Field-assembled optical fiber connector

Abstract

The present invention relates to a field-assembled optical fiber connector, which comprises: an optical cable holding component, which at least has an optical cable fixing body and a clamping part, wherein the optical cable holding component is used to fix the outer skin of the optical cable so that the optical cable holding component and the optical cable are relatively fixed; an optical fiber fixing component, which is used to fix the fixing part of the inserted optical fiber and a claw part located at the tail end; the claw part is used to cooperate with the clamping part so that the optical cable holding component is configured to the tail end of the optical fiber fixing component; a spring configuration part is also provided on the main body of the optical fiber fixing component; a spring is provided on the spring configuration part; a housing is provided with a chamber and a spring abutment part, wherein the chamber is used to configure the optical fiber fixing component and the optical cable holding component; when the optical fiber fixing component is pressed toward the tail end, it can move toward the tail end together with the optical cable holding component, and the spring abuts against the spring abutment part to rebound the optical fiber fixing component in the opposite direction.

Description

Technical Field

[0001] The invention relates to a field-assembled optical fiber connector. Background Art

[0002] The part of current field-assembled fiber optic connectors used to fix the optical cable is generally fixed on the connector itself. According to the requirements of the connector, when the connector is inserted into the adapter, the ceramic ferrule needs to be able to retreat and rebound through the spring so that the ceramic ferrule can be in close contact with the adapter. When the ceramic ferrule drives the optical cable fixing component to retreat as a whole, the tail optical cable part is fixed on the connector itself, which causes the optical fiber part to bend. Since the optical fiber itself is relatively fragile, the bending force will have an adverse effect on the optical fiber. At the same time, if the assembly gap is too small, the optical fiber will abut against the connector or the optical fiber will move, causing poor contact. Summary of the invention

[0003] In order to solve the problems in the prior art, the present invention provides a field-assembled optical fiber connector.

[0004] The technical solution provided by the present invention is:

[0005] A field-assembled optical fiber connector, comprising:

[0006] The optical cable holding component at least comprises an optical cable fixing body and a clamping portion, wherein the optical cable holding component is used to fix the outer skin of the optical cable so that the optical cable holding component and the optical cable are relatively fixed;

[0007] The optical fiber fixing component is provided with an insertion portion at the front end for configuring the ceramic ferrule, a fixing portion for fixing the inserted optical fiber, and a claw portion at the rear end; the claw portion is used to cooperate with the clamping portion so that the optical cable holding component is configured to the rear end of the optical fiber fixing component; a spring configuration portion is also provided on the main body of the optical fiber fixing component;

[0008] A spring, arranged at the spring arrangement portion;

[0009] The shell is provided with a chamber and a spring abutment, wherein the chamber is used to configure the optical fiber fixing component and the optical cable holding component; when the optical fiber fixing component is pressed toward the tail, it can move toward the tail together with the optical cable holding component, and the spring abuts against the spring abutment to rebound the optical fiber fixing component in the opposite direction.

[0010] Preferably, the optical cable holding component comprises a slot for inserting the optical cable and a cover for covering the top of the slot in a switchable manner.

[0011] Preferably, the fixing portion is configured to have a clamping spring, a V-shaped groove portion and a cover portion, the V-shaped groove portion is used to configure the optical fiber, the cover portion is used to cover the V-shaped groove portion, and the clamping spring is used to clamp and fix the V-shaped groove portion and the cover portion; a key slot for opening the V-shaped groove portion and the cover portion is provided at the gap where the V-shaped groove portion and the cover portion meet.

[0012] Preferably, the fixing portion is configured to have a pressing box, a V-shaped groove portion and a cover plate portion, the V-shaped groove portion is used to configure the optical fiber, the cover plate portion is used to cover the V-shaped groove portion, and a card ridge is provided on the outer top surface of the cover plate portion. The pressing box can be movably mounted on the V-shaped groove portion and the cover plate portion forward and backward, and when the pressing box slides onto the card ridge, the V-shaped groove portion and the cover plate portion cooperate to fix the optical fiber.

