Bilateral fixing assembly

Abstract

Provided is a double-side fixing assembly which can hold heat insulation and sound insulation materials and the like on the two sides of a frame and the like of an aircraft respectively, can reduce assembling and disassembling resistance and can restrain damage during disassembling. The fixing nail is provided with a positioning blocking piece, a clamping tongue piece, a first conical tooth and a second conical tooth, the first conical tooth is located on one side of the positioning blocking piece, the outer diameter is smaller when the first conical tooth is closer to one side, the clamping tongue piece is located on the other side of the positioning blocking piece and can elastically deform in the radial direction, and the clamping tongue piece is located between the first conical tooth and the second conical tooth from the other side to one side; the second conical tooth is located on the other side of the clamping tongue piece, and the outer diameter of the second conical tooth is smaller when the second conical tooth is closer to the other side of the clamping tongue piece; the first gasket is provided with a first pawl part which is provided with a first pawl and can elastically deform in the radial direction to enable the first pawl to be clamped with or separated from the axial end face of the first bevel gear; and the second gasket is provided with a second pawl part which is provided with a second pawl and can elastically deform in the radial direction to enable the second pawl to be clamped with or separated from the axial end face of the second bevel gear.

Description

TECHNICAL FIELD

[0001] The utility model relates to bilateral fixed assembly. BACKGROUND

[0002] In the past, there is a kind of integral plastic stud fastener suitable for the field of aircraft, which is divided into a first part and a second part by a positioning wall in the axial direction, wherein the first part includes a plurality of compressible retaining elements, the plurality of retaining elements are conical and arranged in the axial direction, and the second part includes a flexible tongue and a plurality of compressible retaining elements farther away from the positioning wall than the tongue, the plurality of retaining elements are conical and arranged in the axial direction. When installing, the second part is passed through the through hole of the frame of the aircraft or the like, and the periphery of the through hole is clamped by the tongue and the positioning wall, in this state, the first part and the second part penetrate the thermal insulation sound insulation layer or the like respectively, and the penetrated parts are clamped to the thermal insulation sound insulation layer or the like by penetrating the openings of the gasket smaller than the maximum outer diameter of the retaining elements, so as to realize the fixation of the thermal insulation sound insulation layer or the like relative to the frame of the aircraft or the like (see patent document 1).

[0003] Patent document 1: CN106567878A

[0004] In the above-mentioned integral plastic stud fastener, when installing, the retaining elements of the first part and the second part penetrate the openings of the gasket smaller than the maximum outer diameter of the retaining elements from the small diameter side by extrusion deformation, the resistance is large, on the other hand, when disassembling, the opening of the gasket penetrated by the first part and the second part needs to first pass the part with the largest outer diameter of the retaining elements, the resistance is larger, and it is easy to cause damage to the fastener, gasket and the like. INVENTION CONTENTS

[0005] The utility model is completed in view of the above problems, and aims to provide a kind of bilateral fixed assembly, can keep thermal insulation sound insulation material or the like on the two sides of the frame of aircraft or the like, can reduce the installation and removal resistance, and can inhibit the damage when disassembling.

[0006] In order to achieve the above object, the utility model provides a bilateral fixed component, include: fixed nail, the fixed nail has fixed nail positioning baffle, carding tongue piece, first bevel gear and second bevel gear, the fixed nail positioning baffle in the axial halfway of fixed nail protrude towards the radial outside, the first bevel gear is located in the axial one side of fixed nail positioning baffle, and has axial end face and the outer periphery from this axial end face towards one side shrinkage of diameter, the carding tongue piece is located in the axial other side of fixed nail positioning baffle, can be elastically deformed in the radial, and from other side towards one side, towards the direction away from the center line of fixed nail, the second bevel gear is located in the axial other side of carding tongue piece, and has axial end face and the outer periphery from this axial end face towards other side shrinkage of diameter, first gasket, the first gasket can be detachably sheathed in fixed nail, and has first pawl part, and the first pawl part includes the first pawl with axial end face and the inner periphery from this axial end face towards other side expansion of diameter, and can be elastically deformed in the radial to make the axial end face of first pawl and the axial end face of first bevel gear engage or disengage each other, and second gasket, the second gasket can be detachably sheathed in fixed nail, and has second pawl part, and the second pawl part includes the second pawl with axial end face and the inner periphery from this axial end face towards one side expansion of diameter, and can be elastically deformed in the radial to make the axial end face of second pawl and the axial end face of second bevel gear engage or disengage each other.

