CN113178836A

CN113178836A - Cable sealing joint

Info

Publication number: CN113178836A
Application number: CN202110423729.XA
Authority: CN
Inventors: 周明杰; 陈冬婵
Original assignee: Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Current assignee: Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-27

Abstract

The application provides a cable sealing joint relates to cable connection technical field. The application provides a cable sealing joint, which comprises a connector, a sealing ring, a pressing ring and a locking piece; the connector is provided with a shaft hole, and the hole wall of the shaft hole is provided with a limiting wall which extends inwards along the radial direction of the shaft hole; the sealing ring is sleeved in the shaft hole, the pressing ring and the limiting wall are respectively abutted against two shaft end faces of the sealing ring so as to limit the axial displacement of the sealing ring relative to the shaft hole, the sealing ring is provided with a penetrating cavity which is axially communicated along the sealing ring, and the penetrating cavity is used for penetrating a cable; the retaining member is fixedly sleeved on the connector, the retaining member is provided with a pressing arm extending inwards along the radial direction of the shaft hole, and the pressing arm presses against the pressing ring so that the pressing ring presses against the sealing ring. The application provides a cable sealing joint, because the clamping ring and retaining member's small, light in weight, and simple structure, and then these two parts are easily processed, and the raw and other materials that consume are few, consequently can reduce cable sealing joint's cost.

Description

Cable sealing joint

Technical Field

The application belongs to the technical field of cable connection, and more specifically relates to a cable sealing joint.

Background

After the cables are laid, the individual sections of cables must be connected together in order to form a continuous line, the connection points being referred to as cable connectors. The cable joint is used for locking and fixing the incoming and outgoing lines so as to play roles in water resistance, dust resistance and vibration resistance. Among them, the cable joint at the middle portion of the cable line is called an intermediate joint, and the cable joints at both ends of the cable line are called terminal joints.

In the prior art, the cable joint mostly adopts the combination mode of gland nut and gasket, utilizes the elasticity of gasket, compresses tightly the gasket through gland nut, and then locks the sealing washer in the connector to the cable that the sealed treating is connected. However, the gland nut has a large volume, a heavy weight, a high processing difficulty, and a large amount of raw materials, so that the cost of the cable joint is high.

Disclosure of Invention

An object of the embodiment of this application is to provide a cable sealing joint to solve the technical problem that the cost of the cable joint that exists among the prior art is with high costs.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a cable sealing joint, wherein the cable sealing joint comprises a connector, a sealing ring, a pressing ring and a locking piece;

the connector is provided with a shaft hole, and the hole wall of the shaft hole is provided with a limiting wall which extends inwards along the radial direction of the shaft hole; the sealing ring is sleeved in the shaft hole, the pressing ring and the limiting wall are respectively abutted against two shaft end faces of the sealing ring so as to limit axial displacement of the sealing ring relative to the shaft hole, the sealing ring is provided with a penetrating cavity which is axially communicated with the sealing ring, and the penetrating cavity is used for penetrating a cable;

the retaining member is fixed connect in the connector, the retaining member has the edge the radial inside support pressure arm that extends in the shaft hole, support pressure arm support press in the clamping ring, so that the clamping ring support by in the sealing washer.

In one embodiment, the end surface of the pressing ring close to the sealing ring comprises a flat end surface and a conical wall surface, the conical wall surface is connected to the flat end surface, and the conical wall surface is positioned on the inner side of the flat end surface;

the sealing ring is arranged in the shaft hole, the tapered wall surface is gradually close to the axis of the shaft hole in the direction of the pressing ring, and the end part of the sealing ring is extruded in a tapered space surrounded by the tapered wall surface.

In an embodiment, a stepped structure is disposed at an end portion of the pressing ring away from the sealing ring, the stepped structure includes a first stepped surface and a second stepped surface which are angled, a side wall surface of the pressing arm presses against the first stepped surface, and an end wall surface of the pressing arm presses against the second stepped surface.

In one embodiment, the side wall surface of the pressing arm presses against the end surface of the pressing ring far away from the sealing ring.

