JP4335754B2 - Seat back board structure - Google Patents

Description

  The present invention relates to a seat back board structure that covers a gap between a seat back and a floor end of a cargo room behind the seat back.

  For cars (vehicles) such as wagons that have a luggage compartment immediately after the rear seat, a reclining structure or a tilted structure is used for the seat back of the rear seat, and the area with the seat back can be used as part of the luggage compartment. Has been done. In general, when the seat back b of the rear seat a is folded from the backrest position c onto the seat cushion d as shown by a solid line as shown by a two-dot chain line in FIG. The space is also structured to be a luggage compartment e.

  By the way, such an automobile in which the luggage compartment e continues behind the rear seat a allows the back and forth movement of the seat back b between the seat back b of the rear seat a and the floor f end of the luggage compartment e behind the rear seat a. In order to do so, a gap g is required. However, if there is a gap g, it does not look good.

  Therefore, in a wagon car or the like, the gap g is covered with a seat back board h. For this purpose, as shown in FIG. 9, two board members i and j that can be opened and closed are combined with a coil spring k that is a biasing part, and the board members i and j are biased in the closing direction. From the state where the seat back b stands up to the folded state, the board member i, j can cover the gap g.

  Conventionally, the urging structure of the seat back board h uses a coil spring k in which the strands p and q protrude in the radial direction from both ends as shown in FIG. 10, and one strand of the coil spring k is used. The end of p is fixed to the inner surface of one board member, here the inner surface of the board member j, with a stopper r, and the end of the other wire q is fixed to the inner surface of the other board member, here the board member j. There is implemented a structure in which a hook portion s attached to the inner surface is slidably locked to apply a biasing force in the closing direction to the two board members i and j. Then, as shown in FIG. 9, the board member j is vertically oriented with respect to the floor end of the cargo compartment e, and here, the board member i is assembled to the vertical wall m of the step down from the floor position of the cargo compartment e. By overlapping the back surface of the seat back b, the gap g is continuously shielded by the board members i and j following the movement of the seat back b in the front-rear direction.

  However, the structure in which the winding portion t of the coil spring k as described above is lifted from the first and second board members i, j and biased is the second movement accompanying the rotation of the seat back b by the movement of the winding portion t itself. In this structure, the first board member i is allowed to rotate while absorbing the difference between the rotation fulcrum of the board member j and the center position of the coil spring k. For this reason, the structure requires a space for allowing movement of the winding portion t as shown by a two-dot chain line or a solid line in FIG.

  However, as shown in FIG. 8, the gap g between the seat back b and the rear floor end is forced to be larger than the original in order to allow for the space necessary for the movement of the coil spring k. The burden that the front-and-rear length of the luggage compartment e is reduced has arisen. Moreover, when the winding portion t moves, the wire q may come off the hook portion s as indicated by the two-dot chain line in FIG. 10 as the winding portion t moves.

  Accordingly, an object of the present invention is to provide a seat back board structure capable of preventing a coil spring from coming off while enlarging a luggage compartment.

In order to achieve the above object, the present invention provides, as a biasing structure, in the vicinity of the center of rotation between the first board member and the second board member along the center of rotation from both ends in the radial direction. Each of the coil springs is disposed with a coil spring protruding therefrom, and the coil spring is fixed to one of the first and second board members in the vicinity of the rotation center by a fixing means. The wire end is supported on one of the first board member and the second board member by the first support means, and the other wire end of the coil spring is slid on the other of the first board member and the second board member by the second support means. The configuration supported as possible was adopted.

According to the present invention, the fixing means, the first supporting means, the second supporting means, and the coil spring are integrated into one bracket part so that the fixing means includes the upper end of the first board member and the second board in the middle. A hinge portion disposed between the lower end of the member and extending from the hinge portion on both sides to the upper end of the first board member and the lower end of the second board member to be assembled to the first and second boat members, respectively. The first support means includes a bracket having a seat portion to which the first support means has a spring mounting portion that is fitted to each portion of the coil spring and is fixed to the same point on the seat portion near the hinge portion. The second support means is formed on the seat on the second board side using a configuration having a locking portion that is formed on the base portion on the first board side and that locks with one end of the coil spring. , The other wire end of the coil spring Using a configuration having a receiving portion that fits slidably.

In the present invention, the wire end of the coil spring before being locked to the locking portion is further provided on the seat portion on the second board side so that the first and second board members can be easily assembled to the bracket component. The structure which has the receiving surface for receiving, and the wall part which controls the received strand end from the opposite side to a hinge part was used.

According to the present invention, the biasing structure allows a difference between the rotation center of the first and second board members and the center position of the coil spring while the coil spring is fixed in the vicinity of the rotation center of the board member. Therefore, the gap between the seat back and the cargo floor floor can be minimized, and the cargo space can be enlarged. In addition, since the coil spring continues to be fixed at a fixed position, the spring does not come off and brings about high reliability.

