CN113109909A

CN113109909A - Angle-restraining type anti-bending sheath for optical cable

Info

Publication number: CN113109909A
Application number: CN202110073721.5A
Authority: CN
Inventors: 李泽兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-07-13

Abstract

The invention discloses an angle-suppressing type anti-bending sheath for an optical cable, which belongs to the field of optical cable sheaths and comprises a plurality of sheath sections sleeved at the outer end of the optical cable and a plurality of angle-suppressing rings fixedly connected between the end parts of two adjacent sheath sections, wherein through the arrangement of the sheath sections and the angle-suppressing rings, when the optical cable is bent, on one hand, torsion at a certain angle can be generated to achieve the effect of dispersion force to protect the optical cable and effectively prolong the service life of the optical cable, on the other hand, a bending point is automatically transferred to the upper end part of the angle-suppressing rings, under the effect of bending force, deionized water extrudes a magnetic repulsion chain through an elastic diaphragm to reduce the distance between a plurality of mutually exclusive magnetic balls or even extrude and contact the mutually exclusive magnetic balls, and the transversely changed contact balls are stressed to transversely extend to mutually press the plurality of transversely changed contact balls, at the moment, the hardness of the lower end parts of the angle-suppressing rings is increased, so that the effect of, the optical cable is effectively protected from being damaged easily.

Description

Angle-restraining type anti-bending sheath for optical cable

Technical Field

The invention relates to the field of optical cable sheaths, in particular to an angle-suppressing type anti-bending sheath for an optical cable.

Background

Optical fibers are short for optical fibers, and are fibers made of glass or plastic that can be used as a light conducting means. The principle of transmission is "total reflection of light". The fine optical fiber is enclosed in a plastic sheath so that it can be bent without breaking. Generally, a Light Emitting Diode (LED) or a laser beam is used as a transmitter at one end of the optical fiber to transmit an optical pulse to the optical fiber, and a photosensor is used as a receiver at the other end of the optical fiber to detect the pulse. In daily life, optical fibers are used for long distance information transmission because the loss of light transmitted through optical fibers is much lower than the loss of electricity transmitted through electric wires.

In general, the terms optical fiber and optical cable are to be confused. Most optical fibers must be covered by several layers of protective structures before use, and the covered cables are referred to as fiber optic cables. The protective layer and the insulating layer on the outer layer of the optical fiber can prevent the surrounding environment from damaging the optical fiber, such as water, fire, electric shock and the like.

The optical cable is divided into: cable sheath, aramid fiber silk, buffer layer and optic fibre. Optical fibers are similar to coaxial cables except that the mesh shielding is absent. The center is the glass core through which the light propagates. In the multimode optical fiber, the core diameter is 50 μm and 62.5 μm, which are approximately equivalent to the thickness of human hair. Whereas the diameter of the single-mode optical fiber core is 8 μm to 10 μm, 9/125 μm is commonly used. The core is surrounded by a glass envelope, commonly referred to as a cladding, of lower refractive index than the core, which keeps the light rays within the core. Further on the outside is a thin plastic outer jacket, i.e. a coating, for protecting the cladding. The optical fibers are typically bundled and protected by an outer jacket.

