JP4596315B2 - Car body rear structure - Google Patents

Description

  The present invention relates to a vehicle body rear portion structure of a vehicle, and more particularly to a technique for preventing a jack housed in a vehicle body rear portion from being scattered in a passenger compartment at the time of a rear collision of the vehicle.

  Generally, a vehicle is equipped with a jack that is used when changing tires. Normally, a jack is provided with a mounting area on a floor panel at the rear of the vehicle body, and is mounted here. On the other hand, the floor panel at the rear of the vehicle body is often used as a spare tire storage space, and the jack mounting location must be set in consideration of the spare tire storage. Examples of the jack mounting location on the floor panel at the rear of the vehicle body include the space at the front, rear, side, or rear of the rear wheel house. Here, the width of the floor panel at the rear of the vehicle body is generally larger than the longitudinal length. Therefore, when a jack is mounted in front of or behind the spare tire, there is a problem that it is difficult to secure a space for the mounting position. When the jack is mounted in front of the spare tire, there is a problem that it takes time to take out the jack, and it is hardly adopted.

  In addition, the space behind the rear wheel house has room in the vertical direction, but the space in the front, rear, left and right is small. Therefore, it is necessary to mount the jack in an inverted state. However, when a trunk room or the like is formed above the floor panel, the end of the trunk room in the vehicle width direction needs to be a storage space for the upper end of the jack, and a sufficient space for storing a long item such as a golf bag must be secured. Can not be. In view of the layout, as described in Patent Document 1, it is desirable that the jack be mounted on the side of the spare tire with the longitudinal direction of the jack as the longitudinal direction of the vehicle body.

JP 2001-253303 A

  Here, the rear part of the vehicle body may be deformed at the time of a rear collision of the vehicle, and a load mounted on the rear part of the vehicle body may be scattered into the passenger compartment due to the impact of the rear collision. When a jack is mounted on the rear part of the vehicle body, the jack may be scattered into the cabin. In particular, when a method of mounting a jack on the side of a spare tire is adopted, there are things that prevent the jack from scattering forward of the vehicle body compared to the case of mounting in the space behind the spare tire or the rear wheel house. There are few, and there is a tendency for jacks to be easily scattered in the cabin. In order to solve this, a method of fixing the jack firmly is conceivable. However, in this case, it takes time to remove the jack, and the workability of taking in and out the jack is inferior.

  Accordingly, an object of the present invention is to provide a vehicle body rear part structure that can prevent the jack mounted on the rear part of the vehicle body from splashing into the passenger compartment at the time of rear collision of the vehicle while ensuring the workability of inserting and removing the jack. .

According to the first aspect of the present invention, the jack support portion that supports the jack on the floor panel at the rear of the vehicle body so that the longitudinal direction thereof faces the vehicle longitudinal direction, and the tire support portion that supports the spare tire on the floor panel. The jack support portion is disposed so as to support the jack between the spare tire supported by the tire support portion and a side wall of the vehicle body, and the tire support portion. Between the spare tire supported on the side wall and the side wall, the jack is disposed on the floor panel so as to be separated from the jack support portion in front of the vehicle body, and the jack is restricted from moving forward in the vehicle body at the time of a rear collision. comprising a restricting member for said regulating member, by the jack support portion, said jack in a state where its longitudinal direction is supported so as to face the longitudinal direction of the vehicle body Rear body structure and having a portion covering from above apart the front end from the front end portion is provided.
Further, according to the second aspect of the present invention, in the vehicle body rear portion structure including the jack support portion that supports the jack on the floor panel of the rear portion of the vehicle body so that the longitudinal direction thereof faces the vehicle longitudinal direction, the jack support portion is more than the jack support portion. A restricting member that is disposed on the floor panel in front of the vehicle body and restricts the jack from moving to the upper front side of the vehicle body at the time of a rear collision; and disposed on the floor panel in front of the vehicle body than the jack support portion; A cross member extending in the vehicle width direction, and the restricting member is disposed from the cross member toward the rear of the vehicle body, and the jack moves forward of the vehicle body at the time of a rear collision. A vertical wall portion having a height that restricts this and having a facing portion facing the front end of the jack, and the restricting member moves forward of the vehicle body at the time of a rear collision Rear body structure characterized in that it has a shape for guiding the front end of the serial jack to the facing portion is provided.

