A pulling type optical fiber connector

Abstract

The present invention discloses a pulling type optical fiber connector, including a male connector and a female connector, wherein one end of the male connector is provided with a first plug-in structure, and the middle part of the first plug-in structure can pass through the optical fiber; the female connector is provided with a sleeve, and the sleeve is used for inserting the end of the first plug-in structure; the female connector and the male connector, at the ends opposite to each other, one sleeve is provided with a freely rotatable rotating head, and the other is provided with a connector that is threadedly matched with the rotating head, so that the female connector and the male connector can be fixed by the rotating head and the connector threadedly matched, so that the end of the first plug-in structure remains stable after being inserted into the sleeve. In addition, since the rotating head can rotate freely, when the rotating head and the connector are tightened, it can avoid driving other parts of the optical fiber connector to rotate, and avoid affecting the internal optical fiber.

Description

Technical Field

[0001] The invention relates to the field of optical fiber connectors, and in particular to a pulling type optical fiber connector. Background Art

[0002] A traction type fiber optic connector is a type of fiber optic connector with a small cross-sectional area that can be passed through the wiring conduit of a home or to the terminal of a device together with the optical cable. Because it is usually tied to the traction cap of the fiber optic connector by a traction rope, it can be threaded through the pre-installed decoration conduit in the home to achieve the connection between the optical cable and the terminal device, so it is called a traction type fiber optic connector.

[0003] The cross-sectional area of ​​the pulling type optical fiber connector is relatively small. How to firmly and conveniently fix the male connector and the female connector of the pulling type optical fiber connector under the condition of relatively small cross-sectional area is an urgent problem to be solved. Some existing pulling type connectors have the end of the female connector configured to be expandable, and other components are used to fix the male connector after it is inserted. This method is inconvenient to operate and is not conducive to unlocking. Summary of the invention

[0004] The purpose of the present invention is to provide a pulling type optical fiber connector, which has special features.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A pulling optical fiber connector, comprising:

[0007] A male connector, one end of which is provided with a first ferrule structure, and the middle of the first ferrule structure can pass through the optical fiber;

[0008] The female connector is provided with a sleeve, and the sleeve is used for inserting the end of the first ferrule structure;

[0009] The female connector and the male connector have, at their opposite ends, one sleeve having a freely rotatable rotating head, and the other having a connecting head that is threadedly engaged with the rotating head, so that the female connector and the male connector can be fixed by threading the rotating head with the connecting head, so that the end of the first core structure remains stable after being inserted into the sleeve.

[0010] Among them, the connector female head is provided with an outer frame sleeve, the sleeve is located in the outer frame sleeve, a part of the end of the first core structure is inserted into the outer frame sleeve to form a fit, and the outer peripheral surface of the first core structure and the outer frame sleeve where the fit is formed is composed of planes or arc surfaces with different curvatures to limit the first core structure in the torsion direction.

[0011] The area where the outer frame sleeve cooperates with the first plug-in structure is a waist-shaped hole.

[0012] A limiting protrusion is arranged on the inner side of the outer frame sleeve, and an end of the sleeve close to the male head of the connector can abut against the side of the limiting protrusion to prevent the sleeve from falling out in the direction of the male head of the connector.

[0013] The first ferrule structure comprises a first ferrule and a first tail handle which are arranged in the axial direction and fixed to each other. The first ferrule can be inserted into the sleeve. The first tail handle is provided with an annular groove along the circumference, and the rotating head is sleeved on the groove.

[0014] Wherein, a first tail sleeve is fixed to the tail of the first tail handle, and the first tail sleeve and the first tail handle together form a groove.

[0015] The end of the outer frame sleeve is a connector, and the connector is a tubular structure with threads arranged on the inner circumference.

[0016] The female connector also includes a second ferrule structure and a second tail sleeve which are sequentially arranged along the axial direction. A portion of the second ferrule structure is fixed in the outer sleeve, and an end of the second ferrule structure is inserted into the sleeve to abut against the end of the first ferrule structure.

[0017] It also includes a traction cap, which can be covered on the end of the male head of the connector and fixed by threads, and a through hole is arranged on the traction cap.

