JP2008240625A - Engine cover mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine cover mounting structure capable of realizing excellent mountability, while maintaining the prevention of a looseness sound by a mounting variation and the shock absorbing effect by displacement to a load from above. <P>SOLUTION: This engine cover mounting structure has a fitting structure of detachably fitting a fitting mount member composed of an elastic body and a fitting projection body in the vehicle longitudinal direction. Rotational operation with a fitting part as a fulcrum is freed by connecting a second mount member mounting hole separate in the vehicle upward direction via a connecting opening part to a mount member mounting hole of a mounting leg part for engaging the fitting mount member, and mounting work of this side mounting part in an engine room is facilitated. When a load is applied from above an engine cover, the engine cover itself approaches an engine member by moving in the vehicle downward direction, and a hood cover can be sufficiently deformed thereby. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an engine cover that is attached so as to cover an upper surface of an engine mounted on a vehicle, and relates to an improvement of an attachment structure for attaching the engine cover to the vehicle.

  2. Description of the Related Art Conventionally, in an engine mounted on a vehicle, an engine cover is often attached to cover an ignition coil and an injector attached to the cylinder head cover to enhance a soundproof effect and a design effect. In order to securely attach the engine cover to the engine, four corners of the engine cover are usually fastened to the engine head cover or the like by four bolts.

  As shown in FIG. 4, the engine cover is fixed to the engine by positioning the engine cover 330 with respect to the engine 320, and then screwing a bolt 342 with a wrench 340 to fix the engine cover 330. The corners are fastened and fixed. In this mounting structure, when one end of the engine cover 330 is fixed to the end of the engine 320 on the back side (the back side when facing the engine room 350), the operator's hand reaches the fixing portion. There is a problem that it is difficult. This problem is particularly noticeable in relatively large vehicles that perform off-road traveling because the vehicle height tends to increase and the vehicle width increases. For this reason, even if the worker works from the front side of the vehicle 300 or works from the side of the vehicle 300, the worker extends his hand to the end on the far side of the engine 320 in a bent posture. Have to do. As a result, the physical burden on the worker is naturally increased, and a reduction in work efficiency is unavoidable.

As a technique for solving such a problem, a support mechanism that is provided on the inner side of the engine room and is detachably engaged with one end of the engine cover, and enables a rotation operation with the engaging portion as a fulcrum. An engine cover mounting structure that is provided on the front side in the engine room and has a fastening mechanism for fastening the other end of the engine cover to the engine and that can reduce the mounting work on the back side of the engine room has been proposed. (See Patent Document 1).
JP 2004-132219 A

  However, in the case of this structure, as shown in FIG. 5, the rear side engaging portion 331 of the engine cover is engaged with the support mechanism 310 on the inner side of the engine room, and the vehicle longitudinal direction position is determined. However, since it is engaged in the vehicle front-rear direction on the back side in the engine room, it was not possible to obtain a buffering effect by displacing the load from above. It is an object of the present invention to provide an engine cover mounting structure capable of realizing a buffering effect by displacement with respect to a load from above while preventing such rattling noise due to mounting variations and maintaining good mounting properties. It is.

  In order to solve the above-mentioned problems, an engine cover mounting structure according to the present invention is an engine cover that is mounted so as to cover an upper surface of an engine member mounted on a vehicle. The mounting portion on the back side in the room includes a fitting mount member made of an elastic body engaged with a mounting leg portion extending downward from the rear side surface of the engine cover, and a fixing bracket extending from the engine member. The fitting structure is configured to be fitted to the fitting mount member formed at the tip of the fitting, and the fitting mount member and the fitting protrusion are detachably fitted in the vehicle front-rear direction. A mounting member mounting hole of the mounting leg for engaging the fitting mounting member, and a second mounting member spaced upward in the vehicle With holes is the gist that has a mounting structure of the engine cover, characterized in that coupling through the coupling opening. By adopting such a configuration, even when the fitting mount member is fitted to the fitting protrusion on the back side in the engine room, the fitting mount member has elasticity so that the fitting portion can be turned as a fulcrum. Operation becomes free, and attachment work on the front side in the engine room becomes easy. Further, even if variations occur in the fixing bracket, the mounting leg, etc., the variation can be allowed by the elasticity of the fitting member for fitting.

  In addition, when a load is applied from above the engine cover by forming the mounting member mounting hole and the second mounting member mounting hole of the mounting leg through the connection opening and making the mounting mount member movable. The engine cover itself moves downward in the vehicle and approaches the engine member, so that the bonnet cover can be sufficiently deformed and the impact at the time of collision can be sufficiently absorbed.

  Preferably, it is preferable that all of the engine cover and the attachment portion of the engine member have a fitting structure in which the fitting mount member and the fitting protrusion are detachably fitted in the vehicle front-rear direction. By adopting such a configuration, the fitting mount member can be moved in all the mounting portions of the engine cover, the entire engine cover can be moved downward in the vehicle, and the bonnet cover can be sufficiently deformed. The impact of time can be fully absorbed.

