Optical fiber adapter

Abstract

The utility model relates to an optical fiber adapter, which comprises a shell and at least one movable door. The shell is provided with two interfaces which are opposite to each other, and the shell is provided with at least one pair of first plugging grooves which are adjacent to at least one of the two interfaces. The movable door is assembled on at least one of the two connectors. The movable door comprises a door frame and at least one door plate, the door plate is pivoted to the door frame, and the door frame is provided with a pair of first clamping tenons which are inserted into the first inserting grooves in a sliding mode and clamped in the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to an adapter, in particular to an optical fiber adapter. BACKGROUND

[0002] Due to the high frequency width and low loss of optical fiber, it has been widely used as a transmission medium for signals in recent years. In order to transmit signals to a farther distance, high-power laser diodes are developed, which greatly increases the energy coupled to the optical fiber. However, when the above-mentioned high-intensity infrared beam is emitted from one end of the optical fiber, the human eye cannot determine the existence or nonexistence of the beam, and if the operator's eyes are inadvertently exposed to the beam, permanent damage to vision often occurs.

[0003] Furthermore, due to the sensitivity of optical fiber communication transmission to dust, if there is no corresponding protective measure when the adapter is empty or is connected with the corresponding optical fiber connector, dust will enter the interior of the adapter, resulting in an increase in loss and affecting the transmission of optical signals. However, the adapters currently applicable to MPO and MTP optical fiber connectors generally do not have a corresponding dustproof structure, or only an extra dustproof cap is used to cover the unused interface part. For the latter, the user still needs to remove the dustproof cap before performing the connector plugging operation, and the removed dustproof cap also needs to be stored and managed, which is prone to management doubts. SUMMARY

[0004] The utility model provides a kind of optical fiber adapter, with movable door structure that can be opened and closed in response to connector plugging, to improve the convenience of optical fiber adapter in use and have better manageability.

[0005] The optical fiber adapter of the utility model comprises a shell and at least one movable door. The shell has two interfaces opposite to each other, and the shell has at least one pair of first insertion slots adjacent to at least one of the two interfaces. The movable door is assembled to at least one of the two interfaces. The movable door comprises a door frame and at least one door plate, and the door plate is pivotally connected to the door frame. The door frame has a pair of first clamping tenons, which are respectively slidably inserted into the first insertion slots and clamped to the shell.

[0006] Preferably, the two interfaces are a first interface and a second interface, and the first insertion slots communicate with the first interface and are located on opposite sides of the first interface.

[0007] Preferably, the first clamping tenon slides in the first insertion slot along an axial direction, and the axial direction is orthogonal to the plane of the interface.

[0008] Preferably, the first clamping tenon slides in the first insertion slot along an axial direction, and the first insertion slot and the first clamping tenon have a stepped profile along the axial direction to be adapted to each other.

[0009] Preferably, the housing further comprises a plurality of second clamping members respectively adjacent to the first insertion slots and extending from the inner wall of the housing. The movable door further comprises a plurality of second insertion slots adjacent to the first clamping members, and the second clamping members are respectively inserted into the second insertion slots.

[0010] Preferably, the door frame has two side wings opposite to each other and respectively facing the housing, and the first clamping member is a partial structure of the side wings, and the two second insertion slots are located at opposite sides of the first clamping member so that the first clamping member is clamped by the two second clamping members.

[0011] Preferably, the second clamping member has a first arm portion and a second arm portion, and the first arm portion extends from the inner wall of the housing to the inner space and then turns to extend towards the movable door to form the second arm portion.

[0012] Preferably, the movable door further comprises a pair of third clamping members extending from the door frame and located at opposite sides of the door frame and extending away from each other. When the fiber connector is inserted into the fiber adapter, the third clamping members are clamped on the fiber connector.

[0013] Preferably, the first clamping member and the third clamping member belong to the same spring arm structure.

[0014] Preferably, the door frame has two side wings opposite to each other and respectively facing the housing, and the first clamping member is a partial structure of the side wings, and the first clamping member is connected between the side wings and the third clamping members.

[0015] Preferably, the door frame further has a plurality of second fixing portions, and the housing further has a plurality of first fixing portions, so that when the first fixing portions and the second fixing portions are buckled to each other, the door frame is fixed to the housing. One of the first fixing portions and the second fixing portions comprises a fixing hole, and the other of the first fixing portions and the second fixing portions comprises a fixing block, so that when buckled to each other, the fixing block falls into the fixing hole and interferes with each other.