[0018] It also includes a dust cap, which can be covered on the end of the female connector.

[0019] Beneficial effects: The present invention provides a pulling type optical fiber connector, including a male connector and a female connector, wherein a first plug-in structure is provided at one end of the male connector, and an optical fiber can be passed through the middle of the first plug-in structure; a sleeve is provided at the female connector, and the sleeve is used for inserting the end of the first plug-in structure; at the ends opposite to each other, one of the female connector and the male connector is provided with a freely rotatable rotating head, and the other is provided with a connector that is threadedly matched with the rotating head, so that the female connector and the male connector can be fixed by threading the rotating head and the connector, so that the end of the first plug-in structure remains stable after being inserted into the sleeve. In addition, since the rotating head can rotate freely, when the rotating head and the connector are tightened, it can avoid driving other parts of the optical fiber connector to rotate, thereby avoiding affecting the internal optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a connector male head with a traction cap provided by the present invention.

[0021] Figure 2 It is a cross-sectional view of the connector male head provided by the present invention.

[0022] Figure 3 It is a structural diagram of the connector male head provided by the present invention with the traction cap removed.

[0023] Figure 4 It is a structural schematic diagram of a connector female head with a dust cap provided by the present invention.

[0024] Figure 5 It is a structural diagram of the connector female head provided by the present invention with the dust cap removed.

[0025] Figure 6 It is a cross-sectional view of the connector female head provided by the present invention.

[0026] Figure 7 It is a structural schematic diagram of the combination of a connector male head and a connector female head provided by the present invention.

[0027] Figure 8 It is an exploded view of the combination of the male connector and the female connector provided by the present invention.

[0028] Fig. 9 It is a cross-sectional view of the combination of the male connector and the female connector provided by the present invention.

[0029] Fig.10 It is a structural schematic diagram of the outer frame sleeve provided by the present invention.

[0030] in:

[0031] 1-connector male head, 11-first core structure, 111-first core, 112-first tail handle, 113-first tail sleeve, 12-traction cap, 2-connector female head, 21-sleeve, 22-outer frame sleeve, 221-limiting protrusion, 222-limiting part, 23-second core structure, 231-second core, 232-second tail handle, 234-second tail sleeve, 235-spring, 236-fixed head, 24-dust cap, 31-rotating head, 32-connecting head. DETAILED DESCRIPTION

[0032] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0033] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] like Figures 1 to 10As shown, this embodiment discloses a pulling type optical fiber connector. The pulling type optical fiber connector may include a male connector 1 and a female connector 2. Figure 7 to Figure 9 The schematic diagram of the structure after the male connector 1 and the female connector 2 are combined is shown.

[0035] In this embodiment, the male connector 1 can be a component that travels with the optical cable in the pipeline, and the female connector 2 can be installed on a home networking device or a wiring box or other mechanism to form a port that cooperates with the male connector 1. In some cases, the female connector 2 can also cooperate with the male connector 1 to form an optical cable extension line, which are arranged together in the pipeline for passing the optical cable.

[0036] like Figure 1 to Figure 3 As shown, a first ferrule structure 11 is disposed at one end of the connector male head 1, and an optical fiber can pass through the middle of the first ferrule structure 11.

[0037] Specifically, the first ferrule structure 11 includes a first ferrule 111 and a first tail handle 112 which are arranged in the axial direction and fixed to each other. Both the first ferrule 111 and the first tail handle 112 have channels for the fiber core to pass through.

[0038] like Figure 4-Figure 6 As shown, the female connector 2 is provided with a sleeve 21, and the sleeve 21 is used for inserting the end of the first ferrule structure 11. The female connector 2 is provided with a second ferrule structure 23 and a second tail sleeve 234 in sequence along the axial direction, and the second ferrule structure 23 includes a second ferrule 231 and a second tail handle 232. The second ferrule 231 and the second tail handle 232 are provided with channels for the fiber core to pass through.

