JP2019073210A - Joint part structure for cabin part and deck part of cab-over type vehicle - Google Patents

Abstract

To effectively disperse stress from a deck part during travel toward a cabin part and to reinforce a wheel arch part and a door opening bent part.SOLUTION: A cab-over type vehicle 1 has a cabin part 2 and a deck part 3, a side part on a vehicle rear side of the cabin part 2 being provided with a closed cross-sectional rear pillar 24 in a vehicle vertical direction, a side part on a vehicle rear side of the deck part 3 being provided with a deck side pillar 4 in the vehicle vertical direction. Provided in the rear pillar 24 is a first reinforcement 5 that extends from a rear end part 24a of the rear pillar 24 to a wheel arch part 26 of the cabin part 2 and that connects the rear end part 24a of the rear pillar 24 and the wheel arch part 26. The rear part 5b of the first reinforcement 5 is joined to the rear end part 24a of the rear pillar 24 and the deck side pillar 4. A joint part of the first reinforcement 5, rear pillar 24, and deck side pillar 4 is composed as a first joint part D1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a joint structure of a cabin and a deck of a cab-over type vehicle.

Heretofore, cab-over type vehicles such as trucks have had a problem in that stress is generated at the junction between the cabin and the deck due to the vibration of the deck (loading platform) during traveling. As a countermeasure, for example, there is a structure disclosed in Patent Document 1.
In the structure of this patent document 1, a deck front panel is provided at the vehicle rear of the cabin back panel, and a deck mount bracket is provided in the vicinity of upper end portions on both left and right sides of the deck front panel in the vehicle width direction. Then, the deck front panel and the cabin back panel are joined to each other above the deck floor panel via the deck mounting bracket.

Patent No. 3979177 gazette

  However, the above-described conventional joint structure is not sufficient as a stress transfer structure because stress dispersion is biased to the vehicle upper side, and there is room for improvement.

  The present invention has been made in view of such a situation, and an object thereof is to effectively disperse the stress from the deck portion during traveling to the cabin portion side, and to make the wheel arch portion and the door opening bent portion It is an object of the present invention to provide a junction structure of a cabin portion and a deck portion of a cab-over type vehicle which can be reinforced.

  In order to solve the problems of the above-mentioned prior art, the present invention has a cabin portion and a deck portion, and a rear pillar having a closed cross-sectional shape is along the vehicle vertical direction on the vehicle rear side of the cabin portion. In the joint structure of a cabin portion and a deck portion of a cab-over type vehicle, provided with deck side pillars provided along the vehicle vertical direction on the side portion on the vehicle front side of the deck portion, in the rear pillar A first reinforcement is provided extending in the vehicle longitudinal direction from the rear end of the rear pillar to the wheel arch of the cabin, and connecting the rear end of the rear pillar and the wheel arch to each other. The rear portion of the reinforcement is joined to the rear end portion of the rear pillar and the deck side pillar, and the first reinforcement, the rear pillar, and the rear pillar Junction Kkisaidopira is configured as a first joint.

As described above, the joint structure of the cabin portion and the deck portion of the cab-over type vehicle according to the present invention has a cabin portion and a deck portion, and the side portion on the vehicle rear side of the cabin portion has a closed cross-sectional shape A rear pillar is provided along the vertical direction of the vehicle, and a deck side pillar is provided along the vertical direction of the vehicle on a side portion on the vehicle front side of the deck portion, and a rear end of the rear pillar is disposed in the rear pillar A first reinforcement extending from the rear portion of the rear portion of the rear pillar to the wheel arch portion extending from the rear portion to the wheel arch portion of the cabin portion, the rear portion of the first reinforcement being The joint portion of the first reinforcement, the rear pillar and the deck side pillar is joined to the rear end portion of the rear pillar and the deck side pillar, It is configured as a coupling section.
Therefore, in the joint structure of the cabin portion and the deck portion of the cab-over type vehicle according to the present invention, the deck side pillar, the rear pillar, and the first ring are generated when the stress generated during traveling is input from the deck portion to the cabin portion. The force transmitted from the deck portion to the wheel arch portion of the cabin portion via the forcement can efficiently disperse the stress from the deck portion to the cabin portion. Moreover, in the joint structure of the present invention, the first reinforcement has an effect of reinforcing the wheel arch portion itself, so that damage to the cabin portion at the time of a side collision or a rear collision can be reduced. it can.

