JP3615071B2 - Hinge cover structure for automotive seat device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat device mounted on an automobile, and more particularly to a cover structure of a hinge member that constitutes a forward-turning mechanism that supports a seat back so that the seat back can be pivoted between a standing position and a forward-turning position. .
[0002]
[Prior art]
In general, in a seat device mounted in an automobile, the back of the seat back may be used as a loading platform or a table by tilting the seat back forward on the upper surface of the seat cushion. In this type of seat device, for example, as shown in FIG. 7, a structure in which a seat cushion 80 and a seat back 81 are connected by a hinge member 82 of a forward tilting mechanism is common.
[0003]
This forward-turning mechanism is configured to fix the seat back 81 to a predetermined standing position during normal sitting, and to release the fixation and turn the seat back 81 forward during forward-turning. A resin cover 83 is mounted on the outer surface of the hinge member 82.
[0004]
[Problems to be solved by the invention]
By the way, depending on the structure of the forward folding mechanism, a part of the hinge member 82 may protrude from the rear end surface 81a of the seat back 81 toward the rear of the vehicle, and a pin (not shown) is projected on the protruding portion 82a of the hinge member 82. A hole 84 for guiding a member or the like may be formed. In such a case, since the inner side surface of the protruding portion 82a of the hinge member 82 is exposed in the vehicle interior, there is a problem that the appearance is deteriorated, and when a foreign object enters from the hole 84, the forward moving mechanism is activated. May cause defects.
[0005]
In order to eliminate such appearance and malfunction problems, for example, as shown in FIG. 8, the hole 84 of the hinge member 82 is covered with a pair of rubber fins 85, 85, or as shown in FIG. It is conceivable to cover with brushes 86 and 86. It is also conceivable to cover the inner surface of the protrusion 82a with a cover.
[0006]
However, when the rubber fin 85 or the brush 86 is covered or a cover is attached, it is necessary to secure a mounting space S (see FIG. 8) between the hinge member 82 and the side surface 81b of the seat back 81. There is a problem that the size of the entire seat in the vehicle width direction increases accordingly. Further, in the case of the fin 85 and the brush 86, since only the hole 84 is covered, the remaining portion is exposed and the appearance cannot be improved.
[0007]
The present invention has been made in view of the above situation, and provides a hinge cover structure for an automotive seat device that can prevent deterioration in appearance and malfunction of a forward-turning mechanism without increasing the vehicle width direction dimension of the seat. The purpose is that.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, a seat back is disposed on a seat cushion disposed above the vehicle body floor, and a position between an upright position where the seat back can be seated and a forward position where the seat back contacts the upper surface of the seat cushion. The seat device for an automobile equipped with a forward-turning mechanism that is pivotally supported by the vehicle is attached to the left and right side walls of the seat back so that the outer surface of the hinge member constituting the forward-turning mechanism is covered with a cover member. In this hinge cover structure, the cover has flexibility between the back surface of the seat back and the hinge member, and covers at least a part of the inner surface of the protruding portion that protrudes rearward from the seat back rear end surface of the hinge member. the plates were disposed, one end portion of the cover plate is attached to the back of the seat back, the other end attached to the cover member or the hinge member, the hinge member The protruding portion protrudes rearward from the rear end surface of the seat back when the seat back is in the standing position, and is located below the back surface of the seat back when in the forward-falling position. The cover plate is configured so that the seat back is in the standing position. In some cases, it is pulled in a tension state to cover the inner side surface of the protrusion, and contracts between the back of the seat back and the protrusion as the seat back is tilted forward .
[0009]
According to a second aspect of the present invention, in the first aspect, the cover member is integrally formed with a pair of stoppers that are in contact with both side edges in the width direction of the cover plate and prevent the cover plate from shifting. Yes.
[0010]
[Effects of the invention]
According to the hinge cover structure of the present invention, the flexible cover plate that covers the protrusion is disposed between the back surface of the seat back and the protrusion of the hinge member, and one end of the cover plate is attached to the seat. Since the other end of the back is attached to the cover member or hinge member on the back of the back, the inner surface of the protruding portion is always covered with the cover plate not only when the seat back is raised but also when the forward operation is performed. It is possible to prevent the appearance from deteriorating due to the exposure of the protrusions. Further, when, for example, a hole is formed in the projecting portion, the hole is always covered, so that it is possible to prevent a malfunction of the forward-turning mechanism due to the entry of foreign matter.