[0016] Preferably, the first fixing portion has a first guide inclined surface and the fixing hole, and the second fixing portion has a second guide inclined surface and the fixing block, and during the process of assembling the movable door into the housing, the first guide inclined surface and the second guide inclined surface are slidably connected to each other and separated, and then the fixing block falls into the fixing hole.

[0017] Preferably, the fiber adapter further comprises a dust cap which is detachably inserted into the housing to seal one of the two interfaces.

[0018] Preferably, the movable door further comprises a pivot and a torsion spring, and the door plate is connected to the door frame through the pivot, and the torsion spring is sleeved on the pivot and abuts between the door plate and the door frame, and the torsion spring constantly drives the door plate to close to the door frame. When the fiber connector is inserted into the adapter, the fiber connector pushes open the door plate and deforms the torsion spring.

[0019] Preferably, the shell further has at least one limiting groove to fit and limit the convex rib of the fiber connector, and the extending direction of the limiting groove is consistent with the plugging direction of the fiber connector relative to the shell.

[0020] Due to the above technical solutions, the utility model has the following beneficial effects:

[0021] Based on the above, the fiber adapter is provided with the first plug-in groove at the at least one interface of the shell, and the movable door is assembled at the interface, so that the first clamping tenon of the movable door is slidably inserted into the first plug-in groove and clamped to the shell, and then the fiber adapter has the movable door at the opening, which can be closed when not in use and can be pushed open by the fiber connector to enter the internal space of the fiber adapter when in use. Accordingly, the movable door provides a movable opening and closing structure to meet the requirements of use and non-use of the interface. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of a fiber adapter according to an embodiment of the utility model.

[0023] Figure 2 is a schematic view of a fiber connector connected through the fiber adapter.

[0024] Figure 3 is an exploded schematic view of the fiber adapter.

[0025] Figure 4 is a component of the fiber adapter drawn from another perspective.

[0026] Figure 5 is an exploded schematic view of the movable door.

[0027] Figure 6 and Figure 7 are partial cross-sectional views of the movable door drawn from different perspectives, respectively.

[0028] Figure 8 is a partial cross-sectional view of the movable door and the shell after assembly.

[0029] Figure 9 and Figure 10 are cross-sectional views of the fiber adapter at different levels, respectively.

[0030] Figure 11 is a partial enlarged view of the shell.

[0031] Figure 12 is Figure 2 a cross-sectional view of the fiber connector of the fiber adapter after being assembled into the fiber adapter.

[0032] Figure 13is a sectional view of the optical fiber adapter and the optical fiber connector after being docked according to another embodiment of the utility model.

[0033] Symbol explanation

[0034] 100: optical fiber adapter

[0035] 110, 410: shell

[0036] 111: first interface

[0037] 112: second interface

[0038] 113: first insertion slot

[0039] 113a: positioning notch

[0040] 114: second clasp

[0041] 114a: first arm part

[0042] 114b: second arm part

[0043] 115: first fixed part

[0044] 115a: first guide inclined surface

[0045] 115b: fixed hole

[0046] 116a, 116b, 416: limiting slot

[0047] 120: movable door

[0048] 121: door frame

[0049] 121a: side wing

[0050] 122: door plate

[0051] 123 torsional spring

[0052] 124: first clasp

[0053] 125: third clasp

[0054] 125a: elastic arm structure

[0055] 126: second fixed part

[0056] 126a: second guide inclined surface

[0057] 126b: fixed block

[0058] 127: second insertion slot

[0059] 128: pivot

[0060] 130: dustproof cap

[0061] 200, 300, 500, 600: fiber connector

[0062] 210, 310, 5120, 610: convex rib

[0063] 220, 320, 520, 620: joint

[0064] 221, 321: vertical surface

[0065] 222, 322: inclined surface

[0066] X-Y-Z: orthogonal coordinate DETAILED DESCRIPTION

[0067] Figure 1 is a schematic view of a fiber adapter according to an embodiment of the present application. Figure 2 is a schematic view of fiber connectors being mated via a fiber adapter. Figure 3 is an exploded schematic view of a fiber adapter. Please refer to Figures 1 to 3 In the present embodiment, the fiber adapter 100 is a field for providing the mating of the fiber connectors 200, 300, and the fiber adapter 100 includes a housing 110 having two interfaces (herein exemplified by a first interface 111 and a second interface 112) opposite to each other, and the fiber connectors 200, 300 are inserted into the housing 110 via the first interface 111 and the second interface 112, respectively, and are mated in the internal space of the housing 110.

