JP2008179287A - Vehicle seat structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat structure having a backrest so as to easily open/close a seat to use an article box under the seat. <P>SOLUTION: The article box 4a is provided below a front seat part 4, and an article is taken out of/taken in the article box 4a by opening/closing the front seat part 4. A backrest 6 is independently provided behind the front seat part 4, and supported on a pedestal part 7 which is integrally raised from a floor panel in a longitudinally slidable manner. When the backrest 6 is used, the backrest 6 is located above a rear end of the front seat part 4 so that the front seat part 4 is not opened. When the front seat part 4 is opened, the backrest 6 is allowed to slide backwardly and separated from the front seat part 4 to freely open/close the front seat part 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a backrest structure provided on a driver's front seat, and more particularly to an improved seat operability that facilitates opening and closing of a seat when an article is taken in and out from a container under a seat.

A vehicle is disclosed in which a storage box is provided below the seat and a backrest is provided behind the seat (see Patent Document 1). In such a vehicle, since the optimal positions of the seat and the backrest differ according to the physique of the driver, a mechanism for moving the seat back and forth is provided (see Patent Document 2).
JP 2006-8104 A Japanese Utility Model Publication No. 4-16032

In general, the conventional sheet adjustment mechanism has a complicated structure and becomes a heavy object, so that the number of parts and the weight of the sheet increase and the cost becomes high. Therefore, what has a simple structure and can be made lightweight and inexpensive is desired.
Moreover, even if the backrest is provided separately from the seat side, the original purpose of the backrest is to support the driver's waist, etc., so it is necessary to place the backrest close to the seat. In the case of adopting a form that opens and closes the door, it has been required to provide a backrest so as not to bother to open and close the seat. Therefore, the present application aims to realize such a request.

In order to solve the above-mentioned problem, the invention according to claim 1 relating to a vehicle seat structure is provided with a seat part and a backrest, and a container is provided below the seat part, and the container is opened and closed by opening and closing the seat part. In the seat structure,
A backrest configured separately from the seat part is supported on the body body part behind the seat part, and the position can be adjusted in the front-rear direction.
The position of the backrest can be adjusted between a position where the seat rests above the seat and a retracted position removed from the seat, and the seat can be opened and closed at the retracted position of the backrest. .

According to a second aspect of the present invention, in the first aspect, the position adjusting mechanism of the backrest is engaged with and disengaged from a groove row in which a plurality of lock grooves are formed in a line in the front-rear direction, and the lock groove of the groove row. A lock device is configured with a lever provided with a claw extending in a direction orthogonal to the advancing / retreating direction (hereinafter referred to as a lateral direction),
The lever is provided on the backrest side, and the groove row is provided directly on a vehicle body part on which the backrest is supported.

According to a third aspect of the present invention, in the first aspect, the position adjustment mechanism of the backrest includes a rail member provided at a lower portion of the backrest so that a longitudinal direction thereof is along a vehicle front-rear direction.
The rail member is provided as a recess having substantially the same width as the rail member, and includes a rail guide for restricting the movement of the rail member in the left-right direction, and the rail guide is provided directly on the vehicle body.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, a shaft member that rotatably supports the lever member is provided in the lower portion of the backrest, and the lever member is biased to the shaft member in the engaging direction of the claw. A spring is provided.

According to a fifth aspect of the present invention, in the third aspect, the backrest includes a grip, and the grip is fixed to the vehicle body side in the rail guide, and the rail member is pressed by the fixing portion. .

Only the backrest is slidable back and forth, and the sliding range is between the position overlapping the seat and the position retracted backward from the seat, and the backrest is detached from the seat at the retracted position. By making it possible to open and close,
When the backrest is retracted and separated from the seat, the seat can be opened and closed to use the container. At this time, it is only necessary to open and close only the seat portion, so opening and closing of the case becomes easy. When the container is not used, the backrest can be moved forward and moved onto the seat so that it can be moved to the optimum position for occupant support.
For this reason, it is possible to simultaneously adjust the optimal backrest position according to the comfortable use of the container and the physique of the driver.
Further, since the slide mechanism is provided only on the backrest on the vehicle body side, the weight is light and the adjustment work becomes easy.

  Since the nail is provided in the lateral direction, the strength can be easily secured by extending the width of the nail. In addition, since the row of grooves is provided directly on the vehicle body, the vehicle body can be used as a part of the position adjustment mechanism, and the number of parts can be reduced and the cost can be reduced accordingly. . Further, by providing a lever member on the backrest, it is possible to easily engage and disengage the lock by operating the lever up and down, and it is possible to provide a backrest that is easy to adjust in the front and rear direction.

