Coupling assembly of optical fiber connector
By designing a coupling assembly that integrates the coupling body and the base in the optical fiber connector, the core tube assembly is fixed by using the limit port and the stop-retard member, the problem of axial rotation of the core tube assembly is solved and a more stable fiber connection is achieved.
Patent Information
- Application Number
- CN202311839303.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-07-01
AI Technical Summary
In the coupling assembly of existing fiber optic connectors, the core tube assembly is prone to axial rotation, resulting in unstable connections.
A coupling assembly of an optical fiber connector is designed, wherein the coupling body is integrated with the base, including a limiting port and a counter interface, the core tube assembly is loaded into the through hole through the limiting port, and is fixed by a stop-retard member and an elastic assembly, and the sleeve is located outside the base to increase structural strength.
Effectively prevent the core tube assembly from rotating axially, improve the stability and structural strength of the optical fiber connector, and avoid interruption between the coupling body and the base.
Smart Images
Figure CN120233492A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a coupling component, and more particularly to a coupling component of an optical fiber connector. Background Art
[0002] An optical fiber is a tool for light conduction. In order to connect the optical fiber to various electronic devices so that the information transmitted by it can be used by the electronic devices, a connector must be used as an intermediary between the optical fiber and the electronic device to achieve the connection purpose. The coupling component of a general optical fiber connector includes a hollow body, a ferrule assembly, a spring, a base and a sleeve. After the hexagonal stopper of the ferrule assembly and the spring are installed in the hexagonal through hole inside the hollow body, the base is installed and fixed at the side opening of the hollow body to limit the ferrule assembly and the spring. Then, the sleeve is installed outside the base. Thereby, the hexagonal stopper and the hexagonal through hole are not easily limited to each other, and the ferrule assembly is easily axially rotated. Summary of the Invention
[0003] A coupling component of an optical fiber connector provided by the present invention aims to solve the above technical problems.
[0004] An embodiment of the present invention provides a coupling component of an optical fiber connector, including a coupling body, a ferrule assembly and a sleeve. Two ends of the coupling body respectively include a plugging side and an assembling side. The coupling body has a through hole penetrating from the plugging side to the assembling side. The coupling body has a limiting port on the side surface of the plugging side, and a docking port on the side surface of the assembling side. The limiting port and the docking port communicate with the through hole. The side surface of the coupling body between the plugging side and the assembling side includes a retaining member extending outward. The coupling body includes a base portion located on the assembling side, and the coupling body and the base portion are integrally formed. The ferrule assembly includes a ferrule inserted into the through hole from the limiting port and an elastic component. The sleeve is located outside the base portion.
[0005] Preferably, the coupling body is a hollow rectangular structure, the base portion is a hollow cylindrical structure, the docking port is arranged on the base portion, and the aperture of the limiting port located on the plugging side is larger than the aperture of the docking port located on the assembling side.
[0006] Preferably, the ferrule includes a pin, a stopper and a ferrule tube. The pin and the ferrule tube are respectively located on two sides of the stopper. The pin is located at one end in the long side direction of the coupling body and corresponds to the limiting port, and the ferrule tube is located at the other end in the long side direction of the coupling body and corresponds to the docking port. The elastic component is arranged outside the ferrule tube.
[0007] Preferably, the limiting port is square, the through hole is square and has four abutting surfaces, the stopper is square and has four limiting surfaces, and each abutting surface respectively corresponds to each limiting surface.
[0008] Preferably, the elastic component contacts the stopper at one end of the coupling body in the long side direction, the coupling body includes a stopper wall located in the through hole, and the elastic component contacts the stopper wall at the other end of the coupling body in the long side direction.
[0009] Preferably, the coupling body includes a docking block located in the through hole, the core tube includes a buckle block located on the outer annular surface of the connecting tube, and the docking block contacts the buckle block.
[0010] Preferably, the buckle block has flat surfaces on two opposite sides of a horizontal line, and the buckle block has curved surfaces on two opposite sides of a vertical line.
