JP2001180296A - Engine mounting bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture an engine mounting bracket at a low cost by improving the material yield of a main body member and reducing a pressing process, to enhance the strength of the main body member by removing a stopper inserting hole, to use a stopper in common regardless of difference in the plate thickness of the main body member, and to inexpensively structure the engine mounting bracket by thinning the thickness of the plate without impairing the stiffness of the stopper. SOLUTION: An auxiliary plate 20 integrally provided with a guide portion 28, a pinch pressing portion 26 and a stopper portion 30 is arranged so as to closely contact with an inner side surface of a pair of side wall parts 12, 14 in a main body member 18, and integrally fixed by fillet welding between the auxiliary plate 20 and each opening side end portion of the side wall parts 12, 14 at the outside of a bending portion 32 between the guide portion 28 and the pinch pressing portion 26.

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, and more particularly to an improvement in an engine mount bracket having a U-shape to which an engine mount is fixed.

[0002]

2. Description of the Related Art A pair of substantially parallel side walls and a back portion have a U-shape as a whole, and the back side is integrally fixed to one of an engine and a vehicle body. And a double-cylindrical engine mount in which an outer cylinder is fixed to the other side of the vehicle body, from the side of the U-shape opening between the pair of side walls in a posture substantially perpendicular to the side walls. The inner cylinder is integrally fixed to the side walls by the insertion member which is relatively inserted and the fastening member disposed through the insertion holes provided in the pair of side walls and the inner cylinder of the engine mount. Known engine mounting brackets are known. The engine mount is for elastically attaching the engine to the vehicle body, and an elastic member such as rubber is interposed between the outer cylinder and the inner cylinder.

FIGS. 3A and 3B are views showing an example of such a conventional engine mounting bracket, wherein FIG. 3A is a sectional view taken along line AA of FIG. 3B, and FIG. 3B is a left side view of FIG. The engine mounting bracket 110 (hereinafter, simply referred to as the bracket 110) has a pair of substantially parallel side walls 112, 114 and a back part 116 integrally formed with each other to form a U-shaped main body member 118 as a whole. And the side wall 1 of the main body member 118
The back part 116 of the main body member 118 is constituted by a pair of stoppers 120, 120 integrally fixed to the base members 12, 114, respectively, with the U-shaped opening side facing upward (also obliquely possible). Fixed to the engine. As the main body member 118, a metal plate having a plate thickness of, for example, about 4 to 5 mm is used, and as the stopper 120, a metal plate having a plate thickness of, for example, about 2 mm is used.

[0004] At the open side ends of the pair of side walls 112 and 114, guides 122 and 124 extending obliquely outwardly in a U-shape are provided integrally and continuously, respectively.
By being lifted up integrally with the engine,
The engine mount 140 disposed on a frame or the like of a vehicle body (not shown) is relatively guided to the inside of the U-shape. Further, through holes 126 and 128 are provided at mount mounting positions of the pair of side wall portions 112 and 114, respectively, and bolts 144 are disposed through the through holes 126 and 128 and the inner cylinder 142 of the engine mount 140. Is installed and the nut 146 is tightened,
The inner cylinder 142 is pressed between the side walls 112 and 114, and the engine mount 140 is integrally fixed to the bracket 110. FIG. 3A shows the state before the nut 146 is completely tightened, and the side wall portions 112 and 114 and the inner cylinder 142 are not yet tightened.
And there is a slight gap between them. The bolt 144 and the nut 146 correspond to a fastening member.

[0005] The one engine mount 140 has a double cylindrical shape, and is composed of the inner cylinder 142, the outer cylinder 148, and a rubber member 150 which is an elastic member provided between the inner cylinder 142 and the outer cylinder 148. Cylinder 14
8 is integrally fixed to the frame of the vehicle body and the like,
The end of the inner cylinder 142 engages with the guide part 122 or 124 and is guided relatively inside the bracket 110. The insertion holes 126 and 128 are provided in the engine mount 1.
In consideration of the displacement of the position 40, it has an elongated oval shape in a direction parallel to the back part 116 (or a direction perpendicular to the direction in which the engine mount 140 is inserted). Although the engine mount 140 shown in FIG. 3A is a cross section, hatching is omitted.

