JP4764141B2 - Vehicle seat structure - Google Patents

Description

  The present invention relates to a seat structure in a vehicle such as a passenger car, a commercial vehicle, a bus or a truck.

  Generally, a vehicle seat is fitted to a floor so as to be movable in the front-rear direction along the right and left support rails (18 in FIG. 1 of Patent Document 1) fixed in the front-rear direction and the right and left support rails. Provided with right and left guide rails (17 in FIG. 1 of Patent Document 1), the right and left lateral frame members (11 and 12 in FIG. 1 of Patent Document 1) for supporting the seat are used as the right and left guide rails. Many of them are connected to change the position of the seat in the front-rear direction.

  In this case, the anchor bracket of the seat belt (40 in FIG. 1 of Patent Document 1) is connected to the right or left lateral frame member, and the buckle in which the seat belt bracket (42 in FIG. 1 of Patent Document 1) is connected. (44 in FIG. 1 of Patent Document 1) is attached to the anchor bracket, and the front end of the seat belt (41 in FIG. 1 in Patent Document 1) is the floor (or the lateral frame member opposite to the anchor bracket). Is attached.

JP 2002-59770 A

  In the state where the occupant sits on the seat as described above and the seat belt is mounted (the seat belt bracket is attached to the buckle), if the vehicle collides from the front, the occupant tries to move forward due to inertia. However, the seat belt prevents the occupant from moving forward.

  In this case, when a large force is applied forward from the occupant to the seat belt (the portion between the front end of the seat belt and the buckle), the portion near the front end of the seat belt and the anchor bracket are attached to the seat belt. When trying to incline toward the inward side of the seat, it may be in a state where it is strongly pressed against the right and left side of the rear part of the seat part toward the inward side of the seat part of the seat, thereby The left horizontal frame member may be deformed so as to fall inward of the seat portion of the seat. When the right and left horizontal frame members are deformed so as to fall inwardly of the seat portion of the seat, the seat belt (the portion between the front end portion of the seat belt and the buckle) corresponding to the occupant's waist is accordingly increased. The restraint becomes loose and the occupant's lower back tends to move forward along the seat.

  In the vehicle seat structure according to the present invention, when a vehicle collides from the front in a state where an occupant is seated on the seat and the seat belt is attached (a state in which the metal fitting of the seat belt is attached to the buckle), It aims at preventing the state which tries to move ahead along a seat part.

(Constitution)
The first feature of the present invention resides in the following configuration in the vehicle seat structure.
Right and left support rails fixed to the floor in the front-rear direction, and right and left guide rails movably fitted in the front-rear direction along the right and left support rails. The right and left lateral frame members that support the seat are connected to the right and left guide rails, and the anchor bracket of the seat belt is connected to the right or left lateral frame member. The reinforcing member is connected across the right and left horizontal frame members so as to be positioned in the vicinity of the connecting portion of the anchor bracket. An engagement member that is movable in the front-rear direction along the lower side of the right or left support rail and can be engaged with the right or left support rail from the lower side is connected to the reinforcing member and arranged on the inner side of the seat. Extend.

(Function)
[I]
When a passenger collides from the front in the state where an occupant is seated on the seat and the seat belt is attached (the seat belt bracket is attached to the buckle), the seat belt (between the front end of the seat belt and the buckle) Part), a large force is applied from the occupant to the front, and the part near the tip of the seat belt and the anchor bracket are tilted inward of the seat part of the seat. It is assumed that the left side portion is strongly pressed toward the inner side of the seat portion of the seat.

According to a first feature of the present invention, to be located in the vicinity of the connecting portion of the anchor bracket, since the coupling over the reinforcing member to the transverse frame members of the right and left, a state as described above, Even if the right and left horizontal frame members are deformed so as to fall inwardly of the seat portion of the seat, the right and left horizontal frame members are supported by the reinforcing members.
In this case, according to a first feature of the present invention, since the reinforcing member in the vicinity of the connecting portion of the anchor bracket in the right or left of the transverse frame member is connected, the inner side anchor bracket of the seat portion of the seat The state of being inclined to the state becomes a state of being directly applied to the reinforcing member, and is supported without waste by the reinforcing member.

