JP7424239B2 - Vehicle rear structure - Google Patents

Description

The present disclosure relates to a rear structure of a vehicle.

A rear end panel that extends in the vehicle width direction below a rear gate opening formed at the rear end of the vehicle body, and a rear side member that is a frame member whose rear end is connected to the rear end panel and extends in the longitudinal direction of the vehicle body. In a rear structure of a vehicle having a rear end panel, a strength reinforcing member is provided at a joint portion between a rear end panel and a rear side member to improve the strength of the rear part of the vehicle body.

For example, Patent Document 1 discloses a rear bumper support structure for an automobile that can prevent the bumper stay from collapsing and also increase the strength of the area near the back door opening. A structure is shown in which the strength reinforcing member and the reinforcing plate are attached to the inside of the vehicle at a substantially vertical connection point.

On the other hand, the rear seat of the vehicle is arranged in front of the rear end panel, and when the seat back of the rear seat is folded toward the seat cushion, both the seat cushion and the seat back rotate toward the rear of the vehicle and are folded. A structure is known in which the storage device is stored by being tilted at an angle along the longitudinal direction of the vehicle. For example, it is shown in Patent Document 2 and Patent Document 3.

JP2009-208610A JP2018-94976A JP2018-94974A

Patent Document 1 discloses installing a reinforcing member on the inside of the vehicle that also increases the strength of the area near the back door opening. It is not shown that it is used as a part.

Further, Patent Document 2 and Patent Document 3 disclose a rotatable rear seat that is stored in front of a rear end panel, but there is no disclosure regarding a resting portion of the rotary seat when the rotary seat is stored. The surface of the rotating seat that appears on the interior side after it is stored functions as the floor surface of the cargo compartment, so the abutment that supports the stored state of the rotating seat is required to efficiently transmit the cargo load to the frame members of the vehicle body. Ru.

Therefore, in view of the above-mentioned problems, at least one embodiment of the present invention provides a reinforcing member of the rear gate opening with a resting part for storing a rear rotatable rear seat. It is an object of the present invention to provide a rear structure for a vehicle that can regulate the rotation range and efficiently transmit the cargo load acting on the rear seat after being stowed to the frame members of the vehicle body.

(1) This invention was invented to achieve the above-mentioned object, and at least one embodiment of the present invention has a rear gate opening at the rear end of the vehicle body, and a rear rotation storage device in front of the rear gate opening. A rear structure of a vehicle equipped with a type rear seat, comprising: a pair of left and right rear side members extending in the longitudinal direction of the vehicle; and a rear floor panel provided above the rear side members and forming a rear cargo floor of the vehicle. a rear end panel extending in the vehicle width direction below the rear gate opening and coupled to a rear end of the rear side member; one end coupled to the rear side member via the rear floor panel; a reinforcing member whose other end is coupled to the rear end panel, and a skeletal member of the rear seat comes into contact with the reinforcing member when the rear rotatable rear seat is rotated and stored toward the rear of the vehicle. A stopper portion is provided.

According to configuration (1), when the rear rotatable seat is rotated toward the rear of the vehicle and stored, the frame member of the rear seat hits the stopper portion provided on the reinforcing member, so that the rear seat The rotation range toward the rear of the vehicle is reliably regulated by a simple structure.

Furthermore, since the surface of the rear seat that appears on the indoor side after being stowed functions as the cargo compartment floor surface, the cargo load also acts on the stopper portion that supports the stowed state of the rear seat. Since the stopper portion is provided on the reinforcing member and the reinforcing member is coupled to the rear side member, which is a frame member of the vehicle body, the cargo load can be efficiently transmitted to the rear side member, which is the frame member of the vehicle body. Therefore, the load on the rear floor panel is reduced compared to a structure in which the rear seat is supported in the stowed state by directly applying the rear seat to the rear floor panel that constitutes the floor surface of the rear cargo compartment of the vehicle. In other words, damage to the rear floor panel caused by the rotated rear seat is reduced.

(2) In some embodiments, the stopper portion is a contact surface against which the lower surface of the seat frame constituting the rear seat is in the stored state.

According to the configuration (2), the stopper portion is a contact surface against which the lower surface of the seat frame constituting the rear seat is in the stored state, so that the rear seat of the rear rotationally retractable type is prevented from moving toward the rear of the vehicle. Rotation is reliably regulated, and the cargo load acting on the rear seat after being stowed can be reliably transmitted to the rear side member.

(3) In some embodiments, one end of the reinforcing member is coupled to the rear side member via the rear floor panel by a plurality of bolts, and the contact surface is sandwiched between the plurality of bolts in a plan view. formed in position.