According to the first and second aspects of the present invention, it is possible to prevent the jack mounted on the rear part of the vehicle body from scattering into the passenger compartment at the time of the rear collision of the vehicle while ensuring the workability of inserting and removing the jack. In addition, according to the first aspect of the present invention, it is more reliably restricted that the jack moves to the front upper side of the vehicle body, and the jack can be more effectively prevented from scattering into the passenger compartment. Further, according to the second aspect of the present invention, the jack collides with the vertical wall portion by the guide of the restricting member, and the vertical wall portion serves as a deterrent wall, thereby preventing the jack from scattering into the cabin more effectively. Further, since the impact load in the longitudinal direction of the vehicle body of the jack is borne by the cross member, the rigidity of the regulating member in the longitudinal direction of the vehicle body can be reduced, and the size and weight can be reduced.

  FIG. 1 is a view showing a structure around a luggage compartment space at the rear of a vehicle body of an automobile A employing a vehicle body rear structure according to an embodiment of the present invention. The cargo space is formed on the floor panel 10 at the rear of the vehicle body, and the board 1 indicated by a broken line serves as a partition floor, and is partitioned into an upper cargo space and a lower cargo space. Spare tires T and jacks J are accommodated in the lower cargo space. The spare tire T is supported on the floor panel 10 by a tire support portion 11 provided on the floor panel 10. Further, the jack J is supported by a jack support portion 12 provided on the floor panel 10. A cross member 13 extending in the vehicle width direction is disposed on the floor panel 10 in front of the jack J. Both ends of the cross member 13 are coupled to the side wall 2 of the automobile A, respectively. A regulating member 14 is disposed on the floor panel 10 in front of the vehicle body with respect to the jack support portion 12. In the case of this embodiment, the board 1 is provided so as to cover the cross member 13, the regulating member 14, the jack J, and the spare tire T from above.

  With reference to FIG.2 and FIG.3, the vehicle body rear part structure of the motor vehicle A is further demonstrated. 2 and 3 are plan views showing the peripheral structure of the floor panel 10. FIG. 2 shows a state where the spare tire T and the jack J are removed, and FIG. 3 shows a state where the spare tire T and the jack J are attached.

  The floor panel 10 is coupled to the upper surfaces of the pair of left and right rear side frames 3, and is supported on the rear side frame 3 between the pair of left and right rear side frames 3. The floor panel 10 has a circular recess 10 a in which a spare tire T can be stored in a space between the pair of rear side frames 3. Note that a rear end panel (not shown) or the like is coupled to the rear end of the floor panel 10 in the longitudinal direction of the vehicle body.

  A tire support 11 is provided at the center of the recess 10a. FIG. 4B is a perspective view showing the configuration of the tire support portion 11. The tire support portion 11 is erected on the attachment plate 111 and the attachment plate 111, and a shaft 112 having a male screw engraved on the upper end portion 112a, and a female screw that engages with a screw of the upper end portion 112a of the shaft 112 are engraved. And a handle 113 having a hole 113a, which is fixed on the recess 10a of the floor panel 10 by a mounting plate 111. By inserting a hole at the center of the spare tire T into the shaft 112 and screwing the hole 113a of the handle 113 into the upper end portion 112a of the shaft 112, the spare tire T is fixed and supported on the tire support portion 11.