[0013] Preferably, the claw portion is provided with a clamping arm, the clamping arm is provided with a clamping slot, the optical cable holding component is provided with a clamping arm plug-in portion, the clamping arm plug-in portion is provided with a clamping block, and the optical cable holding component can be detachably configured on the optical fiber fixing component through the cooperation of the clamping slot and the clamping block.

[0014] Preferably, a limiting portion is provided at the front portion of the optical fiber fixing component, and the limiting portion limits the optical fiber fixing component to an extreme position at the front end in the housing.

[0015] Preferably, it further comprises a ceramic ferrule, wherein the ceramic ferrule is arranged at the socket portion.

[0016] Preferably, an optical fiber or an optical fiber engraved with a grating is pre-embedded in the ceramic ferrule.

[0017] Preferably, a flap that can be opened or closed is provided at the rear portion of the housing at a position for configuring the optical cable holding component, and when the flap is opened, the optical cable holding component can be removed from the optical fiber fixing component.

[0018] Preferably, the spring arrangement portion is provided between the fixing portion and the claw portion, and the spring abuts against an edge of the fixing portion.

[0019] Beneficial effects of the present invention:

[0020] The field-assembled optical fiber connector of the present invention integrates the optical cable holding component and the optical fiber fixing component so that the optical fiber fixing component and the optical cable holding component can move together as a whole when in use, thereby preventing the optical fiber between the optical cable holding component and the optical fiber fixing component from bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the field-assembled optical fiber connector of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the field-assembled optical fiber connector of the present invention;

[0023] Figure 3 is a schematic cross-sectional structure diagram of the field-assembled optical fiber connector of the present invention when it is not under pressure;

[0024] Figure 4 is a schematic cross-sectional structure diagram of the field-assembled optical fiber connector of the present invention when under pressure;

[0025] Figure 5 It is a schematic diagram of the appearance structure of the field-assembled optical fiber connector of the present invention when it is not pressed;

[0026] Figure 6 It is a schematic diagram of the appearance structure of the field-assembled optical fiber connector of the present invention when it is under pressure;

[0027] Figure 7 It is a cross-sectional structural schematic diagram of a first embodiment of a field-assembly type optical fiber connector of the present invention;

[0028] Figure 8 It is a schematic diagram of the internal structure of the second embodiment of the field assembly type optical fiber connector of the present invention;

[0029] Fig. 9 It is a schematic diagram of the exploded structure of the second embodiment of the field assembly type optical fiber connector of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings. A field-assembled optical fiber connector comprises:

[0031] like Figure 1 As shown, the optical cable holding component 1 has at least an optical cable fixing body and a clamping part 3. The optical cable holding component 1 is used to fix the outer skin of the optical cable so that the optical cable holding component 1 and the optical cable are relatively fixed; usually, the optical cable holding component 1 is designed to have a groove, and the inner part of the groove is provided with a card to wedge into the outer skin of the optical cable so as to fix the two. The top of the groove is open, that is, the optical cable is pressed from the top of the groove instead of being inserted. After being pressed, the optical cable holding component 1 has an openable or closable cover to close the top of the groove, so that the optical cable and the optical cable holding component 1 are completely fixed. At this time, the outer skin of the optical cable is usually stripped to expose the optical fiber, and the optical fiber part is the part that needs to be inserted into the connector for fixing.

[0032] like Figure 2As shown, the optical fiber fixing component is provided with a socket part for configuring a ceramic ferrule at the front end, and the part is used to insert the ceramic ferrule 2; the ceramic ferrule 2 may be pre-buried with an optical fiber or a pre-buried optical fiber engraved with a grating, that is, for a fusion-end type connector, no optical fiber may be pre-buried, but for a pre-buried connector and a corresponding ceramic ferrule 2, a section of optical fiber is pre-buried, and the inserted optical fiber is butted with the pre-buried optical fiber through a matching liquid; a fixing part 5 for fixing the inserted optical fiber and a claw part 4 at the rear end; the claw part 4 is used to cooperate with the clamping part 3 so that the optical fiber The cable holding component 1 is configured to the tail end of the optical fiber fixing component; a spring configuration portion 6 is also provided on the main body of the optical fiber fixing component; the claw portion 4 is provided with a clamping arm, and the clamping arm is provided with a bayonet 7; the optical cable holding component 1 is provided with a clamping arm plug-in portion 8, and the clamping arm plug-in portion 8 is provided with a clamping block 9, and the optical cable holding component 1 is detachably configured on the optical fiber fixing component through the cooperation of the bayonet 7 and the clamping block 9; in this way, the optical cable holding component 1 and the entire optical fiber fixing component are relatively fixed together, so that the two can move together.

