JP6333662B2 - Seat belt assist device and vehicle seat - Google Patents

Description

  The present invention relates to a seat belt assist device and a vehicle seat, and more particularly to a seat belt assist device and a vehicle seat that can move at least a part of the seat belt to a position where a seated person can easily reach.

  Conventionally, in order to make it easy for a seated person of a vehicle seat to take a seat belt, a belt movable member provided in an upper portion of a seat back is projected forward or upward, and a part of the seat belt is pushed forward or upward. Are known (for example, Patent Documents 1 and 2).

In the seat belt-integrated vehicle seat described in Patent Literature 1, a belt movable member is attached to the upper portion of the left and right side portions of the seat back so as to be retractable.
The seat belt extends downward from a belt guide (drawer port) provided at a position higher than the belt movable member in the side portion, and is placed on the side portion.
The belt movable member is disposed so as to be movable between a storage position stored in the storage portion of the seat back and an extended position that extends from the storage position to the front side of the seat and pushes a part of the seat belt forward.
With the above-described configuration, the seat belt mounting workability by the seated person is improved.

In the vehicle rear seat described in Patent Literature 2, a belt movable member (belt anchor) integrated with a belt guide is attached to the upper portion of the seat back in the center portion in the left-right width direction so as to be retractable.
The seat belt is guided by a belt guide on the upper surface of the central portion, extends from the upper surface of the central portion to the front surface, and is placed on the central portion.
The belt movable member is disposed so as to be rotatable between a storage position stored in the storage recess of the seat back and a protruding position that protrudes upward from the storage position and pushes a part of the seat belt upward.
With the above configuration, when the occupant is seated in the central seat of the vehicle rear seat, the belt movable member can be always protruded, and when the occupant is not seated, the belt movable member can be stored to ensure a rear view.

JP 2004-306642 A Japanese Utility Model Publication No. 6-60562

However, in the vehicle seats such as Patent Documents 1 and 2, special consideration is given to notifying the seated person that the belt movable member is in the extended position (projecting position), for example, by notification means such as sound and vibration. It wasn't.
For this reason, there is a possibility that the seated person may accidentally contact the belt movable member at the extended position (projecting position) or that other members may interfere with each other.

Moreover, the belt movable member like patent document 1 had the comparatively complicated expansion | extension mechanism for pushing a seatbelt forward, and had become large.
Although the belt movable member as in Patent Document 2 is miniaturized by using a rotation mechanism, a mechanism for guiding the seat belt is necessary because it is integrated with the belt guide, resulting in an increase in size. It was. Further, since the belt movable member protrudes upward from the seat back even after the occupant is seated, there is a concern that it may be an obstacle to the occupant seated.

The present invention has been made in view of the above problems, and an object of the present invention is to notify that a part of the seat belt has been moved to a position where a seated person can easily take and a part of the seat belt has been moved. An object of the present invention is to provide a seat belt assist device and a vehicle seat that can be used.
Another object of the present invention is to provide a seat belt assist device and a vehicle seat having a compact and simple configuration.

According to the seat belt assist device according to the present invention, the subject is attached to a seat back as a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is delivered from a seated person. A seat belt assist device capable of being moved to an easy position, wherein the seat belt assist device is attached to the seat back and is stored in the seat back, and the protrusion that protrudes from the seat back and pushes out a part of the seat belt. A movable member that moves between the position and an informing means for notifying that the movable member is in the protruding position, and the movable member is attached to be accommodated in a storage portion provided in the seat back. is, the notification means is disposed in the space of the housing part in the storage position is solved Rukoto by.
Further, according to the seat belt assist device of the present invention, the subject is attached to a seat back that is a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is used as a seated person. A seat belt assist device that can be moved to a position that can be easily reached from the seat back, and is attached to the seat back, and is stored in the seat back, and protrudes from the seat back, and a part of the seat belt is A movable member that moves between the protruding position to be pushed out and an informing means for informing that the movable member is in the protruding position, and an air bag module is provided in the seat back, wherein the informing means includes: The problem is solved by being disposed above the airbag module.
In the above-described seat belt assist device, the notification unit may be disposed at a position overlapping the airbag module in the left-right width direction.

  As described above, since the informing means for informing that the movable member is in the protruding position is provided, for example, by using the informing means such as illumination, sound, vibration, etc., a part of the seat belt is moved to a position that is easily taken by the seated person. It is possible to realize a seatbelt assist device capable of notifying that it has been performed.

At this time, the movable member is attached to the seat back via a rotation shaft, and is preferably rotated between the storage position and the protruding position protruding forward from the seat back.
As described above, in order to make it easy for the seated person to take the seat belt, the movable member protrudes and rotates forward of the seat and pushes out a part of the seat belt, so that the seat belt has a relatively compact and simple configuration. It becomes an assist device.

At this time, the notification means may include a light emitting device attached to or around the movable member, and the light emitting device may emit light when the movable member is in the protruding position.
As described above, since the seated person is notified by causing the light emitting device to emit light, the seated person can easily understand.

At this time, the light emitting device may be attached to the movable member, and the notification unit may cause the light emitting device to continuously emit light while the movable member is in the protruding position.
With the above-described configuration, the notification means is more easily understood by the seated person.

At this time, the movable member is attached to a lateral side portion of the seat back so as to push out a part of the seat belt placed on the side portion from the rear when in the protruding position. The light emitting device protrudes and is preferably attached to a side surface on the seated person side in the left-right direction of the movable member.
As described above, since the movable member protrudes so as to push out a part of the seat belt from the rear when in the protruding position, it becomes a seat belt assist device having a compact and simple configuration.
And since a light-emitting device is attached to the side surface by the side of a seated person in the left-right direction among movable members, an alerting | reporting means becomes easier to understand for a seated person.

At this time, the light emitting device may be attached to the projecting tip side of the movable member.
With the above configuration, it becomes easy to secure the light emission range of the light emitting device.

Further, according to the seat belt assist device of the present invention, the subject is attached to a seat back that is a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is used as a seated person. A seat belt assist device that can be moved to a position that can be easily reached from the seat back, and is attached to the seat back, and is stored in the seat back, and protrudes from the seat back, and a part of the seat belt is A movable member that moves between the projecting position to be pushed out and an informing means for informing that the movable member is in the projecting position, and the informing means is attached to the movable member or around the movable member. a light-emitting device, the light emitting device to emit light when the movable member is in the projected position, the light emitting device, the movable portion There is solved by attached to the rear surface serving as the seat back side of the movable member when you are in the storage position.
With the above configuration, the light emitting device can be easily protected when the movable member is in the storage position, and the size of the seat belt assist device can be suppressed.

