Optical fiber connector and connector assembly

Abstract

The utility model discloses an optical fiber connector and a connector assembly, and relates to the technical field of optical fiber connectors, the optical fiber connector comprises a jack mechanism and a pin mechanism which are matched with each other, the jack mechanism and the pin mechanism respectively comprise a shell and an optical fiber contact element, a positioning pin assembly is arranged between the optical fiber contact piece of the jack mechanism and the optical fiber contact piece of the pin mechanism, and a positioning key assembly used for secondary guide positioning is arranged between the shell of the jack mechanism and the shell of the pin mechanism. The optical fiber connector is provided with the positioning pin assembly and the positioning key assembly, and the positioning pin assembly and the positioning key assembly are used for positioning twice, so that the positioning precision of the optical fiber connector is greatly improved, and high-precision alignment of the optical fiber connector can be realized; the optical fiber connector solves the technical problem that the optical fiber connector in the prior art only adopts a one-time positioning structure in which a guide pin is matched with a positioning hole, so that high-precision alignment of the optical fiber connector is not facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber connector, especially an optical fiber connector and a connector assembly. BACKGROUND

[0002] A Chinese patent with the application publication number CN118502033A discloses an optical fiber connector and a connector assembly. The optical fiber connector includes a connector housing and an optical fiber contact. The optical fiber contact is a multi-core optical fiber contact. The multi-core optical fiber contact is provided with two positioning holes or two guide pins for mating with another compatible optical fiber connector. The guide pins extend to the plug-in end of the connector housing. At least one row of optical fiber holes is arranged 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. The direction indicated by the line connecting the two positioning holes or the line connecting the two guide pins is the second direction. The connector assembly includes a plug connector and a socket connector that are compatible with each other. Both the plug connector and the socket connector are the optical fiber connector described above. The above-mentioned document adopts a structure that replaces the ceramic plug pin and the ceramic sleeve in situ, effectively reducing the length of the connector, simultaneously realizing the transmission of multi-channel optical signals, and improving the transmission capacity of the connector.

[0003] However, the above-mentioned document only adopts a one-time positioning structure of the guide pin cooperating with the positioning hole, which limits the positioning accuracy of the optical fiber connector and is not conducive to achieving high-precision alignment of the optical fiber connector. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the above background art, the utility model provides an optical fiber connector and a connector assembly, which solve the technical problem that the optical fiber connector in the prior art only adopts a one-time positioning structure of the guide pin cooperating with the positioning hole, which is not conducive to achieving high-precision alignment of the optical fiber connector.

[0005] The technical solution of the utility model is as follows: an optical fiber connector includes a plug-in hole mechanism and a plug-in pin mechanism that are compatible with each other. Both the plug-in hole mechanism and the plug-in pin mechanism include a housing and an optical fiber contact. A positioning pin assembly is arranged between the optical fiber contact of the plug-in hole mechanism and the optical fiber contact of the plug-in pin mechanism. A positioning key assembly that can be used for secondary guiding and positioning is arranged between the housing of the plug-in hole mechanism and the housing of the plug-in pin mechanism.

[0006] Preferably, the positioning pin assembly includes a guide pin hole and a guide pin. The guide pin hole is arranged on the optical fiber contact of the plug-in hole mechanism and the optical fiber contact of the plug-in pin mechanism. The guide pin is arranged on the optical fiber contact of the plug-in pin mechanism or the optical fiber contact of the plug-in hole mechanism. The guide pin is inserted into the guide pin hole in correspondence.

[0007] Preferably, the positioning key assembly comprises a positioning key and a positioning key groove, the positioning key is arranged on the shell of the jack mechanism or the shell of the pin mechanism, the positioning key groove is arranged on the shell of the pin mechanism or the shell of the jack mechanism, and the positioning key is inserted into the positioning key groove.

[0008] Preferably, at least two positioning keys are arranged on the shell in the circumferential direction of the shell.

[0009] Preferably, the longitudinal section of the positioning key is arc-shaped, and the longitudinal section of the corresponding positioning key groove is also arc-shaped.

[0010] Preferably, the positioning key is provided with a fixing key, the positioning key groove is provided with a fixing key groove, and the fixing key is inserted into the fixing key groove.

