JPH10147163A - Rear seat structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rear seat structure for an autpmobile, which can restrain the cost from increasing, and which can have a seat sliding function. SOLUTION: A rear seat structure has a cushion frame 12 for supporting a seat cushion, and a seat back frame 14 for supporting a seat back, the seat back frame 14 being composed of an upper frame 16 and a lower frame 18. A reinforcing bar 30 is laid widthwise of a vehicle, having opposite ends 30a, 30b attached to struts 32, 32 which are located in the rear opposite side parts of the vehicle, and the upper frame 16 of the seat back frame 14 is coupled to the reinforcing bar 30 so as to be rotatable. The upper frame 16 and the lower frame 18 are coupled together so that the inclination angle thereof is variable, and the lower frame and the cushion frame 12 are coupled together so that the inclinatin angle thereof is variable. The cushion frame 12 is attached to the vehicle body so as to be slidable in the longitudinal direction of the vehicle body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear seat structure of a motor vehicle, and more particularly to a rear seat structure of a wagon vehicle.

[0002]

2. Description of the Related Art FIG. 8 shows a conventional rear seat structure of this type. In the figure, the rear seat 8
8 includes a seat cushion 90, a seat back 92, and a cushion frame 94 and a seat back frame 96 for supporting the same.
The seat back frame 96 is arranged at an angle of inclination with respect to the cushion frame 94 in a substantially horizontal direction.

[0003]

By the way, as a rear seat structure especially in a wagon vehicle, a seat cushion having a so-called seat sliding function in which a seat cushion slides in a vehicle longitudinal direction has not been proposed at present.
The reason for this is that in the case of a wagon car, the back side of the seat back frame is a luggage compartment, and there is no member located behind the seat back frame such as a parcel board, so the seat back frame cannot be held. This is because of the problem.

[0004] Further, it is conceivable to provide a seat sliding function for the rear seat with the same structure as the front seat having no member to be held on the rear side. In this case, however, the space between the cushion frame 94 and the seat back frame 96 may be provided. It is necessary to reinforce the reclining device provided at the portion A shown in FIG.
In particular, considering the impact in the event of a rear collision, it must be stronger than the front seat, and the thickness of the gears and peripheral brackets built into the reclining device is set to about 1.5 times the thickness of the front seat. However, there is a problem that the cost rise is large.

In order to make the seat belt for the central seat of the rear seat a three-point seat belt, it is necessary to reinforce the portion B shown in the drawing near the upper side of the seat back frame 96. There is also a problem that it costs a lot. The present invention has been made in view of such a problem, and an object of the present invention is to provide a rear seat structure of an automobile having a seat sliding function while suppressing an increase in cost. .

Another object of the present invention is to provide a rear seat structure of an automobile in which a retractor for a seat belt can be positioned behind a seat back frame while suppressing an increase in cost. That is.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a cushion frame for supporting a seat cushion, and the cushion frame is disposed at an angle to the cushion frame. In the rear seat having a seat back frame, reinforcing bars are arranged along the vehicle width direction, and both ends thereof are attached to struts positioned on both sides behind the vehicle body,
The seat back frame is rotatably connected to the reinforcing bar, and at least a portion rotatably connected to the reinforcing bar is variable in inclination angle with respect to the cushion frame. Is mounted so as to be slidable in the vehicle longitudinal direction with respect to the vehicle body.

Further, the seat back frame may be formed integrally, but according to the second aspect of the present invention, in the first aspect, the seat back frame comprises an upper frame and a lower frame. The upper frame and the lower frame are variably connected to each other at an angle of inclination. Further, the reinforcing bar may be fixedly attached to the strut, but the invention according to claim 3 is characterized in that in the device according to claim 1 or 2, the reinforcing bar is detachably attached to the strut. Features.

[0009] The invention described in claim 4 is the first invention.
3. The reinforcing bar according to claim 3, wherein the reinforcing bar has a built-in seat belt retractor, and the seat belt can be pulled out of the reinforcing bar. According to a fifth aspect of the present invention, in the one of the first to fourth aspects, in the reinforcing bar, the luggage compartment partitioning member can be pulled out of the reinforcing bar,
It is characterized by being wound up.

Further, the connection between the seat back frame and the cushion frame can be arbitrarily performed, but the invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein The lower side of the frame and the rear side of the cushion frame are each formed in a circular cross-section, and the seat back frame is variable in inclination angle with respect to the cushion frame by a plurality of connectors having two insertion holes through which both are inserted. It is characterized by being connected.

