TWM556424U - Multi core optical fiber connecting device - Google Patents

Abstract

A multi-core optical fiber connection device includes a first multi-core optical fiber connector and a second multi-core optical fiber connector. The first multi-core fiber optic connector includes a first joint unit. The second multi-core fiber optic connector includes a second connector unit. The second joint unit includes a movable sleeve and an active ring. Pulling the movable ring can push the first joint unit by the movable sleeve, and the first multi-core optical fiber connector is separated from the second multi-core optical fiber connector, thereby having one-hand operation to make the first multi-core optical fiber connector The ability to quickly connect and disconnect with the second multi-core fiber optic connector.

Description

Multi-core optical fiber connecting device

The present invention relates to a connecting device, and more particularly to a multi-core optical fiber connecting device.

The multi-core optical fiber connecting device generally comprises a multi-core optical fiber plug and a multi-core optical fiber socket which can be mutually connected, and a stable connection is obtained for docking, and a multi-core optical fiber plug and a multi-core optical fiber socket have a fastening structure to prevent the two. Separate from each other. However, the existing fastening structure may require two-hand operation when the user wants to remove the multi-core optical fiber plug from the multi-core optical fiber socket, which is inconvenient.

For example, Taiwan Patent No. M524580 (corresponding to CN205562884, US9625655) discloses a multi-core optical fiber socket and a multi-core optical fiber plug matched with the multi-core optical fiber socket, and when the multi-core optical fiber plug is inserted into the multi-core optical fiber socket, the insertion jack is used. The plug connector can push the positioning member radially outward so that the plug connector can be smoothly inserted into the jack, and then the positioning member can be snapped into the groove of the plug connector to quickly combine the multi-core fiber plug With the multi-core fiber optic socket. When the multi-core optical fiber plug and the multi-core optical fiber socket are to be disassembled, the force is applied to move the collar to disengage the positioning member from the collar, thereby allowing the positioning member to move radially outward and away from the groove. , the multi-core fiber plug is removed from the multi-core fiber socket. However, this combination structure requires a multi-core optical fiber plug to be held in one hand, a multi-core optical fiber socket in one hand, and a multi-core optical fiber plug to be separated from the multi-core optical fiber socket by both hands.

Accordingly, it is an object of the present invention to provide a multi-core fiber optic connector that can be operated with one hand.

Therefore, in some embodiments, the novel multi-core optical fiber connecting device comprises a first multi-core optical fiber connector and a second multi-core optical fiber connector. The first multi-core fiber optic connector includes a first multi-core fiber optic assembly, a first connector unit, and a first sleeve unit, the first connector unit engaging the first sleeve unit to accommodate the first a multi-core fiber optic assembly, the first joint unit includes a joint body, and the joint body has a connecting end portion connected to the first sleeve unit, and a first joint end portion opposite to the connecting end portion, And forming a ring groove on the outer surface of the first joint end. The second multi-core fiber optic connector includes a second multi-core fiber optic assembly, a second connector unit, and a second sleeve unit, the second connector unit engaging the second sleeve unit to accommodate the first a second multi-core fiber optic assembly, the second joint unit includes an outer ring connected to the second sleeve unit, an inner ring abutting the outer ring, and a movable sleeve movably sleeved outside the inner ring a retaining ring disposed on the outer ring and the outer side of the movable sleeve, a movable ring movably sleeved on the outer side of the fixed ring, and a set of the first ring disposed on the inner ring to provide elastic bias to the movable sleeve a spring, a second spring disposed on the fixing ring to provide a resilient bias to the movable ring, and a plurality of positioning beads having a second engaging end mating with the first engaging end And a plurality of mounting holes formed at the second joint end portion and spaced apart from each other, the mounting holes respectively receiving the positioning beads and at a position matching the ring groove of the first joint end portion, the movable ring having a ring body spaced apart from the fixing ring and a ring convex protruding from the inner side of the ring body The protruding ring end edge portion of the ring member is spaced from the ring groove and cooperatively define a portion of the ring, and the ring portion having a stepped surface projection of the ring portion adjacent to the groove. When the first engaging end portion and the second engaging end portion are not butted, the movable sleeve is constantly biased by the first spring bias on the inner side of the fixing ring to cover the mounting holes and pressed against the positioning beads to make the same The positioning bead protrudes from the outer surface of the fixing ring, and the stepped surface of the ring protrusion of the movable ring abuts the positioning bead and the annular groove portion protrudes from the positioning bead. When the first engaging end portion is in abutment with the second engaging end portion, the movable sleeve is pushed against the mounting hole by the first engaging end portion to place the positioning bead card in the ring groove, and The movable ring is biased by the second spring to move the ring protrusion to a position covering the mounting holes to press against the positioning beads.

