CN214669718U - Optical fiber connector and optical fiber connecting assembly - Google Patents

Abstract

The utility model relates to an optical fiber connector, including casing, core pipe, thimble assembly and brace. The core tube is arranged in the shell and partially protrudes out of the shell. The sleeve pipe assembly is arranged on the shell and sleeved on the local part of the core pipe. The brace is arranged on the shell and has elasticity. When the force is not applied, the arc-shaped bulge is formed on the part of the pulling strip, and when the pulling strip is pulled, the arc-shaped bulge is leveled. An optical fiber connecting assembly is also disclosed.

Description

Optical fiber connector and optical fiber connecting assembly

Technical Field

The utility model relates to an optical fiber connector and optical fiber coupling assembling.

Background

Since the optical fiber has the advantages of high bandwidth and low loss, it has been widely used as a transmission medium of signals in recent years, and along with the technical expansion of optical communication networks, it has led to the popularization of wide area networks such as internet and intranet, and at the same time, the communication traffic is also increased.

Generally, a fiber optic connector is formed by mating a female Adapter (Adapter) with a male connector, the female Adapter is disposed on an electronic device, and the male connector is inserted into the female Adapter to form a connection relationship, so as to achieve the purpose of fastening and data transmission.

Furthermore, with the development of technology, the optical fiber connector has developed SPF (Small Form-Factor) interface, sff (Small Form Factor) interface, QSFP +/QSFP DD/OSFP … with high-speed transmission performance and the like with hot-plugging function due to the industrial demand. However, these products are large in size and structure, high in space occupation ratio, and unable to effectively reduce the optical path pitch, and thus unable to meet the requirement of 5G communication for wiring density.

For example, FIG. 1 is an exploded view of a portion of the components of a prior art fiber optic connector, wherein relevant dimensions include: the outer diameter of the core tube is 1.25mm, and the outer diameter of the sleeve is 3mm, and the outer diameter of the core tube is 4.47mm =4.47 mm. In addition, fig. 2 is a partial schematic view of a fiber optic adapter for corresponding to the fiber optic connector shown in fig. 1, that is, two fiber optic connectors shown in fig. 1 can be adapted and accommodated in the adapter, wherein the relevant dimensions of the adapter include: the outer diameter E =1.62mm of the ferrule, the inner diameter F =1.25mm of the ferrule, and the ferrule gap G of the adapter (which corresponds to the optical path gap between any two adjacent optical fiber connectors after a plurality of optical fiber connectors are integrated into the adapter) =6.25 mm.

Meanwhile, for the user, after the optical fiber connector with high-density wiring and the corresponding adapter are produced, the problem of how to smoothly and conveniently mount and dismount (insert and pull) the optical fiber connector and the corresponding adapter is caused.

Based on the above, how to combine the optical fiber connector and the adapter with a simple structure to form a high-density integrated structure and have the convenience of user's assembly and disassembly is a subject that needs to be considered and overcome by the related technical personnel.

SUMMERY OF THE UTILITY MODEL

The utility model provides an optical fiber connector and optical fiber coupling assembling to a high density integrated optical fiber group is provided.

The utility model discloses an optical fiber connector, including casing, core pipe, thimble assembly and brace. The core tube is arranged in the shell and partially protrudes out of the shell. The sleeve pipe assembly is arranged on the shell and sleeved on the local part of the core pipe. The brace is arranged on the shell and has elasticity. When the force is not applied, the arc-shaped bulge is formed on the part of the pulling strip, and when the pulling strip is pulled, the arc-shaped bulge is leveled.

In an embodiment of the present invention, the top of the housing has an assembling hole, the brace has an assembling protrusion, and the assembling protrusion is assembled in the assembling hole and is in interference fit with the assembling hole, so that one end of the brace is fixed to the top of the housing.

In an embodiment of the present invention, the lateral portion of the housing has a limiting groove, and the brace further has a guiding hook slidably coupled to the limiting groove.

In an embodiment of the present invention, the extending direction of the limiting groove is consistent with the plugging direction of the optical fiber connector, and the drawing direction of the pulling strip is limited.

In an embodiment of the invention, the brace has a fixed end and a free end, the fixed end is fixed to the housing, the free end is adapted to be stressed to flatten the arc-shaped protrusion, and the guiding hook is located between the free end and the arc-shaped protrusion.

