WO2014079230A1 - 一种管接件密封结构及管接件 - Google Patents

一种管接件密封结构及管接件 Download PDF

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Publication number
WO2014079230A1
WO2014079230A1 PCT/CN2013/080478 CN2013080478W WO2014079230A1 WO 2014079230 A1 WO2014079230 A1 WO 2014079230A1 CN 2013080478 W CN2013080478 W CN 2013080478W WO 2014079230 A1 WO2014079230 A1 WO 2014079230A1
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WO
WIPO (PCT)
Prior art keywords
sealing
pipe joint
ring
pipe
jaw
Prior art date
Application number
PCT/CN2013/080478
Other languages
English (en)
French (fr)
Inventor
朱利波
林建江
Original Assignee
宁波三灵电子有限公司
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Filing date
Publication date
Application filed by 宁波三灵电子有限公司 filed Critical 宁波三灵电子有限公司
Publication of WO2014079230A1 publication Critical patent/WO2014079230A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/061—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping

Definitions

  • the invention relates to the technical field of pipe joints, in particular to a pipe joint sealing structure, and to a pipe joint having the above-mentioned pipe joint sealing structure.
  • EMT electric-metallic tubing
  • Figure 1 is a schematic view of a typical pipe joint.
  • the pipe joint generally comprises a coupling body 1, a nut 2, a sealing jaw 4, a supporting jaw 5, and a magazine 6'; a sealing jaw 4, a supporting jaw 5, a magazine 6, and a sleeve for EMT (this The outer part of the application is referred to as the pipe member 3, and the outer side of the pipe member 3 is fitted into the inner hole of the coupling body 1.
  • the coupling body 1 has at least one end of a threaded connection end, and the end has an external thread for use with the nut 2, Cooperating, the nut 2 has an internal thread; one end of the nut 2 is connected with the threaded end of the coupling body ,, and the other end forms a clamping end for clamping the magazine 6, and the screw
  • the cap 2 When the cap 2, the nut 2 is pressed against the magazine 6, and the tube 3% is pressed, the tube 3 is fixedly connected to the coupling body 1.
  • the sealing jaw 4 is used to prevent external water from entering the tubular member 3 at the joint of the nut 2, the pipe member 3, and the coupling body 1, and the threaded connection of one end of the sealing jaw 4 against the coupling body 1,
  • the end port, the end surface of the other end abuts against the end surface of the support cymbal 5, and the other end of the support cymbal 5 is pressed against the magazine 6.
  • the sealing ⁇ 4, one end of the supporting ⁇ 5, is a plane, and the corresponding end of the supporting ⁇ 5 is also a flat surface, that is, the abutting faces of the two are flat.
  • the sealing structure of the sealing jaw 4 and the supporting jaw 5 has the following problem: when the sealing jaw 4 is mounted and the crucible 5 is supported, since the sealing crucible 4 is in planar contact with the supporting crucible 5, the sealing crucible 4 , along the pipe member 3, the radial direction is prone to misalignment or sway, and because of the sealing ⁇ 4, usually a flexible member, easy to get stuck In the gap between the magazine 6 and the coupling body 1, the sealing member cannot be closely attached to the threaded connection port of the supporting jaw 5, and the coupling body 1, so that the sealing fails and the waterproof effect cannot be achieved; Moreover, during the use of the pipe joint, due to the planar contact between the seal ⁇ 4 and the support ⁇ 5, there is still a certain gap between the two, and the sealing effect is poor.
  • a first object of the present invention is to provide a pipe joint sealing structure which can prevent the sealing jaw from being displaced and improve the sealing effect of the pipe joint.
  • a second object of the present invention is to provide a pipe joint having the above-described pipe joint sealing structure.
  • the present invention provides a pipe joint sealing structure for sealing a pipe joint, a joint between the joint body and the nut, and a sealing raft, a support raft, which is sleeved on the outside of the pipe member, a magazine, an outer end of the magazine and an outer end of the sealing jaw respectively abut against a threaded port of the coupling body or a clamping end of the nut; one end of the supporting jaw presses the magazine
  • the inner end of the support weir forms a right angle interface with the inner end of the sealing jaw.
