JP3236899U - Fiber Optic Connector and Fiber Optic Connection Assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber connector and an optical fiber connection assembly for providing a high-density integrated optical fiber group. An optical fiber connector 100 includes a housing 110, a core tube, a sleeve assembly, and a pull strip. The core tube is installed in the housing, and a part thereof protrudes into the housing. The sleeve assembly is installed in the housing and is laid on a portion of the core tube. The pull strip 120 is installed in the housing and has elasticity. When no force is applied, a portion of the pull strip forms an arcuate ridge, but when the pull strip is pulled out, the arcuate ridge flattens. Also provided is a fiber optic connection assembly 10. [Selection diagram] Fig. 3

Description

The present invention relates to fiber optic connectors and fiber optic connection assemblies.

Since optical fiber has advantages such as high frequency and low loss, it has been widely used as a signal transmission medium in recent years. With the expansion of optical communication network technology, wide area networks such as the Internet and internal networks have become widespread. At the same time, communication traffic also increased.

Typically, a typical fiber optic connector is coupled to a male fiber optic connector by a female adapter, and the female adapter is installed in the electronic device. By inserting and arranging the male fiber optic connector in the female adapter, the connection relationship can be configured and the purpose of fixation and data transmission can be achieved at the same time.

In addition, with the development of technology, due to the demand of industry, the optical fiber connector has an SPF (Small Form-Factor Pluggable) interface having a hot swapping function, an SFF (Small Form Factor) interface, and a QSFP + having a high-speed transmission function. / QSFP DD / OSFP etc. have been developed. However, in the current state of these products, in many cases, the size structure is large, the space occupancy is high, and the optical path spacing cannot be effectively reduced, so that the requirements for the wiring density of 5G communication cannot be satisfied.

To give an example, FIG. 1 is an enlarged view of some members of an existing optical fiber connector. The related sizes are housing size A = 4.47 mm, housing size B = 4.47 mm, core tube outer diameter size C = 1.25 mm, and sleeve outer diameter size D = 3 mm. Further, FIG. 2 is a schematic view of a part of the optical fiber adapter corresponding to the optical fiber connector shown in FIG. 1, that is, the two optical fiber connectors shown in FIG. 1 are adapted to be accommodated in the adapter. Can be done. The relevant sizes of the adapter are sleeve outer diameter size E = 1.62 mm, sleeve inner diameter size F = 1.25 mm, and adapter sleeve spacing G (any adjacent adjacent after integrating multiple fiber optic connectors into the adapter). (Corresponding to the distance between the optical paths of the two optical fiber connectors) = 6.25 mm.

At the same time, for users, after the above-mentioned optical fiber connector with high-density wiring and the corresponding adapter are produced, the problem of how to install and remove (insert and remove) smoothly and conveniently with it. Occurs.

Based on the above, related engineers think and overcome how to form a high-density integrated structure of fiber optic connectors and adapters in combination with a simple structure, and at the same time make it convenient for the user to remove. It has become an issue to be addressed.

The present invention provides fiber optic connectors and fiber optic connection assemblies that provide a densely integrated set of fiber optics.

The fiber optic connector of the present invention includes a housing, a core tube, a sleeve assembly, and a pull strip. The core tube is installed in the housing, and a part thereof protrudes into the housing. The sleeve assembly is installed in the housing and is laid on a portion of the core tube. The pull strip is installed in the housing and has elasticity. When no force is applied, a portion of the pull strip forms an arcuate ridge, but when the pull strip is pulled out, the arcuate ridge flattens.

In one embodiment of the invention, the top of the housing has an assembly hole, the pull strip has an assembly ridge, and the assembly ridge is assembled into the assembly hole to form a tight fit. Secure one end of the pull strip to the top of the housing.

In one embodiment of the invention, the sides of the enclosure have a position limiting slot, the pull strip further has a guide hook, and the guide hook is slidably connected to the position limiting slot. ..

In one embodiment of the present invention, the extending direction of the position limiting slot coincides with the insertion / removal direction of the optical fiber connector, and the drawing direction of the pull strip is limited.

In one embodiment of the invention, the pull strip has a fixed end and a free end, the fixed end is fixed to the housing, and the free end flattens the arcuate protrusion when a force is applied. The guide hook is located between the free end and the arcuate protrusion.

