JP2014125171A - Front structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front structure of a vehicle capable of preventing and suppressing damage on an electricity controlling apparatus upon front collision.SOLUTION: An inverter 50 is fixed on a sliding mechanism 24 on which a movable side construction part 24B is slidably held to the rear side of the vehicle. Front surface part 50M of the inverter 50 is arranged at the rear side of the vehicle rather than a front end surface 24M of the movable side construction part 24B. The upper surface part 20U of a radiator support 20 and a front edge upper surface part 50A of the inverter 50 are connected with a swing stopper bracket 60. The swing stopper bracket 60 may rotate around a section changing part 60Y at the side of a rear end part 60C as a rotation center in a vehicle side view when the upper part of the radiator support 20 is subjected to load F from the front side of the vehicle. The height position of a front upper surface part 50A of the inverter 50 is arranged at the upper side of the vehicle rather than the height position of the upper surface part 20U of the radiator support 20.

Description

  The present invention relates to a vehicle front structure.

  There is a structure in which a power control device is mounted on the front of the vehicle (see, for example, Patent Document 1). In such a structure, for example, by arranging an auxiliary battery on the vehicle front side of the electric power control device, the auxiliary battery can connect the electric power control device in the event of a frontal collision of the vehicle (hereinafter referred to as “front collision”). The power control device is pushed out by pushing out toward the vehicle rear side.

JP 2012-166653 A

  However, in this structure, since the auxiliary battery directly hits the power control device at the time of the front collision, there is room for improvement from the viewpoint of preventing or suppressing damage to the power control device at the time of the front collision.

  In view of the above fact, an object of the present invention is to obtain a vehicle front structure that can prevent or suppress damage to a power control device at the time of a front collision.

  The vehicle front portion structure of the present invention described in claim 1 is disposed on a pair of left and right front side members disposed on both sides of the vehicle front portion with the vehicle longitudinal direction as a longitudinal direction, and on the front end portion side of the vehicle front portion. A radiator support that is configured in a frame shape when viewed from the front of the vehicle, and a slider that is attached to the front side member, disposed closer to the vehicle rear side than the radiator support, and is slidably held toward the vehicle rear side. A sliding mechanism and a front surface portion fixed on the slider and disposed on the rear side of the vehicle from the front end surface of the slider, and the height position of the upper surface portion of the front end is higher than the height position of the upper surface portion of the radiator support. A first distance from the upper surface of the front end to the upper surface of the radiator support in the vehicle side view and the upper surface of the front end A power control device in which the second distance to the front end surface of the rider is set to be equal, and the upper surface portion of the radiator support and the upper surface portion of the front end of the power control device are connected, and the upper portion of the radiator support is the front side of the vehicle And a connecting member that can be rotated about the attachment side of the power control device to the upper surface of the front end when viewed from the side of the vehicle when viewed from the side of the vehicle.

  According to the vehicle front part structure of the present invention described in claim 1, the slide mechanism attached to the front side member is disposed on the vehicle rear side with respect to the radiator support, and the slider is slidable on the vehicle rear side. Is retained. In addition, a power control device is fixed on the slider, and the front portion of the power control device is disposed on the vehicle rear side with respect to the front end surface of the slider. For this reason, when the front end surface of the slider receives a load of a predetermined value or more from the front side of the vehicle, the power control device moves to the rear side of the vehicle together with the slider even if the load does not act directly on the front surface of the power control device. Slide.

  On the other hand, the upper surface part of the radiator support and the front end upper surface part of the power control device are connected by a connecting member. When the upper part of the radiator support receives a load from the front side of the vehicle, the connecting member can rotate around the attachment side to the front end upper surface portion of the power control device as viewed from the side of the vehicle. Here, in the power control device, the height position of the upper surface portion of the front end is set on the vehicle upper side than the height position of the upper surface portion of the radiator support. For this reason, when the upper part of the radiator support receives a load from the front side of the vehicle at the time of a front collision, the connecting member rotates and moves rearward and downward with the attachment side to the front end upper surface of the power control device as the rotation center. Push down on the upper part of the radiator support. Therefore, the deformation mode of the radiator support is controlled by the connecting member.

  In the power control device, a first distance from the front end upper surface portion to the upper surface portion of the radiator support and a second distance from the front end upper surface portion to the front end surface of the slider are set to be equal in a vehicle side view. Therefore, when the connecting member rotates and moves rearward and downward with the attachment side to the upper surface of the front end of the power control device as the center of rotation, the upper part of the radiator support hits the front end surface of the slider and presses the front end surface of the slider toward the rear side of the vehicle To do.

  That is, at the time of a front collision, the upper part of the radiator support is pushed down to the rear lower side by rotating the connecting member, and the pushed upper part of the radiator support presses the front end surface of the slider to the rear side of the vehicle. Accordingly, the power control device slides to the vehicle rear side together with the slider even if the front surface portion is not directly pressed during the front collision. In other words, even if there is a variation in the collision mode at the time of the front collision, it is possible to retract the power control device while avoiding the radiator support and the arrangement within the frame from directly colliding with the power control device.

  According to a second aspect of the present invention, there is provided the vehicle front structure according to the first aspect, wherein the connecting member is formed of a pipe material and is fixed to the upper surface portion of the radiator support and the power control. The rear end portion fixed to the upper end portion of the front end of the device is formed to be flattened and an intermediate portion between the front end portion and the rear end portion is formed in a cylindrical shape.

