JP3489160B2 - Car seat belt anchor arrangement structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seatbelt anchor arrangement structure for an automobile, and more particularly to a seatbelt anchor arrangement structure attached to a vehicle body pillar.

[0002]

2. Description of the Related Art Conventionally, a seat belt is generally widely used as one of means for protecting an occupant when an automobile collides. As is well known, this seat belt restrains an occupant to a seat when a collision occurs, and restrains the seated occupant's upper body by the waist and / or shoulders to prevent the occupant's body from colliding during a vehicle collision. The forward movement can be regulated and the occupants can be effectively protected.

However, when the vehicle collides head-on and a forward inertial force acts on the occupant's body, the seat belt is very effectively restrained by protecting the occupant's upper body. However, when the vehicle receives a collision load from the side, it is not always possible to effectively restrain the upper body of the occupant. Even in the case of a head-on collision, the upper body of the occupant may behave in a secondary manner, for example, in the lateral direction after the forward movement of the occupant is once stopped by the seat belt. It is difficult to effectively restrain the body. As one countermeasure against the lateral behavior of the upper body of the occupant at the time of such a collision, for example, in Japanese Unexamined Patent Publication No. 4-78749, an airbag device that can be deployed toward the vehicle interior at the side of the vehicle body at the time of the collision. Those provided with are disclosed.

[0004]

By the way, in the seat belt, an anchor having an intermediate portion attached to the vehicle body is used.
Some are configured to be supported by (seat belt anchors). For example, taking the case of a shoulder-mounted seat belt attached to the front seat as an example,
The seatbelt anchor is usually attached to a relatively upper part of a vehicle body pillar on the side of the seat, and for example, a seatbelt extending from a retractor arranged on a relatively lower part or on the floor along the vehicle body pillar is a vehicle body. It rises upward along the pillars, the intermediate part of which is hung around the seat belt anchor to change its direction, and then extends from diagonally above the seat back to the seat side.
The seat belt anchor is generally attached to the inner panel of the vehicle body pillar through an anchor bolt,
The anchor bolt and the seatbelt anchor must have rigidity of a certain level or higher in terms of their functions. Particularly, since the anchor bolt firmly supports the seat belt anchor and receives the belt load at the time of collision, it is usually made of steel and has high rigidity.

However, since the anchor bolts and the seat belt anchors are attached to a relatively upper portion of the vehicle body pillar and are usually provided so as to protrude to some extent from the inner panel of the vehicle body pillar toward the vehicle compartment, As described above, when the upper body of the occupant moves laterally during a vehicle collision, the occupant's body, particularly the head, may collide with the seatbelt anchor mounting portion. Therefore, the seat belt anchor mounting part is subject to impacts when the passenger head collides.
It is desired to reduce (so-called head impact) as much as possible to further enhance the safety of passengers in the event of a vehicle collision.

Therefore, an object of the present invention is to provide a vehicle seatbelt anchor arrangement structure capable of reducing the head impact by devising a structure for mounting the seatbelt anchor and the anchor bolt to the vehicle body pillar. To do.

[0007]

Therefore, according to the first invention of the present application, a seatbelt anchor is attached to a vehicle body pillar, and an anchor bolt for attaching the seatbelt anchor to the vehicle body pillar is an inner panel of the vehicle body pillar. In the seatbelt anchor arrangement structure of an automobile, which protrudes from the vehicle cabin side by a predetermined amount, the portion near the anchor bolt of the trim member that covers the vehicle body side of the inner panel of the vehicle body pillar is at least closer than the anchor bolt. The cushioning material is provided so as to be projected toward the passenger compartment and the cushioning material is disposed in the projecting portion of the trim member.

Further, a second invention of the present application is characterized in that, in the first invention, the protrusions are provided on both sides of the anchor bolt.

[0009]

[0010]

[0011]

[0012]

According to the first invention of the present application, a portion near the anchor bolt of the trim member is made to project at least toward the passenger compartment side from the anchor bolt, and a cushioning material is arranged in the projecting portion of the trim member. Since the upper body of the occupant behaves laterally in the event of a vehicle collision and the occupant's body, especially the head, collides with the seatbelt anchor attachment part, cushioning material is applied to the occupant's head. Only by colliding with the above-mentioned protruding portion arranged inside, it is not possible to collide directly with the anchor bolts, and it is possible to greatly reduce the head impact on the occupant's head, and the safety of the occupant during a vehicle collision. Can be increased.

Further, according to the second invention of the present application, basically, the same effect as that of the first invention can be obtained. Moreover, since the protrusions are provided on both sides of the anchor bolt, the head of the occupant is more reliably received by the protrusions, and the head is more likely to directly collide with the anchor bolt. Can be prevented.

