Optical fiber connector and adapter thereof

Abstract

The utility model mainly relates to the field of optical fiber communication, in particular to an optical fiber connector and an adapter and a communication port thereof, which are used for bearing optical fibers and provided with a communication interface end face. The inner shell is provided with a front body and a rear body, the polar key is provided with a sliding rail, and the polar key is detachably arranged on one of the two first front faces through the sliding rail; the extending part of the polar key arranged on the first front surface is lower than the second front surface, or the extending part of the polar key is flush with the second front surface; an elastic member; the outer shell is arranged on the rear main body in a sliding manner; the elastic piece is arranged between the outer shell and the inner shell; the two outer shell side faces are lower than the second front face, or the two outer shell side faces are flush with the second front face.

Description

Technical Field

[0001] The utility model mainly relates to the field of optical fiber communication, in particular to an optical fiber connector and an adapter thereof. Background Art

[0002] Prior art, such as the patent with publication number US11307369B2, discloses "an optical fiber connector, comprising: a multi-fiber ferrule configured to terminate a plurality of optical fibers; a connector housing having a front end portion and a rear end portion spaced apart along a longitudinal axis; the connector housing comprising a top portion and a bottom portion spaced apart along a transverse axis perpendicular to the longitudinal axis, the connector housing being configured to hold the multi-fiber ferrule so that the multi-fiber ferrule is exposed through the front end portion for optical connection, and the plurality of optical fibers are spaced apart from each other in rows extending parallel to the transverse axis, a depressible latch located above the top of the connector housing; and an elongated arm connected to the connector housing above the top portion and configured to be pulled to actuate the depressible latch; wherein the elongated arm comprises a front end portion and a rear end portion spaced apart along the longitudinal axis; wherein the front end of the elongated arm The depressible latch is configured to have a front end and a rear end spaced apart along the longitudinal axis, and the depressible latch extends upward along the transverse axis when the depressible latch extends along the longitudinal axis from the front end of the depressible latch to the rear end of the depressible latch. A depressible latch; wherein the rear end portion of the depressible latch is spaced apart along the transverse axis above the top of the connector housing; wherein the front end portion of the elongated arm includes an edge defining the front end of the opening; wherein the depressible latch has an upper surface, the edge being opposite to the upper surface: wherein the elongated arm is configured to be pulled backward along the longitudinal axis relative to the connector housing, whereby the edge slides longitudinally along the upper surface to depress the depressible latch. "This patent integrates the locking structure and the polarity mechanism, but the structure is complicated.

[0003] For example, the patent with publication number US11333836B2 discloses “an adapter for mating with an optical fiber connector, the adapter comprising:

[0004] An outer shell having a first end portion and a second end portion spaced apart along a longitudinal axis, the outer shell including a first side wall and a second side wall spaced apart along a transverse axis perpendicular to the longitudinal axis, the outer shell having a width extending from the first side wall to the second side wall along the transverse axis, the outer shell including an upper wall and a lower wall spaced apart along a transverse axis perpendicular to the transverse axis and oriented perpendicular to the longitudinal axis, each of the upper wall and the lower wall having an inner surface, the outer shell defining a plurality of channels spaced apart along the width, each channel being configured to accommodate an optical fiber connector, the plurality of channels including a first channel and a second channel; and a first longitudinal rib formed on the inner surface of the upper wall at a position spaced apart along the width of the outer shell between the first side wall and the second side wall; and a second rib formed on the inner surface of the lower wall at a position spaced apart along the width of the outer shell between the first side wall and the second side wall, the first rib and the second rib being aligned along the width of the outer shell, the first rib being spaced apart from the second rib along the transverse axis by a transverse gap, wherein the first longitudinal rib and the second longitudinal rib are located between the first channel and the second channel. The longitudinal ribs of the patent allow a larger gap between each connector Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an optical fiber connector and an adapter thereof, and the utility model is implemented through the following technical solutions:

[0006] An optical fiber connector, a communication port, is used to carry an optical fiber and has a communication interface end face;

