Optical fiber contact element

Abstract

An optical fiber contact belongs to the field of optical fiber connectors and comprises a contact body, a row of optical fiber holes transversely arranged along the contact body at intervals are arranged at the front end of the contact body, the optical fiber contact further comprises a contact rear end component connected to the rear end of the contact body, and at least two rows of optical fiber holes are arranged on the contact rear end component. The two rows of optical fiber holes are distributed along the height direction of the contact piece rear end part, each row of optical fiber holes is provided with a plurality of optical fiber holes for optical fibers to pass through one by one, and the plurality of optical fiber holes in the same row are arranged at intervals along the transverse direction of the contact piece rear end part; the total number of the optical fiber holes in the contact piece rear end part is equal to the total number of the optical fiber holes in the contact piece main body; and the core spacing of the same row of optical fiber holes on the contact piece rear end part is greater than the core spacing of the optical fiber holes on the contact piece main body. According to the utility model, the compatibility of the contact element can be improved, and more types of optical fibers can be adapted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of optical fiber connector, specifically relates to an optical fiber contact piece. BACKGROUND

[0002] With the demand of high-speed transmission and data capacity of data center 40G / 100G network wiring, the application of high-density MPO / MTP optical fiber connector and jumper is more and more common.

[0003] MPO connector can generally arrange 12-core optical fibers in a column, support one or more columns of optical fibers in the same MPO connector, and be divided into one column (12-core) and multiple columns (24-core or more) according to the number of cores arranged in the connector, and can be arranged in 16 / 32-core for 400Gb. In this way, one MPO connector can realize simultaneous transmission of 12-core or more optical fiber signals, greatly saving space and resources for optical fiber wiring.

[0004] At present, the distance between the two adjacent optical fibers of the conventional MPO plug is generally 250um, and the current new type of optical fiber is various, such as hollow optical fiber, etc., and the diameter size exceeds 250um, and there is an interference problem between different cores of the existing connector when using the new type of optical fiber. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing an optical fiber contact piece, which can improve the compatibility of the contact piece, adapt to more types of optical fibers, and protect the optical fibers in the contact piece during the contact piece back-off process, thereby avoiding the occurrence of the fiber breakage problem.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: an optical fiber contact piece, comprising a contact piece main body, a front end of the contact piece main body is provided with a column of optical fiber holes arranged transversely and spaced apart along the contact piece main body, further comprising a contact piece rear end component connected to the rear end of the contact piece main body, at least two columns of optical fiber holes are arranged on the contact piece rear end component, the two columns of optical fiber holes are distributed along the height direction of the contact piece rear end component, and a plurality of optical fiber holes in the same column are arranged transversely and spaced apart along the contact piece rear end component; each optical fiber hole on the contact piece main body and the contact piece rear end component is provided for one-to-one passing of an optical fiber; the core spacing of the optical fiber holes in the same column on the contact piece rear end component is greater than the core spacing of the optical fiber holes on the contact piece main body.

[0007] The utility model has the advantages that: in the utility model, the optical fiber passes through the multiple columns of optical fiber holes of the contact piece rear end component, and then is inserted one-to-one into the single column of optical fiber holes at the front end of the contact piece main body, so that the contact piece front end and the contact piece rear end have different core spacings respectively under the premise of ensuring one-to-one correspondence between the optical fiber and the optical fiber hole, the compatibility of the contact piece is improved, and more types of optical fibers can be adapted when the connector is plugged.

[0008] Further, the number of fiber holes in each column on the rear end part of the contact piece is equal, and the fiber holes in the columns are arranged correspondingly in the height direction.

[0009] The beneficial effect is that the arrangement of the fiber holes on the rear end part of the contact piece is neat and compact, which facilitates the wiring and arrangement of the optical fibers.

[0010] Alternatively, the number of fiber holes in at least one column on the rear end part of the contact piece is not equal to the number of fiber holes in any other column.

[0011] The beneficial effect is that another arrangement of the fiber holes on the rear end part of the contact piece is provided, which can be selected by the user according to the actual situation, thereby improving the application range of the utility model.

[0012] Further, the protection piece is further connected in the contact piece body, the conversion channel is arranged in the protection piece, the front end opening and the rear end opening at both ends of the conversion channel are respectively located on the front end face and the rear end face of the protection piece, the front end of the rear end part of the contact piece is connected to the rear end opening, and the multiple columns of optical fibers on the rear end part of the contact piece are converted into a single column of optical fibers through the conversion channel and are inserted into the optical fiber holes in the contact piece body one by one.

