Multi-core optical fiber connector with MT insertion core

Abstract

The invention relates to the technical field of optical fiber connectors, in particular to a multi-core optical fiber connector with an MT insertion core, which comprises an insertion core body, a first connector body and a second connector body, a first connecting part and a second connecting part are arranged at the two ends of the insertion core body, the first connector body and the second connector body are correspondingly provided with a first insertion table and a second insertion table, and the two insertion tables are provided with upper guide pins; the insertion core body is provided with an upper insertion channel and an upper guide hole, and the upper guide pin is inserted into the upper insertion channel through the upper guide hole; an upper communicating groove is formed in the top of the ferrule body, an upper sheath is movably assembled in a lifting mode, an upper lifting block is connected into the upper sheath through an upper pressing spring, an upper pressing block is hinged to the bottom of the upper lifting block, and a first upper pressing arm and a second upper pressing arm abut against the upper guide pin through the upper communicating groove. Through the elastic self-adaptive pressing structure, the problems of abrasion of the guide pin and reduction of the positioning precision caused by repeated plugging and unplugging of an existing connector are solved, and stable and reliable optical signal transmission is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber connector, and particularly relates to a multi-core optical fiber connector with MT ferrule. BACKGROUND

[0002] In the field of optical communication technology, the optical fiber ferrule connector is a core component for realizing optical signal transmission and connection, and the positioning accuracy thereof directly determines the stability and reliability of optical signal transmission. In order to ensure accurate alignment during the connection process, the existing optical fiber ferrule connector generally adopts a positioning structure of a guide pin matched with a guide hole. This structure is widely used in various optical communication equipment due to its simple design and low cost.

[0003] However, in actual use scenarios, the optical fiber ferrule connector needs to be plugged and unplugged multiple times according to the use requirements. With the increase of the number of plugging and unplugging, the surface of the guide pin will gradually wear out. After the guide pin is worn out, the matching accuracy of the original positioning structure will be directly damaged, causing the positioning accuracy of the optical fiber ferrule connector to decrease significantly. The insufficient positioning accuracy not only affects the transmission efficiency of optical signals, but also may cause problems such as signal attenuation, which is difficult to meet the use requirements of high-precision optical communication scenarios. SUMMARY

[0004] The present application aims at the above-mentioned deficiencies in the prior art, and provides a multi-core optical fiber connector with MT ferrule.

[0005] The purpose of the present application is achieved by the following technical scheme: a multi-core optical fiber connector with MT ferrule, comprising a ferrule body, a first connector body and a second connector body.

[0006] One end of the ferrule body along the length direction is provided with a first connecting part; the other end of the ferrule body along the length direction is provided with a second connecting part; the first connector body is provided with a first plug-in table abutting against the first connecting part; the second connector body is provided with a second plug-in table abutting against the second connecting part.

[0007] The first plug-in table and the second plug-in table are both provided with an upper guide pin; the ferrule body is provided with an upper plug-in channel; the first connecting part and the second connecting part are both provided with an upper guide hole in communication with the upper plug-in channel; the upper guide pin is arranged in the upper plug-in channel after passing through the upper guide hole; the top of the ferrule body is provided with an upper communication groove in communication with the upper plug-in channel.

[0008] The plug core body is provided with an upper protective sleeve; the top of the upper protective sleeve is provided with an upper pressing groove; the upper pressing groove is provided with an upper lifting block in an extension and contraction manner; the upper lifting block and the upper pressing groove are provided with an upper pressing spring; the bottom of the upper lifting block is provided with an upper pressing block; one end of the upper pressing block is provided with a first upper pressing arm; the other end of the upper pressing block is provided with a second upper pressing arm; the middle part of the upper pressing block is hinged to the middle part of the upper lifting block; the first upper pressing arm is abutted to the upper guide needle of the first plug-in table in the upper plug-in channel through the upper communication groove; the second upper pressing arm is abutted to the upper guide needle of the second plug-in table in the upper plug-in channel through the upper communication groove.

[0009] The plug core body is provided with a transmission optical fiber; the two ends of the transmission optical fiber are respectively arranged in the first connecting part and the second connecting part; the first plug-in table is provided with a first optical fiber abutting to one end of the transmission optical fiber; the second plug-in table is provided with a second optical fiber abutting to the other end of the transmission optical fiber.

