Optical fiber connection port assembly, optical fiber communication equipment and optical fiber communication system

Abstract

The present application relates to an optical fiber connection port assembly wherein the optical fiber connection port assembly comprises a connection port housing and a locking member which together define at least a portion of a receiving portion for receiving an optical fiber connector, the connection port housing comprises a first locking part used for a first clamping and locking protruding part of the optical fiber connector, and the locking piece comprises a second locking part used for a second clamping and locking protruding part of the optical fiber connector and an unlocking acting part used for the first clamping and locking protruding part of the optical fiber connector. The locking part can be switched between a locking state and an unlocking state, compared with the locking state, in the unlocking state, the second locking part of the locking part is far away from the receiving part, and the unlocking action part of the locking part is close to the receiving part. The invention further relates to optical fiber communication equipment and an optical fiber communication system.

Description

Technical Field

[0001] The present application relates to an optical fiber connection port assembly, an optical fiber communication device and an optical fiber communication system. Background Art

[0002] Optical fiber communication systems are becoming more and more popular. Optical fiber communication systems can efficiently transmit large amounts of data over long distances using optical fiber cable networks. There are currently a variety of optical fiber communication devices, such as optical fiber splice boxes, optical fiber routers, optical fiber switches, optical fiber transceivers, optical fiber modems, etc. In practice, it is often necessary to connect optical fiber cables to optical fiber communication devices or to unplug optical fiber cables from optical fiber communication devices. It is important to allow the connection between optical fiber cables and optical fiber communication devices to be established or disconnected flexibly, conveniently, stably and reliably. Summary of the invention

[0003] The task of the present application is to provide a fiber optic connection port assembly, a fiber optic communication device and a fiber optic communication system, by means of which at least part of the defects in the prior art can be overcome.

[0004] A first aspect of the present application relates to an optical fiber connection port assembly, wherein the optical fiber connection port assembly includes a connection port housing and a locking member, the connection port housing and the locking member jointly define at least a portion of a receiving portion for receiving an optical fiber connector, the connection port housing includes a first locking portion for a first locking protrusion of the optical fiber connector, and the locking member includes a second locking portion for a second locking protrusion of the optical fiber connector and an unlocking action portion including a first locking protrusion of the optical fiber connector, the locking member can be transformed between a locked state and an unlocked state, compared to the locked state, in the unlocked state, the second locking portion of the locking member is away from the receiving portion, and the unlocking action portion of the locking member is close to the receiving portion.

[0005] According to one embodiment of the present application, the optical fiber connection port assembly is configured to allow the optical fiber connector to be inserted into the receiving portion of the optical fiber connection port assembly along an insertion direction.

[0006] According to one embodiment of the present application, in a locked state, the fiber optic connection port assembly prevents the fiber optic connector located in the receiving portion from moving against the insertion direction; and in an unlocked state, the fiber optic connection port assembly allows the fiber optic connector located in the receiving portion to move against the insertion direction.

[0007] According to one embodiment of the present application, the first locking portion is constructed to interact with a first locking protrusion of the optical fiber connector located in the receiving portion in a locked state, and the second locking portion is constructed to interact with a second locking protrusion of the optical fiber connector located in the receiving portion in a locked state.

[0008] According to an embodiment of the present application, the unlocking action portion of the locking member is configured to act on a first locking protrusion of the optical fiber connector located in the receiving portion in the unlocked state so that the first locking protrusion is disengaged from the first locking portion.

[0009] According to an embodiment of the present application, the second locking portion of the locking member is configured to separate from a second locking protrusion of the optical fiber connector located in the receiving portion in the unlocked state, so that the second locking protrusion is disengaged from the second locking portion.

[0010] According to an embodiment of the present application, the locking element includes an outwardly protruding operating portion in the region of the unlocking action portion, and the locking element can be caused to change from the locked state to the unlocked state by pressing the operating portion.

[0011] According to an embodiment of the present application, the second locking portion and the unlocking action portion are opposite to each other in the unlocking movement direction of the locking member, and the locking member can be transformed from a locked state to an unlocked state along the unlocking movement direction.

[0012] According to one embodiment of the present application, the locking member includes a surrounding portion that at least partially defines a receiving portion, the surrounding portion includes a first semi-cylindrical shell-shaped section having a second locking portion and a second section having an unlocking action portion, and the first section and the second section together form the surrounding portion.

[0013] According to an embodiment of the present application, a distance between the second locking portion and the central axis of the receiving portion is smaller than a distance between the unlocking effect portion and the central axis of the receiving portion.

[0014] According to an embodiment of the present application, a distance between the second locking portion and the center axis of the receiving portion corresponds to a distance between the first locking portion and the center axis of the receiving portion.

[0015] According to an embodiment of the present application, the locking element is at least partially elastic, can be elastically deformed from a locked state to an unlocked state, and can be transformed from the unlocked state to the locked state under the action of a restoring elastic force.

[0016] According to an embodiment of the present application, the locking element includes an elastic arm extending in the axial direction, and the elastic arm is connected to the surrounding portion.

[0017] According to an embodiment of the present application, the elastic arm is connected to the second section of the surrounding portion.

[0018] According to one embodiment of the present application, the connection port housing includes a support portion for the elastic arm.

[0019] According to one embodiment of the present application, the locking member includes a positioning recessed portion, and the connection port housing includes a positioning protrusion corresponding to the positioning recessed portion.

[0020] According to an embodiment of the present application, the locking member includes a guide pin, and the connection port housing includes a guide hole corresponding to the guide pin.

[0021] According to one embodiment of the present application, the connection port housing includes a clearance opening for at least a portion of the first section of the locking element.

[0022] According to an embodiment of the present application, the locking element has an outwardly protruding elastic bulge in the region of the second locking portion, and the elastic bulge is supported on an inner wall of the connecting port housing.

[0023] According to one embodiment of the present application, the optical fiber connection port assembly includes a spring disposed between the connection port housing and the locking member, and the spring holds the locking member in a locked state.

[0024] According to one embodiment of the present application, the fiber optic connection port assembly includes a fiber optic adapter at least partially located in a connection port housing.

[0025] According to an embodiment of the present application, viewed in the axial direction, the first locking portion, the second locking portion and the unlocking portion are located between the optical fiber adapter and the entrance of the optical fiber connection port assembly.

[0026] According to one embodiment of the present application, the fiber optic adapter, the connection port housing and the locking member jointly define a receiving portion for receiving the fiber optic connector, and the fiber optic adapter includes a segment for defining the relative orientation of the fiber optic connector in the circumferential direction relative to the fiber optic connection port assembly, and the shape of the segment matches the shape of the corresponding segment of the fiber optic connector.

[0027] A second aspect of the present application relates to a fiber optic communication device, which includes at least one fiber optic connection port assembly according to the first aspect of the present application.

[0028] According to an embodiment of the present application, the operating portion of the optical fiber connection port assembly is exposed from the housing of the optical fiber communication device, so that the operating portion can be operated from the outside of the optical fiber communication device.

[0029] According to an embodiment of the present application, the optical fiber communication device is a splice closure, and the splice closure includes a splice closure housing and a plurality of optical fiber connection port assemblies arranged in the splice closure housing.

[0030] According to one embodiment of the present application, the junction box housing includes a housing cover and a housing body, the housing body includes a first partition wall, the first partition wall divides the internal space of the junction box housing into a first space and a second space, the connection port housing and locking member of the optical fiber connection port assembly are arranged in the first space, and the optical fiber connection plate is arranged in the second space.

[0031] According to an embodiment of the present application, the first partition wall includes a communication hole connecting the first space and the second space, and the optical fiber adapter of the optical fiber connection port assembly passes through the communication hole.

[0032] According to one embodiment of the present application, a sealing ring is provided between the optical fiber adapter and the connecting hole.

[0033] According to an embodiment of the present application, the housing body includes a housing support and a panel, and the panel defines a connection entrance for the optical fiber connector.

[0034] According to an embodiment of the present application, the housing cover includes a first retaining hook extending into the first space, and the panel includes a second retaining hook for cooperating with the first retaining hook.

[0035] According to an embodiment of the present application, the axial position of the connection port housing in the optical fiber communication device is defined by the first retaining hook and the first partition wall.

[0036] According to one embodiment of the present application, the housing cover and the housing body are fixed relative to each other by means of high-frequency induction welding.

[0037] According to one embodiment of the present application, the splice box has at least two rows of optical fiber connection port assemblies stacked one above the other.

[0038] According to an embodiment of the present application, the splice closure housing includes a second partition wall, and the second partition wall is configured to separate two adjacent rows of optical fiber connection port assemblies from each other.

[0039] According to an embodiment of the present application, the joint box includes a first housing cover and a second housing cover as housing covers.

[0040] According to an embodiment of the present application, the optical fiber communication device includes a plug for an optical fiber connection port assembly, and the plug includes a first locking protrusion and a second locking protrusion.

[0041] A third aspect of the present application relates to a fiber optic communication system, which includes a fiber optic communication device and a fiber optic cable assembly according to any one of claims 24 to 37, wherein the fiber optic cable assembly includes a fiber optic cable and a fiber optic connector, and the fiber optic connector includes a first locking protrusion and a second locking protrusion.

[0042] According to an embodiment of the present application, the first locking protrusion and the second locking protrusion of the optical fiber connector are radially opposite to each other.

