JP2007090997A - Mounting structure of air cleaner duct and mounting method for air cleaner duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of an air cleaner duct facilitating bolt inserting work in a bolt hole and facilitating the positioning work of an air duct. <P>SOLUTION: An air cleaner 1 is mounted to a frame 2 via planar vibration absorbing rubber 3 capable of absorbing vibration in the vertical direction. A middle part of the outside air intake side air duct 5 is mounted and fixed to the frame 2 by a pair of bolts and a nut 61. The tip side of the air duct 5 is attached via an intermediate bracket 9. Bolt holes 52a are formed in a bracket 52 in the air duct 5. Oblong hole shaped bolt insertion holes 91a long in the horizontal direction are formed at two portions of the intermediate bracket 9. Engagement parts 91b for positioning to which shafts 93a of bolts 93 are engaged are formed since the tip side of the air duct 5 is lifted at the upper edge of the substantial center of the longitudinal direction of the air cleaner 1 in the bolt insertion holes 91a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air cleaner duct mounting structure and an air cleaner duct mounting method.

As a conventional air cleaner duct mounting structure, the air cleaner is attached to the vehicle body via a soft mount capable of absorbing vibration in the vertical direction, and the middle part of the air duct connected to the air inlet side of the air cleaner is the vehicle body The air duct is attached and fixed to the front end of the air duct via an intermediate bracket, and one end of the intermediate bracket is fastened and fixed to the vehicle body side bracket with a bolt and nut at one location. The other end is fixed to the air duct side bracket with bolts and nuts at two locations separated in the longitudinal direction of the air duct, and the intermediate bracket side has a bolt insertion hole in the longitudinal direction of the air duct. By forming a long slot, from the slot on the intermediate bracket side A structure in which work is to easily inserting the bolt into the bolt holes formed in the adduct side bracket is known (e.g., see Patent Document 1).
Japanese Utility Model Publication No. 62-26612

  However, in the above-described conventional technology, as described above, the bolt insertion hole on the intermediate bracket side is formed into a long long hole along the longitudinal direction of the air duct, so that the bolt with respect to the bolt hole of the air duct side bracket is formed. Insertion work becomes easy, but after inserting the bolt and screwing it into the nut, it is necessary to first tighten the bolt and nut with the air duct positioned in place, which makes the air duct installation work cumbersome. There was a problem.

  The present invention has been made paying attention to the conventional problems as described above, and an air cleaner duct mounting structure and an air cleaner that facilitate the bolt insertion work into the bolt hole and the air duct positioning work. It aims at providing the attachment method of a duct.

  In order to achieve the above-mentioned object, the air cleaner duct mounting structure according to claim 1 of the present application is an air duct in which the air cleaner is attached to the vehicle body via a soft mount and connected to the air inlet side of the air cleaner. The middle part is attached and fixed to the vehicle body with one bolt and nut, and the front end side of the air duct is fastened and fixed to the vehicle body with bolts and nuts via the air duct side bracket and the vehicle body side bracket. Is a mounting structure of an air cleaner duct configured to be fastened and fixed with bolts and nuts at two locations separated in the longitudinal direction of the air duct with respect to the air duct side bracket, and any one of the vehicle body side bracket and the air duct side bracket Bolt holes are formed in one bracket, while the other bracket A bolt insertion hole having a longer width in the longitudinal direction of the air cleaner than the diameter of the shaft portion of the bolt is formed, and the front end side of the air duct is lifted upward at a substantially central portion in the longitudinal direction of the air cleaner in the bolt insertion hole. A positioning engaging portion with which the shaft portion of the bolt is engaged is formed.

  In the mounting structure of the air cleaner duct according to claim 1, as described above, the bolt hole is formed in one of the bracket on the vehicle body side and the bracket on the air duct side, while the bracket of the air cleaner is formed on the other bracket. A bolt insertion hole whose longitudinal width is wider than the diameter of the bolt shaft portion is formed, and the front end side of the air duct is lifted upward at a substantially central portion in the longitudinal direction of the air cleaner in the bolt insertion hole, so that the bolt shaft portion is engaged. By adopting a structure in which the positioning engaging portion to be joined is formed, when attaching and fixing the front end side of the air duct to the vehicle body, the bolt is inserted into the bolt hole from the bolt insertion hole and screwed into the nut. If it is in the stopped state, the air cleaner's own weight will center on the fastening part in the middle of the air duct with respect to the vehicle body. Since the tip side of the air duct is lifted upward, the shaft portion of the bolt can be easily engaged with the positioning engagement portion of the bolt insertion hole.In this state, by fastening the bolt and nut, The front end side of the air duct can be attached and fixed to the vehicle body via the vehicle body side bracket.

