Fixing assembly

Abstract

The utility model provides a fixing assembly which can properly adjust the position of a gasket when a heat insulation and sound insulation material is kept on a frame of an aircraft, the gasket is convenient to detach, and damage to the gasket during detachment can be easily restrained. The fixing assembly comprises a fixing nail, more than three protruding portions are formed on the peripheral face of the fixing nail, and the protruding portions are arranged in the axial direction and are in an arc shape when observed in the circumferential direction. The ring sleeve is detachably arranged on the fixing nail in a sleeving manner and is provided with a cylindrical main body and an outer side protruding part, the cylindrical main body is used for allowing the fixing nail to penetrate in the axial direction, and the outer side protruding part protrudes from the cylindrical main body to the radial outer side; the gasket is detachably arranged at the position, different from the ring sleeve, of the fixing nail in a sleeving mode, the inner circumferential portion of the gasket is clamped between the two protruding portions adjacent in the axial direction, and clamping can be released through elastic deformation.

Description

Technical Field

[0001] This utility model relates to a fixing component. Background Technology

[0002] A conventional fastener includes a stud and a grommets. The stud is semi-closed and coiled, and has a retaining element with a right-angled triangular cross-section. The grommets are fitted onto the studs and engage with them via a coupling element. When using the above-mentioned fastener to hold thermal insulation and sound insulation materials to an aircraft frame, the stud is passed through a through-hole in the aircraft frame and the grommets are inserted into the through-hole. Then, the thermal insulation and sound insulation materials are fitted onto the studs, and an annular washer is fitted onto the studs to clamp the thermal insulation and sound insulation materials (see Patent Document 1).

[0003] Patent Document 1: CN113646231A

[0004] However, when using the aforementioned fasteners to hold thermal insulation and soundproofing materials to the aircraft frame, the inner circumference of the gasket abuts against the right-angled edge of the retaining element of the stud. Therefore, when it is necessary to remove the gasket from the stud, the gasket is difficult to remove and is easily damaged, making subsequent disassembly, maintenance, and replacement of thermal insulation and soundproofing materials inconvenient. In particular, in order to facilitate the adjustment of the gasket's position, multiple retaining elements are usually arranged axially on the stud, in which case the above problems become more prominent. Utility Model Content

[0005] This utility model was made in view of the above-mentioned problems, and its purpose is to provide a fixing component that can appropriately adjust the position of the gasket when holding thermal insulation and sound insulation materials to the frame of an aircraft, and the gasket is easy to disassemble and can easily suppress damage to the gasket during disassembly.

[0006] To achieve the above objectives, this utility model provides a fixing component, comprising: a fixing pin having three or more protrusions formed on its outer peripheral surface, the protrusions being arranged axially and appearing arc-shaped when viewed circumferentially; a ring sleeve detachably fitted onto the fixing pin, having a cylindrical body and an outer protrusion, the cylindrical body through which the fixing pin passes axially, and the outer protrusion protruding radially outward from the cylindrical body; and a gasket detachably fitted onto the fixing pin at a position different from the ring sleeve, the inner peripheral portion engaging between two axially adjacent protrusions, and capable of being released from engagement by elastic deformation.

[0007] According to the fixing component of this utility model, the fixing pin has three or more protrusions on its outer peripheral surface. Therefore, when holding thermal insulation and sound insulation materials such as heat insulation materials to the frame of an aircraft, the position of the gasket can be appropriately adjusted according to the thickness of the thermal insulation and sound insulation materials by engaging the inner peripheral portion of the gasket between different protrusions. Furthermore, since the multiple protrusions are arranged axially and appear as arcs when viewed circumferentially, the gasket is easy to remove from the fixing pin, suppressing damage to the gasket during removal, thereby facilitating the removal and maintenance of thermal insulation and sound insulation materials.

[0008] Furthermore, in the fixing component of this utility model, preferably at least a portion of the plurality of protrusions includes a plurality of protrusions spaced apart in the circumferential direction.

[0009] According to the fixing component of this utility model, the gasket can be easily and stably held in the axial direction by the fixing nail.

[0010] Furthermore, in the fixing assembly of this utility model, preferably, the plurality of protrusions each include a first protrusion and a second protrusion disposed on opposite sides of the radial direction, separated by the center of the fixing nail, the first protrusions of the plurality of protrusions are arranged on a straight line parallel to the axial direction, and the second protrusions of the plurality of protrusions are arranged on a straight line parallel to the axial direction.

