WO2013159496A1 - 一种bsp防水电缆接头 - Google Patents

一种bsp防水电缆接头 Download PDF

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Publication number
WO2013159496A1
WO2013159496A1 PCT/CN2012/083220 CN2012083220W WO2013159496A1 WO 2013159496 A1 WO2013159496 A1 WO 2013159496A1 CN 2012083220 W CN2012083220 W CN 2012083220W WO 2013159496 A1 WO2013159496 A1 WO 2013159496A1
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WO
WIPO (PCT)
Prior art keywords
sealing
bsp
wall
cable joint
barb
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PCT/CN2012/083220
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English (en)
French (fr)
Inventor
刘玉柱
Original Assignee
乐清市信达利实业有限公司
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Publication of WO2013159496A1 publication Critical patent/WO2013159496A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H02G3/083—Inlets

Definitions

  • the invention relates to the fixing and protection of wires and cables of mechanical equipment electrical, marine electrical and anti-corrosion equipment, and particularly relates to a BSP (British Standard Pipe) waterproof cable joint.
  • BSP British Standard Pipe
  • Cable connectors are widely used in the fixing and protection of wire and cable for mechanical equipment, marine electrical, and anti-corrosion equipment.
  • the main function is to make the line unobstructed, keep the cable sealed, and ensure the insulation level at the cable joint for safe and reliable operation. Prevent dangerous gases from entering the instrument or junction box to avoid explosions, and moisture can also intrude into the cable, degrading paper insulation.
  • fastening connectors there are a number of fastening connectors on the market which are fastened and fastened. Such fastening connectors are often provided in a simple threaded manner.
  • the patent document CN 201934483 U discloses a fastening connector, which is a fastening connector.
  • the structure includes a plastic joint body and a plastic joint fastener;
  • the joint body has a basic shape of a tubular shape, and includes a joint portion provided with an external thread and a seal portion provided with a plurality of seal teeth, wherein the seal teeth are arranged in a ring shape
  • the joint fastener has a tubular shape, and includes a fastening portion provided with an internal thread and a crimping portion with a crimping surface, and the joint surface of the joint fastener 2 is provided with a plurality of protrusions
  • the anti-slip teeth, the anti-slip teeth abut on the sealing area of the joint body.
  • the above fastening connector has a simple structure and is convenient to operate, but it still has the following problems during use:
  • the fastening of the cable is mainly achieved by the fixed head. Function, the inner wall of the sealing tooth is smooth, and the clamping force to the cable is insufficient.
  • the cable will slide in the axial direction, thereby affecting the waterproof sealing effect and the insulating effect of the fastening connector.
  • the invention solves the technical problem that the cable joint in the prior art has low fastening degree to the cable, is prone to looseness, cannot achieve a good waterproof sealing effect, and further provides a good fastening cable capability and has BSP waterproof cable connector with good waterproof sealing effect.
  • a BSP waterproof cable connector including:
  • a plastic body comprising a connection zone and a sealing zone provided with sealing teeth
  • the sealing zone is provided with an external thread that cooperates with the internal thread of the fixed head
  • the connecting zone is provided with an external thread that cooperates with the internal thread of the fastener
  • sealing ring radially adapted to fit inside the plastic body and conform to the wall of the sealing zone
  • the inner wall of the sealing tooth is formed with at least one barb in the direction of the central axis;
  • An annular step that cooperates with the barb is formed at a position where the outer wall of the sealing ring is in contact with the barb.
  • the barb is formed on the top end of the sealing tooth.
  • the inner wall of the sealing ring is provided with at least one anti-slip rib.
  • a gasket is also included, the gasket being sleeved outside the connection zone.
  • the surface of the gasket in contact with the plastic body is circumferentially disposed with at least one ring of sealing ribs.
  • the inner wall of the gasket is provided with a support portion adapted to the depth of the external thread of the plastic body.
  • the inner wall of the fixed head is provided with at least one anti-retracting tooth, and the anti-retracting tooth cooperates with a gap between adjacent sealing teeth when fastening.
  • the shape of the longitudinal section of the anti-backing tooth is trapezoidal or semi-circular or triangular.
  • the BSP waterproof cable joint provided by the present invention cooperates with the annular step provided on the outer wall of the sealing ring by the barb provided on the inner wall of the sealing tooth, and when the BSP waterproof cable joint is fastened, the sealing tooth is subjected to the fixed head.
  • the pressure is close to the central axis, and the barbs are pressed against the annular step of the outer wall of the sealing ring, thereby increasing the force between the sealing teeth and the sealing ring, having better fastening effect and anti-loose effect, and due to this
  • the force between the barb and the sealing ring makes the cable not easy to loosen and also has a better sealing property.
  • the BSP waterproof cable joint provided by the invention has at least one anti-slip rib on the inner wall of the sealing ring.
