JP4296942B2 - Mounting structure for vehicle seat belt - Google Patents

Description

  The present invention relates to a mounting structure for a vehicle seat belt, and particularly to a mounting structure for a vehicle seat belt provided with a roll bar.

Conventionally, in a vehicle, a seat belt is provided in order to ensure the safety of an occupant. However, in an open car, there is a problem that it is difficult to secure an installation location of the seat belt retractor.
In other words, in the case of an open car, an open car roof member (a retractable hood or a hard roof) is provided, and a link mechanism for storing and deploying the roof member is provided on the side of the seat. Therefore, it is difficult to lay out the seat belt anchor on the side of the seat.
Further, since a storage portion for storing the roof member is provided on the rear side of the seat, it is difficult to lay out on the rear side of the seat.
Therefore, Patent Document 1 below discloses that a seat belt retractor is disposed on a roll bar disposed on the rear side of the seat. Specifically, a crossbar is formed with respect to a roll bar member formed of a cross bar extending in the vehicle width direction and a roll bar formed in a substantially inverted U shape disposed above the cross bar. A structure is disclosed in which a seat belt retractor is disposed above and a belt anchor is attached to the upper side of the roll bar.
According to Patent Document 1 as described above, the seat belt retractor can be disposed using the roll bar.

JP-A-4-342672

However, according to the above-mentioned Patent Document 1, there is a possibility that a storage space for storing a roof member (a retractable hood or a hard roof) of an open car cannot be secured sufficiently.
That is, since a large load is applied to the seat belt retractor at the time of collision, it is necessary to increase the strength of the cross bar when the seat belt retractor is attached to the cross bar.
Therefore, as shown in Patent Document 1, when the seat belt retractor is disposed on the crossbar, in order to ensure the strength of the crossbar, for example, it is necessary to increase the thickness of the crossbar in the vehicle front-rear direction. Accordingly, the storage space for storing the roof member is reduced.
Although it is conceivable to expand the storage space to the rear side of the vehicle, it is difficult to ensure the limited length of the vehicle.

  The present invention has been made in consideration of the above-described problems, and its purpose is to provide a seat belt retractor while maintaining the strength of a roll bar unit to which the seat belt retractor is attached within the limited length of the vehicle. An object of the present invention is to provide a vehicle seat belt mounting structure that can be disposed close to a seat.

In order to achieve the above object, the present invention provides the following solution as a solution. That is, in the first configuration of the present invention, a roll bar disposed on the vehicle rear side of the seat and substantially above the belt line to protect the occupant,
A cross bar connected at the lower end of the roll bar and extending in the vehicle width direction;
An open car provided with a roll bar unit composed of a side connection member that connects the vicinity of both ends on the lower surface side of the cross bar and a vehicle body member disposed below the cross bar,
A roof member that can be selected between an unfolded state that covers a compartment portion to which the seat is attached and a retracted state that is not covered;
A link mechanism provided on the side of the roll bar for moving the roof member to any of the selectable states;
A storage part that is formed adjacent to the rear of the roll bar and stores the roof member when the roof member is in a storage state;
A center connecting member that connects a substantially central portion on the lower surface side of the cross bar and a vehicle body member disposed below the cross bar;
The seat belt retractor of the seat belt for seat is configured to be attached to the center connecting member.

According to the first configuration of the present invention, since the center connecting member that connects the substantially center portion of the crossbar and the vehicle body member disposed below the crossbar is provided, the crossbar in the vehicle longitudinal direction is provided. It is not necessary to increase the plate thickness, and the strength of the entire roll bar unit can be increased while maintaining the storage space for the roof member.
Since the seat belt retractor is attached to the center connecting member, the seat belt retractor can be disposed close to the seat while maintaining the strength of the roll bar unit to which the seat belt retractor is attached within the entire length of the limited vehicle. it can.

