JP6557915B2 - Spare tire support structure for vehicle and spare tire removal method - Google Patents

Description

  The present invention relates to a vehicle spare tire support structure and a spare tire removal method.

  Some front-wheel drive vehicles include a spare tire suspended and supported below the rear floor (see, for example, Patent Document 1).

  In this type of vehicle spare tire support structure, a tire carrier made of a rod material or the like is attached to the lower surface of the rear floor. One end of the tire carrier is rotatably supported below the rear floor, and a locking portion for the vehicle body is provided on the other end side. A spare tire can be placed sideways on the tire carrier.

  In the above-described spare tire support structure, when removing the spare tire from the lower side of the rear floor, the tire carrier is inclined so that the other end side of the tire carrier is removed from the vehicle body side and the other end side is lowered. Pull down the spare tire from the top of the tire carrier. In addition, when mounting a spare tire below the rear floor, the tire carrier is inclined so that the other end of the tire carrier is downward, and the spare tire is placed on the tire carrier in this state, and the other end of the tire carrier is Lift to lock the locking part to the car body.

JP 2002-173057 A

  The above-described conventional spare tire support structure can be adopted as long as the differential is a front-wheel drive vehicle disposed at the front of the vehicle. However, in a four-wheel drive vehicle and a rear-wheel drive vehicle in which a differential device is disposed below the rear floor, a spare tire cannot be disposed below the rear floor due to the differential device being in the way. For this reason, in a four-wheel drive vehicle and a rear-wheel drive vehicle, a spare tire must be arranged above the rear floor. Therefore, in this type of vehicle, a spare tire is arranged above the rear floor, so that the luggage space and the article arrangement space on the rear floor are narrowed.

  Accordingly, the present invention provides a vehicle spare tire support that allows a spare tire to be supported at the rear of the vehicle without reducing the space above the rear floor as much as possible while the vehicle has a differential mounted below the rear floor. It is an object of the present invention to provide a structure and a method for attaching / detaching a spare tire.

The spare tire support structure for a vehicle according to the present invention employs the following configuration in order to solve the above problems.
That is, the vehicle spare tire support structure according to the present invention is a vehicle spare tire support structure in which a differential device (for example, the differential device 9 of the embodiment) is disposed below a rear floor (for example, the rear floor 6 of the embodiment). In the structure, a differential mounting cross member (for example, the differential mounting cross member 7 of the embodiment) on which the differential device is mounted is disposed below the rear floor, and the lower surface of the rear floor and the differential mounting cross member A tire housing portion (for example, the tire housing portion 8 of the embodiment) for housing a spare tire (for example, the spare tire 50 of the embodiment) is provided therebetween.
In this case, the spare tire is accommodated in the tire accommodating portion between the lower surface of the rear floor and the differential mounting cross member. Therefore, it is possible to dispose a spare tire below the rear floor while the vehicle has a differential device disposed below the rear floor.

A raised portion (for example, the raised portion 13 of the embodiment) that allows the spare tire to be disposed may be provided on the lower surface side in an upper region of the tire accommodating portion of the rear floor.
In this case, the spare tire can be accommodated in the upper position of the vehicle as much as the raised portion is provided on the rear floor. As a result, it is possible to improve the detachability of the spare tire while ensuring the clearance between the differential and the ground.

Below the rear floor, there is provided a tire carrier (for example, the tire carrier 51 of the embodiment) that supports the spare tire in a suspended manner and can be tilted when the spare tire is attached / detached, and the differential mounting cross member includes: A carrier support portion (for example, the closing plate 21 of the embodiment) that contacts the tire carrier and restricts the tilting of the tire carrier may be provided in a state where the tire carrier is inclined.
In this case, the spare tire is suspended and supported below the rear floor via the tire carrier. When removing the spare tire, the tire carrier is inclined so that one end side of the tire carrier is lowered downward, and the spare tire is pulled down from the tire carrier in this state. At this time, since the tilt of the tire carrier is regulated by the carrier support portion provided on the differential mounting cross member, the tire carrier is tilted at a predetermined angle without the end of the tire carrier being grounded to the ground. Can be maintained.

A rear end cross member (for example, the rear end cross member 5 of the embodiment) disposed at the rear portion of the rear floor and supporting the rear portion of the spare tire is provided, and a rear upper surface of the spare tire of the lower surface of the rear end cross member is provided. The confronting region may be provided with a concave portion that receives a part of the rear portion of the spare tire (for example, the concave portion 19 of the embodiment).
In this case, since the spare tire is disposed so as to wrap in the vertical direction with the rear end cross member, the spare tire can be accommodated at a higher position in the vehicle. For this reason, the differential and the ground clearance can be secured, and the workability for removing and attaching the spare tire can be improved.

The concave shape portion may be provided with a support surface (for example, the support surface 19a in the embodiment) that supports the spare tire substantially along the rear shape of the spare tire.
In this case, a wide range of the upper surface of the rear end of the spare tire can be stably supported by the support surface of the rear end cross member.

A rear floor cross member (for example, the rear floor cross member 4 of the embodiment) that supports the rear floor is disposed at a position ahead of the differential mounting cross member below the rear floor, and the spare tire includes the rear end cross. The support surface on the lower surface of the member and the lower surface of the rear floor between the rear end cross member and the rear floor cross member are provided directly or via another member (for example, the tire support plate 20 of the embodiment). Two support surfaces (for example, the support surface 20a of the embodiment) and a third support surface (for example, the support surface 4a of the embodiment) provided on the lower surface of the rear floor cross member are supported at three points. Also good.
In this case, the spare tire is stably supported below the rear floor by the three points of the support surface, the second support surface, and the third support surface that are separated from each other.

Below the rear floor, there is provided a tire carrier (for example, the tire carrier 51 of the embodiment) that supports the spare tire in a suspended manner and can be tilted when the spare tire is attached or detached, and the tire carrier is the spare tire. A main rod that extends substantially along the radial direction of the spare tire (for example, the main rod 52 of the embodiment), and a direction that is coupled to the main rod and intersects the extending direction of the main rod. An extended sub rod (for example, the sub rod 53 of the embodiment), and the main rod and the sub rod each support an outer peripheral support portion (for example, the outer peripheral support portion 52a of the embodiment, 53a), in front of the outer rod support portion of the main rod and the sub rod adjacent to the outer periphery support portion. A periphery supporting member, the interval (e.g., interval L1 embodiment) of the spare tire diameter (e.g., diameter D of the embodiment) may also be set smaller than.
In this case, the spare tire is supported by the main rod and the sub rod of the tire carrier and suspended below the rear floor. At this time, the outer peripheral portion of the spare tire is supported by the outer peripheral support portions of the main rod and the sub rod, but the interval between the adjacent outer peripheral support portions is set smaller than the diameter of the spare tire, so that when the spare tire is removed and attached, It is possible to prevent the tire from falling off between adjacent outer peripheral support portions. Therefore, when this configuration is adopted, the spare tire can be stably detached from the specified direction.

