A small optical fiber connector

Abstract

The present invention discloses a small optical fiber connector, including an optical fiber, a pusher, an elastic reset member, a sleeve, a positioning key, an adapter housing, a sleeve and a pin component. A through cavity structure is formed inside the adapter housing, the sleeve is installed in the adapter housing to form an adapter, the elastic reset member is installed between the pusher and the positioning key and is sleeved outside the optical fiber; a positioning protrusion is formed on the positioning key, and a positioning groove is provided on the end face of the adapter housing, and the positioning groove is matched with the positioning protrusion. The connector has a small and compact structure. By forming a positioning protrusion on the positioning key, and providing a positioning groove on the end face of the adapter housing, and matching the positioning groove with the positioning protrusion, the pin and the optical fiber can be effectively fixed, and at the same time, the pin and the optical fiber can be limited from rotating in the adapter, so that the optical fiber can be docked at a fixed angle without causing energy loss due to angle deviation caused by rotation.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fiber communication, in particular to a small optical fiber connector. Background Art

[0002] In the current technology of optical fiber communication, standard optical fiber connectors are mostly used in optical fiber interconnection scenarios in narrow spaces such as motherboards, such as LC connectors specified in IEC 61754-20. This type of standard connector technology is mature and widely used, but it is not specially designed for onboard or narrow use environments. It has many problems such as large connector size, numerous installation and removal steps, inconvenient operation, and high space requirements.

[0003] In order to solve the above technical problems, the U.S. patent with publication number US6616343B2 discloses The optical fiber positioning member, which is small in size and can be used for on-board connection. However, it adopts a spring clamping mechanism. Due to the unstable elastic force, the reliability of the connector is not high. At the same time, it lacks an angle holding structure and does not support angle grinding for round ferrules, which has great limitations. Summary of the invention

[0004] In order to overcome the defects in the above-mentioned prior art, the purpose of the present invention is to provide a small optical fiber connector, which has a small and compact structure, is convenient and practical, can be used in narrow environments such as boards, and can ensure the use effect and enhance the user experience, which is conducive to the promotion and application of the above-mentioned small optical fiber connector in the market.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: a small optical fiber connector, including an optical fiber, a pushing member, an elastic reset member, a sleeve, a positioning key, an adapter housing, a sleeve and a pin component, a through cavity structure is formed inside the adapter housing, the sleeve is installed in the adapter housing to form an adapter, the elastic reset member is installed between the pushing member and the positioning key and is sleeved on the outside of the optical fiber; a positioning protrusion is formed on the positioning key, and a positioning groove is formed on the end face of the adapter housing, and the positioning groove is adapted to the positioning protrusion.

[0006] As a preferred solution of the present invention, a locking structure is provided between the propulsion member and the adapter housing.

[0007] As a preferred solution of the present invention, the locking structure is one of a threaded structure, a snap-fit ​​structure, a protrusion structure or a groove structure.

[0008] As a preferred solution of the present invention, a stop step is formed on the circumferential surface of the cylindrical thruster, and a locking groove matched with the stop step is formed inside the adapter housing, and the locking between the thruster and the adapter is achieved by embedding the stop step in the locking groove.

[0009] As a preferred solution of the present invention, the pin component includes a pin and a flange, the flange is a polygonal structure, and a polygonal groove matching the flange is formed inside the positioning key.

[0010] As a preferred solution of the present invention, the adapter housing includes a first housing and a second housing, and the first housing and the second housing can be opened and closed.

[0011] As a preferred solution of the present invention, the sleeve is installed in the middle of the adapter housing cavity.

[0012] As a preferred solution of the present invention, the pushing member, the elastic reset member, the sleeve and the positioning key are assembled to form a connector as a whole.

[0013] As a preferred solution of the present invention, the sleeve is riveted onto the pin component, and the tail of the sleeve is riveted outward to form an outward riveted portion that matches the stop step.

[0014] As a preferred solution of the present invention, the elastic return member is a spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: a small optical fiber connector in the present invention has a small and compact structure. A positioning protrusion is formed on the positioning key, a positioning groove is opened on the end face of the adapter shell, and the positioning groove and the positioning protrusion are matched to each other. This can effectively fix the pin and the optical fiber, and at the same time limit the rotation of the pin and the optical fiber in the adapter, so that the optical fiber can be docked at a fixed angle without causing energy loss due to angle deviation caused by rotation, thereby ensuring the use effect, enhancing the user experience, and being conducive to the promotion and application of the above-mentioned small optical fiber connector in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a small optical fiber connector in an embodiment;

[0017] Figure 2 is a structural cross-sectional view of a small optical fiber connector in an embodiment;

[0018] Figure 3 is a schematic structural diagram of a positioning key in a small optical fiber connector in an embodiment;

[0019] Figure 4is a schematic structural diagram of a pusher in a small optical fiber connector in an embodiment;

[0020] Figure 5 is a schematic structural diagram of an adapter housing in a small optical fiber connector in an embodiment;

[0021] Figure 6 is a schematic diagram of the internal structure of an adapter housing in a small optical fiber connector in an embodiment;

[0022] Figure 7 is a schematic structural diagram of a pin component in a small optical fiber connector in an embodiment;

[0023] Figure 8 It is a schematic diagram of the connection status of a small optical fiber connector in an embodiment.