[II]
When the vehicle collides from the front with the occupant seated on the seat and wearing the seat belt as described above (with the seat belt bracket attached to the buckle), the seat belt (the seat belt's front end and the buckle) When a large force is applied forward from the occupant to the front part of the seat belt, the part near the tip of the seat belt and the anchor bracket are inclined to the inward side of the seat part of the seat. It may try to move upward at the same time. In such a state, the right or left lateral frame member is lifted upward together with the anchor bracket, and the right or left guide rail may be disengaged upward from the right or left support rail. Conceivable.

According to the first feature of the present invention, the engaging member that is movable in the front-rear direction along the lower side of the right or left support rail and engageable with the right or left support rail from the lower side is connected to the reinforcing member. and that not extend arranged on the inner side of the seat.
Thus, a state as described above, when the lateral frame members of the right or left with the anchor bracket is about to be lifted up, according to a first feature of the present invention, the engaging member is right or left The state in which the right or left lateral frame member is about to be lifted upward together with the anchor bracket is supported by the engaging member and the right or left support rail.

Right this case, according to a first feature of the present invention, which if stronger the state where the lateral frame members of the right or left with the anchor bracket is about to be lifted upward, the engaging member engages from below Alternatively, the left support rail is deformed upward, and the impact that the occupant attempts to move forward due to the collision from the front of the vehicle is absorbed and mitigated by the deformation of the right or left support rail.
In a normal state, when the right and left guide rails are moved along the right and left support rails to change the position of the seat (right and left horizontal frame members) in the front-rear direction, the right and left side rails The engaging member moves along with the frame member along the lower side of the right or left support rail, and the position of the seat (right and left horizontal frame members) can be changed in the front-rear direction without any trouble.

[III]
In the state described in [II] above, according to the first feature of the present invention, it is movable in the front-rear direction along the lower side of the right or left support rail and can be engaged with the right or left support rail from the lower side. A simple engaging member is connected to the reinforcing member and is arranged on the inner side of the sheet and extends.
Thus, according to the first feature of the present invention, the right and left guide rails are moved along the right and left support rails to change the position of the seat (right and left horizontal frame members) in the front-rear direction. At this time, since the engaging member moves in the front-rear direction on the inner side of the seat, a state in which the engaging member hits an object on the outer side of the seat (for example, a magazine inserted into a door pocket) does not occur.
Thus, when arrange | positioning an engaging member in the inner side of a sheet | seat, an engaging member is connected with the reinforcing member which is a member required in the 1st characteristic of this invention, and a reinforcing member is a supporting member of an engaging member Therefore, a dedicated member for supporting the engaging member becomes unnecessary (the number of dedicated members for supporting the engaging member is reduced).

(The invention's effect)
According to a first feature of the present invention, an occupant is seated on the seat, in the state of mounting a seat belt (attached with an bracket of the seat belt buckle), when the vehicle collides from the front, right and left The state in which the lateral frame member is deformed so as to fall inward on the seat portion of the seat is supported by the reinforcing member, thereby preventing the occupant's waist from moving forward along the seat portion of the seat. Can now.

According to a first feature of the present invention, the state in which the lateral frame members of the right or left with the anchor bracket is about to be lifted upward, supported by the engagement member and the right or left of the support rail, right or It is possible to suppress the situation where the left guide rail is lifted upward from the right or left support rail, and the right or left guide rail is lifted upward from the right or left support rail. Can now be prevented.

According to a first feature of the present invention mobile, if the state where the lateral frame members of the right or left with the anchor bracket is about to be lifted upward is strong, the forward inertia occupant by the collision from the front of the vehicle The shock to be absorbed is absorbed by the right or left support rail and is mitigated, thereby improving the shock absorption performance of the vehicle.

  According to the first feature of the present invention, there is no state where the engaging member hits an object on the outer side of the seat (for example, a magazine inserted into the door pocket). There is no such thing as damage. When the engaging member is disposed on the inner side of the seat, a dedicated member for supporting the engaging member becomes unnecessary (the number of dedicated members for supporting the engaging member is reduced), and the number of parts is reduced. This is advantageous in terms of reduction of the cost and simplification of the structure.

  1 and 2 show a seat (driver's seat) of a passenger car, and the seat includes a seat portion 1, a backrest portion 2, and a headrest 3. Brackets 5a are connected to the front and rear sides of the right and left support rails 5, brackets 5a of the right and left support rails 5 are bolted to the floor 4, and the right and left support rails 5 are connected to the floor. 4 is fixed in the front-rear direction at a set height position.

