JP3516729B2 - Engine mount bracket - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine mount bracket for supporting a vehicle engine.

[0002]

2. Description of the Related Art A conventional engine mount bracket will be described below.

As shown in FIGS. 8 and 9, an engine 1 of a vehicle has an engine portion 2 supported by a front member (not shown) via an engine mount bracket 3 and an insulator 4, and the transmission portion thereof. 5
Are supported by the rear member 7 via the insulator 6 and the like.

As a conventional engine mount bracket 3, a molded product p formed by press molding a sheet metal as shown in FIG.
However, in order to reduce the weight of the engine mount bracket 3 and increase the rigidity, an aluminum die-cast product a as shown in FIG. 9 has become the mainstream.

[0005]

However, in the case of the above-mentioned conventional aluminum die-cast product a, it is necessary to provide a draft angle in order to remove it from the mold. Therefore, the mount bracket mounting seat surface b is tilted. There is a problem in that the seat b is required to be cut and the processing cost is high, and the cast molded product has poor extensibility and is weak in impact force, and the damage mode is a crack mode, which is not preferable. There was a problem.

The present invention solves the above problems.
It is an object of the invention to provide an engine mount bracket that has good stretchability, is strong against impact force, is easy to mold, and is inexpensive.

[0007]

In order to achieve this object, an engine mount bracket of the present invention comprises a mount bracket main body made of an aluminum extruded material, an engine mounting portion and an insulator mounting portion, and both of these mounting portions are supported and opposed to each other. The supporting portion is integrally formed, and a bent portion is formed at a side edge of the supporting portion to form a predetermined mounting angle between the engine mounting portion and the insulator mounting portion.

Preferably, the bent portions of the supporting portion are joined to each other.

More preferably, a vibration damping member is provided between the bent portions of the support portion.

[0010]

With this structure, the mount bracket body is made of aluminum extruded material, so it has good extensibility and is strong against impact force, and there is no draft, so there is no need for cutting.
Since the mounting angle between the engine mounting portion and the insulator mounting portion can be formed only by forming the bent portion on the side edge of the supporting portion, the molding is easy and the cost is low.

Also, the rigidity of the mount bracket main body is increased by joining the bent portions of the support portion to each other.

Further, by providing the vibration damping member between the bent portions of the supporting portion, the vibration of the mount bracket body is damped to prevent the generation of noise.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the engine mount bracket 10 includes a mount bracket body 11. The mount bracket body 11 is formed by cutting aluminum extruded material to a predetermined size, and has an engine mounting portion 12 having an engine mounting surface 12a and an insulator mounting portion 1 having an insulator mounting surface 13a.
And 3, are constituted by integrally with the support portion 14, 15 facing supporting these two mounting sites 12a, 13a.

A predetermined mounting angle α is provided between the engine mounting portion 12 and the insulator mounting portion 13, and the side edges of the supporting portions 14 and 15 connecting these mounting portions 12 and 13 are cut off. The bent portions 16 and 17 are formed by being bent in a letter shape.
The back surfaces of 17 are pressed together to form mating portions 18, 19.

The engine mounting portion 12 is provided with an engine mounting hole 12b, and the insulator mounting portion 13 is provided with an insulator mounting hole 13b.

Next, a method of molding the engine mount bracket will be described.

The material of the mount bracket body 11 is an aluminum extruded material A having a hollow trapezoidal cross section. First, this aluminum extruded material A is cut into a predetermined width. At this time, the lower surface of the trapezoid is the engine mounting portion 12, the upper surface is the insulator mounting portion 13, and the front and back surfaces are the supporting portions 14 and 15, respectively (FIG. 3).

Next, the side edges of the supporting portions 14 and 15 within the range shown by the chain line in FIG. 3 are pressed in the directions of the arrows to form the bent portions 16 and 17. In this process, the supporting part 1
As the side edges of 4 and 15 are bent, the insulator mounting portion 13 is inclined with respect to the engine mounting portion 12. Further, the bent portions 16 and 17 are bent and crushed by press molding, and the back surfaces of the bent portions 16 and 17 are pressed against each other to form the joined portions 18 and 19. At this time, the engine mounting portion 12 and the insulator mounting portion 13 are formed at a predetermined angle α (FIG. 4).

The mating portions 18 and 19 on the back surface which are crimped
May be joined to each other by welding, rivets, bolts, caulking or the like in order to increase the rigidity of the mount bracket body 11.

Then, the deformed portion 1 of the supporting portions 14 and 15
Modification presses such as 4b and 15b and engine mounting parts 12
By trimming the outer shape of the deformed portion 12c of the engine and the like, the accuracy of the shape and the dimension is obtained.
2b, an insulator mounting hole 13b is formed in the insulator mounting portion 13 (FIG. 5).

The engine mount bracket 10 manufactured as described above is light because it is an extruded aluminum material having good extensibility, and moreover, the damage mode is not a crack but a deformation mode, so it is sensed before the deformation becomes fatal. To be done.

