Fiber Optic Adapter

Abstract

The optical fiber adapter relates to the field of optical communications and comprises a housing (2) having a chamber (21) including a first chamber (221) and a second chamber (222) that communicate with each other and with two opposite ends of the housing (2), and a holding member (4) formed integrally with the housing (2) and provided within the first chamber (221), the holding member (4) having a first opening (421) located at one end, a second opening (422) located at the other end, and a third opening (43) extending along the length of the holding member (4). The optical fiber adapter includes a retaining member (4) surrounded to form a cavity (41), a retaining cover plate (5) used to detachably connect to the retaining member (4) to seal the third opening (43), and a ceramic sleeve (3) disposed within the receiving cavity (41) and adjacent to the retaining cover plate (5), the ceramic sleeve (3) having a third chamber (33) communicating with the first opening (421) and the second opening (422), the ceramic sleeve (3) being confined within the receiving cavity (41). The retaining member (4) has a one-piece structure and improves the collimation performance of the optical fiber adapter.

Description

[Technical field]

[0001] TECHNICAL FIELD The present disclosure relates to the technical field of optical communication devices, and more particularly to optical fiber adapters.

[0002] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure claims priority to Chinese Patent Application No. 202010591832.0, filed on June 24, 2020, the disclosure of which is incorporated herein by reference in its entirety. [Background technology]

[0003] The optical fiber adapter is an optical fiber movable connector, also known as an optical passive device, which realizes movable connections between optical fibers, and has the functions of movable connections between optical fibers and optical fibers, between optical fibers and active devices, between optical fibers and other passive devices, and between optical fibers and equipment.

[0004] The related optical fiber adapter includes a housing, a sleeve holding member and a ceramic sleeve, the sleeve holding member is provided in the housing, the ceramic sleeve is provided in the sleeve holding member, and a through hole is provided for accommodating the optical fiber. The optical fiber includes a first optical fiber and a second optical fiber. The first optical fiber and the second optical fiber are inserted into corresponding through holes at both ends of the ceramic sleeve for docking, and the ceramic sleeve provides an adjustment space by its free floating so that the first optical fiber and the second optical fiber can be coaxially docked, thereby ensuring that the light beam in the first optical fiber is parallel to the light beam in the second optical fiber, and the optical fiber adapter has good alignment performance. Note that collimation refers to keeping the light beam of the first optical fiber and the light beam of the second optical fiber parallel.

[0005] The associated sleeve holding member is divided into a first sleeve holding member and a second sleeve holding member. One end of the ceramic sleeve is placed in the through hole of the first sleeve holding member, and the other end of the ceramic sleeve is placed in the through hole of the second sleeve holding member. The first sleeve holding member and the second sleeve holding member are coaxially aligned and assembled to realize the coaxial docking of the through holes. Due to the existence of errors in the assembly process, the sleeve holding members are not completely coaxial during the actual alignment assembly, and the ceramic sleeve cannot freely float in the through hole of the sleeve holding member, which affects the collimation performance of the optical fiber adapter. Summary of the Invention

[0006] The embodiments of the present disclosure provide an optical fiber adapter to solve the technical problem of how to improve the collimation performance of the optical fiber adapter.

[0007] To achieve the above objectives, the technical solutions of the present disclosure are realized as follows:

[0008] An embodiment of the present disclosure includes a housing with a chamber, the chambers including a first chamber and a second chamber communicating with each other and with two opposite ends of the housing, respectively; a retaining member integrally formed with the housing and disposed within the first chamber, the retaining member being surrounded to form a receiving cavity, the receiving cavity having a first opening located at one end of the retaining member, a second opening located at the other end of the retaining member, and a third opening extending along a length of the retaining member; and a retaining cover plate adapted to be removably connected to the retaining member to seal the third opening. and a ceramic sleeve disposed within the receiving cavity and adjacent the retaining cover plate, the ceramic sleeve having a third chamber in communication with the first opening and the second opening and confined within the receiving cavity.

[0009] Furthermore, the third opening includes a long side including a first long side and a second long side that are both parallel to the longitudinal extension direction of the holding member, and a short side that is perpendicular to the long sides and includes a first short side connected to one end of the first long side and one end of the second long side, and a second short side connected to the other end of the first long side and the other end of the second long side.