[0043] According to one embodiment of the present application, the optical fiber connector includes two elastic snap-in structures, which can move from an initial state to a deformed state biased inward relative to the initial state, and can move from the deformed state toward the initial state under the action of a reset elastic force, wherein one snap-in structure has a first locking protrusion protruding outward, and the other snap-in structure has a second locking protrusion protruding outward.

[0044] According to an embodiment of the present application, the two snap-fit ​​structures are rotationally symmetric to each other about a central axis of the optical fiber connector.

[0045] According to an embodiment of the present application, the snap-fit ​​structure includes a first section extending in the axial direction and a second section extending in the circumferential direction from the first section, and the locking projection is configured in a region of the second section remote from the first section.

[0046] According to one embodiment of the present application, the first section and the second section are plate-shaped.

[0047] According to an embodiment of the present application, the locking protrusion includes a first guide slope surface rising along a first direction, and the first direction points from the head of the optical fiber connector to the tail of the optical fiber connector.

[0048] According to an embodiment of the present application, viewed along the first direction, the locking protrusion sequentially includes a top portion connected to the first guide slope and a step portion, wherein the step portion forms a locking action surface.

[0049] According to an embodiment of the present application, the locking protrusion includes an unlocking slope that descends along the circumferential direction.

[0050] According to an embodiment of the present application, the connector housing includes a connector body having an internal channel and a retaining ring having the snap-fit ​​structure, the retaining ring is sleeved on the connector body, and the internal channel is configured for allowing the optical fiber to extend through the optical fiber connector.

[0051] According to an embodiment of the present application, the retaining ring includes an annular base, and the snap-fit ​​structure is connected to the base.

[0052] According to one embodiment of the present application, the connector body includes a positioning rib extending in an axial direction on the outer wall, and the retaining ring includes a positioning groove corresponding to the positioning rib on the inner wall, and the positioning rib and the positioning groove cooperate to limit the relative position of the retaining ring and the connector body in the circumferential direction.

[0053] According to one embodiment of the present application, the connector body includes a recess extending in a circumferential direction on the outer wall, and when the retaining ring is mounted on the connector body, the second section of the snap-fit ​​structure is located in the area of ​​the recess, and the recess forms a movable space for the second section of the snap-fit ​​structure.

[0054] According to one embodiment of the present application, the snap-fit ​​structure includes a retaining protrusion located on the inner wall of the second section. When the retaining ring is mounted on the connector body, the retaining protrusion cooperates with the recess to limit the relative position of the retaining ring and the connector body in the axial direction.

[0055] According to an embodiment of the present application, the retaining protrusion transitions to the inner wall of the second section along a second direction by means of a second guide slope, and the second direction points from the tail of the optical fiber connector to the head of the optical fiber connector.

[0056] According to an embodiment of the present application, the retaining protrusion is located at a position corresponding to the locking protrusion.

[0057] According to one embodiment of the present application, the optical fiber connector includes at least one annular groove between the snap structure and the head of the optical fiber connector, and a sealing ring is arranged in the annular groove.

[0058] According to an embodiment of the present application, the optical fiber connector includes a ferrule assembly, which includes a ferrule, a spring and a ferrule housing. The ferrule is pressed against the ferrule housing via the spring and extends from the front end of the ferrule housing.

[0059] According to an embodiment of the present application, the ferrule housing includes a connection groove configured in its tail region, and the connector housing includes a connection key configured in its head region, and the ferrule housing is mounted on the connector housing in a manner that the connection key engages in the connection groove.

[0060] According to an embodiment of the present application, the connecting key and the connecting groove extend in an axial direction.

[0061] According to an embodiment of the present application, the insert housing has a chamfer extending from its front end to its rear end.

[0062] According to one embodiment of the application, the insert insert housing has a rectangular outer cross section at least in its front region, and the chamfer is formed on at least one edge of the insert insert housing.

[0063] According to one embodiment of the present application, the chamfer extends over a partial length of the insert housing.

[0064] According to an embodiment of the present application, when the ferrule housing is mounted on the connector housing, an outer surface of the ferrule housing and an outer surface of the connector housing smoothly merge with each other at least in a partial region.

[0065] According to an embodiment of the present application, when the ferrule housing is installed on the connector housing, the outer surface of the ferrule housing and the outer surface of the connector housing are smoothly connected to each other except for the areas of the connection key and the connection groove.

[0066] According to an embodiment of the present application, the optical fiber connector includes an optical cable fixture, and / or the optical fiber cable assembly includes a tail sleeve.

[0067] Other features and advantages of the subject technology of the present application will be described in the following description, and in part will be apparent from the description, or can be learned by practicing the subject technology of the present application. The advantages of the subject technology of the present application will be realized and obtained through the structures specifically pointed out in the specification and the drawings.

[0068] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the subject technology of the present application as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present application will be better understood, in which:

[0070] Figures 1 to 3 Schematically illustrates an optical fiber connection port assembly according to an embodiment of the present application;

[0071] Figure 4 Schematically shows an exploded view of an optical fiber connection port assembly according to an embodiment of the present application;

[0072] Figure 5 Schematically showing the Figure 5 A cross-sectional view of an optical fiber connection port assembly;

[0073] Figure 6 Schematically showing the Figure 5 A fiber optic connection port assembly together with a fiber optic cable assembly inserted into the fiber optic connection port assembly;

[0074] Figure 7 Schematically showing the Figure 5 A cross-sectional view of a fiber optic connection port assembly together with a fiber optic cable assembly inserted into the fiber optic connection port assembly;

[0075] Figure 8 Schematically shows Figure 7 A magnified part of

[0076] Figures 9 to 11 Schematically showing the Figure 1 A locking member of an optical fiber connection port assembly;

[0077] Figure 12 to Figure 14 Schematically showing the Figure 1 A connection port housing of the optical fiber connection port assembly;

[0078] Fig.15 Schematically showing a locking member of an optical fiber connection port assembly according to another embodiment of the present application;

[0079] Fig.16 Schematically illustrating an optical fiber communication device according to an embodiment of the present application;

[0080] Fig.17 Schematically showing the Fig.16 Housing support and optical fiber connection port assembly of optical fiber communication equipment;

[0081] Fig.18 Schematically showing the Fig.16 A housing cover for an optical fiber communication device;

[0082] Fig.19 Schematically showing the Fig.16 Panels for fiber optic communication equipment;

[0083] Fig. 20 Schematically showing the Fig.16 Housing of optical fiber communication equipment;

[0084] Fig.21 Schematically showing the Fig.16 Optical fiber communication equipment and plugs thereof;

[0085] Fig. 22 Schematically illustrating an optical fiber cable assembly of an optical fiber communication system according to an embodiment of the present application;

[0086] Fig.23 Schematically shows Fig. 22 An exploded view of a fiber optic cable assembly;

[0087] Fig.24 Schematically shows Fig. 22 A perspective view of an optical fiber cable assembly;

[0088] Fig.25 Schematically showing the Fig. 22 Different optical cable fixtures for optical fiber cable assemblies;

[0089] Fig.26 Schematically shows Fig. 22 an exploded view of a connector housing of a fiber optic connector of a fiber optic cable assembly;

[0090] Fig. 27 Schematically shows Fig.26 A cross-sectional view of a connector housing;

[0091] Fig.28 Schematically shows Fig.26 A perspective view of a connector housing;

[0092] Figure 29 to Figure 31 Schematically shown from different perspectives Fig.26 A retaining ring of a connector housing;

[0093] Fig.32 Schematically shows Fig. 22 A ferrule housing of an optical fiber cable assembly;

[0094] Fig.33 Schematically shows Figure 4 A fiber optic adapter for a fiber optic connection port assembly. DETAILED DESCRIPTION

[0095] The present application will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully illustrate the scope of protection of the present application. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0096] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0097] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present application. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0098] The singular forms "a", "the" and "the" used in the specification include the plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in the specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from approximately X to Y" used in this specification means "from approximately X to approximately Y".

[0099] In the specification, when an element is said to be "on", "attached", "connected", "coupled", or "contacting" another element, the element may be directly on, attached, connected, coupled, or contacting another element, or there may be an intermediate element. In contrast, when an element is said to be "directly" "on", "directly attached", "directly connected", "directly coupled", or "directly contacting" another element, there will be no intermediate element. In the specification, a feature is arranged "adjacent" to another feature, which may refer to a feature having a portion that overlaps with an adjacent feature or a portion that is located above or below an adjacent feature.

[0100] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned upside down, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0101] Next, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0102] Figures 1 to 3 The optical fiber connection port assembly 300 according to one embodiment of the present application is schematically shown. The optical fiber connection port assembly 300 can, for example, form an optical fiber communication device, such as an optical fiber splice box 500 (see Fig.16), optical routers, optical switches, optical transceivers, optical modems, and the like. An optical fiber cable assembly having an optical fiber connector can be connected to an optical fiber communication device via an optical fiber connection port, in particular, an optical fiber connection port assembly 300. The optical fiber connection port assembly 300 may include a connection port housing 310 and a locking member 320. The connection port housing 310 and the locking member 320 may jointly define at least a portion of a receiving portion 330 for receiving an optical fiber connector. The receiving portion 330 may have an entrance 370 open to the outside, and the optical fiber connector may be inserted into the receiving portion 330 of the optical fiber connection port assembly 300 along an insertion direction R via the entrance 370. The locking member 320 may be disposed in the connection port housing 310 and may be transformed between a locked state and an unlocked state relative to the connection port housing 310. In the locked state, the optical fiber connection port assembly 300 may prevent the optical fiber connector located in the receiving portion 330 from moving against the insertion direction R, thereby keeping the optical fiber connector in the optical fiber connection port assembly 300. In the unlocked state, the fiber optic connection port assembly 300 allows the fiber optic connector located in the receiving portion 330 to move against the insertion direction R, so that the fiber optic connector can be pulled out of the fiber optic connection port assembly 300 .