[0011] Preferably, the optical fiber contact piece comprises coaxial first-diameter and second-diameter cylindrical segments, the second-diameter cylindrical segment is provided with symmetrical rotation-stopping planes arranged on the cylindrical surface, the first-diameter and second-diameter cylindrical segments are connected to form an annular stop surface, and the annular stop surface is arranged on the shell.

[0012] Preferably, the optical fiber contact piece is provided with an optical fiber hole, the optical fiber hole is arranged on the first-diameter and second-diameter cylindrical segments, the rotation-stopping planes are provided with glue injection ports, and the optical fiber hole is in communication with the glue injection ports.

[0013] Preferably, the optical fiber contact piece of the pin mechanism or the optical fiber contact piece of the jack mechanism is provided with a positioning seat, one end of the guide pin is arranged on the positioning seat and the other end of the guide pin is arranged on the optical fiber contact piece, the shell is provided with a spring, and one end of the positioning seat, which is away from the annular stop surface, is connected with the spring.

[0014] An optical fiber connector assembly comprises a plug shell, a socket shell and the optical fiber connector, the jack mechanism of the optical fiber connector is arranged on the plug shell, the pin mechanism of the optical fiber connector is arranged on the socket shell, the plug shell and the socket shell are inserted into each other, and the jack mechanism and the pin mechanism are positioned and connected after the plug shell and the socket shell are inserted into each other.

[0015] Preferably, the plug shell and the socket shell are provided with positioning claws, the jack mechanism and the pin mechanism are provided with limiting steps, and the positioning claws are clamped with the limiting steps.

[0016] The optical fiber connector is provided with a positioning pin assembly and a positioning key assembly, the positioning pin assembly and the positioning key assembly are used for positioning twice, the positioning precision of the optical fiber connector is greatly improved, and high-precision alignment of the optical fiber connector can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 The optical fiber connector of the present application is shown in the figure.

[0019] Figure 2 The jack mechanism of the present application is shown in the figure.

[0020] Figure 3 The sectional view of Figure 2 .

[0021] Figure 4 The side view of Figure 2 .

[0022] Figure 5 The exploded view of Figure 2 .

[0023] Figure 6 The optical fiber contact of the present application is shown in the figure.

[0024] Figure 7 The cooperation of the optical fiber contact and the positioning seat of the present application is shown in the figure.

[0025] Figure 8 The connection of the jack mechanism and the optical fiber of the present application is shown in the figure.

[0026] Figure 9 The plug pin mechanism of the present application is shown in the figure.

[0027] Figure 10 The connection of the plug pin mechanism and the optical fiber of the present application is shown in the figure.

[0028] Figure 11 The exploded view of Figure 9 .

[0029] Figure 12 The optical fiber connector assembly of the present application is shown in the figure.

[0030] Figure 13 The enlarged view of C in Figure 12 .

[0031] In the figure, 1 is a plug shell, 2 is a socket shell, 3 is a guide pin hole, 4 is a guide pin, 5 is a positioning key, 6 is a positioning key groove, 7 is a fixing key, 8 is a fixing key groove, 9 is a positioning seat, 10 is a first diameter cylindrical section, 11 is a second diameter cylindrical section, 12 is a rotation-stopping flat surface, 13 is a spring, 14 is an optical fiber hole, 15 is a glue injection port, 16 is a through groove, 17 is a jack shell, 18 is a jack rear sleeve, 19 is a jack crimping sleeve, 20 is a plug pin shell, 21 is a plug pin rear sleeve, 22 is a plug pin crimping sleeve, 23 is a multi-core optical fiber, 24 is a guide pin groove, 25 is a limiting step, and 26 is a positioning claw. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Embodiment 1, an optical fiber connector, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 , Figure 9 , Figure 10 and Figure 11 shown, comprising a jack mechanism and a plug pin mechanism matched with each other, the jack mechanism and the plug pin mechanism both comprise a shell and an optical fiber contact, a positioning pin assembly is arranged between the optical fiber contact of the jack mechanism and the optical fiber contact of the plug pin mechanism, and a positioning key assembly that can be used for secondary guiding and positioning is arranged between the shell of the jack mechanism and the shell of the plug pin mechanism. The positioning pin assembly and the positioning key assembly are arranged on the optical fiber connector, two times of positioning are performed by using the positioning pin assembly and the positioning key assembly, the positioning precision of the optical fiber connector is greatly improved, high-precision alignment of the optical fiber connector can be realized, and the technical problem that the optical fiber connector in the prior art only adopts a positioning structure of a guide pin and a positioning hole for one time of positioning and is not conducive to high-precision alignment of the optical fiber connector is solved. The optical fiber contacts are both insulating plastic parts, and the main structures are the same.

