JP2005001454A - Belt device - Google Patents

Abstract

A belt device capable of removing slack at one side and the other side of a belt member with a single removing means.
In a vehicle seat belt device, a tongue insertion portion 24 of a belt 16 is inserted into a tongue 20, a shoulder belt portion 26 of the belt 16 is wound around a shoulder retractor, and a lap belt portion 28 of the belt 16 is wrapped. It is wound on a retractor. Further, the movement of the belt 16 is restricted by the lap stopper 34 coming into contact with the tongue 20. Here, in the case of an emergency of the vehicle, the belt 16 is wound only on the shoulder retractor to remove the slack of the shoulder belt portion 26, and further, the lap stopper 34 is removed from the belt 16 by the tongue 20, and the lap belt portion 28 is tanged. Moved beyond 20. Thereby, the slack of the shoulder belt part 26 and the lap belt part 28 can be removed.
[Selection] Figure 1

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a belt device that restrains an occupant by one side portion and another side portion of a belt member at a predetermined opportunity.
[0002]
[Prior art]
The seat belt device includes two retractors and two seat belts, each seat belt can be pulled out from each retractor, and the front end of each seat belt is inserted into a vehicle body side buckle via a tongue. (For example, refer to Patent Document 1).
[0003]
In this seat belt device, one seat belt is used as a shoulder belt portion and crosses the upper front side of the occupant, and the other seat belt is used as a lap belt portion and crosses the front side of the occupant.
[0004]
However, since this seat belt device includes two retractors and two seat belts, when providing a pretensioner mechanism for removing slack of each seatbelt, it is necessary to provide a pretensioner mechanism for each retractor. is there. Thereby, there exists a problem that cost and a weight increase.
[0005]
The seat belt device includes two retractors and one seat belt. Each end of the seat belt is wound around each retractor, and a tongue is provided at an intermediate portion of the seat belt. There are things that plug into the buckle on the car body side.
[0006]
In this seat belt device, one end side of the seat belt tongue is a shoulder belt portion and crosses the upper body side of the occupant, and the other end side of the seat belt tongue is a lap belt portion and crosses the occupant's waist side. .
[0007]
Here, in this seat belt device, the tongue does not fall when the seat belt is not used, and the seat belt does not move relative to the tongue when the tongue is gripped and the seat belt is pulled out from each retractor. In order to secure the usability of the seat belt and to adjust the amount of the seat belt pulled out from each retractor, it is desirable that the movement of the tongue in the longitudinal direction of the seat belt is restricted.
[0008]
However, when the movement of the tongue in the longitudinal direction of the seat belt is restricted, when the pretensioner mechanism for removing the slack of the shoulder belt portion and the lap belt portion of the seat belt is provided, each retractor is provided in the same manner as described above. It is necessary to provide a pretensioner mechanism, and this increases the cost and weight.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-112654
[Problems to be solved by the invention]
In view of the above facts, an object of the present invention is to provide a belt device that can remove slack in one side portion and the other side portion of the belt member with one removing means even when movement of the portion between the belt members is restricted. It is.
[0011]
[Means for Solving the Problems]
The belt device according to claim 1, wherein the belt device is disposed and held between one end and the other end, the one side portion disposed on the one end side from the space portion and held on the side opposite to the middle portion, A belt member for restraining an occupant at a predetermined opportunity, and one side of the belt member at a predetermined opportunity. Removing means for removing the slack of any one of the part and the other side part, and restricting means for restricting movement of the part between the belt members and releasing movement restriction of the part between the belt members at a predetermined opportunity; It is equipped with.
[0012]
In the belt device according to claim 1, the portion between the one end and the other end of the belt member is held, and the one-side portion disposed between the belt member and one end is disposed between the belt members. The opposite side portion side of the other side portion arranged on the other end side from the portion side and the portion between the belt members is held. Further, the regulating means regulates the movement of the portion between the belt members.
[0013]
Here, at a predetermined opportunity, the removing means removes the slack in one of the one side portion and the other side portion of the belt member. Further, the restricting means releases the movement restriction of the portion between the belt members. For this reason, when the belt member is moved, the slack is removed at one of the one side portion and the other side portion of the belt member, and the belt member can restrain the occupant at the one side portion and the other side portion. Thus, even with one removing means, it is possible to remove the slack of the one side portion and the other side portion of the belt member, thereby reducing the cost and weight.
