JP4797085B2 - Shock absorption structure in the engine room - Google Patents

Description

  The present invention relates to an impact absorbing structure in an engine room, and more particularly to an impact absorbing structure in an engine room in which auxiliary equipment such as a brake device is fixed to the engine via a bracket.

  Conventionally, auxiliary machinery such as a brake device fixed to the engine via a mounting bracket is disposed in a predetermined position in the engine room (see, for example, Patent Document 1 and Patent Document 2). For example, as shown in FIG. 4 (A), a first auxiliary machine 61 is fixed to the front side of the cylinder 60A side of the engine 60 and a second auxiliary machine 62 is fixed to the rear side of the vehicle. Yes. The first auxiliary machine 61 is directly fixed to the cylinder head 60 </ b> A side of the engine 60 by bolts (not shown). On the other hand, the second auxiliary machine 62 is fixed to the cylinder head 60 </ b> A side of the engine 60 by a bolt (not shown) via an auxiliary machine mounting bracket 63. In this state, the first auxiliary machine 61 and the second auxiliary machine 62 are arranged on substantially the same horizontal position.

  As shown in FIG. 4B, the accessory mounting bracket 63 extends to the vehicle front side of the accessory fixing plate surface 63a for fixing the second accessory 62 and the auxiliary device fixing plate surface 63a. It is comprised from the inclination board surface 63b formed so that it might rise toward the front. The second auxiliary machine 62 is fixed to the auxiliary machine mounting bracket 63 by using three auxiliary machine fixing brackets 64A, 64B, 64C. One accessory fixing bracket 64A for fixing the vehicle front side of the second accessory 62 to the accessory mounting bracket 63 is formed by bending the accessory fixing plate surface 63a and the inclined plate surface 63b of the accessory mounting bracket 63. The two accessory fixing brackets 64B and 64C that are fixed to the bracket mounting plate surface 63c formed in the part and fix the vehicle rear side of the second accessory 62 to the accessory mounting bracket 63 are the accessory fixing plates. The surface 63a is fixed to the rear end portion of the surface 63a.

  These accessory fixing brackets 64A, 64B, and 64C include a U-shaped accessory fixing portion 64a and a bracket fixing portion 64b that extends in a state of being bent at substantially right angles at both ends of the accessory fixing portion 64a. , 64b. Further, in order to fix the accessory fixing brackets 64A, 64B, and 64C to the accessory mounting bracket 63 with bolts 65 and 65 on the two bracket fixing portions 64b and 64b, respectively, A bolt mounting hole (not shown) made of a U-shaped notch that opens to the side is provided.

  With such a structure, an automobile incorporating an engine 60 in which the first auxiliary machine 61 is fixed to the front side of the cylinder head and the second auxiliary machine 62 is fixed to the rear side of the vehicle is mounted on the front surface. When the collision occurs, the second auxiliary machine 62 is moved by the impact so that the three auxiliary machine fixing brackets 64A, 64B, 64C are detached from the respective bolts 65, 65 and move forward of the vehicle and the auxiliary machine mounting bracket 63 It slides up diagonally upward along the inclined plate surface 63b. The second auxiliary machine 62 slides up obliquely upward along the inclined plate surface 63b of the auxiliary machine mounting bracket 63, thereby causing a frontal collision with the first auxiliary machine 61 arranged on substantially the same horizontal position. Strong interference can be avoided.

No. 3-4756 JP-A-9-184427

  However, in the shock absorbing structure in the engine room described in the background art, it is fixed to the bracket mounting plate surface 63c formed at the bent portion of the auxiliary device fixing plate surface 63a and the inclined plate surface 63b of the auxiliary device mounting bracket 63. Since the side surface shape of the accessory fixing bracket 64A is rectangular, as shown in FIGS. 5A and 5B, the accessory fixing that moves by the force F by the second accessory 62 to the front side of the vehicle due to a frontal collision is performed. In the metal fitting 64A, the bracket fixing portions 64b and 64b are hooked on the bent portions of the auxiliary machine fixing plate surface 63a and the inclined plate surface 63b of the auxiliary device mounting bracket 63.