  According to the vehicle front portion structure of the present invention as set forth in claim 2, the connecting member is formed of a pipe material, the front end portion and the rear end portion are flattened and formed, and the intermediate portion is formed in a cylindrical shape. Therefore, the boundary portion between the front end portion and the intermediate portion and the boundary portion between the rear end portion and the intermediate portion become the cross-section changing portion. Therefore, when the upper part of the radiator support receives a load from the front side of the vehicle at the time of a front collision, the connecting member is bent and deformed starting from the boundary part between the front end part and the intermediate part and the boundary part between the rear end part and the intermediate part. However, the intermediate portion rotates and moves rearward and downward while maintaining the cylindrical shape. For this reason, the front end surface of the slider is pressed to the vehicle rear side at the time of a front collision, although it is a simple structure.

  According to a third aspect of the present invention, there is provided the vehicle front portion structure according to the first or second aspect, wherein the slide mechanism includes a lower tray fixed to the front side member, and a slider. An upper tray configured to be partially or entirely mounted on the lower tray and slidably held to the vehicle rear side with respect to the lower tray.

  According to the vehicle front portion structure of the present invention described in claim 3, the slide mechanism includes the lower tray and the upper tray, and the upper tray constitutes a part or all of the slider and is placed on the lower tray. It is placed and slidably held on the rear side of the vehicle with respect to the lower tray. For this reason, compared with the case where the power control device and the slider are supported on the side of the front side member without using the lower tray, the support strength of the power control device and the slider is increased, and the upper tray is located above the lower tray in the case of a front collision. Slide stably.

  According to a fourth aspect of the present invention, there is provided the vehicle front portion structure according to the third aspect, wherein the front end surface of the lower tray is set on the vehicle rear side with respect to the front end surface of the slider provided with the upper tray. In addition, the front end of the lower tray is disposed away from the upper tray on the vehicle lower side.

  According to the vehicle front structure of the present invention as set forth in claim 4, if the upper part of the radiator support hits the front end face of the slider at the time of the front collision, a part of the upper part of the radiator support is in the vicinity immediately below the front end face of the slider. Even if it is located at the position, the part does not hit the front end surface of the lower tray. For this reason, the slider and the power control device stably move relative to the lower tray during the front collision.

  As described above, according to the vehicle front portion structure of the first aspect of the present invention, there is an excellent effect that damage to the power control device can be prevented or suppressed at the time of a front collision.

  According to the vehicle front structure according to the second aspect, there is an excellent effect that the power control device can be slid to the rear side of the vehicle at the time of the front collision although it has a simple configuration.

  According to the vehicle front structure according to the third aspect, it is possible to increase the support strength of the power control device and the slider, and to have an excellent effect that the upper tray can be stably slid in the case of a front collision.

  According to the vehicle front structure according to the fourth aspect, there is an excellent effect that the upper tray and the power control device can be stably moved relative to the lower tray at the time of the front collision.

It is a perspective view which shows the vehicle front part structure which concerns on one Embodiment of this invention. It is a disassembled perspective view which shows the vehicle front part structure which concerns on one Embodiment of this invention. It is a side view showing the vehicle front part structure concerning one embodiment of the present invention. It is a side view which shows the state at the time of front collision. FIG. 4A shows a state in which the upper portion of the radiator support has hit the front end surface of the movable side component. FIG. 4B shows a state in which the movable side component and the power control device are displaced to the vehicle rear side. It is a top view which shows the principal part of a slide mechanism in order to demonstrate the effect | action at the time of front collision. FIG. 5 (A) shows a state before the movable side structural portion slides. FIG. 5 (B) shows a state in which the movable side component is slid.

(Configuration of the embodiment)
A vehicle front structure according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  1 is a perspective view of a vehicle front structure according to the present embodiment, FIG. 2 is an exploded perspective view of the vehicle front structure, and FIG. 3 is a vehicle front structure. It is shown in a side view.

  As shown in FIG. 1, an engine room 12 (also referred to as “engine compartment”) in which an inverter 50 or the like as a power control device described later is accommodated is formed in the vehicle front portion 10. A pair of left and right front side members 14 are arranged on both sides of the vehicle front portion 10 with the vehicle front-rear direction as the longitudinal direction. The front side member 14 includes a front side member inner 14 </ b> A having a hat-shaped cross section that forms an inner portion in the vehicle width direction and opens outward in the vehicle width direction. The opening portion of the front side member inner 14A is closed by a long plate-shaped front side member outer 14B that constitutes an outer portion of the front side member 14 in the vehicle width direction. That is, the front side member 14 is configured in a closed cross-sectional structure by the front side member inner 14A and the front side member outer 14B.

  As shown in FIG. 3, a cylindrical crash box 16 is disposed at the front end of the front side member 14 so as to be continuous with the vehicle front side. In addition, it arrange | positions along the vehicle width direction so that the elongate front bumper reinforcement (not shown) may be spanned between the front-end parts of the left and right crash boxes 16. On the vehicle rear side of the front bumper reinforcement on the front end side of the vehicle front portion 10, a radiator support 20 configured in a substantially rectangular frame shape when viewed from the front of the vehicle is disposed. The radiator support 20 is attached to the front bumper reinforcement via an attachment member.

