JPH11198757A - Air belt device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a tongue device to be easily grasped by an occupant when an air belt device is installed. SOLUTION: An air belt device comprising a shoulder belt 6 and a tongue device 8 fixed to the end part of a lap belt 7 becomes difficult for an occupant to reach because the lap belt 7 is wound up by a retractor 4 installed on the underside of a center pillar 2 when it is not installed and thus the tongue device 8 and the shoulder belt 6 are inserted in a clearance between a center pillar 2 and a seal 1. Because, when the air belt device is not installed, a reacher 29 installed on the upper part of the center pillar 2 is oscillated upward so as to expose the upper part of the shoulder belt 6 upward through a clearance between the center pillar 2 and the seat 1, the occupant can grasp the tongue device 8 easily by merely pulling the shoulder part 6 manually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air belt device for inflating a belt for restraining an occupant to a seat at the time of a vehicle collision with high-pressure gas supplied from an inflator.

[0002]

2. Description of the Related Art An air belt device which accommodates a bag inside a shoulder belt of a seat belt and inflates the bag in the event of a vehicle collision to softly restrain an occupant is already known from Japanese Patent Application Laid-Open No. 6-56001. .

In the conventional seat belt device in which the belt does not expand, the shoulder belt is retracted from above the center pillar into the retractor when the belt is not used, and the tongue fixed to the end of the shoulder belt is located above the center pillar. Has stopped. Therefore, when the occupant sits on the seat and wears the seat belt device, the tongue stopped above the center pillar can be easily grasped and connected to the buckle.

However, in the case of an air belt device in which the shoulder belt is inflated, the shoulder belt containing the bag becomes thick and cannot be pulled into the center pillar, so that most of the shoulder belt is exposed to the outside of the center pillar. doing. In order to prevent the shoulder belt exposed to the outside of the center pillar from obstructing, the wrap belt is wound around a retractor provided at the lower part of the center pillar so that the exposed shoulder belt follows the center pillar. Stored in a state where

[0005]

By the way, when the lap belt is wound around a retractor provided below the center pillar in a state where the shoulder belt is exposed, the tongue device provided at the end of the shoulder belt and the lap belt becomes a center pillar. The seat enters the gap between the lower part of the seat and the seat, and the occupant cannot easily grasp the tongue device, which causes a problem that it takes time to mount the air belt device.

The present invention has been made in view of the above circumstances, and has as its object to enable an occupant to easily grip the tongue device when wearing the air belt device.

[0007]

According to a first aspect of the present invention, there is provided a slip guide provided on an upper portion of a center pillar and having one end supported by a first emergency lock type retractor. A shoulder belt that can be pulled out, a lap belt that is supported at one end by a second emergency lock retractor and that can be pulled out from a lap belt draw-out opening provided below the center pillar, and provided at the other end of the shoulder belt and the lap belt A tongue device, a buckle device provided on a seat base near the center of the vehicle body and coupled with the tongue device, an inflator for generating high-pressure gas at the time of collision of the vehicle, and a housing at the other end half of the shoulder belt. A bag that is inflated with high-pressure gas generated by the inflator. In an air belt device in which the other half of the other end side of the belt is constantly exposed to the outside of the center pillar, a shoulder belt moving means for moving the upper end of the exposed portion of the shoulder belt upward when the tongue device and the buckle device are not connected is provided. Characterized by being provided above the

According to the above configuration, even if the one end of the shoulder belt is pulled in by the first emergency lock type retractor, the other half of the shoulder belt having the bag stored therein cannot be stored inside the center pillar. When the one end of the lap belt is pulled in with the second emergency lock type retractor, the tongue device enters the vicinity of the lap belt draw-out opening below the center pillar, making it difficult for the occupant to reach and making the mounting work of the air belt device difficult. . However, by moving the upper end of the exposed portion of the shoulder belt upward by the shoulder belt moving means, the occupant's hand can easily reach the shoulder belt, and the tongue device can be easily gripped by pulling the shoulder belt. Furthermore,
When not attached to the air belt device, the length of the exposed portion of the shoulder belt (that is, the length of the portion where the bag of the shoulder belt is stored) is sufficiently secured without loosening the shoulder belt, and the binding performance of the air belt device is secured. Can be increased.

