Single-thread hexagon nut for fixing automobile fuel tank heat insulation plate

Abstract

The utility model relates to a single-thread hexagon nut for fixing a thermal baffle of an automobile fuel tank, which belongs to the technical field of fasteners and comprises a nut body (1), the nut body (1) is annular, and the assembly surface of the nut body (1) is a plane; a mounting part (2) is arranged on the inner ring of the nut body (1), and a flange (3) is arranged on the outer ring of the nut body (1). Compared with the prior art, the nut has the advantages that the assembling surface of the nut is a plane, so that uniform stress can be ensured, and the phenomena of deformation, screw loosening and collapse during assembling are avoided; the nut is further provided with a flanging, so that the surface of the oil tank heat shield can be prevented from being scratched when the nut is installed and rotated; the nut can be positioned and assembled by an automatic torsion gun, is firmly mounted and fixed and is not easy to fall off, and the production efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely relates to a single tooth hexagonal nut for fixing automobile oil tank heat insulation board. BACKGROUND

[0002] At present, the automobile fuel tank is arranged at the lower part of the automobile chassis and is fixed through steel band support, and a heat insulation board is usually additionally arranged on the side close to the automobile heat source for heat insulation, so as to avoid excessive temperature of the fuel tank and improve stability and reliability; the existing nut for quickly assembling and fixing the heat insulation board is trumpet-shaped and has no flat surface, so that deformation and collapse may occur during assembly, and the trumpet-shaped nut may scratch the surface of the oil tank heat shield during installation and rotation, resulting in time-consuming and laborious installation. UTILITY MODEL CONTENTS

[0003] The utility model discloses a single tooth hexagonal nut for fixing automobile oil tank heat insulation board.

[0004] The utility model discloses a single tooth hexagonal nut for fixing automobile oil tank heat insulation board.

[0005] A single tooth hexagonal nut for fixing automobile oil tank heat insulation board, comprising a nut body, the nut body is annular and the assembly surface is a plane.

[0006] The inner ring of the nut body is provided with a mounting portion, and the outer ring of the nut body is provided with a flange.

[0007] Further, the mounting portion and the flange are arranged in the same direction.

[0008] Further, the mounting portion has a threaded sleeve in the middle, and the screwing-in surface of the threaded sleeve is provided with an opening facilitating screw thread screwing-in.

[0009] Further, the distance between the opening first side and the nut body is greater than the distance between the opening second side and the nut body.

[0010] Further, the screwing-in surface of the threaded sleeve between the opening first side and the opening second side is arc transitioned.

[0011] Further, the threaded sleeve is an M5 hexagonal threaded sleeve.

[0012] Further, the flange is an R-angle flange.

[0013] Further, the surface of the hexagonal nut is plated with a 12-25um corrosion-resistant layer. Preferably, the corrosion-resistant layer is a Dacromet plating layer.

[0014] Further, the outer diameter of the assembly surface is at least 25mm.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] (1) the utility model provides a single tooth hexagonal nut for fixing automobile oil tank heat insulation plate, the assembly surface of this nut is plane, can guarantee uniform stress, avoid deformation slip tooth collapse phenomenon when assembling, and this nut is provided with flanging, can avoid scratching the surface of oil tank heat shield when installing and rotating.

[0017] (2) the utility model provides a single tooth hexagonal nut for fixing automobile oil tank heat insulation plate, the nut can be positioned and assembled by automatic torque gun, is fixed firmly and not easy to fall off, production efficiency is improved significantly, and the assembly rhythm is 40% higher than before. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the schematic view of single tooth hexagonal nut for fixing automobile oil tank heat insulation plate in the embodiment;

[0019] Figure 2 It is the top view of Figure 1 ;

[0020] Figure 3 It is the side sectional view of Figure 1 ;

[0021] The reference signs in the drawing are shown: 1 - nut body;2 - installation part;3 - flanging;4 - threaded sleeve;5 - opening;51 - opening first side;52 - opening second side. DETAILED DESCRIPTION

[0022] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiment is implemented under the premise of the technical scheme of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following embodiments.

[0023] EMBODIMENT

[0024] In order to overcome the deformation collapse and scratch the surface of oil tank heat shield of trumpet-shaped nut in prior art when fast assembling, the embodiment provides a single tooth hexagonal nut for fixing automobile oil tank heat insulation plate, and the specific structure is shown in Figures 1-3 , including nut body 1, the nut body 1 is annular and the assembly surface is plane;The inner ring of the nut body 1 is provided with installation part 2, and the outer ring of the nut body 1 is provided with flanging 3. Wherein, the installation part 2 and the flanging 3 are arranged in the same direction.