The core is typically a double-walled concentric cylinder of small cross-sectional area made of quartz glass, which is brittle and easily broken. Although the surface of the optical cable is wrapped with protective layers such as cable sheath, aramid fiber yarn and buffer layer, when the optical cable is subjected to bending force from the outside, local stress is too concentrated and overlarge, the fiber core at the stress position is easy to crack, and the service life of the optical cable is short.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an angle-suppressing type anti-bending sheath for an optical cable, which can generate torsion at a certain angle to achieve the effect of dispersion and the effect of protecting the optical cable by arranging a sheath section and an angle-suppressing ring when the sheath is bent, so that the service life of the optical cable is effectively prolonged, and the bending point is automatically transferred to the upper end part of the angle-suppressing ring.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides an optical cable is with hindering anti sheath of buckling of angle formula, includes that the cover establishes a plurality of sheath sections and a plurality of fixed connection who establishes in cable outer end and hinders the angle ring between two adjacent sheath section tip, it has the oval chamber to hinder angle ring upper end middle part chisel, it has hard chamber of changing to hinder angle ring lower tip chisel, it has a plurality of evenly distributed's linear ring chamber to hinder angle ring middle part chisel, it communicates with each other through linear ring chamber to go up oval chamber and hard chamber of changing, linear ring chamber middle part fixed connection has the elasticity diaphragm, linear ring chamber and last oval intracavity packing above the elasticity diaphragm have deionized water, the magnetism repellent chain has been placed in the linear ring chamber of elasticity diaphragm below, the interior fixed connection of hard chamber has a plurality of horizontal change that correspond with the magnetism repellent chain to touch the ball, through the setting of sheath section and angle ring, when buckling, on the one hand, can take place the torsion of certain angle, reaches the effect of dispersion, reach the effect of protection optical cable, effectively prolong the life of optical cable, on the other hand makes the bending point automatic transfer to presses down angle ring upper end department, under the bending force effect, deionized water passes through elastic diaphragm extrusion magnetism repulsion chain, make between a plurality of mutual exclusion magnetic balls apart from diminishing or even extrusion contact, and violently become to touch ball atress horizontal extension, make a plurality of violently become to touch the ball mutual pressure, press down tip hardness grow under the angle ring this moment, thereby reach the restriction and press down the effect that angle ring and its inside optical cable continue to buckle, effective protection optical cable is difficult for being damaged.

Further, adjacent two angle difference of angle ring in vertical direction is 15-20 for when a plurality of sheath sections parcel is outside the optical cable, under the effect of angle ring, the optical cable can take place the torsion of certain angle when buckling, reaches the effect of dispersion, thereby effectively reduces the power of buckling, thereby under the effect of the same bending force, the optical cable angle of buckling is compared in the angle ring that presses down of equidirectional, can be less relatively, reaches the effect of protection optical cable, effectively prolongs the life of optical cable.

Furthermore, the upper end part of the angle suppression ring is of a wavy corrugated structure, the lower end part of the angle suppression ring is of a straight structure, so that the upper end part of the angle suppression ring can deform to a certain extent when being bent, the bending angle of the straight structure is limited, when the optical cable is bent, the bending point is automatically transferred to the upper end part of the angle suppression ring, deionized water is extruded to flow towards the lower end part when being bent, the magnetic repulsion chains are extruded, the distance between the plurality of mutually exclusive magnetic balls is reduced or even extruded and contacted, the transverse variable contact balls are stressed to transversely extend, so that the plurality of transverse variable contact balls are mutually abutted, the hardness of the lower end part of the angle suppression ring is increased, the effect of limiting the angle suppression ring and the optical cable inside the angle suppression ring to be continuously bent is achieved, the angle suppression ring is effectively protected from being damaged, the angle suppression ring is made of an elastic material, the angle suppression ring is integrally elastic, and when the optical cable is bent, an adaptive angular change occurs.

Furthermore, the vertical span of the corrugated structure of the angle suppression ring is larger than the radius of the angle suppression ring, and the vertical span ratio of the corrugated structure to the straight structure is 2-3:1, so that the angle suppression ring can adapt to the deformation of the optical cable in the normal range, such as the deformation during bending transportation.

Furthermore, the magnetic repulsion chain comprises a plurality of mutually exclusive magnetic balls and a limiting rope fixedly connected between two adjacent mutually exclusive magnetic balls, and the limiting rope is also connected between the transverse variable contact ball and the lowermost mutually exclusive magnetic ball.