  • the inner end of the sealing jaw has a right-angled groove
  • the corresponding end of the supporting jaw has a right-angled protrusion
  • the right-angled groove forms a right-angle interface with the right-angled protrusion
  • the front end surface of the right angle groove is a slope surface
  • the rear end surface of the right angle protrusion is in contact with the slope surface
  • the inner end of the sealing jaw has a right-angled protrusion
  • the corresponding end of the supporting jaw has a right-angled groove
  • the right-angled groove forms a right-angle interface with the right-angled protrusion
  • one end of the supporting raft is a sloped surface, and the inclined surface presses the inner end of the magazine.
  • the outer end of the magazine and the end surface of the outer end of the sealing jaw are respectively engaged with the threaded port of the coupling body or the end surface of the clamping end of the nut.
  • the pipe joint sealing structure provided by the present invention comprises a sealing jaw, a supporting jaw and a magazine which are sleeved on the outer side of the pipe member, and the outer end of the magazine and the outer end of the sealing jaw respectively abut the thread of the coupling body a clamping end of the port or the nut; one end of the supporting jaw is pressed against the inside of the magazine The other end of the supporting jaw forms a right angle interface with the inner end of the sealing jaw.
  • the pipe joint sealing structure of the structure, the contact surface of the sealing jaw and the supporting jaw abuts against the contact by a right angle interface, and when the sealing jaw and the supporting jaw are installed, the sealing jaw is tightly engaged with the supporting jaw,
  • the right angle interface fastening structure limits the sealing jaw in the radial direction of the pipe member, which prevents the sealing jaw from being misaligned or tilted in the radial direction of the pipe member, thereby preventing the sealing jaw from being caught in the gap between the magazine and the coupling body.
  • the sealing member can closely fit the end surface of the supporting raft, the outer wall of the pipe member and the threaded end of the coupling body to ensure the sealing effect of the seal; moreover, the contact gap between the sealing raft and the supporting raft is L-shaped, changing the external moisture entering The path of the time increases the difficulty of external moisture entering and improves the sealing effect.
  • the present invention also provides a pipe joint comprising a coupling body, both ends of the coupling body having a threaded connection end, and at least one threaded connection end of the coupling body is connected
  • a pipe joint comprising a coupling body, both ends of the coupling body having a threaded connection end, and at least one threaded connection end of the coupling body is connected
  • nuts are nuts, pipe fittings and the above-mentioned pipe joint sealing structure. Since the above-mentioned pipe joint sealing structure has the above technical effects, the pipe joint having the above-mentioned pipe joint sealing structure should also have corresponding technical effects.
  • the threaded connection ends of the two ends of the coupling body are connected with a sealing structure of a nut, a pipe member and the pipe joint described above.
  • the threaded end of one end of the coupling body is connected with a sealing structure of a nut, a pipe member and the above-mentioned pipe joint, and the screw connection end of the other end is connected with a lock nut and a stop weir.
  • Figure 1 is a schematic view showing the structure of a typical pipe joint
  • FIG. 2 is a schematic structural view of a pipe joint sealing structure according to a first embodiment of the present invention
  • FIG. 3 is a schematic exploded view of the pipe joint sealing structure of FIG.
  • FIG. 4 is a partially enlarged schematic view showing the sealing member, the magazine and the supporting jaw of Figure 2;
  • Figure 5 is a partially enlarged structural view of the sealing member of Figure 4 in cooperation with the supporting jaw;
  • Figure 6 is a second embodiment of the present invention
  • FIG. 7 is a partial enlarged structural view of the sealing member, the magazine and the supporting jaw of FIG. 6;
  • FIG. 8 is a partial enlarged view of the sealing member and the supporting jaw of FIG.
  • FIG. 9 is a schematic structural view of a pipe joint according to an embodiment of the present invention;
  • Figure 10 is a schematic exploded view of the pipe joint of Figure 9;
  • FIG. 11 is a schematic structural view of a pipe joint according to another embodiment of the present invention.