[0014]
The belt device according to claim 2 is the belt device according to claim 1, wherein the restricting means is movably provided at a portion between the belt members and holds the portion between the belt members. And the engagement member is engaged with the engagement member so that the movement of the portion between the belt members is restricted, and the engagement member is removed from the belt member at a predetermined opportunity. And a regulating member for releasing the movement regulation of the portion between the belt members.
[0015]
In the belt device according to claim 2, in the restricting means, the engaging member that is movably provided at the portion between the belt members and holds the portion between the belt members is engaged with the restricting member provided at the belt member. By doing so, the movement of the site | part between belt members is controlled. Further, at a predetermined opportunity, the restriction member is removed from the belt member by the engaging member, so that the movement restriction of the portion between the belt members is released. For this reason, it is sufficient for the restricting means to have an engaging member and a restricting member, and the configuration of the restricting means can be simplified.
[0016]
The belt device according to claim 3 is the belt device according to claim 2, wherein the restriction member is partially detached from the belt member by the engagement member at a predetermined opportunity. .
[0017]
In the belt device according to the third aspect, since the restricting member is partially removed from the belt member by the engaging member at a predetermined opportunity, it is possible to prevent the restricting member from being completely detached from the belt member and scattered.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 3 is a front view of a vehicle seat belt device 10 according to an embodiment in which the belt device of the present invention is applied. In this embodiment, the front of the vehicle is “front”, the rear of the vehicle is “rear”, the right side of the vehicle is “right”, the left side of the vehicle is “left”, and the upper side of the vehicle is “upward”. And the lower part of the vehicle is “downward”.
[0019]
The vehicle seat belt device 10 according to the present embodiment is a so-called three-point type provided in a seat (not shown) of a vehicle (installation target).
[0020]
The vehicle seat belt device 10 includes a shoulder retractor 12 (emergency lock retractor), and the shoulder retractor 12 is fixed to a vehicle body on one side of the seat (right side in the present embodiment). The shoulder retractor 12 includes a pretensioner mechanism (not shown) and serves as a removing unit. Further, the vehicle seat belt apparatus 10 includes a lap retractor 14 (emergency lock retractor), and the lap retractor 14 is fixed to a vehicle body at one side lower part of the seat.
[0021]
A belt 16 (webbing) as a belt member is stretched between the shoulder retractor 12 and the lap retractor 14, and one end of the belt 16 is wound around the shoulder retractor 12 and the vehicle body passes through the shoulder retractor 12. The other end side of the belt 16 is wound around the wrap retractor 14 and is held by the vehicle body via the wrap retractor 14.
[0022]
The belt 16 is movably inserted into a plate-shaped anchor 18, and the anchor 18 is fixed to the vehicle body at one side upper part of the seat. For this reason, the belt 16 is held by the vehicle body via the anchor 18 at a portion inserted through the anchor 18, and the belt 16 is vertically moved at one side of the seat in a portion from the shoulder retractor 12 to the anchor 18. Arranged along the direction.
[0023]
The belt 16 is movably inserted in a plate-like tongue 20 as an engaging member of the restricting means on the other end side from the anchor 18, and the tongue 20 is inserted into the buckle 22 and fixed to the buckle 22. . The buckle 22 is fixed to the vehicle body on the lower side of the other side of the seat (left side in the present embodiment), and the belt 16 is attached to the vehicle body via the tongue 20 and the buckle 22 at a portion inserted through the tongue 20. Is retained. As a result, the belt 16 passes from the shoulder on one side of the occupant seated on the seat to the front on the other side of the waist in the part from the anchor 18 to the tongue 20 and the part from the tongue 20 to the lap retractor 14. The vehicle passes through the front of one side of the occupant from the other side of the waist.
[0024]
Hereinafter, a portion inserted into the tongue 20 of the belt 16 is referred to as a tongue insertion portion 24 (intermediate portion), and a portion on one end side from the tongue insertion portion 24 of the belt 16 is referred to as a shoulder belt portion 26 (one side portion). The part on the other end side of the sixteen tongue insertion parts 24 is referred to as a lap belt part 28 (another part).
[0025]
As shown in FIG. 1, the belt 16 is provided with a shoulder stopper 30 (tang stopper) in the vicinity of one end side of the tongue insertion portion 24, and the shoulder stopper 30 is constituted by webbing. The shoulder stopper 30 is attached to the side opposite to the buckle 22 of the belt 16 by sewing 32, and the shoulder stopper 30 abuts (engages) the tongue 20 so that the tongue insertion portion 24 of the belt 16 is on the side of the lap retractor 14 ( Movement to the other end side) is restricted.