According to such configuration (3), since the abutment surface is formed at a position sandwiched between a plurality of bolts in a plan view, that is, the abutment surface is located near the bolts, so that the abutment surface acts on the abutment surface. The cargo load can be reliably transmitted to the rear side member.

(4) In some embodiments, the abutting surface is formed on the top surface of the bead that protrudes from the bolt fastening surface so as to be located above the upper end position of the bolt.

According to such configuration (4), the abutment surface is formed on the top surface of the bead that is raised from the bolt fastening surface so as to be located above the upper end position of the bolt, so that the seat frame cannot be stored in the abutment surface. The contact of the underside in this condition is not impaired by the bolt. Moreover, the stiffness of the reinforcing member is improved by the raised bead.

(5) In some embodiments, the reinforcing member is a plate-like member provided inclined in the longitudinal direction of the vehicle, and the one end portion located on the lower side is connected to the rear side member via the rear floor panel. The other end located on the upper side is constituted by a rear end brace coupled to the rear end panel above the rear floor panel, and the stopper part is provided at the one end.

According to configuration (5), the rigidity around the rear end panel at the rear of the vehicle body can be improved by the brace structure of the rear end brace, and one end of the rear end brace is used as a stopper, so that the rear The range of rotation of a rotatably retractable seat toward the rear of the vehicle can be regulated with a simple structure.

According to at least one embodiment of the present invention, by providing the reinforcing member of the rear gate opening with a support part for storing the rear rotatable rear seat, the rear seat is moved toward the rear side of the vehicle when the rear seat is stored. The rotation range is reliably regulated, and the cargo load acting on the rear seat after being stowed can be efficiently transmitted to the rear side member, which is a frame member of the vehicle body.

FIG. 1 is a perspective view of a rear end panel of a vehicle according to an embodiment of the present invention, as seen from the inside of the vehicle interior toward a rear end panel. FIG. 2 is an enlarged perspective view of a portion of a reinforcing member in the embodiment of FIG. 1; FIG. 2 is a sectional side view of a main part, showing a state in which the rear rotatable rear seat is stored. FIG. 3 is a schematic cross-sectional view taken along line BB in FIG. 2 at section C in FIG. 3; FIG. 2 is a front view of a cross-sectional main part of the vehicle, showing a state in which the rear rotatable rear seat is retracted, and looking at the rear of the vehicle from inside the vehicle. FIG. 5 is a schematic cross-sectional view taken along line AA in FIG. 2 at section D in FIG. 5; FIG. 3 is a side schematic view showing a procedure for storing the rear seat. FIG. 3 is a side schematic view showing a procedure for storing the rear seat. FIG. 3 is a side schematic view showing a procedure for storing the rear seat.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. However, the relative arrangement of components described in the embodiments or shown in the drawings is not intended to limit the scope of the present invention thereto, and is merely an illustrative example. Note that the directions of up, down, front, back, left, and right in the description are defined as the direction in which the passenger looks forward from the driver's seat. In each figure, "FR" indicates forward, "RHD" indicates right, and "UPR" indicates upward.

An embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 shows a rear body structure 3 of a vehicle 1. As shown in FIG. FIG. 1 is a perspective view of the rear of the vehicle 1 viewed from inside the cabin. Vehicle 1 is. A rear gate opening 5 that is opened and closed by a back door (not shown) is provided at the rear of the vehicle body.

In front of this rear gate opening 5, as shown in FIG. 7A, etc., a rear seat 7 that can be rotated and retracted is provided, forming a rear passenger compartment 9 that can be used as a cargo space or a passenger compartment. It has become. The rear compartment 9 can be accessed by opening and closing the back door. Although the rear seat 7 is an example of the rearmost seat of a third-row seat or a second-row seat, the number of rows is not critical, and it may be any seat located at the rearmost position.

First, the rear body structure 3 of the vehicle 1 will be explained. As shown in FIG. 1, a pair of left and right rear pillars 11 that form the rear gate opening 5 are provided, and both ends in the vehicle width direction are connected to the lower ends of the rear pillars 11, and the rear end that forms the lower side of the rear gate opening 5 is provided. A panel 13 is provided.

A rear floor panel 15 forming a floor is disposed at the bottom of the rear compartment 9, which is used as a luggage compartment space or a passenger compartment space. Both sides of the vehicle of the rear floor panel 15 are connected to the rear wheel house 17, and the rear end of the rear floor panel 15 is connected to the inner side panel 13a of the rear end panel 13, which is formed substantially vertically.

