Throttle body fastening structure

Abstract

To easily and securely fasten a throttle body to an intake passage structuring member by using a bolt and a nut. A bolt hole 14a is provided in a flange 13 of an intake manifold 11, and while a recess 13d is provided in a side surface 13c of the flange 13 as a side in relation to the throttle body joint surface 13b, and a nut 15, to which the bolt 16 is to be screwed, is arranged in the recess 13d. With this structure, the throttle body 12 can be fastened to the manifold 11 by screwing the bolt 16, which is inserted into the bolt hole 14a through the throttle body 12, to the nut 15. Since the recess 13d provided with the nut 15 is formed in a direction at a nearly right angle against the bolt 16 inserting direction, even if the bolt 16 fastening force is applied, fall of the nut 15 from the bolt hole 14a is prevented, and since the nut part 15 is held by the recess 13d, necessity of holding the nut 15 with a hand when screwing the bolt 16 is eliminated, and workability is improved.

Description

technical field [0001] The present invention relates to a throttle body fixing structure in which a throttle body is joined to a resin intake passage member and fixed with bolts. Background technique [0002] Patent Document 1 below discloses a fixing structure in which a flange 5 of a resin throttle body 1 and a flange 11 of a resin intake manifold 2 are fixed together with bolts. Metal collars (collar) 9, 10 are buried on the flanges 5, 11 of the two, and the bolts 12 inserted in the metal collars 9 of the flange 5 of the throttle body 1 are screwed into the On the inner thread of the inner peripheral surface of the metal collar 10 of the flange 11 of the intake manifold 2 . [0003] Patent Document 1 Japanese Patent Application Laid-Open No. 11-223163 [0004] However, the metal ferrule 10 having the internal thread of the structure described in Patent Document 1 is composed of a so-called heat-fit nut that is fixed by heating and inserting into a hole formed in the res...

AI Technical Summary

Problems solved by technology

[0004] However, the metal ferrule 10 having the internal thread of the structure described in Patent Document 1 is composed of a so-called heat-fit nut that is fixed by heating and inserting into a hole formed in the resin flange 11. When the insertion is inclined, the bolt 12 cannot be screwed smoothly, or the bonding force with the resin flange 11 is unstable, and the bolt 12 falls off the flange 11 together with the bolt 12.

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