[0026]
The belt 16 is provided with a lap stopper 34 (tang stopper) as a restricting member of the restricting means in the vicinity of the other end side of the tongue insertion part 24, and the lap stopper 34 is elongated along the belt 16. It is comprised by the made webbing. The lap stopper 34 is attached to the side opposite to the buckle 22 of the belt 16 by sewing 36 and 38 at one end (part on the tongue insertion part 24 side) and the other end (part on the side opposite to the tongue insertion part 24), respectively. The movement of the tongue insertion portion 24 of the belt 16 toward the shoulder retractor 12 side (one end side) is restricted by the end portion of the lap stopper 34 abutting (engaging) with the tongue 20. Further, the sewing 36 at one end of the lap stopper 34 is easily cut, while the sewing 38 at the other end of the lap stopper 34 is not cut.
[0027]
Here, in an emergency (predetermined opportunity) such as when the vehicle is suddenly decelerated, the belt 16 is wound around the shoulder retractor 12 by the pretensioner mechanism of the shoulder retractor 12 so that the shoulder belt portion 26 of the belt 16 is wound. , Moved to the shoulder retractor 12 side. Further, the sewing 36 at one end portion of the lap stopper 34 is cut by receiving a load from the tongue 20, so that one end portion of the lap stopper 34 is detached from the belt 16, and the lap belt portion 28 of the belt 16 exceeds the tongue 20. 16 is moved to the shoulder belt portion 26 side (shoulder retractor 12 side) (see FIG. 2). As a result, the slack of the belt 16 is removed at the shoulder belt portion 26 and the lap belt portion 28, and the occupant is restrained by the seat by the shoulder belt portion 26 and the lap belt portion 28 of the belt 16.
[0028]
Further, even when the lap belt portion 28 of the belt 16 is moved to the shoulder belt portion 26 side of the belt 16 as described above, the sewing 38 at the other end of the lap stopper 34 receives a load from the tongue 20. However, the other end portion of the lap stopper 34 does not come off the belt 16 (see FIG. 2).
[0029]
Next, the operation of the present embodiment will be described.
[0030]
In the vehicle seat belt device 10 having the above-described configuration, the tongue insertion portion 24 disposed between one end and the other end of the belt 16 is movably inserted into the tongue 20, via the tongue 20 and the buckle 22. It is held by the car body. Further, a shoulder belt portion 26 disposed on one end side of the tongue insertion portion 24 of the belt 16 is movably inserted into the anchor 18 and is held on the vehicle body via the shoulder retractor 12 on the side opposite to the tongue insertion portion 24. ing. In addition, the lap belt portion 28 disposed on the other end side of the tongue insertion portion 24 of the belt 16 is held by the vehicle body via the lap retractor 14 on the side opposite to the tongue insertion portion 24.
[0031]
Further, the shoulder stopper 30 and the lap stopper 34 attached in the vicinity of both sides of the tongue insertion portion 24 of the belt 16 abut on the tongue 20, whereby the tongue insertion portion 24 of the belt 16 toward the lap retractor 14 side and the shoulder retractor 12 side. Movement is restricted. Therefore, the tongue 20 can be prevented from falling when the belt 16 is not used, and the belt 16 is prevented from moving relative to the tongue 20 when the tongue 20 is gripped and pulled out of the shoulder retractor 12 and the lap retractor 14. Thus, the usability of the belt 16 can be ensured, and the pull-out amount of the belt 16 from the shoulder retractor 12 and the wrap retractor 14 can be adjusted.
[0032]
Here, in the event of an emergency of the vehicle, the belt 16 is wound around the shoulder retractor 12 by the pretensioner mechanism of the shoulder retractor 12, whereby the shoulder belt portion 26 of the belt 16 is moved toward the shoulder retractor 12, and the shoulder of the belt 16 is moved. The slack in the belt portion 26 is removed. Further, the sewing 36 at one end portion of the lap stopper 34 is cut by receiving a load from the tongue 20, so that one end portion of the lap stopper 34 is detached from the belt 16, and the lap belt portion 28 of the belt 16 exceeds the tongue 20. 16 is moved to the shoulder belt portion 26 side. Accordingly, the slack is removed also at the lap belt portion 28 of the belt 16, and the belt 16 can restrain the occupant to the seat at the shoulder belt portion 26 and the lap belt portion 28.
