JP2013018371A - Side support device - Google Patents

Abstract

[PROBLEMS] To stably hold a occupant on a vehicle seat against a large lateral acceleration acting on a vehicle, and to reliably deploy a side airbag without preventing the side airbag from inflating. A side support device is provided.
A support body 41 includes a metal paddle 41M as a main strength member, and at least the surface of the metal paddle 41M and the edge portion 41Md of the metal paddle 41M protruding laterally from a seat back side member 21R are combined. It is covered with resin. The support main body 41 includes a contact portion 413P that removably contacts the first shaft member 43 in the intermediate portion 41Pb of the support main body 41, and is pivotally supported with respect to the second shaft member 44. A hole 414P is provided in the base end portion 41Pc of the support main body 41, and when the front end portion 41Pa of the support main body 41 is pushed forward by the expansion of the side airbag 6, the contact portion 413P and the first shaft member 43 are in contact The contact is released and the second shaft member 44 is rotated around the center.
[Selection] Figure 3

Description

  The present invention relates to a side support device that is built in a side support portion of a seat back of a vehicle seat and holds a body side portion of a seated person.

  In recent years, along with the upgrading of vehicles, a vehicle seat with additional functions has been developed. One of them is a vehicle seat with a side support device. This is because the support structure built in the left and right side support parts of the seat back is operated forward by an electric motor or the like, the upper body of the seated person is sandwiched between the left and right support structures, and the body side part of the seated person is It is to hold. Accordingly, in a vehicle traveling in a corner or the like, the seated person can be stably held on the vehicle seat against a lateral load.

  10 and 11 show a side support device described in Patent Document 1 filed by the inventor. The side support device includes a pair of left and right paddle mechanisms that are operated by an operating cable, and a cable drive device (not shown) that pulls the operating cable. FIG. 10 is an exploded perspective view of the left paddle mechanism 8L, and FIG. 11 is a cross-sectional view illustrating the operating state of the left paddle mechanism 8L. The right paddle mechanism (not shown) is symmetrical with the left paddle mechanism 8L.

  As shown in FIG. 10, the left paddle mechanism 8L includes a support structure having a paddle main body 81 (support main body) that holds the side of the seated person, and a fixing for attaching the support structure to the left side frame 21L. A left mounting bracket 26L, and an operating cable 87 having one end fixed to the left mounting bracket 26L and the other end pulled by a cable driving device.

  The support structure includes a paddle body 81, a primary pin 83, a secondary pin 84, a pulley 85, and a move 86. The paddle body 81 is an integrally molded product made of a synthetic resin, and has a pair of mounting surfaces that are formed in a generally fin shape and capable of pressing the body side of the seated person, and project from the paddle part 811 in parallel with each other. 812. The mounting surface 812 is formed with an engaging groove 813 that is detachably engaged with the primary pin 83 and a holding hole 814 that is pivotally supported by the secondary pin 84.

  An elongated first guide hole 264a and a second guide hole 264b are formed in the left mounting bracket 26L attached to the seat back frame. A move 86 is held by a primary pin 83 and a secondary pin 84 inserted into the first and second guide holes 264a and 264b, respectively, and a pulley 85 is pivotally supported on the primary pin 83. One end of the inner cable 871 of the operating cable 87 is fixed to the left mounting bracket 26 </ b> L, the other end is connected to the cable driving device, and a midway portion between both ends is hung on the outer peripheral surface of the pulley 85.

  When the other end of the inner cable 871 is pulled by the cable driving device from the open position where the paddle body 81 does not restrain the seated person (the position indicated by the solid line in FIG. 11), the paddle body 81 together with the pulley 85 It rotates forward along the second guide holes 264a and 264b, and moves to a support position (a position indicated by a broken line in FIG. 11).

  When a side airbag (not shown) is disposed on the back side of the paddle portion 811 of the paddle body 81, when the side airbag is inflated, the engagement between the paddle body 81 and the primary pin 83 is released, and the paddle body 81 The vehicle rotates about the secondary pin 84 to the front of the vehicle seat. Thus, even when the paddle body 81 is in the open position, the side airbag can be deployed without being hindered from being inflated by the paddle body 81.

Japanese Patent Application No. 2010-41918

  The side support device described in Patent Document 1 uses, for example, a seat occupant for a vehicle with respect to a lateral acceleration of about 0.6 G (G is a gravitational acceleration) that is considered to act on the vehicle in a general traveling state of the vehicle. It is designed so that it can be held stably on the sheet. However, many drivers prefer more sporty driving, and in this case, a lateral acceleration of about 0.9 G may act on the vehicle.

  In order for the side support device described in Patent Document 1 to cope with a situation in which a lateral acceleration of about 0.9 G acts on the vehicle, it is desirable to increase the rigidity of the paddle body 81 made of synthetic resin. However, as shown in FIG. 11, since the gap between the cushion member 12a and the left side frame 21L is as narrow as about 1 cm, there is a limit to increase the rigidity by increasing the thickness of the paddle body 81 made of synthetic resin. is there.

  The present invention has been made in view of the above circumstances, and in a side support device built in a side support portion of a seat back of a vehicle seat equipped with a side airbag, with respect to a large lateral acceleration acting on the vehicle, It is an object of the present invention to provide a side support device that can stably hold a seated person on a vehicle seat and that can reliably deploy the side airbag without hindering the inflation of the side airbag.