  • the presence of the anti-slip rib strengthens the fastening degree of the sealing ring to the cable, and is effective Prevent the cable from slipping off.
  • the BSP waterproof cable joint provided by the present invention further includes a gasket which is sleeved on the outer side of the connecting portion of the plastic body, and is fastened by the fastener during the fastening process, and the surface axis of the gasket in the present invention is in contact with the plastic body. At least one ring of sealing ribs is provided, and the sealing ribs on the gasket are compressed by the fastening action of the plastic body and the fastener, which is equivalent to adding several door bars, and the waterproof performance is greatly improved.
  • the BSP waterproof cable joint provided by the present invention is provided with a support portion which is adapted to the depth of the external thread of the plastic body on the inner wall of the gasket, so that the gasket can be sleeved on the outside of the plastic body without falling off, and is convenient for installation.
  • the inner wall of the fixed head of the present invention is provided with at least one anti-retracting tooth, and the anti-retracting tooth cooperates with the gap between the adjacent sealing teeth during fastening, and can well seal the teeth during the fastening process.
  • the gap is locked, so that it can not be easily reversed, and it plays a role in fastening the cable for a long time.
  • FIG. 1 is a schematic structural view of a BSP waterproof cable joint of the present invention
  • FIG. 2 is a schematic structural view of a plastic body and a sealing ring in an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a gasket in an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a fixed head according to an embodiment of the present invention.
  • the reference numerals are: 1-fixed head, 10-anti-retraction, 2-sealing ring, 20-ring step, 3-plastic body, 30-sealing tooth, 31-barb, 4-washer, 40-seal rib , 41-support, 5-fixed.
  • the embodiment discloses a BSP waterproof cable joint, as shown in FIG. 1, comprising: a fixed head 1 provided with internal threads; a fastener 5 provided with internal threads; a plastic body 3 including a connecting area and a sealing tooth a sealing portion of the sealing portion; the sealing portion is provided with an external thread that cooperates with the internal thread of the fixed head 1; the connecting portion is provided with an external thread that cooperates with the internal thread of the fastener 5; the sealing ring 2, the radial direction Suitable for loading into the interior of the plastic body 3 and conforming to the wall of the sealing zone;
  • a barb 31 is formed on the top end of the sealing tooth 30, and an annular step of the barb 31 is formed at a position where the outer wall of the sealing ring 2 is in contact with the barb 31. 20;
  • the sealing teeth 30 are pressed toward the central axis by the pressure from the fixed head 1, and the barbs 31 are pressed against the outer ring of the outer wall of the sealing ring 2
  • the force between the sealing teeth 30 and the sealing ring 2 is thus increased, and the fastening effect and the anti-loose effect are better.
  • the embodiment can be further modified to form more than one barb 31 in the direction of the central axis of the inner wall of the sealing tooth 30; correspondingly in the sealing ring 2
  • the outer wall of the outer wall is formed with a plurality of annular steps 20 engaged with the barbs 31; and the plurality of the barbs 31 cooperate with the plurality of the annular steps 20 to further strengthen The fixing effect and sealing effect on the cable.
  • the seal ring 2 is modified. As shown in the figure, at least one anti-slip rib is disposed on the inner wall of the seal ring 2. When the cable passes through the seal ring 2, the presence of the anti-slip rib enhances the degree of fastening of the seal ring 2 to the cable, thereby effectively preventing the cable from slipping off.
  • Example 3
  • This embodiment further includes, on the basis of Embodiment 1 and Embodiment 2, a gasket 4, and the gasket 4 is sleeved outside the joint region.
  • a gasket 4 in order to enhance the waterproof performance of the BSP waterproof cable joint, at least one ring of sealing ribs 40 may be circumferentially disposed on the surface of the gasket 4 in contact with the plastic body 3.
  • the sealing rib 40 on the gasket 4 is compressed, which is equivalent to the addition of several door sills, and the waterproof performance is greatly improved.
  • the inner wall of the gasket 4 is provided with a support portion 41 adapted to the depth of the external thread of the plastic body 3. Therefore, the gasket 4 can be sleeved on the outside of the plastic body 3 without falling off, which is convenient for installation.
  • the embodiment is improved on the basis of any one of the first embodiment to the third embodiment.
  • at least one anti-backing tooth 10 is disposed on the inner wall of the fixed head 1, and the anti-backing tooth 10 is tight.
  • the solid time is matched with the gap between the adjacent sealing teeth 3.
  • the inner wall of the fixed head 1 is provided with three anti-backing teeth 10.
  • the shape of the longitudinal section of the anti-backing tooth 10 is trapezoidal or semi-circular or triangular.
  • the anti-retraction tooth 10 cooperates with the gap between the adjacent sealing teeth 30 when tightening, and can lock the gap between the sealing teeth 30 well during the fastening process, so as not to be easy Treatment, which acts as a long-term fastening cable.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cable Accessories (AREA)
  • Gasket Seals (AREA)

