Captive fastener system

Abstract

A captive fastener system and a method for installing captive fasteners are presented. [Solution] The captive fastener system includes an expandable opening having an initial diameter connected to a channel, and a channel. The channel has an inner diameter larger than the initial diameter and an outlet diameter configured to hold the fastener head inside the channel.

Description

Technical Field

[0005] , ,

[0006] ,

[0001] Cross - Reference to Related Applications

[0001] This application is related to the following U.S. patent application entitled "Manifold for Connecting Corrugated Conduit" (Serial No. 18 / 890,160, Attorney Docket No. 24 - 0492 - US - NP), filed on the same day as this application and assigned to the same assignee, which is hereby incorporated by reference in its entirety.

[0002]

[0002] The present disclosure broadly relates to connecting structures, and more particularly to a captive fastener system for joining structures. [[ID=十三]]

Background Art

[0003]

[0003] Loose fasteners can introduce foreign object debris (FOD) during assembly or maintenance. Foreign object debris (FOD) can have an undesirable impact on structures or personnel.

[0004]

[0004] Therefore, it would be desirable to have methods and apparatuses that address at least some of the above - mentioned problems, as well as other possible problems. For example, it would be desirable to present methods and apparatuses for securing fasteners within a structure.

Summary of the Invention

[0005]

[0005] One embodiment of the present disclosure provides a captive fastener system. The captive fastener system includes an expandable aperture having an initial diameter connected to a channel, and the channel. The channel has an inner diameter larger than the initial diameter and an exit diameter configured to hold the head of the fastener inside the channel.

[0006]

[0006] One embodiment of the present disclosure provides a method for installing a captive fastener. The shank of the fastener is positioned in a channel of a structure through an expandable opening. The head of the fastener is pressed through the expandable opening. The head of the fastener is held in place within the channel by the features of the channel.

[0007]

[0007] One embodiment of the present disclosure provides a captive fastener system. The captive fastener system includes a fastener having a head positioned within a channel, and a channel. The channel has an expandable opening configured to allow the head of the fastener to enter and restrict the exit of the head of the fastener, and an exit diameter configured to allow the shaft of the fastener to extend through the exit diameter and prevent the head of the fastener from exiting.

[0008]

[0008] These features and functions may be implemented individually in various embodiments of the present disclosure, or they may be combined in yet another embodiment, further details of which can be understood by referring to the following description and drawings.

[0009]

[0009] Novel features that may be considered characteristics of exemplary embodiments are specified in the accompanying claims. However, exemplary embodiments and preferred modes of use, further purposes and their characteristics will be best understood by reading the following detailed description of exemplary embodiments of this disclosure with reference to the accompanying drawings. [Brief explanation of the drawing]

[0010] [Figure 1]

[0010] This is a diagram of an aircraft according to an exemplary embodiment. [Figure 2]

[0011] This is a block diagram of a manufacturing environment according to one exemplary embodiment. [Figure 3]

[0012] This is a diagram of a fiber extending through a corrugated pipe and manifold according to an exemplary embodiment. [Figure 4]

[0013] This is an isometric view of a manifold and adapter according to one exemplary embodiment. [Figure 5]

[0014] This is a partially exploded side view of a manifold and adapter according to an exemplary embodiment. [Figure 6]

[0015] This is an exploded isometric view of a manifold and adapter according to one exemplary embodiment. [Figure 7]

[0016] This is a side view of a plurality of adapters according to an exemplary embodiment. [Figure 8]

[0017] This is a bottom view of a manifold having an anti-rotation feature according to an exemplary embodiment. [Figure 9]

[0018] This is an exploded isometric view of a manifold and adapter according to one exemplary embodiment. [Figure 10]

[0019] This is a side view of a fastener before it is installed as a captive fastener according to an exemplary embodiment. [Figure 11]

[0020] This is a cross-sectional view of a fastener before it is installed as a captive fastener in a channel according to an exemplary embodiment. [Figure 12]

[0021] This is a cross-sectional view of a captive fastener in a channel according to an exemplary embodiment. [Figure 13]

[0022] This is a diagram illustrating the structure of a captive fastener located within a channel according to an exemplary embodiment. [Figure 14]

[0023] This is a block diagram of a manufacturing environment according to one exemplary embodiment. [Figure 15]

[0024] This is a flowchart illustrating a method for managing fibers according to one exemplary embodiment. [Figure 16]

[0025] This is a flowchart illustrating a method for installing a captive fastener according to one exemplary embodiment. [Figure 17]

[0026] A diagram of an aircraft manufacturing and maintenance method in the form of a block diagram according to an exemplary embodiment. [Figure 18]

[0027] A diagram of an aircraft in the form of a block diagram in which an exemplary embodiment can be implemented. **DETAILED DESCRIPTION OF THE INVENTION**

[0011]

[0028] Referring now to FIG. 1, a diagram of an aircraft according to an exemplary embodiment is shown. Aircraft 100 has wings 102 and 104 attached to fuselage 106. Aircraft 100 includes engines 108 attached to wing 102 and engine 110 attached to wing 104.

[0012]

[0029] Fuselage 106 has a tail 112. Horizontal stabilizers 114, 116, and vertical stabilizer 118 are attached to tail 112 of fuselage 106.

[0013]

[0030] Aircraft 100 is an example of an aircraft that may have managed fibers. In some exemplary embodiments, multiple systems of aircraft 100 may be joined together using captive fastener systems.

[0014]

[0031] Referring now to FIG. 2, a block diagram of a manufacturing environment according to an exemplary embodiment is shown. Fiber management system 201 may be generated within manufacturing environment 200. Fiber management system 201 may be utilized within manufacturing environment 200.

[0015]

[0032] Manifold 202 is configured to connect corrugated pipes. In this exemplary embodiment, manifold 202 connects several corrugated pipes 228 and several corrugated pipes 230. Manifold 202 includes a first half 204, a second half 206 detachably connected to the first half 204 to form a space 207 within manifold 202, a first number of openings 211 at the first end 208 for accessing the space 207, and a second number of openings 213 at the second end 210 for accessing the space 207. Removing the first half 204 from the second half 206 separates each of the first openings 211 and each of the second number of openings 213.

[0016]

[0033] In this exemplary embodiment, a first number of openings 211 has a different number of openings than a second number of openings 213. The number of openings at each end of the first end 208 and the second end 210 corresponds to the number of corrugated pipes connected to each of the first end 208 and the second end 210, respectively. In this exemplary embodiment, a first number of openings 211 includes two openings (openings 212 and 214). In this exemplary embodiment, a second number of openings 213 includes one opening (opening 216). In this exemplary embodiment, several corrugated pipes 228 connected to the first end 208 of the manifold 202 include two corrugated pipes (corrugated pipes 232 and 234). In this exemplary embodiment, several corrugated pipes 230 connected to the second end 210 of the manifold 202 include one corrugated pipe (corrugated pipe 236). In this exemplary embodiment, the manifold 202 may be described as a 2:1 manifold.