In some implementations, the first multi-core fiber optic assembly includes a first mating end, and the first mating end has a first positioning key, and the inner side of the joint body of the first joint unit forms a mating capacity Positioning a first keyway of the first positioning key to position the first multi-core optical fiber assembly relative to the first joint unit, the second multi-core optical fiber assembly includes a second butted end, and the second butt end The second multi-core fiber optic assembly is positioned opposite the second joint unit. .

In some implementations, the first multi-core fiber optic assembly includes a first mating end portion, the second multi-core fiber optic assembly includes a second mating end portion for mating with the first mating end portion, and a An inner seal ring is disposed on the second butt end, and the inner seal ring abuts at an inner side of the inner ring.

In some implementations, the first multi-core fiber optic assembly includes a first mating end, a first fiber optic cable coupled to the first mating end, and a set of the first fiber optic cable a first fiber-optic insulation layer, the first sleeve unit includes a first connecting tube, a first sealing ring and a first protective sleeve, the first connecting tube is connected to the joint body and has a first tube body, the first tube body An end of the first tube is formed on the first fiber-shaped insulating layer and is inserted into the first toothed end, and the first sealing ring is sleeved in the first toothed end. The first protective sleeve is sleeved on the first toothed end, and the second multi-core optical fiber assembly includes a second butt end, and a second butt end for abutting the first butt end a second fiber optic cable connected to the second fiber optic cable disposed on the second fiber optic cable, the second bushing unit includes a second connecting tube, a second sealing ring and a second protective sleeve The second connecting tube is connected to the outer ring and has a second tube body, and the second tube body is connected to the second protective sleeve a second toothed end is formed at one end, and the second sealing ring is sleeved on the second fiber insulation layer and is inserted into the second toothed end, and the second protective sleeve is sleeved on the second Toothed end.

In some embodiments, the joint body is provided with an internal thread, and the first tube body is provided with a mating external thread, so that the joint body is locked and fixed with the first connecting tube, and the outer ring is provided with the inner ring. Threaded, and the second tube body is provided with a mating external thread to lock and fix the outer ring and the second connecting tube.

In some embodiments, the joint body is provided with an internal thread, the first sleeve unit includes a first connecting tube, the first connecting tube is connected to the joint body and has a first tube body, and the first tube The body is provided with a matching external thread, so that the joint body is locked and fixed with the first connecting tube, the outer ring is provided with an internal thread, and the second sleeve unit comprises a second connecting tube, the second connecting tube The outer ring is connected and has a second tube body and the second tube body is provided with a mating external thread to lock the outer ring and the second connecting tube.

The present invention has the following effects: when the first multi-core optical fiber connector and the second multi-core optical fiber connector are separated from the docking state, the first engagement end can be pushed by the movable sleeve as long as the movable ring is pulled And the first joint end is separated from the second joint end to separate the first multi-core fiber connector from the second multi-core fiber connector, and can have a single-hand operation to make the first multi-core The ability to quickly connect and disconnect the fiber optic connector to the second multi-fiber connector.

Referring to FIG. 1 to FIG. 3, an embodiment of the novel multi-core optical fiber connecting device includes a first multi-core optical fiber connector 100 and a second multi-core optical fiber connector 200 that are mutually contiguous.