In one embodiment of the invention, the sleeve assembly includes a first sleeve, a spring, a second sleeve, a third sleeve, and a tail cover. A part of the core tube is inserted into the first sleeve, a spring is sewn into the first sleeve, the second sleeve is locked in the housing, and a part of the second sleeve is in the third sleeve. The third sleeve is inserted into the tail cover.

In one embodiment of the invention, the first sleeve has a stop convex and the spring abuts on the stop convex.

In one embodiment of the present invention, the side portion of the housing has a locking hole, the second sleeve has a locking convex portion, and the locking convex portion is locked in the locking hole. To.

In one embodiment of the invention, the spring is 5.5 mm to 6.0 mm in length, 0.23 mm in wire diameter, and is used to support a force of 5 Newtons to 6 Newtons. ..

In one embodiment of the present invention, the outer diameter of the core tube is 0.6 mm to 0.8 mm.

The fiber optic connection assembly of the present invention includes an adapter and a plurality of the fiber optic connectors described above. The adapter includes a body, a plurality of fixing sleeves, and a fixing rack, the body having front and rear sides facing each other, and the fixing rack being installed on the front side of the body. The main body has a plurality of insertion holes, and the fixing sleeve is installed in the insertion hole and the fixing rack, respectively. The fiber optic connector is batting from the rear side of the main body to the adapter, and each core tube is fixed correspondingly in the fixing sleeve.

In one embodiment of the invention, the body has a plurality of engaging holes and the pull strip of each fiber optic connector has a fitting protrusion. When the fiber optic connector is batting on the adapter, the fitting protrusion is locked corresponding to the engagement hole. When a force is applied to the pull strip to flatten the arcuate protrusion, the fitting protrusion comes out of the engagement hole.

In one embodiment of the invention, the engagement holes are located at the top of the body and at the bottom of the body, respectively. The fiber optic connectors batting on the adapter are in two rows and parallel to each other. The above two rows are upside down.

In one embodiment of the invention further comprises a protective cover assembled on or removed from the front side of the body.

In one embodiment of the invention, further, at least one protection used to assemble or remove the fiber optic connector on the rear side of the body into at least one unbatted insertion hole. Includes sleeve.

In one embodiment of the present invention, the pitch rows of the two adjacent insertion holes are 2.3 mm to 2.8 mm.

In one embodiment of the present invention, the inner diameter of the fixed sleeve is 0.58 mm to 0.78 mm.

As described above, the optical fiber connector of the present invention is reduced in size, and at the same time, its structure is further adjusted so that it can be assembled into one with an adapter to form a high-density integrated structure. The fiber optic connector installs a pullable pull strip on the top plate of the housing, the pull strip has a fitting protrusion for fitting into the adapter, and the pull strip is more elastic and forceful. Since the arc-shaped protrusion is formed when the The purpose of freeing the fiber optic connector from the adapter can be achieved. Conversely, when the fiber optic connector is plugged into the adapter, it passes through the core tube of the fiber optic connector and is secured to the fixing sleeve of the adapter, and the above-mentioned fitting protrusion is locked to the engagement hole, so that the fiber optic connector It is possible to maintain a fixed connection relationship between the adapter and the adapter. As a result, the optical fiber connection assembly can be smoothly reduced in size, the assembly process with the above-mentioned adapter can be performed without any trouble, and a high-density integrated structure can be formed. Accordingly, the adapter to be combined with the optical fiber connector can also be reduced in size correspondingly and can have a coupling structure compatible with the optical fiber connector, so that it also has high-density integration and the size is reduced. Fiber optic connector assembly can be assembled.

FIG. 1 is an enlarged view of some members of an existing optical fiber connector. FIG. 2 is a schematic view of a part of the optical fiber adapter. FIG. 3 is a schematic diagram of an optical fiber connection assembly according to one embodiment of the present invention. FIG. 4 is a schematic diagram of the adapter. FIG. 5 is an enlarged view of the adapter. FIG. 6 is a schematic diagram of an optical fiber connector. FIG. 7 is an enlarged view of the optical fiber connector. FIG. 8 is a cross-sectional view of the fiber optic connection assembly of FIG.