Further, since it is an extruded material and there is no draft on the bolt seat surface, it is inexpensive because it does not require cutting, and because it has good elongation, it is possible to press punch bolt holes and the like, and this is also an inexpensive product. Further, the press molding enables molding of a shape that cannot be molded by casting, resulting in a high degree of freedom in shape.

FIGS. 6 and 7 show the fitting portion 1 of the bent portions 16 and 17 with respect to the mount bracket body 11 described above.
8 and 19 show another embodiment in which the following is added by utilizing Nos. 8 and 19.

In FIG. 6, a damping member such as an anti-vibration rubber 20 is sandwiched between the mating portions 18 and 19 on both sides and fixed by rivets or the like, and the relative movement of both sides due to vibration is damped by the friction of the damping member. The mating part 1 on both sides
By inserting the anti-vibration rubber 20 between 8 and 19, the resonance of the mount bracket 10 can be attenuated and the noise transmitted from the engine to the living room can be reduced.

In FIG. 7, the dynamic damper 21, which is a damping member, is sandwiched between the mating portions 18 and 19 on both sides and is mounted with bolts, nuts, etc., and the resonance point of the dynamic damper 21 is aligned with the resonance point of the mount bracket 10 to mount the mount bracket. It attenuates 10 resonances. By arranging the dynamic damper 21 in the mating portions 18 and 19 on both sides where the rigidity is concentrated in this manner, the dynamic damper effect is efficiently produced and the mount bracket 10 is provided.
The resonance of can be damped.

The above embodiment is based on the mounting bracket 10.
Bending portions 16 and 17 of the supporting portions 14 and 15 are bent inward so that the back surfaces of the supporting portions 14 and 15 are pressed against each other.
Although it has been described that the support portions 14 and 1 are formed,
Bending the measuring edges of 5 to the bending portions 16,
The same effect can be obtained by forming 17 outside the support portions 14 and 15 and forming a predetermined attachment angle between the engine attachment portion 12 and the insulator attachment portion 13.

[0028]

As described above, according to the present invention, the mount bracket main body is integrally configured with the engine mounting portion and the insulator mounting portion made of the extruded aluminum material, and the supporting portion supporting both of these mounting portions and facing each other. Form a bent part on the side edge of the part to form a predetermined mounting angle between the engine mounting part and the insulator mounting part, have good extensibility and strength against impact force, and there is no draft, so cutting without the need, since only by forming a bent portion on the side edge of the support part can you form the mounting angle of the engine mounting portion and the insulator mounting portion, the molding is easy and the cost to obtain a low engine mount bracket You can

Further, the rigidity of the engine mount bracket can be increased by joining the bent portions of the support portion to each other.

Further, by providing the vibration damping member between the bent portions of the support portion, the vibration of the engine mount bracket can be damped and the generation of noise can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of an engine mount bracket according to an embodiment of the present invention.

FIG. 2 (a) is a front view of the engine mount bracket. (B) It is a side view of the engine mount bracket.

FIG. 3 is an explanatory view of a forming process in a material stage of the engine mount bracket.

FIG. 4 (a) is a front view for explaining a molding process in the pressing step. (B) It is a side view for explaining the forming process in the pressing stage.

FIG. 5 is a top view for explaining a molding process at the trim and piercing stages.

FIG. 6 is a cross-sectional view of an engine mount bracket to which a vibration-proof rubber according to another embodiment of the present invention is attached.

FIG. 7 is a sectional view of an engine mount bracket to which a dynamic damper according to another embodiment of the present invention is attached.

FIG. 8 is an exploded perspective view of an engine mounting including a conventional iron plate engine mount bracket.

FIG. 9 is an exploded perspective view of an engine mounting including a conventional aluminum die-cast engine mount bracket.

[Explanation of symbols]

10 Engine mount bracket 11 Mount bracket body 12 Engine mounting site 13 Insulator mounting area 14 Support site 15 Support site 16 Bent section 17 Bent section A Aluminum extruded material

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 5-177293 (JP, A) JP 5-180256 (JP, A) JP 2-182587 (JP, A) JP 48- 104048 (JP, A) Actual development 61-148934 (JP, U) Actual development Flat 2-41745 (JP, U) Actual development 56-116222 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60K 5/12 F02B 77/00 F16M 7/00 F16M 5/00

Claims (3)

(57) [Claims] 1. A mount bracket main body is made up of an engine mounting portion and an insulator mounting portion made of an extruded aluminum material, and a supporting portion supporting both of these mounting portions and facing each other.
An engine mount bracket, wherein the engine mount bracket comprises a body , and a bent portion is formed at a side edge of the support portion to form a predetermined mounting angle between the engine mounting portion and the insulator mounting portion. 2. The engine mount bracket according to claim 1, wherein the bent portions of the support portion are joined to each other. 3. The engine mount bracket according to claim 1, wherein a vibration damping member is provided between the bent portions of the support portion.