JP2003019943A - Shoulder adjuster structure - Google Patents

Abstract

(57) [Problem] To provide a shoulder adjuster structure in which a protrusion amount of a mounting portion is shortened while securing a cushioning function against an impact, and a mounting space for an adjustment rail is reduced. SOLUTION: Attachment portions 12 provided at both ends of a slide rail portion 11 of an adjustment rail 10 are inclined obliquely outward from the slide rail portion 11 so as to provide a predetermined interval S between the slide rail portion 11 and a vehicle body. It is composed of a leg 13 projecting at an angle, and a mounting flange 14 provided at the tip of the leg 13. The mounting flange 14 is formed by cutting and raising a part of the leg 13. Piece 13a
Are formed toward the side where the slide rail portion 11 is disposed, and the cut-and-raised piece 13a is provided with a vehicle body attachment point 14a to shorten the span between the vehicle body attachment points 14a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoulder adjuster structure in which a through anchor for inserting and supporting an intermediate portion of a seat belt is movably engaged with an adjust rail according to a shoulder position of a seat belt wearer. .

[0002]

2. Description of the Related Art As for a seat belt mounted on a vehicle, for example, as shown in Japanese Patent Laid-Open No. 11-34797, the waist and shoulders of the wearer are restrained by a continuous seat belt. A point type seat belt device is known.

Also, the restraint position of the shoulder portion can be adjusted in the vertical direction by a shoulder adjuster in consideration of the difference in physical constitution of the seatbelt wearer.

As shown in FIGS. 6 and 7, the conventional shoulder adjuster 1 is provided for the front seats such as the driver's seat and the passenger's seat, and is located inside the center pillar trim 2a near the upper end of the center pillar 2 of the vehicle. Adjusting rail 3 fixed to the inner side surface of the center pillar 2 and a through anchor 4 that is movably locked to the adjusting rail 3 and inserts and supports an intermediate portion of a seat belt (not shown). It consists of and.

By moving the through anchor 4 along the adjust rail 3 in accordance with the position of the shoulder of the seatbelt wearer, the seatbelt can be fitted to the wearer's physique. There is.

As shown in FIG. 8, the adjust rail 3 is vertically adjustable along the center pillar 2 and has a channel-shaped slide rail portion 3a.
The mounting portion 5 projecting in a flat plate shape from both upper and lower end portions of is fixed to the center pillar 2 with a mounting bolt 6 and a nut 6a.

[0007]

However, according to the conventional shoulder adjuster structure, as shown in FIG. 9, the mounting portion 5 of the adjusting rail 3 is inclined from the slide rail portion 3a toward the center pillar 2. And a mounting flange 5b whose tip is bent further outward along the center pillar 2, and a bolt insertion hole 5c is formed in the mounting flange 5b. The bolt insertion hole 5c serves as a vehicle body attachment point.

That is, by slanting the leg portions 5a in this manner, the slide rail portion 3a is floated from the center pillar 2 by a predetermined distance S (see FIG. 8), and the occupant can adjust the rail with a certain amount of impact force. 3, the leg portion 5a is deformed when it interferes with the shock absorber 3, and a shock absorbing function is provided to improve the collision safety.

However, the mounting portion 5 of the conventional adjusting rail 3 is tilted from the slide rail portion 3a and the leg portion 5 is formed.
Since a is projected outward, and the mounting flange 5b is further bent outward from the tip end of the leg 5a, the mounting flange 5b is protruded as shown in FIG. Between the bolt insertion hole 5c and the slide rail portion 3a, a total length L (L = L = L = L) is obtained by summing the protrusion distance a of the leg portion 5a and the distance b from the base end of the mounting flange 5b to the bolt insertion hole 5c.
a + b) exists, and there is a problem that the protrusion length of the attachment portion 5 is inevitably long.

For this reason, the pitch between the upper and lower fixing points of the adjust rail 3 becomes long, and a large mounting space for the center pillar 2 is required, which limits the freedom of layout of the adjust rail 3 and limits the mounting. If it is attempted to place it in the space by force, the length of the slide rail portion 3a is shortened and the adjustment allowance of the through anchor 4 is limited.

