JP2010241251A - Buckle device and seatbelt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress pressure due to interference between a surface of a seat back, a center armrest or the like and a buckle body when the seat back, the center armrest or the like is brought down. <P>SOLUTION: A buckle device includes an anchor 27 fixed to a vehicle, a buckle body 24 for disengageably supporting a seatbelt tongue, a support member 28 for coupling the anchor 27 and the buckle body 24, and a cover member 29 arranged so as to bridge between the buckle body 24 and the support member 28, and for aligning the buckle body 24 in a state in which at least a part of a tip end of the buckle body 24 protrudes from an upper surface of a seat cushion to support the seatbelt tongue. A window part 29c, from which a corner part on a base part side of the buckle body 24 can be protruded, is formed in at least one of side wall surfaces of the cover member 29. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seat belt buckle device that engages and holds a seat belt tongue provided on a vehicle seat belt, and a seat belt device including the buckle device.

  Conventionally, a seat belt device installed in a vehicle seat includes a buckle body of a buckle device fixed to a vehicle such as a vehicle body floor surface or a seat frame from a seat cushion, such as a seat belt device for a rear seat. What was pulled out upwards is known (for example, refer patent document 1).

  Further, in the buckle device disclosed in Patent Literature 1, a slit-like opening is provided in the seat cushion, and the opening of the seat web that supports the buckle body is provided by passing the opening from the vehicle body floor. The vicinity of the upper end is located on the upper surface of the seat cushion.

  Therefore, when the seat belt is attached, it is necessary to attach the seat belt tongue to the buckle body while pulling the seat belt tongue with the other hand while holding the buckle body with one hand.

  However, in order to perform the mounting operation while holding the buckle device with such a single hand, it takes time and the buckle body falls from the opening to the vehicle body floor surface. There was a bug.

  Therefore, for example, like the buckle device for the front seat, the buckle device is fixedly mounted on the vehicle within a range that allows the user's physique to some extent, and at least a part of the upper end of the buckle body is opened from the opening to the seat cushion. It is possible to make it protrude on the upper surface.

  As a result, when the seat belt is to be mounted, it is possible to operate only the seat belt tongue side with one hand and to mount the seat belt tongue on the buckle body without touching the hand.

  In addition, when only a part of the buckle body (the seat belt tongue insertion part) is projected from the opening to the upper surface of the seat cushion, the seat belt tongue can be easily attached to the buckle body and at the same time the seat is attached to the buckle body. Connecting structure that ensures a certain degree of rigidity (self-supporting) between the body floor and the buckle body so that the buckle device does not fall off to the body floor due to the operating load when attaching the belt tongue. Must be adopted.

  From this point of view, it is intended for the front seat to maintain the rigidity (self-supporting property) to maintain its position with only a part of the buckle body protruding from the upper surface of the seat cushion. The structure which mount | wears with the cover over the support part vicinity of the seat web which supports a main body and a buckle main body has already been proposed (for example, refer patent document 2).

JP 2009-006852 A JP 2006-321477 A

  However, if the buckle device configured as described above is applied as it is as a buckle device of a seat belt device for a rear seat, there are the following problems. That is, when the seat back, center armrest, etc. can be tilted, when the seatback or center armrest is laid down, the surface of the seatback or the surface of the center armrest comes into contact with the buckle body, and the surface of the seatback In some cases, the surface of the center armrest or the surface of the center armrest may be dented or pressed more than necessary.

  Note that such a problem is not limited to the rear seat. For example, the driver side seat and the passenger side seat adjacent to each other with a narrow vehicle width such as a mini car or a small car are disposed adjacent to each other. Even when the armrest is disposed between the front seats of an automobile so that the armrest can be turned upside down, the armrest may be generated when the armrest is laid down to be in a use state.

  On the contrary, in the armrest arranged in the front seat and the center armrest arranged in the rear seat, each armrest is thinned and floated from the seat cushion in order to avoid the interference between the above-described buckle body and each armrest. Although it is well known that the state is in the lying down state (use state), if such a configuration is adopted, the cushioning property of the center armrest is impaired, or the strength of the rotation support portion of each armrest must be ensured Such problems occur.

  An object of the present invention is to provide a buckle device and a seatbelt device that can suppress pressing due to interference between the surface of the seatback and the center armrest and the like and the buckle body.