A floor cross member extending in the vehicle width direction (for example, the middle floor cross member 3 of the embodiment) is disposed at a position ahead of the differential mounting cross member below the rear floor. The front part is attached to the floor cross member, the rear part is attached to the differential mounting cross member, and the main body block of the differential apparatus (for example, the main body block 11 of the embodiment) is attached to the rear part of the differential apparatus. ) May be offset downward from the upper end position of the mounting portion (for example, the mounting portion 10 of the embodiment), and the mounting portion may be coupled to the lower surface of the differential mounting cross member.
In this case, it is possible to arrange the main body block of the differential device so as to be wrapped up and down on the front side of the differential mounting cross member. For this reason, when this configuration is adopted, a sufficient clearance between the differential and the ground can be ensured.

The differential mounting cross member may be formed in a substantially U-shape when viewed from the rear of the vehicle.
In this case, the number of parts can be reduced as compared with the case where a supporting member extending downward is attached to each of the left and right rear side frames and a linearly extending differential mounting cross member is installed at the lower end of the pair of supporting members. Can do. Therefore, when this configuration is adopted, the manufacturing cost can be reduced.

The differential mounting cross member is formed in a hat-shaped cross section by a plate-like member, and both end portions in the vehicle width direction of the differential mounting cross member are rear side frames (for example, the rear side frame 2 of the embodiment). ) In the vehicle width direction inner side may be coupled via a separate coupling member (for example, the coupling plate 23 of the embodiment).
Since the differential mounting cross member is formed in a substantially U-shape when viewed from the rear of the vehicle, even if an attempt is made to weld the flange portion of the cross section of the differential mounting cross member directly to the inner side surface of the rear side frame in the vehicle width direction. It is difficult to appropriately arrange the welding jig at the welding location because of the narrow member interval. However, in this configuration, both ends in the vehicle width direction of the differential mounting cross member are coupled to the inner side surface in the vehicle width direction of the rear side frame via separate connecting members, so that the differential mounting cross member and the rear side Sufficient bonding strength between the frames can be ensured.

The differential mounting cross member is formed in a hat-shaped cross section by a plate-shaped member, and a flange portion (for example, the flange portion 7f in the embodiment) of the hat-shaped cross section on the rear side of the vehicle body has a tip portion from the tire accommodating portion. A bending portion (for example, the bending portion 24 of the embodiment) that bends so as to face away may be provided.
In this case, since the edge of the flange portion on the vehicle body rear side of the differential mounting cross member is directed in a direction away from the tire housing portion by the curved portion, the spare tire is attached and detached by inserting a hand into the tire housing portion. Sometimes it is possible to avoid the operator's hand from touching the edge of the flange.

The differential mounting cross member includes a horizontal portion extending in the vehicle width direction (for example, the horizontal portion 7A in the embodiment), and left and right leg portions extending from the both ends of the horizontal portion toward the outer side obliquely upward (for example, The bead-shaped part (for example, bead-shaped part 22 of embodiment) extended in an up-down direction may be provided in the left and right leg parts.
In this case, the differential mounting cross member can be easily formed by press molding of a steel plate, and high rigidity of the left and right leg portions can be ensured by the bead shape portion.

The differential mounting cross member is formed into a hat-shaped cross section by a plate-like member, and the differential mounting cross member has a closing plate (for example, the closing plate 21 of the embodiment) that closes the opening of the hat-shaped cross section. It may be attached and the upper surface of the closing plate may constitute the carrier support.
In this case, the closing plate reinforces the cross section of the differential mounting cross member, and the closing plate prevents mud etc. from entering the hat-shaped cross section of the differential mounting cross member. Further, a plate material (blocking plate) that can be easily formed into an arbitrary shape by press molding can have a function of preventing intrusion of mud or the like into the hat-shaped cross section and a function of a carrier support portion. Therefore, when this configuration is adopted, vehicle manufacture can be facilitated.

A curved rod member (for example, the rod member 26 of the embodiment) whose lower end forms a jack-up point is fixed to a vehicle width direction outer side position of the concave portion on the lower surface of the rear end cross member. The opening area (for example, the opening area 26a in the embodiment) inside the section may be substantially closed by the lid member (for example, the lid member 27 in the embodiment).
In this case, since the opening area of the jack-up rod member arranged at the outer side position in the vehicle width direction of the tire housing portion is almost closed by the lid member, the operator's hand or object is used for jack-up when the spare tire is attached or detached. It is possible to prevent the rod member from being caught in the opening region.

A cylindrical nut member (for example, the nut member 29 of the embodiment) for fastening an eyebolt (for example, the eye bolt 28 of the embodiment) is disposed at an outer position in the vehicle width direction of the concave portion on the lower surface of the rear end cross member. May be fixed.
In this case, since the nut member for fastening the eyebolt is arranged at the outer side in the vehicle width direction of the tire accommodating portion, it is possible to suppress the nut member from interfering with the removal operation when the spare tire is attached or detached. Can do.

A rear bumper face (for example, the rear bumper face 30 of the embodiment) is attached to the rear end cross member, and the rear bumper face is a pair of side face blocks (for example, side portions of the embodiment) arranged on the left and right in the vehicle width direction. A center face block (for example, the center face block 30C of the embodiment) that is disposed between the face blocks 30L and 30R) and the pair of side face blocks and that is wider in the vehicle width direction than the diameter of the spare tire. And the central face block may be configured to be detachable from the left and right side face blocks.
In this case, only the central face block of the rear bumper face can be removed and the spare tire can be attached and detached. Therefore, when this configuration is adopted, a part of the rear bumper face (center face block) is removed, so that the spare tire can be easily attached and detached under the rear part of the vehicle. Further, when the central face block of the rear bumper face is removed, a step on the rear side of the upper surface of the rear floor can be eliminated, and loading / unloading of luggage and the like with respect to the rear floor can be facilitated.

A cylindrical nut member (for example, the nut member 29 of the embodiment) for fastening an eyebolt (for example, the eye bolt 28 of the embodiment) is disposed at an outer position in the vehicle width direction of the concave portion on the lower surface of the rear end cross member. A nut cover portion (for example, the embodiment of the embodiment) surrounding the rear side of the opening of the nut member (for example, the opening 29a of the embodiment) is fixed to one of the side face block and the center face block. A nut cover portion 32) may be provided.
In this case, since the rear side periphery of the opening of the nut member is surrounded by the nut cover portion of the rear bumper face, the nut cover portion can prevent mud, water, etc. from entering the opening of the nut member.

