JPH0719929Y2 - Vehicle seat belt retractor mounting structure - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Use) The present invention relates to a vehicle seatbelt retractor mounting structure, and more specifically, a seatbelt retractor applied to a rear door of a 4-door center pillarless hardtop vehicle. Regarding mounting structure.

(Prior Art) Generally, in the case of a four-door vehicle, the front door opening and the rear door opening are partitioned by a center pillar, and a seat belt retractor for a front seat is sufficiently resistant to an impact load applied in an emergency. As described above, it is fixed to the lower portion (door strut portion) of the center pillar of the vehicle body, which is relatively strong (see, for example, Japanese Utility Model Laid-Open No. 61-85553). Then, the seat belt from the seat belt retractor is pulled out to the front side of the front seat via the guide member fixed to the middle part of the center pillar, and the mooring portion provided at the pulling end has a floor side edge portion. Is moored to.

In such a case, in order to prevent the increase in the number of parts and to improve the seat belt retractor mounting support rigidity, it is proposed to mount the seat belt retractor on the reinforcement member of the striker mounted on the door strut portion. (See Japanese Utility Model Publication No. 59-91967).

On the other hand, in a four-door center pillar-less vehicle, the upper half pillar portion is omitted except for the lower half pillars of the door, and the guide member cannot be provided on the center pillar. A guide member is attached to the.

(Problems to be solved by the invention) However, when the guide member is attached to the roof portion in this way, the seat belt extending upward from the lower seat belt retractor extends to the guide member of the roof portion, and this guide member is used. After it is folded back, it is stretched downward from the roof again, so the seat belt at that part impairs the feeling of openness from the passenger compartment, which is peculiar to hard-top cars, and lacks the sophistication in appearance. is there.

In order to solve such a problem, it can be considered that the guide member is attached to the shoulder portion of the seat back so that the seat belt does not extend to the roof portion. However, if the seat belt retractor is left attached to the door pillar that is the lower part of the center pillar, the seat belt coming out of the seat belt retractor is sharply bent by the above-mentioned shoulder guide member. Depending on the front / rear position of the front seat, the seat belt may not be properly hooked, so that the front seat may not fit the body of the occupant, or the occupant may feel cramped.

Therefore, in the case of a four-door center pillarless vehicle, it is conceivable to install the seat belt retractor on the rear door side. However, the strength of the inner panel itself of the rear door is not sufficient with respect to the load acting on the seat belt retractor, and there is a problem in terms of supporting rigidity of the seat belt retractor.

Moreover, if the seatbelt retractor mounting position is changed from the door strut portion to the rear door, the rear door is rotated while the door strut portion is stationary with respect to the vehicle body. If the rear door is opened or closed while the seat belt is being worn, the seat belt retractor moves with the rear door and the length of the seat belt to the occupant changes relatively, so that the occupant pulls the seat belt through the seat belt. There is a risk that the variation in force will be noticed and the wearing feeling will be impaired. Moreover, at this time, the above-mentioned feeling of wearing may be further deteriorated due to friction acting between the seat belt retractor and the guide member of the shoulder portion of the front seat and a rear door constituent member or the like when the seat belt relatively moves. There is.

The present invention has been made in view of such circumstances,
The purpose thereof is to secure sufficient mounting support rigidity while preventing deterioration of a seatbelt wearing feeling of a front seat occupant when mounting a seatbelt retractor for a front seat to a rear door.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a vehicle body having a rear door having an outer panel, an inner panel, and a door trim attached to the inner panel, and a front end portion of the vehicle body via a door hinge member. It is assumed that the seat belt retractor for the front seat is mounted rotatably around a vertical axis on the rear door between the inner panel of the rear door and the door trim. In this structure, an inner wall portion on the door trim side and a front end portion bent from the front end of the inner wall portion to the outer panel side are formed at the front end portion of the inner panel of the rear door. Further, a reinforcing member for supporting the door hinge member is disposed between the front end portions of the inner panel and the outer panel, and the reinforcing member is provided at the corner portion formed by the inner wall portion and the front wall portion of the inner panel. The second wall is formed so as to have a first wall portion joined to the inner wall portion and a second wall portion formed integrally with the first wall portion and joined to the front wall portion of the inner panel. A mounting seat for the door hinge member is formed in the portion. Then, while the seat belt retractor is integrally supported by the first wall portion of the reinforcing member and the inner wall portion of the inner panel, a front end that is an upper edge of the door trim and is in the vicinity of the rotation axis of the door hinge member. At the part position, there is formed a pull-out opening that opens into the vehicle compartment and pulls out the seat belt from the seat belt retractor into the vehicle compartment.

