JP6507362B2 - Frame structure vehicle - Google Patents

Description

  The present invention relates to a frame structure vehicle configured to mount a separate body on a frame and connect the frame and the body by a plurality of sets of connection mechanisms.

  Patent Document 1 describes a connection mechanism for connecting a frame such as a suspension member to a lower surface of a vehicle body. As shown in FIG. 10, the connection mechanism 110 is composed of a bolt 113 and a nut 115, a sleeve 116 through which the bolt 113 passes, and a cylindrical elastic body 117 surrounding the sleeve 116. The sleeve 116 and the elastic member 117 of the connection mechanism 110 are vertically accommodated in the rear end portion 105 b of the suspension member 105. Further, a suspension attachment portion 104 is formed at the lower end position of the dash panel 102 of the body 100, and a bolt hole 104b through which a bolt 113 of the connection mechanism 110 passes is formed in the suspension attachment portion 104. As a result, the bolt 113 is passed from below through the sleeve 116 of the connection mechanism 110 and the bolt hole 104 b of the body 100 (suspension attachment portion 104), and the nut 115 is screwed onto the bolt 113. 105 b can be coupled to the suspension attachment portion 104 of the body 100.

  A rear hole 104 e is formed continuously on the rear side of the bolt hole 104 b in the suspension attaching portion 104 of the body 100. The diameter of the rear hole 104e is set to a size that allows the nut 115 or the like of the connection mechanism 110 to pass through. As a result, when the suspension member 105 moves rearward due to a vehicle forward collision, the nut 115 of the connection mechanism 110 moves to the position of the rear hole 104e in the suspension mounting portion 104 of the body 100 and disengages from the suspension mounting portion 104. 105 moves to the lower side of the body 100. The rearward movement of the suspension member 105 is stopped while the suspension member 105 is in contact with a cross member (not shown) provided behind the suspension attaching portion 104 of the body 100.

JP, 2009-298363, A

  That is, according to the connection structure between the body 100 and the suspension member 105 described above, at the time of a frontal collision of the vehicle, the vehicle body 100 contacts the suspension member 105 until a cross member (not shown) under the floor abuts on the suspension member 105. It will move forward by inertial force. In addition, when the body 100 moves forward and upward with respect to the suspension member 105, the suspension member 105 may enter below with respect to the cross member. For this reason, the dash panel 102 of the body 100 may collide with the engine (not shown) in the engine room E, and the dash panel 102 may be deformed so as to protrude to the inside of the compartment R.

  The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is that even if the connecting mechanism connecting the body and the frame is broken at the time of a frontal collision of the vehicle, the body has inertia. It is difficult to move forward with respect to the frame by force.

  The problems described above are solved by the inventions of the respective claims. The invention according to claim 1 is a frame structure vehicle in which a separate body is placed on a frame and the frame and the body are coupled by a plurality of sets of coupling mechanisms, and the frame is provided with the coupling mechanism. A bracket for supporting is provided, and the body is provided with a connecting portion to which the connecting mechanism is connected, and a rear wall portion disposed rearward with respect to the bracket of the frame, and the body The rear wall part is deformed by coming into contact with the bracket of the frame when the connecting part of the body is disengaged from the connecting mechanism at the time of a frontal collision of the vehicle and the body moves forward with respect to the frame by inertia force It is configured to engage with the bracket.

  According to the present invention, the rear wall portion of the body is deformed by coming into contact with the bracket of the frame when the connecting portion of the body is disengaged from the connecting mechanism at the time of a vehicle forward collision and the body moves forward with respect to the frame by inertia force. And is configured to engage with the bracket. That is, even if the connecting mechanism is broken at the time of a frontal collision of the vehicle and the connecting portion of the body is disengaged from the connecting mechanism, the rear wall of the body abuts on the bracket of the frame to deform and engage with the bracket. For this reason, it becomes difficult for the body to move forward with respect to the frame by inertial force. Therefore, the dash panel of the body does not collide with the engine in the engine room, and the deformation of the dash panel to the inside of the vehicle compartment can be prevented.

