TWI728867B - Optical fiber connection components - Google Patents

Abstract

An optical fiber connection assembly includes an adapter, an optical fiber connector, and an independent fixed sleeve. The adapter has a housing, a ferrule channel formed in the housing, and a connecting sleeve corresponding to the rear end of the ferrule channel and extending backward from the housing. The connecting sleeve has two sides and formed from back to front. Two side slots, and two retaining sections separated by slots on both sides. The optical fiber connector includes a ferrule suitable for arranging the optical fiber and a holder provided on the ferrule. The holder is sleeved on the ferrule and has a flange protrudingly formed on the outer surface, and the holder is inserted into the connecting sleeve and protrudes. The edge is held between the two holding sections. The fixing sleeve is sleevedly assembled outside the connecting sleeve, and limits the distance between the two holding sections of the connecting sleeve, and prevents the optical fiber connector from being detached backward from the connecting sleeve.

Description

Optical fiber connection components

The invention relates to an optical fiber connection assembly, in particular to an optical fiber connection assembly with an optical fiber connector.

United States Patent Publication No. US5,774,611 discloses an optical fiber socket. The housing of the optical fiber socket includes an independent external component and an independent internal component. The internal component is provided with a first ferrule for inserting a first ferrule and aligning an optical fiber. A sleeve tube of the second ferrule of the connector, and the internal component has a first hook part for hooking the octagonal cylinder of the flange on the first ferrule. However, the first ferrule in this type of optical fiber socket is only hooked and fixed by the first hook. When the first ferrule is stressed, such as when the first ferrule is pulled, or the second ferrule is excessively When pushing onto the first ferrule, it is possible that it will detach from the buckle of the first hook part backwards. Therefore, the structure of the optical fiber socket needs to be improved.

Therefore, an object of the present invention is to provide an optical fiber connection assembly that can improve at least one of the above-mentioned problems in the prior art.

Therefore, in some embodiments, the optical fiber connection assembly of the present invention includes an adapter, an optical fiber connector, and an independent fixing sleeve. The adapter has a housing, a ferrule channel formed in the housing, and a connecting sleeve corresponding to the rear end of the ferrule channel and extending rearward from the housing, the connecting sleeve having Two side grooves located on both sides and formed from rear to front, and two holding sections separated by the grooves on both sides. The optical fiber connector includes a ferrule suitable for arranging an optical fiber, and a holder provided on the ferrule, the ferrule is correspondingly inserted into the ferrule channel through the connecting sleeve, and the holder is sleeved The ferrule has a flange protrudingly formed on the outer surface, the holder is inserted into the connecting sleeve and the flange is held between the two holding sections. The fixing sleeve is sleevedly assembled outside the connecting sleeve, and limits the distance between the two holding sections of the connecting sleeve, and prevents the optical fiber connector from being detached backward from the connecting sleeve.

In some embodiments, the retaining section of the connecting sleeve has a stopper, the fixed sleeve has a fastener that is stopped by the stopper in a backward direction, and a stopper in the backward direction. Stopper for stopping the flange of the optical fiber connector.

In some embodiments, the fixing sleeve further has a guide bar formed on the inner wall surface and correspondingly accommodated in the side slot, and the stopper is located behind the guide bar.

In some embodiments, the side slot of the connecting sleeve is wide in the back and narrow in the front, and the stopper extends into the rear end opening of the side slot.

In some embodiments, the fixing sleeve further has side slits penetrating back and forth.

In some embodiments, the fastener of the fixing sleeve is an elastic fastener, and the holding section of the connecting sleeve further has an outer flange formed at the rear end and facing outward, and a holding part formed on the inner wall surface. A hole, the front end surface of the outer flange forms the stop portion for stopping the elastic fastener, and the holding hole corresponds to the flange accommodating the optical fiber connector.

In some embodiments, the cross section of the flange is polygonal to form a plurality of corner edges arranged at intervals, and the retaining hole corresponds to one of the corner edges of the flange accommodating the optical fiber connector.

In some embodiments, the flange further has a shoulder at the rear end corresponding to the inner wall surface of the holding hole, and a tapered part at the front end that tapers forward, and the connecting sleeve also has a self-contained The ferrule channel gradually expands backward and corresponds to the push-pull portion of the tapered portion accommodating the flange.