In an embodiment of the present invention, the sleeve assembly includes a first sleeve, a spring, a second sleeve, a third sleeve and a tail sleeve. The local grafting of core pipe is in first sleeve, and the spring housing is located first sleeve, and the second sleeve pipe is detained and is held in the casing, and the local grafting of second sleeve pipe is in the third sleeve pipe, and the third sleeve pipe is pegged graft in the tail cover.

In an embodiment of the present invention, the first sleeve has a stop protrusion, and the spring abuts against the stop protrusion.

In an embodiment of the present invention, the side portion of the housing has a fastening hole, and the second sleeve has a fastening protrusion, and the fastening protrusion is fastened in the fastening hole.

In an embodiment of the present invention, the length of the spring is 5.5mm to 6.0mm, and the wire diameter is 0.23mm, and is used for bearing a force of 5 newtons to 6 newtons.

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

The utility model discloses an optical fiber connection assembly, including adapter and a plurality of foretell fiber connector. The adapter comprises a body, a plurality of holding sleeves and a holding seat, wherein the body is provided with a front side and a rear side which are opposite to each other, and the holding seat is arranged on the front side of the body. The body is provided with a plurality of plug holes, and the holding sleeve is respectively arranged in the plug holes and the holding seat. The optical fiber connector is butted to the adapter from the rear side of the body so as to correspondingly hold the core tubes in the holding sleeves respectively.

In an embodiment of the present invention, the body has a plurality of locking holes, and the pulling strip of each optical fiber connector has a locking protrusion. When the optical fiber connector is butted to the adapter, the buckling convex part is correspondingly buckled in the buckling hole. When the pull strip is stressed to enable the arc-shaped protrusion to be leveled, the buckling convex part exits from the clamping hole.

In an embodiment of the present invention, the locking holes are respectively located at the top of the body and the bottom of the body. The optical fiber connectors butted to the adapter are in two rows and are parallel to each other, and the two rows are upside down.

In an embodiment of the present invention, the protective cover is assembled to the front side of the body or disassembled from the front side.

In an embodiment of the present invention, the optical fiber connector further includes at least one protection sleeve for assembling to at least one insertion hole of the body, which is not butted with the optical fiber connector, or disassembling from the insertion hole.

In an embodiment of the present invention, the pitch between two adjacent plugging holes is 2.3mm to 2.8 mm.

In an embodiment of the present invention, the inner diameter of the retaining sleeve is 0.58mm to 0.8 mm.

Based on the above, the utility model discloses a fiber connector when carrying out the size reduction, also further adjust its structure in order to do benefit to and form high density integrated structure with the adapter equipment together, fiber connector wherein borrows the brace that can be pulled by the roof setting at the casing, the brace has the buckle convex part that is used for the buckle in the adapter, and the brace still has elasticity and forms the arc arch when not atress, so that after user's application of force in the brace and flare-out the arc arch, the buckle convex part can be followed the card hole of adapter and withdrawed from, and reach the purpose with fiber connector release from the adapter. On the contrary, when the optical fiber connector is plugged into the adapter, the optical fiber connector can be fixed on the fixing sleeve of the adapter through the core tube of the optical fiber connector, and the buckling convex part is buckled and held on the buckling hole, so that the fixed connection between the optical fiber connector and the adapter is maintained. Accordingly, the optical fiber connecting component can be smoothly reduced in size without interfering with the assembling process with the adapter, and thus a high-density integrated structure can be formed. Correspondingly, the adapter for matching the optical fiber connector also performs corresponding size reduction, and has a combination structure capable of corresponding to the optical fiber connector, so that the optical fiber connection assembly with high density integration and reduced size can be assembled.

Drawings

Fig. 1 is an exploded view of a portion of the components of a prior art fiber optic connector.

FIG. 2 is a partial schematic view of a fiber optic adapter.

Fig. 3 is a schematic diagram of an optical fiber connection assembly according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of an adapter.

Fig. 5 is an exploded view of the adapter.

FIG. 6 is a schematic view of a fiber optic connector.

Fig. 7 is an exploded view of a fiber optic connector.

Fig. 8 is a cross-sectional view of the fiber optic connection assembly of fig. 3.