Furthermore, the magnetic blocks are embedded in the mutual exclusion magnetic balls and at the upper ends of the transverse contact balls, and the magnetic poles of two adjacent magnetic blocks at one ends close to each other are the same, so that repulsive force exists between the two adjacent mutual exclusion magnetic balls, and meanwhile repulsive force also exists between the lowermost transverse contact ball and the adjacent mutual exclusion magnetic ball.

Furthermore, the limiting rope is made of non-elastic materials and is in a loose state, the limiting rope effectively limits the position of the mutual exclusion magnetic ball, so that the mutual exclusion magnetic ball is not easy to change when moving in a linear annular cavity, repulsion force is always generated between two adjacent mutual exclusion magnetic balls, when bending is not generated or the bending angle is small, a certain distance is generated between two adjacent mutual exclusion magnetic balls, and the bending of the optical cable in a normal range is not easily influenced by the angle suppression ring.

Furthermore, violently become to touch the ball and be elasticity hollow structure, and violently become to touch ball internal saturation and fill and have the liquid that mobility is strong, when being convenient for receive the extrusion force, liquid can pass interior welt fast to concentrate on the middle part, be convenient for violently become to touch the ball and extend outward fast

Further, the thickness of the horizontal middle part of horizontal change contact ball is 3-4 times of the thickness of the rest part, and the vertical span of horizontal middle part is not more than 1/3 of horizontal change contact ball diameter, during the bending, horizontal change contact ball receives the extrusion force in vertical direction, makes horizontal change contact ball lateral extension, the middle part that is thicker this moment outwards extends to can contact with adjacent horizontal change contact ball, make a plurality of horizontal change contact balls become an organic whole, thereby make intensity and the hardness increase of the tip under the angle ring that presses down, thereby reach the effect of restriction angle of buckling.

Further, the inside fixedly connected with of violently becoming touches ball interior lining board of two symmetries, two lining board is located the upper and lower both sides at horizontal middle part respectively, and lining board can regard as violently becoming to touch the inside lining of ball, and it is when receiving the extrusion force, when taking place horizontal extension back, violently become to touch by longitudinal extrusion between the ball, and two lining boards are supported in inside this moment, improve hardness on the one hand, and on the other hand effectively protects violently to touch the ball and is difficult to be flattened, and it resumes original shape to make and press down the effect that the angle ring can realize restriction optical cable angle of buckling many times.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through the sheath section and the setting of angle ring of pressing down, when buckling, on the one hand, the torsion of certain angle can take place, reach the effect of dispersion, reach the effect of protection optical cable, effectively prolong the life of optical cable, on the other hand makes the bending point automatic transfer to press down angle ring upper end department, under the effect of bending force, the deionized water passes through elastic diaphragm extrusion magnetism repulsion chain, make between a plurality of mutual exclusion magnetic balls apart from diminishing or even extrusion contact, and violently become the horizontal extension of ball atress, make a plurality of violently change and touch the ball and support each other and press, press down tip hardness grow under the angle ring this moment, thereby reach the restriction and press down the effect that angle ring and its inside optical cable continue to buckle, effective protection optical cable is difficult to be damaged.

(2) The angle difference of two adjacent angle restraining rings in the vertical direction is 15-20 degrees, so that when a plurality of sheath sections are wrapped outside the optical cable, under the effect of the angle restraining rings, the optical cable can be twisted at a certain angle when being bent, the effect of dispersion is achieved, the bending force is effectively reduced, and under the same bending force effect, the bending angle of the optical cable is smaller than the angle restraining rings in the same direction, so that the effect of protecting the optical cable is achieved, and the service life of the optical cable is effectively prolonged.