  When the bracket fixing portions 64b and 64b of the accessory fixing bracket 64A are caught by the bent portions of the accessory fixing plate surface 63a and the inclined plate surface 63b of the accessory mounting bracket 63, the accessory fixing bracket 64A is second. Since the second auxiliary machine 62 moving to the front side of the vehicle has an auxiliary equipment fixing bracket 64A that has fallen to the front side of the vehicle. It becomes a stopper and cannot slide up the inclined plate surface 63b of the accessory mounting bracket 63. Therefore, since the first auxiliary machine 61 and the second auxiliary machine 62 are subjected to the impact force due to the frontal collision while being located on substantially the same horizontal position, these auxiliary machines interfere strongly with each other. The auxiliary machine 62 is pushed by the first auxiliary machine 61 and greatly enters the vehicle interior side. This reduces occupant protection performance.

  The second auxiliary device 62 is disposed above the horizontal position of the first auxiliary device 61, thereby preventing strong interference between the second auxiliary device 62 and the first auxiliary device 61. Although the reduction can be prevented, the gap between the first auxiliary device 61 and the second auxiliary device 62 becomes narrow, so that the impact level that the pedestrian head receives from the bonnet or the like when the automobile collides with the pedestrian is reduced. It will become high and will reduce pedestrian protection performance.

  The present invention has been made to solve such a conventional difficulty, and an engine room that can prevent strong interference of auxiliary devices respectively disposed on the front and rear sides of the cylinder head side of the engine due to a frontal collision. An object of the present invention is to provide a shock absorbing structure.

  The shock absorbing structure in the engine room, which is the first mode for achieving the above object, has a first auxiliary machine fixed on the front side of the vehicle on the cylinder head side of the engine and a second side on the rear side of the vehicle. In the engine room in which the auxiliary machine is fixed by the auxiliary machine mounting bracket, the auxiliary machine mounting bracket for fixing the second auxiliary machine to the cylinder head includes an auxiliary machine fixing plate surface for fixing the second auxiliary machine, An inclined plate surface extending toward the vehicle front side of the auxiliary device fixing plate surface and formed to rise toward the front of the vehicle, and a plurality of auxiliary devices for fixing the second auxiliary device to the auxiliary device mounting bracket An auxiliary machine fixing bracket configured to fix the front side of the second auxiliary machine to the auxiliary machine mounting bracket is constituted by a fixing part for fixing to the auxiliary machine fixing plate surface of the auxiliary machine mounting bracket. , Extended to the fixed part, the engine collides front To the fixing section is disengaged from the accessory mounting bracket, are those formed from an inclined portion consisting of sliding possible inclination angle along the inclined plate surface of the accessory mounting bracket. In the present specification, “extended” means provided in an extended state.

  According to the shock absorbing structure in the engine room which is the first aspect as described above, when the frontal collision occurs, the second auxiliary machine releases the three auxiliary machine fixing brackets from the respective bolts by the shock, and the front side of the vehicle The accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket when moving to the accessory fixing plate surface of the accessory mounting bracket by the force of the second accessory. It moves while sliding on top and comes into contact with the bent portion of the auxiliary machine fixing plate surface and the inclined plate surface. The accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket is for attaching the accessory when the inclined portion comes into contact with the bent portion of the accessory fixing plate surface and the inclined plate surface. Since the direction of the force by the second accessory can be changed along the inclined plate surface of the bracket, the accessory fixing bracket can be slid along the inclined plate surface of the auxiliary device mounting bracket.

  According to a second aspect of the present invention, in the shock absorbing structure in the engine room according to the first aspect, the accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket includes a fixing portion. In order to detachably fix to the accessory mounting bracket with the fastening member, a bolt mounting hole made of a U-shaped notch that opens on the vehicle rear side is provided.