[0017]

[0034] The first number of openings 211 are provided with a locking feature configured to hold an adapter. In this exemplary embodiment, opening 212 is provided with a locking 258, and opening 214 is provided with a locking feature 262. Locking feature 258 is configured to hold an adapter 222. Locking feature 258 interacts with locking feature 240 to hold the adapter 222. Locking features 258 and 240 are non-screwed. Locking feature 262 is configured to hold an adapter 224. Locking feature 262 interacts with locking feature 244 to hold the adapter 224. Locking features 262 and 244 are non-screwed.

[0018]

[0035] A second number of openings 213 includes a locking feature configured to hold the adapter. In this exemplary embodiment, opening 216 includes a locking feature 266. The locking feature 266 is configured to hold the adapter 226. The locking feature 266 interacts with the locking feature 246 to hold the adapter 226. The locking feature 266 is non-screwed.

[0019]

[0036] In this exemplary embodiment, the locking feature is present in both the first half 204 and the second half 206. In some exemplary embodiments, the locking feature is operable when the first half 204 and the second half 206 are detachably connected. In some exemplary embodiments, the locking feature includes a series of grooves.

[0020]

[0037] In some exemplary embodiments, a first number of openings 211 are provided with anti-rotation features. In this exemplary embodiment, opening 212 is provided with anti-rotation feature 256, and opening 214 is provided with anti-rotation feature 260. In this exemplary embodiment, opening 216 is provided with anti-rotation feature 264. The anti-rotation features may include projections configured to interact with their respective adapters.

[0021]

[0038] In some exemplary embodiments, several adapters 218 include slots. As shown, an anti-rotation feature 256 interacts with a slot 250 in adapter 222. As shown, an anti-rotation feature 260 interacts with a slot 252 in adapter 224. As shown, an anti-rotation feature 264 interacts with a slot 254 in adapter 226. The anti-rotation features are configured to restrict the movement of each adapter.

[0022]

[0039] Each of slots 250, 252, and 254 may allow a fiber to be inserted into the fiber management system 201 without separating the manifold 202. In some exemplary embodiments, slots 250, 252, and 254 act as keying features. In some exemplary embodiments, anti-rotation features 256, 260, and 264 act as keying features.

[0023]

[0040] In some exemplary embodiments, slots 250, 252, and 254 may reduce compression to each respective adapter. Slots 250, 252, and 254 may allow the manifold 202 to compress each adapter in order to retain each adapter within the manifold 202 without causing undesirable damage to each adapter.

[0024]

[0041] The material 290 of the manifold 202 is selected to enable the desired operation of the fiber management system 201. In some exemplary embodiments, the material 290 of the manifold 202 is selected based on the operating environment for the fiber management system 201. In some exemplary embodiments, the material 290 of the manifold 202 is selected based on weight. In some exemplary embodiments, the material 290 is selected to enable at least one of inspection, maintenance, or operation. In some exemplary embodiments, the material 290 of the manifold 202 is selected to enable the visual detection of stray light beams from damaged fibers. In some exemplary embodiments, the material 290 is selected to enable inspection of the optical fibers 274 within the manifold 202. In some exemplary embodiments, the manifold 202 includes a polymer 292. In some exemplary embodiments, the polymer 292 is at least one of transparent 209 or translucent.

[0025]

[0042] In some exemplary embodiments, the material 290 of the manifold 202 is a non-crushing material. In some exemplary embodiments, the material 290 of the manifold 202 is a material selected to reduce or prevent the scattering of the manifold 202. In some exemplary embodiments, the material 290 of the manifold 202 provides sufficient flexibility for fastening. In some exemplary embodiments, the material 290 of the manifold 202 is sufficiently compliant to allow the captive fastener 276 to be fed through an expandable opening 278. In this exemplary embodiment, the manifold 202 comprises a captive fastener system 277. The captive fastener system 277 holds the captive fastener 276 to reduce foreign debris. In some exemplary embodiments, the captive fastener system 277 includes an expandable opening having an initial diameter within one of the first half or the second half. In this case, the expandable opening is connected to a channel, and the channel in the first or second half has an inner diameter larger than the initial diameter and an outlet diameter configured to hold the fastener head inside the channel.

[0026]

[0043] In this exemplary embodiment, an expandable opening 278 is located within the first half 204 of the manifold 202. To restrain the captive fastener 276, the captive fastener 276 is fed through the expandable opening 278. In some exemplary embodiments, each of the expandable openings 278 includes a slot 282 and a chamfered portion 284. Each slot allows the captive fastener 276 to enter through the expandable opening 278. An edge blend 286 in the channel 280 may assist in retaining the captive fastener 276. The edge blend 286 in the channel 280 may allow for the intentional removal of the captive fastener 276 from the channel 280.

[0027]

[0044] To secure the first half 204 to the second half 206 of the manifold 202, a captive fastener 276 is fastened to the second half 206. In some exemplary embodiments, the captive fastener 276 is fastened to a threaded insert 288 within the second half 206. In other exemplary embodiments, the captive fastener 276 is fastened to a thread within the second half 206.

[0028]

[0045] The fiber management system 201 comprises a manifold 202, several corrugated pipes 228, several corrugated pipes 230, several adapters 218 for connecting several corrugated pipes 228 to a first end 208 of the manifold 202, and several adapters 220 for connecting several corrugated pipes 230 to a second end 210 of the manifold 202. Each of the several adapters 218 is provided with a threaded connector and a non-threaded locking feature. Each of the several adapters 220 is provided with a threaded connector and a non-threaded locking feature.

[0029]

[0046] In some exemplary embodiments, at least one of several adapters 218 has a threaded connector having a different diameter from that of another adapter. In this exemplary embodiment, adapter 222 has a threaded connector 238 configured to connect to a corrugated pipe 232 having a diameter 268. In this exemplary embodiment, adapter 224 has a threaded connector 242 configured to connect to a corrugated pipe 234 having a diameter 270. In some exemplary embodiments, the diameter 268 is different from the diameter 270. In some exemplary embodiments, the diameters 268 and 270 are different, but the locking features of adapters 222 and 224 are the same.

[0030]

[0047] In this exemplary embodiment, the threaded connector 248 is configured to connect to the corrugated pipe 236. In this exemplary embodiment, the corrugated pipe 236 has a diameter of 272.

[0031]

[0048] In some exemplary embodiments, all of the adapters among several adapters 218 and several adapters 220 have locking features of the same size configured to interact with the manifold 202. In some exemplary embodiments, the manifold 202 includes anti-rotation features configured to restrict the movement of some of the adapters 218.

