JPH0124339Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a fan shroud installed to improve the efficiency of a cooling fan of an automobile engine.

The smaller the gap between the outer periphery of the cooling fan and the inner periphery of the fan shroud, the more effective it is.If the cooling fan and fan shroud are mounted on the engine body side and supported under the same vibration system, they can be separated into separate vibration systems. The gap can be made extremely small compared to the case where it is supported as a single piece.

Conventionally, the fan shroud has a bracket 2 on the engine body 1 side, as shown in FIGS. 1 to 3.
2, 2 are fixedly installed, and the branch parts 4, 4, 4 of the fan shroud 3 are attached to the brackets 2, 2, 2 with the spacer tube 5, the rubber mount 6, the mounting bolt 7, the metal annular end plate 8, and the nut 9. Attached via.

Moreover, in this case, the spacer cylinder 5 is tightly fitted onto the mounting bolt 7 inserted into the through hole 10 of the bracket 2, and the inner circumferential edge surface 11 of the outer metal ring plate 11 of the rubber mount 6 is tightly fitted.
A is brought into close contact with the outer periphery of the spacing cylinder 5, and a relatively large gap A is formed between the inner periphery hook portion 12a of the inner metal ring plate 12 and the circumferential surface of the mounting hole 4a of the support piece 4 of the fan shroud 3, The metal annular end plate 8 is brought into contact with the outer metal annular plate 11 and tightened with a nut 9, and the cooling fan 13 is tightened using the gap A as an adjustment allowance.
and the center of fan shield 3 were aligned and assembled.

With such conventional mounting means, if the rubber part of the rubber mount 6 becomes sagging and deforms,
Branch portion 4 of fan shroud 3 and inner metal ring plate 1
2, the frictional force at the engaging surface portion B decreases, and the mounting position of the branch part 4 shifts due to the vertical vibration of the vehicle, etc., and the center of the fan shroud 3 becomes closer to the center of the cooling fan 13. This causes the fan shroud 3 to interfere with the cooling fan 13.

In view of the above-mentioned circumstances, the present invention is designed to prevent the center of the fan shroud from shifting from the center of the cooling fan even when the rubber part of the rubber mount loses its elasticity and is permanently deformed due to the so-called sagging phenomenon. It is a mounting device that prevents interference between forming a required circumferential gap around the mounting bolt inserted through the through hole of the bracket, loosely fitting the spacing tube, and tightly fitting the inner circumferential edge surface of the outer metal ring plate of the rubber mount to the spacing tube; This is a fan shroud mounting device in which a metal annular end plate is brought into contact with the end face of the spacing cylinder, fitted onto the mounting bolt, and tightened with a nut.

Next, an embodiment of the present invention will be described with reference to FIG. The mounting bolt 7 is inserted into the through hole 10 of the bracket 2 fixedly installed on the side of the engine body 1, and the spacer cylinder 5, which can freely form a required circumferential gap, is loosely fitted around the mounting bolt 7. Branch part 4
The inner metal ring plate 12 is tightly fitted into the mounting hole 4a, and the rubber mount 6 is tightly fitted into the spacer cylinder 5 by engaging with the inner peripheral hook portion 12a.

That is, the inner circumferential edge surface 11a of the outer metal ring plate 11 of the rubber mount 6 is brought into close contact with the circumferential surface of the spacer tube 5.

Next, a metal annular end plate 8 is brought into contact with the end surface 5a of the spacer cylinder 5, and the mounting bolt 7 is fitted into the end plate 8.
Adjust the tightening of the nut 9 to align the center of the fan shroud 3 with the center of the cooling fan 13.

During such work, the circumferential gap C between the mounting bolt 7 and the spacing tube 5 provides sufficient adjustment allowance.

After the set position of the fan shroud 3 is determined, the nut 9 is tightened to join the end surface 8a of the metal annular end plate 8 to the end surface 5a of the spacing tube 5.

Since the device of the present invention is constructed as described above, after the fan shroud 3 is assembled in the correct setting position, even if the rubber portion of the rubber mount 6 becomes sagging, the end face 5a of the spacer tube 5 and the metal annular end plate The outer metal ring plates 11, 11 whose inner circumferential edge surfaces 11a are tightly fitted to the spacer tubes 5 are used to prevent displacement of the spacer tubes 5 due to the frictional force generated by strong bonding with the end surfaces 8a of the outer metal ring plates 11, 11.
and inner circumferential hook portion 1 of inner metal ring plates 12, 12
2a is tightly fitted into the attachment hole 4a of the branch part 4, so that the branch part 4 will not be displaced.

The present invention uses the circumferential gap between the mounting bolt and the spacing tube as an adjustment allowance, and also strongly connects the end face of the spacing tube and the end face of the metal annular end plate to prevent displacement of the fan shroud branch. This has the advantage that the fan shroud does not interfere with the cooling fan even due to engine vibration or the like.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the mounting position of the fan shroud, Fig. 2 is an explanatory diagram showing the relative position of the fan shroud and the cooling fan, Fig. 3 is a cross-sectional view of essential parts of a mounting device using conventional means for the fan shroud, and Fig. 4 1 is a sectional view of a main part of a fan shroud mounting device according to the present invention. 1...Engine body, 2...Bracket, 3...
...Fan shield loud, 4...branch part, 5...spacing tube, 5a...end face, 6...rubber mount, 7...
Mounting bolt, 8...Metal annular end plate, 8a...End face, 9...Nut, 10...Through hole, 11...Outer metal ring plate, 11a...Inner peripheral edge surface, 12...Inner metal ring plate , 12a... Inner circumferential hook portion, 13... Cooling fan.

Claims (1)

[Scope of utility model registration request] Closely fit the inner circumferential hook of the inner metal ring plate of the rubber mount into the mounting hole penetrated through the fan shroud's branch, and then tighten it around the mounting bolt inserted through the through hole of the bracket fixed to the engine side. forming a circumferential gap and loosely fitting the spacing cylinder, tightly fitting the inner circumferential edge surface of the outer metal ring plate of the rubber mount to the spacing cylinder, and abutting a metal annular end plate on the end face of the spacing cylinder; A fan shroud mounting device that is fitted onto the mounting bolt and tightened with a nut.