The stopper insertion holes 13 are provided below the insertion holes 126 and 128 of the pair of side wall portions 112 and 114, respectively.
0, 132 are provided, and the support portion 134 of the L-shaped stopper 120 projects by a predetermined protrusion dimension H into the inside of the side wall portions 112, 114.
0 without interfering with the outer cylinder 148 or the rubber member 150.
At a predetermined position corresponding to the insertion holes 126 and 128, the inner cylinder 1
42. The pair of stoppers 120 are disposed so that the support portions 134 are symmetrically inwardly facing each other and are substantially parallel to the longitudinal direction of the insertion holes 126 and 128, and are located outside the side wall portions 112 and 114. The part that is brought into close contact is the fillet weld 136.
Thereby, it is integrally fixed to the side wall portions 112 and 114. The reason why the stopper 120 is welded and fixed to the outer side surfaces of the side wall portions 112 and 114 is that, when welding is performed on the inner side, the rubber member 150 of the engine mount 140 may be scratched by a weld bead. .

The main body member 118 and the stopper 120 are
Both are formed by blanking, punching, bending, etc. by pressing, while the main body member 118 is positioned by the insertion holes 126 and 128, and the stopper 120 is positioned by the positioning hole 120h. It is fixed to the main body member 118 by welding. For this reason, the stopper insertion holes 130 and 132 are formed relatively large in consideration of molding errors and dimensional errors during press working, positioning errors during welding, and the like. There are gaps between them.

[0008]

However, in such a conventional bracket 110, the main body member 11 is not provided.
Since the guide portions 122 and 124 are integrally provided so as to partially protrude from the side wall portions 112 and 114 of the
The yield of the material is low, and an extra bending step of the press is required, which increases the manufacturing cost. Further, since the stopper insertion holes 130 and 132 are provided, the side wall portions 112 and 11 are provided.
In order to obtain the required strength, it is necessary to increase the plate thickness. As for the stopper 120, the side wall 1
Since the support portion 134 extends from the outside to the inside of the bases 12 and 114, the length of the support portion 134 is increased, and it is necessary to increase the plate thickness in order to obtain the required rigidity. Also,
If the plate thickness of the main body member 118 varies depending on the type of vehicle or the like, the protrusion dimension H of the support portion 134 changes.
It is necessary to prepare a plurality of types of stoppers 120 having different lengths of the support portions 134 according to the thickness of the stoppers.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has the following objects. (I) To increase the material yield of a main body member and to reduce the number of pressing steps so that it can be manufactured at low cost. . (ii) Eliminate the stopper insertion hole to increase the strength of the main body member and to share the stopper regardless of the difference in the plate thickness of the main body member. (iii) The thickness is reduced and the cost is reduced without impairing the rigidity of the stopper. It is in.

[0010]

In order to achieve the above object, a first aspect of the present invention has a pair of substantially parallel side walls and a back, and has a U-shape as a whole. Side, is integrally fixed to one of the engine and the vehicle body,
A double-cylinder engine mount having an outer cylinder fixed to the other of the engine and the vehicle body, wherein the U-shaped opening is provided between the pair of side walls so as to be substantially perpendicular to the side walls; The inner cylinder is integrally inserted into the side wall of the engine mount by a through hole provided in the pair of side walls and a fastening member disposed through the inner cylinder of the engine mount. An engine mount bracket fixed to the main body, wherein (a) a U-shaped main body member having the pair of side walls and a back portion, and (b) substantially intimate contact with the inside of the pair of side walls, respectively. And a pair of auxiliary plates thinner than the main body member, and the auxiliary plate has (c) a through-hole corresponding to the insertion hole, The edge of the through hole is A squeezing portion that is brought into contact with the end of the mount; and (d) provided continuously with the squeezing portion so as to protrude from the opening-side end of the side wall portion and extend obliquely to the outside of the U-shape. A guide portion for guiding the engine mount relatively inside the U-shape,
(e) a predetermined assembly corresponding to the insertion hole by being bent substantially inwardly from an end of the squeezing portion located on the back side and being engaged with the engine mount, (F) a fillet provided between the guide portion and the pressing portion, outside the bent portion at the boundary between the guide portion and the pressing portion, between the opening-side end portion of the side wall portion. The nip portion is integrally fixed to the side wall portion by welding so as to be substantially in close contact with the inner surface of the side wall portion.