In order to solve the above-mentioned problem, the structural features of the side support device according to claim 1 include an open position that is built in a side support portion of a seat back of a vehicle seat equipped with a side airbag and does not restrain a seated person. A support body movable between a support position for holding the body side portion of the seated person and a seat back side member, and a movement direction of the support body is defined at an intermediate portion of the support body. The first guide hole in the shape of a long hole extended in this manner, and the support body in the direction intersecting with the extending direction of the first guide hole and the moving direction of the support body together with the first guide hole A fixed portion having a long-hole-shaped second guide hole defined at the base end portion of the main body, and a first shaft member inserted into the first guide hole and movable in the extending direction of the first guide hole; Is inserted into the second guide hole, and a second shaft member movable in the extending direction of the second guide hole,
The support body has a metal paddle made of metal as a main strength member, and at least the surface of the metal paddle and the edge of the metal paddle protruding laterally from the seat back side member are covered with a synthetic resin. The support body includes a contact portion that removably contacts the first shaft member at the intermediate portion of the support body, and is pivotally supported with respect to the second shaft member. A support hole is provided in the base end portion of the support body, and when the distal end portion of the support body is pushed forward by the expansion of the side airbag, the contact portion and the first shaft member are in contact with each other. It is released and rotates around the second shaft member.

  The structural feature of the invention according to claim 2 is that, in the side support device according to claim 1, the support body is formed by superposing and integrating the metal paddle and a resin paddle made of synthetic resin. It is.

  According to a third aspect of the present invention, in the side support device according to the second aspect, the resin paddle is supported on the surface of the metal paddle by a plurality of protrusions formed on the back surface of the resin paddle. It is that.

  The structural feature of the invention according to claim 4 is the side support device according to claim 2 or 3, wherein the metal paddle includes a first pivot hole pivotally supported with respect to the second shaft member, The resin paddle includes a second pivot support hole that is pivotally supported with respect to the second shaft member, and an insertion portion into which a distal end portion of the metal paddle is inserted, and the distal end portion of the metal paddle is disposed on the resin After the insertion into the insertion portion of the paddle, the metal paddle and the resin paddle are integrated by inserting the second shaft member into the first pivot support hole and the second pivot support hole. .

  A structural feature of the invention according to claim 5 is the side support device according to any one of claims 2 to 4, wherein the metal paddle is pivotally supported with respect to the second shaft member. Each of the first pivot support holes, and the first pivot support hole is disposed on the side away from the center of the load acting on the support body in the vertical direction of the base end portion of the metal paddle. It is that.

  According to a sixth aspect of the present invention, in the side support device according to any one of the second to fifth aspects, the metal paddle removably contacts the first shaft member. The resin paddle includes a second contact portion that is detachably contacted with the first shaft member, and the resin paddle includes the second contact portion and the first shaft member. Means that the first contact portion of the metal paddle and the first shaft member can be contacted at all times except when the side airbag is inflated. It is that it can contact | abut only to.

  According to the first aspect of the present invention, the support body has a metal paddle as a main strength member, and at least the surface of the metal paddle and the edge portion of the metal paddle protruding laterally from the seat back side member are combined. It is covered with resin. In addition, the support main body includes an abutting portion that removably contacts the first shaft member at an intermediate portion of the support main body, and a support hole that is pivotally supported by the second shaft member. When the tip of the support body is pushed forward by the expansion of the side airbag, the contact between the contact portion and the first shaft member is released and the shaft rotates about the second shaft member. To do.

  Accordingly, the support main body using the metal paddle as the main strength member has a thickness that fits in a narrow gap between the cushion member of the seat back and the seat back side member, like the paddle main body 81 made of synthetic resin described in Patent Document 1. Nevertheless, high rigidity can be ensured. Thereby, according to the side support device of the present invention, it is possible to stably hold a seated person on the vehicle seat against a large lateral acceleration acting on the vehicle.

  In addition, since the edge of the metal paddle that protrudes laterally from the seat back side member is covered with the synthetic resin, when the side airbag disposed behind the support body is inflated, the side airbag The surface does not touch the metal paddle. Thereby, the side airbag can be prevented from being broken when the side airbag is inflated, so that the side airbag can be reliably deployed.

  Further, when the side airbag is inflated, the contact between the support main body and the first shaft member is released, and the support main body rotates about the second shaft member. Thereby, since the support body arrange | positioned ahead of a side airbag does not prevent expansion | swelling of a side airbag, it is possible to expand | deploy a side airbag reliably.

  As is well known, the support main body is incorporated in the left and right side support portions of the seat back, respectively, but the configuration of the invention according to claim 1 is equipped with at least the side airbags of the left and right side support portions of the seat back. It can be applied to the side that has been made. Of the left and right side support portions of the seat back, the configuration on the side where the side airbag is not provided may be the same as or different from the configuration according to the first aspect of the invention.

  According to the second aspect of the present invention, the support body is formed by superimposing and integrating the metal paddle and the resin paddle. In general, the metal paddle is formed by press molding, and the resin paddle is formed by injection molding.

  In order to ensure the rigidity of the metal paddle, it is necessary to perform uneven processing on the metal paddle. Since the seated person feels the unevenness of the surface of the support body through the cushion member of the seat back, the surface of the support body can be finished smoothly without using the uneven shape of the surface of the metal paddle as it is. desirable. Therefore, as in the invention according to claim 2, by covering the surface of the metal paddle with a resin paddle separate from the metal paddle, the surface of the support body can be smoothly and independently affected by the uneven shape of the metal paddle. It can be finished with high molding accuracy.

  Further, by making the metal paddle and the resin paddle separate, the degree of freedom of the shape of the metal paddle and the resin paddle is increased. Thereby, even when a support body having a different shape is used for each vehicle seat, it is possible to use metal paddles having the same shape in each support body, and cost reduction can be achieved by mass production of metal paddles.

  Compared to insert molding of the support body, the amount of resin in the resin paddle can be minimized as the synthetic resin does not enter the recess of the metal paddle, and the support body can be manufactured at low cost. It is.

  As described above, the metal paddle and the resin paddle are different in the shape of the opposing surfaces, and the metal paddle formed by press molding can obtain high molding accuracy like the resin paddle formed by injection molding. Hateful. Therefore, various gaps are generated between the surface of the metal paddle and the back surface of the resin paddle.

  According to the invention of claim 3, the resin paddle is supported on the surface of the metal paddle by the plurality of protrusions formed on the back surface of the resin paddle. As a result, even when gaps with various intervals occur between the surface of the metal paddle and the back surface of the resin paddle, the resin paddle can be securely attached to the metal paddle by adjusting the protrusion amount of the plurality of protrusions. Can be supported.