  According to the shock absorbing structure in the engine room which is the second aspect as described above, the accessory fixing bracket can be detached from the accessory mounting bracket according to the tightening torque of the fastening member. The tightening torque can be managed according to the load of the auxiliary machine.

  According to a third aspect of the present invention, in the shock absorbing structure in the engine room according to the first aspect or the second aspect, the accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket. Is formed so that the inclined part becomes narrower from the intersection part with the fixed part toward the tip part.

  According to the shock absorbing structure in the engine room which is the third aspect as described above, it is possible to prevent the sliding direction on the inclined plate surface of the accessory mounting bracket from being shifted.

  According to a fourth aspect of the present invention, in the impact absorbing structure in the engine room according to the third aspect, the accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket is at least an intersection portion. Both edges from the top toward the tip are bent upward.

  According to the shock absorbing structure in the engine room which is the fourth aspect as described above, when the accessory mounting bracket slides up on the inclined plate surface of the auxiliary device mounting bracket, the auxiliary device fixing bracket is stuck in the inclined plate surface. Can be prevented.

  According to the shock absorbing structure in the engine room of the present invention, strong interference due to a frontal collision with the first auxiliary machine and the second auxiliary machine arranged on substantially the same horizontal position in order to prevent a decrease in occupant protection performance. It can be avoided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the preferable embodiment example by the impact-absorbing structure in the engine room of this invention, (A) is a side view by the side of the cylinder head of an engine, (B) is a perspective view of the bracket for auxiliary equipment attachment, (C). It is a perspective view of an auxiliary machine fixing bracket. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the bracket for auxiliary equipment used for the impact-absorbing structure in the engine room of this invention, (A) is a top view, (B) is a right view of (A), (C) is a lower surface of (A). FIG. It is operation | movement explanatory drawing of the shock absorption structure in the engine room of this invention, (A) is a figure at the time of normal, (B) is a figure at the time of front collision. It is a figure which shows the impact-absorbing structure in the conventional engine room, (A) is a side view by the side of the cylinder head of an engine, (B) is a perspective view of the bracket for auxiliary equipment attachment. It is operation | movement explanatory drawing of the impact absorption structure in the conventional engine room, (A) is a figure at the time of normal, (B) is a figure at the time of front collision.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for implementing an impact absorbing structure in an engine room of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 (A), an engine to which the shock absorbing structure in the engine room of the present invention is applied has a first auxiliary machine 2 such as a brake device on the front side of the cylinder head 1A side of the engine 1. A second auxiliary machine 3 such as an inverter is fixed to the rear side of the vehicle. The first auxiliary machine 2 is directly fixed to the cylinder head 1A side of the engine 1 with bolts (not shown). On the other hand, the second auxiliary machine 3 is fixed to the cylinder head 1A side of the engine 1 by bolts (not shown) via an auxiliary machine mounting bracket 4.

  As shown in FIG. 1 (B), the auxiliary equipment mounting bracket 4 extends to the auxiliary equipment fixing plate surface 4a for fixing the second auxiliary equipment 3 and the front side of the auxiliary equipment fixing plate surface 4a. It is comprised from the inclination board surface 4b formed so that it might rise toward the front. Further, the second auxiliary machine 3 is fixed to the auxiliary machine mounting bracket 4 by using three auxiliary machine fixing brackets 5, 6A, 6B.

  One accessory fixing bracket 5 that fixes the vehicle front side of the second accessory 3 to the accessory mounting bracket 4 is formed by bending the accessory fixing plate surface 4 a and the inclined plate surface 4 b of the accessory mounting bracket 4. The two accessory fixing brackets 6A and 6B, which are fixed to the bracket mounting plate surface 4c formed at the part and fix the vehicle rear side of the second accessory 3 to the accessory mounting bracket 4, are the accessory fixing plates. It is spaced apart and fixed to the rear end of the surface 4a.