(3) The upper end part of the angle suppression ring is of an undulating corrugated structure, the lower end part of the angle suppression ring is of a straight structure, so that the upper end part of the angle suppression ring can deform to a certain extent when being bent, the bending angle of the straight structure is limited, so that when the optical cable is bent, the bending point is automatically transferred to the upper end part of the angle suppression ring, when the magnetic repulsion chain is bent, the deionized water flows towards the lower end part under the extrusion, so that the magnetic repulsion chain is extruded, the distance between the plurality of magnetic repulsion balls is reduced, even the magnetic repulsion chains are in extrusion contact, the transverse variable contact balls are stressed to extend transversely, so that the plurality of transverse variable contact balls are pressed against each other, the hardness of the lower end part of the angle suppression ring is increased, thereby achieving the effect of limiting the angle suppression ring and the continuous bending of the optical cable inside the angle suppression ring, effectively protecting the optical cable from being damaged easily, and the angle suppression ring is made of elastic materials, so that the angle suppression ring has elasticity as a whole and can generate adaptive angle change when the optical cable is bent.

(4) The vertical span of the corrugated structure of the angle suppression ring is larger than the radius of the angle suppression ring, and the vertical span ratio of the corrugated structure to the straight structure is 2-3:1, so that the angle suppression ring can adapt to the deformation of the optical cable in the normal range, such as the deformation during bending transportation.

(5) The magnetic repulsion chain comprises a plurality of mutually exclusive magnetic balls and limiting ropes fixedly connected between two adjacent mutually exclusive magnetic balls, and the limiting ropes are also connected between the transverse variable contact ball and the lowermost mutually exclusive magnetic ball.

(6) Inside and horizontal change of mutual exclusion magnetic ball contact ball upper end portion all inlays and has the magnetic path, and the one end magnetic pole that two adjacent magnetic paths are close to each other is the same, there is the repulsion force between two adjacent mutual exclusion magnetic balls, there is the repulsion force between the horizontal change of the simultaneous bottom touches the ball and also exists between the adjacent mutual exclusion magnetic ball, when taking place to buckle, pass through elastic diaphragm extrusion magnetism repulsion chain during the deionization, thereby make and press down tip hardness and intensity higher under the angle ring, thereby reach the effect of restraining the optical cable angle of buckling, effective protection optical cable is difficult for damaging because of the angle of buckling is too big.

(7) The limiting rope is made of non-elastic materials and is in a loose state, the limiting rope effectively limits the positions of the mutual exclusion magnetic balls, the mutual exclusion magnetic balls are not prone to change when moving in the annular linear cavity, accordingly, repulsion force exists between every two adjacent mutual exclusion magnetic balls all the time, when bending does not occur or the bending angle is small, a certain distance exists between every two adjacent mutual exclusion magnetic balls, and therefore the angle restraining ring is not prone to influence bending of the optical cable in a normal range.

(8) Violently become to touch the ball and be elasticity hollow structure, and violently become to touch ball inner saturation and fill and have liquid that mobility is strong, when being convenient for receive the extrusion force, liquid can pass interior welt fast to concentrate on the middle part, be convenient for violently become to touch the ball and outwards extend fast

(9) The thickness that violently becomes the horizontal middle part of ball is 3-4 times of rest part thickness, and the vertical span at horizontal middle part is not more than the 1/3 that violently becomes the ball diameter of touching, during buckling, violently becomes to touch the ball and receives the extrusion force in vertical direction, makes violently become to touch the ball and transversely extends, the middle part outside extension that is thicker this moment to can touch with adjacent violently becoming to touch the ball, make a plurality of violently become to touch spherical one-tenth integratively, thereby make intensity and the hardness increase of tip under the angle ring that presses down, thereby reach the effect of restriction angle of buckling.

(10) The interior welt of two symmetries of violently becoming touch ball inside fixedly connected with, two welts are located the upper and lower both sides at horizontal middle part respectively, welt can regard as violently becoming the inside lining of touching the ball, it is when receiving the extrusion force, after taking place horizontal extension, violently become to touch by vertical extrusion between the ball, two welts are supported in inside this moment, on the one hand improve hardness, on the other hand effectively protects violently to become to touch the ball and is difficult for being flattened, it resumes former shape to be convenient for it, thereby make and press down the effect that the angle ring can realize the restriction optical cable angle of buckling many times.

