Non-concentric metal gasket for automobile plastic part assembly

Abstract

A non-concentric metal gasket for automobile plastic part assembly comprises a non-concentric metal gasket body, a gasket turnup, a long round hole, a first plastic part, a second plastic part, a bolt and a plate spring nut, the lower portion of the first plastic part is connected with the second plastic part, the upper portion of the first plastic part is connected with the non-concentric metal gasket body, the non-concentric metal gasket body is provided with the gasket turnup, and the first plastic part is provided with a mounting hole. The gasket turnup is matched with the mounting hole, the gasket turnup penetrates through the mounting hole, the gasket turnup is provided with an oblong hole, the oblong hole is matched with the bolt, and the bolt penetrates through the oblong hole. When the structural space is limited and the manufacturing tolerance and the assembly error of the plastic part are large, assembly can still be guaranteed, the problem of assembly efficiency is solved, meanwhile, the problem of crushing of the assembled plastic part is solved, and the use of spring washers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile plastic parts assembly, in particular to a non-concentric metal gasket for automobile plastic parts assembly. Background Art

[0002] Due to the harsh operating environment of commercial vehicles and the long use time, the drivers basically rest while the vehicles do not, and two people take turns driving. Therefore, the assembly strength must be considered at the beginning of the design. Therefore, the fastening between plastic parts is mostly defined as bolt connection. However, due to the characteristics of plastic materials, it is easy to be crushed or even cracked. When using bolts to fasten plastic parts, due to the small contact surface of the bolt head, the area near the bolt head is obviously crushed during tightening, and the fastening strength and the gap and surface difference between the parts after assembly cannot be guaranteed. For the above reasons, bolts are often used in conjunction with large gaskets. However, when the structural space is limited, the manufacturing tolerance and assembly error of plastic parts are large, and the hole center deviation is too large, resulting in the inability to assemble. When fastening plastic parts, when the tightening torque is large, crushing or even cracking of the mounting surface occurs. In addition, if the vehicle is used for a long time without spring washers, the bolts are easy to loosen. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a non-concentric metal gasket for assembling automobile plastic parts, which can ensure assembly even when the manufacturing tolerance and assembly error of the plastic parts are large when the structural space is limited, solves the problem of assembly efficiency, prevents the crushing problem of the assembled plastic parts, and reduces the use of spring washers.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A non-concentric metal gasket for assembling an automobile plastic part comprises a non-concentric metal gasket, a gasket flange, an oblong hole, a plastic part 1, a plastic part 2, a bolt, and a leaf spring nut. The lower part of the plastic part is connected to the plastic part 2, and the upper part of the plastic part 1 is connected to the non-concentric metal gasket. The non-concentric metal gasket has a gasket flange, the plastic part 1 has a mounting hole, the gasket flange is adapted to the mounting hole, the gasket flange passes through the mounting hole, the gasket flange has an oblong hole, the oblong hole is adapted to the bolt, and the bolt passes through the oblong hole.

[0006] The bolt of the utility model sequentially connects a non-concentric metal gasket, a plastic part 1, a plastic part 2 and a leaf spring nut, the bolt is connected to the leaf spring nut through a thread, the leaf spring nut fits the plastic part 2, and the bolt has a bolt head, which fits the non-concentric metal gasket. Beneficial Effects

[0007] The bolt of the utility model cooperates with the leaf spring nut to fix the first plastic part and the second plastic part, and increases the contact force area between the bolt head and the plastic part by adding a non-concentric metal gasket, so as to avoid obvious crushing near the bolt head or even cracking of the mounting surface when the bolt is fastened to the plastic part due to the small contact surface of the bolt head and the large tightening torque, thereby improving the protection of the plastic part, ensuring the fastening strength and the gap and surface difference between the parts after assembly.

[0008] The non-concentric metal gasket of the utility model is provided with a gasket flange, and a gap of 0.3mm is reserved between the gasket flange and the mating part, which can also play the role of a spring gasket (which can reduce costs). When fastening plastic parts, when the tightening torque is large, the gasket flange is intervened for support, which effectively prevents crushing or even cracking, and improves the protection of plastic parts.

[0009] When the structural space is limited and the manufacturing tolerance and assembly error of the plastic parts are large, the oblong hole direction absorbs the manufacturing tolerance and assembly error and can still ensure assembly, thereby solving the assembly efficiency problem, preventing the assembled plastic parts from being crushed and reducing the use of spring washers. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic diagram of a structure of a non-concentric metal gasket assembled with an automobile plastic part.

[0011] Figure 2 The utility model is a front view of a non-concentric metal gasket structure for assembling automobile plastic parts.

[0012] Figure 3 The utility model is a left view of a non-concentric metal gasket structure for assembling automobile plastic parts.

[0013] Figure 4 The utility model is a top view of a non-concentric metal gasket structure for assembling an automobile plastic part.

[0014] Figure 5 The utility model is a cross-sectional view of a non-concentric metal gasket structure for assembling an automobile plastic part.