[0032]

[0049] Manifold 202 is a two-piece body variable-size branch design that allows for the inspection, modification, and repair of the assembly without disassembling other parts of the wire assembly. Multiple exemplary embodiments allow each branch to be standalone until reassembled with the manifold body. Non-threaded locking features allow for the reduction or elimination of twisting in some corrugated tubes 228 and some corrugated tubes 230.

[0033]

[0050] In some exemplary embodiments, the manifold 202 features a split design of a transparent two-piece body that utilizes a common-size locking feature for all adapters, enabling the ability to easily change the size while maintaining the existing body design. In some exemplary embodiments, the locking feature takes the form of several collars.

[0034]

[0051] In some exemplary embodiments, each threaded adapter (some adapters 218 and some adapters 220) maintains a slot to allow the fiber to be threaded without having to disassemble the fiber assembly. In some exemplary embodiments, the slots take the form of an interrupt of + / - 0.1 inches.

[0035]

[0052] In this exemplary embodiment, a captive hardware design is provided to keep the hardware within the manifold 202 in the event of hardware loosening. A captive fastener system 277 keeps the captive fastener 276 within the manifold 202.

[0036]

[0053] Multiple exemplary embodiments may be used for any conductor or fiber cable passing through conduits having divisions or branches. Multiple exemplary embodiments may be used for test equipment to verify the operation of conductors or fiber cables. Multiple exemplary embodiments may be used in aircraft, ships, commercial buildings, or other platforms utilizing corrugated conduits.

[0037]

[0054] Several exemplary embodiments allow for modification, inspection, or repair of at least one of the following without disassembling the cable assembly from the connector to the Y-adapter. Visual inspection of the fibers in the old manifold adapter area is impossible because the material is either opaque or not easily inspectable.

[0038]

[0055] The diagram of the manufacturing environment 200 in Figure 2 is not intended to impose any physical or structural limitations on how an exemplary embodiment may be implemented. Other components may be used in addition to or instead of the components shown. Some components may be unnecessary. Also, several blocks are presented to illustrate several functional components. One or more of these blocks may be combined, divided, or combined and divided into several different blocks when implemented in an exemplary embodiment.

[0039]

[0056] For example, in some exemplary embodiments, the manifold 202 may have three or more openings at the first end 208. In other exemplary embodiments, the manifold 202 may have two or more openings at the second end 210. In some exemplary embodiments, the threaded insert 288 is optional.

[0040]

[0057] In another embodiment, the captive fastener 276 may be optional. In some exemplary embodiments, the manifold 202 may be fixed together without the captive fastener system 277. In some exemplary embodiments, when the captive fastener 276 is not used, the expandable opening 278 does not exist.

[0041]

[0058] Referring now to Figure 3, a diagram of a fiber extending through a corrugated pipe and a manifold is shown according to an exemplary embodiment. In view 300, manifolds 302 and 304 may be multiple physical embodiments of manifold 202 in Figure 2. Manifold 302 connects two corrugated pipes at its first end to a single corrugated pipe at its second end. Corrugated pipes 306 and 308 are connected to the first end of manifold 302. Corrugated pipe 310 is connected to the second end of manifold 302. Manifold 302 may be referred to as a 1 / 2 manifold.

[0042]

[0059] Manifold 304 connects three corrugated pipes at its first end to a single corrugated pipe at its second end. Corrugated pipes 318, 320, and 322 are connected to the first end of manifold 304. Corrugated pipe 324 is connected to the second end of manifold 304. Manifold 304 may be called a 1 / 3 manifold.

[0043]

[0060] The manifold is connected to the corrugated pipe by adapters. Several adapters extend into the corrugated pipe and manifold 302. Adapter 312 connects corrugated pipe 306 to manifold 302. Adapter 314 connects corrugated pipe 308 to manifold 302. Adapter 316 connects corrugated pipe 310 to manifold 302. Adapters 312, 314, and 316 may be multiple physical embodiments of some adapters 218 and some adapters 220 in Figure 2.

[0044]

[0061] Several adapters extend into the corrugated pipe and manifold 304. Adapter 326 connects corrugated pipe 318 to manifold 304. Adapter 328 connects corrugated pipe 320 to manifold 304. Adapter 330 connects corrugated pipe 322 to manifold 304. Adapter 332 connects corrugated pipe 324 to manifold 304. Adapters 326, 328, 330, and 332 may be multiple physical embodiments of some adapters 218 and some adapters 220 in Figure 2.

[0045]

[0062] Referring next to Figure 4, an isometric view of a manifold and adapter according to an exemplary embodiment is shown. Manifold 402 in view 400 is a physical embodiment of manifold 202 in Figure 2. In some exemplary embodiments, manifold 402 is the same as manifold 302 in Figure 3. Manifold 402 may be used within aircraft 100 to run wires such as electrical wires or optical fibers. In some exemplary embodiments, manifold 402 may be part of a maintenance device used to test components of aircraft 100.

[0046]

[0063] Several adapters 404 are connected to manifold 402. Some adapters 404 include adapters 406 and 408 connected to manifold 402. Some adapters 404 include adapter 410 connected to manifold 402.

[0047]

[0064] Referring now to Figure 5, a partially exploded side view of a manifold and adapter according to an exemplary embodiment is shown. View 500 is a partially exploded view of the manifold 402. In view 500, the manifold 402 is shown as transparent for ease of explanation. The manifold 402 may be manufactured from any desired material having any desired color or opacity. In this exemplary embodiment, the manifold 402 comprises a first half 501 and a second half 503.

[0048]

[0065] View 500 shows several adapters 404 more clearly. In this exemplary embodiment, several adapters 404 have two or more diameters. Each of the several adapters 404 has a connector of the same size for engagement with the manifold 402. Each of the several adapters can be removed and replaced with a different adapter if an adapter of a different diameter is desired.

[0049]

[0066] The adapter 410 comprises a threaded connector 502 and a locking feature 504. The locking feature 504 is non-threaded. In some exemplary embodiments, the locking feature 504 may take on a different desired shape to hold the adapter 410 in the manifold 402 without threads. The locking feature 504 is the same as the locking feature 508 and the locking feature 514. When different types of locking features are used for the adapter 410, all adapters for the manifold 402 will have the same type of locking feature so that the adapter is universal.

[0050]

[0067] In this exemplary embodiment, the locking feature 504 takes the form of a cylindrical projection. The cylindrical projection of the locking feature 504 holds the adapter 410 within the opening 506 of the manifold 402. In this exemplary embodiment, the opening 506 is located at the first end 505 of the manifold 402. When the manifold 402 is connected, the adapters 406 and 408 are connected to the first end 505 of the manifold 402. In this exemplary embodiment, the locking feature includes a series of grooves. In these exemplary embodiments, each of the adapters has a locking feature of the same size configured to interact with the manifold 402.