In the second configuration of the present invention, the center connecting member is attached with a bracket having an extending portion extending in the left and right vehicle width directions around the center connecting member,
The seat belt retractors of the left and right seats arranged on both sides of the center connecting member are configured to be respectively attached to the extending portions of the brackets close to each other.

  According to the second configuration of the present invention, the brackets having the extending portions extending in the left and right vehicle width directions around the center connecting member are attached, and the seats for the left and right seats are attached to the extending portions. Since the belt retractor is attached, the bracket for attaching the seat belt retractors for the left and right seats can be shared by one bracket, and the number of parts can be reduced.

  In the third configuration of the present invention, a seat belt anchor is attached to the roll bar, and the roll bar to which the seat belt anchor is attached is covered with a trim. A belt extending from the seat belt retractor to the seat bell anchor is routed.

  According to the third configuration of the present invention, the seat belt anchor is attached to the roll bar, and the belt extending from the seat belt retractor to the belt anchor is routed in the trim that covers the roll bar to which the belt anchor is attached. Therefore, the seat belt can be covered with the trim, and the appearance can be improved.

According to the fourth configuration of the present invention, the roll bar is formed in a substantially inverted U shape, and the lower end of the outer side portion of the roll bar in the vehicle width direction is connected to the cross bar of the side connecting member. Connected to substantially the upper side of the position to be a part,
The seat belt anchor is configured to be attached to an outer portion of the roll bar in the vehicle width direction.

  According to the fourth configuration of the present invention, the seat belt retractor is attached to the center connecting member, and the seat belt anchor is positioned on the substantially upper side of the position serving as the connecting portion of the side connecting portion. Since it is attached to the direction outer side part, the load which acts on a seatbelt retractor can be disperse | distributed to a center connection part and a side connection part, and the load resistance as the whole roll bar unit can be improved.

According to the fifth configuration of the present invention, the center connecting member has a lower portion offset to the front side in the vehicle front-rear direction with respect to the upper portion,
The seat belt anchor is disposed above the center connecting member, and when the roof member is retracted on the vehicle rear side below the center connecting portion, A storage space capable of storing a part is formed.

  According to the fifth configuration of the present invention, the lower portion of the center connecting member is offset to the front side in the vehicle front-rear direction with respect to the upper portion, the seat belt anchor is attached to the upper portion, and the vehicle rear side of the lower portion When the roof member is in the retracted state, a storage space in which a part of the roof member can be stored is formed, so that the upper portion can be used as a seat belt anchor attachment portion and the lower side This space can be used as a storage space for the roof member.

  According to the present invention, the seat belt retractor can be disposed close to the seat while maintaining the strength of the roll bar unit to which the seat belt retractor is attached within the limited length of the vehicle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a vehicle according to the present embodiment. Reference numeral 1 denotes an open car type vehicle, and a roof member 3 is disposed on the vehicle rear side of the front pillar 2.
The roof member 3 includes a steel plate roof portion 3a, a steel plate pillar portion 3b, and a rear glass portion 3c. Is connected to the vehicle body on the side of the roll bar unit 5 to be described later.
As shown by a solid line in FIG. 1, the roof member 3 is in an unfolded state that covers the interior 6 of the vehicle 1, and as shown by a two-dot chain line in FIG. It is configured to be selectable to a storage state stored in a storage unit 8 formed behind the roll bar unit 5 disposed.