[0007] An inner shell, the inner shell having a front body and a rear body, the interior of the inner shell having a housing cavity for accommodating the optical fiber and the communication port, the front end of the front body allowing the end face of the communication interface to be exposed; the front body and the rear body each comprising a top face, a bottom face and two side faces, the widths of the two side faces being greater than the widths of the top face and the bottom face; the side face of the front body comprising a first front face close to the front end and a second front face at a position where the front body is close to the rear body, the first front face being lower than the second front face; a slide groove being provided on the first front face; the second front face at a position where the front body is close to the rear body is higher than the side face of the rear body;

[0008] A polarity key having a slide rail, wherein the polarity key is detachably arranged on one of the two first front surfaces through the slide rail; a protruding portion of the polarity key arranged on the first front surface is lower than the second front surface, or the protruding portion of the polarity key is flush with the second front surface;

[0009] Elastic parts;

[0010] The outer shell comprises an outer shell top surface, an outer shell bottom surface and two outer shell side surfaces; the outer shell is slidably arranged on the rear body; the elastic member is arranged between the outer shell and the inner shell, and provides a forward movement tendency for the outer shell, so that the outer shell abuts against the rear end edge of the second front surface; the two outer shell side surfaces are lower than the second front surface, or the two outer shell side surfaces are flush with the second front surface.

[0011] Preferably, the top surface and the bottom surface of the front body are provided with a card block that cooperates with the adapter, and the top surface and the bottom surface of the front body are provided with guide groove plates on both sides;

[0012] The inner side of the outer shell close to the front main body is provided with a receiving groove matched with the adapter.

[0013] Preferably, the tail end of the outer shell extends out from the rear body; and a bayonet is provided at the tail end of the outer shell;

[0014] It also includes a tail sleeve, which is provided with a tail sleeve clamping block, and the tail sleeve is fixed to the tail end of the outer shell through the tail sleeve clamping block.

[0015] Preferably, a rear body elastic part step is provided at the top and bottom of the rear body at the rear position, and an outer body elastic part step is provided on the inner side of the top and bottom of the outer body toward the rear end, and the rear body elastic part step and the outer body elastic part step form a cavity for accommodating the elastic part.

[0016] Preferably, the top and the bottom of the outer shell are provided with auxiliary fixing blocks which cooperate with the adapter grooves on the outer wall of the adapter.

[0017] The utility model also provides an optical fiber connector and an adapter thereof, including the above-mentioned connector and adapter;

[0018] The adapter has an adapter outer shell, and a plurality of docking parts are arranged inside the adapter outer shell, and a single docking part corresponds to one connector; a partition is arranged on one side of each docking part, and a card slot matching with the polarity key is arranged on the partition;

[0019] When the connector is inserted and fixed to the adapter, the partition is located at the position of the first front face, and the front body and a portion of the outer shell of the connector are located in the adapter.

[0020] Preferably, the top surface and the bottom surface of the front body are provided with a block matched with the adapter, and both sides of the top surface and the bottom surface of the front body are provided with a guide groove plate;

[0021] The inner side of the outer shell close to the front body is provided with a receiving groove which cooperates with the adapter and is arranged toward the card block;

[0022] The adapter is provided with a claw extending forward, the claw having an extension arm, a protruding portion and an inserting portion; the extension arm is fixed inside the adapter, the protruding portion is located at the end of the extension arm and protrudes inward, and the inserting portion is located in front of the protruding portion;

[0023] When the connector is inserted into the adapter, the connector enters along the extension arm through the guide plate, and after the protrusion passes over the block on the front body, the insertion portion enters the receiving groove of the outer shell.

[0024] Preferably, the tail end of the outer shell extends out from the rear body; and a bayonet is provided at the tail end of the outer shell;

[0025] It also includes a tail sleeve, wherein the tail sleeve is provided with a tail sleeve clamping block, and the tail sleeve is fixed to the tail end of the outer shell through the tail sleeve clamping block;

[0026] When the connector is fixed to the adapter, the boot is located outside the adapter.

