Optical cable end sealing device, stranded optical cable and working method

Abstract

The present invention belongs to the field of cable sealing technology, and specifically relates to a mechanical structure for providing tensile strength and external protection for optical fibers, and more particularly to an optical cable end sealing device, a stranded optical cable, and a working method. The optical cable end sealing device covers and seals the optical cable end through a sealing sleeve, and achieves abutment and covering of the optical cable end through a sealing plate provided in the sealing sleeve. In addition, since the toggle plate provided on the sealing plate can contact the optical cable end before the sealing plate contacts the optical cable end, the loose tube exposed inside the optical cable is toggled, and the cable paste squeezed out by the extrusion strip is applied to the surface of the loose tube. At the same time, as the toggle plate gradually comes close to the optical cable end, it is also gradually pressed from an inclined posture to a parallel state, and finally squeezes the squeezed cable paste onto the surface of the end and flattens itself, thereby achieving sealing of the optical cable end while avoiding loosening of the optical cable end.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable sealing, and specifically relates to a mechanical structure for providing tensile strength and external protection for optical fibers, and more particularly to an optical cable end sealing device, a stranded optical cable, and a working method. Background Art

[0002] Optical cables are cables used for data transmission. They utilize optical fibers as the transmission medium and are primarily composed of optical fibers and a protective layer. They are currently widely used in communications, the internet, and audio and video transmission.

[0003] In the related art, after the production of the optical cable is completed, a sealing device needs to be applied to the end, and a plastic heat shrink cap is usually used as a sealing structure. However, the heat shrink cap can only achieve a waterproof seal for the optical cable. For layer-twisted optical cables, the layer twisting method of the end will become loose or retracted after the end is cut off, which will cause the end to become loose.

[0004] Therefore, there is an urgent need to provide an optical cable end sealing device, a stranded optical cable and a working method to solve the technical problem of loose optical cable ends in the related art.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0006] The embodiment of the present disclosure provides at least one optical cable end sealing device, comprising: a sealing sleeve with an inner diameter the same as the outer diameter of the optical cable; and

[0007] A sealing plate is provided in the sealing sleeve and has a paddle plate on its surface; and

[0008] an extrusion bar disposed on an inner wall of the sealing sleeve, the extrusion bar being configured to rotate and squeeze the end of the optical cable to squeeze a portion of the cable paste out of the end of the optical cable; and

[0009] The toggle piece is configured to toggle the exposed loose tube of the optical cable end and apply the extruded cable paste to the end face of the optical cable end.

[0010] In an optional embodiment, a plurality of receiving grooves are formed on the circumferential surface of the sealing plate;

[0011] The toggle piece is tilted and arranged in the corresponding receiving groove; wherein

[0012] The toggle piece is adapted to be rotated under pressure during the process of rotating and applying the cable paste until it is immersed in the accommodating groove.

[0013] In an optional embodiment, the extrusion strip is arranged obliquely, and the head end of the extrusion strip is close to the opening of the sealing sleeve; and

[0014] The thickness of the extruded strip increases smoothly from its head end to its tail end.

[0015] In an optional embodiment, a through hole is opened in the center of the sealing plate;

[0016] The size of the through hole is compatible with the size of the optical cable strength core.

[0017] The embodiment of the present disclosure also provides at least one layer-twisted optical cable, comprising: a layer-twisted optical cable body and the above-mentioned optical cable end sealing device; wherein

[0018] The optical cable end sealing device is installed at the end of the stranded optical cable body.

[0019] In an optional embodiment, the stranded optical cable body comprises: a cable core and an outer sheath;

[0020] The outer sheath is arranged on the outside of the cable core.

[0021] In an optional embodiment, the cable core includes: a strengthening core and a loose tube;

[0022] The loose tube contains the optical fiber; and

[0023] The loose tube is stranded on the surface of the reinforcing core.

[0024] The embodiment of the present disclosure also provides at least one working method of the optical cable end sealing device, comprising: using the optical cable end sealing device as described above, and

[0025] Rotate the sealing sleeve and insert it onto the end of the optical cable;

[0026] rotating and squeezing the sidewall of the optical cable by means of the squeezing bar to squeeze the cable paste out of the end of the optical cable; and

[0027] Use the toggle piece to move the exposed loose tube at the end of the optical cable, and apply the extruded cable paste to the end face of the optical cable end.