[0013] The beneficial effect is that the arrangement of the protection piece enables the optical fibers to be constrained into a column after passing through the multiple columns of fiber holes of the rear end part of the contact piece, and then the optical fibers can be more easily inserted into the single column of fiber holes at the front end of the contact piece body. In addition, the arrangement of the protection piece can better combine the contact piece body and the rear end part of the contact piece into a whole structure, and the contact piece can avoid the problem of fiber breakage when it is retracted.

[0014] Further, the size of the front end opening can accommodate the single column of fiber holes at the front end of the contact piece body, and the size of the rear end opening can accommodate the multiple columns of fiber holes on the rear end part of the contact piece.

[0015] The beneficial effect is that the size limitation of the front end opening and the rear end opening ensures that the protection piece can better butt joint with the single column of fiber holes at the front end of the contact piece body and the multiple columns of fiber holes of the rear end part of the contact piece, so that the optical fibers can smoothly pass through the protection piece.

[0016] Further, the inner wall of the conversion channel between the front end opening and the rear end opening is smoothly transitioned.

[0017] The beneficial effect is that the multiple columns of optical fibers can be smoothly converted into a single column of optical fibers and connected one by one with the single column of fiber holes at the front end of the contact piece body.

[0018] Further, the upper surface or the lower surface of the protection piece is provided with a gap, the length of the gap is less than or equal to the length of the protection piece, and the width of the gap is less than the width of the rear end part of the contact piece installed in the protection piece.

[0019] The beneficial effect is that the rear end part of the contact piece is more labor-saving when being installed in or taken out of the protection piece.

[0020] Further, the inner side of the rear end opening is provided with a stepped surface, and the stepped surface is matched with the front end stop of the rear end part of the contact piece to limit the installation depth of the rear end part of the contact piece in the protection piece.

[0021] The beneficial effect is that the operation feeling of the installation of the rear end part of the contact piece to the right position can be provided through the stop matching, and the rear end part of the contact piece is prevented from being inserted too deep during the installation, and meanwhile the neatness of the structure and the size of the products of the same specification and the same batch can be ensured.

[0022] Further, the contact piece body is provided with a cavity opening rearward, and the protection piece is installed in the cavity.

[0023] The beneficial effect is that the protection piece is completely installed in the contact piece body, the connection reliability of the two can be increased, and the length of the entire contact piece can be reduced.

[0024] Further, the inner wall of the cavity of the contact piece body is provided with a stop part, and the stop part is matched with the front end surface of the protection piece to limit the installation depth of the protection piece in the contact piece body.

[0025] The beneficial effect is that the operation feeling of the installation of the protection piece to the right position can be provided through the stop matching, and the protection piece is prevented from being installed too deep in the contact piece body to cause the bending of the optical fiber.

[0026] The beneficial effect of the utility model is that the utility model can convert the multiple optical fibers inserted at the tail end into single optical fibers and insert the single optical fibers into the single optical fiber holes at the front end of the contact piece body one by one, the optical fiber hole core spacing is increased under the premise that the total number of optical fibers is unchanged, and more different types of optical fibers can be adapted.

[0027] The protection piece in the utility model can convert the multiple optical fibers into single optical fibers more smoothly and regularly, and can better combine the contact piece body and the rear end part of the contact piece into a whole structure, and the problem of broken optical fiber can be avoided when the contact piece is retracted. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic view of the utility model in example 1.

[0029] Figure 2 is an end view of the front end of the contact in Example 1;

[0030] Figure 3 is an assembly view of the rear end part of the contact and the protector in Example 1;

[0031] Figure 4 is a structural view of the protector in Example 1;

[0032] Reference signs in the figure: 1, contact body, 2, protector, 3, contact rear end part, 4, optical fiber, 5, cavity, 6, solid structure part, 7, optical fiber hole, 8, notch, 9, conversion channel, 10, front end opening, 11, rear end opening, 12, step surface. DETAILED DESCRIPTION

[0033] The utility model will be further explained in detail below in combination with the drawings and examples, but it is not as a basis for any limitation on the utility model.

[0034] Example 1

[0035] Referring to the drawings shown in the accompanying Figure 1 An optical fiber contact includes a contact body 1, a protector 2 and a contact rear end part 3.

[0036] As shown in the drawings shown in the accompanying Figure 1 , 2 The front end of the contact body 1 is used for plugging with a device such as an adapter connector, and the contact body 1 is provided with a cavity 5 inside, and the cavity 5 is opened at the rear end of the contact body 1. The front of the cavity 5 is a solid structure part 6 with a certain axial length, and a plurality of optical fiber holes 7 are arranged on the solid structure part 6, the optical fiber holes 7 are through holes, and the plurality of optical fiber holes 7 are arranged in a row in a horizontal direction of the contact body. Each optical fiber hole 7 contains an optical fiber 4.