Description of the symbols

10 optical fiber connecting assembly

100 optical fiber connector

110 casing

111 sliding chute

112, a limit groove

113 fastening holes

114 assembly hole

120: brace

122 arc-shaped bulge

123: snap convex part

124, assembling convex part

126 guiding hook

130 protective cover

140 core tube

150 the first sleeve

151 stopping projection

160: spring

170 the second sleeve

171, a retaining projection

180: third sleeve

190 the tail sleeve

200 adaptor

210: body

211 clamping hole

212 inserting hole

220 protective sleeve

230 holding sleeve

240 holding seat

250 protective cover

A. B, size of the housing

C. D, E size of outside diameter

F is the inner diameter size

G is the distance between

E1 fixed end

E2 free end

d1 hole spacing

S1 front side

S2 rear side

TS, sleeve pipe assembly.

Detailed Description

Fig. 3 is a schematic diagram of an optical fiber connection assembly according to an embodiment of the present invention. Fig. 4 is a schematic diagram of an adapter. Fig. 5 is an exploded view of the adapter. Referring to fig. 3 to 5, in the present embodiment, the optical fiber connection assembly 10 includes an adapter 200 and a plurality of optical fiber connectors 100. The adapter 200 includes a body 210, a plurality of retaining sleeves 230, and a retainer 240, wherein the body 210 has a front side S1 and a rear side S2 opposite to each other, and the retainer 240 is disposed on the front side S1 of the body 210. The body 210 has a plurality of insertion holes 212, and the holding sleeve 230 is disposed in the insertion holes 212 and the holding seat 240 respectively and is movable along the assembly axis. The fiber optic connector 100 is mated and held to the adapter 200 from the rear side S2 of the body 210.

Referring to fig. 3 and 5 again, in the present embodiment, the adaptor 200 further includes a protection cover 250 and a plurality of protection sleeves 220, wherein the protection cover 250 is assembled to the front side S1 of the body 210 or disassembled from the front side S1; the protection sleeve 220 is used to be assembled to the rear side S2 of the body 210 without being butted with at least one plug hole 212 of the optical fiber connector 100, or to be disassembled from the plug hole 212. Here, the protective cap 250 and the protective sleeve 220 are assembled when the adapter 200 is not mated with the optical fiber connector 100 to provide the desired protection effect.

FIG. 6 is a schematic view of a fiber optic connector. Fig. 7 is an exploded view of a fiber optic connector. Referring to fig. 6 and 7, in the present embodiment, the optical fiber connector 100 includes a housing 110, a core tube 140, a ferrule assembly TS, and a pull strip 120. The core tube 140 is disposed in the housing 110 and partially protrudes from the housing 110. The sleeve set TS is disposed on the casing 110 and partially sleeved on the core tube 140. The bar 120 is disposed on the housing 110 and has elasticity. When not stressed, the arc-shaped bulge 122 is formed on part of the pull strip 120, and when the pull strip 120 is pulled, the arc-shaped bulge 122 is flattened.

Further, as shown in fig. 7, the top of the housing 110 has an assembling hole 114, and the bar 120 has a fixed end E1 and a free end E2 opposite to each other, and an assembling protrusion 124 at the fixed end E1, the assembling protrusion 124 is assembled to the assembling hole 114 in an interference fit, so that the fixed end E1 of the bar 120 is fixed to the top of the housing 110. Furthermore, the side of the housing 110 has a limiting groove 112, and the bar 120 further has a guiding hook 126, and the guiding hook 126 is slidably coupled to the limiting groove 112 to limit the moving path of the bar 120 when pulled by the user. That is, the extending direction of the limiting groove 112 of the present embodiment is the same as the inserting and pulling direction of the optical fiber connector 100, and the user also pulls the pulling strip 120 in the inserting and pulling direction (the pulling direction is the same as the inserting and pulling direction). In brief, for the pull-string 120 of the present embodiment, the fixed end E1 is fixed on the top of the housing 110, the free end E2 is adapted to be forced to flatten the arc-shaped protrusion 122, wherein the guiding hook 126 is located between the free end E1 and the arc-shaped protrusion 122.

As shown in fig. 7, the top of the housing 110 further has a sliding groove 111, a rear half section of the pull-strip 120 near the free end E2 slidably contacts the sliding groove 111, a front half section of the pull-strip 120 near the fixed end E1 is connected to the rear half section of the pull-strip 120 through an arc-shaped protrusion 122, and a step difference exists between the front half section and the rear half section to facilitate a user to pull the arc-shaped protrusion 122 flat to withdraw the snap protrusion 123 from the snap hole 211.