[0014]

[0015]

[0016]

[0017]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a seat belt device attached to a front seat of an automobile according to an embodiment of the present invention. As shown in this figure, the seat belt 2 according to the present embodiment is a so-called three-point seat belt for shoulder mounting, and the seat belt 2 extends obliquely downward from the shoulder portion of an occupant (not shown) seated on the front seat 1. A tongue plate 3 is attached in the middle of the belt, and a belt portion above the tongue plate 3 acts as a shoulder belt portion 2a for restraining a relatively upper portion (shoulder portion) of the upper body of the occupant, and a belt below the tongue plate 3 The portion acts as a so-called waist belt portion 2b for restraining a relatively lower portion (waist portion) of the upper body of the occupant. A terminal portion of the waist belt portion 2b is fixed to a side (right side) of the seat 1 or a floor panel (not shown). on the other hand,
On the left side of the seat cushion 1a of the front seat 1, a belt buckle 4 that is connected to the tongue plate 3 at the time of use is attached.

A center pillar 10 is located on the right side and slightly behind the front seat 1. The retractor 5 of the seat belt 2 is disposed relatively below or on the floor along the center pillar 10, and the seat belt 2 extending from the retractor 5 rises upward along the center pillar 10 and The midway portion is hung around the seat belt anchor 6 to change its direction, and then extends from the diagonally upper rear side of the seat back 1b of the front seat 1 to the seat 1 side. The seatbelt anchor 6 is attached to the center pillar 10 and has a certain rigidity or more so as to withstand the belt load at the time of collision.

Next, the structure of the mounting portion of the seat belt anchor 6 will be described. As shown in FIG. 2, an inner panel 10a (center pillar inner) and an outer panel 10b.
Pillar trims 11 and 12 that are vertically divided are provided on the vehicle interior side of the center pillar 10 that has a closed cross-section with the (center pillar outer). Further, as can be seen clearly from FIG. 3, a mounting plate 1 as an attachment member for attaching the anchor 6 to the center pillar inner 10a is provided outside the seat belt anchor 6.
3 are arranged, and the mounting plate 13 is integrally provided with a pair of rails 14 extending in the longitudinal direction thereof. The rails 14, 14 include the rails 14,
A slider 15 that slides on 14 is attached, and a steel anchor bolt 16 that attaches the seatbelt anchor 6 is integrally provided on the slider 15.
Although not specifically shown, the mounting plate 13 is vertically extended to form the center pillar inner 1
0a is provided, and the mounting plate 13 is fastened and fixed to the center pillar inner 10a by this mounting portion. That is, the seat belt anchor 6 includes the anchor bolt 16, the slider 15, and the rails 14, 14 (in other words, the mounting plate 1).
It is attached to the center pillar inner 10a via 3). The anchor bolt 16 firmly supports the seat belt anchor 6 and receives the belt load in the event of a collision, and has particularly high rigidity. Further, since the anchor bolt 16 is located closer to the passenger compartment than the mounting plate 13, the anchor bolt 16 projects considerably toward the passenger compartment from the center pillar inner 10a.

In the present embodiment, more preferably, an adjusting mechanism is provided so that the vertical position of the seat belt anchor 6 can be adjusted according to the physique of an occupant seated on the front seat 1. That is, the seatbelt anchor 6 is provided with a push button type button portion 6b that can move up and down with respect to the main body of the seatbelt anchor 6 and the support plate 6a that supports the main body and is fixed to the anchor bolts 16.
Although not specifically shown, is connected to a lock lever 17 capable of engaging with a groove portion 14a formed in each rail 14 via a cam mechanism, for example. In the normal state when the button portion 6b is not pushed, the slider 15 is fixed at that position because the lock lever 17 maintains the engagement relationship with the rails 14 and 14.
As indicated by a white arrow in FIG. 1, the lock lever 17 is driven outward by pushing the button portion 6b, and the lock lever 17 and the groove portion 14 of each rail 14 are driven.
The engagement with a is released. Then, the slider 15 is slid up and down along the rails 14 and 14 to adjust the vertical position of the seatbelt anchor 6, and the button portion 6b is released at the desired adjustment position to stop the pushing operation, whereby the lock lever is again released. 17 engages with the groove 14a of each rail 14 so that the slider 15 is fixed at that position. Since the adjusting mechanism is the same as a well-known one, the detailed description and illustration thereof will be omitted.