FIG. 3 is a schematic diagram of an optical fiber connection assembly according to one embodiment of the present invention. FIG. 4 is a schematic diagram of the adapter. FIG. 5 is an enlarged view of the adapter. Referring to FIGS. 3-5 at the same time, in this embodiment, the fiber optic connection assembly 10 includes an adapter 200 and a plurality of fiber optic connectors 100. The adapter 200 includes a main body 210, a plurality of fixed sleeves 230, and a fixed rack 240, the main body 210 has a front side S1 and a rear side S2 facing each other, and the fixed rack 240 is attached to the front side S1 of the main body 210. Will be installed. The main body 210 has a plurality of insertion holes 212, and the fixing sleeve 230 is installed in the insertion hole 212 and the fixing rack 240, respectively, and becomes movable along the assembly shaft. The optical fiber connector 100 is batting from the rear side S2 of the main body 210 and fixed to the adapter 200.

Referring again to FIGS. 3 and 5, in this embodiment the adapter 200 further includes a protective cover 250 and a plurality of protective sleeves 220. The protective cover 250 is assembled to or removed from the front side S1 of the main body 210. The protective sleeve 220 is used to assemble or remove the fiber optic connector 100 on the rear S2 of the body 210 into at least one unbatted insertion hole 212. Here, the protective cover 250 and the protective sleeve 220 can provide the required protective effect by assembling the adapter 200 when it is not batting on the fiber optic connector 100.

FIG. 6 is a schematic diagram of an optical fiber connector. FIG. 7 is an enlarged view of the optical fiber connector. Referring to FIGS. 6 and 7 at the same time, in the present embodiment, the optical fiber connector 100 includes a housing 110, a core tube 140, a sleeve assembly TS, and a pull strip 120. The core tube 140 is installed in the housing 110, and a part thereof protrudes into the housing 110. The sleeve assembly TS is installed in the housing 110 and is laid on a part of the core tube 140. The pull strip 120 is installed in the housing 110 and has elasticity. When no force is applied, a portion of the pull strip 120 forms an arcuate ridge 122, but when the pull strip 120 is pulled out, the arcuate ridge 122 becomes flat.

More specifically, as shown in FIG. 7, the top of the housing 110 has an assembly hole 114, the pull strip 120 has a fixed end E1 and a free end E2, and the assembly convex portion 124 of the fixed end E1. To position. The assembly convex portion 124 is assembled into the assembly hole 114 to form a tight fit, and the fixed end E1 of the pull strip 120 is fixed to the top of the housing 110. Also, the side of the housing 110 has a position limiting slot 112, the pull strip 120 further has a guide hook 126, which is slidably connected to the position limiting slot 112, thereby. , Limits the travel path when the pull strip 120 is pulled out by the user. That is, the stretching direction of the position limiting slot 112 of the present embodiment coincides with the insertion / removal direction of the optical fiber connector 100, and the user also pulls out the pull strip 120 based on this insertion / removal direction (pull-out direction and insertion / removal direction). Matches). Briefly explaining the pull strip 120 of the present embodiment, the fixed end E1 is used to be fixed to the top of the housing 110, and the free end E2 flattens the arcuate protrusion 122 when a force is applied. , The guide hook 126 is located between the free end E2 and the arcuate protrusion 122.

As shown in FIG. 7, the top of the housing 110 further has a chute 111. The pull strip 120 near the second half of the free end E2 slides into contact with the chute 111, and the pull strip 120 near the first half of the fixed end E1 passes through the arcuate protrusion 122 to the second half of the pull strip 120. Since it is connected and there is a step between the first half and the second half, the user can flatten the arcuate protrusion 122 and pull out the fitting protrusion 123 from the engagement hole 211.

Further, the sleeve assembly TS of the present embodiment includes a first sleeve 150, a spring 160, a second sleeve 170, a third sleeve 180, and a tail cover 190. A part of the core tube 140 is inserted into the first sleeve 150, the spring 160 is sewn into the first sleeve 150, the second sleeve 170 is locked in the housing 110, and the second sleeve 170 A portion is inserted into the third sleeve 180, and the third sleeve 180 is inserted into the tail cover 190. The optical fiber connector 100 of the present embodiment further includes a protective cover 130 assembled in the opening 115 of the housing 110, and covers and protects the core tube 140 protruding from the housing 110.

