Oil pan mounting bolt

A technology for installing bolts and oil pans, applied in the direction of bolts, screws, nuts, etc., which can solve problems such as easy loosening and uncompensated axial load of bolts

Pending Publication Date: 2021-02-26
DONGFENG MOTOR FASTENER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides an oil pan mounting bolt, which solves the proble

Method used

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  • Oil pan mounting bolt

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Embodiment Construction

[0008] Such as figure 1 As shown, an oil pan installation bolt includes a bolt body. The bolt body is composed of a bolt head 1, a guide part 2, a limit part 3 and a threaded rod part 4 coaxially arranged from the beginning to the end to form a whole. There is a spring 5, the spring limit is limited on the guide part through the limit sleeve 6, the limit part can axially limit the limit sleeve, and the spring can make axial elastic deformation between the bolt head and the limit part ; That is, one end of the spring is against the bolt head, and the other end of the spring is against the limit sleeve; the threaded rod acts as a connection;

[0009] Such as figure 1 As shown, the structure of the limit sleeve 6 is as follows: a cylinder 601, three limit claws 602 are distributed around the upper port of the cylinder, and an annular body 603 is provided on the outer surface of the cylinder; the cylinder can guide Axial sliding on the part; the limit claw is to prevent the cyli...

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Abstract

The invention discloses an oil pan mounting bolt. The oil pan mounting bolt comprises a bolt body, a spring and a limiting sleeve, wherein the bolt body is integrally formed by coaxially arranging a bolt head, a guide part, a limiting part and a threaded rod part in sequence from head to tail; the spring is limited on the guide part through the limiting sleeve; the limiting part can axially limitthe limiting sleeve; the spring can perform axial elastic deformation between the bolt head and the limiting part; and the threaded rod part plays a connecting role. Through elastic deformation of thespring, torque attenuation caused by an oil pan gap can be overcome at each assembly position to form an effective axial fixed load; and even if an oil pan is loosened or an oil pan sealing gasket deforms, axial load compensation can be formed through elastic deformation of the spring, and local oil leakage cannot be caused.

Description

technical field [0001] The invention belongs to the field of fasteners, in particular to an oil pan installation bolt. Background technique [0002] At present, most of the oil pan mounting bolts are ordinary hexagon flange bolts or special stud bolts. The bolts on the flange surface are assembled by one-time tightening. During the assembly, due to the deformation of the oil pan, etc., the false tightening torque is caused, that is, the axial force required for the assembly cannot be reached; the special stud bolts need to be tightened at both ends, and the assembly is complicated, and the assembly is rotated. False moment; During the use of the vehicle, due to the working environment such as vibration, the bolts and nuts are loosened, which in turn causes oil leakage from the oil pan, causing customer complaints. Contents of the invention [0003] The invention provides an oil pan installation bolt, which solves the problem that the existing bolt cannot compensate the ax...

Claims

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Application Information

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IPC IPC(8): F16B39/284F16B39/26F16B35/04F16B5/02F01M11/00
CPCF16B39/284F16B39/26F16B5/0266F16B5/025F16B5/0241F16B35/041F01M2011/0054F01M2011/0066
Inventor 李玉涛
Owner DONGFENG MOTOR FASTENER CO LTD
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