[0010] The first plug-in table and the second plug-in table are both provided with a lower guide needle; the plug core body is provided with a lower plug-in channel; the first connecting part and the second connecting part are both provided with a lower guide hole in communication with the lower plug-in channel; the lower guide needle is arranged in the lower plug-in channel through the lower guide hole; the bottom of the plug core body is provided with a lower communication groove in communication with the lower plug-in channel.

[0011] The plug core body is provided with a lower protective sleeve; the bottom of the lower protective sleeve is provided with a lower pressing groove; the lower pressing groove is provided with a lower lifting block in an extension and contraction manner; the lower lifting block and the lower pressing groove are provided with a lower pressing spring; the top of the lower lifting block is provided with a lower pressing block; one end of the lower pressing block is provided with a first lower pressing arm; the other end of the lower pressing block is provided with a second lower pressing arm; the middle part of the lower pressing block is hinged to the middle part of the lower lifting block; the first lower pressing arm is abutted to the lower guide needle of the first plug-in table in the lower plug-in channel through the lower communication groove; the second lower pressing arm is abutted to the lower guide needle of the second plug-in table in the lower plug-in channel through the lower communication groove.

[0012] The upper protective sleeve is arranged at the top of the lower protective sleeve; the upper protective sleeve and the lower protective sleeve are detachably connected.

[0013] The upper guide hole is provided with an upper rubber sleeve; the upper guide needle is connected with the upper rubber sleeve in an interference fit; the lower guide hole is provided with a lower rubber sleeve; the lower guide needle is connected with the lower rubber sleeve in an interference fit.

[0014] The plug core body is provided with a limiting groove extending along the height direction; the upper protective sleeve is provided with an upper limiting pin; the upper limiting pin is slidingly arranged at the top of the limiting groove; the lower protective sleeve is provided with a lower limiting pin; the lower limiting pin is slidingly arranged at the bottom of the limiting groove.

[0015] The application is further provided with a guide boss on the upper and lower sheaths; the first and second connector bodies are provided with a guide slope matched with the guide boss and a guide vertical slot for placing the guide boss.

[0016] The application is further provided with an upper abutting groove on the top of the upper guide pin for abutting with the first and second upper pressing arms; a lower abutting groove on the bottom of the lower guide pin for abutting with the first and second lower pressing arms.

[0017] The application is further provided with an elastic claw on the upper sheath; the top of the elastic claw is fixedly connected with the upper sheath; the bottom of the elastic claw is provided with a locking part; the lower sheath is provided with a positioning slot; the locking part is movably arranged in the positioning slot.

[0018] The application is further provided with a first vertical positioning slot, a second vertical positioning slot, a first inclined positioning slot and a second inclined positioning slot in the positioning slot; the top of the first vertical positioning slot and the top of the first inclined positioning slot are communicated with the top of the lower sheath; the bottom of the first vertical positioning slot is communicated with the top of the second inclined positioning slot; the bottom of the first inclined positioning slot is communicated with the top of the second vertical positioning slot; the bottom of the second vertical positioning slot is communicated with the bottom of the second inclined positioning slot; the lower sheath is provided with a locking slot communicated with the second inclined positioning slot.

[0019] The application is further provided with a reset spring between the upper and lower sheaths.

[0020] The application has the following advantages: the upper pressing block and the upper lifting block are hingedly matched with the upper pressing spring to form an elastic self-adapting pressing structure; even if the upper guide pin is worn due to repeated plugging and unplugging, the elastic force of the upper pressing spring can still drive the first and second upper pressing arms to abut against the upper guide pin at all times, maintain the matching precision of the positioning structure, and avoid the decline of optical signal transmission efficiency or signal attenuation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic diagram of the first connector body, the plug core body and the second connector body after installation of the application;

[0022] Figure 2 is a sectional view of the first connector body, the plug core body and the second connector body after installation of the application;

[0023] Figure 3 is Figure 2 is a local enlarged view of site A in FIG. 5;

[0024] Figure 4 is a sectional view of the first connector body, the plug core body and the second connector body before installation of the application;

[0025] Figure 5 is Figure 4 is a partial enlarged view of B part in the figure;

[0026] Figure 6 is a structural schematic view of the cooperation of the ferrule body, the upper sheath and the lower sheath of the application;