By the way, in this embodiment, even when the vehicle receives a collision load from the side or in the case of a head-on collision, the upper body of the occupant is temporarily stopped by the seat belt 2 and then the secondary behavior is caused. When the upper body of the occupant laterally behaves during a vehicle collision such as when performing a vehicle collision, the so-called head impact received when the occupant's body, particularly the head, collides with the attachment portion of the seatbelt anchor 6 is reduced as much as possible. For this reason, the pillar trim upper 11 is provided with a protrusion that receives the occupant's head. That is, the pillar trim upper 11
A recessed groove portion 11a is formed on the outside of the vehicle body and extends in the vertical direction. The anchor bolt 16 and the seat belt anchor 6 are located in the groove portion 11a. In other words, the anchor bolts 16 of the pillar trim upper 11 and both side portions of the seat belt anchor 6 have the groove portions 11a.
A protruding portion 11b that relatively protrudes toward the passenger compartment is formed. The protrusion 11b of the pillar trim upper 11,
The protrusion height of the groove 11a from the groove portion 11a is set so as to protrude at least from the anchor bolt 16 and more preferably from the seat belt anchor 6 toward the passenger compartment. Then, as shown in FIG. 4, the protrusions 11b, 1
Inside 1b, a cushioning material 1 made of, for example, a urethane pad
9 is packed.

Therefore, even when the upper body of the occupant behaves laterally during a vehicle collision, and the occupant's body, especially the head H, collides with the seatbelt anchor mounting portion, the occupant's head H is cushioned by the cushioning material 1.
Only 9 collides with the projecting portions 11b, 11b of the pillar trim upper 11 arranged therein, and does not directly collide with the seat belt anchor 6 and the anchor bolt 16 having particularly high rigidity. That is, the head impact on the occupant's head H can be significantly reduced, and the safety of the occupant in a vehicle collision can be further enhanced. Further, since the protrusions 11b, 11b are provided on both sides of the seatbelt anchor 6 and the anchor bolt 16, the head H of the occupant is reliably received and the head H directly contacts the seatbelt anchor 6 and the anchor bolt 16. It is possible to more reliably prevent the vehicle from colliding with.

[0023] The above examples are passenger's head H was obtained by so as to prevent collision directly to the seat belt anchor 6 and an anchor bolt 16, instead of this,
Even if there is a direct collision, the impact load may be absorbed. The following describes Reference Example <br/> real 施例of the present invention. In the following description, the same components as those in the above embodiment are designated by the same reference numerals, and further description will be omitted. FIG. 5 is a perspective view showing the arrangement structure of the seatbelt anchor 6 according to the present reference example. As shown in this drawing, a mounting for mounting the seatbelt anchor 6 to the center pillar inner 20a (see FIG. 6). The plate 23 has a vertically extending mounting end 23a,
23b is formed, and the mounting plate 23
Is fastened and fixed to the center pillar inner 20a at the mounting ends 23a and 23b.

In the present reference example, the center pillar inner 20 a includes the body portion 23 c of the mounting plate 23.
Is cut out, and the main body portion 23c is cut into the inner panel 20a and the outer panel 20b of the center pillar 20.
It can be housed in the closed cross section space 20c formed by the above, and the upper and lower mounting ends 23a and 23b of the mounting plate 23 are also located in the closed cross section space 20c. Further, in this reference example, the mounting plate 23 is deformed outward at the upper and lower mounting ends 23a, 23b in the closed cross sectional space of the center pillar 20 when a lateral load is applied from the vehicle interior side to the outside. And the anchor bolt 16
The seatbelt anchor 6 is configured to be movable toward the closed cross section space 20c of the center pillar 20 under the action of a lateral load from the vehicle interior side to the outside.

The mounting structure of the mounting plate 23 to the center pillar inner 20a will be described below by taking the upper mounting end 23a as an example. As shown in FIG. 6, a fixing plate 24 formed of a relatively thick steel plate is provided at a portion of the center pillar inner 20a where the mounting end portion 23a is fixed, on the back side thereof (that is, when the center pillar inner 20a is closed). Mounting bracket 2 that is joined to the cross-sectional space 20c side) and is made of a relatively thin steel plate outside the fixing plate 24
5 are arranged. The fixing plate 24 is provided with a supporting portion 24a projecting outward at the outer edge portion thereof, while the mounting bracket 25 is formed in a concave shape having a collar portion 25b, and the vicinity of the outer periphery of the collar portion 25b is the supporting portion. It is joined and supported by the portion 24a.

The mounting end 23a of the mounting plate 23 has a central recess 2 of the mounting bracket 25.
It is attached to the inside of 5a. A reinforcing plate 26 formed of a relatively thick steel plate is arranged outside the central recess 25a, and the mounting end 23a of the mounting plate 23 and the central recess 25a of the mounting bracket 25 are arranged in order from the inside. With the reinforcing plate 26 arranged side by side, these three members are fastened and fixed to each other by a mounting bolt 27 and a nut 28. In addition, as for the lower mounting end 23b of the mounting plate 23,
It is attached to the center pillar inner 20a with the same structure as the case of the upper attachment end 23a.

