JP2008309183A - Engine mount structure and engine mount method - Google Patents

Abstract

An engine mount insulator capable of securely fixing an engine is provided.
An engine mount insulator includes an engine mount stabilizer provided on the engine side, a body side metal fitting provided on the body side, and an engine provided between the engine mount stabilizer and the body side metal fitting. The mount insulator 90 includes a fixing bolt 50 and an engagement member 60 that can be engaged with the body side metal fitting 20 and the engine mount stabilizer 40 to compress the engine mount insulator 90.
[Selection] Figure 1

Description

  The present invention relates to an engine mount structure and an engine mount method using the same, and more particularly to an engine mount structure using an elastic member.

Conventionally, engine mounts are disclosed in, for example, Japanese Utility Model Laid-Open No. 5-41925 (Patent Document 1), Japanese Utility Model Laid-Open No. 53-138003 (Patent Document 2) and Japanese Patent Laid-Open No. 8-14328 (Patent Document 3). Yes.
Japanese Utility Model Publication No. 5-41925 Japanese Utility Model Publication No. 53-138003 JP-A-8-14328

  Conventionally, the engine mount has a problem that the mount 1 varies depending on the dimensional accuracy of the mount receiving surface and the mounting operation method.

  Therefore, the present invention has been made to solve the above-described problems, and provides an engine mount structure capable of stable mounting and an engine mount method using the same.

  An engine mount structure according to the present invention includes a first member provided on the engine side, a second member provided on the body side, an elastic member interposed between the first member and the second member, and a first member And a compression member that engages with the second member and can compress the elastic member.

  In the engine mount structure configured as described above, since the elastic member can be mounted in a state compressed by the compression member, the elastic member can be prevented from being misaligned before and after mounting. As a result, the engine can be accurately mounted on the body.

  Preferably, the end of the first member extends so as to approach the second member, the end of the second member extends so as to approach the first member, and between the first member end and the second member end. At least one is provided with a buffer member that prevents direct contact between the ends of the first and second members.

  An engine mounting method according to the present invention uses the above-described engine mount structure, compresses an elastic member with a compression member before mounting the engine on the body, and mounts the engine on the body with the elastic member compressed. Separating the compression member from the first and second members after engine mounting and releasing the compression member.

  In such an engine mounting method, since the elastic member is already compressed in the process of mounting the engine, the elastic member is not greatly compressed even when an engine load is applied to the elastic member. Therefore, the displacement of the elastic member at the time of mounting can be minimized, and stable mounting is possible.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is a sectional view of an engine mount structure for connecting an engine and a body according to an embodiment of the present invention. Referring to FIG. 1, an engine mount structure 1 is a member that is interposed between an engine-side bracket 80 and a body-side attachment surface 10 and attaches the engine to the body. The engine mount structure 1 includes a body-side metal member 20, an engine mount insulator 90, a plate member 100, an engine mount stabilizer 40, and an engagement member 60 in order from the body side. An engagement member 60 is engaged with the body side metal fitting 20, the engine mount insulator 90, the plate member 100, and the engine mount stabilizer 40, and a fixing bolt 50 is fitted to one of the engagement members 60, and a nut is fitted to the other. 70 is fitted. The fixing bolt 50 is in contact with the body side metal fitting 20 and presses the body side metal fitting 20 so as to approach the engine mount insulator 90. The nut 70 is in contact with the engine side bracket 80 and functions to press the engine side bracket 80 against the engine mount insulator side. The end of the body side metal fitting 20 is curved in the direction (axial direction) in which the engaging member 60 extends, and the end 21 is provided with a rubber 30 as a stopper. An end 41 of the engine mount stabilizer 40 faces the rubber 30.

  FIG. 2 is a bottom view seen from the direction indicated by arrow II in FIG. 1 and includes the body-side metal fitting before being attached to the body. Referring to FIG. 2, holes 22 and 23 for attachment to the body are provided in the body side metal fitting 20 on the bottom surface. In other words, a bolt that penetrates the body side metal fitting 20 is guided to the holes 22 and 23, and the bolt is screwed into the body so that the body side metal fitting 20 is attached to the body.

  The body side metal fitting 20 extends on the opposite side to the direction connecting the two holes 22 and 23, and the rubber 30 is attached to the extended end. An engine mount stabilizer 40 is attached to the outer peripheral side of the rubber 30.

  FIG. 3 is a cross-sectional view of the engaging member and the bolt, and shows a state where the bolt is detached from the engaging member. Referring to FIG. 3, fixing bolt 50 has a shaft portion 52 and a male screw 51. The engaging member 60 has a shaft portion 63 and a female screw 61. The engine mount insulator 90 can be pressed by the male screw 51 and the female screw 61 being screwed together.

  FIG. 4 is a cross-sectional view of an engine mount structure according to a comparative example, showing a gap between the engine mount insulator and rubber. In the engine mount structure according to the comparative example, an engaging portion that penetrates the engine mount insulator 90 is not provided. For this reason, the engine mount insulator 90 cannot be compressed.

  An engine mounting method in the engine mount structure configured as described above will be described. First, the engagement member 60, the nut 70, the engine mount stabilizer 40, the plate-like member 100, the engine mount insulator 90, the body side metal fitting 20 and the fixing bolt 50 are attached to the engine side bracket 80. At this time, the engine mount insulator 90 is compressed using the fixing bolt 50 and the engaging member 60 by engaging the front end of the fixing bolt 50 with the engaging member 60.

  The body side metal fitting 20 is brought into contact with the mounting surface 10 in a state where the engine mount insulator 90 is compressed. In this state, bolts are inserted into the holes 22 and 23 shown in FIG. 2, and the body side metal fitting 20 is attached to the attachment surface 10.