On the lower surface of both sides of the vehicle of the rear floor panel 15, a pair of left and right rear side members 19 having an inverted hat-shaped cross section (a concave shape with an open top) extend along the sides of the rear wheel house 17 in the longitudinal direction of the vehicle. . The rear floor panel 15 and the rear side member 19 form a closed section 21 in the vehicle width direction (see FIG. 6). Also. A rear end portion of this rear side member 19 is coupled to an inner side panel 13a of the rear end panel 13.

A reinforcing member 23 is provided, one end of which is connected to the rear side member 19 via the rear floor panel 15, and the other end of which is connected to the inner side panel 13a of the rear end panel 13.

For example, as shown in FIGS. 1 and 2, the reinforcing member 23 is a plate-shaped sheet metal member that is inclined in the longitudinal direction of the vehicle, and one end located on the lower side of the inclination is connected to the rear side member via the rear floor panel 15. 19 with bolts 25, and the other end located on the inclined upper side is connected to the inner side panel 13a of the rear end panel 13 above the rear floor panel 15, and the substantially horizontal rear side member 19 and the substantially vertical rear end panel are connected to each other. 13 is reinforced with diagonal members, which is a so-called brace structure. In this way, the reinforcing member 23 is constituted by the rear end brace 27.

The other end of the rear end brace 27 located on the upper side of the slope is connected to the rear end panel 13, as shown in FIG. and is connected to the inner side panel 13a by bolts 29.

A bulkhead 16 is provided inside the closed section 14 formed by the inner side panel 13a and the outer side panel 13b of the rear end panel 13 to partition the closed section 14 in the vehicle width direction, thereby increasing the strength of the rear end panel 13. It is being

Further, as shown in FIGS. 1 and 2, the rear end brace 27 is provided with a plurality of longitudinal beads 31 for reinforcement, which are formed in an uneven shape along the vehicle width direction and extend along the vehicle longitudinal direction. .

One end of the rear end brace 27 located on the lower side of the slope is located on the vehicle center side in the vehicle width direction, and is located on the rear side when the rear rotatable rear seat 7 is rotated and stored toward the rear of the vehicle. A stopper portion 35 is provided against which the seat back frame 33, which is a skeletal member of the seat 7, comes into contact.

As shown in FIGS. 1 and 2, the stopper portion 35 is configured, for example, as a contact surface 37 against which a portion of the lower surface of the seat back frame 33 of the rear seat 7 in the stored state comes into contact.

3 to 6 show a state in which a portion of the lower surface of the seat back frame 33 is in contact with the contact surface 37 in the stored state. FIG. 3 shows a state in which the rear seat 7 is stored, and is a side view of a cross section of the main part, and a state in which the seat back 7a and the seat cushion 7b are overlapped and rotated toward the rear of the vehicle and stored. shows.

FIG. 4 is an enlarged view schematically illustrating a cross section taken along the line B--B in FIG. 2 at section C in FIG. 3, and as shown in FIG. 39 is shown in which the lower surface of the side frame 33b in the retracted state contacts the contact surface 37 through the skin 40 of the seat back 7a.

Further, as shown in FIGS. 3 and 4, the front and rear bolts 25, 25 on the lower inclined side of the rear end brace 27 are installed at intervals in the longitudinal direction of the vehicle, and are connected to the flange portion of the rear side member 19 via the rear floor panel 15. 19a. Further, a contact surface 37 is arranged between the front and rear bolts 25, 25.

FIG. 5 shows a state in which the rear seat 7 is retracted, and is a front view of a cross section of a main part when looking at the rear of the vehicle from inside the vehicle. A state in which the headrest 7c attached to the headrest 7a is sandwiched is shown.

Further, as shown in FIG. 5, the left and right bolts 25, 25 on the lower side of the slope of the rear end brace 27 are installed at intervals in the vehicle width direction, and are connected to the flange portion 19a of the rear side member 19 via the rear floor panel 15. conclude. Further, vertical beads 31, 31 are arranged between the left and right bolts 25, 25.

FIG. 6 is an enlarged view schematically showing a section taken along line AA in FIG. 2 at section D in FIG. 5. FIG. As shown in FIG. 6, the lower surface of the side frame 33b connected to the vehicle width direction end of the pipe-shaped seatback cross frame 33a and the reclining mechanism 39 in the retracted state is connected to the contact surface 37 through the skin 40 of the seatback 7a. Indicates the state in which this occurs.