  Since the rail guide for restricting the lateral movement of the rail member can be formed integrally with the vehicle body portion, the position adjusting mechanism can be made compact using the vehicle body portion.

  Since a shaft member that rotatably supports the lever member is provided at the lower portion of the backrest, and a spring that urges the lever member in the engaging direction of the claw is provided on this shaft member, the lever engagement mechanism can be configured with a simple configuration. Can be made.

Since the grip is fixed to the vehicle body side in the rail guide and the rail member can be pressed by this fixing portion, the number of parts can be reduced.

  An embodiment will be described below with reference to the drawings. In the following description, the upper and lower sides and the front and rear sides are based on the state shown in FIG.

  FIG. 1 is a side view of a small four-wheeled vehicle according to the present application. This vehicle includes a front wheel 2 and a rear wheel 3 before and after a body frame 1 and a front wheel steering mechanism 5 in front of a front seat portion 4 for a driver D provided in the center of the vehicle body. The front seat is composed of a front seat portion 4 and a backrest 6. The front seat portion 4 is supported on a storage case 4a, and a front end is rotatably attached by a hinge 4b, and the front seat portion 4 is opened. Then, the opening of the container 4a is opened so that articles can be put in and out. The container 4a is large enough to accommodate a large article such as a helmet.

A backrest 6 formed separately is supported behind the front seat portion 4 on a pedestal portion 7 raised from the floor panel and is slidable in the front-rear direction. A center grip 8 extends rearward from the backrest 6 so that the passenger P can grip it when sitting and getting on and off.
A side grip 9 and a rear seat 10 are provided behind the backrest 6.

A power unit 11 is provided below the seat portion of the rear seat 10, and the rear wheel 3 is driven by the power unit 11.
The power unit 11 is swingably supported on the vehicle body frame 1 by a link (not shown) and is of a fuel injection (FI) type. A fuel tank 13 is disposed behind the container 4a. 14 is a fuel pump, and 15 is an air cleaner.

A front portion of the vehicle body is covered with a front cover 16, and a part thereof forms a front fender and covers the front wheel 2 from the front side and from the upper side to the rear side. The front part of the vehicle interior is covered with the inner panel 18 and the side part covers the side of the driver's D leg part. 19 is a mirror and 20 is a bar handle. The bar handle 20 forms part of the front wheel steering mechanism 5 and is steered by the driver D behind the upper part of the inner panel 18. The vehicle compartment is covered with a windscreen 21 at the front and a roof 22 at the top. The front portion of the roof 22 is supported by a front pillar 23 inclined rearward, and the wind screen 21 is also supported by the front pillar 23. The rear portion of the roof 22 is supported by a substantially upright rear pillar 24. The lower ends of the front pillar 23 and the rear pillar 24 are supported on the body frame 1 side.
Reference numeral 29 denotes a rear cover. A part of the rear cover 29 forms a rear fender 29a and covers the rear side from the front side and the upper side of the rear wheel 3.

  FIG. 2 is a plan view of the vehicle (the wind screen 21 and the roof 22 are omitted). The front wheel 2 and the rear wheel 3 are provided as a pair of left and right. The rear seat 10 is sized so that two people can be seated side by side to the left and right, and the occupants of the rear seat 10 can put their feet on the floor panel 30 on the side of the front seat portion 4. The front wheel steering mechanism 5 and the front seat portion 4 are disposed on the vehicle body center line C, and the bar handle 20 extends in the left-right direction and is operated with both hands of the driver D. The front seat portion 4 is located at the approximate center of the floor panel 30.

  The side grips 9 are provided on the left and right sides of the center grip 8 and cross the front and right sides of the passenger P so that the passenger P can be gripped when seated. The side grip 9 is rotatably supported at one end on the armrest 28, and can be rotated so that the other end on the inner side of the vehicle body jumps upward around a connecting shaft with the armrest 28 when getting on and off (FIG. 1). reference).

  FIG. 3 is a side view of the vehicle body frame 1. The vehicle body frame 1 includes a side beam 31 extending substantially linearly in the front-rear direction, an oblique beam 32 extending obliquely upward from the front portion, an oblique beam 33 extending obliquely upward and rearward from the rear portion, and these oblique beams and side beams. Reinforcing members 34 and 35 extending in a substantially vertical direction by connecting 31, a front bumper portion 36 provided between each front end of the side beam 31 and the front oblique beam 32, and a seat rail portion supported by the upper end of the oblique beam 33 37 etc.