  • a first nut 12 a first tube member 13, a first sealing jaw 14, a first supporting jaw 15, a first magazine 16;
  • the second nut 22, the second tube member 23, the second sealing jaw 24, the second supporting jaw 25, and the second magazine 26 are the second nut 22, the second tube member 23, the second sealing jaw 24, the second supporting jaw 25, and the second magazine 26.
  • FIG. 2 is a schematic structural view of a pipe joint sealing structure according to a first embodiment of the present invention
  • FIG. 3 is a schematic exploded view of the pipe joint sealing structure of FIG.
  • the pipe joint sealing structure provided by the present invention is used for sealing the pipe member 3, the joint between the joint body 1 and the nut 2, and the pipe joint sealing structure comprises sleeved on the outer side of the pipe member 3.
  • the coupling body 1 is a tubular structure having an inner hole, at least one end of which is provided with an external thread, and the end of the end forms a threaded port, the outer portion The thread is for engaging with the internal thread of the nut 2, and one end of the nut 2 has an internal thread for engaging with the external thread of the coupling body 1, the outer end of the magazine 6, the sealing jaw
  • the outer end of the supporting body 5 abuts against the threaded port of the coupling body 1 and the clamping end of the nut 2; one end of the supporting jaw 5 presses the inner end of the magazine 6, the supporting jaw The other end of the 5 is engaged with the inner end of the sealing jaw 4 at a right angle.
  • the sealing jaw 4 is caught in the gap between the magazine 6 and the coupling body 1, so that the sealing member can be closely fitted with the supporting jaw 5, the outer wall of the tube member 3, and the threaded end port of the coupling body 1, thereby ensuring the sealing effect of the seal;
  • the contact gap between the sealing jaw 4 and the supporting jaw 5 is L-shaped, which changes the path of external moisture entering, increases the difficulty of external moisture entering, and improves the sealing effect.
  • the inner end of the sealing jaw 4 has a right-angled groove
  • the corresponding end of the supporting jaw 5 has a right-angled protrusion
  • the right-angled groove and the right-angled protrusion Form a right angle interface to snap.
  • the sealing jaw 4 is a flexible member
  • the supporting jaw 5 is a rigid member, and the right-angled projection of the supporting jaw 5 can press the right-angle groove of the sealing jaw 4 to achieve a good sealing effect.
  • the right angle interface fastening structure formed by the supporting jaw 5 and the sealing jaw 4 may also be: the inner end of the sealing jaw 4 has a right-angled protrusion, and the corresponding end of the supporting jaw 5 has a right-angled groove. The right angle groove is engaged with the right angle protrusion to form a right angle interface.
  • Such a solution should also be within the scope of the present invention.
  • the front end surface of the right angle groove of the sealing jaw 4 is a slope surface
  • the rear end surface of the right angle protrusion of the support jaw 5 is in contact with the slope surface.
  • the other end of the support cymbal 5 is a sloped surface that presses the inner end of the magazine 6 .
  • this structure allows the support jaw 5 to tightly press the magazine 6, so that the magazine 6 can be quickly tightened, thereby being able to clamp the tube 3.
  • the outer end of the magazine 6 and the end surface of the outer end of the sealing jaw 4 respectively engage with the threaded port of the coupling body 1 or the end surface of the clamping end of the nut 2, as shown in FIG. 1
  • the threaded port of the coupling body 1 may be a beveled surface, and the end faces of the respective ends of the sealing jaws 4 are also matching bevels;
  • the inner side of the pressing end of the cap 2 is also a beveled surface, and correspondingly, the respective ends of the magazine 6 are also mating bevels.
  • the main sealing effect of the present invention is that the sealing jaw 4 is sealed with the outer wall of the pipe member 3, and the sealing jaw 3 can be sealed with the coupling body 1 and the supporting jaw 5, so that the external water cannot pass through the pipe fitting.
  • the outer wall, the thread of the coupling body 1, the inside of the tube member 3 of the L-shaped surface of the supporting jaw 5, the other side of the sealing jaw 4 is a sloped surface, the outer end is a single inclined surface, and the inner end is an L-shaped end with a sloped surface,
  • Two seals are formed, one for the seal between the seal ⁇ 4 and the threaded end of the coupling body 1 and the seal between the seal ⁇ 4 and the outer wall of the tubular member 3, and the seal between the seal ⁇ 4 and the support ⁇ 5
  • the sealing between the sealing jaw of the supporting end of the ⁇ 5 and the outer wall of the pipe member 3 can form two protective seals, and the sealing effect is better.