  In order to achieve the above object, a first invention includes an anchor fixed to a vehicle, a buckle body for releasably supporting a seat belt tongue, and a support member for connecting the anchor and the buckle body. And the buckle body is positioned between the buckle body and the support member, and the buckle body is positioned with at least a part of the tip protruding from the upper surface of the seat cushion to support the seat belt tongue. A buckle device comprising a cover member, wherein at least one side wall surface of the cover member is formed with a window portion from which a base side corner of the buckle body can protrude.

  According to the first invention, when the seat back, the center armrest, etc. are laid down due to the presence of the window portion, the base side corner portion of the buckle body protrudes from the window portion in accordance with the load. The amount of movement can be expanded, and the pressing on the surface of the seat back and the center armrest accompanying the interference with the buckle body can be eased.

  According to a second invention, in the first invention, the window portion is formed on a side that allows the buckle body to rotate with respect to a load that is pressed from above to the seat cushion side.

  According to the second aspect of the present invention, when the seat back, the center armrest or the like is laid down only with the window formed on one side surface, the base side corner of the buckle body projects from the window with the load. By doing so, the amount of rotation of the buckle body can be increased.

  According to a third invention, in the first or second invention, the cover member is formed of a resin material that maintains a positioning state of the buckle body and has a flexibility that allows the buckle body to rotate. It is characterized by.

  According to the third invention, when the seat back, the center armrest or the like is laid down due to the presence of the window portion, the window portion is widened when protruding from the window portion of the base side corner portion of the buckle body accompanying the load. The base side corner of the buckle body can be protruded from the window, and the amount of rotation of the buckle body can be increased. Further, by forming the cover member with an elastic resin material, when the seat is erected, the window portion widened by the base side corner portion of the buckle body is elastically restored. As a result, the buckle can be reliably returned to the self-supporting state (initial state).

  According to a fourth invention, in the first to third inventions, a recess is formed in an opening edge of the cover member located diagonally to the window.

  According to the fourth invention, it is possible to further improve the ease of rotation of the buckle body when the seat back, the center armrest or the like is laid down.

  A fifth invention is characterized in that, in the first to third inventions, the thickness of the opening edge portion of the cover member that is located diagonally to the window portion is made thin so as to be elastically deformable.

  According to the fifth aspect, it is possible to improve the ease of rotation of the buckle body when the seat back, the center armrest or the like is laid down.

  According to a sixth invention, in the first to fourth inventions, the support member is configured by webbing and is bent along an extending direction between the anchor and the buckle body. A plurality of folds are made between the anchor and the buckle body.

  According to the sixth invention, while maintaining rigidity (self-supporting) to some extent, the buckle body can be allowed to rotate when the seat back, the center armrest, etc. are laid down, and the cover member is sewn. Can be done easily.

  A seventh invention includes the buckle device described in the first to sixth inventions, a seat belt that includes the seat belt tongue and restrains an occupant, and a retractor that can wind up the seat belt. Features.

  According to the seventh invention, when the seat back, the center armrest, etc. are laid down while maintaining the ease of attaching the tongue to the buckle body, the pressing due to the interference between the surface and the buckle body is alleviated. Can do.

  According to the present invention, when a seat back, a center armrest, or the like is laid down, it is possible to alleviate the pressing associated with the interference between the surface and the buckle body.

1 is a perspective view of a rear seat to which a seat belt device showing an embodiment of the present invention is applied. 1 is a side view of a rear seat to which a seat belt device showing an embodiment of the present invention is applied. It is a front view of the seatbelt apparatus which shows one embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The buckle apparatus which shows one embodiment of this invention is shown, (A) is a front view of a buckle apparatus, (B) is a left view of a buckle apparatus, (C) is a right view of a buckle apparatus. The cover member applied to the buckle device which shows one embodiment of the present invention is shown, (A) is the front view of a cover member, (B) is the left view of a cover member, (C) is the right side of a cover member FIG. The modification of the buckle apparatus which shows one embodiment of this invention is shown, (A) is the left view of a buckle apparatus, (B) is the right view of a buckle apparatus.

  Hereinafter, an embodiment of the present invention is applied to a seat belt device for a rear seat, and will be described with reference to the drawings. It should be noted that the direction indications “front”, “rear”, “left”, “right”, “upper”, and “lower” are all based on the longitudinal direction of the vehicle body when the vehicle is moving forward.

