JPH045402Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to improvement of a seat belt device for an automobile.

(Prior art) Conventionally, for seats that can be moved in the front and back direction,
A seatbelt device has been proposed in which a buckle that removably locks the free end of the seatbelt is moved to the seat position, and the hook member is engaged with an engagement groove on the vehicle body to lock the buckle (Tokuko Showa). 55−
However, there was a problem in that moving and locking the buckle was troublesome.

(Purpose of the invention) An object of the invention is to provide a seat belt device in which the buckle can be easily moved and locked by simply tilting, moving, and standing up the buckle.

(Structure of the invention) Therefore, in the present invention, a guide member is attached to the vehicle body side along a seat that is freely movable in the front and rear direction, a guide groove in the front and rear direction is provided in the guide member, and a predetermined interval is set in the guide groove. A locking recess on the upper edge and an engaging recess on the lower edge are formed at different positions in the direction of the guide groove, and on the other hand, a buckle for removably locking the free end of the seat belt is formed. An elliptical engaging member is provided at the lower end, a short diameter portion of the engaging member is slidably fitted into a guide groove of the guide member, and a top portion of one of the long diameter portions of the engaging member is provided with an oval engaging member.
When the buckle is erected with the long diameter part of the engagement member inclined at a predetermined angle with respect to the direction of the guide groove, a substantially triangular lock claw part that is engaged with the engagement recess is integrally projected. The lock pawl portion is configured to engage with the engagement recess when the lock claw portion is engaged with the engagement recess.

(Effect of the invention) According to the invention, when the buckle is tilted,
Since the short diameter portion of the engaging member fits into the guide groove of the guide member, the buckle can be quickly moved to the seat position, and when the buckle is raised at an appropriate moving position, the lock claw portion of the engaging member At the same time as the buckle engages with the locking recess of the guide groove, the other top of the long diameter portion engages with the engaging recess, so that the buckle can be reliably locked at the moving position.

Furthermore, since the other top of the longer diameter portion of the engagement member is engaged with the engagement recess of the guide groove, there is no risk of the lock pawl portion coming off from the engagement groove of the guide groove due to vibrations of the vehicle body or the like.

Furthermore, since the buckle is locked with the locking claw portion of the engaging member engaged with the locking recess provided at the upper edge of the guide groove, when a large external tensile force is applied diagonally forward and upward to the buckle, Since the locking pawl receives force in the locking direction, that is, in the direction of stronger engagement, the lock will not be released unless the locking pawl is destroyed, and the inherent safety of the seatbelt cannot be ensured. can.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the automobile seat 1 is composed of a seat cushion 2 and a seat back 3, and an upper rail 4 provided on the lower surface of the seat cushion 2 is connected to a lower rail provided on the vehicle body floor. 5, and the seat cushion 2 is supported so as to be movable in the front-rear direction.

A bracket 6 rising upward along the side surface of the seat cushion 2 is fixed to the vehicle floor,
A guide member 7 is fixed to the rising portion 6a of the bracket 6.

The guide member 7 is provided with a guide groove 8 in the front-rear direction.

As shown in FIG. 3, a V-shaped locking recess 9 is formed at the upper edge of the guide groove 8, and an arc-shaped engagement recess 10 is formed at the lower edge.

The locking recess 9 and the engagement recess 10 are one upper and lower set, and a plurality of sets are formed at predetermined intervals in the front-rear direction of the guide groove 8.

On the other hand, a buckle 13 is provided which removably locks the lock fitting at the free end of the seat belt 12, and an elliptical engagement member 14 as shown in FIG. 4 is fixed to the lower part of the buckle 13. ing.

As shown in FIG. 5, the engagement member 14 has a short diameter portion 14a set to a diameter such that it is slidably fitted into the guide groove 8 of the guide member 7.