[0010] Furthermore, the lengths of the first long side and the second long side are both greater than the length of the ceramic sleeve.

[0011] Furthermore, the distance between the first long side and the second long side is greater than the outer diameter of the ceramic sleeve.

[0012] Furthermore, the optical fiber adapter further includes a first block member formed integrally with the housing and located at one end of the holding member, and a second block member located at the other end of the holding member, the first block member having a first through hole communicating with the first opening, and the second block member having a second through hole communicating with the second opening.

[0013] Furthermore, the openings of the first through hole and the second through hole are both smaller than the outer diameter of the ceramic sleeve.

[0014] Furthermore, the length of the retaining cover plate is the same as the length of the long side.

[0015] Further, the retaining cover plate has opposing outer and inner surfaces, the inner surface of the retaining cover plate is used to seal the third opening, and the outer surface of the retaining cover plate smoothly transitions with the outer surface of the retaining member.

[0016] Additionally, the fiber optic adapter further includes a handle disposed on the outer surface of the retaining cover plate and fixedly connected to the retaining cover plate.

[0017] Additionally, the handle and the retaining cover plate are both disposed adjacent to the housing within the chamber of the housing.

[0018] Furthermore, the retaining member is integrally formed with the housing, the retaining member penetrates a first chamber, and the retaining member is surrounded to form a storage cavity, the storage cavity having a first opening located at one end of the retaining member, a second opening located at the other end of the retaining member, and a third opening extending along the longitudinal extension direction of the retaining member, and the first opening, the second opening, and the third opening are all connected to the storage cavity.

[0019] The optical fiber adapter provided by the present disclosure includes a housing, a retaining member, a retaining cover plate, and a ceramic sleeve, the retaining member is surrounded to form a receiving cavity used to place the ceramic sleeve, the cavity has a first opening, a second opening, and a third opening, and the retaining cover plate is detachably connected to the retaining member to seal the third opening. By providing a third opening in the longitudinal extension direction of the retaining member, the ceramic sleeve may be placed in the receiving cavity formed by the surrounded retaining member through the third opening, and the retaining cover plate may seal the third opening and be detachably connected to the retaining member. The retaining member is of a one-piece structure, and the retaining member is formed integrally with the housing. The axis of the retaining member is an axis of a one-piece structure itself, which prevents the problem of multiple retaining members not being coaxial due to assembly errors, and ensures that the ceramic sleeve can float freely within the retaining member. As a result, when optical fibers are inserted into both ends of the ceramic sleeve and docked, coaxial docking between the optical fibers is guaranteed, and the alignment performance of the optical fiber adapter is good. [Brief description of the drawings]

[0020] In order to more clearly describe the technical solutions in the embodiments of the present disclosure or the prior art, the drawings required in the description of the embodiments of the present disclosure or the prior art are briefly introduced below.

[0021] [Figure 1] 1 is a schematic diagram of the working principle of a related optical fiber adapter;

[0022] [Diagram 2] 1 is a schematic exploded view of a fiber optic adapter according to one embodiment of the present disclosure.

[0023] [Diagram 3] 1 is a schematic cross-sectional view of a housing of a fiber optic adapter according to one embodiment of the present disclosure.

[0024] [Figure 4] FIG. 2 is a schematic rear view of a fiber optic adapter according to one embodiment of the present disclosure.

[0025] [Figure 5a] 1 is a schematic structural diagram of a housing of an optical fiber adapter according to an embodiment of the present disclosure.

[0026] [Figure 5b] 1 is a schematic structural diagram of a housing of another optical fiber adapter according to an embodiment of the present disclosure.

[0027] [Figure 5c] 1 is a schematic structural diagram of a housing of another optical fiber adapter according to an embodiment of the present disclosure.

[0028] [Figure 6] 1 is a schematic cross-sectional view of a housing and a retaining member of a fiber optic adapter according to one embodiment of the present disclosure.

[0029] [Figure 7] 1 is a schematic structural diagram of a holding member of an optical fiber adapter according to an embodiment of the present disclosure.

[0030] [Figure 8] 1 is a schematic structural diagram of a sleeve holding member of a related optical fiber adapter.

[0031] [Figure 9] 1 is a schematic structural diagram of a sleeve retaining member and a retaining cover plate of an optical fiber adapter according to an embodiment of the present disclosure.