  FIG. 1 is a perspective view of a rear seat to which a seat belt apparatus according to an embodiment of the present invention is applied, FIG. 2 is a side view of a rear seat to which a seat belt apparatus according to an embodiment of the present invention is applied, and FIG. FIG. 4 shows a buckle device showing an embodiment of the present invention, FIG. 4 (A) is a front view of the buckle device, and FIG. 4 (B) is a front view of the seat belt device showing an embodiment of the invention. 4 (C) is a right side view of the buckle device, FIG. 5 shows a cover member applied to the buckle device according to one embodiment of the present invention, and FIG. 5 (A) is a cover. FIG. 5B is a left side view of the cover member, FIG. 5C is a right side view of the cover member, and FIG. 6 shows a modification of the buckle device showing one embodiment of the present invention. 6A is a left side view of the buckle device, and FIG. 6B is a buckle device. It is a right side view.

  In FIG. 1, 11 is a bench seat type rear seat having a seat cushion 12 and a seat back 13 straddling substantially the entire width in the indoor vehicle width direction, 14 is a right rear pillar, and 15 is arranged at the upper rear of the seat back 13. A rear parcel shelf panel, 16 is a seat belt for a right seat pulled out from a belt pull-out opening 14a formed in the right rear pillar 14, and 17 is a central seat pulled out from a belt pull-out opening 15a provided in the rear parcel shelf panel 15. A seat belt for a left seat 18 is drawn out from a belt outlet (not shown) formed in a left rear pillar (not shown). Seat belt tongues 22, 23, 24 are seat cushions provided in a through state on the seat belts 16, 17, 18. Opening 12a provided in the emissions 12, 12b, a portion of the tip to the upper surface 12d from 12c is buckle body projecting.

  Note that the seat back 13 of the rear seat 11 is in a stowed retracted state (see a chain line) from a standing state (shown by a solid line) as shown in FIG. 2, for example, in order to expand the volume of a luggage room (luggage room). And can be changed. At this time, the rear seat 11 is slidable in the front-rear direction, such as a wagon-type rear seat (or a third seat, etc.), reclining, full-flat, folding, rotating (facing-to-seat), etc. As long as it is configured, a known sheet structure can be adopted. In the vicinity of the center of the seat back 13, a center armrest 13a that can be raised and lowered independently of the seat back 13 is disposed.

  In FIG. 1, one end of each of the seat belts 16, 17, and 18 is provided with a seat belt retractor device (both are provided below the right rear pillar 14, below the rear parcel shelf panel 15, below the left rear pillar, etc.). (Not shown) so that it can be wound and pulled out independently. The other end of each seat belt 16, 17, 18 is attached to a seat cushion frame (not shown) or a vehicle body panel (not shown) by belt anchors (both not shown) provided on the right side, center and left side of the seat cushion 11. (Not shown) or the like.

  At this time, the seat belt 17 disposed in the center is pulled out through the belt insertion opening 12e provided in the seat cushion 12.

  The buckle bodies 22, 23, and 24 are used as a buckle body 22 for the right seat of the rear seat 11, a buckle body 23 for the center seat of the rear seat 11, and a buckle body 24 for the left seat of the rear seat 11, respectively. .

  At this time, the buckle body 23 for the central seat and the buckle body 24 for the left seat are arranged in the same orientation as the buckle body 22 for the right seat (buckle body 23) or in a bilaterally symmetrical orientation. The actual configuration is the same as that of the buckle body 22 for the right seat, only the conditions such as (buckle body 24) are different.

  Therefore, in the following description, only the buckle device 25 including the buckle body 24 as shown in FIG. 3 will be described with reference to the illustrated direction of the rear seat 11 shown in FIGS. 1 and 2. Further, in the present embodiment, a set of seat belt devices (for the right seat) includes a seat belt 16, a seat belt tongue 19, a seat belt retractor device (not shown), and a buckle device including a buckle body 22. It is composed. Similarly, a set of seat belt devices (for the central seat) is configured by the seat belt 17, the seat belt tongue 20, the seat belt retractor device (not shown), and the buckle device including the buckle body 23. The seat belt tongue 21, the seat belt retractor device (not shown), and the buckle device 25 including the buckle body 24 constitute a set (for the left seat) of the seat belt device 26.