FIG. 1 is a side view of a rear pillar of a cab-over type vehicle to which a joint structure of a cabin portion and a deck portion according to an embodiment of the present invention is applied, viewed from the vehicle interior side with a partial cross section. It is a side view which expands and shows the Z section of FIG. It is the sectional view on the AA line in FIG. It is the BB sectional drawing in FIG. FIG. 5 is a side view illustrating the vicinity of a second joint as viewed from the passenger compartment side, with the rear pillar of the cab-over type vehicle to which the joint structure of the cabin and the deck according to the embodiment of the present invention is applied. . It is a side view which expands and shows the W section of FIG. FIG. 7 is a side view of the rear pillar of FIG. 6 as viewed from the outer side of a passenger compartment. It is the CC sectional view taken on the line in FIG. It is the DD sectional view taken on the line in FIG.

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.
1 to 4 show a joint structure of a cabin and a deck of a cab-over type vehicle according to an embodiment of the present invention. In the drawings, the arrow Fr direction indicates the front of the vehicle, the arrow I indicates the inside of the vehicle, the arrow O indicates the outside of the vehicle, and the arrow U indicates the upper side of the vehicle. Further, the arrow X direction indicates the vehicle width direction, and the arrow Y direction indicates the vehicle longitudinal direction.

As shown in FIG. 1, a cab-over type vehicle 1 to which a joint structure according to an embodiment of the present invention is applied includes a cabin 2 provided with a cab and a deck (load carrier) 3 for loading luggage. It is a truck that has. The cabin portion 2 is disposed on the vehicle front side of the cab-over type vehicle 1, and the deck portion 3 is disposed on the vehicle rear side of the cabin portion 2.
The cabin portion 2 of the present embodiment includes a side body panel 21 forming a side surface portion, a cabin back panel 22 forming a back surface portion, a rear floor panel 23 forming a lower surface portion, and the like. Further, a rear pillar 24 with a closed cross-sectional shape that constitutes a part of the side body panel 21 is provided along the vehicle vertical direction on the side portion on the vehicle rear side of the cabin portion 2. And the door opening part 25 enclosed by the side body panel 21 is provided in the side part of the cabin part 2, and this door opening part 25 is opened and closed by the door which is not shown in figure. Furthermore, below the rear floor panel 23, there is provided a wheel arch 26 that covers the upper side of the front tire (not shown).

  On the other hand, as shown in FIGS. 1 to 4, the deck portion 3 of the present embodiment includes a deck side panel 31 forming a side surface portion on the vehicle front side, a deck floor panel 32 forming a lower surface portion, etc. A deck side pillar 4 is provided along the vehicle vertical direction on the lower side of the deck portion 3 on the vehicle front side. The rear floor panel 23 and the deck floor panel 32 are disposed at substantially the same height position in a vehicle side view. The lower end 4 a of the deck side pillar 4 is disposed to extend below the rear floor panel 23 and the deck floor panel 32 in the vehicle, and is joined to the rear pillar 24 so as to straddle the rear floor panel 23. Thus, the load applied to the cabin portion 2 is dispersed to the deck portion 3. Moreover, when a load due to a side collision is applied to the rear pillar 24 located below the rear floor panel 23, the lower part of the rear pillar 24 located below the rear floor panel 23 is prevented from entering the cabin 2 side. A passenger protection effect at the time of a crash can be obtained.

Further, the deck side pillar 4 of the present embodiment includes the deck side pillar outer panel 41, the deck side pillar inner panel 42, the deck side pillar reinforcement 43, and the deck side pillar lower panel 44 which are joined to each other. The deck side pillar outer panel 41 is formed to have a shorter dimension in the vehicle vertical direction than the deck side pillar inner panel 42, and the lower end portion of the deck side pillar outer panel 41 is higher than the lower end portion of the deck side pillar inner panel 42. And the upper end portions of the deck side pillar outer panel 41 and the deck side pillar inner panel 42 are arranged at the same height position.
The deck side pillar reinforcement 43 and the deck side pillar lower panel 44 are located between the deck side pillar outer panel 41 and the deck side pillar inner panel 42, and the dimension in the vertical direction of the vehicle is formed short. The lower ends of the deck side pillar reinforcement 43 and the deck side pillar lower panel 44 are arranged at the same height as the lower end of the deck side pillar inner panel 42.

