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CN-122014733-A - I-shaped nut, connecting structure and vehicle

CN122014733ACN 122014733 ACN122014733 ACN 122014733ACN-122014733-A

Abstract

The application relates to the technical field of threaded connection, and discloses an I-shaped nut, a connecting structure and a vehicle, wherein the I-shaped nut comprises: the nut shell comprises a cylindrical body, a first flange and a second flange, wherein the first flange and the second flange are arranged at two ends of the cylindrical body, the cylindrical body is provided with an axial through hole, the axial section of the nut shell is I-shaped, the material density of the nut shell is smaller than that of the nut body, and the nut body is embedded into the axial through hole. The application has the advantages of light weight and low cost.

Inventors

  • CAO XIANGQUAN

Assignees

  • 北京车和家汽车科技有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (11)

  1. 1. An i-nut, the i-nut comprising: a nut body (54) having an internal thread, the nut body (54) being made of a metal material; The nut shell comprises a cylindrical body, a first flange (51) and a second flange (52) which are arranged at two ends of the cylindrical body, wherein the cylindrical body is provided with an axial through hole, the axial section of the nut shell is I-shaped, the material density of the nut shell is smaller than that of the nut body (54), and the nut body (54) is embedded into the axial through hole.
  2. 2. The i-nut of claim 1, characterized in that at least one stiffening rib (53) is provided between the first flange (51) and the second flange (52), said stiffening rib (53) extending embedded in the outer wall of the nut body (54).
  3. 3. The i-nut of claim 1, wherein said nut housing is of plastic material and said nut body (54) is inserted into said axial through bore by thermoplastic welding, said thermoplastic welding conditions including a thermoplastic welding temperature of between 180 ℃ and 230 ℃.
  4. 4. The i-nut of claim 3, wherein the conditions for thermoplastic welding include a pressure P = weld area a x pressure coefficient per unit area K x plastic material yield strength σ, K = K avg -2Σ,K avg being an arithmetic average of at least 15 sets K i , where K i ＝P i /(A i ×σ),P i is the actual applied pressure, a i is the cross-sectional area of the metal insert, Σ is the standard deviation of P i .
  5. 5. The i-nut according to claim 1, characterized in that the surface of the first flange (51) and/or the second flange (52) is provided with grooves for placing washers (55).
  6. 6. The connecting structure is characterized by comprising a mounting seat (4), a bolt (6) and the I-shaped nut (5) according to any one of claims 1-5, wherein the mounting seat (4) comprises a base plate and clamping legs (42), one ends of the clamping legs (42) are connected with the base plate, the other ends of the clamping legs are clamped between a first flange (51) and a second flange (52), and the bolt (6) is in threaded connection with a nut body (54) of the I-shaped nut (5).
  7. 7. The connection structure according to claim 6, characterized in that the base plate is provided with a plurality of ribs (41) extending towards the i-nut (5).
  8. 8. The connection according to claim 6, characterized in that a gasket (55) is provided in the groove of the first flange (51) and/or the second flange (52), the compression of the gasket (55) being = (initial thickness-thickness after compression)/initial thickness x 100%.
  9. 9. The connection according to claim 8, characterized in that the volume relation of the gasket (55) and the grooves on the first flange (51) and/or the second flange (52) is V Gasket ring ＜V Groove and V Gasket ring ＝80％～90％V Groove after compression, wherein the gasket (55) volume is V Gasket ring ＝πr 2 H, R is the gasket (55) radius, mm, H is the gasket (55) thickness, mm, the groove volume is V Groove ＝πR 2 H, R is the groove radius, mm, H is the groove depth, mm, and/or A flat gasket is arranged on the gasket (55).
  10. 10. The connecting structure according to claim 6, wherein the leg end face of the bolt (6) extends beyond the I-shaped nut (5) by a length 2-3 times the pitch of the nut body (54), and/or The length of the leg end face of the bolt (6) extending out of the I-shaped nut (5) is more than 3mm and is not contacted with the substrate.
  11. 11. A vehicle, characterized in that a body of the vehicle and a spoiler are connected by a connecting structure according to any one of claims 6-10.

