Summary of the invention
The solution of the present invention proposes in view of the foregoing, is although in the lower section on rear floor its purpose is to provide one kind
Vehicle equipped with differential gear also can not make spare tyre be supported on vehicle rear to the upper space on floor after constriction as far as possible
The spare tyre supporting structure of vehicle and the handling method of spare tyre.
The present invention uses scheme below in order to solve the above problems.
(1) in the spare tyre supporting structure of the vehicle of a scheme of the invention, it is poor which is configured in the lower section on rear floor
Dynamic device, wherein the lower section on floor is configured with the differential mechanism carrying crossbeam for carrying the differential gear after described, described
The lower surface on floor and the differential mechanism are carried with the tire receiving portion for being equipped with receiving spare tyre between crossbeam afterwards.
In this case, standby with being accommodated in the tire receiving portion between crossbeam in the lower surface on rear floor and differential mechanism carrying
Tire.Therefore, although being configured with the vehicle of differential gear in the lower section on rear floor, it can also match in the lower section on rear floor and purchase
Tire.
(2) on the basis of above scheme (1), it is also possible to the top of the tire receiving portion on floor after described
The lower face side in region is equipped with the protrusion for allowing the configuration of the spare tyre.
In this case, spare tyre can be contained in the top position of vehicle with the amount of the setting protrusion on rear floor.
As a result, it can be ensured that the gap of differential gear and ground, and the handling operation of spare tyre is improved simultaneously.
(3) on the basis of above scheme (1) or (2), the lower section for being also possible to the floor after described is equipped with spare wheel carrier,
The spare tyre hanger bearing is able to carry out inclination movement operation, the differential in the handling of the spare tyre by the spare wheel carrier
Device carrying crossbeam has frame supporting part, in the state of the spare wheel carrier inclined handling posture, this supporting part with it is described
Spare wheel carrier abuts to limit the inclination movement of the spare wheel carrier.
In this case, spare tyre is via spare wheel carrier and hanger bearing is in the lower section on rear floor.When dismantling spare tyre, make spare tyre
The one end of frame reduces downwards and tilts spare wheel carrier, in this state pulls down spare tyre from spare wheel carrier.At this point, spare wheel carrier
Inclination movement is limited by being set to the frame supporting part of differential mechanism carrying crossbeam, so even connecing the end of spare wheel carrier
Ground can also maintain spare wheel carrier at the handling posture tilted as predetermined angular.
(4) either in above scheme (1)~(3) on the basis of case, it is also possible to the spare tyre bearing of the vehicle
Structure has rear end floor beam, which is configured at the rear portion on the rear floor and supports the rear portion of the spare tyre, described
The region opposed with the rear upper surface of the spare tyre in the lower surface of end floor beam is equipped with the rear portion for accommodating the spare tyre afterwards
The concave shape portion of a part.
In this case, spare tyre overlaps in the up-down direction with rear end floor beam, therefore spare tyre can be contained in vehicle
More top position.It is accordingly possible to ensure the handling operation of the gap on differential gear and ground and raising spare tyre.
(5) on the basis of above scheme (4), it is also possible to be equipped in the concave shape portion approximately along the spare tyre
Rear shape and support the bearing surface of the spare tyre.
In this case, the wide model of the rear end upper surface of spare tyre can be steadily supported by the bearing surface of rear end floor beam
It encloses.
(6) on the basis of above scheme (5), it is also possible to the differential mechanism described in the ratio of the lower section on the rear floor and takes
Side position is configured with the rear floor crossmember for supporting the rear floor on the front with crossbeam for load, and the spare tyre is by the rear end floor beam
The bearing surface of lower surface, after described end floor beam and it is described after after described between floor crossmember floor lower surface it is direct
It is arranged or the third of the lower surface setting of floor crossmember supports via the second bearing surface of other components setting and after described
Face carries out three-point support.
In this case, spare tyre passes through this 3 points of bearing surface, the second bearing surface, third bearing surface being separated from each other steadily
It is supported on the lower section on rear floor.
(7) on the basis of above scheme (6), the lower section for being also possible to the floor after described is equipped with spare wheel carrier, the spare tyre
The spare tyre hanger bearing is able to carry out inclination movement operation in the handling of the spare tyre by frame, and the spare wheel carrier has:
Mobile jib, in lower side the extending radially outward approximately along the spare tyre of the spare tyre;And secondary bar, with the mobile jib knot
Merging is extended along the direction that the extending direction with the mobile jib intersects, and the mobile jib and the secondary bar are respectively provided with described in bearing
The periphery supporting part of the peripheral part of spare tyre, the periphery supporting part of the mobile jib and the pair adjacent with the periphery supporting part
The interval of the periphery supporting part of bar is set to smaller than the diameter of the spare tyre.
In this case, spare tyre by spare wheel carrier mobile jib and secondary bar bearing and hanger bearing in the lower section on rear floor.At this point,
The peripheral part of spare tyre is supported by mobile jib and the periphery supporting part of secondary bar, but the interval of adjacent periphery supporting part is set to than standby
The diameter of tire is small, therefore in the handling of spare tyre, can prevent spare tyre from falling off between adjacent periphery supporting part.Therefore, exist
In the case where using the structure, spare tyre can be steadily loaded and unloaded from defined direction.