FIG. 4 is a plan view of the main frame portion. The side beam 31, the oblique beam 32, the oblique beam 33, and the seat rail 37 are arranged in parallel in a pair of left and right, and the front end portions of the left and right oblique beams 32 are connected by a first cross member 41, and the left and right side beams 31 are connected. The space is connected by a second cross member 42, a third cross member 43, and a fourth cross member 44 in order from the front. The left and right seat rails 37 are also connected by front and rear cross pipes 45a and 45.
The center portion of the second cross member 42 is divided by the center beam 46, and the center beam 46 extends forward and is connected to the lower portion of the front bumper portion 36.

  The third cross member 43 and the fourth cross member 44 are connected by a pair of left and right pipe members 47, 47, and a space 48 surrounded by the third cross member 43, the fourth cross member 44, and the left and right pipe members 47, 47. The fuel tank 13 is accommodated and supported therein, and the FI unit 12 and the fuel pump 14 are disposed on the fuel tank 13. A battery 49 which is an electrical component is accommodated in front of the fuel tank 13 in the space 48 and supported by the center portion of the third cross member 43. Further, an arm portion 38 a extends upward from the fuel tank 13 from an intermediate portion in the vertical direction of the pillar portion 38.

FIG. 5 shows a perspective view of the backrest 6. The backrest 6 is provided so as to be slidable back and forth on a pedestal portion 7 provided behind the front seat portion 4 and is independent of the front seat portion 4. Reference numeral 50 denotes a pad portion that supports the waist of the occupant D, 8 denotes a center grip, and 51 denotes a lock lever. The center grip 8 and the lock lever 51 protrude rearward from the rear portion of the backrest 6.
The front wall of the pad portion 50 forms a curved surface that is convexly curved backward as a contact surface of the driver D.

  FIG. 6 is a perspective view illustrating the inside of the backrest 6. 52 is a cross pin provided at the tip of the lock lever, 53 is a lock spring, 54 is a rotation center shaft, 55 is a lock groove, 56 is a guide rail, and 57 is a cross rod.

The center grip 8 has a substantially U-shape in plan view composed of a center grip portion 8a and left and right arm portions 8b, and the tip of each arm portion 8b has a substantially U-shaped fixed portion 58 opened upward, A through hole 58a is provided at the bottom. The fixing portion 58 overlaps the guide rail 56.
The lock lever 51 has a substantially U-shape in plan view so as to be accommodated inside the center grip 8, and the grip portion 60 is formed at the center and the arm portion 61 is formed at the left and right. A groove 62 opened forward is formed between the left and right arm portions 61.

  FIG. 7 is a view showing the backrest 6 from the rear and obliquely below. A boss 63 is provided at the tip of each of the left and right arm portions 61, and is rotatably supported by a rotation center shaft 54 supported at both ends by a support portion 65 formed on the bottom plate 64 of the backrest 6. .

  Between the arm portions 61 in the vicinity of the boss 63, the cross pin 52 is stretched across and is urged by the lock spring 53 supported by the rotation center shaft 54 so that the grip portion 60 side is rotated downward. In this example, it is a coil spring, its both ends 53 a push the cross pin 52, and the intermediate non-winding part 53 b pushes the bottom plate 64. A lock claw 66 is integrally formed in the vicinity of a portion bent at the grip portion 60 at the rear portion of the left and right arm portions 61. In this example, two lock claws 66 are formed in parallel with the width direction so as to fill the width of the arm portion 61.

  The guide rails 56 are provided in a pair of left and right, have a substantially U-shaped cross-section opened upward so as to fit the fixing portion 58, and a slide hole 67 is formed at the center in the longitudinal direction. Each front end of the guide rail 56 is fastened and fixed to a boss 64 a of the bottom plate 64 by a bolt 69 via a rubber 68. The front end portions of the left and right guide rails 56 are connected by a cross rod 57 so as to slide integrally.

  FIG. 8 is a perspective view showing the top surface 7 a of the pedestal portion 7. On the center side of the top surface 7a, a predetermined number of lock grooves 55 are formed in the front-rear direction in two rows on the left and right sides of the center line. The lock groove 55 is formed in a horizontally long shape similar to that of the lock claw 66 so that the lock claw 66 is engaged, and the adjacent interval coincides with the space between the front and rear lock claws 66.

  Concave portions 70 are provided on both the left and right sides of the top surface 7a, and through holes 71 are provided in the front and rear sides thereof. The periphery of the through hole 71 is surrounded by an annular wall 72 that rises from the bottom of the recess 70. The outer diameter of the annular wall 72 is larger than the groove width of the slide hole 67. The guide rail 56 is fitted in the recess 70.