  The jack support portion 12 supports the jack J on the floor panel 10 so that the longitudinal direction thereof faces the vehicle body longitudinal direction. FIG. 4A is a perspective view showing the configuration of the jack support 12. The jack support 12 includes a mounting plate 121 and is fixed on the floor panel 10 by the mounting plate 121. The mounting plate 121 includes a claw portion 121a to which the jack J is locked. The claw portion 121a has an inverted L shape and forms a U-shaped gap with the flat portion of the mounting plate 121. The leg portion Ja (see FIG. 2) of the jack J is inserted into the gap, and the movement of the jack J in the longitudinal direction and the vertical direction of the vehicle body is restricted. A shaft 121b having a male screw carved at the upper end is erected on the flat portion of the mounting plate 121. The shaft body 121b is inserted into a mounting hole Jb (see FIG. 2) provided in a support portion of the jack J that supports a side sill of the vehicle body.

  The jack support portion 12 further includes a cylindrical body 122 having a hole in which a female screw threadedly engaged with a male screw at an upper end portion of the shaft body 121b and a handle inserted into a hole 122a penetrating in the radial direction of the cylindrical body 122. 123. Thus, after the leg portion Ja of the jack J is locked to the claw portion 121a and the shaft body 121b is inserted into the mounting hole Jb of the jack J, the cylindrical body 122 is screwed into the upper end portion of the shaft body 121b. At this time, the handle 123 can be easily screwed by inserting the handle 123 into the hole 122 a of the cylinder 122 and rotating the cylinder 122. When the screwing is completed, the jack J is locked by the claw portion 121a and the shaft body 121b, and the jack J is fixed and supported by the jack support portion 12. In this case, the jack J may come off the jack support portion 12 and scatter into the passenger compartment at the time of a rear collision. However, as will be described later, in the present embodiment, the jack support portion 12 has a structure that prevents this scattering. It is not necessary to firmly fix J, and a simple one is sufficient as illustrated in FIG. Therefore, the workability of inserting and removing the jack J is not different from the conventional one, and the workability can be secured.

  Here, as shown in FIG. 2, the jack support portion 12 is disposed on the side wall 2 (not shown in FIG. 2) side of the vehicle body from the center in the vehicle width direction. The rear portion of the vehicle body has higher rigidity in the front-rear direction than the central portion in the vehicle width direction as much as the side wall 2 is present, and there is less deformation at the time of rear collision. Is mounted closer to the side wall 2 of the vehicle body, the impact input to the jack J at the time of a rear collision is reduced than when it is mounted in the center in the vehicle width direction. Accordingly, it is possible to more effectively prevent the jack J from scattering into the passenger compartment.

  Further, as shown in FIG. 2, in the present embodiment, the jack support portion 12 is disposed on the rear side frame 3. The rear side frame 3 is a member that increases the rigidity in the front-rear direction of the vehicle body. For this reason, the jack support portion 12 is disposed on the rear side frame 3, so that an impact input to the jack J at the time of a rear collision is reduced, and the scattering of the jack J into the cabin can be more effectively prevented.

  Further, as shown in FIG. 3, in the present embodiment, the jack support portion 12 supports the jack J between the spare tire T supported by the tire support portion 11 and the side wall 2 (not shown in FIG. 3) of the vehicle body. And the rear end of the jack J is disposed in front of the vehicle body with respect to the rear end edge (line L) of the wheel W of the spare tire T supported by the tire support 11. . According to this configuration, since the obstacle that has collided with the vehicle hits the wheel W of the spare tire T before the jack J, the impact is dispersed. Therefore, the impact input to the jack J at the time of a rear collision is reduced, and scattering of the jack J into the cabin can be more effectively prevented.

  Next, the configuration of the cross member 13 and the regulating member 14 will be described. First, the cross member 13 will be described. The cross member 13 is a reinforcing member that reinforces the rigidity in the vehicle width direction of the rear portion of the vehicle body of the automobile A. In the present embodiment, the cross member 13 is provided on the floor panel 10 in front of the vehicle body rather than the jack support portion 12, thereby It is intended to prevent scattering into the room. FIG. 5A is a perspective view showing the peripheral structure of the cross member 13 and the regulating member 14, and FIG. 5B is a cross-sectional view taken along the line II in FIG. 5A.

