JPH06107122A - Seat belt guide device - Google Patents

Abstract

PURPOSE:To prevent interference (contact) of a headrest and a shoulder anchor sash guide, to prevent twisting of a seat belt and to favorably maintain an entrainment property of the seat belt. CONSTITUTION:By forming a stopper part 11b by way of extensively providing a bracket 11 for seat belt guide installation and arranging this stopper part 11b inside of a headrest 4, in the case when the headrest 4 is inclined or slided backward, the headrest 4 is avoided from making contact with a shoulder anchor sash guide 9 by stopper work between the stopper part 11b and a car body part (for example, a projection part 6c of a tower trim 6).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt guide device used in vehicles such as automobiles, and more specifically,
A seatbelt guide is attached to a side portion of the headrest via a seatbelt guide attachment bracket provided in a headrest of a vehicle seat, and a shoulder anchor sash guide is attached to a vehicle body component provided behind the headrest. The present invention relates to a seat belt guide device configured to guide an intermediate portion of a seat belt by the seat belt guide and the shoulder anchor sash guide.

[0002]

2. Description of the Related Art FIGS. 8 to 11 show a conventional seat belt guide device of this type. This device is applied to a so-called convertible type vehicle capable of full open running with a roof removed. Has been adopted. Since there is no back pillar in the convertible type vehicle, the shoulder anchor sash guide 3 that slidably guides the intermediate portion 30a of the seat belt (seat belt webbing) 30 as shown in FIGS. 8 and 10.
1 is attached to a rear portion of a headrest 33 of a vehicle seat (front seat) 32.

That is, a strut tower (not shown) for mounting suspension struts is arranged at the rear portion of the front seat 32, and a tower trim 34 is mounted on the strut tower for improving appearance. There is. Then, the shoulder anchor sash guide 3 is provided in the recess 35 provided at the side end of the tower trim 34.
One shoulder anchor portion 31a is arranged and mounted on the strut tower so as to be rotatable in a horizontal plane about a support shaft 36 made of a bolt or the like. Then, the intermediate portion 30a of the seat belt 30 is slidably inserted and guided by the ring portion 31b of the shoulder anchor sash guide 31, and the shoulder anchor sash guide 31 is pulled as the seat belt 30 is pulled for wearing. The support shaft 36 is rotated around the support shaft 36 so as to be oriented according to the pulling direction.

Further, as shown in FIG. 9, the headrest 3
A seat belt guide 37 is attached to the side surface 33a of the sheet 3 via a seat belt guide attachment bracket 38 in order to facilitate handling of the seat belt 30.
Specifically, the bracket 38 has upper and lower end portions 38a,
A member having a U-shaped cross section formed by bending 38b in the same direction at a substantially right angle is used.
(See FIG. 9 and FIG. 11).
The seat belt guide 37 is fastened and fixed to the bracket 38 with screws 40a and 40b, whereby the seat belt guide 37 is attached to the headrest 33.

However, the intermediate portion 30a of the seat belt 30 is slid over the seat belt guide 37 and the shoulder anchor sash guide 31 so as to be slidably guided. Although not shown, one end of the seat belt 30 is fixed to the vehicle body, and the other end is connected to the winding device. Thus, the fastening metal fitting 41 assembled to the seat belt 30 is attached in the direction of arrow A in FIGS. 8 and 10 (the seat back 32 of the vehicle seat 32).
The seat belt 30 is attached to an occupant by pulling the seat belt 30 in a diagonal direction (a) and engaging with a buckle (not shown).

[0006]

However, in the case of a convertible type vehicle equipped with such a seat belt guide device, the size of the passenger compartment tends to be limited to a relatively small size. When the layout of the vehicle seat 32 and the seat belt 30 is determined under the condition that the size of the vehicle is limited, a sufficient lateral gap (vehicle width direction) between the vehicle seat 32 and the shoulder anchor sash guide 31 is secured. The reality is that you cannot do it. In such a case, if the vehicle seat 32 is tilted backward by the reclining mechanism or is slid backward by the sliding mechanism, as shown in FIGS. 10 and 11, the rear portion of the headrest 33 and the ring portion 31b of the shoulder anchor sash guide 31 are shown. And can interfere with each other.

That is, when the front seat 32 is tilted or slid rearward, the rear portion of the headrest 33 protrudes toward the side of the shoulder anchor sash guide 31 (projects toward the vehicle seat 32 side). First, the headrest 33 does not come into contact with the shoulder anchor sash guide 31 at this point. But headrest 3
When 3 is further urged rearward, the elastic material (urethane foam or the like) built in the headrest 33 partially dents, and the tip portion of the protrusion 34a bites into that portion, so that the headrest 33 The rear part may reach the ring part 31b of the shoulder anchor sash guide 31 and come into contact therewith.