[0039] like Figure 7-Figure 9 As shown, when the male connector 1 and the female connector 2 are fixedly matched, the first ferrule 111 on the male connector 1 will extend into the sleeve 21 of the female connector 2, and the second ferrule 231 on the female connector 2 will be inserted from the other end of the sleeve 21 until it abuts against the first ferrule 111, so that the optical fibers of each other can be connected to each other to transmit light.

[0040] In order to fix the male connector 1 and the female connector 2 with relatively small cross-sectional areas to each other, in the present embodiment, the end of the male connector 1 is provided with a freely rotatable rotating head 31, and the female connector 2 is provided with a connecting head 32 which is threadedly matched with the rotating head 31, so that the female connector 2 and the male connector 1 can be fixed by the rotating head 31 and the connecting head 32 which are threadedly matched, so that the end of the first core structure 11 remains stable after being inserted into the sleeve 21.

[0041] This method of fixing by threading the rotating head 31 and the connector 32 can meet the requirement of a relatively small cross-sectional area of ​​the optical fiber connector, that is, the connector male head 1 and the connector female head 2 can be firmly fixed. In addition, since the rotating head 1 can rotate freely, during the process of rotating and tightening the rotating head 31 and the connector 32, the rotating head 31 will not cause other twisting to the connector male head 1, which can prevent the optical fiber from being twisted or even broken.

[0042] In this embodiment, an external thread is provided on the outside of the rotating head 31, and an internal thread is provided on the inside of the connecting head 31 to achieve the cooperation between the two. Of course, the rotating head 31 can also be provided on the female connector 2, and the connecting head 31 can be provided on the male connector 1. In addition, the connecting head 32 can be fixed or integrally provided on the male connector 1 or the female connector 2. The integral provision means that the connecting head 32 itself may not be an independent component, but a part of other components (such as an end), and the fixedly provided connecting head 32 is easy to process. However, the connecting head 32 can also be provided in a freely rotatable manner, as long as it can be connected to the rotating head 31 by threaded cooperation.

[0043] In this embodiment, specifically, the tail of the first tail handle 112 is fixed with the first tail sleeve 113, the first tail sleeve 113 and the first tail handle 112 together form a groove, the rotating head 31 is sleeved on the groove, and the rotating head 31 can rotate freely and is also restricted in the axial direction. Of course, the first tail handle 112 can also form other forms of annular grooves arranged along the circumference, which are not necessarily formed in cooperation with the first tail sleeve 113.

[0044] The female connector 2 is provided with an outer frame sleeve 22, the sleeve 21 is located in the outer frame sleeve 22, a portion of the end of the first ferrule structure 11 is inserted into the outer frame sleeve 22 to form a match, and the outer peripheral surface of the first ferrule structure 11 and the outer frame sleeve 22 at the place where the first ferrule structure 11 and the outer frame sleeve 22 form a match is composed of a plane or arc surface with different curvatures, so as to limit the first ferrule structure 11 in the torsion direction. Fig.10 As shown, the cross section of the outer peripheral surface where the first ferrule structure 11 and the outer frame sleeve 22 are matched is in the shape of a racetrack, and the area where the outer frame sleeve 22 and the first ferrule structure 11 are matched is a waist-shaped hole. This shape is conducive to processing the outer frame sleeve 22, and it is only necessary to mill out the waist-shaped hole with a milling cutter. The outer frame sleeve 22 limits the rotation of the first ferrule structure 11 through the limit portion 222.

[0045] A portion of the second ferrule structure 23 is fixed in the outer sleeve 21 , and an end portion of the second ferrule structure 23 is inserted into the sleeve 21 to abut against an end portion of the first ferrule structure 11 for light transmission.

[0046] The inner side of the outer frame sleeve 22 is provided with a limiting protrusion 221, which is an annular convex strip in this embodiment. The end of the sleeve 21 close to the connector male head 1 can abut against the side of the limiting protrusion 221 to prevent the sleeve 21 from coming out along the direction of the connector male head 1.

[0047] In this embodiment, the end of the outer frame sleeve 22 is a connector 32, and the connector 32 is a tubular structure with threads on the inner circumference, that is, as mentioned above, the connector 32 is a specific implementation in which it is integrally provided on the connector female head 2.

