JP7268593B2 - frame cover - Google Patents

Description

The present invention relates to frame covers. More specifically, it relates to a resin frame cover provided in a covered area of a cushion side frame covered by a seat side shield.

A configuration in which resin seat side shields are arranged on the side surfaces of the seat is known (Patent Document 1). The seat side shield is a combination of an outer side shield that covers the side frame of the seat cushion from the outside of the seat and an inner side shield that covers the side frame of the seat from the inside of the seat. The outer side shield and the inner side shield are integrally assembled with each other by snap-fitting the engaging portions formed on the respective sides.

Japanese Patent No. 6527418

There is a risk that the outer side shield will be pushed out of engagement with the inner side shield by the deployment pressure of the seat side airbag. At that time, it is desirable that the seat side airbag does not come into contact with the side frame exposed by the expansion of the outer side shield. Accordingly, the present invention provides a frame cover that prevents the seat side airbag from coming into contact with the cushion side frame even if the seat side shield expands due to the deployment pressure of the seat side airbag.

In order to solve the above problems, the frame cover of the present invention employs the following means.

That is, the frame cover of the present invention is a resin-made frame cover provided in the covered area of the cushion side frame covered by the seat side shield. The frame cover has a covering portion covering the edge of the cushion side frame facing the expansion region where the seat side airbag of the seat side shield expands under pressure of the seat side airbag.

According to the above configuration, the edge of the cushion side frame facing the spread region of the seat side shield is covered with the covering portion of the frame cover. As a result, even if the seat side shield is deployed by the deployment pressure of the seat side airbag, the seat side airbag can be prevented from contacting the edge of the cushion side frame.

Moreover, the frame cover of the present invention may be further configured as follows. The frame cover further projects from the attachment portion to the cushion side frame in an eave-like manner outward in the seat width direction, and forms an eave-like expansion area in which the seat side shield projects inwardly from the outside in the seat width direction in an eave-like manner. It has an overhang that goes under the .

According to the above configuration, even if the seat side shield expands under the deployment pressure of the seat side airbag, the overhanging portion of the frame cover more appropriately prevents the seat side airbag from coming into contact with the cushion side frame. can be done.

Moreover, the frame cover of the present invention may be further configured as follows. The frame cover further includes a fitting portion fitted in a direction intersecting the width direction of the seat between a recliner that functions as a mechanism for adjusting the backrest angle of the seat back and a reclining plate of the cushion side frame connected to the recliner. have.

According to the above configuration, when the frame cover receives the deployment pressure of the seat side airbag, stress concentration can be generated in the fitting portion that supports the frame cover in a cantilever manner, and energy accompanying deformation can be absorbed. As a result, other functional parts of the frame cover are less likely to be damaged.

Moreover, the frame cover of the present invention may be further configured as follows. The frame cover further includes, as a structure for attaching to the cushion side frames, a through portion through which a corner projecting angularly from the periphery of the cushion side frame passes from the tip thereof, and a periphery of the cushion side frame that extends in the seat width direction. and an engaging portion that is snap-fitted into a recess formed in the side surface of the cushion side frame.

According to the above configuration, the frame cover can be assembled to the cushion side frame in an appropriately positioned state by a rational configuration utilizing the shape of the cushion side frame.

1 is a perspective view showing a schematic configuration of a frame cover according to a first embodiment; FIG. FIG. 4 is a side view showing a deployed state of the seat side airbag; Fig. 3 is an exploded perspective view of the seat side shield; FIG. 4 is a perspective view of FIG. 3 viewed from the inside in the seat width direction; FIG. 4 is a perspective view showing the skeleton structure of the left side area of the seat; FIG. 6 is a side view of FIG. 5; FIG. 6 is a perspective view of FIG. 5 viewed from the inside in the seat width direction; FIG. 4 is an exploded perspective view of the outer side shield removed from the inner side shield; FIG. 9 is a side view of FIG. 8; FIG. 9 is a perspective view of FIG. 8 viewed from the inside in the seat width direction; FIG. 7 is a cross-sectional view taken along line XI-XI of FIG. 6; 7 is a cross-sectional view along line XII-XII of FIG. 6; FIG. FIG. 12 is a cross-sectional view corresponding to FIG. 11 showing a state in which the outer side shield is expanded from the inner side shield by the deployment pressure of the seat side airbag; FIG. 13 is a sectional view similarly corresponding to FIG. 12; FIG. 4 is an enlarged perspective view of a single outer side shield; FIG. 4 is an enlarged perspective view of a single inner side shield; 4 is an enlarged perspective view of a single frame cover; FIG.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

<<1st Embodiment>>
(Regarding the schematic configuration of the frame cover 40)
First, the configuration of the frame cover 40 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 17. FIG. In the following description, when directions such as front, back, up, down, left, and right are indicated, they refer to the respective directions shown in the respective drawings.