(8) either in above scheme (1)~(7) on the basis of case, it is also possible to the lower section on the floor after described
Ratio described in differential mechanism carrying crossbeam side position is configured with the floor crossmember that is extended along the width of the car out on the front, it is described differential
The front of device is installed on the floor crossmember, and rear portion is installed on the differential mechanism carrying crossbeam, in the differential dress
The rear portion set, than the differential gear main body block upper end position downwards offsettingly be equipped with department of assembly, the department of assembly with it is described
Differential mechanism is carried to be combined with the lower surface of crossbeam.
In this case, the main body block of differential gear can be made to be overlapped above and below the front side of differential mechanism carrying crossbeam to match
It sets.Therefore, in the case where using the structure, the gap between differential gear and ground can be fully ensured.
(9) either in above scheme (1)~(8) on the basis of case, it is also possible to the differential mechanism and carries with horizontal
Beam is shaped generally as U-shaped under vehicle rearview observation.
In this case, the supporting member extended downward is installed respectively with the rear frame in left and right and is propped up in this pair
The case where differential mechanism carrying crossbeam that the lower end erection of bearing member linearly extends, is compared, and number of components can be cut down.Cause
This can be realized the reduction of manufacturing cost in the case where using the structure.
(10) on the basis of above scheme (9), it is also possible to the differential mechanism carrying crossbeam and passes through tabular component shape
As hat-shaped cross-section, the both ends of the vehicle width direction of the differential mechanism carrying crossbeam via other coupling members and and vehicle width
Side on the inside of the vehicle width direction of the rear frame in direction or so combines.
Differential mechanism carrying is shaped generally as U-shaped under vehicle rearview observation with crossbeam, therefore even if differential mechanism is taken
The flange part of the hat-shaped cross-section of load crossbeam is directly welded to the side on the inside of the vehicle width direction of rear frame, due to component interval
Narrow relationship, it is also difficult to properly configure soldering appliance in welding position.However, in the case of such a construction, differential mechanism is taken
The both ends of the vehicle width direction of load crossbeam via other coupling members and with the side on the inside of the vehicle width direction of rear frame
In conjunction with, therefore can ensure the sufficient bond strength between differential mechanism carrying crossbeam and rear frame.
(11) on the basis of above scheme (9) or (10), it is also possible to the differential mechanism carrying crossbeam and passes through plate
Component is formed as hat-shaped cross-section, bending section is equipped on the flange part of the vehicle body rear side of hat-shaped cross-section, the bending section is with front end
The mode in portion towards the direction deviated from from the tire receiving portion is bent.
In this case, the edge of the flange part of the vehicle body rear side of differential mechanism carrying crossbeam passes through bending section direction
The direction deviated from from tire receiving portion, therefore hand is being inserted into when carrying out the handling operation of spare tyre to tire receiving portion, it can keep away
The hand for exempting from operator touches the edge of flange part.
(12) either in above scheme (9)~(11) on the basis of case, it is also possible to the differential mechanism and carries use
The left and right that both ends of the crossbeam with horizontal part extending along the width of the car and from the horizontal part extend towards outside oblique upper
Leg is equipped with the reinforcing rib shape portion vertically extended on the leg of left and right.
In this case, by the punch forming of steel plate can differential mechanism carrying crossbeam easy to form, and pass through reinforcement
Muscle shape portion can ensure the high rigidity of the leg of left and right.
(13) on the basis of above scheme (3), it is also possible to the differential mechanism carrying crossbeam and passes through tabular component shape
As hat-shaped cross-section, in the differential mechanism carrying with being equipped on crossbeam by the occlusion plate of the opening occlusion of the hat-shaped cross-section,
The upper surface of the occlusion plate constitutes the frame supporting part.
In this case, occlusion plate the section of differential mechanism carrying crossbeam is reinforced, and occlude plate prevent mud etc. to
Differential mechanism, which carries in the hat-shaped cross-section with crossbeam, to be immersed.In addition, can make to be easily shaped into arbitrary shape by stamping
The plate (occlusion plate) of shape has the function of that the immersion for preventing mud etc. from immersing into hat-shaped cross-section prevents and the function of frame supporting part.Cause
This can be realized the facilitation of vehicle manufacture in the case where using the structure.
(14) either in above scheme (4)~(7) on the basis of case, it is also possible to the end floor beam after described
The vehicle width direction outer fix in the concave shape portion of lower surface, which is fixed with lower end, becomes the curved bar component of jack up point,
The open area of the inside of the bending section of the bar component is generally occluded by The lid component.
In this case, the bar component for the vehicle body suspention that the vehicle width direction outer fix in tire receiving portion configures is opened
Mouth region domain is generally occluded by The lid component, therefore in the handling of spare tyre, and the hand or article jam that can prevent operator are in vehicle
The case where open area of the bar component of body suspention.
(15) either in above scheme (4)~(7), (14) on the basis of case, it is also possible to horizontal in the rear end
The vehicle width direction outer fix in the concave shape portion of the lower surface of beam is fixed with the tubular for linking lifting bolt fastening
Nut member.
In this case, for the vehicle width direction by the nut member configuration of lifting bolt fastening connection in tire receiving portion
Outer fix, therefore in the handling of spare tyre, it is able to suppress the case where nut member becomes the obstacle of handling operation.
(16) it is also possible on the basis of case described either in above scheme (4)~(7), (14), (15)
Rear bumper front is installed afterwards, the rear bumper front has a counter-lateral quadrents of left and right configuration in the direction of vehicle width on end floor beam
Front block and the center that configuration is between the block of a pair of side front and the width of vehicle width direction is wider than the diameter of the spare tyre
Front block, the center front block are configured to load and unload relative to the side front block of left and right.
In this case, the positive center front block disassembly of rear bumper is only just able to carry out to the handling operation of spare tyre.
