Optical fiber connector and connector assembly

Abstract

The utility model relates to an optical fiber connector and a connector assembly, the optical fiber connector comprises a connector housing and an optical fiber contact element, the optical fiber contact element is a multi-core optical fiber contact element, and the multi-core optical fiber contact element is provided with two positioning holes or two guide pins used for being in butt joint with another adaptive optical fiber connector. The guide pins extend to the plug-in end of the connector shell, at least one row of optical fiber holes are formed between the two positioning holes or the two guide pins, the arrangement direction of the row of optical fiber holes is defined as the first direction, and the direction shown by the connecting line of the two positioning holes or the connecting line of the two guide pins is defined as the second direction. The connector assembly comprises a plug connector and a socket connector which are matched with each other, and the plug connector and the socket connector are the optical fiber connector. According to the utility model, the ceramic pins and the ceramic bushings are replaced in situ, so that the length of the connector is effectively reduced, the transmission of multiple paths of optical signals is realized, and the transmission capability of the connector is improved.

Description

Technical Field

[0001] The utility model belongs to the field of connectors, and in particular relates to an optical fiber connector and a connector component. Background Art

[0002] like Figure 1 As shown, currently FC connectors generally use two ceramic pins 1 clamped by a ceramic sleeve 2 to realize the transmission of optical signals. The length of the ceramic sleeve is 11.4 mm. In order to ensure the clamping length and clamping force of the ceramic pin 1, the connector length is relatively long. Moreover, it is difficult to arrange multi-core optical fibers on the ceramic pin 1. Therefore, the FC connector using the ceramic pin 1 can only transmit a single optical signal. Utility Model Content

[0003] The purpose of the utility model is to provide an optical fiber connector and a connector assembly, which eliminates the traditional FC connector's two-end ceramic pins connected by a ceramic sleeve, and adopts a structural form of in-situ replacement of the ceramic pins and the ceramic sleeve, thereby effectively reducing the length of the connector, while realizing the transmission of multiple optical signals, and improving the transmission capacity of the connector.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a fiber optic connector, comprising a connector housing and a fiber optic contact, wherein the fiber optic contact is a multi-core fiber optic contact, and the multi-core fiber optic contact is provided with two positioning holes or two guide pins for docking with another matching fiber optic connector, the guide pins extending to the mating end of the connector housing, and at least one row of fiber optic holes is provided between the two positioning holes or the two guide pins, and the arrangement direction of a row of fiber optic holes is defined as a first direction, and the direction indicated by the line connecting the two positioning holes or the line connecting the two guide pins is defined as a second direction.

[0005] The beneficial effect is that the utility model adopts a multi-core optical fiber contact with multiple optical fiber holes to replace the ceramic pin and the ceramic sleeve in situ, effectively reducing the length of the optical fiber connector, while realizing the transmission of multiple optical signals, and improving the transmission capacity of the optical fiber connector. The arrangement direction of the optical fiber holes is different from the arrangement direction of the positioning holes or guide pins, which can make full use of the space of the optical fiber contact, arrange more optical fiber holes, and further improve the transmission capacity of the optical fiber connector.

[0006] The multi-core optical fiber contact has the following embodiments.

[0007] In a first implementation manner, when two positioning holes are provided on the multi-core optical fiber contact, the two positioning holes are through holes or blind holes.

[0008] The beneficial effect is that both the through hole and the blind hole can be plugged into the guide pin on another matching optical fiber connector to play a role in positioning the optical fiber hole.

[0009] In a second embodiment, when two guide pins are provided on the multi-core optical fiber contact, the two guide pins are embedded in the multi-core optical fiber contact, and the ends of the two guide pins exposed from the multi-core optical fiber contact extend toward the mating end of the connector housing.

[0010] The beneficial effect is that the multi-core optical fiber contact piece and the guide pin are designed as an integrated unit, the guide pin is embedded in the multi-core optical fiber contact piece, and can be integrally formed with the multi-core optical fiber contact piece.

[0011] In a third embodiment, when two guide pins are provided on the multi-core optical fiber contact, the two guide pins are provided on a positioning seat, and the positioning seat is installed on the multi-core optical fiber contact so that the two guide pins pass through the guide pin holes on the multi-core optical fiber contact.