[0028] In an optional embodiment, the extrusion strip is arranged obliquely, and the head end of the extrusion strip is close to the opening of the sealing sleeve; and

[0029] The thickness of the extruded strip increases smoothly from its head end to its tail end.

[0030] In an optional embodiment, a plurality of receiving grooves are formed on the circumferential surface of the sealing plate;

[0031] The toggle piece is tilted and arranged in the corresponding receiving groove; wherein

[0032] The toggle piece is adapted to be rotated under pressure during the process of rotating and applying the cable paste until it is immersed in the accommodating groove.

[0033] The beneficial effects of the present invention are as follows: the optical cable end sealing device covers and seals the optical cable end through the provided sealing sleeve, and achieves abutment and covering of the optical cable end through the sealing plate provided in the sealing sleeve; and, since the toggle piece provided on the sealing plate can contact the optical cable end before the sealing plate contacts the optical cable end, the loose tube exposed inside the optical cable is toggled, and the cable paste squeezed out by the extrusion strip is applied to the surface of the loose tube. At the same time, as the toggle piece gradually comes close to the optical cable end, it is also gradually pressed from an inclined posture to a parallel state, and finally squeezes the squeezed cable paste to the surface of the end and flattens itself, thereby achieving sealing of the optical cable end while avoiding loosening of the optical cable end.

[0034] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of the three-dimensional structure of the optical cable end sealing device provided by an embodiment of the present disclosure is shown;

[0038] Figure 2 A partial structural schematic diagram of an optical cable end sealing device provided by an embodiment of the present disclosure is shown;

[0039] Figure 3 A schematic diagram of the explosion state of the optical cable end sealing device and the stranded optical cable provided by the embodiment of the present disclosure is shown;

[0040] Figure 4 A schematic diagram of the three-dimensional structure of a stranded optical cable provided by an embodiment of the present disclosure is shown.

[0041] In the picture:

[0042] 1. Sealing sleeve; 2. Sealing plate; 21. Paddle; 210. Accommodating groove; 22. Through hole; 3. Extrusion strip; 4. Outer sheath; 5. Cable core; 51. Strengthening core; 52. Loose tube. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe the technical content.

[0045] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0046] See also Figure 1 , Figure 1 The present invention shows a fiber optic cable end sealing device, comprising: a sealing sleeve 1 having an inner diameter identical to an outer diameter of the fiber optic cable; a sealing plate 2 disposed within the sealing sleeve 1 and having a paddle 21 disposed on its surface; and an extrusion strip 3 disposed on the inner wall of the sealing sleeve 1, the extrusion strip 3 being configured to rotate and squeeze the end of the fiber optic cable to squeeze out a portion of the cable paste from the fiber optic cable end; and the paddle 21 being configured to paddle the exposed loose tube 52 at the fiber optic cable end and apply the extruded cable paste to the end face of the fiber optic cable end.

[0047] See also Figure 1 and Figure 2 In some embodiments, the inner diameter of the sealing sleeve 1 is configured to be the same as the outer diameter of the optical cable, thereby achieving the sealing of the optical cable by the sealing sleeve 1. The loose loose tube 52 is re-twisted by the set toggle piece 21. The set extrusion strip 3 squeezes out the cable paste at the end of the optical cable when the sealing sleeve 1 is rotated and inserted, so that the toggle piece 21 applies the extruded cable paste to the cross-section of the optical cable end, achieving further water and gas blocking sealing, and the optical cable is clamped by the extrusion strip 3 so that the sealing sleeve 1 is tightly connected to the optical cable.

[0048] In some embodiments, a plurality of receiving grooves 210 are opened on the circumference of the plate surface of the sealing plate 2; the toggle piece 21 is tilted and arranged in the corresponding receiving groove 210; wherein the toggle piece 21 is suitable for being pressed and rotated during the process of rotating and applying the cable paste until it is immersed in the receiving groove 210.