[0011] Furthermore, in the fixing assembly of this utility model, the ring sleeve preferably also has an inner protrusion, which extends radially inward from the cylindrical body and engages between two axially adjacent protrusions, and can be released from engagement by elastic deformation.

[0012] According to the fixing component of this utility model, when holding heat-insulating and sound-insulating materials such as thermal insulation materials to the frame of an aircraft, the position of the ring can be appropriately adjusted by engaging the inner protrusion of the ring between different protrusions.

[0013] Furthermore, in the fixing assembly of this utility model, preferably the inner protrusion is formed at both ends of the cylindrical body in the axial direction, the outer protrusion is formed at one end of the cylindrical body in the axial direction, and the ring sleeve also has a flange portion that is folded radially outward from the other end of the cylindrical body in the axial direction, and the outer diameter is smaller than the outer diameter of the outer protrusion portion.

[0014] According to the fixing component of this utility model, the ring can be held more stably to the fixing nail, and the aircraft frame can be clamped from both sides of the axial direction by means of the flange and the outer protrusion, thereby holding the heat insulation and sound insulation materials to the aircraft frame more stably.

[0015] Furthermore, in the fixing assembly of this utility model, the gasket preferably has an annular body and an extension piece. The extension piece extends radially inward from the inner hole of the annular body, and its front end engages between two axially adjacent protrusions. The extension piece elastically deforms in the assembled state of the gasket, so that it protrudes at an angle relative to the annular body in a manner that the closer it is to the radial inward side, the further away it is from the ring.

[0016] According to the fixing assembly of this utility model, the extension piece of the gasket elastically deforms when the gasket is assembled with the fixing pin, and protrudes at an angle relative to the annular body of the gasket in a manner that the closer to the radial inward side, the further away from the ring. Therefore, when sound is transmitted to the gasket, for example along the axial direction, the annular body and the extension piece of the gasket will reflect the sound in different directions, that is, diffuse reflection will be formed, which is beneficial to reducing noise. Furthermore, when the gasket is removed from the fixing pin, the friction between the fixing pin and the gasket increases compared to when the gasket is assembled with the fixing pin. Therefore, it helps the thermal insulation and sound insulation materials to be held more stably to the aircraft frame, etc., and the thermal insulation and sound insulation materials are less likely to fall off the fixing assembly, thereby improving the fire resistance of the fixing assembly.

[0017] Furthermore, in the fixing component of this utility model, it is preferable that multiple extension pieces are arranged in a circumferential direction.

[0018] According to the fixing component of this utility model, the gasket can be held more stably in the axial direction to the fixing nail.

[0019] Furthermore, in the fixing assembly of this utility model, it is preferred that the main body of the fixing nail is a hollow cylinder or a solid cylinder.

[0020] The fixing component according to this utility model has greater strength and is less prone to bending compared to a stud with a semi-closed coiled shape, thus reducing the scrap rate.

[0021] Furthermore, in the fixing assembly of this utility model, the gasket preferably includes a first gasket and a second gasket, with the first gasket and the second gasket located on opposite axial sides of the ring sleeve.

[0022] According to the fixing component of this utility model, heat insulation and sound insulation materials can be held on both sides of the aircraft frame, etc. by means of fixing nails.

[0023] Furthermore, in the fixing assembly of this utility model, it is preferred that the fixing pin is made of metal, the ring is made of plastic, and the gasket is made of metal.

[0024] (Utility Model Effect)

[0025] According to this invention, the fixing pin has three or more protrusions on its outer peripheral surface. Therefore, when holding thermal insulation and sound insulation materials such as heat insulation materials to the frame of an aircraft, the position of the gasket can be appropriately adjusted according to the thickness of the thermal insulation and sound insulation materials by engaging the inner peripheral portion of the gasket between the different protrusions. Furthermore, since the multiple protrusions are arranged axially and appear as arcs when viewed circumferentially, the gasket is easy to remove from the fixing pin, suppressing damage to the gasket during removal, thereby facilitating the removal and maintenance of the thermal insulation and sound insulation materials. Attached Figure Description

[0026] Figure 1 This is a side view schematically illustrating the fixing component of an embodiment of the present invention.

[0027] Figure 2 This is a perspective view schematically illustrating the fixing pins and rings included in the fixing components of an embodiment of the present invention.