As shown in FIG. 1, the frame cover 40 according to the present embodiment is applied to the left side of the seat 1 forming the left side seat of an automobile. The seat 1 includes a seat back 2 that serves as a backrest portion for a seated person, and a seat cushion 3 that serves as a seating portion.

The seat back 2 has lower ends on both left and right sides connected to rear ends on both left and right sides of the seat cushion 3 via electric recliners 4 . Thereby, the seat back 2 is configured to be able to adjust the backrest angle with respect to the seat cushion 3 in the seat front-rear direction as the recliners 4 cooperate with each other.

A seat side airbag SAB is built in the left side of the seatback 2 to inflate and deploy the airbag toward the front side of the seat in the event of a side collision of the vehicle. The seat side airbag SAB is housed in the seat back 2 before a side collision of the vehicle occurs.

However, when a control device (not shown) detects a side collision of the vehicle, the seat side airbag SAB penetrates the seat back 2 and inflates and deploys toward the front side of the seat as shown in FIG. . Thereby, the seat side airbag SAB protects the body of the seated person from the sides by the airbag that is inflated and deployed on the front side of the seat.

At this time, the seat side airbag SAB is configured to deploy in a long shape in the seat height direction in order to widely protect the body of the seated person from the sides. As a result, the inflated and deployed seat side airbag SAB may partially hang on the outer shield 5 and exert a deployment pressure on the pressure receiving portion PA of the outer shield 5 from above the seat.

Due to the deployment pressure, the outer shield 5 may be disengaged from the left side portion of the seat cushion 3 or broken. At that time, it is desirable that the broken surface of the outer shield 5 should not come into contact with the airbag. Further, when the outer shield 5 is expanded due to breakage or the like, it is desirable to prevent the airbag from entering the interior through the expansion area KA and touching the frame structure.

Therefore, when the outer shield 5 is ruptured by receiving the deployment pressure from the airbag as described above, the ruptured surface 32B1 (details will be described later with reference to FIG. 13) is difficult to touch the airbag at a location where it is difficult to touch. It is set as the structure formed facing the direction. A frame cover 40 made of resin is attached to the internal frame structure facing the expansion area KA of the outer shield 5 to prevent the airbag from entering and to prevent direct contact with the frame structure. ing. Here, the outer shield 5 corresponds to the "seat side shield" of the present invention.

(Regarding the configuration of Seat 1)
Specific configurations of each part of the outer shield 5 and the frame cover 40 will be described in detail below together with the basic configuration of the seat 1. FIG. First, the configuration of each part of the seat 1 will be described. As shown in FIG. 1, the seat back 2 includes a metal back frame 2F forming its skeleton, a back pad 2P made of urethane foam as a cushioning material, and a back cover 2C made of fabric covering the entire seat back 2. , consists of

The back frame 2F is configured to have a frame shape when viewed from the front. The back pad 2P is configured to be attached to the front portion of the back frame 2F and elastically support the load of the seated person. The back cover 2C constitutes the design surface of the seat back 2 and holds the back pad 2P pressed onto the back frame 2F.

Similarly, the seat cushion 3 is composed of a metal cushion frame 3F forming its skeleton, a cushion pad 3P made of urethane foam as a cushioning material, and a fabric cushion cover 3C covering the entire seat cushion 3. .

The cushion frame 3F is configured to have a frame shape in plan view. The cushion pad 3P is assembled to the upper part of the cushion frame 3F and configured to elastically support the load of the seated person. The cushion cover 3C constitutes the design surface of the seat cushion 3 and holds the cushion pad 3P pressed onto the cushion frame 3F.

