JP6770240B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat having a side support device .

Conventionally, a drive mechanism for driving a side support device that supports the upper body of an occupant from the side by pulling a cable by a driving force from a driving force generating device such as an actuator has been known (Patent Document). 1). In the configuration of Patent Document 1, each of the two cables corresponding to the left and right paddle bodies extends individually from the actuator provided on the left side frame of the seat back, passes through the seat back, and branches in the middle. It is connected to the corresponding paddle body.

Japanese Unexamined Patent Publication No. 2011-178202

By the way, in a vehicle such as an automobile, it is necessary to arrange many parts in a narrow space, so it is desired to save space for arranging parts by reducing the number of parts to be arranged. There is.

The present invention aims to reduce the space of the space for arranging the parts.
It is another object to improve the uniformity of the operation of the drive braking system.
Another object is to improve the assembly stand properties.
Another object is to improve the maneuverability of the cable.
Another object is to prevent the load is applied to the cable.
In addition, an object of the present invention is to suppress the generation of abnormal noise.
It is another object to improve the drive of the drive braking system.

The vehicle seat for achieving the above-mentioned purpose is fixed to the side frame, the side support device attached to the side frame and supporting the occupant's upper body from the side, and the side frame to protect the occupant from the side. The side support device includes a support member for supporting the upper body of the occupant from the left and right , and a fixing member fixed to the side frame, and the support member is an airbag in the height direction. It is placed at a position that overlaps with the device.
The side frame has two mounting holes for mounting a force cloth that regulates the deployment direction of the bag body of the airbag device, and the support member may be fixed to the side frame between the two mounting holes. ..
The support member rotates left and right around the shaft at the rear end and is attached to the left and right inside of the side frame. The airbag device is attached to the left and right outside of the side frame and sandwiches the side frame. It may be located on the opposite side.
Further, the vehicle drive mechanism for driving the drive device by pulling or loosening the cable from the pulled state by the drive force from the drive force generator includes the first cable, the second cable, and one end of the first cable. The first drive device, which is driven by engaging the portions and pulling or loosening the other end of the first cable, and one end of the second cable are engaged with the second cable. The other end of the first cable is provided with a second driving device that is driven by being pulled or loosened from the pulled state, and one end of the first cable has an engaging portion and the other end of the second cable. Is connected to the engaging portion, the first driving device has a supporting member for supporting the occupant and a pressing member for pressing the supporting member, and the engaging portion engages with the pressing member. You may be doing it.
Further, the fixing member has a shaft portion extending in the vertical direction for supporting the front end portion of the support member so as to be rotatable left and right, and the upper end and the lower end of the shaft portion are in the vertical direction. It is preferable that it is fixed to the side frame at a position between them.

According to such a configuration, since one end of the first cable and the other end of the second cable are connected, the first cable and the second cable can be treated as one cable, so to speak. As a result, for example, the number of cables extending from the driving force generator can be reduced, so that the space for arranging the cables can be saved. Further, as compared with the conventional technique in which the two cables individually extend from the actuator, branch in the middle, and are connected to the drive device, it is easy to make the stroke when the two cables operate uniform. Therefore, the uniformity of operation of the two drive devices can be improved.

In the vehicle drive mechanism described above, the second cable is configured to be engageable with the engaging portion, and when engaged with the engaging portion, the other end of the second cable is of the first cable. It can be configured to have a connecting portion connected to one end portion.

According to this, since the first cable and the second cable can be easily connected, the assembling property can be improved.

In the vehicle drive mechanism described above, the first cable and the second cable may be integrally formed.

According to this, since the number of parts can be reduced, the assembling property can be improved.

In the vehicle drive mechanism described above, the direction in which one end of the first cable enters the first drive device and the direction in which one end of the second cable enters the second drive device are the same. Can be done.

According to this, the configurations of the first drive device and the second drive device can be easily made symmetrical, so that the uniformity of operation of the two drive devices can be further improved.

In the vehicle drive mechanism described above, the second cable may be configured such that one end of the first cable is pulled out from the first drive device on a side opposite to the side where the first drive device enters. it can.

According to this, since the first cable and the second cable can be arranged in a straight line in the first drive device, the manageability of the cables can be improved.

In the vehicle drive mechanism described above, the vehicle includes a vehicle seat having a first frame and a second frame, and the other end of the first cable is connected to the drive force generator to generate the drive force. The device and the first drive device may be attached to the first frame, and the second drive device may be attached to the second frame.

According to this, since the first cable can be shortened, the space for arranging the first cable can be saved.

In the vehicle drive mechanism described above, the first cable is arranged so as to operate along the longitudinal direction of the first frame, and the second cable operates along the longitudinal direction of the second frame. It can be configured to be arranged in.

According to this, since the cables can be arranged along the frame, it is possible to further save the space for arranging the cables.

In the vehicle drive mechanism described above, one of the first frame and the second frame constitutes a left frame of the backrest, and the other constitutes a right frame of the backrest, and the vehicle seat is described above. It is arranged between the first frame and the second frame, has a load support member for supporting a load from an occupant, and the second cable is configured to pass behind or under the load support member. can do.

According to this, even when a load is applied to the load supporting member from the occupant, it is possible to suppress the load from being applied to the second cable.