[0027] Figure 7 is Figure 6 is a partial enlarged view of C part in the figure;

[0028] Figure 8 is a sectional view of the cooperation of the ferrule body, the upper sheath and the lower sheath of the application;

[0029] Figure 9 is a structural exploded view of the cooperation of the ferrule body and the lower sheath of the application;

[0030] Figure 10 is a structural exploded view of the cooperation of the ferrule body and the upper sheath of the application;

[0031] Figure 11 is a structural schematic view of the first connector body of the application;

[0032] Figure 12 is a structural schematic view of the second connector body of the application;

[0033] 1, ferrule body; 11, first connecting part; 12, second connecting part; 13, transmission optical fiber; 14, limiting groove; 2, first connector body; 21, first insertion platform; 22, first optical fiber; 23, guide inclined surface; 24, guide vertical groove; 3, second connector body; 31, second insertion platform; 32, second optical fiber; 41, upper guide needle; 42, lower guide needle; 43, upper rubber sleeve; 44, lower rubber sleeve; 45, upper abutting groove; 46, lower abutting groove; 5, upper insertion channel; 51, upper guide hole; 52, upper communication groove; 6, lower insertion channel; 61, lower guide hole; 62, lower communication groove; 7, upper sheath; 71, upper pressing groove; 72, upper lifting block; 73, upper pressing spring; 74, upper pressing block; 75, first upper pressing arm; 76, second upper pressing arm; 77, upper limiting pin; 78, elastic claw; 79, locking part; 8, lower sheath; 81, lower pressing groove; 82, lower lifting block; 83, lower pressing spring; 84, lower pressing block; 85, first lower pressing arm; 86, second lower pressing arm; 87, lower limiting pin; 88, guide boss; 91, first vertical positioning groove; 92, second vertical positioning groove; 93, first inclined positioning groove; 94, second inclined positioning groove; 95, locking groove; 96, reset spring. DETAILED DESCRIPTION

[0034] The application will be further described in conjunction with the following examples.

[0035] By Figures 1 to 12 It can be known that the multi-core optical fiber connector with MT ferrule in the embodiment comprises a ferrule body 1, a first connector body 2 and a second connector body 3.

[0036] One end of the ferrule body 1 along the length direction is provided with a first connecting part 11; the other end of the ferrule body 1 along the length direction is provided with a second connecting part 12; the first connector body 2 is provided with a first plug-in table 21 abutting against the first connecting part 11; the second connector body 3 is provided with a second plug-in table 31 abutting against the second connecting part 12.

[0037] The first plug-in table 21 and the second plug-in table 31 are both provided with an upper guide needle 41; the ferrule body 1 is provided with an upper plug-in channel 5; the first connecting part 11 and the second connecting part 12 are both provided with an upper guide hole 51 in communication with the upper plug-in channel 5; the upper guide needle 41 is arranged in the upper plug-in channel 5 after passing through the upper guide hole 51; the top of the ferrule body 1 is provided with an upper communication groove 52 in communication with the upper plug-in channel 5.

[0038] The ferrule body 1 is movably provided with an upper sheath 7; the top of the upper sheath 7 is provided with an upper pressing groove 71; the upper pressing groove 71 is movably provided with an upper lifting block 72; the upper lifting block 72 and the upper pressing groove 71 are provided with an upper pressing spring 73 therebetween; the bottom of the upper lifting block 72 is provided with an upper pressing block 74; one end of the upper pressing block 74 is provided with a first upper pressing arm 75; the other end of the upper pressing block 74 is provided with a second upper pressing arm 76; the middle part of the upper pressing block 74 is hingedly connected with the middle part of the upper lifting block 72; the first upper pressing arm 75 abuts against the upper guide needle 41 of the first plug-in table 21 in the upper plug-in channel 5 after passing through the upper communication groove 52; the second upper pressing arm 76 abuts against the upper guide needle 41 of the second plug-in table 31 in the upper plug-in channel 5 after passing through the upper communication groove 52.