  One accessory fixing bracket 5 for fixing the vehicle front side of the second accessory 3 to the bracket mounting plate surface 4c of the accessory mounting bracket 4 is shown in FIGS. 1 (C), 2 (A), (B), As shown in (C), a fixing part 5a for fixing to the auxiliary machine fixing plate surface 4a of the auxiliary machine mounting bracket 4 and a fixed part extending from the fixing part and detached from the auxiliary machine mounting bracket when the engine collides front. Then, it forms from the inclination part 5b which consists of the inclination angle which can be slid along the inclination board surface 4b of the bracket for auxiliary equipment attachment. The fixed portion 5a and the inclined portion 5b are each formed in a convex shape having a space portion, and are bent substantially at right angles to the auxiliary side section 51 having a substantially U-shape and both ends of the auxiliary side section 51, respectively. It is comprised from the bracket side area 52 and 52 extended in the state.

  By forming the accessory fixing bracket 5 in this way, it becomes possible to slide up along the inclined plate surface 4b of the accessory mounting bracket 4, so that the accessory mounting bracket 4 is the second one. It is possible to prevent the vehicle from falling forward due to the force F generated by the auxiliary device 62. Note that an optimal value for the inclination angle can be obtained by a frontal collision test. That is, the inclination angle is such that both the passenger protection performance and the pedestrian protection performance can be satisfied.

  Further, as shown in FIG. 2C, on the side surface of the accessory fixing bracket 5, when the surface of the fixing portion 5a is used as a dimensional reference, the width of the fixing portion 5a is b and the width of the inclined portion 5b is a. , A> b is preferable. By setting in this way, the inclined portion 5b can easily slide up along the inclined plate surface 4b of the accessory mounting bracket 4.

  In addition, this auxiliary equipment fixing bracket 5 is a bolt attachment composed of a U-shaped notch that opens to the rear side of the vehicle in order to fix the fixing portion 5a to the auxiliary equipment mounting bracket 4 with the fastening member 7. Holes 5c and 5c are provided. By providing such bolt mounting holes 5 c and 5 c in the accessory fixing bracket 5, the accessory fixing bracket 5 can be detached from the accessory mounting bracket 4 according to the tightening torque of the fastening member 7. Therefore, the tightening torque can be managed according to the load of the second auxiliary machine 3. As the fastening member 7, for example, a screw bolt or a through bolt can be used. In the case of through bolts, nuts for tightening are required.

  The accessory fixing bracket 5 is formed such that the inclined portion 5b becomes narrower from the intersection with the fixing portion 5a toward the tip. By forming the accessory fixing bracket 5 in this way, it is possible to prevent the sliding direction on the inclined plate surface 4b of the accessory mounting bracket 4 from being shifted.

  Further, the accessory fixing bracket 5 is formed by bending at least both edges from the intersection portion of the inclined portion 5b and the fixing portion 5a toward the tip portion to form flanges 5c and 5c. Yes. In the drawing, the flanges 5c and 5c of the accessory fixing bracket 5 are extended to the rear end of the fixing portion 5a. By forming the accessory fixing bracket 5 in this way, when the accessory fixing bracket 5 is slid up on the inclined plate surface 4b of the accessory mounting bracket 4, the accessory fixing bracket 5 is stuck in the inclined plate surface 4b. Can be prevented. That is, if such flanges 5 c and 5 c are not formed on the accessory fixing bracket 5, the edge formed at the plate end of the accessory fixing bracket 5 is the inclined plate surface of the accessory mounting bracket 4. It is because it pierces 4b.

  The two accessory fixing brackets 6A and 6B for fixing the vehicle rear side of the second accessory to the accessory mounting bracket are each formed in a convex shape having a space portion, as shown in FIG. The auxiliary machine fixing part 6a has a substantially U-shape, and bracket fixing parts 6b and 6b that are bent at substantially right angles at both ends of the auxiliary machine fixing part 6a. In addition, in order to fix the accessory fixing brackets 6A and 6B to the accessory mounting bracket 4 with bolts 8 and 8, respectively, on the two bracket fixing portions 6b and 6b, A bolt mounting hole (not shown) made of a U-shaped notch is provided.