Specifically, as shown in FIGS. 3 and 4, the cushion frame 3F includes a thin plate-like lower arm 11A extending longitudinally in the seat front-rear direction, and a lower arm 11A. and a thick plate-like reclining plate 11B bolted to the rear end of the . Each side frame 11 is provided between the inner side surface (right side surface) of the reclining plate 11B and the outer side surface (left side surface) on the lower end side of each side frame 2F1 of the seat back 2, respectively. 4 are connected.

Each reclining plate 11B projects upward from the rear end of each lower arm 11A. Each reclining plate 11</b>B is configured such that the substantially upper half thereof is cut into a substantially semi-disc shape that protrudes upward in conformity with the shape of the substantially upper half of the recliner 4 .

Each side frame 11 is configured such that a rear pipe 12 made of a metal round pipe material is integrally bridged between the rear ends of the lower arms 11A. Further, each side frame 11 has a structure in which a metal front panel (not shown) is integrally bridged between the front ends of the lower arms 11A.

As shown in FIG. 3, on the left side of the reclining plate 11B, a spatter cover 13 having a cylindrical shape with a ceiling is welded. The spatter cover 13 is a cover for preventing spatter from scattering to mechanical parts of the recliner 4 from a through hole formed in the center of the reclining plate 11B when the recliner 4 is welded to the reclining plate 11B. .

A circular through hole 13A is formed in the central portion of the spatter cover 13 so as to penetrate in the sheet width direction. The through hole 13A is a hole for allowing a connecting rod 4F inserted through the center of each recliner 4 to pass through inward and outward in the seat width direction.

The connecting rod 4F is connected to an output portion of a drive motor (not shown) fixed to the back frame 2F. The connecting rod 4</b>F is a part that transmits the rotational driving force transmitted from the drive motor (not shown) to each recliner 4 to rotationally drive each recliner 4 .

As shown in FIG. 1 , an outer shield 5 made of resin is attached to the left side of the seat cushion 3 . An inner shield 6 made of resin is attached to the right side of the seat cushion 3 . The outer shield 5 and the inner shield 6 are decorative members for covering the connecting portions between the seat cushion 3 and the seat back 2 via the recliners 4 so as to look good from the outside.

(Regarding the configuration of the outer shield 5)
As shown in FIGS. 3 and 4, the outer shield 5 includes an outer side shield 20 that covers the left side frame 11 from the left side (outer side in the seat width direction), and an outer side shield 20 that covers the left side frame 11 from the right side (inner side in the seat width direction). ), and an inner side shield 30 covering from the Here, the left side frame 11 corresponds to the "cushion side frame" of the present invention.

The outer side shield 20 is elongated in the seat front-rear direction and covers the entire lower arm 11A and the reclining plate 11B that form the left side frame 11 from the left side. On the other hand, the inner side shield 30 covers from the right side the region between the peripheral region of the reclining plate 11B avoiding the connecting portion of the left side frame 11 with the recliner 4 and the substantially central portion of the lower arm 11A in the seat front-rear direction. It is shaped (see FIGS. 3-10).

Specifically, as shown in FIGS. 3 to 4 and 15, the outer side shield 20 includes a general surface portion 21 that faces the seat width direction and covers the left side frame 11 with a space from the left side, and a general surface portion and a cover part 22 that protrudes like an eave to the right from the peripheral edge of the side frame 11 and covers the peripheral edge of the side frame 11 so as to surround it. On the inner peripheral surface of the area covering the reclining plate 11B of the cover portion 22 obliquely from the upper front side, the corresponding engaging portion 36 formed on the inner side shield 30 is fitted from the outside in the seat width direction to engage with the corresponding engaging portion 36 in a snap-fit manner. An engaging claw 22A is formed to protrude.

In addition, on the inner peripheral surface of the portion of the cover portion 22 that covers the peripheral edge of the reclining plate 11B, corresponding shield hooking holes 32D and shield hooking claws 33A formed in the inner side shield 30 are provided at various locations thereon. A shield hooking claw 22B and a shield hooking hole 22C are formed to be snap-fitted from the outside in the seat width direction. These shield hooks 22B and shield hook holes 22C are formed in portions protruding from the inner peripheral surface of the cover portion 22, respectively.

On the right side of the general surface portion 21 that covers the lower arm 11A of the outer side shield 20 from the outside, a locking hole (not shown) formed in the lower arm 11A is fitted from the outside in the seat width direction with a snap fit. A locking portion (not shown) is formed. The outer side shield 20 is assembled to the side frame 11 by only one snap-fit fitting by the locking portion (not shown).