Therefore, the present invention provides a shoulder adjuster structure in which a shock absorbing function is secured, collision safety is improved, and a protrusion amount of a mounting portion is shortened to reduce a mounting space of an adjust rail. It is a thing.

[0012]

According to the invention of claim 1, there is provided an adjust rail for movably locking a through anchor for supporting the seat belt, and the adjust rail is provided at both ends of the slide rail portion. The shoulder adjuster structure is fixed to the inner panel of the vehicle body from the vehicle interior side via the provided mounting portion, wherein the mounting portion has a slide rail portion such that a predetermined space is provided between the slide rail portion and the vehicle body. From a leg portion projecting obliquely toward the inner panel from above, and a mounting flange provided in the vicinity of the tip of the leg portion. The mounting flange is a cut-and-raised piece obtained by cutting and raising a part of the leg portion. Is formed toward the arrangement side of the slide rail portion, and the cut-and-raised piece is provided with a vehicle body attachment point.

According to a second aspect of the invention, in the shoulder adjuster structure according to the first aspect, the leg portion is provided with an extending portion extending from the slide rail portion in a length direction of the slide rail portion, and It is formed by an inclined portion that is inclined toward the inner panel following the extended portion and a mounting flange that is cut and raised at the tip portion following the inclined portion, and these are the boundaries between the slide rail portion and the extended portion. At least three parts, the boundary portion between the extended portion and the inclined portion and the boundary portion between the inclined portion and the mounting flange, are bent and deformed by a pressing force acting on the slide rail portion from the inside of the vehicle or more. It is characterized by doing so.

According to a third aspect of the present invention, in the shoulder adjuster structure according to the first or second aspect, the leg portion is provided with a constricted portion at a portion connected to the slide rail portion. Is characterized by.

In the invention of claim 4, claims 1 to 3 are provided.
In the shoulder adjuster structure according to claim 1, the cut-and-raised piece is formed inward in the width direction of the leg so as to form the inclined portion on both sides of the leg in a bifurcated shape, and the inside of the bifurcated inclined portion is formed. Is characterized by being formed in a substantially semicircular shape.

[0016]

According to the invention as set forth in claim 1, the mounting flange of the mounting portion is formed by cutting and raising the cut-and-raised piece obtained by cutting and raising a part of the leg portion toward the arrangement side of the slide rail portion. By providing a vehicle body attachment point on the cut-and-raised piece, the vehicle body attachment point is provided at a position that is closer to the slide rail portion arrangement side than the tip end portion of the leg portion.

Therefore, the span between the vehicle body mounting points of the adjust rail can be shortened, and the space for mounting the adjust rail can be reduced accordingly, and the degree of freedom in layout when fixing the vehicle to the vehicle body can be increased. .

Further, since the span between the vehicle body mounting points is shortened, the effective length of the slide rail portion can be increased, and the adjustment allowance of the through anchor can be set longer.

Further, since the leg portion is provided so as to project from the slide rail portion toward the inner panel so as to be inclined, a predetermined space is provided between the slide rail portion and the vehicle body. When the rail interferes with the slide rail and a pressing load exceeding a predetermined value is applied, the slide rail is pushed in with the deformation of the legs, so the adjust rail exerts a shock absorbing function against impact and improves collision safety. can do.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described above, the leg portion includes an extending portion that extends from the slide rail portion in the length direction of the slide rail portion, and an inclined portion that is inclined toward the inner panel subsequent to the extending portion. And a mounting flange formed by cutting and raising the tip of the slid portion, the boundary portion between the slide rail portion and the extending portion, the boundary portion between the extending portion and the slant portion, and the slant portion. Since at least three places of the boundary portion between the mounting flange and the mounting flange are bent and deformed by a pressing force acting on the slide rail portion from the inside of the vehicle,
When an occupant interferes with a side impact or the like and a pressing load is applied to the slide rail portion, the leg portions can be bent and deformed at the above-mentioned three places.

Moreover, in this structure having an inclined portion between the extended portion and the mounting flange, the boundary portions of the three points are appropriately mountain-folded or valley-folded with the inclined portion interposed therebetween,
The slide rail portion can be easily pushed in without the legs being stretched, the absorbability of impact energy can be enhanced, and the cushioning function and collision safety can be improved.