[0033] A spring 10, provided at the spring arrangement portion 6;

[0034] like Figure 3 and Figure 4 As shown, the shell 14 is provided with a chamber and a spring abutment 11, wherein the chamber is used to configure the optical fiber fixing component and the optical cable holding component 1, and the spring 10 abuts against the spring abutment 11 to generate a reverse thrust on the optical fiber fixing component when the spring 10 is compressed; when the optical fiber fixing component is pressed toward the rear, it can move toward the rear integrally with the optical cable holding component 1, and the spring 10 provides a reverse rebound force.

[0035] Specifically, generally speaking, the front portion 12 and the rear portion 13 of the fixing portion 5 naturally form a relatively protruding portion, wherein the front portion 12 abuts against the front inner wall of the housing chamber in a natural state (the optical fiber fixing component is not compressed) to be relatively fixed, and the front portion 12 is a limiting portion, through which the optical fiber fixing component is limited to the extreme position at the front end of the housing 14. Figure 5 and Figure 6 As shown, when the ceramic ferrule is not compressed, it extends out of the front end of the housing 12. When the ceramic ferrule 2 is compressed, that is, after the adapter is inserted, the optical fiber fixing component and the optical cable holding component 1 move backward as a whole. In this way, the distance between the optical fiber fixing component and the optical cable holding component 1 is relatively fixed. Therefore, the optical fiber fixing component and the optical cable holding component 1 drive the optical cable to move backward as a whole, and there is no optical fiber bending phenomenon.

[0036] The rear portion 13 can be used as the abutment surface of the spring 10. In a natural state, the rear portion 13 has a certain distance from the spring abutment portion 11 to ensure that the spring 10 can be stretched;

[0037] The rear portion of the housing 14 is provided with an openable or snap-fitted flip cover 15 at the position for arranging the optical cable holding component 1. When the flip cover 15 is opened, the optical cable holding component 1 can be removed from the optical fiber fixing component.

[0038] The fixing part can have various forms, for example, in the first embodiment, Figure 2 and Figure 7 As shown, the fixing portion is configured to have a clamping spring 16, a V-shaped groove portion 17 and a cover portion 18, the V-shaped groove portion 17 is used to configure the optical fiber, the cover portion 18 is used to cover the V-shaped groove portion 17, and the clamping spring 16 is used to clamp and fix the V-shaped groove portion 17 and the cover portion 18, so as to fix the optical fiber; a key slot 19 for opening the V-shaped groove portion 17 and the cover portion 18 is provided at the gap where the V-shaped groove portion 17 and the cover portion 18 meet, and a key component is inserted into the key slot 19 to open a portion of the V-shaped groove portion 17 and the cover portion 18, thereby separating the two for inserting or removing the optical fiber.

[0039] Or, in embodiment 2, Figure 8 and Fig. 9 As shown, the fixing part can also be configured to have a press box 20, a V-shaped groove part 21 and a cover plate part 22, wherein the V-shaped groove part 21 is used to configure the optical fiber, and the cover plate part 22 is used to cover the V-shaped groove part 21. A card rib 23 is provided on the outer top surface of the cover plate part 22, and the press box 20 can be movably sleeved on the V-shaped groove part 21 and the cover plate part 22. When the press box 20 slides onto the card rib 23, the cover plate part 22 is squeezed and fixed by the card rib 23, so that the optical fiber is fixed by the V-shaped groove part 21 and the cover plate part 22. When in use, the press box 20 of the optical fiber fixing component is in contact with the optical cable holding component 1. Generally, the press box 20 is pushed forward to be fixed, and an opening of a corresponding length will be retained on the outer shell, so the overall backward movement will not affect the relative position of the press box 20.

