JPH0526363Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a cylindrical engine mount.

PRIOR ART A main body including an elastic body integrally fixed between an outer cylinder member and an inner cylinder member provided inside the outer cylinder member, and a fixing part integrally provided on the outer circumferential surface of the outer cylinder member. It is provided in the parts located on both sides in the width direction of the transverse engine arranged along the width direction of the vehicle, and is integrally fixed to the engine and one of the vehicle body by bolts at the fixing part, and the engine and By attaching the outer cylindrical member to the support brackets on the inner cylindrical member in a state where the outer cylindrical member is sandwiched between a pair of support brackets protruding from the other side of the vehicle body with a predetermined distance in the longitudinal direction of the vehicle. A cylindrical engine mount is known that elastically supports an engine while having both end surfaces of its outer cylindrical member in contact with the inner surface of a support bracket.

Problems to be solved by this invention By the way, in the above-mentioned transversely mounted engine, the torque of the crankshaft is turned on and off when the vehicle starts suddenly or when the wheels move away from the road surface on a bumpy road. As a result, the engine is made to swing relatively largely in the longitudinal direction of the vehicle.
The side end surface of the outer cylinder member of the cylindrical engine mount and the inner surface of the support bracket may abut each other. In such a case, there is a risk that a relatively large load will be applied to the bolt, which may impair the durability of the bolt or cause loosening of the bolt. In this case, if the fixed part is integrally fixed to the outer circumferential surface of the outer cylinder member by welding, a relatively large load is applied to the welded part near the bolt, and the There was a risk that the durability of the welded part would be impaired.

Means for Solving the Problems The present invention has been made against the background of the above circumstances, and its purpose is to prevent the fixed portion from colliding with the outer cylinder member and the support bracket. An object of the present invention is to provide a cylindrical engine mount that can reduce the load applied to bolts for fixing to either the engine or the vehicle body. In order to achieve this object, the present invention provides a cylindrical engine mount as described above, in which a portion of the space between both end surfaces of the outer cylindrical member and the inner surface of the support bracket, which is close to the bolt, is It is characterized by being narrower than the part.

Operation and Effects of the Invention By doing this, in the space between both end surfaces of the outer cylinder member and the inner surface of the support bracket, the portion near the bolt for fixing the fixing portion to one of the engine and the vehicle body is removed from the other. , so that when the engine is rocked relatively largely in the front-rear direction of the vehicle, both end surfaces of the outer cylinder member and the inner surface of the support bracket abut each other at a portion close to the bolt. As a result, the load applied to the bolt can be suitably reduced, the durability of the bolt can be further improved, and loosening of the bolt can be effectively prevented. Furthermore, when the fixing part is integrally fixed to the outer circumferential surface of the outer cylinder member by welding, in addition to obtaining the above effects, the durability of the welded part adjacent to the bolt can be further improved. It can be improved.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

In FIG. 3, a dashed line indicates a transverse engine 10 installed in a front-wheel drive vehicle, etc. and a transaxle 1 integrally provided with the engine 10.
2, in which the left-right direction corresponds to the width direction of the vehicle. Cylindrical engine mounts 14 and 16 to which the present invention is applied are provided at portions of the engine 10 and transaxle 12 located on both sides of the vehicle in the width direction of the vehicle. Although not shown, predetermined cylindrical engine mounts are also provided at portions located on both sides in the longitudinal direction (both sides in the direction perpendicular to the plane of the paper in FIG. 3), and these cylindrical engine mounts allow the engine 10 to be and the transaxle 12 is the vehicle body 17
is elastically supported.