  As shown in FIGS. 1 and 2, the right and left guide rails 6 are supported along the right and left support rails 5 so as to be movable and fixed in the front-rear direction, and the right and left guide rails 6 are supported. Enters the inside of the right and left support rails 5 (see FIG. 3A), and the right and left guide rails 6 and the right and left support rails 5 are fitted. A right lateral frame member 7 (right door side) and a left lateral frame member 8 (right and left center side of the vehicle body) are connected to the right and left guide rails 6, and the right and left lateral frame members 7, A front frame member 9 is connected over the front portion of 8, and a rear frame member 10 is connected over the rear portions of the right and left horizontal frame members 7, 8.

  As shown in FIGS. 1 and 2, the spring member 11 is configured by bending a linear spring material many times in an S shape so that linear portions and semicircular arc portions are alternately arranged. The three spring members 11 are installed over the right and left horizontal frame members 7 and 8. The pad member 12 is made of foamed urethane or the like, and the back surface of the pad member 12 is placed on the right and left horizontal frame members 7, 8, the front frame member 9, the rear frame member 10, and the spring member 11. The backrest portion 2 is connected to the rear portions of the right and left horizontal frame members 7 and 8 via a recliner portion 13. The seat 1 of the seat is configured as described above.

  As shown in FIGS. 1, 2, and 3 (A), on the right side (right door side) of the rear portion of the seat 1 of the seat, an anchor 14 is attached to the fixed portion of the vehicle body close to the floor 4. The distal end portion is connected to the anchor 14, and a metal fitting 18 is inserted into the seat belt 15. An anchor bracket 16 is connected to an outer portion of the rear portion of the left horizontal frame member 8 and a buckle 17 is connected to the anchor bracket 16 on the left side (right and left center side of the vehicle body) of the rear portion of the seat portion 1 of the seat.

  As shown in FIGS. 1, 2, and 3 (a), a horizontally long reinforcing member 19 is prepared, and a reinforcement is provided on the inner side of the left horizontal frame member 8 opposite to the connecting portion 16a of the anchor bracket 16 on the opposite side. The left side portion of the member 19 is connected, and the right side portion of the connecting member 19 is connected to the inner side portion of the right lateral frame member 7 facing the connecting portion 16 a of the anchor bracket 16. The connecting member 19 is formed in a U shape so as to be displaced downward in a front view, and even if the pad member 12 or the spring member 11 is displaced downward as much as possible, the pad member 12 or the spring member 11 is a reinforcing member. 19 is not touched.

  As shown in FIGS. 1, 2, and 3 (A), an engagement member 20 having a J-shape when viewed from the front is connected to the vicinity of the left side portion of the reinforcing member 19 (the engagement member 19 is from the left lateral frame member 8. (The state where the engagement member 19 is positioned between the right and left lateral frame members 7 and 8), and the engagement member 20 is located on the left side via the reinforcing member 19. It is connected to the horizontal frame member 8. The engaging member 20 extends downward, and the engaging member 20 is disposed along the lower side of the left support rail 5 between the front and rear brackets 5a of the left support rail 5. . When the right and left guide rails 6 are moved along the right and left support rails 5 to change the position of the seat (right and left lateral frame members 7 and 8) in the front-rear direction, the right and left laterals The engagement member 20 moves along with the frame members 7 and 8 along the lower side of the left support rail 5, and the position of the seat (right and left horizontal frame members 7 and 8) is obstructed in the front-rear direction. It can be changed without any changes.

  As a result, as shown in FIGS. 2 and 3 (a), in the state where the occupant is seated on the seat and the seat belt 15 is mounted (the bracket 18 of the seat belt 15 is attached to the buckle 17), the vehicle moves forward. From the passenger, a large force is applied to the seat belt 15 (the portion 15a between the front end portion of the seat belt 15 and the buckle 17) from the occupant forward, and a portion near the front end portion of the seat belt 15 and A state in which the anchor bracket 16 is strongly pressed toward the inner side of the seat 1 of the seat 1 to the right and left sides of the rear of the seat 1 so as to incline toward the inner side of the seat 1 of the seat (See FIG. 3B).