  • the pipe fitting sealing structure is installed in the following order: the sealing jaw 4 presses the threaded port of the coupling body 1, the supporting jaw 5 presses the sealing jaw 4, the magazine 6 presses the supporting jaw 5, and the magazine 6 abuts The clamped end of the nut 2.
  • the invention is not limited thereto.
  • the sealing sequence of the pipe joint sealing structure may also be: the sealing jaw 4 presses the clamping end of the nut 2, and the supporting jaw 5 is pressed.
  • the sealing jaw 4, the magazine 6 presses the support jaw 5, and the magazine 6 abuts against the threaded port of the coupling body 1.
  • the present invention also provides a pipe joint, as shown in FIG. 2 and FIG. 3, the pipe joint includes a coupling body 1 having a threaded connection end at both ends thereof, and a thread of the coupling body 1
  • the connecting end is connected with a nut 2, a tube member 3, and the above-mentioned sealing jaw 4, a supporting jaw 5, and a magazine 6.
  • the other threaded end of the coupling body 1 is shown with a locking nut 7 and a stopper ⁇ 8.
  • the pipe joint sealing structure formed by the sealing jaw 4, the supporting jaw 5, and the magazine 6 is the pipe joint sealing structure in the above embodiment. Since the above-mentioned pipe joint sealing structure has the above technical effects, the above-mentioned pipe joint sealing structure is provided.
  • the pipe joints should also have the corresponding technical effects.
  • the pipe joint provided by the present invention is not limited thereto.
  • the pipe joint includes a coupling body, and both ends of the coupling body have a screw connection end, and the coupling body has A threaded connection end is connected with a first nut 12, a first tube member 13, a first sealing jaw 14, a first supporting jaw 15, a first magazine 16, and another threaded end of the coupling body is mounted with a second screw