[0103] like Figure 2 , Figure 5 and Figure 8 (which exemplarily shows the optical fiber connector 3 inserted and held in the optical fiber connection port assembly 300) As can be seen most clearly, the connection port housing 310 may include a first locking portion 311 for the first locking protrusion 31 of the optical fiber connector 3, and further, the locking member 320 may include a second locking portion 321 for the second locking protrusion 32 of the optical fiber connector 3. Figure 8 In the case shown in , the locking member 320 is in a locked state relative to the connection port housing 310, wherein the optical fiber connector 3 can be retained in the optical fiber connection port assembly 300 by the interaction between the first locking protrusion 31 and the first locking portion 311 and by the interaction between the second locking protrusion 32 and the second locking portion 321. Specifically, the portions of the first locking portion 311 and the second locking portion 321 that play a major locking role can be their respective locking surfaces 700 facing the rear of the connection port assembly 300. The locking surfaces 700 can form a stop for the first locking protrusion 31 or the second locking protrusion 32, respectively, thereby preventing the optical fiber connector 3 from moving against the insertion direction R. The "rear" can be understood in particular as a portion opposite to the entrance 370 when viewed along the insertion direction R, and the portion is away from the entrance 370.

[0104] In addition, if Figure 2 , Figure 5 and Figure 8As shown, the locking member 320 further includes an unlocking function portion 322 for the first locking protrusion 31 of the optical fiber connector 3. The unlocked state of the locking member 320 may be a state in which, compared with the locked state, the second locking portion 321 of the locking member 320 is further away from the receiving portion 330 or the optical fiber connector 3 located in the receiving portion 330, while the unlocking function portion 322 of the locking member 320 is closer to the receiving portion 330 or the optical fiber connector 3 located in the receiving portion 330. Specifically, in the embodiment shown, the transition of the locking member 320 from the locked state to the unlocked state may be understood as the transition of the locking member 320 from the locked state to the unlocked state. Figure 5 and Figure 8 From the state shown, the locking member 320 at least partially moves downward or deforms relative to the connection port housing 310 (see arrow F), so that the unlocking action portion 322 of the locking member 320 can exert an action (downward in this case) on the first locking protrusion 31 of the optical fiber connector 3 located in the receiving portion 330. Since the first locking portion 311 is configured on the connection port housing 310, the first locking portion 311 can remain substantially unchanged in this process, so that the first locking protrusion 31 that is exerted with a downward force and deformed downward, for example, can be disengaged from the first locking portion 311. At the same time, the second locking portion 321 of the locking member 320 can also move downward and leave the second locking protrusion 32 of the optical fiber connector 3 located in the receiving portion 330, so that the second locking protrusion 32 can be disengaged from the second locking portion 321. Thus, in the unlocked state, the optical fiber connector 3 is allowed to be pulled out of the optical fiber connection port assembly 300.

[0105] like Figures 9 to 11 As shown, the locking member 320 may include a surrounding portion 323 that at least partially defines the receiving portion 330. The surrounding portion 323 can be understood as a surrounding center axis M (see FIG. Figure 2 ) section, which section can be closed along the circumference or form a closed loop. The central axis M can extend substantially along the insertion direction R. In other words, the central axis can be understood as the extension axis of the optical fiber of the optical fiber cable assembly in the optical fiber connection port assembly 300 when the optical fiber cable assembly with the optical fiber connector 3 is inserted and retained in the optical fiber connection port assembly 300.

[0106] The second locking portion 321 can be configured, for example, in the first section 324 of the surrounding portion 323. The first section 324 is, for example, in the shape of a semi-cylindrical shell. In other embodiments, the first section 324 can also have other suitable shapes, such as a semi-square frame shape. The second locking portion 321 can exist as a recess in the first section 324, and the recess can be open toward the tail of the locking member 320. The surface of the recess facing the tail of the locking member 320 can be the locking surface 700 of the second locking portion 321. In other embodiments, the second locking portion 321 can also exist as a "hole" in the first section 324, so that the first section 324 is not simply connected.

[0107] The unlocking action portion 322 may be configured in the second section 325 of the surrounding portion 323. The first section 324 and the second section 325 may together enclose the surrounding portion 323, wherein the first section 324 may exist as a lower half section and the second section 325 may exist as an upper half section.

[0108] Advantageously, if Figure 5 and Figures 8 to 11 As shown, the second locking portion 321 and the unlocking action portion 322 of the locking member 320 can be advantageously disposed opposite to each other along the unlocking movement direction F of the locking member 320. Thus, when the locking member 320 moves or deforms, for example, at least partially, along the unlocking movement direction F, the second locking portion 321 moves away from the receiving portion 330 and the unlocking action portion 322 moves closer to the receiving portion 330 (or moves into the receiving portion 330) can occur substantially simultaneously, thereby facilitating unlocking.

[0109] In some embodiments, it is also conceivable that only the unlocking action portion 322 is located in the unlocking movement direction F of the locking member 320, while the second locking portion 321 can be located outside the unlocking movement direction F of the locking member 320. Specifically, the second locking portion 321 can be spaced apart from the unlocking action portion 322 by an angular distance of, for example, 90° to 180°, for example, 90° to 120°. Thus, the second locking portion 321 can be configured, for example, on one or both side walls 326 of the surrounding portion 323 of the locking member 320. When the locking member 320 is transformed into the unlocked state, the second locking portion 321 configured on the side wall 326 can move away from the receiving portion 330, slide sideways relative to the corresponding second latching protrusion of the optical fiber connector, and disengage from the latching.

[0110] In order to realize the transition of the locking member 320 from the locked state to the unlocked state, as shown in FIG. Figures 9 to 11 As shown, the locking member 320 can include an outwardly extending operating portion 327 (away from the receiving portion 330) in the area of ​​the unlocking effect portion 322. The operating portion 327 can be configured in the form of a button, which can be opened along the Fig.10The locking member 320 is changed from the locked state to the unlocked state by pressing the operating portion 327 in the unlocking movement direction F. The operating portion 327, the unlocking action portion 322 and the second locking portion 321 of the locking member 320 can be basically located on a straight line. The straight line can be parallel to the unlocking movement direction F and can intersect with the central axis M. This is advantageous for force transmission and motion transmission. In particular, the operating portion 327, the unlocking action portion 322 and the second locking portion 321 of the locking member 320 can be arranged in sequence when viewed along the unlocking movement direction F.

[0111] In some embodiments, the locking member 320 may be at least partially elastic, and the locking member 320 may be elastically deformed from the locked state (for example, when the operating portion 327 is pressed) to the unlocked state, and may be transformed from the unlocked state to the locked state under the action of the resetting elastic force. Here, the locked state may be a state that the locking member 320 naturally has when it is arranged in the connection port housing 310. Specifically, as Figure 1 , Figure 5 as well as Figures 9 to 11 As shown, the locking member 320 may include an elastic arm 328 extending in the axial direction, and in this case, two elastic arms 328. The elastic arm 328 may be connected to the surrounding portion 323, and in particular, connected to the second section 325 of the surrounding portion 323 in the upper region of the surrounding portion 323. Fig.12 As shown, the connection port housing 310 may include a support portion 312 for the elastic arm 328. In the case where the locking member 320 is disposed in the connection port housing 310, the elastic arms 328 of the locking member 320 may be supported on the support portion 312, respectively. When the manipulation portion 327 is pressed, the elastic arm 328 may be bent and deformed downward substantially with the support portion 312 as a fulcrum, so that the locking member 320 is transformed from a locked state to an unlocked state.

[0112] like Figures 9 to 12 As shown, the connection port housing 310 may further include a positioning protrusion 313, which may cooperate with the positioning recess 329 of the locking member 320. The locking member 320 may further include a tail section 340 at an end opposite to the surrounding portion 323. When the locking member 320 is disposed in the connection port housing 310, the tail section 340 may be close to the inner end wall 314 of the connection port housing 310. In the process of the elastic arm 328 of the locking member 320 bending downward, the interaction between the positioning protrusion 313 and the positioning recess 329 and / or the interaction between the tail section 340 and the inner end wall 314 may ensure that the locking member 320 is always kept in the connection port housing 310 without slipping.

[0113] like Figures 9 to 11As shown, the locking member 320 may include a guide pin 341. The guide pin 341 may be configured in the region of the first section 324 of the locking member 320, for example, on the outer wall of the first section 324 and extend away from the receiving portion 330. Fig.13 As shown, the connection port housing 310 may include a guide hole 315 equipped with a guide pin 341. The movement direction of the locking member 320 relative to the connection port housing 310, in particular, the unlocking movement direction F of the surrounding portion 323 can be guided by the guide pin 341 and the guide hole 315. Although there are two pairs of guide pins 341 and guide holes 315 in the embodiment shown in the figure, other numbers of guide pins 341 and guide holes 315, such as only one guide pin 341 and only one guide hole 315, are naturally feasible.