Next, a specific structure of the roll bar unit 5 will be described with reference to FIG. FIG. 2 is a perspective view of the roll bar member 5. In FIG. 2, the trim 10 covering the roll bar unit 5 is not shown.
In FIG. 2, the roll bar unit 5 is disposed above the belt line B shown in FIG. 1 on the side frame 9 extending in the vehicle width direction behind the seat 7 and behind the headrest 7a of each seat 7. Two substantially inverted U-shaped roll bar portions 5a and 5b connected to the upper side of the side frame 9 and the outer sides of the roll bar portions 5a and 5b at both ends of the side frame 9 in the vehicle width direction. One end is connected to the lower surface side of the side frame 9 corresponding to the position where the side portion is connected, and the other end is connected to the floor (not shown). The center support member 5e is connected to the substantially lower surface of the center and the other end is connected to a floor (not shown).
The side support members 5c and 5d and the center support member 5e are gently curved from the upper side to the lower side so that the other end side is offset to the vehicle front side with respect to the one end side.
A bracket 12 for attaching a seat belt retractor 11 to be described later is attached to the center support member 5e at a position slightly above.
The bracket 12 includes extending portions 12a and 12b that extend in the left and right vehicle width directions with the center support member 5e as a center, and each of the left and right seats, that is, the driver seat and the passenger seat. Each seat belt retractor 11 can be attached.
The roll bar unit 5 configured as described above is entirely covered with a trim 10 as shown in FIG.

Next, a specific structure of the link mechanism 4 of the roof member 3 will be described with reference to FIGS.
4 is a side view of the link mechanism 4 of the roof member 3 as viewed from the side of the vehicle, and FIG. 5 is a plan view of the link mechanism 4 of the roof member as viewed from above the vehicle. It is the top view which looked at the state which the vehicle front side edge part of the roof part 3a moved to the vehicle rear side rather than the roll-bar part 5a in the stage in the middle of changing to a retracted state from the upper side.

One end of the link mechanism 4 is pivotally supported by the vehicle body (not shown in FIG. 4) on the side of the roll bar member 5, the middle is pivotally supported by the pillar portion 3b, and the other end is pivotally supported by the roof member 3a. The first link member 4a formed in a substantially inverted letter shape, one end of which is pivotally supported by the vehicle body (not shown in FIG. 4) on the side of the roll bar member 5, and the other end is the first link member. A second link member 4b formed in a substantially inverted letter shape that is supported in the vicinity of a pivot support position of the roof member 3a of 4a, one end is pivotally supported on the other end side of the first link member 4a, and the other A third link member 4c whose end is pivotally supported on the other end side of the second link member 4b, one end is pivotally supported on the pillar portion 3b via the first link member 4a, and the other end is on the rear glass portion 3c. A fourth link member 4d that is pivotally supported and formed in a substantially rectangular shape, and one end of the fourth link member 4d The fourth link member 4d is pivotally supported by the pillar portion 3b in the vicinity of the pivot support position via the member 4a, and the other end is pivotally supported by the rear glass portion 3c in the vicinity of the pivot support position of the fourth link member 4d. It is comprised from the 5th link member 4e formed in the character shape, and the motor unit M which drives the 1st link member 4a.
Of these link members, the first to third link members 4a, 4b, 4c constitute one four-bar link mechanism, and the first link member 4a, fourth, fifth link members 4d, 4e, Constitutes another four-bar linkage mechanism.
Accordingly, when the motor M is driven and the first link member 4a is pivoted in the direction indicated by the arrow A in the drawing with the one end side pivotally supported by the vehicle body as a fulcrum, the pillar portion 3b rotates in the same manner. The roof member 3a once moves to the rear side from the pillar portion 3b, and then rotates similarly on the rear side of the pillar portion 3b.
At this time, the rear glass portion 3c is also rotated away from the pillar portion 3b by the fourth and fifth link members 4d and 4e, and is rotated in the same manner as the roof portion 3a and pillar portion 3b, and the roof member 3 is retracted as shown in FIG. It is stored in the unit 8.

Next, the mounting structure of the seat belt retractor 11 according to the present embodiment will be described with reference to FIGS.
5 is a front view of the seat belt retractor 11 attached to the roll bar unit 5 as viewed from the front of the vehicle with the trim 10 removed, and FIG. 6 shows one seat 7 with the trim 10 attached. FIG. 7 is a side view of the seat belt retractor 11 attached to the center support member 5e of the roll bar unit 5 as seen from the side of the vehicle. In FIG. 7, the roof portion 3 a and the pillar portion 3 b of the roof member 3 are not shown and are shown by two-dot chain lines.