[0049] See also Figure 3 and Figure 4 As an optional embodiment, the number of the accommodating grooves 210 is preferably 8. The material of the toggle piece 21 includes but is not limited to a flexible material, so that the toggle piece 21 is rotatable. Since the toggle piece 21 is gradually pressed during the process of the sealing sleeve 1 being turned in, the pressing force thereof on the loose tube 52 is gradually increased. Since the toggle piece 21 is spaced and evenly arranged, the toggle of the loose tube 52 is achieved, and the toggle piece 21 is made of a flexible material, thereby avoiding damage to the optical fiber in the loose tube 52. At the same time, the toggle piece 21 is transformed from an inclined posture to a parallel posture in the process of gradually squeezing the loose tube 52, and then accommodated in the accommodating groove 210, so that it is finally in planar contact with the optical cable end. Specifically, the extrusion strip 3 is arranged obliquely, and the head end of the extrusion strip 3 is close to the opening of the sealing sleeve 1; and the thickness of the extrusion strip 3 increases smoothly from its head end to the tail end. And since the sealing sleeve is along Figure 3 and Figure 4 The extrusion strip rotates in the F direction, which is consistent with the twisting direction of the loose tube, and the spiral direction of the extrusion strip is also consistent with this direction, so that the degree of extrusion of the optical cable by the extrusion strip gradually increases as the sealing sleeve goes deeper, so that the extrusion strip 3 can squeeze out the cable paste at the optical cable end and store the cable paste between the sealing plate 2 and the optical cable end. On the one hand, the cable paste avoids direct contact between the toggle piece 21 and the optical cable end, and on the other hand, it is beneficial for this part of the cable paste to further seal the optical cable end.

[0050] In some embodiments, a through hole 22 is provided at the center of the sealing plate 2 ; the size of the through hole 22 matches the size of the optical cable strength core 51 , thereby accommodating the optical cable strength core 51 .

[0051] See also Figure 3 and Figure 4 , Figure 3 and Figure 4 A layer-twisted optical cable is shown, comprising: a layer-twisted optical cable body and the above-mentioned optical cable end sealing device; wherein the optical cable end sealing device is installed at the end of the layer-twisted optical cable body.

[0052] Specifically, the stranded optical cable body comprises a cable core 5 and an outer sheath 4. The outer sheath 4 is disposed on the outside of the cable core 5. The cable core 5 comprises a strength core 51 and a loose tube 52. The loose tube 52 contains optical fibers and is stranded on the surface of the strength core 51.

[0053] On the other hand, the embodiment of the present disclosure also provides at least one working method of an optical cable end sealing device, including: using the above-mentioned optical cable end sealing device, and rotating the sealing sleeve 1 to be inserted into the end of the optical cable; rotating and squeezing the side wall of the optical cable through the extrusion strip 3 to squeeze the cable paste from the end of the optical cable; and moving the exposed loose tube 52 of the optical cable end through the paddle plate 21, and applying the extruded cable paste to the end face of the optical cable end.

[0054] Specifically, the extruded strip 3 is arranged obliquely, and the head end of the extruded strip 3 is close to the opening of the sealing sleeve 1; and the thickness of the extruded strip 3 increases smoothly from the head end to the tail end.

[0055] In some embodiments, a plurality of receiving grooves 210 are opened on the circumference of the plate surface of the sealing plate 2; the toggle piece 21 is tilted and arranged in the corresponding receiving groove 210; wherein the toggle piece 21 is suitable for being pressed and rotated during the process of rotating and applying the cable paste until it is immersed in the receiving groove 210.

[0056] In summary, the optical cable end sealing device covers and seals the optical cable end through the provided sealing sleeve 1, and achieves abutment and covering of the optical cable end through the sealing plate 2 provided in the sealing sleeve 1. Moreover, since the toggle piece 21 provided on the sealing plate 2 can contact the optical cable end before the sealing plate 2 contacts the optical cable end, the loose tube 52 exposed inside the optical cable is toggled, and the cable paste squeezed out by the extrusion strip 3 is applied to the surface of the loose tube 52. At the same time, as the toggle piece 21 gradually comes close to the optical cable end, it is also gradually pressed from an inclined posture to a parallel state, and finally squeezes the squeezed cable paste to the end surface and flattens itself, thereby achieving sealing of the optical cable end while avoiding loosening of the optical cable end.