In one embodiment, the pressing arm and the pressing ring are both provided with a step structure, and the pressing arm and the pressing ring are connected in a pressing mode through two step structures.

In one embodiment, the retaining member comprises a locking sleeve, one end of the locking sleeve is fixedly sleeved on the connector, the abutting arm is vertically connected to the other end of the locking sleeve, and the outer diameter of the pressing ring is smaller than the inner diameter of the locking sleeve.

In one embodiment, the inner diameter of the pressing ring is smaller than the inner diameter of the sealing ring.

In one embodiment, the locking member is sleeved on the connector in a threaded manner.

In one embodiment, the cross section of the locking member is in two opposite L-shaped structures.

In one embodiment, the connector, the sealing ring, the pressing ring and the locking member) are coaxially arranged.

The application provides a cable sealing joint's beneficial effect lies in:

compared with the prior art, the cable sealing joint provided by the application uses the clamping ring and the locking piece to replace a compression nut in the prior art, and the arrangement of the elastic gasket is omitted. The clamping ring and the limiting wall are respectively abutted against two axial end faces of the sealing ring to limit axial displacement of the sealing ring relative to the axial hole, and the locking piece is abutted against the clamping ring through the abutting arm which the locking piece has, so that the clamping ring is always abutted against the sealing ring. Because the clamping ring and the locking piece are small in size, light in weight and simple in structure, the two parts are easy to process, and consumed raw materials are few, so that the manufacturing cost of the cable sealing joint can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of a cable sealing joint provided by an embodiment of the present application;

fig. 2 is a sectional view taken along the line a-a of fig. 1.

Wherein, in the figures, the respective reference numerals:

100. a cable sealing joint;

10. a connector; 20. a seal ring; 30. pressing a ring; 40. a locking member;

101. a shaft hole; 102. a limiting wall;

201. the cavity is penetrated;

301. a flat end face; 302. a tapered wall surface; 303. a conical space; 304. a step structure; 304a, a first step surface; 304b, a second step surface;

401. a locking sleeve; 402. a pressing arm; 402a, a side wall surface; 402b, end wall surfaces.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The cable sealing joint 100 provided by the embodiment of the present application will now be described.

Referring to fig. 1 and 2, a cable sealing connector 100 according to an embodiment of the present disclosure includes a connector 10, a sealing ring 20, a pressing ring 30, and a locking member 40.

The connector 10 is provided with a shaft hole 101, and the hole wall of the shaft hole 101 is provided with a limiting wall 102 extending inwards along the radial direction of the shaft hole; the sealing ring 20 is sleeved in the shaft hole 101, the pressing ring 30 and the limiting wall 102 are respectively abutted against two shaft end faces of the sealing ring 20 to limit axial displacement of the sealing ring 20 relative to the shaft hole 101, the sealing ring 20 is provided with a through cavity 201 which penetrates through along the axial direction of the sealing ring 20, and the through cavity 201 is used for allowing a cable to penetrate through;

the retaining member 40 is fixedly sleeved on the connector 10, the retaining member 40 has a pressing arm 402 extending radially inward along the shaft hole 101, and the pressing arm 402 presses against the pressing ring 30, so that the pressing ring 30 presses against the sealing ring 20.

The cable sealing joint 100 provided by the embodiment of the application has the beneficial effects that:

in contrast to the prior art, the cable sealing joint 100 provided by the present application uses the pressing ring 30 and the locking member 40 instead of the pressing nut of the prior art, and eliminates the provision of the elastic washer. The pressing ring 30 and the limiting wall 102 respectively abut against two axial end faces of the sealing ring 20 to limit axial displacement of the sealing ring 20 relative to the axial hole 101, and the locking member 40 abuts against the pressing ring 30 through the abutting arm 402, so that the pressing ring 30 always abuts against the sealing ring 20. Since the pressing ring 30 and the locker 40 have small volume, light weight, and simple structure, and thus the two parts are easily processed, the consumed raw material is small, and thus the manufacturing cost of the cable sealing terminal 100 can be reduced.