[0012] The beneficial effect is that the guide pin and the multi-core fiber optic contact are designed as separate parts. The guide pin hole of the multi-core fiber optic contact can be used for the guide pin of the positioning seat to pass through, and can also be used as a positioning hole in conjunction with the guide pin on another adapter connector, so there is no need to distinguish the multi-core fiber optic contact during assembly.

[0013] As a further optimization of the third embodiment, a through groove is provided on the positioning seat, and the through groove is connected to the optical fiber hole of the multi-core optical fiber contact piece.

[0014] The beneficial effect is that the through-slot design can facilitate the optical fiber to pass through the through-slot and enter the optical fiber hole.

[0015] Furthermore, the multi-core optical fiber contact comprises a coaxial large-diameter cylindrical section and a small-diameter cylindrical section, and symmetrically arranged anti-rotation planes are provided on the cylindrical surface of the small-diameter cylindrical section, and the two anti-rotation planes are located in the second direction.

[0016] Its beneficial effects are: the anti-rotation plane fits with the inner wall of the connector shell, preventing the multi-core optical fiber contact from rotating and avoiding torsional damage to the optical fiber; the position where the large-diameter cylindrical section and the small-diameter cylindrical section meet can form an annular stop surface, which abuts against the connector shell to prevent the multi-core optical fiber contact from falling out.

[0017] Furthermore, a spring is arranged in the connector housing, one end of the spring presses against the connector housing, and the other end presses against the end face of the large diameter cylindrical segment to ensure that the annular stop surface formed by the joint position of the large diameter cylindrical segment and the small diameter cylindrical segment can press against the connector housing.

[0018] The beneficial effect is that the elastic force of the spring can also ensure that after the two optical fiber connectors are butt-jointed, the multi-core optical fiber contact pieces can reliably contact each other, thereby ensuring reliable and stable signal transmission between the optical fibers.

[0019] The plug-in end of the connector housing is provided with a housing guide surface.

[0020] The beneficial effect is that the guide surface of the shell serves as a primary guide structure for the plugging of the two adapted optical fiber connectors, guides the plugging of the two adapted optical fiber connectors, and improves the accuracy of the plugging.

[0021] Furthermore, the shell guide surface is an annular inclined surface, which is a continuous inclined surface extending in the circumferential direction, or is formed by a plurality of inclined surfaces distributed at intervals in the circumferential direction.

[0022] The beneficial effect is that a variety of structural forms of the shell guide surface are provided, which is convenient for implementers to choose according to actual needs.

[0023] When a guide pin is arranged on the multi-core optical fiber contact piece, a guide pin guiding surface is arranged at the end of the guide pin.

[0024] The beneficial effect is that when two matching optical fiber connectors are plugged in, the guide pin guide surface can guide the guide pin to be quickly aligned and plugged in with the positioning hole, further ensuring the accuracy of the plugging in.

[0025] Furthermore, the guide surface of the guide pin is a spherical surface or a conical surface.

[0026] The beneficial effect is that a variety of structural forms of the guide pin guide surface are provided, which is convenient for implementers to choose according to actual needs.

[0027] A key or a keyway is provided on the connector housing at a position for docking with the adapting optical fiber connector.

[0028] The beneficial effect is that the cooperation between the key and the key slot can prevent the two matched optical fiber connectors from rotating relative to each other after being plugged in, thereby ensuring that the internal optical fiber does not twist.

[0029] The optical fiber connector is a plug connector or a socket connector.

[0030] The utility model also provides a connector assembly, comprising a plug connector and a socket connector that are mated with each other, wherein the plug connector and the socket connector are both the optical fiber connectors described above.

[0031] The multi-core optical fiber contact piece of the plug connector and the multi-core optical fiber contact piece of the socket connector achieve the positioning docking of the optical fiber holes through the insertion of the guide pins and the positioning holes.

[0032] The plug connector and the socket connector are prevented from rotating by the cooperation of the provided key and keyway.

