JP4592013B2 - Structure to prevent peeling of adhesive sheet - Google Patents

Description

  The present invention relates to a peeling prevention structure for a heat insulating sheet or the like attached to a vehicle body side member such as a vehicle body cover.

It is well known that a heat insulating sheet made of aluminum or the like is attached to the muffler vicinity of the vehicle body cover to insulate the passenger side portion.
JP-A-60-52337

  By the way, when a high-pressure car wash is performed from the outside of the vehicle body with the heat insulating sheet attached, a high pressure water flow is jetted onto an end surface (referred to as a pressure receiving end surface) on the high pressure water flow side of the heat insulating sheet, thereby peeling off from the pressure receiving end surface portion with water pressure. Sometimes. In particular, it is desirable to consider such peeling when combining materials that have a relatively weak adhesive force, such as in bonding a resin and a metal. Further, in off-road motorcycles and buggy cars that run on wasteland, there are many opportunities for high-pressure car washing because the body is heavily soiled, so effective peeling prevention is also desired. The present invention aims to realize such a demand.

In order to solve the above-mentioned problems, the present invention relates to a structure for preventing peeling of an adhesive sheet according to the first aspect of the present invention. A muffler is disposed at a position, covers the upper part of the left and right rear wheels, and a pair of left and right rear fenders are provided so as to protrude to the left and right sides of the vehicle body. In a vehicle in which a muffler is disposed and a sheet-like member is attached to a portion of the rear fender facing the vehicle body,
Affixing the sheet-like member on the lower surface of the rear fender from above the muffler to the inside of the vehicle radial direction,
A rib-shaped water pressure reducing portion is provided on the rear fender along the end surface on the outer side of the vehicle body around the sheet-like member . The water pressure reducing portion is integrally formed on the lower surface of the rear fender so as to have a substantially sectional shape. substantially perpendicular inner rising wall of the sheet-shaped member side forms a chevron, have a tapered outer inclined walls, characterized in that let weakened pressure of high-pressure water according to the end surface by the water pressure reducer .

  A second aspect of the present invention according to the first aspect, wherein the end face is a pressure receiving end face on the high pressure water flow side, and an end face receiving pressure at the time of the high pressure car wash. It is characterized by.

A third aspect is characterized in that, in the first aspect, the sheet-like member is made of metal, and the rear fender is made of resin.

A fourth aspect of the present invention is the heat insulating sheet according to the third aspect, wherein the sheet-like member is affixed in the vicinity of a muffler, and the vehicle body side member is a resin rear fender.

According to claim 1, since the water pressure reducing portion that protrudes outwardly higher than the pasting surface is provided along the end surface of the sheet-like member, the high pressure water flow applied to the end surface is weakened by the water pressure reducing portion, In addition, it is prevented from being applied directly to the end face. For this reason, even if a high-pressure water flow is applied to the vehicle body, the sheet-like member is difficult to peel off from the end portion.
In addition, since the water pressure reducing portion is a rib-like portion formed integrally with the rear fender , the water pressure reducing portion can be easily formed.

  According to the second aspect, since the water pressure reducing portion is provided along the pressure receiving end surface that receives the water pressure of the high pressure water flow when the high pressure car wash is performed on the end surface of the sheet-like member along the water pressure reducing portion, the high pressure water flow during the high pressure car wash is The water pressure is reduced by the water pressure reducing part and applied to the pressure receiving end face. For this reason, even if it is a high-pressure car wash, a sheet-like member becomes difficult to peel from a pressure receiving end surface.

According to the third aspect, the metal sheet can be effectively prevented from being peeled off effectively even in the combination of the metal sheet-like member and the resin rear fender , which has a weak original adhesive force.

  According to claim 4, the metal sheet-like member is a heat insulating sheet provided in the vicinity of the muffler, and is attached to a resin-made rear fender that is relatively easily soiled. It is possible to prevent peeling of the heat insulating sheet in the high pressure car wash.

  Hereinafter, an embodiment will be described based on the drawings. FIG. 1 is a side view of a four-wheel buggy according to an embodiment. In this buggy vehicle, a pair of front wheels 1 and rear wheels 2 are provided on the front and rear of the vehicle body. An engine 3 is provided at the center of the vehicle body, and an exhaust pipe 4 extends rearward from the engine 3 and is connected to a muffler 5 disposed at a position overlapping the side of the rear wheel 2.