[0068] Figure 4 Components of the fiber adapter are shown from another perspective, and herein an orthogonal coordinate X-Y-Z is provided to facilitate the description of the components. Please refer to Figure 3 and Figure 4 In response to the aforementioned requirements for dust prevention and operational convenience, the fiber adapter 100 of the present embodiment further includes a movable door 120 assembled at the first interface 111 of the housing 110, and the housing 110 further has first insertion grooves 113 located on opposite side walls of the housing 110. The movable door 120 includes a door frame 121 and at least one door plate 122, and the door plate 122 is pivotally connected to the door frame 121. More importantly, the door frame 121 has a pair of first clamping tenons 124 that are respectively and slidably inserted into the first insertion grooves 113 and clamped to the housing 110, so as to allow the movable door 120 to be smoothly assembled at the first interface 111 of the housing 110.

[0069] Figure 5 is an exploded schematic view of a movable door. Please refer to Figures 3 to 5The movable door 120 of the present embodiment further comprises a pivot 128 and a torsion spring 123, and the at least one door plate 122 substantially comprises a pair of door plates 122 capable of being opened in opposite directions. The door frame 121 further comprises a pair of side wings 121a extending towards the housing 110 (towards the positive Z-axis direction), and the door plates 122 are connected to the side wings 121a of the door frame 121 through the pivot 128. The torsion spring 123 is sleeved on the pivot 128 and abuts between the door plate 122 and the door frame 121 (the main body of the door frame 121, i.e. the main structure having the opening). The torsion spring 123 constantly drives the door plate 122 to close on the door frame 121 (i.e. to close on the main body of the door frame 121 to close the opening). During the process of inserting the fiber connector 200 into the fiber adapter 100, the fiber connector 200 pushes open the door plate 122 and deforms the torsion spring 123 (to open the opening). Conversely, when the fiber connector 200 is pulled out of the fiber adapter 100, the elastic force accumulated by the deformation of the torsion spring 123 drives the door plate 122 to reset and restore to the state that the door plate 122 closes on the door frame 121, as shown in Figure 2

[0070] As shown in Figure 1 The fiber adapter 100 of the present embodiment further comprises a dust cap 130 which is detachably inserted into the housing 110 to close the second interface 112. Here, the dust cap 130 is only used as a contrast to the movable door 120, that is, for the first interface 111 which needs to be plugged in and pulled out from time to time, the arrangement of the movable door 120 as described above can simultaneously achieve dustproof and use convenience, and for the second interface 112 which does not need to be plugged in and pulled out frequently, for example, is arranged inside the equipment, the dust cap 130 can be used as a protective measure before the manufacturing is completed but not yet used. In another embodiment not shown, the second interface 112 can also be provided with the same movable door 120 as the first interface 111. In other words, the movable door 120 can effectively overcome the inconvenience of the dust cap 130.

[0071] Please refer to Figures 3 to 5 ​In the present embodiment, in order to improve the structural strength of the assembled door 120 and the housing 110, the housing 110 further has a plurality of first fixing portions 115, and the door 120 further has a plurality of second fixing portions 126 at the top and bottom of the door frame 121, so that when the first fixing portions 115 and the second fixing portions 126 are buckled to each other, the door frame 121 can be fixed with the housing 110. Here, one of the first fixing portions 115 and the second fixing portions 126 includes a fixing hole, and the other of the first fixing portions 115 and the second fixing portions 126 includes a fixing block, so that when the aforementioned buckling is achieved, the fixing block falls into the fixing hole to achieve structural interference with each other. Further, the first fixing portion 115 has a first guide slope 115a and a fixing hole 115b, and they are arranged with the first guide slope 115a on the outside and the fixing hole 115b on the inside, and the second fixing portion 126 has a second guide slope 126a and a fixing block 126b, and they are arranged with the second guide slope 126a on the outside and the fixing block 126b on the inside. Accordingly, during the process of assembling the door 120 into the housing 110, the first guide slope 115a and the second guide slope 126a first slide against each other and then separate, and then the fixing block 126b falls into the fixing hole 115b to achieve the aforementioned structural interference, that is, the first fixing portion 115 and the second fixing portion 126 are in each other's assembly path, and the first guide slope 115a and the second guide slope 126a are located at the beginning of the respective assembly paths, and the fixing hole 115b and the fixing block 126b are located at the end of the respective assembly paths.