(Operation) In the above configuration, the seat belt retractor and the outlet for pulling the seat belt from now on into the vehicle compartment are both
The seat belt relative to the occupant of the front seat from the seat belt retractor caused by the opening and closing of the rear door, because it is arranged on the front end side of the rear door that is in the vicinity of the rotary shaft position of the door hinge part of the rear door. The movement is suppressed as small as possible, whereby the change in the seatbelt wearing feeling that the occupant feels as the opening and closing of the rear door becomes as small as possible, and the deterioration of the seatbelt wearing feeling can be prevented. At this time, since the seat belt from the seat belt retractor is bent once at the outlet and extends to the front seat, the seat belt retractor is attached to the lower part of the door strut so that the seat belt is not attached to the front seat. Compared to the case where it is bent sharply at the shoulder position, the friction generated when the seat belt moves is reduced and the flow of the seat belt becomes smoother.As a result, the deterioration of the mounting part due to the increase in the above friction is prevented more reliably. Planned for.

In addition, the seat belt retractor is integrally attached to both the reinforcing member to which the door hinge that supports the heavy rear door is attached and the inner panel. Supporting rigidity is obtained. Moreover, at this time, a corner portion is formed by the inner wall portion and the front wall portion at the front end portion of the inner panel of the rear door, and the front wall portion and the inner wall portion forming the corner portion are the first wall portion of the reinforcing member. And the second wall portion are joined to and integrated with each other, the front end portion of the rear door to which the seat belt retractor is attached is reinforced more highly, and higher attachment support rigidity is obtained. As a result, the impact load that acts on the seat belt retractor in an emergency is sufficiently supported.

Therefore, even when the seat belt retractor is attached to the rear door instead of the conventional center pillar, sufficient mounting support rigidity is ensured while preventing the front seat occupant from feeling uncomfortable when the rear door is opened and closed. It

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

In this embodiment, the vehicle seat belt retractor mounting structure of the present invention is applied to a 4-door center pillarless hardtop vehicle, and a seat belt retractor for a front seat can be mounted on a rear door. Is. That is, as shown in FIG. 4, the seat belt retractor 5 is attached to the inner surface side of the door trim 4 of the rear door.
The seat belt 18 is pulled out into the vehicle compartment from the pull-out port 17 formed in the door trim 4, then guided by the guide member 20 attached to the front seat 19 and extended to the front side of the front seat 19. There is.

As shown in the front end portion of the rear door 1 according to the first embodiment in FIG. 1, the rear door 1 includes an inner panel 2, an outer panel 3, and a front panel 11 for connecting the two and 3, respectively.
A door trim 4 mounted on the surface of the inner panel 2 on the vehicle interior side is provided, and the seat belt retractor 5 is arranged between the door trim 4 and the inner panel 2.

The inner panel 2 includes a flat plate-like inner wall portion 6 facing the vehicle interior side, and a front wall portion 7 that is bent outward from the front end of the inner wall portion 6 at a substantially right angle in the vehicle width direction and protrudes toward the outer panel 3 side. Is integrally formed, and the inner wall portion 6 and the front wall portion 7 form a corner portion 8 at the front end portion of the inner panel 2. In the inner panel 2, at the corner portion 8, the inner wall portion 6 is joined to a later-described first wall portion 9 of the front panel 11, while the front wall portion 7 is described later of the front panel 11. It is joined to the second wall portion 10, and this front panel 11 constitutes the reinforcing member of the present invention.

The front panel 11 constitutes the front end surface of the rear door 1, and the first wall portion 9 extends rearward along the inner surface of the inner wall portion 6 of the inner panel 2 and the front end side of the first wall portion 9. The front wall portion 7 of the inner panel 2 bent from the position
And a second wall portion 10 that extends outward in the vehicle width direction along the rear surface of the vehicle. The corner portion formed by the first wall portion 9 and the second wall portion 10 has a closed cross section 14 having a triangular shape in a plan view between the corner portion 8 of the inner panel 2 and the corner portion 8. An oblique wall portion 10c is formed which is bent obliquely outward from the front end of the one wall portion 9 and continues to the inner end of the second wall portion 10. Then, a door hinge support portion 10a is formed by bending the outer edge of the second wall portion 10 in a U shape, and further extends straight forward, and a front edge portion of the outer panel 3 in which the front edge is bent back. It is sandwiched and fixed by.

As shown in FIG. 2, the second wall portion 10 has door hinge support portions 10a, 10a as mounting seats for supporting the door hinge member.
A door checker support portion 10b that supports a and the door checker member is formed. Then, door hinge members (not shown) are attached to the above-mentioned two upper and lower door hinge support portions 10a, 10a, respectively, so that the rear door 1 can be opened and closed by rotating the rear door 1 around a vertical axis of rotation with respect to the vehicle body. Installed. That is, the rear door 1 is adapted to rotate around its front end.