[0007] According to the bilateral fixed component of the utility model, when the heat insulation and sound insulation material is kept in the frame of the airplane, the fixed nail is inserted into the through hole of the frame from the other side of the second bevel gear, the fixed nail can smoothly penetrate the through hole of the frame, and the fixed nail positioning baffle and the carding tongue piece can clamp the frame, the bilateral fixed component is not easy to fall off during installation, and when the first gasket and the second gasket are sheathed in the state that the fixed nail penetrates the through hole of the frame, the inclination directions of the inner periphery of the first pawl and the outer periphery of the first bevel gear are the same, the inclination directions of the inner periphery of the second pawl and the outer periphery of the second bevel gear are the same, the first gasket can smoothly move along the first bevel gear, the second gasket can smoothly move along the second bevel gear, the installation resistance is small, after installation, the axial end face of the first pawl of the first gasket can be engaged with the axial end face of the first bevel gear, the axial end face of the second pawl of the second gasket can be engaged with the axial end face of the second bevel gear, a self-locking effect is formed, the heat insulation and sound insulation material can be stably kept in the frame, on the other hand, by elastically deforming the first pawl part of the first gasket to disengage the axial end face of the first pawl from the axial end face of the first bevel gear, and by elastically deforming the second pawl part of the second gasket to disengage the axial end face of the second pawl from the axial end face of the second bevel gear, the dismounting resistance is small, and the dismounting is simple and easy, damage during dismounting can be inhibited, and the bilateral fixed component is protected.

[0008] Further, in the double-side fixing assembly of the utility model, preferably, at least the first bevel gear among the first bevel gear and the first pawl is arranged in plurality in the axial direction, and / or, at least the second bevel gear among the second bevel gear and the second pawl is arranged in plurality in the axial direction.

[0009] According to the double-side fixing assembly of the utility model, different thicknesses of heat insulation and sound insulation materials can be flexibly coped with.

[0010] Further, in the double-side fixing assembly of the utility model, preferably, the locking tongue is arranged in plurality in the axial direction.

[0011] According to the double-side fixing assembly of the utility model, different thicknesses of frames can be flexibly coped with.

[0012] Further, in the double-side fixing assembly of the utility model, preferably, the locking tongue is arranged in plurality in the axial direction.

[0013] According to the double-side fixing assembly of the utility model, more locking tongues can be arranged in the axial direction, so that different thicknesses of frames can be more flexibly coped with.

[0014] Further, in the double-side fixing assembly of the utility model, preferably, the first bevel gear and the second bevel gear are formed at the same position of the circumferential direction of the fixing nail.

[0015] According to the double-side fixing assembly of the utility model, when installing and dismounting, the part other than the first bevel gear and the second bevel gear of the fixing nail can be gripped, so that injury is not easy.

[0016] Further, in the double-side fixing assembly of the utility model, preferably, the locking tongue is formed in the range provided with the first bevel gear and the second bevel gear in the circumferential direction of the fixing nail.

[0017] According to the double-side fixing assembly of the utility model, when installing and dismounting, the circumferential position of the locking tongue can be conveniently determined according to the first bevel gear and the second bevel gear, so that whether the locking tongue is suitable or not can be conveniently determined.