In the vehicle drive mechanism described above, the second cable may be configured to be fastened to the load supporting member.

According to this, since the movement of the second cable is suppressed when the second cable is pulled, the interference between the second cable and the other member is suppressed, and the generation of abnormal noise can be suppressed.

In the vehicle drive mechanism described above, the pressing member is movable in a direction in which one end to which one end of the first cable is connected is close to and separated from the other end by the operation of the first cable. When moving in a direction close to the other end, the intermediate portion between the one end and the other end is bent so as to project in a predetermined direction, and the first cable is in the predetermined direction with respect to the pressing member. Can be configured to be arranged along the pressing member on the opposite side.

According to this, since the interference between the intermediate portion of the bending pressing member and the first cable is suppressed, it is possible to suppress the load applied to the first cable when the intermediate portion of the pressing member is bent.

In the vehicle drive mechanism described above, the support member moves by being pressed by the intermediate portion by bending of the pressing member, and the one end portion of the first cable and the one end portion of the pressing member are engaged with each other. The configuration may be provided so as to cover the joint portion.

According to this, by being covered with the support member, it is possible to prevent a load from being applied to the first cable, more specifically, the engaging portion between one end of the first cable and one end of the pressing member.

The vehicle drive mechanism described above may be configured to include a guide portion for guiding the movement of the one end of the pressing member.

According to this, since one end of the pressing member can be moved satisfactorily, the drivability of the first driving device can be improved.

According to the present invention, it is possible to save space for arranging parts. Further, since the first cable and the second cable are connected, they can be handled as one cable, and the space for arranging the cables can be saved. Further, since the stroke when the two cables are operated can be easily made uniform, the uniformity of the operation of the two drive devices can be improved.

Further , by providing an engaging portion at one end of the first cable and providing a connecting portion capable of engaging with the engaging portion at the other end of the second cable, the first cable and the second cable can be easily connected. Therefore, the assembling property can be improved.

Further, when the first cable and the second cable are integrally formed, the number of parts can be reduced, so that the assembling property can be improved.

Further , by making the direction in which one end of the first cable enters the first drive device and the direction in which one end of the second cable enters the second drive device in the same direction, it becomes easy to make the configurations of the two drive devices symmetrical. The uniformity of operation of the two drive devices can be further improved.

Further , by pulling out the second cable from the first drive device on the side opposite to the side where one end of the first cable enters, the first cable and the second cable can be arranged linearly in the first drive device. Cable maneuverability can be improved.

Further , by connecting the first cable to the driving force generator and attaching the driving force generator and the first driving device to the same frame, the first cable can be shortened, so that the first cable can be arranged. Space can be saved.

Further , by arranging the first cable and the second cable so as to operate along the longitudinal direction of the frame, it is possible to further save the space for arranging the cables.

Further , by passing the second cable after or under the load supporting member arranged between the left and right frames, the load is applied to the second cable even when the load is applied to the load supporting member from the occupant. This can be suppressed.

Further , by fastening the second cable to the load supporting member, the movement of the second cable can be suppressed, so that the interference between the second cable and other members can be suppressed, and the generation of abnormal noise can be suppressed. ..

Further , by arranging the first cable along the pressing member on the side opposite to the protruding direction when bending with respect to the pressing member of the first driving device , the first cable is first when the intermediate portion of the pressing member is bent. It is possible to suppress the load applied to the cable.

Further, a supporting lifting member, by providing so as to cover the engaging portion between the first cable and the pressing member, and the first cable, prevents the load is applied to the engagement portion between the first cable and the pressing member be able to.

Further, by providing the guide portion for guiding the movement of the one end of the push member, it is possible to satisfactorily move the end of the pressing member, it is possible to improve the driving of the first driving device.

It is a perspective view of the vehicle seat as an example of the vehicle seat which concerns on embodiment. It is a perspective view of the frame built in the vehicle seat. It is a front view of a seat back frame. It is an exploded perspective view of the side support device. It is a cross-sectional view which shows the structure of the side support device and its periphery before driving. It is a vertical cross-sectional view of a side support device, and is a figure (a) which shows before driving and a figure (b) which shows after driving. It is the figure which looked at the support member from the surface side. It is a cross-sectional view which shows the structure around the airbag device. It is a figure (a), (b) explaining the 1st cable and the 2nd cable. It is a cross-sectional view which shows the structure of the side support device and its periphery after driving. It is a vertical cross-sectional view which shows the structure of the pressing member which concerns on a modification, and its periphery, and is the figure (a) which shows before driving, and the figure (b) which shows after driving. It is a figure which looked at the support member which concerns on a modification from the back surface side. It is a figure (a), (b) explaining the cable which concerns on the modification.

Next, an embodiment of the present invention will be described with reference to the drawings as appropriate.
As shown in FIG. 1, the automobile as a vehicle in the present embodiment includes a vehicle seat S as an example of a vehicle seat used for a driver's seat, a passenger seat, or the like. The vehicle seat S is mainly composed of a seat cushion S1 on which the occupant sits, a seat back S2, and a headrest S3 that supports the occupant's head.