[0024] Figure numerals: 1, optical fiber; 2, pushing member; 20, stop step; 3, elastic return member; 4, sleeve; 40, outward-turned rivet portion; 5, positioning key; 50, polygonal groove; 51, positioning protrusion; 6, adapter housing; 60, positioning groove; 61, sleeve mounting position; 62, locking slot; 63, first housing; 64, second housing; 7, sleeve; 8, pin component; 80, pin; 81, flange; A, riveting point. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Example: Figures 1 to 8 As shown, a small optical fiber connector includes an optical fiber 1, a pusher 2, an elastic reset member 3, a sleeve 4, a positioning key 5, an adapter housing 6, a sleeve 7 and a pin component 8. A through cavity structure is formed inside the adapter housing 6, and the sleeve 7 is installed in the adapter housing 6 to form an adapter. The elastic reset member 3 is installed between the pusher 2 and the positioning key 5 and sleeved outside the optical fiber 1. The pusher 2, the sleeve 4 and the positioning key 5 are all sleeved outside the optical fiber 1. In order to effectively fix the pin 80 and the optical fiber 1, and at the same time limit the rotation of the pin 80 and the optical fiber 1 in the adapter, so that the optical fiber 1 can be docked at a fixed angle without causing energy loss due to angle deviation caused by rotation, ensuring the use effect and enhancing the user's experience, a positioning protrusion 51 is formed on the positioning key 5, and a positioning groove 60 is provided on the end surface of the adapter housing 6, and the positioning groove 60 is adapted to the positioning protrusion 51.

[0027] In order to further achieve a fixed connection between the adapter and the above-mentioned pusher 2 and ensure the stability of the connector during use, the above-mentioned adapter is also provided with a locking structure cooperating with the pusher 2 near the end face. The above-mentioned locking structure is one of a threaded structure, a snap structure, a protrusion structure or a groove structure, and can also be other locking structures, but is not limited to this.

[0028] The locking structure in this embodiment is a raised structure, in which a stop step 20 is formed on the circumferential surface of the cylindrical thruster 2. There are multiple stop steps 20, which are evenly distributed along the circumferential surface of the thruster 2. A locking groove 62 matched with the stop step 20 is formed inside the adapter housing 6. The stop step 20 is embedded in the locking groove 62 to achieve locking between the thruster 2 and the adapter to prevent rotation.

[0029] The pin component 8 includes a pin 80 and a flange 81. The flange 81 is a polygonal structure. A polygonal groove 50 matching the flange 81 is formed inside the positioning key 5 to fix the pin component 8 in the positioning key 5 and prevent the pin 80 from rotating.

[0030] In order to facilitate installation and reduce the difficulty of operation, the above-mentioned adapter shell 6 is configured to include a first shell 63 and a second shell 64. The above-mentioned first shell 63 and the above-mentioned second shell 64 can be opened and closed. The sleeve 7 is inserted in the open and closed state, and then the above-mentioned first shell 63 and the above-mentioned second shell 64 are closed and fixed.

[0031] The sleeve 7 is installed at the sleeve installation position 61 in the middle of the cavity of the adapter housing 6. The sleeve 7 is used to keep the central axes of the two pins 80 on both sides of the adapter on the same straight line, ensuring that the light wave propagates along the axial straight line, reducing the light energy loss, and achieving high-reliability and stable signal transmission. Installing the sleeve 7 in the middle of the cavity of the adapter housing 6 can also further facilitate the close docking of the optical fibers 1 on both sides of the adapter.

[0032] The elastic reset member 3 can be a spring with a simple structure and convenient use. The spring provides elastic force so that the pins 80 at both ends are tightly docked inside the adapter, so that the optical fiber 1 inside the pins 80 is tightly docked, realizing the continuous transmission of light energy and reducing energy loss. The pusher 2, spring, sleeve 4, and positioning key 5 are sleeved on the optical fiber 1 and assembled to form the connector as a whole. The pusher 2 pushes the spring, sleeve 4, positioning key 5, and pin component 8 into the adapter. After compressing the spring, the stop step 20 on the outer periphery of the pusher 2 cooperates with the locking slot 62 near the end face of the adapter to lock and prevent the connector from falling out of the adapter.

[0033] The sleeve 4 is riveted onto the above-mentioned pin component 8 by performing a riveting operation at the riveting position A, and the tail of the above-mentioned sleeve 4 is riveted outward to form an outward riveted portion 40 that cooperates with the above-mentioned stop step 20 to prevent the propulsion member 2 from slipping back.