[0034] Embodiment 2, on the basis of embodiment 1, an optical fiber connector, as shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown in the figures, the positioning pin assembly includes a guide pin hole 3 and a guide pin 4, the guide pin hole 3 is arranged on the fiber contact of the plug-in mechanism and the fiber contact of the plug mechanism, and the guide pin 4 is arranged on the fiber contact of the plug-in mechanism or the fiber contact of the plug mechanism. When the guide pin 4 is arranged on the fiber contact of the plug-in mechanism, the corresponding guide pin hole 3 is arranged on the fiber contact of the plug mechanism, and the guide pin 4 of the plug-in mechanism is inserted into the guide pin hole 3 of the plug mechanism to complete the positioning of the plug-in mechanism and the plug mechanism.

[0035] The guide pin 4 is arranged on the fiber contact of the plug-in mechanism or the fiber contact of the plug mechanism. Specifically, whether the guide pin 4 is arranged on the fiber contact of the plug-in mechanism or the fiber contact of the plug mechanism can be selected according to actual needs.

[0036] In example 3, on the basis of example 2, a fiber connector is provided, as shown in Figure 1 , Figure 2 , Figure 4 , Figure 9 , Figure 10 and Figure 11 As shown in the figures, the positioning key assembly includes a positioning key 5 and a positioning key groove 6, the positioning key 5 is arranged on the shell of the plug-in mechanism or the shell of the plug mechanism, and the positioning key groove 6 is arranged on the shell of the plug-in mechanism or the shell of the plug mechanism. The positioning key 5 is inserted into the positioning key groove 6. When the positioning key 5 is arranged on the plug-in shell 20 of the plug-in mechanism, the positioning key groove 6 is arranged on the plug-in shell 17 of the plug-in mechanism, and the positioning key 5 is inserted into the positioning key groove 6 to complete the positioning of the plug-in mechanism and the plug mechanism, which is beneficial to the high-precision alignment of the fiber connector.

[0037] The positioning key 5 is arranged on the shell of the plug-in mechanism or the shell of the plug mechanism. Specifically, whether the positioning key 5 is arranged on the shell of the plug-in mechanism or the shell of the plug mechanism can be selected according to actual needs.

[0038] In example 4, on the basis of example 3, a fiber connector is provided, as shown in Figure 1 , Figure 9 , Figure 10 and Figure 11 At least two positioning keys 5 are arranged on the shell, and the at least two positioning keys 5 are arranged along the circumference of the shell. The arrangement of the at least two positioning keys 5 is for the symmetrical arrangement of the structure, which avoids the need to distinguish the position of the positioning key 5 when the positioning key assembly is inserted. In addition, the arrangement of the at least two positioning keys 5 on the shell avoids the rotation of the positioning key 5 after the positioning key 5 is inserted into the positioning key groove 6.

[0039] In example 5, on the basis of example 4, a fiber connector is provided, as shown in Figure 1 , Figure 9、 Figure 10 and Figure 11 As shown in FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, the longitudinal section of the positioning key 5 is arc-shaped, and the longitudinal section of the corresponding positioning key slot 6 is also arc-shaped. The arc-shaped positioning key 5 can disperse axial force and torque, so that the force is more uniform, thereby reducing stress concentration and avoiding slight deformation or failure caused by stress concentration. Meanwhile, the arc-shaped positioning key 5 can reduce the stress of the slot wall of the key slot 6 while bearing the force.

[0040] In example 6, on the basis of example 5, a fiber connector is provided, as shown in FIGS. 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15. Figure 1 、 Figure 4 、 Figure 9 、 Figure 10 and Figure 11 As shown in FIGS. 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, the positioning key 5 is provided with a fixing key 7, the positioning key slot 6 is provided with a fixing key slot 8, and the fixing key 7 and the fixing key slot 8 are inserted and matched. The setting of the fixing key 7 and the fixing key slot 8 also avoids the situation that the positioning key 5 and the positioning key slot 6 are inserted and matched correspondingly and then rotate. The number of the fixing key 7 provided on the fiber connector of the present application can be set according to actual needs. When one fixing key 7 is provided on the fiber connector of the present application, the fixing key 7 is located on any positioning key 5.