As shown in FIG. 2, the seat back S2 includes a metal seat back frame F2, a side support drive mechanism 1 as an example of a vehicle drive mechanism, a plate-shaped pressure receiving member 10 as a load support member, and an occupant. The seat back frame F2 is mainly equipped with an airbag device AB for protecting from the side, and a cushion material 70 made of urethane foam or the like and a skin material 75 made of synthetic leather or cloth are put on the seat back frame F2 so as to cover them. (See FIGS. 5 and 8).

The seat back frame F2 includes left and right side frames 20 that form the left and right frames of the seat back S2. The left and right side frames 20 include a left side frame 20L as an example of the first frame constituting the left frame of the backrest and a right side frame 20R as an example of the second frame constituting the right frame of the backrest. In this embodiment, the left side frame 20L and the right side frame 20R are formed substantially symmetrically.

The pressure receiving member 10 is a member for supporting the load from the occupant, is arranged between the left side frame 20L and the right side frame 20R, and retracts to the left and right side frames 20 via the upper and lower support wires W1 and W2. It is movably connected. When a load of a predetermined value or more is applied to the seat back S2 from the upper body of the occupant due to a collision of another vehicle with the rear portion of the own vehicle, the pressure receiving member 10 bends the support wires W1 and W2 or links. The support wire W2 moves backward due to the swing of the mechanism (reference numeral omitted), so that the support wire W2 moves backward with respect to the left and right side frames 20. As a result, the upper body of the occupant sinks into the seat back S2, so that the influence of the load such as when colliding with the occupant can be mitigated.

The side support drive mechanism 1 is a mechanism for driving the support member 50 as an example of the moving members provided on the left and right sides in the seat back S2. The support members 50 are arranged so as to face each other in the vicinity of the portion under the base of the arm of the occupant seated on the vehicle seat S, and the upper body of the occupant is viewed from the left and right via the cushion material 70 and the skin material 75. I support it. In the vehicle seat S of the present embodiment, the front end portion of the support member 50 is rotated left and right by the side support drive mechanism 1, so that the portion of the seat back S2 facing the vicinity of the portion under the base of the occupant's arm is the occupant. The support position can be adjusted according to the body shape of the occupant by inflating toward or retracting from the inflated state.

As shown in FIG. 3, the side support drive mechanism 1 includes an actuator AC as a driving force generator, a left side support device 3L as an example of the first drive device, and a right side support device 3R as an example of the second drive device. , The first cable 81 and the second cable 82 are mainly provided. In the present embodiment, the left side support device 3L is attached to the inside of the left side frame 20L, and the actuator AC is attached to the outside of the left side frame 20L. Further, the right side support device 3R is attached to the inside of the right side frame 20R in a state of facing the left side support device 3L.

Although the details will be described later, the first cable 81 is a member that transmits the driving force of the actuator AC to the left side support device 3L, one end of which is engaged with the left side support device 3L, and the other end of which is directly connected to the actuator AC. It is connected. Further, the second cable 82 is a member that transmits the driving force of the actuator AC to the right side support device 3R via the first cable 81, one end of which is engaged with the right side support device 3R, and the other end of which is the left side support. It is connected to one end of the first cable 81 in the device 3L. As a result, the support member 50 of the left side support device 3L is driven by the other end of the first cable 81 being pulled or loosened from the pulled state by the driving force from the actuator AC, and also via the first cable 81. The other end of the second cable 82 is pulled or loosened from the pulled state, thereby driving the support member 50 of the right side support device 3R.

In the present embodiment, the second cable 82 extends from the left side support device 3L, passes behind the pressure receiving member 10, and is connected to the right side support device 3R. As a result, even when a load is applied to the pressure receiving member 10 from the occupant, it is possible to prevent the second cable 82 from being directly loaded. Further, in the present embodiment, the second cable 82 is fastened between two left and right openings 18 formed in the pressure receiving member 10 by the binding band 91. As a result, the movement of the second cable 82 can be suppressed when the second cable 82 is pulled, so that the interference between the second cable 82 and other members such as the support wire W1 is suppressed, and the generation of abnormal noise is suppressed. can do.

The left and right side support devices 3L and 3R are mainly composed of a fixing member 30 fixed to one corresponding side frame 20, a pressing member 40 as an example of a bending member, and a support member 50, respectively. There is. In the present embodiment, the left and right side support devices 3L and 3R are configured to be substantially symmetrical. Therefore, in the following description, the detailed configuration of the left side support device 3L attached to the left side frame 20L will be mainly described. To do.

As shown in FIG. 4, the fixing member 30 is a member for supporting the pressing member 40 and the supporting member 50 and fixing them to the side frame 20 (not shown in FIG. 4). In the present embodiment, the fixing member 30 is a substantially instrument-shaped fixing member main body 30A having an opening in the left-right direction, and an upper portion extending diagonally rearward from an end portion of the rear wall of the fixing member main body 30A in the left-right direction. It is configured to have an extension portion 30B and a lower extension portion 30C.