At this time, the movable member is attached to the seat back via a pivot shaft, the pivot shaft is attached to the upper end portion of the movable member, and the light emitting device is attached to the lower end portion of the movable member. Good to have been.
With the above structure, the light emitting device has a compact and simple structure, and the light emission range of the light emitting device can be easily secured.
And since the rotating shaft is attached to the upper end part of a movable member, the rotational locus of a movable member can be enlarged and the movement amount of a part of seat belt can be ensured.

Further, according to the seat belt assist device of the present invention, the subject is attached to a seat back that is a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is used as a seated person. A seat belt assist device that can be moved to a position that can be easily reached from the seat back, and is attached to the seat back, and is stored in the seat back, and protrudes from the seat back, and a part of the seat belt is A movable member that moves between the projecting position to be pushed out and an informing means for informing that the movable member is in the projecting position, and the informing means is attached to the movable member or around the movable member. a light-emitting device, the light emitting device to emit light when the movable member is in the protruding position, said movable member, said seat Retractable mounted in the housing portion provided on the click, the light emitting device, the movable member is achieved by Rukoto disposed in a forward position than the housing portion when you are in the protruding position.
With the above configuration, it becomes easier to secure the light emission range of the light emitting device.

At this time, the light emitting device may be attached to the housing portion together with the movable member so that the light emitting device can start to emit light when the movable member moves from the storage position.
As described above, since the light-emitting device is attached to the storage unit together with the movable member, the light-emitting device can be protected from being damaged or dirty.
And since the notification means starts light emission of the light emitting device when the movable member moves from the storage position, the seated person can easily recognize the position of the movable member when the movable member starts moving.

At this time, it is preferable that the movable member is attached so as to be housed in a housing portion provided in the seat back, and the light emitting device is disposed in a space of the housing portion.
With the above configuration, it becomes easier to protect the light emitting device from scratches and dirt.

According to the seat belt assist device according to the present invention, the subject is attached to a seat back as a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is delivered from a seated person. A seat belt assist device capable of being moved to an easy position, wherein the seat belt assist device is attached to the seat back and is stored in the seat back, and the protrusion that protrudes from the seat back and pushes out a part of the seat belt. And a light emitting device attached to the movable member or the periphery of the movable member. The light emitting device includes: a movable member that moves between the movable member; and a notification unit that notifies that the movable member is in the protruding position. wherein the said light emitting device to emit light when the movable member is in the projected position, the light emitting device emits a light source And a light guide that guides light emitted from the light source body, and at least one of the front and back surfaces of the movable member has the light guide, the movable member, and the back surface. a cover member covering the light guide, is attached to at least the movable member and the light guide body has a color or color pattern is difference in brightness between the movable member and the light guide body It is solved by .
With the above configuration, for example, when the light emitting device is controlled not to emit light during the daytime but to emit light during the nighttime, at least the movable member and the light guide body are By having a color tone or a color pattern with a difference between light and dark, a seated person can easily recognize the presence of the movable member even in the daytime.
In particular, when an elderly person whose vision has deteriorated is a seated person, the color tone or color pattern having a difference in brightness and darkness according to the present invention is very significant.

Further, according to the seat belt assist device of the present invention, the subject is attached to a seat back that is a backrest portion of a vehicle seat, and at least a part of the seat belt placed on the seat back is used as a seated person. A seat belt assist device that can be moved to a position that can be easily reached from the seat back, and is attached to the seat back, and is stored in the seat back, and protrudes from the seat back, and a part of the seat belt is A movable member that moves between the projecting position to be pushed out and an informing means for informing that the movable member is in the projecting position, and the informing means is attached to the movable member or around the movable member. a light-emitting device, the light emitting device to emit light when the movable member is in the projected position, the light emitting device, the seated person It is solved by that it comprises a light emitter for emitting light, and angle adjusting means for adjusting the light distribution angle of the light emitting body, the towards.
With the above configuration, the light emitting device can illuminate an arbitrary place toward the seated person. For example, it becomes a reading light for a seated person.

A vehicle seat provided with the seat back and the seat belt assist device can also be realized.
With the above configuration, the vehicle seat is capable of notifying that a part of the seat belt has been moved to a position that is easily taken by the seated person.

According to the present invention, for example, it is possible to realize a seat belt assist device capable of notifying that a part of the seat belt has been moved to a position that is easy for a seated person to take by means of notification means such as illumination, sound, and vibration.
According to the present invention, a seat belt assist device having a compact and simple configuration is provided.
According to the present invention, since the light emitting device emits light to notify the seated person, the notification means is easy for the seated person to understand.

According to the present invention, it has a compact and simple configuration, and the notification means is more easily understood by the seated person.
According to the present invention, it becomes easy to secure the light emission range of the light emitting device.
According to the present invention, the light emitting device can be easily protected when the movable member is in the storage position, and the size of the seat belt assist device can be suppressed.

According to the present invention, the light emitting device has a compact and simple structure, and it is easy to secure the light emission range of the light emitting device. In addition, it is possible to increase the rotation locus of the movable member and to secure a movement amount of a part of the seat belt.
According to the present invention, the light-emitting device can be protected from scratches and dirt. Further, when the movable member starts moving, the seated person can easily recognize the position of the movable member.
According to the present invention, for example, when the light emitting device is controlled not to emit light in the daytime but to emit light in the nighttime, the seated person can easily recognize the presence of the movable member even in the daytime.
In particular, when an elderly person whose vision has deteriorated is a seated person, the color tone or color pattern having a difference in brightness and darkness according to the present invention is very significant.
According to the present invention, the vehicle seat is capable of notifying that a part of the seat belt has been moved to a position that is easily taken by a seated person.