[0041] In example 7, on the basis of example 6, a fiber connector is provided, as shown in FIGS. 7, 8, 9, 10, 11, 12, 13, 14 and 15. Figure 5 、 Figure 6 、 Figure 7 and Figure 11 As shown in FIGS. 7, 8, 9, 10, 11, 12, 13, 14 and 15, the fiber contact comprises coaxial first-diameter cylindrical segments 10 and second-diameter cylindrical segments 11, and symmetrical rotation-stopping planes 12 are arranged on the cylindrical surface of the second-diameter cylindrical segments 11. The position where the first-diameter cylindrical segments 10 and the second-diameter cylindrical segments 11 meet forms an annular stop surface, and the annular stop surface abuts against the shell. The annular stop surface makes the fiber contact be stopped in the shell. The first-diameter cylindrical segments 10 and the second-diameter cylindrical segments 11 are integrally connected, and two guide pin holes 3 extend in the axial direction of the fiber contact and are oppositely arranged. The guide pin hole 3 is a through hole or a blind hole. Preferably, the outer diameter of the first-diameter cylindrical segment 10 is larger than the outer diameter of the second-diameter cylindrical segment 11, and the rotation-stopping planes 12 are symmetrically arranged on the cylindrical surface of the second-diameter cylindrical segment 11.

[0042] In example 8, on the basis of example 7, a fiber connector is provided, as shown in FIGS. 8, 9, 10, 11, 12, 13, 14 and 15. Figure 6 and Figure 7 As shown in FIGS. 8, 9, 10, 11, 12, 13, 14 and 15, the fiber contact is provided with a fiber hole 14, the fiber hole 14 is arranged through the first-diameter cylindrical segment 10 and the second-diameter cylindrical segment 11, the rotation-stopping plane 12 is provided with a glue injection port 15, and the fiber hole 14 and the glue injection port 15 are communicated.

[0043] Two rows of fiber holes 14 are arranged between the two guide pin holes 3, each row includes a plurality of fiber holes 14, the total number of the two rows of fiber holes 14 is the same as the number of the optical fibers, the fiber holes 14 are arranged in the axial direction of the fiber contact, and the fiber holes 14 are through holes or blind holes. Preferably, four fiber holes 14 are arranged between the two guide pin holes 3, and the four fiber holes 14 are arranged in two rows. The optical fibers in the multi-core optical fiber 23 are stripped, and then inserted into the second diameter cylindrical section 11 from the first diameter cylindrical section 10 along the fiber holes 14, and after the multi-core optical fiber 23 is completely inserted, the multi-core optical fiber 23 is fixed and cured by injecting epoxy from the glue injection port 15. The rotation-stopping plane 12 is arranged to cooperate with the shell to avoid rotation of the fiber contact.

[0044] In embodiment 9, on the basis of embodiment 8, a fiber connector is provided, as shown in Figure 3 、 Figure 5 and Figure 8 , a positioning seat 9 is arranged on the fiber contact of the plug-in pin mechanism or the fiber contact of the plug-in hole mechanism; one end of the guide pin 4 is mounted on the positioning seat 9, and the other end extends out of the guide pin hole 3 of the fiber contact, a spring 13 is arranged in the shell, and the end of the positioning seat 9 away from the annular stop surface is connected with the spring 13. The outer diameter of the positioning seat 9 is the same as the outer diameter of the first diameter cylindrical section 10, guide pin grooves 24 for clamping the guide pin 4 are arranged on the positioning seat 9, and the two guide pin grooves 24 are symmetrically and parallelly arranged on the positioning seat 9. After the guide pin 4 is clamped on the two guide pin grooves 24, the two guide pins 4 are arranged in parallel, and a through groove 16 is arranged on the positioning seat 9 between the two guide pins 4, so that the multi-core optical fiber 23 passes through the through groove 16.