[0018] Further, in the double-side fixing assembly of the utility model, preferably, the first gasket has a first open ring part in the center part, the first open ring part is in the form of an open ring surrounding the fixing nail when viewed in the axial direction of the fixing nail, the first pawl part is arranged at the opening of the first open ring part and can elastically rotate relative to the first open ring part around an axis extending transversely to the axial direction of the fixing nail and located at the other side of the first open ring part, the first gasket further has a first gasket side positioning baffle protruding from the end of the other side of the first open ring part and the first pawl part towards the radial outside, the second gasket has a second open ring part in the center part, the second open ring part is in the form of an open ring surrounding the fixing nail when viewed in the axial direction of the fixing nail, the second pawl part is arranged at the opening of the second open ring part and can elastically rotate relative to the second open ring part around an axis extending transversely to the axial direction of the fixing nail and located at the side of the second open ring part, and the second gasket further has a second gasket side positioning baffle protruding from the end of the side of the second open ring part and the second pawl part towards the radial outside.

[0019] According to the double-side fixing assembly of the utility model, the first gasket and the second gasket are simple in structure and easy to manufacture.

[0020] Further, in the double-side fixing assembly of the utility model, preferably, the first pawl part is in the form of a plate as a whole and extends from the other side towards the side, towards the direction close to the center line of the fixing nail, and the second pawl part is in the form of a plate as a whole and extends from the side towards the other side, towards the direction close to the center line of the fixing nail.

[0021] According to the double-side fixing assembly of the utility model, when installed, the engagement force of the first pawl and the first bevel gear and the engagement force of the second pawl and the second bevel gear can be increased, so that the self-locking effect is improved.

[0022] Further, in the double-side fixing assembly of the utility model, preferably, the first gasket further has a first unlocking piece arranged at the first pawl part and extending from the other side towards the side, towards the direction away from the center line of the fixing nail, and the second gasket further has a second unlocking piece arranged at the second pawl part and extending from the side towards the other side, towards the direction away from the center line of the fixing nail.

[0023] According to the double-side fixing assembly of the utility model, when disassembled, the first unlocking piece can be used to conveniently release the engagement of the axial end surface of the first pawl and the axial end surface of the first bevel gear, and the second unlocking piece can be used to conveniently release the engagement of the axial end surface of the second pawl and the axial end surface of the second bevel gear.

[0024] Further, in the double-side fixing assembly of the utility model, preferably, the first gasket further has a first flange, the first flange is folded from the outer periphery of the first gasket towards the one side and extends from the other side towards the one side in a direction away from the center line of the fixing nail, and the second gasket further has a second flange, the second flange is folded from the outer periphery of the second gasket towards the other side and extends from the one side towards the other side in a direction away from the center line of the fixing nail.

[0025] According to the double-side fixing assembly of the utility model, when installing and dismounting, the first gasket and the second gasket can be conveniently moved by means of the first flange and the second flange, and the edge deformation of the first gasket and the second gasket caused by stress can be avoided.

[0026] (utility model effect)

[0027] According to the utility model, when the heat insulation and sound insulation material and the like is kept on the frame and the like of the airplane, the fixing nail can be smoothly penetrated through the through hole of the frame and the like by inserting the fixing nail from the other side where the second bevel gear is located into the through hole of the frame and the like, and the frame and the like is clamped by the positioning baffle and the locking tongue of the fixing nail, the double-side fixing assembly is not easy to fall off in the middle of installation, and when the first gasket and the second gasket are sleeved in the state that the fixing nail is penetrated through the through hole of the frame and the like, the inclination directions of the inner periphery surface of the first pawl and the outer periphery surface of the first bevel gear are the same, the inclination directions of the inner periphery surface of the second pawl and the outer periphery surface of the second bevel gear are the same, the first gasket can be smoothly moved along the first bevel gear, the second gasket can be smoothly moved along the second bevel gear, the installation resistance is small, after installation in place, the axial end surface of the first pawl of the first gasket can be engaged with the axial end surface of the first bevel gear, the axial end surface of the second pawl of the second gasket can be engaged with the axial end surface of the second bevel gear, a self-locking effect is formed, the heat insulation and sound insulation material and the like can be stably kept on the frame and the like, on the other hand, by elastically deforming the first pawl part of the first gasket to release the engagement between the axial end surface of the first pawl and the axial end surface of the first bevel gear, and elastically deforming the second pawl part of the second gasket to release the engagement between the axial end surface of the second pawl and the axial end surface of the second bevel gear, the dismounting resistance is small, simple and easy, the damage during dismounting can be inhibited, and the double-side fixing assembly is protected. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view schematically showing the double-side fixing assembly of the embodiment of the utility model.