  FIG. 9 is an enlarged cross-sectional view showing a slide mechanism portion. The guide rail 56 is fitted into the recess 70 and is placed on the annular wall 72. Since the outer diameter of the annular wall 72 is larger than the width of the slide hole 67 provided in the guide rail 56, the guide rail 56 is positioned on the annular wall 72. The collar 73 is passed through the slide hole 67 and the annular wall 72. Further, a nylon washer 74 is disposed around the upper portion of the collar 73, the fixing portion 58 is placed thereon, the through hole 58a is aligned with the through hole 71, and the bolt 75 is passed from above to project downward from the bottom of the recess 70. Then, it is fastened to a nut 77 that is welded and integrated with a bracket 76 that is previously stacked on the bottom of the recess 70. The bracket 76 is attached to the upper end portion of the pillar portion 38 (see FIG. 4).

  As a result, the center grip 8 and the backrest 6 are fastened together with the bolts 75 onto the top surface 7 a of the backrest 6. At this time, since the backrest 6 is provided with the slide hole 67 in the guide rail 56, the backrest 6 can be slid forward and backward in the recess 70. On the other hand, the center grip 8 is fixed to the vehicle body frame side by the bolts 75 with the fixing portion 58 via the top surface 7a and the bracket 76, and does not move even if the backrest 6 slides. Therefore, the passenger P can be gripped when sitting and getting on and off.

FIG. 10 is a cross-sectional view of the center of the backrest 6 cut along the front-rear direction.
The pad portion 50 of the backrest 6 is configured by covering the sponge material 80 with a skin 81, and a bottom plate 64 having a substantially trapezoidal shape in a side view is provided inside the sponge material 80 in a raised shape.
The backrest 6 is slid in a stepped manner at the interval of the lock groove 55 and the position in the front-rear direction is adjusted. When the driver D of the front seat portion 4 uses the backrest 6, the backrest 6 is slid forward to overlap the rear portion of the front seat portion 4. The solid line position indicates the last retracted state that can be locked, and the position indicated by the phantom line A indicates a further advanced state.

  When the front seat portion 4 is opened, when the lock is released and the backrest 6 is fully slid rearward, the front end of the backrest 6 moves away from the rear end of the front seat portion 4 as indicated by the phantom line B. In this state, the front seat portion 4 can be opened by rotating forward about the hinge 4b (FIG. 1), allowing articles to be taken in and out of the container 4a (FIG. 1). A curved line T in the drawing is a turning locus at the rearmost end portion of the front seat portion 4, and when the backrest 6 interferes with the turning locus T and the position of the solid line, the front seat portion 4 has the backrest 6. It cannot be opened because it is located above. If the backrest 6 deviates from the rotation trajectory T as shown in B, the front seat portion 4 can be opened.

The lock lever 51 is formed of an appropriate hard material such as nylon resin containing glass fiber, and a stopper projection 82 is integrally formed on the front end portion of the arm portion 61 so as to protrude upward. When unlocking and rotating counterclockwise, the rotation is stopped by contacting the bottom plate 64 at a predetermined angle. As shown in the enlarged portion in the drawing, the lock claw 66 and the lock groove 55 are separated from each other vertically, the lock claw 66 has a sawtooth shape, the front side has a rear inclined surface, and the rear side has a substantially right angle.
On the other hand, the lock groove 55 is integrally formed directly on the top surface 7a, and the projection 83 formed between the adjacent lock grooves 55 has a sawtooth shape symmetrical to the lock claw 66, and the front side has a substantially vertical surface. The rear side forms a front inclined surface.

  FIG. 11 is a plan view of the floor panel 30, and the pedestal portion 7 is formed so as to be raised behind the central case 4 a. The plurality of lock grooves 55 are formed on the top surface 7a as a plurality of groove rows 84 arranged in a line in the front-rear direction at regular intervals.

  FIG. 12 is a cross section taken along line 12-12 of FIG. 11, and FIG. 13 is a cross section of 13-13. As shown in these figures, the recess 70 is lowered from the periphery to form a slide guide for the guide rail 56. Yes.

Next, the operation of this embodiment will be described. As shown in FIG. 10, only the backrest 6 can be slid forward and backward, and the sliding range is between the position overlapping the seat 4 and the position retracted rearward from the seat 4 so that the backrest 6 When 6 is retracted to the position indicated by B, the seat 4 can be opened and closed away from the seat 4 and the container 4a can be used. At this time, since only the seat portion 4 needs to be opened and closed, the opening and closing of the container 4a is facilitated. Further, when the container 4a is not used, the backrest 6 can be moved forward and moved onto the seat portion 4, and adjusted and moved to the optimum position for the support of the driver D.
For this reason, it becomes possible simultaneously to adjust the optimal backrest position according to comfortable use of the container 4a and the physique of the driver D.
Further, since the slide mechanism is provided only on the backrest 6 on the vehicle body side, the weight is light and the adjustment work becomes easy.