  According to the invention of claim 2, the rear wall portion of the body is provided with a portion with low strength and a portion with high strength, and the rear wall abuts against the bracket of the frame so that the strength of the rear wall is low. The part is deformed, and the high strength part is configured to engage with the bracket. That is, when the rear wall of the body abuts against the bracket of the frame, the low strength portion is surely deformed, so that the body does not slide forward with respect to the frame.

  According to the invention of claim 3, the high strength portion of the rear wall portion of the body is provided below the low strength portion of the rear wall portion at a position lower than the bracket of the frame, and the body is When the rear wall portion moves forward and upward with respect to the frame and the rear wall abuts against the bracket of the frame, the low strength portion of the wall is deformed and the high strength portion engages with the bracket from below It is configured to

  According to the invention of claim 4, the rear wall portion of the body is composed of a panel-like rocker reinforcement and a reinforcement plate superposed on the rocker reinforcement, and the portion where the reinforcement plate is superposed on the rocker reinforcement is the above-mentioned It functions as a high strength part of the back wall. That is, it is possible to easily form a low strength portion and a high strength portion in the back wall of the body.

  According to the invention of claim 5, the locker reinforcements that constitute the rear wall portion of the body are provided at the lower left and right sides of the dash panel that divides the engine room and the vehicle compartment. Here, since the dash panel is formed in a vertical wall shape extending in the vehicle width direction, the rear wall portion of the body can be easily disposed behind the bracket of the frame.

  According to the invention of claim 6, the connection mechanism is configured to bolt the connection portion of the body via the elastic members provided above and below the bracket, and the plate-like member of the bracket supporting the upper elastic member is It functions as an engaged portion for the rear wall of the body.

  According to the present invention, even when the connecting mechanism connecting the body and the frame is broken at the time of a frontal collision of the vehicle, it becomes difficult for the body to move forward with respect to the frame. Therefore, it is possible to prevent the deformation of the dash panel to the inside of the passenger compartment without the collision of the dash panel of the body with the engine in the engine room.

BRIEF DESCRIPTION OF THE DRAWINGS It is a model outline figure of the frame structure vehicle (henceforth a vehicle) which concerns on Embodiment 1 of this invention. It is a top view showing the frame structure of the said vehicle. It is a model perspective view of the bracket provided in the frame of the above-mentioned vehicles. It is the perspective view which looked at a dash panel, a floor panel, a locker reinforcement etc. which comprise the body of the above-mentioned vehicles from the vehicle interior side. It is a perspective view showing the said rocker reinforcement and a reinforcement board. It is a top view showing the said rocker reinforcement and a reinforcement board. It is a longitudinal cross-sectional view (VII-VII arrow sectional drawing of FIG. 6) showing the connection mechanism which connects the said flame | frame and a body. It is a longitudinal cross-sectional view showing the relationship of the flame | frame at the time of the front collision of a vehicle, a body, and a connection mechanism. It is the IX arrow enlarged view of FIG. It is a longitudinal cross-sectional view showing the connection structure of the flame | frame and body in the conventional vehicle.

Embodiment 1
Hereinafter, the frame structure vehicle concerning Embodiment 1 of this invention is demonstrated based on FIGS. 1-9. The frame structure vehicle which concerns on this embodiment is what is called a pickup truck (henceforth the vehicle 10), is a vehicle of the structure which mounts a separate body on a flame | frame and is connected by the connection mechanism of several sets. In addition, front and rear, right and left, and the upper and lower sides in a figure respond | correspond to front, rear, left and right, and the upper and lower sides of a vehicle.

