Male contact for optical fibre

FIELD: physics.

SUBSTANCE: device has outer body made from an elastically deformable material, a cylindrical guide having a front portion attached in the rear portion of the outer body and a rear portion protruding from the rear portion of the outer body. A cable adapter extends through the cylindrical guide. An elongated floating ferrule extends through the front portion of the outer body. The ferrule is connected to a ferrule holder movably mounted in said outer body. A support means rests on the first shoulders of the outer body, and a helical spring provided between the front portion of the cylindrical guide and the support means of the ferrule holder. The cable adapter is mounted so as to float within the cylindrical guide.

EFFECT: improved contact.

12 cl, 2 dwg

 

The present invention relates to stab the optical fiber containing the outer body of elastically deformable material, a cylindrical guide having a front section attached to the rear section of the outer casing, and a rear section extending from the rear section of the outer casing, cable adapter, ongoing for over a cylindrical guide elongated floating tip with cut fiber, the tip extends through the front section of the outer casing and connected to a tubular handpiece holder installed with the possibility of removal in the outer housing and having a support means suitable for implementing support for the first shouldered provided between the front and the rear sections of the outer casing, and a coil spring provided between the front section of the cylindrical guide and reference tool handpiece holder, clamping abutment means handpiece holder to zaplechikami the outer casing.

Such pins for optical fibers are widely used in communications and high speed data transfer for connecting optical fibers to each other or even with light sources or detectors. Of particular interest is the case when a large number in the boxes should be placed or put into one connector, because this excluded the difficulties associated with individual positioning and bonding of the fibers in the connector, the main drawback of this solution is that when the breakage of a single fiber is necessary to replace the entire node. In these pin contacts for optical fibres the cable adapter to ensure the function of compression in the cable adapter plastic shell, glued with glue for hot gluing to the optical fiber, which stretched from the floating tip through the outer body and the cable adapter.

When assembling such a plug for an optical fiber of the optical fiber is placed in a floating tip, and then perform the operation very precision polishing, because the end must have the exact shape to ensure signal transmission without any loss. For this work, performed on a fiber with a diameter of 0.125 mm, requires special care and accurate installation and accessories.

If repair is required, outside the workshop fiber optic cable due to breakage of one or more fibers, for example, when the transmission of sporting events or transfer directly from the event, not always available fixtures and installation or even the power supply required for the installation of the optical fiber in the ferrule and polishing it.

To avoid this problem, pin contact, optical fibers provide cut optical fibers, bonded with high accuracy at the tip, and the end is polished at the factory. Upon the occurrence of breakage of such a sleeve connector is used, introducing a new optical fiber through the cable adapter as long as it does not come into contact with the unpolished end of the specified segment of the fiber located within the specified tip. The specified adapter cable compresses on the plastic shell of the new fiber and thereby achieve a more than satisfactory quality of repair, even if the signal quality on one site is not as good as that of the original fiber. Drop a special optical gel, placed at the junction of the exposed ends of the two fibers, improves the transmission.

However, when crimping the new fiber small offset to the rear end of the contact may compromise the quality of the joint. Because it must work in extreme weather conditions, when the temperature drops this joint may break down due to expansion or shrinkage plots of the two fibers and/or optical gel.

The present invention is to offer a male contact that eliminates the above mentioned disadvantages.

Pin contact in the CE is accordance with the invention is distinguished by signs, listed in paragraph 1 of the claims.

Ways of implementation are defined in the dependent claims.

The advantage of the plug in accordance with the invention is that the cable adapter is installed in the cylindrical guide floating. In practice, after entering the new fiber optic cable adapter to interface with the cut fiber, fixed inside the tip and objitem cable adapter, removable support is removed from the cable adapter. When removing the removable support cable adapter pressure cylindrical spring within the cylindrical guide allows you to maintain axial pressure on the adapter cable, and this ensures constant contact at the junction of the ends of two optical fibers. Spring is installed specifically to ensure that this junction in the case of expansion and contraction of the segments of the two optical fibers.