Referring to FIGS. 3-6, the first multi-core optical fiber connector 100 includes a first multi-core optical fiber assembly 1, a first joint unit 2, and a first sleeve unit 3. The first joint unit 2 is engaged with the first sleeve unit 3 to accommodate the first multi-core fiber assembly 1 in common. The first joint unit 2 includes a joint body 21 and a fixing piece 22, and the joint body 21 has a connecting end portion 211 connected to the first sleeve unit 3, and a second opposite to the connecting end portion 211. An end portion 212 is joined, and a ring groove 213 is formed on an outer surface of the first joint end portion 212. The first multi-core fiber optic assembly 1 includes a first butted end portion 11 , a first fiber optic cable 12 connected to the first mating end portion 11 , and a first set of the first fiber optic cable 12 . The fiber optic insulation layer 13 has a first positioning key 111. The inner side of the connector body 21 of the first connector unit 2 forms a first keyway 214 for receiving the first positioning key 111. The first multi-core fiber optic assembly 1 is positioned opposite the first joint unit 2, that is, the first multi-core fiber optic assembly 1 and the first joint unit 2 are not relatively rotated. The first sleeve unit 3 includes a first connecting tube 31 connected to the joint body 21, a first gasket 32, a first sealing ring 33 and a first protective sleeve 34. The first connecting tube 31 has a first tube body 311 and a first protruding portion 312 protruding around the first tube body 311. In this embodiment, the outer circumference of the first protruding portion 312 is six sides. Shape, to facilitate the use of tools such as wrenches. The first gasket 32 is sleeved on the first pipe body 311 and sandwiched between the first protruding portion 312 and the joint body 21 . In this embodiment, the joint body 21 is provided with an internal thread 215 (see FIG. 11), and the first tube body 311 is provided with a matching external thread 314 (see FIG. 11), so that the joint body 21 and the joint body 21 The first connecting pipe 31 is locked and fixed. Referring to FIG. 5 and FIG. 7 , the first end of the first tube 311 and the first protective sleeve 34 form a first toothed end 313 , and the first sealing ring 33 is sleeved on the first optical fiber insulation layer 13 . The first protective sleeve 34 is sleeved on the first toothed end 313. A portion of the first multi-core fiber optic assembly 1 is threaded through the first sleeve unit 3. The gap between the first fiber insulation layer 13 and the first sleeve unit 3 is closed by the first sealing ring 33 to prevent liquid from penetrating into the joint body 21, thereby preventing liquid from damaging the first multi-core fiber. Component 1.

Referring to FIG. 8 to FIG. 11 , the second multi-core optical fiber connector 200 includes a second multi-core optical fiber assembly 4 , a second joint unit 5 , and a second sleeve unit 6 . The second joint unit 5 and the second The two bushing units 6 are joined to collectively receive the second multi-core fiber optic assembly 4. The second joint unit 5 includes an outer ring 51 connected to the second sleeve unit 6, an inner ring 52 abutting the outer ring 51, and a movable sleeve movably sleeved on the outer side of the inner ring 52. 53. A fixing ring 54 disposed on the outer side of the inner ring 52 and the movable sleeve 53 , a movable ring 55 movably sleeved on the outer side of the fixing ring 54 , and a set on the inner ring 52 for the activity The sleeve 53 provides a resiliently biased first spring 56, a set of second springs 57 disposed on the retaining ring 54 to provide resilient bias to the movable ring 55, and a plurality of positioning beads 58. The fixing ring 54 has a second engaging end portion 541 that is mated with the first joint end portion 212, and a plurality of mounting holes 542 formed at the second joint end portion 541 and spaced apart. The mounting holes 542 respectively receive the positioning beads 58 and are engaged with the ring grooves 213 of the first engaging end portion 212. The movable ring 55 has a ring body 551 spaced apart from the fixing ring 54 and a ring protrusion 552 protruding from the inner side of the ring body 551. The ring protrusion 552 is spaced apart from the end edge of the ring body 551 by The ring body 551 collectively defines a ring groove portion 553, and the ring protrusion portion 552 has a first-order surface 552a adjacent to the ring groove portion 553. The second multi-core fiber optic assembly 4 includes a second mating end portion 41 for abutting the first mating end portion 11, a second fiber optic cable 43 connected to the second mating end portion 41, and a set The second fiber-optic insulation layer 44 of the second fiber-optic cable 43 has a second positioning key 411, and the inner side of the inner ring 52 of the second connector unit 5 forms a matching accommodation. The second keyway 521 of the second positioning key 411 is configured to position the second multi-core optical fiber component 4 relative to the second joint unit 5. The second sleeve unit 6 includes a second connecting tube 61, a second gasket 62, a second sealing ring 63 and a second protective sleeve 64 connected to the outer ring 51. The second connecting tube 61 has a second tube body 611 and a second protruding portion 612 protruding around the second tube body 611. The outer ring 51 is provided with an internal thread 511, and the second tube body 611 is provided with a matching external thread 613 to lock and fix the outer ring 51 and the second connecting tube 61. One end of the second tube body 611 and the second protection sleeve 64 is formed with a second toothed end portion 614, and the second sealing ring 63 is sleeved on the second fiber insulation layer 44 and is placed on the second The second protective sleeve 64 is sleeved in the second toothed end 614. A portion of the second multi-core fiber optic assembly 4 is threaded through the second sleeve unit 6. The gap between the second fiber insulation layer 44 and the second sleeve unit 6 is closed by the second sealing ring 63 to prevent liquid from penetrating into the second joint unit 5, thereby preventing liquid damage to the second Core fiber optic assembly 4. The second multi-core fiber optic assembly 4 further includes a set of inner seal rings 42 disposed at the end edges of the second butt ends 41, and the inner seal ring 42 abuts the inner edge of the inner ring 52. And abutting the first joint end portion 212 when the first multi-core fiber optic connector 100 is docked with the second multi-core fiber optic connector 200 (see FIG. 13) to prevent liquid from penetrating into the first multi-core fiber optic assembly. 1 is mated with the second multi-core fiber optic assembly 4.