Drawings

FIG. 1 is a schematic structural view of a front portion of the optical cable of the present invention when sleeved thereon;

FIG. 2 is a schematic front view of a portion of the diaphragm of the present invention;

FIG. 3 is a schematic perspective view of the angle suppressing ring of the present invention;

FIG. 4 is a schematic structural view of a front cross section of a suppressor ring according to the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic side view cross-sectional structure of the present invention;

FIG. 7 is a schematic view of a variation structure of an angle between two adjacent angle suppressing rings according to the present invention;

FIG. 8 is a cross sectional view of a variable contact ball according to the present invention.

The reference numbers in the figures illustrate:

1 cable, 2 sheath sections, 3 angle-suppressing rings, 41 upper oval cavities, 42 linear ring cavities, 43 hard variable cavities, 51 mutual-exclusion magnetic balls, 52 transverse variable contact balls, 6 elastic diaphragms, 7 inner lining plates and 8 limiting ropes.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, an angle-suppressing type anti-bending sheath for an optical cable comprises a plurality of sheath sections 2 sleeved at the outer end of the optical cable 1 and a plurality of angle-suppressing rings 3 fixedly connected between the end portions of two adjacent sheath sections 2, referring to fig. 7, the angle difference of two adjacent angle-suppressing rings 3 in the vertical direction is 15-20 degrees, so that when the plurality of sheath sections 2 are wrapped outside the optical cable, the optical cable can be twisted at a certain angle to achieve the effect of dispersion force under the action of the angle-suppressing rings 3 when being bent, thereby effectively reducing the bending force, and therefore, under the action of the same bending force, the bending angle of the optical cable is smaller than that of the angle-suppressing rings 3 in the same direction, thereby achieving the effect of protecting the optical cable and effectively prolonging the service life of the optical cable.

Referring to fig. 4 and 6, an upper elliptical cavity 41 is formed in the middle of the upper end of the angle-suppressing ring 3, a hard variable cavity 43 is formed in the lower end of the angle-suppressing ring 3, a plurality of linear annular cavities 42 are uniformly formed in the middle of the angle-suppressing ring 3, the upper elliptical cavity 41 and the hard variable cavity 43 are communicated through the linear annular cavities 42, referring to fig. 5, an elastic diaphragm 6 is fixedly connected to the middle of the linear annular cavities 42, the linear annular cavities 42 and the upper elliptical cavities 41 above the elastic diaphragm 6 are filled with deionized water, the upper end of the angle-suppressing ring 3 is of a wavy corrugated structure, the lower end of the angle-suppressing ring 3 is of a straight structure, so that the upper end of the angle-suppressing ring 3 can be deformed to a certain extent when being bent, and the bending angle of the straight structure is limited, so that when the optical cable is bent, the bending point is automatically transferred to the upper end of the angle-suppressing ring 3, and when being bent, the deionized water is squeezed, flows toward the lower, the distance between the plurality of mutually exclusive magnetic balls 51 is reduced, even the balls are in extrusion contact, the transverse variable contact balls 52 are stressed to extend transversely, the plurality of transverse variable contact balls 52 are pressed against each other, the hardness of the lower end part of the angle restraining ring 3 is increased at the moment, so that the effect of limiting the angle restraining ring 3 and the optical cable inside the angle restraining ring 3 to be bent is achieved, the optical cable is effectively protected from being damaged, the angle restraining ring 3 is made of elastic materials, the angle restraining ring 3 is elastic as a whole, adaptive angle change can be generated when the optical cable is bent, the vertical span of the corrugated structure of the angle restraining ring 3 is larger than the radius of the angle restraining ring 3, the vertical span ratio of the corrugated structure to the straight structure is 2-3:1, and the angle restraining ring 3 can adapt to deformation in the normal range of the optical cable, such as deformation during bending transportation.