  As shown in FIG. 1, the radiator support 20 includes a long radiator support upper 20 </ b> A that constitutes the upper side portion of the radiator support 20 and extends along the vehicle width direction. On the lower side of the radiator support upper 20 </ b> A, a long radiator support lower 20 </ b> B that constitutes the lower side portion of the radiator support 20 and extends along the vehicle width direction is provided. Further, both ends in the longitudinal direction of the radiator support upper 20A and both ends in the longitudinal direction of the radiator support lower 20B are connected in the vertical direction of the vehicle by a pair of left and right radiator support sides 20C constituting the side sides of the radiator support 20. ing. Within the frame of the radiator support 20, a radiator, a condenser for air conditioning, a fan shroud, a fan, and the like, all of which are not shown, are disposed.

  On the other hand, a slide mechanism 24 is attached to the front side member 14 in a cantilever state. The slide mechanism 24 is disposed on the vehicle rear side with respect to the radiator support 20. As shown in FIG. 2, the slide mechanism 24 includes a fixed-side component 24 </ b> A that forms the lower side thereof, and a slider that is disposed above the fixed-side component 24 </ b> A and is slidably held toward the vehicle rear side. The movable-side component 24B. The slide mechanism 24 is a component that can be grasped as a detachment mechanism.

  The fixed side component 24 </ b> A includes a bracket 26 and a lower tray 28. The bracket 26 is formed in a substantially hat shape that opens to the vehicle lower side in a side view of the vehicle. A pair of front and rear flange portions 26A and 26B formed at the lower end portion of the bracket 26 are for fastening, and are overlapped and fastened to the upper wall portion 14U of the front side member inner 14A (see FIG. 1). Specifically, bolt insertion holes (not shown) are formed through the flange portions 26A and 26B of the bracket 26, and correspondingly, the bolt insertion holes 14X, 14Y is formed through. In addition, weld nuts (not shown) are fixed in advance to the outer peripheral portions of the bolt insertion holes 14X and 14Y on the lower surface of the fastened portion of the front side member inner 14A. The weld nut includes a shaft portion of bolts 30A and 30B penetrating from the vehicle upper side through the bolt insertion holes of the flange portions 26A and 26B of the bracket 26 and the bolt insertion holes 14X and 14Y of the fastened portion of the front side member inner 14A. Are screwed together. Thereby, the bracket 26 is bolted to the front side member inner 14A.

  The top wall portion 26C of the bracket 26 is joined by spot welding (the spot is indicated by “x”) with the front end portion (end portion on the vehicle front side) 28A of the lower tray 28 placed thereon. The lower tray 28 is arranged with the vehicle front-rear direction as a longitudinal direction in a plan view of the vehicle, is formed in a substantially hat shape that opens to the vehicle lower side in a front view of the vehicle, and includes a ceiling wall portion 28U in the middle in the vehicle width direction. In addition, flange portions are provided on both sides in the vehicle width direction. Of the front end portion 28A of the lower tray 28, the connecting portion to the top wall portion 26C of the bracket 26 is a flange front end portion 28A1 that constitutes a vehicle width direction outer side portion of the front end portion 28A, and a vehicle width direction inner side of the front end portion 28A. The concave portion 28A2 is formed.

  Further, in the portion near the rear end inclined portion (end portion on the vehicle rear side) 28E of the lower tray 28, flange rear portions 28D1 and 28D2 constituting the portions on both sides in the vehicle width direction are used for fastening. The flange rear portions 28D1 and 28D2 are overlapped and fastened to the fastened portions 32A and 32B of the mount 32 attached to the front side member inner 14A. Specifically, bolt insertion holes (not shown) are formed through the flange rear portions 28D1 and 28D2 of the lower tray 28, and correspondingly, the bolt insertion holes 32X are also inserted into the fastened portions 32A and 32B of the mount 32. , 32Y is formed through. Further, weld nuts (not shown) are fixed in advance to the outer peripheral portions of the bolt insertion holes 32X and 32Y on the lower surfaces of the fastened portions 32A and 32B of the mount 32. The weld nut includes shafts of bolts 30C and 30D penetrating from the upper side of the vehicle through the bolt insertion holes of the flange rear portions 28D1 and 28D2 of the lower tray 28 and the bolt insertion holes 32X and 32Y of the fastened portions 32A and 32B of the mount 32. The parts are screwed together. As a result, the lower tray 28 is bolted to the mount 32.

  As described above, the lower tray 28 is fixed to the front side member inner 14 </ b> A via the bracket 26 and the mount 32 (that is, fixed to the front side member 14 side).

  A portion of the lower tray 28 near the front end portion 28A is a front inclined portion 28B that is slightly inclined toward the vehicle upper side toward the vehicle rear side. A pair of left and right bolt insertion holes 28 </ b> X and 28 </ b> Y for fastening the movable side component 24 </ b> B are formed through the front inclined portion 28 </ b> B and the top wall 28 </ b> U of the lower tray 28. A weld nut (not shown) is secured in advance to the outer peripheral portions of the bolt insertion holes 28X and 28Y on the front inclined portion 28B of the lower tray 28 and on the lower surface of the top wall portion 28U.