In the present invention, the independent fixed sleeve can be directly slid-in type sleeved, buckled, and assembled on the connecting sleeve, and the operation is easy and simple. With the fixing sleeve sleeved outside the connecting sleeve, the distance between the two holding sections of the connecting sleeve can be reliably restricted to prevent the two holding sections from opening, and the The optical fiber connector is detached backward from the connecting sleeve. In addition, the fixing sleeve can push the optical fiber connector that has not completely reached the positioning position.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

1 to 3, a first embodiment of the optical fiber connection assembly 100 of the present invention is suitable for plugging with an optical fiber connector 200. In the first embodiment, the optical fiber connector 200 is an LC type optical fiber connector , But in other embodiments, it can also be an SC-type optical fiber connector or other types of optical fiber connectors. The optical fiber connection assembly 100 includes an adapter 1 (adapter), two optical fiber connectors 2 and two independent fixing sleeves 3.

2 to 4, the adapter 1 has a housing 11, which is formed along a front-rear direction D1 (the arrow points to the front, the reverse is the rear) in the housing 11 at the near rear end and along a left-right direction D2 (arrow Pointing to the right, the reverse is to the left) two ferrule channels 12 arranged side by side at intervals, and two connecting sleeves 13 corresponding to the rear ends of the two ferrule channels 12 and extending backward from the housing 11, And two slots 10 formed on the front side of the housing 11 from front to back and corresponding to the two ferrule channels 12 respectively. The two slots 10 are for the optical fiber connector 200 to be inserted into, and the front ends of the two ferrule channels 12 extend into the two slots 10 respectively. Each connecting sleeve 13 has two side grooves 131 located on the left and right sides and formed from rear to front, and are spaced apart by the grooves 131 on both sides along a vertical direction D3 (the arrow points upward, the reverse is downward) The two holding segments 132. It should be noted that the number of the ferrule channels 12, the connecting sleeve 13 and the slots 10 can be adjusted according to requirements, and they can be one or more than three, instead of the number in the first embodiment. As a restriction.

The two fiber optic connectors 2 are respectively disposed on the two connecting sleeves 13, and each fiber optic connector 2 includes a ferrule 21 suitable for arranging the optical fiber F1 and a holder 22 disposed on the ferrule 21. The ferrule 21 is correspondingly inserted into the rear end of the corresponding ferrule channel 12 along the front-rear direction D1 via the corresponding connecting sleeve 13. The holder 22 has a tube 221 sleeved on the rear end of the ferrule 21 and accommodating the optical fiber F1, and a flange 222 protrudingly formed on the outer side surface of the ferrule 21. The holding member 22 is inserted into the corresponding connecting sleeve 13 and the flange 222 is held between the two holding sections 132. In the first embodiment, each holding section 132 of each connecting sleeve 13 has a holding hole 132a formed on the inner wall surface and penetrating up and down, and the holding hole 132a corresponds to the flange 222 of the optical fiber connector 2. . The cross section of the flange 222 is polygonal and has a plurality of corner edges 222a arranged at intervals, a shoulder 222b located at the rear end of the flange 222 (the shoulder 222b is also located at the rear end of the corner edges 222a), and A tapered portion 222c located at the front end of the flange 222 and tapered forward. The retaining hole 132a corresponds to one of the corner edges 222a of the flange 222 of the optical fiber connector 2, and the shoulder 222b corresponds to the inner wall surface of the retaining hole 132a at the rear end and is limited by the inner wall surface to The flange 222 of the optical fiber connector 2 is prevented from being detached from the connecting sleeve 13 backward. In addition, each connecting sleeve 13 further has a push-pull portion 133 that gradually expands backward from the rear end of the ferrule channel 12 and corresponds to the tapered portion 222 c of the flange 222. In the first embodiment, the upper part and the lower part of the pushing portion 133 are respectively formed on the two holding sections 132 of the connecting sleeve 13. When the optical fiber connector 2 is assembled to the connecting sleeve 13, the tapered portion 222c at the front end of the flange 222 can expand the two holding sections 132 of the connecting sleeve 13 first until the corner edge of the flange 222. After the portion 222a enters the corresponding retaining hole 132a, the two retaining segments 132 are reset. The shoulder portion 222b corresponds to the inner wall surface of the retaining hole 132a at the rear end and is restricted by the inner wall surface, and connects the inner wall surface of the sleeve 13 The pushing part 133 can guide the ferrule 21 to be inserted into the ferrule channel 12 to complete the assembly of the optical fiber connector 2 and the connecting sleeve 13.