Abstract

一种BSP防水电缆接头，包括定头（1），设有内螺纹；紧固件（5），设有内螺纹；塑料主体（3），包括设有密封齿（30）的密封区和连接区；密封区设置有与定头内螺纹配合的外螺纹；连接区设置有与紧固件内螺纹配合的外螺纹；密封圈（2），径向适于装入塑料主体内部并与密封区内壁贴合；密封齿内壁向中心轴线方向成型有至少一个倒钩（31）；密封圈外壁与倒钩贴合的位置成型有与倒钩配合的环形台阶（20）。该BSP防水电缆接头在紧固过程中，定头拧紧，密封齿受压向中心轴线压缩，倒钩恰好与密封圈的环形台阶配合，压紧密封圈，从而增加了对其内穿过线缆的紧固力，增强了密封和防水效果。

Description

种 BSP防水电缆接头 技术领域
本发明涉及机械设备电气、 船舶电气、 防蚀设备的电线电缆的固定和保护， 具体涉及一种 BSP ( British Standard Pipe英国标准管螺紋） 防水电缆接头。
背景技术
电缆接头广泛应用于机械设备电气、 船舶电气、 防蚀设备的电线电缆的固定和保护。 主要作用 是使线路通畅， 使电缆保持密封， 并保证电缆接头处的绝缘等级， 使其安全可靠地运行。 防止危险 气体进入仪表或是接线箱， 从而避免爆炸， 而且潮气也会侵入电缆内部， 使纸绝缘性能下降。
目前市场上的有许多起紧固连接作用的紧固连接件， 这种紧固连接件多采用简单的螺紋固定方 式， 如专利文献 CN 201934483U公开了一种紧固连接件， 该紧固连接件的结构包括塑料接头体和塑 料接头紧固件； 所述接头体的基本形状为管状， 包括设有外螺紋的连接区和设有多个密封齿的密封 区， 所述密封齿排列呈环状； 所述接头紧固件的基本形状为管状， 包括设有内螺紋的紧固区和内设 压接面的压接区， 所述接头紧固件 2的压接面上设有数个凸起的防滑齿， 所述防滑齿抵在所述接头 体的密封区上。 上述紧固连接件结构简单， 操作方便， 但是其在使用过程中还是存在如下问题： 该 紧固连接件长期使用或者在高频振动的环境下使用时， 主要靠定头实现对电缆的紧固作用， 密封齿 内壁光滑， 对电缆的夹紧力不足， 一旦定头在高频振动的环境下脱落， 会导致电缆沿轴向滑动， 进 而影响紧固连接件的防水密封效果和绝缘效果。 发明内容
本发明要解决的是现有技术中的电缆接头对电缆的紧固程度不高， 容易出现松动， 不能达到 良好的防水密封效果的技术问题， 进而提供一种具有良好的紧固电缆能力并且具有良好防水密封 效果的 BSP防水电缆接头。
为解决上述技术问题， 本发明提供一种 BSP防水电缆接头， 包括：
定头， 设有内螺紋；
紧固件， 设有内螺紋；
塑料主体， 包括连接区和设有密封齿的密封区；
所述密封区设置有与所述定头内螺紋配合的外螺紋；
所述连接区设置有与所述紧固件内螺紋配合的外螺紋；
密封圈， 径向适于装入所述塑料主体内部并与所述密封区内壁贴合；
所述密封齿内壁向中心轴线方向成型有至少一个倒钩；
所述密封圈外壁与所述倒钩贴合的位置成型有与所述倒钩配合的环形台阶。
所述倒钩成型于所述密封齿的顶端。
所述密封圈内壁设置有至少一个防滑筋。
还包括垫圈， 所述垫圈套设于所述连接区外侧。
所述垫圈与所述塑料主体接触的表面周向设置至少一圈密封筋。
所述垫圈内壁设置有与所述塑料主体外螺紋深度适配的支撑部。 所述定头内壁设置有至少一个防退齿， 所述防退齿在紧固时与相邻所述密封齿之间的空隙配 合。
所述防退齿纵向截面的形状为梯形或半圆形或三角形。
本发明的上述技术方案具有如下优点：
( 1 )本发明提供的 BSP防水电缆接头， 通过设置在密封齿上内壁的倒钩与设置在密封圈外壁的 环形台阶相配合， 当 BSP防水电缆接头紧固时， 密封齿受到来自定头的压力向中心轴线靠拢， 倒钩 恰好压在密封圈外壁的环形台阶上， 因此增大了密封齿与密封圈之间的作用力， 具有更好的紧固效 果和防松动效果， 并且正由于这一设计， 即使定头在高频振动的作用下松脱， 倒钩和密封圈之间的 作用力也使得电缆不容易松动脱落， 同时也具有更好的密封性。
( 2 )本发明提供的 BSP防水电缆接头， 在密封圈内壁设置至少一个防滑筋， 电缆从密封圈内穿 过时， 由于有防滑筋的存在， 加强了密封圈对电缆的紧固程度， 可有效防止电缆的滑动脱落。
( 3 )本发明提供的 BSP防水电缆接头， 还包括垫圈， 垫圈套设于塑料主体连接区的外侧， 紧固 过程中由紧固件压紧， 本发明中的垫圈与塑料主体接触的表面轴向设置至少一圈密封筋， 通过塑料 主体与紧固件的紧固作用， 使得垫圈上的密封筋被压缩， 相当于增加了几道门栏， 防水性能大大提