  The upper part of the rear wheel 2 which is the front wheel 1 is covered with a front wheel fender 6 and a rear wheel fender 7, respectively, the upper part of the engine 3 is covered with a tank cover 8, and a fuel tank (not visible in this figure) is inside. Has been placed. A seat 9 is disposed behind the fuel tank. Each body cover is appropriately molded from resin.

  FIG. 2 is a view showing the vehicle body from the rear. The rear wheel fenders 7 protrude from the left and right sides of the seat 9 to the left and right sides of the vehicle body, and cover the upper portions of the left and right rear wheels 2, respectively. A muffler 5 is disposed in a space below and near the rear wheel fender 7 on the left side of the vehicle body and inside the rear wheel 2 on the left side of the vehicle body. The muffler 5 becomes relatively hot due to exhaust gas during engine operation.

  3 is a cross-sectional view taken along line 3-3 in FIG. 1, and a heat insulating sheet 10 is adhered to the lower surface of the rear wheel fender 7 from the upper side to the inner side of the muffler 5 by adhesion. The portion to which the heat insulating sheet 10 is bonded is a portion facing the vehicle body outward of the rear wheel fender 7 which is a vehicle body side member. The heat insulating sheet 10 is suitably made of metal such as an aluminum sheet. The place where the heat insulating sheet 10 is affixed is also a portion to which a water flow is directly applied during high-pressure car washing. Further, the direct application of water flow means that the high-pressure water flow 12 injected from the high-pressure injection nozzle 11 at the time of high-pressure car washing reaches the injection target without the water pressure being reduced by an obstacle or the like on the way.

  A water pressure reducing unit 14 is provided in the vicinity of the pressure receiving end surface 13 that is the side facing the high-pressure water flow 12 and on the outer side of the vehicle body, among the end surfaces that form the periphery of the heat insulating sheet 10. The water pressure reducing portion 14 is a rib-like portion that is integrally formed to protrude from the lower surface of the rear wheel fender 7 so as to extend along the pressure receiving end surface 13 in a protruding line. The cross-sectional shape is substantially mountain-shaped, and has a substantially vertical inner standing wall 15 on the heat insulating sheet 10 side and a tapered outer inclined wall 16 as shown in the enlarged portion in the figure.

  The water pressure reduction unit 14 protrudes at a height of H from the general surface 7b spreading outward from the heat insulating sheet 10 at the same height as the affixing surface 7a of the heat insulating sheet 10 on the lower surface of the rear wheel fender. The protruding height H is preferably about the same as or larger than the wall thickness t of the heat insulating sheet 10. In this embodiment, the water pressure reduction unit 14 is slightly higher (H> t).

  The water pressure reducing unit 14 is for reducing the water pressure on the pressure receiving end surface 13 so that the high pressure water flow 12 does not directly reach the pressure receiving end surface 13. Therefore, the pressure-receiving end face 13 may be brought into close contact with the inner standing wall 15 so that no water pressure is applied, but a slight gap may be provided so that the high-pressure water flow 15 is not directly applied (shown state). When it is in close contact, it also serves as positioning when pasting, and when it is separated, it makes the pasting work more efficient.

  Next, the operation of this embodiment will be described. When a large amount of dirt 17 such as mud adheres to the lower surface of the rear wheel fender 7 as shown in FIG. 3 due to running on a wasteland, high-pressure washing is performed using the high-pressure injection nozzle 11 from the outside of the vehicle body in order to remove the dirt 17.

  By this high-pressure car wash, the high-pressure water flow 12 is jetted from the outside of the vehicle body toward the lower surface of the rear wheel fender 7, and the dirt 17 is caused to flow by the high-pressure water flow. At this time, the high-pressure water flow 12 is also applied to the heat insulating sheet 10, but as shown in the enlarged portion, the high-pressure water flow 12 toward the pressure receiving end surface 13 is an obstacle by the water pressure reduction unit 14, and the high-pressure water flow 12 that hits the water pressure Decreases and flows along the outer inclined wall 16 to bypass the pressure receiving end face 13.

  For this reason, the water pressure of the high-pressure water flow 12 is weakened against the pressure receiving end face 13, and the water pressure is not directly applied. Therefore, although the pressure receiving end face 13 is originally a part that is most easily peeled off by water pressure during high-pressure car washing, such peeling is unlikely to occur.