[0045] When the fiber contact of the jack mechanism is provided with the positioning seat 9, the jack mechanism specifically comprises a jack shell 17, a fiber contact, the positioning seat 9, a spring 13, a jack rear sleeve 18 and a jack crimp sleeve 19, the fiber contact is inserted along the jack hole on the jack shell 17, the fiber contact is inserted from the tail end of the jack shell 17 towards the head end, the annular stop surface of the fiber contact abuts in the jack shell 17, the guide pin 4 is clamped on the positioning seat 9, the guide pin 4 is inserted along the guide pin hole 3 on the fiber contact so that the fiber contact is installed on the positioning seat 9, the jack rear sleeve 18 is inserted along the tail end of the jack shell 17, the jack rear sleeve 18 is interference fit with the jack shell 17, the spring 13 is installed in the jack shell 17, one end of the spring 13 abuts against the jack rear sleeve 18 and the other end abuts against the positioning seat 9, and the jack rear sleeve 18 is connected with the jack crimp sleeve 19. The multicore optical fiber 23 is inserted into the fiber hole 14 from the center of the spring 13. The positioning key groove 6 and the fixing key groove 8 are arranged on the jack shell 17; the pin mechanism specifically comprises a pin shell 20, a fiber contact, a pin rear sleeve 21 and a pin crimp sleeve 22, the fiber contact is inserted along the jack hole on the pin shell 20, the fiber contact is inserted from the tail end of the pin shell 20 towards the head end, the annular stop surface of the fiber contact abuts in the pin shell 20, the pin rear sleeve 21 is inserted along the tail end of the pin shell 20, the pin rear sleeve 21 is interference fit with the pin shell 20, the pin rear sleeve 21 is connected with the pin crimp sleeve 22, the positioning key 5 is arranged on the pin shell 20 and extends along the axial direction of the pin shell 20, and the fixing key 7 is located on the positioning key 5, one end of the fixing key 7 is integrally connected with the pin shell 20.

[0046] When the fiber contact of the pin mechanism is provided with the positioning seat 9, the pin mechanism specifically comprises a pin shell 20, a fiber contact, the positioning seat 9, a spring 13, a pin rear sleeve 21 and a pin crimp sleeve 22, the fiber contact is inserted along the insertion hole on the pin shell 20, the fiber contact is inserted from the tail end of the pin shell 20 towards the head end, the annular stop surface of the fiber contact abuts in the pin shell 20, the guide pin 4 is clamped on the positioning seat 9, the guide pin 4 is inserted along the guide pin hole 3 on the fiber contact so that the fiber contact is installed on the positioning seat 9, the pin rear sleeve 21 is inserted along the tail end of the pin shell 20, the pin rear sleeve 21 is interference fit with the pin shell 20, the spring 13 is installed in the pin shell 20, one end of the spring 13 abuts against the pin rear sleeve 21 and the other end abuts against the positioning seat 9, the pin rear sleeve 21 is connected with the pin crimp sleeve 22, wherein the positioning key 5 is arranged on the pin shell 20 and extends along the axial direction of the pin shell 20, the fixing key 7 is located on the positioning key 5, one end of the fixing key 7 is integrally connected with the pin shell 20; the insertion hole mechanism specifically comprises an insertion hole shell 17, a fiber contact, an insertion hole rear sleeve 18 and an insertion hole crimp sleeve 19, the fiber contact is inserted along the insertion hole on the insertion hole shell 17, the fiber contact is inserted from the tail end of the insertion hole shell 17 towards the head end, the annular stop surface of the fiber contact abuts in the insertion hole shell 17, the insertion hole rear sleeve 18 is inserted along the tail end of the insertion hole shell 17, the insertion hole rear sleeve 18 is interference fit with the insertion hole shell 17, the insertion hole rear sleeve 18 is connected with the insertion hole crimp sleeve 19. Wherein the positioning key groove 6 and the fixing key groove 8 are arranged on the insertion hole shell 17.