Referring to FIGS. 11-13, when the first multi-core optical fiber connector 100 is not mated with the second multi-core optical fiber connector 200, that is, at the first joint end portion 212 and the second joint end portion 541, When not spliced, the movable sleeve 53 is biased by the first spring 56 and is located on the inner side of the fixing ring 54 to cover the mounting holes 542 and is pressed against the positioning beads 58 to protrude the positioning beads 58 from the fixing ring. The outer surface of the outer surface of the ring 55 of the movable ring 55 abuts against the positioning beads 58 and the annular groove portion 553 for the positioning beads 58 to protrude therein. When the first engaging end portion 212 is in contact with the second engaging end portion 541, the movable sleeve 53 is pushed against the mounting hole 542 by the first engaging end portion 212 to fix the positioning beads 58. In the ring groove 213, the movable ring 55 is biased by the second spring 57 to move the ring protrusion 552 to a position covering the mounting holes 542 to be pressed against the positioning beads 58 by the positioning. The bead 58 is placed in the ring groove 213 to maintain the first multi-core optical fiber connector 100 and the second multi-core optical fiber connector 200 relatively fixed to maintain a stable connection. To separate the first multi-core optical fiber connector 100 from the second multi-core optical fiber connector 200, the movable ring 55 is pulled by a single hand operation, and the ring convex portion 552 is moved away from the positioning beads 58 to be released. The positioning beads 58 are pressed against, so that the positioning beads 58 can move toward the annular groove portion 553. At the same time, the movable sleeve 53 is returned to the original position by the first spring 56 and is combined during the movement. The first joint end portion 212 is pushed out, and the first joint end portion 212 is withdrawn from the second joint end portion 541, so that the first multi-core optical fiber connector 100 and the second multi-core optical fiber connector can be 200 separation. When the movable sleeve 53 pushes the first engaging end portion 212, the positioning beads 58 are also moved toward the annular groove portion 553, and finally the movable sleeve 53 is pressed against the positioning beads 58 by the inner side of the fixing ring 54. And the positioning beads 58 protrude from the outer surface of the fixing ring 54 for the ring protrusion 552 to abut, so that the ring protrusion 552 can compress the second spring 57 to be in the first multi-core fiber. When the connector 100 is mated with the second multi-core optical fiber connector 200, the ring convex portion 552 can be returned to a position pressed against the positioning beads 58 by the elasticity of the second spring 57.