The front panel 11 is formed of a relatively thick plate material (see FIG. 1) and serves as a member for connecting the inner panel 2 and the outer panel 3 and as a supporting member for the door hinge member and the door checker member. Has sufficient strength.

The seat belt retractor 5 is shown in FIGS.
As shown in the drawing, a bolt 12 and a nut 13 which are inserted and fastened into mounting holes 15 and 16 formed in the lower portion of the front end portion of the inner wall portion 6 of the inner panel 2 and the first wall portion 9 of the front panel 11. Thus, it is arranged inside the inner panel 2 and the front panel 11 integrally with the inner panel 2 (see FIG. 3). That is, the seat belt retractor 5 is attached to the front panel 11 that supports the door hinge member, and is also attached to the front end position of the rear door 1 near the rotation axis of the door hinge member.

Then, in a state where the seat belt retractor 5 is attached to the inner panel 2 on the passenger compartment side, the door trim 4 is attached to the inner panel 2 to shield the seat belt retractor 5 ( (See FIG. 4).

At the upper edge of the door trim 4 and at the position of the front end of the rear door 1, there is formed an outlet 17 for withdrawing the seat belt 18 from the inside of the door trim 4 to the passenger compartment side. The exiting seat belt 18 extends upward inside the door trim 4 and is withdrawn from the withdrawal opening 17 toward the passenger compartment. The guide member 20 is fixed to the shoulder portion of the front seat 19 located at substantially the same height as the outlet 17, and the seat belt 18 pulled out from the outlet 17 is guided by the guide member 20. The front end portion is extended substantially forward and is anchored to the lower front portion of the front seat 19. That is, as with the seat belt retractor 5, the position of the outlet 17 of the rear door 1 through which the seat belt 18 is pulled out to the guide member 20 of the front seat 19 is located near the rotation axis of the door hinge member. Is set to the front end position of.

In the case of the vehicle seatbelt retractor mounting structure having the above-described configuration, the seatbelt retractor 5 includes the front panel 11 having a relatively high rigidity, to which the door hinge portion supporting the rear door 1 which is a heavy object is mounted, and the inner panel 2. Since it is integrally attached to both, the inner panel 2
Sufficient mounting support rigidity can be obtained as compared with the case of being mounted only on.

Moreover, the front end portion of the inner panel 2 of the rear door 1 has a corner portion 8 formed by the front wall portion 7.
Since the portions of the front wall portion 7 and the inner wall portion 6 constituting the above are joined and integrated with both the first wall portion 9 and the second wall portion 10 of the front panel 11, the seat belt retractor is The front end portion of the rear door 1 to which 5 is attached is reinforced to a higher degree, and higher attachment support rigidity can be obtained. Furthermore, since a triangular closed cross section is formed in a plan view between the corner portion 8 and the front panel 11, it is possible to obtain higher mounting support rigidity. As a result, it is possible to sufficiently support the shocking load acting on the seat belt retractor 5 in an emergency.

Further, the seat belt retractor 5 and the outlet 17 for withdrawing the seat belt 18 from the seat belt retractor 5 into the vehicle compartment both have their rotational axes based on the rotational axis position of the door hinge portion of the rear door 1. Since the rear door 1 is disposed near the front end side of the rear door 1, relative movement of the seat belt 18 from the seat belt retractor 5 to the occupant of the front seat 19 caused by opening and closing of the rear door 1 is suppressed as small as possible. This makes it possible to minimize the change in the seatbelt wearing feeling that the occupant feels as the rear door 1 is opened or closed, and prevent the seatbelt wearing feeling from being deteriorated.

Further, since the seat belt 18 from the seat belt retractor 5 is once bent at the outlet 17 at a position substantially the same height as the shoulder portion of the front seat 19 and is extended to the guide member 20, the seat belt retractor is installed at the door strut. As compared with the case where the seat belt 18 is attached to the lower part of the seat and is rapidly bent by the guide member 20, the friction generated when the seat belt 18 moves can be reduced, and the flow of the seat belt 18 can be made smoother. As a result, it is possible to prevent the wearing feeling from being deteriorated due to the increase in the friction.

Therefore, according to the seatbelt retractor mounting structure of the first embodiment, it is possible to secure sufficient mounting support rigidity while preventing deterioration of the seatbelt wearing feeling of the occupant of the front seat 19.

5 and 6 show a second embodiment. Book second
In the embodiment, the reinforcing member for supporting the seat belt retractor 5 attached to the rear door 21 is attached to the inner panel 25 of the rear door 21 to reinforce the door hinge support portion 27, instead of the front panel 11 in the first embodiment. The hinge reinforcement 22 for is used.