A shaft support portion 31 that rotatably supports the upper end 42 of the pressing member 40, which will be described later, is formed on the upper portion of the fixing member main body 30A. Further, the fixing member main body 30A is a guide portion 32 for guiding the vertical movement of the lower end 41 of the pressing member 40. The guide portion 32 is a surface facing inward in the left-right direction of the side wall 30D constituting the guide portion 32, and has a guide surface 32A that mainly guides the movement of the lower end 41 of the pressing member 40. As shown in FIG. 5, the guide surface 32A is inclined so as to spread laterally from the rear end portion to the front end portion so that the front end portion is located outside in the left-right direction with respect to the rear end portion. As a result, the guide surface 32A is in a state of facing the occupant seated on the vehicle seat S rather than being parallel to the front-rear direction. Further, as shown in FIGS. 6A and 6B, through the upper end portion and the lower end portion of the side wall 30D, respectively, for screwing the screw 92 when fixing the fixing member 30 to the side frame 20. Holes 30E are formed one by one.

As shown in FIG. 4, shaft portions 33 extending in the vertical direction are formed at the ends of the upper and lower extending portions 30B and 30C. More specifically, the shaft portion 33A is formed so as to project upward from the upper surface of the upper extending portion 30B, and the shaft portion 33B is coaxial with the shaft portion 33A and protrudes downward from the lower surface of the lower extending portion 30C. Is formed in. Further, the shaft portion 33C is formed so as to be coaxial with the shaft portions 33A and 33B and to connect the upper and lower extending portions 30B and 30C. These shaft portions 33A to 33C (shaft portions 33) are portions that function as shafts that rotatably support the support member 50, and are integrally formed with the fixing member 30 as a part of the fixing member 30. As a result, the number of parts can be reduced as compared with the configuration in which the shaft is provided separately from the fixing member, so that the structures of the side support devices 3L and 3R can be simplified.

The pressing member 40 is a member for driving the support member 50, and mainly has a lower end 41 at one end, an upper end 42 at the other end, and an intermediate portion 43 between the lower end 41 and the upper end 42. ing. As shown in FIGS. 6A and 6B, the upper end 42 of the pressing member 40 is rotatably supported with respect to the fixing member 30 (side frame 20), and the details will be described later, but the lower end 41 One end of the first cable 81 is connected to the cable 81. As a result, the pressing member 40 can move up and down along the guide surface 32A (side surface of the side frame 20) with respect to the upper end 42 to which the lower end 41 is fixed by the operation of the first cable 81. It is configured in.

The intermediate portion 43 is configured to be bendable so as to project inward in the left-right direction (predetermined direction) when the lower end 41 moves upward in a direction close to the upper end 42. More specifically, the intermediate portion 43 is a pair of a bent portion 43A that bends when the lower end 41 moves in a direction close to the upper end 42 and a pair formed adjacent to the upper and lower sides of the bent portion 43A with the bent portion 43A interposed therebetween. Mainly has a protruding portion 43B of. The bent portion 43A is formed to be thinner than the other portions of the pressing member 40 so that it can be bent and deformed. The pair of protruding portions 43B are formed in a rib shape that protrudes inward in the left-right direction from the bent portion 43A in a state before the bent portion 43A shown in FIG. 6A is bent.

As shown in FIG. 5, the support member 50 is a substantially plate-shaped member that supports the vicinity of the portion under the base of the occupant's arm via the skin material 75 and the cushion material 70, and is a fixing member 30 (side frame 20). ), The front end is configured to be rotatable left and right around the rear end. More specifically, as shown in FIG. 4, the support member 50 has an upper supported portion 51 arranged on the upper extending portion 30B of the fixing member 30 and a lower extending portion of the fixing member 30 at the rear end portion. It has a lower supported portion 52 arranged under the portion 30C, and a shaft engaging portion 53 formed between the upper supported portion 51 and the lower supported portion 52. Then, the recesses 51A and 52A formed in the upper and lower supported portions 51 and 52 engage with the shaft portions 33A and 33B, and the shaft engaging portion 53 engages with the shaft portion 33C, whereby the upper supported portion 51 , The lower supported portion 52 and the shaft engaging portion 53 are rotatably supported with respect to the fixing member 30. In the present embodiment, since the shaft portions 33A and 33B have a substantially barrel-shaped cross-sectional shape, when the support member 50 is largely rotated inward in the left-right direction with respect to the fixing member 30, the upper and lower covers are covered. Although it can be easily disengaged from the support portions 51 and 52, the support member 50 is prevented from falling off from the fixing member 30 because the shaft engaging portion 53 is engaged with the shaft portion 33C.

The support member 50 has a continuous substantially U-shape that is thinner than the upper and lower supported portions 51 and 52 at the edge of the range from the vicinity of the center of the upper end portion to the vicinity of the center of the lower end portion through the front end portion. It has a plate-shaped portion 54. Then, the plate-shaped portion 54 is formed with a bead 54A that is thicker than the other portions of the plate-shaped portion 54 by swelling toward the front side of FIG. 4 along the edge of the plate-shaped portion 54. .. As shown in FIG. 5, the bead 54A is formed so as to form a substantially arc-shaped rounded cross-sectional shape.