[0029] Figure 2 is a perspective view schematically showing the fixing nail included in the double-side fixing assembly of the embodiment of the utility model.

[0030] Figure 3is a perspective view of a first gasket (second gasket) included in the double-sided fixing assembly according to the embodiment of the present application.

[0031] Figure 4 is a side view of a first gasket (second gasket) included in the double-sided fixing assembly according to the embodiment of the present application.

[0032] Figure 5 is a cross-sectional view along the D-D arrow of Figure 3 .

[0033] Figure 6 is a cross-sectional view of an example of an application scenario of the double-sided fixing assembly according to the embodiment of the present application.

[0034] (Symbol Description)

[0035] 1 Double-sided fixing assembly

[0036] 10 Fixing nail

[0037] 11 First bevel gear

[0038] 12 Second bevel gear

[0039] 13 Fixing nail positioning stopper

[0040] 14 Clamping tongue

[0041] 20 First gasket

[0042] 21 First pawl portion

[0043] 211 First pawl

[0044] 22 First open ring portion

[0045] 23 First gasket side positioning stopper

[0046] 24 First unlocking piece

[0047] 25 First flange

[0048] 30 Second gasket

[0049] 31 Second pawl portion

[0050] 311 Second pawl

[0051] 32 Second open ring portion

[0052] 33 Second gasket side positioning stopper

[0053] 34 Second unlocking piece

[0054] 35 Second flange

[0055] a. One side of the fixing pin along its axial direction

[0056] b. The other side of the fixing pin along its axial direction

[0057] K-framework

[0058] C1 First thermal insulation and soundproofing material

[0059] C2 Second thermal insulation and soundproofing material

[0060] P Interframe skin Detailed Implementation

[0061] Below, in conjunction with Figures 1 to 6 The bilateral fixing component of the present invention will be described.

[0062] (Overall structure of the bilateral fixing components)

[0063] like Figures 1 to 5 As shown, the double-sided fixing assembly 1 includes a fixing pin 10, a first washer 20, and a second washer 30. The fixing pin 10 has a fixing pin positioning baffle 13, a locking tongue 14, a first conical tooth 11, and a second conical tooth 12. The fixing pin positioning baffle 13 protrudes radially outward midway along the axial direction of the fixing pin 10. The first conical tooth 11 is located on one side a of the fixing pin positioning baffle 13 in the axial direction of the fixing pin 10 and has an axial end face and a tapered outer peripheral surface extending from this axial end face toward side a. The locking tongue 14 is located on the other side b of the fixing pin positioning baffle 13 in the axial direction of the fixing pin 10, and is elastically deformable in the radial direction of the fixing pin 10, extending from side b toward side a, away from the centerline of the fixing pin 10 (see reference). Figure 1 Extending in the direction of ), the second bevel tooth 12 is located on the other side b of the fixing pin positioning plate 13 in the axial direction of the fixing pin 10, and has an axial end face and an outer peripheral surface that narrows from the axial end face toward the other side b. The first washer 20 is detachably fitted onto the fixing pin 10 and has a first pawl portion 21, which includes a first pawl 211 having an axial end face and an inner peripheral surface that widens from the axial end face toward the other side b, and can be elastically deformed in the radial direction to engage or disengage the axial end face of the first pawl 211 with the axial end face of the first bevel tooth 11. The second washer 30 is detachably fitted onto the fixing pin 10 and has a second pawl portion 31, which includes a second pawl 311 having an axial end face and an inner peripheral surface that widens from the axial end face toward one side a, and can be elastically deformed in the radial direction to engage or disengage the axial end face of the second pawl 311 with the axial end face of the second bevel tooth 12.

[0064] (Structure of the fixing pin)

[0065] The fixing nail 10 is, for example, an integrally molded part made of non-metallic materials such as nylon.