Referring to fig. 4-5, a magnetic repulsion chain is disposed in the linear annular cavity 42 below the elastic diaphragm 6, the hard variable cavity 43 is fixedly connected with a plurality of transverse variable contact balls 52 corresponding to the magnetic repulsion chain, the magnetic repulsion chain includes a plurality of mutual exclusion magnetic balls 51 and a spacing rope 8 fixedly connected between two adjacent mutual exclusion magnetic balls 51, the mutual exclusion limiting rope 8 is also connected between the transverse variable contact balls 52 and the lowermost magnetic ball 51, magnetic blocks are embedded in the mutual exclusion magnetic balls 51 and the upper ends of the transverse variable contact balls 52, and the magnetic poles at the ends of the two adjacent magnetic blocks close to each other are the same, so that a repulsive force exists between the two adjacent mutual exclusion magnetic balls 51, and a repulsive force also exists between the lowermost transverse variable contact ball 52 and the adjacent mutual exclusion magnetic ball 51, when bending occurs, the magnetic repulsion chain is squeezed by the elastic diaphragm 6 during deionization, so that the hardness and strength of the lower end of the angle suppression ring 3 are higher, thereby achieving the effect of suppressing the bending angle of the optical cable, effective protection optical cable is difficult for damaging because of the angle of buckling is too big, spacing rope 8 is made for non-elastic material, and spacing rope 8 is in the lax state, spacing rope 8 effectively limits the position of mutual exclusion magnetic ball 51, make the change of mutual exclusion magnetic ball 51 difficult emergence position when linear ring chamber 42 removes, thereby make and have the repulsion all the time between two adjacent mutual exclusion magnetic balls 51, when not taking place to buckle or the angle of buckling is less, make and have certain distance between two adjacent mutual exclusion magnetic balls 51, thereby make the angle ring 3 of restraining difficult influence the bending of optical cable in normal range.

Referring to fig. 8, the lateral variation contact ball 52 is an elastic hollow structure, and the lateral variation contact ball 52 is filled with liquid with strong fluidity in a saturated manner, so that when being pressed, the liquid can rapidly pass through the inner lining plate 7, thereby being concentrated to the middle part, so that the lateral variation contact ball 52 can rapidly extend outwards, the thickness of the lateral middle part of the lateral variation contact ball 52 is 3-4 times of the thickness of the rest part, and the vertical span of the lateral middle part is not more than 1/3 of the diameter of the lateral variation contact ball 52, when being bent, the lateral variation contact ball 52 is pressed in the vertical direction, so that the lateral variation contact ball 52 transversely extends, at this time, the thicker middle part extends outwards, so as to be in contact with the adjacent lateral variation contact balls 52, so that a plurality of the lateral variation contact balls 52 are integrated, so that the strength and hardness of the lower end part of the angle suppression ring 3 are increased, thereby achieving the effect of limiting the bending angle, two symmetrical inner lining plates 7 are fixedly, two interior welts 7 are located the upper and lower both sides at horizontal middle part respectively, and interior welt 7 can regard as violently becoming to touch the inside lining of ball 52, and it is when receiving the extrusion force, and after taking place horizontal extension, violently become to touch by vertical extrusion between the ball 52, and two interior welts 7 of lining this moment are supported in inside, improve the hardness on the one hand, and on the other hand effectively protects violently to touch ball 52 and is difficult to be flattened, is convenient for it to resume former shape to make and press down angle ring 3 can realize the effect of restriction optical cable angle of buckling many times.