  Therefore, it is possible to obtain an effect that the bolt can be easily inserted into the bolt hole and the air duct can be easily positioned.

  Embodiments of the present invention will be described below with reference to the drawings.

  The mounting structure of the air cleaner duct according to the first embodiment corresponds to the invention described in claims 1, 3, and 5.

  1 is an overall side view showing an air cleaner duct mounting structure according to the first embodiment, FIG. 2 is an enlarged longitudinal sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged view showing an intermediate bracket.

  The air cleaner duct mounting structure of the first embodiment includes an air cleaner 1, a frame 2, a plate-like vibration absorbing rubber 3, an engine side air supply air duct 4, an outside air intake side air duct 5, and an annular vibration absorption. Rubber 6 and 7, cabin 8, and intermediate bracket 9 are provided.

  The air cleaner 1 is a plate-like vibration absorbing rubber capable of absorbing vibration at least in the vertical direction between a mounting bracket 11 provided on the air cleaner 1 and a frame fixing bracket 21 provided on a frame (vehicle body) 2. (Soft mount) It is attached by fastening with bolts and nuts 12 and 22 via 3 respectively.

  The engine-side air supply air duct 4 is a duct connected to the discharge port 1a side of the air cleaner 1 and is connected to the engine.

  The outside air intake-side air duct 5 is connected to the air inlet 1b side of the air cleaner 1, and the tip thereof is disposed at the vehicle body front position.

  The outside air intake side air duct (air cleaner duct) 5 has an annular vibration with respect to a bracket 51 provided on the lower surface of the intermediate part and a frame fixing bracket 23 provided on the vehicle body frame (vehicle body) 2. The bolts and nuts 61 are attached and fixed via the absorption rubber 6.

  Further, the front end side of the outside air intake side air duct 5 is attached and fixed via an intermediate bracket 9 between a bracket 52 provided on the top surface of the front end side and a cabin fixing bracket 81 provided on the cabin (vehicle body) 8. ing.

  That is, the intermediate bracket 9 is formed in a substantially inverted T shape composed of a horizontal portion 91 and a vertical portion 92, and an annular vibration absorbing rubber 7 between the upper end portion of the vertical portion 92 and the cabin fixing bracket 81 is formed. It is attached and fixed by one bolt and nut 71 through the.

  Further, bolt holes 52a and 52a are formed at two positions separated in the horizontal direction at the upper end of the bracket 52 in the outside air intake side air duct 5, and weld nuts 52b and 52b in a fixed state are provided on the back side thereof. It has been.

On the other hand, the horizontal portion 91 of the intermediate bracket 9 has long bolt-like bolt insertion holes 91a, 91a that are long in the horizontal direction around the bolt holes 52a, 52a (wider than the diameters of the shaft portions 93a, 93a of the bolts 93, 93). Is formed, and at the upper edge of the central portion of the bolt insertion holes 91a, 91a, the engaging portions for positioning are engaged with the shaft portions 93a, 93a of the bolts 93, 93 which are screwed into the weld nuts 52b, 52b. Portions 91b and 91b are formed.
The cabin side bracket 81 and the intermediate bracket 9 constitute a vehicle body side bracket as claimed.

  Next, functions and effects of the first embodiment will be described.

First, a method for attaching the air cleaner duct will be described based on a procedure for attaching the air cleaner 1 and the outside air intake side air duct 5.
<Air cleaner installation process>

By fastening with bolts and nuts 12 and 22 via a plate-like vibration absorbing rubber 3 between a mounting bracket 11 provided on the air cleaner 1 and a frame fixing bracket 21 provided on the frame (vehicle body) 2. Install.
<Outside air intake side air duct installation process>

The outside air intake side air duct 5 is fitted and fixed to the air inlet 1b side of the air cleaner 1.
<Outside air intake side air duct middle part installation process>