[0032] [Figure 10] 1 is a schematic cross-sectional view of a fiber optic adapter according to an embodiment of the present disclosure.

[0033] [Figure 11] 1 is a schematic structural diagram of a holding member of an optical fiber adapter according to an embodiment of the present disclosure.

[0034] [Figure 12] 1 is a schematic top view of a retaining member of a fiber optic adapter according to an embodiment of the present disclosure.

[0035] [Figure 13] 13 is a schematic cross-sectional view taken along the AA direction of the optical fiber adapter shown in FIG. 12.

[0036] [Figure 14a] 2 is a schematic structural diagram of a block member of the optical fiber adapter. FIG.

[0037] [Figure 14b] 13 is a schematic structural diagram of a block member of another optical fiber adapter. FIG.

[0038] [Figure 15] 1 is a schematic cross-sectional view of a sleeve retaining member and a retaining cover plate of a fiber optic adapter according to one embodiment of the present disclosure.

[0039] [Figure 16] FIG. 16 is a schematic cross-sectional view taken along the DD direction of FIG.

[0040] [Figure 17] 1 is a schematic cross-sectional view of a fiber optic adapter according to an embodiment of the present disclosure.

[0041] [Figure 18] 1 is a three-dimensional schematic structural diagram of an optical fiber adapter according to an embodiment of the present disclosure. [Explanation of symbols]

[0042] 1 Sleeve holding member 11 First Cavity 121 First Entrance 122 Second Entrance 131 first sleeve holding member 1311 First Containment Cavity 132 second sleeve holding member 1321 Secondary Containment Cavity 2. Housing 21 Chamber 22 Chamber 221 First Chamber 222 Second Chamber 3 Ceramic sleeve 31 Second Cavity 321 Third Entrance 322 Fourth Entrance 33 Third Chamber 4 Retaining member 41 Storage Cavity 421 First Opening 422 Second Opening 43 Third Opening 431 Long side 4311 First long side 4312 Second long side 432 Third Short Side 4321 1st short side 4322 Second short side 5 Retaining cover plate 6 Block members 61 First block member 611 First through hole 62 Second block member 621 Second Through Hole 7 Handle DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in more detail in combination with drawings and embodiments. It should be understood that the specific embodiments described herein are not intended to limit the present disclosure, but are merely used to illustrate the present disclosure.

[0044] Each specific technical feature described in a specific embodiment may be combined in any suitable manner without inconsistency, for example, different specific technical features may be combined to form different embodiments and technical solutions. In order to avoid unnecessary repetition, various possible combinations of each specific technical feature in the present disclosure are not described separately.

[0045] In the following description, the terms "first / second / ..." merely distinguish between different objects and do not indicate a similarity or connection between the objects. It should be understood that both the "upper" and "lower" directional descriptions are orientations in normal usage.

[0046] It should be noted that the terms "comprise," "comprising," or other variations are intended to cover a non-exclusive inclusiveness such that a process, method, article, or apparatus that includes a set of elements includes not only those elements but also other elements not expressly listed or that are inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprises..." does not exclude the presence of another of the same element in the process, method, article, or apparatus that includes that element.

[0047] The optical fiber adapter provided in the embodiments of the present disclosure is primarily used in optical passive devices that provide movable connections between equipment, between equipment and devices, between equipment and optical fibers (or optical cables), and between optical fibers (or optical cables) and optical fibers (or optical cables) in optical communication systems.