Description

I-shaped nut, connecting structure and vehicle Technical Field The application belongs to the technical field of threaded connection, and particularly relates to an I-shaped nut, a connecting structure and a vehicle. Background Most automobile spoilers and automobile bodies are connected in a combined mode of plastic buckles, locating pins, bolts, nuts and the like, wherein the bolt and nut connecting structure is responsible for most of installation force, the existing bolt and nut connection adopts a T-shaped metal bolt or nut, the T-shaped metal nut of the metal is complex in shape and structure and cannot be formed through one-time cold heading, and the automobile spoilers and automobile bodies are assembled after being formed in a disassembling mode or formed in a machining mode, so that the cost of a bicycle is high, and the automobile spoilers are of an all-metal structure and heavy. Disclosure of Invention The application aims to provide an I-shaped nut, a connecting structure and a vehicle, which have the advantages of light weight and low cost. In order to achieve the above object, an aspect of the present application provides an i-nut including: The nut body is provided with internal threads and is made of metal; the nut shell comprises a cylindrical body, a first flange and a second flange, wherein the first flange and the second flange are arranged at two ends of the cylindrical body, the cylindrical body is provided with an axial through hole, the axial section of the nut shell is I-shaped, the material density of the nut shell is smaller than that of the nut body, and the nut body is embedded into the axial through hole. Optionally, at least one reinforcing rib is arranged between the first flange and the second flange, and the reinforcing rib is embedded into the outer wall of the nut body in an extending mode. Optionally, the nut shell is made of plastic material, the nut body is embedded into the axial through hole in a thermoplastic welding mode, and the thermoplastic welding conditions include: The thermoplastic welding temperature is between 180 ℃ and 230 ℃. Alternatively, the pressure p=weld area a×unit area pressure coefficient k×plastic material yield strength σ, k=k avg-2Σ,Kavg is an arithmetic average of at least 15 sets K i, where K i＝Pi/(Ai×σ),Pi is the actual applied pressure, a i is the cross-sectional area of the metal insert, Σ is the standard deviation of P i. Optionally, the surface of the first flange and/or the second flange is provided with a groove for placing a gasket. The second aspect of the application provides a connecting structure, which comprises a mounting seat, a bolt and the I-shaped nut, wherein the mounting seat comprises a base plate and clamping legs, one ends of the clamping legs are connected with the base plate, the other ends of the clamping legs are clamped between a first flange and a second flange, and the bolt is in threaded connection with a nut body of the I-shaped nut. Optionally, a plurality of ribs extending toward the i-shaped nut are disposed on the base plate. Optionally, a gasket is provided in the groove of the first flange and/or the second flange, and the compression amount of the gasket= (initial thickness-thickness after compression)/initial thickness×100%. Optionally, a flat gasket is arranged on the gasket. Optionally, the volume relationship of the gasket and the groove on the first flange and/or the second flange is V Gasket ring ＜V Groove , and V Gasket ring ＝80％～90％ V Groove after compression, wherein the gasket volume is V Gasket ring ＝πr2 H, R is the gasket radius, mm, H is the gasket thickness, mm, and the groove volume is V Groove ＝πR2 H, R is the groove radius, mm, H is the groove depth, mm. Optionally, the length of the leg end face of the bolt extending out of the I-shaped nut is 2-3 times of the thread pitch of the nut body. Optionally, the leg end surface of the bolt extends beyond the i-nut by a length greater than 3mm and is not in contact with the substrate. A third aspect of the application provides a vehicle, the body of which is connected to a spoiler by means of a connecting structure according to the application. Through the technical scheme, the nut shell is combined with the nut body, and compared with the mode that the T-shaped nut body is riveted with the metal block to form the I-shaped nut by machining in the prior art, the H-shaped nut has the advantages that the overall weight of the I-shaped nut is reduced, and the cost is reduced. Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows. Drawings The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. Other fi