According to the invention of claim 3, claim 1
Further, in addition to the effect of the invention of claim 2, since the leg portion is provided with the constricted portion at the portion connected to the slide rail portion, a large tensile load acts on the seat belt, which acts through the through anchor. When input to the slide rail part, the pressing force is concentrated on the constricted part to positively twist and deform the constricted part,
The input can be absorbed.

According to the invention of claim 4, claim 1
In addition to the effects of the inventions of 3 to 3, the cut-and-raised piece is formed inward in the width direction of the leg portion so that the inclined portion is formed in a bifurcated shape on both sides of the leg portion. Since the inner side of this is formed in a substantially semicircular shape, the inner side of this bifurcated inclined portion can be used as a guide portion of a tool such as a socket wrench. As a result, fastening members such as bolts that are attached to the vehicle body attachment points of the attachment flange can be easily fixed, so that the workability of attaching the adjust rail can be improved.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 4 show a shoulder adjuster structure to which the present invention is applied, FIG. 1 is a perspective view of an end portion of an adjust rail, FIG. 2 is a front view of an end portion of an adjust rail, and FIG.
FIG. 4 is a plan view of an end portion of the adjust rail, and FIG. 4 is a front view of the end portion of the adjust rail showing an operating state when a pressing load is input.

The shoulder adjuster structure of the present invention is
Similar to the conventional three-point seat belt device, the case where the seat belt is used for restraining the shoulder portion is shown as an example. For example, for the front seat, the center pillar is provided as in the conventional case.

FIG. 1 shows an end portion of an adjust rail 10 used in the shoulder adjuster structure of this embodiment. The adjust rail 10 has a channel-shaped slide rail portion 11 for movably locking a through anchor (not shown). , And a mounting portion 12 provided at an end portion of the slide rail portion 11.

The mounting portion 12 is a slide rail portion 11.
Is integrally projected from the end of the bottom surface 11a of the
It is composed of a leg portion 13 having a predetermined width and a mounting flange 14 in which a bolt insertion hole 14a as a vehicle body mounting point is formed.

As shown in FIG. 2, the leg portion 13 is provided with a predetermined space S between the slide rail portion 11 and the center pillar 20 as a vehicle body (inner panel). After extending a predetermined amount from the end of 11, the projection is provided so as to be inclined toward the center pillar 20, and a mounting flange 14 is provided at the tip of the leg 13 thereof.

The mounting flange 14 is formed by cutting and raising the widthwise central portion of the leg portion 13 and forming the cut and raised piece 13a toward the arrangement side of the slide rail portion 11 and inserting the bolt into the cut and raised piece 13a. The hole 14a is formed. A mounting bolt penetrating the center pillar 20 is inserted into the bolt insertion hole 14a as in the conventional case, and is fastened and fixed by a nut.

At this time, both sides of the leg portion 13 after cutting and raising the cut-and-raised piece 13a are bifurcated, and in this embodiment, as shown in FIG. 3, the inclined portion 13b formed in the bifurcated shape. The inside is formed in a substantially semicircular shape.

The tip portions of the inclined portions 13b are connected by a connecting surface 13c forming a part of the mounting flange 14, and the leg portions 13 are predetermined from a boundary portion A between the connecting surface 13c and the inclined portion 13b. It is bent at an angle and stands up. Of course, the cut-and-raised piece 13a and the connecting surface 13c are formed of the same continuous surface, and the center pillar 20
Is formed along the mounting surface of.

On the other hand, as shown in FIG. 2, the leg portion 13 is provided with an extending portion 13d extending in the length direction (same direction) from the bottom surface 11a at the boundary portion C of the end portion of the slide rail portion 11. The leg portion 13 is bent at a predetermined angle from the boundary portion B between the extended portion 13d and the inclined portion 13b, and the inclined portion 13 is inclined toward the center pillar 20 (downward in the figure).
It continues to b.

Therefore, as shown in FIG. 4, when a pressing load F from the inside of the vehicle is applied to the slide rail portion 11, the slide rail portion is deformed as shown by the broken line in the figure, as indicated by the broken line. 11 is pushed into the center pillar 20 side.