  The cross member 13 has a substantially U-shaped cross section and protrudes upward from the upper surface of the floor panel 10, and forms a closed cross section together with the floor panel 10. The cross member 13 has a vertical wall portion 13a on the rear side of the vehicle body that has a height that restricts the jack J from moving forward of the vehicle body at the time of a rear collision. The vertical wall portion 13a has a facing portion 13a 'that faces the front end of the jack J in the longitudinal direction of the vehicle body. As shown by a broken line in FIG. 5B, the jack J is supported by the jack support 12 with the front end of the jack J in the longitudinal direction of the vehicle facing the facing portion 13a '.

  When a rear collision occurs in the automobile A, if the impact is strong, the jack J comes off the jack support portion 12 and jumps out to the front of the vehicle body. However, the jack J that jumps out collides with the facing portion 13a '. For this reason, the vertical wall part 13a becomes a deterrent wall, and the movement of the jack J is controlled. Therefore, it is possible to prevent the jack J from being scattered into the cabin. The vertical wall portion 13 a is a part of the cross member 13 that is a vehicle body structural member extending in the vehicle width direction, and the cross member 13 is disposed relatively firmly on the floor panel 10. By using such a cross member 13 as a deterrent wall, the movement of the jack J to the front of the vehicle body can be restricted without an increase in the number of parts or a separate reinforcement structure. In the present embodiment, the cross member 13 is bent in a plan view so that a central portion thereof protrudes toward the front side of the vehicle body, and both end portions are relatively positioned on the rear side of the vehicle body. For this reason, the jack J is supported near the rear of the vehicle body, and the jack J can be easily taken out from the rear of the vehicle body. Nevertheless, since the front end of the jack J is close to the vertical wall portion 13a, the restriction timing of the movement of the jack J toward the front of the vehicle body is advanced, and scattering into the passenger compartment can be prevented.

  Next, the regulating member 14 will be described. The restricting member 14 is disposed in front of the vehicle body with respect to the jack support portion 12 and restricts the jack J from moving to the upper front side of the vehicle body at the time of a rear collision. In the case of the present embodiment, the regulating member 14 has a U-shaped cross section from the upper plate portion 14a and the left and right side plate portions 14b. The front end portion of the restricting member 14 is fixed to the cross member 13, and the rear end portion opens toward the jack J, and is disposed from the cross member 13 toward the rear of the vehicle body.

  If the jack J is disengaged from the jack support portion 12 due to the impact at the time of the rear impact of the vehicle and tries to move to the front of the vehicle body, it is restricted from moving to the front upper side of the vehicle body due to the presence of the upper plate portion 14a of the restriction member 14. Therefore, it is possible to prevent the jack J from being scattered into the cabin. Further, since the regulation member 14 of the present embodiment is provided with the side plate portion 14b, it is possible to reliably prevent the jack J from splashing into the passenger compartment even when the jack J jumps diagonally forward at the time of a rear collision. Further, the front end portion of the regulating member 14 of the present embodiment is fixed to the cross member 13. Therefore, in the configuration of the present embodiment, the regulating member 14 not only regulates the movement of the jack J to the upper front side of the vehicle body, but also plays a role of guiding the jack J to the vertical wall portion 13a. Therefore, the jack J can be more effectively prevented from scattering into the passenger compartment. In addition, it is possible to load the cross member 13 with a load in front of the vehicle body with respect to the restriction member 14 received from the jack J at the time of a rear collision, and improve the strength of the restriction member 14 in the longitudinal direction of the vehicle body against the collision of the jack J. be able to. Therefore, the movement of the jack J to the upper front side of the vehicle body at the time of a rear collision can be more reliably regulated by the regulating member 14, and the jack J can be more effectively prevented from scattering into the cabin.