It therefore, can and dismantling rear bumper positive a part of (center front block) in the case where using the structure
It is easy to carry out the handling operation of the spare tyre at the lower rear of vehicle.In addition, having dismantled the positive center front of rear bumper
In the case where block, the difference of height of the upper surface rear side on floor after capable of eliminating and be easy to carry out luggage etc. relative to rear floor
Taking-up is put into.
(17) on the basis of above scheme (16), it is also possible to the spill of the lower surface of end floor beam after described
The vehicle width direction outer fix in shape portion is fixed with the nut member of the tubular for linking lifting bolt fastening, in the side
The spiral shell that will be surrounded around the rear side of the opening of the nut member is equipped with either in front block and the center front block
Female cover portion.
In this case, it is surrounded around the rear side of the opening of nut member by the positive nut cover portion of rear bumper, because
This is able to suppress the case where mud or water etc. are immersed to the opening of nut member by nut cover portion.
(18) in the handling method of the spare tyre of the vehicle of a scheme of the invention, which is configured in the lower section on rear floor
Differential gear and the differential mechanism for carrying the differential gear, which carry, uses crossbeam, and the lower surface on floor is taken with the differential mechanism after described
It carries with the tire receiving portion for being equipped with receiving spare tyre between crossbeam, wherein be configured at described in the rear portion on the rear floor and bearing
Rear bumper front is installed on the rear end floor beam at the rear portion of spare tyre, the rear bumper front is formed as such as flowering structure: being had
A counter-lateral quadrents front block of left and right configuration and configuration are between a pair of side front block and vehicle width direction in the direction of vehicle width
The center front block is configured to relative to described in left and right by the width center front block wider than the diameter of the spare tyre in advance
Side front block can load and unload, in the handling of the spare tyre, by the center front block from left and right side front block
Disassembly.
In this case, positive a part of (center front block) by disassembly rear bumper, it can be easy to carry out vehicle
Lower rear at spare tyre handling operation.
According to the solution of the present invention, it is received due to being equipped with tire between the lower surface on rear floor and differential mechanism carrying crossbeam
Appearance portion, so even being to be configured with the vehicle of differential gear in the lower section on rear floor, the upper space on rear floor will not be standby
Tire occupies, and spare tyre can be made to be supported on vehicle rear.
In addition, according to the solution of the present invention, can be easy to carry out the handling operation of the spare tyre at the lower rear of vehicle.
Specific embodiment
Hereinafter, being illustrated based on the drawings one embodiment of the present invention.It should be noted that the suitable position in attached drawing is remembered
It is loaded with the arrow LH for being directed toward the left side side of the arrow FR in the front of vehicle, the arrow UP for the top for being directed toward vehicle, direction vehicle.
Fig. 1 is the figure that the Background Region of the vehicle 1 of embodiment is removed the component of a part and is observed from below.Separately
Outside, Fig. 2 is the figure for eliminating the vehicle 1 of component of a part observe from the rear, and Fig. 3 is that a part is eliminated from the side of left side
Component vehicle 1 figure.
The vehicle 1 of present embodiment is the four-wheel drive from power sources such as engines to front wheels and rear wheels transmitting driving force
Vehicle.A pair of of the rear frame 2 substantially extended along vehicle body front-rear direction is configured in the left and right sides at the rear portion of vehicle 1.In left and right
The front end of rear frame 2 be provided with middle floor crossmember 3 (floor crossmember) extending along the width of the car.
In addition, the middle section in the front-back direction in the rear frame 2 of left and right is provided with rear ground extending along the width of the car
Plate crossbeam 4 is provided with same rear end floor beam 5 extending along the width of the car in the rear end of the rear frame 2 of left and right.In left and right
Rear frame 2, rear floor crossmember 4, is bonded to rear floor 6 on rear end floor beam 5 at middle floor crossmember 3, and rear floor 6 is supported by them.
In addition, being provided between the setting position of rear floor crossmember 4 and rear end floor beam 5 in the rear frame 2 of left and right
The differential mechanism carrying crossbeam 7 being extended along the width of the car out.As shown in Fig. 2, differential mechanism carrying is observed with crossbeam 7 in vehicle rearview
Under be formed as the substantially U-shaped that middle section is recessed downwards.Therefore, in the vehicle width direction in differential mechanism carrying with crossbeam 7
It entreats and is equipped with spatial portion between region and rear floor 6.The spatial portion constitutes tire receiving portion 8.Via spare tyre in tire receiving portion 8
Frame 51 and contain spare tyre 50.
It is configured in the lower section of the middle section on rear floor 6 and distributes the rear-wheel of the power of the driving sources such as engine to the left and right
And the differential gear 9 of the rear-wheel transmitted.
Fig. 4 is the figure of the equipped section of differential gear 9 from the right obliquely downward in rear portion, and Fig. 5 is the section V-V indicated with Fig. 4
The figure in corresponding section.
Differential gear 9 is fixed under differential mechanism carrying crossbeam 7 via a pair of of department of assembly 10 with pooling feature
Surface.Differential gear 9 includes the main body block 11 in internal storage differential attachment;And it is extended at the rear portion of main body block 11
Back hitch block 12.The transmission shaft (not shown) of driving transmitting is linked in the front surface center of main body block 11.In addition,
The side of the left and right of main body block 11 is linked with the axle of rear-wheel (not shown).