[0027] Preferably, a rear body elastic part step is provided at the top and bottom of the rear body at the rear position, an outer body elastic part step is provided on the inner side of the top and bottom of the outer body at the rear, and a cavity for accommodating the elastic part is formed between the rear body elastic part step and the outer body elastic part step.

[0028] Preferably, the top and bottom of the outer shell are provided with auxiliary fixing blocks that cooperate with the outer wall of the adapter;

[0029] The edges of the insertion openings at the top and bottom of the adapter outer shell of the adapter are provided with adapter grooves that cooperate with the auxiliary fixing block;

[0030] When the connector is inserted into the adapter, the auxiliary fixing block is located outside the adapter and embedded in the adapter groove, and the contour of the connector does not protrude from the contour of the adapter in the axial direction of the connector.

[0031] Beneficial effects of the utility model: the polarity key of the optical fiber connector provided by the utility model is located on the first front face, and the first front face is lower than the second front face, so that the polarity key can be lower than the second front face and the outer shell, or the polarity key is flush with the second front face and the outer shell, so that there is no protruding part on the whole, and the connectors can be arranged more closely, thereby saving space;

[0032] An adapter groove is provided at the insertion port of the adapter. After the connector is fixed to the adapter, the auxiliary fixing block is located in the adapter groove to assist in fixing. At the same time, the auxiliary fixing block is located on the outside of the adapter, making full use of the thickness of the adapter outer shell. In this way, the outline of the connector does not protrude from the outline of the adapter, and the adapter can be arranged more tightly to save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram showing the assembly structure of the optical fiber array and the tailstock of the present invention;

[0034] Figure 2 A schematic diagram showing the structure of the inner housing and tailstock of the present invention in a disassembled state;

[0035] Figure 3 A structural schematic diagram showing the assembly state of the inner housing and the tailstock of the present invention;

[0036] Figure 4 The schematic diagram of the structure of the connector when the light array is used in the present invention is shown;

[0037] Figure 5 The cross-sectional structure diagram of the connector of the present invention when a ceramic ferrule is used is shown;

[0038] Figure 6 The schematic diagram of the structure of the tail sleeve of the present invention when driving the outer shell to move backward is shown;

[0039] Figure 7 A schematic structural diagram of the connector of the present invention from an axial perspective is shown;

[0040] Figure 8 A schematic diagram of the structure of the adapter of the present invention from a first perspective is shown;

[0041] Fig. 9 A schematic diagram showing the structure of the second corner of the adapter of the present patent;

[0042] Fig.10 A schematic diagram of the partial cross-sectional structure of the connector of the present patent when fixed on the adapter is shown. DETAILED DESCRIPTION

[0043] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0044] An optical fiber connector, such as Figures 1 to 10 As shown, including:

[0045] Communication port 1 is used to carry optical fiber and has a communication interface end face. The communication port can be an optical fiber array similar to an MPO interface, or a dual-core ceramic ferrule, etc. The optical fiber is fixed in the communication port and the end face of the optical fiber is exposed at the front end so as to interact with other external devices for data.

[0046] The inner housing 2 has a front body 3 and a rear body 4. The inner housing 2 has a housing cavity for accommodating the optical fiber and the communication port 1, and the front end of the front body 3 allows the end face of the communication interface to be exposed. A tail seat 5 is fixed to the rear end of the rear body 4. The tail seat 5 closes the rear end of the inner housing 2, and the tail seat 5 has an optical cable entry port, allowing the optical cable to enter the inner housing 2 from the rear. The tail seat 5 has a spring seat.

[0047] like Figure 1 As shown, for the optical fiber array, the spring 6 abuts between the tail of the array port and the spring seat of the tail seat 5, and the tail seat 5 is fixed to the rear body 4 through the protruding blocks 7 located at the top and the bottom.