  • the first sealing jaw 14, the first supporting jaw 15, the first cartridge 16 forms a pipe joint sealing structure
  • the second sealing jaw 24, the second supporting jaw 25, and the second magazine 26 form a pipe joint seal
  • the structure is the pipe joint sealing structure in the above embodiment. Since the above-mentioned pipe joint sealing structure has the above technical effects, the pipe joint having the above-mentioned pipe joint sealing structure should also have corresponding technical effects.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Joints With Pressure Members (AREA)

Abstract

一种管接件密封结构以及具有该管接件密封结构的管接件，该管接件密封结构用于密封管件（3）、联接主体（1）与螺帽（2）之间的连接处，包括套于管件外侧的密封圈（4）、支撑圈（5）和弹圈（6），该弹圈的外侧端抵靠该联接主体的螺纹端口和该螺帽的卡紧端中的一个，该密封圈的外侧端抵靠该联接主体的螺纹端口和该螺帽的卡紧端中的另一个；该支撑圈的一端压紧该弹圈的内侧端，该支撑圈的另一端与该密封圈的内侧端形成直角接口扣合。该管接件密封结构可防止密封圈在管件径向发生错位或窜动，确保密封效果；密封圈与支撑圈之间的接触缝隙呈L形，改变了外部水分进入时的路径，增加了外部水分进入的难度，提高了密封效果。

Description

一种管接件密封结构及管接件 本申请要求于 2012 年 11 月 26 日提交中国专利局、 申请号为 201210484870.1、 发明名称为"一种管接件密封结构及管接件"的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及管接件技术领域， 尤其涉及一种管接件密封结构， 本发明 还涉及一种具有上述管接件密封结构的管接件。
背景技术
EMT ( electrical-metallic tubing )是一种常见的电线管， 其端部通常采 用管接件连接。
以下结合附图对现有技术中的一种管接件进行介绍，请参看图 1 , 图 1 为一种典型管接件的结构示意图。
该管接件通常包括联接主体 1，、 螺帽 2，、 密封圏 4，、 支撑圏 5，及弹圏 6'； 密封圏 4，、 支撑圏 5，、弹圏 6，套于 EMT (本申请中称为管件 3，）外侧， 随管件 3，一起套入联接主体 1，的内孔中； 联接主体 1，至少一端为螺纹连接 端， 该端具有外螺纹， 用于与螺帽 2，相配合， 所述螺帽 2，具有内螺纹； 螺 帽 2，的一端与所述联接主体 Γ的螺纹连接端连接， 另一端形成卡紧端， 用 于卡紧弹圏 6，， 旋紧螺帽 2，时， 螺帽 2，将压紧所述弹圏 6，， 进而压紧管件 3% 实现管件 3，与联接主体 1，的固定连接。
其中， 密封圏 4，用于防止外部水沿着螺帽 2，、 管件 3，及联接主体 1， 的连接处进入管件 3，内， 密封圏 4，的一端抵靠联接主体 1，的螺纹连接端端 口， 另一端的端面抵靠支撑圏 5，的端面， 支撑圏 5，的另一端压紧弹圏 6，。 其中， 密封圏 4，抵靠支撑圏 5，的一端为平面， 且支撑圏 5，的对应端也为平 面， 即二者的抵靠面为平面。