In order to solve the above problems, the spare tire removal method according to the present invention employs the following configuration.
That is, in the method for attaching and detaching a spare tire according to the present invention, a differential device (for example, the differential device 9 of the embodiment) and the differential device are mounted below the rear floor (for example, the rear floor 6 of the embodiment). A differential mounting cross member (for example, the differential mounting cross member 7 of the embodiment) is disposed, and a spare tire (for example, the spare tire 50 of the exemplary embodiment) is disposed between the lower surface of the rear floor and the differential mounting cross member. ), A rear end cross member that is disposed at the rear part of the rear floor and supports the rear part of the spare tire. For example, a rear bumper face (for example, the rear bumper face 30 of the embodiment) is attached to the rear end cross member 5) of the embodiment. The rear bumper face is disposed between a pair of side face blocks (for example, the side face blocks 30L and 30R in the embodiment) disposed on the left and right in the vehicle width direction, and the pair of side face blocks. A central face block (for example, the central face block 30C of the embodiment) having a width in the vehicle width direction wider than the diameter of the spare tire, and the central face block with respect to the left and right side face blocks It is configured to be detachable, and the central face block is detached from the left and right side face blocks when the spare tire is detached.
In this case, by removing a part of the rear bumper face (the central face block), the spare tire can be easily attached and detached under the rear part of the vehicle.

  According to the spare tire support structure of the present invention, since the tire accommodating portion is provided between the lower surface of the rear floor and the differential mounting cross member, even in a vehicle in which the differential device is disposed below the rear floor, The spare tire can be supported at the rear of the vehicle without occupying the space above the rear floor with the spare tire.

  In addition, according to the method for attaching and detaching a spare tire of the present invention, it is possible to easily perform the operation of detaching the spare tire at the lower rear portion of the vehicle.

It is the bottom view which removed a part component of the rear region of vehicles of one embodiment of the present invention. It is the rear view which removed some components of the rear region of vehicles of one embodiment of the present invention. It is the side view which removed some components of the rear region of the vehicle of one embodiment of the present invention. It is a perspective view of the mounting part of the differential of one Embodiment of this invention. It is sectional drawing corresponding to the VV cross section of FIG. 4 of the mounting part of the differential of one Embodiment of this invention. It is the fragmentary sectional perspective view made into the cross section by the VI-VI cross-section part of FIG. 3 of the vehicle of one Embodiment of this invention. It is sectional drawing which shows typically the spare tire support structure of the vehicle of one Embodiment of this invention. It is the perspective view which removed some components of the rear region of the vehicle of one embodiment of the present invention. It is the bottom view which removed a part component of the rear region of vehicles of one embodiment of the present invention. It is the bottom view which removed a part component and spare tire of the rear region of vehicles of one embodiment of the present invention. It is the fragmentary sectional perspective view made into the cross section by the XI-XI cross-section part of FIG. 8 of the vehicle of one Embodiment of this invention. It is sectional drawing which follows the XII-XII line | wire of FIG. 4 of the cross member for differential mounting of one Embodiment of this invention. It is a perspective view of the XIII portion of Drawing 2 of vehicles of one embodiment of the present invention. It is a perspective view of the XIV part of FIG. 2 of the vehicle of one Embodiment of this invention. It is the XV arrow directional view of FIG. 1 of the rear end cross member of one Embodiment of this invention. It is a rear view of the rear bumper face of the vehicle of one embodiment of the present invention. It is a rear view of the side face block of the vehicle of one embodiment of the present invention. FIG. 3 is an enlarged perspective view of the rear portion of the vehicle for explaining the operation of the tire carrier when removing the spare tire of the vehicle according to the embodiment of the present invention. It is a perspective view of the vehicle rear part for demonstrating the removal procedure of the spare tire of the vehicle of one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that an arrow FR indicating the front of the vehicle, an arrow UP indicating the upper side of the vehicle, and an arrow LH indicating the left side of the vehicle are shown at appropriate positions in the drawing.

FIG. 1 is a view of a rear region of a vehicle 1 according to the embodiment as viewed from below with some components removed. FIG. 2 is a view of the vehicle 1 from which some parts have been removed as viewed from the rear, and FIG. 3 is a view of the vehicle 1 from which some parts have been removed as viewed from the left side.
The vehicle 1 of the present embodiment is a four-wheel drive vehicle that transmits driving force from a power source such as an engine to front wheels and rear wheels. A pair of rear side frames 2 extending substantially along the longitudinal direction of the vehicle body are disposed on the left and right sides of the rear portion of the vehicle 1. A middle floor cross member 3 (floor cross member) extending along the vehicle width direction is installed at the front end portions of the left and right rear side frames 2. Further, a rear floor cross member 4 extending in the vehicle width direction is installed in the center region in the front-rear direction of the left and right rear side frames 2, and the rear end portions of the left and right rear side frames 2 are similarly extended in the vehicle width direction. A rear end cross member 5 that extends is extended. A rear floor 6 is joined to the left and right rear side frames 2, the middle floor cross member 3, the rear floor cross member 4, and the rear end cross member 5, and the rear floor 6 is supported by these.

  A differential mounting cross member 7 extending in the vehicle width direction is installed between the installation positions of the rear floor cross member 4 and the rear end cross member 5 in the left and right rear side frames 2. As shown in FIG. 2, the differential mounting cross member 7 is formed in a substantially U shape in which a central region is depressed downward in a vehicle rear view. Therefore, a space is provided between the central region in the vehicle width direction of the differential mounting cross member 7 and the rear floor 6. This space portion constitutes the tire accommodating portion 8. A spare tire 50 is accommodated in the tire accommodating portion 8 via a tire carrier 51.

A rear wheel differential 9 that distributes and transmits the power of a drive source such as an engine to the left and right rear wheels is disposed below the central region of the rear floor 6.
FIG. 4 is a view of the mounting portion of the differential device 9 as viewed from the rear right obliquely lower side, and FIG.
The differential device 9 is fixed to the lower surface of the differential mounting cross member 7 via a pair of mount portions 10 having a buffer function. The differential device 9 includes a main body block 11 that houses the differential mechanism therein, and a rear connection block 12 that extends to the rear of the main body block 11. A propeller shaft (not shown) for driving transmission is connected to the front center of the main body block 11. Further, rear wheel axles (not shown) are connected to the left and right sides of the main body block 11.