It is an appearance perspective view of a vehicular seat concerning this embodiment. It is a principal part enlarged view of FIG. 1, and is an external appearance perspective view which shows a belt assist apparatus. It is a disassembled perspective view of a belt assist device. FIG. 4A is a side cross-sectional view of the belt assist device, FIG. 4A is a storage position, and FIG. 4B is an explanatory view showing a protruding position. It is a block diagram which shows the electrical structure of a belt assist apparatus. It is a flowchart which shows an example of control of a belt assist apparatus. It is an external appearance perspective view of the belt assist apparatus which concerns on 2nd Embodiment. It is a disassembled perspective view of the belt assist apparatus which concerns on 2nd Embodiment. It is a disassembled perspective view of the belt assist apparatus which concerns on 2nd Embodiment. It is an external appearance perspective view of the belt assist apparatus which concerns on 3rd Embodiment. It is side surface sectional drawing of the belt assist apparatus which concerns on 3rd Embodiment. It is an external appearance perspective view of the belt assist apparatus which concerns on 4th Embodiment. It is front sectional drawing of the belt assist apparatus which concerns on 4th Embodiment. It is an external appearance perspective view of the belt assist apparatus which concerns on 5th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
The present embodiment is a vehicle seat equipped with a seat belt assist device that is attached to a seat back and can move a part of a seat belt placed on the seat back to a position that can be easily reached by a seated person. The seat back is attached to the seat recess via a pivot shaft, and moves up and down between the stowed position where it is stowed in the seat back and the projecting position that protrudes forward from the seat back and pushes out a part of the seat belt. The present invention relates to a vehicle seat invention comprising: a movable member that pivots in a moving manner; and an informing means that informs by light emission that the movable member is in a protruding position.
Note that the side on which the seated person sits with respect to the seat back of the vehicle seat is the front side.

The vehicle seat S of the present embodiment is a rear seat corresponding to, for example, a rear seat of a vehicle. In addition, in a vehicle provided with three rows of seats in the vehicle longitudinal direction, it can be used as a second row of middle seats.
As shown in FIG. 1, a vehicle seat S includes a seat body including a seat cushion 1, a seat back 2, and a headrest 3, and a seat belt assist device that is attached to an upper portion in left and right side portions of the seat back 2. 30 (hereinafter referred to as a belt assist device 30).
A belt guide 13 that guides the extending direction of the seat belt 10 is provided around the upper end of the left and right side portions of the seat back 2, specifically, at the rear portion of the left and right side portions.

The vehicle seat S uses the belt assist device 30 to move at least a part of the seat belt 10 placed on the left and right side portions of the seat back 2 to a position where the seated person can easily reach. It is a possible sheet.
Specifically, as shown in FIG. 2, the vehicle seat S is operated between the front surface of the seat back 2 and the seat belt 10 and the upper end of the seat back 2 and the seat belt by operating the belt assist device 30. 10 is a seat in which a part of the seat belt 10 can be pushed out from the rear so that there is a gap between the two.
The vehicle seat S is a seat that can notify a seated person by emitting light while the belt assist device 30 pushes out a part of the seat belt 10. Details will be described later.

As shown in FIG. 1, the seat cushion 1 is a seating portion that supports an occupant from below, and a cushion pad is placed on a cushion frame (not shown) serving as a skeleton and covered with a skin material from above the cushion pad. Has been configured.
The seat back 2 is a backrest portion that supports the back of the occupant from the back, and is configured by placing a cushion pad on a back frame (not shown) serving as a skeleton and covering with a skin material.
The left and right side portions of the seat back 2 are formed as a back side portion 20 that supports the upper body side portion of the seated person.
The headrest 3 is a head that supports the occupant's head from behind, and is configured by placing a cushion pad on a pillar (not shown) serving as a core material and covering with a skin material.

The seat belt 10 is a belt-like member that restrains the upper body of the occupant, and is placed on the back side portion 20 of the seat back 2 from the upper surface to the front surface.
A tongue plate 11 is slidably attached to the seat belt 10, and the tongue plate 11 is fitted to a buckle 12 provided at a predetermined position of the seat cushion 1.
The lower end side 10a of the seat belt 10 is drawn between the lower end of the seat back 2 and the rear end of the seat cushion 1, and is fixed at a predetermined position to a vehicle body member located behind the seat body. Further, the upper end side 10b is slidably inserted into the belt guide 13 located behind the upper end of the back side portion 20, and is pulled back from the upper end rear portion of the seat back 2 to the rear rear side, and the drawn end portion is not illustrated. It is attached to the automatic take-up device.

The belt guide 13 is made of hard resin, and is a member that guides the extending direction of the seat belt 10 forward, and includes a guide hole 13a through which the seat belt 10 can be inserted.
A belt assist device 30 is disposed in front of the belt guide 13.

The back side portion 20 is configured by placing a cushion pad on a resin side base 20a and covering with a skin material.
As shown in FIG. 2, the side base 20 a is composed of a frame member having a substantially inverted L-shaped longitudinal section, and houses the belt assist device 30 and the airbag module 60.
The side base 20a has a storage recess 21 recessed backward from the upper wall portion to the front wall portion at an upper position thereof, and an airbag storage recess 22 recessed rearward of the front wall portion at a position lower than the storage recess 21. And a belt-facing recess 23 in which the front wall portion is recessed rearward at a position below the airbag housing recess 22.

As shown in FIG. 3, the storage recess 21 is formed by fixing a concave storage plate 21b to a substantially rectangular opening portion 21a provided in the side base 20a by tapping.
Similarly, the airbag housing recess 22 and the belt-facing recess 23 are formed by tapping concave storage plates 22b and 23b to the substantially rectangular opening portions 22a and 23a provided on the side base 20a. Yes.
In the above configuration, as shown in FIGS. 2 and 3, the belt recess device 30 is stored in the storage recess 21 from the front side, and the airbag module 60 is stored in the airbag storage recess 22 from the front side. Has been.

As shown in FIG. 1, the belt-facing concave portion 23 is a long concave portion extending in the extending direction of the seat belt 10, and is disposed at a position facing a part of the seat belt 10. Is also formed to be wide.
Since a gap is formed between the belt-facing recess 23 and the seat belt 10, for example, it is considered that a child who is a seated person can grip the seat belt 10 while inserting a hand into the gap. .