As shown in FIGS. 5 and 6, the area in which the engaging claws 22A of the cover portion 22 are formed is an area that covers the reclining plate 11B obliquely from the upper front side. The area of the cover portion 22 where the engaging claws 22A are formed serves as a pressure receiving portion PA that receives the deployment pressure from the airbag when the seat side airbag SAB described above with reference to FIG. 2 is inflated and deployed.

As shown in FIG. 11, the pressure receiving portion PA is a portion projecting from above the seat so as to cover the eaves portion 32A of the inner side shield 30. As shown in FIG. The outer side shield 20 is pressed downward to the left when the airbag deployment pressure is applied to the pressure receiving portion PA from the upper side of the seat.

As a result, as shown in FIG. 13, the outer side shield 20 exerts a force in the same direction (lower left direction) on the engaging portion 36 that is attached to the inner side shield 30, thereby is broken, or disengaged from the engaging portion 36. This will be detailed later.

As shown in FIGS. 3 to 4 and 16, the inner side shield 30 includes a general surface portion 31 that faces the seat width direction and covers the left side frame 11 from the right side, and a rear portion of the lower arm 11A of the general surface portion 31. and a front upper overhanging portion 32 that overhangs leftward from the upper peripheral edge portion of the covered front region in the form of an eave and is hooked on the flange portion 11A1 formed on the upper peripheral edge portion of the lower arm 11A.

Further, the inner side shield 30 protrudes like an eave leftward from the rear peripheral edge portion of the rear region of the general surface portion 31 covering the rear portion of the reclining plate 11B and the rear portion of the lower arm 11A to cover these rear peripheral edge portions. It has a side projecting portion 33 . Further, the inner side shield 30 has a frame hook portion 34 which is snap-fitted from above the seat to a flange portion 11A1 formed on the upper peripheral edge portion of the lower arm 11A. have

Further, as shown in FIGS. 4 and 7, the inner side shield 30 has a pipe fitting portion 35 having a U-shaped receiving opening that is fitted into the rear pipe 12 from the rear upper side and snap-fitted. have. Specifically, as shown in FIGS. 3, 5, 8, 9, and 16, the front upper overhanging portion 32 is a canopy that projects leftward from the upper peripheral edge portion of the front region of the general surface portion 31. It has a hook shape having a portion 32A and a bent portion 32B that extends from the overhanging edge portion of the eaves portion 32A downward at right angles to the seat. The front upper overhanging portion 32 is attached to the upper peripheral edge portion of the lower arm 11A so as to be hooked from the upper side of the seat.

As a result of the above assembly, the eaves portion 32A of the front upper protruding portion 32 is brought into contact with the flange portion 11A1 extending leftward from the upper peripheral portion of the lower arm 11A from above the seat, and the bent portion 32B is the left end of the flange portion 11A1. It will be in a state of being hooked in a form that hangs down from. As a result of the above assembly, the frame hooking portion 34 is snap-fitted to the flange portion 11A1 of the lower arm 11A from the upper side of the seat to be retained.

As shown in FIG. 5, in the front upper projecting portion 32, a bent portion 32B is formed in a region (the front peripheral edge portion of the region covering the reclining plate 11B) below the pressure receiving portion PA of the outer side shield 20. A frame-shaped engaging portion 36 is formed to protrude leftward from the left side surface of the rear end portion. The engaging portion 36 is a portion to which the corresponding engaging claw 22A of the outer side shield 20 is snap-fitted from the outside (left side) in the seat width direction.

Specifically, the engaging portion 36 is stretched leftward in a frame shape so that the engaging hole 36A inside the frame opens obliquely upward in front of the seat toward the pressure receiving portion PA of the outer side shield 20. It is assumed to be a shape that takes out. The engaging portion 36 elastically enters into the engaging hole 36A while the engaging claw 22A of the outer side shield 20 is pushed from the outside in the seat width direction to push and deflect the engaging claw 22A. It is configured for snap-fit engagement (see FIG. 11).

As a result of the engagement, as shown in FIG. 11, the engaging portion 36 engages with the left side of the engaging claw 22A directly facing the inner peripheral surface (right side) of the left side of the frame. A state is created in which the movement of the claw 22A to be released to the left is restricted. When the airbag is inflated and deployed as described above, the engaging portion 36 receives a pulling force from the engaging claw 22A to the lower left side due to the deployment pressure of the airbag being applied to the pressure receiving portion PA of the outer side shield 20 .