  A vehicle front-rear direction intermediate portion 28C that is continuous with the rear end of the front inclined portion 28B in the lower tray 28 has a top wall portion 28U that extends horizontally along the vehicle front-rear direction (see FIG. 3). In addition, a curved concave portion 28D3 that is curved in a slightly recessed manner toward the vehicle lower side continuously from the rear end of the vehicle in the vehicle front-rear direction intermediate portion 28C of the lower tray 28 and from the rear end of the top wall portion 28U is formed. The lower tray 28 includes a rear end inclined portion 28E on the vehicle rear side of the rear end of the curved recess 28D3 and the rear ends of the flange rear portions 28D1, 28D2 (see FIG. 2). The rear end inclined portion 28E is slightly inclined toward the vehicle upper side toward the vehicle rear side. A pair of left and right bolt insertion holes 28I and 28J for fastening the movable side component 24B is formed through the rear end inclined portion 28E of the lower tray 28 and the top wall portion 28U. A weld nut (not shown) is fixed in advance to the outer peripheral portion of the bolt insertion holes 28I and 28J on the rear end inclined portion 28E of the lower tray 28 and on the lower surface of the top wall portion 28U.

  The movable side component 24 </ b> B includes an upper tray 34, a load receiving member 40, a first attachment member 42, and a second attachment member 44. The upper tray 34 is arranged with the vehicle front-rear direction as a longitudinal direction in a plan view of the vehicle, is formed in a substantially reverse hat shape that opens to the vehicle upper side in a front view of the vehicle, and has a bottom wall portion 34S at an intermediate portion in the vehicle width direction. In addition, the flange portions 34F and 34G are provided on both sides in the vehicle width direction. The left and right flange portions 34F and 34G of the upper tray 34 are arranged substantially horizontally (see FIG. 3).

  As shown in FIG. 3, a first horizontal portion 35 </ b> A arranged horizontally is formed on the bottom wall portion 34 </ b> S of the upper tray 34 and on the front end portion 34 </ b> A. From the rear end of the first horizontal portion 35 </ b> A of the upper tray 34, a front curved convex portion 35 </ b> B that is curved so as to be slightly convex toward the vehicle upper side continuously to the vehicle rear side is formed. The rear end of the front curved convex portion 35B is set at a lower height position in the vehicle vertical direction than the front end of the front curved convex portion 35B. From the rear end of the front curved convex portion 35B, a front inclined portion 35C that is slightly inclined toward the vehicle upper side toward the vehicle rear side is continuously formed. The front inclined portion 35C of the upper tray 34 is overlapped with the front inclined portion 28B of the lower tray 28 and the rear portion of the top wall portion 28U (site on the vehicle rear side).

  From the rear end of the front inclined portion 35C, a second horizontal portion 35D arranged substantially horizontally toward the vehicle rear side is continuously formed. A rear curved convex portion 35E is formed from the rear end of the second horizontal portion 35D so as to be continuously convex toward the vehicle upper side and slightly convex toward the vehicle upper side. The rear curved convex portion 35E of the upper tray 34 is disposed above the curved concave portion 28D3 of the lower tray 28. From the rear end of the rear curved convex portion 35E, a rear end inclined portion 35F slightly inclined toward the vehicle upper side toward the vehicle rear side is continuously formed. The rear end inclined portion 35F of the upper tray 34 is overlapped with the rear end inclined portion 28E of the lower tray 28 and the top wall portion 28U.

  As shown in FIG. 2, a pair of left and right through holes 36 </ b> X and 36 </ b> Y are formed through the upper tray 34 from the front curved convex portion 35 </ b> B to the front portion of the front inclined portion 35 </ b> C (site on the vehicle front side). As shown in FIG. 5A including a schematic plan view of the upper tray 34, the rear portions (portions on the vehicle rear side) of the through holes 36 </ b> X and 36 </ b> Y are bolt insertions for fastening the upper tray 34 to the lower tray 28. The parts are 36X1 and 36Y1. The bolt insertion portions 36X1 and 36Y1 are set at positions corresponding to the bolt insertion holes 28X and 28Y (see FIG. 2) of the lower tray 28, and are C-shaped notches that open to the front side of the vehicle. Then, the shafts of the bolts 38A and 38B passing through the bolt insertion portions 36X1 and 36Y1 of the upper tray 34 from the upper side of the vehicle also pass through the bolt insertion holes 28X and 28Y (see FIG. 2) of the lower tray 28. And is welded to a weld nut (not shown) on the lower surface side. Accordingly, the front portion of the front inclined portion 35C of the upper tray 34 shown in FIG. 2 is bolted to the front inclined portion 28B of the lower tray 28 and the rear portion of the top wall portion 28U.

  As shown in FIG. 5 (A), the front portions (portions on the vehicle front side) of the through holes 36X, 36Y have dimensions in the vehicle width direction and in the vehicle front-rear direction rather than the diameters of the bolt insertion portions 36X1, 36Y1. The front holes 36X2 and 36Y2 are set to be long. Bolts 38A and 38B are inserted into the front holes 36X2 and 36Y2 when the upper tray 34 moves relative to the lower tray 28 toward the vehicle rear side (see FIG. 5B).

  As shown in FIG. 2, a through hole 36Z is formed through the upper tray 34 from the rear curved convex portion 35E to the middle portion in the vehicle front-rear direction of the rear end inclined portion 35F. As shown in FIG. 5A, a pair of left and right bolt insertion portions 36Z2, 36Z3 for fastening the upper tray 34 to the lower tray 28 are formed in the rear portion (the vehicle rear side portion) of the through hole 36Z. ing. The bolt insertion portions 36Z2 and 36Z3 are set at positions corresponding to the bolt insertion holes 28I and 28J (see FIG. 2) of the lower tray 28, and are C-shaped notches that open to the front side of the vehicle. Then, the shafts of the bolts 38C and 38D passing through the bolt insertion portions 36Z2 and 36Z3 of the upper tray 34 from above the vehicle also pass through the bolt insertion holes 28I and 28J (see FIG. 2) of the lower tray 28. And is welded to a weld nut (not shown) on the lower surface side. Accordingly, the vehicle front-rear direction intermediate portion of the rear end inclined portion 35F of the upper tray 34 shown in FIG. 2 is bolted to the rear end inclined portion 28E of the lower tray 28 and the vehicle front-rear direction intermediate portion of the top wall portion 28U. Yes.