  According to the fourth aspect of the present invention, after the distal end portion of the metal paddle is inserted into the insertion portion of the resin paddle, the second shaft member is inserted into the first pivot support hole of the metal paddle and the second pivot support hole of the resin paddle. By doing so, the metal paddle and the resin paddle are integrated.

  Therefore, assembly when the metal paddle and the resin paddle are integrated is easy. In addition, since a dedicated part (bolt or the like) for integrating the metal paddle and the resin paddle is not necessary, an increase in the number of parts is suppressed, which is economical.

  According to the invention of claim 5, the metal paddle includes one first pivot hole pivotally supported with respect to the second shaft member, and the first pivot hole is a base end portion of the metal paddle. It is arrange | positioned in the side which is away from the action center of the load which acts on a support main body among the up-down directions.

  When the support body is pushed from the surface side by the load of the seated person, the support body tries to rotate about the first shaft member. A reaction force for stopping the rotation of the support body acts on the pivot hole. Here, when the shape of the support body is not up and down, the support body is twisted by a load acting on the support body, so when the support body is supported by a plurality of pivot holes, the support body The largest reaction force acts on the pivot hole that is farthest from the action center of the load acting on the first shaft member.

  Since the metal paddle as the main strength member is made of metal, it is possible to receive this reaction force with only one first pivot hole, and the arrangement of one first pivot hole is as described above. By doing so, it is possible to efficiently stop the rotation of the support body.

  As described above, a metal paddle formed by press molding is difficult to obtain high molding accuracy like a resin paddle formed by injection molding. Therefore, if two first pivot holes are formed in the metal paddle, it is difficult to insert the second shaft member into both first pivot holes due to the displacement of both first pivot holes. Or the second shaft member may be misaligned. By using only one first pivot hole as in the present invention, it is possible to prevent the occurrence of the above-described problem when the second shaft member is inserted into the first pivot hole.

  According to the invention of claim 6, the second contact portion of the resin paddle and the first shaft member can always contact each other except when the side airbag is inflated, and the first contact portion of the metal paddle. And the first shaft member can abut only when the support body is pushed from the surface side.

  When a load is not applied to the support body, the support body may vibrate due to vibration caused by running of the vehicle. At this time, if the first contact portion of the metal paddle and the metal first shaft member are in contact with each other, an unpleasant metal touch sound is generated from the contact portion. As in the present invention, the first contact portion of the metal paddle and the first shaft member can be contacted only when the support body is pushed from the surface side, thereby generating an unpleasant metal touch sound. It is possible to prevent.

  As described above, according to the present invention, in the side support device built in the side support part of the seat back of the vehicle seat equipped with the side airbag, the seated person can be detected against the large lateral acceleration acting on the vehicle. It is possible to provide a side support device that can be stably held on the seat and can reliably deploy the side airbag without hindering the expansion of the side airbag.

1 is a perspective view of a vehicle seat in which a side support device according to an embodiment of the present invention is built. 1 is a perspective view of a seat back frame to which a side support device according to an embodiment of the present invention is attached. It is a disassembled perspective view of the right paddle mechanism of the side support apparatus by one Embodiment of this invention. It is a perspective view of the paddle mechanism for right of the side support device by one embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line AA of the right paddle mechanism of the side support device shown in FIG. 4, showing a situation where the paddle body is held in an open position. FIG. 5 is a cross-sectional view taken along line AA of the right paddle mechanism of the side support device shown in FIG. 4, showing a state where the paddle body is held at a support position. It is the perspective view which looked at the paddle main body of the paddle mechanism for the right side of the side support apparatus by one Embodiment of this invention from the back surface. It is a disassembled perspective view of the paddle main body of the side support apparatus shown in FIG. It is the top view which looked at the paddle main body of the right paddle mechanism of the side support apparatus by one Embodiment of this invention from upper direction. It is a disassembled perspective view of the left paddle mechanism of the side support apparatus by a prior art. It is sectional drawing explaining the operation | movement condition of the left paddle mechanism of the side support apparatus by the prior art shown in FIG.

  A vehicle seat side support device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. In the description, the terms “up”, “down”, “left”, “right”, “front”, and “rear” refer to “up”, “down”, and “left” for a seated person sitting on the vehicle seat 1 with the seat back 12 of the vehicle seat 1 raised. , Right, front, back.

  In the description, the vicinity of the outer end of the vehicle seat 1 of the paddle main body 41 (consisting of the metal paddle 41M and the resin paddle 41P and corresponding to the support main body of the present invention) is referred to as a front end portion. The vicinity of the inner end portion of the sheet 1 is referred to as a base end portion, and a portion between the front end portion and the base end portion is referred to as an intermediate portion. Further, the surface of the paddle body 41 that holds the seated person is referred to as a front surface, and the surface opposite to the front surface is referred to as a back surface.

  In the description, the end of the operating cable 47 (including the inner cable 471 and the outer cable 472) on the right paddle mechanism 4R side and the left paddle mechanism 4L side is referred to as one end, and the end on the cable driving device 5 side. Is called the other end.

  The present embodiment is an embodiment in which the synthetic resin paddle body 81 in the side support device described in Patent Document 1 is changed to a paddle body 41 made of a metal and a synthetic resin. Since the configuration of each part other than the paddle body 41 and the operation of the side support device in the present embodiment are substantially the same as those of the side support device described in Patent Document 1, Patent Document 1 can be referred to for details.

  As shown in FIG. 1, a vehicle seat 1 includes a seat cushion 11 on which a seated person is seated, and a seat back 12 that is attached to the rear end portion of the seat cushion 11 so as to be rotatable in the front-rear direction and serves as a backrest of the seated person. It has. A headrest 13 that supports the head of the seated person is attached to the upper end of the seat back 12.