[0072] As shown in Figures 3 to 5 For the physical structure of the housing 110, a pair of first insertion grooves 113 are connected to the first interface 111 and located on opposite sides of the first interface 111, that is, the first insertion grooves 113 are considered to be located on opposite sides of the first interface 111 along the Y-axis. Further, the first tenon 124 slides along the Z-axis in the first insertion groove 113, and the first interface 111 is considered to be located on the X-Y plane (or considered to be located on a plane parallel to the X-Y plane), and the first insertion groove 113 and the first tenon 124 are stepped along the Z-axis to fit each other. The aforementioned whether the first tenon 124 is buckled in the positioning notch 113a located at the closed end of the first insertion groove 113, or the first fixing portion 115 and the second fixing portion 126 are buckled to each other, is used to prevent the door 120 from falling off the housing 110.

[0073] On the other hand, the housing 110 further comprises a plurality of second dowels 114, which are respectively adjacent to the first insertion slots 113 and extend from the inner wall of the housing 110. Correspondingly, the movable door 120 further comprises a plurality of second insertion slots 127, which are adjacent to the first dowels 124, and when the aforementioned first dowels 124 are inserted into the first insertion slots 113, the second dowels 114 are also respectively inserted into the second insertion slots 127 correspondingly, so that the first dowels 124, the first insertion slots 113, the second dowels 114 and the second insertion slots 127 become a structure of mutual engagement.

[0074] Figure 6 With Figure 7 respectively show the partial cross-sectional view of the movable door from different perspectives. Figure 8 is the partial cross-sectional view of the movable door and the housing after assembly. Please refer to Figures 5 to 7 first, so as to clearly understand the characteristics of the aforementioned structure of mutual engagement by comparing the partial structure of the door frame 121 with the overall structure. In this embodiment, for the door frame 121, the first dowel 124 is the partial structure of the side wing 121a, and the two second insertion slots 127 are located on the opposite sides of the first dowel 124 along the X-axis. Accordingly, please compare Figure 8 When the door frame 121 is assembled into the housing 110, one of the second dowels 114 inserted into the second insertion slot 127 is equivalent to being supported on one side of the first dowel 124, so when viewed from Figure 6 or Figure 7 the structural characteristics of the "half" door frame 121 shown in Figure 5 are restored to the structural characteristics of the "complete" door frame 121 shown in

[0075] It should be noted that the movable door 120 further comprises a pair of third dowels 125, which extend from the door frame 121, and the third dowels 125 and the first dowels 124 are located on the opposite sides of the door frame 121 along the Z-axis and extend away from each other, so as to Figure 4 for example, the first dowel 124 extends in the positive Z-axis direction, and the third dowel 125 extends in the negative Z-axis direction. When the fiber optic connector 200 is inserted into the fiber optic adapter 100, the third dowel 125 is buckled on the fiber optic connector 200 to fix the fiber optic connector 200 inside the housing 110. As can be seen from Figures 6 to 8 , the first dowel 124 and the third dowel 125 belong to the same elastic arm structure 125a, that is, with the side wing 121a of the door frame 121 as the reference, the first dowel 124 extends to one side, the third dowel 125 extends to the other side through the first dowel 124, and the first dowel 124 is connected between the side wing 121a and the third dowel 125. At the same time, the elastic arm structure 125a above and below along the X-axis is the second insertion slot 127 respectively.