[0066] Here, as shown in Figure 2 the fixing nail 10 has a columnar fixing nail body, a fixing nail positioning stopper 13 protruding from the fixing nail body toward the radial direction outside, and a locking tongue 14 bent from the fixing nail body toward the radial direction outside and the one side a at a position on the other side b than the fixing nail positioning stopper 13. The fixing nail body is formed with a first taper tooth 11 and a second taper tooth 12. The first taper tooth 11 is formed with a plurality of teeth in the axial direction of the fixing nail 10. The second taper tooth 12 is also formed with a plurality of teeth in the axial direction of the fixing nail 10. The locking tongue 14 is also formed with a plurality of teeth in the axial direction of the fixing nail 10. Specifically, the fixing nail body is formed with a first groove portion and a second groove portion extending in a straight line in the axial direction, the first groove portion is on the one side a than the fixing nail positioning stopper 13, and the inside is formed with a plurality of first taper teeth 11, and the second groove portion is on the other side b than the fixing nail positioning stopper 13, and the inside is formed with a plurality of locking tongues 14 and a plurality of second taper teeth 12. More specifically, the first taper tooth 11 and the second taper tooth 12 are formed at the same position in the circumferential direction of the fixing nail 10. In the portion of the fixing nail 10 corresponding to the first groove portion and the second groove portion in the axial direction, the outer peripheral surface of the portion other than the first groove portion and the second groove portion is a cylindrical surface. The first taper tooth 11 and the second taper tooth 12 are located inside the circle where the above-mentioned cylindrical surface is located, the base end of the locking tongue 14 is located inside the circle where the above-mentioned cylindrical surface is located, and the front end of the locking tongue 14 protrudes to the outside of the circle where the above-mentioned cylindrical surface is located in a state not subjected to an external force. The cross section of the first taper tooth 11 cut in the axial direction of the fixing nail 10 is substantially triangular. The outer peripheral surface of the first taper tooth 11 is a plane inclined with respect to the axial direction of the fixing nail 10, and the axial end surface of the first taper tooth 11 on the other side b is a plane perpendicular to the axial direction of the fixing nail 10. The outer peripheral surface of the second taper tooth 12 is a plane inclined with respect to the axial direction of the fixing nail 10, and the axial end surface of the second taper tooth 12 on the one side a is a plane perpendicular to the axial direction of the fixing nail 10. The locking tongue 14 is substantially rectangular in shape. Two locking tongues 14 adjacent in the axial direction of the fixing nail 10 are staggered in the circumferential direction of the fixing nail 10. Both ends of the axial direction of the fixing nail body are formed in a front end tapered shape.

[0067] Further, as shown in Figure 2 the fixing nail positioning stopper 13 is formed at the axial intermediate position of the fixing nail body. That is, the length of the portion of the fixing nail body on the one side a than the fixing nail positioning stopper 13 is the same as the length of the portion of the fixing nail body on the other side b than the fixing nail positioning stopper 13. When viewed in the axial direction of the fixing nail 10, the fixing nail positioning stopper 13 is in the form of a circular ring.

[0068] (Structure of the first gasket)

[0069] The first gasket 20 is, for example, an integrally formed member injection molded from a non-metallic material such as nylon.

[0070] Here, as Figures 3 to 5 As shown, the first gasket 20 has a cylindrical central portion and an annular extension extending radially outward from the central portion. A portion of the circumferential direction of the central portion is formed by a first pawl portion 21. Specifically, the central portion of the first gasket 20 has a first pawl portion 21, a first open ring portion 22, and a first gasket side positioning baffle 23. That is, the first gasket 20 has a first pawl portion 21, a first open ring portion 22, and a first gasket side positioning baffle 23. The first pawl portion 21 has a plurality of first pawls 211 arranged in the axial direction of the fixing pin 10. The cross-section of the first pawl 211 along the axial direction of the fixing pin 10 is approximately triangular. The first open ring portion 22 is an open ring surrounding the fixing pin 10 when viewed along the axial direction of the fixing pin 10. The first pawl portion 21 is provided at the opening of the first open ring portion 22 and can elastically rotate relative to the first open ring portion 22 about an axis that extends intersecting the axial direction of the fixing pin 10 and is located on the other side b of the first open ring portion 22. The first pawl portion 21 is plate-shaped and extends from the other side b toward one side a, toward the center line of the fixing pin 10. The first gasket side positioning baffle 23 protrudes radially outward from the end of the first opening ring portion 22 and the other side b of the first pawl portion 21.