[0051]

[0068] In this exemplary embodiment, the locking feature 508 takes the form of a cylindrical projection. The cylindrical projection of the locking feature 508 holds the adapter 406 within the opening 512 of the manifold 402. In this exemplary embodiment, the opening 512 is located at the second end 507 of the manifold 402. When the manifold 402 is connected, the adapter 410 is connected to the second end 507 of the manifold 402.

[0052]

[0069] In this exemplary embodiment, the locking feature 514 takes the form of a cylindrical projection. The cylindrical projection of the locking feature 514 holds the adapter 408 within the opening 518 of the manifold 402. In this exemplary embodiment, the projection is not continuous. In this exemplary embodiment, the opening 518 is located at the second end 507 of the manifold 402.

[0053]

[0070] Adapter 406 comprises a screw-type connector 508 and a locking feature 510. The screw-type connectors 502 and 510 do not have the same diameter, but they can be used depending on the application. Adapter 408 also comprises a locking feature 514 and a screw-type connector 516. The screw-type connector 516 has a smaller diameter than the screw-type connectors 510 and 502.

[0054]

[0071] In this exemplary embodiment, each of the openings 506, 512, and 518 has a locking feature for interacting with the locking feature of the adapter. The locking feature of the manifold 402 is operable when the first half 501 and the second half 503 are detachably connected.

[0055]

[0072] In this exemplary embodiment, a captive fastener 520 is used to connect the first half 501 of the manifold 402 to the second half 503. The captive fastener 520 is constrained within the channel of the first half 501 of the manifold 402. The captive fastener 520 connects to a threaded insert 522 in the second half 503. In this exemplary embodiment, a threaded insert 522 is used, but in several other structures, the captive fastener 520 may connect to a thread in the second half 503.

[0056]

[0073] Referring now to Figure 6, an exploded isometric view of a manifold and adapter according to an exemplary embodiment is shown. In view 600, the captive fastener 520 is shown exploded from an expandable opening 602 within the first half 501. To install the captive fastener 520, it is pressed into the expandable opening 602. The shaft of the captive fastener 520 is fed through the expandable opening 602 into the channel 604. The head of the captive fastener 520 is fed through the expandable opening 602 and then held within the channel 604.

[0057]

[0074] Referring next to Figure 7, a side view of a plurality of adapters according to an exemplary embodiment is shown. Adapter 701 in Figure 7 may be a physical embodiment of an adapter for several adapters 218 or several adapters 220. In some exemplary embodiments, at least one adapter of adapter 701 may be used in the fiber management system 301 of Figure 3. In some exemplary embodiments, adapter 701 may be used in conjunction with the manifold 402 of Figures 4 to 6.

[0058]

[0075] In view 700, the adapters 701 are aligned to allow for easier comparison of multiple components. Each of the adapters 701 has a different design from the others. Adapter 701 includes adapters 702, 704, and 706. Adapter 702 has a locking feature 708 and a threaded connector 710. Adapter 704 has a locking feature 712 and a threaded connector 714. Adapter 706 has a locking feature 716 and a threaded connector 718. Locking features 708, 712, and 716 are each identical. Locking features 708, 712, and 716 allow the adapters 701 to be interchangeable within the manifold. In some exemplary embodiments, locking features 708, 712, and 716 are referred to as universal locking features.

[0059]

[0076] Screw connectors 710, 714, and 718 are configured to connect to corrugated pipes of different diameters. As shown, screw connector 710 has a larger diameter and thicker threads than screw connectors 714 and 718. Screw connector 710 has a diameter of 720. Diameter 720 is larger than diameters 722 and 724. Adapter 702 is configured to connect to the corrugated pipe having the largest diameter. As shown, screw connector 714 has a diameter of 722 which is smaller than diameter 720. Screw connector 718 has the smallest diameter and narrowest threads of adapter 701. Screw connector 718 has a diameter of 724.

[0060]

[0077] In this exemplary embodiment, each of the multiple adapters 701 includes a slot. In this exemplary embodiment, adapter 702 includes a slot 726. The slot 726 can prevent adapter 702 from rotating within the manifold. In some exemplary embodiments, the slot 726 may act as a keying feature. Fibers extending through adapter 702 may be twisted if adapter 702 rotates. Preventing rotation can maintain the quality of the fiber. In some exemplary embodiments, the slot 726 allows the fiber to be inserted into a fiber management system.

[0061]

[0078] Slot 726 can reduce compression on the adapter. Slot 726 may allow the manifold to compress the adapter 702 in order to hold the adapter 702 within the manifold without undesiring damage to the adapter 702.

[0062]

[0079] Next, referring to Figure 8, a bottom view of a manifold with anti-rotation features according to an exemplary embodiment is shown. Manifold 800 is a physical embodiment of manifold 202 in Figure 2. In some exemplary embodiments, manifold 800 may be the same as manifold 302 in Figure 3. Manifold 800 may be the same as manifold 402 in Figures 4 to 6. In some exemplary embodiments, manifold 800 may be used with adapter 701 in Figure 7.

[0063]

[0080] The manifold 800 comprises a first half 802 and a second half 804 detachably connected to the first half 802 to form a space within the manifold 800. The manifold 800 includes a first number of openings at the first end for access to the space. In this exemplary embodiment, the first number of openings includes opening 806. The manifold 800 includes a second number of openings at the second end for access to the space. In this exemplary embodiment, the second number of openings includes opening 808 and opening 810. Each of the openings has an anti-rotation feature. Opening 806 has an anti-rotation feature 814. Opening 808 has an anti-rotation feature 816. Opening 810 has an anti-rotation feature 818.

[0064]

[0081] Each anti-rotation feature can prevent rotation of the respective adapter and corrugated tube. In some exemplary embodiments, each rotation feature can act as a keying feature.

[0065]

[0082] Referring next to Figure 9, an exploded isometric view of a manifold and adapter according to an exemplary embodiment is shown. Manifold 902 in view 900 is a physical embodiment of manifold 202 in Figure 2. In some exemplary embodiments, manifold 902 is the same as manifold 304 in Figure 3. Manifold 902 may be used within aircraft 100 to run wires such as electrical wires or optical fibers. In some exemplary embodiments, manifold 902 may be part of a maintenance device used to test components of aircraft 100. Manifold 902 may be referred to as a 1 / 3 manifold.

[0066]

[0083] Manifold 902 comprises a first half 904 and a second half 906. Separating the first half 904 and the second half 906 divides openings 916, 918, 920, and 922, respectively. Multiple adapters can be used to connect multiple corrugated pipes to manifold 902. In this exemplary embodiment, the multiple adapters include adapter 908, adapter 910, adapter 912, and adapter 914. Each of the multiple adapters is interchangeable due to the same locking characteristics. Each adapter may be selected based on the size of the corrugated pipe.