[0011]
In the present invention, one end portion of the cover plate is attached to the back surface of the seat back and the other end portion is attached to the hinge member or the cover member. Therefore, the cover plate is stretched between the seat back and the hinge member in the front-rear direction. Therefore, it is not necessary to secure a mounting space between the hinge member and the seat back, and the problem that the size of the seat in the vehicle width direction can be avoided.
[0012]
According to the second aspect of the present invention, since the stoppers that are in contact with both side edges of the cover plate are integrally formed in the cover member, it is possible to prevent the cover plate from being displaced by the forward operation of the seat back. Further, it is possible to avoid an increase in the number of parts when the cover plate is prevented from being displaced by another part.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 6 are views for explaining a hinge cover structure of an automobile seat device according to an embodiment of the present invention. FIG. 1 is a perspective view of the seat device, and FIG. 2 is a hinge cover structure of the seat device. 3 to 5 are perspective views showing the operation of the seat device as viewed from the back side, and FIG. 6 is a sectional view of a cover band mounting portion of the seat back (a sectional view taken along line VI-VI in FIG. 5). ).
[0014]
In the figure, reference numeral 1 denotes a seat device, which is disposed on a vehicle body floor (not shown) and supports a passenger's buttocks, and is pivotally connected to a rear end portion of the seat cushion 3, The seat cushion 3 and the seat back 4 have a general structure in which cushion pads 40 are disposed on the seat frame 17 and covered with an outer skin 41. is there. The outer skin 41 is formed by stitching the outer skins 41a, 41b, 41c cut according to the shape of each wall surface of the seat back 4 (see FIG. 6).
[0015]
The upper surface 3a of the seat cushion 3 is higher toward the front side so that the inclination angle is about 10 degrees, and the seat back 4 at the normal seating position is slightly inclined backward. This improves sitting comfort and stabilizes the sitting posture.
[0016]
The connecting portion between the seat cushion 3 and the seat back 4 is a forward-facing support that is pivotably supported between an upright position where the seat back 4 can be seated and a forward-facing position that contacts the upper surface 3 a of the seat cushion 3. A mechanism 5 is provided.
[0017]
A hinge plate (hinge member) 10 constituting the forward folding mechanism 5 is disposed on the left and right side walls 4b and 4b of the seat back 4 so as to extend downward along the side wall 4b. The hinge plate 10 is generally formed in an inverted shape, and a rear end portion ( protrusion portion ) 10 g of the hinge plate 10 protrudes slightly rearward from the rear end surfaces of the seat cushion 3 and the seat back 4.
[0018]
The lower end portions 10 a of the left and right hinge plates 10 are connected to each other by a connecting pipe 11, and both left and right end portions of the connecting pipe 11 are rotatably supported by a seat frame of the seat cushion 3. The connecting pipe 11 prevents the left and right hinge plates 10 from being twisted or displaced in the front-rear direction.
[0019]
Further, a torsion spring (not shown) for rotating and biasing the hinge plate 10 in the forward direction is wound around the connecting pipe 11. One end of the spring is on the hinge plate 10 and the other end is on the seat frame. It is locked. The upper end portions 10b of the left and right hinge plates 10 are connected to the left and right side walls 4b of the seat back 4 via pin members 15. In this way, the seat back 4 is supported by the connecting pipe 11 so as to be able to rotate back and forth and to be relatively rotatable by the pin member 15.
[0020]
An engagement hole 20 is formed between the connecting pipe 11 of the hinge plate 10 and the pin member 15, and an engagement release hole 21 extending rearward at substantially right angles is formed following the upper end of the engagement hole 20. The disengagement hole 21 extends to the rear end edge of the rear protrusion 10g.
[0021]
An engagement pin 25 is fixed to the frame of the seat back 4, and the engagement pin 25 is engaged with the lower end of the engagement hole 21 of the hinge plate 10. Thereby, the rotation of the seat back 4 around the pin member 15 in the front-rear direction is prevented. Further, when the seat back 4 is rotated forward around the connecting pipe 11, the engagement pin 25 moves to the engagement release hole 21 side, so that the seat back 4 can be rotated around the pin member 15. It has become.