密封圏 4，与支撑圏 5，的这种配合结构存在以下问题:在安装密封圏 4，、 支撑圏 5，时， 由于密封圏 4，与支撑圏 5，之间为平面接触， 密封圏 4，沿管件 3，径向容易出现错位或窜动， 而且由于密封圏 4，通常为柔性件， 容易卡入 弹圏 6，与联接主体 1，之间的缝隙内， 使得密封件不能与支撑圏 5，、 联接主 体 1，的螺纹连接端端口紧密贴合， 从而使得密封失效， 无法起到防水的效 果； 而且， 在管接件使用过程中， 由于密封圏 4，与支撑圏 5，之间为平面接 触， 二者之间仍会有一定的缝隙， 密封效果较差。
因此， 如何防止密封圏错位、 提高管接件的密封效果， 成为本领域技 术人员亟待解决的技术难题。 发明内容
本发明的第一个目的是提供一种管接件密封结构， 该管接件密封结构 可防止密封圏错位、 提高管接件的密封效果。 本发明的第二个目的是提供 一种具有上述管接件密封结构的管接件。
为了实现上述第一个目的， 本发明提供了一种管接件密封结构， 用于 密封管件、 联接主体与螺帽之间的连接处， 包括套于所述管件外侧的密封 圏、 支撑圏、 弹圏， 所述弹圏的外侧端、 所述密封圏的外侧端分别抵靠所 述联接主体的螺纹端口或所述螺帽的卡紧端； 所述支撑圏的一端压紧所述 弹圏的内侧端， 所述支撑圏的另一端与所述密封圏的内侧端形成直角接口 扣合。
优选的， 所述密封圏的内侧端具有直角形 槽， 所述支撑圏的相应端 具有直角形突起， 所述直角 槽与所述直角形突起形成直角接口扣合。
优选的， 所述直角形 槽前端面为斜坡面， 所述直角形突起的后端面 与所述斜坡面贴合。
优选的， 所述密封圏的内侧端具有直角形突起， 所述支撑圏的相应端 具有直角形 槽， 所述直角 槽与所述直角形突起形成直角接口扣合。
优选的， 所述支撑圏的一端为斜面， 该斜面压紧所述弹圏的内侧端。 优选的， 所述弹圏的外侧端、 所述密封圏的外侧端的端面分别与所述 联接主体的螺纹端口或所述螺帽的卡紧端的端面贴合。
本发明提供的管接件密封结构包括套于管件外侧的密封圏、 支撑圏、 弹圏， 所述弹圏的外侧端、 所述密封圏的外侧端分别抵靠所述所述联接主 体的螺纹端口或所述螺帽的卡紧端； 所述支撑圏的一端压紧所述弹圏的内 侧端， 所述支撑圏的另一端与所述密封圏的内侧端形成直角接口扣合。 这种结构的管接件密封结构， 密封圏与支撑圏的接触面以直角接口扣 合的方式抵靠接触， 在安装密封圏、 支撑圏时， 密封圏与能支撑圏紧密扣 合， 二者之间的直角接口扣合结构在管件径向对密封圏进行限位， 可防止 密封圏在管件径向发生错位或窜动， 从而可以避免密封圏卡入弹圏与联接 主体之间的缝隙内， 使得密封件能够与支撑圏、 管件外壁、 联接主体的螺 纹连接端端面紧密贴合， 确保密封的密封效果； 而且， 密封圏与支撑圏之 间的接触缝隙呈 L形， 改变了外部水分进入时的路径， 增加了外部水分进 入的难度， 提高了密封效果。
为了实现上述第二个目的， 本发明还提供了一种管接件， 该管接件包 括联接主体， 所述联接主体两端均具有螺纹连接端， 所述联接主体的至少 一个螺纹连接端连接有螺帽、 管件及上述的管接件密封结构。 由于上述的 管接件密封结构具有上述技术效果， 具有上述管接件密封结构的管接件也 应具备相应的技术效果。
优选的， 所述联接主体的两端的螺纹连接端均连接有螺帽、 管件及上 述的管接件的密封结构。
优选的， 所述联接主体的一端的螺纹连接端连接有螺帽、 管件及上述 的管接件的密封结构， 另一端的螺纹连接端连接有锁定螺母和止挡圏。
附图说明
图 1为一种典型管接件的结构示意图；
图 2为本发明第一实施例所提供的管接件密封结构的结构示意图； 图 3为图 2中管接件密封结构的爆炸结构示意图；
图 4为图 2中密封件、 弹圏、 支撑圏相配合的局部放大结构示意图； 图 5为图 4中密封件与支撑圏相配合的局部放大结构示意图； 图 6为本发明第二实施例所提供的管接件密封结构的结构示意图； 图 7为图 6中密封件、 弹圏、 支撑圏相配合的局部放大结构示意图； 图 8为图 7中密封件与支撑圏相配合的局部放大结构示意图； 图 9为本发明一种具体实施方式所提供的管接件的结构示意图； 图 10为图 9中管接件的爆炸结构示意图；
图 11为本发明另一具体实施方式所提供的管接件的结构示意图； 其中， 图 1-图 11中：
联接主体 Γ、 螺帽 2，、 管件 3，、 密封圏 4，、 支撑圏 5，、 弹圏 6，； 联接主体 1、 螺帽 2、 管件 3、 密封圏 4、 支撑圏 5、 弹圏 6、 锁定螺帽 7、 止挡圏 8;