According to a second aspect of the present invention, there is provided the engine mounting bracket according to the first aspect of the present invention, wherein (a) the through hole of the auxiliary plate has the same shape as the through hole of the side wall portion, and the through hole has the through hole. (B) the auxiliary plate is integrally fixed to the side wall portion by the fillet welding at a position corresponding to the bent portion at the boundary between the guide portion and the clamping portion. Projecting from the end of the side wall portion on the opening side by a predetermined dimension, and (c) the fillet welding is performed across both the guide portion and the pinching portion, I do.

[0012]

In such an engine mount bracket, since the guide portion is provided on the auxiliary plate welded and fixed to the main body member, the material yield of the main body member having a large plate thickness is increased, and the auxiliary plate is provided. Since is thin and easy to press, it can be manufactured inexpensively as a whole. Although the stopper portion is provided integrally with the auxiliary plate, the stopper portion is provided inside the pair of side wall portions of the main body member, so that the length of the stopper portion is shortened, and high rigidity is obtained, so that the auxiliary plate is provided. The plate thickness can be reduced, and the configuration can be reduced. Further, since the auxiliary plate is disposed inside the side wall portion of the main body member and is integrally fixed by fillet welding performed on the opening end of the side wall portion, the stopper is provided. The insertion hole is unnecessary, the strength of the main body member is increased, and a common auxiliary plate can be used regardless of the difference in the thickness of the main body member.
The number of parts is reduced and the manufacturing cost is greatly reduced.

In the second invention, the through hole of the auxiliary plate has the same shape as the insertion hole of the side wall portion, and the through hole is integrally fixed to the side wall portion by welding at a position corresponding to the insertion hole. In addition, it is possible to perform fillet welding by positioning with a common positioning jig, so that high positioning accuracy can be obtained, and the positional accuracy of the stopper portion with respect to the insertion hole is improved. This improves workability when the fastening member is inserted into the insertion hole and the inner cylinder to fix the inner cylinder to the bracket.

In the auxiliary plate, the bent portion at the boundary between the guide portion and the pressing portion protrudes from the end of the side wall portion on the opening side by a predetermined size, and straddles both the guide portion and the pressing portion. Since the fillet welding is performed, a portion in the vicinity of the bent portion to be engaged with the inner cylinder of the engine mount is reinforced by welding, so that the strength required for the guide portion can be secured even with a thin auxiliary plate. Particularly, since the bent portion becomes thinner than other portions at the time of press working, reinforcement by fillet welding is effective.

Further, for example, when the bent portion of the auxiliary plate substantially coincides with the opening end of the side wall portion, the vicinity of the bent portion of the clamping portion is formed inside the side wall portion due to deformation (distortion) due to press working. Although there is a possibility that the bent portion protrudes from the side surface, the bent portion protrudes from the end of the side wall portion on the opening side by a predetermined dimension. The auxiliary plate can be firmly welded and fixed to the side wall while the pressure portion is in close contact with the inner surface of the side wall.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An engine mounting bracket according to the present invention is fixed to an engine in such a manner that a generally U-shaped opening side faces upward (or an oblique direction is possible), and is disposed on a vehicle body side while lifting the engine. It is assembled to the inner cylinder of the installed double cylindrical engine mount, but it is also possible to lower the vehicle body, or arrange the engine mount on the engine side and fix the bracket to the vehicle body side The arrangement form is appropriately determined.

The insertion hole provided in the main body member or the through hole of the auxiliary plate may be a circular hole that allows a fastening member such as a bolt to be inserted therein, but a positional deviation from the engine mount is taken into consideration. It is desirable to make a long hole. The pressing portion of the auxiliary plate is provided so as to be reliably brought into contact with the end surface of the inner cylinder of the engine mount whose mounting position is regulated by the through hole and the through hole through the tightening member. When the through hole is a long hole, it is desirable to have a long hole shape corresponding to the long hole.

It is desirable that the through hole of the auxiliary plate has the same shape as the through hole of the side wall portion as in the second invention.
A through hole larger than the insertion hole may be provided as long as the contact state with the end surface of the inner cylinder of the engine mount is not impaired.