[0015] Figure 6 This is a cross-sectional view of plastic part 1, plastic part 2, and a non-concentric metal gasket described in the utility model.

[0016] Figure 7 These are two cross-sectional views of plastic part 1, plastic part 2, and a non-concentric metal gasket described in the utility model. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0018] Embodiment 1:

[0019] A non-concentric metal gasket for assembling automobile plastic parts, comprising a non-concentric metal gasket 01, a gasket flange 07, an oblong hole 06, a plastic part 1 02, a plastic part 2 03, a bolt 04, and a leaf spring nut 05. The lower part of the plastic part 1 02 is connected to the plastic part 2 03, and the upper part of the plastic part 1 02 is connected to the non-concentric metal gasket 01. The non-concentric metal gasket 01 has a gasket flange 07, and the plastic part 1 02 has a mounting hole 08. The gasket flange 07 is adapted to the mounting hole 08, and the gasket flange 07 passes through the mounting hole 08. The non-concentric metal gasket 01 is provided with a gasket flange 07, and a gap of 0.3 mm is reserved between the gasket flange 07 and the mating part, which can simultaneously play a role in elasticity. The function of the spring gasket (can reduce costs) is to insert the gasket flange 07 for support when tightening plastic parts under large tightening torque, effectively preventing crushing or even cracking, and improving the protection of plastic parts. The gasket flange 07 has an oblong hole 06, which is adapted to the bolt 04. The bolt 04 passes through the oblong hole 06. When the structural space is limited and the manufacturing tolerance and assembly error of the plastic parts are large, the non-concentric metal gasket 01 rotates automatically, and the direction of the oblong hole 06 absorbs the manufacturing tolerance and assembly error, and still ensures assembly. While solving the assembly efficiency problem, it prevents the crushing of assembled plastic parts and reduces the use of spring washers.

[0020] Embodiment 2:

[0021] The bolt 04 of the utility model sequentially connects the non-concentric metal gasket 01, the plastic part 1 02, the plastic part 2 03 and the leaf spring nut 05. The bolt 04 is connected to the leaf spring nut 05 through a thread. The leaf spring nut 05 fits the plastic part 2 03. The bolt 04 has a bolt head 09. The bolt head 09 fits the non-concentric metal gasket 01. The bolt 04 cooperates with the leaf spring nut 05 to fix the plastic part 1 02 and the plastic part 2 03. By adding the non-concentric metal gasket 01, the contact force area between the bolt head 09 and the plastic part 1 02 is increased to avoid obvious crushing near the bolt head 09 or even cracking of the mounting surface when the bolt 04 is tightened on the plastic part due to the small contact surface of the bolt head 09 and the large tightening torque. The protectiveness of the plastic part is improved to ensure the tightening strength and the gap and surface difference between the parts after assembly.

[0022] Embodiment 3:

[0023] Installation steps: first place plastic part 1 02 on the upper part of plastic part 2 03, then place non-concentric metal gasket 01 on the upper part of plastic part 1 02, and place the gasket flange 07 into the mounting hole 08, then place the leaf spring nut 05 on the lower part of plastic part 2 03, and finally pass the bolt 04 through the oblong hole 06, and connect the non-concentric metal gasket 01, plastic part 1 02, plastic part 2 03, and leaf spring nut 05 in sequence, and the bolt 04 is fastened to the leaf spring nut 05 through the thread, until the leaf spring nut 05 fits with the plastic part 2 03, and the bolt head 09 fits with the non-concentric metal gasket 01, and the installation is completed.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A non-concentric metal gasket for assembling automobile plastic parts, characterized in that : It comprises a non-concentric metal gasket (01), a gasket flange (07), an oblong hole (06), a plastic part 1 (02), a plastic part 2 (03), a bolt (04), and a leaf spring nut (05), wherein the lower part of the plastic part 1 (02) is connected to the plastic part 2 (03), and the upper part of the plastic part 1 (02) is connected to the non-concentric metal gasket (01), the non-concentric metal gasket (01) has a gasket flange (07), the plastic part 1 (02) has a mounting hole (08), the gasket flange (07) is adapted to the mounting hole (08), the gasket flange (07) passes through the mounting hole (08), the gasket flange (07) has an oblong hole (06), the oblong hole (06) is adapted to the bolt (04), and the bolt (04) passes through the oblong hole (06).

2. The non-concentric metal gasket for assembling automobile plastic parts according to claim 1, characterized in that The bolt (04) sequentially connects the non-concentric metal gasket (01), the plastic part 1 (02), the plastic part 2 (03), and the leaf spring nut (05); the bolt (04) is connected to the leaf spring nut (05) through a thread; and the leaf spring nut (05) fits the plastic part 2 (03).

3. The non-concentric metal gasket for assembling automobile plastic parts according to claim 1, characterized in that The bolt (04) has a bolt head (09), and the bolt head (09) fits the non-concentric metal gasket (01).

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