[0048] Although an example of application to a connector of an optical fiber adapter is used, it should be noted that the type of application scene of the present disclosure is not limited to the present disclosure. The operation principle of the optical fiber adapter is illustrated in combination with FIG. 1. The optical fiber adapter may include a sleeve holding member 1, a housing 2, and a ceramic sleeve 3. The housing 2 may be of a substantially cubic structure, where one end of the housing 2 is an open end, and thus the housing 2 forms a chamber 21 through the enclosure. A through hole is provided on the end face of the other end opposite to the open end, and the area of ​​the through hole is much smaller than the area of ​​the end face. The sleeve holding member 1 is inserted into the chamber of the housing 2 through the through hole, and along the length extension direction of the sleeve holding member 1, one end of the sleeve holding member 1 is located in the chamber, and the other end opposite to the sleeve holding member 1 protrudes from the outer surface of the housing 2. The sleeve holding member 1 may be of a substantially cylindrical structure, and the sleeve holding member 1 has a first cavity 11 penetrating therethrough. The sleeve holding member 1 has a first inlet 121 at one end and a second inlet 122 at the other opposite end. The first inlet 121 and the second inlet 122 are both connected to the first cavity 11. The first cavity 11 is used to place the ceramic sleeve 3. The ceramic sleeve 3 has a second cavity 31. The ceramic sleeve 3 has a third inlet 321 at one end and a fourth inlet 322 at the other opposite end. The third inlet 321 and the fourth inlet 322 are both connected to the second cavity 31, and the first cavity 31 is used to place the ceramic ferrule. A standard connector is inserted into the chamber 21 from the open end of the housing 2 and connected to the end of the sleeve holding member 1 close to the first inlet 121. A ceramic pin of the standard connector is inserted into the first inlet 121, and an optical fiber core in the ceramic pin is inserted into the ceramic ferrule. The miniature connector is accessed from the opposite end of the housing 2 to the open end and is connected to one end of the sleeve retaining member 1 proximate the second inlet 122 .The ceramic pin of the miniature connector is inserted into the second inlet 121, and the optical fiber core in the ceramic pin is inserted into the ceramic ferrule and then connected to the optical fiber core of the standard connector. The optical fiber adapter is connected to the optical fiber core between the standard connector and the miniature connector through the sleeve holding member 1, the housing 2, the ceramic sleeve 3 and other assemblies, realizing the docking and transmission of the optical path.

[0049] In an embodiment of the present disclosure, as shown in FIG. 2 and FIG. 3, the fiber optic adapter includes a housing 2, a ceramic sleeve 3, a retaining member 4, and a retaining cover plate 5, wherein: The housing 2 has a chamber 22, which includes a first chamber 221 and a second cavity 222, which communicate with each other and with two opposite ends of the housing 2, respectively. In detail, as shown in FIG. 4, the housing 2 may be a thin-walled structure of a substantially cubic shape, with one end of the housing 2 being an open end for inserting the holding member 4, and the other end face opposite to the open end and the four side faces of the housing 2 forming the second chamber 222 through an enclosure for receiving the interface end of a standard connector. As shown in FIG. 3, the first chamber 221 communicates with the second chamber 222, and the first chamber 221 is used to place the holding member 4. Alternatively, as shown in FIG. 5a, the first chamber 221 may be provided in the connection area of ​​the end face of the housing 2 and the lower side of the housing 2. As shown in FIG. 5b, the first chamber 221 may be provided in the connection area of ​​the end face of the housing 2 and the left (right) side of the housing 2. As shown in Fig. 5c, the first chamber 221 may be provided at the connection area of ​​the end surface of the housing 2 and the upper side surface of the housing 2. Preferably, in one embodiment of the present disclosure, the first chamber 221 uses the structure shown in Fig. 5a for the following description. From the first chamber 221 to the second chamber 222, the chamber volumes increase to form the chamber 22 together.