  Next, in the case of the present embodiment, as shown in FIG. 5B, the upper plate portion 14a is inclined so as to descend toward the front of the vehicle body, and the front end of the jack J that moves forward in the vehicle body at the time of a rear collision. The slope part which guides a part to a vehicle body front lower side is comprised. According to this configuration, the restriction member 14 guides the movement of the jack J to the lower front side of the vehicle body and restricts the movement to the upper front side of the vehicle body. Therefore, it is possible to more effectively prevent the jack from scattering into the cabin. Further, the upper plate portion 14a is inclined so as to descend toward the front of the vehicle body, so that the regulating member 14 forms a shape that guides the front end portion of the jack J that moves to the front of the vehicle body at the time of a rear collision to the facing portion 13a ′. ing. For this reason, the jack J collides with the vertical wall portion 13a by the guide of the regulating member 14, and the vertical wall portion 13a serves as a deterrent wall, and the scattering of the jack J into the cabin is more effectively prevented. Further, since the impact load in the longitudinal direction of the vehicle body of the jack J is borne by the cross member 13, the rigidity of the regulating member 14 in the longitudinal direction of the vehicle body can be reduced, and the size and weight can be reduced.

  When the upper plate portion 14a is inclined in this way, the height of the rear end of the upper plate portion 14a is higher than that of the cross member 13 as shown in FIG. Since the board 1 (see FIG. 1) is placed on the cross member 13, it is desirable that the height of the rear end of the upper plate portion 14a be equal to or less than the height of the cross member 13. Therefore, as shown in FIG. 5C, it is desirable to provide a step in the front end portion of the upper plate portion 14a so that the front end portion of the slope is lowered. By doing so, the height of the rear end of the upper plate portion 14a can be made equal to or less than the height of the cross member 13, as shown in FIG. It can be flatly supported on the cross member 13 without interfering with it, and the movement of the jack J to the upper front side of the vehicle body at the time of the rear collision can be restricted by the restricting member 14.

  Next, in the present embodiment, as shown in FIG. 5B, the upper plate portion 14a has a portion that covers the front end portion of the jack J supported by the jack support portion 12 from above. For this reason, it is possible to more effectively prevent the jack J from being scattered into the passenger compartment by more reliably restricting the jack J from moving to the upper front side of the vehicle body. Here, when the jack J is attached to the jack support 12, the front end of the jack J is inserted into the regulating member 14 from the right rear side of the vehicle body, and the jack J is rotated clockwise in plan view with the front end as a center. The leg portion Ja of the jack J is locked to the claw portion 121a, and the shaft body 121b is inserted into the mounting hole Jb. Thereafter, the cylindrical body 122 is screwed to the upper end portion of the shaft body 121b using the handle 123.

  Conversely, when the jack J is removed from the jack support 12, this operation is reversed. When removing the cylindrical body 122 from the shaft body 121b, the rear side of the jack J is lifted to remove the mounting hole Jb from the shaft body 121b, and the front end portion inserted into the regulating member 14 is viewed in plan view. It can be rotated counterclockwise and pulled out to the rear upper side of the vehicle body. For this reason, even if the restricting member 14 has a portion that covers the front end of the jack J from above, the jack J can be removed from the jack support portion 12 by pulling the jack J to the rear upper side of the vehicle body, so that the workability of inserting and removing the jack J is ensured. Is done.

  Next, in the present embodiment, the above configuration can sufficiently prevent the jack J from scattering into the passenger compartment. However, when the impact at the time of the rear impact is extremely strong, the jack J is attached to the vertical wall portion 13a. It is also conceivable that after the collision, the vehicle rolls over the vertical wall portion 13a and moves forward of the vehicle body. In view of this, it is possible to provide a locking portion for locking the jack J that has collided with the vertical wall portion 13a to the vertical wall portion 13a as it is.