As shown in FIG. 3, the rear pillar 24 of the present embodiment is formed in a closed cross-sectional shape having a space inside by welding front and rear end portions of the rear pillar outer panel 24A and the rear pillar inner panel 24B by welding. In the rear pillar 24, as shown in FIGS. 1 to 4, the rear end 24 a of the rear pillar 24 extends from the rear end 24 a of the rear pillar 24 to the wheel arch 26 of the cabin 2. A first reinforcement 5 connecting the unit 26 is provided.
The first reinforcement 5 is provided extending in the longitudinal direction of the vehicle and the vertical direction of the vehicle along the inner side surface of the rear pillar outer panel 24A, and the lower end portion 5a of the first reinforcement 5 is viewed from the side of the vehicle Are arranged at substantially the same height as the lower end 4 a of the deck side pillar 4.

The rear portion 5 b of the first reinforcement 5 is bent into a crank shape in cross section as shown in FIG. 3 and is joined to the rear end 24 a of the rear pillar 24 and the deck side pillar 4. Furthermore, the rear part of the rear pillar outer panel 24A constituting the rear pillar 24 is also bent into a crank shape in section as in the first reinforcement 5, and the rear part 5b of the first reinforcement 5 and the rear part of the rear pillar outer panel 24A are deck side It is overlapped with the deck side pillar inner panel 42 and the deck side pillar reinforcement 43 of the pillar 4 and fixed by the fastening bolt 11 inserted from the longitudinal direction of the vehicle and the nut 12 screwed with the fastening bolt 11 It has become so.
That is, the joint portion of the first reinforcement 5, the rear pillar 24, and the deck side pillar 4 is configured as a first joint portion D1, and in the first joint portion D1, the cabin portion 2 and the deck portion 3 are coupled. ing. Therefore, the rear portion 5b of the first reinforcement 5, the rear end 24a of the rear pillar 24 (corresponding to the rear of the rear pillar outer panel 24A), the deck side pillar inner panel 42 and the deck side pillar reinforcement 43 are predetermined in the vehicle width direction. It is formed in a planar shape extending over the length of the vehicle and facing in the longitudinal direction of the vehicle, and mounting holes for inserting the shaft portion of the tightening bolt 11 are provided at corresponding positions in the planar shape. The rear flange 5c bent from the rear portion 5b of the first reinforcement 5 toward the rear of the vehicle is three sheets sandwiched between the rear flange 24Aa of the rear pillar outer panel 24A and the rear flange 24Ba of the rear pillar inner panel 24B. It is joined by welding in the state of fitting.

Further, as shown in FIGS. 1, 2 and 4, the first reinforcement 5 of the present embodiment extends in the vehicle longitudinal direction from the rear end 24 a of the rear pillar 24 to the door opening 25 of the cabin 2. The rear end 24 a of the rear pillar 24 is connected to the door opening 25. As a result, the stress from the deck 3 generated during traveling is dispersed to the door opening 25 of the cabin 2.
In addition, the first reinforcement 5 is located at the lower rear corner of the door opening 25 at the rear of the vehicle, and extends to the curved lower portion 25 a that protrudes obliquely downward. Further, the lower end portion 5a side of the first reinforcement 5 has a broad shape in which the dimension in the vehicle front-rear direction is longer than the upper portion in the vehicle side view. As a result, the first reinforcement 5 plays a role of bridging between the door opening 25 and the wheel arch 26, so that stress concentration in the cabin 2 is avoided and the door opening The lower bending portion 25a of the portion 25 is configured to be reinforced.
The first reinforcement 5 has a plurality of beads 51 which extend in the longitudinal direction of the vehicle and are spaced apart in the vertical direction of the vehicle. These beads 51 are of the first reinforcement 5. It is provided to increase the rigidity.

Furthermore, as shown in FIGS. 2 and 4, in the rear pillar 24 of the present embodiment, the rear pillar 24 extends from the rear end 24a of the rear pillar 24 to the door opening 25 in the vehicle longitudinal direction. A second reinforcement 6 is provided to connect with the door opening 25. The second reinforcement 6 is provided between the vehicle outer surface of the rear pillar inner panel 24B, the cabin back panel 22 and the side gate stay 7, and the inner surface of the first reinforcement 5 on the vehicle side. It is arranged and fixed at an angle of upslope toward the front of the vehicle in oblique view.
In addition, the height dimension of the second reinforcement 6 in the vehicle upward direction of the junction with the side gate stay 7 is substantially the same as that of the side gate stay 7. Moreover, the second reinforcement 6 has a plurality of beads 61 which extend in the vehicle longitudinal direction and are spaced apart in the vehicle vertical direction, and these beads 61 are of the second reinforcement 6. It is provided to increase the rigidity.

