JPH0584545U - Three-point seat belt mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure that the seatbelt's wearability is always kept good regardless of the seat slide position. [Structure] An electric slide anchor 23 that operates in synchronization with an electric slide seat S is attached to a roof side rail 24, and a support bar is provided between the electric slide anchor 23 and an outdoor side portion of the electric slide seat S. 7, the support bar 7 is supported so as to be able to move in parallel in synchronization with the electric slide seat S, and the shoulder anchor 5 of the three-point seat belt 1 and the retractor 9 are attached to the support bar 7. On the other hand, lower anchor 3 to seat 1
The outer belt of the three-point seat belt 1 is attached to the upper rail 22 of the seat track on the outdoor side, and the outer belt of the three-point seat belt 1 moves in synchronization with the sliding of the seat 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a three-point seat belt mounting structure for an electric slide seat.

[0002]

[Prior Art]

 Conventionally, for example, the three-point seat belt 30 of the driver's seat 40 is composed of an inner belt 31 arranged on the indoor side of the seat 40 and an outer belt 33 arranged on the outer side of the seat 40 as shown in FIG. The inner belt 31 is attached to the inner surface of the seat cushion 41 of the seat 40 as shown in the figure, and the buckle 32 is attached to the tip thereof. The inner belt 31 may be attached to the floor panel.

On the other hand, the outer belt 33 includes a retractor 34 below the center pillar 50, a shoulder anchor 35 above the center pillar 50, and a lower anchor 36 near the retractor 34 and below the center pillar 50. The webbing 37 attached and pulled out from the retractor 34 is connected to the lower anchor 36 via the shoulder anchor 35. The tongue plate 38 is provided on the webbing 37 between the shoulder anchor 35 and the lower anchor 36. It is installed. By locking the tongue plate 38 to the buckle 32 of the inner belt 31, the occupant seated on the seat 40 is restrained from moving forward in an emergency.

[0004]

[Problems to be solved by the device]

 However, as described above, the outer belt 33 in the conventional three-point seat belt 30 is attached to the center pillar 50, that is, the body side. Therefore, for example, when the seat 40 is slid to the foremost position, the outer belt 33 is opposed to each other. When the occupant sits back on the seat 40 and wears the seat belt 30 after retracting to the rear of the seat 40, it is necessary to pull out the tongue plate 38 by pulling the tongue plate 38 forward with his hand. There was a problem that the operability when wearing the belt was extremely poor.

Therefore, an object of the present invention is to provide a three-point seatbelt mounting structure that can always maintain good seatbelt wearability regardless of the seat slide position.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned conventional problems, the present invention provides an electric slide anchor that operates in synchronization with the slide of the electric slide type seat on the roof side rail above the outdoor side of the electric slide type seat. A support bar in a substantially vertical state between the seat and the outer rail of the seat outer track to support the support bar so that the support bar can move in parallel in synchronization with the slide of the seat. At least the shoulder anchor of the belt is attached, and the lower anchor of the three-point seat belt is attached to the support bar or the upper rail so that the outer belt of the three-point seat belt can be moved in synchronization with the slide of the seat. Characterize.

[0007]

[Action]

 According to the above structure, the shoulder anchor of the three-point seat belt is attached to the support bar that moves in parallel with the electric slide seat, and the lower anchor is attached to the support bar or the upper rail of the outer seat track. Therefore, even if the seat slides, the mutual positional relationship does not change.Therefore, the position of the tongue plate mounted on the webbing between the shoulder anchor and the lower anchor with respect to the seat is determined by sliding the seat. Remains the same and is always within easy reach of the seated person.

[0008]

Embodiment Next, an embodiment of the present invention will be described with reference to FIGS. In this example, a three-point seat belt 1 attached to an electric slide seat S as a driver's seat is illustrated and described as an example.

The electric slide type seat S (hereinafter, also simply referred to as “seat”) is configured to be slidable in the front-rear direction of the vehicle by operating the electric motor 25 for sliding and to be position-adjustable to an arbitrary position. Since the sheet S itself is a conventionally known one, it will not be described in detail. A power seat switch as shown in FIG. 3 is attached to the seat S, and the slide electric motor 25 is operated by operating the slide switch of the switch. Further, this power seat switch is provided with a reclining switch, and by operating the switch, the electric motor for reclining is activated, and thereby the seat back can be reclined at an arbitrary angle.