In summary, when the first multi-core optical fiber connector 100 and the second multi-core optical fiber connector 200 are separated from the docking state, the movable ring 55 can be pulled by the movable sleeve 53 to push the first The end portion 212 is joined, and the first joint end portion 212 is withdrawn from the second joint end portion 541, thereby separating the first multi-core optical fiber connector 100 from the second multi-core optical fiber connector 200, and can have a single The operation of the first multi-core optical fiber connector 100 and the second multi-core optical fiber connector 200 are quickly connected and separated by hand operation.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

100‧‧‧First multi-core fiber optic connector
200‧‧‧Second multi-core fiber optic connector
1‧‧‧First multi-core fiber optic assembly
11‧‧‧First docking end
111‧‧‧First positioning key
12‧‧‧First fiber optic cable
13‧‧‧First fiber insulation
2‧‧‧First joint unit
21‧‧‧Connector body
211‧‧‧Connected end
212‧‧‧First joint end
213‧‧‧ Ring groove
214‧‧‧First keyway
215‧‧‧ internal thread
22‧‧‧Fixed tablets
3‧‧‧First casing unit
31‧‧‧First connecting pipe
311‧‧‧First tube
312‧‧‧First bulge
313‧‧‧First toothed end
314‧‧‧ external thread
32‧‧‧First gasket
33‧‧‧First seal ring
34‧‧‧First protective cover
4‧‧‧Second multi-core fiber optic components
41‧‧‧Second butt end
411‧‧‧Second positioning key
42‧‧‧ inner seal ring
43‧‧‧second fiber optic cable
44‧‧‧Second fiber insulation
5‧‧‧Second joint unit
51‧‧‧Outer Ring
511‧‧‧ internal thread
52‧‧‧ Inner Ring
521‧‧‧Second keyway
53‧‧‧ Activity sets
54‧‧‧Fixed ring
541‧‧‧Second joint end
542‧‧‧Installation holes
55‧‧‧ Activity ring
551‧‧‧Act
552‧‧‧ ring convex
552a‧‧ ‧
553‧‧‧Circle
56‧‧‧First spring
57‧‧‧Second spring
58‧‧‧ positioning beads
6‧‧‧Second casing unit
61‧‧‧Second connection tube
611‧‧‧Second body
612‧‧‧second bulge
613‧‧‧ external thread
614‧‧‧second toothed end
62‧‧‧Second gasket
63‧‧‧Second seal ring
64‧‧‧Second protective cover

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of an embodiment of the novel multi-core fiber optic connection device; FIG. 2 is a view illustrating the embodiment of the present invention; 1 is an exploded perspective view of the first multi-core optical fiber connector and the second multi-core optical fiber connector in an undocked state; FIG. 3 is another perspective view of FIG. 2; FIG. 4 is a first multi-core optical fiber connector of the embodiment. FIG. 5 is a perspective exploded view of the first multi-core optical fiber assembly and the first joint unit of the embodiment; FIG. 7 is a perspective view showing the first embodiment of the present embodiment; Figure 8 is a perspective exploded view showing the second multi-core optical fiber connector of the embodiment; Figure 9 is a perspective exploded view of the second multi-core optical fiber connector of the embodiment; Figure 9 is a further exploded perspective view of Figure 8; 10 is an exploded perspective view showing the second multi-core optical fiber assembly and the second joint unit of the embodiment; FIG. 11 is a view showing the first multi-core optical fiber connector and the second multi-core optical fiber connector of the embodiment in an undocked state. Partial sectional view; Figure 12 is a partial cross-sectional view showing the docking process of the first multi-core optical fiber connector and the second multi-core optical fiber connector of the embodiment; and Figure 13 is a view showing the first multi-core optical fiber connector of the embodiment and the second A partial cross-sectional view of the core fiber optic connector in a docked state.

Claims (6)