As shown in FIG. 4, the rear portion 5b of the first reinforcement 5 and the rear portion 6a of the second reinforcement 6 of the present embodiment are deck side pillars via a side gate stay 7 having a rectangular shape in a vehicle side view. It is joined to the 4 deck side pillar inner panels 42. Along with this, the rear portion 5 b of the first reinforcement 5 and the rear portion 22 a of the cabin back panel 22 are bent toward the rear of the vehicle over a predetermined length. Further, the rear portion 6a of the second reinforcement 6 extends toward the rear of the vehicle over a predetermined length, and the front portion 7a of the side gate stay 7 straddles the deck portion 3 and the cabin portion 2, It extends toward the front of the vehicle over a predetermined length.
Then, the rear 5b of the first reinforcement 5 and the rear 6a of the second reinforcement 6 are superimposed on the rear 22a of the cabin back panel 22 and joined by welding, and the front 7a of the side gate stay 7 is It is superimposed on the rear part 22a of the cabin back panel 22 from the inside of the vehicle, and is fixed by fastening the plurality of fastening bolts 13 inserted from the vehicle width direction and the nuts 14 screwed to the fastening bolts 13. ing.

That is, the junction of the first reinforcement 5, the second reinforcement 6 and the side gate stay 7 is configured as the second junction D2, and the cabin 2 and the deck 3 are provided at the second junction D2. Are linked. As shown in FIG. 2, the second joint D2 is located above the first joint D1, and the joints between the cabin 2 and the deck 3 are set at two upper and lower positions. . The cabin back panel 22 is not necessarily a necessary member as a member constituting the second joint portion D2.
In addition, as shown in FIG. 4, the rear portion 5b of the first reinforcement 5, the rear portion 6a of the second reinforcement 6, the rear portion 22a of the cabin back panel 22 and the front portion 7a of the side gate stay 7 have a planar shape. It is formed. The rear portion 5b of the first reinforcement 5, the rear portion 6a of the second reinforcement 6, and the rear portion 22a of the cabin back panel 22 are joined by welding in a three-sheet state, and the rear portion of the first reinforcement 5 is 5a, the rear portion 6a of the second reinforcement 6, the rear portion 22a of the cabin back panel 22, and the front portion 7a of the side gate stay 7 are joined by fastening and fixing the fastening bolt 13 and the nut 14 There is. For this reason, mounting holes for inserting the shaft portions of the fastening bolts 13 are provided at corresponding positions in the planar shape portion.

Moreover, the front portion 6b of the second reinforcement 6 is joined to the front portion 5d of the first reinforcement 5, and the tip portion of the front portion 5d of the first reinforcement 5 is the front flange of the rear pillar outer panel 24A. It is joined by welding in the state of 3 sheets held between 24Ab and front flange 24Bb of rear pillar inner panel 24B. A rear portion 24Bc of the rear pillar inner panel 24B located in the vicinity of the second joint D2 is bent toward the vehicle outer side or the vehicle inner side, and is joined to the cabin back panel 22.
Furthermore, as shown in FIG. 2, the rear portion 7 b of the side gate stay 7 is fixed to the upper portion of the deck side pillar inner panel 42 constituting the deck side pillar 4 by the tightening of a plurality of tightening bolts 13 and nuts 14. The fixed portions are arranged side by side at the same height in the vertical direction of the vehicle in the side view of the vehicle. The central portion of the side gate stay 7 has a plurality of beads 71 which extend in the longitudinal direction of the vehicle and are spaced apart in the vertical direction of the vehicle. It is provided to increase the rigidity.