The connection between the upper frame and the lower frame can be made arbitrarily. According to a seventh aspect of the present invention, the lower frame of the seat back frame is connected to the lower side of the upper frame of the seat back frame. The upper side of the lower frame is formed to have a circular cross section, and the upper frame and the lower frame are variably connected to each other by a plurality of connecting tools having two insertion holes through which both are inserted. Features.

[0012]

According to the first aspect of the present invention, the cushion frame can slide in the vehicle longitudinal direction,
Simultaneously with this sliding, at least a portion of the seat back frame connected to the reinforcing bar changes its inclination angle with respect to the cushion frame and rotates around the reinforcing bar.

[0013] The seat back frame is held by the reinforcing bar because it is connected to the reinforcing bar having both ends attached to the struts, and thus reinforces the connecting portion between the cushion frame and the seat back frame. At least, the cushion frame can have a slidable structure. Further, since the reinforcing bar connects between the struts, the rigidity of the vehicle body can be improved.

According to the second aspect of the present invention, in addition to the operation and effect according to the first aspect, the inclination angle between the upper frame and the lower frame is variable, so that the rear seat can be mounted. After connecting the reinforcement bar to the upper frame in advance and attaching the cushion frame to the vehicle body, when attaching both ends of the reinforcement bar to the struts,
The vertical position of both ends of the reinforcing bar can be adjusted by changing the inclination angle between the upper frame and the lower frame. Therefore, attachment between the reinforcing bar and the strut can be easily performed.

Further, when the cushion frame and the seat back frame are carried into the vehicle body at the factory, not only the seat back frame is tilted close to 180 degrees so as to be folded on the cushion frame, but also the upper frame and the lower frame are not limited. By inclining nearly 180 degrees so as to fold each other, and folding the whole,
By making it compact in the front-rear direction and the up-down direction, it can be easily carried in from the door of the vehicle body, and the productivity can be improved.

Further, it is known that the seat back is more comfortable to bend when bent in the middle in the vertical direction than when it is not bent. , And a comfortable seat. According to the third aspect of the invention, in addition to the operation and effect according to the first or second aspect, by removing the reinforcing bar from the strut, the seat back frame is inclined so as to be folded on the cushion frame. The angle can be made close to 180 degrees, and the rear seat can be made flat.

According to the fourth aspect of the present invention, in addition to the functions and effects described in any of the first to third aspects, the seat back frame itself is provided by incorporating the seat belt retractor in the reinforcing bar. Without reinforcing
The seat belt retractor can be located behind the seat back frame. Therefore, a three-point seat belt can be adopted for the central seat of the rear seat.

According to the fifth aspect of the present invention, in addition to the functions and effects described in any one of the first to fourth aspects, the luggage compartment partitioning member is wound up in the reinforcing bar.
When necessary, it can be pulled out and used as a net that separates the luggage compartment and the seat, or used as a parcel cover that partitions the luggage compartment up and down. When such a luggage compartment partitioning member is unnecessary, it is wound up in the reinforcing bar,
No space is required.

According to the sixth aspect of the invention, in addition to the functions and effects described in any one of the first to fifth aspects, the lower side of the seat back frame and the rear side of the cushion frame are respectively inserted. By using a plurality of connecting tools having two insertion holes, the seat back frame can be easily connected to the cushion frame at a variable inclination angle.

According to the seventh aspect of the present invention, in addition to the functions and effects described in any one of the first to sixth aspects, the lower side of the upper frame and the upper side of the lower frame of the seat back frame are respectively provided. The upper frame and the lower frame can be easily connected to each other so that the inclination angle between the upper frame and the lower frame can be changed by a plurality of connecting tools having two insertion holes to be inserted.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view illustrating a rear seat structure according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a rear seat, which includes a cushion frame 12 disposed substantially in a horizontal plane, and a seat back frame 14 disposed at an inclined angle with respect to the cushion frame 12. In addition, the seat cushion and the seat back which are supported by and respectively cover the cushion frame 12 and the seat back frame 14 are omitted.

The seat back frame 14 is divided into an upper frame 16 and a lower frame 18, and a lower side 16a of the upper frame 16 and an upper side 18 of the lower frame 18 are provided.
b is connected variably to the inclination angle by a plurality of connecting tools 20. That is, as shown in FIG. 2, the lower side 16a of the upper frame 16 and the upper side 1 of the lower frame 18
8b are pipes each having a circular cross section, and the connecting member 20 is a first connecting member 2 of the same shape having both ends in a semicircular shape.
1 and the second connecting member 22, and the lower side 16 of the pipe-shaped upper frame 16 is
a and the upper side 18b of the lower frame 18 form two insertion holes 20a and 20b, respectively. Accordingly, the lower side 16a of the upper frame 16 and the lower frame 18
And the first connecting member 2 from both sides thereof.
1 and the second connecting member 22, and the insertion holes 20 a,
20b, the first connecting member 21 and the second connecting member 22 are fixed with the bolts 24 and the nuts 26, so that the lower side 16a of the upper frame 16 and the lower frame 1 are fixed.
8 and the upper side 18b can be relatively rotated with respect to the connecting tool 20, respectively, so that the upper frame 16 and the lower frame 18 are variably connected to each other at an angle of inclination.