  A right side support portion 121R that protrudes forward is formed at the right end of the seat back 12 in order to hold the upper body of the seated person from the right side. Further, a left side support portion 121L protruding forward is formed at the left end portion of the seat back 12 so as to hold the upper body of the seated person from the left side.

  A right paddle mechanism 4R of the side support device 3 to be described later is accommodated in the right side support portion 121R, and a left paddle mechanism 4L is accommodated in the left side support portion 121L, and the right paddle mechanism 4R and the left paddle are accommodated. By operating the mechanism 4L, the right side support part 121R and the left side support part 121L each hold the body side part of the seated person.

  A seat back frame 2 is built in the seat back 12 (shown in FIG. 2). The seat back frame 2 has a right side frame 21R extending in the up-down direction at the right end and a left side frame 21L extending in the up-down direction at the left end (the right side frame 21R and the left side frame 21L correspond to the seat back side member of the present invention). And an upper cross member 22 that connects the right side frame 21R and the left side frame 21L to each other at the upper end, and a lower cross member 23 that connects the right side frame 21R and the left side frame 21L to each other at the lower end.

  Further, below the upper cross member 22, a reinforcement reinforcement 24 for connecting the right side frame 21R and the left side frame 21L is provided. Furthermore, a pair of headrest attachment portions 25 are formed in the upper cross member 22 so that a support rod (not shown) protruding from the lower surface of the headrest 13 is inserted. The seat back frame 2 formed in this way supports the seat back 12 from the inside.

  As shown in FIG. 2, the right paddle mechanism 4R and the side airbag 6 of the side support device 3 are attached to the right side frame 21R. Further, the left paddle mechanism 4L and the cable driving device 5 of the side support device 3 are attached to the left side frame 21L. Patent Document 1 can be referred to for the configuration and operation of the cable driving device 5.

  FIG. 3 shows an exploded perspective view of the right paddle mechanism 4R. FIG. 4 shows a perspective view of the right paddle mechanism 4R. 5 and 6 show AA cross-sectional views in FIG. 4 and 5 show a situation where the paddle body 41 of the right paddle mechanism 4R is held in the open position lowered rearward so as not to restrain the seated person. FIG. 6 shows a situation in which the paddle body 41 reaches the support position for holding the seated person via the cushion member 12a by rotating the paddle body 41 forward from the open position.

  Hereinafter, the right paddle mechanism 4R will be described with reference to FIGS. The left paddle mechanism 4L (not shown) is different from the right paddle mechanism 4R only in that it is symmetrical, and therefore the left paddle mechanism 4L is not particularly described.

  The right mounting bracket 26R (corresponding to the fixing portion of the present invention) is formed of a press-formed steel plate and includes a flat plate portion 261 fixedly attached to the right side frame 21R. A plurality of mounting holes 262 into which mounting bolts (not shown) are inserted pass through the flat plate portion 261.

  A pair of guide surface portions 263 protrude from the flat plate portion 261 in parallel with each other with a predetermined interval. Both guide surface portions 263 are formed in the same shape as each other, and the first guide hole 264a and the second guide hole 264b are formed through each guide surface portion 263. The first guide hole 264 a and the second guide hole 264 b extend so as to define the moving direction of the paddle body 41.

  The first guide holes 264a formed in each guide surface portion 263 are provided at the same position in each guide surface portion 263 and have the same long hole shape. As shown in FIGS. 5 and 6, the pair of first guide holes 264 a both extend substantially in the front-rear direction of the vehicle seat 1.

  On the other hand, the second guide holes 264b formed in each guide surface portion 263 are also provided at the same position in each guide surface portion 263 and have the same long hole shape. As shown in FIGS. 5 and 6, each of the pair of second guide holes 264b extends substantially in the width direction of the vehicle seat 1, and moves slightly forward in FIGS. 5 and 6 as it goes outward in the width direction. It is formed as follows. Accordingly, the second guide hole 264b extends in a direction intersecting with the extending direction of the first guide hole 264a.

  A rectangular bridge portion 265 is formed at the front end in FIGS. 5 and 6 of the right mounting bracket 26R so as to connect both guide surface portions 263. As shown in FIG. 3, a notch portion 266 that engages with one end portion of an inner cable 471 described later is provided at an end portion of the bridge portion 265 located on the flat plate portion 261 side. A hook 263a for holding a return spring 48 described later is formed at the rear end portion of the upper guide surface portion 263 of the right mounting bracket 26R.

  Each guide surface portion 263 is provided with a pair of guide plates 42 having substantially the same planar shape as the guide surface portion 263. Each guide plate 42 is integrally formed of a material having a low coefficient of friction such as a polyamide resin, but is not limited thereto. The guide plate 42 is formed of the first guide hole 264a and the second guide hole 264b, respectively. A loop-shaped guide flange that can be fitted so as to cover the inner peripheral surface is formed.

  A primary pin 43 (corresponding to the first shaft member of the present invention) is movably inserted into the first guide hole 264a of each guide surface portion 263. The primary pin 43 is formed by a columnar shaft portion and a retaining flange portion provided at one end thereof. Further, a clip groove that engages with the C clip 43a is formed in the shaft portion.

  A secondary pin 44 (corresponding to the second shaft member of the present invention) is movably inserted into the second guide hole 264b of each guide surface portion 263. The secondary pin 44 is also formed by a columnar shaft portion and a retaining flange portion provided at one end thereof.

  The pulley 45 is integrally formed in a disc shape from a synthetic resin material. An insertion hole into which the primary pin 43 is inserted is formed at the center of the pulley 45. The pulley 45 is rotatably supported with the primary pin 43 as a pivot shaft. Also, a single cable slit on which an inner cable 471 (to be described later) can be hung is formed on the perfect outer peripheral surface of the pulley 45.