[0028] Figure 3 This is a top view schematically illustrating the gaskets included in the fixing component of an embodiment of the present invention.

[0029] Figure 4 This is a side sectional view schematically illustrating the gaskets included in the fixing component of an embodiment of the present invention.

[0030] Figure 5 This is a side sectional view illustrating one of the application scenarios of the fixing component according to an embodiment of the present invention.

[0031] (Symbol Explanation)

[0032] 1. Fixing components

[0033] 10 fixing nails

[0034] 11. Protrusions

[0035] 11A First protrusion

[0036] 11B Second protrusion

[0037] 20 rings

[0038] 21 cylindrical body

[0039] 22 Lateral protrusion

[0040] 23. Inner protrusion

[0041] 24 Flanged edge

[0042] 30 gaskets

[0043] 30A First Gasket

[0044] 30B Second Gasket

[0045] 31. Ring-shaped main body

[0046] 32 extension pieces

[0047] K-framework

[0048] C1 First thermal insulation and soundproofing material

[0049] C2 Second thermal insulation and soundproofing material

[0050] P Interframe skin Detailed Implementation

[0051] Below, in conjunction with Figures 1 to 5 The fixing components of the present invention will be described.

[0052] It should be noted that in this application, "axial" refers to the direction of extension of the central axis of the fixing nail, and "radial" and "circumferential" refer to the "radial" and "circumferential" directions with the central axis of the fixing nail as the reference, respectively.

[0053] (Overall structure of the fixed components)

[0054] like Figure 1 As shown, the fixing assembly 1 includes: a fixing pin 10, which has three or more protrusions 11 formed on its outer peripheral surface, the protrusions 11 being arranged axially and appearing arc-shaped when viewed circumferentially; a ring sleeve 20, which is detachably fitted onto the fixing pin 10 and has a cylindrical body 21 and an outer protrusion 22, the cylindrical body 21 through which the fixing pin 10 passes axially, and the outer protrusion 22 protruding radially outward from the cylindrical body 21; and a gasket 30, which is detachably fitted onto the fixing pin 10 at a different position from the ring sleeve 20, the inner peripheral portion engaging between two axially adjacent protrusions 11, and being able to release the engagement through elastic deformation.

[0055] Here, as Figure 1 As shown, the gasket 30 includes a first gasket 30A and a second gasket 30B, which are located on opposite sides of the ring sleeve 20 along the axial direction.

[0056] (Structure of the fixing pin)

[0057] As described above, the fixing pin 10 has a plurality of protrusions 11 formed on its outer peripheral surface.

[0058] Here, as Figure 1 As shown, the plurality of protrusions 11 each include a plurality of protrusions arranged at intervals in the circumferential direction.

[0059] Furthermore, the plurality of protrusions 11 each include a first protrusion 11A and a second protrusion 11B located radially opposite to each other and separated by the center of the fixing pin 10. The first protrusions 11A of the plurality of protrusions 11 are arranged in a straight line parallel to the axial direction, and the second protrusions 11B of the plurality of protrusions 11 are arranged in a straight line parallel to the axial direction. When viewed circumferentially, the first protrusions 11A have a shape symmetrical about a straight line extending perpendicularly to the axial direction; similarly, when viewed circumferentially, the second protrusions 11B also have a shape symmetrical about a straight line extending perpendicularly to the axial direction. The roots of two axially adjacent first protrusions 11A can be continuous with each other or separated by a small gap; similarly, the roots of two axially adjacent second protrusions 11B can be continuous with each other or separated by a small gap.

[0060] In addition, such as Figure 2 As shown, the main body of the fixing nail 10 is a hollow cylinder. That is to say, the fixing nail 10 has a through hole that extends along the axial direction.

[0061] In addition, the fixing pin 10 is, for example, made of metal.

[0062] (Ring structure)

[0063] As described above, the ring 20 has a cylindrical body 21 and an outer protrusion 22.

[0064] Here, as Figure 1 and Figure 2 As shown, the cylindrical body 21 is cylindrical, and the outer protrusion 22 is annular and is formed at one end of the cylindrical body 21 along the axial direction.

[0065] In addition, such as Figure 1 and Figure 2 As shown, the ring 20 also has an inner protrusion 23, which extends radially inward from the cylindrical body 21 and engages between two axially adjacent protrusions 11, and can be released by elastic deformation. The inner protrusion 23 is formed, for example, at both ends of the cylindrical body 21 in the axial direction.