A support bar 7 is provided so as to extend between the outdoor side portion of the seat S and the roof side rail 24 above the side portion.

This support bar 7 is formed by bending the upper and lower ends of a steel pipe having a bending strength of a certain level or more by approximately 90 ° in opposite directions, and the curved tip has an elliptical mounting flange 7a. , 7a are attached. The lower mounting flange 7a is bolted to the rear portion of the upper rail 22 of the outer seat track, while the upper mounting flange 7a is bolted to the slider 14 of the electric slide anchor 23 provided along the roof side rail 24. Thus, the support bar 7 is supported in a state in which the support bar 7 is extended substantially vertically between the outdoor side portion of the seat S and the roof side rail 24. The support bar 7 is attached so as not to obstruct the reclining of the seat back.

The electric slide anchor 23 is for sliding the upper mounting side of the support bar 7 in synchronization with the slide of the seat S, thereby moving the support bar 7 in parallel with the seat S in parallel. The sheet S has a mechanism similar to the slide mechanism of the sheet S.

That is, along the roof side rail 24, the rail 13 is laid in a range corresponding to the sliding range of the seat S, a bracket 13a is provided at the front end of the rail 13, and a worm gear is built in at the rear end. A housing 20 is attached. A screw 15 having the same lead as the screw in the slide mechanism of the seat S is rotatably supported between the output side of the housing 20 and the bracket 13a. As shown in FIG. 2, a resin nut 16 is screwed onto the screw 15, and the slider 14 is attached to the resin nut 16 via a fixing bracket 17. When the screw 15 rotates, the slider 14 is rotated. Is guided by the rail 13 and slides in the front-rear direction.

On the other hand, an electric motor 12 is connected to the input side of the housing 20 via a flexible cable 19 for rotation transmission. The electric motor 12 is attached to the lower part of the center pillar near the floor of the vehicle in order to prevent noise, and the cable 19 extends along the center pillar to the upper part of the pillar, that is, the roof side rail 24. Is connected to the input side of the housing 20.

As shown in FIG. 3, the electric motor 12 is connected in parallel with the electric motor 25 for sliding the seat S, and is synchronized with the electric motor 25, that is, in the same direction, at the same rotation speed. It is designed to rotate with.

As a result, the mounting portion (slider 14 of the electric slide anchor 23) on the upper portion of the support bar 7 slides in synchronization with the slide of the seat S, that is, in the same direction by the same distance, whereby the support bar 7 is moved. While maintaining a substantially vertical state, the sheet S and the sheet S move in parallel.

On the contrary, when the electric motor 12 for sliding is stopped and the seat S is fixed, the seat S is locked immovably, that is, when the electric motor 12 is stopped, that is, the seat S is locked. When the seat S is fixed, the electric slide anchor 23 is locked so that the upper mounting portion of the support bar 7 does not move.

That is, similarly to the fact that the lock function in the slide mechanism of the seat S is set by setting the gear ratios of the screw lead and the worm gear of the housing so that the torque is not returned, the electric slide anchor 23 also. The gear ratio of the reed of the screw 15 and the worm gear of the housing 20 prevents the torque from being returned.

As a result, the seat S and the support bar 7 do not move even when a large forward pulling force is applied to the support bar 7 during a rear-end collision of a vehicle, for example, and the occupant using the seat belt 1 does not move. The restraint of the vehicle has been ensured and its safety has been secured.

The support brackets 8, 8 and 10 are welded to the support bar 7 supported as described above at a total of three locations, that is, two locations in the center and one location near the lower portion. An anchor support bar 6 having a plurality of adjustment holes formed in the longitudinal direction is attached between the two support brackets 8 at the center, and the anchor support bar 6 is provided at a plurality of positions through the adjustment holes. An anchor mounting bracket 6a is mounted so that the position can be adjusted. The shoulder anchor 5 of the three-point seat belt 1 is attached to the anchor attachment bracket 6a.

Further, the retractor 9 of the three-point seat belt 1 is attached to the support bracket 10 near the lower part.