Fig. 6 is the perspective view that vehicle 1 is splitted to expression at the VI-VI section of Fig. 3, and Fig. 7 is to configure vehicle 1
There is the schematical cross-sectional view substantially splitted along vehicle width direction at the differential mechanism carrying part of crossbeam 7.
As shown in these figures, it is standby to be formed with permission for the lower face side of the upper area of the tire receiving portion 8 in rear floor 6
The protrusion 13 of the configuration of tire 50.Protrusion 13 under overlook view become approximately along spare tyre 50 peripheral shape substantially
The mode of circular shape swells middle section upwards.Other parts of the tire receiving portion 8 relative to rear floor 6 as a result,
The amount of protrusion 13 is expanded upwards.
Fig. 8 be remove differential mechanism carrying crossbeam 7 and from the right obliquely downward in rear portion the Background Region of vehicle 1 figure, Fig. 9
It is the figure for equally eliminating the Background Region for observing from below vehicle 1 of differential mechanism carrying crossbeam 7.
Spare wheel carrier 51 has: in the mobile jib 52 that the lower side of spare tyre 50 is substantially extended along the diametrical direction of spare tyre 50;With
And the pair extended in conjunction with the extending direction substantial middle of mobile jib 52 along the direction that the extending direction with mobile jib 52 intersects
Bar 53.
Mobile jib 52 and secondary bar 53 are formed by metal material, and are mutually welded fixation in cross part.In mobile jib 52 and secondary bar
The ora terminalis of the two sides of 53 extending direction is formed with the periphery supporting part for bending and supporting upwards the peripheral part of spare tyre 50
52a、53a。
The end of the extending direction of the periphery supporting part 52a of side is integrally formed with and is bent into substantially U mobile jib 52 at one end
The pivotal bearing part 52b of shape.Before pivotal bearing part 52b can rotatably supported on rear floor 6 via support bracket 14
The lower surface in portion region.After spare wheel carrier 51 can be supported on to inclination movement centered on the pivotal bearing part 52b of mobile jib 52
The lower surface on floor 6.
In addition, being integrally formed in the end of the extending direction of the periphery supporting part 52a of the another side of mobile jib 52 curved
It is converted into the fastener 52c of substantially U shape.Metal card with insertion slit 15a is integrally installed on fastener 52c
Only plate 15.Fastener 52c can be locked to the rear end floor beam 5 of body tail via not androgynous fixed link 16.
As shown in figure 8, fixed link 16 is formed with locking hook 16a in upper end, and locking is screwed in lower end
Bolt 17.The locking hook 16a of fixed link 16 is capable of the mounting bracket 18 of the rear surface installation of hanger bearing Yu Hou end floor beam 5.
Locking bolt 17 is screwed into the state of by inserting fixed link 16 in the insertion slit 15a of locking plate 15, thus by mobile jib
52 fastener 52c is locked to body tail.Specifically, spare tyre 50 to be laterally placed in the top of spare wheel carrier 51, at this
It is screwed by tool by bolt 17 is engaged under state.As a result, by the middle section of spare wheel carrier 51 by floor 6 backward of spare tyre 50
Lower face side compress in the state of, the fastener 52c of mobile jib 52 is constrained via fixed link 16 by rear end floor beam 5.
Here, as shown in figure 9, the pivotal bearing part 52b of one end can rotatably supported on rear floor 6 in mobile jib 52
The central portion of ratio vehicle width direction be biased to the position in left side, the fastener 52c of another side is locked to the ratio vehicle width of rear end floor beam 5
The central portion in direction is biased to the position on right side.Therefore, mobile jib 52 obliquely prolongs relative to the central axis of the vehicle width direction of vehicle body
It stretches out.Secondary bar 53 is in conjunction with the substantially central portion of the extending direction of mobile jib 52.The tire centerline of spare tyre 50 is located at secondary bar 53 and master
The top of the engaging portion of bar 52.As shown in figure 9, secondary bar 53 vehicle body look up observation under, with the engaging portion combined with mobile jib 52
Centered on and be bent to form.The bending in order to avoid from vehicle body rear load and unload spare tyre 50 when secondary bar 53 periphery supporting part 53a
Interfere with spare tyre 50 and is arranged.In the case where secondary bar 53 of present embodiment, as shown in figure 9, relative to secondary bar 53 and mobile jib
52 in conjunction with engaging portion and the extension in the left side of secondary bar 53 bent in a manner of extending along the width of the car.
But the interval L1 of the periphery supporting part 52a of mobile jib 52 and the periphery supporting part 53a of secondary bar 53 adjacent thereto
(referring to Fig. 9) is set to smaller than the diameter D of spare tyre 50 (referring to Fig. 9).
Figure 10 is the figure for eliminating spare wheel carrier 51 and spare tyre 50 and observing from below the Background Region of vehicle 1, Figure 11 be
The partial cross-sectional perspective view for the vehicle 1 splitted at the XI-XI section of Fig. 8.
As shown in Figure 10, Figure 11, the region opposed with the rear upper surface of spare tyre 50 in the lower surface of rear end floor beam 5
The concave shape portion 19 of a part equipped with the rear portion that is in a concave shape and accommodating spare tyre 50 that is recessed upwards.Concave shape portion 19 is with substantially
Be formed as concave curve form along the mode of the shape of the upper half of the rear portion side of spare tyre 50.The inner surface in concave shape portion 19
The bearing surface 19a that upper surface as the posterior central region to spare tyre 50 is supported.It should be noted that in this embodiment party
In the case where formula, as shown in Fig. 2, Fig. 8, the whole region of the middle section of the lower surface of rear end floor beam 5 is recessed into recessed upwards
Shape.