[0033] The beneficial effects of the utility model are as follows: the utility model redesigns the optical fiber contact parts, cancels the alignment method of the ceramic pins at both ends of the original FC connector product being tightly connected through the ceramic sleeve, and changes it to the cooperation of the guide pin and the positioning hole. The adjusted matching form does not need to consider the clamping force and clamping length of the ceramic sleeve, which not only effectively reduces the matching length, but also realizes the transmission of multiple optical signals, thereby improving the transmission capacity of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of an FC connector in the prior art;

[0035] Figure 2 This is a schematic diagram of the structure of the connector assembly of the utility model;

[0036] Figure 3 It is a schematic structural diagram of a multi-core optical fiber contact located in a plug connector in the utility model;

[0037] Figure 4 It is a schematic diagram of the assembly process of the multi-core optical fiber contact piece and the positioning seat located in the socket connector of the utility model;

[0038] Figure 5 It is a schematic diagram of the combination of the multi-core optical fiber contact piece and the positioning seat in the utility model;

[0039] Figure 6 It is a schematic diagram of the structure of the plug connector in the utility model;

[0040] Figure 7 This is a schematic diagram of the structure of the socket connector in the utility model;

[0041] Figure 8 This is a schematic diagram of the assembly process of the plug connector and the socket connector in the utility model;

[0042] Markings in the figure: 1. Ceramic pin, 2. Ceramic sleeve, 3. Plug connector, 4. Socket connector, 5. Multi-core optical fiber contact, 6. Positioning seat, 7. Seat body, 8. Guide pin, 9. Through groove, 10. Large diameter cylindrical section, 11. Small diameter cylindrical section, 12. Anti-rotation plane, 13-1. Positioning hole, 13-2. Guide pin hole, 14. Optical fiber hole, 15. Plug housing, 16. Spring, 17. Locking nut, 18. Step surface, 19. Key, 20. Socket housing, 21. Guide pin guide surface, 22. Socket housing guide surface, 23. Socket housing opposite plug end, 24. Keyway. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.

[0044] Example 1: Refer to the attached Figure 2 As shown, a connector assembly includes a plug connector 3 and a socket connector 4, a positioning seat 6 and a multi-core fiber optic contact 5 are arranged in the socket connector 4, and another multi-core fiber optic contact 5 is arranged in the plug connector 3, wherein the multi-core fiber optic contact 5 located in the socket connector 4 is installed on the positioning seat 6.

[0045] The multi-core optical fiber contact members 5 in the plug connector 3 and the socket connector 4 are both insulating plastic members, and have the same main structure.

[0046] In the plug connector 3, the structure of the multi-core optical fiber contact 5 is as follows: Figure 3 As shown, it includes a coaxial and integrally formed large-diameter cylindrical section 10 and a small-diameter cylindrical section 11, the outer diameter of the small-diameter cylindrical section 11 is smaller than the outer diameter of the large-diameter cylindrical section 10, and a symmetrically arranged anti-rotation plane 12 is cut on the cylindrical surface of the small-diameter cylindrical section 11, and the anti-rotation plane 12 cooperates with the plug housing 15 to prevent the multi-core optical fiber contact 5 from rotating. Two axially extending and oppositely arranged positioning holes 13-1 are also provided on the multi-core optical fiber contact 5, and two rows of optical fiber holes 14 are provided between the two positioning holes 13-1, each row includes a plurality of optical fiber holes 14, and the total number of the two rows of optical fiber holes 14 is the same as the number of optical fibers. The positioning hole 13-1 is a through hole or a blind hole.

[0047] In the socket connector 4, the structure of the multi-core optical fiber contact 5 is as follows: Figure 4 As shown, it includes a coaxial and integrally formed large-diameter cylindrical section 10 and a small-diameter cylindrical section 11, the outer diameter of the large-diameter cylindrical section 10 is equal to the outer diameter of the seat body 7 of the positioning seat 6, the outer diameter of the small-diameter cylindrical section 11 is smaller than the outer diameter of the large-diameter cylindrical section 10, and a symmetrically arranged anti-rotation plane 12 is cut on the cylindrical surface of the small-diameter cylindrical section 11, and the anti-rotation plane 12 is matched with the socket housing 20 to prevent the multi-core optical fiber contact 5 from rotating. Two axially extending and oppositely arranged guide pin holes 13-2 are also provided on the multi-core optical fiber contact 5, and the guide pin holes 13-2 are through holes. Two rows of optical fiber holes 14 are provided between the two guide pin holes 13-2, each row includes a plurality of optical fiber holes 14, and the total number of the two rows of optical fiber holes 14 is the same as the number of optical fibers.