[0022]
A reinforcement plate 26 is fixed to the outer surface of the hinge plate 10 so as to straddle the engagement release hole 21, and a support piece 26 a is formed on the front edge of the reinforcement plate 26. A coil spring (not shown) is installed between the support piece 26a and the pin member 15, and the seat back 4 is urged downward by the spring.
[0023]
A resin cover (cover member) 9 having a shape along the hinge plate 10 is detachably mounted on the outer surface of the hinge plate 10. Boss portions 9b and 9c are integrally formed on the rear wall of the resin cover 9, and cutout recesses 10h and 10e into which the boss portions 9b and 9c are respectively fitted are provided on the hinge plate. . The bosses 9b and 9c can be formed so that screws can be screwed in and used to fix the resin cover 9 to the hinge plate 10. The resin cover 9 is positioned below the back surface 4a of the seat back 4 when the seat back 4 is in the forward position, so that it does not interfere when the back surface 4a of the seat back 4 is used as a loading platform or a table. It is like that.
[0024]
A belt-shaped rubber cover band (cover plate) 45 is disposed between the back surface 4a of the seat back 4 and the protruding portion 10g of the hinge plate 10, and the cover band 45 allows the inner portion of the protruding portion 10g. The engagement release hole 21 and the engagement hole 20 on the side surface are covered. The cover band 45 is stretched and stretched substantially when the seat back 4 is in the upright position, and its length, elasticity, etc. are set so that it contracts as it leans forward.
[0025]
The front end portion 45 b of the cover band 45 is attached to the left and right end edges of the back surface 4 a of the seat back 4. Specifically, the front end portion 45b is sandwiched and stitched together by a skin 41a disposed on the back surface 4a and a skin 41b disposed on the side surface 4b. The cover band 45 extends from the inner surface of the protruding portion 10g of the hinge plate 10 to the outer surface (see the two-dot chain line in FIG. 6). Thus, the front end portion 45b and the rear end portion 45c of the cover band 45 are not visible from the outside, thereby improving the appearance.
[0026]
A rectangular locking hole 45a is formed in the rear end 45c of the cover band 45, and the locking hole 45a is locked to the support piece 26a of the reinforcing plate 26 fixed to the hinge plate 10 described above. ing. The reinforcing plate 26 is provided to support a coil spring that urges the seat back 4 downward and reinforces it so as to withstand the load acting on the engagement releasing hole 21 from the engaging hole 20. It is. Thus, by attaching the cover band 45 using the existing one, the number of parts is prevented from increasing.
[0027]
Further, the bosses 9b, 9c integrally formed on the rear side of the resin cover 9 are set at positions where they abut against both side edges 45d in the width direction of the cover band 45, whereby the cover band 45 can be moved in the vertical direction. It is blocked.
[0028]
Next, the effect of this embodiment is demonstrated.
In the forward folding mechanism 5 of the seat device 1 of the present embodiment, when the seat back 4 is in the upright position, the hinge plate 10 projects the largest rearward (see FIG. 3), and as the seat back 4 is rotated forward. The protrusion amount is reduced (see FIG. 4), and when it is completely moved forward, the hinge plate 10 does not protrude from the back surface 4a of the seat back 4 (see FIG. 5). For this reason, the cover band 45 laid between the back surface 4a of the seat back 4 and the protruding portion 10g of the hinge plate 10 is pulled back and forth when the seat back 4 is in an upright state, and is in a tensioned state. The periphery of the mating release hole 21 is covered with the hinge plate 10 in contact. The cover band 45 has a front end 45b attached to the left and right edges of the back surface 4a of the seat back 4 and a rear end 45c attached to the reinforcing plate 26 so as to cover the hinge plate 10. 4 contracts with the forward rotation of the seat 4 and always covers the inner surface of the projection 10g not only when the seat back 4 is raised but also when the seat back 4 is pivoted forward. It is possible to prevent the appearance from being deteriorated due to the exposure of 21, and to prevent foreign matter from entering the engagement release hole 21, thereby preventing malfunction during forward operation.