In the above structure, when the upper body of the occupant moves laterally at the time of a vehicle collision and the occupant's body, particularly the head H, collides with the seatbelt anchor 6, the seatbelt anchor 6 and its attachment. A lateral load acting from the vehicle interior side to the outside is applied to the portion, and the lateral load is transmitted to the upper and lower mounting end portions 23a and 23b of the mounting plate 23.
Taking the upper side as an example, the mounting end portions 23a and 23b are mounted in the central recess 25a of the mounting bracket 25 formed of a relatively thin steel plate as described above, and the mounting bracket 25 is located in the vicinity of its outer periphery. Is only joined to and supported by the support portion 24a of the fixed plate 24, so that when a lateral load from the vehicle interior side to the outside is input via the mounting end portion 23a, comparison is made according to the input load. It is easily deformed outward in the closed cross section space 20c. That is,
The mounting end portion 23a moves outward in the closed cross-section space 20c with the input of the lateral load. As a result, the mounting plate 23 moves outward as a whole because the upper and lower mounting end portions 23a and 23b thereof move outward. Therefore, the anchor bolt 16 attached to the mounting plate 23 is
The seat belt anchor 6 can move toward the closed cross section space 20c of the center pillar 20 under the action of the lateral load.

On the other hand, when a belt load (tensile load) acts on the seat belt anchor 6 and the anchor bolt 16 at the time of a vehicle collision, the mounting plate 23 is pulled toward the passenger compartment, and accordingly Mounting end 23a, 23
A tensile load on the vehicle compartment side also acts on b, but in this case, since the relatively thick reinforcing plate 26 comes into contact with the relatively thick fixing plate 24 and is pressed,
The belt load is not easily deformed, and the upper and lower mounting ends 23a and 23b can sufficiently receive the belt load.

As described above, according to this reference example, the mounting plate 23 has the center pillar 2
Since the mounting plate 23 and the center pillar inner 20a are connected to each other through the mounting bracket 25, the mounting plate 23 and the center pillar inner 20a are connected to each other.
When a lateral load is applied from the inside of the vehicle to the outside,
By deforming the mounting bracket 25 toward the outside, the anchor bolt 16 and the seatbelt anchor 6 attached to the mounting plate 23 can be moved from the vehicle interior side to the outside. Therefore, the upper body of the occupant behaves laterally during a vehicle collision, and when the body of the occupant, particularly the head H, collides with the seat belt anchor 6, the impact received by the occupant's head H may be absorbed. it can. In other words, the head impact on the occupant's head H can be significantly reduced, and the safety of the occupant at the time of a vehicle collision can be further enhanced.

In addition, since the reinforcing plate 26 is attached to the mounting bracket 25, the anchor bolt 16 can be used in the event of a vehicle collision.
When a belt load (tensile load) is applied to the seatbelt anchor 6, it can be received by the reinforcing plate 26. That is, it is possible to reduce the head impact on the occupant's head H while ensuring the necessary belt load load capacity.

Although the above-mentioned embodiments and reference examples are all about the seatbelt anchor 6 provided with the adjusting mechanism, the present invention is not limited to the fixed seatbelt anchor. Of course, in the case of this fixed type, the entire seat belt anchor may be covered with the pillar trim except for the seat belt withdrawal portion.

[Brief description of drawings]

1 is a perspective view of a seat belt is attached to the front seat of an automobile according to the actual施例of the present invention.

FIG. 2 is a perspective view of a seat belt anchor attachment portion according to the above embodiment.

3 is a vertical cross-sectional explanatory view taken along the line AA of FIG.

4 is a cross-sectional explanatory view taken along the line BB of FIG.

5 is a perspective view of a seat belt anchor and the mounting plate according to a reference example of the real施例of the present invention.

FIG. 6 is an explanatory cross-sectional view showing a mounting structure at an upper mounting end portion of the mounting plate.

[Explanation of symbols]

2 ... seat belt 6 ... Seat belt anchor 10, 20 ... Center pillar 10a, 20a ... Center pillar inner 11 ... Pillar trim upper 11b ... projection 16 ... Anchor bolt 19 ... Cushioning material

Claims (2)

(57) [Claims] 1. A vehicle body having a seatbelt anchor attached to a vehicle body pillar, wherein an anchor bolt for attaching the seatbelt anchor to the vehicle body pillar projects a predetermined amount from an inner panel of the vehicle body pillar toward a passenger compartment. In the seatbelt anchor arrangement structure, a portion near the anchor bolt of the trim member that covers the inner side of the inner panel of the vehicle body pillar is made to project at least to the vehicle side with respect to the anchor bolt, and inside the protruding portion of the trim member. A seatbelt anchor arrangement structure for an automobile, characterized in that a cushioning material is provided. 2. The seatbelt anchor arrangement structure for an automobile according to claim 1, wherein the protrusions are provided on both sides of the anchor bolt.