[0114] like Figure 3 and Fig.13 As shown, the connection port housing 310 may include a clearance opening 316 for at least a portion of the first section 324 of the locking member 320, particularly the area of ​​the second locking portion 321. During the transition of the locking member 320 to the unlocked state, the clearance opening 316 can allow the corresponding portion of the locking member 320 to continue to move downward without interfering with the connection port housing 310.

[0115] like Figure 2 As can be seen most clearly, the distance between the second locking portion 321 and the central axis M of the receiving portion 330 can correspond to the distance between the first locking portion 311 and the central axis M of the receiving portion 330. The central axis M of the receiving portion 330 can also be understood here as the longitudinal extension axis of the optical fiber of the optical fiber cable assembly in the receiving portion 330 when the optical fiber cable assembly with the optical fiber connector 3 is inserted and retained in the receiving portion 330. As a result, the inner wall of the first locking portion 311 and the first section 324, especially the inner wall of the second locking portion 321, have substantially the same distance from the central axis M of the receiving portion 330, which is conducive to supporting and retaining the optical fiber connector in a balanced manner on both sides. Such an arrangement structure is particularly advantageous for the optical fiber connector 3 having the first locking protrusion 31 and the second locking protrusion 32 that are symmetrical to each other. Exemplary embodiments of such an optical fiber connector 3 will be described below in conjunction with Figures 22 to 31 Elaborate in more detail.

[0116] In addition, if Figure 2It can be seen most clearly that, when the locking member 320 is disposed in the connection port housing 310 and the manipulation portion 327 is not manipulated, or in other words, in the locked state of the locking member 320, the inner diameter of the first section 324 of the locking member 320 can be advantageously smaller than the distance between the unlocking action portion 322 and the central axis M of the receiving portion 330. In other words, the distance between the unlocking action portion 322 and the central axis M of the receiving portion 330 can be greater than the distance between the inner wall of the first locking portion 311 and the central axis M of the receiving portion 330. Thus, the unlocking action portion 322 of the locking member 320 can be naturally located outside the receiving portion 330 in the locked state without affecting the insertion and retention of the optical fiber connector.

[0117] Alternatively, Fig.15 The locking member 320 of the optical fiber connection port assembly according to another embodiment of the present application is schematically shown. Here, the locking member 320 may have an elastic camber 342 (facing away) protruding outward in the region of the second locking portion 321. When the locking member 320 is installed in the connection port housing 310, the elastic camber 342 may be supported on the inner wall, in particular the bottom, of the connection port housing 310. The elastic camber 342 may be elastically deformed along the unlocking movement direction F by operating, for example, pressing the operating portion 327, so as to cause the locking member 320 to change from the locked state to the unlocked state.

[0118] Alternatively, in other embodiments not shown, the optical fiber connection port assembly 300 may include a spring disposed between the connection port housing 310 and the locking member 320. Here, the locking member 320 may be similar to Fig.15 320 is constructed in the same manner as in the embodiment of the present invention, but may not have the elastic camber 342. The locking member 320 may be biased or preloaded toward the locked state by the spring. When the operating portion 327 is operated, for example, pressed, the locking member 320 as a whole may overcome the elastic force of the spring to change from the locked state to the unlocked state. In such an embodiment, the locking member 320 may be constructed to be rigid or inelastic.

[0119] In some embodiments, Figure 4 and Figure 5 As shown, the optical fiber connection port assembly 300 may further include an optical fiber adapter 350 at least partially located in the connection port housing 310. The optical fiber adapter 350 may be placed in and retained in the connection port housing 310 from the rear end of the connection port housing 310, for example. When viewed in the axial direction, the first locking portion 311, the second locking portion 321 and the unlocking action portion 322 may be located between the optical fiber adapter 350 and the entrance 370 for the optical fiber connector of the optical fiber connection port assembly. Figure 6 and Figure 7As shown, the front end of the fiber optic adapter 350 or the end located in the connection port housing 310 can be adapted to the fiber optic connector 3 to be connected from the entrance 370 to the fiber optic connection port assembly 300, while the rear end of the fiber optic adapter 350 can be adapted to another fiber optic connector, such as an SC connector 360 (see Figure 6 and Figure 7 ). An optical connection can be established between the two fiber optic connectors, in particular between two fiber optic cables each having one of the two fiber optic connectors, by means of the fiber optic adapter 350 .

[0120] During assembly, the fiber optic adapter 350 may first be inserted into the connection port housing 310 from the rear side of the connection port housing 310. Figure 5 As can be seen most clearly, the connection port housing 310 may be configured with an inner flange 317 on the inner wall. The front end of the fiber optic adapter 350 may abut against the inner flange 317 to define the axial position of the fiber optic adapter 350 in the connection port housing 310. Alternatively or additionally, the fiber optic adapter 350 itself may also be configured with an outer flange 355 on the outer wall, and the axial position of the fiber optic adapter 350 in the connection port housing 310 may be defined by the outer flange 355 abutting against the rear end surface of the connection port housing 310. Figure 4 and Figure 5 As shown, a concave first positioning structure 353 may be constructed on the outer wall of the optical fiber adapter 350. Accordingly, the outer contour of the first positioning structure 353 may substantially correspond to the corresponding inner contour 343 of the tail section 340 of the locking member 320 (see Figures 9 to 11 ). In addition, a recessed second positioning structure 354 may be constructed on the outer wall of the fiber optic adapter 350 at a distance from the first positioning structure 353 in the axial direction (for example, before the first positioning structure 353). After the fiber optic adapter 350 is inserted into the connection port housing 310, the locking piece 320 may be installed on the connection port housing 310 and the fiber optic adapter 350 from top to bottom. At this time, the guide pin 341 of the locking piece 320 may be inserted into the corresponding guide hole 315 of the connection port housing 310; and / or the inner contour 343 of the locking piece 320 may cooperate with the outer contour of the first positioning structure 353 of the fiber optic adapter 350; and / or the second positioning structure 354 of the fiber optic adapter 350 may cooperate with the crossbeam 344 of the locking piece 320. As a result, the fiber optic adapter 350, the locking piece 320 and the connection port housing 310 may be assembled together in cooperation with each other. Figure 5 As can be seen most clearly, the recessed first positioning structure 353 and the second positioning structure 354 can prevent the fiber optic adapter 350 from being pulled out of the connection port housing 310 .

[0121] The fiber optic adapter 350, the connection port housing 310 and the locking member 320 may jointly define a receiving portion 330 for receiving the fiber optic connector 3. In order to ensure that the fiber optic connector 3 is inserted into the fiber optic connection port assembly 300 in a desired orientation, the fiber optic connection port assembly 300, such as the fiber optic adapter 350, may include a segment for defining the circumferential orientation of the fiber optic connector 3 relative to the fiber optic connection port assembly 300, and the shape of the segment matches the shape of the corresponding segment of the fiber optic connector. It can be understood that such a shape should be configured to be unique in the circumferential direction (i.e., in the rotation direction around the central axis M), that is, such a shape is neither radially symmetrical about the central axis M nor rotationally symmetrical about the central axis M. Thus, the orientation of the fiber optic connector 3 in the circumferential direction relative to the fiber optic connection port assembly 300 can be uniquely defined by matching the shape of the segment of the fiber optic connection port assembly 300 with the shape of the corresponding segment of the fiber optic connector.

[0122] Specifically, in some embodiments, Fig.32 and Fig.33 As shown, the optical fiber connector 3, here the ferrule housing 43 of the optical fiber connector 3, can have a chamfer 432 extending from its front end to its rear end. The ferrule housing 43 can have a substantially rectangular outer cross-section at least in its front region, preferably as a whole. The chamfer 432 can be constructed on at least one edge of the ferrule housing 43, for example, two or three edges. Here, the chamfer 432 can extend over a partial length of the ferrule housing 43. It is also feasible that the chamfer 432 extends over the entire axial length of the ferrule housing 43. Accordingly, as Fig.33 As shown, the receiving section 351 of the optical fiber adapter 350 for receiving the ferrule housing 43 can have an internal section 352 matching the chamfer 432, and the internal section 352 and the chamfer 432 can uniquely define the circumferential orientation of the optical fiber connector 3 relative to the optical fiber adapter 350 and therefore relative to the optical fiber connection port assembly 300.

[0123] It can be understood that the optical fiber connection port assembly 300 according to the present application can be configured to receive any optical fiber connector having a suitable first locking protrusion and a second locking protrusion and / or an optical fiber cable assembly having such an optical fiber connector. Naturally, the optical fiber connector that can be matched with the optical fiber connection port assembly 300 is not limited to the exemplary embodiment shown in the figure, but can have a variety of configurations.

[0124] Fig.16 The optical fiber communication device according to one embodiment of the present application is schematically shown. The optical fiber communication device is exemplarily present as an optical fiber splice box 500. Without limitation, the optical fiber communication device can be any device having an optical fiber connection port, such as an optical fiber router, an optical fiber switch, an optical fiber transceiver, an optical fiber modem, etc.

[0125] like Fig.16 and Fig.21 As can be seen most clearly, the optical fiber splice box 500 may include 10 connection ports 510 for receiving optical fiber cable assemblies. Fig.21 In the embodiment, plugs 600 are installed in the eight connection inlets 510. The plugs 600 can be configured to prevent dust and water from entering the optical fiber splice box 500. When necessary, the corresponding plugs 600 can be pulled out from the connection inlet 510 to connect the corresponding optical fiber cable assembly. Fig.17 and Fig.21 As shown, the optical fiber splice closure 500 may include at least one, and here may be 10, optical fiber connection port assemblies 300 housed in a splice closure housing 520. Fig.17 For the sake of clarity, only one of the optical fiber connection port assemblies 300 is shown. The interconnection between the optical fiber splice closure 500 and the optical fiber cable assembly can be achieved by means of the optical fiber connection port assembly 300. The entrance 370 of the optical fiber connection port assembly 300 can be aligned with the connection entrance 510 of the optical fiber communication device.