  In this case, as shown in FIGS. 1, 2 and 3 (B), the reinforcing member 19 is connected across the right and left horizontal frame members 7 and 8 so as to be located at the connecting portion 16a of the anchor bracket 16. Therefore, even if the right and left horizontal frame members 7 and 8 are deformed so as to fall to the inner side of the seat portion 1 of the seat, the right and left horizontal frame members 7 and 8 are in a state as described above. Is supported by the reinforcing member 19.

  When a vehicle collides from the front in a state where an occupant is seated on the seat and the seat belt 15 is mounted (a fitting 18 of the seat belt 15 is attached to the buckle 17) as described above, the seat belt 15 (seat belt When a large force is applied forward from the occupant to the portion 15a) between the front end portion 15 and the buckle 17, the portion near the front end portion of the seat belt 15 and the anchor bracket 16 are moved to the seat portion 1 of the seat. At the same time as trying to incline inwardly, it may try to move upward (see FIG. 3 (b)).

  In this case, as shown in FIGS. 1, 2, and 3 (B), when the left lateral frame member 8 is lifted upward together with the anchor bracket 16, the engaging member 20 is lowered to the left support rail 5. The state in which the left lateral frame member 8 is lifted upward together with the anchor bracket 16 by being engaged from the side is supported by the engagement member 20 and the left support rail 5. Further, if the state in which the left lateral frame member 8 is lifted upward together with the anchor bracket 16 is strong, the left support rail 5 with which the engagement member 20 engages from below is deformed upward. The impact of the occupant moving forward due to inertia due to a collision from the front of the vehicle is absorbed and mitigated by the deformation of the left support rail 5.

[ First Alternative Embodiment of the Invention]
Oite In the best mode for carrying out the invention] described above, if the anchor bracket 16 to the right of the transverse frame member 7 is connected, connecting the engaging member 20 in the vicinity of the right side portion of the reinforcing member 19 (the right The engaging member 20 may be coupled to the horizontal frame member 7), and the engaging member 20 may be disposed along the lower side of the right support rail 5.

Oite In the best mode for carrying out the invention] foregoing, the right and the anchor 14 is connected to one of the left lateral frame members 7 and 8, anchor to the other of the right and left lateral frame members 7 and 8 When the bracket 16 is connected, the right and left engaging members 20 are connected to the vicinity of the right and left portions of the reinforcing member 19 (the right and left engaging members 20 are connected to the right and left horizontal frame members 7 and 8). The right and left engaging members 20 may be arranged along the lower side of the right and left support rails 5.

[ Second Embodiment of the Invention]
Oite to the aforementioned [BEST MODE FOR CARRYING OUT THE INVENTION] [First alternative embodiment of the invention, the connecting portion 16a of the anchor bracket 16 in the horizontal frame members 7 and 8 of the reinforcing member 19 right or left You may connect with the position (position near the front side or the back side, position near the upper side or the lower side) a little away from the opposite inner side part. The reinforcing member 19 and the engaging member 20 may be integrally formed, or the engaging member 20 may be integrally formed on the right and left horizontal frame members 7 and 8.
The present invention can be applied not only to a seat (driver's seat) but also to a seat (passenger seat), a rear seat, a second row and a third row of a three-row seat type minivan.

Overall perspective view of seat Side view with occupant seated on seat and seat belt attached (with seat belt bracket attached to buckle) (A) Vertical front view with the passenger seated on the seat and the seat belt attached (with the seat belt bracket attached to the buckle), (B) The passenger seated on the seat and seat belt attached in (a state of mounting fittings of the seat belt buckle), longitudinal positive elevational view in the case where the vehicle collides from the front

4 Floor 5 Right and Left Support Rail 6 Right and Left Guide Rail 7, 8 Right and Left Horizontal Frame Member 15 Seat Belt 16 Anchor Bracket 16a Anchor Bracket Connection Portion 19 Reinforcement Member 20 Engagement Member

Claims (1)

Right and left support rails fixed to the floor in the front-rear direction, and right and left guide rails movably fitted in the front-rear direction along the right and left support rails,
Connecting right and left lateral frame members supporting a seat to the right and left guide rails, and connecting an anchor bracket of a seat belt to the right or left lateral frame member;
A reinforcement member is connected across the right and left lateral frame members so as to be positioned in the vicinity of the connection portion of the anchor bracket,
An engagement member that is movable in the front-rear direction along the lower side of the right or left support rail and is engageable with the right or left support rail from the lower side is connected to the reinforcing member and is provided on the inner side of the seat. A vehicle seat structure arranged and extended.

Images