[0039] Specifically, the multi-core fiber connector with an MT ferrule in the embodiment, when in use, the upper guide needle 41 on the first connector body 2 is inserted into the upper guide hole 51, and the upper guide needle 41 on the second connector body 3 is inserted into the upper guide hole 51, so that the upper guide needle 41 of the first connector body 2 and the upper guide needle 41 of the second connector body 3 are respectively inserted into both ends of the upper insertion channel 5, and at this time, the upper guide needle 41 is exposed in the upper communication groove 52; then the upper sheath 7 is driven to descend, and the first insertion table 21 and the second insertion table 31 can be protected, and in the process of descending of the upper sheath 7, the upper lifting block 72 drives the upper pressing block 74 to descend, so that the first upper pressing arm 75 is pressed with the upper guide needle 41 of the first insertion table 21 located in the upper insertion channel 5 after passing through the upper communication groove 52, and the second upper pressing arm 76 is pressed with the upper guide needle 41 of the second insertion table 31 located in the upper insertion channel 5 after passing through the upper communication groove 52, so as to ensure the stability of the connection between the first connector body 2, the ferrule body 1 and the second connector body 3.

[0040] Because the middle part of the upper pressing block 74 is hinged with the middle part of the upper lifting block 72 to form a lever transmission structure, and cooperates with the upper pressing spring 73 between the upper lifting block 72 and the upper pressing groove 71, an elastic self-adaptive compensation mechanism is formed; even if the surface of the upper guide needle 41 is worn due to multiple insertions and extractions, the upper pressing spring 73 can always provide continuous and stable downward elastic force to drive the upper pressing block 74 to flexibly rotate around the hinge point, and then drive the first upper pressing arm 75 and the second upper pressing arm 76 to automatically adapt to the gap after the wear of the upper guide needle 41, so as to always reliably abut against the two upper guide needles 41, effectively offset the influence of the wear of the upper guide needle 41 on the positioning accuracy, and finally realize the long-term maintenance of the stability of the connection between the first connector body 2, the ferrule body 1 and the second connector body 3, avoid the problem of the decrease of optical signal transmission efficiency or signal attenuation caused by positioning deviation, and adapt to the high-frequency insertion and extraction demand of high-precision optical communication scenes.

[0041] The multi-core fiber connector with an MT ferrule in the embodiment, the ferrule body 1 is internally provided with a transmission optical fiber 13; both ends of the transmission optical fiber 13 are respectively arranged in the first connecting portion 11 and the second connecting portion 12; the first insertion table 21 is provided with a first optical fiber 22 abutting against one end of the transmission optical fiber 13; and the second insertion table 31 is provided with a second optical fiber 32 abutting against the other end of the transmission optical fiber 13. Specifically, after the upper guide needle 41 is inserted into the upper guide hole 51, the first insertion table 21 and the first connecting portion 11 abut against each other to make the first optical fiber 22 abut against one end of the transmission optical fiber 13, and the second insertion table 31 and the second connecting portion 12 abut against each other to make the second optical fiber 32 abut against the other end of the transmission optical fiber 13, so that the first optical fiber 22, the transmission optical fiber 13 and the second optical fiber 32 can realize signal transmission.

[0042] The first insertion platform 21 and the second insertion platform 31 are each provided with a lower guide needle 42; the ferrule body 1 is provided with a lower insertion channel 6; the first connecting part 11 and the second connecting part 12 are each provided with a lower guide hole 61 in communication with the lower insertion channel 6; the lower guide needle 42 is arranged in the lower insertion channel 6 after passing through the lower guide hole 61; the bottom of the ferrule body 1 is provided with a lower communication groove 62 in communication with the lower insertion channel 6;

[0043] The ferrule body 1 is movably arranged in the lower sheath 8; the bottom of the lower sheath 8 is provided with a lower pressing groove 81; the lower pressing groove 81 is movably arranged with a lower lifting block 82; the lower lifting block 82 and the lower pressing groove 81 are provided with a lower pressing spring 83; the top of the lower lifting block 82 is provided with a lower pressing block 84; one end of the lower pressing block 84 is provided with a first lower pressing arm 85; the other end of the lower pressing block 84 is provided with a second lower pressing arm 86; the middle part of the lower pressing block 84 is hingedly connected with the middle part of the lower lifting block 82; the first lower pressing arm 85 abuts against the lower guide needle 42 of the first insertion platform 21 in the lower insertion channel 6 after passing through the lower communication groove 62; the second lower pressing arm 86 abuts against the lower guide needle 42 of the second insertion platform 31 in the lower insertion channel 6 after passing through the lower communication groove 62.