In addition, as shown in fig. 6, a part in the lower surface on rear floor 6 is equipped with metal tire support plate 20.Wheel
Tire support plate 20 is mounted on the inclined of the vehicle width direction between in the lower surface on rear floor 6, rear end floor beam 5 and rear floor crossmember 4
Position to the right.Tire support plate 20 has the bearing surface 20a (the supported to the upper surface that the rear portion of spare tyre 50 is kept right
Two bearing surfaces).Bearing surface 20a is located at the upper side for the setting unit that differential mechanism is carried with crossbeam 7.It should be noted that in this reality
In the case where applying mode, bearing surface (the second bearing surface) is set to rear floor via the tire support plate 20 as different component
6 lower surface, but bearing surface (the second bearing surface) can also be directly arranged at the lower surface on rear floor 6.
In addition, the lower surface of the position on the left of the deviation of the vehicle width direction of rear floor crossmember 4 is formed as to after spare tyre 50
The bearing surface 4a (third bearing surface) that the upper surface that portion keeps left is supported.Spare tyre 50 via spare wheel carrier 51 and hanger bearing in
Afterwards when the lower section on floor 6, the branch of the bearing surface 19a of rear end floor beam 5, the bearing surface 20a of tire support plate 20 and rear floor crossmember 4
Bearing surface 4a carries out three-point support to the upper surface of spare tyre 50.
Figure 12 is the cross-sectional view of the XII-XII line along Fig. 4 of differential mechanism carrying crossbeam 7.
As shown in Fig. 4, Figure 12, differential mechanism carrying crossbeam 7 is formed as big under vehicle rearview observation as described above
U-shaped is caused, is extended with horizontal part 7A extending along the width of the car and from the both ends of horizontal part 7A towards outside oblique upper
The leg 7B of left and right.In addition, differential mechanism carrying is formed with crossbeam 7 by metal tabular component, and extending direction is substantially whole
The section in a region is formed as hat-shaped cross-section.It is equipped in the opening of the hat-shaped cross-section of the horizontal part 7A in center by metal material structure
At occlusion plate 21.Plate 21 is occluded to occlude the opening of the hat-shaped cross-section of horizontal part 7A.In addition, being fixed on vehicle body in spare wheel carrier 51
In the state of, occlusion plate 21 has predetermined distance with spare wheel carrier 51 and separates, when spare wheel carrier 51 becomes inclined handling posture,
Occlusion plate 21 is abutted with the upper surface of spare wheel carrier 51.In the state of 51 inclined handling posture of spare wheel carrier, the upper of plate 21 is occluded
Surface is abutted with spare wheel carrier 51, is thus construed as limiting the frame supporting part of the inclination movement of spare wheel carrier 51.
In addition, being formed with vertically side on leg 7B of the differential mechanism carrying with the left and right of crossbeam 7 as shown in Fig. 4, Figure 12
To the reinforcing rib shape portion 22 of extension.The middle section in the section of the leg 7B in reinforcing rib shape portion 22 is on the outside of vehicle width direction
Bulging.The leg 7B of left and right realizes by reinforcing rib shape portion 22 continuous along the vertical direction flexural rigidity, torsional rigid
It improves.
In addition, corresponding rear side of the end of each leg 7B of differential mechanism carrying crossbeam 7 by welding etc. and left and right
The bottom wall of frame 2 and the side wall on the inside of vehicle width direction combine.But the as shown in fig. 6, ora terminalis of the extending direction in each leg 7B
The inboard portion of hat-shaped cross-section metal link plate 23 (coupling member) is installed, which is welded in corresponding
Side wall on the inside of the vehicle width direction of rear frame 2.
Figure 13 is the figure of the part corresponding with the part XIII of Fig. 2 of the vehicle 1 from the right obliquely downward in rear portion.
As shown in figure 13, it is equipped on the flange part 7f of the vehicle body rear side of the differential mechanism carrying hat-shaped cross-section of crossbeam 7
The curved bending section 24 in such a way that front end is towards the direction deviated from from tire receiving portion 8.The flange of vehicle body rear side as a result,
The direction that the edge direction of portion 7f deviates from from tire receiving portion 8.
In addition, the configuration of differential gear 9 is on the lower section of the equipped section of spare wheel carrier 51 above-mentioned, the right side of the front side of main body block 11
Portion is supported on the lower surface of middle floor crossmember 3 via support rod 25.In addition, the back hitch block 12 of differential gear 9 is to differential
Device is carried to be extended with the lower section of the horizontal part 7A of crossbeam 7, and by department of assembly 10 with the lower surface of horizontal part 7A along vehicle
Two positions connection of wide direction separation.The left and right that the lower surface of back hitch block 12 and differential mechanism carrying crossbeam 7 is linked
The configuration of department of assembly 10 in the position that biases downwards of upper end position of the main body block 11 than differential gear 9.
Figure 14 is the figure of the part corresponding with the part XIV of Fig. 2 of the vehicle 1 from the right obliquely downward in rear portion.
As shown in figure 14, the lower surface of rear end floor beam 5 concave shape portion 19 left side vehicle width direction outer fix, lead to
It crosses welding etc. and is fixed with curved bar component 26 of the lower end as jack up point.Bar component 26 from under rear end floor beam 5
The engaging portion that surface combines bends to substantially U-shaped towards vehicle body lower section, and the lower end of bending section becomes jack up point.In bar
The The lid component 27 that the open area 26a of the inside of bending section is generally occluded is installed on component 26.