Similarly, the lower side 18a of the lower frame 18 and the rear side 12b of the cushion frame 12 are also formed in a circular cross section, respectively, and the lower side 18a and the rear side 12b define the insertion holes 20a, 20b of the connecting member 20. The insertion allows the lower side 18a of the lower frame 18 and the rear side 12b of the cushion frame 12 to be relatively rotatable with respect to the connecting member 20, respectively. Is done.

The cushion frame 12 is slidably mounted on the vehicle body. That is, a known electric slide mechanism 70 is provided in the cushion frame 12, and the slide mechanism 70
An upper rail 72 integrally attached to the upper rail 72; a lower rail (not shown) fitted to the upper rail 72 and fixed to the vehicle body; a lead screw 76 pivotally supported by the upper rail 72; And a slide motor 80 that applies a rotational force to the lead screw 76.

The upper side 16b of the upper frame 16 is rotatably connected to a reinforcing bar 30 disposed horizontally behind the upper frame 16 in the vehicle width direction. Upper side 16b of upper frame 16
Are previously inserted into the long holes 31a of the brackets 31 before assembling the upper frame 16, and the rear ends of the brackets 31 are fixed at intervals in the vehicle width direction of the reinforcing bar 30. By the upper frame 16
The upper side 16b is slidable in the longitudinal direction of the bracket 31 and rotatable with respect to the bracket 31,
Therefore, the upper frame 16 is rotatably connected to the reinforcing bar 30 around a substantially horizontal axis.

The reinforcing bar 30 is further provided with both ends 30.
a, 30a are fastened to struts 32, 32 positioned on both sides at the rear of the vehicle body. The strut 32 is a wheel house inner panel 3 forming a part of the wheel house.
3 and a base support spring 34 fixed to the top thereof. The base support spring 34 supports the upper end of a suspension (not shown). Further, as shown in FIG. 3, a mounting hole 34a is formed in the upper surface of the base support spring 34,
A serration bolt 36 is inserted into the mounting hole 34a from below.
Is press-fitted. The serration bolts 36 are provided with mounting holes 30b, 30 provided at both ends 30a of the reinforcing bar 30.
b and is fastened to the nut 38. Beads 30c are formed at both ends 30a of the reinforcing bar 30 to further secure the strength. The nut 38 and the serration bolt 36 are preferably the same as the nut and the serration bolt for fastening the spare tire.

In this manner, both ends 30 are
a inside a reinforcing bar 30 to which a is attached, a seat belt 40 or a net 4 serving as a cargo compartment partitioning member.
2 and the parcel 44 are respectively wound so as to be able to be pulled out from the reinforcing bar 30. The seat belt 40 is embedded near the center of the reinforcing bar 30 in the vehicle width direction, and
It is wound around a known ELR type seat belt retractor 46 fixed to 0, and is pulled out from an outlet 30f provided on the upper surface of the reinforcing bar 30.

The net 42 has one end extending in the vehicle width direction inside the reinforcing bar 30 and both ends thereof connected to the reinforcing bar 3.
It is fixed to a take-up pipe 50 that is rotatably mounted with respect to 0 and wound around the take-up pipe 50. The other end of the net 42 becomes a thick portion 42a, which is in contact with an outlet 30d provided in the vehicle width direction on the upper surface of the reinforcing bar 30, and draws the net 42 from the outlet 30d with the thick portion 42a. It is possible to do. The winding pipe 50 is constantly urged in the winding direction of the net 42 by a spring (not shown). The net 42 is provided with a fastener 42b as appropriate.
Is hooked on a hook provided on the upper part of the rear pillar of the vehicle body, for example, so that the net 42 is held in an extended state, and thus the luggage compartment and the seat can be partitioned.