In this embodiment, the connecting head 10 is a rigid member. As shown in fig. 2, the coupling head 10 has a shaft hole 101 extending in an axial direction thereof, and the shaft hole 101 provides a mounting space for other components except the coupling head 10 and the locker 40, and the shaft hole 101 is designed to have a variety of different diameters in order to be adapted to the radial dimension of the other components and to be restricted by the difference in the radial dimension of the shaft hole 101. That is, the radial dimension of the shaft hole 101 at different stages is variable along the axial direction of the shaft hole 101.

As shown in fig. 2, in the region where the seal ring 20 and a part of the pressing ring 30 are attached, the inner diameter of the shaft hole 101 is kept constant so that the outer diameter surface of the pressing ring 30 and the outer diameter surface of the seal ring 20 are kept on the same horizontal line, and the pressing ring 30 can more preferably apply a pressing force to the seal ring 20 by a flat end surface 301 described below, so that the outer diameter surface of the seal ring 20 and the inner circumferential wall of the shaft hole 101 are kept well sealed.

As shown in fig. 2, the shaft hole 101 is designed in a stepped shape on the other side opposite to the pressing ring 30 in the axial direction of the shaft hole 101, so that the mounting part on the other side is mounted or positioned by the reducing design of the shaft hole 101.

In this embodiment, when the cable sealing joint 100 provided in the embodiment of the present application is applied to two ends of a cable line, that is, to a terminal, the joint 10 can be designed to be a closed end along the axial direction of the shaft hole 101 and the other side opposite to the pressing ring 30, that is, the shaft hole 101 is designed to be a blind hole.

In this embodiment, when the cable sealing joint 100 provided in the embodiment of the present application is applied to the middle portion of a cable line, that is, to an intermediate joint, along the axial direction of the shaft hole 101, on the other side opposite to the pressing ring 30, the connecting joint 10 may be designed to pass through the shaft hole 101 as shown in the figure, that is, the shaft hole 101 is designed to be a through hole.

In the embodiment of the present application, the sealing ring 20 has a certain length, the length of the sealing ring 20 extends along the axial direction of the shaft hole 101, and the sealing ring 20 has a certain thickness, so that the pressing stability of the pressing ring 30 and the end surface of the sealing ring 20 can be utilized on the basis of ensuring the sealing performance.

In the embodiment of the present application, the pressing ring 30 is a rigid member. In one embodiment, an end surface of the pressing ring 30 close to the sealing ring 20 includes a flat end surface 301 and a tapered wall surface 302, the tapered wall surface 302 is connected to the flat end surface 301, and the tapered wall surface 302 is located inside the flat end surface 301; the tapered wall surface 302 is gradually closer to the axis of the shaft hole 101 in the direction from the seal ring 20 toward the pressing ring 30, and a part of the end of the seal ring 20 is pressed into a tapered space 303 surrounded by the tapered wall surface 302.

The flat end surface 301 refers to a common end surface perpendicular to the axis of the shaft hole 101, the flat end surface 301 and the end surface of the seal ring 20 are attached and pressed against each other, the attachment surfaces of the flat end surface 301 and the end surface of the seal ring 20 are also perpendicular to the axis of the shaft hole 101, and the pressing ring 30 transmits the pressing force to the seal ring 20 through the flat end surface 301. The wall surface of the stopper wall 102 is preferably perpendicular to the axis of the shaft hole 101, and the wall surface of the stopper wall 102 is in contact with the other end surface of the seal ring 20, so that both the pressing ring 30 and the stopper wall 102 apply pressing forces to both axial end surfaces of the seal ring 20 along the axis of the shaft hole 101, respectively, so that the seal ring 20 is positioned inside the shaft hole 101.

Of course, in other embodiments, the wall surface of the above-mentioned limiting wall 102 may be designed to form an acute angle with the axis of the shaft hole 101, or an obtuse angle with the axis of the shaft hole 101, and the purpose of positioning the sealing ring 20 along the axial direction of the shaft hole 101 may also be achieved.