Figure 15 is the XV direction view of Fig. 1 of rear end floor beam 5.
As shown in figure 15, the vehicle width direction outer fix on the right side in the concave shape portion 19 of the lower surface of rear end floor beam 5 is welded
The nut member 29 for being fixed with tubular is connect, the nut member 29 is for fastening the lifting bolt 28 used when vehicle is drawn etc.
Connection.Nut member 29, which has, to be carved internal thread and is open 29a, and the nut member 29 is with opening 29a towards vehicle body rear side
Mode be fixed on rear end floor beam 5.
Figure 16 is the rearview in the rear bumper front 30 of the back-surface side installation of rear end floor beam 5.
Rear bumper front 30 has counter-lateral quadrents front block 30L, 30R for left and right configuration in the direction of vehicle width and in an opposite side
The center front block 30C configured between portion front block 30L, 30R.Center front block 30C is configured to relative to the side controlled just
Block 30L, 30R can be loaded and unloaded in face.Side front block 30L, 30R and center front block 30C their major part are by resin material
It is formed.Side front block 30L, 30R of left and right are shaped generally as L-shaped under backsight observation, configure under the rear portion of vehicle body
The corner part of portion side.In contrast, center front block 30C is formed as horizontally extending linear under backsight observation.
The width of the vehicle width direction of center front block 30C is set to the diameter D wide than spare tyre 50.It, will in the handling operation of spare tyre 50
Center front block 30C disassembly can be easy to be loaded and unloaded from there through the opening between side front block 30L, 30R of left and right
Operation.
Center front block 30C is formed in such a way that side front block 30L, 30R of appearance and left and right become the same face, and
It is fastened by bolts and links or be fixedly clamped etc. and be detachably installed on rear end floor beam 5.
Figure 17 is the rearview of the side front block 30R on right side.
As shown in figure 17, the end on the inside of the vehicle width direction of side front block 30R is extended and has and center front block
The snap-latch piece 31 of the side end engaging on the right side of 30C.Nut cover portion 32 is formed on snap-latch piece 31, the nut cover portion 32
It will be surrounded around the rear side of the opening 29a of the fixed nut member 29 in the lower surface of rear end floor beam 5.In nut cover portion 32
The corresponding position of the center front block 30C Chong Die with the rear side of the nut cover portion 32 is formed with for nut member 29
The 29a that is open is inserted into bolt insert opening 32a, 30Ca of lifting bolt 28.
Next, 8, Figure 19 referring to Fig.1, illustrate the method for the handling of the spare tyre 50 of the vehicle 1 of present embodiment.Figure 18 is
The amplification stereogram of the vehicle rear of operation for the spare wheel carrier 51 when illustrating the disassembly of spare tyre 50, Figure 19 is for illustrating it
The perspective view of the vehicle rear of the disassembly sequence of spare tyre 50 afterwards.
It should be noted that spare tyre 50 is laterally lied down and is positioned in the state of lower section of the hanger bearing in rear floor 6
On spare wheel carrier 51.At this point, the rear end of spare wheel carrier 51 engages via fixed link 16 and is fixed on rear end floor beam 5.
From the state dismantle spare tyre 50 in the case where, firstly, only by the center front block 30C in rear bumper front 30 from
Vehicle body disassembly.Then, as shown in Figure 18 (A), the locking bolt 17 being screwed into the lower end of fixed link 16 is relaxed by tool,
Under the state, as shown in Figure 18 (B), tilt fixed link 16, by the fastener 52c of spare wheel carrier 51 and the engaging of fixed link 16
It releases.Then, fixed link 16 is suitably dismantled from mounting bracket 18.
When dismantling the fastener 52c of spare wheel carrier 51 from body side, spare wheel carrier 51 is with the pivotal bearing part 52b of front end side
Centered on, become lateral attitude using rear end side as lower section as shown in Figure 19 (A).At this point, spare wheel carrier 51 holds gear spare tyre 50
Weight and significantly to tilt, but when spare wheel carrier 51 tilts to certain angle, the lower surface of spare wheel carrier 51 and differential mechanism are carried
It is abutted with the top (upper surface of occlusion plate 21) of crossbeam 7.As a result, the tilt angle of spare wheel carrier 51 is restricted to certain angle
Degree.
Operator is inserted into tire receiving portion 8 from vehicle body rear by hand in this state, as shown in Figure 19 (B), along
The upper surface of spare wheel carrier 51 pulls down spare tyre 50 to the lower rear of vehicle 1.Later, operator carries out the replacement operation of spare tyre 50
Deng.
In addition, by the lower section receiving on floor 6 backward of spare tyre 50, it is suitable by the disassembly with above-mentioned spare tyre 50
The opposite sequence of sequence is positioned on spare wheel carrier 51, and the state is kept to lift at the rear portion of spare wheel carrier 51 upwards, and using solid
Vehicle body is fixed in the rear portion of spare wheel carrier 51 by fixed pole 16.Then, the center front block 30C in rear bumper front 30 is installed on vehicle
Body.
As described above, the spare tyre supporting structure of present embodiment is carried in the lower surface on rear floor 6 and differential mechanism with horizontal
Tire receiving portion 8 is equipped between beam 7.Therefore, even the four-wheel drive vehicle of the lower section configuration differential gear 9 on rear floor 6,
The upper space on floor 6 will not be occupied by spare tyre 50 afterwards, spare tyre 50 can be supported on vehicle rear.