In such a situation, the ring portion 3
1b is forcibly rotated, and accordingly, the seat belt 3
As shown in FIG. 11, the intermediate portion 30a of 0 is twisted by the ring portion 31b, and the twisted portion 42 is held in the state. Therefore, there is a possibility that a problem may occur in which the winding property of the seat belt 30 (the winding property of the webbing) when the seat belt is unfastened is impaired.

Therefore, in order to solve such a problem, it is conceivable to adopt a countermeasure such that another member such as a stopper rubber is attached to the rear portion of the headrest 33 which comes into contact with the protruding portion 34a of the tower trim 34. However, in this case, a bracket for attaching a separate member such as a stopper rubber is required, resulting in high cost, and
It is practically difficult to adopt the above-mentioned measures, because another problem such as deterioration of the external appearance occurs due to the presence of the stopper rubber or the like.

The present invention has been made in view of such an actual situation, and an object thereof is to prevent interference between a headrest and a shoulder anchor sash guide and prevent twisting of a seat belt. An object of the present invention is to provide a seat belt guide device having a structure capable of maintaining a good retractability of the seat belt.

[0011]

In order to achieve the above-mentioned object, in the present invention, a seat belt guide is mounted on a side portion of the headrest through a seatbelt guide mounting bracket arranged in a headrest of a vehicle seat. In the seat belt guide device, the shoulder anchor sash guide is attached to the vehicle body component disposed behind the headrest, and the intermediate portion of the seat belt is guided by the seat belt guide and the shoulder anchor sash guide. A part of the seatbelt guide mounting bracket is extended to form a stopper part and the stopper part is arranged in the headrest, and when the headrest is tilted or slid backward, By the stopper action between the body parts, Serial headrest is configured to prevent the contact with the shoulder anchor sash guide.

[0012]

[Function] When the headrest is tilted or slid rearward, the stopper portion extending to the seatbelt guide mounting bracket corresponds to the vehicle body component behind the headrest, so that the headrest contact with the shoulder anchor sash guide is prevented. Be blocked. Therefore, it is possible to prevent the twisting of the seat belt caused by the contact of the headrest with the shoulder anchor sash guide. As a result, when the seat belt is unfastened, the seat belt can be smoothly wound up by the winding device without affecting the winding performance.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to.

FIG. 1 shows a seat belt guide device 1 according to the present invention. The device 1 is installed in a convertible type vehicle and is arranged on a side portion of a vehicle seat (front seat) 2.

As shown in FIG. 1, a vehicle seat 2 comprises a seat cushion 3 and a seat back 5 having a headrest 4 on the upper portion thereof. The seat back 5 is rearward with respect to the seat cushion 3 by a reclining device (not shown). It is configured to be tilted to. The vehicle seat 2 is configured to slide in the front-rear direction of the vehicle body by a slide device (not shown).

Further, a strut tower (not shown) for mounting suspension struts is arranged at the rear portion of the vehicle seat 2, and the strut tower is covered with a tower trim 6 for improving appearance. ing. The tower trim 6 is formed by bending a plate material into a predetermined shape, and has recesses 6a on both left and right sides and a recess 6b in the center. A shoulder anchor sash guide 9 including a shoulder anchor portion 7 and a ring portion 8 attached to the front end of the shoulder anchor portion 7 is arranged in the recess 6a, and the shoulder anchor portion 7 is attached to the strut tower by bolts or the like. It is attached so as to be rotatable around the supporting shaft 10.

Further, as clearly shown in FIG. 2, a seat belt guide 12 is attached to the side portion 4a of the headrest 4 via a seat belt guide attaching bracket 11. The seat belt guide 12 includes a mounting plate portion 12a having a pair of screw insertion holes 13, and the mounting plate portion 12
The belt guide portion 12b connected to the lower end of a and the folding portion 12 folded back from the tip of the belt guide portion 12b.
It is composed of c and. On the other hand, the seatbelt guide mounting bracket 11 has a plate-shaped bracket body 11a having a pair of screw insertion holes 14 and right and left bent portions 15 at the upper and lower ends, as shown in FIGS. , And a stopper portion 11b extending on the back surface side of the bracket body 11a. Then, as shown in FIG. 6, the screw insertion hole 1 is formed on the rear surface of the bracket body 11a.
The welding nut 50 is connected to the position corresponding to 4,
A fitting recess 15 a is formed at the edge of the right-angled bent portion 15.