第一螺帽 12、 第一管件 13、 第一密封圏 14、 第一支撑圏 15、 第一弹 圏 16;
第二螺帽 22、 第二管件 23、 第二密封圏 24、 第二支撑圏 25、 第二弹 圏 26。
具体实施方式
为了使本领域的技术人员更好的理解本发明的技术方案， 下面结合附 图和具体实施方式对本发明作进一步的详细说明。
请参看图 2、 图 3 , 图 2为本发明第一实施例所提供的管接件密封结构 的结构示意图； 图 3为图 2中管接件密封结构的爆炸结构示意图。
如图 2、 图 3所示， 本发明提供的管接件密封结构用于密封管件 3、联 接主体 1与螺帽 2之间的连接处， 该管接件密封结构包括套于管件 3外侧 的密封圏 4、 支撑圏 5、 弹圏 6, 具体的实施方式中， 所述联接主体 1为具 有内孔的管状结构， 其至少一端设有外螺纹， 该端的端部形成螺纹端口， 所述外螺纹用于与螺帽 2的内螺纹啮合配合， 所述螺帽 2的一端具有内螺 纹， 用于与所述联接主体 1的外螺纹啮合， 所述弹圏 6的外侧端、 所述密 封圏 4的外侧端分别抵靠所述所述联接主体 1的螺纹端口、 所述螺帽 2的 卡紧端； 所述支撑圏 5的一端压紧所述弹圏 6的内侧端， 所述支撑圏 5的 另一端与所述密封圏 4的内侧端形成直角接口扣合。
这种结构的管接件密封结构， 密封圏 4与支撑圏 5的接触面以直角接 口扣合的方式抵靠接触， 在安装密封圏 4、 支撑圏 5时， 密封圏 4与能支 撑圏 5紧密扣合， 二者之间的直角接口扣合结构在管件 3径向对密封圏 4 进行限位， 可防止密封圏 4在管件 3径向发生错位或窜动， 从而可以避免 密封圏 4卡入弹圏 6与联接主体 1之间的缝隙内， 使得密封件能够与支撑 圏 5、 管件 3外壁、 联接主体 1的螺纹连接端端口紧密贴合， 确保密封的 密封效果； 而且， 密封圏 4与支撑圏 5之间的接触缝隙呈 L形， 改变了外 部水分进入时的路径， 增加了外部水分进入的难度， 提高了密封效果。
具体的方案中， 如图 4、 图 5所示， 所述密封圏 4的内侧端具有直角 形 槽， 所述支撑圏 5的相应端具有直角形突起， 所述直角 槽与所述直 角形突起形成直角接口扣合。 这种方案， 由于密封圏 4为柔性部件， 支撑 圏 5为刚性部件， 支撑圏 5的直角形突起可以压紧密封圏 4的直角 槽， 可以达到良好的密封效果。
可以理解， 所述支撑圏 5与所述密封圏 4形成的直角接口扣合结构也 可以为： 所述密封圏 4的内侧端具有直角形突起， 所述支撑圏 5的相应端 具有直角形 槽， 所述直角 槽与所述直角形突起形成直角接口扣合。 这 种方案也应在本发明的保护范围内。
进一步的方案中， 所述密封圏 4的直角形 槽前端面为斜坡面， 所述 支撑圏 5的直角形突起的后端面与所述斜坡面贴合。 这种结构可增大密封 圏 4与支撑圏 5的接触面积， 并延长了外部水分进入时的路径， 密封圏 4 与支撑圏 5配合端的斜面被支撑圏 5的斜面压紧后往里缩压紧管件 3外壁， 使外部水也无法通过管件 3的外壁流入管内， 提高了密封效果。
优选的方案中， 所述支撑圏 5的另一端为斜面， 该斜面压紧所述弹圏 6的内侧端。 在旋紧螺帽 2时， 这种结构可使得支撑圏 5紧密压紧弹圏 6, 使得弹圏 6能够快速紧缩， 进而能够夹紧管件 3。
进一步的方案中， 所述弹圏 6的外侧端、 所述密封圏 4的外侧端的端 面分别与所述联接主体 1的螺纹端口或所述螺帽 2的卡紧端的端面贴合， 如图 1所示， 为了能够压紧弹圏 6, 支撑圏 5、 密封圏 4, 所述联接主体 1 的螺纹端口可以为斜面，所述密封圏 4的相应端的端面也为相配合的斜面； 所述螺帽 2的压紧端的内侧也为斜面， 相应地， 所述弹圏 6的相应端也为 相配合的斜面。
由此可见， 本发明主要密封效果是密封圏 4与管件 3外壁密封的同时 可以使密封圏 3与联接主体 1和支撑圏 5的密封， 使外部水无法通过管件 3外壁、 联接主体 1的螺纹处、 支撑圏 5的 L型面流处管件 3里面， 另密 封圏 4两侧均为斜面， 外侧端为单一斜面， 内侧端为 L型端部带斜面， 可 以形成两处密封， 一处为密封圏 4与联接主体 1螺纹端之间的密封和密封 圏 4与管件 3外壁处之间的密封， 二处为密封圏 4与支撑圏 5之间的密封 和支撑圏 5配合端的密封圏与管件 3外壁处之间的密封， 这样就可以形成 两道防护密封， 密封效果更佳。