As shown in FIGS. 4 and 7, the support member 50 has a plurality of reinforcing ribs 55 on the front surface 50A for supporting the occupant and the back surface 50B on the opposite side of the front surface 50A. In the present embodiment, the reinforcing rib 55 on the back surface 50B is formed so as to extend in the vertical direction or the horizontal direction, and a part thereof intersects in a cross shape. In other words, the support member 50 has a plurality of recesses 56 on the front surface 50A and the back surface 50B, respectively, and a plurality of reinforcing ribs 55 are provided so as to partition the recesses 56. It is formed. With such a configuration, the rigidity of the support member 50 can be improved, so that the occupant seated on the vehicle seat S can be stably supported. The recess 56A formed near the center of the back surface 50B extends long in the vertical direction, and has a function of guiding the movement of the intermediate portion 43 of the pressing member 40 as shown in FIGS. 6A and 6B. have.

The fixing member 30, the pressing member 40, and the supporting member 50 described above are assembled and then fixed to the inner surface of the side frame 20 as the side support devices 3L and 3R as shown in FIG. More specifically, the side frame 20 has a substantially U-shape in which the front end portion 20A and the rear end portion 20C bend inward in the left-right direction with respect to the side portion 20B, and the side frame 20 has a substantially U-shape on the rear surface of the fixing member 30. , A plurality of contact ribs 35 projecting rearward are formed side by side in the vertical direction (only one is shown). Then, the fixing member 30, that is, the side support devices 3L and 3R, is fixed to the side portion 20B of the side frame 20 by the screw 92 in a state where the contact rib 35 is in contact with the inner surface of the rear end portion 20C of the side frame 20. There is. As a result, the side support devices 3L and 3R are supported by both the side portion 20B and the rear end portion 20C, so that the support rigidity can be improved, and the occupant can be stably supported by the support member 50.

When the side support devices 3L and 3R are fixed to the side frame 20, the support member 50 is arranged adjacent to the inside of one side frame 20 in the left-right direction in the seat back S2, and the pressing member 40 is one side frame. It will be arranged between the 20 and the support member 50. Further, in the present embodiment, substantially the entire rotation shaft of the support member 50, that is, the shaft portion 33 of the fixing member 30, is arranged on the rear side of the rear end (see the chain line) of the side frame 20. As a result, the amount of rotation of the support member 50 can be increased as compared with the configuration in which the shaft portion 33 is arranged on the front side of the rear end of the side frame 20, so that the adjustment range of the support position by the side support devices 3L and 3R is widened. can do.

As shown in FIG. 2, in the present embodiment, the left and right side support devices 3L and 3R (fixing members 30) are fixed to the side frame 20 between two mounting holes 25 in the vertical direction. The mounting hole 25 is a through hole as a force cloth mounting portion for allowing the force cloths 61 and 62 (see FIG. 8) that regulate the deployment direction of the bag body of the airbag device AB to be attached to the side frame 20. , One at the upper end and one at the lower end of the side frame 20 are formed so as to be vertically displaced.

Here, the configuration around the airbag device AB in the seat back S2 will be briefly described. As shown in FIG. 8, the airbag device AB is configured to include a bag body (not shown), an inflator, and the like, and is fixed to the right side frame 20R via a support plate 26. The force cloths 61 and 62 are arranged so as to surround the airbag device AB, and the front end portion is sewn together with the skin material 75 at the break portion 76 of the skin material 75, and the rear end portion is fixed to the right side frame 20R. There is. When the airbag device AB operates, the bag body that expands due to the gas generated by the inflator expands forward while being guided by the left and right force cloths 61 and 62, breaking the fractured portion 76 and occupant. It will be deployed on the side of.

The upper and lower portions (only one of them is shown) of the rear end of the force cloth 61 are fixed to the rivet-shaped force cloth mounting member 27, and the upper and lower force cloth mounting members 27 are engaged with the upper and lower mounting holes 25 of the right side frame 20R. By fitting, it is fixed to the right side frame 20R. The force cloth mounting member 27 is made of resin or the like, and has two through holes 27B and 27C in the body portion 27A. The rear end of the force cloth 61 is passed through the through hole 27B from the outside to the inside in the left-right direction in FIG. 8, and then fixed to the rod-shaped pin 27D and locked to the through hole 27C together with the pin 27D. , It is fixed to the force cloth mounting member 27. The body portion 27A of the force cloth mounting member 27 is formed with a retaining portion 27E for preventing the force cloth mounting member 27 from falling out of the mounting hole 25. On the other hand, in the force cloth 62, the upper and lower portions (only one of them is shown) at the rear end thereof are fixed to the hook-shaped force cloth attachment member 28 formed of resin or the like, and the upper and lower force cloth attachment members 28 are attached to the right side frame 20R. It is fixed to the right side frame 20R by hooking on the end of the rear end portion 20C.

In the present embodiment, since the two mounting holes 25 are formed so as to be offset vertically, the force cloth 61 can be stably supported by the two mounting holes 25 at the top and bottom. Further, in the present embodiment, since the side support devices 3L and 3R are fixed to the side frame 20 between the upper and lower two mounting holes 25, the interference between the force cloth mounting member 27 and the screw 92 can be suppressed and the two The side support devices 3L and 3R can be made more compact than the structure in which the side support devices are fixed above and below the mounting holes 25.