FIG. 6 is a perspective view showing the vehicle 1 in a section taken along the line VI-VI in FIG. 3, and FIG. It is typical sectional drawing made into the cross section along.
As shown in these drawings, a raised portion 13 that allows the spare tire 50 to be arranged is formed on the lower surface side of the rear floor 6 above the tire accommodating portion 8. The raised portion 13 has a central region raised upward so that the plan view has a substantially circular shape substantially along the outer peripheral shape of the spare tire 50. Thereby, the tire accommodating portion 8 is expanded upward relative to the other portions of the rear floor 6 by the amount of the raised portion 13.

FIG. 8 is a view of the rear region of the vehicle 1 as seen from diagonally below the rear right side with the differential mounting cross member 7 removed, and FIG. 9 shows the rear region of the vehicle 1 in which the differential mounting cross member 7 is similarly removed. It is the figure which looked at from the bottom.
The tire carrier 51 is coupled to the main rod 52 extending substantially along the diameter direction of the spare tire 50 on the lower side of the spare tire 50, and the extending direction of the main rod 52 coupled to the approximately center of the extending direction of the main rod 52. And a sub-rod 53 extending in a direction intersecting with. The main rod 52 and the sub rod 53 are formed of a metal material, and are welded and fixed to each other at the intersection. Outer peripheral support portions 52 a and 53 a that are bent upward and support the outer peripheral portion of the spare tire 50 are formed at both ends of the main rod 52 and the sub rod 53 in the extending direction.

The main rod 52 is integrally formed with an end portion in the extending direction of the outer peripheral support portion 52a on one end side, and a pivot portion 52b bent in a substantially U shape. The pivot portion 52 b is rotatably supported on the lower surface of the front region of the rear floor 6 via the support bracket 14. The tire carrier 51 is supported on the lower surface of the rear floor 6 so as to be tiltable around the pivotal support portion 52b of the main rod 52.
Further, an engaging portion 52c bent in a substantially U-shape is integrally formed at an end portion of the outer peripheral support portion 52a on the other end side of the main rod 52 in the extending direction. A metal locking plate 15 having an insertion slit 15a is integrally attached to the locking portion 52c. The locking portion 52c can be locked to the rear end cross member 5 at the rear of the vehicle body via a separate fixing rod 16.

  As shown in FIG. 8, the fixing rod 16 is integrally formed with a locking hook 16 a at the upper end, and a locking bolt 17 is screwed into the lower end. The locking hook 16 a of the fixed rod 16 can be supported by being suspended from a fixed bracket 18 attached to the rear surface of the rear end cross member 5. The locking portion 52c of the main rod 52 is locked to the rear portion of the vehicle body when the locking bolt 17 is tightened in a state where the fixing rod 16 is inserted into the insertion slit 15a of the locking plate 15. Specifically, the spare tire 50 is placed sideways on the upper portion of the tire carrier 51, and the locking bolt 17 is tightened with a tool in this state. As a result, the locking portion 52 c of the main rod 52 is restrained by the rear end cross member 5 via the fixed rod 16 in a state where the spare tire 50 is pressed against the lower surface side of the rear floor 6 in the central region of the tire carrier 51.

Here, as shown in FIG. 9, the main rod 52 is rotatably supported at a position where the pivotal support portion 52 b on one end side is biased to the left side with respect to the center portion in the vehicle width direction of the rear floor 6. The locking portion 52c is locked at a position offset to the right side of the center portion in the vehicle width direction of the rear end cross member 5. For this reason, the main rod 52 extends obliquely with respect to the central axis of the vehicle body in the vehicle width direction. The sub rod 53 is coupled to a substantially central portion in the extending direction of the main rod 52. The tire center of the spare tire 50 is located above the joint between the sub rod 53 and the main rod 52. As shown in FIG. 9, the sub rod 53 is formed to bend around a connecting portion with the main rod 52 in the bottom view of the vehicle body. This bending is provided in order to prevent the outer peripheral support portion 53a of the sub rod 53 from interfering with the spare tire 50 when the spare tire 50 is attached to and detached from the rear of the vehicle body. In the case of the sub rod 53 of the present embodiment, as shown in FIG. 9, the left extending portion is bent so as to extend along the vehicle width direction with respect to the connecting portion with the main rod 52.
However, the distance L1 (see FIG. 9) between the outer periphery support portion 52a of the main rod 52 and the outer periphery support portion 53a of the sub rod 53 adjacent to the main rod 52 is set smaller than the diameter D (see FIG. 9) of the spare tire 50. Yes.

FIG. 10 is a view of the rear region of the vehicle 1 as viewed from below with the tire carrier 51 and the spare tire 50 removed, and FIG. 11 is a partial cross-sectional perspective view of the vehicle 1 taken along the XI-XI cross-section of FIG. FIG.
As shown in FIGS. 10 and 11, in a region facing the rear upper surface of the spare tire 50 on the lower surface of the rear end cross member 5, a part of the rear portion of the spare tire 50 is received by being recessed concavely upward. A concave portion 19 is provided. The concave portion 19 is formed in a concave curved surface shape so as to substantially follow the shape of the upper half portion of the rear side of the spare tire 50. The inner surface of the concave portion 19 is a support surface 19 a that supports the upper surface of the rear central region of the spare tire 50. In the case of this embodiment, as shown in FIGS. 2 and 8, the entire area of the central region of the lower surface of the rear end cross member 5 is recessed upward.

  A metal tire support plate 20 is attached to a part of the lower surface of the rear floor 6 as shown in FIG. The tire support plate 20 is attached to a position on the right side in the vehicle width direction between the rear end cross member 5 and the rear floor cross member 4 on the lower surface of the rear floor 6. The tire support plate 20 has a support surface 20a (second support surface) that supports the upper surface of the spare tire 50 on the right side of the rear part. The support surface 20 a is positioned above the installation portion of the differential mounting cross member 7. In the present embodiment, the support surface (second support surface) is provided on the lower surface of the rear floor 6 via a tire support plate 20 which is a separate member, but the support surface (second support surface) is the rear floor. 6 may be provided directly on the lower surface.

  Further, the lower surface of the rear floor cross member 4 at a position biased to the left in the vehicle width direction is a support surface 4a (third support surface) that supports the upper surface of the spare tire 50 on the left side of the rear portion. The support surface 19a of the rear end cross member 5, the support surface 20a of the tire support plate 20, and the support surface 4a of the rear floor cross member 4 are supported when the spare tire 50 is suspended and supported below the rear floor 6 via the tire carrier 51. The upper surface of the spare tire 50 is supported at three points.