Referring to FIGS. 2 to 3 and 5 to 6, the two independent fixing sleeves 3 are sleeved and assembled outside the two connecting sleeves 13. Each holding section 132 of each connecting sleeve 13 also has an outer flange 132b formed at the rear end and facing outward. In the first embodiment, the upper holding section 132 forms the outer flange 132b facing upwards. For the flange 132b, the lower retaining section 132 forms the outer flange 132b downward, and the front end surface of each outer flange 132b forms a stop portion 132c. Each fixing sleeve 3 has two elastic fasteners 31 that are blocked by the blocking portions 132c of the two retaining sections 132 in the backward direction and are respectively arranged in the up and down direction D3, and block in the backward direction. The shoulder 222b of the flange 222 of the optical fiber connector 2 and two stoppers 32 respectively arranged in the left and right direction D2. The two stoppers 32 are formed in the fixing sleeve 3 in the first embodiment. Wall surface. The independent fixing sleeve 3 can be directly slid-in sleeved, buckled, and assembled to the connecting sleeve 13, and the operation is easy and simple. The two fixing sleeves 3 sleevedly assembled outside the two connecting sleeves 13 limit the distance between the two holding sections 132 of the connecting sleeve 13 and prevent the two holding sections of the connecting sleeve 13 132 is opened so that the flange 222 of the optical fiber connector 2 is held in the holding holes 132a of the two holding sections 132 of the connecting sleeve 13, and the optical fiber connector is blocked in the backward direction. The stopper 32 of the fixing sleeve 3 of the flange 222 of the flange 222 can surely prevent the optical fiber connector 2 from being detached from the connecting sleeve 13 backward.

It should be noted that, as shown in the figure, the stop portion 132c extends into the holding hole 132a, so in other embodiments, the connecting sleeve 13 may not be formed with the outer flange 132b. In this case, The stopping portion 132c may be formed on the inner wall surface of the holding hole 132a at the rear end; in another modified embodiment, an additional engaging hole may be provided behind the holding hole 132a for receiving the elastic fastener 31 to stop The portion 132c may be an inner wall surface formed at the rear end of the engaging hole. In addition, the elastic fastener 31 has an elastic arm extending backward and a buckle block forming the end of the elastic arm.

In addition, in the first embodiment, the side slot 131 of the connecting sleeve 13 is wide in the rear and narrow in the front, and the fixed sleeve 3 is formed on the inner wall surface and facing forward from the rear end of the stopper 32. An extended guide strip 33, and a side slit 34 formed on the fixed sleeve 3 and penetrated back and forth. In the first embodiment, the side slit 34 is adjacent to one of the stoppers 32 and one of the guide strips 33. The stopper 32 and the guide strip 33 are correspondingly accommodated in the side slot 131 of the connecting sleeve 13. The side slot 131 is wide in the rear and narrow in the front and the guide strip 33 and the side slot 131 cooperate to make The fixing sleeve 3 and the connecting sleeve 13 can be easily inserted and guided to align during the assembly process, and the stopper 32 extends into the wider rear end opening of the side slot 131 after assembly. Thereby, the assembly strength between the fixing sleeve 3 and the connecting sleeve 13 can be further strengthened. When the optical fiber connector 2 has been assembled in the adapter 1 in advance, the fixing sleeve 3 can pass through the optical fiber F1 through the side slit 34, so that the fixing sleeve 3 can be directly The sleeve is buckled outside the connecting sleeve 13, so that the fixing sleeve 3 can be selectively installed later, and the optical fiber connector 2 does not need to be removed during installation. In addition, the side slits 34 can also make the fixing sleeve 3 elastically expand and deform more easily, so that the fixing sleeve 3 can be sleeved on the connecting sleeve 13 or detached more easily. When the fixing sleeve 3 is assembled to the connecting sleeve 13, the guide strip 33 first enters from the wider rear opening of the side slot 131 of the connecting sleeve 13, and then the elastic fastener 31 elastically passes over the holding section 132 The outer flange 132b of the outer flange 132b is stopped by the stop portion 132c formed by the front end surface of the outer flange 132b, and the stopper 32 extends into the wider rear end opening of the side slot 131. If the optical fiber connector 2 is relative to The connecting sleeve 13 has not reached the positioning, and the stopper 32 can further push up the shoulder 222b of the flange 222 of the optical fiber connector 2, so that the optical fiber connector 2 is fully positioned, thereby completing the optical fiber connector 2, the fixing sleeve 3 and the connection Assembly of sleeve 13.