According to a second aspect of the present invention, there is provided a shoulder belt having one end supported by the first emergency lock type retractor and capable of being pulled out from a slip guide provided above the center pillar, and one end provided with the second emergency lock retractor. A wrap belt supported by a lock type retractor that can be pulled out from a lap belt draw-out opening provided at a lower portion of the center pillar, a tongue device provided at the other end of the shoulder belt and the lap belt, and a seat base near the center of the vehicle body. A buckle device provided and coupled with the tongue device, an inflator that generates high-pressure gas at the time of a vehicle collision, and a bag that is housed in the other half of the shoulder belt and that is inflated with the high-pressure gas generated by the inflator. And the other half of the shoulder belt containing the bag is a center pillar. In an air belt device which is always exposed to the outside, a lap belt moving means for moving a lap belt from a rear position of the center pillar to a front position of the center pillar when the tongue device and the buckle device are combined is provided below the center pillar. It is characterized by having.

According to the above configuration, even if one end of the shoulder belt is pulled in by the first emergency lock type retractor, the other half of the shoulder belt having the bag stored therein cannot be stored in the center pillar. When the one end of the lap belt is pulled in with the second emergency lock type retractor, the tongue device enters the vicinity of the lap belt draw-out opening below the center pillar, making it difficult for the occupant to reach and making the mounting work of the air belt device difficult. . However, by moving the lap belt to the front of the vehicle body by the lap belt moving means, the occupant's hand can easily reach the tongue device, and even when the tongue device cannot be directly reached, the shoulder belt can be gripped to grip the tongue device. be able to.

According to a third aspect of the present invention, there is provided a shoulder belt having one end supported by the first emergency lock type retractor and capable of being pulled out from a slip guide provided above the center pillar, and one end provided with the second emergency lock. A wrap belt supported by a lock type retractor that can be pulled out from a lap belt draw-out opening provided at a lower portion of the center pillar, a tongue device provided at the other end of the shoulder belt and the lap belt, and a seat base near the center of the vehicle body. A buckle device provided and coupled with the tongue device, an inflator that generates high-pressure gas at the time of a vehicle collision, and a bag that is housed in the other half of the shoulder belt and that is inflated with the high-pressure gas generated by the inflator. And the other half of the shoulder belt containing the bag is a center pillar. In the air belt device which is always exposed to the outside, when the tongue device and the buckle device are not coupled, the tongue device is provided with a tongue device position restricting means for restricting the position of the tongue device to the front side of the vehicle body with respect to the lap belt withdrawal opening. Features.

According to the above configuration, even if one end of the shoulder belt is retracted by the first emergency lock type retractor, the other half of the shoulder belt having the bag stored therein cannot be stored in the center pillar. When the one end of the lap belt is pulled in with the second emergency lock type retractor, the tongue device enters the vicinity of the lap belt draw-out opening below the center pillar, making it difficult for the occupant to reach and making the mounting work of the air belt device difficult. . However, by restricting the position of the tongue device to the front side of the vehicle body from the lap belt withdrawal opening by the tongue device position restricting means, the occupant's hand can easily reach the tongue device and the work of mounting the air belt device can be facilitated. it can.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the tongue device position regulating means is a lap belt guide member provided on a seat base near the outside of the vehicle body. The guide member slidably guides the lap belt and engages with the tongue device to prevent the tongue device from being pulled toward the lap belt withdrawal opening.

According to the above construction, even if one end of the lap belt is pulled in by the second emergency lock type retractor, the lap belt guide member provided on the seat base near the vehicle body engages with the tongue device, and the tongue device is moved. Since the tongue device is prevented from being drawn toward the lap belt withdrawal opening, the tongue device can be held at a position where the occupant can easily reach.

According to a fifth aspect of the present invention, in addition to the configuration of the third aspect, the tongue device position regulating means is a tongue device storage portion provided on a seat base near the outside of the vehicle body. The storage unit is characterized in that the tongue device is immovably stored to prevent the tongue device from being drawn toward the lap belt withdrawal opening.

According to the above construction, even if one end of the lap belt is pulled in by the second emergency lock type retractor, the tongue device storage recess provided on the seat base near the vehicle body stores the tongue device, and the tongue device is wrapped. Since the tongue device is prevented from being drawn toward the belt withdrawal opening, the tongue device can be held at a position where the occupant can easily reach.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 5 show a first embodiment of the present invention. FIG. 1 is a side view of a front seat portion of a vehicle, FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1, and FIG. 3 is an air belt device. Perspective view of the
FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 3, and FIG.