[0067]

[0084] Next, referring to Figure 10, a side view of a fastener before it is installed as a captive fastener is shown according to an exemplary embodiment. In some exemplary embodiments, fastener 1001 and structure 1004 may be components of aircraft 100 in Figure 1. In some exemplary embodiments, structure 1004 may be a physical embodiment of manifold 202 in Figure 2. In some exemplary embodiments, structure 1004 may be part of manifold 402 in Figures 4 to 6. In some exemplary embodiments, structure 1004 may be part of manifold 800 in Figure 8. In some exemplary embodiments, structure 1004 may be part of manifold 902 in Figure 9.

[0068]

[0085] View 1000 is a view of fastener 1001 before it is installed within structure 1004 as a captive fastener. In view 1000, the shank portion of fastener 1001 extends into structure 1004. The head 1002 of fastener 1001 is outside structure 1004.

[0069]

[0086] The shank portion of fastener 1001 extends through an expandable opening 1006. The expandable opening 1006 is configured to expand to allow the head 1002 of fastener 1001 to pass through the opening 1006. A slot 1008 in the structure 1004 allows the expansion of the expandable opening 1006 to allow the head 1002 of fastener 1001 to enter.

[0070]

[0087] Next, referring to Figure 11, a cross-sectional view of a fastener before it is installed as a captive fastener in a channel, according to an exemplary embodiment. View 1100 is a cross-sectional view of the structure 1004. In view 1100, the chamfered portion 1102 of the expandable opening 1006 is visible. The chamfered portion 1102 allows for easier entry of the head 1002 of the fastener 1001.

[0071]

[0088] Channel 1104 within structure 1004 is visible in view 1100. Channel 1104 includes an edge blend 1106 configured to hold the head 1002 of fastener 1001. The edge blend 1106 may be called an upper inner edge blend. The edge blend 1106 improves the captive function while allowing the fastener to be intentionally removed for replacement. The edge blend 1106 within channel 1104 faces an expandable opening 1006.

[0072]

[0089] The expandable opening 1006 has an initial diameter 1108 and is connected to a channel 1104. The channel 1104 has an inner diameter 1110 that is larger than the initial diameter 1108. The channel also has an exit diameter (not shown) configured to hold the head 1002 of the fastener 1001 inside the channel 1104. The inner diameter 1110 of the channel 1104 is configured to allow the movement of the head 1002 within the channel 1104.

[0073]

[0090] Next, referring to Figure 12, a cross-sectional view of a captive fastener in a channel according to an exemplary embodiment is shown. In view 1200, fastener 1001 is fed into channel 1104 through an expandable opening 1006. In view 1200, fastener 1001 is referred to as captive fastener 1202. The head 1002 of fastener 1001 is confined within channel 1104.

[0074]

[0091] Next, referring to Figure 13, a diagram of a structure in which a captive fastener is located within a channel is shown according to an exemplary embodiment. In view 1300, the shaft 1302 of the captive fastener 1202 extends outside the structure 1004. The head 1002 of the captive fastener 1202 is not visible in view 1300. In view 1300, the head 1002 of the captive fastener 1202 is held within the channel 1104. The captive fastener 1202 can be used to join structure 1004 to another structure.

[0075]

[0092] Referring now to Figure 14, a block diagram of a manufacturing environment according to an exemplary embodiment is shown. The captive fastener system 1401 may be used in the aircraft 100 of Figure 1. The captive fastener system 1401 may be used in the fiber management system 201 of Figure 2. The captive fastener system 1401 may include the captive fastener 276 of Figure 2. The captive fastener system 1401 may be used in the manifold 302 or manifold 304 of Figure 3. The captive fastener system 1401 may be used in the manifold 402 of Figures 4 to 6. The captive fastener system 1401 may be used in the manifold 800 of Figure 8. The captive fastener system 1401 may be used in the manifold 902 of Figure 9. The captive fastener system 1401 may include the fastener 1001 and the channel 1104 of structure 1004 shown in Figures 10 to 13.

[0076]

[0093] The captive fastener system 1401 can be assembled in a manufacturing environment 1400. The captive fastener system 1401 includes a channel 1414 and an expandable opening 1408 connected to the channel 1414, having an initial diameter 1411. The channel 1414 has an inner diameter 1415 that is larger than the initial diameter 1411 and an outlet diameter 1425 configured to hold the head 1420 of the captive fastener 1416 inside the channel 1414.

[0077]

[0094] The channel 1414 and the expandable opening 1408 are configured to allow controlled insertion of the captive fastener 1416 and intentional removal of the captive fastener 1416. The channel 1414 and the expandable opening 1408 are configured to hold the captive fastener 1416 within the channel 1414. Holding the captive fastener 1416 within the channel 1414 reduces or eliminates foreign object debris (FOD).

[0078]

[0095] In some exemplary embodiments, the channel 1414 features include an edge blend 1418. In some exemplary embodiments, the edge blend 1418 is located within the channel 1414 toward an expandable opening 1408. In some exemplary embodiments, the captive fastener system 1401 includes an edge blend 1418 within the channel 1414 at the end opposite to the exit diameter 1425. In some exemplary embodiments, the edge blend 1418 holds the head 1420 within the channel 1414. In some exemplary embodiments, the edge blend 1418 is configured to assist in the controlled removal of the captive fastener 1416 from the channel 1414. In some exemplary embodiments, the edge blend 1418 is configured based on the size and shape of the head 1420.

[0079]

[0096] In some exemplary embodiments, several features of the expandable opening 1408 include chamfered portions 1412. In some exemplary embodiments, the chamfered portions 1412 on the expandable opening 1408 are configured to allow insertion of the head 1420 into the channel 1414.

[0080]

[0097] In some exemplary embodiments, several features of the expandable opening 1408 include a slot 1410. In some exemplary embodiments, the slot 1410 is located within a structure 1402 that extends from the expandable opening 1408 toward the channel 1414. In some exemplary embodiments, the slot 1410 allows the expandable opening 1408 to increase in size from an initial diameter 1411 to a size large enough to allow the head 1420 to enter the channel 1414.

[0081]

[0098] The channel 1414 has a length 1419. In some exemplary embodiments, the length 1419 of the channel 1414 is sufficient to fully accommodate the captive fastener 1416, including the shaft 1421 and the head 1420. In some exemplary embodiments, the length 1419 of the channel 1414 is long enough so that the threads 1422 do not protrude from the structure 1402. In some exemplary embodiments, the structure 1402 can be described as the first half 1404 of an assembly such as a manifold. The length 1419 of the channel 1414 may allow the joining of the structure 1402 and the structure 1403 without the possibility of foreign debris. The length 1419 of the channel 1414 may allow the joining of the structure 1402 and the structure 1403 without the captive fastener 1416 inadvertently damaging the structure 1403.