As shown in FIG. 4, the first cable 81 and the second cable 82 can slide on the tubular sheaths 81B and 82B, respectively, with one end and the other end (only one of which is shown) exposed to the outside. It is inserted in. Each cable 81, 82 has an engaging portion 83 at one end thereof (only the first cable 81 is shown) for engaging the one end portion of the cables 81, 82 with the pressing member 40 of the side support devices 3L, 3R. are doing. The engaging portion 83 is a metal member having a substantially cylindrical shape, and is fixed to one end of each of the cables 81 and 82 (see also FIG. 9). On the other hand, the second cable 82 has a connecting portion 84 at the other end for connecting the other end of the second cable 82 to one end of the first cable 81. The connecting portion 84 is a metal plate having a circular engaging hole 84A that can be engaged with the engaging portion 83, and is fixed to the other end of the second cable 82.

As shown in FIG. 9A, in the present embodiment, the first cable 81 and the second cable 82 engage the engaging portion 83 of the first cable 81 with the connecting portion 84 of the second cable 82. , Connected to each other. As described above, in the present embodiment, the first cable 81 and the second cable 82 can be easily connected by engaging the engaging portion 83 and the connecting portion 84, so that the side support drive mechanism 1 and the vehicle seat S can be assembled. Can be improved.

As shown in FIG. 3, the first cable 81 has other ends wound around a reel (not shown) provided in the actuator AC, and is pulled out upward from the actuator AC. The first cable 81 is arranged along the outer surface of the left side frame 20L, is curved above the left side support device 3L, passes behind the seat back frame F2, and one end thereof is inside the left side support device 3L. It's in from the top. As shown in FIGS. 9A and 9B, the first cable 81 that has entered the left side support device 3L is a left side support device when the engaging portion 83 is engaged with the lower end 41 of the pressing member 40. Engaged in 3L.

Returning to FIG. 3, the second cable 82 is pulled out from the left side support device 3L on the lower side opposite to the upper side on which one end of the first cable 81 enters the left side support device 3L. As a result, the first cable 81 and the second cable 82 can be arranged linearly in the left side support device 3L, so that the manageability of the cables 81 and 82 in the left side support device 3L can be improved. The second cable 82 pulled out from the left side support device 3L is arranged so that the rear side of the pressure receiving member 10 faces diagonally upward to the right, and one end thereof enters the right side support device 3R from above. As shown in FIGS. 9A and 9B, the second cable 82 that has entered the right side support device 3R is a right side support device when the engaging portion 83 is engaged with the lower end 41 of the pressing member 40. Engaged in the 3Rs.

As shown in FIGS. 6A and 6B, each of the cables 81 and 82 is located on the lateral side opposite to the lateral inner side on which the intermediate portion 43 protrudes from the intermediate portion 43 of the pressing member 40. Is arranged along the pressing member 40 (intermediate portion 43). As a result, the interference between the bending intermediate portion 43 and the cables 81 and 82 is suppressed, so that it is possible to suppress the load applied to the cables 81 and 82 when the intermediate portion 43 is bent. Further, since the engaging portion between one end of the cables 81 and 82 and the lower end 41 of the pressing member 40 is covered by the support member 50, the cables 81 and 82 and the cables 81 and 82 are engaged with the pressing member 40. It is possible to suppress the load from the occupant on the joint portion.

Next, while explaining the operation of the vehicle seat S configured as described above, the action and effect of the vehicle seat S of the present embodiment will be described.
In the state shown in FIGS. 5 and 6A, the other end of the first cable 81 is wound up by the occupant operating a controller (not shown) to rotate a reel (not shown) in the actuator AC in one direction. Then, one end of the first cable 81 and one end of the second cable whose other end is connected to the first cable 81 are pulled together.

Then, as shown in FIG. 6B, the lower end 41 of the pressing member 40 with which one end of each of the cables 81 and 82 (only one is shown) is engaged moves in the direction close to the upper end 42, and the intermediate portion 43 Bends so that it protrudes inward in the left-right direction. As a result, the support member 50 is pressed against the intermediate portion 43, so that the front end portion of the support member 50 rotates inward in the left-right direction about the shaft portion 33, as shown in FIG. As a result, the cushion material 70 and the skin material 75 are pressed by the support member 50 and swell toward the occupant side, so that the support position of the occupant can be changed.

In the present embodiment, since the first cable 81 and the second cable 82 are connected, they can be operated as one cable, so that, for example, the two cables individually extend from the actuator. The stroke when the cables 81 and 82 are operated can be made uniform as compared with the configuration in which the cables are taken out and branched in the middle and are connected to the side support devices respectively. As a result, the uniformity of operation of the left and right side support devices 3L and 3R can be improved.

Further, as shown in FIG. 3, the direction in which one end of the first cable 81 enters the left side support device 3L and the direction in which one end of the second cable 82 enters the right side support device 3R are the same, so that the left and right sides are the same. It is easy to make the configurations of the side support devices 3L and 3R symmetrical, and in the present embodiment, the left and right side support devices 3L and 3R are actually configured substantially symmetrically. As a result, the uniformity of operation of the left and right side support devices 3L and 3R can be further improved.

On the other hand, in the state shown in FIG. 10, the occupant operates a controller (not shown) to rotate the reel in the actuator AC in the direction opposite to the one direction, so that the winding state of the other end of the first cable 81 is changed. When loosened, one end of the first cable 81 and one end of the second cable are both pulled and loosened.

