 24 is a push ring 7 corresponding to the above-mentioned retaining ring 10.
is a parallel surface formed along the outer peripheral surface 2A of the joint pipe 2, and as shown in FIG. 2, this parallel surface 24
The axial length L is set larger than the tightening length l so that the retaining ring 10 is not pressed against the inclined surface 11 of the nut 7 when the press ring 7 is tightened.
【００１３】つぎに、上記構成の動作について説明する
。継手本体１の雄ねじ部３に押輪７の雌ねじ部８を螺合
して押輪７を締付け操作すると、リテーナ９により弾性
パッキン６が継手本体１側のハウジング部４内に圧入さ
れる。この時、ハウジング部４の開口端部内縁のテーパ
面２２で弾性パッキン６の一端のテーパ面２３をガイド
するので、圧入はスムーズになされる。このテーパ面２
２の傾斜角度は３０°程度が好ましい。また、この実施
例では、上記押輪７の締付け完了と同時に、リテーナ９
が継手本体１の開口端面１ａに当るので、締付トルクが
急上昇し、押輪７の前進が阻止されるので、配管作業者
は容易に締付け完了を把握することができる。Next, the operation of the above configuration will be explained. When the female threaded portion 8 of the push ring 7 is screwed into the male threaded portion 3 of the joint body 1 and the push ring 7 is tightened, the elastic packing 6 is press-fitted into the housing portion 4 on the side of the joint body 1 by the retainer 9. At this time, the tapered surface 22 on the inner edge of the opening end of the housing part 4 guides the tapered surface 23 on one end of the elastic packing 6, so that the press-fit is performed smoothly. This tapered surface 2
The inclination angle of No. 2 is preferably about 30°. Further, in this embodiment, at the same time as the tightening of the push ring 7 is completed, the retainer 9
Since this hits the opening end surface 1a of the joint body 1, the tightening torque increases rapidly and the forward movement of the press ring 7 is blocked, so that the piping worker can easily know when the tightening is complete.
【００１４】上記弾性パッキン６がハウジング部４内に
圧入されると、この弾性パッキン６は継手本体１の内周
面に形成された押圧面２１により、径方向から押圧され
て弾性変形して接合管２の外周面２Ａに密着されること
になり、継手本体１の内周面と接合管２の外周面２Ａと
の間が液密にシールされることになる。このように弾性
パッキン６が径方向のみに弾性変形するだけであるから
、押輪７による締付け時には、一定のトルクで締付け操
作をやり易くなる。さらに、上記弾性パッキン６がハウ
ジング部４の内側に圧入される際の圧縮率は、図２に示
す弾性パッキン６の径方向の厚さ寸法Ｈと、押圧面２１
と接合管２の外周面２Ａとの間隔Ｗとで決まり、押輪７
の締付量に関係なく、一定の面圧を得ることができる。When the elastic packing 6 is press-fitted into the housing portion 4, the elastic packing 6 is pressed from the radial direction by the pressing surface 21 formed on the inner circumferential surface of the joint body 1, and is elastically deformed to join. It will come into close contact with the outer circumferential surface 2A of the pipe 2, and a liquid-tight seal will be established between the inner circumferential surface of the joint body 1 and the outer circumferential surface 2A of the joint tube 2. Since the elastic packing 6 only elastically deforms in the radial direction in this way, when tightening with the press ring 7, the tightening operation can be easily performed with a constant torque. Furthermore, the compression rate when the elastic packing 6 is press-fitted inside the housing portion 4 is determined by the radial thickness dimension H of the elastic packing 6 shown in FIG. 2 and the pressing surface 21.
It is determined by the distance W between the outer peripheral surface 2A of the joint pipe 2, and the push ring 7
A constant surface pressure can be obtained regardless of the amount of tightening.
【００１５】とくに、上記押圧面２１は接合管２の外周
面２Ａに平行であるので、弾性パッキン６の自由面（非
接触面）６ｂが大きくなる。このため、流体の温度変化
にともなう弾性パッキン６の膨脹および収縮がハウジン
グ部４の内側の空間で許容され、シール面での面圧変化
が小さくなる。たとえば、常温組付時の面圧が２５ｋｇ
ｆ／ｃｍ２ の場合、流体温度８５℃では、面圧が３０
ｋｇｆ／ｃｍ２ となり、また流体温度が５℃では１５
ｋｇｆ／ｃｍ２ となり、低温時でもシール性が十分に
確保されることが判った。In particular, since the pressing surface 21 is parallel to the outer peripheral surface 2A of the joint tube 2, the free surface (non-contact surface) 6b of the elastic packing 6 becomes large. Therefore, expansion and contraction of the elastic packing 6 due to changes in the temperature of the fluid is allowed in the inner space of the housing portion 4, and changes in surface pressure on the sealing surface are reduced. For example, the surface pressure when assembled at room temperature is 25 kg.
f/cm2, at a fluid temperature of 85°C, the surface pressure is 30
kgf/cm2, and when the fluid temperature is 5℃, it is 15
kgf/cm2, and it was found that sufficient sealing performance was ensured even at low temperatures.