( 4 )本发明提供的 BSP防水电缆接头，在垫圈内壁设置有与塑料主体外螺紋深度适配的支撑部， 由此垫片可套接在塑料主体外部不脱落， 方便安装。
( 5 )本发明中的定头内壁设置有至少一个防退齿， 防退齿在紧固时与相邻密封齿之间的空隙配 合， 能够在紧固过程中很好的将密封齿之间的缺口锁住， 不让其轻易倒退， 起到长久紧固电缆的作 用。 附图说明
为了使本发明的内容更容易被清楚的理解， 下面根据本发明的具体实施例并结合附图， 对本发 明作进一步详细的说明， 其中：
图 1为本发明 BSP防水电缆接头结构示意图；
图 2为本实用一个实施例中塑料主体与密封圈配合的结构示意图；
图 3为本发明一个实施例中垫圈的结构示意图；
图 4为本发明一个实施例中定头的结构示意图；
其中附图标记为： 1-定头， 10-防退齿， 2-密封圈， 20-环形台阶， 3-塑料主体， 30-密封齿， 31- 倒钩， 4-垫圈， 40-密封筋， 41-支撑部， 5-固定件。 具体实施方式 实施例 1
本实施例公开一种 BSP防水电缆接头， 如图 1所示， 包括： 定头 1， 设有内螺紋； 紧固件 5， 设 有内螺紋； 塑料主体 3， 包括连接区和设有密封齿 30的密封区； 所述密封区设置有与所述定头 1内 螺紋配合的外螺紋； 所述连接区设置有与所述紧固件 5 内螺紋配合的外螺紋； 密封圈 2， 径向适于 装入所述塑料主体 3内部并与所述密封区内壁贴合；
在本实施例中， 在所述密封齿 30的顶端成型有一个倒钩 31， 所述密封圈 2外壁与所述倒钩 31 贴合的位置成型有与所述倒钩 31配合的一个环形台阶 20;
当本实施例中 BSP防水电缆接头紧固时，所述密封齿 30受到来自所述定头 1的压力向中心轴线 靠拢， 所述倒钩 31恰好压在所述密封圈 2外壁的所述环形台阶 20上， 如图 2中所示那样， 因此增 大了所述密封齿 30与所述密封圈 2之间的作用力， 具有更好的紧固效果和防松动效果。 根据所述倒钩 31与所述环形台阶 20的配合，本实施例还可以变形为在所述密封齿 30内壁向中 心轴线方向成型有一个以上的倒钩 31 ; 相应的在所述密封圈 2的外壁与所述倒钩 31贴合的位置成 型有与所述倒钩 31配合的多个环形台阶 20; 由多个所述倒钩 31与多个所述环形台阶 20配合， 更 进一步的加强了对电缆的固定作用和密封作用。
由于采用了所述倒钩 31和所述环形台阶 20的配合， 即使所述定头 1松动脱落， 所述密封圈 2 也不会沿轴向滑动， 依然可以使得电缆固定。 实施例 2
本实施例在实施例 1的基础上， 对所述密封圈 2进行改进， 如图所述密封圈 2内壁设置有至少 一个防滑筋。 电缆从所述密封圈 2内穿过时， 由于有所述防滑筋的存在， 加强了所述密封圈 2对电 缆的紧固程度， 可有效防止电缆的滑动脱落。 实施例 3
本实施例在实施例 1和实施例 2的基础上， 还包括垫圈 4， 所述垫圈 4套设于所述连接区外侧。 如图 3所示， 为了加强该 BSP防水电缆接头的防水性能， 可以在所述垫圈 4与所述塑料主体 3接触 的表面周向设置至少一圈密封筋 40。 通过所述塑料主体 3与所述紧固件 5的紧固作用， 使得所述垫 圈 4上的所述密封筋 40被压缩， 相当于增加了几道门栏， 防水性能大大提高。
更进一步的， 所述垫圈 4内壁设置有与所述塑料主体 3外螺紋深度适配的支撑部 41。 由此所述 垫圈 4可套接在所述塑料主体 3外部不脱落， 方便安装。 实施例 4
本实施例是在实施例 1至实施例 3中任一实施例的基础上进行改进， 本实施例在所述定头 1内 壁设置有至少一个防退齿 10， 所述防退齿 10在紧固时与相邻所述密封齿 3之间的空隙配合。如图 2 所示， 本实施例中所述定头 1内壁设置有三个所述防退齿 10。
优选地， 所述防退齿 10纵向截面的形状为梯形或半圆形或三角形。
所述防退齿 10在紧固时与相邻所述密封齿 30之间的空隙配合， 能够在紧固过程中很好的将所 述密封齿 30之间的缺口锁住， 不让其轻易倒退， 起到长久紧固电缆的作用。
显然， 上述实施例仅仅是为清楚地说明所作的举例， 而并非对实施方式的限定。 对于所属领域 的普通技术人员来说， 在上述说明的基础上还可以做出其它不同形式的变化或变动。 这里无需也无 法对所有的实施方式予以穷举。 而由此所引伸出的显而易见的变化或变动仍处于本发明的保护范围 之中。