In the spare tyre supporting structure of present embodiment, the following table of the upper area of the tire receiving portion 8 in rear floor 6
Surface side is equipped with the protrusion 13 for allowing the configuration of spare tyre 50.Therefore, can with rear floor 6 setting protrusion 13 amount and will be standby
Tire 50 is contained in the top position of vehicle.Therefore, using the structure, can significantly ensure differential gear 9 with
The gap on ground, and the handling operation of spare tyre 50 is improved simultaneously.
In addition, the spare tyre supporting structure of present embodiment is equipped on the top of differential mechanism carrying crossbeam 7 supplies inclined dress
Unload the frame supporting part (occlusion plate 21) that the spare wheel carrier 51 of posture abuts.Therefore, in the handling of spare tyre 50, pass through frame supporting part
(occlusion plate 21) can limit the tilt angle of spare wheel carrier 51.Therefore, using the structure, even if not making spare wheel carrier
51 end ground connection, can also maintain spare wheel carrier 51 at the handling posture tilted as angle appropriate.
In addition, in the spare tyre supporting structure of present embodiment, in the lower surface of the rear end floor beam 5 of vehicle body and spare tyre
The opposed region of 50 rear upper surface is equipped with the concave shape portion 19 for accommodating a part at rear portion of spare tyre 50.Therefore, spare tyre 50
A part overlap in the up-down direction with rear end floor beam 5, spare tyre 50 can be contained in the more top position of vehicle.Cause
This, using the structure, it can be ensured that the gap between differential gear 9 and ground, to further increase spare tyre
Handling operation.
Moreover, in the present embodiment, being formed in the concave shape portion 19 of rear end floor beam 5 approximately along the rear portion of spare tyre 50
Shape and the bearing surface 19a that the rear portion of spare tyre 50 is supported.Therefore, in the case where using the structure, pass through rear end
The bearing surface 19a of crossbeam 5 can steadily support the wide range near the rear end of spare tyre 50.
In addition, being equipped with the bearing surface in the lower surface of rear end floor beam 5 in the spare tyre supporting structure of present embodiment
19a, and the lower surface of the lower surface of the tire support plate 20 between rear end floor beam 5 and rear floor crossmember 4 and rear floor crossmember 4
It is respectively equipped with bearing surface 20a, 4a, three-point support is carried out by the upper surface of above-mentioned bearing surface 19a, 20a, 4a to spare tyre 50.
Therefore, in the case where using the structure, spare tyre 50 can steadily be supported in the lower section on rear floor 6.
In addition, the spare tyre supporting structure of present embodiment is formed as such as flowering structure: the mobile jib 52 and secondary bar 53 of spare wheel carrier 51
It combines with intersecting, and spare tyre 50 is supported by the periphery supporting part 52a of mobile jib 52 and the periphery supporting part 53a of secondary bar 53
Peripheral part.Also, the periphery supporting part 52a of mobile jib 52 and the periphery bearing of the secondary bar 53 adjacent with the periphery supporting part 52a
The interval L1 of portion 53a is set to smaller than the diameter D of spare tyre 50.Therefore, in the case where the spare tyre supporting structure of present embodiment,
The peripheral part of spare tyre 50 is supported by mobile jib 52 and periphery supporting part 52a, 53a of secondary bar 53, but since adjacent periphery supports
The interval L1 of portion 52a, 53a are smaller than the diameter D of spare tyre 50, therefore in the handling operation of spare tyre 50, can prevent spare tyre 50 from
It falls off between adjacent periphery supporting part 52a, 53a.It therefore, can be from defined direction in the case where using the structure
(rear of vehicle 1) steadily loads and unloads spare tyre 50.
In addition, in the spare tyre supporting structure of present embodiment, during the main body block 11 of the toe lateral of differential gear 9 is installed on
Floor crossmember 3, and back hitch block 12 is installed on differential mechanism carrying crossbeam 7, on back hitch block 12, than main body block 11
Upper end position downwards offsettingly be equipped with department of assembly 10.Also, the following table for using crossbeam 7 is carried by department of assembly 10 and differential mechanism
Face combines, so that the back hitch block 12 of differential gear 9 and differential mechanism carry and linked with crossbeam 7.Therefore, differential gear can be made
9 main body block 11 overlaps above and below the differential mechanism carrying front side of crossbeam 7.Therefore, the case where using the structure
Under, it can fully ensure the gap between differential gear 9 and ground.
Moreover, in the spare tyre supporting structure of present embodiment, differential mechanism carrying with crossbeam 7 under vehicle rearview observation with
Mode as substantially U-shaped is formed.Therefore, the supporting member that extends downward is installed simultaneously on the rear frame 2 of left and right
It compares, can cut down the case where the lower end of above-mentioned supporting member sets up the differential mechanism carrying crossbeam linearly extended
Number of components.Therefore, in the case where using the structure, it can be realized the reduction of manufacturing cost.
In addition, differential mechanism carrying crossbeam 7 is formed as by tabular component in the spare tyre supporting structure of present embodiment
Hat-shaped cross-section, the both ends of the differential mechanism carrying vehicle width direction of crossbeam 7 vehicle width side with rear frame 2 via link plate 23
Side inwardly combines.The differential mechanism carrying of present embodiment is shaped generally as U-shaped under vehicle rearview observation with crossbeam 7
Shape, therefore, it is difficult to the flange part of hat-shaped cross-section is fixed on the side on the inside of the vehicle width direction of rear frame 2 by spot welding etc..