As shown in FIGS. 1 and 2, the cylindrical engine mounts (hereinafter simply referred to as engine mounts) 14 and 16 include a first outer cylinder member 18 having a cylindrical shape, and a first outer cylinder member 18 that has a cylindrical shape. A second outer cylindrical member 20 is integrally fitted into the inner peripheral surface of the first outer cylindrical member 18 by press fitting without protruding from both end surfaces.
, an inner cylindrical member 22 having a relatively small diameter that is inserted through the first outer cylindrical member 18 and the second outer cylindrical member 20, and the inner circumferential surface of the second outer cylindrical member 20 and the inner cylindrical member. An elastic body 24 made of, for example, rubber is integrally fixed between the outer peripheral surface of the plate 22 and plate-shaped parts 26 and 28 that are perpendicular to each other to form an L-shape. A bolt 30 is integrally provided to protrude toward the side opposite to the plate-shaped part 28 side, and
For example, arc welding is performed between the end surfaces of the first outer cylindrical member 18 and the outer peripheral surface of the first outer cylindrical member 18 in a direction parallel to the axis of the first outer cylindrical member 18. As a result, they each have a bracket 32 fixed to the outer peripheral surface of the first outer cylindrical member 18, and are constructed in the same way. In FIGS. 1 and 2, 33 and 35 are weld beads. In this embodiment, the first outer cylinder member 18
and the second outer cylinder member 20 constitute an outer cylinder member. A third
As shown in the figure, mounting portions 34 and 36 are each provided integrally, and as shown in FIG.
The engine mounts 14 and 16 are fixed to the engine 10 and the transaxle 12 at the bracket 32 by tightening the nut 38 on the front end side of the bolt. In this embodiment, the bracket 32 corresponds to the fixing part. On the other hand, a pair of plate-shaped support brackets 40 and 42 are integrally provided at positions corresponding to the mounting portions 34 and 36 of the vehicle body 17 and are spaced apart from each other by a predetermined distance in the longitudinal direction of the vehicle and are parallel to each other. With the first outer cylindrical member 18 sandwiched between the support brackets 40 and 42 with a predetermined distance, the bolt 44 holds the support bracket 40, the inner cylindrical member 22, and the support bracket 42, respectively. By inserting the engine mounts 14 and 16 and tightening the nuts 46, the engine mounts 14 and 16 are fixed to the vehicle body 17 at the inner cylinder member 22, respectively. Thereby, the engine 10 and transaxle 12 are elastically supported by the vehicle body 17 via the engine mounts 14 and 16. Note that disk-shaped rubber plates 48 and 48 are inserted between the support brackets 40 and 42 and the first outer cylinder member 18, respectively, and both end surfaces of the outer cylinder member 18 are connected to the rubber plates 48 and 48. By being abutted against the inner surfaces of the support brackets 40 and 42 through the rubber plates, deformation of the elastic body 24 in a direction parallel to the axial direction of the first outer cylinder member 18 beyond a certain limit is prevented. 48, 48, the collision shock of the first outer cylinder member 18 and the support brackets 40, 42 is alleviated, and the collision noise thereof is suppressed.

Here, in this embodiment, the first outer cylinder member 1
Both side end surfaces of 8 are welded parts by weld beads 35 between the first outer cylindrical member 18 and the plate-like part 26 and the bolts 3
0, that is, as it goes downward in FIGS. 1 and 2, they are inclined in directions that are spaced apart from each other.
The distance between the inner surfaces of the bolts 42 is narrowed as the welded portion of the weld bead 35 approaches the bolt 30. For this reason, for example, when the vehicle starts suddenly or when the wheels touch and leave the road surface on a bumpy road, the torque of the crankshaft (not shown) of the engine 10 is turned on and off, and the engine 10 is turned on and off. When the first outer cylindrical member 18 is swung relatively largely in the front-rear direction, the end surfaces of the first outer cylindrical member 18 are in substantially point contact with the support bracket 4 at the welded portion by the weld bead 35 and at a portion near the bolt 30.
It will come into contact with the inner surface of 0.42. As a result, since the distance between the outer cylinder member and the pair of support brackets is approximately constant, when the engine is shaken greatly, the welded portions corresponding to the weld beads 35 on both side end surfaces of the outer cylinder member and The first outer cylinder member 18 and the support brackets 40, 42 are abutted against the inner surface of the support bracket not only at a portion close to the bolt corresponding to the bolt 30 but also at a welded portion and a portion far from the bolt. Weld bead 35 due to collision with
The loads applied to the welded portion by the bolt 30, the bolt 30, and the welded bead 33 are suitably reduced. As a result, the durability of the welded portions of the engine mounts 14, 16 formed by the weld beads 33, 35 and the bolts 30 are further improved, and the tightening of the engine mounts 14, 16 to the engine 10 by the bolts 30 is prevented from loosening. This will be effectively prevented.