As shown in FIG. 2, the belt assist device 30 is an assist device capable of pushing out a part of the seat belt 10 forward and upward, and additionally notifies that the part of the seat belt 10 has been pushed out by light emission. It is a device that can.
As shown in FIG. 3, the belt assist device 30 includes a motor 31 stored in the storage recess 21, and a concave support plate that is fixed to the storage recess 21 by tapping so as to cover the motor 31 from the front. 32, a rotation shaft 33 pivotally supported inside the support plate 32, a movable member 34 attached via the rotation shaft 33, and an auxiliary spring 35 that urges the movable member 34 toward the protruding position. It is configured.
Further, the belt assist device 30 is further provided with a light emitting device 40 (light guide 42) that is assembled so that a part thereof is exposed inside the movable member 34 and can emit light from the exposed portion.

As shown in FIG. 4, the belt assist device 30 causes the movable member 34 to be housed in the housing recess 21 of the seat back 2, and protrudes forward from the seat back 2 to push out a part of the seat belt 10. It is a device that rotates between positions.
The belt assist device 30 is integrally stored without substantially protruding from the outer surface of the seat back 2 when the movable member 34 is in the storage position shown in FIG. 4A, and the movable member 34 is shown in FIG. When in the projecting position shown in b), a part of the seat back 2 is projected from the outer surface of the seat back 2, and a part of the seat belt 10 is pushed forward and upward.
And it becomes the structure which can alert | report a seated person by light emission of the light-emitting device 40 that the movable member 34 exists in a protrusion position.

As shown in FIGS. 3 and 4, the motor 31 is a stroke motor that moves the movable member 34 up and down, and is attached to an attachment portion 32 a provided inside the support plate 32.
The motor 31 is mainly composed of a motor main body 31a and a cylinder 31b attached to the motor main body 31a so as to be movable up and down, and is connected to a vehicle body power supply 52 via a drive circuit 51 described later.
When driving power is supplied to the motor main body 31a, the cylinder 31b is configured to move down to a predetermined lowered position corresponding to each sensor described later, and to move up to a predetermined raised position (standby position). Yes. And when supply of drive electric power stops, it stops, and it has the composition held at the stop position.

A support shaft 31c extending in the left-right direction is pivotally supported in an opening provided at the projecting tip of the cylinder 31b.
The support shaft 31 c passes through an opening 32 b provided on the rear surface of the support plate 32, and is further supported by a support hole 34 b provided on the rear surface of the movable member 34.
With the above-described configuration, the motor 31 can move the movable member 34 through the support shaft 31c by moving the cylinder 31b up and down.

The support plate 32 is a resin plate that rotatably supports the movable member 34, and a pair of support holes 32 c for supporting the rotation shaft 33 is formed in the left and right side wall portions.
The rotation shaft 33 extends in the left-right direction, and is further supported by the shaft hole 34c and the pair of shaft holes 34d of the movable member 34 while being supported by the pair of support holes 32c.
The rotation shaft 33 is attached to the upper portion (upper end portion) of the support plate 32 and the movable member 34.

As shown in FIG. 3, the movable member 34 is formed of a substantially concave resin plate, and is a member for pushing out a part of the seat belt 10 from the rear. The movable position 34 shown in FIG. It is provided so as to be rotatable between the protruding position b).
As shown in FIG. 3, a reinforcing rib 34 a is formed on the rear surface of the front wall portion of the movable member 34 so as to extend rearward.
The reinforcing rib 34 a is formed with a support hole 34 b that supports the support shaft 31 c and a shaft hole 34 c that supports the rotation shaft 33.
A pair of shaft holes 34 d for further supporting the rotation shaft 33 is formed in the left and right side wall portions of the movable member 34.

A support rib 34e is formed at the extending end of the reinforcing rib 34a. The support rib 34e extends slightly toward the seated person in the left-right direction and supports the light guide 42, which will be described later.
Further, a substantially L-shaped slit 34f is formed to extend continuously on the front surface of the movable member 34 and the left and right side surfaces on the seated person side.
The slit 34f is provided to partially expose the light guide 42 to be described later.

In the above-described configuration, the movable member 34 is moved upwardly from the storage position of FIG. 4A so as to protrude forward of the seat around the rotation shaft 33, thereby moving to the protruding position of FIG. 4B. Is arranged.
The movable member 34 is configured such that the angle formed with the seat back 2 is approximately 90 degrees or less when moved to the protruding position.

In the above configuration, the movable member 34 includes left and right side wall portions that are bent continuously from the left and right end portions of the front wall portion and extend rearward.
Therefore, it is possible to prevent the seat belt 10 from being bitten when the movable member 34 moves from the storage position to the protruding position or when the movable member 34 is at the protruding position.

In the above configuration, a reinforcing rib 34 a is formed on the rear surface of the front wall portion of the movable member 34. The reinforcing rib 34a supports the support shaft 31c and the rotation shaft 33.
Therefore, the rigidity and mounting rigidity of the movable member can be improved.

In the above configuration, a pair of protrusions (not shown) protruding forward are formed at the left and right ends of the front surface of the movable member 34.
The pair of projecting portions function as a position restricting portion that sandwiches a part of the seat belt 10 in the left-right direction when the movable member 34 is in the projecting position, and can suppress a lateral displacement of the seat belt 10.

The light emitting device 40 is a device for notifying by light emission that the movable member 34 is in the protruding position, and as shown in FIG. 4, a light source body 41 that emits light, and as shown in FIGS. A light guide 42 that guides the light emitted from 41, and is connected to a vehicle body power supply 52 via a drive circuit 56, which will be described later, corresponding to a harness.
The light source body 41 is an LED light source unit, is attached to the inner surface of the upper wall portion of the movable member 34, and is arranged in a direction in which light can be emitted toward the light guide body 42.
Further, the light source body 41 is connected to the vehicle body power supply 52 via the drive circuit 56.

The light guide 42 is a light guide plate made of polycarbonate resin, and has a shape that can be assembled to a half portion on the side of the seated person in the left-right direction in the rear interior of the movable member 34. A part of the light guide 42 is assembled so as to be exposed to the outside from the slit 34 f of the movable member 34.
The light guide 42 introduces light from the light receiving surface on the light source body 41 side, reflects the introduced light as appropriate, and is exposed from the movable member 34 in detail toward the front surface and the side surface on the seated person side. It is designed to guide light toward the exposed portion 42a.
The exposed portion 42a projects from the main body portion of the light guide 42 to the front side and the seated person side (side surface side).

In the above configuration, the light guide 42 is attached to the back surface of the movable member 34 on the seat back side when the movable member 34 is in the storage position shown in FIG.
Therefore, the light guide 42 can be protected when the movable member 34 is in the storage position, and the size of the belt assist device 30 can be suppressed.