[0011] Preferably, the base includes hooks on two sides of a vertical line, and each hook protrudes in opposite directions. The sleeve has a through hole and an annular groove located on the inner wall of the through hole, and the hook is located in the annular groove.
[0012] Preferably, the coupling assembly further comprises a cover, and the cover is located at the limiting opening.
[0013] Preferably, the two ends of the retaining member respectively include a fixed end and a free end, the fixed end is located on the plug-in side and one end on the side of the coupling body, and the free end is located on the assembly side and the other end on the side of the coupling body, and the fixed end to the free end extends in an inclined manner in a direction away from the side of the coupling body.
[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The invention provides an optical fiber connector with a coupling body and a base as one body, and the optical fiber connector comprises a core tube component which is installed in a through hole through a limiting opening of the coupling body.
[0015] The coupling body and the base are integrated to improve the structural strength and avoid fracture between the coupling body and the base. The core tube component is inserted into the through hole through the limiting opening of the coupling body, so that the core tube component is stably fixed in the through hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the appearance of a coupling component according to some embodiments is shown.
[0017] Figure 2 FIG. 4 is an exploded schematic diagram of the front side of a coupling component according to some embodiments.
[0018] Figure 3 A three-dimensional cross-sectional schematic diagram of a coupling body according to some embodiments is shown.
[0019] Figure 4 A schematic diagram of the appearance of a core tube according to some embodiments is shown.
[0020] Explanation of symbols 100: Coupling components 1: Coupling body 1a: Plug side 1b: Assembly side 10:Through hole 101: abutment surface 11: Rectangular structure 12: Limit port 13: Docking port 14: Stop return piece 141: Fixed end 142: Free end 15: Base 15a: Vertical Line 151: Cylindrical structure 152:Hook 16: retaining wall 17: Docking block 2: Core tube assembly 21: Core tube 211: Pin 212: Stopper 2121: Limiting surface 213: Takeover 217: buckle block 217a: Horizontal line 217b: Vertical line 2171: Plane 2172:Curved 22: Elastic components 3: Casing 31:Piercing 32: Annular groove 4: Lid X: First axis Y: Second axis Z: The third axis. DETAILED DESCRIPTION
[0021] Reference Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the appearance of the coupling component 100, Figure 2 The figure is a schematic diagram of the front of the coupling component 100; in some embodiments, the coupling component 100 is applied to a fiber optic connector, which is suitable for equipment in high and low temperature environments such as telecommunications, indoor wiring, industry, military, aviation, aerospace or medical industries, and can be used in data centers, 5G or cloud computing equipment. The fiber optic connector is a high-density fiber optic connection device that provides high-speed signal transmission. The fiber optic connector is used in fiber optic communication products, has a fiber optic socket, and accommodates the core wire of the optical fiber line (for transmission and reception). The coupling component 100 includes a coupling body 1, a core tube component 2 and a sleeve 3.
[0022] Reference Figure 2 And Figure 3 , Figure 3 is an exploded view of the back side of the coupling component 100. Two ends of the coupling body 1 respectively include a plugging side 1a and an assembling side 1b. The plugging side 1a is located on the left side of the coupling body 1 as shown in Figure 2 , and the assembling side 1b is located on the right side of the coupling body 1 as shown in Figure 2 . The coupling body 1 has a through hole 10 penetrating from the plugging side 1a to the assembling side 1b. The coupling body 1 has a limiting port 12 on the side surface of the plugging side 1a, and the coupling body 1 has a mating port 13 on the side surface of the assembling side 1b. The limiting port 12 and the mating port 13 communicate with the through hole 10. The side surface of the coupling body 1 between the plugging side 1a and the assembling side 1b (such as the upper surface of the coupling body 1 shown in Figure 2 ) includes a retaining member 14 extending outward, and the coupling body 1 includes a base portion 15 located on the assembling side 1b. The coupling body 1 and the base portion 15 are integral.
[0023] For a clearer description of this case, in the schematic diagrams provided in this case, the first axis X is the X axis of a three-dimensional coordinate system, the second axis Y is the Y axis of the three-dimensional coordinate system, and the third axis Z is the Z axis of the three-dimensional coordinate system.