According to the present invention, each part necessary for urging is gathered in one bracket, so that the urging structure is assembled to the seat back board only by combining the bracket and the first and second board members. It is possible to reduce the work man-hours.

According to the present invention, when assembling the first and second board members and the bracket, if the receiving end of the coil spring is received by the receiving surface, each seat portion of the bracket becomes the wall portion and the end of the strand. Therefore, the first and second board members can be easily assembled and the assembly of the seat back board can be improved.

[One Embodiment]
Hereinafter, the present invention will be described based on an embodiment shown in FIGS.

  FIG. 1 shows a vehicle interior on the rear side of an automobile (vehicle), for example, a wagon type automobile. In FIG. 1, 1 is a floor panel extending in the front-rear direction of a vehicle body (not shown), and 2 is the floor panel. 1 is a rear seat (corresponding to the seat of the present application) installed on the rear side of 1;

  The rear seat 2 is configured by assembling an upright seat back 4 on a rear portion of the seat cushion 3 via a folding mechanism portion and a reclining mechanism portion 3a. Then, the seat back 4 is similarly operated from the backrest position α indicated by the solid line in FIG. 1, for example, by the operation of an operation part (operation lever, operation knob, etc.) attached to the folding mechanism part or the reclining mechanism part 3a. It is configured to be movable to a forward tilt position β that overlaps with the seat cushion 3 indicated by a two-dot chain line.

  Behind the rear seat 2 is, for example, a cargo compartment 5 with the cargo panel 1a set on the upper side of the floor panel 1 as a floor. When the seat back 4 is folded forward, the cargo compartment space is expanded. is there.

  In addition, a seat back board 10 that covers a gap A (shown in FIG. 8) between the seat back 4 and the cargo panel 1a end (corresponding to the cargo compartment floor end) is set behind the rear seat 2.

  As shown in FIG. 2, the seat back board 10 includes a board member 12 disposed in a vertical direction with respect to the end of the cargo panel 1 a, and a seat back board that is rotatably supported with respect to the upper end portion of the board member 12. 4 and a board member 13 disposed so as to overlap the lower part of the back surface. The board members 12 and 13 are both formed in a strip shape extending in the vehicle width direction. In this embodiment, the board member 12 is fixed to the floor panel 1 by using a leg portion 12a formed at the lower end portion of the board member 12. And the board member 13 is rotatably supported by the upper end part of the board member 12 via the several hinge module 15 (equivalent to the urging | biasing structure of this application).

  Each of these hinge modules 15 has a function of pressing the board member 13 against the back surface of the seat back 4. All of the hinge modules 15 having this function have the same structure, and the structure of one representative hinge module 15 is shown in FIGS.

  The hinge module 15 will be described. In the figure, reference numeral 16 denotes a synthetic resin bracket, for example. The bracket 16 includes, for example, a strip-shaped intermediate portion 17 that is thicker than the board members 12 and 13, and a pair of plate-like base portions 18 that extend from both sides (up and down) of the intermediate portion 17. Each pedestal portion 18 is formed thinner than the intermediate portion 17, and a board end incorporating portion 19 is formed at a stepped portion on the rear side of the pedestal portion 18. Reference numeral 20 denotes a fixing hole or boss for fixing the board end.

In the middle of the intermediate portion 17 (in the vertical direction here), a hinge portion 21 made of a strip-like thin portion extending in the vehicle width direction is formed, and a portion 21a formed by the thinnest portion of the thin portion is used as a fulcrum. The entire bracket 16 can be rotated. A pair of seat portions 22 is formed by the base portion 18 including a part of the intermediate portion 17 on both sides of the hinge portion 21. Then, the board end embedded portion 19 of the base portion 18, on the end portion of each board member 12, the lower end is housed in the board member 13, by a fixing means using the fixing holes and the boss (such as crimping), Each board member 12, 13 is fixed to each seat portion 22. Thus, the board member 13 is rotatably supported by the board member 12 and covers the entire gap A from the outside in cooperation with the board member 12. Note that the back surfaces (surfaces exposed in the vehicle compartment) of the board members 12 and 13 including the intermediate portion 17 are covered with a skin 35.

  A spring mounting portion 23 is formed in a seat portion in the vicinity of the hinge portion 21, for example, in an intermediate portion 17 portion on the board member 12 side adjacent to the hinge portion 21. A biasing coil spring 24 is mounted on the spring mounting portion 23.