<About the outline of the vehicle 10>
As shown in FIGS. 1 and 2, the vehicle 10 includes a frame 20 having wheels 12 mounted on the front, rear, left, and right, a body 30 mounted on the frame 20, and a loading platform 35. As shown in FIG. 2, the frame 20 is composed of side members 21 extending in the vehicle longitudinal direction on both sides in the vehicle width direction, and a cross member 23 passed between the left and right side members 21. A plurality of cross members 23 are provided at predetermined intervals in the vehicle longitudinal direction. Further, as shown in FIG. 2, brackets 25 are provided on the left and right side members 21 so as to project outward in the vehicle width direction.

<About the bracket 25 of the frame 20>
The bracket 25 of the frame 20 is a member for supporting a connecting mechanism 50 that connects the frame 20 (side member 21) and the body 30, and is provided at a plurality of places (six points on the left and right in FIG. 2) in the front-rear direction. As shown in FIG. 3, the bracket 25 is composed of a bracket main body 250 fixed to the side surface of the side member 21 by welding or the like, and a plate-like member 257 fixed upward on the tip of the bracket main body 250. ing. The bracket main body 250 has a short strip plate-like flat plate portion 251 whose tip is formed in a semicircular shape, and a rib-like rib portion 252 formed to project downward at the periphery of the flat plate portion 251. As shown in the three-dotted chain line, it is formed in an inverted U-shaped cross section. A sleeve hole 251 h through which a sleeve 53 (to be described later) of the connection mechanism 50 passes is formed at a position corresponding to the semicircular center of the tip of the flat plate portion 251 of the bracket main body 250.

  The plate-like member 257 of the bracket 25 is a member for supporting the upper elastic body 55 of the connection mechanism 50, and is formed in a flat circular plate shape in accordance with the planar shape of the upper elastic body 55. At the center of the plate member 257, a sleeve hole 257h through which a sleeve 53 (described later) of the connection mechanism 50 passes is formed. The plate-like member 257 is fixed to the upper surface of the bracket main body 250 by welding or the like so that the sleeve hole 257 h of the plate-like member 257 overlaps the sleeve hole 251 h of the bracket main body 250.

<About body 30>
As shown in FIG. 1, the body 30 is composed of an engine room 30e on the front side and a compartment 30r. Further, as shown in FIG. 2, the engine room portion 30e and the compartment portion 30r of the body 30 are partitioned by a dash panel 31 extending in the vehicle width direction (left and right direction). The body 30 is connected to the bracket 25 of the frame 20 by the connecting mechanism 50, the front left and right of the engine room 30e, the front left and right, and the rear left and right of the compartment 30r.

  Next, the configuration at the front left and right of the compartment portion 30r of the body 30 connected to the bracket 25 of the frame 20 will be specifically described based on FIG. Here, FIG. 4 is a perspective view of the inside left half of the casing 30r as viewed obliquely from the left direction, and the right half is omitted because it has the same configuration as that of the left half. The lower portion of the dash panel 31 of the body 30 is inclined so as to be low at the rear, and the rear end edge of the lower portion of the dash panel 31 is joined with the front end edge 33f of the floor panel 33 overlapped. In addition, rocker reinforcements 40 are provided on the lower sides of the left and right lower portions of the dash panel 31 and the lower left and right front portions of the floor panel 33 so as to reinforce the periphery of the portion to which the bolts 51 of the connection mechanism 50 are connected. .

<About Rocker Reinforce 40 of Body 30>
The left and right rocker reinforcements 40 of the body 30 are formed symmetrically. Therefore, representatively, the left side rocker reinforce 40 will be described, and the description of the right rocker reinforce 40 will be omitted. The rocker reinforcement 40 is formed to have a substantially constant width from the front to the center, as shown in FIGS. 5 and 6, etc., and to be gradually narrowed from the center to the rear end. There is. A connection flat plate portion 41 to which the bolt 51 of the connection mechanism 50 is connected is formed at the front of the rocker reinforcement 40, and a bolt hole 41h is provided at a central position of the connection flat plate portion 41. Further, on the rear side of the connecting flat plate portion 41 of the rocker reinforcement 40, an inclined portion 42 inclined so as to lower the rear is formed, and a rear vertical wall portion 43 is formed on the rear side of the inclined portion 42. Furthermore, a substantially horizontal bottom plate 45 is formed on the rear side of the rear vertical wall 43 of the rocker reinforcement 40, and a side wall 46 is formed on the right end of the bottom plate 45. Further, at the upper end position of the side wall portion 46, a flange portion 46f bent horizontally in the right direction is formed.