[0033]
As described above, even when the pretensioner mechanism is provided only in the shoulder retractor 12 and the pretensioner mechanism is not provided in the wrap retractor 14, the slack of the shoulder belt portion 26 and the lap belt portion 28 of the belt 16 can be removed, and the cost and Weight can be reduced.
[0034]
Furthermore, as described above, the tongue 20 that is movably inserted into the tongue insertion part 24 of the belt 16 and holds the tongue insertion part 24 of the belt 16 abuts on one end of the lap stopper 34 attached to the belt 16. Thus, the movement of the tongue insertion portion 24 of the belt 16 toward the shoulder retractor 12 is restricted. Further, in the event of an emergency of the vehicle, one end of the lap stopper 34 is removed from the belt 16 by the tongue 20, so that the restriction of movement of the tongue insertion portion 24 of the belt 16 toward the shoulder retractor 12 is released (released). For this reason, only by providing the tongue 20 and the lap stopper 34, the movement of the belt 16 toward the shoulder retractor 12 side of the tongue insertion portion 24 can be restricted and the restriction can be released, so that the configuration can be simplified.
[0035]
Further, even when the vehicle is in an emergency, the sewing 38 at the other end of the lap stopper 34 is not cut even when a load is applied from the tongue 20, and the other end of the lap stopper 34 is not detached from the belt 16. It can be prevented from completely separating from 16 and scattering.
[0036]
In the present embodiment, the lap stopper 34 is configured by webbing, but the lap stopper (regulating member) may be configured by resin.
[0037]
For example, the lap stopper 50 shown in FIG. 4A is a plate-like resin that is elongated along the belt 16. A caulking portion 52 is integrally provided at one end of the lap stopper 50 (a portion on the tongue insertion portion 24 side), and the caulking portion 52 has a columnar through column 54 and a hemispherical head 56. The penetrating column 54 protrudes from the lap stopper 50, and the head 56 is integrated with the protruding tip of the penetrating column 54. The through column 54 is penetrated by the through hole 58 of the belt 16, and the head portion 56 is locked around the through hole 58 of the belt 16, whereby one end portion of the lap stopper 50 is connected to the caulking portion 52 and the through hole. It is attached to the belt 16 by 58. Further, the head portion 56 is locked around the through hole 58 of the belt 16 only at the portion on the side opposite to the tongue insertion portion 24, so that one end portion of the lap stopper 50 is connected to the belt as in the present embodiment. 16 is easily removed. Further, the other end portion of the lap stopper 50 (the portion on the side opposite to the tongue insertion portion 24) is attached to the belt 16 by sewing 38 that is not cut as in the present embodiment, and is not detached from the belt 16.
[0038]
Further, the lap stopper 60 shown in FIG. 4B is a plate-like resin that is elongated along the belt 16 in the same manner as the lap stopper 50 shown in FIG. One end portion of the lap stopper 60 (the portion on the tongue insertion portion 24 side) is provided with a caulking portion 52 integrally with one end portion of the lap stopper 50 in FIG. By being attached to the belt 16 by the through hole 58, the belt 16 can be easily detached. Further, a caulking portion 52 is also integrally provided at the other end portion of the lap stopper 60 (a portion on the side opposite to the tongue insertion portion 24). The through column 54 of the caulking portion 52 is penetrated through the through hole 62 of the belt 16, and the head portion 56 of the caulking portion 52 is locked around the through hole 62 of the belt 16, thereby the lap stopper 60. Is attached to the belt 16 by the caulking portion 52 and the through hole 62. Further, the head portion 56 of the caulking portion 52 is locked around the through hole 62 of the belt 16 on the entire circumference, so that the other end portion of the lap stopper 60 is detached from the belt 16 as in the present embodiment. It has been lost.
[0039]
Further, the lap stopper 70 shown in FIG. 4C is a plate-like resin that is elongated along the belt 16 in the same manner as the lap stopper 50 of FIG. One end of the lap stopper 70 (the part on the tongue insertion part 24 side) is attached to the belt 16 by the easy-to-cut sewing 36 as in the present embodiment, and is easily detached from the belt 16. Further, the other end of the wrap stopper 70 (the part on the side opposite to the tongue insertion part 24) is attached to the belt 16 by sewing 38 which is not cut as in the present embodiment, and is not detached from the belt 16.