[0082]

[0099] Structure 1402 is formed of material 1432 configured to allow insertion and removal of a captive fastener 1416 without damaging structure 1402. In some exemplary embodiments, material 1432 is configured to provide sufficient flexibility to allow insertion and removal of the captive fastener 1416 without damaging structure 1402. In some exemplary embodiments, material 1432 includes polymer material 1434. In some exemplary embodiments, the edges 1413 of the expandable opening 1408 and the walls 1417 of the channel 1414 are formed of polymer material 1434.

[0083]

[0100] The inner diameter 1415 of the channel is configured to allow movement of the head 1420 within the channel 1414. The outlet diameter 1425 is smaller than the inner diameter 1415. The outlet diameter 1425 is formed by any desired feature of the channel 1414. In some exemplary embodiments, the outlet diameter 1425 is defined by a flange 1424 that extends inward within the channel 1414.

[0084]

[0101] In some exemplary embodiments, a captive fastener system 1401 comprises a channel 1414 and a captive fastener 1416 having a head 1420 positioned within the channel 1414. The channel 1414 has an expandable opening 1408 configured to allow the head 1420 of the captive fastener 1416 to enter and restrict the exit of the head 1420 of the captive fastener 1416, and an exit diameter 1425 configured to allow the shaft 1421 of the captive fastener 1416 to extend through the exit diameter 1425 and prevent the head 1420 of the captive fastener 1416 from exiting.

[0085]

[0102] Structure 1402 can be joined to structure 1403 by a captive fastener 1416. Structure 1403 includes a channel 1426 that receives the captive fastener 1416. In some exemplary embodiments, the channel 1426 is threaded such that it threads with the threads 1422 of the captive fastener 1416. In several other exemplary embodiments, a threaded insert 1430 is located within the channel 1426. When the threaded insert 1430 is located within the channel 1426, the threaded insert 1430 is configured to thread with the threads 1422 of the captive fastener 1416. In some exemplary embodiments, structure 1403 can be described as a second half 1406 of the assembly.

[0086]

[0103] The diagram of the manufacturing environment 1400 in Figure 14 is not intended to impose any physical or structural limitations on how an exemplary embodiment may be implemented. Other components may be used in addition to or instead of the components shown. Some components may be unnecessary. Also, several blocks are presented to illustrate several functional components. One or more of these blocks may be combined, divided, or combined and divided into several different blocks when implemented in an exemplary embodiment.

[0087]

[0104] For example, structure 1403 may be formed from the same material as material 1432 of structure 1402. In several other exemplary embodiments, structure 1403 may be formed from a different material than material 1432 of structure 1402.

[0088]

[0105] Referring now to Figure 15, a flowchart of a method for managing fibers according to an exemplary embodiment is shown. Method 1500 can be performed to manage the fibers of aircraft 100 in Figure 1. Method 1500 can be performed to manage optical fibers 274 in Figure 2. Method 1500 can be performed using the fiber management system 201 in Figure 2. Method 1500 can be performed using the fiber management system 301 in Figure 3. Method 1500 can be performed using the manifold 402 in Figures 4-6. Method 1500 can be performed using the adapter 701 in Figure 7. Method 1500 can be performed using the manifold 800 in Figure 8. Method 1500 can be performed using the manifold 902 in Figure 9. The captive fastener system 1010 in Figures 10-13 can be used in Method 1500 to connect or disconnect the manifolds. The captive fastener system 1401 shown in Figure 14 may be used in method 1500 to connect or disconnect a manifold.

[0089]

[0106] Method 1500 separates the first half of the manifold from the second half of the manifold, dividing each of the first number of openings at the first end of the manifold from each of the second number of openings at the second end of the manifold, providing access to fibers in the space of the manifold that extend through one of the first number of openings or the second number of openings to the corrugated pipe joined by the manifold (step 1502). Method 1500 then terminates.

[0090]

[0107] In some exemplary embodiments, Method 1500 connects a corrugated tube containing a fiber to the threaded ends of a plurality of adapters (Step 1504). In some exemplary embodiments, Method 1500 connects a first half of a manifold to a second half of a manifold in a detachable manner, thereby constraining the locking features of the plurality of adapters within a first number of openings and a second number of openings, and joining the corrugated tube to the manifold (Step 1506). Because the locking features are non-threaded, the corrugated tube is not twisted when the plurality of adapters are connected to the manifold.

[0091]

[0108] In some exemplary embodiments, Method 1500 adds a fiber into a manifold and one of the corrugated tubes through one of a plurality of adapters without separating the manifold (Step 1508). In some exemplary embodiments, a slot in the adapter allows the fiber to be inserted through the adapter without separating the manifold. In some exemplary embodiments, the insertion of the fiber may be visible through the transparent or translucent material of the manifold.

[0092]

[0109] Referring now to Figure 16, a flowchart of a method for installing a captive fastener according to an exemplary embodiment is shown. Method 1600 may be performed to install a captive fastener in the aircraft 100 of Figure 1. Method 1600 may be performed to install the captive fastener 276 of Figure 2. Method 1600 may be performed to install a captive fastener in the fiber management system 301 of Figure 3. Method 1600 may be performed to install a captive fastener in the manifold 402 of Figures 4-6. Method 1600 may be performed to install a captive fastener in the manifold 800 of Figure 8. Method 1600 may be performed using the manifold 902 of Figure 9. The captive fastener system 1010 of Figures 10-13 may be used in Method 1600 to connect or disconnect the manifold. The captive fastener system 1401 shown in Figure 14 may be used in method 1600 to connect or disconnect a manifold.

[0093]

[0110] Method 1600 involves positioning the shank of the fastener into the channel of the structure through an expandable opening (step 1602). Method 1600 involves pressing the head of the fastener through the expandable opening (step 1604). Method 1600 then involves holding the head of the fastener within the channel due to the characteristics of the channel (step 1606). Method 1600 is then completed.

[0094]

[0111] In some exemplary embodiments, pressing the fastener head into the channel includes expanding the expandable opening by a slot extending from the expandable opening toward the channel (step 1608). In some exemplary embodiments, pressing the fastener head into the channel includes pushing the fastener head beyond a chamfered portion of the expandable opening (step 1610). In some exemplary embodiments, the chamfered portion assists in inserting the head through the expandable opening.

[0095]

[0112] In some exemplary embodiments, retaining the fastener head includes retaining the fastener head by an edge blend in the channel toward an expandable opening (step 1612). In some exemplary embodiments, retaining the fastener head within the channel by a feature of the channel includes retaining the fastener head by a flange extending into the channel (step 1614).

[0096]

[0113] In some exemplary embodiments, Method 1600 applies pressure to the shank of a fastener so that the head of the fastener is fed out of the channel through an expandable opening in order to remove the fastener from the channel (step 1616). In some exemplary embodiments, Method 1600 positions the shank of a second fastener into the channel of the structure through an expandable opening (step 1618). In some exemplary embodiments, Method 1600 presses the head of the second fastener through an expandable opening (step 1620).