Similarly, the parcel 44 has a winding pipe 5 having one end extending in the vehicle width direction inside the reinforcing bar 30 and both ends rotatably attached to the reinforcing bar 30.
2 and wound around a winding pipe 52.
The other end of the parcel 44 becomes a thick portion 44a, and the reinforcing bar 3
The rear part 0 is in contact with an outlet 30e (see FIG. 4) provided in the vehicle width direction, and the parcel 44 can be pulled out from the outlet 30e with the thick portion 44a. The winding pipe 52 is constantly urged in the winding direction of the parcel 44 by a spring (not shown).
Further, the parcel 44 is appropriately provided with a fastener 44b. The fastener 44b is hooked on a hook provided at a rear portion of a luggage room of the vehicle body, for example, to hold the parcel 44 in a horizontally pulled-out state. Thus, it is possible to function as a parcel cover that partitions the luggage compartment up and down.

When assembling the rear seat 10 to the vehicle body, first, the upper frame 16 and the lower frame 18 of the cushion frame 12 of the rear seat 10 or the seat back frame 14 are all connected by a connecting tool 20 in advance. The electric slide mechanism 70 is attached to the frame 12, and furthermore, the upper frame 16
With the reinforcing bar 30 connected to the upper side 16a,
As shown in FIG. 5, the lower frame 18 of the seat back frame 14 is inclined by approximately 180 degrees so as to fold with respect to the cushion frame 12, and the upper frame 16 and the lower frame 18 are also approximately 180 degrees so as to fold with each other. By tilting and folding the whole, it is made compact in the front-rear direction and the vertical direction, and can be easily carried through the opening 60 of the door of the vehicle body.

Then, after being carried into the vehicle body, the electric slide mechanism 70 is mounted on the vehicle body, the cushion frame 12 is slidably mounted on the vehicle body, and the reinforcing bar 30 is mounted on the strut 32. At this time, as shown in FIG. 6, the serration bolt 36 press-fitted into the base support spring 34 of the strut 32.
Even if there is a dimensional error between the position of the upper frame 16 and the mounting hole 30b of the reinforcing bar 30, by changing the inclination angle between the upper frame 16 and the lower frame 18, the upper frame 16 By moving the reinforcing bar 30 along the long hole 31a, the vertical position and the front-back position of both ends 30a of the reinforcing bar 30 can be adjusted. Therefore,
The attachment between the reinforcing bar 30 and the strut 32 can be easily performed, and the mounting hole 30b of the reinforcing bar 30 does not need to be elongated.

In the rear seat structure configured as described above, when the operation switch of the electric slide mechanism 70 is turned on, the slide motor 80 of the cushion frame 12 rotates, and this rotation is given to the lead screw 76. Then, the rotation of the lead screw 76 is converted into a sliding motion of the upper rail 72 by being guided by the nut housing 78 fixed to the lower rail, and the cushion frame 12 slides in the vehicle longitudinal direction.

At the same time as the slide, the lower frame 18 of the seat back frame 14 is
2, the upper frame 16 of the seat back frame 14 rotates about the reinforcing bar 30. Upper frame 1 of seat back frame 14
Since the upper side 16b of 6 is connected at both ends 30a to the reinforcing bar 30 attached to the strut 32, the upper side 16b is reliably held by the reinforcing bar 30 even during sliding.
Therefore, the cushion frame 1 like a front seat
The cushion frame 12 can have a slidable structure without reinforcing the connection between the seat back frame 2 and the seat back frame 14.

The reinforcing bar 30 is provided with struts 32, 3
Since the two members are connected to each other, they also serve as a so-called rear strut tower bar, so that the rigidity of the vehicle body can be improved, and it can also function as a reinforcing member at the time of a side collision. Further, the seat back frame 14 is composed of the upper frame 16 and the lower frame 18, and both can be inclined. Therefore, the seat back frame 14 can be bent in the middle of the seat back and can be a comfortable seat.

Next, when it is desired to make the rear seat flat, the nut 38 is removed so that both ends 30a of the reinforcing bar 30 are detached from the struts 32, and the rear bar 30 is removed as shown in FIG.
As shown in the figure, the seat back 62 is tilted to the side of the seat cushion 64 so that the seat back frame 14 is inclined at an angle close to 180 degrees so as to be folded over the cushion frame 12, and the reinforcing bar 30 is further seated. Rotate with respect to the back frame 14 to make it flat. Nut 38 and serration bolt 36
Uses the same nuts and serration bolts for fastening spare tires, so that a user using the same vehicle-mounted tool can perform the attachment / detachment work. In FIG. 7, 6
Reference numeral 6 denotes a middle sheet.