In the second invention, the bent portion of the auxiliary plate protrudes from the end of the side wall on the opening side by a predetermined dimension, and the fillet welding is performed across both the guide portion and the clamping portion. In consideration of the displacement between the engine mount and the bracket, a weld bead is provided in the entire area where the inner cylinder of the engine mount is engaged so that the auxiliary plate is reinforced. It is desirable. When deformation (distortion) due to press working is small, it is possible to dispose the bent portion of the auxiliary plate so as to substantially coincide with the opening end of the side wall portion. Can be changed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing an engine mounting bracket 10 (hereinafter, simply referred to as a bracket 10) according to an embodiment of the present invention, wherein (a) is a cross-sectional view corresponding to (a) of FIG. 3 and (b). FIG. 4 is a sectional view taken along line BB in FIG.
This bracket 10 is used in place of the bracket 110 shown in FIG. 3 and includes a pair of substantially parallel side wall portions 1.
A main body member 18 having a U-shape as a whole, having integrally formed 2, 14 and a back portion 16, and disposed so as to be in close contact with the inner surfaces of the side walls 12, 14 of the main body member 18, respectively. And a pair of auxiliary plates 20, 20 having a U-shaped opening facing upward (oblique directions are also possible).
The back part 16 of the main body member 18 is integrally fixed to the engine in such a posture. The main body member 18 has a plate thickness of, for example, 4
A metal plate having a thickness of, for example, about 1.6 mm is used as the auxiliary plate 20.

Insertion holes 22 and 24 are provided at mount mounting positions of the pair of side walls 12 and 14 of the main body member 18, respectively.
The insertion holes 22 and 24 and the engine mount 140 are inserted in a state in which the insertion holes 22 and 24 and the engine mount 140 are inserted substantially vertically to the mounts 14 and 14 to the mount assembly position inside the U-shape.
A bolt 144 is provided to penetrate the inner cylinder 142 and the nut 146 is tightened to clamp the inner cylinder 142 between the side walls 12 and 14, and the engine mount 140 is integrated with the bracket 10. Fixed to The insertion holes 22 and 24 have an oval shape that is long in a direction parallel to the back portion 16 (or a direction perpendicular to the insertion direction of the engine mount 140) in consideration of the displacement of the engine mount 140. Although the engine mount 140 in FIG. 1A is a cross section, hatching is omitted as in the case of FIG.

The auxiliary plate 20 has a flat clamping portion 26 which is brought into close contact with the inner surfaces of the side walls 12 and 14 and is brought into contact with the end surface of the inner cylinder 142 of the engine mount 140, and the openings of the side walls 12 and 14. Side end (Fig. 1 (a),
(b), a guide portion 28 which is provided continuously from the pressing portion 26 so as to protrude from the upper end portion and extend obliquely to the outside of the U-shape, and is located on the back 16 side of the pressing portion 26. Stopper portion 3 bent at a substantially right angle from the end to the inside
0 is integrally provided. The pinching portion 26 is provided with a through hole 26h having the same oval shape as the insertion holes 22 and 24, and the positioning jig is positioned so that the through hole 26h matches the insertion holes 22 and 24. In this state, the auxiliary plate 20 is integrally fixed to the side walls 12 and 14 by welding. Further, the outer shape of the pinching portion 26 is such that it can be reliably brought into contact with the end face of the inner cylinder 142 of the engine mount 140 whose assembly position is regulated via the bolts 144 by the insertion holes 22 and 24, in other words. Inner cylinder 142
Is formed into an oval shape corresponding to the oval shape of the insertion holes 22, 24 and the through hole 26h so that the end face does not protrude from the clamping portion 26.

The guide portion 28 is provided on the engine mount 1 provided on a frame (not shown) of the vehicle body by raising the bracket 10 integrally with the engine.
40 is guided relatively inside the U-shape,
The stopper portion 30 is provided on the outer cylinder 14 of the engine mount 140.
8 and the rubber member 150 without interfering with the insertion hole 2.
2, 24 and the inner cylinder 14 at predetermined positions corresponding to the through holes 26h.
2 so as to protrude inward by a predetermined protrusion dimension H so as to be engaged with the second protrusion 2. This stopper portion 30
Is provided so as to be bent substantially in parallel with the longitudinal direction of the through hole 26h and project inward substantially in parallel with the back portion 16, and the protrusion dimension H is set to, for example, substantially the same as the protrusion dimension H in FIG. Can be