12 is a cross-sectional view of the differential mounting cross member 7 taken along line XII-XII in FIG.
As shown in FIGS. 4 and 12, the differential mounting cross member 7 is formed in a substantially U shape in the vehicle rear view as described above, and has a horizontal portion 7A extending along the vehicle width direction, and a horizontal portion. Left and right leg portions 7B extending obliquely upward and outward from both end portions of 7A. Further, the differential mounting cross member 7 is formed of a metal plate-like member, and a cross section of almost the entire region in the extending direction is formed in a hat-like cross section. A closing plate 21 made of a metal material is attached to the opening of the hat-shaped cross section of the central horizontal portion 7A. The closing plate 21 closes the opening of the hat-shaped cross section of the horizontal portion 7A. Further, the closing plate 21 is separated from the tire carrier 51 with a predetermined distance in a state where the tire carrier 51 is fixed to the vehicle body. It comes to contact | abut with the upper surface. The upper surface of the closing plate 21 constitutes a carrier support part that abuts the tire carrier 51 in a state where the tire carrier 51 is inclined and is attached and detached, thereby restricting the inclination of the tire carrier 51.

  Further, as shown in FIGS. 4 and 12, bead-shaped portions 22 extending in the vertical direction are formed on the left and right leg portions 7B of the differential mounting cross member 7. The bead-shaped portion 22 has a central region in the cross section of the leg portion 7B that bulges outward in the vehicle width direction. The right and left leg portions 7B are improved in bending rigidity and torsional rigidity by the bead-shaped portions 22 that are continuous in the vertical direction.

  The ends of the leg portions 7B of the differential mounting cross member 7 are coupled to the bottom walls of the corresponding left and right rear side frames 2 and the inner side walls in the vehicle width direction by welding or the like. However, as shown in FIG. 6, a metal connecting plate 23 (connecting member) is attached to the inner portion of the hat-shaped cross section of the edge in the extending direction of each leg 7 </ b> B. Are welded to the corresponding side wall in the vehicle width direction of the rear side frame 2.

13 is a view of a portion of the vehicle 1 corresponding to the XIII portion of FIG.
As shown in FIG. 13, the flange portion 7 f on the vehicle body rear side of the hat-shaped cross section of the differential mounting cross member 7 is provided with a curved portion 24 that curves so that the tip portion faces away from the tire housing portion 8. It has been. Accordingly, the edge of the flange portion 7 f on the rear side of the vehicle body is directed in a direction away from the tire housing portion 8.

  The differential 9 is disposed below the mounting portion of the tire carrier 51 described above, and the front right side portion of the main body block 11 is supported on the lower surface of the middle floor cross member 3 via the support rod 25. The rear connection block 12 of the differential 9 extends below the horizontal portion 7A of the differential mounting cross member 7, and is connected by the mount portion 10 to two positions spaced apart in the vehicle width direction on the lower surface of the horizontal portion 7A. ing. The left and right mount portions 10 that connect the rear connection block 12 to the lower surface of the differential mounting cross member 7 are disposed at positions offset downward from the upper end position of the main body block 11 of the differential device 9.

14 is a view of a portion of the vehicle 1 corresponding to the XIV portion of FIG.
As shown in FIG. 14, a curved rod member 26 whose lower end forms a jack-up point is fixed to the left side of the concave portion 19 on the lower surface of the rear end cross member 5 by welding or the like. The rod member 26 is curved in a substantially U shape from the joint with the lower surface of the rear end cross member 5 toward the lower side of the vehicle body, and the lower end of the curved portion serves as a jack-up point. The rod member 26 is attached with a lid member 27 that substantially closes the opening region 26a inside the curved portion.

15 is a view of the rear end cross member 5 as viewed in the direction of the arrow XV in FIG.
As shown in FIG. 15, a cylindrical nut member 29 for fastening an eyebolt 28 used for towing a vehicle or the like is provided at the outer side in the vehicle width direction on the right side of the concave portion 19 on the lower surface of the rear end cross member 5. Is fixed by welding. The nut member 29 has an opening 29a in which an internal thread is cut, and is fixed to the rear end cross member 5 so that the opening 29a faces the rear side of the vehicle body.

FIG. 16 is a rear view of the rear bumper face 30 attached to the rear side of the rear end cross member 5.
The rear bumper face 30 includes a pair of side face blocks 30L and 30R disposed on the left and right in the vehicle width direction, and a central face block 30C disposed between the pair of side face blocks 30L and 30R. The central face block 30C is configured to be removable from the left and right side face blocks 30L and 30R. The main parts of the side face blocks 30L and 30R and the central face block 30C are formed of a resin material. The left and right side face blocks 30L and 30R are substantially L-shaped when viewed from the rear, and are arranged at the lower corners of the rear part of the vehicle body. On the other hand, the central face block 30C is formed in a straight line extending rearward in the horizontal direction. The width of the central face block 30 </ b> C in the vehicle width direction is set wider than the diameter D of the spare tire 50. When the spare tire 50 is attached / detached, the center face block 30C is removed so that the attachment / detachment work can be easily performed through the opening between the left and right side face blocks 30L, 30R.
The central face block 30C is formed so that the design surfaces of the left and right side face blocks 30L and 30R are flush with each other, and is detachably attached to the rear end cross member 5 by bolt fastening, clip fixing, or the like.

FIG. 17 is a rear view of the right side face block 30R.
As shown in FIG. 17, an engagement piece 31 that is engaged with the right side end portion of the central face block 30C is extended from the inner end portion of the side face block 30R in the vehicle width direction. The engaging piece 31 is integrally formed with a nut cover portion 32 that surrounds the periphery of the rear side of the opening 29 a of the nut member 29 fixed to the lower surface of the rear end cross member 5. Bolt insertion openings 32a and 30Ca for inserting the eyebolts 28 into the openings 29a of the nut member 29 are formed at the corresponding positions of the nut cover part 32 and the central face block 30C overlapped on the rear side of the nut cover part 32. ing.

Next, with reference to FIGS. 18 and 19, a method for attaching and detaching the spare tire 50 of the vehicle 1 of the present embodiment will be described. 18 is an enlarged perspective view of the rear portion of the vehicle for explaining the operation of the tire carrier 51 when the spare tire 50 is removed, and FIG. 19 is a rear view of the vehicle for explaining the procedure for removing the spare tire 50 thereafter. It is a perspective view.
The spare tire 50 is placed on the tire carrier 51 while being laid sideways in a state where the spare tire 50 is suspended and supported below the rear floor 6. At this time, the rear end portion of the tire carrier 51 is locked and fixed to the rear end cross member 5 via the fixing rod 16.

