JP2000203290A - Mount bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dimensional precision from being degraded by welding strain even if a reinforcing member is welded to a side plate. SOLUTION: This mount bracket, mounting a power unit or the like on a vehicle body side, includes a pair of side plates 12a, 12b clamping a buffering member mounted on either side of the power unit or the like and the vehicle body side, a substrate 11 which has a plurality of mounting holes 13, 14 and connects the base end parts 12aa, 12bc of the respective side plates 12a, 12b, wherein one side plate 12b includes a folded part 18 folded into two stages in the horizontal direction and formed into a single cross-section shape in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for mounting a vehicle engine and a transmission on a frame.

[0002]

2. Description of the Related Art Conventionally, an automobile engine and a transmission are integrated when they are assembled to a frame, and are called a power plant and are attached to the frame via a mount bracket and an insulator. . Specifically, for example, an insulator is attached to a subframe that is attached to a frame of a vehicle body, and mount brackets that hold the insulator are fixed to, for example, three places of a power plant,
The power plant is mounted on the subframe by connecting the mount bracket to the insulator.

A mount bracket for mounting such a power plant is disclosed, for example, in Japanese Utility Model Application Laid-Open No. 58-803.
As disclosed in Japanese Patent Application Laid-Open No. 11-111, there is known a mounting flange surface and ribs for reinforcing the side surface provided on a side surface extending substantially at a right angle from the mounting flange surface. Usually, such a mount bracket is made of a sheet metal having a thickness of about 3 mm, and has a configuration in which a triangular rib is fixed to a mounting flange and a side plate by welding. Since the insulator is sandwiched by a shaft perpendicular to the side plate, a large force is applied to the side plate, so that the insulator is attached to secure the rigidity of the side plate.

[0004]

However, when the ribs are welded as described above, the rigidity of the side plates is ensured, but distortion occurs due to the welding, which causes a problem that the dimensional accuracy between the side plates is difficult to obtain. There was something. In addition, a welding process is required, and the material is increased by the amount of ribs, so that the manufacturing cost is increased.

[0005] In addition to the reinforcement of the side plate, when the substrate is mounted in three mounting holes, the mounting hole which receives the largest load may be reinforced. That is,
If a large load is applied to the mounting hole when the power plant is mounted, the load may deform the vicinity of the mounting bolt seat surface, that is, the vicinity of the mounting hole. For this reason, the mounting rigidity of the mount bracket is reduced, and NV noise such as gear noise is reduced.
(Noise vibration) Performance may be reduced. Therefore,
For such mounting holes, a patch (plate) has been welded for reinforcement to improve the mounting rigidity.

However, in the case of welding a patch in this way, the position of the through hole of the mounting bolt provided in the patch must exactly match the position of the mounting hole.
It was difficult to increase productivity. In addition, the material required for the patch, the welding work thereof, and the weight of the mount bracket are increased, and the manufacturing cost is increased.

An object of the present invention is to solve such a problem.

[0008]

In order to achieve the above object, the present invention takes the following measures. That is, the mount bracket according to the present invention has a bent portion in which one of the side plates sandwiching the cushioning member is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction. The side plate is reinforced.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present application is directed to a mount bracket for mounting a power unit or the like to a vehicle body, wherein a pair of cushions for holding a cushioning member mounted to one of the power unit and the vehicle body. Side plate,
A base plate having a plurality of mounting holes and connecting the base end of each side plate, and one side plate is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction. A mounting bracket having a bent portion.

According to such a configuration, one of the side plates has a bent portion having a single cross-sectional shape in the vertical direction, so that the rigidity of the one side plate is increased. Therefore, it is not necessary to separately weld a reinforcing member to this side plate. Therefore, it is possible to reduce the number of parts and to shorten the time of the welding process, thereby reducing the manufacturing cost. Further, since the number of welded portions is reduced, distortion due to welding can be reduced, dimensional accuracy can be improved, and productivity can be improved.

According to a second aspect of the present invention, there is provided a mount bracket for mounting a power unit or the like on a vehicle body, comprising a pair of side plates for holding a cushioning member mounted on one of the power unit and the vehicle body. A base plate having a mounting hole for connecting a base end portion of each side plate, and one side plate is formed substantially integrally with the base plate by being bent substantially perpendicularly to the base plate. A mount bracket characterized by forming a corner bead swelling toward the mounting hole side over the one side plate and the substrate in the region between and near the mounting hole provided near the base end of the one side plate. It is.

According to this configuration, since the corner bead is provided near the mounting hole, the surface rigidity around the mounting hole can be increased. Therefore, there is no need to weld a reinforcing member to this mounting hole,
It is possible to reduce the number of parts and to shorten the time of the welding process, thereby reducing the manufacturing cost. Further, since the number of welded portions is reduced, distortion due to welding can be reduced, dimensional accuracy can be improved, and productivity can be improved. In addition, since the corner bead is formed over the substrate and the side plate, it is possible to prevent the corner bead from falling down.