[0050] As shown in FIG. 6 and FIG. 7, the optical fiber adapter further includes a holding member 4 integrally formed with the housing 2 and provided in the first chamber 221, where the holding member 4 is surrounded to form a receiving cavity 41, and the receiving cavity 41 has a first opening 421 located at one end, a second opening 422 located at the other end, and a third opening 43 extending along the length extension direction of the holding member 4. In particular, since the holding member 4 and the housing 2 are an integrally formed structure, it can prevent the problem of having to weld or join the assembled structure, and can also prevent the non-coaxial problem caused by the distortion of the holding member 4 during the assembly process. The holding member 4 may be inserted into the second chamber 222 along the first chamber 221, and one end of the holding member 4 may be connected to a standard connector terminal inserted into the second chamber 222, and the other end of the holding member 4 is connected to a miniature connector terminal outside the housing 2. The setting form of the holding member 4 is flexible and diverse. For example, the retaining member 4 may be completely disposed in the chamber 22, or the retaining member 4 may be partially disposed in the second chamber 222, and the other part may protrude from the housing 2. It should be noted that the relative positional relationship between the retaining member 4 and the housing 2 is not a limitation of the present disclosure. In an exemplary embodiment, a setting mode as shown in FIG. 6 may be used. That is, a part of the retaining member 4 is disposed inside the housing 2, and the other part is disposed outside the housing 2. As shown in FIG. 7, the retaining member 4 may be a substantially cylindrical barrel having one side and two opposing end faces, and the space formed through the enclosure of the side face and the two end faces of the barrel is just the receiving cavity 41. Along the longitudinal extension direction of the barrel, a third opening 43 is provided on the side face of the barrel as an entrance for disposing the ceramic sleeve 3, and the third opening 43 may be provided at any position on the side face of the barrel along the circumferential direction of the barrel. Accordingly, a first opening 421 and a second opening 422 are provided on both end faces of the barrel, respectively, so that the ceramic pins of the connectors located at both ends of the retaining member 4 extend into the receiving cavity 41.The retaining member 4 is an integrally formed structure, and the ceramic sleeve 3 is inserted into and positioned in the receiving cavity 41 of the retaining member 4 through the third opening 43 in the radial direction of the retaining member 4. The central axis of the barrel is exactly the axis of the retaining member 4, and there is only one such axis. The ceramic sleeve 3 may be coaxial with the retaining member 4, or the ceramic sleeve 3 may be free floating in the retaining member 4. As shown in FIG. 8, the associated sleeve retaining members include a first sleeve retaining member 131 and a second sleeve retaining member 132. The first sleeve retaining member 131 has a first receiving cavity 1311, and the second sleeve retaining member 132 has a second receiving cavity 1321. One end of the ceramic sleeve 3 is inserted into the first receiving cavity 1311, and the other opposite end of the ceramic sleeve 3 is inserted into the second receiving cavity 1321. The first receiving cavity 1311 and the second receiving cavity 1321 together form a space for arranging the ceramic sleeve 3. The first sleeve holding member 131 and the second sleeve holding member 132 are connected by coaxial alignment assembly to form a sleeve holding member. Due to a certain error in the actual assembly process, the axis of the first sleeve holding member 131 and the axis of the second sleeve holding member 132 are not on the same straight line, and the cavity formed by the first receiving cavity 1311 and the second receiving cavity 1321 is distorted to a certain extent. As a result, the ceramic sleeve cannot float freely in the receiving cavity, and when the first optical fiber and the second optical fiber are inserted and docked into the corresponding through holes at both ends of the ceramic sleeve 3, the first optical fiber and the second optical fiber cannot be docked coaxially, thereby affecting the collimation performance of the optical fiber adapter. Meanwhile, the holding member 4 of the embodiment of the present disclosure provides a space in which the ceramic sleeve can be arranged. On the other hand, the holding member 4 is an integral structure and is formed integrally with the housing 2, and the axis of the holding member 4 is the axis of the aforementioned integral structure itself, which prevents the problem of multiple sleeve holding members not being coaxial with each other due to assembly errors, thereby maintaining the floating property of the ceramic sleeve and improving the collimation performance of the optical fiber adapter.

[0051] As shown in FIG. 9, the optical fiber adapter further includes a retaining cover plate 5 used to be detachably connected to the holding member 4 that seals the third opening 43. In detail, the ceramic sleeve is placed in the receiving cavity of the holding member 4 through the third opening 43, one side of the ceramic sleeve close to the third opening 43 is exposed, and the retaining cover plate 5 substantially covers the third opening 43 of the holding member 4 to shield and protect the exposed part of the ceramic sleeve. The retaining cover plate 5 is connected to the holding member 4 to prevent the ceramic sleeve from falling off through the third opening 43 of the holding member 4. The structural size of the retaining cover plate 5 is adapted to the size of the third opening 43, so that a good fit between the retaining cover plate 5 and the third opening 43 is ensured, and the retaining cover plate 5 and the holding member 4 are not connected to each other in a fixed manner, so that the ceramic sleeve can be easily inserted and removed.

[0052] As shown in FIG. 10, the optical fiber adapter further includes a ceramic sleeve 3 disposed in the receiving cavity 41 and adjacent to the retaining cover plate 5, the ceramic sleeve 3 having a third chamber 33 communicating with the first opening 421 and the second opening 422. In addition, the ceramic sleeve 3 is restricted in the receiving cavity 41. Note that the ceramic sleeve is restricted in the receiving cavity 41 means that the ceramic sleeve 3 can float to some extent in the receiving cavity 41 due to a gap between the ceramic sleeve 3 and the retaining member 4. However, the ceramic sleeve 3 cannot move beyond the receiving cavity 41. The ceramic pins of the connectors connected to both ends of the retaining member 4 are inserted into the first opening 421 and the second opening 422 correspondingly, and the optical fiber cores in the ceramic pins are inserted into the ceramic ferrules in the third chamber 33.