[0048] like Figure 2 and Figure 3 As shown, for the dual-core ceramic ferrule structure, there are two springs 8 and both are in contact between the tail of the ceramic ferrule and the spring seat of the tail seat 5. The tail seat 5 is fixed to the rear body 4 by protruding blocks 9 on both sides.

[0049] The top and bottom of the tailstock 5 are both provided with a rear body elastic member step 10. The rear body elastic member step 10 is arranged in a groove shape for accommodating an outer shell elastic member, wherein the outer shell elastic member is an outer shell spring 11.

[0050] like Figure 3 As shown, the front body 3 and the rear body 4 both include a top surface 12, a bottom surface (opposite to the top surface 12, not marked due to angle issues) and a side surface 13 (only one side surface is marked here, and the other side surface is not marked due to angle issues), and the width W2 of the two side surfaces is greater than the width W1 of the top surface and the bottom surface. The side surface of the front body has a first front surface 14 close to the front end and a second front surface 15 at a position where the front body is close to the rear body, and the first front surface 14 is lower than the second front surface 15, and the two are arranged in a similar step-like manner. A slide groove 16 is arranged on the first front surface 14 along the axial direction D1. The second front surface 15 at a position where the front body is close to the rear body is higher than the side surface of the rear body 4, so that the second front surface 15 of the front body 3 and the side surface of the rear body 4 form a step. The top surface, bottom surface and side surface here can be understood as the surface of the inner shell 2 in this direction.

[0051] like Figure 4 and Figure 5As shown, the outer shell 17 includes an outer shell top surface 18, an outer shell bottom surface (opposite to the outer shell top surface 18, not marked due to angle issues) and an outer shell side surface 19 (only one outer shell side surface is marked here, and the other outer shell side surface is not marked due to angle issues). The outer shell 17 is sleeved on the rear body 4 and can slide back and forth relative to the rear body 4. The inner sides of the top and bottom of the outer shell 17 are provided with an outer shell elastic member step 20 toward the rear end, and a cavity for accommodating an elastic member, i.e., an outer shell spring 11, is formed between the rear body elastic member step 10 and the outer shell elastic member step 20.

[0052] The outer shell spring 11 is arranged between the outer shell 17 and the inner shell 2, and provides the outer shell 17 with a tendency to move forward, so that the outer shell 17 abuts against the rear edge of the second front face 15, that is, abuts against the step formed by the second front face 15 of the front body 3 located at a high position and the side face of the rear body 4 located at a low position. The two outer shell side faces 19 are lower than the second front face 15, or the two outer shell side faces 19 are flush with the second front face 15.

[0053] like Figure 6 and Figure 7 As shown, the polarity key 21 has a slide rail 22, and the polarity key 21 is detachably arranged on one of the two first front faces 14 through the slide rail 22. The protruding portion of the polarity key 21 arranged on the first front face 14 is lower than the second front face 15, or the protruding portion of the polarity key 21 is flush with the second front face 15. In this way, when inserted into the adapter, the entire front body 3 and a part of the outer shell 17 can directly enter the adapter. At the same time, since the polarity key 21 does not protrude from the second front face 15 and the outer shell side face 19 at the side, the distance between each connector can be closer, thereby saving space.

[0054] The tail end of the outer shell 17 extends out from the rear main body, and a bayonet is provided at the tail end of the outer shell 17. The tail sleeve 23 is provided with a tail sleeve clamping block, and the tail sleeve 23 is fixed to the tail end of the outer shell 17 through the tail sleeve clamping block. The tail sleeve 23 has an optical cable channel inside, which allows the optical cable to pass through and enter the main body of the optical fiber connector. The tail sleeve 23 and the optical cable can slide relative to each other, so that the outer shell 17 is moved backward by pulling the tail sleeve 23, thereby unlocking the connector from the adapter.