[0044] The upper sheath 7 is arranged on the top of the lower sheath 8; the upper sheath 7 and the lower sheath 8 are detachably connected.

[0045] Specifically, the multi-core optical fiber connector with an MT ferrule in the embodiment is used by inserting the lower guide needle 42 on the first insertion platform 21 of the first connector body 2 into the lower guide hole 61 and inserting the lower guide needle 42 on the second insertion platform 31 of the second connector body 3 into the lower guide hole 61, so that the lower guide needle 42 of the first connector body 2 and the lower guide needle 42 of the second connector body 3 are respectively inserted into both ends of the lower insertion channel 6, and at this time, the lower guide needle 42 is exposed in the lower communication groove 62; then the lower sheath 8 is driven to rise, so as to protect the first insertion platform 21 and the second insertion platform 31, and in the process of rising of the lower sheath 8, the lower lifting block 82 drives the lower pressing block 84 to rise, so that the first lower pressing arm 85 abuts against the lower guide needle 42 of the first insertion platform 21 in the lower insertion channel 6 after passing through the lower communication groove 62, and the second lower pressing arm 86 abuts against the lower guide needle 42 of the second insertion platform 31 in the lower insertion channel 6 after passing through the lower communication groove 62, so as to ensure the stability of the connection among the first connector body 2, the ferrule body 1 and the second connector body 3.

[0046] Due to the middle part of the lower pressing block 84 is hinged with the middle part of the lower lifting block 82 to form a lever transmission structure, cooperating with the lower pressing spring 83 between the lower lifting block 82 and the lower pressing groove 81, an elastic self-adaptive compensation mechanism is formed. Even if the lower guide needle 42 is worn due to multiple plugging and unplugging, the lower pressing spring 83 can always provide a continuous and stable upward elastic force to drive the lower pressing block 84 to rotate flexibly around the hinge point, and then drive the first lower pressing arm 85 and the second lower pressing arm 86 to automatically adapt to the gap of the lower guide needle 42 after wear, and always keep reliable abutment with the two lower guide needles 42, effectively offsetting the influence of the wear of the lower guide needle 42 on the positioning accuracy, and finally realizing the long-term maintenance of the connection stability between the first connector body 2, the ferrule body 1 and the second connector body 3, avoiding the problem of light signal transmission efficiency decline or signal attenuation caused by positioning deviation, and adapting to the high-frequency plugging and unplugging use demand of high-precision optical communication scene.

[0047] In addition, before the first connector body 2, the ferrule body 1 and the second connector body 3 are installed, the upper sheath 7 and the lower sheath 8 are in an open state. When it is necessary to install the first connector body 2, the ferrule body 1 and the second connector body 3, the upper guide needle 41 is inserted into the upper guide hole 51 and the lower guide needle 42 is inserted into the lower guide hole 61, and then the upper sheath 7 and the lower sheath 8 are driven to approach each other until the upper sheath 7 and the lower sheath 8 are locked. At this time, the first plug-in table 21 and the second plug-in table 31 are arranged between the upper sheath 7 and the lower sheath 8, and can protect the first plug-in table 21 and the second plug-in table 31. At this time, the first upper pressing arm 75 and the second upper pressing arm 76 are pressed against the upper guide needle 41, and the first lower pressing arm 85 and the second lower pressing arm 86 are pressed against the lower guide needle 42, thereby ensuring the stability of the connection between the first connector body 2, the ferrule body 1 and the second connector body 3.

[0048] The upper guide hole 51 is provided with an upper rubber sleeve 43; the upper guide needle 41 is connected with the upper rubber sleeve 43 in interference fit; the lower guide hole 61 is provided with a lower rubber sleeve 44; and the lower guide needle 42 is connected with the lower rubber sleeve 44 in interference fit. Specifically, through the above-mentioned arrangement, the stability of the connection between the upper guide needle 41 and the upper guide hole 51 can be ensured, and the stability of the connection between the lower guide needle 42 and the lower guide hole 61 can be ensured. Even if the outer wall of the upper guide needle 41 and the outer wall of the lower guide needle 42 are worn, the connection between the upper guide needle 41 and the upper guide hole 51 can be stable, and the connection between the lower guide needle 42 and the lower guide hole 61 can be stable.