[0126] In the illustrated embodiment, the connector housing 520 may include a housing support 531 (see FIG. Fig.17 ) and Panel 532 (see Fig.19 ) and includes a housing cover 540 (see Fig.18 ). The connection entrance 510 of the optical fiber splice box 500 can be defined by a panel 532. The internal space of the splice box housing 520 can be defined by the housing body 530 and the housing cover 540. In the illustrated embodiment, the optical fiber connection port assemblies 300 can be arranged in two rows stacked one above the other in the optical fiber splice box 500. In order to facilitate the installation of the optical fiber connection port assembly 300 in the optical fiber splice box 500, as shown in FIG. Fig. 20 and Fig.21 As shown, the optical fiber splice box 500 may include a first housing cover 541 and a second housing cover 542, and the first housing cover 541 and the second housing cover 542 may be respectively mounted on the corresponding side of the housing support 531. Thus, a row of optical fiber connection port assemblies 300 can be conveniently arranged in the housing support 531 from both sides, and then the corresponding first housing cover 541 or the second housing cover 542 may be covered and fixed, for example, by high-frequency induction welding, to the housing support 531. Alternatively or additionally, the first housing cover 541 and the second housing cover 542 may also be, for example, bonded or ultrasonically welded to the housing support 531.

[0127] like Fig.17As shown, the internal space of the splice box housing 520 can be divided into a first space 521 and a second space 522 by means of the housing body 530, in particular the first partition wall 533 of the housing bracket 531. The optical fiber connection port assembly 300, in particular the connection port housing 310 and the locking member 320 thereof, can be arranged in the first space 521. The functional components of the optical fiber splice box 500, such as the optical fiber connection tray and the jumper (not shown), can be arranged in the second space 522.

[0128] The housing support 531 may include a second partition wall 535 for separating two adjacent rows of optical fiber connection port assemblies 300 from each other. The second partition wall 535 may only exist in the area of ​​the first space 521. In order to define the position of the optical fiber connection port assembly 300 in the splice box housing 520, especially the position of the connection port housing 310 in the first space 521, the splice box housing 520 (here, its second partition wall 535) may be configured with a positioning recess 536. Accordingly, as shown in FIG. Fig.13 and Fig.14 As shown, the bottom side of the connection port housing 310 may be configured with a positioning protrusion 318 that matches the positioning recess 536 .

[0129] Alternatively or additionally, in some embodiments, Figure 12 to Figure 14 As shown, the lower area of ​​the connection port housing 310 may have a notch 319. When looking at the front side of the connection port housing 310, the notch 319 may be configured, for example, at the lower left corner and the lower right corner of the connection port housing 310. A boss corresponding to the notch 319 may be configured in the second partition wall 535 of the joint box housing 520, for example, so that the position of the connection port housing 310 in the joint box housing 520 can be limited by the cooperation of the boss and the notch 319.

[0130] Continue to refer to Fig.17 , the first partition wall 533 may include a communication hole 534 that communicates the first space 521 with the second space 522. The optical fiber adapter 350 of the optical fiber connection port assembly 300 may, for example, pass through the corresponding communication hole 534 from the second space 522 and be inserted into the connection port housing 310 located in the first space 521 during assembly. A sealing ring 357 may be provided between the optical fiber adapter 350 and the communication hole 534 (see Figure 5 and Figure 7 The sealing ring 357 can be used to seal the first space 521, the optical fiber adapter 350 and the second space 522.

[0131] like Fig.18 and Fig.21 As shown, the housing cover 540 may include a first retaining hook 543 (particularly extending into the first space 521 in the assembled state). Fig.19 As shown, the panel 532 may include a second retaining hook 537. The panel 532 may be hooked on the housing cover 540 by means of the mutual cooperation between the first retaining hook 543 and the second retaining hook 537 (see Fig. 20 ).

[0132] In some embodiments, Fig.19 As shown, the connection entrance 510 and the second retaining hook 537 can be located in the surface portion 538 of the panel 532 that forms the front side of the optical fiber splice box 500. From the left and right sides of the surface portion 538, legs 539 extending substantially perpendicular to the surface portion 538 can be respectively constructed, and the two legs 539 can extend backward in parallel to each other in the direction of the housing bracket 531 (see Fig.16 ).like Fig.17 As shown, the shell bracket 531 can have push-in grooves 545 corresponding to the legs 539 on the left and right side walls. During assembly, the legs 539 of the panel 532 can slide in the push-in grooves 545 and guide the installation of the panel 532.

[0133] Fig.21 The fiber optic splice closure 500 is shown partially assembled with the faceplate 532 not yet installed. Fig.21 As can be seen in the figure, in some embodiments, the first retaining hook 543 of the housing cover 540 extending into the first space 521 can serve as a front stopper for the optical fiber connection port assembly 300, in particular, the connection port housing 310, to prevent the connection port housing 310 from sliding forward out of the splice box housing 520. Alternatively or additionally, the first retaining hook 543 and the first partition wall 533 (see Fig.17 ) defines the axial position of the connection port housing 310 in the splice box housing 520. "Axial" here can be basically understood as the insertion direction R when the optical fiber cable assembly is inserted into the optical fiber connection port assembly 300 and thus connected to the optical fiber splice box 500.

[0134] like Fig.16 , Fig.18 , Fig. 20 and Fig.21 As shown, the housing cover 540 may include a through hole 544 for the manipulation portion 327 of the optical fiber connection port assembly 300. Thus, the manipulation portion 327 may be exposed from the housing of the optical fiber splice closure 500, so that the manipulation portion 317 may be manipulated from the outside of the optical fiber splice closure 500. By manipulating the manipulation portion 327, the connected optical fiber cable assembly may be disconnected from the optical fiber splice closure 500.

[0135] In some embodiments, at least one of the fiber optic connection port assemblies 300 can form the input end of the fiber optic splice closure 500, and the signal can be input via the fiber optic cable connected to the input end. Other fiber optic connection port assemblies 300 can form the output end of the fiber optic splice closure 500, and the signal can be output to the fiber optic cable connected to the output end. Fig.21 In the embodiment, one or both of the two connection inlets 510 on the left side that are not provided with plugs 600 may be input ends of the optical fiber splice closure 500. In the case where there is only one input end, the other connection inlet 510 may be permanently sealed to prevent water and / or dust from entering. Fig.21 In the figure, the eight connection inlets 510 on the right side provided with plugs 600 may be output ends of the optical fiber splice box 500.

[0136] Not limited to the illustrated embodiment, fiber optic communication equipment, such as the fiber optic splice box 500, may also include any number of fiber optic connection port assemblies 300 as required, and the fiber optic connection port assemblies 300 may be arranged in the fiber optic communication equipment in any suitable manner.

[0137] For example, in some embodiments not shown, the optical fiber splice box 500 may include only one row or only one layer of optical fiber connection port assemblies 300. In this case, the optical fiber splice box 500 may have only one housing cover 540, and the contents and features related to the second partition wall 535 described above may be correspondingly transferred to the bottom plate of the optical fiber splice box 500, and the optical fiber connection port assembly 300, especially its connection port housing 310, may be installed on the bottom plate of the optical fiber splice box 500.

[0138] The present application also relates to an optical fiber communication system, which may include an optical fiber communication device according to the present application and an optical fiber cable assembly. The optical fiber cable assembly may be equipped with the optical fiber communication device and may be connected to the optical fiber communication device via an optical fiber connection port assembly. The optical fiber cable assembly may include an optical fiber cable and an optical fiber connector, and the optical fiber connector may include a first locking protrusion and a second locking protrusion.

[0139] Combine the following Figures 22 to 31 Exemplary embodiments of the optical fiber cable assembly 1 and the optical fiber connector 3 thereof suitable for connecting with the optical fiber connection port assembly 300 and / or optical fiber communication equipment, such as the optical fiber splice closure 500 according to the present application are described in more detail.

[0140] Fig. 22 The figure schematically shows a perspective view of an optical fiber cable assembly 1 that can cooperate with an optical fiber connection port assembly 300 and / or an optical fiber communication device, such as an optical fiber splice box 500. Figure 22 to Figure 24As shown, the optical fiber cable assembly 1 may include an optical fiber cable 2 and an optical fiber connector 3 mounted on the optical fiber cable 2. The optical fiber connector 3 may also be used to connect the optical fiber cable 2 to another optical fiber cable or optical fiber segment so as to establish an optical connection between the optical fiber cable 2 and the other optical fiber cable or optical fiber segment. In addition, the optical fiber connector 3 may also be used to connect the optical fiber cable 2 to other devices, such as an optical fiber splice box 500, a laser, a receiver, or a splitter.

[0141] The optical fiber connector 3 may be, for example, Figure 8 As shown, the optical fiber connector 3 includes a first locking protrusion 31 and a second locking protrusion 32. The first locking protrusion 31 and the second locking protrusion 32 of the optical fiber connector 3 can be radially opposite to each other. Advantageously, the first locking protrusion 31 and the second locking protrusion 32 of the optical fiber connector 3 can be rotationally symmetrical with each other about the central axis of the optical fiber connector 3, which will be described in more detail later in conjunction with the accompanying drawings.