As a result, the bending portion 32B of the inner side shield 30 connected to the engaging portion 36 is subjected to a bending load that is drawn in to the lower left side with the corner portion with the eaves portion 32A serving as the base end thereof serving as a fulcrum. As a result, as shown in FIG. 13, the bent portion 32B is partially subjected to concentrated bending stress and broken, and the outer side shield 20 and the engaging portion 36 are pulled away from the inner side shield 30 to the left. It spreads so that it can be spread out (spreading area KA). Alternatively, the engaging claw 22A is disengaged from the engaging portion 36, and the outer side shield 20 is spread apart from the inner side shield 30 to the left.

When the bent portion 32B is broken as in the former case, the broken surface 32B1 is formed not at the corner with the eaves portion 32A, but at a midpoint of the bent portion 32B extending downward from the eaves portion 32A. The reason for this is that the built-up portion 32C that partially increases the thickness is formed at the inner corner portion between the bent portion 32B and the eaves portion 32A.

Due to the build-up portion 32C, the bent portion 32B is configured to cause a fracture (fracture surface 32B1) at the peripheral end portion of the build-up portion 32C. As shown in FIG. 16, the padding portion 32C extends from the inner corner of the bent portion 32B with the eaves portion 32A to the surrounding area of the engaging portion 36, that is, the surrounding area of the engaging portion 36 that does not overlap the engaging portion 36. is formed over

More specifically, the padding portion 32C is formed in a region in the seat front-rear direction where the engaging portion 36 of the bent portion 32B is located (that is, the rear end portion of the bent portion 32B). from the inner corner portion of the seat to the upper side of the engaging portion 36 so as to extend slenderly over the entire area in the seat front-rear direction. In addition, in the region of the bent portion 32B on the front side of the engaging portion 36, the padding portion 32C extends over the entire area from the inner corner of the bent portion 32B with the eaves portion 32A to the edge extending downward from the seat. formed by

That is, the padding portion 32C is formed to continuously surround the engaging portion 36 formed at the rear end portion of the bent portion 32B from the seat upper side and the seat front side. For this reason, as shown in FIG. 13, the bent portion 32B forms an L-shaped fractured surface 32B1 between the engaging portion 36 and the build-up portion 32C surrounding it when broken. Break into shape.

As a result of the above breakage, the fracture surface 32B1 is formed not at the corner between the bent portion 32B and the eaves portion 32A, but at an intermediate portion of the bent portion 32B extending downward from the eaves portion 32A. Therefore, the fractured surface 32B1 is arranged in a location where it is difficult for the airbag that is inflated and deployed from the upper side of the seat to face a direction that is difficult for the airbag to directly touch. Therefore, even if the outer shield 5 is broken due to the deployment pressure of the airbag, it does not interfere with the deployment of the airbag.

(Regarding the configuration of the frame cover 40)
As shown in FIGS. 3 to 4, 6, and 17, the frame cover 40 includes a general surface portion 41 that faces the seat width direction and covers the substantially upper half region of the reclining plate 11B from the left side, and a general surface portion 41. and a covering portion 42 that protrudes like an eave to the right from the upper peripheral edge of the reclining plate 11B and covers the upper peripheral edge of the reclining plate 11B and the recliner 4 from above the seat.

Further, the frame cover 40 has a curved plate-shaped protruding portion 43 that protrudes leftward from the upper peripheral edge portion of the general surface portion 41 like an eave and slips under the cover portion 22 of the outer side shield 20 . As shown in FIG. 5, the projecting portion 43 projects from below the pressure receiving portion PA of the cover portion 22 that receives the deployment pressure of the airbag.

Further, as shown in FIGS. 3 to 4 and 17, the frame cover 40 has a fitting portion 44, a through portion 45, a holding portion 46, and an engaging portion 47 as a mounting structure for the reclining plate 11B. , have As shown in FIG. 12, the fitting portion 44 is formed between the right side surface of the upper peripheral edge portion of the reclining plate 11B and the left side surface of the outer peripheral ring 4C of the recliner 4 as the frame cover 40 is attached to the reclining plate 11B. It is considered to be a part that fits in.