In the present embodiment, by incorporating the seat belt retractor 46 in the reinforcing bar 30, the seat belt retractor 46 can be positioned behind the seat back frame 14 without reinforcing the seat back frame itself. Therefore, a three-point seat belt can be adopted for the central seat of the rear seat. In addition, the net 42 and the parcel 44 are wound up in the reinforcing bar 30 so as to be pulled out when necessary to separate the luggage compartment from the seat, thereby preventing luggage from jumping out, or a parcel cover for partitioning the luggage compartment up and down. Can be used as
These nets 42 and parcels 44 are wound up in the reinforcing bar 30 when not needed, so that they do not take up any space.

Further, the lower side 18 a of the lower frame 18 and the rear side 12
b, and the upper side 18b of the lower frame 18 and the lower side 16a of the upper frame 16 are connected to each other, so that the connecting operation can be easily performed, and these can be configured to have variable inclination angles with respect to each other. Can be. However, it is of course possible to make the inclination angles variable by the pin connection.

The material of the reinforcing bar 30 is preferably a metal in order to securely hold the seat back frame 14 and to improve the rigidity of the vehicle body, but it is preferable to use a synthetic resin or a combination of a metal and a synthetic resin. It can also be configured. In the above-described embodiment, the lower frame 18 of the seat back frame 14 and the cushion frame 12 have variable inclination angles with each other and the lower frame 18
The upper frame 16 and the upper frame 16 are also configured to have a variable inclination angle. However, the present invention is not limited to this. The lower frame 18 and the cushion frame 12 can be configured to have a fixed inclination angle, and only the lower frame 18 and the upper frame 16 can be configured to have a variable inclination angle. In any case, since the cushion frame 12 can be configured to be slidable and the seat back frame 14 is held by the reinforcing bar 30, extensive reinforcement between the seat back frame 14 and the cushion frame 12 can be achieved. Not required.

In this embodiment, the rear seat having the electric slide mechanism has been described. However, it is needless to say that the present invention can be similarly applied to a rear seat having a manual slide mechanism.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a rear seat structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is an explanatory view when a seat back frame and a cushion frame are assembled at a factory.

FIG. 6 is an explanatory view when attaching a reinforcing bar to a strut.

FIG. 7 is an explanatory view showing a state where a rear seat is flattened.

FIG. 8 is a perspective view showing a conventional rear seat structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rear seat 12 Cushion frame 12b Rear edge of cushion frame 12 14 Seat back frame 16 Upper frame 16a Lower edge of upper frame 16 16b Upper edge of upper frame 16 Lower frame 18a Lower edge of lower frame 18 18b Upper edge of lower frame 18 Connector 20a Insertion hole 20b Insertion hole 30 Reinforcement bar 30a Both ends 32 Strut 40 Seat belt 42 Net (member for partitioning baggage) 44 Purcell (member for partitioning baggage) 46 Seat belt retractor 62 Seat back 64 Seat cushion

Claims (7)

[Claims] In a rear seat having a cushion frame for supporting a seat cushion and a seat back frame arranged at an angle to the cushion frame, a reinforcing bar is arranged along a vehicle width direction. Both ends are attached to struts positioned on both sides at the rear of the vehicle body, and the seat back frame is rotatably connected to the reinforcing bar, and is rotatably connected to at least the reinforcing bar. A rear seat structure for an automobile, wherein a portion of the cushion frame has a variable inclination angle with respect to the cushion frame, and the cushion frame is slidably mounted on the vehicle body in a longitudinal direction of the vehicle body. 2. The seat back frame includes an upper frame and a lower frame, and the upper frame and the lower frame are variably connected to each other at an angle of inclination. Car rear seat structure. 3. The vehicle rear seat structure according to claim 1, wherein the reinforcing bar is detachably attached to the strut. 4. The vehicle rear seat according to claim 1, wherein the reinforcing bar has a built-in seat belt retractor, and the seat belt can be pulled out from the reinforcing bar. Construction. 5. The vehicle rear seat structure according to claim 1, wherein the luggage compartment partitioning member is wound inside the reinforcing bar so as to be drawn out from the reinforcing bar. . 6. A lower side of the seat back frame and a rear side of the cushion frame are each formed in a circular cross section, and the seat back frame is connected to the cushion by a plurality of connectors having two insertion holes through which both are inserted. The vehicle rear seat structure according to any one of claims 1 to 5, wherein the rear seat structure is connected to the frame so as to be variable in inclination angle. 7. A lower side of the upper frame and an upper side of the lower frame of the seat back frame are each formed in a circular cross section, and the upper frame and the lower frame are formed by a plurality of connectors having two insertion holes through which both are inserted. 3. The rear seat structure of an automobile according to claim 2, wherein an inclination angle between the vehicle and the vehicle is variably connected.