[0049] The multi-core fiber connector with the MT ferrule provided by the embodiment has the ferrule body 1 provided with the limiting groove 14 extending along the height direction; the upper sheath 7 is provided with the upper limiting pin 77; the upper limiting pin 77 is slidingly arranged at the top of the limiting groove 14; the lower sheath 8 is provided with the lower limiting pin 87; and the lower limiting pin 87 is slidingly arranged at the bottom of the limiting groove 14. Through the above arrangement, the lifting of the upper sheath 7 and the lifting of the lower sheath 8 can be limited.

[0050] The multi-core fiber connector with the MT ferrule provided by the embodiment has the upper sheath 7 and the lower sheath 8 both provided with the guide boss 88; the first connector body 2 and the second connector body 3 are both provided with the guide inclined surface 23 matched with the guide boss 88 and the guide vertical groove 24 for placing the guide boss 88.

[0051] Specifically, before the first connector body 2, the ferrule body 1 and the second connector body 3 are installed, the upper sheath 7 and the lower sheath 8 are in an open state; when it is needed to install the first connector body 2, the ferrule body 1 and the second connector body 3, the first insertion platform 21 is first inserted between the guide boss 88 at one end of the upper sheath 7 and the guide boss 88 at one end of the lower sheath 8, and the second insertion platform 31 is inserted between the guide boss 88 at the other end of the upper sheath 7 and the guide boss 88 at the other end of the lower sheath 8 in the same way, so that the guide boss 88 is abutted against the end of the guide inclined surface 23 away from the guide vertical groove 24; then the upper sheath 7 and the lower sheath 8 are driven to move close to each other, in the process of moving of the upper sheath 7 and the lower sheath 8, the guide boss 88 moves along the guide inclined surface 23, thereby driving the first insertion platform 21 and the second insertion platform 31 to move in the direction close to the ferrule body 1, so that the upper guide needle 41 is inserted into the upper guide hole 51 and the lower guide needle 42 is inserted into the lower guide hole 61, until the upper guide needle 41 completely enters into the upper insertion channel 5 and the lower guide needle 42 completely enters into the lower insertion channel 6, the guide boss 88 moves to the top of the guide vertical groove 24; at this time, the upper sheath 7 and the lower sheath 8 are continuously driven to move close to each other, the guide boss 88 moves downward along the guide vertical groove 24, until the upper sheath 7 and the lower sheath 8 are locked, and in the process, the first upper pressing arm 75 and the second upper pressing arm 76 press the upper guide needle 41 respectively, and the first lower pressing arm 85 and the second lower pressing arm 86 press the lower guide needle 42 respectively, thereby ensuring the stability of the connection between the first connector body 2, the ferrule body 1 and the second connector body 3.

[0052] The upper guide needle 41 is provided with an upper abutting groove 45 at the top for abutting against the first upper pressing arm 75 and the second upper pressing arm 76; and the lower guide needle 42 is provided with a lower abutting groove 46 at the bottom for abutting against the first lower pressing arm 85 and the second lower pressing arm 86. Through the above arrangement, the first upper pressing arm 75 and the second upper pressing arm 76 can be pressed against the upper guide needle 41 respectively, and the first lower pressing arm 85 and the second lower pressing arm 86 can be pressed against the lower guide needle 42 respectively.

[0053] The upper sheath 7 is provided with an elastic claw 78; the top of the elastic claw 78 is fixedly connected with the upper sheath 7; the bottom of the elastic claw 78 is provided with a locking portion 79; the lower sheath 8 is provided with a positioning groove; and the locking portion 79 is movably arranged in the positioning groove. The positioning groove comprises a first vertical positioning groove 91, a second vertical positioning groove 92, a first inclined positioning groove 93 and a second inclined positioning groove 94; the top of the first vertical positioning groove 91 and the top of the first inclined positioning groove 93 are both communicated with the top of the lower sheath 8; the bottom of the first vertical positioning groove 91 is communicated with the top of the second inclined positioning groove 94; the bottom of the first inclined positioning groove 93 is communicated with the top of the second vertical positioning groove 92; the bottom of the second vertical positioning groove 92 is communicated with the bottom of the second inclined positioning groove 94; and the lower sheath 8 is provided with a locking groove 95 communicated with the second inclined positioning groove 94. The upper sheath 7 and the lower sheath 8 are provided with a reset spring 96 therebetween.

