JPH061039U - Seat belt inner support device - Google Patents

Abstract

(57) [Abstract] [Purpose] A seat belt inner support in which a base end portion of a seat belt inner (1) that moves forward and backward together with a seat body is connected to a slider slidably disposed in an anchor rail (2). In the device, to improve the strength of the anchor rail (2) against an upward load (F) and a bending moment (M). [Structure] An upward bending portion (9) capable of abutting the front end portion of the anchor rail (2) is formed at the front end of the plate-shaped bracket (5), and an L portion provided at the tip of the bending portion (9) is formed. The letter-shaped cut-and-raised portion (9A) is engaged in the rail groove (2A) at the front end of the anchor rail (2) or in the hole (10A) at the tip of the beam for reinforcing the anchor rail (2). Conventionally, it was difficult to obtain the strength especially against the bending moment (M) only with the tightening bolts (6) and (7), but the same strength can be easily obtained by the cut and raised portion (9A).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for slidably supporting a seat belt inner that moves back and forth together with a seat.

[0002]

[Prior art]

 Most of the front seats of automobiles are configured to be movable in the front-rear direction.However, with seat belt devices equipped with such movable seats, the load of the seat belt inner, that is, the seat belt, is not applied to the vehicle floor. There is a structure in which the transmitting part can be moved together with the seat. With this configuration, it is possible to prevent the occupant from pressing or loosening the seat belt when the seat is moved back and forth.

FIG. 3 shows an example of a movable type seat belt inner supporting device, in which the left side is the front of the automobile. The tip of the seat belt pulled out from the center pillar or the like is attached to the seat belt inner (1) via a buckle. The seat belt inner (1) is connected to a slider (12) slidably arranged in the anchor rail (2), and the anchor rail (2) is placed on the floor side of the automobile body, for example, on the floor tunnel (8). The plate-shaped bracket (5), which is bolted to, is fixed via the support brackets (3) (4) and bolts (6) (7) welded to the back side of the anchorage (2). There is.

[0004]

[Problems to be solved by the device]

 In the structure of FIG. 3, the load (F) and bending moment (M) applied to the anchor rail (2) are transmitted to the plate-shaped bracket (5) only via the bolts (6) and (7). Therefore, the diameter of the bolt must be large enough. Further, it is difficult to secure the strength against the bending moment only with the bolts (6) and (7).

[0005]

[Means for Solving the Problems] The present invention provides an anchor rail that slidably supports a base end portion of a seat belt inner attached to a seat body that can move back and forth, and the anchor rail on a floor of a vehicle body. In a seatbelt inner support device having a plate-shaped bracket that is fixed by a bolting method to the front of the plate-shaped bracket, an upward bending portion capable of abutting the front end of the anchor rail is formed at the front end of the plate-shaped bracket. Provided is a seatbelt inner support device in which an L-shaped cut-and-raised portion extending rearward is provided at a side end of the seat belt, and the cut-and-raised portion is engaged with a rail groove at a front end portion of the anchor rail. .

Further, according to the present invention, an anchor rail that slidably supports a base end portion of a seat belt inner attached to a seat body that can move back and forth and a rear side of the anchor rail are joined as a rigid reinforcing member. In a seatbelt inner support device having a hollow prismatic beam and a plate-like bracket for fixing the anchor rail and the beam on a floor of an automobile body by a bolting method, the seatbelt inner support device is provided with the plate-like bracket at a front end thereof. An upward bending portion capable of abutting the front end of the anchor rail is formed, and an L-shaped cut-and-raised portion extending rearward is provided at a side end of the bent portion, and the cut-and-raised portion is formed as described above. A seat belt inner support device is provided which is engaged with a hole at a front end portion of a beam.

[0007]

[Action]

 The seat belt inner moves in the front-rear direction together with the seat body. At this time, the seat belt inner is guided by an anchorage attached to the vehicle body floor via a plate-shaped bracket. When a load is applied to the seat belt inner, an upward force (F) against the anchor rail and a bending moment (M) that attempts to rotate the anchor rail act simultaneously. Conventional anchor rails are particularly difficult to exert strength against bending moment (M), but in the present invention, the cut-and-raised portion is engaged with the rail groove of the anchor rail or the hole of the reinforcing beam integrated with the anchor rail. Therefore, the cut-and-raised portion makes it easy to obtain the strength against the upward force (F) and the strength against the bending moment (M).

[0008]

【Example】

 Hereinafter, a specific example of the seatbelt inner support device according to the present invention will be described with reference to FIGS. 1 and 2. In the following description, the same components as those of FIG. 3 showing the prior art are denoted by the same reference numerals, and the description of the overlapping matters will be omitted.

In the first embodiment of the present invention shown in FIGS. 1 (A) and 1 (B), the base end portion of a seat belt inner (1) attached to the side of the main body of an automobile seat (not shown) has a side opening structure. Is connected to a slider (similar to the slider 12 of FIG. 3) slidably fitted and supported in the U-shaped anchor rail (2), and the anchor rail (2) is supported by a support bracket ( 3) (4) and tightening bolts (6) (7) to the upper surface of the plate bracket (5) fixed on the floor tunnel (8) of the vehicle body.

In the seatbelt inner support device shown in FIG. 1, an upward bending portion (9) capable of abutting the front end portion of the anchor rail (2) is formed at one end of the plate-like bracket, and the upward bending portion (9) is formed. An L-shaped cut-and-raised portion (9A) is formed by bending the end of the portion (9) on the anchor rail side toward the rear side in a substantially rectangular shape. Then, the cut-and-raised portion (9A) is fitted into the front end rail groove (2A) of the anchor rail (2) so as to be in close contact with the facing surface, and in this state, the support brackets (3) (4) and the plate-shaped bracket (5). By connecting and fixing the space between them with tightening bolts (6) and (7), the load (F) and bending moment (M) distributed from the seat belt inner (1) to the plate-like bracket (5) can be dispersed and carried. It forms the structure.