In the above configuration, as shown in FIGS. 3 and 4, the light guide 42 is arranged on the side surface on the seated person side in the left-right direction of the movable member 34, and the projecting tip side of the movable member 34 Is arranged.
Therefore, the light emission of the light guide 42 is easily understood by the seated person, and the light emission range of the light guide 42 is easily secured.

Further, in the above configuration, the light guide 42 is attached to the storage recess 21 together with the movable member 34, and is disposed at a position ahead of the storage recess 21 when the movable member 34 is in the protruding position.
Therefore, the light guide 42 can be protected from scratches and dirt, and the light emission range of the light guide 42 can be easily secured.

In the above configuration, the light guide 42 is supported by being surrounded by the front wall portion, the side wall portion on the seated person side, the reinforcing rib 34a, and the support rib 34e of the movable member 34.
Therefore, the assembling property of the light guide 42 is stabilized.

In the above configuration, a reflecting prism is formed on the side of the light guide 42 opposite to the seated side in the left-right direction, and fine wrinkles are formed on the side of the seated side by sandblasting (frosted). It is designed to process.
Therefore, surface emission can be performed with priority given to the side surface of the light guide 42 on the seated person side. Moreover, since the surface light can be emitted by diffusing light like frosted glass, the design is improved.

Further, in the above configuration, the light guide 42 and the movable member 34 have a color tone or color pattern having a difference in brightness between the light guide 42 and the movable member 34.
Specifically, a pigment, a dye, and a tendency material are kneaded in the light guide 42 so that at least the exposed portion 42a has a warm color, for example, amber or red. On the other hand, the movable member 34 is formed to have a cold-colored resin color, for example, white or blue.
Therefore, for example, when the light guide 42 is controlled not to emit light in the daytime but to light up the light guide 42 in the nighttime, the warming color is used in the daytime, and the movable member 34 is emitted in the nighttime by the light emission. The presence can be easily recognized by the seated person.
In particular, since the light guide 42 and the movable member 34 have a color tone or a color pattern with a difference in brightness, even if an elderly person with reduced vision is a seated person, the presence of the movable member 34 can be easily performed. Can be recognized.
In general, the skin material of the vehicle rear seat has a black color or a similar color, so that the difference in brightness between the light guide 42 and the movable member 34 becomes more conspicuous.

Next, the control means of the belt assist device 30 will be described with reference to FIGS.
As shown in FIG. 5, the belt assist device 30 includes an ECU (electronic control circuit) 50 as control means, drive circuits 51 and 56 that respectively supply drive power to the motor 31 and the light emitting device 40, and a drive circuit 51. And a vehicle body power supply 52 connected to the light emitting device 40 via a drive circuit 56.

The ECU 50 controls the drive power supplied from the drive circuit 51 to the motor 31 and controls the current of an electromagnetic clutch (not shown) to be turned on or off, thereby moving the motor 31 up and down, that is, rotating the movable member 34. Control.
Further, the ECU 50 controls driving power supplied from the driving circuit 56 to the light emitting device 40, and controls on / off of a current of an electromagnetic clutch (not shown), thereby controlling light emission and extinction of the light emitting device 40.

The ECU 50 is provided on the seat cushion 1, a seating sensor 53 that detects that a seated person is seated on the seat body, a door sensor 54 that is provided on the vehicle body door and detects that the vehicle body door is closed, and the buckle 12. A buckle sensor 55 provided to detect that the tongue plate 11 is coupled to the buckle 12 is connected to the buckle sensor 55.
In the above configuration, the ECU 50 controls the operation of the motor 31, that is, the operation of the movable member 34, and the light emission of the light emitting device 40 based on the signals input from these sensors.

The process of the flowchart in FIG. 6 is controlled by the ECU 50 and is repeatedly executed, for example, during a period in which the vehicle ignition switch is on.
The belt assist device 30 is normally in the storage position shown in FIG. 4A, and is stored integrally without protruding from the outer surface of the seat back 2, as shown in FIG. The seat belt 4 is in close contact with the outer surface of the seat back 2.

When the processing of the flowchart of FIG. 6 starts, first, in step ST1, it is determined whether the seating sensor 53 is on.
When the seating sensor 53 is not turned on (step ST1: No), since nobody is seated on the vehicle seat S, an off signal is transmitted to the drive circuit 51 and the drive circuit 51 drives the motor 31. Stop supplying power and end.

If the seating sensor 53 is on (step ST1: Yes), it is further determined in step ST2 whether the door sensor 54 is on.
If the door sensor 54 is not turned on (step ST2: No), the occupant is seated on the vehicle seat S, but the vehicle body door is not closed. Therefore, step ST2 is repeated until the vehicle body door is closed.

When the door sensor 54 is turned on (step ST2: Yes), it is assumed that the occupant is seated on the vehicle seat S and the vehicle body door is closed, but the seat belt 10 is not yet fastened. An ON signal is transmitted to the circuit 51, and driving power is supplied from the driving circuit 51 to the motor 31.
As a result, the motor 31 (cylinder 31b) moves down to a predetermined lowering position, and this lowering movement is transmitted to the movable member 34 via the support shaft 31c. The movable member 34 reaches the protruding position around the rotation shaft 33. Rotate upward. The movable member 34 rotates upward so as to protrude forward, thereby pushing the seat belt 10 forward and upward.

Next, in step ST <b> 4, an ON signal is transmitted to the drive circuit 56, and drive power is supplied from the drive circuit 56 to the light emitting device 40.
Thereby, the light guide 42 (exposed part 42a) starts light emission corresponding to (in conjunction with) the lowering operation of the motor 31. As for the timing of starting light emission, it is desirable that the light guide 42 starts to emit light when the movable member 34 starts moving.

Next, in step ST5, it is determined whether or not the buckle sensor 55 at the position corresponding to the seating sensor 53 turned on is turned on.
When the buckle sensor 55 is not turned on (step ST4: No), the driving power is continuously supplied from the driving circuit 51 to the motor 31 on the assumption that the occupant is seated but the seat belt 10 is not yet fastened.
When the motor 31 (cylinder 31b) has already been lowered to the lowered position, it is held at the lowered position even if the supply of drive power is stopped.