A multi-core optical fiber connecting device comprising: a first multi-core optical fiber connector comprising a first multi-core optical fiber assembly, a first joint unit and a first sleeve unit, the first joint unit and the first sleeve The tube unit is coupled to receive the first multi-core optical fiber assembly, the first joint unit includes a joint body, and the joint body has a connecting end connected to the first sleeve unit, and a opposite Connecting a first joint end portion of the end portion and forming a ring groove on an outer surface of the first joint end portion; and a second multi-core fiber optic connector including a second multi-core fiber assembly and a second joint unit a second sleeve unit engaged with the second sleeve unit to accommodate the second multi-core fiber optic assembly, the second joint unit including an outer portion connected to the second sleeve unit a ring, an inner ring abutting the outer ring, a movable sleeve movably sleeved outside the inner ring, a set of fixing rings disposed on the inner ring and the outer side of the movable sleeve, and a movable sleeve a movable ring on the outer side of the fixing ring, a set is provided in the a first spring that provides a resilient bias to the movable sleeve, a second spring that is disposed on the retaining ring to provide a resilient bias to the movable ring, and a plurality of positioning beads, the retaining ring having a first a joint end portion mating with the second joint end portion, and a plurality of mounting holes formed at the second joint end portion and spaced apart from each other, the mounting holes respectively accommodating the positioning beads and the position is engaged with the first joint The end ring groove is matched, the movable ring has a ring body spaced apart from the fixing ring and a ring protrusion protruding from the inner side of the ring body, the ring protrusion being spaced apart from the end edge of the ring body by a distance Forming a ring groove portion together with the ring body, and the ring protrusion portion has a first-order surface adjacent to the ring groove portion; when the first joint end portion and the second joint end portion are not butted, the movable sleeve is subjected to the first The spring bias is constantly located on the inner side of the fixing ring to cover the mounting holes and is pressed against the positioning beads such that the positioning beads protrude from the outer surface of the fixing ring, and the step surface of the ring protrusion of the movable ring is opposite to the Positioning the bead and the ring groove for the positioning bead to protrude therein; in the first bond When the portion is docked with the second engaging end portion, the movable sleeve is pushed against the mounting hole by the first engaging end portion to place the positioning bead card in the ring groove, and the movable ring is subjected to the first The two spring biases move the ring projections to a position covering the mounting holes to press against the positioning beads. The multi-core optical fiber connecting device of claim 1, wherein the first multi-core optical fiber assembly comprises a first butted end portion, and the first butted end portion has a first positioning key, and the first joint unit has a joint An inner side of the body forms a first keyway for receiving the first positioning key to position the first multi-core optical fiber component relative to the first joint unit, and the second multi-core optical fiber assembly includes a second butted end And the second butt end has a second positioning key, and the inner side of the inner ring of the second joint unit forms a second key groove for accommodating the second positioning key, so that the second multi-core optical fiber component The second joint unit is relatively positioned. The multi-core optical fiber connecting device of claim 1, wherein the first multi-core optical fiber assembly comprises a first butted end portion, and the second multi-core optical fiber assembly includes a first interface for interfacing with the first butted end portion a second butt end, and a set of inner seal rings disposed at the second butt end, and the inner seal ring abuts at an inner side of the inner ring. The multi-core optical fiber connecting device of claim 1, wherein the first multi-core optical fiber assembly comprises a first butted end portion, a first optical fiber cable connected to the first butted end portion, and a set of a first fiber optic cable of the first fiber optic cable, the first sleeve unit includes a first connecting tube, a first sealing ring and a first protective sleeve, the first connecting tube is connected to the joint body and has a a first tube body, the first tube body is connected to the first protective sleeve to form a first toothed end portion, and the first sealing ring is sleeved on the first fiber insulation layer and is placed on the first tube The first protective sleeve is sleeved at the first toothed end, and the second multi-core optical fiber assembly includes a second butted end for abutting the first butted end. a second fiber optic cable connected to the second butt end, and a second fiber optic insulation layer disposed on the second fiber optic cable, the second sleeve unit including a second connecting tube and a second sealing a second protective tube connecting the outer ring and having a second tube body, the second tube body One end connected to the second protective sleeve forms a second toothed end, and the second sealing ring is sleeved on the second fiber insulation layer and is inserted in the second toothed end, and the second protection The sleeve is sleeved at the second toothed end. The multi-core optical fiber connecting device of claim 4, wherein the joint body is provided with an internal thread, and the first tubular body is provided with a mating external thread to lock the joint body and the first connecting tube The outer ring is provided with an internal thread, and the second tube body is provided with a matching external thread to lock and fix the outer ring and the second connecting tube. The multi-core optical fiber connecting device according to any one of claims 1 to 3, wherein the joint body is provided with an internal thread, the first sleeve unit includes a first connecting tube, and the first connecting tube is connected to the joint body and Having a first tubular body, and the first tubular body is provided with a matching external thread, so that the joint body is locked and fixed with the first connecting pipe, the outer ring is provided with an internal thread, and the second casing unit The second connecting tube is connected to the outer ring and has a second tube body and the second tube body is provided with a matching external thread to lock the outer ring with the second connecting tube fixed.