[0054] Specifically, the multi-core fiber connector with the MT ferrule in the embodiment is in the open state before the first connector body 2, the ferrule body 1 and the second connector body 3 are installed, and the upper sheath 7 and the lower sheath 8 are in the open state due to the action of the reset spring 96, at this time, the locking part 79 of the elastic claw 78 is located at the top of the first inclined positioning groove 93; when it is necessary to install the first connector body 2, the ferrule body 1 and the second connector body 3, first, the first insertion platform 21 is inserted between the guide boss 88 at one end of the upper sheath 7 and the guide boss 88 at one end of the lower sheath 8, and the second insertion platform 31 is inserted between the guide boss 88 at the other end of the upper sheath 7 and the guide boss 88 at the other end of the lower sheath 8, so that the guide boss 88 and the guide inclined surface 23 are away from the one end of the guide vertical groove 24; then the upper sheath 7 and the lower sheath 8 are driven to be close to each other, so that the locking part 79 of the elastic claw 78 is in abutment with the first inclined positioning groove 93, and in the process of movement of the upper sheath 7 and the lower sheath 8, the guide boss 88 moves along the guide inclined surface 23, at the same time, the locking part 79 moves downward along the first inclined positioning groove 93 and the elastic claw 78 deforms, until the guide boss 88 moves to the top of the guide vertical groove 24, at this time, the locking part 79 moves to the top of the second vertical positioning groove 92;

[0055] At this time, the upper sheath 7 and the lower sheath 8 continue to be driven to be close to each other, the guide boss 88 moves downward along the guide vertical groove 24, and the locking part 79 moves downward along the second vertical positioning groove 92, until the locking part 79 moves to the bottom of the second vertical positioning groove 92, the upper sheath 7 and the lower sheath 8 are released, under the action of the reset spring 96 and the elastic claw 78, the locking part 79 moves along the second inclined positioning groove 94, until it passes through the locking groove 95, the locking part 79 falls into the locking groove 95, so as to lock the upper sheath 7 and the lower sheath 8, and in the process, the first upper pressing arm 75 and the second upper pressing arm 76 are pressed against the upper guide needle 41 respectively, and the first lower pressing arm 85 and the second lower pressing arm 86 are pressed against the lower guide needle 42 respectively, so as to ensure the stability of the connection between the first connector body 2, the ferrule body 1 and the second connector body 3;

[0056] When it is necessary to unlock the upper sheath 7 and the lower sheath 8, the upper sheath 7 and the lower sheath 8 are driven to be close to each other again, so that the locking part 79 exits from the locking groove 95, under the action of the reset spring 96 and the elastic claw 78, the locking part 79 moves along the second inclined positioning groove 94, until it passes through the first vertical positioning groove 91 and exits from the positioning groove, so as to complete the unlocking of the upper sheath 7 and the lower sheath 8.

[0057] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A multi-core fiber optic connector with an MT ferrule, characterized in that: Includes a ferrule body, a first connector body, and a second connector body; The ferrule body has a first connecting portion at one end along its length; the ferrule body has a second connecting portion at the other end along its length; the first connector body has a first insertion platform that abuts against the first connecting portion; the second connector body has a second insertion platform that abuts against the second connecting portion. Both the first and second plug-in platforms are provided with upper guide pins; the plug body is provided with an upper plug-in channel; both the first and second connecting parts are provided with upper guide holes communicating with the upper plug-in channel; the upper guide pin passes through the upper guide hole and is located in the upper plug-in channel; the top of the plug body is provided with an upper connecting groove communicating with the upper plug-in channel. The ferrule body is provided with an upper protective sleeve that can be raised and lowered; the top of the upper protective sleeve is provided with an upper pressing groove; the upper pressing groove is provided with an upper lifting block that can be extended and retracted; an upper pressing spring is provided between the upper lifting block and the upper pressing groove; an upper pressing block is provided at the bottom of the upper lifting block; a first upper pressing arm is provided at one end of the upper pressing block; a second upper pressing arm is provided at the other end of the upper pressing block; the middle part of the upper pressing block is hinged to the middle part of the upper lifting block; the first upper pressing arm abuts against the upper guide pin of the first insertion platform located in the upper insertion channel after passing through the upper connecting groove; the second upper pressing arm abuts against the upper guide pin of the second insertion platform located in the upper insertion channel after passing through the upper connecting groove.