[0037] As shown in the drawings shown in the accompanying Figure 1 , 3 The contact rear end part 3 is a cuboid as a whole, and two or more rows of optical fiber holes 7 are arranged in the height direction of the contact rear end part 3, each row of optical fiber holes 7 includes a plurality of optical fiber holes 7 arranged in the width direction of the contact rear end part 3, each optical fiber hole 7 is a through hole extending in the length direction of the contact rear end part 3, and each row has the same number of optical fiber holes. In the height direction of the contact rear end part 3, the two or more rows of optical fiber holes 7 are arranged correspondingly.

[0038] As shown in the drawings shown in the accompanying Figure 1 , 4As shown, the protective component 2 is generally rectangular, and its external dimensions match the dimensions of the cavity 5 of the contact body 1, so that the protective component 2 can be installed into the cavity 5 of the contact body 1. A conversion channel 9 extending along the length of the protective component 2 is provided inside the protective component 2, with openings at the front and rear ends of the conversion channel 9, respectively. The front opening 10 of the conversion channel 9 is elongated, with a smaller dimension in the height direction. The height of the front opening 10 only needs to accommodate one row of optical fibers, therefore the height of the front opening 10 is slightly larger than the diameter of the optical fiber, and the width of the front opening 10 is larger than the total width of one row of optical fibers, so that the size of the front opening 10 can cover one row of optical fiber holes 7 at the front end of the contact body 1. The rear opening 11 of the conversion channel 9 is used to accommodate the rear component 3 of the contact. The front opening 10 and the rear opening 11 have a smooth transition.

[0039] The front end of the rear end component 3 of the contact is inserted into the rear end opening 11 of the protective component 2, and the protective component 2 is inserted into the cavity 5 of the contact body 1. In this way, through the setting of the protective component 2, the multiple rows of optical fibers on the rear end component 3 of the contact are converted into a single row of optical fibers after passing through the protective component 2, and then inserted one-to-one into the optical fiber holes of the contact body 1, realizing the conversion of the multi-row optical fiber structure into a single-row optical fiber structure.

[0040] Furthermore, the upper surface of the protective component 2 is provided with a notch 8. The length of the notch 8 is less than the length of the protective component 2, and the width of the notch 8 is less than the width of the rear end component 3 of the inner contact member of the protective component, so that the cross-section of the protective component 2 at the notch 8 position is C-shaped, such as... Figure 3 As shown, this forms a semi-enclosure of the rear end component 3 of the contact element. The notch 8 makes it easier to insert or remove the rear end component 3 of the contact element from the protective element 2. Alternatively, the notch 8 can be located on the lower surface of the protective element 2.

[0041] The contact body 1, the protective component 2, and the rear end component 3 of the contact are fixed together as a whole by adhesive bonding. When the connector is docked, the contact as a whole retracts, which can avoid the problem of fiber breakage caused by the retraction of part of the contact structure.

[0042] Furthermore, a stepped surface 12 is provided inside the rear opening 11 of the conversion channel 9 of the protective component 2. The stepped surface 12 cooperates with the front stop of the rear end component 3 of the contact element to limit the installation depth of the rear end component 3 of the contact element in the protective component 2.

[0043] Furthermore, the inner wall of the cavity of the contact body 1 is provided with a stop portion, which cooperates with the front end face stop of the protective member 2 to limit the installation depth of the protective member 2 in the contact body 1.

[0044] See againFigure 2 、 3 As shown in FIG. 1, in the embodiment, the plurality of fiber holes on the contact body 1 includes 12 fiber holes arranged at intervals, and the core spacing of adjacent fiber holes is L1. The contact rear end part 3 is provided with two rows of fiber holes, each row having 6 fiber holes arranged at intervals, and the core spacing of adjacent fiber holes is L2. Obviously, by fully utilizing the height space, the number of fiber holes in the contact rear end part 3 is reduced, so L2 is obviously greater than L1, and the protection part 2 can be provided with a relatively small lateral size L3, which also greatly reduces the lateral size of the rear end of the contact body 1, and the structure of the contact is more compact as a whole, which is beneficial to the miniaturization and high-density deployment of the contact structure.

[0045] The "core spacing" is the center distance of adjacent fiber holes 7 in the same row.

[0046] It should be noted that in the embodiment, the contact rear end part 3 is provided with two rows of fiber holes 7, so the number of fiber holes 7 in each row is half of the number of fiber holes 7 provided at the front end of the contact body 1. It can be understood that if the contact rear end part 3 is provided with three rows of fiber holes 7, then the number of fiber holes 7 in each row will be 1 / 3 of the number of fiber holes 7 on the contact body 1, and so on.