Next, a procedure for storing the rear rotatable rear seat 7 will be described with reference to FIGS. 7A to 7C. Storage is performed in the order of FIG. 7A→FIG. 7B→FIG. 7C. In this embodiment, the rear seat 7 is of a bench type in which the left and right seating portions and the left and right backrest portions are integrated into each other.

FIG. 7A shows a storage start state as the first step. In normal use, the seat cushion 7b constituting the seating portion of the rear seat 7 and the seat back 7a constituting the backrest are connected by a reclining mechanism 39, and the seat back 7a is positioned at a predetermined position relative to the seat cushion 7b. It is set to a reclining angle and is used as a rear seat. At the start of storage, the seat back 7a is folded toward the seat cushion 7b by the reclining mechanism 39.

The reclining mechanism 39 is fixed to the vehicle body side, such as the rear floor panel 15 or the rear wheel house 17, via a hinge bracket 41. Further, the seat cushion 7b is fixed onto the rear floor panel 15 by a locking mechanism (not shown) that can be locked and unlocked.

FIG. 7B shows a backward rotation state as the second step. The seat back 7a is folded toward the seat cushion 7b by the reclining mechanism 39, and is stacked on the upper surface of the seat cushion 7b. When the lock mechanism is released, the seat cushion 7b is unlocked, and the seat cushion 7b and seat back 7a are integrally supported in the folded state by the hinge bracket 41 and can rotate toward the rear of the vehicle. Become.

FIG. 7C shows a storage completion state as the third step. The seat cushion 7b and the seat back 7a are integrally rotated toward the rear of the vehicle, and are tilted and stored in a stacked state at an angle along the longitudinal direction of the vehicle. When the seatback frame 33 is stored, a part of the lower surface of the seatback frame 33 in the stored state hits the abutment surface 37, which restricts the range of rotation toward the rear of the vehicle, and the seatback frame 33 is stored in an overlapping state at an angle along the longitudinal direction of the vehicle. be done.

In this way, the reclining mechanism 39, the hinge bracket 41, and a locking mechanism (not shown) are configured so that the rear seat 7 can be folded and rotated rearward to be stored in the procedure shown in FIGS. 7A to 7C.

According to the embodiment described above, since the contact surface 37 constituting the stopper part 35 is provided using a part of the rear end brace 27 which is a reinforcing member, a part corresponding to the stopper part is newly added to the rear floor panel 15 etc. There is no need to install it, and the rear structure of the vehicle can be simplified. Moreover, the abutting surface 37 can reliably restrict the range of rotation of the rear seat 7 toward the rear of the vehicle when it is stored.

Furthermore, since the back surface of the seat cushion 7b that appears on the indoor side after being stored functions as a cargo compartment floor surface, the cargo load also acts on the abutment surface 37. Since the abutment surface 37 is formed on the rear end brace 27 connected to the rear side member 19, the cargo load acting on the abutment surface 37 can be efficiently transmitted to the rear side member 19, which is a frame member of the vehicle body.

Therefore, the load on the rear floor panel 15 is reduced compared to a structure in which the rear seat 7 is supported by directly touching the rear floor panel 15 when it is stored. In other words, damage to the rear floor panel 15 by the rear seat 7 during storage is reduced.

Further, according to the present embodiment, the contact surface 37 which is the stopper portion 35 is a surface against which the lower surface of the seat back frame 33 of the rear seat 7 in the stored state comes into contact when it is stored. It is a rigid part, rather than a member that easily deforms like the frame, and since it supports the lower surface of the frame from below when it is in the retracted state, it is possible to reliably restrict the range of rotation toward the rear of the vehicle, and it also allows the rear seats to be The cargo load acting on the seat 7 can be reliably transmitted to the rear side member 19.

Furthermore, according to the present embodiment, the rear end brace 27 has a so-called brace structure in which the substantially horizontal rear side member 19 and the substantially vertical rear end panel 13 are reinforced with diagonal members. The surrounding rigidity can be effectively improved, and since a part of the rear end brace 27 is used as the contact surface 37, the range of rotation of the rear rotatable rear seat 7 toward the rear of the vehicle is reduced. It can be regulated by a simple structure.

In some embodiments, as shown in FIGS. 1-4, one end of the rear end brace 27 is coupled to the rear side member 19 via the rear floor panel 15 by a plurality of bolts 25, and the abutment surface 37 is It is formed at a position sandwiched between a plurality of bolts 25, 25 in the longitudinal direction of the vehicle.

According to such a configuration, the abutment surface 37 is sandwiched between a plurality of bolts 25 (two arranged in the longitudinal direction of the vehicle) and located near the bolt 25 in a plan view, so that the abutment surface 37 37 can be reliably transmitted to the rear side member 19.