Step ST5 is repeated until the buckle sensor 55 is turned on or until a predetermined time elapses from the start of the lowering operation of the motor 31 in step ST6.
As a result, the motor 31 (cylinder 31b) is held in a predetermined lowered position, and the movable member 34 is held in a protruding position. The seat belt 10 is held while being pushed out by the movable member 34.
At this time, the light guide 42 continuously emits light while the movable member 34 is in the protruding position.
At this time, an announcement such as “Please fasten the seat belt 10”, a warning sound, and vibration may be generated simultaneously.

When the buckle sensor 55 is on (step ST5: Yes), the seated person of the vehicle seat S fastens the seat belt 10, and therefore another on signal is transmitted to the drive circuit 51 in step ST7. Then, drive power is supplied from the drive circuit 51 to the motor 31.
As a result, the motor 31 (cylinder 31b) moves up to a predetermined lift position (standby position), and this lift movement is transmitted to the movable member 34 via the support shaft 31c. The movable member 34 moves from the protruding position to the storage position. Rotate downward.
If the predetermined time has elapsed in step ST6, the seated person has not yet fastened the seat belt 10 but proceeds to step ST7.

When the motor 31 (cylinder 31b) has been raised to a predetermined ascending position (standby position) (step ST8: Yes), an off signal is transmitted to the drive circuit 56 in step ST9, and the drive circuit 56 to the light emitting device 40. The supply of driving power is stopped. Thereby, the light emitting device 40 is turned off.
Further, in step ST10, an off signal is transmitted to the drive circuit 51, and the supply of drive power from the drive circuit 51 to the motor 31 is stopped.
As a result, the motor 31 is held in the raised position, and the movable member 34 is held in the stored position.
If the motor 31 has not been raised to the raised position (step ST8: No), step ST8 is repeated.
The process of FIG. 6 is terminated through steps ST1 to ST10.

With the above processing flow, the belt assist device 30 can move at least a part of the seat belt 10 to a position where the seated person can easily reach before the seated person of the vehicle seat S wears the seat belt 10. In addition, it is possible to notify the seated person that the seat belt 10 has been moved by the light emission of the light emitting device 40.
Then, after the seated person wears the seat belt 10, the seat belt 10 is housed integrally in the vehicle seat S and the light emitting device 40 is turned off so that it does not get in the way.

In the above processing flow, it is necessary to determine both the seating sensor 43 and the door sensor 44 in steps ST1 and ST2. However, the present invention is not limited to this, and one of the determinations may be omitted.
Even when a predetermined time has elapsed in step ST5, the process proceeds to step ST6, where the motor 31 starts the ascending operation and the movable member 34 starts to move from the protruding position to the storage position. It goes without saying that the process does not proceed to step ST6 until the buckle sensor 45 is turned on.

<Second Embodiment of Belt Assist Device>
Next, a second embodiment of the belt assist device will be described with reference to FIGS.
In addition, the description which overlaps with the belt assist apparatus 30 mentioned above is abbreviate | omitted.
The belt assist device 130 according to the second embodiment is attached to an upper portion of the back side portion 120.

The belt assist device 130 includes a support 132 that is fixed to a substantially inverted T-shaped opening 121a provided on the side base 120a by tapping, a rotating shaft 133 that is pivotally supported inside the support 132, a rotating shaft 133, and a rotating shaft 133. The movable member 134 is attached mainly via a moving shaft 133.
In addition, a plate-shaped light guide 142 (light emitting device 140), a plate-shaped covering the movable member 134 and the light guide 142 are formed on the rear surface of the movable member 134 on the side of the seated person in the left-right direction. A cover member 143 is attached.
Note that a drive motor (not shown) for driving the movable member 134 is attached to the movable member 134.

  The belt assist device 130 is configured between a storage position where the movable member 134 is stored in the storage part 121 of the back side part 120 and a protrusion position where the movable member 134 protrudes forward from the back side part 120 and pushes out a part of the seat belt 10. It is a device that rotates.

The support body 132 is a resin body that rotatably supports the movable member 134, and a pair of support holes 132 c for supporting the rotation shaft 133 is formed in the left and right side wall portions.
In addition, a plurality of substantially cylindrical connecting portions 132d that connect the left and right side wall portions are provided in the upper portion of the support 132.
The rotation shaft 133 extends in the left-right direction, and is further supported by the shaft hole 134c of the movable member 134 in a state of being supported by the pair of support holes 132c.
The rotating shaft 133 is attached to the lower part (lower end) of the support 132 and the movable member 134.

As shown in FIG. 8, the movable member 134 is made of a resin plate and is a member for pushing out a part of the seat belt 10 from the rear, and is provided to be rotatable between a storage position and a protruding position. .
On the rear surface of the movable member 134, a reinforcing rib 134a shown in FIG.
A pair of shaft holes 134c extending in the left-right direction are integrally attached to the left and right ends at the lower portion of the rear surface of the movable member 34.
A rotation shaft 133 is inserted through the pair of shaft holes 134c in the left-right direction.

  In the above configuration, the movable member 134 is arranged so as to move to the protruding position of FIG. 7 by rotating downward from the storage position so as to protrude forward of the seat around the rotation shaft 133.

In the above configuration, the reinforcing rib 134 a is disposed so as to contact the connecting portion 132 d of the support body 132 when the movable member 134 moves to the protruding position.
Therefore, the movable member 134 can be positioned at the protruding position, and the movable member 134 is stably supported by the support body 132.

The light emitting device 140 is a device for notifying that the movable member 134 is in the protruding position by light emission. As shown in FIG. 9, the light emitting device 141 that emits light and the light emitted from the light source 141 are guided. The light guide 142 is mainly composed of light.
The light guide 142 is a light guide plate made of polycarbonate resin, which introduces light from the light receiving surface on the light source body 141 side, reflects the introduced light as appropriate, and faces the front and the side on the seated person side. It is configured to guide light.

In the above configuration, the movable member 134, the light guide body 142, and the cover member 143 have a color tone or a color pattern in which there are alternating brightness differences between these members.
Specifically, the movable member 134 and the cover member 143 are formed to have a cold resin color such as white or blue, and the light guide 142 is a warm resin color such as amber or red. It is formed to become.
Therefore, for example, the seated person can more easily recognize the presence of the movable member 134 by a warm color during daytime and by light emission at night.