[0024] The coupling body 1 is a hollow rectangular structure 11. The coupling body 1 extends in the direction of the third axis Z as shown in Figure 2 and has opposite four side surfaces enclosing a rectangle. The coupling body 1 extends in the direction of the first axis X and has opposite two side surfaces. The two side surfaces in the direction of the first axis X are respectively connected to two sides of the four side surfaces in the direction of the third axis Z. The two side surfaces in the direction of the first axis X are the side surfaces in the short side direction, and the four side surfaces in the direction of the third axis Z are the side surfaces in the long side direction. The limiting port 12 is located on the side surface in the short side direction on the left side as shown in Figure 2 , and the mating port 13 is formed on the left side surface of the base portion 15 as shown in Figure 3 . The base portion 15 of the coupling body 1 is a hollow cylindrical structure 151, and the base portion 15 protrudes along the third axis Z from the side surface in the short side direction on the left side as shown in Figure 3 .
[0025] In some embodiments, two ends of the retaining member 14 respectively include a fixed end 141 and a free end 142. The fixed end 141 is located at one end of the side surface of the coupling body 1 (such as the left side of the upper surface of the coupling body 1 shown in Figure 2 ), and the free end 142 is located at the other end of the side surface of the coupling body 1 (such as Figure 2The right side of the coupling body 1 shown in the figure) is extended from the fixed end 141 to the free end 142 in an inclined manner along the -third axis Z direction and toward the +second axis Y direction, that is, extending in a direction away from the side of the coupling body 1. The side of the coupling body 1 includes a stopper 14 extending toward the outside, and the so-called outside refers to the height direction perpendicular to the long side direction of the upper surface of the coupling body 1 (that is, the +second axis Y direction). Figure 1 Starting from the opposite end of the coupling body 1 (the left side of the coupling body 1), along the -third axis Z direction toward the other end of the coupling body 1 (the right side of the coupling body 1) and extending upward toward the +second axis Y direction, the angle between the stop member 14 and the upper surface of the coupling body 1 is about 30 degrees.
[0026] When the core tube assembly 2 is assembled with the coupling body 1, the core tube assembly 2 is inserted into the through hole 10 through the limiting opening 12, so that the elastic assembly 22 is limited in the through hole 10 of the coupling body 1, and then the sleeve 3 is sleeved on the outside of the base 15 to complete the semi-finished product (see the figures). In addition, a cover 4 can be installed on the coupling body 1, so that the cover 4 is fixed to the limiting opening 12 and is used to prevent dust and protect the core tube assembly 2.
[0027] In some embodiments, the core tube 21 includes a pin 211, a stopper 212, and a pipe 213. The pin 211 and the pipe 213 are as shown in FIG. Figure 2 As shown, the two sides of the stopper 212 are arranged along the third axis Z direction. When the core tube 21 and the elastic component 22 are installed in the through hole 10 of the coupling body 1, the pin 211 is located at one end of the long side direction of the coupling body 1 and corresponds to the limit opening 12, and the pipe 213 is located at the other end of the long side direction of the coupling body 1 and corresponds to the docking port 13, and the elastic component 22 is sleeved on the outside of the pipe 213 (refer to the figures). In some embodiments, the pin 211 is used to cover the optical fiber (core wire) and make the optical fiber cut flush with the core hole of the pin 211.
[0028] Reference Figures 2 to 3 , Figure 3 is a three-dimensional cross-sectional diagram of the coupling body 1. In some embodiments, the apertures of the limiting opening 12 and the docking opening 13 of the coupling body 1 are different, that is, the aperture of the limiting opening 12 on the plugging side 1a is larger than the aperture of the docking opening 13 on the assembly side 1b. Figure 2 The limiting opening 12 of the coupling body 1 is a square when viewed from the direction of the third axis Z, and the through hole 10 in the coupling body 1 is a square, and the through hole 10 has four relative abutment surfaces 101 extending along the direction of the third axis Z and forming a rectangle, and there are rounded corners between the four abutment surfaces 101. Figure 3 When viewed from the + third axis Z direction, the docking port 13 of the coupling body 1 is circular.