In some embodiments, as shown in FIG. 4, the contact surface 37 is located at the top of the horizontal bead 43 that is raised from the bolt fastening surface of the rear end brace 27 so as to be located above the position of the upper end (bolt head) of the bolt 25. formed on the surface.

Further, as shown in FIGS. 2 and 4, the abutment surface 37 is provided with a horizontal bead 43 on which the abutment surface 37 is formed extending in the left-right direction of the vehicle, and extends along the longitudinal direction of the vehicle. The bead shape is connected to one of the plurality of longitudinal beads 31 existing so that the bead shape is continuous. Note that the height of the horizontal bead 43 from the bolt fastening surface is formed higher than the height of the vertical bead 31, but since the contact surface 37 is located above the position of the upper end (bolt head) of the bolt 25, If there is, it may be set to the same height as the vertical bead 31.

According to such a configuration, the contact surface 37 is formed on the top surface of the horizontal bead 43 that protrudes from the bolt fastening surface of the rear end brace 27 so as to be located above the position of the bolt head of the bolt 25. The contact of the lower surface of the seat back frame 33 in the stored state with the surface 37 is not impaired.

Moreover, the rigidity of the rear end brace 27 is further improved by the horizontal beads 43 extending along the left-right direction of the vehicle, together with the plurality of vertical beads 31 extending along the front-rear direction of the vehicle.

According to the present embodiment described above, the rear rotatable rear seat 7 has been described as a bench type in which the left and right seating portions and the left and right backrest portions are integrated, respectively. Alternatively, the left and right backrest portions may be of a separate type, in which case the left and right rear end braces 27 are provided with contact surfaces 37 formed on the left and right rear end braces 27. The backrest portions of the left and right separated seats are supported by applying a portion of the seatback frame on the outside in the vehicle width direction or a part of the seatback frame. Furthermore, in the case of the separate type, the storage procedure is performed for each of the left and right separation sheets, as shown in FIGS. 7A to 7C, which have already been described.

According to at least one embodiment of the present invention, the reinforcing member of the rear gate opening is provided with a resting part for storing a rear rotatable seat. It is suitable for use in the rear structure of a vehicle because it can restrict the rotation range and efficiently transmit the cargo load acting on the seat after it has been stowed to the frame members of the vehicle body.

1 Vehicle 3 Rear body structure 5 Rear gate opening 7 Rear seat 7a Seat back 7b Seat cushion 11 Rear pillar 13 Rear end panel 15 Rear floor panel 17 Rear wheel house 19 Rear side member 19a Rear side member flange 23 Reinforcement members 25, 29 Bolts 27 Rear end brace 31 Vertical bead 33 Seatback frame 33a Seatback cross frame 33b Side frame 35 Stopper portion 37 Abutment surface 40 Seatback skin 43 Horizontal bead

Claims (5)

A rear structure of a vehicle having a rear gate opening at the rear end of the vehicle body, and a rear rotatable rear seat in front of the rear gate opening,
a pair of left and right rear side members extending in the longitudinal direction of the vehicle;
a rear floor panel provided on the rear side member and constituting a vehicle rear luggage compartment floor;
a rear end panel extending in the vehicle width direction below the rear gate opening and coupled to a rear end of the rear side member;
a reinforcing member having one end coupled to the rear side member via the rear floor panel and the other end coupled to the rear end panel;
A rear structure for a vehicle, wherein the reinforcing member is provided with a stopper portion against which a frame member of the rear seat comes into contact when the rear rotatable rear seat is rotated toward the rear of the vehicle and stored. 2. The vehicle rear structure according to claim 1, wherein the stopper portion is a contact surface against which a lower surface of a seat frame constituting the rear seat is in a stored state. One end of the reinforcing member is coupled to the rear side member via the rear floor panel by a plurality of bolts, and the contact surface is formed at a position sandwiched between the plurality of bolts in a plan view. The vehicle rear structure according to claim 2. 4. The vehicle rear structure according to claim 3, wherein the abutment surface is formed on a bead-shaped top surface that is raised from the bolt fastening surface so as to be located above the upper end position of the bolt. The reinforcing member is a plate-like member provided inclined in the longitudinal direction of the vehicle, the one end located on the lower side is coupled to the rear side member via the rear floor panel, and the other end located on the upper side. The vehicle according to any one of claims 1 to 4, wherein: is constituted by a rear end brace coupled to the rear end panel above the rear floor panel, and the stopper portion is provided at the one end portion. Rear structure.

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