JP2016016778A - Seat belt fitting bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt fitting bracket capable of effectively ensuring the rigidity strength of an installation seat portion by a small-sized bracket body.SOLUTION: The present invention provides a seat belt fitting bracket 13 comprising: a bracket body 21 laid between two roof bows 3 and 5 of a vehicle body, including a first fixed seat portion 23 provided on one end thereof to be fixed to one roof bow, and including a second fixed seat portion 25 provided on the other end thereof to be fixed to the other roof bow; and an installation seat portion 27 provided on the bracket body 21, a retractor of a seat belt device being installed on the installation seat portion 27, and the installation seat portion 27 being provided on a plate surface portion of the bracket body 21 to be apart from a line connecting the first fixed seat portion 23 to the second fixed seat portion 25. The bracket body 21 includes a reinforcement portion 29 provided in the plat surface portion among the first fixed seat portion 23, the second fixed seat portion 25, and the installation seat portion 27 and shaped into a triangular frame whose sides correspond to sides of a triangle having, as respective angular portions, points at which the first fixed seat portion 23, the second fixed seat portion 25, and the installation seat portion 27 are present, and the triangular shape of the reinforcement portion 29 can ensure rigidity strength.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a seat belt mounting bracket that is spanned between two roof bows.

Some automobiles (vehicles) having a rear seat such as a second seat and a third seat behind a front seat (first seat) such as a wagon are equipped with a three-seat rear seat.
By the way, the center seat of the three-seat rear seat may be equipped with a three-point seat belt device, like the other seats. In this three-point seat belt device for the center seat of the rear seat, as disclosed in Patent Documents 1 and 2, a retractor is embedded in the roof of the automobile, and the seat belt is installed from the ceiling in the vehicle interior in order to ensure the riding comfort of the seat. In some cases, a structure that allows the to be pulled out is employed.

By the way, an impact load is applied to the retractor through the seat belt. Therefore, in the roof-embedded type, in order to secure the support strength, a seat belt mounting bracket is spanned between two roof bows arranged side by side in the front-rear direction of the roof of the vehicle body, and a retractor is installed on this seat belt mounting bracket. There is something to be attached.
In such a roof embedding type, a retractor is installed on the plate surface of the bracket main body using a flat bracket main body so that an occupied space is suppressed.

  For this reason, in the bracket body, a number of various reinforcing portions are provided around the installation seat portion on which the retractor is installed to increase the rigidity around the installation seat portion where the load is applied.

Japanese Patent Laid-Open No. 11-20611 JP 2001-199307 A

However, in the structure in which various reinforcing portions are simply provided around the installation seat portion, the required rigidity strength cannot be ensured unless the reinforcing portions are provided in a wide area. Therefore, the whole bracket body, that is, the seat belt mounting bracket tends to be enlarged.
Accordingly, an object of the present invention is to provide a seat belt mounting bracket that can effectively secure the rigidity and strength of the installation seat portion with a small bracket body.

  An aspect of the present invention includes a first fixed seat portion that is spanned between two roof bows arranged side by side in the front-rear direction on a roof of a vehicle body, and is fixed to one roof bow on one end side, and the other end side A seat belt mounting bracket comprising a flat bracket body having a second fixed seat portion fixed to the other roof bow, and a mounting seat portion provided on the bracket body and on which a retractor of the seat belt device is installed. The installation seat is provided on the plate surface portion of the bracket main body shifted from the line connecting the first fixed seat and the second fixed seat, and the bracket main body includes the first fixed seat, the second fixed seat, Triangular frame-shaped reinforcing parts that form triangular sides with the first fixed seat part, the second fixed seat part, and the place where the installation seat part is provided as corners on the plate surface portion between the installation seat parts. (Claim 1).

Preferably, the triangular frame-shaped reinforcing portion is provided between the first bead portion formed between the installation seat portion and the first fixed seat portion, and between the installation seat portion and the second fixed seat portion. It has the 2nd bead part formed, and the 3rd bead part formed along between the 1st fixed seat part and the 2nd fixed seat part (Claim 2).
Preferably, the triangular frame-shaped reinforcing portion further includes a reinforcing bead on a plate surface portion of the bracket body surrounded by the first bead portion, the second bead portion, and the third fixed seat portion. .