<Third Embodiment of Belt Assist Device>
Next, a third embodiment of the belt assist device will be described with reference to FIGS.
The belt assist device 230 according to the third embodiment is attached to an upper portion of the back side portion 220.
As shown in FIG. 10, the belt assist device 230 mainly includes a rotation shaft 233 that is pivotally supported inside the side base 220 a and a movable member 234 that is attached via the rotation shaft 233.
Further, a flat light guide 242 (light emitting device 240) is provided on the rear surface (bottom surface) of the movable member 234 having a substantially flat plate shape, and a light emitter 246 (light emitting device 245) is provided on the rear surface (bottom surface) of the light guide 242. And are attached.

The light emitting device 240 is a device that notifies the light emission that the movable member 234 is in the protruding position, and is mainly composed of a light source body (not shown) and a light guide body 242 that guides light emitted from the light source body. It is configured.
The light emitting device 245 is a device that emits light toward a seated person when the movable member 234 is in the protruding position. As shown in FIG. 11, the light emitting device 245 includes an LED light source unit 246 and a light emitting body 246. An assembly member 247 for assembling is mainly configured.

  The light emitter 246 includes a light source 246a, a substrate 246b for fixing the light source 246a, a dome-shaped lens 246c for converging or diverging light emitted from the light source 246a, and a light distribution angle for adjusting the light distribution angle of the lens 246c. It is mainly composed of a knob 246d.

In the above configuration, the rotation shaft 233 is attached to the upper end portion of the movable member 234, and the light emitting device 245 is attached to the lower end portion of the movable member 234.
Therefore, it has a compact and simple configuration, and it is easy to secure the light emission range of the light emitting device 245.

In the above configuration, the light emitting device 245 is a device that emits light toward the seated person, and includes a knob 246d for adjusting the light distribution angle of the light emitter 246.
Therefore, the light emitter 246 can illuminate an arbitrary place toward the seated person, and in addition to the function of notifying the seated person of the presence of the movable member 234, it can also be a reading light, for example.
In addition, when using as a reading light, it is desirable to make the luminescent color of the light-emitting body 246 white or a light bulb color.

<Fourth Embodiment of Belt Assist Device>
Next, a fourth embodiment of the belt assist device will be described with reference to FIGS.
The belt assist device 330 according to the fourth embodiment is attached to an upper portion of the back side portion 320.
As shown in FIG. 12, the belt assist device 330 mainly includes a rotation shaft 333 that is pivotally supported inside the side base 320 a and a movable member 334 that is attached via the rotation shaft 333.
Further, on the rear surface (upper surface) of the movable member 334 having a substantially flat plate shape, a flat light guide 342 (light emitting device 340) and a cover member 343 having a substantially concave shape on the rear surface (upper surface) of the light guide 342 are provided. A light emitter 346 (light emitting device 345) is attached to the side surface of the cover member 343 on the seated person side.

The light emitting device 340 is a device that informs by light emission that the movable member 334 is in the protruding position, and mainly includes a light source body (not shown) and a light guide body 342.
The light emitting device 345 is a device that emits light toward a seated person when the movable member 334 is in the protruding position, and as shown in FIG. An assembly member 347 for assembling is mainly configured.

In the above configuration, the light-emitting device 345 is a device that emits light toward the seated person, and is attached to the side surface of the cover member 343 on the seated person side.
In addition, the light emitting device 345 includes a knob 346d for adjusting the light distribution angle of the light emitter 346.
Therefore, the light emitter 346 can more easily illuminate an arbitrary place toward the seated person, and can be effectively used as, for example, a reading light in addition to the function of notifying the presence of the movable member 334.

<Fifth Embodiment of Belt Assist Device>
Next, a fifth embodiment of the belt assist device will be described with reference to FIG.
The belt assist device 430 according to the fifth embodiment is attached to the upper end portion of the back side portion 420 and is disposed in front of the belt guide 413.
The belt assist device 430 moves up and down between a storage position where the movable member 434 is stored in the back side portion 420 and a protruding position where the movable member 434 protrudes upward from the back side portion 420 and pushes a part of the seat belt 10 upward. It is a device to be operated.

The movable member 434 mainly includes a flat plate-shaped belt support 434a that supports a part of the seat belt 10 and a pair of slide legs 434b that support the belt support 434a from below.
A light guide 442 (light emitting device 440) having a flat plate shape is attached to an end of the belt support 434a on the seat occupant side in the left-right direction.
The light emitting device 440 is a device that notifies by light emission that the movable member 434 is in the protruding position, and mainly includes a light source body (not shown) and a light guide body 442.

<Other embodiments>
In the above embodiment, as shown in FIGS. 3 and 4, the belt assist device 30 is configured to rotate the movable member 34 by the lifting and lowering operation of the motor 31, but is not limited to a stroke motor. Alternatively, the movable member 34 may be rotated using a drive operation such as another known drive motor, actuator, or spring.

Moreover, in the said embodiment, as shown to FIG. 1, FIG. 2, although the movable member 34 is attached to the upper part in the back side part 20 of the seat back 2, it is not limited to this, The center of an up-down direction Of course, it may be attached to the part or the lower part.
For example, the movable member 34 may be disposed below the lower end of the headrest 3 and disposed below the upper end of the seat back 2.

Moreover, in the said embodiment, although the movable member 34 is formed as a resin member, it is changeable without being limited to this, For example, you may form as a metal member.
However, if the movable member 34 is made of resin, the reinforcing rib 34a, the side wall flange portion, and the like can be integrally formed, and the rigidity can be improved relatively easily.

In the above embodiment, a rubber-like member such as an elastomer material may be separately attached to the upper end portion and the lower end portion of the movable member 34.
If it does in this way, it will become easy to position at the time of opening and closing of movable member 34, and it can control a hitting sound.

In the above-described embodiment, a pair of protrusions (not shown) that protrude forward are formed at the left and right ends of the front surface of the movable member 34, and function as a position restricting portion in the left-right direction of the seat belt 10. However, it is possible to change without being limited to this.
For example, a concave portion that is recessed rearward in the central portion in the left-right direction may be formed on the front surface of the movable member 34 as the position restricting portion.

  Moreover, in the said embodiment, as shown in FIG. 3, although the light-emitting device 40 is attached to the movable member 34 of the belt assist apparatus 30, it is not limited to this, The seat back 2 around the belt assist apparatus 30 is shown. It may be mounted on the top, may be mounted inside the seat back 2, or may be mounted on the vehicle body.