Here, the recliner 4 includes a substantially disk-shaped external gear 4A and an internal gear 4B that are assembled in a state of meshing with each other, and an outer peripheral ring mounted across the outer peripheral portions thereof to prevent them from being detached in the axial direction. 4C and Further, the recliner 4 has a wedge 4D which is assembled between the external gear 4A and the internal gear 4B and retains the external gear 4A and the internal gear 4B in a meshed state by a spring biasing force.

Further, the recliner 4 has an operating portion 4E that operates the wedge 4D to change the meshing position of the external gear 4A with the internal gear 4B by the rotational driving force transmitted from the connecting rod 4F. In the recliner 4, the meshing position of the external gear 4A with respect to the internal gear 4B is changed by the operating portion 4E, so that the backrest angle of the seat back 2 with respect to the seat cushion 3 is changed due to the difference in the number of teeth between them.

Further, in the recliner 4, when the rotational driving of the external gear 4A by the operating portion 4E is stopped, the wedge 4D presses the external gear 4A against the internal gear 4B by the spring biasing force and holds the position. Thereby, the recliner 4 is held in a state where the backrest angle of the seat back 2 with respect to the seat cushion 3 is fixed.

The right side of the external gear 4A is connected to the left side of the side frame 2F1 of the seatback 2. As shown in FIG. The left side of the internal gear 4B is connected to the right side of the reclining plate 11B. The outer peripheral ring 4C is integrally connected to the outer peripheral portion of the external gear 4A, and a part of the hook projecting from the outer peripheral portion to the left in a hook-shaped cross section is attached to the left side of the outer peripheral portion of the internal gear 4B. It is assembled in a hanging shape. As a result of the above assembly, the external gear 4A and the internal gear 4B are axially retained via the outer ring 4C.

The fitting portion 44 of the frame cover 40 is set so as to be fitted between the left side surface of the outer peripheral ring 4C that engages the left side surface of the internal gear 4B of the recliner 4 and the right side surface of the reclining plate 11B. More specifically, as shown in FIGS. 4 and 12, the fitting portion 44 is located on the right side of the reclining plate 11B and on the outer periphery at each position below the apex of the convex curved surface of the reclining plate 11B. It is set so as to fit between the left side of the ring 4C. As shown in FIG. 12, the fitting portion 44 has a shape extending downwardly from the general surface portion 41 immediately below the base end of the projecting portion 43 extending from the general surface portion 41 .

As shown in FIGS. 4 and 17 , the through portion 45 is formed at the rear end portion of the general surface portion 41 of the frame cover 40 . As shown in FIGS. 3 to 6, the through portion 45 is passed from above the seat through a stopper 11B1 formed at the rear end portion of the convex curved surface of the reclining plate 11B. Then, it fits around the stopper 11B1 and is set in a state surrounding the stopper 11B1. Here, the stopper 11B1 corresponds to the "corner" of the present invention.

As shown in FIG. 17, the clamping portion 46 is formed to project from the right side surface of the front end portion of the general surface portion 41 into an L-shaped plate that is bent downward to the right. As shown in FIGS. 4 and 10, the clamping portion 46 is set on the reclining plate 11B from above the seat, and extends downward from the peak of the convexly curved surface of the reclining plate 11B. It is set in a shape that rests against the sloping surface and its right side.

Thereby, the sandwiching portion 46 is set in a state of sandwiching the upper peripheral edge portion of the reclining plate 11B with the general surface portion 41 of the frame cover 40 in the seat width direction. The holding portion 46 is thicker than the fitting portion 44 .

The engaging portion 47 is formed at the central lower end portion of the general surface portion 41, as shown in FIG. The engaging portion 47 has a claw shape projecting rightward from its lower end portion. The engaging portion 47 has slits in both the front and rear sides so that the claw-shaped lower end portion cantilevers in the sheet width direction with respect to the general surface portion 41 . .

As shown in FIG. 6, the engaging portion 47 is set in such a manner that it is fitted in the upper peripheral portion of the reclining plate 11B while passing the through portion 45 of the frame cover 40 through the stopper 11B1 of the reclining plate 11B. It elastically enters the through hole 13A of the spatter cover 13 from the left side and is snap-fitted. As a result, the engaging portion 47 is locked to the spatter cover 13 so as not to come off above the seat. Here, 13 A of through-holes correspond to the "recessed part" of this invention.