[0097]

[0114] Method 1600 holds the head of the second fastener within the channel by channel features (step 1622). In some exemplary embodiments, the channel features may include at least one flange forming the outlet diameter. In some exemplary embodiments, the channel features may include an edge blend.

[0098]

[0115] When used herein, the phrase "at least one of" means, when used with a list of items, that one or more different combinations of the listed items may be used, and only one of each item may be required. For example, though not limited to, "at least one of item A, item B, and item C" may include item A, item A and item B, or item B. This example may also include item A, item B, and item C, or item B and item C. Needless to say, any combination of these items is possible. In other examples, "at least one of" may, for example, be "two item A, one item B, and ten item C," "four item B and seven item C," or any other suitable combination. An item can be a specific object, thing, or category. In other words, "at least one of" means that any combination of items, and several items, may be used from the enumerated list, but not all of the enumerated items are required.

[0099]

[0116] In this specification, the term “a number of” when used in relation to an item means one or more items.

[0100]

[0117] The flowcharts and block diagrams in the various embodiments shown illustrate the structure, function, and operation of several possible embodiments of the apparatus and method in an exemplary embodiment. In this regard, each block in the flowchart or block diagram may represent at least one of a module, segment, function, or part of an operation or step.

[0101]

[0118] In some alternative embodiments of an exemplary embodiment, one or more functions described within a block may appear in a different order than that shown in the figure. For example, in some cases, two consecutively shown blocks may be executed almost simultaneously, or sometimes, depending on the functions they contain, blocks may be executed in reverse order. In addition, other blocks may be added to those shown in the flowchart or block diagram. Some blocks may be optional. For example, steps 1504 to 1508 may be optional. In another embodiment, steps 1608 to 1622 may be optional.

[0102]

[0119] Exemplary embodiments of this disclosure may be described in the context of the aircraft manufacturing and maintenance method 1700 shown in Figure 17 and the aircraft 1800 shown in Figure 18. Referring first to Figure 17, an aircraft manufacturing and maintenance method is shown in the form of a block diagram according to an exemplary embodiment. The aircraft manufacturing and maintenance method 1700 may include, in the pre-manufacturing stage, the specification and design 1702 of the aircraft 1800 shown in Figure 18 and the procurement of materials 1704.

[0103]

[0120] During the manufacturing phase, the components and subassemblies of the aircraft 1800 are manufactured 1706, and system integration 1708 is performed. Subsequently, the aircraft 1800 is licensed and delivered 1710 and put into service 1712. During customer service 1712, the aircraft 1800 is scheduled for periodic maintenance and upkeep 1714 (which may include modifications, reconfigurations, repairs, or other maintenance and upkeep).

[0104]

[0121] Each process of the aircraft manufacturing and maintenance method 1700 may be performed or carried out by a system integrator, a third party, and / or an operator. In some of these embodiments, the operator may be a customer. In this specification, a system integrator may include, but is not limited to, any number of aircraft manufacturers and major system subcontractors; a third party may include, but is not limited to, any number of vendors, subcontractors, and suppliers; and a business operator may be an airline, leasing company, military organization, service organization, etc.

[0105]

[0122] Referring now to Figure 18, an aircraft taking the form of a block diagram in which an exemplary embodiment may be implemented is shown. In this example, the aircraft 1800 may include a fuselage 1802 having a plurality of systems 1804 and interior 1806, manufactured by the aircraft manufacturing and maintenance method 1700 of Figure 17. Embodiments of system 1804 include one or more of the propulsion system 1808, electrical system 1810, hydraulic system 1812, and environmental system 1814. Any number of other systems may be included.

[0106]

[0123] The apparatus and methods specifically described herein may be used in at least one stage of the aircraft manufacturing and maintenance method 1700. One or more exemplary embodiments may be manufactured or used during at least one of the manufacturing 1706, system integration 1708, operation 1712, or maintenance and servicing 1714 of the components and subassemblies shown in Figure 17.

[0107]

[0124] Multiple exemplary embodiments recognize and consider one or more considerations. Multiple exemplary embodiments recognize and consider that wire assemblies and fiber optic assemblies are used to transmit electricity and data within a platform. A wire assembly may include long tubes branched and arranged in branches, and connections between the branches.

[0108]

[0125] Multiple exemplary embodiments recognize and consider that wire assemblies involve twisting long (30 feet + / -) tubes to install each branch for the initial manufacturing, using numerous manufacturers and labor hours. Current designs require complete disassembly to add or change the number or size of tubes. Modifying or repairing fiber cable assemblies using current manufacturing techniques can require an undesirable amount of time and resources due to complete disassembly from the connectors to the working manifold.

[0109]

[0126] Multiple exemplary embodiments recognize and consider that it would be desirable to have methods and apparatus for enabling the repair or redesign of fiber or wire assemblies without complete disassembly.

[0110]

[0127] Multiple exemplary embodiments present manifolds for connecting corrugated tubes. Multiple exemplary embodiments present fiber management systems and methods for managing fibers. Fiber tube manifold adapters are multi-piece variable input / output components that enable the construction and repair of fiber cables before and after connector termination. Multiple exemplary embodiments can be used with tubes of multiple sizes. Multiple exemplary embodiments enable the installation of fibers / wires after connector pin and socket termination.

[0111]

[0128] Several exemplary embodiments also present a captive fastener system. The design of the captive fastener system features a tapered, variable-size opening that accepts mounting hardware during installation and prevents the hardware from falling out during rework. The captive fastener hardware design eliminates the possibility of FOD caused by loose fasteners.

[0112]

[0129] Several exemplary embodiments allow for inspection, modification, or repair of fiber assemblies without completely disassembling the cable assembly from the connector to the Y-adapter. In some exemplary embodiments, the manifold allows for visual inspection without disassembling the manifold. In some exemplary embodiments, visual inspection can be performed when the manifold is transparent, semi-transparent, or translucent.

[0113]

[0130] In some exemplary embodiments, the manifold provides the ability to add additional fibers and branches while keeping the rest of the assembly intact. For example, when adding or modifying the number or size of tubes, such as when increasing two branches to three, a modular, multi-size, and variable input / output design allows for the most adaptable solution while maintaining existing components.

[0114]

[0131] Multiple exemplary embodiments save labor time for manufacturing, modification, and repair. Multiple exemplary embodiments also improve quality by reducing the likelihood of product damage. Multiple exemplary embodiments reduce or eliminate twisting of the outer conduit tube.

[0115]

[0132] Multiple exemplary embodiments relate to fiber optic tube manifolds with multi-piece variable input / output components. This manifold allows for the construction and repair of fiber optic cables before and after connector termination. The current design is free from tube size constraints, and product installation is not limited to before connector pin and socket termination. Multiple exemplary embodiments include modular manifolds with a two-piece body and variable-size branches. This allows for the ability to inspect, modify, and repair assemblies without disassembling other parts of the system. Multiple exemplary embodiments eliminate tube twisting, allowing each branch to be standalone until reassembled with the manifold body.