  6A is a perspective view showing the peripheral structure of the cross member 13 and the regulating member 14 provided with an opening 131 as a locking portion, and FIG. 6B is a cross section taken along line II-II in FIG. 6A. FIG. The opening 131 is provided in the facing portion 13a '. When the jack J moves to the front of the vehicle body at the time of a rear collision, the front end portion enters the opening 131 and is locked in the fitted state. Therefore, it is possible to prevent the jack J from rolling and moving over the vertical wall portion 13a and moving forward. In the present embodiment, the upper end portion 14a of the restriction member 14 is inclined so as to descend toward the front of the vehicle body, whereby the restriction member 14 opens the front end portion of the jack J that moves forward of the vehicle body at the time of a rear collision. It has a shape to guide to. For this reason, since the front end part of the jack J is guided to the opening part 131 by the control member 14, the jack J can be more reliably latched to the vertical wall part 13a.

  6C is a perspective view showing the peripheral structure of the cross member 13 and the regulating member 14 provided with the inclined portion 132 as a locking portion, and FIG. 6D is a cross section taken along line III-III in FIG. 6C. FIG. The inclined portion 132 is formed by bending the facing portion 13a 'and is inclined so as to descend toward the front of the vehicle body. When the jack J moves forward in the rear impact, the front end of the jack J is guided by the inclined portion 132 so that the jack J moves under the vertical wall portion 13a, and the vertical wall portion 13a is deformed by the deformation of the vertical wall portion 13a. It is locked to. Therefore, it is possible to prevent the jack J from rolling and moving over the vertical wall portion 13a and moving forward. As described above, in the present embodiment, the upper end portion 14a of the restriction member 14 is inclined so as to be lowered toward the front of the vehicle body, so that the restriction member 14 moves to the front of the vehicle body at the time of a rear collision. Is guided to the inclined portion 132. For this reason, since the front-end part of the jack J is guided to the inclination part 132 by the control member 14, the jack J can be more reliably latched to the vertical wall part 13a. Further, since the closed cross section of the cross member 13 is not impaired, the rigidity can be increased as compared with the case where the opening 131 is provided.

  In the present embodiment, the combination of the restriction member 14 and the cross member 13 prevents the jack J from scattering into the passenger compartment. However, even with the restriction member 14 alone, the jack J moves to the upper front side of the vehicle body. Can be prevented, and scattering into the cabin can be prevented. FIG. 7A is a perspective view of the regulating member 14 showing the configuration in the case of the regulating member 14 alone, and FIG. 7B is a cross-sectional view taken along line IV-IV in FIG.

  In the example of the figure, the regulating member 14 is formed in a U-shaped cross section from an upper plate portion 14 a and left and right side plate portions 14 b, and the front end portion thereof is fixed to the cross member 13. Instead, it is closed, and as a whole, it has a bag shape in which the rear end portion opens toward the jack J.

  Also in the case of this example, if the jack J tries to move forward from the jack support portion 12 due to the impact at the time of the rear collision of the vehicle, it moves to the upper front side of the vehicle body due to the presence of the upper plate portion 14a of the regulating member 14. Is regulated. And since the front-end part of the control member 14 is closed, the jack J collides with this and the movement to the front is suppressed. Therefore, it is possible to prevent the jack J from being scattered into the cabin.

It is a figure which shows the structure of the cargo compartment space periphery of the vehicle body rear part of the motor vehicle A which employ | adopted the vehicle body rear part structure which concerns on one Embodiment of this invention. 3 is a plan view showing a peripheral structure of the floor panel 10. FIG. 3 is a plan view showing a peripheral structure of the floor panel 10. FIG. FIG. 2A is a perspective view showing the configuration of the jack support portion 12, and FIG. 2B is a perspective view showing the configuration of the tire support portion 11. (A) is a perspective view which shows the periphery structure of the cross member 13 and the control member 14, (b) is sectional drawing in alignment with line II of FIG. 5 (a), (c) is another example of the control member 14. It is sectional drawing. (A) is a perspective view which shows the periphery structure of the cross member 13 which provided the opening part 131 as a latching | locking part, and the control member 14, (b) is sectional drawing in alignment with line II-II of Fig.6 (a), (c) ) Is a perspective view showing a peripheral structure of the cross member 13 and the regulating member 14 provided with an inclined portion 132 as a locking portion, and FIG. 6D is a cross-sectional view taken along line III-III in FIG. (A) is a perspective view of the regulating member 14 showing the configuration in the case of the regulating member 14 alone, and (b) is a sectional view taken along line IV-IV in FIG. 7 (a).