As shown in FIG. 5, the seat belt retractors 11 and 11 of the driver seat and the passenger seat are inclined to the extending portions 12 a and 12 b of the bracket 12 fixed from above the center connecting member 5 e, respectively. It is fixed.
Further, as shown in FIG. 6, seat belt anchors 13 and 13 are respectively provided below the outer side portions of the roll bar portions 5a and 5b in the vehicle width direction. Belts 14, 14 extending to the bell anchors 13, 13 are routed in the trim 10.
Here, the load acting on the seat belt retractor 11 can be applied to the center support member 5e via the bracket 12, and the side support member 5c via the belt 14, the seat belt anchors 13 and 13, and the side frame 9. 5d, that is, it is possible to disperse the load at three locations of the support members 5c, 5d, and 5e.

Further, as shown in FIG. 7, the side support members 5c and 5d and the center support member 5e are gently curved from the upper side to the lower side so that the lower side is offset from the upper side to the vehicle front side. ing. When the roof member 3 is in the retracted state, a part of the roof member 3 on the front end side of the rear glass portion 3c can be stored behind the support members 5c, 5d, and 5e. A space 15 is formed.
Accordingly, the upper side of the center support member 5e can be used as a mounting space for the seat belt retractor 11, and the lower side can be used as a storage space for the rear glass portion 3c.

As described above, according to the present embodiment, since the center support member 5e that connects the substantially central portion of the crossbar 9 and the vehicle body member disposed below the crossbar 9 is provided, the crossbar 9 It is not necessary to increase the plate thickness in the vehicle front-rear direction, and the strength of the entire roll bar unit 5 can be increased while maintaining the storage space for the roof member 3.
Since the seat belt retractor 11 is attached to the center support member 5e, the seat belt retractor 11 is attached to the seat 7 while maintaining the strength of the roll bar unit 5 to which the seat belt retractor 11 is attached within the limited length of the vehicle. Can be placed close to each other.

  Also, brackets 12 having extension portions 12a and 12b extending in the left and right vehicle width directions around the center support member 5e are attached, and left and right seat belts for left and right seats are attached to the extension portions 12a and 12b. Since the retractors 11 and 11 are attached, the bracket 12 for attaching the respective seat belt retractors 11 and 11 for the left and right seats can be shared by one bracket, and the number of parts can be reduced.

  Further, seat belt anchors 13 and 13 are attached to the roll bar portions 5a and 5b, and extend from the seat belt retractor 11 to the seat belt anchor 13 in the trim 10 covering the roll bar unit 5 to which the seat belt anchor 13 is attached. Since the belt 14 is routed, the seat belt can be covered with the trim 10, and the appearance can be improved.

  In addition, the seat belt retractor 11 is attached to the center support member 5e, and the seat belt anchor 13 has a vehicle width of the roll bar portions 5a and 5b positioned substantially above the position to be the connecting portion of the side support members 5c and 5d. Since it is attached to the outer portion in the direction, the load acting on the seat belt retractor 11 can be distributed to the center support portion 5e and the side support members 5c, 5d, and the load resistance of the roll bar unit 5 as a whole is improved. Can do.

  In addition, the lower portion of the center support member 5e is offset to the front side in the vehicle front-rear direction with respect to the upper portion, the seat belt anchor 13 is attached to the upper portion, and the roof member 3 is located on the vehicle rear side of the lower portion. When the storage state is set, a storage space 15 capable of storing the front end side of the rear glass portion 3c of the roof member 3 is formed, so that the upper portion can be used as a mounting portion for the seat belt anchor 13 and the lower portion. The space on the side can be used as a storage space for the rear glass portion 3 c of the roof member 3.

  In the present embodiment, an example is shown in which the brackets 12 are provided with extending portions 12a and 12b extending to the left and right, and the bracket 12 for attaching the left and right seat belt retractors 11 and 11 is also used as one bracket. However, dedicated brackets for the left and right seat belt retractors 11, 11 may be attached to the center connecting member 5e.