  When removing the spare tire 50 from this state, first, only the central face block 30C of the rear bumper face 30 is removed from the vehicle body. Thereafter, as shown in FIG. 18 (A), the locking bolt 17 fastened to the lower end of the fixed rod 16 is loosened with a tool, and in this state, the fixed rod 16 is inclined as shown in FIG. 18 (B). Thus, the engagement between the locking portion 52c of the tire carrier 51 and the fixed rod 16 is released. Thereafter, the fixing rod 16 is appropriately removed from the fixing bracket 18.

  When the locking portion 52c of the tire carrier 51 is removed from the vehicle body side, the tire carrier 51 assumes an inclined posture with the rear end side downward as shown in FIG. 19A, with the pivot portion 52b on the front end side as the center. . At this time, the tire carrier 51 receives the weight of the spare tire 50 and tends to incline greatly. However, when the tire carrier 51 inclines to a certain angle, the lower surface of the tire carrier 51 is above the differential mounting cross member 7 (blocking plate 21). The upper surface). As a result, the inclination angle of the tire carrier 51 is restricted to a constant angle.

  In this state, the operator inserts his hand into the tire accommodating portion 8 from the rear of the vehicle body, and pulls the spare tire 50 below the rear portion of the vehicle 1 along the upper surface of the tire carrier 51 as shown in FIG. take down. Thereafter, the worker performs replacement work of the spare tire 50 and the like.

  When the spare tire 50 is accommodated below the rear floor 6, the spare tire 50 is placed on the tire carrier 51 by a procedure reverse to the procedure for removing the spare tire 50, and the rear portion of the tire carrier 51 is moved upward while remaining in this state. And the rear portion of the tire carrier 51 is fixed to the vehicle body using the fixing rod 16. Thereafter, the central face block 30C of the rear bumper face 30 is attached to the vehicle body.

  As described above, in the spare tire support structure of the present embodiment, the tire accommodating portion 8 is provided between the lower surface of the rear floor 6 and the differential mounting cross member 7. For this reason, even in a four-wheel drive vehicle in which the differential 9 is disposed below the rear floor 6, the spare tire 50 is supported on the rear of the vehicle without occupying the space above the rear floor 6 with the spare tire 50. Can do.

  In the spare tire support structure of the present embodiment, a raised portion 13 that allows the spare tire 50 to be disposed on the lower surface side is provided in the rear floor 6 in the region above the tire accommodating portion 8. For this reason, the spare tire 50 can be accommodated in the upper position of the vehicle because the raised portion 13 is provided on the rear floor 6. Therefore, when this configuration is adopted, it is possible to improve the detachability of the spare tire 50 while ensuring a large clearance between the differential gear 9 and the ground.

  Further, in the spare tire support structure of the present embodiment, a carrier support portion (blocking plate 21) with which the tire carrier 51 in an inclined detaching posture abuts is provided on the upper portion of the differential mounting cross member 7. For this reason, when the spare tire 50 is attached or detached, the inclination angle of the tire carrier 51 can be regulated by the carrier support portion (blocking plate 21). Therefore, when this configuration is adopted, the tire carrier 51 can be maintained in the detaching posture in which the tire carrier 51 is inclined at an appropriate angle without the end of the tire carrier 51 being grounded to the ground.

  Further, in the spare tire support structure of the present embodiment, a concave portion that receives a part of the rear portion of the spare tire 50 in a region facing the rear upper surface of the spare tire 50 in the lower surface of the rear end cross member 5 of the vehicle body. 19 is provided. For this reason, a part of the spare tire 50 is disposed so as to wrap in the vertical direction with the rear end cross member 5, and the spare tire 50 can be accommodated at a position higher than the vehicle. Therefore, when this configuration is adopted, the clearance between the differential 9 and the ground can be secured, and the spare tire detachment workability can be further enhanced.

  Further, in the present embodiment, the support surface 19 a that supports the rear portion of the spare tire 50 substantially along the rear shape of the spare tire 50 is formed in the concave portion 19 of the rear end cross member 5. Therefore, when this configuration is adopted, a wide range in the vicinity of the rear end portion of the spare tire 50 can be stably supported by the support surface 19 a of the rear end cross member 5.

  In the spare tire support structure of the present embodiment, the support surface 19a is provided on the lower surface of the rear end cross member 5, and the lower surface of the tire support plate 20 between the rear end cross member 5 and the rear floor cross member 4 and the rear floor. Support surfaces 20a and 4a are provided on the lower surface of the cross member 4, and the upper surface of the spare tire 50 is supported at three points by these support surfaces 19a, 20a and 4a. Therefore, when this configuration is adopted, the spare tire 50 can be stably supported below the rear floor 6.

  Further, in the spare tire support structure of the present embodiment, the main rod 52 and the sub rod 53 of the tire carrier 51 are coupled so as to cross each other, and the outer periphery support portion 52a of the main rod 52 and the outer periphery support portion 53a of the sub rod 53 are spare. The outer periphery of the tire 50 is supported. An interval L1 between the outer periphery support portion 52a of the main rod 52 and the outer periphery support portion 53a of the sub rod 53 adjacent to the outer periphery support portion 52a is set to be smaller than the diameter D of the spare tire 50. For this reason, in the spare tire support structure of the present embodiment, the outer peripheral portion of the spare tire 50 is supported by the outer peripheral support portions 52a and 53a of the main rod 52 and the sub rod 53. Since the distance L1 between the spare tires 50 is smaller than the diameter D of the spare tire 50, the spare tire 50 can be prevented from falling off between the adjacent outer peripheral support portions 52a and 53a when the spare tire 50 is attached and detached. Therefore, when this configuration is adopted, the spare tire 50 can be stably detached from the specified direction (rear of the vehicle 1).

  In the spare tire support structure of the present embodiment, the main body block 11 on the front side of the differential 9 is attached to the middle floor cross member 3, and the rear connection block 12 is attached to the differential mounting cross member 7. The rear connection block 12 is provided with a mount portion 10 that is offset downward from the upper end position of the main body block 11. The rear connecting block 12 of the differential 9 is connected to the differential mounting cross member 7 by connecting the mount portion 10 to the lower surface of the differential mounting cross member 7. For this reason, the main body block 11 of the differential device 9 can be disposed so as to be wrapped up and down on the front side of the differential mounting cross member 7. Therefore, when this configuration is employed, a sufficient clearance between the differential 9 and the ground can be ensured.

  Furthermore, in the spare tire support structure of the present embodiment, the differential mounting cross member 7 is formed to have a substantially U-shape when viewed from the rear of the vehicle. For this reason, the number of parts can be reduced compared with the case where supporting members extending downward are attached to the left and right rear side frames 2 and the differential mounting cross member extending linearly is installed at the lower ends of these supporting members. it can. Therefore, when this configuration is adopted, the manufacturing cost can be reduced.