Moreover, in the said embodiment, although the light guide 42 of the light-emitting device 40 is controlled to light-emit continuously while the movable member 34 exists in a protrusion position as an alerting | reporting means, the light guide 42 blinks at this time. However, it may be controlled to emit light.
In this way, the position of the movable member 34 can be notified to the seated person more easily by the flashing light emission of the light guide 42.

Further, in the above embodiment, the light guide 42 is a light guide plate designed to emit light by injection molding polycarbonate resin and providing fine wrinkles or reflecting prisms, but the light guide 42 can be changed without being limited thereto. is there.
For example, it may be a light guide plate formed from an acrylic resin, or may be a soft side-emitting fiber or the like.
Similarly, the light source body 41 is not limited to an LED light source, and may be, for example, an organic EL light source or a light bulb.
In this way, it is possible to select a light guide body and a light source body having a brightness, a light emission area, and a light emission color that are optimal for the shape structure of the belt assist device 30.

  In the above-described embodiment, a vehicle seat used for an automobile has been described as a specific example. can do.

In the above embodiment, the vehicle seat according to the present invention has been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.
In particular, the shape, arrangement, and configuration of the belt assist devices 30, 130, and 230 described in the above embodiment are merely examples, and do not limit the present invention.

S vehicle seat 1 seat cushion 2 seat back 3 headrest 10 seat belt 10a lower end side 10b upper end side 11 tongue plate 12 buckle 13, 413 belt guide 13a guide holes 20, 120, 220, 320, 420 back side portions 20a, 120a, 220a, 320a Side base 21, 121, 221, 321 Storage recess (storage)
21a, 22a, 23a, 121a Opening portion 21b, 22b, 23b Storage plate 22 Airbag storage recess 23 Belt facing recess 30, 130, 230, 330, 430 (Seat) Belt assist device 31 Motor 31a Motor body 31b Cylinder 31c Support shaft 32,132 Support plate (support)
32a Mounted part 32b Opening 32c, 132c Support hole 132d Connecting part 33, 133, 233, 333 Rotating shaft 34, 134, 234, 334, 434 Movable member 34a, 134a Reinforcement rib 34b Support hole 34c, 34d, 134c Shaft hole 34e Support rib 34f Slit 434a Belt support 434b Slide leg 35 Auxiliary spring 40, 140, 240, 340, 440 Light emitting device 41, 141 Light source body 42, 142, 242, 342, 442 Light guide 42a Exposed portion 143, 343 Cover Members 245 and 345 Light-emitting devices 246 and 346 Light emitter 246a Light source 246b Substrate 246c Lens 246d and 346d Knob 247 and 347 Assembly member 50 ECU
51 Drive Circuit 52 Car Body Power Supply 53 Seating Sensor 54 Door Sensor 55 Buckle Sensor 56 Drive Circuit 60 Airbag Module

Claims (14)

It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position ,
The movable member is storably attached to a storage portion provided in the seat back,
The notification means, a seat belt assist device according to claim Rukoto disposed within the space of the housing part in the storage position. It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position,
The seat back is provided with an airbag module,
The seat belt assist device according to claim 1, wherein the notification means is disposed above the airbag module. It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position,
The notification means includes
A light emitting device attached around the movable member or the movable member;
Causing the light emitting device to emit light when the movable member is in the protruding position;
The light-emitting device is attached to a back surface of the movable member on the seat back side when the movable member is in the storage position. It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position,
The notification means includes
A light emitting device attached around the movable member or the movable member;
Causing the light emitting device to emit light when the movable member is in the protruding position;
The movable member is storably attached to a storage portion provided in the seat back,
The light-emitting device is disposed at a position ahead of the storage portion when the movable member is at the protruding position. It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position,
The notification means includes
A light emitting device attached around the movable member or the movable member;
Causing the light emitting device to emit light when the movable member is in the protruding position;
The light emitting device includes a light source that emits light, and a light guide that guides the light emitted from the light source.
The light guide and a cover member that covers the movable member and the light guide are attached to at least one of the front and back surfaces of the movable member,
At least the movable member and the light guide have a color tone or a color pattern having a difference in brightness between the movable member and the light guide. It is attached to the seat back that is the backrest of the vehicle seat,
A seat belt assist device capable of moving at least a part of a seat belt placed on the seat back to a position that can be easily reached from a seated person,
A movable member attached to the seat back and moved between a storage position stored in the seat back and a protruding position protruding from the seat back and pushing out a part of the seat belt;
An informing means for informing that the movable member is in the protruding position,
The notification means includes
A light emitting device attached around the movable member or the movable member;
Causing the light emitting device to emit light when the movable member is in the protruding position;
The light-emitting device includes a light-emitting body that emits light toward the seated person, and an angle adjustment unit that adjusts a light distribution angle of the light-emitting body. The seat belt assist device according to claim 2, wherein the notification unit is disposed at a position overlapping with the airbag module in a lateral width direction. The notification means includes
A light emitting device attached around the movable member or the movable member;
The seatbelt assist device according to claim 1 or 2, wherein the light emitting device emits light when the movable member is in the protruding position. The light emitting device is attached to the movable member,
The seat belt assist device according to any one of claims 3 to 6, wherein the informing means continuously causes the light emitting device to emit light while the movable member is in the protruding position. The movable member is
It is attached to the lateral part of the left and right direction of the seat back,
Projecting a portion of the seat belt placed on the side portion from the rear when in the projecting position;
The light emitting device of the movable member, the seat belt assist device according to claim 8 or 9, characterized in that attached to the side surface of the seating side in the horizontal direction. The light emitting device includes a seatbelt assist device according to any one of claims 8 to 10, characterized in that attached to the protruding end side of the movable member. The movable member is attached to the seat back via a rotation shaft,
The pivot shaft is attached to the upper end of the movable member,
The light emitting device includes a seatbelt assist device according to any one of claims 8 to 11, characterized in that attached to the lower end portion of the movable member. The light emitting device is attached so as to be housed in the housing portion together with the movable member,
The seat belt assist device according to claim 4 , wherein the notification unit starts the light emission of the light emitting device when the movable member moves from the storage position.   A vehicle seat comprising the seat back and the seat belt assist device according to any one of claims 1 to 13.