[0055] like Figure 8 and Fig. 9As shown, the adapter 24 has an adapter outer shell 25, and a plurality of docking parts are arranged inside the adapter outer shell, and a single docking part corresponds to a connector. A partition 26 is arranged on one side of each docking part, and a card slot 27 that cooperates with the polarity key 21 is arranged on the partition 26. The size of the partition 26 is set so that when the connector is inserted and fixed to the adapter 24, the partition 26 is located at the position of the first front face 14 of the connector, and the front body 3 and a part of the outer shell 17 are located in the adapter 24.

[0056] Regarding the locking method of the connector and the adapter, specifically:

[0057] Blocks 28 cooperating with the adapter 24 are provided on the top and bottom surfaces of the front body 3 , and guide groove plates 29 are provided on both sides of the top and bottom surfaces of the front body 3 .

[0058] An accommodating groove 30 disposed toward the clamping block 28 and cooperating with the adapter 24 is disposed on the inner side of the outer shell 17 close to the front main body 3 .

[0059] The adapter 24 is provided with a claw extending forward, which has an extension arm 31, a protrusion 32 and an insertion portion 33. The extension arm 31 is fixed inside the adapter 24, the protrusion 32 is located at the end of the extension arm 31 and protrudes inward, and the insertion portion 33 is located in front of the protrusion 32.

[0060] When the connector is inserted into the adapter 24, the connector enters along the extension arm 31 through the guide plate 29, and the protrusion 32 contacts the block 28, so that the extension arm 31 expands outward, and at the same time, the insertion portion 33 pushes the outer shell 17 a short distance, and finally the protrusion 32 passes over the block 28 on the front body 3, the extension arm 31 returns to its original position, and the outer shell 17 moves forward, and finally, as shown in FIG. Fig.10 As shown, the insertion portion 33 enters the receiving groove 30 of the outer shell 17, and the connector is fixed in the adapter 24. When it is necessary to release, the tail sleeve 23 is pulled to make the outer shell 17 retreat, and the receiving groove 30 moves backward accordingly, and the insertion portion 33 is released from the receiving groove 30, and the insertion portion 33 can be opened outward, so that the connector is removed from the adapter 24.

[0061] The top and bottom of the outer shell 17 are provided with auxiliary fixing blocks 35 that cooperate with the adapter groove 34 of the outer wall of the adapter 24. The edges of the insertion opening at the top and bottom of the adapter outer shell 25 of the adapter 24 are provided with adapter grooves 34 that cooperate with the auxiliary fixing blocks 35.

[0062] When the connector is inserted and fixed to the adapter 24, the auxiliary fixing block 35 is located outside the adapter 24 and embedded in the adapter groove 34, and the outline of the connector does not protrude from the outline of the adapter in the axial direction D1 of the connector. That is, the connector itself has no part protruding from the adapter, so the adapters can be deployed more densely, thereby saving space. The auxiliary fixing block 35 fully utilizes the wall thickness of the adapter outer shell 25 for auxiliary fixing, thereby saving space.

Claims

1. An optical fiber connector, characterized in that: A communication port, used for carrying optical fibers and having a communication interface end face; An inner shell, the inner shell having a front body and a rear body, the interior of the inner shell having a housing cavity for accommodating the optical fiber and the communication port, the front end of the front body allowing the end face of the communication interface to be exposed; the front body and the rear body each comprising a top face, a bottom face and two side faces, the widths of the two side faces being greater than the widths of the top face and the bottom face; the side face of the front body comprising a first front face close to the front end and a second front face at a position where the front body is close to the rear body, the first front face being lower than the second front face; a slide groove being provided on the first front face; the second front face at a position where the front body is close to the rear body is higher than the side face of the rear body; A polarity key having a slide rail, wherein the polarity key is detachably arranged on one of the two first front surfaces through the slide rail; a protruding portion of the polarity key arranged on the first front surface is lower than the second front surface, or the protruding portion of the polarity key is flush with the second front surface; Elastic parts; The outer shell comprises an outer shell top surface, an outer shell bottom surface and two outer shell side surfaces; The outer shell is slidably disposed on the rear body; the elastic member is disposed between the outer shell and the inner shell, and provides a forward movement tendency for the outer shell so that the outer shell rests against the rear end edge of the second front surface; the two side surfaces of the outer shell are lower than the second front surface, or the two side surfaces of the outer shell are flush with the second front surface.