  As shown in FIG. 6, the reinforcing plate 47 is inserted from the upper side into the recess (see the cross hatch in FIG. 5) formed by the rear vertical wall 43, the bottom plate 45 and the side wall 46 of the rocker reinforcement 40. And are joined by welding or the like. The reinforcing plate 47 is formed with a vertical wall portion 473, a bottom plate portion 475, and a side wall portion 476 which are respectively superimposed on the rear vertical wall portion 43, the bottom plate portion 45 and the side wall portion 46 of the rocker reinforcement 40. Further, a short flange portion 476 f to be overlapped with the flange portion 46 f of the rocker reinforcement 40 is provided at the upper end position of the side wall portion 476 of the reinforcing plate 47. The vertical wall portion 473 of the reinforcing plate 47 is configured to cover about the lower half of the rear vertical wall portion 43 of the rocker reinforcement 40 as shown in FIGS. 5 and 7. An edge portion 473 e is formed at the upper end. For this reason, the rear vertical wall 43 of the rocker reinforcement 40 is relatively low in strength at the upper part where the vertical wall 473 of the reinforcing plate 47 is not overlapped, and is lower at the lower part where the vertical wall 473 of the reinforcing plate 47 is overlapped. Relatively high strength. That is, a high strength portion is provided below the low strength portion of the rear longitudinal wall portion 43 of the locker reinforcement 40.

  As shown in FIG. 7, the bolt connecting portion 31x of the dash panel 31 of the body 30 is fitted with a bolt hole (not shown) in the connecting flat plate portion 41 of the rocker reinforcement 40 to which the bolt 51 of the connecting mechanism 50 is connected. It is piled up in the state and fixed by welding etc. Further, the dash panel 31 is formed with a work opening 31 b for tightening the bolt 51 of the connection mechanism 50. That is, a portion where the bolt connection portion 31x of the dash panel 31 and the connection flat portion 41 of the rocker reinforcement 40 in the body 30 overlap corresponds to the connection portion of the body in the present invention.

<About the connection mechanism 50>
The connection mechanism 50 is a mechanism for connecting the bracket 25 of the frame 20 and the connection portion (bolt connection portion 31x, connection flat portion 41) of the body 30 as shown in FIG. 7 and the like. The connection mechanism 50 includes a bolt 51, a nut 52, and a sleeve 53 through which the bolt 51 passes. Furthermore, the connection mechanism 50 includes a substantially cylindrical small diameter lower elastic body 54 and a large diameter upper elastic body 55. Further, through holes 54 k and 55 k through which the sleeve 53 is passed are formed coaxially between the lower elastic body 54 and the upper elastic body 55. The connection mechanism 50 further includes a lower flange 57 that presses the end surface of the sleeve 53 and an end surface of the lower elastic body 54 from the lower side, and an upper flange 58 that presses the end surface of the sleeve 53 and the end surface of the upper elastic body 55 from the upper side. And have. The lower flange 57 is fixed to the lower end surface of the lower elastic body 54 in advance.