  Further, in the spare tire support structure of the present embodiment, the differential mounting cross member 7 is formed in a hat-like cross section by a plate-like member, and both ends of the differential mounting cross member 7 in the vehicle width direction are arranged on the vehicle of the rear side frame 2. The connecting plate 23 is coupled to the inner side surface in the width direction. Since the differential mounting cross member 7 of the present embodiment is formed in a substantially U shape when viewed from the rear of the vehicle, the flange portion having a hat-shaped cross section is fixed to the inner side surface of the rear side frame 2 by spot welding or the like. Difficult to do. That is, it is difficult to arrange a welding jig for welding the flange portion having the hat-shaped cross section and the side surface of the rear side frame 2 on the inner side in the vehicle width direction of the rear side frame 2. However, in the case of the present embodiment, both ends of the differential mounting cross member 7 in the vehicle width direction are coupled to the inner side surface of the rear side frame 2 via the connecting plate 23, and therefore the differential mounting cross member 7. And a sufficient bonding strength between the rear side frame 2 can be ensured.

  Further, in the spare tire support structure of the present embodiment, a curve that curves so that the front end of the differential mounting cross member 7 faces away from the tire accommodating portion 8 toward the flange portion 7f on the vehicle body rear side of the hat-shaped cross section. A portion 24 is provided. Therefore, the edge of the flange portion 7 f on the vehicle body rear side of the differential mounting cross member 7 is directed in a direction away from the tire accommodating portion 8 by the curved portion 24. Therefore, when this configuration is adopted, when the operator inserts his / her hand into the tire accommodating portion 8 and performs the detaching operation of the spare tire 50, the operator's hand is prevented from touching the edge of the flange portion 7f. be able to.

  Further, in the spare tire support structure of the present embodiment, the differential mounting cross member 7 includes a horizontal portion 7A extending along the vehicle width direction, and left and right leg portions extending obliquely upward and outward from both ends of the horizontal portion 7A. 7B, and the left and right leg portions 7B are provided with bead-shaped portions 22 extending in the vertical direction. When this configuration is adopted, the differential mounting cross member 7 can be easily formed by press molding of a steel plate, and the high rigidity of the left and right leg portions 7B can be secured by the bead shape portion 22.

  Further, in the spare tire support structure of the present embodiment, the differential mounting cross member 7 is formed in a hat-shaped cross section by a plate-shaped member, and the differential mounting cross member 7 is closed so as to close the opening of the hat-shaped cross section. A closing plate 21 is attached. The upper surface of the closing plate 21 constitutes a carrier support portion that restricts the tilt of the tire carrier 51. For this reason, the cross section of the differential mounting cross member 7 can be reinforced by the closing plate 21 and mud etc. can be prevented from entering the hat-shaped cross section of the differential mounting cross member 7. Further, in the present embodiment, the plate material (blocking plate 21) that can be easily formed into an arbitrary shape by press molding has a function of preventing the intrusion of mud and the like into the hat-shaped cross section and the function of the carrier support portion. The manufacture of the rear part of the vehicle body can be facilitated.

  Further, in the spare tire support structure of the present embodiment, a curved rod member 26 whose lower end forms a jack-up point is fixed to the vehicle width direction outer side position of the concave portion 19 on the lower surface of the rear end cross member 5, and the rod The opening area 26 a inside the curved portion of the member 26 is almost closed by the lid member 27. For this reason, it is possible to prevent an operator's hand or object from being caught in the opening region 26 a of the rod member 26 when the spare tire 50 is attached or detached.

  Furthermore, in the case of the spare tire support structure of the present embodiment, a cylindrical nut member 29 for fastening the eyebolt 28 is fixed to the outer side position in the vehicle width direction of the concave portion 19 on the lower surface of the rear end cross member 5. . For this reason, it is possible to prevent the nut member 29 from hindering the detaching operation when the spare tire 50 is detaching.

  In the spare tire support structure of the present embodiment, the rear bumper face 30 attached to the rear end cross member 5 includes a pair of side face blocks 30L and 30R arranged on the left and right in the vehicle width direction, and a pair of side face blocks 30L. , 30R, and a central face block 30C disposed between them. The central face block 30C is formed wider in the vehicle width direction than the diameter D of the spare tire 50, and is configured to be detachable from the left and right side face blocks 30L and 30R. For this reason, only the central face block 30C of the rear bumper face 30 can be removed, and the spare tire 50 can be attached and detached. Therefore, when this configuration is adopted, only the central face block 30C can be removed, and the spare tire 50 can be easily attached and detached under the rear part of the vehicle.

Further, in the spare tire support structure of the present embodiment, the nut member 29 is fixed to the outer position in the vehicle width direction of the concave portion 19 on the lower surface of the rear end cross member 5, and the nut member 29 is attached to one side face block 30R. A nut cover portion 32 that surrounds the periphery of the rear side of the opening 29a is provided. For this reason, the nut cover portion 32 can suppress mud, water, and the like from entering the opening 29 a of the nut member 29.
The nut cover portion 32 may be provided not on the side face block 30R but on the central face block 30C.

Furthermore, the method for detaching the spare tire 50 according to the present embodiment is configured such that the central face block 30C of the rear bumper face 30 is detachable from the left and right side face blocks 30L, 30R. The central face block 30C is removed from the left and right side face blocks 30L and 30R.
When the method for detaching / attaching the spare tire 50 according to the present embodiment is adopted, the detaching operation of the spare tire 50 under the rear portion of the vehicle 1 can be easily performed by removing the central face block 30C.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, the vehicle of the above-described embodiment is a four-wheel drive vehicle in which front wheels and rear wheels are driven. However, if the differential device is disposed below the rear floor 6, the vehicle is a rear wheel drive vehicle. Also good.