  According to the present invention, the reinforcing portion forms a triangular frame and thus provides high strength. Moreover, the positions of the corners of the triangular frame are the fixed seats that are fixed to the mounting seats on which the retractors are installed and the frame members of the vehicle body. For this reason, the triangular frame shape provided by the reinforcing portion effectively increases the rigidity strength around the installation seat portion (reinforcement). In addition, since the rigidity strength of the bracket body depends on the triangular frame shape of the reinforcing portion, the bracket body portion outside the reinforcing portion can be reduced.

Therefore, the small bracket main body can effectively secure the rigidity and strength of the seat, and the seat bell mounting bracket can achieve both the rigidity and the small weight.
In particular, a simple and lightweight structure can be achieved by forming the reinforcing portion with a bead portion (claim 2). Moreover, by forming the reinforcing beads on the plate surface inside the reinforcing portion, the rigidity and strength can be further improved without impairing the reduction in size and weight (Claim 3).

The perspective view which shows the seatbelt apparatus of the center seat of the rear seat mounted in the vehicle. The top view of the seatbelt attachment bracket in the seatbelt apparatus. The top view for demonstrating the rigidity strength of the mounting bracket.

Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
FIG. 1 shows the rear side of a vehicle to which the present invention is applied, for example, a wagon car.
The main structure of the wagon car will be described. In FIG. 1, 1 is the body of the wagon car (vehicle), 1a is the roof of the car body 1, 3 is the rear roof rail disposed at the rear end of the roof 1a, and 5 is the rear roof rail. 3 is a rear roof bow disposed at a point adjacent to the front side of the vehicle (both are equivalent to the roof bow of the present application). Incidentally, the rear roof rail 3 and the rear roof bow 5 are skeleton members of the vehicle body 1 arranged along the vehicle width direction between a roof panel constituting the roof 1a and a head lining (both not shown).

  Reference numeral 7 denotes a rear seat installed on the rear side in the passenger compartment. Here, the rear seat 7 is a second seat disposed behind a front seat (not shown). The rear seat 7 is composed of a seat for three passengers that can be seated on the center and both sides. This rear seat 7 is equipped with three-point seat belt devices 9 for three persons. FIG. 1 shows only the three-point seat belt device 9 for the central seat α of the rear seat 7.

  The three-point seat belt device 9 for the central seat α employs a roof embedded type in which a retractor 11 is built in a roof 1a (between a roof panel and a head lining) of the vehicle body 1. Specifically, the seat belt device 9 hangs the seat belt mounting bracket 13 between two roof bows, here, between the rear roof rail 3 and the rear roof bow 5, for example, an intermediate portion in the vehicle width direction of both members. A structure is used in which the retractor 11 around which the seat belt 11a is wound is installed on the seat belt mounting bracket 13 so that the retractor 11 is placed inside the roof 1a, that is, between the roof panel and the head lining.

  More specifically, the front end side of the seat belt 11a of the retractor 11 can be drawn into the vehicle interior from a belt outlet port portion 19 provided in a ceiling (head lining) portion of the vehicle interior on the rear side of the rear seat 7. A front end tongue 15a is provided at a front end portion of the seat belt 11a, and an intermediate tongue 15b (a component that is slidably supported by the seat belt 11a) is provided in the middle of the seat belt 11a. Thus, the seat belt 11a is pulled out from the retractor 11 on the ceiling, the front end tongue 15a is engaged with the front end buckle 17a on one side of the central seat α, and the remaining intermediate tongue 15b is placed on the opposite side of the central seat α. By engaging with 17b, the upper body of an occupant (not shown) sitting on the central seat α is held.