  According to the present invention, it is possible to realize good wearability even when the vehicle height is high and the vehicle width is wide like a relatively large vehicle that performs off-road traveling, and the physical characteristics of the operator can be realized. Assembly work that can reduce the burden is possible. Moreover, the generation of rattling noise can be prevented by a flexible configuration capable of absorbing the assembling variation, and a buffering effect due to displacement with respect to the load from above can be obtained. In this way, it is possible to solve the problem of rattling noise due to assembly variation, and to realize good wearability while maintaining the pedestrian protection performance due to the buffer effect by displacement.

  In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 schematically shows an example of a top view of an engine cover 1 in an automobile engine structured according to the present invention. As shown in FIG. 2, the upper part of the engine is configured to include a throttle body (not shown), an engine member 20, and the like. Fixing brackets 30 and 31 are fixed at positions corresponding to the four corners of the upper part of the engine. Specifically, bolt holes are formed at positions corresponding to the four corners of the engine member 20, and the fixing bracket mounting bolts 21 inserted through the through holes formed in the fixing brackets 30 and 31 are screwed into the bolt holes. Then, it is fixed by fastening.

  Further, the fixing bracket 30 on the back side of the engine room is formed with a fitting projection 32 for attaching the engine cover 1. The fitting protrusion 32 is attached to a fitting hole 41 of a fitting member 40 made of a rubber-like elastic body engaged with a mounting leg 11 formed integrally with the engine cover body 10.

  The engine cover 1 is formed of a heat-resistant nylon resin reinforced with glass fiber or the like, and is formed in a rectangular shape substantially corresponding to the shape of the upper part of the engine. Here, the fixing bracket 30 is attached to the rear of the engine as viewed from the front of the vehicle. In the present embodiment, the fixing bracket 30 and the fitting protrusion 32 are provided on the back side in the engine room (the back side when facing the engine room), and the engine cover 1 is mounted on the back side in the engine room. An attachment mechanism that allows the engine cover 1 to rotate and slide at the fitting portion while being detachably fitted to the leg portion 11 is configured.

  A fitting mount member 40 is attached to the upper portion of the fixing bracket 31 provided on the front side in the engine room so as to be in the fitting direction in the vertical direction. An engine cover side fitting projection 12 is integrally formed at a position facing the fixing bracket 31 toward the vehicle lower side. The engine cover side fitting projection 12 is fitted into the fitting hole 41 of the fitting mount member 40, and the tip end step portion 120 of the engine cover side fitting projection 12 is hooked to prevent it from coming off, and the taper opening of the fitting mount member The surface 42 is configured to receive the tapered contact surface 121 of the engine cover side fitting projection 12.

  Next, with reference to FIG. 2 and FIG. 3, the mounting structure on the back side of the engine room will be described in detail. As shown in FIG. 2, a fitting protrusion 32 is formed on the upper end portion of the fixing bracket 30 fixed to the upper portion of the engine member 20 so as to protrude forward of the vehicle. Also, a mounting member mounting hole 110 is formed at the vehicle lower end portion of the mounting leg portion 11 that protrudes from the lower surface of the engine cover body 10 in the vehicle downward direction, and the fitting mount member 40 passes the tapered opening surface 42 through the vehicle. It is mounted facing backwards. The fitting protrusion 32 is inserted into the fitting hole 41 positioned in front of the tapered opening surface 42, and the fitting mount member 40 is prevented from coming off by the annular convex portion 33 at the tip. In this state, the engine cover main body 10, the fitting mount member 40, and the fixing bracket 30 are attached without rattling, and even when vibration is applied, these parts do not rattle and generate abnormal noise.

  Further, as described above, the mounting member mounting hole 110 is formed at the vehicle lower end portion of the mounting leg portion 11, and the second mounting member mounting portion is mounted on the vehicle upper base side of the mounting leg portion 11 as shown in FIG. A hole 111 is formed, and the mount opening 112 connects the mount member mounting hole 110 and the second mount member mounting hole 111. The mount member mounting hole 110 and the second mount member mounting hole 111 have the same diameter, and the width of the connecting opening 112 connecting the two holes is narrower than the diameter of the mount member mounting hole 110. Further, the mounting leg portion 11 is reinforced by the reinforcing rib 13 formed at the base portion and is not easily damaged. The fitting mount member 40 is attached to the mount member attaching hole 110, the fitting protrusion 32 is inserted into the fitting hole 41 of the fitting mount member 40, and the engine cover 1 is attached. With this configuration, when the engine cover 1 is loaded from above and exceeds a predetermined load, the fitting mount member 40 is elastically deformed by the fitting groove 43 and passes through the connection opening 112 to form the second mount. By moving to the member mounting hole 111 and approaching the engine member 20, a large deformation of the engine hood can be allowed. The load at which the fitting mount member 40 starts moving can be controlled by the relationship between the width of the connection opening 112 and the fitting member 40 and the fitting protrusion 32.