  As shown in FIG. 5A, the front portion (the vehicle front side portion) of the through hole 36Z is a front hole portion 36Z1 formed continuously from both the pair of left and right bolt insertion portions 36Z2, 36Z3. ing. The front hole portion 36Z1 has a dimension in the vehicle width direction and a dimension in the vehicle front-rear direction that are longer than the diameters of the bolt insertion portions 36Z2, 36Z3. Further, the front-rear direction dimension of the front hole portion 36Z1 formed at the rear portion of the upper tray 34 is set to be equal to the front-rear direction dimension of the front hole portions 36X2, 36Y2 formed at the front portion of the upper tray 34. ing. Bolts 38C and 38D enter the front hole portion 36Z1 when the upper tray 34 moves relative to the lower tray 28 relative to the vehicle rear side (see FIG. 5B).

  As described above, the upper tray 34 is placed on the lower tray 28 and is held so as to be slidable to the vehicle rear side with respect to the lower tray 28.

  As shown in FIG. 2, a load receiving member 40 is joined to the front end 34 </ b> A of the upper tray 34 by welding. The load receiving member 40 is a bent plate arranged with the vehicle width direction as a longitudinal direction, a front plate portion 40A that covers the front end of the front end portion 34A of the upper tray 34 from the front side of the vehicle, and a front end portion 34A of the upper tray 34. An upper plate portion 40B that covers the front terminal of the vehicle from above the vehicle.

  A front surface (surface directed toward the vehicle front side) of the front plate portion 40A of the load receiving member 40 constitutes a front end surface 24M of the movable side configuration portion 24B. As shown in FIG. 3, the front end surface 28M of the lower tray 28 is set on the vehicle rear side with respect to the front end surface 24M of the movable side component 24B. Further, the front end portion 28 </ b> A of the lower tray 28 is spaced apart from the upper tray 34 on the vehicle lower side.

  As shown in FIG. 2, a first mounting member 42 having a longitudinal direction substantially in the vehicle width direction is coupled to the upper surface of the middle portion in the vehicle longitudinal direction of the pair of left and right flange portions 34F and 34G of the upper tray 34. . The first attachment member 42 is formed in a substantially hat shape opened to the vehicle lower side in a side view of the vehicle, and the joint flange portions 42A, 42B, 42C, 42D are spot welded to the flange portions 34F, 34G of the upper tray 34 ( The dots are indicated by “x” marks).

  Both ends in the longitudinal direction of the first mounting member 42 extend to both sides in the vehicle width direction with respect to the upper tray 34. Bolt insertion holes 42 </ b> X and 42 </ b> Y for fastening an inverter 50 described later are formed through both ends in the longitudinal direction of the top wall portion 42 </ b> U of the first mounting member 42. The weld nut 43 (only the weld nut on the outer periphery of the bolt insertion hole 42X in the drawing is provided on the outer periphery of the bolt insertion holes 42X and 42Y on the lower surfaces of both ends in the longitudinal direction of the top wall portion 42U of the first mounting member 42. Is attached in advance.

  A second mounting member 44 is coupled to the upper surface of the rear end portion (end portion on the vehicle rear side) of the flange portion 34F on the outer side in the vehicle width direction of the upper tray 34 and extends outward in the vehicle width direction. The second mounting member 44 is formed in a substantially hat shape that opens to the vehicle lower side in a side view of the vehicle, and a pair of front and rear joining flange portions 44A and 44B are spot welded to the flange portion 34F of the upper tray 34. (Indicated by “×”)).

  A bolt insertion hole 44 </ b> X for fastening an inverter 50 described later is formed through the end of the top wall portion 44 </ b> U of the second mounting member 44 on the outer side in the vehicle width direction. A weld nut 45 is fixed in advance to the outer peripheral portion of the bolt insertion hole 44X on the lower surface of the vehicle width direction outer end portion of the top wall portion 44U of the second mounting member 44.

  An inverter 50 is disposed on the movable side component 24B. The inverter 50 is a device that converts DC power into AC power. In the drawing, the appearance of the inverter 50 is simplified.

  A bracket 52 (only the bracket on the outer side in the vehicle width direction is shown in the drawing) is fixed to the front side portion of the inverter 50. The bracket 52 extends to the vehicle lower side and is bent so as to protrude away from the inverter 50, and a bolt insertion hole (not shown) is formed through the tip. A bolt 56A (only the bolt on the outer side in the vehicle width direction is shown in the drawing) penetrating through the bolt insertion hole of the bracket 52 from above the vehicle also passes through the bolt insertion holes 42X and 42Y of the first mounting member 42. The attachment member 42 is screwed to a weld nut 43 (only one side is shown in the drawing) on the lower surface side. Thereby, the bracket 52 fixed to the inverter 50 is bolted to the first mounting member 42 of the movable side component 24B.