Explanation of symbols

A Automobile T Spare tire J Jack 1 Board 2 Side wall 10 Floor panel 11 Tire support part 12 Jack support part 13 Cross member 13a Vertical wall part 13a 'Face part 14 Control member

Claims (8)

In a vehicle body rear structure comprising a jack support portion that supports a jack on a floor panel at the rear of the vehicle body such that the longitudinal direction thereof faces the vehicle longitudinal direction, and a tire support portion that supports a spare tire on the floor panel ,
The jack support portion is disposed so as to support the jack between the spare tire supported by the tire support portion and a side wall of a vehicle body,
Between the spare tire supported by the tire support portion and the side wall, the jack is disposed on the floor panel away from the jack support portion on the front side of the vehicle body. Provided with a regulating member that regulates ,
The restricting member has a portion that covers the front end portion of the jack in a state of being supported by the jack support portion so that the longitudinal direction thereof is directed in the longitudinal direction of the vehicle body from the front end portion. Car body rear structure. In the vehicle body rear structure having a jack support portion that supports the jack on the floor panel at the rear of the vehicle body so that the longitudinal direction thereof faces the vehicle longitudinal direction,
A restricting member that is disposed on the floor panel in front of the vehicle body relative to the jack support portion and restricts the jack from moving to the upper front side of the vehicle body at the time of a rear collision ;
A cross member disposed on the floor panel in front of the jack support portion and extending in the vehicle width direction ,
The restriction member is disposed from the cross member toward the rear of the vehicle body,
The cross member includes a vertical wall portion having a height that restricts the jack from moving forward of the vehicle body at the time of a rear collision and having a facing portion facing the front end of the jack,
The said vehicle body rear part structure characterized by the said control member having a shape which guides the front-end part of the said jack which moves ahead of a vehicle body at the time of a rear collision to the said facing part . The part covering from above is
Rear vehicle body structure according to claim 1, characterized in that inclined front end portion of the jack which moves the front of the vehicle body to the rear end collision so as to guide the vehicle body front lower side. Before SL jack, the rear vehicle body structure according to claim 1 or 3, characterized in that by drawing the jack to the rear of the vehicle body upper is removable from the jack support. Furthermore, it includes a cross member that protrudes upward from the upper surface of the floor panel in front of the vehicle body relative to the jack support portion and extends in the vehicle width direction,
The vehicle body rear part structure according to claim 1 , wherein the restricting member is disposed from the cross member toward the rear of the vehicle body. Furthermore, a rear side frame that is coupled to the floor panel and extends in the longitudinal direction of the vehicle body is disposed,
6. The vehicle body rear structure according to claim 5, wherein the restricting member is coupled to the floor panel on the rear side frame. The cross member is
A vertical wall portion having a height that restricts the jack from moving forward of the vehicle body at the time of a rear collision and having a facing portion facing the front end of the jack;
The vehicle body rear part structure according to claim 5 or 6 , wherein the regulating member has a shape that guides the front end portion of the jack that moves forward of the vehicle body in a rear collision to the facing portion. The facing portion is
A locking portion for locking the jack to the vertical wall portion so that the jack does not move over the vertical wall portion and move forward of the vehicle body when the front end portion of the jack collides with the facing portion at the time of rear collision. Have
The regulating member is
The vehicle body rear part structure according to claim 2 or 7 , characterized by having a shape for guiding a front end portion of the jack that moves forward of the vehicle body in a rear collision to the locking portion.

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