[0053] The holding member 4 of the embodiment of the present disclosure is integrally formed with the housing 2, and a third opening 43 is provided in the length direction of the holding member 4. Through the third opening 43, the ceramic sleeve 3 may be disposed in the receiving cavity 41 formed by the enclosure of the holding member 4, and the holding cover plate 5 may be removably connected to the holding member 4, sealing the third opening 43. Since the holding member 4 is an integral structure that does not require coaxial alignment assembly, problems in collimation performance caused by multiple holding members being non-coaxial are eliminated.

[0054] 11, the third opening 43 includes a long side 431 and a short side 432, where the long side 431 includes a first long side 4311 and a second long side 4312, both of which are parallel to the length extension direction of the holding member 4, and the short side 432 is perpendicular to the long side 431, and includes a first short side 4321 connected to one end of the first long side 4311 and one end of the second long side 4312, and a second short side 4322 connected to the other end of the first long side 4311 and the other end of the second long side 4312. In particular, the ceramic sleeve 3 may have a substantially cylindrical structure, and the diameter of the ceramic sleeve 3 from one end to the other opposite end along the length extension direction of the ceramic sleeve 3 is substantially the same. The first long side 4311 and the second long side 4312 of the third opening 43 are both parallel to the axis of the holding member 4, i.e., the distance between the first long side 4311 and the second long side 4312 is constant, so that the ceramic sleeve 3 is conveniently positioned in the accommodating cavity of the holding member 4 through the third opening 43.

[0055] 12 , the length L1 of the first long side 4311 and the second long side 4312 are both greater than the length L2 of the ceramic sleeve 3. In particular, the length of the first long side 4311 and the second long side 4312 are both L1, which is greater than the length L2 of the ceramic sleeve 3, so that the ceramic sleeve 3 can be placed in the accommodating cavity in the length direction of the third opening 43 of the retaining member 4.

[0056] 12, the distance L3 between the first long side 4311 and the second long side 4312 is greater than the outer diameter L4 of the ceramic sleeve 3. In particular, since L3 is greater than L4, the ceramic sleeve 3 can be disposed within the accommodating cavity in the width direction of the third opening 43 of the retaining member 4.

[0057] In some embodiments, as shown in FIG. 13, the optical fiber adapter further includes a block member 6 formed integrally with the housing 2 and including a first block member 61 located at one end of the holding member 4 and a second block member 62 located at the other end of the holding member 4, where the first block member 61 has a first through hole 611 communicating with the first opening 421, and the second block member 62 has a second through hole 621 communicating with the second opening 422. In detail, as described above, the ceramic sleeve 3 cannot move beyond the receiving cavity 41, and the block members 6 may be provided at both ends of the holding member 4 in the length extension direction of the holding member 4 to restrict the movement of the ceramic sleeve 3 and prevent the ceramic sleeve 3 from sliding out from both ends of the holding member 4. The block member 6 and the holding member 4 are of an integral structure, and the shape of the block member 6 is arbitrary. For example, the shape of the block member 6 may be a cylindrical circular structure as shown in Fig. 14a, or a rounded circular structure as shown in Fig. 14b. The block member 6 is provided in a substantially central region with through holes including a first through hole 611 and a second through hole 621 for inserting ceramic pins of a connector.

[0058] 13, the openings of the first through hole 611 and the second through hole 621 are both smaller than the outer diameter of the ceramic sleeve 3. In particular, the openings of the first through hole 611 and the second through hole 621 may be the same or different, and the smallest size openings of the first through hole 611 and the second through hole 621 must be smaller than the outer diameter of the ceramic sleeve 3, which can prevent the ceramic sleeve 3 from sliding out along the axial direction of the retaining member 4.

[0059] 15 , the length of the retaining cover plate 5 is the same as the length of the long side 431. In particular, the retaining cover plate 5 substantially covers the third opening 43 of the retaining member 4, so that the retaining cover plate 5 can maintain a better fit with the retaining member 4 while providing shielding and protection for the ceramic sleeve 3.