In accordance with the variation of the junction of the two segments of optical fibers is aligned with a hole provided in the handpiece, which also provides a way to remove the optical gel from the place of junction of the outside channel of the handpiece which contains fiber.

One implementation of the present invention will be described using the accompanying drawings.

In the drawings:

figure 1 - p is Doliny view with local incision plug without fibers; and

figure 2 is a longitudinal view with the local section of the tip part of the handpiece holder.

It is preferable to make the outer body 2 by injection molding of elastically stretchable plastic. Two Windows 10 is formed by molding the outer casing 2 between the front 3 and rear 4 sites, and these Windows are diametrically opposite, and their front end wall forms a first shouldered 11. Two internal longitudinal grooves (not shown), starting from these two Windows 10, ending at the edge of the rear section 4 of the outer casing 2. Between the two Windows 10 and the rear section 4 of the outer casing 2 is formed by molding two other Windows 110, also diametrically opposite to each other at their rear end wall forms two shoulder 111. Two annular internal grooves (not shown), starting from these two Windows 110, continue through approximately 90°. Two longitudinal internal grooves (not shown) continues between the ends of the two annular grooves and the edge of the rear part 4 of the outer casing 2.

The front section 3 of the outer casing 2 has four longitudinal slots 12, which is formed by forming pairs in the outer shell and diametrically opposite, two of these slots 12 are located on one straight line, respectively boxes 10.

The holder 13 of the handpiece with whom holds the front tubular part 14 and the rear tubular part 15, which swiney with each other on the seat 16. The front part 14 includes a longitudinal space 17, in which the cylindrical tip 18 with segment 182 of the optical fiber (2), injected with fixing by crimping or gluing.

The rear portion 15 of the holder 13 of the handpiece contains two speakers for the radii of the site or ribs 19, which are located diametrically opposite, outer diameter which is larger than the inner diameter of the outer casing 2, and which are made with the possibility of accommodation in the Windows 10 of the outer casing 2.

A cylindrical spring 21 is located behind the rear end of the part 15 and rests on its edge.

Pin pin 1 for optical fibers are collected as follows.

Installation can be performed by a method similar to that described in the patent document EP-A-1079251, namely by using the elastic deformation of the outer casing 2. However, in the embodiment described below, the chosen another way. Part 15 of the holder 13 of the handpiece is inserted through the rear section 4 of the outer casing 2 so that the ribs 19 is slid in the longitudinal grooves ending in boxes 10, with a small elastic deformation of the outer casing 2 contributes to this placement. When the ribs 19 reach the window 10, the outer body 2 is regaining its shape, and the part 15 is captured. After that enter s the dinner 21 (which, as shown, may be double) and rests in the ribs 19 of the part 15.

Then the rear section 4 of the outer casing 2 being cylindrical guide 6. The first stage is the input cable adapter 65 in the first cylindrical body 61, followed by the spring 66, while the second cylindrical body 611 is inserted and/or paste so that its annular shoulder 612 rested against the edge of the first cylindrical body 61. In this position, the spring 66 is compressed between the edge of the front end of the housing 611 and shoulder 651, located on the cable adapter 65. Removable bearing 652, which may be a snap ring installed in the groove of the cable adapter and rests on the annular shoulder 612 of the second cylindrical body 611, supports the spring 66 is compressed. The first cylindrical body 61 is provided with two diametrically opposite radial ribs 62. Properly collected cylindrical guide 6 is inserted through the rear end of phase 4 in the outer body 2 due to the sliding of the ribs 62 in the longitudinal grooves which terminate in annular grooves. After reaching at the end of the movement of these annular grooves node turn approximately 90°, and the ribs 62 terminate in boxes 110, while the annular shoulder 63 of the first cylindrical body 61 abuts against the rear edge of the outer casing is a 2. So, get a bayonet lock, with ribs 62 abuts the shouldered 111. Then the tip 18 is inserted into and/or glued in part 14 of the holder, is inserted through the front end of the outer casing 2. The two parts 15 and 14 are collected respectively. To prevent loosening, mounting thread put glue. A cylindrical spring 21 is maintained compressed between the front section 5 of the front cylindrical body 61 and the edge of the rear part 15 of the holder 13 of the handpiece. The spring 21 presses the ribs 19 to zaplechikami 11 and the ribs 62 to zaplechikami 111. In the case of the holder 13 of the tip is properly placed inside the outer casing 2, the tip 18 is kept floating and passes through the front section 3 of the outer casing 2.