[0029]
Further, the front end 45b of the cover band 45 is attached to the back surface 4a of the seat back 4, and the rear end 45c is attached so as to sandwich the protruding portion 10g of the hinge plate 10, so that the gap between the back of the seat back 4a and the protruding portion 10g. The cover band 45 can be arranged using the empty space, and it is not necessary to secure a mounting space between the side surface 4b of the seat back 4 and the hinge plate 10, and an increase in the vehicle width direction dimension of the seat can be avoided. .
[0030]
In the present embodiment, since the boss portions 9b, 9c integrally formed on the rear side of the resin cover 9 are arranged so as to abut on both side edges 45d, 45d of the cover band 45, the cover can be covered by a forward operation of the seat back 4 or the like. The band 45 can be prevented from shifting. In this case, if the boss portions 9b, 9c of the resin cover 9 are shared by the mounting holes, it is possible to avoid an increase in the number of parts.
[0031]
Further, the cover band 45 is made of rubber, is in a tension state that is greatly stretched when the seat back 4 is erected, and is contracted as the seat back 4 is moved forward, so that the cover band 45 is slack when the seat back 4 is moved forward. It doesn't stand out so much, and it can improve the appearance from this point. Further, the cover band 45 does not get in the way when the seat back 4 is used as a loading platform or table when the seat back 4 is moved forward.
[0032]
In the above embodiment, the cover band 45 covers only the periphery of the engagement hole 20 and the engagement release hole 21 of the protrusion 10g. However, in the present invention, the entire surface of the protrusion may be covered. The cover band 45 is not limited to a stretchable material such as rubber, and may be formed of, for example, a flexible cloth. In this case, the same effect as that of the above embodiment can be obtained. can get.
[0033]
Further, the case where the rear end portion 45c of the cover band 45 is locked to the reinforcing plate 26 fixed to the hinge plate 10 has been described. However, the cover band 45 of the present invention has both boss portions 9b and 9c in the resin cover 9. You may fix with a tapping screw or a clip between.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an automobile seat device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view for explaining a hinge cover structure of the seat device.
FIG. 3 is a perspective view of the cover band portion of the seat device when the seat back is erected.
FIG. 4 is a perspective view of the cover band portion of the seat device in the middle of the seat back forward tilting.
FIG. 5 is a perspective view of the seat apparatus in a forward-turned state.
6 is a cross-sectional view (cross-sectional view taken along line VI-VI in FIG. 5) of a cover band portion of the seat back.
FIG. 7 is a perspective view of a seat device for explaining a formation process of the present invention.
FIG. 8 is a sectional view of the hinge cover in the establishment process.
FIG. 9 is a view of the hinge cover in the establishment process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat apparatus 3 Seat cushion 3a Upper surface 4 Seat back 4a Back surface 4b Side surface 5 Forward-reverse mechanism 9 Resin cover (cover member)
9b, 9c Boss part 10 Hinge plate (hinge member)
10g Projection 45 Cover band

Claims (2)

A seat back is disposed on a seat cushion disposed above the vehicle floor, and is supported so as to be rotatable between an upright position where the seat back can be seated and a forward position where the seat back contacts the upper surface of the seat cushion. In the hinge cover structure, which is attached to the left and right side walls of the seat back of an automobile seat device provided with a forward folding mechanism, and covers the outer surface of the hinge member constituting the forward folding mechanism with a cover member, A cover plate is provided between the back surface of the seat back and the hinge member, the cover plate covering at least a part of the inner surface of the projecting portion projecting backward from the rear end surface of the seat back of the hinge member; one end portion of the cover plate is attached to the back of the seat back, the other end attached to the cover member or the hinge member, the protruding portions of the hinge members, Shitoba When the seat back is in the standing position, it projects rearward from the rear end surface of the seat back, and when it is in the forward position, it is positioned below the back of the seat back. The cover plate is in tension when the seat back is in the standing position. A hinge cover structure for a seat device for an automobile, wherein the hinge cover structure covers the inner side surface of the protruding portion by being pulled and contracts between the rear surface of the seat back and the protruding portion when the seat back is tilted forward . 2. The hinge of an automobile seat device according to claim 1, wherein the cover member is integrally formed with a pair of stoppers that abut against both side edges in the width direction of the cover plate and prevent displacement of the cover plate. Cover structure.

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