[0029] In some embodiments,Figure 2 When viewed from the -Z direction of the third axis, the stopper 212 is square, and there are four limiting surfaces 2121 on the outside of the stopper 212. The four limiting surfaces 2121 respectively have two opposite limiting surfaces 2121 arranged along the X direction of the first axis and two opposite limiting surfaces 2121 arranged along the Y direction of the second axis. There are rounded corners between the four limiting surfaces 2121.
[0030] When the core tube 21 is installed in the through hole 10 of the coupling body 1, each limiting surface 2121 of the stopper 212 of the core tube 21 respectively corresponds to each abutting surface 101 on the inner wall of the through hole 10, so that the four abutting surfaces 101 and the four limiting surfaces 2121 abut against each other face to face for limiting, and the core tube 21 is limited in the through hole 10 to restrict the freedom of axial rotation of the core tube 21.
[0031] In some embodiments, when the elastic component 22 is installed in the through hole 10 of the coupling body 1, one end of the elastic component 22 in the direction corresponding to the long side of the coupling body 1 contacts the stopper 212, and the coupling body 1 includes a blocking wall 16 located in the through hole 10. The other end of the elastic component 22 in the direction corresponding to the long side of the coupling body 1 contacts the blocking wall 16 (refer to the figures shown).
[0032] When the core tube 21 is in use for docking, the pin 211 of the core tube 21 moves to the right in the -Z direction of the third axis as shown in Figure 2 shown. The stopper 212 will squeeze one end of the elastic component 22, so that the elastic component 22 is squeezed into a compressed state, and the elastic force of the elastic component 22 is used to push the pin 211 of the core tube 21 to move to the left in the +Z direction of the third axis as shown in Figure 2 shown.
[0033] Referring to Figures 3 to 4 . As described above, to prevent the pin 211 of the core tube 21 from being ejected out of the limiting port 12, in some embodiments, the coupling body 1 includes a docking block 17 located in the through hole 10. When viewed from the -Z direction, the docking block 17 is generally a circular convex block. The core tube 21 includes a buckling block 217 located on the outer ring surface of the connecting tube 213. When viewed from the -Z direction, the buckling block 217 is generally a circular convex block. The docking block 17 and the buckling block 217 are hook-shaped structures in opposite directions, and the docking block 17 and the buckling block 217 have inclined surfaces on the opposite sides and straight surfaces on the opposite sides. When the core tube 21 is installed in the through hole 10 of the coupling body 1, the buckling block 217 on the outer ring surface of the connecting tube 213 will buckle the docking block 17, that is, the straight surface of the buckling block 217 will buckle the straight surface of the docking block 17, so that the buckling block 217 is blocked by the docking block 17, restricting the freedom of the core tube 21 to move towards the limiting port 12, and preventing the pin 211 of the core tube 21 from being ejected out of the limiting port 12 to the left in the +Z direction as shown in Figure 2 shown.
[0034] Referring toFigure 2 , in some embodiments, the fastening block 217 has flat surfaces 2171 on opposite sides of the horizontal line 217a in the X-axis direction, and has arc surfaces 2172 on opposite sides of the vertical line 217b in the Y-axis direction. When the core tube 21 is installed in the through hole 10 of the coupling body 1, the arc surfaces 2172 of the fastening block 217 facilitate guiding the fastening block 217 along the Figure 2 third axis Z direction as shown from one side of the docking block 17 to the other side of the docking block 17.