Within the scope of the present invention are possible modification.

For example, the number and relative location of the boxes 10, 110 and longitudinal slits 12 may be different. The angular position of the longitudinal slots 12 may also be different. Window 10 and 110 of the outer casing 2 may be replaced by two internal annular walls formed by molding in the outer case 2. In this case, the ribs 19 handpiece holder can be replaced by a disc-shaped sections formed on the rear part 15 of the holder 13 of the handpiece. A cylindrical guide 6 may be made in the form of one cyl is nticeship details.

As shown in figure 2, segment 182 of the optical fiber is glued at the tip 18. Its front end 183 carefully polished at the factory. The other end of the line segment 182 reaches the middle of the hole 181 of the side wall of the tip 18. In addition, in this hole precipitated a drop optical gel.

In cases when you need to use this pin contact, the optical fiber must be entered through the rear end of the cable adapter 65 up until the end of the specified fiber will not come in contact with the end face of the segment 182, located in the hole 181, while the optical fiber compresses the cable adapter 65 in the usual way, then remove the removable bearing 652. The effect of axial pressure of the spring 66 is guaranteed that the cable adapter 65 the ends of two optical fibers will be in contact. The dimensions of the spring 66 should be such that it is "compensated" any deflection of the fiber during crimping of the latest and changes in length in the case of temperature changes. On the one hand, hole 181 provides a way to remove any excess optical gel and, on the other hand, compensates for the expansion of the optical gel with increasing temperature. Therefore, this floating unit ensures constant contact ends of two optical fibers.

To connect the two sleeves of the connector according to the invention (that is father to the end) use a combining coupler, in which two sleeve is locked in place so that the free ends of the two lugs in contact.

1. Pin a contact to the optical fiber (1)containing the outer body (2) of providermessage material, a cylindrical guide (6)having a front section (5)attached to the rear section (4) of the outer casing (2)and rear section (7), extending from the rear section (4) of the outer casing (2), adapter cable (65), ongoing for over a cylindrical guide (6), extended floating tip (18)with cut (182) fiber, with the tip (18) passes through the front section (3) of the outer casing (2) and connected to a tubular holder (13) tip installed with the possibility of removal in the outer casing (2) and having a support means (19), suitable for implementation support for the first shouldered (11)located between the front (3) and rear (4) sections of the outer casing (2)and coil spring (21)provided between the front section (5) of the cylindrical guide (6) and the support means (19) of the holder (13) tip, clamping abutment means (19) of the holder (13) of the tip to the first zaplechikami (11) of the outer casing (2), characterized in that the cylindrical guide (6) contains the first cylindrical body (61)with the support means (62), suitable for the coupling is possible with the second shoulder (111) of the outer casing (2), located between the first shoulder (11) and rear section (4) of the outer casing (2)and the annular shoulder (63)resting on the edge of the rear section (4) of the outer casing (2), the first cylindrical body (61) has an internal shoulder (611), adapter cable (65) mounted sliding inside the first housing (61, 611), adapter cable (65) is provided with a ring shoulder (651)below relative to the front section of the first cylindrical body (61, 611), it provides a socket for a cylindrical spring (66)resting on an annular shoulder (651) cable adapter (65) and on the inner shoulder (611) of the first cylindrical body (61), clamping adapter cable (65) to the rear end of the tip (18), with adapter cable (65) provided on the site, located outside of the first cylindrical body (61), a removable support (652)resting on the edge of the rear cylindrical section of the guide (6)supporting a compressed coil spring (66)located inside the first cylindrical body (61), and allowing the cable adapter (65) to swim inside a cylindrical guide (6) after the removable bearing (652) deleted.