  A bracket 54 is fixed to the rear end of the inverter 50 on the outer side in the vehicle width direction. The bracket 54 extends to the vehicle lower side and extends to the vicinity of the lateral side of the vehicle longitudinal direction central portion of the side portion of the inverter 50 on the outer side in the vehicle width direction. A bolt insertion hole (not shown) is formed through the tip of the bracket 54. A bolt 56B that penetrates the bolt insertion hole of the bracket 54 from above the vehicle also penetrates the bolt insertion hole 44X of the second attachment member 44 and is screwed to the weld nut 45 on the lower surface side of the second attachment member 44. . Thereby, the bracket 54 fixed to the inverter 50 is bolted to the second mounting member 44 of the movable side component 24B.

  Thus, the inverter 50 is fixed on the movable side component 24B. As shown in FIG. 3, the front surface portion 50M of the inverter 50 is disposed on the vehicle rear side with respect to the front end surface 24M of the movable side configuration portion 24B. Further, the height position of the front end upper surface portion 50 </ b> A of the inverter 50 is set on the vehicle upper side than the height position of the upper surface portion 20 </ b> U of the radiator support 20. Furthermore, the first distance L1 from the front end upper surface portion 50A of the inverter 50 to the upper surface portion 20U of the radiator support 20 and the second distance from the front end upper surface portion 50A of the inverter 50 to the front end surface 24M of the movable side component 24B in a side view of the vehicle. L2 is set to be equivalent.

  As shown in FIG. 1, the upper surface portion 20U of the radiator support 20 and the front end upper surface portion 50A of the inverter 50 are connected by a steady bracket 60 as a connecting member. The steady rest bracket 60 is formed of a high-strength pipe material, and is intermediate between a front end portion 60A fixed to the upper surface portion 20U of the radiator support 20 and a rear end portion 60C fixed to the front end upper surface portion 50A of the inverter 50. The part 60B is formed in a cylindrical shape. The intermediate portion 60B of the steady rest bracket 60 is a part that can be grasped as a rigid body. Both the front end portion 60A and the rear end portion 60C of the steady rest bracket 60 are flattened and formed. The flattened range of the steady rest bracket 60 substantially coincides with the part disposed on the upper side of the inverter 50 and the part disposed on the upper side of the radiator support 20.

  Between the flat front end portion 60 </ b> A and the cylindrical intermediate portion 60 </ b> B (boundary portion) is a cross-section changing portion 60 </ b> X in which the cross-sectional shape orthogonal to the longitudinal direction of the steady rest bracket 60 changes. In addition, between the flat rear end portion 60 </ b> C and the cylindrical intermediate portion 60 </ b> B (boundary portion) is a cross-section changing portion 60 </ b> Y in which the cross-sectional shape orthogonal to the longitudinal direction of the steady rest bracket 60 changes. The cross-section changing portions 60X and 60Y are more rigid than the flat front end portion 60A, the cylindrical intermediate portion 60B, and the flat rear end portion 60C with respect to the load from the front side of the vehicle acting on the steady rest bracket 60. Is low. In other words, the cross-section changing portions 60X and 60Y are weakened portions that become a starting point of bending deformation when a load is input to the steady rest bracket 60 from the front side of the vehicle.

  The front end portion 60A of the steady rest bracket 60 is superposed on the upper surface portion 20U of the radiator support upper 20A. A bolt insertion hole (not shown) is formed through the front end portion 60A of the steady rest bracket 60 shown in FIG. A bolt insertion hole 20X is formed through the upper wall portion 20A1 of the radiator support upper 20A so as to correspond to the bolt insertion hole of the front end portion 60A of the steady rest bracket 60. Further, a weld nut (not shown) is fixed to the outer peripheral portion of the bolt insertion hole 20X in advance on the lower surface of the upper wall portion 20A1 of the radiator support upper 20A. A shaft portion of a bolt 62 penetrating from above the vehicle through the bolt insertion hole of the front end portion 60A of the steady rest bracket 60 and the bolt insertion hole 20X of the upper wall portion 20A1 of the radiator support upper 20A is screwed into the weld nut. ing. Thereby, the front end portion 60 </ b> A of the steady rest bracket 60 is fixed to the upper surface portion 20 </ b> U of the radiator support 20.

  The rear end portion 60 </ b> C of the steady rest bracket 60 is superimposed on the seat plate 64. Further, a bolt insertion hole (not shown) is formed through the rear end portion 60 </ b> C of the steady rest bracket 60. Corresponding to the bolt insertion hole of the steady rest bracket 60, a first bolt insertion hole 64X is formed through the seat plate 64, and a first female screw portion 50X is formed at the upper front end of the inverter 50. Yes. The first female thread portion 50X of the inverter 50 has a shaft portion of a bolt 66A that penetrates the bolt insertion hole of the rear end portion 60C of the steady rest bracket 60 and the first bolt insertion hole 64X of the seat plate 64 from above the vehicle. It is screwed. Thereby, the rear end portion 60 </ b> C of the steady rest bracket 60 is fixed to the front end upper surface portion 50 </ b> A of the inverter 50.

  Further, a second bolt insertion hole (not shown) is formed through the seat plate 64 at a portion disposed on the vehicle rear side of the rear end portion 60 </ b> C of the steady rest bracket 60. Corresponding to the second bolt insertion hole of the seat plate 64, a second female screw portion 50 </ b> Y is formed on the upper front end of the inverter 50. A shaft portion of a bolt 66B passing through the second bolt insertion hole of the seat plate 64 from the vehicle upper side is screwed to the second female screw portion 50Y of the inverter 50.