[0057] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component or a third component may be interposed between the first component and the second component.

[0058] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0059] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0060] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0061] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0062] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0064] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0065] In the above discussion, unless otherwise indicated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0066] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An optical cable end sealing device, characterized in that: include: A sealing sleeve (1) having an inner diameter that is the same as the outer diameter of the optical cable; and A sealing plate (2) is arranged in the sealing sleeve (1), and a paddle (21) is provided on the plate surface; and An extrusion strip (3) is provided on the inner wall of the sealing sleeve (1), and the extrusion strip (3) is configured to rotate and squeeze the end of the optical cable to squeeze out part of the cable paste from the end of the optical cable; in The cable core of the optical cable comprises: a strengthening core (51) and a loose tube (52); The loose tube (52) contains an optical fiber; and The loose tube (52) is twisted on the surface of the reinforcing core (51); A plurality of receiving grooves (210) are formed on the surface of the sealing plate (2) in a circumferential direction; The paddle (21) is tilted and arranged in the corresponding receiving groove (210); wherein The rotation direction of the sealing sleeve is consistent with the twisting direction of the loose tube, and the toggle piece (21) is suitable for being pressed and rotated during the process of rotating and applying the cable paste until it is immersed in the receiving groove (210); that is, The toggle piece (21) is configured to toggle the exposed loose tube (52) at the end of the optical cable while rotating along with the sealing sleeve, and to apply the extruded cable paste to the end surface of the optical cable end.

2. The optical cable end sealing device according to claim 1, wherein: The extrusion strip (3) is arranged at an angle, and the head end of the extrusion strip (3) is close to the opening of the sealing sleeve (1); and The thickness of the extruded strip (3) increases smoothly from its head end to its tail end; wherein The thread direction of the extruded strip is consistent with the twisting direction of the loose tube in the optical cable.

3. The optical cable end sealing device according to claim 2, wherein: A through hole (22) is provided at the center of the sealing plate (2); The size of the through hole (22) is compatible with the size of the optical cable reinforcement core (51).

4. A stranded optical cable, characterized in that: include: A stranded optical cable body and an optical cable end sealing device according to any one of claims 1 to 3; in The optical cable end sealing device is installed at the end of the stranded optical cable body.

5. The stranded optical cable according to claim 4, wherein: The stranded optical cable body comprises: a cable core (5) and an outer sheath (4); The outer sheath (4) is arranged to cover the outside of the cable core (5).

6. The stranded optical cable according to claim 5, wherein: The cable core (5) comprises: a reinforcing core (51) and a loose tube (52); The loose tube (52) contains an optical fiber; and The loose tube (52) is twisted on the surface of the reinforcing core (51).

7. A method for operating an optical cable end sealing device, characterized in that: include: Using the optical cable end sealing device according to any one of claims 1 to 3, and The sealing sleeve (1) is rotated and inserted into the end of the optical cable in a direction consistent with the twisting direction of the loose tube (52); The side wall of the optical cable is squeezed by rotating the squeezing bar (3) to squeeze the cable paste out of the end of the optical cable; as well as The exposed loose tube (52) at the end of the optical cable is moved by a moving piece (21), and the extruded cable paste is applied to the end surface of the optical cable end.

8. The working method according to claim 7, characterized in that: The extrusion strip (3) is arranged at an angle, and the head end of the extrusion strip (3) is close to the opening of the sealing sleeve (1); and The thickness of the extruded strip (3) increases smoothly from its head end to its tail end.

9. The working method according to claim 8, characterized in that: A plurality of receiving grooves (210) are formed on the surface of the sealing plate (2) in a circumferential direction; The paddle (21) is tilted and arranged in the corresponding receiving groove (210); wherein The toggle piece (21) is suitable for being rotated under pressure during the process of rotating and applying the cable paste until it is immersed in the accommodating groove (210).

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