In such a configuration, the other side plate is
If it is made to have a bent portion that is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction, the rigidity of the other side plate can be increased, so further welding The process can be shortened.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. The mount bracket 1 shown in FIG. 1 is fixed to a power plant, which is a power unit in which an engine and a transmission are integrated, with mounting bolts. The mount bracket 1 is mounted on a main frame of a vehicle body (not shown) via an insulator, for example, as shown in FIG. 2, and is an engine mounting insulator (hereinafter, referred to as a cushioning member) mounted on a subframe 2 for mounting a power plant. (Referred to as an insulator) 3.

The sub-frame 2 welds the bent upper member and lower member at their edges,
It is formed in a tube shape so that a hollow portion exists inside. On the upper surface of the sub-frame 2, for example, at three locations, insulators 3 are respectively fixed by bolts 4. The insulator 3 includes a cylindrical outer cylinder 31, a buffer material 32 made of an elastic material such as rubber, which is mounted in the outer cylinder 31, and an inner cylinder 33 enclosed by the buffer 32. For such an insulator 3, the mounting bracket 1 is attached to a side plate 12 a, which will be described later, by a mounting bolt penetrating the inner cylinder 33.
12b is tightened and connected to the insulator 3.

The mount bracket 1 includes a substrate 11 fixed to a power plant by bolts, a first side plate 12a extending from one side edge of the substrate 11 and bent at substantially a right angle to be integrally formed, 11 and a second side plate 12b fixed by welding. The substrate 11 has a substantially rectangular shape in a plan view, and has mounting holes 13 at front and rear corners on the side of the second side plate 12b.
A third mounting hole 14 is provided near the base end 12aa on the back side of 2a. Each of the side plates 12a and 12b has a substantially triangular shape in a side view, and the apex portion is formed in an arc shape along the through hole 15 through which the mounting bolt passes.

Since the first side plate 12a is formed by bending a portion protruding from the substrate 11, the edge of the substrate 11 and the base end 12aa of the first side plate 12a are integrated. . A corner bead 17 is provided in an integral part of the substrate 11 and the first side plate 12a, that is, in the vicinity of the third mounting hole 14 of the bent portion 16. The corner bead 17 is formed so as to bulge inside the mount bracket 1 by deforming the bent portion 16 by pressing the bent portion 16 obliquely upward from the outside. That is, the corner bead 17 has an upper portion reaching the base end portion 12aa of the first side plate 12a and a lower portion reaching the vicinity of the third mounting hole 14 of the substrate 11, and It protrudes so as to connect the first side plate 12a to the first side plate 12a.

On the other hand, the second side plate 12b has a bent portion 18 which is bent in two steps in the lateral direction. That is, the second side plate 12b, behind its front edge 12ba, first bends outward, that is, in a direction away from the first side plate 12a to form a first bent portion 18a, and then the inner side. That is, the second bent portion 18b is formed by continuously bending in the direction approaching the first side plate 12a. The bent portion 18 is formed on the upper edge 12b of the second side plate 12b.
Since it is formed similarly in the vertical direction from b to the base end portion 12bc, the cross-sectional shape in the horizontal direction is unitary. Therefore, the second side plate 12b has a portion in front of the bent portion 18 substantially parallel to the first side plate 12a, and a gap between the first bent portion 18a and the second bent portion 18b is the second side plate 12b. 1 and projects outward in a plane with respect to the first side plate, and then the second bent portion 1
The rear portion is inclined and extends rearward from 8b.

The rear portion of the second side plate 12b is bent so as to be integrated with the back plate 19 having a low height.
The back plate 19 extends from the second side plate 12b as described above, reaches the rear end of the base end 12aa of the first side plate 12a, and is connected to the first side plate 12a by welding A. Similarly, the second side plate 12b is connected to the base end 1 at the front end thereof.
2bc outer surface and the proximal end 12 of the second bent portion 18b
bc is welded to the substrate 11 on the outer surface and the substrate 1
1 is welded. Also, the through hole 1 of the second side plate 12b
The nut 5 for screwing the mounting bolt is provided on the outer surface of the nut 5.
Is welded.

With such a configuration, the first side plate 12
Since the corner bead 17 is provided near the third mounting hole 14 in the bent portion 16 between the a and the substrate 11, the reinforcing member is welded to the third mounting hole 14, 3
The surface rigidity around the mounting hole 14 can be secured. In addition, the corner bead 17 is formed between the substrate 11 and the first side plate 1.
2a, the first side plate 12a
Acts as a reinforcement element against the outward displacement of the first side plate 12a, and prevents the first side plate 12a from falling outward. As described above, since the third mounting hole 14 is not reinforced by welding another member, the welding process can be shortened, the number of parts can be reduced, and the manufacturing cost can be reduced. . In addition, the first side plate 1
Since there is no welding A near the base end 12aa of 2a,
It is possible to increase the inner precision between the side plates 12a and 12b.