[0142] The optical fiber connector 3 may include a ferrule assembly 4 and a connector housing 5, wherein the ferrule assembly 4 is disposed in the head region of the connector housing 5. The optical fiber connector 3 may include an axially through-going internal passage, wherein the internal passage is configured to allow the optical fiber (of the optical fiber cable 2) to extend through the optical fiber connector 3. In addition, the optical fiber connector 3 may include an optical cable fixing member 6 (see Fig.23 and Fig.25 ). When installing the optical fiber connector 3 on the optical fiber cable 2, the optical fiber cable 2 can be passed through the tail sleeve 9, the cable fixture 6, the connector housing 5 and the ferrule assembly 4 in sequence. After the optical fiber of the optical fiber cable 2 is inserted and fixed on the ferrule assembly 4, the ferrule assembly 4, the connector housing 5 and the cable fixture 6 can be connected and assembled to each other, which will be described in detail below in conjunction with the specific structure of each component of the optical fiber connector 3. Finally, for example, after the optical fiber cable 2 and the optical fiber connector 3 are sealed with a heat shrink tube at the tail area of ​​the optical fiber connector 3 when necessary, the tail sleeve 9 can be pushed onto the optical fiber connector 3 to obtain the following. Fig. 22 The optical fiber cable assembly 1 is shown.

[0143] like Fig.25 As shown, in order to adapt to different optical fiber cables 2, the optical fiber connector 3 can have an optical cable fixing part 6 matched with the optical fiber cable 2 to be used. The optical fiber cable 2 to be used can be, for example, a 5mm round cable, a 3mm round cable, a 2mm×3mm / 2mm×5mm butterfly cable (for example, a butterfly cable with metal reinforcement), a 4mm×7mm flat cable, a 4mm×8mm flat cable, a 6mm armored round cable, etc. Figure 4 2 shows, by way of example, a first optical fiber cable 21 in the form of a 3 mm round cable and a second optical fiber cable 22 in the form of a 4×7 mm flat cable, and a first optical fiber cable fixture 61 and a second optical fiber cable fixture 62 respectively associated therewith.

[0144] The first cable fixture 61 and the second cable fixture 62 may respectively have a base 63 and an extension 64 extending forward from the base 63 and having a reduced radial dimension relative to the base 63. Here, the bases 63 of the first cable fixture 61 and the second cable fixture 62 may have the same outer peripheral dimensions, and the outer peripheral dimensions of the base 63 may be set so that when the extension 64 is pushed into the rear of the connector housing 5, the base 63 can abut against the rear end 51 of the connector housing 5. To this end, the base 63 may have an outer diameter that is at least equal to, preferably slightly larger than, the rear end 51 of the connector housing 5. It is also conceivable that the connector housing 5 has a necking portion in the rear region, and the base 63 can be pushed into the connector housing 5 and abut against the necking portion.

[0145] from Fig.25 As can be seen, the first optical cable fixture 61 has a through hole 64 matched with the cross-section of the first optical fiber cable 21, and the second optical cable fixture 62 has a through hole 64 matched with the cross-section of the second optical fiber cable 22, so that the first optical fiber cable 21 can pass through the first optical cable fixture 61 without problem, and the second optical fiber cable 22 can pass through the second optical cable fixture 62 without problem.

[0146] In order to hold the optical cable fixture 6 on the connector housing 5, the optical cable fixture 6 may include a latch hook 65, here two radially opposed latch hooks 65. The connector housing 5 may have a mating hole 52 corresponding to the latch hook 65 on the side wall of the tail region. When the extension 64 is pushed into the tail of the connector housing 5, the latch hook 65 may be latched into the corresponding mating hole 52, thereby positioning and holding the optical cable fixture 6 (and therefore the optical fiber cable 2) on the connector housing 5.

[0147] In addition, the connector housing 5 may include a glue injection hole 53 . Glue can be injected into the connector housing 5 via the glue injection hole 53 .

[0148] like Fig.23 As can be seen most clearly, in the illustrated embodiment, the ferrule assembly 4 may include a ferrule 41, a spring 42, and a ferrule housing 43. The ferrule 41 may be a ceramic ferrule in particular and may have a suitable ferrule end face structure, such as a PC, APC, UPC, or other end face structure. The ferrule 41 may have an optical fiber hole for allowing the optical fiber of the optical fiber cable 2 to pass through. The ferrule 41 may be mostly located in the ferrule housing 43, and the front end of the ferrule 41 may extend from the front end of the ferrule housing 43 (see FIG. Fig.24 ). One end of the spring 42 may be supported on the connector housing 5 , and the other end of the spring 42 may be supported on the ferrule 41 , so that the ferrule 41 can be pressed against the ferrule housing 43 by means of the spring 42 .

[0149] In order to hold the ferrule assembly 4 on the connector housing 5, the ferrule housing 43 may include a connection groove 431 configured in its rear region (see Fig.32 ), and the connector housing 5 may include a connection key 54 constructed in its head region (see Fig.26 and Fig.28 ). The connecting key 54 and the connecting groove 431 may both extend in the axial direction. Fig.24 As shown, the insert housing 43 can be mounted on the connector housing 5 in a manner that the connecting key 54 engages in the connecting groove 431. A key-slot pair consisting of only one connecting groove 431 and one connecting key 54 can be configured, or a plurality of key-slot pairs consisting of a corresponding connecting groove 431 and a corresponding connecting key 54 can be configured. Advantageously, a key-slot pair can be provided on each of the opposite sides.

[0150] like Fig.24 It can be seen most clearly that, when the ferrule housing 43 is installed on the connector housing 5, the outer surface of the ferrule housing 43 can smoothly connect and transition with the outer surface of the connector housing 5 at least in a partial area, preferably on the entire periphery. In other embodiments, when the ferrule housing 43 is installed on the connector housing 5, the connection key 54 can protrude from the ferrule housing 43. Here, except for the area where the connection key 54 and the connection groove 431 are mutually engaged, the outer surface of the ferrule housing 43 can smoothly connect and transition with the outer surface of the connector housing 5.

[0151] exist Figure 26 to Figure 28 In the illustrated embodiment, the connector housing 5 may include an internal passage 81 (see Fig. 27 and Fig.28 ) and includes a retaining ring 7. The retaining ring 7 can be sleeved on the connector body 8. Here, the entire axial length of the connector housing 5 can be defined by the connector body 8. Therefore, the previously described cable fixture 6 can be retained in the connector body 8 in the tail region of the connector body 8, and the previously described ferrule assembly 4 can be retained in the connector body 8 in the head region of the connector body 8. The retaining ring 7 can be sleeved on the connector body 8 in the middle region of the connector body 8 (i.e., the region between the head region and the tail region of the connector body 8) and is therefore located between the ferrule assembly 4 and the cable fixture 6 in the assembled state of the optical fiber connector 3.

[0152] In order to realize the connection between the optical fiber connector 3 and the matching device, such as the optical fiber connection port assembly 300, the optical fiber adapter, the dust cover, the optical fiber adapter, etc., Figure 26 to Figure 28As shown, the connector housing 5, in particular the retaining ring 7, may include an elastic snap-in structure 71, in particular, two snap-in structures 71 that are rotationally symmetrical about the central axis of the optical fiber connector 3. Only one of the snap-in structures 71 will be described in detail below, and the corresponding content is naturally also applicable to the other snap-in structure 71 and will not be described in detail. The snap-in structure 71 can move from an initial state to a deformed state that is biased inwardly (i.e., toward the internal channel of the optical fiber connector 3 or the central axis of the connector housing 5) relative to the initial state, and can move from the deformed state toward the initial state under the action of a reset elastic force. The snap-in structure 71 may have a locking protrusion 72 that protrudes outward (i.e., away from the internal channel of the optical fiber connector 3 or the central axis of the connector housing 5). For example, Figure 8 As shown, when the optical fiber connector 3 is inserted into the receiving portion 330 of a mating device, such as the optical fiber connection port assembly 300, the locking protrusion 72 can cooperate with the first locking portion 311 and the second locking portion 321 respectively, thereby locking the optical fiber connection port assembly 300 and the optical fiber connector 3 to each other.

[0153] Specifically, Figure 29 to Figure 31 As shown, the retaining ring 7 may include an annular base 70, and the snap-fit ​​structure 71 may be connected to the base 70 in the front. The snap-fit ​​structure 71 may include a first section 711 (basically starting from the base 70) extending in an elongated shape in the axial direction and a second section 712 extending in an elongated shape in the circumferential direction starting from the first section 711. The snap-fit ​​protrusion 72 may be configured in a region of the second section 712 away from the first section 711. Here, due to the elasticity of the material of the retaining ring 7 itself, the second section 712 may act as a kind of elastic arm. Specifically, when a force from outside to inside is applied to the region of the second section 712 away from the first section 711, especially to the snap-fit ​​protrusion 72, the second section 712 may basically take the first section 711 (especially the transition region 713 between the second section 712 and the first section 711) as an axis or a fulcrum, and may be biased and deformed inwardly under the action of the force, and may move from the deformed state to the initial state shown in the figure due to its own elasticity when the force is removed. Advantageously, the first section 711 and the second section 712 can be constructed as a plate or thin-walled structure, which is conducive to giving the required elasticity to the buckle structure 71. Here, "thin-walled" can be understood in particular that the thickness of the first section 711 and the second section 712 is significantly smaller than its surface extension size.