FIG. 8 is a cross-sectional view of the fiber optic connection assembly of FIG. Referring to FIGS. 7 and 8 at the same time, since the first sleeve 150 has a stop protrusion 151 (for example, an outer ring structure on the outer surface of the first sleeve 150), when the spring 160 is installed on the first sleeve 150, It can be brought into contact with the stop convex portion 151. The side portion of the housing 110 has a locking hole 113, and the second sleeve 170 has a locking convex portion 171 (for example, an unsealed outer ring structure on the outer surface of the second sleeve 170), so that the second sleeve 170 has a second. When the sleeve 170 is incorporated into the housing 110, the locking convex portion 171 can be locked in the locking hole 113 to complete the fixing of the member. Here, since the spring 160 has a length of 5.5 mm to 6.0 mm, a wire diameter of 0.23 mm, and is used to support a force of 5 Newton to 6 Newton, the optical fiber connector 100 Can maintain the required assembly capacity in response to size reductions. At the same time, the stop convex portion 151 of the first sleeve 150 is brought into contact with the inner stop structure of the housing 110 (the abutted portion on the left side of the stop convex portion 151 as shown in FIG. 8), and the housing of the core tube 140 is held. Limit the position relative to the body 110.

Referring to FIGS. 3 and 8 at the same time, in the present embodiment, the main body 210 of the adapter 200 has a plurality of engaging holes 211, and the pull strip 120 of each optical fiber connector 100 has an inset convex portion 123. It is located between the arcuate protrusion 122 and the fixed end E1. When the fiber optic connector 100 is batted to the adapter 200, the core tube 140 is correspondingly fixed in the fixing sleeve 230, and the fitting protrusion 123 is locked corresponding to the engagement hole 211. To. When a force is applied to the pull strip 120 (in FIG. 8, the user provides a rightward force to pull out the pull strip 120) to flatten the arcuate protrusion 122, the above-mentioned step is present. The fitting convex portion 123 can be smoothly removed from the engaging hole 211, and the optical fiber connector 100 can be removed from the adapter 200.

Referring again to FIGS. 1, 4, and 8, the adapter 200 of this embodiment is used to insert a plurality of fiber optic connectors 100 to form a high density integrated structure. The plurality of engagement holes 211 of the main body 210 are located at the top and bottom of the main body 210, respectively, and the optical fiber connectors 100 batting on the adapter 200 are in two rows and parallel to each other. The two rows described above are upside down to form a 2x6 array. Here, in order to smoothly assemble the core tube 140 of the optical fiber connector 100 to the fixed sleeve 230, the pitch row d1 of the two adjacent insertion holes 212 (at the same time, corresponds to the optical path of the two adjacent optical fiber connectors 100). ) Is 2.3 mm to 2.8 mm. Here, the inner diameter of the fixed sleeve 230 is 0.58 mm to 0.78 mm so as to match the core tube 140 having an outer diameter of 0.6 mm to 0.8 mm.

As described above, in the above-described embodiment of the present invention, the optical fiber connector is further adjusted in size so that it can be assembled into one with the adapter to form a high-density integrated structure. The fiber optic connector installs a pullable pull strip on the top plate of the housing, the pull strip has a fitting protrusion for fitting into the adapter, and the pull strip is more elastic and forceful. Since the arc-shaped protrusion is formed when the The purpose of freeing the fiber optic connector from the adapter can be achieved. Conversely, when the fiber optic connector is plugged into the adapter, it passes through the core tube of the fiber optic connector and is secured to the fixing sleeve of the adapter, and the above-mentioned fitting protrusion is locked to the engagement hole, so that the fiber optic connector It is possible to maintain a fixed connection relationship between the adapter and the adapter. As a result, the optical fiber connection assembly can be smoothly reduced in size, the assembly process with the above-mentioned adapter can be performed without any trouble, and a high-density integrated structure can be formed. Accordingly, the adapter to be combined with the optical fiber connector can also be reduced in size correspondingly and can have a coupling structure compatible with the optical fiber connector, so that it also has high-density integration and the size is reduced. Fiber optic connector assembly can be assembled.