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Rear side frame 3 ... Middle floor cross member (floor cross member)
4 ... Rear floor cross member 4a ... Support surface (third support surface)
5 ... Rear end cross member 6 ... Rear floor 7 ... Differential mounting cross member 7A ... Horizontal part 7B ... Leg part 7f ... Flange part 8 ... Tire housing part 9 ... Differential gear 10 ... Mount part 11 ... Main body block 13 ... Rising part 19 ... concave shaped part 20 ... tire support plate (separate member)
20a ... support surface (second support surface)
21 ... Closure plate (carrier support)
22 ... Bead-shaped part 23 ... Connection plate (connection member)
24 ... Curved portion 26 ... Rod member 26a ... Opening region 27 ... Lid member 28 ... Eye bolt 29 ... Nut member 29a ... Opening 30 ... Rear bumper face 30L, 30R ... Side face block 30C ... Central face block 32 ... Nut cover part 50 ... Spare tire 51 ... Tire carrier 52 ... Main rod 53 ... Sub rod 52a, 53a ... Outer peripheral support L1 ... Distance D ... Diameter

Claims (18)

In the vehicle spare tire support structure in which the differential is arranged below the rear floor,
A differential mounting cross member for mounting the differential is disposed below the rear floor,
A spare tire support structure for a vehicle, wherein a tire accommodating portion for accommodating a spare tire is provided between a lower surface of the rear floor and the differential mounting cross member.   2. The spare tire support structure for a vehicle according to claim 1, wherein a raised portion that allows the spare tire to be disposed is provided on a lower surface side in an upper region of the tire accommodating portion of the rear floor. Below the rear floor, there is provided a tire carrier that supports the suspension of the spare tire, and can be tilted when the spare tire is attached and detached.
2. The differential mounting cross member is provided with a carrier support portion that abuts on the tire carrier and regulates the tilt of the tire carrier in a state where the tire carrier is tilted and detached. Or a spare tire support structure for a vehicle according to 2; A rear end cross member disposed at a rear portion of the rear floor and supporting a rear portion of the spare tire;
2. A concave portion that receives a part of the rear portion of the spare tire is provided in a region of the lower surface of the rear end cross member that faces the upper surface of the rear portion of the spare tire. The spare tire support structure for a vehicle according to any one of?   5. The vehicle spare tire support structure according to claim 4, wherein a support surface that supports the spare tire is provided substantially along the rear shape of the spare tire. A rear floor cross member that supports the rear floor is disposed at a position ahead of the differential mounting cross member below the rear floor,
The spare tire is provided on the support surface on the lower surface of the rear end cross member and on the lower surface of the rear floor between the rear end cross member and the rear floor cross member, or a second support surface provided via another member. 6. The spare tire support structure for a vehicle according to claim 5, wherein the vehicle is supported at three points by a third support surface provided on a lower surface of the rear floor cross member. Below the rear floor, there is provided a tire carrier that supports the suspension of the spare tire, and can be tilted when the spare tire is attached and detached.
The tire carrier is
A main rod extending substantially along the radial direction of the spare tire on the lower side of the spare tire;
A sub rod coupled to the main rod and extending in a direction crossing the extending direction of the main rod,
The main rod and the sub rod each have an outer peripheral support portion that supports an outer peripheral portion of the spare tire,
The distance between the outer periphery support portion of the main rod and the outer periphery support portion of the sub rod adjacent to the outer periphery support portion is set to be smaller than the diameter of the spare tire. A spare tire support structure for a vehicle as described in 1. A floor cross member extending in the vehicle width direction is disposed at a position ahead of the differential mounting cross member below the rear floor,
The differential has a front portion attached to the floor cross member and a rear portion attached to the differential mounting cross member.
At the rear of the differential device, a mount portion is provided that is offset downward from the upper end position of the main body block of the differential device,
The spare tire support structure for a vehicle according to any one of claims 1 to 7, wherein the mount portion is coupled to a lower surface of the differential mounting cross member.   9. The vehicle spare tire support structure according to claim 1, wherein the differential mounting cross member is formed in a substantially U-shape when viewed from the rear of the vehicle. The differential mounting cross member is formed in a hat-shaped cross section by a plate-shaped member,
The both ends of the differential mounting cross member in the vehicle width direction are connected to the inner side surfaces of the left and right rear side frames in the vehicle width direction via separate connecting members. Item 14. A spare tire support structure for a vehicle according to Item 9.   The differential mounting cross member is formed in a hat-shaped cross section by a plate-like member, and a curved portion is curved so that a front end portion thereof faces away from the tire accommodating portion at a flange portion on the vehicle body rear side of the hat-shaped cross section. The spare tire support structure for a vehicle according to claim 9 or 10, wherein a portion is provided. The differential mounting cross member has a horizontal portion extending along the vehicle width direction, and left and right leg portions extending diagonally upward and outward from both ends of the horizontal portion,
The spare tire support structure for a vehicle according to any one of claims 9 to 11, wherein the left and right leg portions are provided with bead-shaped portions extending in the vertical direction. The differential mounting cross member is formed in a hat-shaped cross section by a plate-shaped member,
A closing plate that closes the opening of the hat-shaped cross section is attached to the differential mounting cross member,
4. The spare tire support structure for a vehicle according to claim 3, wherein an upper surface of the closing plate constitutes the carrier support portion. A curved rod member whose lower end forms a jack-up point is fixed to an outer position in the vehicle width direction of the concave portion on the lower surface of the rear end cross member,
The spare tire support structure for a vehicle according to any one of claims 4 to 7, wherein an opening area inside the curved portion of the rod member is substantially closed by a lid member.   The cylindrical nut member for fastening an eyebolt is being fixed to the vehicle width direction outer side position of the said concave shape part of the lower surface of the said rear end cross member, Either of the Claims 4-7, 14 characterized by the above-mentioned. 2. A spare tire support structure for a vehicle according to claim 1. A rear bumper face is attached to the rear end cross member,
The rear bumper face is arranged between a pair of side face blocks arranged on the left and right in the vehicle width direction, and a center that is arranged between the pair of side face blocks and wider in the vehicle width direction than the diameter of the spare tire. A face block,
16. The spare tire support structure for a vehicle according to claim 4, wherein the central face block is configured to be removable from the left and right side face blocks. . A cylindrical nut member for fastening an eyebolt is fixed to a vehicle width direction outer side position of the concave portion on the lower surface of the rear end cross member,
17. The vehicle spare according to claim 16, wherein a nut cover portion surrounding a rear side periphery of the opening of the nut member is provided on one of the side face block and the central face block. Tire support structure. A differential device and a differential mounting cross member for mounting the differential device are arranged below the rear floor,
In the spare tire detaching method for a vehicle in which a tire accommodating portion for accommodating a spare tire is provided between the lower surface of the rear floor and the differential mounting cross member,
A rear bumper face is attached to a rear end cross member disposed at the rear part of the rear floor and supporting the rear part of the spare tire,
The rear bumper face is disposed between a pair of side face blocks arranged on the left and right sides in the vehicle width direction, and a center having a width in the vehicle width direction larger than the diameter of the spare tire, between the pair of side face blocks. With a face block,
The central face block is configured to be removable with respect to the left and right side face blocks,
A spare tire detaching method, wherein the central face block is removed from the left and right side face blocks when the spare tire is detached.

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