As shown in FIGS. 3 and 6, the seat belt guide mounting bracket 11 of this embodiment is an integrally molded product formed by bending a plate material, and its stopper portion 11b.
Is composed of a substantially rectangular plate-shaped portion 16 bent at the rear end 11c of the bracket body 11a. The plate-shaped portion 16 includes an inclined portion 16a inclined rearward from the rear end 11c of the bracket body 11a, and the inclined portion 16a.
And a flat receiving plate portion 16b that is bent and extended from the plate-like portion 16 around the plate-shaped portion 16 for ensuring strength and preventing damage to the headrest skin. Is provided. Then, the fitting recess 15a of the bracket main body 11a is fitted and welded to the side frame 18 of the headrest 4 as shown in FIG. 6, whereby the seat belt guide mounting bracket 11 is fixed to the side frame 18. It is supposed to be done.

The arrangement of the bracket 11 with respect to the headrest 4 will be described in detail below. That is, the entire bracket 11 fixed to the side frame 18 is arranged inside the skin 19 of the headrest 4 as shown in FIGS.
The stopper portion 11b of No. 1 projects from the bracket mounting portion of the side frame 18 toward the central portion of the headrest 4 as shown in FIG. 4, and is located behind the side frame 18 as shown in FIGS. 5 and 6. Therefore, it is arranged near the rear surface of the skin 19 of the headrest 4.

On the other hand, the flat receiving plate portion 16b of the stopper portion 11b is arranged along the width direction of the headrest 4 (vehicle width direction), and when the headrest 4 is tilted or slid rearward, it is already described. The tower trim 6 is provided at a position corresponding to the protruding portion 6c. In addition, an elastic material 2 such as urethane foam is provided in the outer skin 19 of the headrest 4.
0 is internally provided, and an elastic material 20 having a slight thickness is interposed between the outer skin 19 on the rear portion 4b side of the headrest 4 and the stopper portion 11b.

Further, the mounting plate portion 12a of the seat belt guide 12 is applied to the bracket body 11a, and the screw S is screwed into the welding nut 50 through the screw insertion holes 13 and 14, so that the seat belt guide 12 is It is screwed to the bracket 11. As a result, the seat belt guide 12 is attached to the side frame 18 of the headrest 4 via the bracket 11,
It is fixedly arranged on the side portion 4a.

A shoulder anchor sash guide 9 is provided behind the seat belt guide 12 attached to the side portion 4a of the headrest 4, and the shoulder anchor sash guide 9 is provided behind the headrest 4. A projecting portion 6c of the tower trim 6 that projects toward the headrest 4 is provided in the vicinity of the side portion of the.

The intermediate portion 21a of the seat belt 21
As shown in FIG. 1, each of them is hung over the ring portion 8 of the shoulder anchor sash guide 9 and the belt guide portion 12b of the seat belt guide 12, and is slidably guided by these portions. Also, seat belt 2
One end of 1 is fixed to the vehicle body, and the other end is connected to a winding device (not shown). In addition, the seat belt 21
An engaging metal fitting 22 is attached to a buckle (not shown) attached to the vehicle body.

Thus, the seatbelt guide device 1 is constituted by the shoulder anchor sash guide 9 and the seatbelt guide 12, etc., and the fastening metal fitting 22 is pulled around in the direction of arrow A in FIG. 1 and fastened to the buckle (not shown). In response to this, the seat belt 21 is pulled out from the winding device (not shown) and worn on the occupant.

Next, the function of the seat belt guide device 1 having the above-described structure will be described. First, when an occupant sits on the vehicle seat 2 and pulls the engaging metal fitting 22 in the direction of arrow A in FIG. 1, the intermediate portion 21a of the seat belt 21 has a ring portion 8 of the shoulder anchor sash guide 9 and a belt of the seat belt guide 12. It is pulled out from the winding device (not shown) while being guided by the guide portions 12b. Then, the seat belt 21 is attached to the occupant by engaging the engaging metal fitting 22 with a buckle (not shown).

When the seat back 5 is tilted rearward or the vehicle seat 2 is slid rearward under such a state, and the rear surface of the headrest 4 hits the protrusion 6c of the tower trim 6, As shown in FIG. 7, the elastic member 20 (see FIG. 6) installed inside the slight gap between the rear portion 4b of the headrest 4 and the stopper portion 11b of the bracket 11.
Is partially dented, and the tip end of the protrusion 6c bites into the rear portion of the headrest 4. However, the protrusion 6c
When does not go into the elastic material 20 too deeply,
The protrusion 6c contacts the stopper portion 11b of the bracket 11 via the outer skin 19 of the headrest 4 and the elastic material 20, so that the stopper portion 11b prevents further protrusion of the protrusion 6c into the headrest 4. . For this reason, the headrest 4 does not come into contact with the shoulder anchor sash guide 9 arranged near the side portion of the protrusion 6c, and therefore the shoulder anchor sash guide 9 is forcibly contacted by the contact of the headrest 4. The seat belt 21 is prevented from being twisted largely and twisted (see FIG. 7). At this time, since the flange 17 is provided around the stopper portion 11b, the outer skin 19 of the headrest 4 that abuts the protrusion 6c.
It is possible to prevent breakage of the part, and this stopper portion 11b
Since the elastic member 20 is disposed in the rear portion, it is possible to prevent the protrusion 6c from being damaged.