[0071] In addition, such as Figure 5 As shown, the center portion of the first gasket 20 also has a first unlocking piece 24. That is, the first gasket 20 also has a first unlocking piece 24. The first unlocking piece 24 is provided on the first pawl portion 21 and extends from the other side b toward one side a in a direction away from the center line of the fixing pin 10. The first unlocking piece 24 is preferably provided at the end of one side a of the first pawl portion 21.

[0072] In addition, such as Figures 3 to 5 As shown, the annular extension of the first gasket 20 also has a first flange 25. That is, the first gasket 20 also has a first flange 25. The first flange 25 is folded from the outer periphery of the first gasket 20 toward one side a. Specifically, the first flange 25 is folded from the outer periphery of the annular extension of the first gasket 20 toward one side a, and extends from the other side b toward one side a in a direction away from the center line of the fixing pin 10.

[0073] (Structure of the second gasket)

[0074] The second gasket 30 is, for example, an integrally molded part made of non-metallic materials such as nylon.

[0075] Here, the second gasket 30 is exactly the same as the first gasket 20 in shape and structure. For example... Figures 3 to 5As shown, the second gasket 30 has a cylindrical central portion and an annular extension extending radially outward from the central portion. A circumferential portion of the central portion is formed by a second pawl portion 31. Specifically, the central portion of the second gasket 30 has a second pawl portion 31, a second open ring portion 32, and a second gasket-side positioning baffle 33. That is, the second gasket 30 has a second pawl portion 31, a second open ring portion 32, and a second gasket-side positioning baffle 33. The second pawl portions 31 have a plurality of second pawls 311 arranged in the axial direction of the fixing pin 10. The cross-section of the second pawl 311 along the axial direction of the fixing pin 10 is approximately triangular. The second open ring portion 32 is an open ring surrounding the fixing pin 10 when viewed along the axial direction of the fixing pin 10. The second pawl portion 31 is provided at the opening of the second open ring portion 32 and can elastically rotate relative to the second open ring portion 32 about an axis that extends intersecting the axial direction of the fixing pin 10 and is located on one side a of the second open ring portion 32. The second pawl portion 31 is plate-shaped and extends from one side a toward the other side b, toward the center line of the fixing pin 10. The second gasket side positioning baffle 33 protrudes radially outward from the end of the second opening ring portion 32 and the second pawl portion 31 on one side a.

[0076] In addition, such as Figure 5 As shown, the center portion of the second gasket 30 also has a second unlocking piece 34. That is, the second gasket 30 also has a second unlocking piece 34. The second unlocking piece 34 is provided on the second pawl portion 31 and extends from one side a toward the other side b in a direction away from the center line of the fixing pin 10. The second unlocking piece 34 is preferably provided at the end of the other side b of the second pawl portion 31.

[0077] In addition, such as Figures 3 to 5 As shown, the annular extension of the second gasket 30 also has a second flange 35. That is, the second gasket 30 also has a second flange 35. The second flange 35 is folded from the outer periphery of the second gasket 30 toward the other side b. Specifically, the second flange 35 is folded from the outer periphery of the annular extension of the second gasket 30 toward the other side b, and extends from one side a toward the other side b in a direction away from the center line of the fixing pin 10.

[0078] (An example of an application scenario for a bilaterally fixed component)

[0079] like Figure 6As shown, after the fixing pin 10 of the double-sided fixing assembly 1 passes through the through hole (pin hole) of the aircraft frame K, the frame K is held (or clamped) together by the fixing pin positioning baffle 13 and the locking tongue 14. Then, the two ends of the fixing pin 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. Then, the first gasket 20 and the second gasket 30 of the double-sided fixing assembly 1 are respectively fitted onto one side a and the other side b of the fixing pin 10 for clamping, so that the thermal insulation and sound insulation material layers are connected to each other and fixed on the frame K.