By the way, in the joint structure of this embodiment, as shown in FIG. 2, one first joint D1 is disposed at the lower part in the vehicle vertical direction, and the other second joint D2 is at the upper part in the vehicle vertical direction. It is arranged. Further, as shown in FIGS. 3 and 4, at one first joint portion D1, the joint direction by the tightening bolt 11 and the nut 12 is set in the vehicle longitudinal direction, but at the other second joint portion D2 The joining direction by the tightening bolt 13 and the nut 14 is set in the vehicle width direction.
That is, in the joint structure according to the present embodiment, the joint between the cabin 2 and the deck 3 is divided into two upper and lower portions of the second joint D2 and the first joint D1. The bonding directions of the first bonding portion D1 are set to mutually different orthogonal directions. Therefore, in the joint structure of the present embodiment, stress concentration in the cabin 2 is avoided against stress generated in the deck 3, and a reinforcing effect is obtained against stress in both the vehicle longitudinal direction and the vehicle width direction. It is supposed to be

Moreover, in the joint structure of the present embodiment, the deck side end portion of the rear pillar 24 (vehicle rear side) is a range from the upper portion of the second joint D2 to a position overlapping the side gate stay 7 in the vehicle side view. As shown in FIG. 5 to FIG. 9, a plurality of beads 8 which extend in the longitudinal direction of the vehicle and are spaced apart in the vertical direction of the vehicle at the end portion and the cabin side end portion (vehicle front side end portion) 9 are provided, and the beads 8 and 9 are provided to increase the rigidity of the rear pillar 24.
As shown in FIGS. 8 and 9, these beads 8 and 9 are formed in a bulging shape in which the first reinforcement 5 is expanded to the outside of the vehicle, and the upper and lower middle portions are the first reinforcement 5. It is located away from. And welding points 80 and 90 joined to the 1st reinforcement 5 by welding are provided between a plurality of beads 8 and 9 and beads 8 and 9 which are arranged at intervals in the vertical direction of the vehicle. ing.
Furthermore, the beads 8 and 9 of the rear pillar 24 located in the set range of the second joint portion D2 have an open shape in which the tip portions 8a and 9a communicate with the inside of the rear pillar 24 with a closed cross section. The liquid is configured to be able to enter the rear pillar 24 through the beads 8 and 9. In addition, the bead of this embodiment should just be provided in the deck side edge part (bead 8) of the rear pillar 24 at least.

  Further, as shown in FIGS. 7 to 9, the beads 8 and 9 of the present embodiment are provided at least on the rear pillar outer panel 24A of the rear pillar outer panel 24A and the rear pillar inner panel 24B that constitute the rear pillar 24. However, the beads 8 and 9 may be provided on the rear pillar inner panel 24B in order to further enhance the rigidity of the rear pillar 24. The beads 8 and 9 on the rear pillar inner panel 24B side correspond to the beads 8 and 9 of the rear pillar outer panel 24A. Unlike the first reinforcement 5, the first reinforcement 5 is formed in a bulging shape that bulges inward of the vehicle. Furthermore, the beads 8 and 9 on the rear pillar inner panel 24B side have an open shape in which the tip portions 8a and 9a communicate with the inside of the rear pillar 24 with a closed cross section, similarly to the beads 8 and 9 of the rear pillar outer panel 24A The coating liquid may be easily configured to further intrude into the rear pillar 24 through the beads 8 and 9.

As described above, the joint structure of the cabin 2 and the deck 3 of the cab-over type vehicle 1 according to the embodiment of the present invention includes the cabin 2 and the deck 3, and the vehicle rear side of the cabin 2 A rear pillar 24 with a closed cross-sectional shape is provided along the vertical direction of the vehicle in the portion, and a deck side pillar 4 is provided along the vertical direction of the vehicle on the side portion on the vehicle front side of the deck portion 3. Then, in the rear pillar 24, a first ring extending in the vehicle longitudinal direction from the rear end 24a of the rear pillar 24 to the wheel arch 26 of the cabin 2 and connecting the rear end 24a of the rear pillar 24 and the wheel arch 26 A forcement 5 is provided. The rear portion 5 b of the first reinforcement 5 is joined to the rear end 24 a of the rear pillar 24 and the deck side pillar 4, and the joint portion of the first reinforcement 5, the rear pillar 24 and the deck side pillar 4 is It is comprised as 1 junction part D1.
Therefore, according to the joint structure of the cabin 2 and the deck 3 of the cab-over type vehicle 1 according to the present embodiment, when stress generated during traveling of the vehicle is input from the deck 3 to the cabin 2, the deck side Since the energy is transmitted to the wheel arch 26 of the cabin 2 via the pillars 4, the rear pillar 24 and the first reinforcement 5, the stress from the deck 3 can be efficiently dispersed to the wheel arch 26. Thus, it is possible to prevent stress concentration at a specific location such as the rear pillar 24 of the cabin portion 2. In addition to that, according to the joint structure of the present embodiment, the first reinforcement 5 has an effect of reinforcing the wheel arch portion 26 itself, so the cabin portion 2 at the time of a side collision or a rear collision etc. Damage to the