As described above, according to the seat belt guide device 1 of this embodiment, the seat belt guide mounting bracket 11 is provided.
The stopper portion 11b extending in the direction can prevent the interference (contact) between the headrest 4 and the shoulder anchor sash guide 9, and thus prevent the seat belt 21 from being twisted and the winding property of the seat belt 21. Can be good. .

Further, the seat belt guide device 1 of this example
Since the existing tower trim 6 and the bracket 11 are used, there is no need to newly add a dedicated part, and therefore, there is an advantage that the number of parts and the cost are not increased.

Further, the bracket 11 has a stopper portion 11
Since the rigidity of the bracket 11 is increased by integrally extending b, it is possible to prevent the bracket 11 and the seat belt guide 12 from being twisted or otherwise defective.

The embodiment of the present invention has been described above.
The present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, the shape of the stopper portion 11b of the bracket 11 can be changed as necessary. Further, the seatbelt guide mounting bracket 11 does not necessarily have to be an integrally molded product, and the bracket body 11a is provided with a stopper portion 11b.
It is also possible to use a bracket formed by integrally connecting the two by welding or the like.

[0031]

As described above, according to the present invention, a part of the seat belt guide mounting bracket is extended to form a stopper portion, and the stopper portion is arranged in the headrest, and the headrest is tilted rearward. Alternatively, when it is slid, the headrest is prevented from coming into contact with the shoulder anchor sash guide by the stopper action between the stopper portion of the seat belt guide mounting bracket and the vehicle body component. Therefore, it is possible to prevent interference (contact) between the headrest and the shoulder anchor sash guide, and prevent the seat belt from being twisted in the shoulder anchor sash guide. Further, according to the seatbelt guide device of the present invention, a simple design change is required only by attaching a stopper portion to the seatbelt guide mounting bracket without using a new exclusive component, resulting in an increase in the number of parts and cost There is an advantage that it does not cause a large increase. Further, since the rigidity of the seatbelt guide mounting bracket is increased due to the extension of the stopper portion, the seatbelt guide mounting bracket and the seatbelt guide mounted on the bracket are not twisted. It can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a seat belt guide device according to the present invention.

FIG. 2 is an exploded perspective view showing a mounting state of a seat belt guide on a side portion of a headrest.

FIG. 3 is a perspective view of a seat belt guide mounting bracket.

FIG. 4 is a front view of a headrest.

FIG. 5 is a side view of the headrest.

6 is an enlarged cross-sectional view taken along the line BB in FIG.

FIG. 7 is a plan view of a main part of the seat belt guide device according to the present invention.

FIG. 8 is a perspective view showing a conventional seat belt guide device.

FIG. 9 is an exploded perspective view showing a state where a seat belt guide is attached to a headrest in a conventional seat belt guide device.

FIG. 10 is a front view of a conventional seat belt guide device.

FIG. 11 is a plan view of a main part of a conventional seat belt guide device.

[Explanation of symbols]

 1 Seat Belt Guide Device 2 Vehicle Seat 4 Headrest 4a Side 6 Tower Trim (Car Body Part) 6c Projection 9 Shoulder Anchor Sash Guide 11 Seatbelt Guide Mounting Bracket 11a Bracket Body 11b Stopper 12 Seatbelt Guide 18 Side Frame 20 Elastic material 21 Seat belt 21a Intermediate part

Claims (1)

[Claims] 1. A seatbelt guide is attached to a side portion of the headrest via a seatbelt guide attachment bracket arranged in a headrest of a vehicle seat, and a shoulder is attached to a vehicle body component provided behind the headrest. In a seat belt guide device in which an anchor sash guide is attached, and the seat belt guide and the shoulder anchor sash guide guide the intermediate portion of the seat belt, a part of the seat belt guide mounting bracket is extended to form a stopper. Forming a portion and disposing the stopper portion in the headrest,
When the headrest is tilted or slid rearward, the headrest is prevented from coming into contact with the shoulder anchor sash guide due to a stopper action between the stopper portion and the vehicle body component. Seat belt guide device.