[0066] In addition, such as Figure 1 and Figure 2 As shown, the ring 20 also has a flange 24, which is folded radially outward from the other end of the cylindrical body 21 in the axial direction, and its outer diameter is smaller than the outer diameter of the outer protrusion 22. The axial thickness of the flange 24 is smaller than the axial thickness of the outer protrusion 22.

[0067] In addition, such as Figure 1 and Figure 2 As shown, the flange 24 is circular.

[0068] In addition, the ring 20 is, for example, made of plastic.

[0069] (Structure of the gasket)

[0070] As described above, the gasket 30 includes a first gasket 30A and a second gasket 30B.

[0071] Since the first gasket 30A and the second gasket 30B are structurally identical, only gasket 30 will be described here.

[0072] like Figure 3 and Figure 4 As shown, the gasket 30 has an annular body 31 and an extension piece 32. The annular body 31 is annular with an inner hole. The extension piece 32 extends radially inward from the inner hole of the annular body 31, and its front end engages between two axially adjacent protrusions 11. The extension piece 32 elastically deforms in the assembled state of the gasket 30, protruding at an angle relative to the annular body 31 in a manner that the further inward it is, the further away it is from the ring 20. In the state where the gasket 30 is not assembled with the fixing pin 10, the gasket 30 is, for example, planar in shape (that is, the extension piece 32 is coplanar with the annular body 31). Multiple extension pieces 32 are arranged circumferentially. The extension piece 32 has a shape in which the circumferential width decreases as it is further inward.

[0073] In addition, the gasket 30 is, for example, made of metal.

[0074] (An example of an application scenario for fixed components)

[0075] like Figure 4 As shown, with the ring 20 fitted and engaged in the middle of the length direction of the fixing pin 10, the fixing pin 10 is passed through the through hole (pin hole) of the aircraft frame K from one end of the flange 24 side of the ring 20, and the ring 20 is embedded in the through hole so that the frame K is clamped by the outer protrusion 22 and the flange 24 of the ring 20, and the metal fixing pin 10 is prevented from directly contacting the aircraft frame K, thus protecting the through hole of the frame K.

[0076] Here, for example, the outer diameter of the outer protrusion 22 of the ring 20 is much larger than the diameter of the through hole of the frame K, the outer diameter of the cylindrical body 21 of the ring 20 is slightly smaller than the diameter of the through hole of the frame K, and the outer diameter of the flange 24 of the ring 20 is slightly larger than the diameter of the through hole of the frame K.

[0077] Next, the two ends of the fixing nail 10 are penetrated through the mounting holes of the first thermal insulation and sound insulation material C1 covering the frame K and the second thermal insulation and sound insulation material C2 attached to the inter-frame skin P.

[0078] Then, the first gasket 30A and the second gasket 30B are respectively fitted onto the two ends of the fixing nail 10 to clamp the skirt edge of the thermal insulation and sound insulation material layer, thereby connecting the thermal insulation and sound insulation material layers to each other and fixing them to the frame K.

[0079] (Main effects of this implementation method)

[0080] According to the fixing assembly 1 of this embodiment, the fixing pin 10 has three or more protrusions 11 formed on its outer peripheral surface. Therefore, when holding thermal insulation and sound insulation materials such as heat insulation materials to the frame K of an aircraft, the position of the gasket 30 can be appropriately adjusted according to the thickness of the thermal insulation and sound insulation materials by engaging the inner peripheral portion of the gasket 30 between the different protrusions 11. Furthermore, since the multiple protrusions 11 are arranged axially and are arc-shaped when viewed circumferentially, the gasket 30 is easy to remove from the fixing pin 10, suppressing damage to the gasket 30 during removal, thereby facilitating the removal and maintenance of thermal insulation and sound insulation materials.

[0081] Furthermore, according to the fixing assembly 1 of this embodiment, the extension piece 32 of the gasket 30 elastically deforms when the gasket 30 is assembled to the fixing pin 10, and protrudes at an angle relative to the annular body 31 of the gasket 30 in such a way that the closer to the radial inward side, the further away from the ring 20. Therefore, when sound is transmitted to the gasket 30, for example along the axial direction, the annular body 31 and the extension piece 32 of the gasket 30 will reflect the sound in different directions, that is, diffuse reflection will be formed, which is beneficial to reduce noise. Moreover, when the gasket 30 is removed from the fixing pin 10, the friction between the fixing pin 10 and the gasket 30 increases compared to when the gasket 30 is assembled to the fixing pin 10. Therefore, it helps the heat insulation and sound insulation materials to be more stably held to the aircraft frame K, etc., and the heat insulation and sound insulation materials are less likely to fall off the fixing assembly 1, thereby improving the fire resistance of the fixing assembly 1.