At this time, the leg portion 13 is deformed in a direction in which the angle of the boundary portion A is decreased, and at the same time, the boundary portion B is deformed.
Is deformed in the direction in which the amount of mountain folds increases, and the boundary C with the slide rail portion 11 is also valley folds.

Further, in the present embodiment, the portion where the leg portion 13 is connected to the slide rail portion 11, that is, the boundary portion C.
A narrowed portion 15 that is narrower than the slide rail portion 11 is provided at the portion.

According to the structure of the above embodiment, the mounting flange 14 of the mounting portion 12 for mounting the adjust rail 10 on the center pillar 20 is provided so as to project from the end portion of the slide rail portion 11 toward the center pillar 20. Cut and raise a part of the leg portion 13 to be cut, and the cut and raised piece 1
Since 3a is formed toward the arrangement side of the slide rail portion 11, the bolt insertion hole 14 provided in the cut and raised piece 13a is formed.
As shown in FIG. 2, a is provided at a position that is a distance c from the tip of the leg 13 (this tip corresponds to the boundary A) to the side where the slide rail 11 is arranged.

Therefore, the distance L1 from the end of the slide rail portion 11 to the bolt insertion hole 14a is a length obtained by subtracting the distance c from the protrusion distance a of the leg portion 13 (L1 = a-
c), and when the protrusion amount of the leg portion 13 is the same as the conventional one, the bolt insertion hole 14a is formed at the slide rail by the length of the sum of the distance b shown in FIG. 10 and the distance c. It will enter (overlap) the part 11 side.

Therefore, the span between the bolt insertion holes 14a of the adjusting rail 10 is shortened, and the mounting space for the adjusting rail 10 can be reduced accordingly, and the degree of freedom in layout when fixing the adjusting rail 10 to the center pillar 20 is increased. Can be expanded.

Further, since the span between the bolt insertion holes 14a is shortened, it is possible to secure a sufficient adjustment allowance and to adjust the adjustment rail 10 even when the adjustment rail 10 is arranged in a limited mounting space. Rail 10
When the mounting space for the seat belt is the same as the conventional one, the effective length M of the slide rail portion 11 (see FIG. 2) can be increased, and the adjustment allowance of the through anchor can be set longer. It will be possible to accommodate a wider range of physical differences of the wearer.

Moreover, the leg portion 13 has the slide rail portion 11
Since a predetermined distance S is provided between the slide rail portion 11 and the center pillar 20 by being inclined and projected from the center pillar 20 toward the center pillar 20, an occupant can slide on the slide rail portion due to a side collision or the like. When the slide rail portion 11 is pushed in with the deformation of the leg portions 13 when the pressure load of a predetermined amount or more is applied by interfering with 11, the impact energy due to the interference is absorbed and the cushioning function is exerted. Therefore, the occupant can be protected.

Further, particularly according to this embodiment, the leg portion 13 is provided with the extending portion 13d extending from the slide rail portion 11 in the length direction of the slide rail portion 11, and the extending portion 13d. It is formed by an inclined portion 13b inclined toward the center pillar 20 and a mounting flange 14 (connecting surface 13c) formed by cutting and raising the tip portion following the inclined portion 13b. 13d
A boundary portion C between the extended portion 13d and the inclined portion 13b, and a connecting surface 13 between the inclined portion 13b and the mounting flange 14.
When the pressing force F acting on the slide rail portion 11 from the inside of the vehicle at a predetermined level or more acts on three portions of the boundary portion A with c,
Since it is bent and deformed, when the occupant interferes due to a side collision or the like and the pressing load F acts on the slide rail portion 11, the leg portion 13 has the three boundary portions A, B, C described above.
However, by appropriately mountain-folding and valley-folding with the inclined portion 13b sandwiched therebetween, the slide rail portion 11 is easily pushed in without the legs 13 being stretched, and the shock energy absorption performance is enhanced to improve the cushioning function. be able to.

That is, as shown in FIG. 5, for example, even if the conventional structure is applied and only the mounting pitch of the adjust rail 10 is shortened, the leg portions 13 are necessarily shortened, so that three boundary portions are provided. Unable to, leg 1
3 may be stretched when the slide rail portion 11 is pushed in, and the desired impact energy absorption efficiency cannot be obtained.