  In the present embodiment, the roll bar unit 5 is applied to a double mountain type in which the substantially reverse U-shaped roll bar portions 5a and 5b are respectively arranged behind the headrest 7a of each sheet 7. In addition, you may make it apply to the type formed in one substantially reverse U shape over a vehicle width direction.

  Further, in the present embodiment, an example of a so-called hard roof made of a steel plate is shown as the roof member 3, but the roof member 3 may be applied to a so-called hood made of cloth.

The vehicle side view which concerns on embodiment of this invention. The perspective view of the roll bar unit which concerns on embodiment of this invention. The side view which looked at the link mechanism of the roof member concerning the embodiment of the present invention from the vehicles side. The top view which looked at the link mechanism of the roof member concerning the embodiment of the present invention from the vehicles upper part side. The front view which looked at the attachment state to the roll bar unit of the seatbelt retractor which concerns on embodiment of this invention from the vehicle front. The front view which looked at one seat concerning the embodiment of the present invention from the vehicles front side. The side view which looked at the attachment state to the center support member of the roll bar unit of the seatbelt retractor which concerns on embodiment of this invention from the vehicle side.

Explanation of symbols

1: Vehicle 3: Roof member 4: Link mechanism 5: Roll bar unit 5a, 5b: Roll bar portion (roll bar)
5c, 5d: Side support member (side connecting member)
5e: Center support member (center connection member)
6: Cab 7: Seat 8: Storage
9: Cross bar 10: Trim 11: Seat belt retractor 12: Brackets 12a, 12b: Extension portion 13: Seat belt anchor 14: Belt 15: Storage space

Claims (5)

A roll bar disposed on the vehicle rear side of the seat and substantially above the belt line to protect the occupant;
A cross bar connected at the lower end of the roll bar and extending in the vehicle width direction;
An open car provided with a roll bar unit composed of a side connection member that connects the vicinity of both ends on the lower surface side of the cross bar and a vehicle body member disposed below the cross bar,
A roof member that can be selected between an unfolded state that covers a compartment portion to which the seat is attached and a retracted state that is not covered;
A link mechanism provided on the side of the roll bar for moving the roof member to any of the selectable states;
A storage part that is formed adjacent to the rear of the roll bar and stores the roof member when the roof member is in a storage state;
A center connecting member that connects a substantially central portion on the lower surface side of the cross bar and a vehicle body member disposed below the cross bar;
A seatbelt mounting structure for a vehicle, wherein a seatbelt retractor of the seatbelt for seating is attached to the center connecting member. The center connecting member is attached with a bracket having an extending portion extending in the left and right vehicle width directions around the center connecting member,
2. The vehicle seat according to claim 1, wherein the seat belt retractors of the left and right seats disposed on both sides of the center connecting member are respectively attached to extending portions of the brackets adjacent to each other. Belt mounting structure. A seat belt anchor is attached to the roll bar, and the roll bar to which the seat belt anchor is attached is covered with a trim,
The vehicle seat belt mounting structure according to claim 1 or 2, wherein a belt extending from the seat belt retractor to the seat bell anchor is routed in the trim. The roll bar is formed in a substantially inverted U shape, and the lower end of the outer side portion in the vehicle width direction of the roll bar is connected to a substantially upper side of the position where the side connecting member is a connecting portion to the cross bar. And
The vehicle seat belt attachment structure according to claim 3, wherein the seat belt anchor is attached to an outer portion of the roll bar in the vehicle width direction. As for the said center connection member, a lower part is offset by the vehicle front-back direction front side with respect to an upper part,
The seat belt anchor is disposed above the center connecting member, and when the roof member is retracted on the vehicle rear side below the center connecting portion, The vehicle seat belt mounting structure according to any one of claims 1 to 4, wherein a storage space capable of storing the portion is formed.

Images