[0040]
Further, the lap stopper 80 shown in FIG. 4D is a plate-like resin. The lap stopper 80 is similar to the one end portion of the lap stopper 50 shown in FIG. 4A, and the caulking portion 52 is integrally provided, and is attached to the belt 16 by the caulking portion 52 and the through hole 58 of the belt 16. It is easy to come off from the belt 16.
[0041]
Further, in the present embodiment, the belt 16 is wound around the shoulder retractor 12 as the removing means to remove the slack of the belt 16, but the shoulder belt portion 26 of the belt 16 is a so-called air belt as the removing means. It is good. In this case, slack in the shoulder belt portion 26 is removed by filling the shoulder belt portion 26 with gas to expand the shoulder belt portion 26.
[0042]
Further, in the present embodiment, the belt 16 is wound around the shoulder retractor 12 to remove the slack of the shoulder belt portion 26 of the belt 16, but instead, the belt 16 is wound around by the wrap retractor 14. Or it is good also as a structure which removes the slack of the lap belt part 28 of the belt 16 by the expansion | swelling (removal means) by the gas filling of the lap belt part 28 of the belt 16. In this case, the lap stoppers 34, 50, 60, 70, and 80 of the present embodiment or the modification are disposed in the vicinity of one end side of the belt 16 from the tongue insertion part 24 and the other end is directed to the tongue insertion part 24 side. The shoulder stopper 30 of the present embodiment is provided near the other end side of the belt 16 from the tongue insertion site 24 while being provided with the end portion facing the counter tongue insertion site 24 side.
[0043]
【The invention's effect】
In the belt device according to claim 1, the removing unit removes the slack in one side part or the other side part of the belt member at a predetermined opportunity, and the regulating unit regulates the movement of the part between the belt members. In order to cancel, the slack of the one side part and the other side part of the belt member can be removed with one removing means, and the cost and weight can be reduced.
[0044]
In the belt device according to the second aspect, the restricting means only needs to have the engaging member and the restricting member, and the structure of the restricting means can be simplified.
[0045]
In the belt device according to the third aspect, since the restricting member is partially removed from the belt member by the engaging member at a predetermined opportunity, it is possible to prevent the restricting member from being completely detached from the belt member and scattered.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a tongue insertion portion of a belt and its periphery in a vehicle seat belt device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a tongue insertion portion of the belt and its surroundings in an emergency of the vehicle of the vehicle seat belt device according to the embodiment of the present invention.
FIG. 3 is a front view showing the vehicle seat belt device according to the embodiment of the present invention.
FIGS. 4A to 4D are front views showing modifications of the lap stopper in the vehicle seat belt device according to the embodiment of the present invention. FIGS.
[Explanation of symbols]
10. Vehicle seat belt device (belt device)
12 Shoulder retractor (removal means)
16 Belt (Belt member)
20 tongue (regulating means, engaging member)
24 tongue insertion site (inter-site)
26 Shoulder belt part (one side part)
28 Lap belt part (other side part)
34 Lap stopper (regulating means, regulating member)
50 Lap stopper (regulating means, regulating member)
60 Lap stopper (regulating means, regulating member)
70 Lap stopper (regulating means, regulating member)
80 Lap stopper (regulating means, regulating member)

Claims (3)

An intermediate portion disposed and held between the one end and the other end, a one side portion disposed on the one end side from the intermediate portion and held on the opposite side, and an opposite portion disposed on the other end side from the intermediate portion. A belt member for restraining an occupant at a predetermined opportunity,
Removing means for removing slack in one of the one side part and the other side part of the belt member at a predetermined opportunity;
Restricting means for restricting movement of the portion between the belt members and releasing movement restriction of the portion between the belt members at a predetermined opportunity;
A belt device comprising: The regulating means is
An engagement member that is movably provided at a portion between the belt members and holds the portion between the belt members;
When the engagement member is provided on the belt member and the engagement member is engaged, the movement of the portion between the belt members is restricted, and the engagement member removes the belt member from the belt member at a predetermined opportunity. A restricting member for releasing movement restriction of the portion between the belt members;
The belt device according to claim 1, comprising: The belt device according to claim 2, wherein the restricting member is partially detached from the belt member by the engaging member at a predetermined opportunity.

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