  The move 46 is integrally formed of a synthetic resin material. The thickness of the move 46 is equal to the distance between the two guide surface portions 263 so that the move 46 can be disposed without rattling between the two guide surface portions 263 of the right mounting bracket 26R. The move 46 is formed to have a length extending between the first guide hole 264a and the second guide hole 264b, and penetrates in the thickness direction in which the primary pin 43 and the secondary pin 44 are inserted. Two insertion holes are provided. A pulley 45 is rotatably supported on the side of the move 46 where the primary pin 43 in the longitudinal direction is inserted.

  The operation cable 47 is formed by the inner cable 471 described above and the outer cable 472 that covers the inner cable 471 so as to be slidable (relatively movable). An outer end portion 471a having an enlarged diameter is formed at one end portion of the inner cable 471.

  The paddle body 41 is formed by superimposing a metal paddle 41M made of metal as a main strength member and a resin paddle 41P made of synthetic resin as a covering member. FIG. 7 is a perspective view of the paddle body 41 of the right paddle mechanism 4R as seen from the back side, and FIG. 8 is an exploded perspective view of the paddle body 41 as seen from the back side.

  As shown in FIG. 7, the resin paddle 41P covers the surface of the metal paddle 41M and the edge portion 41Md of the metal paddle 41M. In particular, the resin paddle 41P covers the edge portion 41Md (shown in FIG. 5) of the metal paddle 41M protruding laterally (rightward) from the right side frame 21R. Etc. are prevented.

  The metal paddle 41M is integrally formed by press forming of a steel plate, is formed in a generally fin shape that is wide toward the tip, and a paddle portion 411M that can press the side of the seated person through the resin paddle 41P, and a paddle portion And a pair of mounting surfaces 412M protruding from 411M in parallel to each other. The paddle portion 411M is subjected to uneven processing in order to increase rigidity. Each mounting surface 412M is divided into a surface on the intermediate portion 41Mb side and a surface on the base end portion 41Mc side. Each mounting surface 412M is formed so that the dimension between the mounting surfaces 412M is slightly larger than the distance between the respective guide surface portions 263 so as to be positioned outside the respective guide surface portions 263 of the right mounting bracket 26R. .

  Each attachment surface 412M located in the intermediate portion 41Mb is formed with a first contact portion 413M that contacts the primary pin 43 in a detachable manner. Each first contact portion 413M has a linear shape so as to be in line contact with the primary pin 43. Thereby, compared with the case where the shape of the first contact portion 413M is curved (notched), the outline of the mounting surface 412M is obtuse, thereby reducing the danger to peripheral members such as airbags. be able to. In addition, a first holding hole 414M (corresponding to the pivot hole and the first pivot hole of the present invention) pivotally supported by the secondary pin 44 is formed in the upper mounting surface 412M located at the base end portion 41Mc. ing. The metal paddle 41M is pivotally supported on the secondary pin 44 by the one first holding hole 414M.

  As shown in FIG. 4, the shape of the paddle body 41 is not vertically targeted, and the center of action of the load acting on the paddle body 41 is greater than the longitudinal center of the primary pin 43 and the secondary pin 44. Located below. For this reason, the paddle body 41 is twisted by the load acting on the paddle body 41 and is larger on the side farther from the center of action of the load acting on the paddle body 41 in the vertical direction of the base end portion 41Mc of the metal paddle 41M. Reaction force acts. Accordingly, the first holding hole 414M is formed only on the upper mounting surface 412M on which this large reaction force acts.

  The resin paddle 41P is integrally formed by injection molding of a synthetic resin, is formed in a generally fin shape that becomes wider toward the tip, and can press the side of the seated person, and the paddle portion 411P is parallel to the paddle portion 411P. A pair of protruding mounting surfaces 412P is provided. The surface of the paddle portion 411P is a smooth surface that matches the surface shape of the cushion member 12a (shown in FIG. 5) disposed on the front surface of the paddle portion 411P. Each mounting surface 412P is formed such that the dimension between each mounting surface 412P is slightly larger than the distance between each mounting surface 412M so as to cover the outside of the pair of mounting surfaces 412M of the metal paddle 41M.

  Each mounting surface 412P has a second contact portion 413P that is detachably contacted with the primary pin 43, and a second holding hole 414P that is pivotally supported by the secondary pin 44 (the pivot hole and the second pivot hole of the present invention). Corresponding to the above). Each of the second contact portions 413P has a curved shape (notch shape) so as to be in surface contact with the primary pin 43. A hook 415P for holding a return spring 48 described later is formed on the upper mounting surface 412P of the resin paddle 41P.

  Six protrusions 416P are formed on the back surface of the paddle portion 411P of the resin paddle 41P (four of the six are shown in FIG. 8). The paddle part 411P of the resin paddle 41P is supported on the surface of the paddle part 411M of the metal paddle 41M by at least three of the six protrusions 416P. That is, the protrusion 416P maintains a predetermined distance between the back surface of the paddle portion 411P of the resin paddle 41P and the front surface of the paddle portion 411M of the metal paddle 41M.

  Two insertion portions 417P into which the distal end portion 41Ma of the metal paddle 41M is inserted are formed at the distal end portion 41Pa on the back surface of the paddle portion 411P of the resin paddle 41P. As shown in FIG. 7, by inserting the tip end portion 41Ma of the metal paddle 41M into the both insertion portions 417P of the resin paddle 41P, the two first contact portions 413M and the two second contact portions 413P described above are inserted. The position is aligned. Further, the positions of the one first holding hole 414M and the two second holding holes 414P described above are aligned. Then, the metal paddle 41M and the resin paddle 41P are integrated by inserting the secondary pin 44 into the first holding hole 414M and the second holding hole 414P.

  FIG. 9 shows a plan view of the paddle body 41 as viewed from above. FIG. 9 shows a state where the paddle body 41 is not pushed from the front side. In this state, the second contact portion 413P of the resin paddle 41P and the primary pin 43 are in contact, and the first contact portion 413M of the metal paddle 41M and the primary pin 43 are not in contact. That is, the first contact portion 413M is slightly offset outward in the radial direction of the primary pin 43 from the second contact portion 413P. When the paddle body 41 is pushed from the front side, the first contact portion 413M of the metal paddle 41M and the primary pin 43 come into contact with each other, and the load acting on the paddle body 41 can be received by the metal paddle 41M. It has become.