  Further, in the joint structure of the present embodiment, the first reinforcement 5 extends in the vehicle longitudinal direction from the rear end 24 a of the rear pillar 24 to the door opening 25 of the cabin 2, and the rear end 24 a of the rear pillar 24 It is connected to the door opening 25. Therefore, according to the joint structure of the present embodiment, an effect of dispersing the stress from the deck 3 generated during traveling of the vehicle to the door opening 25 can be obtained. Therefore, the rear pillar 24 or the like of the cabin 2 is specified. Stress concentration at a location can be avoided.

  Furthermore, in the joint structure of the present embodiment, the first reinforcement 5 extends to the lower bend 25 a of the door opening 25. Therefore, according to the joint structure of the present embodiment, the first reinforcement 5 plays a role as a connecting bridge between the door opening 25 and the wheel arch 26 and thus occurs when the vehicle travels. The stress from the deck portion 3 can be dispersed widely, the stress concentration at a specific location of the cabin portion 2 can be further avoided, and the lower bent portion 25a of the door opening 25 can be reinforced.

Further, in the joint structure of the present embodiment, in the rear pillar 24, the rear end 24 a of the rear pillar 24 extends from the rear end 24 a of the rear opening 24 to the door opening 25, and the rear end 24 a of the rear pillar 24 and the door opening 25 A second reinforcement 6 is provided to connect. Moreover, the rear portion 5 b of the first reinforcement 5 and the rear portion 6 a of the second reinforcement 6 are joined to the deck side pillar 4 via the side gate stay 7, and the first reinforcement 5, the second phosphorus 5 The joint between the forcement 6 and the side gate stay 7 is configured as a second joint D2.
Therefore, in the joint structure of the present embodiment, since the joint between the cabin portion 2 and the deck portion 3 is strengthened by the side gate stay 7, the second reinforcement 6 is provided in the second joint portion D2. At the same time, the stress dispersion effect of the second joint D2 to the stress from the deck portion 3 can be further enhanced.

And in the joint structure of the present embodiment, one of the first joint D1 and the second joint D2 is disposed at the lower part in the vehicle vertical direction, and the other second joint D2 is It is disposed at the top in the vertical direction of the vehicle. Further, of the first joint portion D1 and the second joint portion D2, the joint direction of one first joint portion D1 is set in the vehicle longitudinal direction, and the joint direction of the other second joint portion D2 is set in the vehicle width direction It is done.
Therefore, in the joint structure according to the present embodiment, the joint between the cabin 2 and the deck 3 is divided into two upper and lower portions of the second joint D2 and the first joint D1. Since the bonding directions of the first bonding portion D1 are set to mutually different orthogonal directions, it is possible to firmly bond against the stress in the vehicle longitudinal direction and the vehicle width direction generated in the deck portion 3. Therefore, according to the joint structure of the present embodiment, it is possible to avoid stress concentration in the cabin 2 and to reinforce stress in both the longitudinal direction of the vehicle and in the width direction of the vehicle.

Further, in the joint structure of the present embodiment, at least the deck side end portion (and the cabin) of the rear pillar 24 is a range from the upper portion of the second joint portion D2 to a position overlapping with the side gate stay 7 in vehicle side view. A plurality of beads 8, 9 extending in the longitudinal direction of the vehicle and spaced in the vertical direction of the vehicle are provided at the side end portions), and the tip portions 8a, 9a of the beads 8, 9 It has an open shape communicating with the inside. Moreover, the beads 8 and 9 of the joint structure according to the present embodiment are provided at least on the rear pillar outer panel 24A of the rear pillar outer panel 24A and the rear pillar inner panel 24B that constitute the rear pillar 24.
Therefore, in the joint structure of the present embodiment, since it becomes possible to absorb the torsional stress from the deck portion 3 by the beads 8 and 9, the durability of the joint can be improved. Further, in the joint structure according to the present embodiment, the rigidity of the rear pillar 24 can be improved by the presence of the beads 8 and 9, and therefore separation between the deck 3 and the cabin 2 can be prevented. In addition to that, in the joint structure of the present embodiment, the electrodeposition coating liquid penetrates into the rear pillar 24 of the closed cross-sectional shape through the tips 8a and 9a of the beads 8 and 9, so the rear pillar 24 Can effectively prevent the occurrence of internal rust.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes are possible based on the technical idea of the present invention.