2. Male contact according to claim 1, characterized in that the internal shoulder of the first cylindrical body (61) represents the second is zylindrische case (611), attached to the first cylindrical casing (61) and backed by the annular shoulder (612) to the ring shoulder (63) of the first cylindrical body (61), and a lesser length than the length of the first cylindrical body (61).

3. Male contact according to any one of claims 1 or 2, characterized in that the removable bearing (612) represents a snap ring located in the groove of the cable adapter (65).

4. Male contact according to any one of claims 1 or 2, characterized in that the tip (18) is provided with a radial hole (181) near its rear end providing access to the terminal of the optical fiber.

5. Male contact according to claim 4, characterized in that the segment (182) optical fiber fixed in the tip (18), passes from the front end (183) the tip to the middle hole (181).

6. Male contact according to any one of claims 1, 2 and 5, characterized in that the first shouldered (11) of the outer casing (2) is formed by the boundary walls (11) of the window (10)formed by molding the outer casing (2), and reference tool created radial protrusions (19) of the holder (13) tip, respectively, made with the possibility of accommodation in the indicated boxes (10), and the fact that the second shouldered (111) of the outer casing (2) is formed by the boundary walls (111) Windows (110)formed by molding in the outer casing (2), and the fact that the supporting means (62) of the first the ribbed body (61) created radial protrusions (62), respectively made with the possibility of accommodation in the indicated boxes (110).

7. Male contact according to claim 6, characterized in that each of the Windows (10) of the first shoulder (11) is located at the end of the longitudinal grooves within the outer casing (2), continuing to the edge of the rear section (4) of the outer casing (2), so that each window (110) of the second shoulder (111) is at the end of the internal annular groove, continuing through approximately 90°, and the other end which is the starting point of the longitudinal inner groove continuing to the edge of the rear section (4) of the outer casing (2).

8. Male contact according to claim 6, characterized in that two pairs of Windows (10; 110) are diametrically opposed.

9. Male contact according to any one of claims 1, 2, 5, 7 and 8, characterized in that the front section (3) of the outer casing (2) contains a plurality of longitudinal grooves (12)formed by molding the outer housing, at an angular distance that is the same from one to the other.

10. Male contact according to any one of claims 1, 2 and 5, characterized in that the first shouldered (11) is formed by the inner annular wall of the outer casing (2).

11. Pin contact of claim 10, characterized in that the supporting means is formed of a disc-shaped area of the holder (13) tip.

12. Male contact according to any one of claims 1, 2, 5, 7, 8, and 11, distinguish the different topics the holder (13) of the handpiece made in the form of two tubular parts (14, 15), which swiney and glued to each other, with one of the parts (15) supports the abutment means (19) and the other (14) supports the tip (18).



 

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4 cl, 10 dwg

FIELD: physics, optics.

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2 cl, 8 dwg

FIELD: physics, communication.

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8 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: proposed multifunctional socket coupler and multifunctional coupling plug assembly contains the socket coupler base (11) and the socket coupler polymeric protective cover (21) with electric connection throughholes (151a, 151b) and the fibre throughhole (131, 131a, 131b) distanced from the electric connection throughholes (151a, 151b). It also contains a guide element (23, 91, 93) designed to provide for the optical fibre (61) cleared end reception and positioning in a pre-defined relationship to the fibre throughhole (131) and a clamping element (71, 83) for the optical fibre (61) reversive clamping with the fibre end in a pre-defined relationship to the fibre throughhole (131). The above socket coupler polymeric protective cover (21) is designed to enable axial and transverse direction of the optical fibre.

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22 cl, 6 dwg

FIELD: physics.

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EFFECT: simple design.

20 cl, 11 dwg

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