The stopper portions 30 of the auxiliary plates 20, 20 are engaged with both ends of the inner cylinder 142, so that the insertion holes 22, 24, the through holes 26h, and the inner cylinder 14
The engine mount 140 is positioned at an assembling position in which the bolt 144 and the nut 1 are substantially aligned with each other.
The engine mount 140 is integrally assembled to the bracket 10 by clamping the inner cylinder 142 between the side walls 12 and 14 by the 46. FIG. 1A shows the state before the nut 146 is completely tightened.
There is a slight gap between the pressing portions 26, 26 of the auxiliary plates 20, 20 disposed on the second and the second cylinder 14 and the inner cylinder 142. In addition, the R of the inner corner of the stopper portion 30 of the auxiliary plates 20 and 20 is extremely small, and the outer peripheral edges of both ends of the inner cylinder 142 are chamfered.
When they are tightened, they are prevented from interfering with each other.

As is apparent from the enlarged view of FIG. 2, the auxiliary plate 20 has a bent portion 32 at the boundary between the guide portion 28 and the pressing portion 26 which has a predetermined dimension from the opening side ends of the side walls 12 and 14. It is formed so as to protrude, and the pinching portion 26 is formed by fillet welding performed between the opening side end of the side wall portions 12 and 14 outside the bent portion 32.
Are integrally welded and fixed in close contact with the inner side surfaces of the side wall portions 12 and 14. The fillet welding is performed so that the welding bead 34 is provided in substantially the entire region where the inner cylinder 142 of the engine mount 140 is engaged.
In consideration of the misalignment between the bracket 40 and the bracket 40, the bracket 40 extends over both the guide portion 28 and the pinching portion 26,
The welding bead 34 prevents the guide plate 28 from being deformed by engagement with the engine mount 140.
Has been reinforced. In addition, since the fillet welding is performed on the outside of the bent portion 32, the welding bead 34 prevents the rubber member 150 of the engine mount 140 from being flawed.

The main body member 18 and the auxiliary plate 20
Each is formed into a predetermined shape by blanking, drilling, bending, or the like by pressing, and the main body member 18 and the auxiliary plate 20 are shared by a common positioning jig so that the insertion holes 22, 24 and the through hole 26h coincide. The fillet welding is performed on the outside of the bent portion 32 in a state where the holding portion 26 of the auxiliary plate 20 is in close contact with the inner side surfaces of the side wall portions 12 and 14 while being positioned by the tool.

In such a bracket 10, since the guide portion 28 is provided on the auxiliary plate 20 which is welded and fixed to the main body member 18, the main body member 18 having a large plate thickness is provided.
In addition, the material yield is increased, and the auxiliary plate 20 is thin and easy to press. A stopper 30 is also provided integrally with the auxiliary plate 20, but the pair of side walls 12 of the main body member 18,
Since the stopper portion 30 is arranged inside the stopper portion 14, the length of the stopper portion 30 is shortened, high rigidity is obtained, the thickness of the auxiliary plate 20 can be reduced, and the configuration can be further reduced.

Further, the auxiliary plate 20 is disposed inside the side walls 12 and 14 of the main body member 18 as described above, and is integrally fixed by fillet welding performed on the opening side ends of the side walls 12 and 14. The stopper insertion holes 130 and 13 like the bracket 110 in FIG.
2 is unnecessary, the strength of the main body member 18 is increased, and the common auxiliary plate 2 is used regardless of the difference in the thickness of the main body member 18.
0 can be used, and the number of types of parts is reduced, so that the manufacturing cost is greatly reduced.

The through hole 26h of the auxiliary plate 20 has the same shape as the through holes 22 and 24 of the side wall portions 12 and 14, and the through holes 22 and 24 and the through holes 26h match. Since the main body member 18 and the auxiliary plate 20 are positioned by a common positioning jig and fixed integrally by fillet welding, high positioning accuracy can be obtained. The position accuracy of the stopper portion 30 with respect to 24 is improved. Thereby, the bolt 144 is inserted into the insertion holes 22 and 24 and the inner cylinder 142.
And the workability when the inner cylinder 142 is fixed to the bracket 10 by tightening the nut 146 is improved.

