JP2584169Y2 - Seat belt assembly structure for rotating seats for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a seat belt to a rotating seat for a vehicle.

[0002]

2. Description of the Related Art In a wagon vehicle or the like, as a support mechanism for supporting a rear seat, a rear seat is mounted on a rotating disk so that the rear seat can be freely rotated. An example of the support mechanism is shown in FIGS. A guide rail 9 is provided on a pair of seat legs 8 provided on the vehicle floor F, and a turntable 1 including a turn lower 1a and a turn upper 1b is provided thereon. The turn lower 1a has a ring shape and has a pair of arc-shaped turn uppers 1b along its inner surface.
Are slidably provided.

An unillustrated rear seat is placed and fixed on a reinforcement 2 connecting the rear ends of the turn upper 1b. The reinforcement 2 has a long shape extending in the vehicle width direction.
a and the reinforcement upper 2b form a closed cross section. Reinforcement lower 2a has bolts 13 at a plurality of locations at the rear end of turn upper 1b of turntable 1,
Fastened with a nut 14.

When the inner seat belt 3 is mounted on the rear seat rotatably supported by the support mechanism, conventionally, an anchor plate attached to the front end of the seat belt 3 is attached to the rear surface of the reinforcement 2. 4 was fastened with bolts 11 and nuts 12.

[0005]

However, in the above-mentioned conventional seat belt mounting structure, the seat belt load is applied from the anchor plate 4 via the reinforcement 2 rear surface portion and the reinforcement lower 2a superimposed on the anchor plate 4. In order to input power to the turn upper 1b fastened to the bottom surface of the reinforcement lower 2a, it is necessary to increase the strength by making each member thick. In addition, the mounting position of the anchor plate 4 on the reinforcement 2 is a position offset from the fastening position of the reinforcement 2, and the seat belt load acts on the reinforcement 2 in the twisting direction, which is disadvantageous in terms of strength. In order to prevent the deformation of the ment 2, it is necessary to increase the strength by increasing the thickness of the ment 2. Also, there are many parts interposed in the seat belt load transmission path. Therefore, there are problems in weight, assembly workability and cost.

The present invention has been made in view of the above circumstances, and provides a seat belt mounting structure of a rotating seat for a vehicle which can reduce a weight, is low in cost, and can mount a seat belt with good workability. This was done as an issue.

[0007]

The present invention, as shown in FIGS. 1 and 2, comprises a turn lower 1a and a turn upper 1b, on which a vehicle seat (not shown) is rotatably supported. A reinforcement 2 for mounting a vehicle seat is formed on the turn upper 1b by forming a closed cross-section by the reinforcement lower 1a and the reinforcement upper 1b, and the turn upper 1b and the reinforcement superimposed on the reinforcement 2 are provided. Mentor lower 2a, Reinforcement lower 2a and Reinforcement upper 2
b, the connecting bolt 6 is passed through the spacer 5 and the reinforcement upper 2b from the back side of the turn upper 1b, and the seat belt anchor plate 4 is attached to the tip of the connecting bolt 6 protruding above the reinforcement upper 2b. It is characterized by being tightened with a nut 7.

[0008]

The seat belt anchor plate 4, the reinforcement upper 2b, the spacer 5, and the reinforcement lower 2a are jointly fastened to the turn upper 1b by connecting bolts 6 and nuts 7. Most of the seatbelt load acts on the turn upper 1b via the connecting bolt 6 without passing through the reinforcement 2. or,
The spacer 5 provided between the reinforcement lower 2a and the reinforcement upper 2b functions as a bulkhead of the reinforcement 2 having a closed cross-section formed by the reinforcement lower 2a and the reinforcement upper 2b. Therefore, the required strength of each member interposed in the seat belt load transmission path, particularly, the reinforcement 2 can be small, and the plate thickness can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on an assembling structure in which an inner seat belt is installed at the center of a two-seat rotary rear seat in the vehicle width direction. In FIG. 1, two left and right seat legs 8 are disposed on a vehicle floor F in the front-rear direction. On each seat leg 8, a lower rail 9a and an upper rail 9 that slides in the front-rear direction along the lower rail 9a are provided.
A guide rail 9 is provided, and the turntable 1 is fixed thereon. The turntable 1 has an upper rail 9
b, and a pair of arc-shaped turn uppers 1b slidably provided in the turn lower 1a.
Consisting of The front ends of both turn uppers 1b are connected members 10
, And the rear end is fixed to the reinforcement 2. A rear seat (not shown) is placed and fixed to the reinforcement 2.