  The sleeve 53 of the connection mechanism 50 is, as shown in FIG. 7, the bracket 25 of the frame 20 from below (bracket main body 250, the plate-like member 257, with the lower half passing through the through hole 54k of the lower elastic body 54 ) Through the sleeve holes 251h and 257h. Thus, the lower elastic body 54 is accommodated below the bracket body 250 of the bracket 25. Next, with the upper flange 58 set on the upper surface of the upper elastic body 55, the upper half of the sleeve 53 is passed through the through hole 55k of the upper elastic body 55. Thus, the upper elastic body 55 is positioned on the upper side of the plate-like member 257 while being accommodated in the plate-like member 257.

  In this state, the connecting portion of the body 30, that is, the connecting flat plate portion 41 of the rocker reinforcement 40 of the body 30 is set on the upper flange 58 of the connecting mechanism 50. Then, the bolt 51 is passed from above through the bolt hole 41 h of the connection portion of the body 30, the bolt hole of the upper flange 58 of the connection mechanism 50, the sleeve 53 and the bolt hole of the lower flange 57. The nut 52 is screwed onto the Thereby, the bracket 25 of the frame 20 and the connecting portion of the body 30 are connected. In this state, as shown in FIG. 7, the rear vertical wall 43 of the rocker reinforcement 40 of the body 30 is disposed behind the bracket 25 of the frame 20. That is, the rear vertical wall 43 of the rocker reinforcement 40 of the body 30 corresponds to the rear wall of the body in the present invention.

<About the operation at the time of a frontal collision of the vehicle 10>
Next, an operation when the vehicle 10 makes a frontal collision will be described. When the head of the bolt 51 of the connection mechanism 50 breaks due to an impact when the vehicle 10 makes a frontal collision, as shown in FIG. 8, the body 30 is moved forward and upward with respect to the frame 20 (side member 21) by inertia force. Moving. Thereby, the rear vertical wall 43 of the rocker reinforcement 40 of the body 30 collides with the bracket 25 of the frame 20 supporting the connecting mechanism 50 from the rear. As a result, the upper portion of the rear vertical wall 43 of the relatively low strength body 30 (rocker reinforcement 40) is pressed by the plate-like member 257 of the bracket 25 and deformed so as to project rearward. On the other hand, the lower portion (portion overlapping the reinforcing plate 47) of the rear longitudinal wall portion 43 of the relatively high strength rocker reinforcer 40 is in contact with the lower side surface of the plate-like member 257 of the bracket 25 as it is. Thereby, as shown in FIG. 9, the edge portion 473 e of the vertical wall portion 473 of the reinforcing plate 47 is deformed with respect to the peripheral edge of the plate-like member 257 of the bracket 25 via the rear vertical wall portion 43 of the rocker reinforcement 40. Will be engaged from Thus, the forward and upward movement of the body 30 with respect to the frame 20 (side member 21) is stopped.

<About the merits of the vehicle 10 according to the present embodiment>
According to the vehicle 10 relating to the present embodiment, the rear vertical wall 43 (rear wall) of the rocker reinforcement 40 of the body 30 causes the body 30 to be disengaged from the connection mechanism 50 at the time of a vehicle forward collision, and the body 30 is forward with inertia force. When moving, it abuts against and deforms the bracket 25 of the frame 20 and engages with the bracket 25. That is, even if the connecting mechanism 50 is broken at the time of a vehicle forward collision and the connecting portion of the body 30 is disengaged from the connecting mechanism 50, the rear vertical wall 43 (rear wall) of the rocker reinforcement 40 of the body 30 is the frame 20 It abuts against the bracket 25, deforms, and engages with the bracket 25. Therefore, it becomes difficult for the body 30 to move forward with respect to the frame 20 by inertial force. As a result, the dash panel 31 of the body 30 does not collide with the engine (not shown) in the engine room E, and the deformation of the dash panel 31 to the inside of the passenger compartment R can be prevented.