The frame cover 40 is attached to the reclining plate 11B as follows. First, the passing portion 45 of the frame cover 40 is passed through the stopper 11B1 of the reclining plate 11B from above the seat. Next, the covering portion 42 is set so as to cover the upper peripheral portion of the reclining plate 11B with the through portion 45 passed through the stopper 11B1 as a fulcrum.

As a result, the holding portion 46 described above with reference to FIG. 4 is set so as to hold the upper peripheral edge portion of the reclining plate 11B and the general surface portion 41 in the seat width direction. Further, as shown in FIG. 6, the engaging portion 47 is fitted into the through hole 13A of the sputter cover 13 in a snap-fitting manner. As a result, the frame cover 40 is attached to the reclining plate 11B so as to be integrally connected so as not to rattle in the front, rear, up, down, left, and right directions.

When the frame cover 40 is attached to the reclining plate 11B, the general surface portion 41 covers the upper half of the reclining plate 11B from the left side. Further, the frame cover 40 is in a state where the covering portion 42 covers the reclining plate 11B and the recliner 4 from above the seat.

Further, as shown in FIG. 5, the frame cover 40 is in a state where the overhanging portion 43 is overhanging under the pressure receiving portion PA of the outer side shield 20 . 12, the fitting portion 44 of the frame cover 40 is fitted between the reclining plate 11B and the outer ring 4C of the recliner 4. As shown in FIG.

As shown in FIG. 14, the frame cover 40 assembled as described above is stretched when the seat side airbag SAB is inflated and deployed so that the outer side shield 20 is pulled away from the inner side shield 30 to the left. The projecting portion 43 covers the expansion area KA from the inside to prevent the airbag from entering. At this time, when the expansion pressure of the airbag is applied to the projecting portion 43 of the frame cover 40 , a large bending load is applied to the proximal end of the projecting portion 43 extending from the general surface portion 41 .

However, in the frame cover 40, when the expansion pressure of the airbag is applied to the projecting portion 43, the fitting portion 44 hanging down from the proximal end of the projecting portion 43 reclines due to the bending load. Energy is absorbed by breaking from the base between the plate 11B and the recliner 4. - 特許庁As a result, the load applied to the overhanging portion 43 is reduced, and the state in which the overhanging portion 43 prevents the entry of the airbag can be maintained. Further, since the overhanging portion 43 is less likely to break, it is possible to prevent the airbag from coming into contact with the edge surface caused by the breakage.

(summary)
In summary, the frame cover 40 according to this embodiment has the following configuration. Note that the reference numerals in parentheses below correspond to the respective configurations shown in the above embodiments.

That is, the frame cover (40) is a resin frame cover (40) provided in the covered area of the cushion side frame (11) covered by the seat side shield (5). The frame cover (40) covers the edge of the cushion side frame (11) facing the expansion area (KA) that expands under the expansion pressure of the seat side airbag (SAB) of the seat side shield (5). It has a part (42).

According to the above configuration, the edge of the cushion side frame (11) facing the spread area (KA) of the seat side shield (5) is covered with the covering portion (42) of the frame cover (40). Thereby, even if the seat side shield (5) expands by the expansion pressure of the seat side air bag (SAB), the seat side air bag (SAB) is prevented from contacting the edge of the cushion side frame (11). can be done.

The frame cover (40) further protrudes outward in the seat width direction in the form of eaves from the attachment portion to the cushion side frame (11), and eaves the seat side shield (5) from the outside in the seat width direction to the inside. It has an overhanging portion (43) that slips under the cover portion (22) that forms a widening area (KA) that overhangs in a shape. According to the above configuration, even if the seat side shield (5) expands due to the expansion pressure of the seat side airbag (SAB), the overhanging portion (43) of the frame cover (40) prevents the seat side airbag (5) from expanding. SAB) can be more appropriately prevented from touching the cushion side frame (11).

In addition, the frame cover (40) further includes a recliner (4) that functions as a mechanism for adjusting the backrest angle of the seat back (2), and a reclining plate (11B) of the cushion side frame (11) connected to the recliner (4). ) and has a fitting portion (35) fitted in a direction crossing the seat width direction. According to the above configuration, when the frame cover (40) receives the deployment pressure of the seat side airbag (SAB), the fitting portion (35) supporting the frame cover (40) in a cantilever manner causes stress concentration. can absorb energy accompanying deformation. As a result, other functional parts of the frame cover (40) are less likely to be damaged.