[0076] Figure 9 With Figure 10 are cross-sectional views of the fiber adapter at different levels of detail. Figure 11 A partial enlarged view of the housing is shown. Please refer to Figures 9 to 11 Further to the foregoing spring arm structure 125a, the second clasp 114 of the present embodiment is an L-shaped cantilever structure having a first arm portion 114a and a second arm portion 114b. The first arm portion 114a extends along the Y-axis from the inner wall of the housing 110 toward the interior space, then turns (in the negative Z-axis direction) toward the movable door 120 to form the second arm portion 114b. Accordingly, the upper edge and the lower edge of the spring arm structure 125a abut against the second arm portion 114b, respectively, and a gap exists between the spring arm structure 125a and the side wing 121a. Figure 9 and Figure 10 the structural features at different levels of cross-sectioning can be understood in relation to the structural relationship. As shown in Figure 9 , the cross-sectioning position on the Z-axis is closer to the door panel 122, so that the upper edge and the lower edge of the spring arm structure 125a are seen to abut against the second arm portion 114b, respectively, and a gap exists between the spring arm structure 125a and the side wing 121a. As shown in Figure 10 , the cross-sectioning position on the Z-axis is far away from the door panel 122 and tends to the interior space of the housing 110, so that the first clasp 124 extending from the side wing 121a is seen to be substantially clamped by the first arm portion 114a. Based on the foregoing, the first clasp 124, the first insertion slot 113, the second clasp 114, and the second insertion slot 127 are in a mutual fitting relationship, so that the door frame 121 of the movable door 120 is stably assembled in the housing 110.

[0077] Please refer to Figure 2 , Figure 4 and Figure 11 In the present embodiment, the fiber connector 200 has the joint 220 and the convex rib 210 thereon, the fiber connector 300 has the joint 320 and the convex rib 310 thereunder, and correspondingly, the housing 110 of the fiber adapter 100 also has the limiting grooves 116a, 116b. Figure 12 is Figure 2 a cross-sectional view of the fiber connector group entering the fiber adapter. Please refer to Figure 12 The extending direction of the limiting grooves 116a, 116 of the present embodiment is parallel to the central axis CX of the fiber adapter 100 (which is equivalent to being parallel to the foregoing Z-axis), so that the limiting groove 116a can be embedded and limited by the convex rib 210, and the limiting groove 116b can be embedded and limited by the convex rib 310. Furthermore, the convex ribs 210, 310 of the present embodiment are arranged in an upper and lower configuration with respect to the central axis CX, so that the limiting grooves 116a, 116b are also arranged in an upper and lower configuration as shown. In addition, as shown in Figure 12As shown in the partial enlarged view, the side view profiles of the fiber connectors 200, 300 at the joints 220, 320 of the present embodiment are in a state of being symmetrically opposite to each other. That is, with the central axis CX as a reference, the vertical surface 221 and the inclined surface 222 of the joint 220 are arranged in an upper-lower configuration, while the vertical surface 321 and the inclined surface 322 of the joint 320 are arranged in a lower-upper configuration, and the central axis CX substantially passes through the inclined surfaces 221, 321.

[0078] Figure 13 is a cross-sectional view of the fiber adapter and the fiber connector of another embodiment of the present application after being mated. Referring to Figure 13 , the fiber connectors 500, 600 are respectively assembled into the housing 410 of the fiber adapter, and different from the foregoing embodiment, the protruding ribs 510, 610 of the fiber connectors 500, 600 are located on the same side (both below the central axis CX) relative to the central axis CX, and accordingly, the limiting groove 416 of the housing 410 is located below the central axis CX and is an integral structure, that is, the limiting groove 416 is simultaneously adapted and used for embedding and limiting the protruding ribs 510, 610. Furthermore, the side view profiles of the fiber connectors 500, 600 at the joints thereof of the present embodiment are two planes that are in contact with each other. Here, whether the fiber connectors 200, 300, 500, 600 of the present embodiment or the foregoing embodiment, the user can conveniently perform the related plugging operation through the cooperation of the protruding ribs 210, 310, 510, 610 and the limiting grooves 116a, 116b, 416.

[0079] In summary, in the foregoing embodiments of the present application, the fiber adapter is provided with the first insertion groove at at least one interface of the housing, and the movable door is assembled at the foregoing interface, so that the first clamping tongue of the movable door is slidably inserted into the first insertion groove and clamped to the housing. At the same time, the second clamping tongue of the housing is also inserted into the second insertion groove of the door frame during the foregoing insertion process, and the first clamping tongue, the first insertion groove, the second clamping tongue, and the second insertion groove are combined through the mutual embedding relationship to complete the combination between the side wings of the door frame and the side walls of the housing. In addition, the main body of the door frame and the top plate and the bottom plate corresponding to the housing can also be combined through the first fixing part and the second fixing part, so as to improve the combination strength of the movable door and the housing.

[0080] In this way, the fiber adapter can be provided with the movable door at the interface, the movable door can be closed when the interface is not used, and the fiber connector can push open the movable door to enter the internal space of the fiber adapter when the interface is used. Accordingly, the movable door provides a simple and convenient interface opening and closing structure, so that the interface can meet the needs of use and non-use. In short, the interface of the fiber adapter can be provided with the movable door according to the use needs, so as to meet the needs of shielding, dust prevention, and improving use convenience, etc.