  Furthermore, since the claw 66 and the lock groove 55 are respectively provided in the lateral direction that is the vehicle width direction of the arm portion 61 and the book surface 7a, the strength can be easily ensured by extending the width of the claw 66 and the lock groove 55. Further, since the groove row 84 is provided directly on the pedestal portion 7 which is the vehicle body portion, the vehicle body portion can be used as a part of the position adjustment mechanism, and the number of parts can be reduced and the cost can be reduced accordingly. It can be configured compactly. Further, by providing the lock lever 51 on the backrest 6, it is possible to easily engage and disengage the lock by operating the lock lever 51 up and down, and the backrest 6 that can be easily adjusted in the front-rear direction can be provided.

Further, since the concave portion 70 that is a rail guide that restricts the lateral movement of the guide rail 56 can be directly and integrally formed on the top portion 7a of the base portion 7 that is the body portion of the vehicle body, the position adjustment mechanism can be made using the vehicle body portion. Compact configuration is possible.
In addition, a rotation center shaft 54 that rotatably supports the lock lever 51 is provided below the backrest 6, a lock spring 53 is provided on the rotation center shaft 54, and the lock pin 52 provided on the lock lever 61 is connected to the lock spring. Since the lock lever 61 is urged in the engaging direction of the claw 66 by pushing at 53, the engaging mechanism of the lock lever 51 can be made with a simple configuration.

In addition, the fixing portion 58 to which the arm portion 8a of the center grip 8 is attached is placed on the guide rail 56 fitted into the recess 70 that forms the rail guide, and the base portion 7 and the vehicle body frame are passed through the slide hole 67 of the guide rail 56. By fastening together with the guide rail 56 to the side, it can function as a pressing member for the guide rail 56 at the same time as the center grip 8 is fixed, and the number of parts required for fixing the center grip 8 and fixing the guide rail 56 can be reduced.

Side view of a motorcycle according to an embodiment Top view showing the interior of the car Side view of body frame Plan view Perspective view of backrest Perspective view of the inside of the backrest seen through The figure which shows a backrest from back and slanting lower part Perspective view showing the top surface of the pedestal Expanded sectional view showing the slide mechanism Sectional view of the center of the backrest cut along the longitudinal direction Floor plan of floor panel Section 12-12 in FIG. 13-13 cross section of FIG.

Explanation of symbols

4: Front seat part, 4a: Case, 6: Backrest, 7: Raised part, 8: Center grip, 10: Rear seat, 50: Pad part, 51: Lock lever, 52: Cross pin, 53: Lock spring, 54 : Rotation center axis, 55: lock groove, 56: guide rail, 57: cross rod, 64: bottom plate, 66: lock claw

Claims (5)

In a vehicle seat structure that includes a seat and a backrest, and that is provided with a container below the seat and opens and closes the container by opening and closing the seat,
A backrest configured separately from the seat part is supported on the body body part behind the seat part, and the position can be adjusted in the front-rear direction.
The position of the backrest can be adjusted between a position where the seat rests above the seat and a retracted position removed from the seat, and the seat can be opened and closed at the retracted position of the backrest. Vehicle seat structure. The position adjustment mechanism of the backrest is provided with a groove row in which a plurality of lock grooves are formed in a line in the front-rear direction, and a claw that is engaged with and disengaged from the lock groove of the groove row and extends in a direction perpendicular to the advancing / retreating direction. The lever is a locking device,
2. The vehicle seat structure according to claim 1, wherein the lever is provided on the backrest side, and the groove row is provided directly on a vehicle body part on which the backrest is supported. The position adjustment mechanism of the backrest includes a rail member provided at a lower portion of the backrest so that a longitudinal direction thereof is along a vehicle front-rear direction,
A rail guide that is provided as a recess having substantially the same width as the rail member, and that regulates the movement of the rail member in the left-right direction, is provided directly on the vehicle body. The vehicle seat structure described. 3. A shaft member that rotatably supports the lever member is provided at a lower portion of the backrest, and a spring that urges the lever member in an engaging direction of the claw is provided on the shaft member. The vehicle seat structure described in 1. 4. The vehicle seat structure according to claim 3, wherein the backrest includes a grip, and the grip is fixed to a vehicle body side in the rail guide, and the rail member is pressed by the fixing portion.

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