[0048] The second ferrule structure 23 further includes a spring 235 and a fixing head 236 arranged along the axial direction, the fixing head 236 is fixed to the second tail sleeve 234, the tail end of the second tail handle 232 is inserted into the fixing head 236, and the spring 235 is sleeved on the tail end of the second tail handle 232. The fixing head 236 is fixed to the end of the outer frame sleeve 22, so that the second tail handle 232 and the second ferrule 231 are pushed into the sleeve 21 by the elastic force of the spring, so that the second ferrule 231 and the first ferrule 111 can maintain abutment.

[0049] The traction type optical fiber connector further comprises a traction cap 12, which can be covered on the end of the connector male head 1 and fixed by thread, and a perforation is arranged on the traction cap 12. The traction rope in the perforation of the traction cap 12 drives the connector male head 1 to shuttle in the pipeline.

[0050] The pulling type optical fiber connector further comprises a dust cap 24, which can be covered on the end of the connector female head 2. When the connector female head 2 is not connected to the connector male head 1, the dust cap 24 can be used to prevent dust.

[0051] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A pulling optical fiber connector, characterized in that: include: A connector male head (1) having a first ferrule structure (11) provided at one end, wherein an optical fiber can pass through the middle of the first ferrule structure (11); A female connector (2) provided with a sleeve (21), wherein the sleeve (21) is used for inserting an end portion of the first ferrule structure (11); The female connector (2) and the male connector (1) are provided with a freely rotatable rotating head (31) at opposite ends thereof, and the other is provided with a connecting head (32) threadedly mating with the rotating head (31), so that the female connector (2) and the male connector (1) can be fixed by threading the rotating head (31) and the connecting head (32), so that the end of the first ferrule structure (11) remains stable after being inserted into the sleeve (21); The connector female head (2) is provided with an outer frame sleeve (22), the sleeve (21) is located inside the outer frame sleeve (22), a portion of the end of the first ferrule structure (11) is inserted into the outer frame sleeve (22) to form a fit, and the outer peripheral surface of the first ferrule structure (11) and the outer frame sleeve (22) at the fit is composed of planes or arc surfaces with different curvatures, so as to limit the first ferrule structure (11) in the torsion direction; The area where the outer frame sleeve (22) cooperates with the first insert core structure (11) is a waist-shaped hole; The end of the outer frame sleeve (22) is the connecting head (32), and the connecting head (32) is a tubular structure with a threaded inner surface.

2. The pulling optical fiber connector according to claim 1, characterized in that: A limiting protrusion (221) is provided on the inner side of the outer frame sleeve (22), and one end of the sleeve (21) close to the connector male head (1) can abut against the side of the limiting protrusion (221) to prevent the sleeve (21) from falling out in the direction of the connector male head (1).

3. The pulling optical fiber connector according to any one of claims 1 to 2, characterized in that: The first ferrule structure (11) comprises a first ferrule (111) and a first tail handle (112) arranged in an axial direction and fixed to each other, the first ferrule (111) being insertable into the sleeve (21), the first tail handle (112) being provided with an annular groove along a circumferential surface, and the rotating head (31) being sleeved on the groove.

4. The pulling optical fiber connector according to claim 3, characterized in that: A first tail sleeve (113) is fixed to the tail of the first tail handle (112), and the first tail sleeve (113) and the first tail handle (112) together form the groove.

5. The pulling optical fiber connector according to claim 1, characterized in that: The female connector (2) further comprises a second ferrule structure (23) and a second tail sleeve (234) which are arranged in sequence along the axial direction, a portion of the second ferrule structure (23) is fixed in the outer frame sleeve (22), and an end portion of the second ferrule structure (23) is inserted into the sleeve (21) to abut against an end portion of the first ferrule structure (11).

6. The pulling optical fiber connector according to any one of claims 1 to 2, characterized in that: It also comprises a traction cap (12), which can be covered on the end of the connector male head (1) and fixed by threads, and a through hole is provided on the traction cap (12).

7. The pulling optical fiber connector according to any one of claims 1 to 2, characterized in that: It also comprises a dust cap (24), which can be arranged on the end of the female connector (2).

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