  Next, the assembly and overall configuration of the right paddle mechanism 4R will be described. A guide plate 42 is mounted in advance in the first guide hole 264a and the second guide hole 264b of the right mounting bracket 26R.

  A primary pin 43 is inserted from above into the first guide hole 264a of the right mounting bracket 26R attached from the front inside the right side frame 21R. The primary pin 43 is integrated with the second contact portion 413P above the resin paddle 41P, the first contact portion 413M above the metal paddle 41M, the first guide hole 264a above the right mounting bracket 26R, and the move 46. The insertion hole of the pulley 45, the first guide hole 264a below the right mounting bracket 26R, the first contact part 413M below the metal paddle 41M, and the second contact part 413P below the resin paddle 41P are arranged in this order. The pulley 45 and the move 46 are inserted and held between both guide surface portions 263 of the right mounting bracket 26R.

  A C clip 43a is mounted in the clip groove of the primary pin 43 projecting downward from the move 46 (located between the lower surface of the move 46 and the guide surface portion 263), and the pulley 45 and the move 46 are rattled. It is preventing.

  On the other hand, the secondary pin 44 is inserted into the second guide hole 264b of the right mounting bracket 26R from above. The secondary pin 44 includes a second holding hole 414P above the resin paddle 41P, a first holding hole 414M of the metal paddle 41M, a second guide hole 264b above the right mounting bracket 26R, an insertion hole for the move 46, and a right mounting. The second guide hole 264b below the bracket 26R and the second holding hole 414P below the resin paddle 41P are inserted in this order, and the end of the move 46 is held between both guide surface portions 263 of the right mounting bracket 26R. . A push nut 44a is attached to the end of the secondary pin 44 projecting downward from the second holding hole 414P to prevent it from coming off (shown in FIG. 3).

  Thereby, the paddle body 41 is integrated with the primary pin 43, the secondary pin 44, the pulley 45, and the move 46, and the primary pin 43 and the secondary pin 44 are regulated by the first guide hole 264a and the second guide hole 264b, It is assembled to move freely between the open position and the support position. In this state, a return spring 48 is stretched between the hook 415P of the paddle body 41 and the hook 263a of the right mounting bracket 26R.

  An intermediate portion between both ends of the inner cable 471 of the operating cable 47 is wound around a cable slit formed on the outer peripheral surface of the pulley 45 integrated with the move 46. Further, one end portion of the inner cable 471 is inserted into the notch portion 266 so that the outer end portion 471a protrudes on the bridge portion 265 of the right mounting bracket 26R, and then the fixing clip 267 is attached to the bridge portion 265 ( FIG. 5 shows). Thus, one end of the inner cable 471 is firmly fixed to the right mounting bracket 26R. The other end of the inner cable 471 is connected to the cable driving device 5. One end of the outer cable 472 is fixed to the move 46 so as to be movable together with the move 46.

  Next, the operation of the right paddle mechanism 4R will be described with reference to FIGS. Since the operation mechanism of the right paddle mechanism 4R and the operation mechanism of the left paddle mechanism 8L (shown in FIG. 11) in the side support device described in Patent Document 1 are the same, refer to Patent Document 1 for details regarding the operation. Can do.

  When the cable driving device 5 connected to the other end of the inner cable 471 of the operating cable 47 is in an inoperative state and the inner cable 471 is not pulled, the paddle main body 41 and the right mounting bracket 26R are not connected. The paddle body 41 is held in an open position lowered rearward so as not to restrain the seated person by the elastic force of the stretched return spring 48 and the restoring force of the cushion member 12a (shown in FIG. 5).

  When the cable driving device 5 is operated and the other end portion of the inner cable 471 to which one end portion is fixed is pulled leftward in FIG. 5, tension is generated in the inner cable 471. When the tension urges the pulley 45 in the extending direction (longitudinal direction) of the first guide hole 264 a and exceeds the elastic force of the return spring 48 and the cushion member 12 a, the primary pin 43 is connected to the pulley 45 and the move 46. As a unit, it moves forward in FIG. 5 while being regulated by the first guide hole 264a.

  On the other hand, the movement of the move 46 moves the secondary pin 44 to the right and slightly forward in FIG. 5 while being regulated by the second guide hole 264b. Accordingly, the pulley 45, the move 46, and the paddle body 41 move together while maintaining the posture by the first guide hole 264a and the second guide hole 264b, and the paddle body 41 moves the seated person through the cushion member 12a. The support position to be held is reached (shown in FIG. 6).

  When returning the paddle body 41 in the support position to the open position, the cable driving device 5 is operated in the opposite direction to that described above, and the other end portion of the inner cable 471 that has been pulled is returned. As a result, the tension of the inner cable 471 decreases, and the paddle main body 41 moves together with the pulley 45, the move 46, and one end of the outer cable 472 by the elastic force of the return spring 48 and the restoring force of the cushion member 12a. Return to.

  In the paddle body 41, the first contact portion 413M and the second contact portion 413P are detachably contacted with the primary pin 43, and rotate around the secondary pin 44 in the first holding hole 414M and the second holding hole 414P. It is made possible. For this reason, when the front end portion 41Pa of the paddle body 41 is pushed forward by the expansion of the side airbag 6, the contact between the paddle body 41 and the primary pin 43 is released as shown by a one-dot chain line in FIG. Then, the paddle body 41 rotates around the secondary pin 44 in front of the vehicle seat 1.

  According to the present embodiment, the paddle main body 41 has the metal paddle 41M as a main strength member, and the resin paddle 41P covers the surface of the metal paddle 41M and the edge 41Md of the metal paddle 41M. In particular, the resin paddle 41P covers the edge portion 41Md of the metal paddle 41M that protrudes laterally (rightward) from the right side frame 21R.