[0035] In some embodiments, the base 15 of the coupling body 1 Figure 3 as shown includes spaced hooks 152 on both sides of the vertical line 15a in the Y-axis direction. Each hook 152 projects outward in opposite directions, meaning that each hook 152 projects outward along the +Y-axis direction and the -Y-axis direction respectively on the vertical line 15a. In some embodiments, the sleeve 3 has a through hole 31 and an annular groove 32 on the inner wall of the through hole 31. When the sleeve 3 Figure 2 is sleeved outside the base 15 along the third axis Z direction as shown, each hook 152 is squeezed by the inner wall of the sleeve 3, causing each hook 152 to move closer to each other and facilitating installation into the annular groove 32 of the sleeve 3. When each hook 152 is placed in the annular groove 32 of the sleeve 3, each hook 152 pops out in opposite directions away from each other due to the enlarged space of the annular groove 32, causing each hook 152 to return to its original position, and each hook 152 is clamped on the inner wall of the annular groove 32, limiting the sleeve 3 outside the base 15.
[0036] In summary, according to some embodiments, the coupling body and the base are integrated to improve the structural strength and prevent breakage between the coupling body and the base. The core tube assembly is inserted into the through hole through the limiting port of the coupling body, so that the core tube assembly is stably positioned in the through hole.
Claims
1. A coupling component of an optical fiber connector, characterized in that : A coupling body, with one plugging side and one assembling side at two ends respectively. The coupling body has a through hole penetrating from the plugging side to the assembling side. The coupling body has a limiting port on the side surface of the plugging side, and a pair of interfaces on the side surface of the assembling side. The limiting port and the pair of interfaces communicate with the through hole. The side surface of the coupling body between the plugging side and the assembling side includes a retaining member extending outward. The coupling body includes a base part located on the assembling side, and the coupling body and the base part are integrated. A core tube assembly, including a core tube and an elastic component inserted into the through hole from the limiting port. A sleeve, located outside the base part.
2. The coupling component of the fiber optic connector according to claim 1, characterized in that : The coupling body is a hollow rectangular structure, and the base part is a hollow cylindrical structure. The pair of interfaces are arranged on the base part. The aperture of the limiting port on the plugging side is larger than the aperture of the pair of interfaces on the assembling side.
3. The coupling component of the fiber optic connector according to claim 2, characterized in that : The core tube includes a pin, a stop block and a connecting tube. The pin and the connecting tube are respectively located on two sides of the stop block. The pin is located at one end in the long side direction of the coupling body and corresponds to the limiting port, and the connecting tube is located at the other end in the long side direction of the coupling body and corresponds to the pair of interfaces. The elastic component is arranged outside the connecting tube.
4. The coupling component of the fiber optic connector according to claim 3, wherein : The limiting port is square, the through hole is square and has four abutting surfaces, and the stop block is square and has four limiting surfaces. Each of the abutting surfaces corresponds to each of the limiting surfaces.
5. The coupling component of the fiber optic connector according to claim 3, characterized in that : One end of the elastic component in the long side direction of the coupling body contacts the stop block. The coupling body includes a blocking wall located in the through hole. The other end of the elastic component in the long side direction of the coupling body contacts the blocking wall.
6. The coupling component of the fiber optic connector according to claim 3, characterized in that : The coupling body includes a docking block located in the through hole. The core tube includes a buckling block located on the outer ring surface of the connecting tube. The docking block contacts the buckling block.
7. The coupling component of the fiber optic connector according to claim 6, characterized in that : The buckling block has a flat surface on two opposite sides of a horizontal line, and an arc surface on two opposite sides of a vertical line.
8. The coupling component of the fiber optic connector according to claim 1, characterized in that : Two sides of the base part on a vertical line include a hook part. Each of the hook parts protrudes in the opposite direction. The sleeve has a through hole and an annular groove located on the inner wall of the through hole. The hook part is located in the annular groove.
9. The coupling component of the fiber optic connector according to claim 1, characterized in that : It further includes a cover, and the cover is located at the limiting port.
10. The coupling component of the fiber optic connector according to claim 1, characterized in that : Two ends of the retaining member respectively include a fixed end and a free end. The fixed end is located on the plugging side and at one end of the side surface of the coupling body, and the free end is located on the assembling side and at the other end of the side surface of the coupling body. The fixed end to the free end extends in an inclined manner away from the side surface of the coupling body.