  For example, in the embodiment described above, one first joint portion D1 is disposed at the lower portion in the vehicle vertical direction, and the other second joint portion D2 is disposed at the upper portion in the vehicle vertical direction. The bonding direction is set to the longitudinal direction of the vehicle, and the bonding direction of the second bonding portion D2 is set to the vehicle width direction. However, the vertically arranged position and bonding direction of the first bonding portion D1 and the second bonding portion D2 are applicable. It is possible to reverse to the above-mentioned embodiment corresponding to a vehicle type etc.

Reference Signs List 1 cab-over type vehicle 2 cabin portion 3 deck portion 4 deck side pillar 5 first reinforcement 5 b rear of first reinforcement 6 second reinforcement 6 a rear of second reinforcement 7 side gate stay 8, 9 Bead 11, 13 Tightening bolt 12, 14 Nut 21 Side body panel 22 Cabin back panel 22a Rear of cabin back panel 23 Rear floor panel 24 Rear pillar 24a Rear pillar rear end 24A Rear pillar outer panel 24B Rear pillar inner panel 25 Door opening 25a Lower side Curved part 26 Wheel arch part D1 first joint D2 second joint

Claims (7)

A rear pillar having a closed cross-sectional shape is provided along the vehicle vertical direction at a side portion on the vehicle rear side of the cabin portion having a cabin portion and a deck portion, and a side portion on the vehicle front side of the deck portion is In a junction structure of a cabin portion and a deck portion of a cab-over type vehicle in which deck side pillars are provided along the vehicle vertical direction,
In the rear pillar, there is provided a first reinforcement extending in the vehicle longitudinal direction from the rear end of the rear pillar to the wheel arch of the cabin and connecting the rear end of the rear pillar and the wheel arch ,
The rear portion of the first reinforcement is joined to the rear end portion of the rear pillar and the deck side pillar, and the joint portion of the first reinforcement, the rear pillar and the deck side pillar is configured as a first joint portion A junction structure of a cabin portion and a deck portion of a cab-over type vehicle characterized by   The first reinforcement extends in the vehicle longitudinal direction from the rear end of the rear pillar to the door opening of the cabin, and connects the rear end of the rear pillar and the door opening. The joint structure of the cabin part and the deck part of the cab-over type vehicle according to claim 1.   The joint structure of a cabin portion and a deck portion of a cab-over type vehicle according to claim 2, wherein the first reinforcement extends to a lower bending portion of the door opening. A second reinforcement is provided in the rear pillar, extending in the vehicle longitudinal direction from the rear end of the rear pillar to the door opening, and connecting a rear end of the rear pillar to the door opening.
The rear part of the first reinforcement and the rear part of the second reinforcement are joined to the deck side pillar via a side gate stay, and the first reinforcement, the second reinforcement and the side gate The joint structure of a cabin portion and a deck portion of a cab-over type vehicle according to any one of claims 1 to 3, wherein a joint portion of the stay is configured as a second joint portion. One of the first joint portion and the second joint portion is disposed at an upper portion in the vehicle vertical direction, and the other is disposed at a lower portion in the vehicle vertical direction.
5. The bonding direction according to any one of the first bonding portion and the second bonding portion is set in the vehicle width direction, and the other bonding direction is set in the vehicle longitudinal direction. Junction structure of the cabin and deck of a cab-over type vehicle.   It extends from the top of the second joint to a position overlapping with the side gate stay in a vehicle side view, and extends at least in the deck side of the rear pillar in the longitudinal direction of the vehicle, and is spaced in the vertical direction of the vehicle The cab-over type according to claim 4 or 5, characterized in that a plurality of beads arranged at intervals are provided, and a tip end of the bead has an open shape communicating with the inside of the rear pillar. Junction structure of the cabin and deck of the vehicle.   The junction between the cabin portion and the deck portion of the cab-over type vehicle according to claim 6, wherein the bead is provided at least on the rear pillar outer panel among the rear pillar outer panel and the rear pillar inner panel constituting the rear pillar. Part structure.

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