  Here, as shown in FIG. 4, the coil spring 24 includes a winding portion 25 a around which the coil strand 25 is wound many times, and wire ends protruding in the radial direction from both ends of the winding portion 25 a. It has the parts 26 and 27, and is comprised. For example, the left strand end portion 26 has a configuration in which, for example, the middle is projected outward in the radial direction, and the tip is bent in an L shape toward the axial center inward. The end portion 27 has a configuration in which the middle is inclined so as to be inclined inward in the radial direction and the tip is bent in an L shape toward the inner side in the axial direction.

  As shown in FIGS. 3 to 5, the spring mounting portion 23 includes a pair of elongated spring fitting recesses 28 formed in the intermediate portion 17 along the fulcrum of the hinge portion 21, and a pair of protrusions protruding from both end walls of the recess 28. A structure in which the boss portion 29 is combined is used. The coil spring 24 is fixed in the concave portion 28 by a method in which the boss portion 29 is inserted into the gap portions at both ends of the winding portion 25 a and the entire winding portion 25 a is fitted in the concave portion 28. That is, the coil spring 24 is fixed to the board member side (the board member 12 in this embodiment) via the bracket 16 (corresponding to the fixing means of the present application).

  On the other hand, a groove 30 is formed on one side of the upper base 18, for example, the left plate surface portion, along the opening / closing direction of the board members 12 and 13 as shown in FIGS. 3 to 5. Further, the front end side of the groove portion 30 is open to the back surface of the base portion 18. A sliding recess 31 (corresponding to the accommodating portion) is formed at the opening edge on the right side of the opening 30a. And the front-end | tip part (front-end | tip of a L-shaped part) of the left strand end part 26 is slidably stored in the recessed part 31 through the opening part 30 above the notch part 28a formed in the wall surface of the recessed part 28. . That is, the left strand end portion 26 is slidably supported on the board member side.

  On the other side of the upper base 18, for example, on the right plate surface portion, an L-shaped groove portion 32 is formed in the shape of the right strand end portion 27 as shown in FIGS. 3 to 5. . This groove portion 32 is a portion for accommodating the wire end portion 27 before applying a predetermined urging force (normal state). As shown in FIGS. 3 and 5, the groove portion 32 receives the wire end portion 27 before applying an urging force at the bottom surface 33 (corresponding to the receiving surface of the present application) of the groove portion 32, and The wall 34 has a function of regulating the same wire end portion 27 from the side opposite to the hinge portion 21. Thereby, the work for assembling the board members 12 and 13 and the work for attaching the skin 35 (shown in FIGS. 2, 7 and 8) to the surface of the board members 12 and 13 after the assembly can be easily performed. The bracket 16 can also be constrained in a predetermined deployed posture, in this case, a posture in which the pair of base portions 18 are arranged in a straight line (in order to perform board assembly while suppressing bending at the hinge portion 21). . A rib-shaped barrier 34a rises from a part of the vertical wall 34, and has a structure that ensures a predetermined deployment posture even when a large impact is applied. However, 28b shows the notch part formed in the wall surface of the recessed part 28 in order to let the strand end part 27 stored in the groove part 32 pass.

  On the other hand, on the other side of the lower pedestal 18, for example, the right side plate surface portion, as shown in FIGS. 3 to 5, it extends along the opening / closing direction of the board member 13 from the right end portion of the recess 28. An elongated groove portion 36 having a portion penetrating the back surface of the base portion 18 is formed in the portion. Further, a hook portion 37 (corresponding to the locking portion of the present application) formed of, for example, an L-shaped protrusion is formed near the tip of the groove portion 36. The front end portion of the right strand end portion 27 is locked to the hook portion 37. This locking is performed at the time of assembling the right side wire end portion 27 arranged in the groove portion 32 to the vehicle body of the seat back board 10 from the beginning, that is, until the step of assembling the board and attaching the skin 35. As shown by the arrow in FIG. 6, it is performed by rotating to the opposite base 18 (lower side). By this engagement, the remaining right-side wire end portion 27 is fixed to the board member side, and the upper board member 13 is attached to the seat back 4 by the spring force generated at this time (by twisting the winding portion 25a). It is urged to the back and pressed down.

  The immobile (fixed) coil spring 24 allows the difference between the rotation center of the hinge portion 21 (rotation center of the board members 12 and 13) and the center position of the coil spring 24 (winding portion 25a), while the upper side. The board member 13 keeps covering the gap A behind the seat back 4.

  That is, in the state where the seat back 4 shown by the solid line in FIG. 1 is positioned at the backrest position α, the board member 13 has the winding portion 25a at a fixed position (near the hinge portion 21) as shown in FIG. The right strand end portion 27 is fixed to the stationary board member 12 and the left strand end portion 26 is slid in the direction approaching the hinge portion 21 to absorb the difference from the center position of the winding portion 25a. In this state, the coil spring 24 is pressed against the back surface of the seat back 4 by the spring force (biasing force) of the coil spring 24. This covers the gap A.