The auxiliary plate 20 is provided with a guide 28
Bent portion 32 at the boundary between the pinching portion 26 and the side wall portion 1
2 and 14 are projected from the opening side end portions by a predetermined dimension, and fillet welding is performed across both the guide portion 28 and the pressing portion 26, so that the engine mount 140
The vicinity of the bent portion 32 to be engaged with the inner cylinder 142 is reinforced by the weld bead 34, so that the strength required for the guide portion 28 can be secured even with the thin auxiliary plate 20. In particular, since the bent portion 32 becomes thinner than other portions at the time of press working, reinforcement by the weld bead 34 is effective.

For example, when the bent portion 32 of the auxiliary plate 20 substantially coincides with the opening-side ends of the side wall portions 12 and 14, the bent portion of the clamping portion 26 due to deformation (distortion) caused by press working. Although there is a possibility that the vicinity of 32 may rise from the inner side surfaces of the side wall portions 12 and 14, in this embodiment, the bent portion 32 protrudes from the opening side end of the side wall portions 12 and 14 by a predetermined size. The lifting of the pressing portion 26 due to distortion is prevented, and the pressing portion 26
The auxiliary plate 20 can be firmly welded and fixed to the side wall portions 12 and 14 in a state in which the auxiliary plate 20 is in close contact with the inner side surfaces of the side wall portions 12 and 14.

Although the embodiment of the present invention has been described in detail with reference to the drawings, this is merely an embodiment,
The present invention can be implemented in various modified and improved aspects based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a view showing an engine mount bracket according to an embodiment of the present invention, wherein FIG. 1 (a) is a sectional view and FIG. 1 (b) is a sectional view taken along line BB in FIG. 1 (a).

FIG. 2 is a cross-sectional view showing the vicinity of a guide portion of one auxiliary plate of the engine mounting bracket of FIG. 1;

3A and 3B are views showing a conventional engine mounting bracket, wherein FIG. 3A is a sectional view taken along line AA of FIG. 3B, and FIG. 3B is a left side view of FIG.

[Explanation of symbols]

10: Bracket 12, 14: Side wall 16: Back 18: Main body member 20: Auxiliary plate 22, 24: Insertion hole 26:
Nipping part 26h: Through hole 28: Guide part 3
0: stopper portion 32: bent portion 34: weld bead 140: engine mount 142: inner cylinder 144: bolt (tightening member) 146: nut (tightening member) 148: outer cylinder

Claims (2)

[Claims] 1. A U-shape as a whole having a pair of substantially parallel side walls and a back portion, and the back portion is integrally fixed to one of an engine and a vehicle body, and And a double-cylindrical engine mount in which an outer cylinder is fixed to the other side of the vehicle body, from the opening side of the U-shape in a posture substantially perpendicular to the side wall portion between the pair of side wall portions. The inner cylinder is integrally inserted into the side walls by a through hole provided in the pair of side walls and a fastening member disposed through the inner cylinder of the engine mount. An engine mount bracket to be fixed, wherein a U-shaped main body member having the pair of side walls and a back portion is provided, and the U-shaped main body member is disposed so as to be substantially in contact with the inside of the pair of side walls. A pair of auxiliary plates thinner than the main body member, The auxiliary plate has a through-hole corresponding to the insertion hole, and a pressing portion in which a peripheral portion of the through-hole is brought into contact with an end of the engine mount. The engine mount is protruded from the opening side end of the side wall portion and is provided continuously to the pressing portion so as to extend obliquely to the outside of the U-shape, and relatively moves the engine mount toward the inside of the U-shape. A guide portion for guiding, a predetermined angle corresponding to the insertion hole corresponding to the insertion hole by being bent at a substantially right angle inward from an end located on the back side of the holding portion and being engaged with the engine mount; And a stopper portion positioned at an assembling position, wherein a fillet is provided between an opening-side end portion of the side wall portion outside a bent portion at a boundary between the guide portion and the clamping portion. By welding An engine mounting bracket, wherein the clamping portion is integrally fixed to the side wall portion so as to be substantially in close contact with an inner surface of the side wall portion. 2. The through hole of the auxiliary plate has the same shape as the insertion hole of the side wall portion, and the auxiliary plate is formed by the fillet welding at the position where the through hole coincides with the insertion hole. The auxiliary plate has a bent portion at a boundary between the guide portion and the clamping portion protruding by a predetermined dimension from an opening-side end of the side wall portion; The engine mount bracket according to claim 1, wherein the meat welding is performed astride both the guide portion and the pinching portion.