[0040] The present invention has been described in detail by preferred embodiments. However, variations and additions to the various embodiments will be apparent to those skilled in the art upon reading the foregoing. It is the applicant's intention that all such variations and additions fall within the scope of protection of the claims of the present invention.

Claims

1. A field-assembled optical fiber connector, characterized in that: include: The optical cable holding component at least comprises an optical cable fixing body and a clamping portion, wherein the optical cable holding component is used to fix the outer skin of the optical cable so that the optical cable holding component and the optical cable are relatively fixed; The optical fiber fixing component is provided with an insertion portion at the front end for configuring the ceramic ferrule, a fixing portion for fixing the inserted optical fiber, and a claw portion at the rear end; the claw portion is used to cooperate with the clamping portion so that the optical cable holding component is configured to the rear end of the optical fiber fixing component; a spring configuration portion is also provided on the main body of the optical fiber fixing component; A spring, arranged at the spring arrangement portion; The shell is provided with a chamber and a spring abutment, wherein the chamber is used to configure the optical fiber fixing component and the optical cable holding component; when the optical fiber fixing component is pressed toward the tail, it can move toward the tail together with the optical cable holding component, and the spring abuts against the spring abutment to rebound the optical fiber fixing component in the opposite direction.

2. The field-assembled optical fiber connector according to claim 1, characterized in that: The optical cable holding component comprises a slot body for inserting the optical cable and a cover body which can cover the top of the slot body in a switchable manner.

3. The field-assembled optical fiber connector according to claim 1 is characterized in that: The fixing portion is configured to have a clamping spring, a V-shaped groove portion and a cover portion, the V-shaped groove portion is used to configure the optical fiber, the cover portion is used to cover the V-shaped groove portion, and the clamping spring is used to clamp and fix the V-shaped groove portion and the cover portion; a key slot for opening the V-shaped groove portion and the cover portion is provided at the gap where the V-shaped groove portion and the cover portion meet.

4. The field-assembled optical fiber connector according to claim 1, characterized in that: The fixing portion is configured to include a pressing box, a V-shaped groove portion and a cover plate portion, the V-shaped groove portion is used to configure the optical fiber, the cover plate portion is used to cover the V-shaped groove portion, a card ridge is provided on the outer top surface of the cover plate portion, the pressing box can be movably mounted on the V-shaped groove portion and the cover plate portion forward and backward, and when the pressing box slides onto the card ridge, the V-shaped groove portion and the cover plate portion cooperate to fix the optical fiber.

5. The field-assembled optical fiber connector according to claim 1, characterized in that: The claw portion is provided with a clamping arm, and the clamping arm is provided with a clamping port. The optical cable holding component is provided with a clamping arm plug-in portion, and the clamping arm plug-in portion is provided with a clamping block. The clamping port and the clamping block cooperate to enable the optical cable holding component to be detachably configured on the optical fiber fixing component.

6. The field-assembled optical fiber connector according to claim 1, characterized in that: A limiting portion is provided at the front of the optical fiber fixing component, and the limiting portion is used to limit the extreme position of the optical fiber fixing component at the front end in the housing.

7. The field-assembled optical fiber connector according to any one of claims 1 to 6, characterized in that: It also includes a ceramic ferrule, which is arranged at the socket part.

8. The field-assembled optical fiber connector according to claim 7, characterized in that: The ceramic ferrule is pre-buried with an optical fiber or an optical fiber engraved with a grating.

9. The field-assembled optical fiber connector according to any one of claims 1 to 6, characterized in that: The tail of the shell is provided with a flip cover which can be opened or closed at the position for arranging the optical cable holding component. When the flip cover is opened, the optical cable holding component can be removed from the optical fiber fixing component.

10. The field-assembled optical fiber connector according to any one of claims 1 to 6, characterized in that: The spring arrangement portion is disposed between the fixing portion and the claw portion, and the spring abuts against an edge of the fixing portion.

Images