In addition, 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 sleeve 190, wherein a portion of the core tube 140 is inserted into the first sleeve 150, the spring 160 is sleeved on the first sleeve 150, the second sleeve 170 is retained in the housing 110, a portion of the second sleeve 170 is inserted into the third sleeve 180, and the third sleeve 180 is inserted into the tail sleeve 190. The optical fiber connector 100 of the present embodiment further includes a protective cover 130 assembled to the opening 115 of the housing 110 to cover and protect the core tube 140 protruding from the housing 110.

Fig. 8 is a cross-sectional view of the fiber optic connection assembly of fig. 3. Referring to fig. 7 and 8, the first sleeve 150 has a stop protrusion 151, such as an outer ring structure of an outer surface of the first sleeve 150, so that the spring 160 can abut against the stop protrusion 151 when the first sleeve 150 is sleeved thereon. The side of the housing 110 has a retaining hole 113, and the second sleeve 170 has a retaining protrusion 171, such as a non-closed outer ring structure on the outer surface of the second sleeve 170, which can make the retaining protrusion 171 be retained in the retaining hole 113 when the second sleeve 170 is assembled into the housing 110, so as to complete the fixing of the component. Here, the length of the spring 160 is 5.5mm to 6.0mm, the wire diameter is 0.23mm, and the spring is used to bear a force of 5 newton to 6 newton, so that the optical fiber connector 100 can maintain the required assembling capability in response to the size reduction. At the same time, the stop protrusion 151 of the first sleeve 150 abuts against the inner stop structure of the housing 110 (as shown in fig. 8, where the left side of the stop protrusion 151 abuts) to limit the position of the core tube 140 relative to the housing 110.

Referring to fig. 3 and 8, in the present embodiment, the body 210 of the adapter 200 has a plurality of fastening holes 211, and the pull-out strip 120 of each optical fiber connector 100 has a fastening protrusion 123 between the arc-shaped protrusion 122 and the fixed end E1. When the optical fiber connector 100 is mated to the adapter 200, the core tubes 140 are correspondingly held in the holding sleeves 230, respectively, and the snap protrusions 123 are correspondingly snapped in the snap holes 211. When the pull-tab 120 is forced (in fig. 8, the user applies a force to pull the pull-tab 120 to the right) to pull the arc-shaped protrusion 122 flat, the snap-fit protrusion 123 can smoothly exit the snap hole 211 due to the height difference, so as to remove the optical cable connector 100 from the adapter 200.

Referring to fig. 1, 4 and 8, the adapter 200 of the present embodiment is used to plug a plurality of optical fiber connectors 100 to form a high-density integrated structure, wherein the plurality of card holes 211 of the body 210 are respectively located at the top and the bottom of the body 210, so that the optical fiber connectors 100 butted to the adapter 200 are in two rows and parallel to each other, and the two rows are upside down to form a 2 × 6 array. Here, the pitch d1 of the two adjacent plug holes 212, which is also equivalent to the optical path of the two adjacent optical fiber connectors 100, is 2.3mm to 2.8mm, and in order to allow the core tube 140 of the optical fiber connector 100 to be smoothly assembled to the holding sleeve 230, the inner diameter of the holding sleeve 230 is 0.58mm to 0.8mm to match the outer diameter of the core tube 140 to be 0.6mm to 0.8 mm.

In summary, in the above embodiments of the present invention, the optical fiber connector is further adjusted to be assembled with the adapter to form a high-density integrated structure while the optical fiber connector is reduced in size, wherein the optical fiber connector is provided with a pull strip that can be pulled on a top plate of the housing, the pull strip has a buckle protrusion for buckling on the adapter, and the pull strip further has elasticity and forms an arc protrusion when not stressed, so that the buckle protrusion can be withdrawn from the buckle hole of the adapter after the user applies force on the pull strip to pull the arc protrusion flat, thereby releasing the optical fiber connector from the adapter. On the contrary, when the optical fiber connector is plugged into the adapter, the optical fiber connector can be fixed on the fixing sleeve of the adapter through the core tube of the optical fiber connector, and the buckling convex part is buckled and held on the buckling hole, so that the fixed connection between the optical fiber connector and the adapter is maintained. Accordingly, the optical fiber connecting component can be smoothly reduced in size without interfering with the assembling process with the adapter, and thus a high-density integrated structure can be formed. Correspondingly, the adapter for matching the optical fiber connector also performs corresponding size reduction, and has a combination structure capable of corresponding to the optical fiber connector, so that the optical fiber connection assembly with high density integration and reduced size can be assembled.