The bracket 51 provided on the lower surface of the midway part of the outside air intake side air duct 5 and the frame fixing bracket 23 provided on the vehicle body frame (vehicle body) 2 are connected by a single bolt / nut 61 via an annular vibration absorbing rubber 6. Install and fix.
<Intermediate bracket mounting process>

The upper end portion of the vertical portion 92 in the intermediate bracket 9 and the cabin fixing bracket 8 are attached and fixed with a single bolt / nut 71 via an annular vibration absorbing rubber 7.
<Cabin assembly process for frame>

The cabin 8 is assembled and fixed to the frame 2.
<Outside air intake side air duct tip side installation process>

  First, bolts 93 and 93 are inserted into the bolt holes 52a and 52a formed in the bracket 52 in the outside air intake side air duct 5 from the long hole-like bolt insertion holes 91a and 91a formed in the horizontal portion 91 of the intermediate bracket 9. When the weld nuts 52b and 52b are screwed and temporarily fixed, the outside air intake is centered on the bolts and nuts 61 that serve as fastening and fixing portions in the middle of the outside air intake side air duct 5 with respect to the frame 2 due to the weight of the air cleaner 1. By lifting the tip end side of the side air duct 5 upward, the shaft portions 93a, 93a of the bolts 93, 93 can be engaged with the positioning engaging portions 91b, 91b of the bolt insertion holes 91a, 91a. Then, tighten the bolts 93 and 93 to the weld nuts 52b and 52b. And it allows the distal end side of the outside-air intake side air duct 5 via the intermediate bracket 9 may be fixedly attached to the cabin 8.

  Thus, the attachment of the cleaner 1 and the outside air intake side air duct 5 is completed.

  As described above in detail, in the air cleaner duct mounting structure and mounting method according to the first embodiment, as described above, the plate-like vibration that allows the air cleaner 1 to absorb vibrations in the vertical direction with respect to the frame 2. The outside air intake side air duct 5 is attached to and fixed to the frame 2 via an annular vibration absorbing rubber 6 with a single bolt / nut 61 and the outside air intake side air duct. In the mounting structure of the air cleaner duct configured such that the front end side of 5 is attached via the intermediate bracket 9, bolt holes 52 a and 52 a are formed in the bracket 52 in the outside air intake side air duct 5, while 2 of the intermediate bracket 9. Long hole-like bolt insertion holes 91a, 91a are formed in the place in the horizontal direction. Positioning engagement portion with which the shaft portions 93a, 93a of the bolts 93, 93 are engaged when the front end side of the outside air intake side air duct 5 is lifted upward to the upper edge of the air cleaner 1 in the longitudinal direction in the through holes 91a, 91a. By adopting a configuration in which 91b and 91b are formed, the bolts 52 and 52a can be easily inserted into the bolt holes 52a and 52a, and the outside air intake-side air duct 5 can be easily positioned. Is obtained.

  Next, another embodiment will be described. In the description of the other embodiments, the same components as those of the first embodiment are not shown, or the same reference numerals are given and the description thereof is omitted, and only the differences are described.

  The second embodiment shows a modified example of the air cleaner duct mounting structure in the first embodiment. As shown in the enlarged view of FIG. 4, the positioning of the elongated hole insertion holes 91a, 91a is performed. This embodiment is different from the first embodiment in that guide convex portions 91c and 91c projecting in the direction of the positioning engaging portions 91b and 91b are formed at portions facing the engaging portions 91b and 91b. .

  Therefore, in the second embodiment, the same effect as in the first embodiment can be obtained, and the shaft portions 93a, 93a of the bolts 93, 93 with respect to the positioning engaging portions 91b, 91b along the guide convex portions 91c, 91c can be obtained. An additional effect is obtained in that the engagement can be more easily performed along the guide convex portions 91c and 91c.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and the present invention can be applied even if there is a design change or the like without departing from the gist of the present invention. included.

  For example, in the embodiment, bolt holes 52 a and 52 a are formed in the bracket 52 in the outside air intake side air duct 5, while long hole insertion holes 91 a and 91 a that are long in the horizontal direction are formed in two places of the intermediate bracket 9. However, conversely, bolt holes 52a, 52a are formed in the intermediate bracket 9, and long elongated bolt insertion holes 91a, 91a are formed in two locations on the bracket 52 in the outside air intake side air duct 5 in the horizontal direction. Also good.

  In the embodiment, the weld nuts 52b and 52b are used, but separate nuts may be used.