In this embodiment, the end surface of the pressing ring 30 close to the sealing ring 20 is designed to include a flat end surface 301 and a tapered wall surface 302, so that, on one hand, when the pressing ring is installed, the positioning can be performed quickly, the pressing ring 30 can be pressed against the sealing ring 20 quickly, and the problem that the pressing ring 30 is sprung outwards by the resilience of the sealing ring 20 when the sealing ring 20 is extruded, and thus the installation is difficult is solved; on the other hand, the compressed sealing ring 20, which is close to the end of the pressing ring 30, has a part of the end portion filled into the tapered space 303 formed by the tapered wall 302 along the tapered wall 302, so that the sealing performance can be effectively improved, and the sealing performance of the cable sealing joint 100 provided by the present application can easily reach the grade of IP54 or above.

In other embodiments, the end surface of the pressing ring 30 close to the sealing ring 20 may be a flat end surface 301, that is, the end surface of the pressing ring 30 close to the sealing ring 20 is a common end surface, and the whole area of the end surface is attached to the whole area of one of the end surfaces of the sealing ring 20.

In the embodiment of the present application, it is preferred that the inner diameter of clamping ring 30 is less than the inner diameter of sealing washer 20, and after the installation, the certain clearance in the internal perisporium of clamping ring 30 and the periphery wall interval of cable prevents to produce between the two and interferes, also is not influenced for guaranteeing sealing performance of sealing washer 20, and then provides the stability of sealing performance.

In the first embodiment, the end of the pressing ring 30 away from the sealing ring 20 is provided with a step structure 304, the step structure 304 includes a first step surface 304a and a second step surface 304b which are angled, the side wall surface 402a of the pressing arm 402 presses against the first step surface 304a, and the end wall surface 402b of the pressing arm 402 presses against the second step surface 304 b.

The pressing arm 402 is preferably perpendicular to the locking sleeve 401, and a sidewall surface 402a of the pressing arm 402 is preferably perpendicular to an end wall surface 402b of the pressing arm 402, and a first step surface 304a is preferably perpendicular to a second step surface 304b, so that the end of the pressing arm 402 can be just fitted to the step structure 304 of the pressing ring 30, and the pressing arm 402 not only limits the axial displacement of the pressing ring 30, but also limits the radial displacement of the pressing ring 30.

In the second embodiment, the side wall surface 402a of the pressing arm 402 presses against the end surface of the pressing ring 30 away from the sealing ring 20. In the second embodiment, the pressing arm 402 limits the axial displacement of the pressing ring 30, and in this case, it is preferable that the outer diameter surface of the pressing ring 30 is fitted to the inner diameter surface of the locking sleeve 401, which will be described below, and the radial displacement of the pressing ring 30 is limited by the inner diameter surface of the locking sleeve 401.

In the third embodiment, the pressing arm 402 and the pressing ring 30 are both provided with a step structure 304, and the pressing arm 402 and the pressing ring 30 are connected in a pressing manner through two step structures 304. For example, the pressing ring 30 is provided with the step structure 304 as in the first embodiment, the pressing arm 402 is provided with the step structure 304 having the same structure, the openings of the two step structures 304 are opposite, the two steps are adapted and just accommodated, so that the pressing arm 402 and the pressing ring 30 are pressed against each other, and the pressing arm 402 not only limits the axial displacement of the pressing ring 30, but also limits the radial displacement of the pressing ring 30.

In one embodiment, the locking member 40 includes a locking sleeve 401, one end of the locking sleeve 401 is fixedly sleeved on the connector 10, and the pressing arm 402 is perpendicularly connected to the other end of the locking sleeve 401. in the first and third embodiments, the outer diameter of the pressing ring 30 is smaller than the inner diameter of the locking sleeve 401, and a gap exists between the pressing ring and the locking sleeve to prevent the locking sleeve 401 from interfering with the pressing ring 30 when rotating relative to the connector 10.

In the embodiment of the present application, it is preferable that the locking member 40 is threadedly engaged with the connector 10. Specifically, an internal thread or an external thread may be provided on the locking sleeve 401 at an end far from the pressing arm 402, an external thread or an internal thread may be provided on the connector 10 at an end near the pressing ring 30, and the locking sleeve 401 and the connector 10 are connected by the internal and external threads.