  When the upper part of the radiator support 20 receives a load F from the front side of the vehicle shown in FIG. 3, the steady rest bracket 60 is a cross-sectional change set on the attachment side to the front end upper surface portion 50 </ b> A of the inverter 50 in a side view of the vehicle. The portion 60Y can be rotated about the rotation center (see the direction of arrow R).

(Operation and effect of the embodiment)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 3, the slide mechanism 24 attached to the front side member 14 is disposed on the vehicle rear side with respect to the radiator support 20, and the movable side component 24 </ b> B is slidably held on the vehicle rear side. ing. Further, the inverter 50 is fixed on the movable side component 24B, and the front surface 50M of the inverter 50 is disposed on the vehicle rear side with respect to the front end surface 24M of the movable side component 24B. For this reason, when the front end surface 24M of the movable side component 24B receives a load of a predetermined value or more from the front side of the vehicle, the inverter 50 is movable on the movable side even if the load does not directly act on the front surface 50M of the inverter 50. It slides to the vehicle rear side together with the component 24B.

  On the other hand, the upper surface portion 20U of the radiator support 20 and the front end upper surface portion 50A of the inverter 50 are connected by a steady rest bracket 60. When the upper portion of the radiator support 20 receives a load F from the front side of the vehicle, the steady rest bracket 60 rotates around the mounting side (cross-section changing portion 60Y) on the front end upper surface portion 50A of the inverter 50 in the vehicle side view. It is movable. In the inverter 50, the height position of the front end upper surface portion 50 </ b> A is set on the vehicle upper side with respect to the height position of the upper surface portion 20 </ b> U of the radiator support 20. By the way, in the case of the front collision when the height position of the collision body (barrier) 70 is higher than the bumper reinforcement (not shown), for example, when the host vehicle projects forward on the rear side of the truck, the radiator support 20 The upper part may receive a load F from the front side of the vehicle. When the upper portion of the radiator support 20 receives a load F from the front side of the vehicle at the time of a front collision, the steady rest bracket 60 is rearward with the attachment side (cross-section changing portion 60Y) to the front end upper surface portion 50A of the inverter 50 as the rotation center. By rotating and moving downward, the upper portion of the radiator support 20 is pushed down to the rear lower side. Therefore, the load at the time of collision and the deformation mode of the radiator support 20 are controlled by the steady rest bracket 60.

  Further, the inverter 50 includes a first distance L1 from the front end upper surface portion 50A to the upper surface portion 20U of the radiator support 20 and a second distance L2 from the front end upper surface portion 50A to the front end surface 24M of the movable side component 24B in a side view of the vehicle. Are set equally. Therefore, as shown in FIG. 4A, when the steady rest bracket 60 rotates and moves rearward and downward with the attachment side (cross section changing portion 60Y) to the front end upper surface portion 50A of the inverter 50 as the rotation center, the radiator support 20 The upper part of the vehicle contacts the front end surface 24M of the movable side component 24B and presses the front end surface 24M of the movable side component 24B toward the vehicle rear side.

  For this reason, the movable side component 24B tends to move to the vehicle rear side. Accordingly, as shown in FIG. 5B, the bolts 38A, 38B, 38C, and 38D are disengaged from the bolt insertion portions 36X1, 36Y1, 36Z2, and 36Z3 of the upper tray 34, and the movable side component 24B is fixed. Slide toward the rear of the vehicle with respect to 24A. As shown in FIG. 4B, the inverter 50 slides to the vehicle rear side together with the movable side component 24B. In FIG. 4B, as an example, the front ends of the front holes 36X2 and 36Y2 of the upper tray 34 shown in FIG. 5B are displaced from the bolts 38A and 38B to the vehicle rear side, and the front holes 36Z1. The front end is displaced to the vehicle rear side from the bolts 38C and 38D.

  As described above, the inverter 50 shown in FIG. 4B slides to the rear side of the vehicle together with the movable side component 24B even if the front surface 50M is not directly pressed during the front collision. In other words, the inverter 50 can be retracted while avoiding that the radiator support 20 and the arrangement in the frame directly collide with the outer wall of the inverter 50 even if the collision form at the time of the front collision varies. . Thus, in this embodiment, the robustness of the separation performance of the inverter 50 at the time of the front collision is improved.

  Further, as shown in FIG. 3, the steady rest bracket 60 is formed of a pipe material, the front end portion 60A and the rear end portion 60C are formed by flattening, and the intermediate portion 60B is formed in a cylindrical shape. Yes. For this reason, the boundary part between the flat front end part 60A and the cylindrical intermediate part 60B and the boundary part between the flat rear end part 60C and the cylindrical intermediate part 60B become the cross-section changing parts 60X and 60Y. Therefore, when the upper portion of the radiator support 20 receives a load F from the front side of the vehicle at the time of a front collision, the steady rest bracket 60 is bent and deformed with the cross-section changing portions 60X and 60Y as the weakening portions as bending start points. 60B rotates and moves rearward and downward while maintaining a cylindrical shape. For this reason, the front end surface 24M of the movable side component 24B is pressed toward the rear side of the vehicle during a frontal collision, although the configuration is simple.

  In this embodiment, the slide mechanism 24 includes a lower tray 28 and an upper tray 34. The upper tray 34 constitutes a part of the movable side component 24B and is placed on the lower tray 28. And is slidable to the rear side of the vehicle with respect to the lower tray 28. For this reason, a comparison structure in which the lower tray (28) is not provided, that is, a structure in which the inverter (50) and the movable side component (24B) are supported to the front side member (14) without using the lower tray (28). As compared with the above, the support strength of the inverter 50 and the movable side component 24B is increased. In the case of this embodiment, the upper tray 34 can slide stably on the lower tray 28 at the time of a front collision.