FIG. 2 shows a view (plan view) of the seat belt mounting bracket 13 as viewed from above.
The seat belt mounting bracket 13 will be described in detail. The seat belt mounting bracket 13 has a bracket body 21. The bracket body 21 is formed of a flat panel member so that the retractor 11 can be easily stored between the roof panel and the headlining. A fixed seat 23 (corresponding to the first fixed seat portion of the present application) that overlaps the upper portion of the rear roof bow 5 is formed at the front end of the bracket main body 21 in the front-rear direction of the vehicle. A fixed seat 25 (corresponding to the second fixed seat portion of the present application) that overlaps with the upper portion of the rear roof rail 3 is formed in the portion. The fixed seat 23 and the rear roof bow 5, and the fixed seat 25 and the rear roof rail 3 are joined by spot welding, for example. Thus, the bracket body 21 is fixed between the rear roof rail 3 and the rear roof bow 5. Reference numerals 23a, 25a, and 25b in FIGS. 2 and 3 indicate spot welding marks.

  In order to hold the occupant of the central seat α with the seat belt 11a, the seat belt 11a is slanted from the shoulder portion on one side of the occupant to the other side of the waist portion. For this reason, the seat belt 11a can be pulled out into the vehicle interior from an oblique direction. Here, the retractor 11 is disposed in an oblique direction in which the seat belt 11a can be pulled out obliquely forward at a position shifted from the line connecting the fixed seat 23 and the fixed seat 25 in the bracket body 21. Therefore, the bracket body 21 has a mounting seat 27 (corresponding to the mounting seat portion of the present application) on which the retractor 11 is installed at a point shifted from the line connecting the fixed seat 25 to the outer side in the vehicle width direction (left side). Is formed. A fixed seat (not shown) of the retractor 11 is fixed to the installation seat 27, and the retractor 11 is suspended from the installation seat 27. Of course, the retractor 11 and the belt outlet port portion 19 are directed obliquely forward so that the seat belt 11a can be pulled out toward the central seat α where the seat belt 11a is disposed obliquely forward.

Since the seat belt mounting bracket 13 is a component that receives an impact load F (load of the seat belt 11a) through the retractor 11 in the event of a vehicle collision, the bracket body 21 including the mounting seat 27 has a rigidity and strength that can withstand the load F. Desired. In addition, downsizing is also required (to reduce vehicle weight).
In order to achieve both the securing of the rigidity and the miniaturization, the bracket body 21 is provided with a triangular frame-shaped reinforcing portion 29 as shown in FIG.

In other words, the reinforcing portion 29 uses the layout of the installation seat 27 that is shifted from the line connecting the fixed seat 23 and the fixed seat 25, and uses the layout of the installation seat 27, the fixed seat 23, and the fixed seat 25. This is a triangular reinforcing structure that connects people.
Specifically, as shown in FIG. 2 and FIG. 3, the reinforcing portion 29 includes a central portion of the mounting seat 27 and the fixed seat 25 in the bracket main body 21, in this case, a spot portion (25 a) on the right side in the vehicle width direction. A bead portion 31a formed across the plate surface portion A1 between, and a bead portion 31b formed over the plate surface portion A2 between the central portion of the installation seat 27 and the central portion of the fixed seat 23; Similarly, it has a bead portion 31c formed across the plate surface portion A3 between the center portion of the fixed seat 23 and the spot portion (25a) on the right side in the vehicle width direction of the fixed seat 25. Any of the bead portions 31 a to 31 c is formed by a belt-shaped recess extending in a straight line between the fixed seats 23, the fixed seats 25, and the installation seats 27. Thereby, as shown in FIG. 2 and FIG. 3, the bead portions 31 a to 31 c formed in A <b> 1 to A <b> 3 are triangular sides with the corners of the fixed seat 23, the fixed seat 25, and the installation seat 27, respectively. It is provided to make a part. That is, as indicated by the oblique line S in FIG. 3, the plate surface of the bracket body 21 has the fixed seat 23, the fixed seat 25, and the mounting seat 27 as corners, and the bead portions 31 a to 31 c between these three members are formed. A triangular frame-shaped reinforcing portion 29 is formed as a side.

Since the reinforcing portion 29 has a triangular shape, the bracket body 21 has high rigidity and strength. Moreover, since the portions (fixing seats 23 and 25 and the mounting seat 27) that receive the shock load F from the seat belt 11a are arranged at the corners of the triangle, the bracket body 21, that is, the installation. The rigidity strength around the seat 27 is effectively reinforced.
In addition, since the rigidity strength of the bracket body 21 depends on the shape of the reinforcing portion 29, even if the region of the bracket body portion is reduced from the outside of the bead portions 31a to 31c, which is the outer region from the reinforcing portion 29, The rigidity strength that can sufficiently withstand the shock load F is ensured. That is, the bracket main body portion outside the reinforcing portion 29 can be reduced. Incidentally, FIG. 3 shows a bracket body 21 in which the outer shape is reduced by reducing the bracket body portion outside the reinforcing portion 29 from the outer shape δ shown by a two-dot chain line.