In the seatbelt inner support device, the load (F) and bending moment (M) applied to the seatbelt at the time of sudden braking or occurrence of a collision accident are first transmitted to the seatbelt inner (1). After that, it is transmitted to the plate-like bracket (5) via the anchor rail (2), the support brackets (3) and (4), and the tightening bolts (6) and (7). At this time, the L-shaped cut-and-raised portion (9A) fitted in the anchor rail (2) in close contact with the facing surface cooperates with the tightening bolts (6) and (7) to load (F) and It functions as a dispersion bearing member for bending moment (M) and suppresses deformation of anchor rail (2). In particular, the cut-and-raised part (9A) plays an important role in obtaining strength against the bending moment (M). That is, it is difficult for the tightening bolt (7) to exert strength with respect to the rotation of the anchor rail (2) in the (M) direction. According to the above, the strength can be easily obtained.

On the other hand, in the second embodiment of the present invention shown in FIG. 2, the base end portion of the seat belt inner (1) attached to the side of the main body of an automobile seat (not shown) has a U-shaped side opening structure. The anchor rail (2) is connected to a slider (not shown) slidably fitted and supported in the inner anchor rail (2), and the anchor rail (2) is arranged as a rigidity reinforcing member on the back side, that is, the non-open side. The hollow prismatic beam (10) provided, the support brackets (3) and (4) welded to the rear side of the beam (10), and the tightening bolts (6) and (7) Bolt on the upper surface of the plate bracket (5) fixed on the floor tunnel (8) of the vehicle body.

In the seat belt inner supporting device shown in FIG. 2, an upward bending portion (9) capable of abutting the front end of the beam (10) is formed on the front end of the plate-like bracket (5). The beam-side end of the bent portion (9) is bent rearward at a substantially right angle to form an L-shaped cut-and-raised portion (9A). Then, the cut-and-raised portion (9A) is fitted into the hole (10A) at the front end portion of the beam (10) so as to be in close contact with the opposing surface, and the space between the support brackets (3) and (4) and the plate-shaped bracket (5). Are fastened by tightening bolts (6) and (7).

In the support device, a tensile load (F) and a bending moment (M) applied to the seat belt at the time of sudden braking or occurrence of a collision accident are first transmitted to the seat belt inner (1), and thereafter, , The anchor rail (2), the beam (10), the support brackets (3) and (4), and the fastening bolts (6) and (7) to the plate-shaped bracket (5). At this time, the L-shaped cut-and-raised portion (9A) fitted in the beam (10) in close contact with the facing surface cooperates with the tightening bolts (6) and (7) as in the embodiment of FIG. It then functions as a dispersion bearing member for the load (F) and bending moment (M), and suppresses the deformation of the anchor (2).

[0015]

[Effect of device]

 According to the present invention, the cut-and-raised part of the plate-shaped bracket is engaged with the front rail groove of the anchor rail or the hole of the front end of the anchor rail reinforcing beam, so that it is transmitted from the seat belt inner to the anchor rail. The tensile load and bending moment are dispersed and supported not only by the tightening bolts but also by the cut-and-raised parts, so that the strength of the anchor rail especially for bending moments can be easily obtained, which allows the anchor rail Since a good sliding function of the slider can be ensured and the support strength of the anchor rail is improved, it is possible to use a relatively small diameter mounting bolt.

Further, since the anchor rail or the beam for reinforcing the anchor rail can be positioned by the cut-and-raised portion, the bolt holes can be easily aligned and the workability of assembling can be improved.

[Brief description of drawings]

FIG. 1A is an exploded perspective view of a seat belt inner support device showing a first specific example of the present invention, and FIG. 1B is a cross-sectional view of essential parts of the seat belt device.

FIG. 2 is an exploded perspective view of a seat belt inner support device showing a second embodiment of the present invention.

FIG. 3 is an exploded perspective view of a conventional seat belt inner support device.

[Explanation of symbols]

 1 Seat belt inner 2 Anchor rail 2A Rail groove at the front end of the anchor rail 3 Support bracket 4 Support bracket 5 Plate bracket 6 Tightening bolt 7 Tightening bolt 8 Car body (floor tunnel) 9 Bending part upward 9A L-shape -Shaped cut-and-raised part 10 beam 10A hole at front end of beam

Claims (2)

[Scope of utility model registration request] 1. An anchor rail that slidably supports a base end portion of a seat belt inner attached to a seat body that can move back and forth, and a plate shape that fixes the anchor rail on a floor of an automobile body by a bolting method. In a seatbelt inner support device having a bracket, an upward bending portion capable of abutting the front end of the anchor rail is formed at the front end of the plate-shaped bracket, and extends rearward at the side end of the bending portion. A seatbelt inner support device comprising an L-shaped cut-and-raised portion that projects, and the cut-and-raised portion is engaged with a rail groove at a front end portion of the anchor rail. 2. An anchor rail that slidably supports a base end portion of a seat belt inner attached to a seat body that can move back and forth, and a hollow prismatic shape that is joined to a rear side of the anchor rail as a rigidity reinforcing member. In a seatbelt inner support device having a beam and a plate-shaped bracket for fixing the anchor rail and the beam on a floor of an automobile body by a bolting method, a front end of the anchor rail is abutted against a front end of the plate-shaped bracket. A possible upward bending portion is formed, an L-shaped cut-and-raised portion extending rearward is provided at a side end of the bent portion, and the cut-and-raised portion is engaged with a hole at a front end portion of the beam. A seatbelt inner support device that is made up of.