[0080] (Main effects of this implementation method)

[0081] According to the double-sided fixing assembly 1 of this embodiment, when holding thermal insulation and sound insulation materials such as heat insulation materials to the frame of an aircraft, the fixing pin 10 can be smoothly inserted through the through hole of the frame such as the frame by inserting the fixing pin 10 from the other side b where the second bevel tooth 12 is located. The fixing pin 10 can be clamped by the fixing pin positioning baffle 13 and the locking tongue 14, and the double-sided fixing assembly 1 is not easy to fall off during installation. Furthermore, when the first washer 20 and the second washer 30 are fitted with the fixing pin 10 through the through hole of the frame such as the frame, the inclination direction of the inner peripheral surface of the first pawl 211 and the outer peripheral surface of the first bevel tooth 11 is the same, and the inclination direction of the inner peripheral surface of the second pawl 311 and the outer peripheral surface of the second bevel tooth 12 is the same. The first washer 20 can move smoothly along the first bevel tooth 11, and the second washer 30 can move smoothly along the first bevel tooth 12. The two bevel teeth 12 move smoothly with low installation resistance. After installation, the axial end face of the first pawl 211 of the first gasket 20 can engage with the axial end face of the first bevel tooth 11, and the axial end face of the second pawl 311 of the second gasket 30 can engage with the axial end face of the second bevel tooth 12, forming a self-locking effect. This can stably hold the heat insulation and sound insulation materials to the frame, etc. On the other hand, by elastically deforming the first pawl portion 21 of the first gasket 20, the engagement between the axial end face of the first pawl 211 and the axial end face of the first bevel tooth 11 is released. Similarly, by elastically deforming the second pawl portion 31 of the second gasket 30, the engagement between the axial end face of the second pawl 311 and the axial end face of the second bevel tooth 12 is released. This results in low disassembly resistance and ease of disassembly, suppressing damage during disassembly and protecting the double-sided fixing components.

[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 embodiments, the length of the fixing nail 10 can be set appropriately as needed, and the size and spacing of the first conical tooth 11 and the size and spacing of the second conical tooth 12 can also be set appropriately according to the requirements of installation accuracy, etc.

[0084] Furthermore, in the above embodiment, the fixing nail positioning baffle 13 is formed at the axial middle position of the fixing nail body, but it is not limited to this and may also be formed at a position near one side a or a position near the other side b.

[0085] Furthermore, in the above embodiments, the number of the first bevel teeth 11 and the first pawl 211 can be appropriately set as needed, and the number of the second bevel teeth 12 and the second pawl 311 can also be appropriately set as needed.

[0086] Furthermore, in the above embodiments, the first bevel tooth 11 and the second bevel tooth 12 are formed at the same position in the circumferential region of the fixing nail 10, but are not limited to this, and may also be formed at different positions in the circumferential region of the fixing nail 10.

[0087] Furthermore, in the above embodiment, in the portion of the fixing nail 10 that corresponds to the first groove and the second groove in the axial direction, the outer peripheral surface of the portion other than the first groove and the second groove is a cylindrical surface, but it is not limited to this and may also be formed as a prism surface or the like.

[0088] Furthermore, in the above embodiment, the first bevel tooth 11 and the second bevel tooth 12 are located inside the circle where the cylindrical surface formed by the fixing nail 10 is located, but are not limited to this, and may at least partially protrude radially outward from the circle.

[0089] Furthermore, in the above embodiments, the number of locking tongues 14 can be appropriately set according to needs, or only one locking tongue 14 can be set, and the shape of the locking tongue 14 is not limited to a rectangle.

[0090] Furthermore, in the above embodiments, the first gasket 20 may not have the first unlocking piece 24.

[0091] Furthermore, in the above embodiments, the second gasket 30 may also not have a second unlocking piece 34.