  Hereinafter, a specific configuration of the buckle device 25 of the present invention will be described.

  The opening 12c formed in the seat cushion 12 is formed to be inclined obliquely forward and upward in the vehicle body, whereby the buckle device 25 is also disposed to be inclined obliquely forward and upward in the vehicle body. Thereby, the mounting direction of the seat belt tongue 21 is substantially coincident with the direction in which the seat belt 18 is wound around the body, and the mounting operation of the seat belt tongue 21 to the buckle body 24 is facilitated.

  In the present embodiment, the buckle device 25 includes an anchor 27 that is fixed to a cushion frame (not shown in detail) constituting the seat cushion 12 and a buckle body 24 that removably supports the seat belt tongue 21. At least from the upper surface 12d of the seat cushion 12 to support the seat belt tongue 21 disposed between the buckle body 24 and the support member 28 and supporting the seat belt tongue 21. And a cover member 29 for positioning the buckle body 24 with a part of the tip protruding.

  The anchor 27 is formed in the shape of a metal plate. In the present embodiment, the anchor 27 is fixed to the cushion frame or the like of the seat cushion 12 via a bolt 30 so as not to rotate. The shape and fixing position of the anchor 27 and fixing means (bolts 30 and the like) are arbitrary depending on the vehicle body structure and the like.

  As shown in FIG. 4, the support member 28 is made of the same fabric (webbing) as the seat belt and is bent along the extending direction between the anchor 27 and the buckle body 24. A plurality of folds are made between the anchor 27 and the buckle body 24. That is, as the support member 28, a material whose thickness and strength are increased by bending the webbing along a fold in the longitudinal direction and halving the width is used. Next, the webbing in a state where the thickness is doubled at this half width is formed into a three-fold structure, and the anchor 27 and the buckle body 24 are held at the folded portions at both ends. In FIG. 4, the folded portion is disclosed only on the anchor 27 side, and the illustration is omitted because the buckle body 24 side is folded inside the buckle body. As a result, the support member 28 can be a webbing composed of six layers provided with sufficient rigidity to support the weight of the buckle body 24 at a high position. Therefore, the support member 28 can permit the rotation of the buckle body 24 when the seat back 13, the center armrest 13 a, etc. are laid down while maintaining rigidity (self-supporting) even at the connecting portion. The cover member 29 can be easily attached by sewing.

  As shown in FIG. 5, the cover member 29 is formed in a substantially T shape when viewed from the front, and a buckle support portion 29 a formed in a substantially rectangular tube shape so as to cover the entire base side of the buckle body 24, and the support member 28. And a belt support portion 29b formed in a pair of tongue pieces so as to sandwich the front and back sides thereof. Further, the cover member 29 is formed of a resin material such as rubber having flexibility to maintain the buckle body 24 in a self-supporting state and allow the buckle body 24 to rotate.

  On at least one side wall surface of the buckle support portion 29a, a window portion 29c from which the base side corner portion of the buckle body 24 can project is formed. At this time, the window portion 29c allows the buckle body 24 to rotate with respect to a load pressed against the seat cushion 12 from above, for example, when the seat back 13 or the center armrest 13a is in a lying state. It is formed on the side. As shown in FIGS. 6A and 6B, a recess 29d may be formed on the opening edge of the cover member 29 that is positioned diagonally with the window 29c, or may be positioned diagonally with the window 29c. The thickness of the opening edge portion of the cover member 29 to be made may be thin so as to be more elastically deformable.

  At this time, the window portion 29c can be the same (one type) regardless of the orientation of the buckle bodies 24, 23, 24, and the buckle can be formed without forming the concave portion 29d or reducing the thickness. In order to facilitate rotation of the main body 24, it may be formed on both side surfaces thereof.

  In addition, the shape and size of the window portion 29c are set so as to substantially match the shape of the base side corner portion according to the shape of the base side corner portion of the buckle body 24 and slightly smaller than the base side corner portion. Is desirable. That is, if the base side corner shape is the same as or larger than the base side corner shape of the buckle body 24, the buckle body 24 rotates unexpectedly due to the mounting load when the seat belt tongue 21 is mounted. This is because the operability is degraded.

  The belt support 29b is formed with a plurality of threading holes 29e for fixing the cover member 29 to the support member 28 by sewing while also fixing the folded end portion of the support member 28 made of webbing having a three-fold six-layer structure. Has been.