As shown in FIGS. 1 to 3, an air belt device for restraining an occupant (driver in the embodiment) to the front right seat 1 includes a shoulder belt retractor 3 provided below a center pillar 2, A lap belt retractor 4 provided below the shoulder belt retractor 3, a shoulder belt 6 pulled out from the shoulder belt retractor 3 and extending through a slip guide 5 provided above the center pillar 2, a lap belt 7 that is withdrawn from the belt retractor 4 through the lap belt withdrawal opening 2 ₁ of the center pillar 2, a tongue device 8 fixed to an end portion of the shoulder belt 6 and the lap belt 7, composed of a seat frame or a slide rail The tongue device 8 is fixed to the seat base 10 and Provided that the buckle device 9, an inflator 11 provided integrally with the buckle device 9.

The known emergency lock type retractor for shoulder belt 3 and retractor for lap belt 4 take up the shoulder belt 6 and the lap belt 7, respectively, so that they can be pulled out. When the vehicle is not normally detected, the belts 6 and 7 can be pulled out to allow the movement of the occupant's body. When the acceleration sensor detects an acceleration equal to or more than a predetermined value during a vehicle collision, the belts 6 and 7 are Is locked so that the occupant cannot be pulled out. The known inflator 11 ignites when an acceleration sensor detects acceleration equal to or higher than a predetermined value, and generates high-pressure gas due to combustion of a propellant. The shoulder belt retractor 3 constitutes a first emergency lock type retractor of the present invention, and the lap belt retractor 4 constitutes a second emergency lock type retractor of the present invention.

The lap belt 7 is composed of a plain synthetic fiber plain woven belt. On the other hand, the portion of the shoulder belt 6 that contacts the occupant's chest is composed of a cylindrical rubber bag 12 and a cover 13 that covers the outside, as shown in FIG. Normally, the bag 12 and the cover 13 have a flat band shape. However, when high-pressure gas is supplied from the inflator 11 to the bag 12, the bag 12 and the cover 13 are inflated to the state shown by a chain line in FIGS. . When the cover 13 made of a warp knit expands in the radial direction as the bag 12 expands, the cover 13 contracts in the longitudinal direction by that amount and generates initial tension on the shoulder belt 6.

A reacher 29 that swings back and forth by an actuator 28 is provided above the center pillar 2. The reacher 29 constitutes the shoulder belt moving means of the present invention. Reacher 29 consists arms 29 ₁ and the guide portion 29 _2, the shoulder belt 6 to the guide portion 29 ₂ is slidably inserted. The half of the shoulder belt 6 on the tongue device 8 side is thickened by storing the bag 12, so that the shoulder belt retractor 3 cannot draw the entire length of the shoulder belt 6 into the center pillar 2, The half of the shoulder belt 6 containing the belt 12 on the tongue device 8 side is always exposed outside the center pillar 2 (see FIG. 3).

Referring also to FIG. 4, the buckle device 9
The inflator 11 is fixed to a lower portion of the buckle housing 14 constituting the main body, and a buckle 15 is fixed to an upper portion thereof. The lower end of the anchor member 17 whose upper end is fixed to the buckle housing 14 with the bolt 16 is
It is supported by the seat base 10 via the fulcrum pin 18 so as to be able to swing back and forth. The connection port 19 opened on the upper wall of the buckle housing 14 and the inflator 11 communicate with each other through a gas passage 20 formed inside the buckle housing 14.

The bag 12 and the cover 13 of the shoulder belt 6 fitted on the upper outer peripheral surface of the tongue housing 21 of the tongue device 8 and the lap belt 7 superposed on the outside thereof are tightened and fixed by the annular holder 22. Is done. A tongue 23 having an upper half embedded in a tongue housing 21 is provided with a bolt 24 penetrating through the holder 22, the lap belt 7, the cover 13 and the bag 12.
Is fixed to the tongue housing 21. The connection port 1 of the buckle housing 14 is provided on the lower surface of the tongue housing 21.
9, a connection pipe 25 that can be inserted is protruded. A gas passage 26 that connects the connection port 19 to the inside of the bag 12 is formed inside the tongue housing 21 and the connection pipe 25. A release button 27 for separating the tongue 23 coupled to the buckle 15 is provided on the buckle housing 14.