[0092] 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 double-sided fixing assembly, characterized in that, include: A fixing pin has a fixing pin positioning baffle, a locking tongue, a first bevel tooth, and a second bevel tooth. The fixing pin positioning baffle protrudes radially outward midway along the axial direction of the fixing pin. The first bevel tooth is located on one side of the fixing pin positioning baffle in the axial direction and has an axial end face and an outer peripheral surface that tapers towards the side from the axial end face. The locking tongue is located on the other side of the fixing pin positioning baffle in the axial direction, is elastically deformable in the radial direction, and extends from the other side towards the first side in a direction away from the centerline of the fixing pin. The second bevel tooth is located on the other side of the locking tongue in the axial direction and has an axial end face and an outer peripheral surface that tapers towards the other side from the axial end face. A first washer, detachably fitted onto the fixing pin, and having a first pawl portion, the first pawl portion including a first pawl having an axial end face and an inner circumferential surface that expands in diameter from the axial end face toward the other side, and capable of elastic deformation in the radial direction to engage or disengage the axial end face of the first pawl and the axial end face of the first bevel tooth with each other; and The second washer is detachably fitted onto the fixing pin and has a second pawl portion. The second pawl portion includes a second pawl having an axial end face and an inner circumferential surface that expands in diameter from the axial end face toward one side, and is elastically deformable in the radial direction to engage or disengage the axial end face of the second pawl and the axial end face of the second bevel tooth with each other.

2. The bilateral fixing assembly as described in claim 1, characterized in that, At least one of the first bevel teeth and the first pawl is arranged in a plurality of such a manner in the axial direction. And / or, At least one of the second bevel teeth and the second pawl is arranged in a plurality in the axial direction.

3. The bilateral fixing assembly as described in claim 1, characterized in that, The locking tongues are arranged in multiple ways along the axial direction.

4. The bilateral fixing assembly as described in claim 3, characterized in that, The two adjacent locking tongues in the axial direction are offset in the circumferential direction of the fixing pin.

5. The bilateral fixing assembly as claimed in claim 1, characterized in that, The first bevel tooth and the second bevel tooth are formed at the same position in the circumferential region of the fixing pin.

6. The bilateral fixing assembly as claimed in claim 5, characterized in that, The locking tongue is formed in the circumferential direction of the fixing pin within the area where the first conical tooth and the second conical tooth are provided.

7. The bilateral fixing assembly as claimed in claim 1, characterized in that, The first gasket has a first open ring portion at its center, which, when viewed along the axial direction of the fixing pin, forms an open ring surrounding the fixing pin. The first pawl portion is located at the opening of the first open ring portion, and can elastically rotate relative to the first open ring portion about an axis that extends intersecting the axis of the fixing pin and is located on the other side of the first open ring portion. The first gasket also has a first gasket-side positioning baffle that protrudes radially outward from the other end of the first opening ring portion and the first pawl portion. The second washer has a second open ring portion at its center, which, when viewed along the axial direction of the fixing pin, forms an open ring surrounding the fixing pin. The second pawl portion is located at the opening of the second open ring portion, and can elastically rotate relative to the second open ring portion about an axis that extends intersecting the axial direction of the fixing pin and is located on one side of the second open ring portion. The second gasket also has a second gasket-side positioning baffle that protrudes radially outward from the end of one side of the second opening ring portion and the second pawl portion.

8. The bilateral fixing assembly as claimed in claim 7, characterized in that, The first pawl portion is plate-shaped and extends from the other side toward the first side in a direction close to the center line of the fixing pin. The second pawl portion is plate-shaped and extends from one side toward the other side toward the center line of the fixing pin.

9. The bilateral fixing assembly as claimed in claim 7, characterized in that, The first gasket also has a first unlocking tab, which is disposed on the first pawl portion and extends from the other side toward the first side in a direction away from the center line of the fixing pin. The second pad also has a second unlocking piece, which is disposed on the second pawl portion and extends from one side toward the other side in a direction away from the center line of the fixing pin.

10. The bilateral fixing assembly as claimed in claim 7, characterized in that, The first washer also has a first flange that folds from the outer periphery of the first washer toward one side and extends from the other side toward the first side in a direction away from the centerline of the fixing pin. The second gasket also has a second flange that folds from the outer periphery of the second gasket toward the other side and extends from one side toward the other side in a direction away from the center line of the fixing pin.

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