  When an automobile incorporating an engine to which the shock absorbing structure in the engine room of the present invention configured as described above is installed collides front, as shown in FIGS. 3A and 3B, the second auxiliary machine 3 is used. When the three auxiliary equipment fixing brackets 5, 6A, 6B are detached from the bolts 7, 8 by the impact and move to the front side of the vehicle, the auxiliary equipment is attached to the front side of the second auxiliary equipment 3. The accessory fixing bracket 5 fixed to the bracket 4 moves while sliding on the accessory fixing plate surface 4a of the accessory mounting bracket 4 by the force F of the second accessory 3, and the accessory fixing plate surface 4a. And the bent portion of the inclined plate surface 4b. When the inclined portion 5b comes into contact with the bent portion of the auxiliary device fixing plate surface 4a and the inclined plate surface 4b, the auxiliary device fixing bracket 5 is moved along the inclined plate surface 4b of the auxiliary device mounting bracket 4 with the second auxiliary member. Since the direction of the force F by the machine 3 can be changed, the accessory fixing bracket 5 can be slid up along the inclined plate surface 4 b of the accessory mounting bracket 4. Accordingly, it is possible to avoid strong interference due to a frontal collision with the first auxiliary machine 2 and the second auxiliary machine 3 that are arranged on substantially the same horizontal position in order to prevent a decrease in passenger protection performance.

  Although the present invention has been described with the specific embodiments shown in the drawings, the present invention is not limited to the embodiments shown in the drawings, and is known so far as long as the effects of the present invention are achieved. It goes without saying that any configuration can be adopted.

DESCRIPTION OF SYMBOLS 1 ... Engine 1A ... Cylinder head 2 ... 1st auxiliary machine 3 ... 2nd auxiliary machine 4 ... Auxiliary equipment mounting bracket 4a ... Auxiliary machine fixing plate surface 4b ... Inclined plate surface 5 ... Auxiliary fixture 5a …… Fixed portion 5b …… Inclined portion 5c …… Bolt mounting hole 7 …… Fastening member

Claims (4)

In the engine room where the first auxiliary machine is fixed to the front side of the vehicle on the cylinder head side of the engine and the second auxiliary machine is fixed to the rear side of the vehicle by an auxiliary equipment mounting bracket,
The auxiliary equipment mounting bracket for fixing the second auxiliary machine to the cylinder head extends to an auxiliary machine fixing plate surface for fixing the second auxiliary machine and a vehicle front side of the auxiliary machine fixing plate surface. And an inclined plate surface formed so as to rise toward the front of the vehicle, and a plurality of accessory fixing brackets for fixing the second accessory to the accessory mounting bracket.
The accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket includes a fixing portion for fixing to the accessory fixing plate surface of the accessory mounting bracket, and the fixing And an inclined portion having an inclination angle capable of sliding along the inclined plate surface of the auxiliary equipment mounting bracket when the fixed part is detached from the auxiliary equipment mounting bracket in the event of a frontal collision of the engine. A shock absorbing structure in an engine room characterized by being formed.   The accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket is configured to fix the fixing portion detachably to the accessory mounting bracket with a fastening member. 2. A shock absorbing structure in an engine room according to claim 1, further comprising a bolt mounting hole made of a U-shaped notch that opens to the vehicle rear side.   The accessory fixing bracket for fixing the vehicle front side of the second accessory to the accessory mounting bracket is formed so that the inclined portion becomes narrower from the intersection with the fixing portion toward the tip. The shock absorbing structure in the engine room according to claim 1 or 2, wherein the shock absorbing structure is provided.   The accessory fixing bracket that fixes the vehicle front side of the second accessory to the accessory mounting bracket is bent at least at both edges from the intersection to the tip. 4. The shock absorbing structure for an engine room according to claim 3, wherein the shock absorbing structure is used.

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