2. A multi-core fiber optic connector with an MT ferrule according to claim 1, characterized in that: The ferrule body contains a transmission optical fiber; the two ends of the transmission optical fiber are respectively located at the first connecting part and the second connecting part; the first insertion platform is provided with a first optical fiber that abuts against one end of the transmission optical fiber; the second insertion platform is provided with a second optical fiber that abuts against the other end of the transmission optical fiber.

3. A multi-core fiber optic connector with an MT ferrule according to claim 1, characterized in that: Both the first and second plug-in platforms are provided with lower guide pins; the plug body is provided with a lower plug-in channel; both the first and second connecting parts are provided with lower guide holes communicating with the lower plug-in channel; the lower guide pin passes through the lower guide hole and is located in the lower plug-in channel; the bottom of the plug body is provided with a lower connecting groove communicating with the lower plug-in channel. The ferrule body is provided with a lower protective sleeve that can be raised and lowered; the bottom of the lower protective sleeve is provided with a lower pressing groove; the lower pressing groove is provided with a lower lifting block that can be extended and retracted; a lower pressing spring is provided between the lower lifting block and the lower pressing groove; a lower pressing block is provided at the top of the lower lifting block; a first lower pressing arm is provided at one end of the lower pressing block; a second lower pressing arm is provided at the other end of the lower pressing block; the middle part of the lower pressing block is hinged to the middle part of the lower lifting block; the first lower pressing arm abuts against the lower guide pin of the first insertion platform located in the lower insertion channel after passing through the lower connecting groove; the second lower pressing arm abuts against the lower guide pin of the second insertion platform located in the lower insertion channel after passing through the lower connecting groove. The upper sheath is located on top of the lower sheath; the upper sheath and the lower sheath are detachably connected.

4. A multi-core fiber optic connector with an MT ferrule according to claim 3, characterized in that: The upper guide hole is provided with an upper rubber sleeve; the upper guide needle is interference-fitted with the upper rubber sleeve; the lower guide hole is provided with a lower rubber sleeve; the lower guide needle is interference-fitted with the lower rubber sleeve.

5. A multi-core fiber optic connector with an MT ferrule according to claim 3, characterized in that: The ferrule body is provided with a limiting groove extending along the height direction; the upper sheath is provided with an upper limiting pin; the upper limiting pin is slidably disposed at the top of the limiting groove; the lower sheath is provided with a lower limiting pin; the lower limiting pin is slidably disposed at the bottom of the limiting groove.

6. A multi-core fiber optic connector with an MT ferrule according to claim 3, characterized in that: Both the upper and lower sheaths are provided with guide bosses; both the first connector body and the second connector body are provided with guide ramps that cooperate with the guide bosses and guide grooves for placing the guide bosses.

7. A multi-core fiber optic connector with an MT ferrule according to claim 3, characterized in that: The top of the upper guide pin is provided with an upper abutment groove for abutting against the first upper clamping arm and the second upper clamping arm; the bottom of the lower guide pin is provided with a lower abutment groove for abutting against the first lower clamping arm and the second lower clamping arm.

8. A multi-core fiber optic connector with an MT ferrule according to claim 3, characterized in that: The upper sheath is provided with an elastic claw; the top of the elastic claw is fixedly connected to the upper sheath; the bottom of the elastic claw is provided with a locking part; the lower sheath is provided with a positioning groove; the locking part is movably disposed in the positioning groove.

9. A multi-core fiber optic connector with an MT ferrule according to claim 8, characterized in that: The positioning groove includes a first vertical positioning groove, a second vertical positioning groove, a first inclined positioning groove, and a second inclined positioning groove; the top of the first vertical positioning groove and the top of the first inclined positioning groove are both connected to the top of the lower sheath; the bottom of the first vertical positioning groove is connected to the top of the second inclined positioning groove; the bottom of the first inclined positioning groove is connected to the top of the second vertical positioning groove; the bottom of the second vertical positioning groove is connected to the bottom of the second inclined positioning groove; the lower sheath is provided with a locking groove that communicates with the second inclined positioning groove.

10. A multi-core fiber optic connector with an MT ferrule according to claim 9, characterized in that: A return spring is provided between the upper and lower sheaths.

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