[0047] When the fiber contact of the pin mechanism is provided with the positioning seat 9, the pin mechanism specifically comprises a pin shell 20, a fiber contact, the positioning seat 9, a spring 13, a pin rear sleeve 21 and a pin crimp sleeve 22, the fiber contact is inserted along the insertion hole on the pin shell 20, the fiber contact is inserted from the tail end of the pin shell 20 towards the head end, the annular stop surface of the fiber contact abuts in the pin shell 20, the guide pin 4 is clamped on the positioning seat 9, the guide pin 4 is inserted along the guide pin hole 3 on the fiber contact so that the fiber contact is installed on the positioning seat 9, the pin rear sleeve 21 is inserted along the tail end of the pin shell 20, the pin rear sleeve 21 is interference fit with the pin shell 20, the spring 13 is installed in the pin shell 20, one end of the spring 13 abuts against the pin rear sleeve 21 and the other end abuts against the positioning seat 9, the pin rear sleeve 21 is connected with the pin crimp sleeve 22, wherein the positioning key 5 is arranged on the pin shell 20 and extends along the axial direction of the pin shell 20, the fixing key 7 is located on the positioning key 5, one end of the fixing key 7 is integrally connected with the pin shell 20; the insertion hole mechanism specifically comprises an insertion hole shell 17, a fiber contact, an insertion hole rear sleeve 18 and an insertion hole crimp sleeve 19, the fiber contact is inserted along the insertion hole on the insertion hole shell 17, the fiber contact is inserted from the tail end of the insertion hole shell 17 towards the head end, the annular stop surface of the fiber contact abuts in the insertion hole shell 17, the insertion hole rear sleeve 18 is inserted along the tail end of the insertion hole shell 17, the insertion hole rear sleeve 18 is interference fit with the insertion hole shell 17, the insertion hole rear sleeve 18 is connected with the insertion hole crimp sleeve 19. Wherein the positioning key groove 6 and the fixing key groove 8 are arranged on the insertion hole shell 17.

[0048] The pin mechanism specifically comprises a pin shell 20, a fiber contact, a pin rear sleeve 21 and a pin crimp sleeve 22, the fiber contact is inserted along the insertion hole on the pin shell 20, the fiber contact is inserted from the tail end of the pin shell 20 towards the head end, the annular stop surface of the fiber contact abuts in the pin shell 20, the pin rear sleeve 21 is inserted along the tail end of the pin shell 20, the pin rear sleeve 21 is in interference fit with the pin shell 20, the pin crimp sleeve 22 is connected on the pin rear sleeve 21, wherein the positioning key 5 is arranged on the pin shell 20 and extends in the axial direction of the pin shell 20, the fixing key 7 is located on the positioning key 5, and one end of the fixing key 7 is integrally connected with the pin shell 20.

[0049] In accordance with any one of embodiments 1-6, 8, 9, a fiber connector assembly as shown in Figure 12 and Figure 13 includes a plug housing 1, a socket housing 2 and the above-mentioned fiber connector, the insertion hole mechanism of the fiber connector is arranged on the plug housing 1, the pin mechanism of the fiber connector is arranged on the socket housing 2, the plug housing 1 and the socket housing 2 are inserted and matched, and the insertion hole mechanism and the pin mechanism are positioned and connected when the plug housing 1 and the socket housing 2 are correspondingly inserted. After the plug housing 1 and the socket housing 2 are inserted, the plug housing 1 and the socket housing 2 are correspondingly clamped, and the fiber connector of the insertion hole mechanism and the fiber connector of the pin mechanism are correspondingly connected and conducted.

[0050] The outer diameter of the insertion hole shell 17 on the insertion hole mechanism is A, the outer diameter of the pin shell 20 on the pin mechanism is B, A and B are the same size, and the maximum is 4.6 mm. A 2 mm diameter four-core optical cable is fitted in the 4.6 mm insertion hole shell 17 and pin shell 20, respectively, and four multi-core optical fibers 23 are installed, which maximizes the use of the installation space of the connector and realizes high-density optical signal transmission.

[0051] In accordance with any one of embodiments 1-6, 8, 9, a fiber connector assembly as shown in Figure 12 and Figure 13 The plug housing 1 and the socket housing 2 are both provided with a positioning claw 26, the insertion hole mechanism and the pin mechanism are both provided with a limiting step 25, and the positioning claw 26 is clamped with the limiting step 25. That is, the limiting step 25 is arranged on the insertion hole shell 17 and the pin shell 20, and the insertion hole mechanism and the pin mechanism of the fiber connector are correspondingly fixed in the plug housing 1 and the socket housing 2 by clamping the limiting step 25 with the positioning claw 26. The specific structure of the positioning claw 26 is the existing structure, which is not described here.