2. The optical fiber connector according to claim 1, characterized in that: The top surface and the bottom surface of the front body are provided with a card block matched with the adapter, and both sides of the top surface and the bottom surface of the front body are provided with a guide groove plate; The inner side of the outer shell close to the front main body is provided with a receiving groove matched with the adapter.

3. The optical fiber connector according to claim 1, characterized in that: The tail end of the outer shell extends out from the rear main body; the tail end of the outer shell is provided with a bayonet; It also includes a tail sleeve, which is provided with a tail sleeve clamping block, and the tail sleeve is fixed to the tail end of the outer shell through the tail sleeve clamping block.

4. The optical fiber connector according to claim 1, characterized in that: The top and bottom of the rear body are provided with rear body elastic part steps at the rear position, and the inner sides of the top and bottom of the outer body are provided with outer body elastic part steps toward the rear end, and the rear body elastic part steps and the outer body elastic part steps form a cavity for accommodating the elastic part.

5. The optical fiber connector according to claim 1, characterized in that: The top and bottom of the outer shell are provided with auxiliary fixing blocks which match with the adapter grooves on the outer wall of the adapter.

6. An optical fiber connector and an adapter thereof, characterized in that: The connector and the adapter include the connector and the adapter according to claim 1; The adapter has an adapter outer shell, and a plurality of docking parts are arranged inside the adapter outer shell, and a single docking part corresponds to one connector; a partition is arranged on one side of each docking part, and a card slot matching with the polarity key is arranged on the partition; When the connector is inserted and fixed to the adapter, the partition is located at the position of the first front face, and the front body and a portion of the outer shell of the connector are located in the adapter.

7. The optical fiber connector and the adapter thereof according to claim 6, characterized in that: The top surface and the bottom surface of the front body are provided with a block matched with the adapter, and both sides of the top surface and the bottom surface of the front body are provided with a guide groove plate; The inner side of the outer shell close to the front body is provided with a receiving groove which cooperates with the adapter and is arranged toward the card block; The adapter is provided with a claw extending forward, the claw having an extension arm, a protruding portion and an inserting portion; the extension arm is fixed inside the adapter, the protruding portion is located at the end of the extension arm and protrudes inward, and the inserting portion is located in front of the protruding portion; When the connector is inserted into the adapter, the connector enters along the extension arm through the guide plate, and after the protrusion passes over the block on the front body, the insertion portion enters the receiving groove of the outer shell.

8. The optical fiber connector and the adapter thereof according to claim 6, characterized in that: The tail end of the outer shell extends out from the rear main body; the tail end of the outer shell is provided with a bayonet; It also includes a tail sleeve, wherein the tail sleeve is provided with a tail sleeve clamping block, and the tail sleeve is fixed to the tail end of the outer shell through the tail sleeve clamping block; When the connector is fixed to the adapter, the boot is located outside the adapter.

9. The optical fiber connector and the adapter thereof according to claim 6, characterized in that: The top and bottom of the rear body are located at the rear position and are provided with a rear body elastic part step, the top and bottom of the outer body are located on the inner side of the rear and are provided with an outer body elastic part step, and a cavity for accommodating the elastic part is formed between the rear body elastic part step and the outer body elastic part step.

10. The optical fiber connector and the adapter thereof according to claim 6, characterized in that: The top and bottom of the outer shell are provided with auxiliary fixing blocks that cooperate with the outer wall of the adapter; The edges of the insertion openings at the top and bottom of the adapter outer shell of the adapter are provided with adapter grooves that cooperate with the auxiliary fixing block; When the connector is inserted into the adapter, the auxiliary fixing block is located outside the adapter and embedded in the adapter groove, and the contour of the connector does not protrude from the contour of the adapter in the axial direction of the connector.

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