1 to 2 and 6 to 7, in detail, the adapter 1 further has a corresponding connection to the two connecting sleeves 13 and extending forwardly formed in the two slots 10 and surrounding the ferrule The channel 12 extends into the mating sleeve 14 in the slot 10 and the alignment sleeves 15 respectively located in the ferrule channel 12. Each alignment sleeve 15 is arranged in the corresponding ferrule channel 12, and the front end of the ferrule 21 of the aforementioned optical fiber connector 2 is accommodated in the alignment sleeve 15. The front ends of the two ferrule channels 12 of the adapter 1 are for the optical fiber connector 200 to be inserted into. The optical fiber connector 200 has a housing 201 formed with a mating groove 201a for accommodating the mating sleeve 14, and a housing 201 suitable for arranging the optical fiber F2 and protruding from the mating groove 201a of the housing 201 and used for inserting into the mating groove 201a of the housing 201. A ferrule 202 of the alignment sleeve 15 in the mating sleeve 14, a ferrule sleeve 203 sleeved on the ferrule 202 and located in the housing 201, an outer sleeve 204 assembled on the housing 201, and A pressing spring 205 between the ferrule sleeve 203 and the outer sleeve 204. The alignment sleeve 15 aligns the ferrule 202 of the optical fiber connector 200 and the ferrule 21 of the optical fiber connector 2 with each other, and the pressure spring 205 faces the ferrule 202 and the ferrule sleeve 203 toward each other. The alignment sleeve 15 is pressed and pushed so that the ferrule 202 of the optical fiber connector 200 is pressed against the ferrule 21 of the optical fiber connector 2 to ensure that the optical fiber F2 of the optical fiber connector 200 and the optical fiber The optical signal is transmitted between the optical fiber F1 of the connector 2.

Referring to FIG. 8, the difference between the second embodiment of the optical fiber connection assembly 100 of the present invention and the first embodiment is that each fixing sleeve 3 also has a connection between the upper and lower walls of the side slit 34 A connecting post 35 can strengthen the structural strength of the fixed sleeve 3 through the connecting post 35, and enable the fixed sleeve 3 to be assembled to the connecting sleeve 13 more stably. When the fixing sleeve 3 needs to be disassembled, the connecting post 35 can be cut so that the fixing sleeve 3 can be detached from the connecting sleeve 13 and the optical fiber F1.

In summary, in the present invention, the independent fixing sleeve 3 can be directly slid-in type sleeved, buckled, and assembled to the connecting sleeve 13, and the operation is easy and simple. As the fixing sleeve 3 is sleeved outside the connecting sleeve 13, the distance between the two holding sections 132 of the connecting sleeve 13 can be reliably restricted to prevent the two holding sections 132 from being opened. The optical fiber connector 2 is surely prevented from being detached from the connecting sleeve 13 backward. In addition, the fixing sleeve 3 can push the optical fiber connector 2 that has not completely reached the positioning position.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