[0116]

[0133] The design of a captive fastener keeps the fastener within the manifold in the event that the fastener loosens during installation or rework. The design of a captive fastener can be used for multiple pieces that are connected together.

[0117]

[0134] Multiple exemplary embodiments can be used with any conductor or fiber cable passing through corrugated tubes, including splitting or branching. Multiple exemplary embodiments are suitable for weight-constrained applications where lightweight tubing is used. Multiple exemplary embodiments can be used in aircraft, ships, buildings, spacecraft, ergonomics, or several other fields where weight constraints are a concern.

[0118]

[0135] The descriptions of various exemplary embodiments are presented for illustrative and explanatory purposes only and are not intended to be exhaustive or to limit embodiments to those disclosed. Many modifications and variations will be apparent to those skilled in the art. Furthermore, various exemplary embodiments may offer different features compared to other exemplary embodiments. One or more selected embodiments have been chosen and described to best illustrate the principles and practical applications of the embodiments and to facilitate understanding of the disclosures of various embodiments and the various modifications suitable for the specific applications considered.

Claims

1. A captive fastener system (277, 1401), Expandable openings (278, 602, 1006, 1408) with initial diameters (1108, 1411) connected to channels (1104, 1414), and A captive fastener system (277, 1401) comprising the channels (1104, 1414), the channels (1104, 1414) having an inner diameter (1110, 1415) larger than the initial diameter (1108, 1411), and an outlet diameter (1425) configured to hold the heads (1002, 1420) of the fasteners (1001, 1416) inside the channels (1104, 1414).

2. The captive fastener system (277, 1401) according to claim 1, further comprising edge blends (1106, 1418) within the channels (1104, 1414) toward the expandable openings (278, 602, 1006, 1408).

3. The captive fastener system according to claim 1, further comprising chamfered portions (284, 1102, 1412) on the expandable openings (278, 602, 1006, 1408) (277, 1401).

4. The captive fastener system according to claim 1, further comprising slots (282, 1008, 1410) extending from the expandable openings (278, 602, 1006, 1408) toward the channels (1104, 1414).

5. The captive fastener system (277, 1401) according to claim 1, wherein the outlet diameter (1425) is defined by a flange (1424) extending inward within the channel (1104, 1414).

6. The captive fastener system (277, 1401) according to claim 1, wherein the edges (1413) of the expandable openings (278, 602, 1006, 1408) and the walls (1417) of the channels (1104, 1414) are formed of a polymer material (292, 1434).

7. A method (1600) for installing captive fasteners (276, 1001, 1202, 1416), To position the shank of the fastener (1001) within the channel (1104, 1414) of the structure (1004, 1402) through the expandable opening (278, 602, 1006, 1408) (1602), Pressing the heads (1002, 1420) of the fastener (1001) through the expandable openings (278, 602, 1006, 1408) (1604), and A method (1600) comprising holding the heads (1002, 1420) of the fasteners (1001, 1416) within the channels (1104, 1414) due to the characteristics of the channels (1104, 1414) (1606).

8. The method according to claim 7 (1600), wherein pressing the head (1002, 1420) of the fastener (1001) into the channel (1104, 1414) includes expanding the expandable opening (278, 602, 1006, 1408) by slots (282, 1008, 1410) extending from the expandable opening (278, 602, 1006, 1408) toward the channel (1104, 1414) (1608).

9. The method according to claim 7 (1600), wherein pressing the head (1002, 1420) of the fastener (1001) into the channel (1104, 1414) includes pushing the head (1002, 1420) of the fastener (1001) beyond the chamfered portion (284, 1102, 1412) of the expandable opening (278, 602, 1006, 1408) (1610).

10. The method according to claim 7 (1600), wherein the head (1002, 1420) of the fastener (1001) is held by an edge blend (1106, 1418) in the channel (1104, 1414) toward the expandable opening (278, 602, 1006, 1408) (1612).

11. The method according to claim 7 (1600), wherein, due to the features of the channels (1104, 1414), the heads (1002, 1420) of the fasteners (1001, 1416) are held within the channels (1104, 1414), which includes holding the heads (1002, 1420) of the fastener (1001) by a flange (1424) extending into the channels (1104, 1414) (1614).

12. The method according to claim 7 (1600), further comprising applying pressure (1616) to the shank of the fastener (1001) in order to release the fastener (1001, 1416) from the channel (1104, 1414) by pushing the head (1002, 1420) of the fastener (1001) out of the channel (1104, 1414) through the expandable opening (278, 602, 1006, 1408).

13. Positioning the shank of the second fastener into the channel (1104, 1414) of the structure (1004, 1402) through the expandable opening (278, 602, 1006, 1408) (1618), Pressing the head of the second fastener through the expandable opening (278, 602, 1006, 1408) (1620), and The method according to claim 12 (1600), further comprising holding the head of the second fastener within the channels (1104, 1414) due to the characteristics of the channels (1104, 1414) (1622).

14. A captive fastener system (277, 1401), Fasteners (1001, 1416) having heads (1002, 1420) positioned within channels (1104, 1414), and A captive fastener system (277, 1401) comprising the channels (1104, 1414), the channels (1104, 1414) having expandable openings (278, 602, 1006, 1408) configured to allow the heads (1002, 1420) of the fasteners (1001, 1416) to enter and restrict the exit of the heads (1002, 1420) of the fasteners (1001, 1416), and the exit diameter (1425) configured to allow the shafts (1302, 1421) of the fasteners (1001, 1416) to extend through the exit diameter (1425) and prevent the exit of the heads (1002, 1420) of the fasteners (1001, 1416).

15. The captive fastener system according to claim 14, further comprising an edge blend (1106, 1418) within the channel (1104, 1414) at the end opposite to the outlet diameter (1425).

16. The captive fastener system according to claim 14, further comprising chamfered portions (284, 1102, 1412) on the expandable openings (278, 602, 1006, 1408) (277, 1401).

17. The captive fastener system according to claim 14, further comprising slots (282, 1008, 1410) extending from the expandable openings (278, 602, 1006, 1408) into the channels (1104, 1414).

18. The captive fastener system (277, 1401) according to claim 14, wherein the outlet diameter (1425) is defined by a flange (1424) extending inward within the channel (1104, 1414).

19. The captive fastener system (277, 1401) according to claim 14, wherein the inner diameters (1110, 1415) of the channels (1104, 1414) are configured to allow movement of the heads (1002, 1420) within the channels (1104, 1414).

20. The captive fastener system (277, 1401) according to claim 14, wherein the edges (1413) of the expandable openings (278, 602, 1006, 1408) and the walls (1417) of the channels (1104, 1414) are formed of a polymer material (292, 1434).

Images