  In particular, when a metal heat insulating sheet 10 such as an aluminum sheet is affixed to the resin rear wheel fender 7, it can withstand the water pressure of a high pressure car wash despite being a combination of materials with relatively weak adhesive strength. Can be prevented. In addition, the heat insulating sheet 10 is provided in a portion that is most easily soiled by running on a rough ground, and can maintain strong adhesion over a long period of time despite being frequently subjected to high-pressure car washing. Moreover, since the water pressure reducing portion 14 is a rib-like portion formed integrally with the rear wheel fender 7, it can be easily formed and can be freely formed without impairing the appearance.

In addition, this invention is not limited to the said Example, A various deformation | transformation and application are possible.
For example, the water pressure reducing portion 15 is not necessarily one that protrudes from the general surface 7b, but conversely, by providing a step portion for attaching the sheet by lowering the attaching surface 7a side from the general surface 7b, The relatively high general surface 7b itself may be used.

  Various sheet-like members can be used in place of the heat insulating sheet 10. As long as this sheet-like member is bonded in a flat plate shape, the use, shape and material are not limited. That is, it may be used for displaying various information such as advertising stickers and coloring. Furthermore, it may be a film-like haze that is thinner than the range generally referred to as a sheet-like shape, or vice versa. The material can be either metal or resin.

  The vehicle body side members for which the water pressure reducing unit 15 is provided include not only the rear wheel fender 7 but also the front wheel fender 6, the tank cover 8, and other various uses and names of vehicle body covers. In addition to body covers, there are appearance members such as bib plates. That is, the vehicle body side member can be any vehicle body exterior member that is directly subjected to a high-pressure water flow when subjected to high-pressure washing. The target vehicle is not limited to a buggy vehicle, but is suitable for various uses such as an on-road or off-road motorcycle, and an off-road vehicle that is particularly susceptible to contamination is suitable.

  The position where the sheet-like member is pasted and the position where the water pressure reducing unit 15 is provided can be freely determined according to the target vehicle body side member. In addition, the water pressure reducing unit 15 may be provided integrally with the vehicle body side member or separately, and in the case of a separate body, the material can be freely different from the vehicle body side member.

Furthermore, the high-pressure water flow that causes peeling may not necessarily be the high-pressure water flow at the time of high-pressure car washing, but may be any pressure that produces a certain level of high pressure such as splash water. The end face of the sheet-like member in this case may be a portion that receives the water pressure of the high-pressure water flow.

Side view of the vehicle body according to the embodiment The figure which shows the above-mentioned body from back 3-3 enlarged sectional view of FIG.

Explanation of symbols

1: front wheel, 2: rear wheel, 3: engine, 5: muffler, 6: front wheel fender, 7: rear wheel fender, 10: heat insulating sheet, 12: high-pressure water flow, 13: pressure receiving end face, 14: water pressure reducing unit

Claims (4)

A pair of front and rear wheels are provided on the front and rear of the vehicle body, an engine is installed in the center of the vehicle, a muffler is placed at the position overlapping the side of the rear wheel, covers the upper part of the left and right rear wheels, A pair of left and right rear fenders are provided so as to project to the left, the muffler is disposed in a space below the left and right rear fenders and inside the rear wheels, and a sheet-like member is attached to the portion of the rear fender facing the vehicle body. In the vehicle
Affixing the sheet-like member on the lower surface of the rear fender from above the muffler to the inside in the vehicle width direction,
A rib-shaped water pressure reducing portion is provided on the rear fender along an end surface on the vehicle body outer side of the periphery of the sheet-like member , and the water pressure reducing portion is integrally formed on the lower surface of the rear fender so as to have a substantially mountain shape in cross section. substantially perpendicular inner rising wall of the sheet-shaped member side forms a, have a tapered outer inclined walls, characterized in that let weakened pressure of high-pressure water according to the end face by the pressure reducing unit affixed Sheet peeling prevention structure. The end face is a pressure-receiving end face on the high-pressure water flow side of a portion to which a high-pressure water flow is applied when performing high-pressure washing, and is an end face that receives pressure during the high-pressure washing. Structure to prevent peeling of adhesive sheets. The structure for preventing peeling of an adhesive sheet according to claim 1, wherein the sheet-like member is made of metal, and the rear fender is made of resin. Peeling prevention structure of the sticking sheet according to claim 3, wherein said sheet-like member is a heat insulating sheet that is adhered to the vicinity of the muffler.

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