[0034] In this embodiment, a small optical fiber connector is provided. The optical fiber 1 is assembled with the pin component 8, the pusher 2, the spring, the sleeve 4, and the positioning key 5 to form a connector as a whole. The optical fiber 1 is firmly bonded to the pin component 8, and the adapter housing 6 and the sleeve 7 are assembled to form an adapter. The positioning key 5 is sleeved on the pin component 8, and its polygonal inner cavity is matched and fixed with the polygonal flange 81 of the pin component 8. The sleeve 4 is fixed to the pin component 8 by riveting or bonding, and the tail of the sleeve 4 is riveted outward to prevent the pusher 2 from sliding. The pusher 2 pushes the spring to provide elastic force to the pin component 8, so that when the connector is docked in the adapter, the end face of the pin 80 can be tightly docked. During the process of inserting the connector into the adapter, the positioning key 5 cooperates with the slot of the adapter to ensure that the pin component 8 cannot rotate; after being inserted into place, the stop step 20 on the outer periphery of the pusher 2 cooperates with the locking card slot 62 of the adapter to achieve the locking and fixing of the connector, thereby ensuring that the connection is in place.

[0035] A small optical fiber connector in the present embodiment has a small and compact structure. A positioning protrusion 51 is formed on the positioning key 5, and a positioning groove 60 is opened on the end face of the adapter shell 6. The positioning groove 60 and the positioning protrusion 51 are matched to each other, which can effectively fix the pin 80 and the optical fiber 1. At the same time, the rotation of the pin 80 and the optical fiber 1 in the adapter can be limited, so that the optical fiber 1 can be connected at a fixed angle without causing energy loss due to angle deviation caused by rotation, thereby ensuring the use effect, enhancing the user experience, and facilitating the promotion and application of the above-mentioned small optical fiber connector in the market.

[0036] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0037] Although this article uses the following terms more frequently: 1, optical fiber; 2, pusher; 20, stop step; 3, elastic reset member; 4, sleeve; 40, outward riveted portion; 5, positioning key; 50, polygonal groove; 51, positioning protrusion; 6, adapter housing; 60, positioning groove; 61, sleeve installation position; 62, locking slot; 63, first housing; 64, second housing; 7, sleeve; 8, pin component; 80, pin; 81, flange; A, riveting position, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A small optical fiber connector, characterized in that: The optical fiber (1) comprises an optical fiber (1), a pushing member (2), an elastic reset member (3), a sleeve (4), a positioning key (5), an adapter housing (6), a sleeve (7) and a pin component (8); a through cavity structure is formed inside the adapter housing (6); the sleeve (7) is installed in the adapter housing (6) to form an adapter; the elastic reset member (3) is installed between the pushing member (2) and the positioning key (5) and is sleeved outside the optical fiber (1); the pushing member (2), the sleeve (4) and the positioning key (5) are all sleeved outside the optical fiber (1); a positioning protrusion (51) is formed on the positioning key (5); a positioning groove (60) is provided on the end surface of the adapter housing (6); the positioning groove (60) is matched with the positioning protrusion (51); The adapter is also provided with a locking structure cooperating with the pusher (2) near the end surface, wherein a stop step (20) is formed on the circumferential surface of the cylindrical pusher (2), wherein the stop steps (20) are multiple and are equidistantly distributed along the circumferential surface of the pusher (2), and a locking groove (62) matching the stop step (20) is formed inside the adapter housing (6), and the locking between the pusher (2) and the adapter is achieved by embedding the stop step (20) in the locking groove (62); the pin component (8) comprises a pin (80) and a flange (81), wherein the flange (81) is a polygonal structure, and a polygonal groove (50) matching the flange (81) is formed inside the positioning key (5), thereby fixing the pin component (8) inside the positioning key (5) and preventing the pin (80) from rotating.

2. A small optical fiber connector according to claim 1, characterized in that: The locking structure is one of a threaded structure, a snap-fit ​​structure, a protrusion structure or a groove structure.

3. A small optical fiber connector according to claim 1, characterized in that: The adapter housing (6) comprises a first housing (63) and a second housing (64), and the first housing (63) and the second housing (64) can be opened and closed.

4. A small optical fiber connector according to claim 3, characterized in that: The sleeve (7) is installed in the middle of the cavity of the adapter housing (6).

5. A small optical fiber connector according to claim 4, characterized in that: The pushing member (2), the elastic reset member (3), the sleeve (4) and the positioning key (5) are assembled to form a connector as a whole.

6. A small optical fiber connector according to claim 5, characterized in that: The sleeve (4) is riveted onto the pin component (8), and the tail of the sleeve (4) is riveted outward to form an outward riveted portion (40) that matches the stop step (20).

7. A small optical fiber connector according to claim 6, characterized in that: The elastic reset element (3) is a spring.

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