Next, the operation of the embodiment of the present invention having the above configuration will be described.

When the air belt device shown by a solid line in FIG. 5 is not worn, the shoulder belt retractor 3 cannot pull the entire length of the shoulder belt 6 into the center pillar 2 and the tongue device 8 containing the bag 12 is closed. One half is exposed outside the center pillar 2. On the other hand, the retractor 4 for the lap belt draws substantially the entire length of the lap belt 7 into the center pillar 2. Therefore, the tongue device 8 connected to the shoulder belt 6 and the lap belt 7 is hidden in a narrow space between the rear portion of the seat cushion 30 and the lower portion of the center pillar 2, and the occupant sitting on the seat 1 can use the tongue device 8. To the buckle device 9, the tongue device 8 cannot be easily grasped. If the occupant grasps the shoulder belt 6 and turns upward, the tongue device 8 can be pulled up to a position where the occupant can reach it.
Hiding in the narrow space between the center pillar 2 and
It is not easy to grasp the shoulder belt 6.

Therefore, in this embodiment, when the air belt device is not worn, the reacher 29 is swung upward as shown by the solid line in FIG. 5, and the upper end of the exposed portion of the shoulder belt 6 is raised to a high position. In this state, the seat back 3
Since the length of the shoulder belt 6 exposed forward and upward from the space between the first and center pillars 2 is increased, the occupant can easily grasp the exposed portion of the shoulder belt 6. Therefore, if the shoulder belt 6 is pulled upward and the tongue device 8 is pulled up to an accessible position, the tongue device 8 can be easily grasped and connected to the buckle device 9. When the tongue device 8 and the buckle device 9 are connected, the actuator 28 operates or is pulled by the shoulder belt 6, and the reacher 29 swings from the solid line position to the chain line position in FIG. You can attach it.

Further, when the air belt device is not mounted, the reacher 29 is swung upward to raise the upper end of the exposed portion of the shoulder belt 6 to a high position, so that the shoulder belt 6 is not loosened and the shoulder belt 6 is not loosened.
Length of the exposed portion of the bag, that is, the bag 12 of the shoulder belt 6
The length of the portion where the is stored can be maximized. As a result, a wide range from the chest to the neck of the occupant can be restrained by the inflated shoulder belt 6, and the restraint performance can be enhanced.

When the tongue 23 of the tongue device 8 is connected to the buckle 15 of the buckle device 9, the tongue device 8
Is inserted into the connection port 19 of the buckle device 9. When the acceleration sensor detects an acceleration equal to or higher than a predetermined value due to a vehicle collision, the inflator 11 ignites to generate high-pressure gas, and the generated high-pressure gas is supplied to the buckle housing 14.
Is supplied into the bag 12 of the shoulder belt 6 through the gas passage 20 of the tongue and the gas passage 26 of the tongue housing 21 to inflate the bag 12. When the shoulder belt 6 expands in this way, the contact area with the occupant's chest increases compared to the shoulder belt 6 before expansion, so that the occupant can be restrained more softly.

Next, a second embodiment of the present invention will be described with reference to FIGS.
An embodiment will be described.

In the second embodiment, a reacher 32 as a lap belt moving means is provided below the center pillar 2, and the reacher 32 is swung in the front-rear direction by an actuator 33. Reacher 32 is provided with an arm portion 32 ₁ and the guide portion 32 _2, the lap belt 7 is slidably inserted into the guide portion 32 _2.

Then, as shown in FIG.
The actuator 33 is activated when the operator
Swings forward from the chain line position to the solid line position, and moves the lower portion of the lap belt 7 forward. Then lap belt 7
The lower portion of the tongue device 8 and the shoulder belt 6 is moved forward from behind the center pillar 2 and protrudes forward from the gap between the seat 1 and the center pillar 2.
Can be easily grasped, and the operation of coupling the tongue device 8 to the buckle device 9 can be easily performed.

In addition, the length of the exposed portion of the shoulder belt 6 is maximized when the air belt device in which the reacher 32 is in the chain line position is not worn, so that the shoulder belt 6 is not loosened, and the shoulder belt 6 is not loosened. 6
By increasing the length of the portion where the bag 12 is stored, the binding performance can be enhanced.