10 Fiber Optic Connector Assembly 100 Fiber Optic Connector 110 Housing 111 Chute 112 Position Restriction Slot 113 Locking Hole 114 Assembly Hole 120 Pull Strip 122 Arc Convex 123 Fitting Convex 124 Assembly Convex 126 Guide Hook 130 Protective Cover 140 Core Tube 150 1st sleeve 151 Stop convex 160 Spring 170 2nd sleeve 171 Locking convex 180 3rd sleeve 190 Tail cover 200 Adapter 210 Main body 211 Engagement hole 212 Insert hole 220 Protective sleeve 230 Fixed sleeve 240 Fixed rack 250 Protection Covers A, B Housing sizes C, D, E External size F Inner diameter size G Spacing E1 Fixed end E2 Free end d1 Pitch row S1 Front side S2 Rear side TS sleeve assembly

Claims (17)

With the housing
A core tube installed in the housing and partially protruding into the housing,
A sleeve assembly installed in the housing and draped over a portion of the core tube.
A pull strip installed in the housing and having elasticity,
An optical fiber connector in which a part of the pull strip forms an arcuate protrusion when no force is applied, but when the pull strip is pulled out by applying a force, the arcuate protrusion becomes flat. The top of the housing has an assembly hole, the pull strip has an assembly convex portion, and the assembly convex portion is assembled into the assembly hole to form a tight fit, and one end of the pull strip is formed. The optical fiber connector according to claim 1, which is fixed to the top of the housing. The first aspect of claim 1, wherein the side portion of the housing has a position limiting slot, the pull strip further has a guide hook, and the guide hook is slidably connected to the position limiting slot. Fiber optic connector. The optical fiber connector according to claim 3, wherein the extension direction of the position limiting slot coincides with the insertion / removal direction of the optical fiber connector, and the drawing direction of the pull strip is restricted. The pull strip has a fixed end and a free end, the fixed end is fixed to the housing, the free end flattens the arcuate protrusion when a force is applied, and the guide hook. The optical fiber connector according to claim 3, which is located between the free end and the arcuate protrusion. The sleeve assembly
The first sleeve into which a part of the core tube is inserted,
The spring sewn on the first sleeve and
The second sleeve locked in the housing and
With the third sleeve into which a part of the second sleeve is inserted,
With the tail cover into which the third sleeve is inserted,
The optical fiber connector according to claim 1. The optical fiber connector according to claim 6, wherein the first sleeve has a stop convex portion, and the spring abuts on the stop convex portion. 6. The sixth aspect of claim 6, wherein the side portion of the housing has a locking hole, the second sleeve has a locking convex portion, and the locking convex portion is locked in the locking hole. Fiber optic connector. 6. According to claim 6, the length of the spring is 5.5 mm to 6.0 mm, the wire diameter is 0.23 mm, and the spring is used to support a force of 5 Newton to 6 Newton. The fiber optic connector described. The optical fiber connector according to claim 1, wherein the core tube has an outer diameter of 0.6 mm to 0.8 mm. The optical fiber connector according to any one of claims 1 to 10.
With an adapter that includes the body, multiple fixing sleeves, and a fixed rack,
The main body has front and rear sides facing each other, the fixing rack is installed on the front side of the main body, the main body has a plurality of insertion holes, and the fixing sleeve has a plurality of insertion holes. Installed in the insertion hole and the fixing rack, respectively, the fiber optic connector is batted to the adapter from the rear side of the main body, and the core tube is fixed correspondingly in the fixing sleeve. Fiber optic connection assembly. When the main body has a plurality of engaging holes, the pull strip of each optical fiber connector has a fitting convex portion, and the optical fiber connector is batted to the adapter, the fitting convex portion is formed. 11. The fitting protrusion is pulled out from the engaging hole when the arc-shaped protrusion is flattened by applying a force to the pull strip. Fiber optic connection assembly. The engagement holes are located at the top of the body and the bottom of the body, respectively, and the fiber optic connectors batting on the adapter are in two rows and parallel to each other, with the two rows upside down. The optical fiber connection assembly according to claim 12. 11. The fiber optic connection assembly of claim 11, further comprising a protective cover assembled on or removed from the front side of the body. A claim further comprising at least one protective sleeve that is assembled into or used to be removed from the insertion hole in at least one insertion hole that does not batting the fiber optic connector on the rear side of the body. 11. The fiber optic connector assembly according to 11. The optical fiber connection assembly according to claim 11, wherein the pitch rows of the two adjacent insertion holes are 2.3 mm to 2.8 mm. The optical fiber connection assembly according to claim 11, wherein the fixing sleeve has an inner diameter of 0.58 mm to 0.8 mm.

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