Further, since the second side plate 12b has the bent portion 18, even when the insulator 3 is sandwiched between the side plates 12a and 12b, the reinforcing member is not welded to the outer surface thereof. It will exhibit sufficient rigidity. Moreover,
Since the bent portion 18 has a single cross-sectional shape from its upper end to its lower end, it is possible to obtain the same rigidity between the mounting position of the insulator 3 and the base end portion 12bc which is a portion fixed to the substrate 11. As a result, the second side plate 12b is not deformed when it is combined with the insulator 3.

Thus, with respect to the second side plate 12b,
Since no reinforcing member is required, the number of components can be reduced, and the step of welding such a member is eliminated, so that the number of welding steps (welding length) can be reduced. Therefore, the manufacturing cost can be reduced. In addition, since the number of welding steps is reduced, distortion due to welding A is reduced, and dimensional accuracy between the side plates 12a and 12b can be increased. In addition, the bent portion 18 of the second side plate 12b is composed of a first bent portion 18a bent outward and a second bent portion 18b bent inside, so that the second side plate 12b is bent. Since the welded portions 12b are separated from each other (offset), sufficient welding strength can be secured.

The present invention is not limited to the embodiment described above. In the above embodiment, the insulator as the cushioning member is fixed to the sub-frame 2 constituting the frame. However, this insulator is attached to the power plant and the sub-frame 2
To which the mount bracket 1 is fixed.

The power plant may be directly mounted on a frame such as a side member or a cross member of the vehicle body, or the power plant may be directly mounted on the vehicle body. Further, in the above-described embodiment, the power plant is attached.
The present invention may be applied to a rear differential transfer or the like.

In addition, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0026]

As described above, according to the first aspect of the present invention, since one of the side plates has a bent portion having a single cross-sectional shape in the vertical direction, the one side plate has a bent portion. The rigidity is increased, and it is not necessary to separately weld a reinforcing member to this side plate. Therefore, the number of parts can be reduced, and the time of the welding process can be reduced, and the manufacturing cost can be reduced. Further, since the number of welded portions is reduced, distortion due to welding can be reduced, and as a result, dimensional accuracy can be improved, and productivity can be improved.

According to the second aspect of the present invention, since the corner bead is provided near the mounting hole,
The surface rigidity around the mounting hole can be increased. For this reason, it is not necessary to weld a reinforcing member to this mounting hole, so that the number of parts can be reduced, the time of the welding process can be shortened, and the manufacturing cost can be reduced. Moreover, since the number of welded portions is reduced, distortion due to welding can be reduced, dimensional accuracy can be improved, and productivity can be improved. further,
Since the corner bead is formed over the substrate and the side plate, it is possible to prevent the corner bead from falling down.

Further, according to the third aspect of the present invention, the other side plate has a bent portion which is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction. Therefore, the rigidity of the other side plate can be increased, and the welding process can be shortened, so that the same effect as each of the above-described inventions can be expected.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a sub-chassis connected to the embodiment.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a left side view of the embodiment.

FIG. 5 is a right side view of the embodiment.

FIG. 6 is a rear view of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Sub-frame 3 ... Insulator 11 ... Substrate 12a ... 1st side plate 12aa ... Base end 12b ... 2nd side plate 12bc ... Base end 13 ... Mounting hole 14 ... 3rd mounting hole 17 ... Corner bead 18 ... Folding Curved part

Claims (3)

[Claims] 1. A mounting bracket for mounting a power unit or the like on a vehicle body side, comprising a pair of side plates for holding a buffer member mounted on one of the power unit and the vehicle body side, and a plurality of mounting holes. A base plate for connecting the base ends of the side plates, and one side plate has a bent portion which is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction. A mounting bracket, characterized in that: 2. A mounting bracket for mounting a power unit or the like on a vehicle body, comprising a pair of side plates for holding a buffer member mounted on one of the power unit and the vehicle body, and a plurality of mounting holes. A substrate connecting the base end of the side plate, and one side plate is formed by being bent substantially perpendicularly to the substrate and integrally formed, and in a region between the substrate and the side plate, and A mount bracket characterized by forming a corner bead bulging to the side of the mounting hole over one side plate and the substrate in the vicinity of the mounting hole provided near the base end of the side plate. 3. The side plate according to claim 2, wherein the other side plate has a bent portion which is bent in two steps in the horizontal direction and has a single cross-sectional shape in the vertical direction. Engine mount bracket.