  Further, when the seat back 4 is folded forward as shown by a two-dot chain line in FIG. 1, the board member 13 has the winding portion 25a in a fixed position (near the hinge portion 21) and the right side element as shown in FIG. With the wire end portion 27 fixed to the board member 12 and the left wire end portion 26 slidingly displaced away from the hinge portion 21 to absorb the difference from the center position of the winding portion 25a, the hinge portion 21 is While being rotationally displaced to the fulcrum, the coil spring 24 is pressed against the back surface of the folded seat back 4 by the spring force (biasing force). Accordingly, the gap A is continuously covered and hidden by the movable board member 13.

  That is, the gap A is continuously covered by the board member 13 (movable side) while the coil spring 24 is fixed in the vicinity of the pivotal fulcrum (hinge portion 21) of the board members 12 and 13.

  Therefore, the element which enlarges the dimension of the gap A is eliminated, and the cargo panel end can be brought closer to the seat back 4, and the dimension (front and rear length) of the luggage compartment 5 in the state where the seat back 4 is raised is enlarged. Can be made. Moreover, since the coil spring 24 does not move, it is possible to prevent the coil spring 24 from being detached. In particular, the structure in which the coil spring 24 is supported by sliding is provided not on the fixed-side board member 12 but on the movable-side board member 13 where the load acts from a certain direction. It does not occur.

  Further, in the structure for urging the movable board member 13, the module parts in which the parts necessary for urging are aggregated are used for one bracket 16 assembled to the board members 12, 13, so the number of parts is small. The work of assembling the board members 12 and 13 (the work of assembling the seat back board 10) is simple, and the number of work steps can be reduced. In addition, since the synthetic resin bracket 16 is employed, the cost burden can be reduced.

  In addition, in order to improve the difficulty of assembling the board members 12 and 13 to the module parts, a structure that restrains the board members 12 and 13 to a predetermined deployment posture is formed. Therefore, the board members 12 and 13 can be easily assembled. This also allows the seat back board 10 to be assembled.

  The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. In the embodiment, the structure in which the coil spring is fixed to the fixed board member is described. However, the structure is not limited thereto, and a structure in which the coil spring is fixed to the movable board member may be used. In one embodiment, a structure is provided in which a seat back board is provided at the end of the cargo panel. Alternatively, the structure of the floor end of the luggage compartment is not limited.

The perspective view which shows the seat back board structure which concerns on one Embodiment of this invention with the vehicle to which the structure is applied. The perspective view which decomposed | disassembled the seat back board structure. The figure which shows each part of the urging | biasing structure modularized of the seat backboard structure. The exploded perspective view of the energizing structure. The perspective view which shows until the same biasing structure is assembled | attached to a board member. The perspective view explaining making the same urging | biasing structure into the state which generate | occur | produces urging | biasing force. Sectional drawing which shows the state of the urging | biasing structure when a seat back stands up. Sectional drawing which shows the state of the urging | biasing structure when a seat back is folded forward. Sectional drawing for demonstrating the conventional seat back board structure. The perspective view for demonstrating the urging | biasing structure of the seat back board.

Explanation of symbols

  2 ... rear seat, 4 ... seat back, 10 ... seat back board, 12 ... board member (first board member), 13 ... board member (second board member), 15 ... hinge module (biasing structure), 16, 21 , 22, 23 ... bracket, hinge part, seat part, spring mounting part (fixing means), 31 ... concave part (accommodating part, second support means), 24 ... coil spring, 33 ... bottom face (receiving surface), 36 ... vertical Wall (wall portion), 37... Hook portion (locking portion, first support means), A.

Claims (1)

A first board member to be assembled in the longitudinal direction rotatable sheet configured with a seat back, a floor end of the formed loading chamber immediately after the seat back,
It is arranged so as to overlap the back surface of the seat back, and the lower end is rotatably supported by the upper end of the first board member, and the seat back and the floor end are cooperated with the first boat member. A second boat member obscuring a gap therebetween;
An urging structure for urging the second board member in a direction of pressing the back surface of the seat back;
The biasing structure is
Coil springs in which the strands protrude in the radial direction from both ends arranged along the rotation center in the vicinity of the rotation center between the first board member and the second board member,
The coil spring is fixed at any point of the first and second board members in the vicinity of the rotation center , and a hinge part, an upper end of the first board member from the hinge part, and the second A fixing means having a seat portion extending to a lower end of the board member and assembled to each of the first and second boat members ,
First support means formed on a seat portion on the first board member side and having a locking portion that locks with one end of the coil spring ;
A second support means for supporting the other wire end of the coil spring to the second board member,
Have,
The seat portion on the second board member side has a receiving surface for receiving a wire end of the coil spring before being locked to the locking portion .

Images