In the embodiment described above, both end surfaces of the outer cylinder member 18 are inclined in a direction in which the closer they are to the welded part by the weld bead 35 and the bolt 30, the more they are separated from each other. For example, Figures 4 and 5
As shown in the figure, support brackets are provided at portions in the circumferential direction of both end surfaces of the outer cylindrical member 18 and which can come into contact with the portions of the support brackets 40 and 42 located on the side of the welded portion formed by the weld bead 35. 40,
Arc-shaped protrusions 5 protruding toward 42.
0 and 50, or as shown in FIG. 6, the support brackets 40 and 42 may be inclined in the direction in which they approach each other as they get closer to the welded part by the weld bead 35. As shown in FIG. 7, support brackets 40, 42
Protrusions 52, 52, which respectively protrude toward the outer cylinder member 18, are formed by drawing or the like on a portion located on the side of the welded part by the weld bead 35 and which can come into contact with both end surfaces of the outer cylinder member 18. The protrusions 52, 52 may be formed integrally or
Alternatively, a metal plate or the like may be fixed. In these cases as well, it is possible to make the part of the space between the outer cylinder member 18 and the support brackets 40, 42 near the welded part by the weld bead 35, and hence the part near the bolt 30 narrower than the other parts. Therefore, the same effect as the above embodiment can be obtained.

Furthermore, in the embodiment described above, both end surfaces of the first outer cylinder member 18 are configured to abut against the inner surfaces of the support brackets 40, 42, but both end surfaces of the first outer cylinder member 18, 20 are It can also be configured to abut against the inner surfaces of the support brackets 40, 42.

Further, in the above embodiment, the outer cylinder member is composed of two members, the first outer cylinder member 18 and the second outer cylinder member 20, but it is also possible to configure it with a single outer cylinder member. .

Further, in the embodiment, the support bracket 40,
42 is provided so as to sandwich a part of the both end surfaces of the first outer cylindrical member 18 in the circumferential direction with a predetermined distance between them. They may be provided in a state where they are sandwiched with a predetermined distance between them.

Further, in the above embodiment, fillet welding is performed by arc welding along the direction parallel to the axis of the first outer cylinder member 18, but this is not necessarily necessary, and for example, depending on the shape of the bracket, may be fillet welded along the outer circumferential direction of the first outer cylindrical member 18, or the bracket may be welded to the outer cylindrical member by a welding method other than arc welding.

Further, in the above embodiment, the fixing part is constituted by the L-shaped bracket 32, but it may be a U-shaped bracket or an arcuate inner circumferential surface having the same radius of curvature as the outer circumferential surface of the first outer cylinder member 18. It may be a C-shaped bracket with a It may be integrally molded.

Furthermore, in the above embodiment, the cylindrical engine mount is fixed to the engine by bolts at the fixed part of the outer cylinder member, and is attached to the support bracket of the vehicle body at the inner cylinder member. Even in the case where the fixing portion of the outer cylinder member is fixed to the vehicle body with bolts and the inner cylinder member is attached to the support bracket of the engine, the same effects as in the above-described embodiments can be obtained.

In addition, various changes may be made to the present invention without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a view of the cylindrical engine mount in the direction of arrow A in FIG. 2. FIG. 2 is an enlarged view of the main part of FIG. 3, with a part cut away. Third
The figure is a front view showing a transverse engine supported on a vehicle body by the cylindrical engine mount of the present invention. FIG. 4 is a diagram showing another example of the present invention,
2 is a diagram corresponding to FIG. 1. FIG. 5 is a diagram showing the main part of the view in the direction of arrow B in FIG. 4, with a part removed. 6 and 7 are diagrams showing still other examples of the present invention, and correspond to FIG. 1, respectively. DESCRIPTION OF SYMBOLS 10... Engine, 14, 16... Cylindrical engine mount, 17... Vehicle body, 18... First outer cylinder member, 20... Second outer cylinder member, 22... Inner cylinder member,
24...Elastic body, 30...Bolt, 32...Bracket, 40, 42...Support bracket.

Claims (1)

[Claims for Utility Model Registration] A main body in which an elastic body is integrally fixed between an outer cylindrical member and an inner cylindrical member provided inside the outer cylindrical member; The fixing part is provided at a portion located on both sides in the width direction of a transverse engine disposed along the width direction of the vehicle, and is integrally attached to one of the engine and the vehicle body by a bolt at the fixing part. In the inner cylinder member, the outer cylinder member is sandwiched between a pair of support brackets that are fixed to the engine and protrude from the other side of the vehicle body, with a predetermined distance in the longitudinal direction of the vehicle. A cylindrical engine mount that elastically supports the engine by being attached to the support bracket, and in which both side end surfaces of the outer cylinder member can come into contact with the inner surface of the support bracket, wherein both side end surfaces of the outer cylinder member and A cylindrical engine mount characterized in that a portion of the space between the inner surfaces of the support bracket near the bolt is narrower than other portions.