上述实施例中， 管接件密封结构的安装顺序为： 密封圏 4压紧联接主 体 1的螺纹端口， 支撑圏 5压紧密封圏 4, 弹圏 6压紧支撑圏 5 , 弹圏 6 抵靠螺帽 2的卡紧端。 本发明还不局限于此， 如图 6、 图 7、 图 8所示， 管 接件密封结构的安装顺序还可以为： 密封圏 4压紧螺帽 2的卡紧端， 支撑 圏 5压紧密封圏 4, 弹圏 6压紧支撑圏 5 , 弹圏 6抵靠联接主体 1的螺纹端 口。 以上两种方案均应在本发明的保护范围内。
本发明还提供了一种管接件， 如图 2、 图 3所示， 该管接件包括联接 主体 1 , 所述联接主体 1两端均具有螺纹连接端， 所述联接主体 1的一个 螺纹连接端连接有螺帽 2、 管件 3及上述的密封圏 4、 支撑圏 5、 弹圏 6, 所示联接主体 1的另一螺纹连接端安装有锁定螺帽 7、止挡圏 8。密封圏 4、 支撑圏 5、 弹圏 6形成的管接件密封结构为上述实施例中的管接件密封结 构， 由于上述的管接件密封结构具有上述技术效果， 具有上述管接件密封 结构的管接件也应具备相应的技术效果。
本发明提供的管接件并不局限于此， 如图 9、 图 10、 图 11所示， 该管 接件包括联接主体， 所述联接主体两端均具有螺纹连接端， 所述联接主体 的一个螺纹连接端连接有第一螺帽 12、 第一管件 13、 第一密封圏 14、 第 一支撑圏 15、第一弹圏 16,所示联接主体的另一螺纹连接端安装有第二螺 帽 22、 第二管件 23、 第二密封圏 24、 第二支撑圏 25、 第二弹圏 26。 其中， 第一密封圏 14、 第一支撑圏 15、 第一弹圏 16形成的管接件密封结构， 第 二密封圏 24、 第二支撑圏 25、 第二弹圏 26形成的管接件密封结构为上述 实施例中管接件密封结构。由于上述的管接件密封结构具有上述技术效果， 具有上述管接件密封结构的管接件也应具备相应的技术效果。
以上所述仅是发明的优选实施方式的描述， 应当指出， 由于文字表达 的有限性， 而在客观上存在无限的具体结构， 对于本技术领域的普通技术 人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、一种管接件密封结构， 用于密封管件、联接主体与螺帽之间的连接 处， 其特征在于， 包括套于所述管件外侧的密封圏、 支撑圏、 弹圏， 所述 弹圏的外侧端、 所述密封圏的外侧端分别抵靠所述联接主体的螺纹端口或 所述螺帽的卡紧端； 所述支撑圏的一端压紧所述弹圏的内侧端， 所述支撑 圏的另一端与所述密封圏的内侧端形成直角接口扣合。
2、根据权利要求 1所述的管接件密封结构， 其特征在于， 所述密封圏 的内侧端具有直角形 槽， 所述支撑圏的相应端具有直角形突起， 所述直 角 槽与所述直角形突起形成直角接口扣合。
3、根据权利要求 2所述的管接件密封结构， 其特征在于， 所述直角形 凹槽前端面为斜坡面， 所述直角形突起的后端面与所述斜坡面贴合。
4、根据权利要求 1所述的管接件密封结构， 其特征在于， 所述密封圏 的内侧端具有直角形突起， 所述支撑圏的相应端具有直角形 槽， 所述直 角 槽与所述直角形突起形成直角接口扣合。
5、 根据权利要求 1-4任一项所述的管接件密封结构， 其特征在于， 所 述支撑圏的一端为斜面， 该斜面压紧所述弹圏的内侧端。
6、根据权利要求 1所述的管接件密封结构， 其特征在于， 所述弹圏的 外侧端、 所述密封圏的外侧端的端面分别与所述联接主体的螺纹端口或所 述螺帽的卡紧端的端面贴合。
7、一种管接件，包括联接主体，所述联接主体两端均具有螺纹连接端， 其特征在于， 所述联接主体的至少一个螺纹连接端连接有螺帽、 管件及权 利要求 1-6任一项所述的管接件密封结构。
8、根据权利要求 7所述的管接件， 其特征在于， 所述联接主体的两端 的螺纹连接端均连接有螺帽、 管件及权利要求 1-6任一项所述的管接件的 密封结构。
9、根据权利要求 7所述的管接件， 其特征在于， 所述联接主体的一端 的螺纹连接端连接有螺帽、 管件及权利要求 1-6任一项所述的管接件的密 封结构， 另一端的螺纹连接端连接有锁定螺母和止挡圏。
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