Next, a third embodiment of the present invention will be described with reference to FIGS.

The third embodiment is directed to a seat base 1 on the outside of a vehicle body.
A lap belt guide member 34 for slidably guiding the lap belt 7 is provided on the side surface of the wrap belt 7. The lap belt guide member 34 constitutes the tongue device position regulating means of the present invention.

According to the third embodiment, even when the lap belt 7 is wound around the lap belt retractor 4 provided below the center pillar 2, the tongue device 8 interferes with the lap belt guide member 34. Since the winding amount of the lap belt 7 is regulated, the tongue device 8 is prevented from entering deeply into the lower part of the center pillar 2 and the gap between the sheets 1. Thereby, the occupant can easily grasp the tongue device 8 when wearing the air belt device, and the operability is improved.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.

In the fourth embodiment, the seat base 1 outside the vehicle body is used.
A box-shaped tongue device storage section 35 for storing the tongue device 8 is provided on the side surface of the “0”. The tongue device storage section 35 constitutes the tongue device position regulating means of the present invention.

According to the fourth embodiment, the tongue device 8 is housed in the tongue device housing portion 35 when the air belt device is not worn, so that the tongue device 8 is wrapped around the lap belt retractor 4 provided below the center pillar 2. Even if the belt 7 is wound up, the tongue device 8 is prevented from staying inside the tongue device storage portion 35 and deeply entering the lower part of the center pillar 2 and the gap between the sheets 1. This allows
The occupant can easily grasp the tongue device 8 when wearing the air belt device, and the operability is improved.

Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof.

For example, in the embodiment, the air belt device on the driver's seat side is illustrated, but the present invention can be applied to the air belt device on the passenger seat side.

[0042]

As described above, according to the first aspect of the present invention, by moving the upper end of the exposed portion of the shoulder belt upward by the shoulder belt moving means, the hand of the occupant can easily reach the shoulder belt. Thus, the tongue device can be easily grasped by pulling the shoulder belt.
In addition, when the shoulder belt is not worn, the length of the exposed portion of the shoulder belt (that is, the length of the portion where the bag of the shoulder belt is stored) is sufficiently secured without loosening the shoulder belt, and the air belt device is restrained. Performance can be enhanced.

According to the second aspect of the present invention,
By moving the lap belt forward by the lap belt moving means, the occupant's hand can easily reach the tongue device, and even when the tongue device cannot be directly reached, the shoulder belt can be gripped by grasping the tongue device. it can.

According to the third aspect of the present invention,
By restricting the position of the tongue device to the front of the vehicle body from the lap belt withdrawal opening by the tongue device position regulating means,
The hand of the occupant can easily reach the tongue device, and the work of mounting the air belt device can be facilitated.

According to the invention described in claim 4,
Even if one end of the lap belt is pulled in by the second emergency lock type retractor, the lap belt guide member provided on the seat base near the outside of the vehicle body engages with the tongue device, and the tongue device is pulled toward the lap belt withdrawal opening. Therefore, the tongue device can be held at a position easily accessible to the occupant.

According to the invention described in claim 5,
Even if one end of the lap belt is pulled in by the second emergency lock type retractor, the tongue device storage recess provided in the seat base near the vehicle body stores the tongue device, and the tongue device is drawn toward the lap belt withdrawal opening. , The tongue device can be held at a position easily accessible to the occupant.

[Brief description of the drawings]

FIG. 1 is a side view of a front seat portion of an automobile.

FIG. 2 is a view in the direction of arrows in FIG. 1;

FIG. 3 is a perspective view of an air belt device.

FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is an explanatory diagram of an operation.

FIG. 6 corresponds to FIG. 2 according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a reacher mounting unit.

FIG. 8 is an explanatory diagram of an operation.

FIG. 9 corresponds to FIG. 2 according to a third embodiment of the present invention.

FIG. 10 is a view taken along line 10-10 of FIG. 9;

FIG. 11 is a view corresponding to FIG. 2 according to a fourth embodiment of the present invention.