【００１６】ところで、上記押輪７の内面には、その軸
芯方向に沿って適当な長さの平行面２４が形成されてい
る。この平行面２４は、継手本体１の両側から差し込ま
れた接合管２の端部同志が突き当たってしまったような
場合において、抜け止めリング１０を傾斜面１１により
接合管２の外周面２Ａに喰い込まないようにして、接合
管２を軸芯方向に移動可能とするためのものであり、こ
の平行面２４の存在により継手本体１と接合管２との初
期の組付け設定を容易にすることができる。By the way, a parallel surface 24 of an appropriate length is formed on the inner surface of the press ring 7 along its axial direction. This parallel surface 24 allows the retaining ring 10 to be attached to the outer circumferential surface 2A of the joint tube 2 by the inclined surface 11 in the case where the ends of the joint tubes 2 inserted from both sides of the joint body 1 butt each other. This is to enable the joint pipe 2 to move in the axial direction without being jammed, and the existence of this parallel surface 24 facilitates the initial assembly setting of the joint body 1 and the joint pipe 2. Can be done.
【００１７】なお、上記弾性パッキン６の他端外縁にも
、図２のようにテーパ面２３と同様にテーパ面２５を形
成しておくと、弾性パッキン６の装着時の方向性が規制
されず、組付け作業性が一層改善される。Note that if a tapered surface 25 is formed on the outer edge of the other end of the elastic packing 6 in the same way as the tapered surface 23 as shown in FIG. , the assembly workability is further improved.
【００１８】[0018]
【発明の効果】以上のように、本発明によれば、継手本
体側のハウジング部の内周面に、接合管の外周面に平行
な弾性パッキン用の押圧面を形成したので、押輪の締付
け操作を一定の締付トルクで容易に行なうことができる
とともに、締付量に関係なく一定の面圧を得ることがで
き、締付け作業性の向上を図り得る。とくに弾性パッキ
ンの自由面が大となって、配管環境や流体の温度変化に
よるシール面の面圧変化が小さくなり、良好なシール性
を保持させることができる。As described above, according to the present invention, a pressing surface for the elastic packing parallel to the outer peripheral surface of the joint pipe is formed on the inner peripheral surface of the housing portion on the side of the joint body, so that the pressing ring can be tightened. The operation can be easily performed with a constant tightening torque, and a constant surface pressure can be obtained regardless of the tightening amount, so that the tightening workability can be improved. In particular, the free surface of the elastic packing becomes large, and changes in surface pressure on the sealing surface due to changes in the piping environment or fluid temperature are reduced, making it possible to maintain good sealing performance.
【図１】本発明の一実施例によるメカニカル継手を示す
半截断面図である。FIG. 1 is a half-cut sectional view showing a mechanical joint according to an embodiment of the present invention.
【図２】メカニカル継手の要部の寸法関係を示す図であ
る。FIG. 2 is a diagram showing the dimensional relationship of main parts of a mechanical joint.
【図３】従来のメカニカル継手を示す半截断面図である
。FIG. 3 is a half-cut sectional view showing a conventional mechanical joint.
【図４】弾性パッキンの締付トルクと面圧との関係を示
す図である。FIG. 4 is a diagram showing the relationship between the tightening torque and surface pressure of the elastic packing.
【図５】押輪の進み量と面圧との関係を示す図である。FIG. 5 is a diagram showing the relationship between the advance amount of the press ring and the surface pressure.
１ 継手本体 ２ 接合管 ３ 雄ねじ部 ４ ハウジング部 ６ 弾性パッキン ７ 押輪 ８ 雌ねじ部 ９ リテーナ ２１ 押圧面 1 Joint body 2 Joint pipe 3 Male thread part 4 Housing part 6 Elastic packing 7 Push ring 8 Female thread part 9 Retainer 21 Pressure surface
Claims (1)
する環状ハウジング部が連設された筒状の継手本体と、
上記接合管に嵌合されて上記ねじ部に螺合するねじ部が
形成された押輪と、上記筒状継手本体のハウジング部に
対応して上記接合管に外装された環状の弾性パッキンと
、上記両ねじ部の螺合による押輪の締付けにより上記弾
性パッキンを上記ハウジング部の内側へ圧入させる環状
のリテーナとを備えたメカニカル継手において、上記筒
状継手本体のハウジング部の内周面に上記接合管の外周
面に平行な弾性パッキン用押圧面を形成して、上記押輪
の締付けにともない弾性パッキンを径方向に圧縮させて
互いに平行な面に押圧させるように構成したことを特徴
とするメカニカル継手。Claims: 1. A cylindrical joint body connected with an annular housing part having a threaded part at the end into which the joint pipe is inserted;
a push ring that is fitted into the joint pipe and is formed with a threaded portion that is screwed into the threaded portion; an annular elastic packing that is sheathed on the joint pipe in correspondence with the housing portion of the cylindrical joint body; A mechanical joint comprising an annular retainer for press-fitting the elastic packing into the housing part by tightening a press ring by screwing both threaded parts together, and the joint pipe is attached to the inner circumferential surface of the housing part of the cylindrical joint main body. A mechanical joint characterized in that a pressing surface for the elastic packing is formed parallel to the outer peripheral surface of the press ring, and as the press ring is tightened, the elastic packing is compressed in the radial direction and pressed against the surfaces parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04977391A JP3213755B2 (en) | 1991-03-14 | 1991-03-14 | Mechanical coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04977391A JP3213755B2 (en) | 1991-03-14 | 1991-03-14 | Mechanical coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04285384A true JPH04285384A (en) | 1992-10-09 |
| JP3213755B2 JP3213755B2 (en) | 2001-10-02 |
Family
ID=12840492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04977391A Expired - Fee Related JP3213755B2 (en) | 1991-03-14 | 1991-03-14 | Mechanical coupling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3213755B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8056693B2 (en) | 2000-08-03 | 2011-11-15 | Christini Technologies, Inc. | Two-wheel drive two-wheeled vehicle |
-
1991
- 1991-03-14 JP JP04977391A patent/JP3213755B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3213755B2 (en) | 2001-10-02 |
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