  Further, the paddle body 41 includes a first contact portion 413M and a second contact portion 413P that are detachably contacted with the primary pin 43 in the intermediate portions 41Pb and 41Mb of the paddle body 41, and with respect to the secondary pin 44. The first holding hole 414M and the second holding hole 414P pivotally supported are provided in the base end portions 41Pc and 41Mc of the paddle main body 41, and the front end portion 41Pa of the paddle main body 41 is pushed forward by the expansion of the side airbag 6. Sometimes, the contact between the paddle main body 41 and the primary pin 43 is released, and the paddle main body 41 rotates about the secondary pin 44 to the front of the vehicle seat 1.

  Therefore, the paddle main body 41 having the metal paddle 41M as a main strength member can ensure high rigidity while having a thickness that fits in a narrow gap between the cushion member 12a of the seat back 12 and the right side frame 21R. . Thereby, according to the side support apparatus 3 of this embodiment, a seated person can be stably hold | maintained to the vehicle seat 1 with respect to the big lateral acceleration which acts on a vehicle.

  Further, since the edge portion 41Md of the metal paddle 41M protruding laterally (rightward) from the right side frame 21R is covered with the resin paddle 41P, the side airbag 6 disposed behind the paddle main body 41 is provided. When inflating, the surface of the side airbag 6 does not contact the metal paddle 41M. Thereby, since the side airbag 6 can be prevented from being broken when the side airbag 6 is inflated, the side airbag 6 can be reliably deployed.

  Further, when the side airbag 6 is inflated, the contact between the paddle body 41 and the primary pin 43 is released, and the paddle body 41 rotates around the secondary pin 44. Thereby, since the paddle body 41 disposed in front of the side airbag 6 does not hinder the expansion of the side airbag 6, the side airbag 6 can be reliably deployed.

  Further, according to the present embodiment, the paddle main body 41 is formed by superimposing and integrating the metal paddle 41M formed by press molding and the resin paddle 41P formed by injection molding.

  Therefore, by covering the surface of the metal paddle 41M with the resin paddle 41P separate from the metal paddle 41M, the surface of the paddle body 41 is finished with a smooth and high molding accuracy without being influenced by the uneven shape of the metal paddle 41M. be able to. Thereby, the seated person does not feel a sense of incongruity due to the unevenness of the surface of the paddle body 41 via the cushion member 12a of the seat back 12.

  Further, by making the metal paddle 41M and the resin paddle 41P separate, the degree of freedom in the shapes of the metal paddle 41M and the resin paddle 41P is increased. Thereby, even when a paddle body having a different shape is used for each vehicle seat, the metal paddle 41M having the same shape can be used in each paddle body, and the cost can be reduced by mass production of the metal paddle 41M. .

  Compared with the case where the paddle body 41 is insert-molded, the resin amount of the resin paddle 41P can be minimized because the synthetic resin does not enter the recess of the metal paddle 41M, and the paddle body 41 is manufactured at a low cost. Is possible.

  According to this embodiment, the resin paddle 41P is supported on the surface of the metal paddle 41M by the six protrusions 416P formed on the back surface of the resin paddle 41P. Thus, even when gaps with various intervals are generated between the front surface of the metal paddle 41M and the back surface of the resin paddle 41P, the resin paddle 41P is adjusted by adjusting the protrusion amount of the six protrusions 416P. The metal paddle 41M can be reliably supported.

  Further, according to the present embodiment, after the distal end portion 41Ma of the metal paddle 41M is inserted into the both insertion portions 417P of the resin paddle 41P, the first holding hole 414M of the metal paddle 41M and the second holding hole 414P of the resin paddle 41P are inserted. By inserting the secondary pin 44, the metal paddle 41M and the resin paddle 41P are integrated. Therefore, assembly when the metal paddle 41M and the resin paddle 41P are integrated is easy. In addition, since a dedicated part (bolt or the like) for integrating the metal paddle 41M and the resin paddle 41P is not required, an increase in the number of parts is suppressed, which is economical.

  Further, according to the present embodiment, the metal paddle 41M includes one first holding hole 414M that is pivotally supported with respect to the secondary pin 44, and the first holding hole 414M is a base end portion of the metal paddle 41M. Of the vertical direction of 41 Mc, it is arranged on the upper side away from the center of action of the load acting on the paddle body 41. As described above, the paddle body 41 is twisted by the load acting on the paddle body 41, and a reaction force larger than the lower side acts on the upper side in the vertical direction of the base end portion 41Mc of the metal paddle 41M. Therefore, it is possible to efficiently stop the rotation of the paddle body 41 by forming the first holding hole 414M only on the upper mounting surface 412M on which this large reaction force acts.

  Further, since the metal paddle 41M, which is the main strength member, is made of metal, it is possible to receive this reaction force with only one first holding hole 414M. In addition, in the metal paddle 41M formed by press molding, if the first holding holes 414M are formed on the upper side and the lower side of the base end portion 41Mc of the metal paddle 41M, the positional deviation between the first holding holes 414M. Therefore, a problem easily occurs when the secondary pin 44 is inserted into both the first holding holes 414M. Therefore, as in the present embodiment, by using only one first holding hole 414M, it is possible to prevent the occurrence of problems when the secondary pin 44 is inserted into the first holding hole 414M.

  Further, according to the present embodiment, the second contact portion 413P of the resin paddle 41P and the primary pin 43 can always contact each other except when the side airbag 6 is inflated, and the first contact of the metal paddle 41M. The contact portion 413M and the primary pin 43 can abut only when the paddle body 41 is pushed from the front side. Therefore, when no load is applied to the paddle body 41, the first contact portion 413M of the metal paddle 41M and the primary pin 43 are not in contact with each other. It is possible to prevent the generation of sound.