  Next, the operation when the engine cover 1 is attached to the engine member 20 will be described with reference to FIG. First, the operator performs an approximate alignment of the engine cover 1 with respect to the engine member 20 while lifting the front side of the engine cover 1 and looking at the back side thereof. That is, the fitting protrusion 32 formed on the upper end of the fixing bracket 30 on the back side in the engine room shown in FIG. 2 is attached to the attachment leg 11 extending from the back surface of the engine cover 1. The tapered opening surface 42 of the fitting member 40 that has been fitted is brought into contact. At this time, the tapered opening surface 42 of the fitting mount member 40 functions as a guide for guiding the engine cover 1 to an accurate mounting position. Further, since the tapered opening surface 42 of the fitting mount member 40 is sufficiently larger than the tip diameter of the fitting protrusion 32 of the fixing bracket 30, the operator can perform this operation relatively easily.

  In this way, after the tapered opening surface 42 of the fitting mount member 40 is aligned with the fitting protrusion 32 of the fixing bracket 30, the engine cover 1 is rotated by using the mating portion as a fulcrum. By making the engine cover 1 horizontal and sliding the engine cover 1 toward the rear side of the engine room, the annular protrusion 33 of the fitting projection 32 penetrates the fitting hole 41 of the fitting mount member 40 so as to prevent the fitting. The fitting mount member 40 and the fitting protrusion 32 are fitted. In this fitting state, the engine cover 1 is allowed to move in the vehicle front-rear direction and turn in the vertical and horizontal directions with respect to the fixing bracket 30 by the elasticity of the fitting mount member 40.

  Thus, after fitting and attaching the back end of the engine cover 1, the front end of the engine cover 1 is attached. Specifically, after the engine cover side fitting protrusion 12 formed so as to protrude from the back surface of the engine cover 1 is aligned with the tapered opening surface 42 of the fitting mount member 40 of the fixing bracket 31 on the near side, the engine The engine cover side fitting protrusion 12 is inserted and fitted into the fitting hole 41 of the fitting mount member 40 by pushing this attachment portion from above the cover 1. At this time, the tapered opening surface 42 of the fitting mount member 40 functions as a guide for guiding the engine cover side fitting protrusion 12 to an accurate mounting position. Further, since the tapered opening surface 42 of the fitting mount member 40 is sufficiently larger than the tip diameter of the tip step portion 120 of the engine cover side fitting projection 12, the operator can perform this work relatively easily. . Further, due to the elasticity of the fitting mount member 40 engaged with the fitting protrusions 32 of the above-described fixing bracket 30 on the back side, variations between related parts can be allowed.

Note that the present invention is not limited to the specifications described in the present embodiment, and various modes are possible without departing from the gist of the present invention. For example, the fitting structure portion that is slidably engaged in the horizontal direction may be provided on both the back side and the near side of the engine room. Further, in the present embodiment, the mounting structure in which the engine room front side mounting portion is fitted and attached in the vertical direction using the mounting member for fitting has been described, but the front side mounting portion may be a fastening structure using bolts as in the prior art. .

It is a top view which shows the engine cover of the Example of this invention. It is II-II sectional drawing which shows the attachment structure of an Example. It is a perspective view which shows the mount member fitting hole of an Example. It is a perspective view which shows an example of the attachment operation | work of the engine cover to the conventional engine. It is a schematic diagram which shows an example which engages one end of the conventional engine cover with a support mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine cover 10 Engine cover main body 11 Attachment leg part 12 Engine cover side fitting protrusion 13 Reinforcement rib 20 Engine member 21 Fixing bracket attachment bolt 30 Fixing bracket 31 Fixing bracket 32 Engaging protrusion 33 Annular convex part 40 For fitting Mount 41 Fitting hole 42 Tapered opening surface 110 Mount member mounting hole 111 Second mount member mounting hole 112 Connecting opening 120 Front end stepped portion 121 Tapered contact surface 300 Vehicle 310 Support mechanism 320 Engine 330 Engine cover 331 Back side engaging portion 340 wrench 342 bolt 350 engine room

Claims (2)

In an engine cover mounting structure that is mounted so as to cover an upper surface of an engine member mounted on a vehicle,
At least the mounting portion on the inner side of the engine room has a fitting mount member made of an elastic body engaged with a mounting leg portion extending downward from the back side surface of the engine cover and a fixed portion extending from the engine member. A fitting projection formed on the front end of the bracket for fitting and fitted to the fitting mount, and the fitting mount and the fitting projection are detachably fitted in the vehicle front-rear direction. With a joint structure,
A mounting member mounting hole of the mounting leg that engages with the mounting member for fitting is connected to a second mounting member mounting hole spaced upward in the vehicle through a connection opening. Mounting structure. All of the mounting portions of the engine cover and the engine member have a fitting structure in which the fitting mount member and the fitting protrusion are detachably fitted in the vehicle front-rear direction. Item 1. The engine cover mounting structure according to Item 1.

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