Then, as shown in FIG. 5, the front end portion of the support member 50 rotates outward in the left-right direction around the shaft portion 33 due to the load from the occupant and the restoring force of the skin material 75 and the cushion material 70. At this time, when the pressing member 40 is pushed by the support member 50, the shape of the bent intermediate portion 43 returns from the state shown in FIG. 6B to the state shown in FIG. 6A, and the lower end 41 is a cable. While pulling one end of 81, 82, it moves in a direction away from the upper end 42. As a result, the cushion material 70 and the skin material 75 can be retracted from the inflated state, and the support position of the occupant can be changed.

In the vehicle seat S, the support position by the support member 50 is adjusted according to the body shape of the seated occupant by adjusting the drive amount of the actuator AC by operating the controller, in other words, FIG. The amount of swelling of the portion of the seat back S2 facing the vicinity of the portion below the base of the occupant's arm (the portion where the support member 50 is arranged) can be arbitrarily adjusted.

In the present embodiment, since the guide portion 32 for guiding the movement of the lower end 41 of the pressing member 40 and the recess 56A for guiding the movement of the intermediate portion 43 are provided, the lower end 41 and the intermediate portion 43 can be moved satisfactorily. Can be done. As a result, the driveability of the side support devices 3L and 3R can be improved. Further, in the present embodiment, since the guide surface 32A of the guide portion 32 is inclined so as to face the occupant in the front-rear direction, the guide surface 32A and the occupant face each other, and the pressing member 40 and the support member The occupant can be supported in a well-balanced manner through the 50 and the like. Further, in the present embodiment, since the intermediate portion 43 of the pressing member 40 is arranged so as to abut on the bottom surface of the recess 56A, that is, near the center of the support member 50, the intermediate portion 43 stably supports the support member 50. This allows the occupants to be stably supported.

Further, in the present embodiment, as shown in FIGS. 5 and 10, a bead 54A thicker than other portions of the plate-shaped portion 54 is formed on the edge of the plate-shaped portion 54 of the support member 50. Therefore, damage to the cushion material 70 due to the rotation of the support member 50 can be suppressed. Further, in the present embodiment, as shown in FIGS. 6A and 6B, in the pressing member 40, the pair of protruding portions 43B first come into contact with the support member 50, and the bent portion 43A is difficult to abut. Therefore, it is possible to prevent the support member 50 from directly applying a load to the deformed bent portion 43A. As a result, the durability of the vehicle seat S provided with the side support drive mechanism 1 can be improved.

In the vehicle seat S described above, as shown in FIG. 6A, the pressing member 40 does not protrude significantly from the side frame 20 when the intermediate portion 43 is not bent. Therefore, such a pressing member The side support devices 3L and 3R including the 40 can be made compact to the left and right. Further, as shown in FIG. 4, since the fixing member 30 has a size that can be arranged between the upper and lower supported portions 51 and 52 of the supporting member 50, the fixing member 30 and the pressing member 40 supported by the fixing member 30 That is, the configuration for driving the support member 50 can be made compact vertically. As a result, in the present embodiment, the side support devices 3L and 3R can be made compact as a whole.

Further, in the vehicle seat S, as shown in FIG. 3, since the first cable 81 and the second cable 82 are connected, these can be handled as one cable, so that they extend from the actuator AC. The number of cables can be one. Further, since the actuator AC and the left side support device 3L are attached to the same left side frame 20L, the first cable 81 can be shortened. Further, in the present embodiment, one end of the first cable 81 is arranged so as to operate along the longitudinal direction of the left side frame 20L, and one end of the second cable 82 is arranged along the longitudinal direction of the right side frame 20R. Since the cables 81 and 82 are arranged so as to operate, the cables 81 and 82 can be arranged along the side frames 20L and 20R as a whole. As a result, it is possible to save space for arranging the cables 81 and 82 in the vehicle seat S.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. The specific configuration can be appropriately changed as described below without departing from the spirit of the present invention.

The configurations of the side support devices 3L and 3R shown in the above embodiment are examples, and the present invention is not limited to the configurations of the above embodiment. For example, in the above embodiment, the pressing member 40 and the supporting member 50 are fixed to the side frame 20 via the fixing member 30, but the pressing member and the supporting member are directly fixed to the side frame without providing the fixing member. You may be. By providing the fixing member 30 as in the above embodiment, it is not necessary to provide a configuration for attaching the pressing member 40 or the like to the metal side frame 20, so that the structure of the side frame 20 can be simplified and easily manufactured. can do.

Further, in the above-described embodiment, the pressing member 40 is composed of one component, but the present invention is not limited to this, and the pressing member may be composed of two or more components. As an example, as shown in FIGS. 11A and 11B, the pressing member 40 is composed of two parts, a pressing member lower portion 40A and a pressing member upper portion 40B, and when the lower end 41 moves in a direction close to the upper end 42. The portion that bends to the surface may be rotatably connected to the shaft portion 44 formed on one of the pressing member lower portion 40A and the pressing member upper portion 40B. According to such a configuration, the fatigue of the bent portion can be reduced as compared with the configuration in which the bent portion bends due to deformation, so that the durability of the pressing member 40 can be improved. Further, the support member 50 may be formed so that the reinforcing ribs 55 form a honeycomb structure, for example, as shown in FIG.