Further, the slide rail portion 1 is provided on the leg portion 13.
Since the constricted portion 15 is provided in the portion connected to 1 (the portion corresponding to the boundary portion C), a large tensile load acts on the seat belt, and this is input to the slide rail portion 11 via the through anchor. In this case, the input can be absorbed by concentrating the pressing force on the necked portion 15 and positively twisting and deforming the necked portion 15.

Further, in this embodiment, the leg portion 13 is formed with the inclined portion 13b in a bifurcated shape when the cut-and-raised piece 13a is formed. The inside of the bifurcated inclined portion 13b is formed in a substantially semicircular shape. Since it was formed on the
The semicircular bifurcated inclined portion 13b can be used as a guide portion for the tool T such as a socket wrench. Therefore, the mounting bolts that are inserted into the bolt insertion holes 14a of the mounting flange 14 can be easily tightened, and the workability of mounting the adjustment rail 10 can be improved.

The leg portion 13 of this embodiment is formed with a cut-and-raised piece 13a at the center in the width direction to form an inclined portion 13B.
It is shown that the fork is formed in a bifurcated shape.
It is also possible to form the cut-and-raised piece 13a on one side in the width direction of the leg portion 13 without forming b into a bifurcated shape.

[Brief description of drawings]

FIG. 1 is a perspective view of an end portion of an adjust rail showing an embodiment of the present invention.

FIG. 2 is a front view of the end portion of the adjust rail showing the embodiment of the present invention.

FIG. 3 is a plan view of an end portion of the adjust rail showing the embodiment of the present invention.

FIG. 4 is a front view of an end portion showing an operating state when a pressing load is input to the adjust rail according to the embodiment of the present invention.

FIG. 5 is a front view of an end portion showing a leg portion when a conventional structure is used.

FIG. 6 is a perspective view of essential parts showing a through anchor attachment state of a conventional structure.

7 is a cross-sectional view taken along the line AA in FIG.

FIG. 8 is an enlarged cross-sectional view of an essential part showing a mounting state of an adjust rail having a conventional structure.

FIG. 9 is a perspective view of an end portion of a conventional adjust rail.

FIG. 10 is a front view of an end portion of an adjust rail having a conventional structure.

[Explanation of symbols]

10 Adjust rail 11 Slide rail section 12 Mounting part 13 legs 13a Cut and raised piece 13b slope 13d extension part 14 Mounting flange 14a Bolt insertion hole (car body mounting point) 15 constriction 20 Center pillar (car body (inner panel)) A, B, C boundary

Claims (4)

[Claims] 1. An adjuster rail for movably locking a through anchor supporting a seat belt, the adjuster rail being mounted on both ends of a slide rail part from an inner side of a vehicle interior to a vehicle body inner side. A shoulder adjuster structure fixed to a panel, wherein the mounting portion is a leg that is inclined from the slide rail portion toward the inner panel so as to provide a predetermined gap between the slide rail portion and the vehicle body. And a mounting flange provided in the vicinity of the tip of the leg portion. The mounting flange is formed by forming a cut-and-raised piece obtained by cutting and raising a part of the leg portion toward the arrangement side of the slide rail portion. A shoulder adjuster structure characterized by a body mounting point on the cut and raised piece. 2. The extension part extending from the slide rail part in the length direction of the slide rail part, the inclined part which is inclined toward the inner panel following the extension part, and the inclination part. And the mounting flange formed by cutting and raising the tip of the slide rail, and the boundary between the slide rail and the extension, the boundary between the extension and the slope, and the slope and the mounting flange. The shoulder adjuster structure according to claim 1, wherein at least three portions of a boundary portion between the shoulder adjuster structure and the slide rail portion are bent and deformed by a pressing force applied from a vehicle interior side to a predetermined amount or more. 3. The shoulder adjuster structure according to claim 1, wherein the leg portion is provided with a constricted portion at a portion connected to the slide rail portion. 4. The cut-and-raised piece is formed inward in the width direction of the leg so that the inclined portion is formed in a bifurcated shape on both sides of the leg, and the inside of the bifurcated inclined portion is substantially half. The shoulder adjuster structure according to claim 1, wherein the shoulder adjuster structure is formed in a circular shape.