In this embodiment, it is preferable that the locking sleeve 401 has an internal thread and the connector 10 has an external thread.

In other embodiments, the locking sleeve 401 and the connector 10 can be connected by other mechanical quick release structures in a quick release manner, and since the rotary joint type mechanical quick release structure belongs to the well-known technology in the mechanical field, it is not described herein again.

In the embodiment of the present application, it is preferable that the locking member 40 is an integrally formed structure, and the cross section of the locking member 40 is formed in two opposite L-shaped structures.

In the embodiment of the present application, the connector 10, the sealing ring 20, the pressing ring 30, and the locking member 40 are coaxially disposed. Of course, the seal ring 20 and the pressing ring 30 are eccentrically disposed.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable sealing joint (100), characterized by:

comprises a connector (10), a sealing ring (20), a pressing ring (30) and a locking piece (40);

the connector (10) is provided with a shaft hole (101), and the shaft hole wall of the shaft hole (101) is provided with a limiting wall (102) extending inwards along the radial direction of the shaft hole; the sealing ring (20) is sleeved in the shaft hole (101), the pressing ring (30) and the limiting wall (102) are respectively abutted against two shaft end faces of the sealing ring (20) to limit axial displacement of the sealing ring (20) relative to the shaft hole (101), the sealing ring (20) is provided with a penetrating cavity (201) which penetrates through along the axial direction of the sealing ring, and the penetrating cavity (201) is used for penetrating a cable;

retaining member (40) are fixed cup joint in connector (10), retaining member (40) have along the radial inside of shaft hole (101) extends support arm (402), support arm (402) support press in clamping ring (30), so that clamping ring (30) support lean on in sealing washer (20).

2. The cable sealing joint (100) of claim 1, wherein:

the end face, close to the sealing ring (20), of the pressing ring (30) comprises a flat end face (301) and a conical wall face (302), the conical wall face (302) is connected to the flat end face (301), and the conical wall face (302) is located on the inner side of the flat end face (301);

from the direction of sealing washer (20) to clamping ring (30), tapered wall (302) is close to the axis of shaft hole (101) gradually, and partial tip of sealing washer (20) is extrudeed in tapered space (303) that tapered wall (302) encloses.

3. The cable sealing joint (100) according to claim 1 or 2, wherein: the end part, far away from the sealing ring (20), of the pressing ring (30) is provided with a step structure (304), the step structure (304) comprises a first step surface (304a) and a second step surface (304b) which are angled, the side wall surface (402a) of the pressing arm (402) is pressed against the first step surface (304a), and the end wall surface (402b) of the pressing arm (402) is pressed against the second step surface (304 b).

4. The cable sealing joint (100) according to claim 1 or 2, wherein: the side wall surface (402a) of the pressing arm (402) presses against the end surface, far away from the sealing ring (20), of the pressing ring (30).

5. The cable sealing joint (100) according to claim 1 or 2, wherein: step structures (304) are arranged on the pressing arm (402) and the pressing ring (30), and the pressing arm (402) and the pressing ring (30) are connected in a pressing mode through the two step structures (304).

6. The cable sealing joint (100) according to claim 1 or 2, wherein: retaining member (40) include lock sleeve (401), the fixed cup of one end of lock sleeve (401) connect in connector (10), support pressing arm (402) connect perpendicularly in the other end of lock sleeve (401), the external diameter size of clamping ring (30) is less than the internal diameter size of lock sleeve (401).

7. The cable sealing joint (100) according to claim 1 or 2, wherein: the inner diameter of the pressing ring (30) is smaller than that of the sealing ring (20).

8. The cable sealing joint (100) according to claim 1 or 2, wherein: the locking piece (40) is sleeved on the connector (10) in a threaded manner.

9. The cable sealing joint (100) of claim 8, wherein: the cross section of the locking piece (40) is in two opposite L-shaped structures.

10. The cable sealing joint (100) according to claim 1 or 2, wherein: the connector (10), sealing washer (20) clamping ring (30) retaining member (40) coaxial setting.