Claims (17)

1. An optical fiber connector, characterized by:

a housing;

the core pipe is arranged in the shell, and part of the core pipe protrudes out of the shell;

the sleeve component is arranged on the shell and sleeved on the local part of the core pipe; and

the pull strip is arranged on the shell, has elasticity, and when the pull strip is not stressed, an arc-shaped bulge is formed on part of the pull strip, and the pull strip is suitable for being stressed to be pulled so that the arc-shaped bulge is leveled.

2. The fiber optic connector of claim 1, wherein: the top of the shell is provided with an assembling hole, the brace is provided with an assembling convex part, and the assembling convex part is assembled in the assembling hole and is in interference fit, so that one end of the brace is fixed on the top of the shell.

3. The fiber optic connector of claim 1, wherein: the lateral part of the shell is provided with a limiting groove, the brace is also provided with a guide clamping hook, and the guide clamping hook is coupled with the limiting groove in a sliding way.

4. The fiber optic connector of claim 3, wherein: the extending direction of the limiting groove is consistent with the plugging and unplugging direction of the optical fiber connector, and the drawing direction of the pull strip is limited.

5. The fiber optic connector of claim 3, wherein: the brace is provided with a fixed end and a free end, the fixed end is fixed on the shell, the free end is suitable for being stressed to flatten the arc-shaped bulge, and the guide clamping hook is positioned between the free end and the arc-shaped bulge.

6. The fiber optic connector of claim 1, wherein: the cannula assembly includes:

the part of the core tube is inserted in the first sleeve;

the spring is sleeved on the first sleeve;

a second sleeve retained within said housing;

the part of the second sleeve is inserted in the third sleeve; and

and the third sleeve is inserted in the tail sleeve.

7. The fiber optic connector of claim 6, wherein: the first sleeve is provided with a stop convex part, and the spring abuts against the stop convex part.

8. The fiber optic connector of claim 6, wherein: the side of the shell is provided with a buckling hole, and the second sleeve is provided with a buckling convex part which is buckled in the buckling hole.

9. The fiber optic connector of claim 6, wherein: the spring has a length of 5.5mm to 6.0mm and a wire diameter of 0.23mm, and is configured to withstand a force of 5 newtons to 6 newtons.

10. The fiber optic connector of claim 1, wherein: the outer diameter of the core tube is 0.6mm to 0.8 mm.

11. An optical fiber connection assembly, characterized by:

a plurality of fiber optic connectors as claimed in any one of claims 1 to 10; and

an adapter, comprising a body, a plurality of retaining sleeves and a retaining base, wherein the body has a front side and a rear side opposite to each other, the retaining base is disposed on the front side of the body, the body has a plurality of insertion holes, each retaining sleeve is disposed in each insertion hole and the retaining base, respectively, each optical fiber connector is butted to the adapter from the rear side of the body, so that each core tube is retained in each retaining sleeve, respectively, correspondingly.

12. The fiber optic connection assembly of claim 11, wherein: the body is provided with a plurality of clamping holes, the pull strip of each optical fiber connector is provided with a buckling convex part, after each optical fiber connector is butted to the adapter, each buckling convex part is correspondingly buckled in each clamping hole, and when the pull strip is stressed to enable the arc-shaped bulge to be leveled, the buckling convex parts exit from the clamping holes.

13. The fiber optic connection assembly of claim 12, wherein: each clamping hole is respectively positioned at the top of the body and the bottom of the body, and the optical fiber connectors butted to the adapter are in two rows and are parallel to each other, and the two rows are inverted from top to bottom.

14. The fiber optic connection assembly of claim 11, wherein: also include a protective cover, assemble to the front side of the body or from the front side dismantles.

15. The fiber optic connection assembly of claim 11, wherein: the optical fiber connector further comprises at least one protective sleeve, so that the protective sleeve can be assembled to the rear side of the body without being butted with at least one plug hole of the optical fiber connector or disassembled from the plug hole.

16. The fiber optic connection assembly of claim 11, wherein: the pitch between two adjacent plug holes is 2.3mm to 2.8 mm.

17. The fiber optic connection assembly of claim 11, wherein: the inner diameter of the holding sleeve is 0.58mm to 0.8 mm.

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