[0060] 16, the retaining cover plate 5 has an outer surface and an inner surface facing each other, the inner surface of the retaining cover plate 5 is used to seal the third opening 43, and the outer surface of the retaining cover plate 5 smoothly transitions with the outer surface of the retaining member. In particular, in consideration of process adaptability and appearance, the retaining cover plate 5 may be an arc-shaped cover plate, and may form a complete cylindrical structure with the retaining member 4 after being connected with the retaining member 4.

[0061] 15 , the optical fiber adapter further includes a handle 7, which is provided on an outer surface of the retaining cover plate 5 and is fixedly connected to the retaining cover plate 5. In particular, the handle 7 is provided to make the retaining cover plate 5 more convenient to assemble or disassemble with the retaining member 4.

[0062] 17 and 18, the handle 7 and the retaining cover plate 5 are both provided adjacent to the housing 2 within the chamber 22. In particular, the handle 7 and the retaining cover plate 5 may be provided within the first chamber 221 along with the retaining member 4, and the housing 2 may provide a certain clamping effect on the handle 7, such that the handle 7 is clamped and fixed to the housing 2.

[0063] The above are merely preferred embodiments of the present disclosure, and are not intended to limit the protection scope of the present disclosure.

Claims

1. a housing provided with a chamber, the chambers including a first chamber and a second chamber communicating with each other and with two opposite ends of the housing, the first chamber extending to an end face of the housing and a side face of the housing; a retaining member integrally formed with the housing and disposed within the first chamber, the retaining member being enclosed to define a receiving cavity, the receiving cavity having a first opening at one end of the retaining member, a second opening at the other end of the retaining member, and a third opening extending along a length of the retaining member; a retaining cover plate adapted to be removably connected to the retaining member to seal the third opening; a handle disposed on an outer surface of the retaining cover plate and fixedly connected to the retaining cover plate, the handle being disposed within the first chamber and adjacent an end surface of the housing; a ceramic sleeve disposed within the receiving cavity and adjacent the retaining cover plate, the ceramic sleeve having a third chamber communicating with the first opening and the second opening and confined within the receiving cavity; 1. A fiber optic adapter comprising:

2. the third opening includes a long side and a short side; The long sides include a first long side and a second long side, both of which are parallel to a length extension direction of the holding member; 2. The optical fiber adapter according to claim 1, wherein the short sides are perpendicular to the long sides and include a first short side connected to one end of the first long side and one end of the second long side, and a second short side connected to the other end of the first long side and the other end of the second long side.

3. 3. The optical fiber adapter according to claim 2, wherein the lengths of the first long side and the second long side are both greater than the length of the ceramic sleeve.

4. 3. The fiber optic adapter of claim 2, wherein a distance between the first long side and the second long side is greater than an outer diameter of the ceramic sleeve.

5. the optical fiber adapter further comprises a first block member formed integrally with the housing and located at the one end of the holding member, and a second block member located at the other end of the holding member; 2. The optical fiber adapter according to claim 1, wherein the first block member has a first through hole communicating with the first opening, and the second block member has a second through hole communicating with the second opening.

6. 6. The optical fiber adapter according to claim 5, wherein the openings of the first through hole and the second through hole are both smaller than an outer diameter of the ceramic sleeve.

7. 3. The fiber optic adapter of claim 2, wherein the length of the retaining cover plate is the same as the length of the long side.

8. The retaining cover plate has an inner surface opposite the outer surface, 2. The fiber optic adapter of claim 1, wherein the inner surface of the retaining cover plate is used to seal the third opening, and the outer surface of the retaining cover plate smoothly transitions with the outer surface of the retaining member.

9. 2. The fiber optic adapter of claim 1, wherein said handle and said retaining cover plate are both disposed adjacent to said housing within said chamber of said housing.

10. the retaining member is integrally formed with the housing, the retaining member extends through the first chamber; 2. The optical fiber adapter of claim 1, wherein the retaining member is surrounded to form a receiving cavity, the retaining member having a first opening located at the one end, a second opening located at the other end, and a third opening extending along the length of the retaining member, the first opening, the second opening, and the third opening all communicating with the receiving cavity.

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