Through sheath section 2 and the setting of restraining angle ring 3, when buckling, on the one hand, certain angle's torsion can take place, reach the effect of dispersion, reach the effect of protection optical cable, effectively prolong the life of optical cable, on the other hand makes the bending point automatic transfer to restrain 3 upper end departments of angle ring, under the effect of buckling force, the deionized water passes through 6 extrusion magnetism repulsion chains of elastic diaphragm, make the distance diminish even extrusion contact between a plurality of mutual exclusion magnetic balls 51, and violently change and touch 52 atress horizontal extension, make a plurality of violently change and touch 52 mutual pressure of supporting, restrain 3 tip hardness grow under the angle ring this moment, thereby reach the effect that the restriction restraines angle ring 3 and its inside optical cable continues to buckle, effective protection optical cable is difficult to be damaged.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides an optical cable is with pressing down anti sheath of buckling of angle formula, establishes a plurality of sheath sections (2) and a plurality of fixed connection between two adjacent sheath sections (2) tip of cable (1) outer end including the cover and presses down angle ring (3), its characterized in that: it has last oval chamber (41) to cut in middle part of angle ring (3) upper end to suppress, it has hard chamber (43) that becomes to cut under angle ring (3), it has a plurality of evenly distributed's linear ring chamber (42) to cut in angle ring (3) middle part to suppress, it communicates with each other through linear ring chamber (42) to go up oval chamber (41) and hard chamber (43) that becomes, linear ring chamber (42) middle part fixed connection has elastic diaphragm (6), linear ring chamber (42) and last oval chamber (41) intussuseption of elastic diaphragm (6) top are filled with deionized water, the chain that repels has been placed in linear ring chamber (42) of elastic diaphragm (6) below, it touches ball (52) to violently become that a plurality of and the chain that repels correspond to become chamber (43) inside fixedly connected with firmly.

2. The angle-suppressing, bend-resistant sheath for optical cables of claim 1, wherein: the angle difference of two adjacent angle suppression rings (3) in the vertical direction is 15-20 degrees.

3. The angle-suppressing, bend-resistant sheath for optical cables of claim 2, wherein: the upper end of the angle restraining ring (3) is of an undulating corrugated structure, the lower end of the angle restraining ring (3) is of a straight structure, and the angle restraining ring (3) is made of elastic materials.

4. The angle-suppressing, bend-resistant sheath for optical cable of claim 3, wherein: the vertical span of the corrugated structure of the angle suppression ring (3) is larger than the radius of the angle suppression ring (3), and the vertical span ratio of the corrugated structure to the straight structure is 2-3: 1.

5. The angle-suppressing, bend-resistant sheath for optical cables of claim 1, wherein: the magnetic repulsion chain comprises a plurality of mutually exclusive magnetic balls (51) and a limiting rope (8) fixedly connected between two adjacent mutually exclusive magnetic balls (51), and the limiting rope (8) is also connected between the transverse variable contact ball (52) and the lowermost mutually exclusive magnetic ball (51).

6. The angle-suppressing, bend-resistant sheath for optical cable of claim 5, wherein: magnetic blocks are embedded in the mutually-exclusive magnetic ball (51) and the upper end part of the transverse variable contact ball (52), and the magnetic poles of the two adjacent magnetic blocks at the ends close to each other are the same.

7. The angle-suppressing, bend-resistant sheath for optical cable of claim 5, wherein: the limiting rope (8) is made of non-elastic materials, and the limiting rope (8) is in a loose state.

8. The angle-suppressing, bend-resistant sheath for optical cables of claim 6, wherein: the transverse variable contact ball (52) is of an elastic hollow structure, and liquid with strong fluidity is filled in the transverse variable contact ball (52) in a saturated mode.

9. The angle-suppressing, bend-resistant sheath for optical cables of claim 8, wherein: the thickness of the transverse middle part of the transverse variable contact ball (52) is 3-4 times of that of the rest part, and the vertical span of the transverse middle part is not more than 1/3 of the diameter of the transverse variable contact ball (52).

10. The angle-suppressing, bend-resistant sheath for optical cables of claim 9, wherein: the inner part of the transverse variable contact ball (52) is fixedly connected with two symmetrical lining plates (7), and the two lining plates (7) are respectively positioned on the upper side and the lower side of the transverse middle part.