[0154] Reference Fig. 27 , Fig.29 and Fig.31, the locking protrusion 72 may include a first guide slope 721 that rises along a first direction R1. Here, the first direction R1 points from the head of the optical fiber connector 3 to the tail of the optical fiber connector. It can be understood that when the optical fiber connector 3 is connected to the optical fiber connection port assembly 300, the optical fiber connection port assembly 300 generally moves relative to the optical fiber connector 3 along the first direction R1. The optical fiber connector 3 can be at least partially received in the receiving portion 330 of the optical fiber connection port assembly 300. When the optical fiber connector 3 is pushed into the receiving portion 330 of the optical fiber connection port assembly 300, the first guide slope 721 can first contact, for example, the inner wall of the receiving portion 330, and the force applied by the inner wall of the receiving portion 330 on the first guide slope 721 can make the locking structure 71, especially the second section 712, together with the locking protrusion 72 biased inwardly as the optical fiber connection port assembly 300 moves along the first direction R1, thereby allowing the locking structure 71 to enter the receiving portion 330 of the optical fiber connection port assembly 300. As the optical fiber connection port assembly 300 continues to move in the first direction R1, the locking protrusion 72 can engage with the corresponding first locking portion 311 or second locking portion 321 due to the outward rebound of the second section 712, thereby locking the optical fiber connector 3 and the optical fiber connection port assembly 300 to each other.

[0155] like Fig. 27 As can be seen most clearly, the locking protrusion 72 may include a top 722 connected to the first guide slope 721 when viewed along the first direction R1. The top 722 forms the highest part of the locking protrusion 72, which has the farthest radial distance relative to the longitudinal axis of the optical fiber connector 3. The locking protrusion 72 may also include a step portion 723 connected to the top 722 along the first direction R1. The top 722 may descend along the first direction R1 via the step portion 723 and connect to the outer surface of the second section 712. The step portion 723 may form a locking action surface, and when the optical fiber connector 3 is retained in the optical fiber connection port assembly 300, the locking action surface or the step portion 723 may abut against the corresponding locking surface of the first locking portion 311 or the second locking portion 321 of the optical fiber connection port assembly 300 to prevent the optical fiber connector 3 from being pulled out of the optical fiber connection port assembly 300 along the first direction R1.

[0156] In order to unlock the optical fiber connector 3 and the optical fiber connection port assembly 300, the locking protrusion 72, especially the first locking protrusion 31 (see Figure 8 ) exerts an effect so that the second section 712 is elastically deformed inwardly, thereby disengaging the first locking protrusion 31 and the first locking portion 311 from each other.

[0157] In order to define the relative position of the retaining ring 7 and the connector body 8, the connector body may include a positioning rib 85 extending in the axial direction on the outer wall (see Fig.26 ), and the retaining ring 7 may include a positioning groove 75 corresponding to the positioning rib 85 on the inner wall, especially on the inner wall of the base 70 (see Fig.30 The positioning rib 85 and the positioning groove 75 can cooperate to define the relative position of the retaining ring 7 and the connector body 8 in the circumferential direction. The positioning rib 85 can have a rounded portion or a sharpened portion at the end facing the rear of the connector body 8 to facilitate the positioning rib 85 to be inserted into the positioning groove 75.

[0158] like Fig.26 and Fig. 27 As shown, the connector body 8 may include a recess 82 extending in the circumferential direction on the outer wall. When the retaining ring 7 is mounted on the connector body 8, the second section 712 of the snap structure 71 may be substantially located in the region of the recess 82. Here, the recess 82 may form an active space for the second section 712 of the snap structure 71 to allow the second section 712 to be elastically biased inwardly. The extension dimension of the recess 82 in the circumferential direction may be adapted to the extension dimension of the second section 712 in the circumferential direction. In the embodiment shown in the figure, one recess 82 may extend in the circumferential direction at an angle of, for example, 120° to 150°.

[0159] like Fig. 27 and Fig.31 As shown, the snap structure 71 may include a retaining protrusion 76 located on the inner wall of the second section 712. The retaining protrusion 76 may transition to the inner wall of the second section by means of a second guide ramp 77 along a second direction opposite to the first direction R1. The retaining ring 7 may be pushed from the rear of the connector body 8 to the connector body 8, and during this process, the force applied by the connector body 8 to the second guide ramp 77 may cause the second section 712 of the retaining ring 7 to open slightly. After the positioning rib 85 of the connector body 8 is inserted into the positioning groove 75 of the retaining ring 7, as the retaining ring 7 continues to be pushed forward, the second section 712 may rebound inwardly in the area of ​​the recess 82 of the connector body 8. Here, the retaining protrusion 76 may cooperate with the recess 82 to define the relative position of the retaining ring 7 and the connector body 8 in the axial direction, in particular to prevent the retaining ring 7 from moving relative to the connector body 8 along the first direction R1. In addition, the front end of the retaining ring 7 may abut against the flange of the connector body 8, thereby preventing the retaining ring 7 from being pushed forward further. In the embodiment shown in the figure, the retaining projection 76 can be located at a position corresponding to the latching projection 72 with respect to the second section 712. That is, the retaining projection 76 and the latching projection 72 can both be located in the free end region of the second section 712 away from the first section 711.

[0160] It can be understood that the connector housing 5 is not limited to the two-piece construction type described above, and the connector body 8 and the retaining ring 7 can be integrally formed with each other to form a one-piece connector housing 5. The details described above for the connector body 8 and the retaining ring 7 can be transferred to the one-piece connector housing 5 accordingly.

[0161] like Fig.24 As shown, the optical fiber connector 3, in particular the connector body 8, may further include at least one annular groove 83 located between the buckle structure 71 and the head of the optical fiber connector 3, in particular the ferrule assembly 4, and a sealing ring 84 may be provided in the annular groove 83 (see Figure 2 ). The sealing ring 84 can be used to seal between the optical fiber connector 3 and the optical fiber connection port assembly 300 .

[0162] In some embodiments, the plug 600 for the optical fiber splice box 500 may have a similar structure, in particular, a snap-fit ​​structure identical to that of the optical fiber connector 3. In some embodiments, the plug 600 may have a similar structure to that of the optical fiber connector 3. Figure 29 to Figure 30 The retaining ring 7 is shown. Thus, the plug 600 can be installed in the optical fiber connection port assembly 300 of the optical fiber splice closure 500 in a similar manner to the optical fiber connector 3.

[0163] In addition, in some embodiments, in order to define the axial position of the optical fiber connector 3 in the optical fiber connection port assembly 300, as shown in FIG. Fig.32 and Fig.33 As shown, the ferrule housing 43 of the optical fiber connector 3 may have a limiting step 433. When the optical fiber connector 3 is pushed into the optical fiber connection port assembly 300, the pushing depth of the optical fiber connector 3 may be limited by the limiting step 433 abutting against the corresponding limiting stop 358 of the optical fiber adapter 350.

[0164] It can be understood that the optical fiber cable assembly 1 and the optical fiber connector 3 thereof that can be adapted to the optical fiber connection port assembly 300 and / or the optical fiber communication equipment, such as the optical fiber splice box 500 of the present application are not limited to the exemplary embodiments shown in the figure, but can have a variety of configurations. For example, in some embodiments not shown, the first locking protrusion and the second locking protrusion of the optical fiber connector can be constructed as two elastic pins radially opposite to each other, which can be radially extended outward from the connector body and can be pre-tightened in the outward extended state, for example, by means of an elastic member, such as a spring. In the outward extended state, the elastic pin can be respectively engaged with the first locking portion and the second locking portion of the optical fiber connection port assembly. For example, in the case of pressing the operating portion of the optical fiber connection port assembly, the unlocking action portion can act on the corresponding elastic pin, and the elastic pin can be radially retracted inwardly to overcome the elastic force of the spring. Naturally, the second locking portion also moves away from another elastic pin in this process, thereby realizing the unlocking of the optical fiber connector and the optical fiber connection port assembly.

[0165] Although the exemplary embodiments of the present application have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present application without departing from the spirit and scope of the present application in essence. Therefore, all changes and modifications are included in the protection scope of the present application.

Claims

1. An optical fiber connection port assembly, characterized in that: The optical fiber connection port assembly includes a connection port housing and a locking member, wherein the connection port housing and the locking member together define at least a portion of a receiving portion for receiving an optical fiber connector. The connection port housing includes a first locking portion for a first locking protrusion of the optical fiber connector, and the locking member includes a second locking portion for a second locking protrusion of the optical fiber connector and an unlocking action portion including the first locking protrusion of the optical fiber connector, The locking member can be switched between a locked state and an unlocked state. Compared with the locked state, in the unlocked state, the second locking portion of the locking member is away from the receiving portion and the unlocking action portion of the locking member is close to the receiving portion.