That is, difficult to arrange for by the side of the flange part of hat-shaped cross-section and rear frame 2 in the vehicle width direction inboard portion of rear frame 2
The soldering appliance of face welding.However, in this case, differential mechanism carries the both ends of the vehicle width direction with crossbeam 7
Portion can ensure that differential mechanism carries and use via link plate 23 and in conjunction with the side on the inside of the vehicle width direction of rear frame 2
Sufficient bond strength between crossbeam 7 and rear frame 2.
In addition, in the spare tyre supporting structure of present embodiment, in the differential mechanism carrying vehicle body of the hat-shaped cross-section of crossbeam 7
The flange part 7f of rear side is equipped with the curved bending section in such a way that front end is towards the direction deviated from from tire receiving portion 8
24.Therefore, the edge of the flange part 7f of the vehicle body rear side of differential mechanism carrying crossbeam 7 is by bending section 24 towards from tire
The direction that receiving portion 8 deviates from.Therefore, use the structure in the case where, operator by hand be inserted into tire receiving portion 8 and into
When the handling operation of row spare tyre 50, the case where hand of operator touches the edge of flange part 7f can be avoided.
Moreover, differential mechanism carrying crossbeam 7, which has, to be extended along the width of the car in the spare tyre supporting structure of present embodiment
Horizontal part 7A and the left and right extended from the both ends of horizontal part 7A towards outside oblique upper leg 7B, left and right leg 7B
It is equipped with the reinforcing rib shape portion 22 vertically extended.In the case where using the structure, pass through striking out for steel plate
Type can differential mechanism carrying crossbeam 7 easy to form, and by reinforcing rib shape portion 22 can ensure left and right leg 7B height
Rigidity.
In addition, differential mechanism carrying crossbeam 7 is formed by tabular component in the spare tyre supporting structure of present embodiment
For hat-shaped cross-section, and in a manner of the opening for occluding the hat-shaped cross-section on differential mechanism carrying crossbeam 7 installation occlusion plate 21.And
And the upper surface for occluding plate 21 is construed as limiting the frame supporting part of the inclination movement of spare wheel carrier 51.It therefore, can be by occluding plate 21
Reinforce with the section of crossbeam 7 to differential mechanism carrying, and prevent mud simultaneously etc. the hat shape for being immersed in differential mechanism carrying crossbeam 7
In section.In addition, in the present embodiment, making through stamping plate (the occlusion plate for being easily shaped into arbitrary shape
21) having the function of the immersion for preventing mud etc. from immersing into hat-shaped cross-section prevents and the function of frame supporting part, therefore can be realized vehicle
The facilitation of the manufacture in portion behind.
In addition, the vehicle in the spare tyre supporting structure of present embodiment, in the concave shape portion 19 of the lower surface of rear end floor beam 5
Wide direction outer fix, which is fixed with lower end, becomes the curved bar component 26 of jack up point, and the bending section of bar component 26
The open area 26a of inside is generally occluded by The lid component 27.Therefore, in the handling operation of spare tyre 50, operation can be prevented
The hand or article jam of person is in the situation in the open area 26a of bar component 26.
Moreover, in the case where the spare tyre supporting structure of present embodiment, in the concave shape portion of the lower surface of rear end floor beam 5
19 vehicle width direction outer fix is fixed with the nut member 29 of the tubular for linking the fastening of lifting bolt 28.Therefore, exist
When the handling operation of spare tyre 50, it is able to suppress the case where nut member 29 becomes the obstacle of handling operation.
In addition, being formed as in the spare tyre supporting structure of present embodiment such as flowering structure: being installed on rear end floor beam 5
Rear bumper front 30 has counter-lateral quadrents front block 30L, 30R for left and right configuration in the direction of vehicle width and in a counter-lateral quadrents front block
The center front block 30C configured between 30L, 30R.Also, the width of the vehicle width direction of center front block 30C forms to compare spare tyre
50 diameter D wide, and center front block 30C is configured to load and unload relative to side front block 30L, 30R of left and right.Cause
The center front block 30C disassembly in rear bumper front 30, is only just able to carry out the handling operation of spare tyre 50 by this.Therefore, it is adopting
In the case where with the structure, only center front block 30C is dismantled, it will be able to be easy to carry out spare tyre in the lower rear of vehicle
50 handling operation.
In addition, the vehicle in the spare tyre supporting structure of present embodiment, in the concave shape portion 19 of the lower surface of rear end floor beam 5
Wide direction outer fix is fixed with nut member 29, is equipped on the side front block 30R of a side by the opening of nut member 29
The nut cover portion 32 surrounded around the rear side of 29a.Therefore, mud or water etc. are able to suppress by nut cover portion 32 and immerse nut structure
The case where opening 29a of part 29.
It should be noted that nut cover portion 32 can be not provided with being set to center front block in side front block 30R
30C。
Moreover, in the handling method of the spare tyre 50 of present embodiment, the center front block 30C in rear bumper front 30 is pre-
First it is configured to load and unload relative to side front block 30L, 30R of left and right, in the handling of spare tyre 50, by center front block
Side front block 30L, 30R disassembly of the 30C from left and right.
In the case where using the handling method of spare tyre 50 of present embodiment, by the way that center front block 30C is dismantled
And it can easily be done the handling operation of the spare tyre 50 at the lower rear of vehicle 1.
It should be noted that the present invention is not limited to above-mentioned embodiment, within the scope of its spirit can
Enough carry out various design alterations.For example, the vehicle of above-mentioned embodiment is the driven four-wheel drive vehicle of front wheels and rear wheels,
But as long as being to be configured with the vehicle of differential gear in the lower section on rear floor 6, it is also possible to rear wheel drive vehicle.