  Further, in the embodiment, the bolt insertion holes 91a, 91a are formed in a long hole shape, but the longitudinal width of the air cleaner 1 in the bolt insertion hole only needs to be wider than the diameters of the shaft portions 93a, 93a of the 93, 93. .

  Further, as a modification of the second embodiment, the bolt insertion holes 91a and 91a may be formed in a square shape.

It is a whole side view which shows the attachment structure of the air cleaner duct of Example 1. FIG. It is an expanded longitudinal cross-sectional view in the AA line of FIG. It is an enlarged view which shows an intermediate | middle bracket. It is an enlarged view which shows the intermediate bracket of the attachment structure of the air cleaner duct of Example 2.

Explanation of symbols

1 Air cleaner 1a Discharge port 1b Air intake port 11 Mounting bracket 12 Bolt / nut 2 Frame (vehicle body)
21 Frame fixing bracket 22 Bolt / nut 23 Frame fixing bracket 3 Plate-shaped vibration absorbing rubber 4 Engine side air duct 5 Outside air intake side air duct 51 Bracket 52 Bracket 52a Bolt hole 52b Weld nut 6 Annular vibration absorbing rubber 61 Bolt / Nut 7 Annular Vibration absorption rubber 71 Bolt / Nut 8 Cabin (car body)
81 Cabin fixing bracket (Body side bracket)
9 Middle bracket (Body side bracket)
91 Horizontal portion 91a Long hole-shaped bolt insertion hole 91b Positioning engagement portion 91c Guide convex portion 92 Vertical portion 93 Bolt 93a Shaft portion

Claims (6)

The air cleaner is attached to the vehicle body via a soft mount, and the middle part of the air duct connected to the air cleaner inlet side is attached and fixed to the vehicle body with one bolt and nut, and the tip of the air duct The side is fastened and fixed to the vehicle body with bolts and nuts via the air duct side bracket and the vehicle body side bracket, and the other end is fastened and fixed to the air duct side brackets with bolts and nuts at two locations separated in the longitudinal direction of the air duct. An air cleaner duct mounting structure configured as follows:
A bolt hole is formed in one of the bracket on the vehicle body side and the bracket on the air duct side, and a bolt insertion hole in which the longitudinal width of the air cleaner is wider than the diameter of the shaft portion of the bolt on the other bracket. Formed,
The air is characterized in that a positioning engagement portion for engaging the shaft portion of the bolt is formed by lifting the front end side of the air duct upward at a substantially central portion in the longitudinal direction of the air cleaner in the bolt insertion hole. Cleaner duct mounting structure.   The air cleaner duct mounting structure according to claim 1, wherein the bolt insertion hole is formed in a vehicle body side bracket.   The air cleaner duct mounting structure according to claim 1, wherein the vehicle body bracket includes an intermediate bracket and a cabin fixing bracket.   The guide convex part which protrudes toward the engaging part for positioning is formed in the part facing the engaging part for positioning in the bolt insertion hole. Mounting structure of the air cleaner duct described in 1.   The air cleaner duct mounting structure according to any one of claims 1 to 4, wherein the intermediate bracket and the vehicle body side bracket are fastened and fixed by bolts and nuts via a soft mount. How to install the air cleaner duct. The air cleaner is attached to the vehicle body via a soft mount, and the middle part of the air duct connected to the air cleaner inlet side is attached and fixed to the vehicle body with one bolt and nut, and the tip of the air duct The side is fastened and fixed to the vehicle body with bolts and nuts via the air duct side bracket and the vehicle body side bracket, and the other end is fastened and fixed to the air duct side brackets with bolts and nuts at two locations separated in the longitudinal direction of the air duct. A bolt hole is formed at two locations on either the vehicle body side bracket or the air duct side bracket, while the longitudinal width of the air cleaner is on the other bracket. A bolt insertion hole wider than the diameter of
In the bolt insertion hole, a positioning engagement portion that engages the shaft portion of the bolt is formed by lifting the tip end side of the air duct upward at a substantially central portion in the longitudinal direction of the air cleaner,
The bolt shaft is engaged with the positioning engaging portion by utilizing the action of lifting the tip end side of the air duct upward with the dead weight of the air cleaner as a center around the fastening fixing portion of the air duct with respect to the vehicle body. An air cleaner duct mounting method characterized by the above.

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