As shown in FIG. 2, the turn upper 1b is
The stopper member 15 prevents the turn lower 1a from coming off. The reinforcement 2 has a closed cross section including a reinforcement lower 2a superimposed on the turn upper 1b and a reinforcement upper 2b having a side edge welded and fixed to the reinforcement lower 2a. At the center of the reinforcement 2, two cylindrical spacers 5 are fixed by welding.

As shown in FIG. 2, at the position of each spacer 5, from the back side of the turn upper 1b, the turn upper 1b
To spacer 5 and further reinforcement upper 2
b through the connection bolt 6 to the front end of the shaft projecting above the reinforcement upper 2b.
An anchor plate 4 attached to the tip is fastened by a nut 7, and the anchor plate 4 is fixedly fastened to the reinforcement 2, the spacer 5, and the turn upper 1b. The reinforcement lower 2a is also bolted at a plurality of locations other than the locations where the spacers 5 are installed.

In the seat belt assembling structure of the present invention having the above structure, when the seat belt load is input, most of the seat belt load is transmitted from the anchor plate 4 to the connecting bolt 6.
The input of the seat belt load to the reinforcement 2 is small. Moreover, the spacer 5 functions as a bulkhead of the reinforcement 2 having a closed cross section. Therefore, when the seatbelt load is input, the torsional load generated in the conventional seatbelt assembling structure does not act on the reinforcement 2.

[0013]

According to the seat belt assembling structure of the present invention, the members required for the input path of the seat belt load, in particular, the required strength of the reinforcement can be small, so that the thickness can be reduced. Contributes to reducing vehicle weight. Also, since the attachment of the seat belt to the reinforcement can be performed using the same connection bolts as the attachment to the turntable of the reinforcement, no extra bolts and nuts are required, and the number of parts and weight can be reduced. The seat belt can be attached to the rotating seat at low cost and with good workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a structure for assembling a seat belt of a rotating seat for a vehicle according to the present invention;

FIG. 2 is a cross-sectional view of the seat belt assembly structure of the present invention at a position along the line II-II in FIG.

FIG. 3 is a perspective view of a conventional seat belt assembly structure.

4 is a cross-sectional view of the conventional seat belt assembly structure at a position along line IV-IV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turntable 1a Turn lower 1b Turn upper 2 Reinforcement 2a Reinforcement lower 2b Reinforcement upper 3 Seat belt 4 Seat belt anchor plate 5 Spacer 6 Connecting bolt F Vehicle floor

Continuation of the front page (56) References JP-A-4-325352 (JP, A) JP-A-59-34959 (JP, A) JP-A-63-96946 (JP, U) JP-A-58-188360 (JP, A) , U) Shokai 63-53 (JP, U) Shohei 4-75752 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60R 22/26 B60N 2/14

Claims (1)

(57) [Scope of request for utility model registration] 1. A seat belt mounting structure for mounting a seat belt on a vehicular rotary seat rotatably supported by a rotary disk provided on a vehicle floor, wherein the rotary disk is mounted on a turn lower and on the turn lower. , A turn upper slidably provided along the turn upper, a reinforcement cross section is formed on the turn upper by a reinforcement lower and a reinforcement upper, and a reinforcement for mounting a vehicle seat thereon is provided. The connecting bolt is passed from the back side of the turn upper to the turn upper, the reinforcement lower superimposed on the turn upper, the spacer and the reinforcement upper interposed between the reinforcement lower and the reinforcement upper, and a bolt shaft tip portion. Over the reinforcement upper The seat belt anchor plate, the reinforcement upper, the spacer, and the reinforcement lower are fastened together with the turn upper of the turntable by fastening an anchor plate of the seat belt to the bolt shaft tip with a nut. Belt assembling structure for rotating seats for vehicles.