A support shaft 15 fixed to the buckle 13 is inserted into the center hole 14b of the engaging member 14, and the support shaft 15 is inserted through an elongated hole 16 provided in the guide member 7 so that the support shaft 15 is inserted into the center hole 14b of the engagement member 14. Long hole 1 provided in
7 is fixed to a support plate 18 that is slidably fitted to the support plate 7.

Therefore, the buckle 13 is attached to the guide member 7 by the support shaft 15 and the support plate 18, and can be moved back and forth along the guide groove 8 of the guide member 7 by the engagement member 14.

As shown in FIG. 5a, one top portion 14d of the long diameter portion 14c (see FIG. 4) of the engaging member 14 has a locking recess for the guide groove 8 when the engaging member 14 rotates in the upright direction. Lock claw portion 14e that engages with 9
is provided, and the other top portion 14f is connected to the engagement member 14.
When rotated in the upright direction, the guide groove 8 is engaged with the engagement recess 10 of the guide groove 8.

If the configuration is as above, now Batsukuru 13
When tilting the engagement member 14 in the forward direction A, the short diameter portion 14a of the engagement member 14 touches the guide member 7
Since the buckle 13 is fitted into the guide groove 8 of the guide groove 8, the buckle 13 can be quickly and smoothly moved along the guide groove 8 to the sheet moving position.

Then, when the buckle 13 is raised in the rear direction B, the locking claw portion 14e of the engaging member 14 engages with the locking recess 9 of the guide groove 8, and at the same time, the top of the long diameter portion 14e 14f comes to engage with the engagement recess 10 of the guide groove 8.

When the buckle 13 is held in the upright position by the tension of the seat belt 12, the engagement member 14
Since the lock claw portion 14e is engaged and held in the locking recess 9 of the guide groove 8, the lock is reliably locked.

Furthermore, even if the buckle 13 vibrates due to vehicle body vibration, the top portion 14f of the engagement member 14 is engaged and held in the engagement recess 10 of the guide groove 8, so there is a risk that the engagement member 14 may slide in the front-rear direction. There is no possibility that the lock claw portion 14e will come off from the locking recess 9 of the guide groove 8.

[Brief explanation of the drawing]

Fig. 1 is a side view of an automobile seat equipped with a seat belt device according to the present invention, Fig. 2 is a sectional front view of the main part of Fig. 1, Fig. 3 is a perspective view of the seat belt device, and Fig. 4 is a side view of an automobile seat equipped with a seat belt device according to the present invention. A perspective view of the engaging member, FIG. 5a is a front view showing the relationship between the engaging member and the guide groove during the standing operation, and FIG. 5b shows the relationship between the engaging member and the guide groove during the tilting operation. It is a front view. 1... Automobile seat, 4... Atsupararu,
5... Lower rail, 7... Guide member, 8... Guide groove, 9... Locking recess, 10... Engaging recess, 1
3...buckle, 14...engaging member, 14a...
Short diameter part, 14c... Long diameter part, 14d, 14f...
Top part, 14e...Lock claw part.

Claims (1)

[Scope of utility model registration request] A guide member is attached to the vehicle body along a seat that is freely movable in the front and back direction, and a guide groove in the front and rear direction is provided in the guide member, and a locking recess is provided on the upper edge of the guide groove at a predetermined interval, and a locking recess is provided on the lower edge of the guide member at a predetermined interval. Engagement recesses are formed at different positions in the direction of the guide groove, and an elliptical engagement member is provided at the lower end of the buckle that removably locks the free end of the seat belt. The short diameter portion of the engagement member is slidably fitted into the guide groove of the guide member, and the long diameter portion of the engagement member is fitted into the guide groove at the top of one of the long diameter portions of the engagement member. A substantially triangular locking claw portion is integrally provided that projects in the locking recess when the buckle is erected at a predetermined angle with respect to the direction, and the other top portion is attached to the locking claw portion. A seat belt device for an automobile, characterized in that the seat belt device is adapted to engage with the engagement recess when the seat belt is engaged with the engagement recess.