  In addition, when the rear vertical wall 43 (rear wall) of the rocker reinforcement 40 of the body 30 abuts against the bracket 25 of the frame 20, the portion with low strength is surely deformed. There is no such thing as slipping. Furthermore, a portion where the reinforcing plate 47 is overlapped with the rocker reinforcement 40 functions as a portion with high strength in the rear vertical wall 43 (rear wall) of the body 30. For this reason, it is possible to easily form a portion with low strength and a portion with high strength in the rear vertical wall 43 (rear wall) of the body 30.

<Modification example>
Here, the present invention is not limited to the above embodiment, and changes can be made without departing from the scope of the present invention. For example, in the present embodiment, the rear longitudinal wall portion 43 of the rocker reinforcement 40 of the body 30 is engaged with the plate-like member 257 of the bracket 25 of the frame 20 to stop the forward movement of the body 30 at the time of a vehicle forward collision. An example is shown. However, a hook-like projection may be provided on the bracket 25 of the frame 20, and the rear longitudinal wall 43 of the rocker reinforcement 40 of the body 30 may be engaged with the projection. Moreover, in this embodiment, the example which superimposes and fixes the reinforcement board 47 on the inner side (upper side) of the rear vertical wall part 43 in the rocker reinforcement 40 of the body 30 was shown. However, a structure is also possible in which a reinforcing plate 47 is stacked and fixed on the outer side (lower side) of the rear vertical wall portion 43 of the rocker reinforcement 40. Moreover, although the example which connects the body 30 with 6 sets of connection mechanisms 50 with respect to the flame | frame 20 was shown in this embodiment, the number of connection mechanisms 50 can be changed suitably.

20: Frame 25: Bracket 250: Bracket body 257: Dish member 30: Body 31: Dash panel 31x: Bolt Connection part (connection part of body)
40 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 45
43 · · · Rear vertical wall (rear wall of the body)
47 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ... Elastic member)
55 ··· Upper elastic body (upper elastic member)

Claims (6)

A frame structure vehicle, comprising: a separate body mounted on a frame; and the frame and the body being coupled by a plurality of sets of coupling mechanisms,
The frame is provided with a bracket for supporting the connection mechanism,
The body is provided with a connecting portion to which the connecting mechanism is connected, and a rear wall portion which is disposed rearward with respect to the bracket of the frame;
The rear wall portion of the body is deformed by coming into contact with the bracket of the frame when the connecting portion of the body is disengaged from the connecting mechanism at the time of a vehicle forward collision and the body moves forward with respect to the frame by inertia force. And a frame structure vehicle configured to engage with its bracket. A frame structure vehicle according to claim 1, wherein
The rear wall of the body is provided with a portion with low strength and a portion with high strength, and when the rear wall abuts against the bracket of the frame, the low strength portion of the wall is deformed thereafter, A frame structure vehicle, wherein the high part of the frame is configured to engage with the bracket. A frame structure vehicle according to claim 2, wherein
The high strength portion of the rear wall portion of the body is provided below the low strength portion of the rear wall portion at a position lower than the bracket of the frame, and the body is front upper above the frame When the rear wall abuts against the bracket of the frame, the low strength portion of the wall is deformed and the high strength portion is engaged with the bracket from below. Frame structure vehicle. A frame structure vehicle according to any one of claims 2 and 3.
The rear wall of the body is composed of a panel-like rocker reinforcement and a reinforcing plate stacked on the rocker reinforcement,
The frame structure vehicle in which a portion where a reinforcing plate is stacked on the rocker reinforcement functions as a portion with high strength of the rear wall portion. A frame structure vehicle according to claim 4 , wherein
The rocker reinforcement that constitutes the rear wall portion of the body is a frame structure vehicle provided on both left and right lower portions of a dash panel that divides an engine room and a vehicle compartment. A frame structure vehicle according to any one of claims 1 to 5, wherein
The connection mechanism is configured to bolt the connection portion of the body via elastic members provided above and below the bracket,
The frame structure vehicle in which the plate-like member of the said bracket which supports the said upper elastic member functions as a to-be-engaged part with respect to the rear wall part of the said body.

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