[0047] Embodiment 2

[0048] The difference between the embodiment and the embodiment 1 is that in the embodiment, the protection part 2 is no longer provided, and the contact rear end part 3 is assembled into the contact body 1 and fixed by bonding, which also has the effect of converting multiple rows of fibers into a single row of fibers, increasing the core spacing of adjacent fibers, and adapting to more types of fibers. However, in the assembly process, without the constraint of the protection part 2, it is more difficult to insert the double-row fibers one by one into the single-row fiber holes, which is not convenient to operate.

[0049] Embodiment 3

[0050] The difference between the embodiment and the embodiments 1 and 2 is that in the embodiment, the plurality of fiber holes 7 on the contact rear end part 3 is not designed in equal number, that is, the number of fiber holes 7 in at least one row is not equal to the number of fiber holes 7 in other rows, but the total number of fiber holes 7 on the contact rear end part 3 is equal to the total number of fiber holes 7 on the contact body 1, so as to ensure that each fiber 4 and the fiber hole 7 can be inserted one by one.

[0051] Embodiment 4

[0052] The difference between the embodiment and the embodiment 1 is that the fiber holes on the rear end part 3 of the contact piece in the embodiment are designed redundantly, that is, the number of the fiber holes is more than that of the fiber holes on the main body of the contact piece.

[0053] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them, and those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced by equivalents according to the above embodiments, and any modification or equivalent replacement without departing from the spirit and scope of the present application is within the protection scope of the claims.

Claims

1. An optical fiber contact, comprising a contact body (1), wherein a row of optical fiber holes (7) are arranged laterally along the front end of the contact body (1), characterized in that: It also includes a contact rear end component (3) connected to the rear end of the contact body (1), wherein at least two rows of fiber optic holes (7) are provided on the contact rear end component (3), the two rows of fiber optic holes (7) are distributed along the height direction of the contact rear end component (3), and multiple fiber optic holes (7) in the same row are arranged at lateral intervals along the contact rear end component (3); each fiber optic hole (7) on the contact body (1) and the contact rear end component (3) allows a fiber to pass through one-to-one; the core spacing of the fiber optic holes (7) in the same row on the contact rear end component (3) is greater than the core spacing of the fiber optic holes (7) on the contact body (1).

2. The optical fiber contact according to claim 1, characterized in that: In the multiple rows of fiber optic holes (7) on the rear end component (3) of the contact element, each row contains an equal number of fiber optic holes (7), and the multiple rows of fiber optic holes (7) are arranged correspondingly in the height direction.

3. The optical fiber contact according to claim 1, characterized in that: Among the multiple rows of fiber optic holes (7) on the rear end component (3) of the contact element, at least one row has a different number of fiber optic holes (7) than any other row.

4. The optical fiber contact according to any one of claims 1-3, characterized in that: The contact body (1) is also connected to a protective component (2). The protective component (2) is provided with a conversion channel (9). The front opening (10) and the rear opening (11) at both ends of the conversion channel (9) are located on the front and rear end faces of the protective component (2), respectively. The front end of the contact rear component (3) is connected to the rear opening (11). The multiple rows of optical fibers on the contact rear component (3) are converted into single rows of optical fibers through the conversion channel (9) and inserted one-to-one into the optical fiber holes (7) of the contact body (1).

5. The optical fiber contact according to claim 4, characterized in that: The size of the front opening (10) is sufficient to accommodate a row of fiber optic holes (7) at the front end of the contact body (1), and the size of the rear opening (11) is sufficient to accommodate multiple rows of fiber optic holes (7) on the rear component (3) of the contact.

6. The optical fiber contact according to claim 5, characterized in that: The inner wall of the transition channel (9) between the front opening (10) and the rear opening (11) is smoothly transitioned.

7. The optical fiber contact according to claim 4, characterized in that: The upper or lower surface of the protective component (2) is provided with a notch (8), the length of the notch (8) is less than or equal to the length of the protective component (2), and the width of the notch (8) is less than the width of the rear end component (3) of the contact installed inside the protective component (2).

8. The optical fiber contact according to claim 4, characterized in that: The inner side of the rear opening (11) is provided with a stepped surface (12), which cooperates with the front stop of the rear end component (3) of the contact to limit the installation depth of the rear end component (3) of the contact in the protective component (2).

9. The optical fiber contact according to claim 4, characterized in that: The contact body (1) has a cavity (5) with a rearward opening, and the protective member (2) is installed in the cavity (5).

10. The optical fiber contact according to claim 9, characterized in that: The inner wall of the cavity (5) of the contact body (1) is provided with a stop part, which cooperates with the front end face stop of the protective member (2) to limit the installation depth of the protective member (2) in the contact body (1).

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