In addition, the frame cover (40) is further provided with a through-hole through which a corner portion (11B1) projecting angularly from the periphery of the cushion side frame (11) passes from the tip thereof as a structure for mounting the frame cover (40) on the cushion side frame (11). (45), holding portions (46) fitted to the peripheral edge of the cushion side frame (11) so as to sandwich the peripheral edge from both sides in the seat width direction, and recesses formed in the side surfaces of the cushion side frame (11). and an engagement portion (47) snap-fitted into (13A). According to the above configuration, the frame cover (40) can be assembled to the cushion side frame (11) in an appropriately positioned state by a rational configuration utilizing the shape of the cushion side frame (11).

<<About other embodiments>>
As described above, the embodiment of the present invention has been described using one embodiment, but the present invention can be implemented in various forms shown below in addition to the above embodiment.

1. The frame cover of the present invention can be applied not only to automobile seats, but also to seats for other vehicles such as railroads, and various vehicles such as aircraft and ships. In addition to vehicle seats, frame covers can also be applied to spectator seats installed in various facilities such as sports facilities, theaters, concert venues, and event venues, as well as non-vehicle seats such as massage seats. is possible. The frame cover may cover either the left or right side frame of the seat cushion.

2. The seat side airbag may be deployed from either the left or right side of the seat back.

3. The part through which the passing part of the frame cover is passed may be a part other than the stopper of the cushion side frame. Further, the concave portion to which the engaging portion of the frame cover is snap-fitted may be formed by a through hole of the spatter cover, a hole such as a lightening hole formed in the cushion side frame, or a recess.

4. The attachment structure of the frame cover to the cushion side frame may be a fastening structure using fastening members such as screws.

1 Seat 2 Seat Back 2P Back Pad 2C Back Cover 2F Back Frame 2F1 Side Frame 3 Seat Cushion 3P Cushion Pad 3C Cushion Cover 3F Cushion Frame 4 Recliner 4A External Gear 4B Internal Gear 4C Peripheral Ring 4D Wedge 4E Operating Part 4F Connecting Rod 5 Outer Shield (seat side shield)
6 inner shield 11 side frame (cushion side frame)
11A lower arm 11A1 flange 11B reclining plate 11B1 stopper (corner)
12 rear pipe 13 spatter cover 13A through hole (recess)
20 outer side shield 21 general surface portion 22 cover portion 22A engaging claw 22B shield hooking claw 22C shield hooking hole 30 inner side shield 31 general surface portion 32 front upper overhanging portion 32A eaves portion 32B bending portion 32B1 fracture surface 32C build-up portion 32D Shield hooking hole 33 Rear overhanging portion 33A Shield hooking claw 34 Frame hooking portion 35 Pipe fitting portion 36 Engaging portion 36A Engaging hole 40 Frame cover 41 General surface portion 42 Coating portion 43 Overhanging portion 44 Fitting portion 45 Passing portion 46 Clamping portion 47 Engagement portion PA Pressure receiving portion SAB Seat side airbag KA Diffusion area

Claims (4)

A frame cover made of resin provided in a covered area of a cushion side frame covered by a seat side shield,
A frame cover having a covering portion covering an edge of the cushion side frame facing an expansion region where the frame cover expands under the expansion pressure of the seat side airbag of the seat side shield. A frame cover according to claim 1, comprising:
The frame cover further protrudes outward in the seat width direction like an eave from the attachment portion to the cushion side frame, and protrudes like an eave from the outside in the seat width direction of the seat side shield to the inside. A frame cover having a protruding portion that slips under the cover portion that forms a frame cover. A frame cover according to claim 1 or claim 2,
The frame cover is fitted in a direction crossing the width direction of the seat between the recliner, which functions as a mechanism for adjusting the backrest angle of the seat back, and the reclining plate of the cushion side frame connected to the recliner. A frame cover having a portion. The frame cover according to any one of claims 1 to 3,
The frame cover further includes, as an attachment structure to the cushion side frame, a through portion that passes through a corner projecting angularly from the peripheral edge of the cushion side frame, and a peripheral edge that is attached to the peripheral edge of the cushion side frame. and an engaging portion that is snap-fitted into a recess formed in the side surface of the cushion side frame.

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