That is, as shown in FIG. 5, the joint wall portion with the inner panel 25 is slightly extended rearward from the inner end side of the lower hinge reinforcement 22 to form the attachment portion 24, and the seat portion is formed at this portion. By mounting the belt retractor 5, sufficient supporting rigidity can be obtained. Even in such a case, as shown in FIG. 6, a triangular closed cross section 26 is formed between the inner panel 25 and the hinge reinforcement 22 at the inner corner of the front end of the rear door 21. It goes without saying that the structure will be different. Further, in FIG. 5, 28 is a door checker support portion formed on the inner panel 25, and 23 is a checker reinforcement which reinforces the door checker support portion 28.

Also in the case of the second embodiment, the seat belt retractor 5 is integrally attached to both the hinge reinforcement 22 and the inner panel 25, so that the seat belt retractor 5 is attached to the rear door 21. It can be mounted with sufficient mounting support rigidity.

(Effects of the Invention) As described above, according to the vehicle seat belt retractor mounting structure of the present invention, the seat belt retractor and the outlet for pulling the seat belt from now on into the vehicle compartment are both provided on the rear door. Since it is arranged on the front end side of the rear door that is near the rotation axis of the door hinge part, the relative movement of the seat belt from the seat belt retractor to the front seat occupant caused by opening and closing the rear door. It is suppressed as small as possible, so that it is possible to minimize the change in the seatbelt wearing feeling that the occupant feels when the rear door is opened and closed, and prevent the deterioration of the seatbelt wearing feeling. You can At this time, since the seatbelt from the seatbelt retractor is bent at the outlet and then extends to the front seat, the seatbelt retractor is attached to the lower part of the door strut, and the seatbelt is installed in the front seat. Compared to the case where the seat belt is bent sharply at the shoulder position, the friction generated when the seat belt moves can be reduced, and the flow of the seat belt becomes smoother. Can be achieved more reliably.

In addition, the seatbelt retractor is integrally attached to both the reinforcing member to which the door hinge that supports the rear door, which is a heavy load, and the inner panel are attached, so compared with the case where it is attached only to the inner panel. Sufficient mounting support rigidity can be obtained. Moreover, at this time, a corner portion is formed by the inner wall portion and the front wall portion at the front end portion of the inner panel of the rear door, and the front wall portion and the inner wall portion forming the corner portion are the first wall portion of the reinforcing member. Since it is joined to and integrated with both the second wall portion and the second wall portion, the front end portion of the rear door to which the seat belt retractor is attached is reinforced more highly, and higher attachment support rigidity can be obtained. As a result, it is possible to sufficiently support the impact load that acts on the seat belt retractor in an emergency.

Therefore, according to the seatbelt retractor mounting structure of the present invention, even if the seatbelt retractor is mounted on the rear door instead of the conventional center pillar, the front seat occupant's feeling of wearing the seatbelt is deteriorated due to the opening and closing of the rear door. It is possible to secure sufficient mounting support rigidity while preventing it.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a vehicle seat belt retractor mounting structure according to a first embodiment of the present invention, FIG. 2 is an exploded view, and FIG. 3 is a seat belt retractor mounted on an inner panel. FIG. 4 is a perspective view showing a state, FIG. 4 is a perspective view showing a seat belt being stretched, FIG. 5 is a perspective view of the second embodiment, and FIG. 1,21 …… Rear door, 2,25 …… Inner panel, 3 …… Outer panel, 4 …… Door trim, 5 …… Seat belt retractor, 6 …… Inner wall, 7 …… Front wall, 8 …… Corner Part, 9 ... first wall part, 10 ... second wall part, 10a ... door hinge support part (mounting seat for door hinge member), 11 ... front panel (reinforcing member), 22 ... hinge reinforcement ( Reinforcement member).

Claims (1)

[Scope of utility model registration request] 1. A front door for a front seat, wherein a rear door has an outer panel, an inner panel, and a door trim attached to the inner panel, and a front end portion is rotatably attached to a vehicle body about a vertical axis through a door hinge member. In a vehicle seatbelt retractor mounting structure in which a seatbelt retractor is arranged between an inner panel of the rear door and a door trim, a front end portion of the inner panel of the rear door has an inner wall portion on a door trim side and an inner wall portion thereof. It has a front wall portion bent from the front end to the outer panel side, a reinforcing member for supporting the door hinge member is disposed between the front end portions of the inner panel and the outer panel, and the reinforcing member is A first wall portion joined to the inner wall portion at a corner portion formed with the inner wall portion and the front wall portion of the inner panel; A second wall portion integrally formed on the first wall portion and joined to a front wall portion of the inner panel, and a mounting seat for the door hinge member is formed on the second wall portion, A seat belt retractor is integrally supported by the first wall portion of the reinforcing member and the inner wall portion of the inner panel, and the front end position is the upper edge of the door trim and is near the rotation axis of the door hinge member. A seatbelt retractor mounting structure for a vehicle, characterized in that an outlet opening for opening the seatbelt from the seatbelt retractor into the passenger compartment is formed in the passenger compartment.