2. The optical fiber connection port assembly according to claim 1, characterized in that: The optical fiber connection port assembly is configured to allow the optical fiber connector to be inserted into the receiving portion of the optical fiber connection port assembly along an insertion direction; and / or In the locked state, the fiber optic connection port assembly prevents the fiber optic connector located in the receiving portion from moving against the insertion direction; and in the unlocked state, the fiber optic connection port assembly allows the fiber optic connector located in the receiving portion to move against the insertion direction; and / or The first locking portion is configured to interact with a first latching projection of the optical fiber connector located in the receiving portion in the locked state, and the second locking portion is configured to interact with a second latching projection of the optical fiber connector located in the receiving portion in the locked state; and / or The unlocking action portion of the locking member is configured to act on the first locking protrusion of the optical fiber connector located in the receiving portion in the unlocked state, so that the first locking protrusion is disengaged from the first locking portion; and / or The second locking portion of the locking member is configured to leave the second locking protrusion of the optical fiber connector located in the receiving portion in the unlocked state, so that the second locking protrusion is disengaged from the second locking portion; and / or The locking member includes an outwardly protruding operating portion in the region of the unlocking action portion, and the locking member can be changed from a locked state to an unlocked state by pressing the operating portion; and / or The second locking portion and the unlocking action portion are opposite to each other in an unlocking movement direction of a locking member, and the locking member can be transferred from a locked state to an unlocked state along the unlocking movement direction.

3. The optical fiber connection port assembly according to claim 1 or 2, characterized in that: The locking member includes a surrounding portion that at least partially defines a receiving portion, the surrounding portion includes a first semi-cylindrical shell-shaped section having a second locking portion and a second section having an unlocking action portion, the first section and the second section together form the surrounding portion, preferably: the distance between the second locking portion and the central axis of the receiving portion is smaller than the distance between the unlocking action portion and the central axis of the receiving portion; and / or the distance between the second locking portion and the central axis of the receiving portion corresponds to the distance between the first locking portion and the central axis of the receiving portion.

4. The optical fiber connection port assembly according to any one of claims 1 to 3, characterized in that: The locking element is at least partially elastic, and can be elastically deformed from a locked state to an unlocked state, and can be transformed from the unlocked state to the locked state under the action of a restoring elastic force. Preferably: The locking member includes an elastic arm extending in the axial direction, and the elastic arm is connected to the surrounding part. Preferably: the elastic arm is connected to the second section of the surrounding part; and / or the connection port housing includes a support portion for the elastic arm; and / or the locking member includes a positioning recessed portion, and the connection port housing includes a positioning protrusion corresponding to the positioning recessed portion; and / or the locking member includes a guide pin, and the connection port housing includes a guide hole corresponding to the guide pin; and / or the connection port housing includes a clearance opening for at least a part of the first section of the locking member; and / or In the region of the second locking portion, the locking element has an outwardly projecting elastic curvature which is supported on the inner wall of the connecting port housing.

5. The optical fiber connection port assembly according to any one of claims 1 to 4, characterized in that: The fiber optic connection port assembly includes a spring disposed between the connection port housing and the locking member, the spring maintaining the locking member in a locked state; and / or The optical fiber connection port assembly comprises an optical fiber adapter at least partially located in the connection port housing, preferably: viewed in the axial direction, the first locking portion, the second locking portion and the unlocking action portion are located between the optical fiber adapter and the entrance of the optical fiber connection port assembly; And / or the fiber optic adapter, the connection port housing and the locking piece jointly define a receiving portion for receiving the fiber optic connector, the fiber optic adapter includes a segment for defining the relative orientation of the fiber optic connector in the circumferential direction relative to the fiber optic connection port assembly, the shape of the segment matching the shape of the corresponding segment of the fiber optic connector.

6. An optical fiber communication device, characterized in that: The fiber optic communication device comprises at least one fiber optic connection port assembly according to any one of claims 1 to 5. Preferably, the operating portion of the fiber optic connection port assembly is exposed from the housing of the fiber optic communication device so that the operating portion can be operated from the outside of the fiber optic communication device.

7. The optical fiber communication device according to claim 6, characterized in that: The optical fiber communication device is a splice closure, which comprises a splice closure housing and a plurality of optical fiber connection port assemblies arranged in the splice closure housing. Preferably: The splice box housing comprises a housing cover and a housing body, the housing body comprises a first partition wall, the first partition wall divides the internal space of the splice box housing into a first space and a second space, the connection port housing and the locking member of the optical fiber connection port assembly are arranged in the first space, and the optical fiber connection tray is arranged in the second space; and / or The first partition wall comprises a connecting hole connecting the first space and the second space, and the optical fiber adapter of the optical fiber connection port assembly passes through the connecting hole. Preferably, a sealing ring is provided between the optical fiber adapter and the connecting hole; and / or The shell body includes a shell bracket and a panel, and the panel defines a connection entrance for the optical fiber connector. Preferably, the shell cover includes a first retaining hook extending into the first space, and the panel includes a second retaining hook for cooperating with the first retaining hook. Preferably, the axial position of the connection port shell in the optical fiber communication device is defined by the first retaining hook and the first partition wall.

8. The optical fiber communication device according to claim 6 or 7, characterized in that: The housing cover and the housing body are fixed relative to each other by means of high frequency induction welding; and / or The splice box has at least two rows of optical fiber connection port components stacked one above the other; and / or The splice closure housing comprises a second partition wall, wherein the second partition wall is configured to separate two adjacent rows of optical fiber connection port assemblies from each other; and / or The joint box comprises a first housing cover and a second housing cover as housing covers; and / or The optical fiber communication device comprises a plug for an optical fiber connection port assembly, wherein the plug comprises a first locking protrusion and a second locking protrusion.

9. An optical fiber communication system, characterized in that: The optical fiber communication system comprises an optical fiber communication device and an optical fiber cable assembly according to any one of claims 6 to 8, wherein the optical fiber cable assembly comprises an optical fiber cable and an optical fiber connector, and the optical fiber connector comprises a first locking protrusion and a second locking protrusion. Preferably, the first locking protrusion and the second locking protrusion of the optical fiber connector are radially opposite to each other.

10. The optical fiber communication system according to claim 9, characterized in that: The optical fiber connector includes two elastic snap-in structures, which can move from an initial state to a deformed state biased inwardly relative to the initial state, and can move from the deformed state toward the initial state under the action of a reset elastic force, wherein one snap-in structure has a first locking protrusion protruding outward, and the other snap-in structure has a second locking protrusion protruding outward, preferably: the two snap-in structures are rotationally symmetrical to each other about the center axis of the optical fiber connector; and / or the snap-in structure includes a first section extending in an axial direction and a second section extending from the first section in a circumferential direction, the locking protrusion is constructed in an area of ​​the second section away from the first section, preferably, the first section and the second section are constructed in a plate-like shape.

11. The optical fiber communication system according to claim 9 or 10, characterized in that: The locking protrusion includes a first guide slope rising along a first direction, wherein the first direction points from the head of the optical fiber connector to the tail of the optical fiber connector. Preferably, viewed along the first direction, the locking protrusion sequentially includes a top and a step portion connected to the first guide slope, and the step portion forms a locking action surface.

12. The optical fiber communication system according to claim 10 or 11, characterized in that: The connector housing comprises a connector body having an internal passage and a retaining ring having the snap-fit ​​structure, wherein the retaining ring is sleeved on the connector body, and the internal passage is configured for allowing the optical fiber to extend through the optical fiber connector; and / or The retaining ring comprises an annular base, and the buckle structure is connected to the base; and / or The connector body includes a positioning rib extending in the axial direction on the outer wall, and the retaining ring includes a positioning groove corresponding to the positioning rib on the inner wall, and the positioning rib and the positioning groove cooperate to define the relative position of the retaining ring and the connector body in the circumferential direction; and / or The connector body includes a recess extending in a circumferential direction on the outer wall. When the retaining ring is mounted on the connector body, the second section of the snap-fit ​​structure is located in the area of ​​the recess. The recess forms a movable space for the second section of the snap-fit ​​structure. Preferably, the snap-fit ​​structure includes a retaining protrusion located on the inner wall of the second section. When the retaining ring is mounted on the connector body, the retaining protrusion cooperates with the recess to limit the relative position of the retaining ring and the connector body in the axial direction. Preferably: the retaining protrusion transitions to the inner wall of the second section along a second direction by means of a second guide slope, and the second direction points from the tail of the optical fiber connector to the head of the optical fiber connector; and / or the retaining protrusion is located at a position corresponding to the locking protrusion.

13. The optical fiber communication system according to any one of claims 10 to 12, characterized in that: The optical fiber connector comprises at least one annular groove between the snap structure and the head of the optical fiber connector, and a sealing ring is arranged in the annular groove; and / or The optical fiber connector comprises a ferrule assembly, the ferrule assembly comprises a ferrule, a spring and a ferrule housing, the ferrule abuts against the ferrule housing via the spring and extends from the front end of the ferrule housing, preferably, the ferrule housing comprises a connection groove configured in its tail region, and the connector housing comprises a connection key configured in its head region, the ferrule housing is mounted on the connector housing in a manner that the connection key is engaged in the connection groove, preferably, the connection key and the connection groove extend in the axial direction; and / or The plug core housing has a chamfer extending from its front end to its rear end. Preferably: the plug core housing has a rectangular outer cross-section at least in its front area, the chamfer is constructed on at least one edge of the plug core housing; and / or the chamfer extends over a partial length of the plug core housing.

14. The optical fiber communication system according to any one of claims 9 to 13, characterized in that: When the ferrule housing is mounted on the connector housing, the outer surface of the ferrule housing and the outer surface of the connector housing are smoothly connected to each other at least in a partial area; and / or When the ferrule housing is mounted on the connector housing, the outer surface of the ferrule housing and the outer surface of the connector housing are smoothly connected to each other except for the area of ​​the connection key and the connection groove; and / or The optical fiber connector includes an optical cable fixture, and / or the optical fiber cable assembly includes a tail sleeve.

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