As described above, the seat belt mounting bracket 13 can effectively secure the rigidity and strength capable of withstanding the load F with the small bracket body 21 by adopting the triangular frame-shaped reinforcing portion 29. As a result, the seatbelt mounting bracket 13 can achieve both of ensuring the rigidity and reducing the size and weight.
In addition, since the reinforcing portion 29 is formed by the bead portions 31a to 31c instead of separate reinforcing members, a simple and lightweight structure is sufficient.

  In addition, as shown in FIGS. 2 and 3, a reinforcing bead, for example, B <b> 1 in FIG. 3, is attached to the plate surface portion of the bracket body 21 surrounded by the bead portions 31 a to 31 c, that is, the plate surface portion inside the reinforcing portion 29. As shown, a linear reinforcing bead 41 is provided between the bead part 31b and the bead part 31c, or a linear reinforcing bead is provided between the bead part 31a and the bead part 31c as shown by B2 in FIG. By providing the bead 43, the rigidity strength of each part of the bracket body 21 can be further increased. In particular, by forming the reinforcing beads 41 and 43 so as to form a triangular reinforcing portion inside the reinforcing portion 29, the rigidity strength of the bracket body 21 can be effectively increased. In addition, since the structure simply provides the reinforcing beads 41 and 43 inside the reinforcing portion 29, the rigidity and strength can be increased without impairing the reduction in size and weight of the bracket body 21.

  It should be noted that each configuration and combination thereof in the above-described embodiment is an example, and the addition, omission, replacement, and other changes of the configuration are possible without departing from the spirit of the present invention. Needless to say. Further, the present invention is not limited by the embodiment, and needless to say, is limited only by the “claims”. In the above-described embodiment, the structure using the bead portion has been described. However, the structure is not limited to this, for example, a structure using a beam member instead of the bead portion may be used. The structure is not limited.

1 Car body 1a Roof 3, 5 Rear roof rail, Rear roof bow (roof bow)
7 Rear seat 9 Three-point seat belt device 11 Retractor 13 Seat belt mounting bracket 21 Bracket body 23 Fixed seat (first fixed seat)
25 Fixed seat (second fixed seat)
27 Installation seat (Installation seat)
29 Reinforcement part of triangular frame shape 31a Bead part (first bead part)
31b Bead part (second bead part)
31c Bead part (third bead part)
41, 43 Reinforcement beads

Claims (3)

The first roof has a first fixed seat that is spanned between two roof bows arranged side by side in the longitudinal direction on the roof of the vehicle body, and is fixed to the one roof bow on one end side, and the other roof bow on the other end side. A flat bracket body having a second fixed seat fixed to
A seatbelt mounting bracket provided on the bracket body and provided with a seat for mounting a retractor of the seatbelt device;
The installation seat is provided on a plate surface portion of the bracket body that is shifted from a line connecting the first fixed seat and the second fixed seat,
The bracket body is
The points where the first fixed seat portion, the second fixed seat portion, and the installation seat portion are located on the plate surface portion between the first fixed seat portion, the second fixed seat portion, and the installation seat portion are respectively corners. A seat belt mounting bracket, comprising a triangular frame-shaped reinforcing portion that forms each side of a triangular portion. The triangular frame-shaped reinforcing portion is
A first bead portion formed between the stationary seat portion and the first fixed seat portion;
A second bead portion formed between the stationary seat portion and the second fixed seat portion;
The seat belt mounting bracket according to claim 1, further comprising a third bead portion formed between the first fixed seat portion and the second fixed seat portion.   The triangular frame-shaped reinforcing portion further includes a reinforcing bead on a plate surface portion of the bracket body surrounded by the first bead portion, the second bead portion, and the third fixed seat portion. Item 5. A seat belt mounting bracket according to Item 2.

Images