In the above embodiment, the first cable 81 and the second cable 82 are two cables configured as separate parts, but the present invention is not limited to this, and for example, FIGS. 13 (a) and 13 (b). As shown in the above, the first cable and the second cable may be one cable 85 integrally formed. According to this, since the number of parts can be reduced, the assemblability of the side support drive mechanism 1 and the vehicle seat S can be improved, and the cost can be reduced. Supplementally, the cable 85 shown in FIG. 13 has an engaging portion 83 engaged with the pressing member 40 of the right side support device 3R at one end, and is engaged with the pressing member 40 of the left side support device 3L in the middle portion. It has an engaging portion 83. The cable 85 corresponds to the first cable of the present invention from the other end to the engaging portion 83 in the middle portion to which the actuator is connected, which can be called the first cable portion, and the engaging portion 83 to the one end portion in the middle portion. The engaging portion 83 corresponds to the second cable of the present invention, which can also be called the second cable portion.

In the above embodiment, as shown in FIG. 5, the configuration in which the rotation shaft of the support member 50 (the shaft portion 33 of the fixing member 30) is arranged behind the rear end of the side frame 20 is illustrated. The present invention is not limited to this. For example, the rotation shaft of the support member may be arranged at a position overlapping the rear end of the side frame when viewed from the left and right direction. This also makes it possible to increase the amount of rotation of the support member as compared with the configuration in which the rotation shaft is arranged on the front side of the rear end of the side frame.

In the above embodiment, as shown in FIG. 3, the second cable 82 is fastened to the pressure receiving member 10, but the present invention is not limited to this, for example, the second cable is fastened to the side frame 20. It may be arranged without being fastened. Further, in the above embodiment, the second cable 82 passes after the pressure receiving member 10, but the present invention is not limited to this. For example, the second cable may pass under the pressure receiving member 40. Good. This also makes it possible to prevent the occupant from applying a load to the second cable. Further, in the above-described embodiment, the plate-shaped pressure receiving member 10 is exemplified as the load receiving member, but the present invention is not limited to this, and for example, a wire-shaped seat spring may be used.

In the above embodiment, as shown in FIG. 2, the airbag device AB is attached to the right side frame 20R and the actuator AC is attached to the left side frame 20L, but the present invention is not limited to this, for example. , The arrangement may be the reverse of the above embodiment. Further, the airbag device and the actuator may be mounted on the same side frame. Further, the actuator may be provided in the seat cushion S1 (see FIG. 1). Further, in the above-described embodiment, the electric actuator AC has been exemplified as the driving force generator, but the present invention is not limited to this. For example, in the driving force generator, the occupant winds up the cable by turning the steering wheel. It may be configured so that it can be loosened or loosened.

In the above embodiment, the vehicle seat S used in an automobile is exemplified as the vehicle seat, but the present invention is not limited to this, and other vehicle seats, for example, a seat used in a ship, an aircraft, or the like. It may be.

In the above embodiment, the first frame constitutes the left side frame 20L and the second frame constitutes the right side frame 20R, but the present invention is not limited to this, and for example, the first frame is the right side frame. The second frame may form the left side frame. Further, for example, the first frame may form the frame of the seat cushion, and the second frame may form the frame of the seat back.

In the above embodiment, the side support drive mechanism 1 is exemplified as the vehicle drive mechanism. In other words, in the above-described embodiment, the side support devices 3L and 3R are exemplified as the driving device. However, the present invention is not limited to this, and for example, the drive device may be a device other than the side support device. Further, the first drive device and the second drive device may be devices having the same configuration (including a symmetrical configuration) or devices having different configurations.

1 Side support drive mechanism 3L Left side support device 3R Right side support device 10 Pressure receiving member 20 Side frame 20L Left side frame 20R Right side frame 30 Fixing member 32 Guide part 40 Pressing member 41 Lower end 42 Upper end 43 Intermediate part 50 Support member 81 First cable 82 2nd cable 83 Engagement part 84 Connection part AC actuator S Vehicle seat S2 Seat back

Claims (2)

With the side frame
A side support device that is attached to the side frame and supports the occupant's upper body from the side,
It is equipped with an airbag device that is fixed to the side frame and protects the occupant from the side.
The side support device includes a support member that supports the upper body of the occupant from the left and right, and a fixing member that is fixed to the side frame.
The support member is arranged at a position overlapping with the airbag device in the height direction.
The fixing member has a shaft portion extending in the vertical direction for supporting the front end portion of the support member so as to be rotatable left and right, and is located between the upper end and the lower end of the shaft portion in the vertical direction. It is fixed to the side frame at the position and
The side frame has two mounting holes for mounting a force cloth that regulates the deployment direction of the bag body of the airbag device.
A vehicle seat characterized in that the support member is fixed to the side frame between two mounting holes . The support member rotates left and right around the shaft portion and is attached to the left and right inside of the side frame.
The air bag device, the left and right outer side frame and vehicle seat of claim 1, characterized in that disposed on the opposite side of the support member across the side frames.

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