[0048] The positioning seat 6 in the socket connector 4 is used in combination with the multi-core optical fiber contact 5. Figure 4 As shown, the positioning seat 6 comprises a seat body 7 and two guide pins 8 installed at the same end of the seat body 7. The two guide pins 8 are arranged in parallel. A through groove 9 is provided on the seat body 7 between the two guide pins 8 so that the multi-core optical fiber can pass through the through groove 9. The assembly process of the positioning seat 6 and the multi-core optical fiber contact member 5 is as follows: Figure 4As shown, the guide pin 8 of the positioning seat 6 is inserted into the guide pin hole 13-2 from the end face of the large diameter cylindrical section 10 of the multi-core optical fiber contact 5, and extends from the end face of the small diameter cylindrical section 11, as shown in FIG. Figure 5 After assembly, the multi-core optical fibers pass through the through grooves 9 and then enter the optical fiber holes 14 one by one.

[0049] On the multi-core optical fiber contact 5 in the plug connector 3 and the socket connector 4, the arrangement direction of each row of optical fiber holes 14 is defined as the first direction, and the direction indicated by the connecting line of the two positioning holes 13-1 or the two guide pin holes 13-2 is the second direction. The first direction intersects with the second direction and is preferably perpendicular, that is, Figure 3 , 4 As shown, the two positioning holes 13-1 are located above and below the two rows of optical fiber holes 14, and the two guide pin holes 13-2 are located above and below the two rows of optical fiber holes.

[0050] Preferably, the anti-rotation plane 12 on the multi-core optical fiber contact 5 is located in the second direction and extends forward and backward.

[0051] like Figure 6 As shown, in the plug connector 3, the end face of the large diameter cylindrical section 10 of the multi-core optical fiber contact 5 abuts against the spring 16 in the plug housing 15, so that the multi-core optical fiber contact 5 can float elastically in the plug housing 15. The anti-rotation plane 12 on the multi-core optical fiber contact 5 is in contact with the inner wall of the plug housing 15, which can prevent the multi-core optical fiber contact 5 from rotating on the one hand, and can also guide the elastic floating of the multi-core optical fiber contact 5 on the other hand.

[0052] like Figure 7 As shown, in the socket connector 4, the multi-core optical fiber contact 5 and the positioning seat 6 are assembled and installed in the socket housing 20, and the end of the positioning seat 6 opposite to the multi-core optical fiber contact 5 abuts against the spring 16 in the socket housing 20, so that the multi-core optical fiber contact 5 and the positioning seat 6 can float elastically in the socket housing 20. The anti-rotation plane 12 on the multi-core optical fiber contact 5 is in contact with the inner wall of the socket housing 20, which can prevent the multi-core optical fiber contact 5 from rotating on the one hand, and can also guide the elastic floating of the multi-core optical fiber contact 5 on the other hand.

[0053] The position where the large-diameter cylindrical section 10 and the small-diameter cylindrical section 11 on the multi-core optical fiber contact 5 meet can form an annular stop surface, which abuts against the plug housing 15 or the socket housing 20, thereby compressing and pre-tightening the spring 16 and preventing the elastic force of the spring 16 from pushing out the multi-core optical fiber contact 5.

[0054] After the multi-core optical fiber contact 5 and the positioning seat 6 are assembled in the socket housing 20, the ends of the two guide pins 8 are located in the socket housing plug-in end 23, and the socket housing guide surface 22 is arranged at the edge of the socket housing plug-in end 23 as a primary guide for the plug-in of the head seat; the ends of the guide pins 8 are provided with guide pin guide surfaces 21 as a secondary guide for the plug-in of the head seat. The outer surface of the plug-in end of the plug housing 15 is also provided with a step surface 18, and when the socket connector 4 and the plug connector 3 are plugged in place, the end surface of the socket housing plug-in end 23 abuts against the step surface 18.

[0055] When the plug connector 3 and the socket connector 4 are plugged together, the guide surface 22 of the socket shell first contacts the front end of the plug shell 15 to guide the socket shell 20 to be plugged into the plug shell 15; then the guide pin 8 contacts the positioning hole 13-1 of the multi-core optical fiber contact 5 in the plug 3 to guide the docking of the two multi-core optical fiber contacts 5 to ensure that the optical fiber holes 14 on the two multi-core optical fiber contacts 5 are docked one by one.