[0082] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments.

[0083] For example, in the above embodiment, the main body of the fixing nail 10 is a hollow cylinder, but it is not limited to this. The main body of the fixing nail 10 can also be a solid cylinder or a prism other than a cylinder.

[0084] Furthermore, in the above embodiments, the protrusion 11 includes two protrusions spaced apart in the circumferential direction, but is not limited to this. It may also include three or more protrusions spaced apart in the circumferential direction, or it may include only one protrusion.

[0085] Furthermore, in the above embodiments, the inner protrusion of the ring 20 may be formed only in the middle of the axial direction of the cylindrical body 21, or simultaneously formed at the axial end and the middle of the axial direction of the cylindrical body 21.

[0086] Furthermore, in the above embodiment, the ring 20 has a flange 24, but it is not limited to this and the flange 24 may be omitted.

[0087] Furthermore, in the above embodiments, the gasket 30 may have only one extension piece 32, or it may have multiple extension pieces spaced apart in the circumferential direction.

[0088] In addition, in the above embodiments, the extension piece 32 may be non-coplanar with the annular body 31 and tilted relative to the annular body 31 when the gasket 30 is not assembled with the fixing nail 10.

[0089] In addition, in the above embodiments, only one gasket 30 may be provided.

[0090] It should be understood that within the scope of this utility model, the various parts in the embodiments can be freely combined, or the various parts in the embodiments can be appropriately modified or omitted.

Claims

1. A fastening assembly comprising: Comprising: a fixing nail having three or more protrusions formed on an outer circumferential surface, the protrusions being arranged in an axial direction and having a circular arc shape when viewed in a circumferential direction; a ring sleeve detachably fitted to the fixing nail, having a cylindrical body through which the fixing nail is inserted in the axial direction, and an outer protrusion protruding radially outward from the cylindrical body; and a gasket detachably fitted to the fixing nail at a position different from the ring sleeve, having an inner circumferential portion engaged between two protrusions adjacent in the axial direction, and being elastically deformable to disengage the engagement.

2. The fixing assembly according to claim 1, wherein at least some of the protrusions include a plurality of protrusions arranged at intervals in the circumferential direction.

3. The fixing assembly according to claim 2, wherein the protrusions each include a first protrusion and a second protrusion arranged on opposite sides in a radial direction with respect to a center of the fixing nail, the first protrusions of the protrusions are arranged in a straight line parallel to the axial direction, the second protrusions of the protrusions are arranged in a straight line parallel to the axial direction.

4. The fixing assembly according to claim 1, wherein the ring sleeve further has an inner protrusion, the inner protrusion extends radially inward from the cylindrical body to be engaged between two protrusions adjacent in the axial direction, and is elastically deformable to disengage the engagement.

5. The fixing assembly according to claim 4, wherein the inner protrusion is formed at both ends in the axial direction of the cylindrical body, the outer protrusion is formed at one end in the axial direction of the cylindrical body, the ring sleeve further has a flange portion folded radially outward from the other end in the axial direction of the cylindrical body, and has an outer diameter smaller than that of the outer protrusion.

6. The fixing assembly according to claim 1, wherein the gasket has a ring-shaped body and an extension piece, the extension piece extends radially inward from an inner hole of the ring-shaped body, and has a front end engaged between two protrusions adjacent in the axial direction, the extension piece is elastically deformed in an assembled state of the gasket to be inclined and protrude with respect to the ring-shaped body in a manner that the farther the extension piece is from the ring sleeve, the more the extension piece is inclined radially inward.

7. The fixing assembly according to claim 6, wherein a plurality of extension pieces are arranged in the circumferential direction.

8. The fixing assembly according to claim 1, wherein the body of the fixing nail is a hollow cylinder or a solid cylinder.

9. The fixing assembly according to claim 1, wherein the gasket includes a first gasket and a second gasket, the first gasket and the second gasket are arranged on both sides of the ring sleeve in the axial direction.

10. The fixing assembly according to claim 1, wherein the fixing nail is made of metal, the ring sleeve is made of plastic, the gasket is made of metal.

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