FIG. 12 is a view taken along line 12-12 of FIG. 11;

[Explanation of symbols]

2 center pillar 2 ₁ lap belt pull-out opening 3 shoulder belt retractor (first emergency lock type retractor) 4 lap belt retractor (second emergency lock type retractor) 5 slip guide 6 shoulder belt 7 lap belt 8 tongue device 9 Buckle device 10 Seat base 11 Inflator 12 Bag 29 Reacher (Shoulder belt moving means) 32 Reacher (Lap belt moving means) 34 Lap belt guide member (Tung device position restricting means) 35 Tongue device storage (Tang device position restricting means)

Claims (5)

[Claims] 1. A shoulder belt (6) supported at one end by a first emergency lock retractor (3) and capable of being pulled out from a slip guide (5) provided above a center pillar (2); The lap belt (7) supported by the emergency lock type retractor (2) and capable of being pulled out from the lap belt pull-out opening (2 ₁ ) provided below the center pillar (2).
And the shoulder belt (6) and the lap belt (7)
A tongue device (8) provided at the other end of the vehicle, a buckle device (9) provided on a seat base (10) near the center of the vehicle body and coupled with the tongue device (8), Inflator (1
1) and a bag (12) housed in the other half of the shoulder belt (6) and inflated by high-pressure gas generated by the inflator (11), and stores the bag (12). When the tongue device (8) and the buckle device (9) are not connected to each other, the shoulder belt (6) is connected to the air belt device in which the other half of the shoulder belt (6) is always exposed outside the center pillar (2). An air belt device characterized in that a shoulder belt moving means (29) for moving the upper end of the exposed portion upward is provided above the center pillar (2). 2. A shoulder belt (6), one end of which is supported by a first emergency lock type retractor (3) and which can be pulled out from a slip guide (5) provided above a center pillar (2); The lap belt (7) supported by the emergency lock type retractor (2) and capable of being pulled out from the lap belt pull-out opening (2 ₁ ) provided below the center pillar (2).
And the shoulder belt (6) and the lap belt (7)
A tongue device (8) provided at the other end of the vehicle, a buckle device (9) provided on a seat base (10) near the center of the vehicle body and coupled with the tongue device (8), Inflator (1
1) and a bag (12) housed in the other half of the shoulder belt (6) and inflated by high-pressure gas generated by the inflator (11), and the bag (12) is housed. When the tongue device (8) and the buckle device (9) are connected to each other in an air belt device in which the other half of the shoulder belt (6) is always exposed outside the center pillar (2). An air belt device characterized in that a lap belt moving means (32) is provided below the center pillar (2) for moving the wrap belt from a position behind the center pillar (2) to a position in front of the center pillar (2). 3. A shoulder belt (6) supported at one end by a first emergency lock type retractor (3) and capable of being pulled out from a slip guide (5) provided above a center pillar (2); The lap belt (7) supported by the emergency lock type retractor (2) and capable of being pulled out from the lap belt pull-out opening (2 ₁ ) provided below the center pillar (2).
And the shoulder belt (6) and the lap belt (7)
A tongue device (8) provided at the other end of the vehicle, a buckle device (9) provided on a seat base (10) near the center of the vehicle body and coupled with the tongue device (8), Inflator (1
1) and a bag (12) housed in the other half of the shoulder belt (6) and inflated by high-pressure gas generated by the inflator (11), and the bag (12) is housed. When the tongue device (8) and the buckle device (9) are not connected to each other in an air belt device in which the other half of the shoulder belt (6) is always exposed outside the center pillar (2), the tongue device ( An air belt device comprising: a tongue device position restricting means for restricting the position of 8) to the front side of the vehicle body with respect to the lap belt withdrawal opening (2 ₁ ). 4. The tongue device position regulating means is a lap belt guide member (34) provided on a seat base (10) near the outside of the vehicle body, and the lap belt guide member (34) controls the lap belt (7). The slidably guided tongue device (8) engages with the tongue device (8) to prevent the tongue device (8) from being drawn into the lap belt withdrawal opening (2 ₁ ). 4. The air belt device according to 3. 5. The tongue device position restricting means is a tongue device storage portion (35) provided on a seat base (10) near the outside of the vehicle body, and the tongue device storage portion (35) controls the tongue device (8). The air belt device according to claim 3, characterized in that the tongue device (8) is immovably housed to prevent the tongue device (8) from being drawn into the lap belt withdrawal opening (2 ₁ ).