  In the present embodiment, the front end surface 28M of the lower tray 28 is set on the vehicle rear side with respect to the front end surface 24M of the movable side component 24B including the upper tray 34, and the front end portion 28A of the lower tray 28 is The upper tray 34 is spaced apart from the vehicle lower side. Therefore, if the upper portion of the radiator support 20 hits the front end surface 24M of the movable side component 24B at the time of a front collision, a part of the upper portion of the radiator support 20 is located in the vicinity immediately below the front end surface 24M of the movable side component 24B. However, the portion does not hit the front end face 28M of the lower tray 28. For this reason, the movable side component 24 </ b> B and the inverter 50 stably move relative to the lower tray 28 during the front collision.

  As described above, according to the vehicle front structure according to the present embodiment, it is possible to prevent or suppress the breakage of the inverter 50 at the time of a front collision.

(Supplementary explanation of the embodiment)
In the above embodiment, the power control device is the inverter 50, but the power control device may be a power control device other than the inverter.

  Further, as a modification of the above embodiment, the connecting member is, for example, a rigid connecting shaft whose rear end portion is rotatably attached to the front end upper surface portion of the power control device around an axis in the vehicle width direction. Such other connecting members may be used. Moreover, when a connection member is the said connection shaft, the front-end part may be attached to the upper surface part of a radiator support so that rotation movement is possible around the axis | shaft of a vehicle width direction.

  As a modification of the above embodiment, the lower tray may be directly fixed to the front side member. As another modification, the slide mechanism may be another slide mechanism such as a slide mechanism including a guide rail that extends in the vehicle front-rear direction in a plan view of the vehicle instead of the lower tray.

  Further, as a modification of the above-described embodiment, the upper tray may be, for example, configured as a whole slider and placed on the lower tray, and may be slidable to the vehicle rear side with respect to the lower tray. Good.

  Further, as a modification of the above embodiment, a configuration in which the front end surface of the lower tray is not set on the vehicle rear side with respect to the front end surface of the slider provided with the upper tray may be employed. Moreover, the structure which the front-end part of a lower tray is arrange | positioned in contact with the vehicle downward side with respect to an upper tray can also be taken.

  As a modification of the above embodiment, the load receiving member (40) has an upper end of the front plate portion (40A) and a front end of the upper plate portion (40B) connected by an inclined connecting portion, and the inclined connecting portion is a vehicle. A configuration in which the vehicle is inclined rearward toward the upper side may be employed. In this case, as an example, the length of the inclined connecting portion in the inclination direction is extremely shorter than the length of the front plate portion (40A) in the vehicle vertical direction and the length of the upper plate portion (40B) in the vehicle front-rear direction. The configuration to be set can be adopted.

  In addition, the said embodiment and the above-mentioned some modification can be implemented combining suitably.

  Although an example of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. .

DESCRIPTION OF SYMBOLS 10 Vehicle front part 14 Front side member 20 Radiator support 20U Upper surface part of radiator support 24 Slide mechanism 24B Movable side structure part (slider)
24M Front end face of movable side component (front end face of slider)
28 Lower tray 28A Front end of lower tray 28M Front end surface of lower tray 34 Upper tray 50 Inverter (power control device)
50A Front end top surface 50M Front surface 60 Stabilization bracket (connecting member)
60Y section change part (attachment side to the front end upper surface part of power control equipment)
F Load from the front side of the vehicle L1 First distance L2 Second distance

Claims (4)

A pair of left and right front side members disposed on both sides of the front of the vehicle with the longitudinal direction of the vehicle as a longitudinal direction;
A radiator support arranged on the front end side of the front part of the vehicle and configured in a frame shape when viewed from the front of the vehicle,
A slide mechanism provided with a slider attached to the front side member, disposed on the vehicle rear side of the radiator support, and slidably held on the vehicle rear side;
The front part is fixed on the slider and the front part is arranged on the vehicle rear side with respect to the front end surface of the slider, and the height position of the upper surface part of the front end is set on the vehicle upper side than the height position of the upper surface part of the radiator support. And a first distance from the upper surface of the front end to the upper surface of the radiator support in a side view of the vehicle and a second distance from the upper surface of the front end to the front end surface of the slider are set equal to each other. When,
The upper surface portion of the radiator support is connected to the upper surface portion of the front end of the power control device. When the upper portion of the radiator support receives a load from the front side of the vehicle, the upper surface portion of the power control device is viewed from the side of the vehicle. A connecting member capable of rotating around the mounting side of
A vehicle front structure having:   The connecting member is formed of a pipe material, and a front end portion fixed to the upper surface portion of the radiator support and a rear end portion fixed to the front end upper surface portion of the power control device are both flattened and formed. The vehicle front part structure according to claim 1, wherein an intermediate part between the front end part and the rear end part is formed in a cylindrical shape. The slide mechanism is
A lower tray fixed to the front side member;
An upper tray that constitutes part or all of the slider, is placed on the lower tray, and is slidably held to the vehicle rear side with respect to the lower tray;
The vehicle front part structure according to claim 1, comprising:   The front end surface of the lower tray is set on the vehicle rear side with respect to the front end surface of the slider having the upper tray, and the front end portion of the lower tray is separated from the upper tray toward the vehicle lower side. The vehicle front structure according to claim 3, which is arranged.

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