  In the above configuration, when the seat belt 18 is worn, the seat belt tongue 21 is grasped with one hand and pulled toward the body side, and the seat belt tongue 21 is attached to the buckle body 24 without touching the buckle body 24. By wearing, it can be in a body restraint state by the seat belt 18.

  Further, when the seat back 13 is to be laid down to extend the luggage room when the rear seat 11 is not used, the seat back 13 is laid down toward the seat cushion 12 by a known folding operation. Can do.

  At this time, when the surface of the seat back 13 abuts the buckle main body 24 against the protruding portion from the upper surface 12d, the base side corner of the buckle main body 24 protrudes from the window 29c with respect to the load from the seat back 13. Therefore, such a problem that the surface of the seat back 13 and the surface of the center armrest 13a are dented or largely pressed is suppressed.

  As described above, in the buckle device 25 of the present invention, the window portion 29 c from which the base side corner portion of the buckle body 24 can project is formed on at least one side wall surface of the cover member 29. Thereby, when the seat back 13, the center armrest 13a, etc. are laid down, the base side corner | angular part of the buckle main body 24 protrudes from the window part 29c with the load. As a result, the amount of rotation of the buckle body 25 can be increased, so that the pressing of the seat back 13 and the center armrest 13a on the surface due to the interference with the buckle body 25 can be reduced.

  By the way, in the said embodiment, although demonstrated by the case where it applied to the buckle apparatus 25 arrange | positioned at the rear seat 11, for example, an armrest can be tilted to the front seat of a comparatively narrow vehicle, such as a light vehicle and a small vehicle In the case where the buckle body 24 is located below when the armrest is laid down to be in a use state, it can be applied.

  At this time, in the armrest arranged on the front seat of such a relatively narrow vehicle, in order to avoid interference between the buckle body 24 and the armrest, the armrest is thinned and floated from the front seat cushion. This eliminates the need to put it in a lying state (in use) and allows the armrest to contact the top surface of the seat cushion, improving the cushioning of the armrest and increasing the strength of the pivot support part of the center armrest. It is possible to eliminate the need for securing.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

11 rear seat 12 seat cushion 12a opening 12b opening 12c opening 12d upper surface 12e belt insertion opening 13 seat back 13a center armrest 14 right rear pillar 14a belt pulling outlet 15 rear parcel shelf panel 15a belt pulling outlet 16 seat belt 17 seat belt 18 seat belt 18 seat belt 19 seat belt 19 Belt tongue 20 Seat belt tongue 21 Seat belt tongue 22 Buckle body 23 Buckle body 24 Buckle body 25 Buckle device 26 Seat belt device 27 Anchor 28 Support member 29 Cover member 29a Buckle support portion 29b Belt support portion 29c Window portion 29d Concavity 29e Threading Hole 30 bolt

Claims (7)

An anchor fixed to the vehicle;
A buckle body for releasably supporting the seat belt tongue;
A support member for connecting the anchor and the buckle body;
A cover member that is disposed between the buckle body and the support member and positions the buckle body in a state in which at least a part of the tip protrudes from the upper surface of the seat cushion to support the seat belt tongue. In the buckle device with
The buckle device, wherein a window portion from which a base side corner portion of the buckle body can project is formed on at least one side wall surface of the cover member. The window is
The buckle device according to claim 1, wherein the buckle device is formed on a side allowing rotation of the buckle body with respect to a load pressed from above to the seat cushion side. The cover member is
3. The buckle device according to claim 1, wherein the buckle device is formed of a resin material that maintains a positioning state of the buckle body and has a flexibility that allows rotation of the buckle body.   The buckle device according to any one of claims 1 to 3, wherein a concave portion is formed in an opening edge portion of the cover member located diagonally to the window portion.   The buckle device according to any one of claims 1 to 3, wherein a thickness of an opening edge portion of the cover member located diagonally to the window portion is thinned so as to be elastically deformable. The support member is configured by webbing,
5. A plurality of folds between the anchor and the buckle body in a state of being bent along an extending direction between the anchor and the buckle body. The buckle device according to any one of the above. A buckle device according to any one of claims 1 to 6,
A seat belt comprising the seat belt tongue and restraining an occupant;
A seat belt device comprising: a retractor capable of winding the seat belt.

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