[0052] In the implementation of the embodiment, when the jack shell 17 is inserted into the plug shell 1 and the pin shell 20 is inserted into the socket shell 2, the limiting step 25 on the jack shell 17 is clamped and fastened with the positioning claw 26 on the plug shell 1, and the limiting step 25 on the pin shell 20 is clamped and fastened with the positioning claw 26 on the socket shell 2, then the plug shell 1 and the socket shell 2 are correspondingly inserted, and after the insertion, the multi-core optical fiber 23 on the jack shell 17 and the multi-core optical fiber 23 on the pin shell 20 are connected and conducted.

[0053] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fiber optic connector comprising a mating jack mechanism and a plug mechanism, the jack mechanism and the plug mechanism each comprising a housing and a fiber optic contact, the fiber optic connector characterized by: A positioning pin assembly is arranged between the fiber contact of the jack mechanism and the fiber contact of the plug mechanism, and a positioning key assembly for secondary guiding and positioning is arranged between the housing of the jack mechanism and the housing of the plug mechanism.

2. The fiber optic connector of claim 1, characterized by: The positioning pin assembly comprises a guide pin hole (3) and a guide pin (4), the guide pin hole (3) is arranged on the fiber contact of the jack mechanism and the fiber contact of the plug mechanism, and the guide pin (4) is arranged on the fiber contact of the plug mechanism or the fiber contact of the jack mechanism, and the guide pin (4) is inserted into the guide pin hole (3) correspondingly.

3. The fiber optic connector of claim 2, characterized by: The positioning key assembly comprises a positioning key (5) and a positioning key groove (6), the positioning key (5) is arranged on the housing of the jack mechanism or the housing of the plug mechanism, the positioning key groove (6) is arranged on the housing of the plug mechanism or the housing of the jack mechanism, and the positioning key (5) is inserted into the positioning key groove (6) correspondingly.

4. The fiber optic connector of claim 3, characterized by: At least two positioning keys (5) are arranged on the housing, and the at least two positioning keys (5) are arranged along the circumference of the housing.

5. The fiber optic connector of claim 4, characterized by: The longitudinal section of the positioning key (5) is arc-shaped, and the longitudinal section of the corresponding positioning key groove (6) is also arc-shaped.

6. The fiber optic connector of claim 5, characterized by: The positioning key (5) is provided with a fixing key (7), the positioning key groove (6) is provided with a fixing key groove (8), and the fixing key (7) is inserted into the fixing key groove (8) in a matching mode.

7. The fiber optic connector of any one of claims 2-6, characterized by: The fiber contact comprises coaxial first-diameter cylindrical segments (10) and second-diameter cylindrical segments (11), symmetrical rotation-stopping planes (12) are arranged on the cylindrical surface of the second-diameter cylindrical segments (11), the position where the first-diameter cylindrical segments (10) and the second-diameter cylindrical segments (11) meet forms an annular stop surface, and the annular stop surface abuts against the housing.

8. The fiber optic connector of claim 7, characterized by: An optical fiber hole (14) is arranged on the fiber contact and penetrates through the first-diameter cylindrical segments (10) and the second-diameter cylindrical segments (11), an injection port (15) is arranged on the rotation-stopping plane (12), and the optical fiber hole (14) is in communication with the injection port (15).

9. The fiber optic connector of claim 8, characterized by: A positioning seat (9) is arranged on the fiber contact of the plug mechanism or the fiber contact of the jack mechanism, one end of the guide pin (4) is mounted on the positioning seat (9), the other end of the guide pin (4) extends along the guide pin hole (3) of the fiber contact, a spring (13) is arranged in the housing, and one end of the positioning seat (9) away from the annular stop surface is connected with the spring (13).

10. A fiber optic connector assembly, comprising: The optical fiber connector comprises a plug housing (1), a socket housing (2) and the optical fiber connector of any one of claims 1-6, 8 and 9, the jack mechanism of the optical fiber connector is arranged on the plug housing (1), the plug mechanism of the optical fiber connector is arranged on the socket housing (2), the plug housing (1) and the socket housing (2) are inserted into each other in a matching mode, and the jack mechanism and the plug mechanism are positioned and connected after the plug housing (1) and the socket housing (2) are inserted into each other correspondingly.

11. The fiber optic connector assembly of claim 10, wherein: Positioning claws (26) are arranged on the plug housing (1) and the socket housing (2), and limiting steps (25) are arranged on the jack mechanism and the plug mechanism, and the positioning claws (26) are clamped with the limiting steps (25).

Images