[0025] In the embodiment, the middle part of the installation part 2 has a threaded sleeve 4, and the screwing surface of the threaded sleeve 4 is provided with an opening 5 for facilitating the screw thread of the bolt.

[0026] In the embodiment, the distance between the first side of the opening 5 and the nut body 1 is greater than the distance between the second side of the opening 5 and the nut body 1; the assembly is performed by a torque gun, the bolt teeth are screwed into the bolt sleeve 4 from the first side 51 of the opening, the installation is labor-saving and easy to replace, and the assembly rhythm is 40% higher than before. However, the prior art must use auxiliary installation tools to realize the assembly of the parts during the assembly process, and the uneven stress distribution of the horn-shaped structure sometimes causes the assembly to slip and needs to be reworked, which seriously affects the production rhythm. In addition, the auxiliary installation tools such as pliers can scratch the surface of the parts during the assembly process, affect the appearance of the parts, and even cause the parts to deform and damage.

[0027] In the embodiment, the screw sleeve 4 has a transition in the arc of the screwing-in surface between the first side of the opening 5 and the second side of the opening 5.

[0028] In the embodiment, the screw sleeve 4 is an M5 hexagonal threaded sleeve.

[0029] In the embodiment, the flange 3 is an R-angle flange, which does not scratch the surface of the oil tank heat shield, and the torque gun automatically installs and fixes firmly and is not easy to fall off.

[0030] In the embodiment, the outer diameter of the assembly surface is at least 25 mm. Since the assembly surface is a plane, the stress area is average, and the deformation, slippage and collapse phenomenon does not occur. However, the prior art is horn-shaped and has no plane, which causes deformation and collapse during assembly, and the surface of the oil tank heat shield is also scratched during installation and rotation.

[0031] In the embodiment, the hexagonal nut surface is plated with a 12-25um corrosion-resistant layer. Preferably, the corrosion-resistant layer is a Dacromet plating layer, which satisfies the neutral salt spray test ≥720H without red rust.

[0032] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical solution of the present application, and according to the technical essence of the present application, still belong to the protection scope of the technical solution of the present application.

Claims

1. A single tooth hexagonal nut for fixing the heat shield of an automobile fuel tank, characterized in that, The nut body (1) is annular and the assembly surface is flat; An installation part (2) is arranged on the inner ring of the nut body (1), and a flange (3) is arranged on the outer ring of the nut body (1); The middle part of the installation part (2) is provided with a threaded sleeve (4), and the screwing surface of the threaded sleeve (4) is provided with an opening (5) for facilitating the screwing of the bolt thread.

2. A single tooth hexagonal nut for fixing the heat insulation plate of the oil tank of a vehicle according to claim 1, characterized in that, The installation part (2) and the flange (3) are arranged in the same direction.

3. The single tooth hexagonal nut for fixing the heat insulation plate of the automobile fuel tank according to claim 1, characterized in that, The distance between the first side of the opening (5) and the nut body (1) is greater than the distance between the second side of the opening (5) and the nut body (1).

4. The single tooth hexagonal nut for fixing the heat shield plate of the automobile fuel tank according to claim 1, wherein The screwing surface of the threaded sleeve (4) between the first side of the opening (5) and the second side of the opening (5) is arc transitioned.

5. The single tooth hexagonal nut for fixing the heat shield plate of the automobile fuel tank according to claim 1, wherein The threaded sleeve (4) is an M5 hexagonal threaded sleeve.

6. A single tooth hexagonal nut for fixing the heat shield of an automobile fuel tank according to claim 1, wherein The flange (3) is an R-angle flange.

7. A single tooth hexagonal nut for fixing the heat shield of the automobile fuel tank according to claim 1, wherein The surface of the hexagonal nut is plated with a 12-25 um corrosion-resistant layer.

8. A single tooth hexagonal nut for fixing the heat shield of an automobile fuel tank according to claim 7, wherein The corrosion-resistant layer is a Dacromet plating layer.

9. A single tooth hexagonal nut for fixing the heat shield of the automobile fuel tank according to claim 1, wherein The outer diameter of the assembly surface is at least 25 mm.

Images