100: Optical fiber connection components 1: adapter 10: Slot 11: shell 12: Ferrule channel 13: connecting sleeve 131: side slot 132: hold segment 132a: Keep hole 132b: Outer flange 132c: stop 133: Promotion Department 14: Butt sleeve 15: Align the casing 2: Optical fiber connector 21: Ferrule 22: Holder 221: Tube Body 222: Flange 222a: Corner edge 222b: Shoulder 222c: tapered part 3: fixed sleeve 31: Elastic fastener 32: stop 33: guide strip 34: Side slit 35: connecting column 200: fiber optic connector 201: Shell 201a: butt groove 202: Ferrule 203: Ferrule sleeve 204: Jacket 205: Pressure spring F1: Fiber F2: Optical fiber D1: front and rear direction D2: Left and right direction D3: Up and down direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view of a first embodiment of the optical fiber connection assembly of the present invention and an optical fiber connector; Figure 2 is a perspective exploded view of the first embodiment; 3 is a perspective exploded view of the first embodiment in FIG. 2 viewed from another angle of view; Figure 4 is a perspective exploded view of the optical fiber connector of the first embodiment; 5 is a perspective exploded view of the first embodiment, illustrating the assembly structure of the fixing sleeve and the adapter of the first embodiment; Figure 6 is a cross-sectional view of the first embodiment; FIG. 7 is a cross-sectional view of the first embodiment and the optical fiber connector; and Fig. 8 is an exploded perspective view of a second embodiment of the optical fiber connection assembly of the present invention.

100: Optical fiber connection components

1: adapter

11: shell

12: Ferrule channel

13: connecting sleeve

131: side slot

132: hold segment

132a: Keep hole

132b: Outer flange

132c: stop

133: Promotion Department

2: Optical fiber connector

21: Ferrule

22: Holder

221: Tube Body

222: Flange

222a: Corner edge

222b: Shoulder

222c: tapered part

3: fixed sleeve

31: Elastic fastener

32: stop

33: guide strip

34: Side slit

F1: Fiber

D1: front and rear direction

D2: Left and right direction

D3: Up and down direction

Claims (8)

An optical fiber connection assembly, including: The adapter has a housing, a ferrule channel formed in the housing, and a connecting sleeve corresponding to the rear end of the ferrule channel and extending rearward from the housing. The connecting sleeve has a Two side slots on both sides and formed from back to front, and two retaining sections separated by the slots on both sides; The optical fiber connector includes a ferrule suitable for arranging an optical fiber, and a holder provided on the ferrule, the ferrule is correspondingly inserted into the ferrule channel through the connecting sleeve, and the holder is sleeved on The ferrule has a flange protrudingly formed on the outer surface, the holder is inserted into the connecting sleeve, and the flange is held between the two holding sections; An independent fixing sleeve, sleevedly assembled outside the connecting sleeve, and limiting the distance between the two holding sections of the connecting sleeve, and preventing the optical fiber connector from being detached backward from the connecting sleeve . The optical fiber connection assembly according to claim 1, wherein the holding section of the connecting sleeve has a stopper, and the fixed sleeve has a fastener that is stopped by the stopper in a backward direction, and A stopper that stops the flange of the optical fiber connector in a backward direction. The optical fiber connection assembly according to claim 2, wherein the fixing sleeve further has a guide bar formed on the inner wall surface and correspondingly accommodated in the side slot, and the stopper is located behind the guide bar . The optical fiber connection assembly according to claim 3, wherein the side slot of the connecting sleeve is wide in the back and narrow in the front, and the stopper extends into the rear opening of the side slot. The optical fiber connection assembly according to claim 4, wherein the fixing sleeve further has side slits penetrating back and forth. The optical fiber connection assembly according to any one of claims 2 to 5, wherein the fastener of the fixing sleeve is an elastic fastener, and the holding section of the connecting sleeve further has a rear end and facing outward The outer flange is formed, and a holding hole formed on the inner wall surface, the front end surface of the outer flange constitutes the stopping portion for stopping the elastic fastener, and the holding hole correspondingly accommodates the optical fiber The flange of the joint. The optical fiber connection assembly according to claim 6, wherein the cross section of the flange is polygonal to form a plurality of corners arranged at intervals, and the holding hole corresponds to one of the corners of the flange accommodating the optical fiber connector Rim. The optical fiber connection assembly according to claim 7, wherein the flange further has a shoulder at the rear end corresponding to the inner wall surface of the holding hole, and a tapered part at the front end that tapers forward, the The connecting sleeve also has a push-pull portion that gradually expands backward from the ferrule channel and correspondingly accommodates the tapered portion of the flange.

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