<Other embodiments>
The present invention is not limited to the above-described embodiments, and can be modified or expanded as follows.
For example, in the present embodiment, the operation cable 47 is pulled by the cable driving device 5 and the paddle body 41 is moved together with the pulley 45. However, this is a method for moving the paddle body 41 from the open position to the support position. It is not limited to. One of the first shaft member (primary pin 43) movable in the extending direction of the first guide hole 264a and the second shaft member (secondary pin 44) movable in the extending direction of the second guide hole 264b Alternatively, various methods can be used as long as the configuration defines the moving direction of the paddle body 41 by moving both.

  For example, in addition to the method using the operating cable 47 of the present embodiment, the paddle body 41 can be moved by various methods such as an operating rod, a gear, and a link. In addition, in this embodiment, although the primary pin 43 and the secondary pin 44 which are pin members which have a column-shaped axial part are used, if it is a member used as a shaft, a 1st shaft member and a 2nd shaft member are used. The shape is not limited.

  In this embodiment, the metal paddle 41M and the resin paddle 41P formed separately are integrated as a paddle body 41, but the outer periphery of the metal paddle 41M is made of synthetic resin by insert molding. It can also be a coated paddle body.

  In the present embodiment, the resin paddle 41P is supported on the surface of the metal paddle 41M by the six protrusions 416P formed on the back surface of the resin paddle 41P. However, the number of protrusions 416P is not limited to six. Further, the back surface of the resin paddle 41P and the front surface of the metal paddle 41M may be brought into direct contact without forming the protrusion 416P.

  Further, in the present embodiment, after the distal end portion 41Ma of the metal paddle 41M is inserted into both the insertion portions 417P of the resin paddle 41P, the secondary pin 44 is inserted into the first holding hole 414M and the second holding hole 414P. The metal paddle 41M and the resin paddle 41P are integrated. However, the method of integrating the metal paddle 41M and the resin paddle 41P is not limited to this. For example, it can be integrated using a bolt or the like, or integrated by claw fitting.

  Further, in the present embodiment, the metal paddle 41M includes one first holding hole 414M that is pivotally supported with respect to the secondary pin 44, but the upper side and the lower side of the base end portion 41Mc of the metal paddle 41M. A first holding hole 414M may be formed in each of the first and second holes.

  In the present embodiment, the first contact portion 413M of the metal paddle 41M is slightly offset outward in the radial direction of the primary pin 43 from the second contact portion 413P of the resin paddle 41P. However, the first contact portion 413M and the second contact portion 413P may simultaneously contact the primary pin 43 without offsetting the first contact portion 413M and the second contact portion 413P.

  The present invention is applicable not only to a vehicle seat for a driver seat and a vehicle seat for a passenger seat, but also to a seat for a middle seat or a seat for a rear seat.

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 12 ... Seat back 121R ... Right side port part 21R ... Right side frame (seat back side member)
26R: Right mounting bracket (fixed part)
264a ... 1st guide hole 264b ... 2nd guide hole 3 ... Side support device 41 ... Paddle main body (support main body) 41M ... Metal paddle 41Ma ... Tip part 41Mc ... Base end part 41Md ... Edge end part 413M ... 1st contact part 414M ... 1st holding hole (1st pivot support hole) 41P ... Resin paddle 41Pa ... Tip part 41Pb ... Intermediate part 41Pc ... Base end part 413P ... 2nd contact part 414P ... 2nd holding hole (2nd pivot support hole) 416P ... Projection 417P ... Insertion part 43 ... Primary pin (first shaft member)
44 ... Secondary pin (second shaft member)
6 ... Side airbag

Claims (6)

A support body that is built in a side support portion of a seat back of a vehicle seat equipped with a side airbag and is movable between an open position that does not restrain the seated person and a support position that holds the side part of the seated person. ,
A first guide hole having a long hole shape, which is fixedly provided on a seat back side member and extends so as to define a moving direction of the support body at an intermediate portion of the support body, and an extension of the first guide hole. A fixing portion extending in a direction intersecting with the installation direction and having a second guide hole having a long hole shape that defines the movement direction of the support body together with the first guide hole at the base end portion of the support body;
A first shaft member inserted into the first guide hole and movable in the extending direction of the first guide hole;
A second shaft member inserted in the second guide hole and movable in the extending direction of the second guide hole;
With
The support body has a metal paddle made of metal as a main strength member, and at least the surface of the metal paddle and the edge of the metal paddle protruding laterally from the seat back side member are covered with a synthetic resin. Has been
The support body includes a contact portion that removably contacts the first shaft member at the intermediate portion of the support body, and a pivot hole that is pivotally supported by the second shaft member. In the base end portion of the support body, when the front end portion of the support body is pushed forward by the expansion of the side airbag, the contact between the corresponding contact portion and the first shaft member is released, A side support device that rotates about the second shaft member.   The side support device according to claim 1, wherein the support body is formed by superimposing the metal paddle and a synthetic resin resin paddle on top of each other.   The side support device according to claim 2, wherein the resin paddle is supported on the surface of the metal paddle by a plurality of protrusions formed on the back surface of the resin paddle. The metal paddle includes a first pivot hole pivotally supported with respect to the second shaft member,
The resin paddle includes a second pivot hole pivotally supported with respect to the second shaft member, and an insertion portion into which a tip end portion of the metal paddle is inserted,
After inserting the tip of the metal paddle into the insertion portion of the resin paddle, inserting the second shaft member into the first pivot hole and the second pivot hole, thereby The side support apparatus of Claim 2 or 3 which integrates a resin paddle. The metal paddle includes one first pivot hole pivotally supported with respect to the second shaft member,
The said 1st pivot hole is arrange | positioned in the up-down direction of the base end part of the said metal paddle in the side away from the action | operation center of the load which acts on the said support main body. The side support apparatus as described in any one. The metal paddle includes a first contact portion that removably contacts the first shaft member,
The resin paddle includes a second contact portion that removably contacts the first shaft member,
The second contact portion of the resin paddle and the first shaft member can always contact each other except when the side airbag is inflated, and the first contact portion of the metal paddle and the first contact portion The side support device according to any one of claims 2 to 5, wherein the shaft member can abut only when the support main body is pushed from the surface side.

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