Claims

1. A fiber optic adapter, comprising: : A housing having two interfaces opposite to each other, the housing having at least a pair of first insertion slots adjacent to at least one of the two interfaces; and at least a movable door assembled to at least one of the two interfaces, the movable door comprising a door frame and at least a door panel, the door panel being pivotally connected to the door frame, the door frame having a pair of first clamping tabs respectively slidably inserted into a pair of the first insertion slots and clamped to the housing.

2. The fiber optic adapter of claim 1, wherein The two interfaces are a first interface and a second interface, and a pair of the first insertion slots are communicated with the first interface and located at opposite sides of the first interface.

3. The fiber optic adapter of claim 1, wherein The first clamping tab slides in the first insertion slot along an axial direction, and the axial direction is orthogonal to a plane where the interface is located.

4. The fiber optic adapter of claim 1, wherein The first clamping tab slides in the first insertion slot along an axial direction, and the first insertion slot and the first clamping tab are stepped in profile along the axial direction to be adapted to each other.

5. The fiber optic adapter of claim 1, wherein The housing further comprises a plurality of second clamping tabs respectively adjacent to a pair of the first insertion slots and extended from an inner wall of the housing, and the movable door further comprises a plurality of second insertion slots adjacent to the first clamping tab, each of the second clamping tabs being correspondingly inserted into each of the second insertion slots.

6. The fiber optic adapter of claim 5, wherein The door frame has two side wings opposite to each other and respectively extended towards the housing, and the first clamping tab is a partial structure of the side wing, and two of the second insertion slots are located at opposite sides of the first clamping tab so that the first clamping tab is clamped by two of the second clamping tabs.

7. The fiber optic adapter of claim 5, wherein The second clamping tab has a first arm portion and a second arm portion in a cantilever structure of L shape, and the first arm portion is extended from the inner wall of the housing towards an inner space and then turned to extend towards the movable door to form the second arm portion.

8. The fiber optic adapter of claim 1, wherein The movable door further comprises a pair of third clamping tabs extended from the door frame, and the third clamping tabs and the first clamping tab are located at opposite sides of the door frame and extend away from each other, and the third clamping tabs are buckled to the fiber connector when the fiber connector is inserted into the fiber adapter.

9. The fiber optic adapter of claim 8, wherein The first clamping tab and the third clamping tab belong to the same spring arm structure.

10. The fiber optic adapter of claim 8, wherein The door frame has two side wings opposite to each other and respectively extended towards the housing, and the first clamping tab is a partial structure of the side wing, and the first clamping tab is connected between the side wing and the third clamping tab.

11. The fiber optic adapter of claim 1, wherein The door frame further has a plurality of second fixing portions, and the housing further has a plurality of first fixing portions, so that the door frame is fixed to the housing when the first fixing portions and the second fixing portions are buckled to each other, one of the first fixing portions and the second fixing portions comprises a fixing hole, and the other of the first fixing portions and the second fixing portions comprises a fixing block, so that the fixing block falls into the fixing hole to interfere with each other when buckled to each other.

12. The fiber optic adapter of claim 11, wherein The first fixing portion has a first guide inclined surface and the fixing hole, and the second fixing portion has a second guide inclined surface and the fixing block, and the first guide inclined surface and the second guide inclined surface are slidably connected and separated from each other during the process that the movable door is assembled into the housing, and then the fixing block falls into the fixing hole.

13. The fiber optic adapter of claim 1, wherein :Further comprising a dust cap, which is detachably plugged into the shell to seal one of the two interfaces.

14. The fiber optic adapter of claim 1, wherein : The movable door further comprises a pivot and a torsion spring, the door plate is connected to the door frame through the pivot, the torsion spring is sleeved on the pivot and abuts between the door plate and the door frame, the torsion spring constantly drives the door plate to close the door frame, when the fiber connector is inserted into the adapter, the fiber connector pushes the door plate to deform the torsion spring.

15. The fiber optic adapter of claim 1, wherein : The shell further has at least one limiting groove to fit and limit the convex rib of at least one fiber connector, the extending direction of the limiting groove is consistent with the plugging direction of the fiber connector relative to the shell.

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