Claims

权 利 要 求 书
1、 一种 BSP防水电缆接头， 包括： 定头 （1)， 设有内螺紋；
紧固件 （5)， 设有内螺紋；
塑料主体 （3)， 包括连接区和设有密封齿 （30) 的密封区； 所述密封区设置有与所述定头 （1) 内螺紋配合的外螺紋；
所述连接区设置有与所述紧固件 （5) 内螺紋配合的外螺紋；
密封圈 （2)， 径向适于装入所述塑料主体 （3) 内部并与所述密封区内壁贴合； 其特征在于：
所述密封齿 （30) 内壁向中心轴线方向成型有至少一个倒钩 （31);
所述密封圈 （2)外壁与所述倒钩 （31) 贴合的位置成型有与所述倒钩 （31)配合的环形台阶（20)。
2、 根据权利要求 1所述的 BSP防水电缆接头， 其特征在于： 所述倒钩 （31) 成型于所述密封齿 （30) 的顶端。
3、 根据权利要求 1或 2所述的 BSP防水电缆接头， 其特征在于： 所述密封圈 （2) 内壁设置有至少一个防滑筋。
4、 根据权利要求 3所述的 BSP防水电缆接头， 其特征在于： 还包括垫圈 （4)， 所述垫圈 （4) 套设于所述连接区外侧。
5、 根据权利要求 4所述的 BSP防水电缆接头， 其特征在于： 所述垫圈 （4) 与所述塑料主体 （3) 接触的表面周向设置至少一圈密封筋 （40)。
6、 根据权利要求 4或 5所述的 BSP防水电缆接头， 其特征在于： 所述垫圈 （4) 内壁设置有与所述塑料主体 （3) 外螺紋深度适配的支撑部 （41)。
7、 根据权利要求 6所述的 BSP防水电缆接头， 其特征在于： 所述定头（1) 内壁设置有至少一个防退齿（10)， 所述防退齿（10)在紧固时与相邻所述密封齿（3) 之间的空隙配合。
8、 根据权利要求 6所述的 BSP防水电缆接头， 其特征在于：
所述防退齿 （10) 纵向截面的形状为梯形或半圆形或三角形。
PCT/CN2012/083220 2012-04-23 2012-10-19 一种bsp防水电缆接头 WO2013159496A1 (zh)

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