Further, the lower anchor 3 of the three-point seat belt 1 is fixed to the upper rail 22 of the outer seat track.

Then, the webbing 11 pulled out from the retractor 9 is passed over the shoulder anchor 5 and hung on the lower anchor 3, and the tongue plate 4 is attached to the webbing 11 between the lower anchor 3 and the shoulder anchor 5. The outer belt of the seat belt 1 is constructed.

Further, the buckle 2, which is the inner belt of the three-point seat belt 1, is attached to the rear portion of the upper rail 21 of the inner track.

This example is configured as described above, and this configuration has the following operation effects.

That is, according to the attachment structure of the three-point seat belt 1 of this example, when the power seat switch is operated to slide the seat S, the three-point seat belt 1 is moved in synchronization with this. ..

From this, even if the seat S is slid to the foremost position, the seat belt 1 (particularly, the tongue plate 4) does not relatively retreat as in the conventional case, and it is always Since the seated person can easily reach the seated person, the wearability of the seat belt 1 can be always maintained good.

In this example, the shoulder anchor 5 of the seat belt 1 and the retractor 9 are attached to the support bar 7 that is movable in synchronization with the slide of the seat S. A load of about 2000 kgf is applied, and a large forward forward force is applied to the support bar 7. However, when the seat S is fixed, the electric slide anchor as well as the lock function of the slide mechanism is fixed. 23 is firmly locked, so that the occupant can be reliably restrained in an emergency such as a rear-end collision of the vehicle and the safety thereof can be secured.

Conventionally, there has been a structure in which the seat belt is directly attached to the seat to ensure good operability regardless of the sliding position of the seat, but this method requires a large external force in an emergency. Since the seat is directly loaded, it is necessary to reinforce the seat firmly.This not only increases the weight of the seat and thus the weight of the vehicle, but also requires a large capital investment due to a change in the seat manufacturing line. There was a problem. In this respect, according to the mounting structure of the three-point seat belt 1 of this example, the seat S can be used as it is as a conventional product, so that the weight increase of the seat and the new capital investment can be minimized. In addition, it is possible to ensure a good wearing property of the seat belt 1.

[0030]

[Effect of the device]

 In the present invention, a support bar that moves in synchronization with the slide of the seat is provided, and a shoulder anchor or a retractor is attached to this support bar so that the three-point seat belt moves along with the seat. The wearability of the three-point seat belt can be constantly maintained regardless of the sliding position of the seat.

Moreover, since the structure is not directly attached to the seat as in the conventional case, it is not necessary to reinforce the seat itself, so that the conventional seat manufacturing line can be diverted as it is. It is possible to secure good wearability of the three-point seatbelt while avoiding new capital investment as much as possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire attachment structure of a three-point seat belt according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an electric circuit diagram of an electric slide type seat.

FIG. 4 is an overall perspective view of a seat belt and a seat in a conventional seat belt mounting structure.

[Explanation of symbols]

1 ... Three-point seat belt 2 ... Buckle 3 ... Lower anchor 4 ... Tang plate
5 ... Shoulder anchor 7 ... Support bar 12 ... Electric motor for electric slide anchor 19 ... Cable, 20 ... Housing 23 ... Electric slide anchor 24 ... Roof side rail 25 ... Electric motor for slide S ... Electric slide seat 30 ... Conventional three-point type Seat belt 34 ... Retractor, 35 ... Shoulder anchor, 36 ... Lower anchor 37 ... Webbing, 38 ... Tongue plate 40 ... Driver's seat, 50 ... Center pillar

Claims (1)

[Scope of utility model registration request] 1. An electric slide anchor that operates in synchronism with a slide of the electric slide type seat is provided on a roof side rail above the outside of the electric slide type seat, and the electric slide anchor and the outer seat track of the seat are provided. A support bar is hung substantially vertically between the upper rail and the support bar so that the support bar can be moved in parallel in synchronization with the slide of the electric slide seat, and at least the shoulder anchor of the three-point seat belt is supported on the support bar. Attachment, and the lower anchor of the three-point seat belt is attached to the support bar or the upper rail, and the outer belt of the three-point seat belt is movable in synchronization with the slide of the seat. Construction.