  After the mounting, the fixing bolt 50 is disconnected from the engaging member 60 to release the compression of the engine mount insulator 90.

  That is, the engine mount insulator 90 is fixed to the vehicle mounted state by the fixing bolt 50 before being mounted on the vehicle. After mounting the engine on the vehicle, the fixing bolt 50 is removed.

  By adopting this configuration, the engine mount insulator 90 is mounted on the vehicle with the fixing bolt 50 in the vehicle mounted state stopper gap (gap with the engine mount stabilizer 40), so that the stopper gap as designed is obtained.

  The variation in the stopper gap due to the size system of the mounting surface 10 as the engine mount receiving surface and the assembling method is eliminated, and the occurrence of sound and vibration caused by the stopper when starting, stopping, or starting the vehicle can be suppressed.

  An engine mount stabilizer 40 as a first member provided on the engine side; a body side metal fitting 20 provided on the body side; an engine mount insulator 90 interposed between the engine mount stabilizer 40 and the body side metal fitting 20; An engagement member 60 and a fixing bolt 50 that can be engaged with the engine mount stabilizer 40 and the body metal fitting 20 to compress the engine mount insulator 90 are provided.

  The end 41 of the engine mount stabilizer 40 extends so as to approach the body side metal fitting 20. The end 21 of the body side metal fitting 20 extends in a direction approaching the engine mount stabilizer 40. The end portion 21 of the body-side metal fitting 20 is provided with a rubber 30 as a buffer member that prevents direct contact with the engine mount stabilizer 40. The rubber 30 may be attached to the end 41 of the engine mount stabilizer 40.

  The engine mounting method according to the present invention includes a step of compressing the engine mount insulator 90 with the engaging member 60 and the fixing bolt 50 before mounting the engine on the body, and the engine body with the engine mount insulator 90 compressed. And a step of releasing the compression of the engine mount insulator 90 by releasing the fixing of the fixing bolt 50 that compresses the engine mount insulator 90 after the mounting.

  In the past, the engine's shared load was applied to the rubber, and the rubber was deformed to determine the stopper gap. The stopper gap varies depending on the variation in dimensions of the mounting surface 10 on the body side and the assembling method.

  In contrast, in the present invention, the engine mount insulator 90 is fixed in a state where it is mounted on a vehicle, that is, the engine mount insulator 90 is compressed. After that, mount the engine on the body and remove the fixing. By adopting the mounting structure described above, it is possible to eliminate the variation in assembly of the stopper gaps and prevent the hitting of the stopper.

  Various shapes such as an in-line shape, a V shape, a W shape, and a horizontally opposed shape can be adopted as the shape of the engine. Furthermore, the engine may be provided at any of the front part of the body, the center of the body, and the rear part of the body. Further, the engine mounting structure may be either a vertical placement in which the crankshaft is parallel to the traveling direction of the vehicle, or a horizontal placement in which the crankshaft is orthogonal to the traveling direction of the vehicle.

  Further, in this embodiment, the engine mount structure of the engine mounted on the vehicle has been described. However, the present invention may be applied to a structure other than the vehicle, for example, an engine mount structure installed on the ground.

  Furthermore, the engine may be either a diesel engine or a gasoline engine, and is not limited to a reciprocating engine, and the present invention can be applied to a rotary engine mounting structure.

  Further, in the embodiment of the present invention, the structure in which the engaging member 60 is arranged so as to form an acute angle with the vertical direction is shown. However, the engine is placed on the body by arranging the engaging member 60 vertically or horizontally. It may be mounted.

  The engine mount insulator 90 may be made of a material having a damping effect that prevents engine vibration from being transmitted to the body. For example, the engine mount insulator 90 can be made of any one of rubber, plastic, and spring, or a combination thereof.

  This embodiment employs a structure in which other engine mounts other than those shown in the figure are present and the engine load is transmitted to each mount. The load transmitted from the engine to the body includes not only the load in the vertical direction due to the mass of the engine but also the load in the rotation direction due to rotation of the crankshaft. In order to receive these loads, the engaging member 60 is provided at an acute angle with respect to the vertical method.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is sectional drawing of the engine mount structure for connecting an engine and a body according to embodiment of this invention. It is the bottom view seen from the direction shown by the arrow II in FIG. 1, Comprising: It is a figure containing the body side metal fitting before attaching to a body. FIG. 3 is a cross-sectional view of the engaging member and the bolt, and shows a state where the bolt is detached from the engaging member. FIG. 4 is a cross-sectional view of an engine mount structure according to a comparative example, showing a gap between the engine mount insulator and rubber.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Engine mount structure, 20 Body side metal fittings, 21,41 End part, 22,23 hole, 30 Rubber, 40 Engine mount stabilizer, 50 Fixing bolt, 52 Shaft part, 60 Engagement member, 70 Nut, 80 Engine side bracket, 90 Engine mount insulator, 100 Plate member.

Claims (3)

A first member provided on the engine side;
A second member provided on the body side;
An elastic member interposed between the first member and the second member;
An engine mount structure comprising: a compression member that engages with the first member and the second member to compress the elastic member. The end of the first member extends in a direction approaching the second member,
The second member end extends so as to approach the first member end, and at least one of the end of the first member and the end of the second member has an end of the first and second members. The engine mount structure according to claim 1, wherein a buffer member that prevents direct contact is provided. An engine mounting method using the engine mount structure according to claim 1, wherein the elastic member is compressed with a compression member before the engine is mounted on the body;
Mounting the engine on the body with an engine mount structure interposed between the engine and the body in a state where the elastic member is compressed;
And a step of releasing the compression by separating the compression member from the first and second members after mounting the engine.

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