[0056] Preferably, the socket housing guide surface 22 is an annular inclined surface arranged inside the end of the socket housing opposite to the plug end 23, and the annular inclined surface is a continuous inclined surface extending along the circumferential direction, or is surrounded by a plurality of inclined surfaces spaced apart along the circumferential direction. The guide pin guide surface 21 is a spherical surface or a conical surface.

[0057] As a variation, the annular inclined surface may be provided at the end of the plug housing 15 to form a plug housing guide surface, which serves as a primary guide for the plugging of the header.

[0058] A locking nut 17 is provided on the outside of the plug housing 15, and an external thread that cooperates with the locking nut 17 is provided on the socket housing 20. During the plugging process of the head seat, the locking nut 17 pulls the plug 3 toward the socket 4, and realizes the locking connection between the plug connector 3 and the socket connector 4.

[0059] A space for inserting the socket housing 20 is formed between the locking nut 17 and the plug housing 15, and the step surface 18 is arranged in the space. A key 19 is also arranged on the plug housing 15 in the space, which is used to cooperate with the key slot 24 of the plug end 23 of the socket housing. On the one hand, it is a guide for the plugging of the head seat to ensure that the guide pins 8 and the positioning holes in the plug 3 and the socket 4 can be aligned. On the other hand, it can prevent the relative rotation of the plug connector 3 and the socket connector 4 after the head seat is plugged in, so as to avoid the twisting of the optical fiber and damage.

[0060] In this embodiment, each row of optical fiber holes includes 6 optical fiber holes. After the plug connector 3 and the socket connector 4 are matched, parallel transmission of 12 optical signals can be realized. Compared with the single-core transmission of the traditional FC optical fiber connector, the signal transmission capacity is increased by 12 times.

[0061] The following is combined with Figure 8, the plugging process of the plug connector 3 and the socket connector 4 in this embodiment is described.

[0062] like Figure 8 As shown in (a), when the plug connector 3 and the socket connector 4 are plugged together, the two guide pins 8 are aligned with the positioning holes 13-1 of the multi-core optical fiber contact 5 in the plug connector 3, and the socket housing guide surface 22 on the socket housing 20 first contacts the plugging end of the plug housing 15 to guide the socket housing 20 to plug into the plug housing 15;

[0063] like Figure 8 As shown in (b), as the insertion process proceeds, the guide pin guide surface 21 at the end of the guide pin 8 contacts the positioning hole 13-1 on the multi-core optical fiber contact 5 in the plug connector 3, guiding the docking of the two multi-core optical fiber contacts 5 in the plug connector 3 and the socket connector 4, and the multi-core optical fiber contact 5 pre-presses the spring 16 during the docking process;

[0064] like Figure 8 As shown in (c), by rotating the locking nut 17 on the outside of the plug housing 15, the locking nut 17 cooperates with the external thread on the plug end 23 of the socket housing to realize the plug-in connection and locking of the plug connector 3 and the socket connector 4. At this time, the end face of the plug end 23 of the socket housing abuts against the step surface 18 between the plug housing 15 and the locking nut, the end faces of the two multi-core optical fiber contacts 5 are in contact, the optical fibers in the optical fiber holes 14 are correspondingly connected, and the elastic force of the spring 16 ensures the reliable contact of the two multi-core optical fiber contacts 5.

[0065] Embodiment 2: This embodiment is an adjustment based on Embodiment 1. A positioning seat 6 and a multi-core optical fiber contact 5 with a guide pin hole 13-2 are provided in the plug housing 15, and only a multi-core optical fiber contact 5 with a positioning hole 13-1 is provided in the socket housing 20. Other structures are the same as those in Embodiment 1.

[0066] Embodiment 3: This embodiment is an adjustment based on Embodiment 1. The positioning seat 6 on the socket connector 4 and the connected multi-core optical fiber contact 5 are an integrated structure, that is, the guide pins 8 are directly set on the multi-core optical fiber contact 5. For example, when the multi-core optical fiber contact 5 is formed, two guide pins 8 are buried in the multi-core optical fiber contact 5, and the ends of the guide pins 8 are exposed so as to be plugged with the positioning holes 13-1 of the multi-core optical fiber contact 5 on the plug connector 3. Other structures not described in detail are the same as those in Embodiment 1.

[0067] In other implementations of this embodiment, a multi-core optical fiber contact with guide pins may also be provided on the plug connector.

[0068] Embodiment 4: A fiber optic connector, which is the plug connector 3 in the above embodiment, and its structure is not described in detail here.

[0069] Embodiment 5: A fiber optic connector, which is the socket connector 4 in the above embodiment, and its structure is not described in detail here.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can be modified or replaced by equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. An optical fiber connector, comprising a connector housing and an optical fiber contact, characterized in that: The optical fiber contact piece is a multi-core optical fiber contact piece (5), and the multi-core optical fiber contact piece (5) is provided with two positioning holes (13-1) or two guide pins (8) for docking with another matching optical fiber connector, the guide pins (8) extend to the mating end of the connector housing, and at least one row of optical fiber holes (14) is provided between the two positioning holes (13-1) or the two guide pins (8), and the arrangement direction of the row of optical fiber holes (14) is defined as a first direction, and the direction indicated by the connection line of the two positioning holes (13-1) or the connection line of the two guide pins (8) is defined as a second direction.

2. The optical fiber connector according to claim 1, characterized in that: When two positioning holes (13-1) are provided on the multi-core optical fiber contact piece (5), the two positioning holes (13-1) are through holes or blind holes.

3. The optical fiber connector according to claim 1, characterized in that: When two guide pins (8) are provided on the multi-core optical fiber contact piece (5), the two guide pins (8) are buried in the multi-core optical fiber contact piece (5), and the ends of the two guide pins (8) exposed from the multi-core optical fiber contact piece (5) extend toward the mating end of the connector housing.

4. The optical fiber connector according to claim 1, characterized in that: When two guide pins (8) are provided on the multi-core optical fiber contact piece (5), the two guide pins (8) are fixed on the positioning seat (6), and the positioning seat (6) is installed on the multi-core optical fiber contact piece (5) so that the two guide pins (8) pass through the guide pin holes (13-2) on the multi-core optical fiber contact piece (5).

5. The optical fiber connector according to claim 1, characterized in that: The positioning seat (6) is provided with a through groove (9), and the through groove (9) is connected to the optical fiber hole (14) of the multi-core optical fiber contact piece (5).

6. The optical fiber connector according to claim 1, characterized in that: The multi-core optical fiber contact piece (5) comprises a coaxial large-diameter cylindrical section (10) and a small-diameter cylindrical section (11), and symmetrically arranged anti-rotation planes (12) are provided on the cylindrical surface of the small-diameter cylindrical section (11), and the two anti-rotation planes (12) are located in the second direction.

7. The optical fiber connector according to claim 6, characterized in that: A spring (16) is arranged in the connector housing, one end of the spring (16) presses against the connector housing, and the other end presses against the end surface of the large diameter cylindrical section (10), so as to ensure that an annular stop surface formed by the joint of the large diameter cylindrical section (10) and the small diameter cylindrical section (11) can press against the connector housing.

8. The optical fiber connector according to claim 1, characterized in that: The plug-in end of the connector housing is provided with a housing guide surface.

9. The optical fiber connector according to claim 8, characterized in that: The shell guide surface is an annular inclined surface, which is a continuous inclined surface extending in the circumferential direction, or is formed by a plurality of inclined surfaces distributed at intervals in the circumferential direction.

10. The optical fiber connector according to claim 1, characterized in that: A guide pin guiding surface (21) is provided at the end of the guide pin (8).

11. The optical fiber connector according to claim 10, characterized in that: The guide pin guiding surface (21) is a spherical surface or a conical surface.

12. The optical fiber connector according to claim 1, characterized in that: A key (19) or a key slot (24) is provided at a position on the connector housing for docking with the adapting optical fiber connector.

13. The optical fiber connector according to any one of claims 1 to 12, characterized in that: The optical fiber connector is a plug connector (3) or a socket connector (4).

14. A connector assembly, comprising a plug connector (3) and a socket connector (4) that are matable with each other, characterized in that: The plug connector (3) and the socket connector (4) are both optical fiber connectors as claimed in claim 13.

15. The connector assembly according to claim 14, characterized in that: The multi-core optical fiber contact piece (5) of the plug connector (3) and the multi-core optical fiber contact piece (5) of the socket connector (4) are positioned and docked with the optical fiber hole (14) by means of the butt insertion of the guide pin (8) and the positioning hole (13-1).

16. The connector assembly according to claim 14, characterized in that: The plug connector (3) and the socket connector (4) are prevented from rotating by the cooperation of the key (19) and the key slot (24).

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